A raw material cutting device for a crusher piston core

Abstract

The application relates to the technical field of crusher piston cores, in particular to a raw material cutting device for a crusher piston core, which comprises a support, a protection frame, a cutting assembly and a clamping assembly. A plurality of groups of first clamping blocks are matched with wedge-shaped self-adaptive clamping structures, long rod materials are clamped in multiple sections in a synchronous mode, the clamping force is uniformly distributed, the clamping contact area is large, axial movement and radial deflection caused by cutting shearing force can be fully offset, the cutting end face is flat and free of tearing, the size precision of the blank meets the standard, the bidirectional screw rod is matched with a worm gear transmission to flexibly adjust the clamping spacing, the wedge-shaped blocks are self-adaptively matched with rod materials with different diameters, the adjustable supporting structure is adapted to rod materials with different lengths, the device can be compatible with raw materials of multiple specifications without replacing the clamp, an arc-shaped plate and an adjustable round plate form a cutting end auxiliary supporting structure, and sudden breakage of the rod material due to gravity in the cutting and ending stage is avoided.

Description

Technical Field

[0001] This invention relates to the field of crusher piston core technology, specifically to a raw material cutting device for crusher piston cores. Background Technology

[0002] As is well known, the piston core of a crusher is a core wear-resistant and pressure-bearing component of crushing equipment in mining, building material crushing, metallurgical beneficiation and other fields. The dimensional accuracy, cross-sectional flatness and billet integrity of the raw material bar cutting process directly determine the subsequent machining efficiency, finished product assembly accuracy and long-term service performance of the piston core.

[0003] Chinese Patent Publication No. CN213795273U discloses a clamp for sawing round bars or tubes on a band saw. It has only a single set of left and right semi-circular arc hole clamping bodies, and achieves single-sided clamping by bolts and springs. Only one set of clamping units is arranged along the axial direction of the bar, without multiple sets of synchronous clamping structures. Under the action of cutting shearing force, the bar moves axially and deflects radially, and the end face of the billet tilts, tears, and the dimensions are out of tolerance.

[0004] Chinese Patent Publication No. CN204321687U discloses a clamp for sawing, which adopts upper and lower fixed pressure plates. The pressure plates have strip slots of fixed size, which can only clamp bars of fixed diameter. It cannot be compatible with piston core materials of multiple specifications, and the changeover time is long and the production efficiency is extremely low.

[0005] Chinese Patent Publication No. CN209125000U discloses a high-precision intelligent bar cutting machine. The distance between the clamping part and the cutting position is too large, the end of the bar is suspended in the air, there is no arc-shaped support plate or rotating circular plate structure, and the bar suddenly breaks under gravity in the final stage of cutting, with stepped chipping and tearing on the cross-section, and the piston core blank is scrapped.

[0006] Chinese Patent Publication No. CN211489386U discloses an automatic feeding device for a bar shearing machine. It adopts an intermittent conveyor wheel for feeding, without a clamping push ring or a hydraulically driven progressive feeding structure. The feeding is achieved through roller friction transmission, which is prone to slippage. The feeding distance cannot be accurately controlled, manual feeding is labor-intensive, feeding errors accumulate, and batch cutting dimensions are inconsistent.

[0007] Therefore, a raw material cutting device for crusher piston cores is needed. Summary of the Invention

[0008] In order to overcome the problems of existing raw material cutting devices for crusher piston cores being unable to achieve multi-segment progressive synchronous clamping of long bars, having extremely poor adaptability of existing clamping structures, and lacking auxiliary support structures at the cutting end of the bars, this invention provides a raw material cutting device for crusher piston cores.

[0009] To achieve the above objectives, the present invention provides the following technical solution: a raw material cutting device for crusher piston cores, comprising: support; A protective frame, which is fixedly installed around the bracket; A cutting assembly, the cutting assembly being mounted on top of the bracket; and A clamping assembly is mounted on the top of the bracket. The clamping assembly includes a first support plate, which is fixedly disposed on one side of the top of the bracket. A first mounting plate is fixedly disposed on the first support plate. At least three sets of first sliding grooves are formed on the first mounting plate. First sliders are slidably disposed in opposite directions within the first sliding grooves. First clamping blocks are fixedly disposed on the top of the first sliders. The first clamping blocks are arranged opposite to each other. An installation groove is formed at the center of each first clamping block. Second sliding grooves are formed on both sides of each first clamping block. The second sliding grooves communicate with the installation grooves. Wedge blocks are slidably disposed on both sides of each installation groove. The wedge blocks are slidably disposed with the second sliding grooves.

[0010] Preferably, a first connecting block is fixedly provided on the side of the wedge block, a first rotating rod is rotatably provided on the first connecting block, a second rotating rod is rotatably provided between the first rotating rods, a first sliding groove is provided on both sides of the first clamping block, a sliding column is slidably provided in the first sliding groove, and the sliding column is rotatably provided at the center of the second rotating rod.

[0011] Furthermore, a connecting plate is fixedly disposed between the bottoms of the first slider, a first support seat is fixedly disposed on the top of the connecting plate, and second support seats are fixedly disposed on both sides of the first mounting plate. A bidirectional lead screw is rotatably disposed between the second support seats. The bidirectional lead screw is threadedly connected to the first support seat. A worm gear is fixedly disposed at one end of the bidirectional lead screw. A protective cover is fixedly disposed on the side of the first mounting plate. A worm adapted to the worm gear is rotatably disposed on the protective cover. A first bevel gear is fixedly disposed on the side of the worm gear. A first handle is rotatably disposed on the protective cover. A second bevel gear is fixedly disposed on the side of the first handle. The second bevel gear meshes with the first bevel gear.

[0012] Furthermore, a support block is fixedly installed at the top center of the first mounting plate, a bearing frame is fixedly installed on the top of the support block, and a rotating roller is rotatably installed between the bearing frames.

[0013] In a further embodiment, a fixing plate is fixedly mounted on the side of the first mounting plate, a reinforcing rib is fixedly mounted on the bottom of the fixing plate, and the other end of the reinforcing rib is fixedly mounted to the first mounting plate. A third sliding groove is formed on the top of the fixing plate, and a pushing block is slidably mounted in the third sliding groove. A first hydraulic rod is fixedly mounted on the bottom of the first mounting plate, and the output shaft of the first hydraulic rod is connected to the side of the pushing block through a flange. A pushing ring is fixedly mounted on the top of the pushing block, and transverse grooves are formed on both sides of the pushing ring. A first clamping plate is slidably mounted in the transverse groove, and a transverse plate is fixedly mounted on the side of the first clamping plate. The transverse plate is slidably mounted against the inner wall of the transverse groove.

[0014] Based on the aforementioned scheme, an inclined groove is provided between the pushing block and the pushing ring. A second connecting block is fixedly provided on the side of the pushing block. A first rotating rod is rotatably provided inside the second connecting block. The first rotating rod is slidably provided with the inclined groove. A third connecting block is fixedly provided at the other end of the first rotating rod. A connecting plate is fixedly provided between the bottoms of the third connecting blocks. A second hydraulic rod is fixedly provided at the bottom of the pushing block. The top of the second hydraulic rod is fixedly provided with the connecting plate.

[0015] Further, based on the aforementioned solution, a second support plate is fixedly installed on the other side of the top of the bracket, a second mounting plate is fixedly installed on the second support plate, a base is fixedly installed on the second mounting plate, an arc-shaped plate is fixedly installed on the base, the arc-shaped plate is adapted to the position of the support frame, a second sliding groove is opened on both sides of the arc-shaped plate, a vertical rod is slidably installed in the second sliding groove, a support plate is fixedly installed between the tops of the vertical rods, a slot is opened on the side of the support plate, a pull rod is slidably installed in the slot, a threaded handle is threadedly connected to the side of the pull rod, a second clamping plate is fixedly installed at the bottom of the threaded handle, a limit plate is fixedly installed on the other side of the support plate, a limit handle is threadedly connected to the limit plate, and the limit handle is adapted to the top of the pull rod.

[0016] Furthermore, based on the aforementioned scheme, a rotating shaft is rotatably provided between the vertical rods, and a circular plate is rotatably provided on the rotating shaft. The circular plate is adapted to the arc plate. One end of the rotating shaft passes through the vertical rod. A mounting bracket is fixedly provided at the bottom of the support plate. A third hydraulic rod is fixedly provided on the side of the mounting bracket. A third clamping plate is connected to the side of the third hydraulic rod through a flange. The third clamping plate is adapted to the rotating shaft.

[0017] Furthermore, based on the aforementioned solution, a collection frame is slidably provided at the bottom of the second support plate, and a second handle is fixedly provided on the side of the collection frame, the position of which is adapted to the arc-shaped plate.

[0018] Furthermore, based on the aforementioned solution, the cutting assembly includes a sliding frame slidably mounted on a bracket, located between a support block and a second support plate. Mounting wheels are rotatably mounted on both sides of the sliding frame, and a band saw is driven between the mounting wheels. A motor is fixedly mounted on the side of the sliding frame, and the motor's output shaft is connected to one of the mounting wheels via a key. A fixing rod is fixedly mounted at the bottom center of the sliding frame, and reinforcing rods are fixedly mounted on both sides of the fixing rod. The other end of each reinforcing rod is fixedly mounted to the sliding frame. A correction frame is fixedly mounted at the bottom of the fixing rod, and straightening wheels are rotatably mounted on both sides of the correction frame, located on both sides of the band saw.

[0019] The crusher piston core uses a raw material cutting device: 1. Multiple sets of opposing and synchronous first clamping blocks, combined with a wedge-shaped adaptive clamping structure, enable multi-segment synchronous clamping of long bars. The clamping force is evenly distributed and the clamping contact area is large, which can fully offset the axial movement and radial deflection caused by the cutting and shearing force.

[0020] 2. The bidirectional lead screw paired with worm gear transmission allows for flexible adjustment of the clamping distance. The wedge block adaptively fits bars of different diameters, and the adjustable support structure is compatible with bars of different lengths. It can be used with multiple specifications of raw materials without changing the clamps, greatly improving the versatility of the device.

[0021] 3. The curved plate and the adjustable circular plate form an auxiliary support structure at the end of the cutting process, preventing the bar stock from suddenly breaking due to gravity during the final stage of cutting.

[0022] 4. The hydraulically driven push ring, in conjunction with the clamping structure, enables automatic progressive feeding of bar stock, eliminating the need for manual operation, significantly reducing labor intensity, and substantially improving cutting production efficiency.

[0023] 5. The band saw is equipped with double-sided straightening wheels, ensuring no deviation during the cutting process, high cutting accuracy, and strong overall structural rigidity. The entire process of clamping, feeding, cutting, and supporting is continuous and controllable, perfectly adapting to the production needs of high-precision cutting of crusher piston core raw materials, effectively ensuring the efficiency of subsequent machining of piston cores and the long-term service performance of finished products. Attached Figure Description

[0024] Figure 1 This is a side view of the structure of the present invention; Figure 2 This is a schematic diagram of the cutting component of the present invention; Figure 3 This is a schematic diagram of the structure of the first support plate of the present invention; Figure 4 For the present invention Figure 3 A magnified schematic diagram of the local structure at point A; Figure 5 This is a schematic diagram of the clamping assembly of the present invention; Figure 6 This is a schematic diagram of the wedge block structure of the present invention; Figure 7 This is a schematic diagram of the bidirectional lead screw of the present invention; Figure 8 This is a schematic diagram of the worm gear structure of the present invention; Figure 9 This is a schematic diagram of the structure of the driving ring of the present invention; Figure 10 This is a schematic diagram of the structure of the first clamping plate of the present invention; Figure 11 This is a schematic diagram of the structure of the second mounting plate of the present invention; Figure 12 For the present invention Figure 11 A magnified schematic diagram of the structure at point A in the middle.

[0025] In the diagram: 1. Bracket; 2. Protective frame; 3. Cutting assembly; 4. Clamping assembly; 401. First support plate; 402. First mounting plate; 403. First slide groove; 404. First slider; 405. First clamping block; 406. Mounting groove; 407. Second slide groove; 408. Wedge block; 13. First connecting block; 14. First rotating rod; 15. Second rotating rod; 16. First sliding groove; 17. Sliding column; 18. Connecting plate; 19. First support seat; 20. Second support seat; 21. Bidirectional lead screw; 22. Worm gear; 23. Protective cover; 24. Worm; 25. First bevel gear; 26. First handle; 27. Second bevel gear; 28. Support block; 29. ​​Bearing frame; 30. Rotating roller; 31. Fixed plate; 32. Reinforcing rib; 33. Third slide groove; 34. Pushing block; 35. First hydraulic rod; 3 6. Push ring; 37. Horizontal groove; 38. First clamping plate; 39. Horizontal plate; 40. Inclined groove; 41. Second connecting block; 42. First rotating rod; 43. Third connecting block; 44. Connecting plate; 45. Second hydraulic rod; 46. Second support plate; 47. Second mounting plate; 48. Base; 49. Arc plate; 50. Second sliding groove; 51. Vertical rod; 52. Support plate; 53. Slot; 54. Pull rod; 55. 56. Threaded handle; 57. Second clamping plate; 58. Limiting plate; 59. Limiting handle; 60. Rotating shaft; 61. Circular plate; 62. Mounting bracket; 63. Third hydraulic rod; 64. Third clamping plate; 65. Collection frame; 66. Second handle; 301. Sliding frame; 302. Mounting wheel; 303. Band saw; 304. Motor; 305. Fixing rod; 306. Reinforcing rod; 307. Correction frame; 308. Correction wheel. Detailed Implementation

[0026] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] See Figures 1-12 A raw material cutting device for crusher piston core includes a support 1, a protective frame 2 fixedly arranged around the support 1, a cutting component 3 installed on the top of the support 1, and a clamping component 4 installed on the top of the support 1.

[0028] The function of bracket 1 is to provide a stable load-bearing foundation for the entire cutting device, ensure that all components of the device are firmly installed and operate smoothly, provide rigid support for the cutting operation, and prevent shaking or displacement during the operation of the device.

[0029] The protective frame 2 is designed to enclose the device, isolate the cutting area, prevent metal shavings generated during the cutting process from flying outwards, and prevent workers from accidentally touching the high-speed cutting components, thus ensuring the safety of the operation.

[0030] The function of the cutting component 3 is to perform fixed-length cutting of the raw material bar of the crusher piston core. The cutting structure at high speed completes the cutting operation of the bar, ensuring that the cut surface is flat and the dimensions are accurate.

[0031] The function of clamping component 4 is to clamp and fix the raw material bar in multiple segments simultaneously, offset the shearing force generated during the cutting process, prevent the bar from axial movement and radial deflection, provide a stable clamping foundation for the cutting operation, and ensure cutting accuracy and blank quality.

[0032] The clamping assembly 4 includes a first support plate 401, which is fixedly disposed on the top side of the bracket 1. A first mounting plate 402 is fixedly disposed on the first support plate 401. At least three sets of first sliding grooves 403 are provided on the first mounting plate 402. First sliders 404 are slidably disposed in opposite directions within the first sliding grooves 403. A first clamping block 405 is fixedly disposed on the top of the first slider 404. The first clamping blocks 405 are disposed opposite to each other. An installation groove 406 is provided at the center of the first clamping block 405. A second sliding groove 407 is provided on both sides of the first clamping block 405. The second sliding groove 407 communicates with the installation groove 406. Wedge blocks 408 are slidably disposed on both sides of the installation groove 406. The wedge blocks 408 are slidably disposed with the second sliding groove 407.

[0033] The function of the first support plate 401 is to provide stable support and fixation for the first mounting plate 402, raise the installation height of the first mounting plate 402, and make the working height of the first mounting plate 402 match the height of bar material conveying and cutting, so as to ensure that the bar material is always in a horizontal conveying state.

[0034] The function of the first mounting plate 402 is to provide a unified mounting carrier for the front-end clamping structure and the automatic feeding structure, ensuring that the installation position of each component is accurate and the operation is synchronized, and avoiding deviations in movement that may affect the clamping and feeding effect.

[0035] The function of the first groove 403 is to provide a directional sliding path for the first slider 404, strictly limit the movement direction of the first slider 404, and ensure that the first sliders 404 on both sides can slide synchronously towards each other in the horizontal direction without deviation or jamming.

[0036] The function of the first slider 404 is to drive the first clamping block 405 at the top to move synchronously. By sliding the slider in opposite directions, the distance between the first clamping blocks 405 on both sides can be adjusted to adapt to the clamping requirements of bars with different diameter specifications.

[0037] The function of the first clamping block 405 is to clamp and fix the bar from both sides, providing a stable clamping force. Multiple sets of first clamping blocks 405 clamp simultaneously to achieve multi-segment fixation of the long bar, preventing the bar from shaking during cutting.

[0038] The purpose of the mounting slot 406 is to provide space for the wedge block 408 to be installed and slid, and at the same time provide a centrally placed area for the bar stock, ensuring that the bar stock is always in the clamping center position and will not shift vertically.

[0039] The function of the second groove 407 is to provide sliding guidance for the wedge block 408, ensuring that the wedge block 408 can slide smoothly along the groove without tilting or jamming, making the opening and closing action of the wedge block 408 smoother.

[0040] The function of the wedge block 408 is to adaptively fit the outer wall contour of bars of different diameters. By increasing the clamping contact area with the bar through the inclined structure, the clamping force is distributed more evenly, further improving the stability of the clamping and preventing the bar from slipping or moving during cutting.

[0041] A first connecting block 13 is fixedly provided on the side of the wedge block 408. A first rotating rod 14 is rotatably provided on the first connecting block 13. A second rotating rod 15 is rotatably provided between the first rotating rods 14. A first sliding groove 16 is provided on both sides of the first clamping block 405. A sliding column 17 is slidably provided in the first sliding groove 16. The sliding column 17 is rotatably provided at the center of the second rotating rod 15.

[0042] The function of the first connecting block 13 is to connect the wedge block 408 and the first rotating rod 14, provide a stable rotation fulcrum for the first rotating rod 14, and ensure that the rotation action of the first rotating rod 14 can be synchronously transmitted to the wedge block 408, so as to realize the synchronous opening and closing of the wedge blocks 408 on both sides.

[0043] The function of the first rotating rod 14 is to transmit the rotational power of the second rotating rod 15, thereby driving the wedge blocks 408 on both sides to move synchronously in opposite directions, ensuring that the clamping force of the wedge blocks 408 on both sides is consistent, and preventing the situation of loosening of clamping on one side.

[0044] The function of the second rotating rod 15 is to cooperate with the up and down movement of the sliding column 17 to drive the first rotating rods 14 on both sides to rotate synchronously, thereby realizing the synchronous control of the opening and closing action of the wedge block 408. The synchronous adjustment of the wedge blocks 408 on both sides can be completed with one action, making the operation more convenient.

[0045] The function of the first sliding groove 16 is to provide directional sliding space for the sliding column 17, strictly limit the movement trajectory of the sliding column 17, and ensure that the sliding column 17 can only move up and down in the vertical direction, without any left or right deviation.

[0046] The function of the sliding column 17 is to drive the second rotating rod 15 to complete the rotation action. By pressing or pulling the sliding column 17, the angle of the second rotating rod 15 can be controlled, thereby controlling the opening and closing of the wedge block 408. The clamping force can be finely adjusted without additional tools, adapting to the adaptive clamping of bars of different diameters.

[0047] A connecting plate 18 is fixedly installed at the bottom of the first slider 404, and a first support seat 19 is fixedly installed at the top of the connecting plate 18. Second support seats 20 are fixedly installed on both sides of the first mounting plate 402. A bidirectional lead screw 21 is rotatably installed between the second support seats 20. The bidirectional lead screw 21 is threadedly connected to the first support seat 19. A worm gear 22 is fixedly installed at one end of the bidirectional lead screw 21. A protective cover 23 is fixedly installed on the side of the first mounting plate 402. A worm 24 adapted to the worm gear 22 is rotatably installed on the protective cover 23. A first bevel gear 25 is fixedly installed on the side of the worm gear 24. A first handle 26 is rotatably installed on the protective cover 23. A second bevel gear 27 is fixedly installed on the side of the first handle 26. The second bevel gear 27 meshes with the first bevel gear 25.

[0048] The function of the connecting plate 18 is to connect the two opposing first sliders 404 into a whole, ensuring that the movement of the two first sliders 404 is completely synchronized, avoiding deviation of movement of one side of the slider, and providing a stable installation and fixing position for the first support base 19.

[0049] The function of the first support seat 19 is to convert the rotational motion of the bidirectional lead screw 21 into linear motion, and drive the connecting plate 18 and the first slider 404 to move synchronously along the bidirectional lead screw 21 through threaded engagement, so as to achieve precise adjustment of the spacing of the first clamping block 405.

[0050] The function of the second support seat 20 is to provide rotational support at both ends of the bidirectional lead screw 21, ensuring that the bidirectional lead screw 21 rotates smoothly and does not experience radial sway or axial movement, thus ensuring transmission accuracy.

[0051] The function of the bidirectional lead screw 21 is to drive the first support seats 19 on both sides to move synchronously in opposite directions by rotating itself, thereby realizing the synchronous opening and closing of the first clamping blocks 405 on both sides, ensuring that the clamping center is always in the same position and that there will be no problem of clamping eccentricity.

[0052] The function of the worm gear 22 is to work with the worm 24 to complete the transmission. By utilizing the self-locking characteristic of the worm gear 22 and worm 24 transmission, it ensures that there will be no reverse loosening after the clamping distance is adjusted, and always maintains a stable clamping force.

[0053] The function of the protective cover 23 is to provide a fully enclosed protection for the transmission structure composed of worm gear 22, worm 24 and bevel gear, to prevent dust and metal debris generated during cutting from entering the transmission structure, to prevent wear and jamming of transmission components, and to extend the service life of the transmission structure.

[0054] The worm 24 is used to transmit rotational power, which drives the worm wheel 22 and the double-acting screw 21 to rotate. At the same time, the self-locking characteristics of the worm wheel 22 and worm 24 are used to lock the clamping state without the need for an additional locking structure.

[0055] The function of the first bevel gear 25 is to cooperate with the second bevel gear 27 to change the transmission direction, converting the horizontal rotational power of the first handle 26 into the vertical rotational power of the worm gear 24, making the adjustment of the clamping distance easier and more convenient.

[0056] The first handle 26 provides a point of force for manual operation, making it convenient for staff to rotate and adjust the clamping distance. The clamping adjustment can be completed without additional power, making it suitable for on-site operation scenarios without external power supply.

[0057] The function of the second bevel gear 27 is to mesh with the first bevel gear 25 to realize the conversion of the transmission direction. At the same time, the gear transmission ratio reduces the operating force, making clamping and adjustment more effortless.

[0058] A support block 28 is fixedly installed at the top center of the first mounting plate 402, a bearing frame 29 is fixedly installed on the top of the support block 28, and a rotating roller 30 is rotatably installed between the bearing frames 29.

[0059] The function of the support block 28 is to raise the installation height of the support frame 29 so that the top support surface of the support frame 29 is on the same horizontal line as the clamping center of the first clamping block 405, ensuring that the bar stock remains horizontal during clamping and conveying and will not bend or tilt.

[0060] The function of the support frame 29 is to provide stable installation support for the rotating roller 30, ensure the accurate installation position of the rotating roller 30, and provide bottom support for the bar stock.

[0061] The function of the rotating roller 30 is to directly support the bottom of the bar stock. By rotating itself, it converts the sliding friction during bar stock conveying into rolling friction, which greatly reduces the resistance during bar stock conveying, making bar stock feeding smoother. At the same time, it avoids the sliding friction from scratching the surface of the bar stock and ensures the surface quality of the raw material.

[0062] A fixing plate 31 is fixedly installed on the side of the first mounting plate 402. A reinforcing rib 32 is fixedly installed at the bottom of the fixing plate 31. The other end of the reinforcing rib 32 is fixedly installed to the first mounting plate 402. A third sliding groove 33 is opened at the top of the fixing plate 31. A pushing block 34 is slidably installed in the third sliding groove 33. A first hydraulic rod 35 is fixedly installed at the bottom of the first mounting plate 402. The output shaft of the first hydraulic rod 35 is connected to the side of the pushing block 34 through a flange. A pushing ring 36 is fixedly installed at the top of the pushing block 34. A transverse groove 37 is opened on both sides of the pushing ring 36. A first clamping plate 38 is slidably installed in the transverse groove 37. A transverse plate 39 is fixedly installed on the side of the first clamping plate 38. The transverse plate 39 is slidably installed with the inner wall of the transverse groove 37.

[0063] The function of the fixing plate 31 is to provide an extended mounting carrier for the automatic feeding structure, expand the installation space of the feeding structure, and ensure smooth connection between the feeding structure and the clamping structure.

[0064] The function of the reinforcing rib 32 is to enhance the connection strength between the fixed plate 31 and the first mounting plate 402, form a triangular support structure, prevent the fixed plate 31 from deforming or breaking under stress during the feeding process, and improve the operational stability of the feeding structure.

[0065] The function of the third chute 33 is to provide a directional sliding path for the push block 34, strictly limit the movement direction of the push block 34, and ensure that the push block 34 can only make linear reciprocating motion along the conveying direction of the bar stock, without deviation or jamming.

[0066] The function of the first hydraulic rod 35 is to provide stable linear drive power for the reciprocating movement of the push block 34. The extension and retraction of the hydraulic rod drives the push block 34 to complete the feeding and resetting actions, realizing the progressive automatic feeding of the bar stock without manual pushing, thus reducing labor intensity.

[0067] The function of the pusher block 34 is to support the pusher ring 36 and the end clamping structure, drive the bar stock to complete the feeding movement synchronously, and ensure that the feeding distance is accurate and controllable.

[0068] The function of the push ring 36 is to provide a passage for the bar stock and to provide installation space for the first clamping plates 38 on both sides, so as to ensure that the first clamping plates 38 can stably clamp the end of the bar stock.

[0069] The function of the transverse groove 37 is to provide sliding guidance for the transverse plate 39 and the first clamping plate 38, ensuring that the first clamping plate 38 can open and close smoothly in the horizontal direction without tilting or jamming.

[0070] The function of the first clamping plate 38 is to clamp the ends of the bar stock from both sides, ensuring that the bar stock can be fed synchronously when the push block 34 moves, and preventing feeding slippage or feeding distance deviation.

[0071] The function of the horizontal plate 39 is to connect the first clamping plate 38, limit the sliding stroke of the first clamping plate 38, prevent the first clamping plate 38 from disengaging from the horizontal groove 37, and at the same time ensure that the movement of the first clamping plates 38 on both sides is synchronized.

[0072] A groove 40 is provided between the push block 34 and the push ring 36. A second connecting block 41 is fixedly provided on the side of the push block 34. A first rotating rod 42 is rotatably provided inside the second connecting block 41. The first rotating rod 42 is slidably provided with the groove 40. A third connecting block 43 is fixedly provided at the other end of the first rotating rod 42. A connecting plate 44 is fixedly provided between the bottoms of the third connecting blocks 43. A second hydraulic rod 45 is fixedly provided at the bottom of the push block 34. The top of the second hydraulic rod 45 is fixedly provided with the connecting plate 44.

[0073] The function of the inclined groove 40 is to provide space for the sliding and rotation of the first rotating rod 42, so that the first rotating rod 42 can drive the horizontal plate 39 and the first clamping plate 38 to complete the horizontal opening and closing action during the up and down movement, thereby realizing the conversion of the power direction.

[0074] The function of the second connecting block 41 is to provide a stable rotation fulcrum for the first rotating rod 42, ensuring that the transmission action of the first rotating rod 42 is stable and reliable, and that there will be no fulcrum offset.

[0075] The function of the first rotating rod 42 is to convert the vertical linear movement of the connecting plate 44 into the horizontal movement of the horizontal plate 39, thereby driving the first clamping plate 38 to complete the clamping and releasing action, and realizing the automatic control of end clamping.

[0076] The function of the third connecting block 43 is to connect the first rotating rod 42 and the connecting plate 44, so as to ensure that the first rotating rods 42 on both sides can move synchronously, thereby ensuring that the clamping force of the first clamping plates 38 on both sides is consistent.

[0077] The function of the connecting plate 44 is to synchronously transmit the driving power of the second hydraulic rod 45 to the first rotating rods 42 on both sides, so as to ensure that the first clamping plates 38 on both sides open and close synchronously and that there will be no loosening of clamping on one side.

[0078] The function of the second hydraulic rod 45 is to provide driving power for the up and down movement of the connecting plate 44. The extension and retraction of the hydraulic rod controls the clamping and releasing of the first clamping plate 38, realizing automatic clamping and release during the feeding process without manual operation.

[0079] A second support plate 46 is fixedly installed on the other side of the top of the bracket 1. A second mounting plate 47 is fixedly installed on the second support plate 46. A base 48 is fixedly installed on the second mounting plate 47. An arc plate 49 is fixedly installed on the base 48. The arc plate 49 is adapted to the position of the support frame 29. A second sliding groove 50 is opened on both sides of the arc plate 49. A vertical rod 51 is slidably installed in the second sliding groove 50. A support plate 52 is fixedly installed between the tops of the vertical rods 51. A slot 53 is opened on the side of the support plate 52. A pull rod 54 is slidably installed in the slot 53. A threaded handle 55 is threadedly connected to the side of the pull rod 54. A second clamping plate 56 is fixedly installed at the bottom of the threaded handle 55. A limit plate 57 is fixedly installed on the other side of the support plate 52. A limit handle 58 is threadedly connected to the limit plate 57. The limit handle 58 is adapted to the top of the pull rod 54.

[0080] The function of the second support plate 46 is to provide stable support and fixation for the second mounting plate 47, ensuring that the end support structure and the front clamping structure are at the same horizontal height, so that the cutting end of the bar stock always remains horizontal.

[0081] The function of the second mounting plate 47 is to provide an installation carrier for the support structure and clamping structure at the end of the bar stock, ensuring that the installation position of each component is accurate and adapts to the movement of the front end structure.

[0082] The base 48 is used to raise the installation height of the arc plate 49, ensuring that the support surface of the arc plate 49 is fully matched with the height of the support frame 29, and providing stable support for the end of the bar stock.

[0083] The function of the arc plate 49 is to support the cutting end of the bar stock. In the final stage of bar stock cutting, it provides continuous bottom support for the bar stock, preventing the bar stock from suddenly breaking due to its own weight, and completely preventing quality problems such as chipped edges, burrs, and tearing of the cross section of the billet.

[0084] The function of the second sliding groove 50 is to provide directional sliding guidance for the vertical rod 51, ensuring that the vertical rod 51 can slide smoothly along the length direction of the arc plate 49, adjusting the position of the end support and clamping, and adapting to the cutting requirements of different lengths of bar material.

[0085] The function of the vertical rod 51 is to provide stable support for the support plate 52 and the end clamping structure, and to drive the end clamping structure to adjust its position synchronously, so as to ensure that the support and clamping position always fits the cutting end of the bar.

[0086] The function of the support plate 52 is to provide an installation carrier for the end clamping structures such as the tie rod 54 and the second clamping plate 56, so as to ensure the stable installation of each component.

[0087] The function of the slot 53 is to provide sliding space for the pull rod 54, so that the operator can adjust the left and right position of the pull rod 54 according to the diameter of the bar, and thus adjust the clamping position of the second clamping plate 56.

[0088] The function of the pull rod 54 is to provide installation support for the threaded handle 55 and the second clamping plate 56, and to drive the second clamping plate 56 to adjust the clamping position to adapt to the clamping requirements of bars of different diameters.

[0089] The function of the threaded handle 55 is to rotate itself to drive the second clamping plate 56 to move up and down, adjust the clamping force of the second clamping plate 56, and stably clamp and fix the cutting end of the bar stock.

[0090] The function of the second clamping plate 56 is to work with the arc plate 49 to clamp the cutting end of the bar from the top, forming a multi-segment synchronous clamping with the first clamping block 405 at the front end, further preventing the bar from shaking or deflecting during cutting, and ensuring a flat cutting surface.

[0091] The function of the limit plate 57 is to provide installation support for the limit handle 58 and to provide the basis for the threaded connection of the limit handle 58.

[0092] The function of the limit handle 58 is to press the pull rod 54 downward by rotating it, fix the position of the pull rod 54, prevent the second clamping plate 56 from shifting during the clamping process, and ensure the stability of the end clamping.

[0093] A rotating shaft 59 is rotatably mounted between the vertical rods 51. A circular plate 60 is rotatably mounted on the rotating shaft 59. The circular plate 60 is adapted to the arc plate 49. One end of the rotating shaft 59 passes through the vertical rods 51. A mounting bracket 61 is fixedly mounted at the bottom of the support plate 52. A third hydraulic rod 62 is fixedly mounted on the side of the mounting bracket 61. A third clamping plate 63 is connected to the side of the third hydraulic rod 62 through a flange. The third clamping plate 63 is adapted to the rotating shaft 59.

[0094] The function of the rotating shaft 59 is to provide rotational support for the circular plate 60, ensuring that the circular plate 60 can rotate freely around the rotating shaft 59 and rotate synchronously with the bar stock during bar stock feeding, thereby reducing the resistance of bar stock conveying.

[0095] The function of the round plate 60 is to fit the end face of the bar stock, move synchronously with the bar stock during the feeding process, and at the same time assist in supporting the bottom of the bar stock, further improving the support effect of the end of the bar stock, and adapting to the feeding and cutting needs of bar stock of different lengths.

[0096] The function of the mounting bracket 61 is to provide a fixed mounting support for the third hydraulic rod 62, ensuring that the installation position of the third hydraulic rod 62 is accurate and matches the position of the rotating shaft 59.

[0097] The function of the third hydraulic rod 62 is to drive the third clamping plate 63 to move horizontally, control the clamping and loosening of the rotating shaft 59, and realize the locking and releasing of the rotating state of the circular plate 60.

[0098] The function of the third clamping plate 63 is to clamp the rotating shaft 59 during cutting, lock the position of the round plate 60, and thus fix the end position of the bar stock to prevent axial movement of the bar stock during the cutting process and ensure accurate cutting dimensions.

[0099] A collection frame 64 is slidably provided at the bottom of the second support base 20, and a second handle 65 is fixedly provided on the side of the collection frame 64. The position of the collection frame 64 is adapted to the position of the arc plate 49.

[0100] The function of the collection frame 64 is to collect the cut crusher piston core blanks and to receive the metal scraps generated during the cutting process, so as to achieve centralized storage of the blanks and scraps for convenient subsequent unified processing.

[0101] The second handle 65 is used to facilitate the operation of the staff to pull the collection box 64, quickly complete the removal of the billet and the cleaning of the debris. The operation is simple and convenient and requires no additional tools.

[0102] The cutting assembly 3 includes a sliding frame 301, which is slidably mounted on the bracket 1. The sliding frame 301 is located between the first support seat 19 and the second support seat 20. Mounting wheels 302 are rotatably mounted on both sides of the sliding frame 301. A band saw 303 is driven between the mounting wheels 302. A motor 304 is fixedly mounted on the side of the sliding frame 301. The output shaft of the motor 304 is connected to the mounting wheel 302 on one side by a key. A fixing rod 305 is fixedly mounted at the bottom center of the sliding frame 301. Reinforcing rods 306 are fixedly mounted on both sides of the fixing rod 305. The other end of the reinforcing rod 306 is fixedly mounted to the sliding frame 301. A correction frame 307 is fixedly mounted at the bottom of the fixing rod 305. Correcting wheels 308 are rotatably mounted on both sides of the correction frame 307. The correcting wheels 308 are located on both sides of the band saw 303.

[0103] The sliding frame 301 provides a unified mounting carrier for cutting components such as the band saw 303 and the motor 304. It can also slide along the bracket 1 to adjust the cutting position and drive the band saw 303 to complete the feed cutting action. The mounting wheel 302 provides tension support and transmission support for the band saw 303, drives the band saw 303 to rotate at high speed, and provides power for the cutting operation.

[0104] The function of the band saw 303 is to cut raw material bars at high speed, ensuring a smooth and flat cut surface with dimensional accuracy, and meeting the high-precision cutting requirements of crusher piston core raw materials.

[0105] The function of motor 304 is to provide stable rotational drive power for mounting wheel 302 and band saw 303, ensuring stable cutting speed of band saw 303 and improving cutting quality and efficiency.

[0106] The function of the fixing rod 305 is to provide fixed support for the correction frame 307, ensuring that the installation position of the correction frame 307 corresponds precisely to the cutting position of the band saw 303.

[0107] The function of the reinforcing rod 306 is to enhance the connection strength between the fixed rod 305 and the sliding frame 301, forming a triangular reinforcement structure to prevent the fixed rod 305 from deforming under stress during the cutting process and to ensure that the position of the correction frame 307 remains stable.

[0108] The function of the correction frame 307 is to provide installation support for the correction wheel 308 and ensure that the installation position of the correction wheel 308 is accurate.

[0109] The function of the straightening wheel 308 is to limit and correct the band saw 303 from both sides, preventing the band saw 303 from deviating, shaking, or swaying during the cutting process, ensuring the accuracy of the cutting path of the band saw 303, and improving the cutting accuracy and the flatness of the cross section.

[0110] First, refer to Figure 4 , Figure 5 and Figure 6 In this embodiment, multiple sets of synchronously opening and closing first clamping blocks 405, together with wedge blocks 408, adaptive clamping structure, can realize multi-segment synchronous clamping of long bars. The clamping force is evenly distributed and the clamping contact area is large, which can fully offset the shearing force generated by the band saw 303 during cutting, avoid axial movement and radial deflection of the bar, and ensure from the source that the cut end face is flat and tear-free, and the dimensional accuracy of the blank fully meets the processing requirements of the piston core.

[0111] Then, refer to Figure 5 , Figure 8 and Figure 12In this embodiment, the bidirectional lead screw 21, combined with the worm gear 22 and worm 24 transmission structure, can flexibly adjust the clamping distance of the first clamping block 405. The wedge block 408 can adaptively fit the outer wall of bars of different diameters. The slidable vertical rod 51 and the circular plate 60 can adapt to the cutting requirements of bars of different lengths. It can be compatible with various specifications of raw material bars without changing the clamps, which greatly improves the versatility and applicability of the device.

[0112] Secondly, see Figure 12 In this embodiment, the arc plate 49 and the adjustable circular plate 60 form an auxiliary support structure for the cutting end, which can stably support the cutting end of the bar stock throughout the entire process, avoid sudden breakage of the bar stock due to gravity at the end of the cutting stage, completely eliminate quality problems such as burrs, chipping, and tearing of the cross-section, and effectively ensure the integrity of the billet and the quality of the finished product.

[0113] See again Figure 7 , Figure 9 and Figure 10 In this embodiment, the push ring 36 driven by the first hydraulic rod 35, in conjunction with the automatic clamping structure of the first clamping plate 38, can realize the progressive automatic feeding of the bar stock. The feeding distance is precise and controllable, eliminating the need for manual pushing of the bar stock, greatly reducing the labor intensity of the workers, and significantly improving the continuity and efficiency of the cutting production.

[0114] Finally, see Figure 4 In this embodiment, symmetrical straightening wheels 308 are provided on both sides of the band saw 303, which can perform real-time limit correction on the band saw 303 to avoid deviation and swaying during the cutting process, ensuring accurate cutting dimensions, strong overall structural rigidity, and continuous and controllable process of clamping, feeding, cutting and supporting. It perfectly adapts to the production requirements of high-precision cutting of crusher piston core raw materials, and effectively ensures the efficiency of subsequent machining of piston cores and the long-term service performance of finished products.

[0115] The crusher piston core uses a raw material cutting device. In use, the raw material bar for the crusher piston core is first passed through the push ring 36 and multiple sets of first clamping blocks 405, and then stably placed on the rotating roller 30 of the support frame 29. The cut end of the bar is placed on the arc plate 49. Rotating the first handle 26 drives the bidirectional lead screw 21 to rotate via the transmission of the bevel gear, worm gear 22, and worm 24, adjusting the spacing of the first clamping blocks 405. This, combined with the wedge block 408, allows for multi-segment synchronous clamping of the bar. Then, the second hydraulic rod 45 drives the first clamping plate 38 to clamp the end of the bar. The position of the vertical rod 51 is adjusted. Afterwards, rotating the threaded handle 55 drives the second clamping plate 56 to fix the cutting end of the bar stock. Starting the motor 304 drives the mounting wheel 302 and band saw 303 to rotate at high speed, pushing the sliding frame 301 to drive the band saw 303 to complete the cutting operation of the bar stock. After the cutting is completed, the first hydraulic rod 35 drives the push block 34 to complete the automatic feeding of the bar stock. Repeating the cutting action can complete continuous production. The cut piston core blank falls into the collection frame 64 for centralized collection. The debris generated by cutting is also collected in the collection frame 64 at the same time. The collection frame 64 can be pulled out periodically by the second handle 65 to complete the cleaning.

[0116] This device is designed to address the industry pain points of cutting crusher piston core raw materials. It completely solves the core problems of traditional cutting devices, such as the inability to achieve multi-segment synchronous clamping of long bars, easy movement and deflection of bars during cutting, poor cross-sectional quality of billets, poor adaptability of clamping structure, lack of auxiliary support at the cutting end which easily causes the billet to chip, low degree of automation of feeding, and low production efficiency.

[0117] The multi-segment synchronous clamping structure, combined with the adaptive wedge clamping design, ensures a more stable clamping of the bar stock, effectively counteracting the cutting shearing force and preventing bar stock movement and deflection from the source. This guarantees a smooth cut surface and precise dimensions. The clamping adjustment structure, driven by the bidirectional lead screw 21 and worm gear 22 and worm 24, is easy to operate, has good self-locking properties, and can quickly adapt to bars of different diameters without frequent clamp changes. The end support structure, composed of the arc plate 49 and the adjustable circular plate 60, perfectly solves the problem of easy breakage and chipping of the bar stock at the end of the cutting process, ensuring the integrity of the billet. The hydraulically driven automatic feeding structure provides precise feeding distance and smooth operation, significantly reducing manual labor intensity and improving continuous production efficiency. The band saw 303, combined with the double-sided straightening wheels 308, ensures no deviation during the cutting process, high precision, and good cross-sectional quality.

[0118] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A raw material cutting device for crusher piston cores, characterized in that, include: Support (1); A protective frame (2) is fixedly installed around the bracket (1); A cutting assembly (3) is mounted on top of the bracket (1); and A clamping assembly (4) is mounted on the top of the bracket (1). The clamping assembly (4) includes a first support plate (401), which is fixedly disposed on one side of the top of the bracket (1). A first mounting plate (402) is fixedly disposed on the first support plate (401). At least three sets of first sliding grooves (403) are provided on the first mounting plate (402). First sliders (404) are slidably disposed in opposite directions within the first sliding grooves (403). A first clamping block (405) is fixedly provided on the top of the first clamping block (404). The first clamping blocks (405) are arranged opposite each other. An installation groove (406) is provided at the center of the first clamping block (405). A second sliding groove (407) is provided on both sides of the first clamping block (405). The second sliding groove (407) communicates with the installation groove (406). A wedge block (408) is slidably provided on both sides of the installation groove (406). The wedge block (408) is slidably provided with the second sliding groove (407).

2. The raw material cutting device for crusher piston cores according to claim 1, characterized in that, A first connecting block (13) is fixedly provided on the side of the wedge block (408). A first rotating rod (14) is rotatably provided on the first connecting block (13). A second rotating rod (15) is rotatably provided between the first rotating rods (14). A first sliding groove (16) is provided on both sides of the first clamping block (405). A sliding column (17) is slidably provided in the first sliding groove (16). The sliding column (17) is rotatably provided at the center of the second rotating rod (15).

3. The raw material cutting device for crusher piston cores according to claim 1, characterized in that, A connecting plate (18) is fixedly disposed between the bottoms of the first slider (404). A first support seat (19) is fixedly disposed on the top of the connecting plate (18). A second support seat (20) is fixedly disposed on both sides of the first mounting plate (402). A bidirectional lead screw (21) is rotatably disposed between the second support seats (20). The bidirectional lead screw (21) is connected to the first support seat (19) by a thread. A worm gear (22) is fixedly disposed at one end of the bidirectional lead screw (21). A protective cover (23) is fixedly disposed on the side of the first mounting plate (402). A worm (24) adapted to the worm gear (22) is rotatably disposed on the protective cover (23). A first bevel gear (25) is fixedly disposed on the side of the worm gear (24). A first handle (26) is rotatably disposed on the protective cover (23). A second bevel gear (27) is fixedly disposed on the side of the first handle (26). The second bevel gear (27) meshes with the first bevel gear (25).

4. The raw material cutting device for crusher piston cores according to claim 1, characterized in that, A support block (28) is fixedly provided at the top center of the first mounting plate (402), and a bearing frame (29) is fixedly provided on the top of the support block (28). A rotating roller (30) is rotatably provided between the bearing frames (29).

5. The raw material cutting device for crusher piston cores according to claim 1, characterized in that, A fixing plate (31) is fixedly provided on the side of the first mounting plate (402). A reinforcing rib (32) is fixedly provided at the bottom of the fixing plate (31). The other end of the reinforcing rib (32) is fixedly provided to the first mounting plate (402). A third sliding groove (33) is provided at the top of the fixing plate (31). A pushing block (34) is slidably provided in the third sliding groove (33). A first hydraulic rod (35) is fixedly provided at the bottom of the first mounting plate (402). The output shaft of the first hydraulic rod (35) is connected to the side of the pushing block (34) through a flange. A pushing ring (36) is fixedly provided at the top of the pushing block (34). A transverse groove (37) is provided on both sides of the pushing ring (36). A first clamping plate (38) is slidably provided in the transverse groove (37). A transverse plate (39) is fixedly provided on the side of the first clamping plate (38). The transverse plate (39) is slidably provided with the inner wall of the transverse groove (37).

6. The raw material cutting device for crusher piston cores according to claim 5, characterized in that, A groove (40) is provided between the push block (34) and the push ring (36). A second connecting block (41) is fixedly provided on the side of the push block (34). A first rotating rod (42) is rotatably provided inside the second connecting block (41). The first rotating rod (42) is slidably provided with the groove (40). A third connecting block (43) is fixedly provided at the other end of the first rotating rod (42). A connecting plate (44) is fixedly provided between the bottoms of the third connecting blocks (43). A second hydraulic rod (45) is fixedly provided at the bottom of the push block (34). The top of the second hydraulic rod (45) is fixedly provided with the connecting plate (44).

7. The raw material cutting device for crusher piston cores according to claim 4, characterized in that, A second support plate (46) is fixedly installed on the other side of the top of the bracket (1). A second mounting plate (47) is fixedly installed on the second support plate (46). A base (48) is fixedly installed on the second mounting plate (47). An arc plate (49) is fixedly installed on the base (48). The arc plate (49) is adapted to the position of the support frame (29). A second sliding groove (50) is opened on both sides of the arc plate (49). A vertical rod (51) is slidably installed in the second sliding groove (50). The top of the vertical rod (51) is... A support plate (52) is fixedly installed between the two sides. A slot (53) is provided on the side of the support plate (52). A pull rod (54) is slidably installed in the slot (53). A threaded handle (55) is threadedly connected to the side of the pull rod (54). A second clamping plate (56) is fixedly installed at the bottom of the threaded handle (55). A limit plate (57) is fixedly installed on the other side of the support plate (52). A limit handle (58) is threadedly connected to the limit plate (57). The limit handle (58) is adapted to the top of the pull rod (54).

8. The raw material cutting device for crusher piston cores according to claim 7, characterized in that, A rotating shaft (59) is rotatably arranged between the vertical rods (51). A circular plate (60) is rotatably arranged on the rotating shaft (59). The circular plate (60) is adapted to the arc plate (49). One end of the rotating shaft (59) passes through the vertical rod (51). A mounting bracket (61) is fixedly arranged at the bottom of the support plate (52). A third hydraulic rod (62) is fixedly arranged on the side of the mounting bracket (61). A third clamping plate (63) is connected to the side of the third hydraulic rod (62) through a flange. The third clamping plate (63) is adapted to the rotating shaft (59).

9. A raw material cutting device for crusher piston cores according to claim 7, characterized in that, A collection frame (64) is slidably provided at the bottom of the second support plate (46), and a second handle (65) is fixedly provided on the side of the collection frame (64). The collection frame (64) is adapted to the position of the arc plate (49).

10. A raw material cutting device for a crusher piston core according to claim 1, characterized in that, The cutting assembly (3) includes a sliding frame (301), which is slidably mounted on the bracket (1). The sliding frame (301) is located between the support block (28) and the second support plate (46). Mounting wheels (302) are rotatably mounted on both sides of the sliding frame (301), and a band saw (303) is driven between the mounting wheels (302). A motor (304) is fixedly mounted on the side of the sliding frame (301), and the output shaft of the motor (304) is connected to the mounting wheel on one side. (302) A fixed rod (305) is fixedly installed at the bottom center of the sliding frame (301) by a key connection. A reinforcing rod (306) is fixedly installed on both sides of the fixed rod (305). The other end of the reinforcing rod (306) is fixedly installed to the sliding frame (301). A correction frame (307) is fixedly installed at the bottom of the fixed rod (305). A correction wheel (308) is rotatably installed on both sides of the correction frame (307). The correction wheel (308) is located on both sides of the band saw (303).

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