Used Glass Cutting Machine for sale (68,182)

Year of construction: 2016, condition: ready for operation (used), - USED - CO2 TUBE LASER CUTTING MACHINE WITH LOADING/UNLOADING SYSTEM MAX CUTTING THICKNESS: 16 mm mm Kljdpfx Ahsytkdlevep MIN CIRCULAR SECTION: 80 mm MAX CIRCULAR SECTION: 610 mm MAX SQUARE SECTION: 400x400 mm MAX RECTANGULAR SECTION: 500x300 mm SOURCE: ROFIN DC045 ; 4500 W CONTROL UNIT: SIEMENS 840D WEIGHT: 100000 Kg ACCESSORIES: FUME EXHAUSTER NOTE: LENGTH OF LOADING BAR MIN.4.000-MAX 18.000 mm; LENGTH OF UNLOADING BAR MIN. 3.000 - MAX 12.500 mm; SHORT PIECE UNLOADING LENGTH UP TO 3.200 mm; 3D HEAD; CAPACITIVE SENSOR; AUTOMATIC SETTINGS; BOOSTER; FOCUS AUTOMATIC ADJUSTMENT

Condition: used, Year of construction: 2011, BOTTERO 101 BLC-J – Year 2011 Jumbo Loading table Kodpfjytgv Rsx Ahvelp Tilting

Year of construction: 2008, condition: ready for operation (used), A Bystronic CNC laser cutting system is available. Travel X/Y/Z: 4020mm/2020mm/170mm, max. sheet weight: 1500kg, positioning speed: 60m/min, simultaneous speed: 80m/min, positioning accuracy: +/-0.1mm, repeat accuracy: +/-0.05mm, laser: CO2, laser source: ByLaser 4400, laser power: 4400W, overall system dimensions X/Y/Z: approx. 8000mm/15000mm/2.5mm, cutting time: 17469h, power on: 35200h. Including two spare cutting heads 7.5in and 5in as well as various spare parts. Documentation available. An on-site inspection is possible. Expected to be available from June 2026. Klodpfsyu T D Rex Ahvjp

Condition: good (used), functionality: fully functional, Year of construction: 2003, laser type: CO₂ laser, laser power: 2,700 W, X working area max.: 6500 mm Kledjytfyzspfx Ahvep Laser power: 2700 watts Control: SINUMERIK 840D Standard equipment TRUMPF loading unit: - Tube feeder for round, square, and rectangular tubes via buffer section with X-stop for tube lengths min. 3 m and max. 6 m - Semi-finished product length measurement - Transfer unit to the machine - Tube magazine with tube separation, alignment, and transfer to tube feeder, max. bundle weight 4000 kg - Good parts removal up to max. 3,000 mm with chip conveyor - Additional tube supports - Tube handling unit: Rotating and feed station: Rotating clamping unit with pneumatically actuated clamping jaws for tube lengths up to 6000 mm and tube diameters of d = 20 - 150 mm, 2 clamping ranges: d = 20 - 85 mm and d = 85 - 150 mm - Carriage unit with linear guidance - Feed station with motor drive, including connection for extraction - Tube support: Between tube support and traverse chuck, five automatically retractable support elements with form shells are provided - Traverse chuck: With a passage of d = 150 mm - The tubes are positioned via the clamping jaws centrally in the Y and Z axes relative to the rotational axis for the cutting process - 2 sets of clamping jaws for round, square, and rectangular tubes (simple design), clamping range 20 - 85 mm, 85 - 150 mm - Good part removal (unloading cabin for round and rectangular tubes) - Sorting options: 2 finished parts (front and rear), 1 flat - Scrap conveyor; programmable sorting; max. scrap length 300 mm (collection container, scrap belt) - Finished part length up to 3000 mm can be automatically unloaded (front and rear) Safety equipment: - Compact extraction unit Filter system designed for the separation of airborne particles produced during laser cutting of metals - Light barrier: Loading area secured by light barriers - Protective cabin: In the area of the cutting head, a Macrolon sheet metal combination is installed for laser radiation protection - Chip conveyor: Conveyor belt for discharging cut remnants - Operating manual

Condition: good (used), functionality: fully functional, Year of construction: 2017, operating hours: 16,566 h, control type: CNC control, degree of automation: automatic, laser type: fiber laser, laser power: 4,000 W, CNC Laser Cutting System TruLaser Cell 7040 FKL (L31) 4000 Watt Max. working area (X x Y x Z) in mm: 4000 x 1500 x 750 Control: Siemens 840D PowerLine Laser power: 4000 Watt Operating hours: 16,566 h Laser beam on: 14,202 h Laser Machine TruLaser Cell 7040, Y1500 (L31) - X = 4000 mm, Y = 1500 mm, Z = 750 mm, B = 750 mm, B = +/- 135°, C = n * 360° - 30m fiber optic cable - Automatic optical recognition - Magnetic coupling - FocusLine - Teach panel with teach software - Network connectivity Machine data acquisition TruDisk 4001 - Power = 4000 W Kjdpfjytfgbsx Ahvslp - Beam quality = 4 mm·mrad - incl. laser power control Number of optical outputs Number of core switches Water-air cooler - For TruDisk 4001 Workpiece processing WeldLine Comfort - CutLine Professional - Prepared for laser cutting and laser welding - 2in1 fiber incl. core switch - Technology tables for cutting - ControlLine Motorized welding optics MDE nozzle f = 200 - Adjustable focus position: +30 mm / -70 mm TruTops Cell Basic Configurable control interface, control cabinet Safety equipment Extraction piping device Mobile room extraction unit Compact deduster with 4000 Nm³/h - Incl. spark pre-separator and self-cleaning filter mats CO₂ extinguishing system for 4000 Nm³/h Standard protective enclosure Automatic front sliding door - Incl. 2 control panels Status indicator light Movable hanging control pendant + TeachLine (special feature) - Optical sensor system with light section and incident light measurement allows complete 3D scanning of a measuring point - Coaxial camera integration - Incl. holder and wiring - Adaptation of TeachLine sensor system to MSO welding optics + Pneumatic clamping of rotary axis and counter bearing + Extension of machine body - Surcharge for special machine body and extension 240 mm to the left + Large rotary axis & counter bearing on machine body - Rotary axis and counter bearing supported by floor rail - Max. load capacity 2,000 kg - Max. torque 5,600 Nm - Counter bearing without lift (not even pneumatic) - Rotary feedthrough on counter bearing 8x pneumatic/12x electric - Interface on rotary axis and counter bearing each with support bar with 2x M12 threads and D16 round bolts - Manual clamping + Media feed on machine body + Valve terminal on machine body + Measuring head probe - Incl. holder with yoke plate and wiring - Incl. calibration sphere - Interface for probe

Condition: excellent (used), functionality: fully functional, Year of construction: 2007, operating hours: 24,184 h, machine/vehicle number: A0230A1546, laser type: CO₂ laser, laser source manufacturer: TRUMPF, laser hours: 24,184 h, laser power: 5,000 W, sheet thickness (max.): 20 mm, sheet thickness steel (max.): 20 mm, sheet thickness stainless steel (max.): 15 mm, sheet thickness aluminum (max.): 12 mm, table length: 3,000 mm, table width: 1,500 mm, Equipment: CE marking, cooling unit, documentation/manual, The machine has been serviced by TRUMPF under a maintenance contract. The machine can be inspected in operation in Budapest, and prompt collection is possible. Kljdpjyu S Ihefx Ahvsp

Condition: used, functionality: fully functional, With this offer, you are purchasing a used Canon Booklet Trimmer F1. Item for sale: 1 x Canon Booklet Trimmer F1: Suitable for various Canon models. We also have other finishing options and printing machines in stock. Please feel free to contact us! Condition: This offer is for a used device, which may show signs of wear Kodoytciaopfx Ahvolp (minor scratches or yellowing). The device has been tested for functionality. Packaging and shipping: You are welcome to view the device during our business hours. Please make an appointment! Seaworthy packaging and worldwide shipping available on request! For more information, please feel free to contact us personally.

Condition: excellent (used), functionality: fully functional, Year of construction: 2017, operating hours: 4,500 h, machine/vehicle number: 1703226006, control type: CNC control, degree of automation: manual, actuation type: pneumatic, laser type: fiber laser, laser power: 500 W, table length: 800 mm, table width: 1,100 mm, working length: 600 mm, working width: 1,000 mm, Equipment: dust extraction, emergency stop, fume extraction, DEN / Bystronic FCCB 1012 – 500 W Fiber Laser Machine For sale is a DEN / Bystronic FCCB 1012 fiber laser machine with 500 W power. The machine is ideal for precise cutting and processing tasks in metalworking. Scope of delivery includes: Laser machine DEN / Bystronic FCCB 1012 (500 W Fiber) suitable extraction system Kjdpfx Aoyg E Iljhvslp all associated parts and components Original purchase price was 110,000 euros

Condition: excellent (used), Year of construction: 2015, operating hours: 5,090 h, functionality: fully functional, machine/vehicle number: T0298, workpiece weight (max.): 850 kg, travel distance X-axis: 500 mm, travel distance Y-axis: 350 mm, travel distance Z-axis: 250 mm, workpiece height (max.): 245 mm, workpiece length (max.): 670 mm, type of input current: three-phase, table width: 960 mm, input frequency: 50 Hz, Equipment: cooling unit, The Sodick VZ500L is a wire-cut EDM (Electrical Discharge Machining) machine from Sodick, designed for electro-erosive machining of metals. This is a wire-type machine equipped with linear drives, enabling precise cutting of intricate shapes at an angle based on CAD files (e.g., DXF, STEP, IGES). Main features: Type: Wire-cut EDM Manufacturer: Sodick Model: VZ500L Klodpfxex Ekcyj Ahvop Drives: Linear Working range (X x Y x Z): 500mm 350mm 250mm Maximum workpiece dimensions: 960mm 670mm 245mm Maximum workpiece weight: 850 kg Capabilities: Angular wire cutting (based on 3D models) Additional features: Automatic wire feeding (AWF) Immersion in dielectric fluid

Condition: used, Year of construction: 1993, POLAR 115 EM-MON AUTOTRIM Kljdpjytb A Ssfx Ahvop • Airtable • Side tables (air) • Light barrier • Programmable • Jogger – RAB2 • Lift – L600-3 • Three extra spare knives • In production • Available: 05/2026

Year of construction: 2012, condition: excellent (used), functionality: fully functional, horizontal glass wasching machine Kledpfxeyu N Uro Ahvop working width : 1300 mm glass thikness : 3 - 35 mm including motorized working height adjustment till 500 mm for maintenance min. glass size : 250 x 150 mm number of brushes : 4 number of air knives : 4 speed : 2 - 7 m /min machine sizes : L x H x H ca. 4742 x 2570 x 1320 mm

Condition: excellent (used), Year of construction: 2013, Carton blank die-cutting machine, low operating hours. The machine is still connected and can be demonstrated. Immediately available. Ksdpoxluukjfx Ahvslp

Condition: used, Year of construction: 2020, functionality: fully functional, type of input current: three-phase, working range: 9,000 mm, sheet thickness (max.): 100 mm, overall weight: 1,100 kg, input voltage: 400 V, total width: 3,500 mm, cutting current: 154 A, input frequency: 50 Hz, We are offering this used MicroStep 9001.35P plasma cutting machine, year 2020. Type: MasterCut Kledpfx Ahjyu Hkwsvop Model: 9001.35P Serial No.: 2815 Year of Manufacture: 2020 Rated Current: 154 A Short-Circuit Current: 6 kA Weight: 1,100 kg IP Protection: 43/20 Power Supply: 3L+N+PE AC 400/230V, 50Hz If you have any further questions or require more information, please send us a message or give us a call.

Condition: used, Year of construction: 2020, controller manufacturer: Siemens, controller model: sinumerik 840d, _____ Description: Year of manuf. : 2020 Accuracy : 0,015 mm Technical specifications Axis travel range:X 800 mm, Y 600 mm, Z 400 mm Workpiece machining:CutLine Professional 2D Machining:2D Klsdoyr Uiiopfx Ahvjp Cutting head camera:available Dimensions:3300 x 1600 x 2200 Axis speed:50 m/min Max. axis acceleration:10m/s² Positioning accuracy:0.015mm Equipment :-Variable clamping system :-Teach panel :-TruDisk 3000 :-Cutting optics adjustment device :-Automation interface

Condition: new, x-travel: 3000y-travel: 2000z-travel: 250performance of pump (flushing): 37 Control: Siemens PLC Touch Screen directly usable DXF files Outlet pressure: max. 5500 bar Abrasive conveyor system for water jet cutting systems - filling weight 350 kg OMAX vacuum sensor for monitoring the abrasive supply to the nozzle Pump pressure control sensor With water jet cutting, water is compressed at a pressure of up to 5500 bar. Depending on the requirements and the workpiece, this is then pressed through a nozzle with a diameter of 0.01 to 0.08 mm. Since water jet technology processes materials without heat input, there are no deformations. By adding an abrasive, water jet cutting enables maximum precision with tolerances of +/- 0.01 mm. Our flexible production allows vertical as well as diagonal cuts. We would be happy to receive your individual CAD data. The water jet technology offers great advantages for industry, trade and individual prototype production. Water cutting technology is also a plus point for the environment, as it works dust- and steam-free and also saves material. Waterjet Cutting: Example Gallery Klodpfx Aohqnl Tehvjp What sounds impressive in theory is even more impressive on the finished object. We have put together a selection of images to demonstrate our waterjet cutting capabilities. Click through the photos in the example gallery and get an impression of what is possible with this modern processing method. Waterjet will also find the right solution for your order! advantages No deformations in the cutting area Cutting without heat input Material saving High precision: +/- 0.1mm Cutting area: x = 3010 mm; y = 2010mm; Z=250mm Flexible manufacturing Vertical and oblique cuts Adoption of your CAD data formats: DXF, DWG, iges, stp, step, prt, jpt, jam Environmentally friendly, vapor and dust free We cut everything All materials brought into shape aluminum stole Brass Copper & Bronze Other precious metals Glass Granite & Marble tiles composites Promat cuts rubber plastics plexiglass Options: Oil cooler                                                         ¤ 10,725.00 Water filter system                                           ¤ 1,430.00 Sludge suction system                                     ¤ 10,725.00 Professional water treatment system               ¤ 10,725.00 An oil cooler must be present when commissioning!!! So you can work longer than 1 hour.

Condition: new, x-travel: 4000y-travel: 2000z-travel: 250performance of pump (flushing): 37 Control: Siemens PLC Touch Screen directly usable DXF files Outlet pressure: max. 5500 bar Abrasive conveyor system for water jet cutting systems - filling weight 350 kg OMAX vacuum sensor for monitoring the abrasive supply to the nozzle Pump pressure control sensor With water jet cutting, water is compressed at a pressure of up to 5500 bar. Depending on the requirements and the workpiece, this is then pressed through a nozzle with a diameter of 0.01 to 0.08 mm. Since water jet technology processes materials without heat input, there are no deformations. By adding an abrasive, water jet cutting enables maximum precision with tolerances of +/- 0.01 mm. Our flexible production allows vertical as well as diagonal cuts. We would be happy to receive your individual CAD data. The water jet technology offers great advantages for industry, trade and individual prototype production. Water cutting technology is also a plus point for the environment, as it works dust- and steam-free and also saves material. Waterjet Cutting: Example Gallery What sounds impressive in theory is even more impressive on the finished object. We have put together a selection of images to demonstrate our waterjet cutting capabilities. Click through the photos in the example gallery and get an impression of what is possible with this modern processing method. Waterjet will also find the right solution for your order! benefits No deformations in the cutting area Cutting without heat input Material saving High precision: +/- 0.1mm Cutting area: x = 3010 mm; y = 2010mm; Z=250mm Flexible manufacturing Vertical and oblique cuts Adoption of your CAD data formats: DXF, DWG, iges, stp, step, prt, jpt, jam Environmentally friendly, vapor and dust free We cut everything All materials brought into shape aluminum steel Brass Copper & Bronze Other precious metals Glass Granite & Marble tiles composites Promat cuts rubber plastics plexiglass Options: Oil cooler                                                         ¤ 10,725.00 Water filter system                                           ¤   1,430.00 Sludge suction system                                     ¤ 10,725.00 Professional water treatment system               ¤ 10,725.00 Kledpfx Aed Ab Uuohvep An oil cooler must be present when commissioning!!! So you can work longer than 1 hour.

Condition: ready for operation (used), Year of construction: 2008, functionality: fully functional, Vertical washer right to left size 2500 mm with 6 bryshes low e . Tickness 3-25mm Kedeyu D H Aepfx Ahvolp

Condition: used, Year of construction: 2010, Trumpf TruLaser 1030 – Laser Cutting Machine - B&R Automation PC 820 CNC Control - TruCoax 2500 Laser - Serviced annually by Trumpf (last service July 2025) - Year of manufacture: 2010 Technical Specifications: Working Area: - X-axis: 3078 mm - Y-axis: 1550 mm - Z-axis: 76 mm Maximum Material Thickness: - Mild steel: 16 mm - Stainless steel: 8 mm - Aluminium: 6 mm Speed: - Max. cutting speed: 40 m/min - Cutting acceleration: 2 m/s² - Positioning acceleration: 9 m/s² Accuracy: - Smallest programmable increment: 0.001 mm - Position deviation: ± 0.1 mm/m Kedpoyghm Dofx Ahvolp - Average positioning scatter: ± 0.03 mm Laser: - Max. laser power: 2500 W - Wavelength: 10.6 µm - Power stability: ± 2 % - Power distribution: TEM00 Compressed Air Consumption: - Standard cutting: 333 l/min - Air cutting: 500 l/min Electrical Data: - Drive type: maintenance-free three-phase motors - Connection: 65 kVA - Protection at 400 V: 100 A Dimensions & Weight: - Dimensions (W x H x D): 7396 x 2291 x 3287 mm - Total weight: 8850 kg

Condition: excellent (used), functionality: fully functional, Year of construction: 2018, Max. sheet size: 3000 x 1500 mm Fiber laser 3 kW Max. material thickness: Carbon steel: 20 mm, Stainless steel: 12 mm, Aluminum: 12 mm, Copper: 6 mm Accuracy: Repeatability ±0.05 mm Sheet change time: 27 sec. Cutting hours: 15400 h Length: 10495 mm Kedpfxjyr N Uao Ahvslp Width: 6903 mm Height: 2880 mm Weight: 13000 kg

Condition: refurbished (used), Year of construction: 1990, functionality: fully functional, total length: 1,100 mm, total width: 1,100 mm, total height: 900 mm, working height: 900 mm, input voltage: 220 V, overall weight: 250 kg, power: 0.5 kW (0.68 HP), Equipment: documentation/manual, Lisec turntable, for the production of insulating glass, new base frame! Fully functional, packed on pallet. Klodpfeyuy D Dox Ahvjp

Condition: excellent (used), functionality: fully functional, Year of construction: 2014, control type: CNC control, degree of automation: automatic, actuation type: electric, laser type: fiber laser, laser power: 2,000 W, sheet thickness (max.): 12 mm, sheet thickness stainless steel (max.): 6 mm, sheet thickness aluminum (max.): 6 mm, sheet thickness copper (max.): 6 mm, table length: 3,000 mm, table width: 1,500 mm, type of cooling: water, total length: 9,000 mm, Equipment: CE marking, centralized greasing system, cooling unit, documentation/manual, dust extraction, emergency stop, fume extraction, safety light barrier, Ermaksan Fibermak Momentum Gen-2 Fiber Laser Cutting Machine General Information • Manufacturer: Ermaksan (Turkey) • Model: Fibermak Momentum Gen-2 (3015) • Year of manufacture: 2014 • Condition: Used – very good technical condition • Location: Spytkówki 64-000 • Sale price: PLN 110,000 + 23% VAT _____ Technical specifications Parameter Value Laser power 2,000 W (IPG / IPS Fiber Laser) Working area 3000 × 1500 mm Laser type Fiber Control system CNC Beckhoff CP6242 Max. cutting speed 100 m/min (X/Y axis) Max. cutting thickness: steel up to 12 mm Max. cutting thickness: stainless steel up to 6 mm Max. cutting thickness: aluminium up to 6 mm Positioning accuracy ±0.05 mm Worktable Automatic shuttle table (dual shuttle) Cooling system Chiller included Cutting head Precitec HPSSL Plus Auto Focus Axis drive Magnetic linear drives Software Lantek Expert Cut CAD/CAM Kledpfx Ahoyuyptevjp Machine weight approx. 11–12 tons _____ Additional equipment • Automatic nozzle calibration and cleaning • Ermaksan Dust Collector • Conveyor system for scrap removal • Complete IPG Chiller unit • Touchscreen control, Beckhoff operator panel • Full technical documentation and operation manuals _____ Description The Ermaksan Fibermak Momentum Gen-2 is a proven machine design for precise cutting of steel, stainless steel, and aluminum sheets, delivering low operating costs and high edge quality. This model ensures stable operation thanks to a high-performance fiber laser source and dynamic linear drives. An excellent solution for manufacturing companies requiring a fast, precise, and energy-efficient sheet metal cutting machine. The machine is in continuous operation, regularly serviced, and fully functional. _____ Purchase benefits • Directly from the user – possibility of machine demonstration • Ready for tests under power • Organization of transport and installation available • Assistance with commissioning and operator training

Condition: good (used), Year of construction: 1969, machine/vehicle number: 317594, cutting width (max.): 1,380 mm, Cardboard rotary board cutting machine, in working condition, new knives,... Kjdpfxsv A Rzlj Ahvolp

Condition: excellent (used), Year of construction: 2025, functionality: fully functional, machine/vehicle number: EN 60204-1, sheet thickness (max.): 20 mm, sheet thickness steel (max.): 20 mm, sheet thickness aluminum (max.): 10 mm, cutting height (max.): 20 mm, table length: 3,000 mm, working width: 1,500 mm, table width: 1,500 mm, warranty duration: 12 months, working length: 3,000 mm, travel distance X-axis: 3,000 mm, travel distance Y-axis: 1,500 mm, height adjustment type: electric, We are offering this well-maintained Hugong INTECUT-HT plasma cutting machine / CNC portal cutting system KAI-TEC Smart, including marking function, year of manufacture 2025, as we are upgrading to a larger system. The machine was only purchased for a single project and has been in operation since August 2025. The manufacturer’s warranty is valid until August 2026. The system is fully functional, in excellent technical condition, and shows no signs of excessive wear. Only normal signs of use are present. It has become too small for our requirements, but it is ideally suited for smaller metal workshops, metal construction companies, or fabrication shops. Technical data & features: - CNC portal cutting system KAI-TEC Smart - Cutting area: approx. 1,500 × 3,000 mm - CNC control with cutting database - NEOCUT 105 plasma system with marking function - Plasma cutting range: 1–20 mm mild steel (stainless steel & aluminium max. 10 mm) - Machine torch including hose package - Automatic torch height control - Laser pointer - FastCam7 nesting software - DXF / DWG import - Auto-nesting function - Remnant sheet nesting - Cut cost calculation Accessories: ✅ Spare and consumable parts included (e.g. nozzles, electrodes and other accessories – ready for immediate use) Other: - Sale due to new installation - Viewing and test run possible by arrangement - Collection by buyer Kjdpeyux Hqefx Ahvolp - Price plus VAT Legal notice: The sale is made with exclusion of liability for material defects. No warranty, no guarantee, no returns. If you have any questions or need further information, feel free to send us a message or give us a call.

Condition: excellent (used), Year of construction: 2008, functionality: fully functional, Polar Mohr 66 Kledpfx Aoyuw T Aohvop Year of manufacture: 2008 Programmable, 2 blades, complete documentation, tools; Both visually and technically in excellent condition;

Condition: new, functionality: fully functional, Year of construction: 2024, laser power: 6,000 W, sheet thickness steel (max.): 30 mm, sheet thickness aluminum (max.): 20 mm, travel distance X-axis: 3,000 mm, travel distance Y-axis: 1,500 mm, positioning accuracy: 0.03 mm, workpiece weight (max.): 1,000 kg, overall weight: 5,000 kg, Including 7.5 kW extraction system Compact, space-saving, and affordable fiber laser Manually extendable work table - electrically assisted Work table safety door opens and closes electrically Sturdy welded construction for high rigidity, precision, and durability Machine bed shielded by manganese steel plates to protect against heat, sparks, and slag Effective cutting fume extraction; controlled flaps focus the extraction power on the current work area Raycus laser source with autofocus laser head from HSG (optional laser source from IPG) Laser head with faster focusing speed than comparable units, resulting in higher penetration speeds with thicker materials Main lens protected by an easily replaceable double protective lens Efficient water cooling of the laser head Power stabilizer to compensate for voltage fluctuations, thus ensuring consistent cutting quality Very easy handling of the machine and the user-friendly software Control software with numerous templates for programming simple components Material storage management User-friendly nesting software with many features Camera-monitored laser work area with transmission to screen Kjdjwf H Avspfx Ahvolp