High-end powder steel saw blade heat treatment tension control device

Abstract

The invention relates to the technical field of saw blade machining, and discloses a high-end powder steel saw blade heat treatment tension control device which comprises a workbench, a longitudinal guide groove is formed in one side of the top of the workbench, a clamping mechanism is arranged in the guide groove, and a through mounting groove is formed in the side, corresponding to the guide groove, of the top of the workbench. A traction mechanism is arranged in the mounting groove, and a saw blade is arranged between the clamping mechanism and the traction mechanism. The clamping points of the traction mechanism to the saw blades continuously move backwards during stretching, the clamping points of the clamping mechanism also continuously move backwards, the distance between the two clamping points is roughly equal all the time, the pulling force needed during traction is fixed after the clamping force of the clamping wheel is adjusted, the fixed and identical pulling force acts on the saw blades with the same length, and therefore the saw blades with the same length can be pulled out. The whole saw blade is stretched in a multi-section mode, all positions on the saw blade can be stretched by the same amplitude while stress is eliminated, the stretching effect is better, and the product forming quality is higher.

Description

Technical Field

[0001] This invention relates to the field of saw blade processing technology, specifically a high-end powder steel saw blade heat treatment tension control device. Background Technology

[0002] A saw blade is a toothed steel strip primarily used for cutting materials such as metal, wood, and plastics. Its core function is achieved through the tooth structure. Based on material and application, saw blades can be categorized into four types: bimetallic saw blades, carbide sand saw blades, high-speed steel saw blades, and carbon steel saw blades. High-end powder steel saw blades are made from high-end powder steel, including VANADIS6, YXM42, CPM-10V, BOHLER-S600, TS520, and M390. These materials feature high hardness, high wear resistance, and high-temperature stability, making them suitable for precision machining applications such as cutting tools and molds.

[0003] Saw blades require heat treatment during processing to improve their hardness and toughness, extending their service life. Heat treatment increases the hardness of the saw blade, making it more resistant to wear and deformation during use, and also improving cutting efficiency. During heat treatment, stress is generated within the saw blade. To relieve this stress, the saw blade needs to be stretched to prevent shortening and bending during heat treatment. The front of the saw blade moves forward under the traction of the traction device, while the rear is compressed, and the saw blade is stretched during this forward traction process.

[0004] In existing technology, when pulling a saw blade, the front end of the blade is first clamped by a clamp connected to a pulling machine. The pulling machine then pulls the saw blade. During the pulling process, the clamp and the saw blade remain stable and in the same position, but the point where the saw blade is squeezed at the rear continuously moves backward. This causes the distance between the clamping point at the front end and the clamping point at the rear end of the saw blade to continuously increase. However, the pulling force provided by the pulling machine is fixed during each stretching process. This fixed pulling force is gradually applied to the increasingly longer saw blade, resulting in uneven stress on the saw blade. At the same time, the section at the front end of the saw blade that has already been stretched will continue to be stressed during subsequent stretching processes, causing the front end of the saw blade to become longer and the rear end to become shorter and shorter. This results in poor saw blade stretching effect and low product forming quality. Summary of the Invention

[0005] The problem to be solved by the present invention is to provide a high-end powder steel saw blade heat treatment tension control device to address the shortcomings of the prior art mentioned above, thereby solving the problems of uneven saw blade stress and poor tensile effect mentioned in the background art.

[0006] To solve the above problems, the present invention adopts the following solution: a high-end powder steel saw blade heat treatment tension control device, including a workbench, a longitudinal guide groove is provided on one side of the top of the workbench, a clamping mechanism is provided in the guide groove, a through mounting groove is provided on one side of the top of the workbench corresponding to the guide groove, a traction mechanism is provided in the mounting groove, a saw blade is provided between the clamping mechanism and the traction mechanism, the clamping mechanism clamps the rear end of the saw blade and can adjust the clamping force on the saw blade, the traction mechanism clamps the front end of the saw blade and continuously pulls the saw blade forward, the clamping mechanism and the traction mechanism cooperate to pull the saw blade and distribute the pulling force evenly to multiple stretched sections of the saw blade, and the traction mechanism continuously switches the clamping point of the saw blade backward during the pulling process.

[0007] As a further embodiment of the present invention: the clamping mechanism includes a cylinder and two oppositely arranged guide seats. Both guide seats are slidably connected in the guide groove. The output end of the cylinder is fixedly connected to one of the two guide seats. The top of both guide seats is provided with a groove. One end of each of the two grooves is slidably connected to a slide table. A clamping wheel is rotatably connected above each of the two slide tables. The two clamping wheels cooperate with each other to clamp the saw blade in the middle.

[0008] As a further embodiment of the present invention: a through first groove is provided on both sides of the bottom of the guide groove, a limiting block is fixed at the bottom of the two guide seats, the two limiting blocks are slidably connected in the first through groove on the corresponding side, and the lower ends of the two limiting blocks extend to the bottom of the first through groove. A gear is rotatably connected to the bottom of the worktable at the middle position of the two first through grooves, and a rack is fixed at the end of the two limiting blocks facing the gear. The two racks are arranged symmetrically in opposite directions and are respectively meshed with one side of the gear.

[0009] As a further embodiment of the present invention: two guide rods are symmetrically fixed in the groove, and a screw is fixed in the groove between the two guide rods. The slide is slidably sleeved on the two guide rods. The inner wall of the slide has a through hole on one side corresponding to the screw. One end of the screw is inserted into the hole and does not contact the inner wall of the hole. A nut is threaded to one end of the screw. A washer is rotatably connected to the side of the nut near the slide. The washer is movably sleeved on the screw. A first spring is provided between the washer and the slide. The first spring is sleeved on the screw. One end of the first spring is fixedly connected to the washer and the other end is fixedly connected to one side wall of the slide.

[0010] As a further embodiment of the present invention: the traction mechanism includes a guide rail, which is embedded and fixed in the mounting groove. A track is provided on the top of the guide rail. A first traction member and a second traction member are slidably connected to both sides of the track. A motor is embedded and installed inside the guide rail on the side corresponding to the second traction member. Both the first traction member and the second traction member are inverted U-shaped structures, with a clamping part at the top and a sliding part at the bottom. The sliding parts of the first traction member and the second traction member are slidably connected in the track. The clamping parts of the first traction member and the second traction member are slidably connected to the top of the guide rail. A clamping component is provided in the clamping part of the first traction member and the clamping part of the second traction member. A driving component is provided in the sliding part of the second traction member.

[0011] As a further embodiment of the present invention: pulleys are rotatably connected to both sides of the guide rail via brackets, and a belt is connected between the two pulleys. A first clamping block is fixed to the lower side of the first traction member via a bracket, and the first clamping block is clamped and fixed to the lower side of the belt. A second clamping block is fixed to the lower side of the second traction member via a bracket, and the second clamping block is clamped and fixed to the upper side of the belt. A second through groove is provided on the inner wall of the bottom of the track. A first slider and a second slider are fixed to the bottom of the first traction member and the second traction member, respectively, and the first slider and the second slider are slidably connected in the second through groove.

[0012] As a further embodiment of the present invention: the clamping assembly includes a sliding column and a clamp fixed to one end of the sliding column. Both the clamping portion of the first traction member and the clamping portion of the second traction member are provided with a sliding cavity and a limiting cavity. The sliding cavity is a cylindrical cavity, and the limiting cavity is an arc-shaped cavity with its inner wall expanding and sloping from the outside to the inside. The sliding column is movably disposed in the sliding cavity, and the clamp is slidably inserted into the limiting cavity. A sealing ring is fixed at the port of the sliding cavity, and one end of the sliding column slides through the... The sealing ring, the chuck and the sliding column both have square holes with two through holes along their respective central axes. The two square holes are interconnected and the saw blade is inserted through them. Both sides of the front end of the chuck have through holes connected to the square holes. Abutment pins are slidably inserted into each of the two through holes. The two abutment pins are arranged opposite each other and are located on the front and rear sides of the saw blade respectively. The ends of the two abutment pins facing the saw blade are ground into inclined ends, and the inclined ends are adapted to the arc surface of the inner wall of the limiting cavity.

[0013] As a further embodiment of the present invention: a lever is fixed to the top of the chuck, and openings are provided on the top inner walls of the clamping parts of the first traction member and the clamping parts of the second traction member. One end of the lever is slidably connected in the opening and the top end of the lever extends to the outside of the opening. A second spring is sleeved on the outside of the sliding column. One end of the second spring is fixedly connected to one side wall of the chuck and the other end is fixedly connected to one side wall of the sealing ring.

[0014] As a further embodiment of the present invention: the driving assembly includes a limiting cylinder, and an installation cavity is provided in the sliding part of the second traction member. The limiting cylinder is fixed in the installation cavity. A rotating column is movably arranged inside the limiting cylinder. A continuously tortuous guide groove is provided around the surface of the rotating column. A through limiting hole is provided on the inner wall of both sides of the guide groove at one end of the limiting cylinder. A limiting pin is movably connected in each of the two limiting holes. One end of each of the two limiting pins is inserted into the guide groove and is slidably connected to the inner wall of the guide groove. A connecting rod is fixed to one end of the rotating column, and one end of the connecting rod is fixedly connected to one end of the motor output shaft.

[0015] As a further embodiment of the present invention: guide rollers are provided on both sides of the top of the workbench corresponding to the clamping mechanism, and the two guide rollers are rotatably connected to the workbench through a bracket. The two guide rollers have an inwardly recessed annular groove on one side of the roller body corresponding to the saw blade, and the bottom of the saw blade rests in the annular groove.

[0016] The technical effects of this invention are as follows: In this invention, a clamping mechanism is provided, in which the saw blade is clamped in the middle by two clamping wheels. The clamping force of the two clamping wheels on the saw blade is adjustable, which can be achieved by rotating the nut. The saw blade is pulled forward. When the clamping force of the clamping wheels is adjusted, the pulling force on the saw blade will also change accordingly. When the clamping force is stronger, the pulling force required will be greater. At this time, the tension distributed on the saw blade will also increase. By adjusting the clamping force of the clamping wheels, the tension of the saw blade during stretching is changed to achieve a better stress relief effect. Furthermore, a traction mechanism is set up, in which two traction components are linked by a belt drive structure. The two traction components alternately clamp the saw blade and drive the saw blade forward. The pulling process of the saw blade is continuous and uninterrupted, which is conducive to the rapid processing of the heat-treated saw blade, avoids the problem of stress concentration after the saw blade cools down and cannot be released, and improves processing efficiency. Furthermore, the clamping point of the traction mechanism on the saw blade continuously moves backward during the pulling process, and the clamping point of the clamping mechanism also continuously moves backward. The distance between the clamping point of the traction mechanism and the clamping point of the clamping mechanism remains approximately equal. The pulling force required during traction is fixed after adjusting the clamping force of the clamping wheel. This fixed and identical pulling force acts on each saw blade of equal length, causing the entire saw blade to be stretched in multiple segments. While eliminating stress, this also ensures that each position on the saw blade can be stretched to the same extent. Compared to the existing stretching method with a fixed traction clamping point, the product forming quality of this device is higher. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the present invention.

[0018] Figure 2 This is a schematic diagram showing the connection between the clamping mechanism and the worktable in this invention.

[0019] Figure 3 for Figure 2 Enlarged view of point A in the middle.

[0020] Figure 4 This is a structural separation diagram of the clamping mechanism in this invention.

[0021] Figure 5 This is a structural separation diagram of the traction mechanism and the worktable in this invention.

[0022] Figure 6 This is a schematic diagram of the traction mechanism in this invention.

[0023] Figure 7 This is a top view of the traction mechanism in this invention.

[0024] Figure 8 This is a structural separation diagram of the traction mechanism in this invention.

[0025] Figure 9 This is a first-view view of the separation of the first traction component structure in the traction mechanism.

[0026] Figure 10 This is a second-view diagram showing the separation of the first traction component in the traction mechanism.

[0027] Figure 11 This is a structural separation diagram of the second traction component in the traction mechanism.

[0028] Figure 12 This is a diagram showing the changing state of the clamping points on the saw blade in this invention.

[0029] Figure reference numerals: 1-Workbench, 2-Saw blade, 3-Clamping mechanism, 31-Cylinder, 32-Guide seat, 33-Limit block, 34-Rack, 35-Groove, 36-Screw, 37-Guide rod, 38-Slide table, 39-Clamping wheel, 310-Gear, 311-First spring, 312-Washer, 313-Nut, 4-Traction mechanism, 41-Guide rail, 42-Pulley, 43-Belt, 44-Rail, 45-First traction component, 451-Sliding cavity, 452-Limit cavity, 453-Sealing ring, 454-Second spring. 455-Sliding column, 456-Clamping head, 457-Pulling block, 458-Through hole, 459-Abutting column, 4510-Square hole, 46-Second traction component, 461-Mounting cavity, 462-Limiting cylinder, 463-Limiting hole, 464-Limiting pin, 465-Rotating column, 466-Guide groove, 467-Connecting rod, 47-Motor, 48-Second through groove, 49-First clamping block, 410-Second clamping block, 411-First slider, 412-Second slider, 5-Guide groove, 6-Mounting groove, 7-Guide roller, 8-Annular groove, 9-First through groove. Detailed Implementation

[0030] The following embodiments will describe the present invention in detail with reference to the accompanying drawings. In the drawings or description, similar or identical parts are referred to by the same reference numerals, and in practical applications, the shape, thickness, or height of each component may be enlarged or reduced. The embodiments listed in this invention are merely illustrative and not intended to limit the scope of the invention. Any obvious modifications or changes made to this invention do not depart from the spirit and scope of the invention.

[0031] Please see Figures 1-3 In this embodiment of the invention, a high-end powder steel saw blade heat treatment tension control device includes a workbench 1. A longitudinal guide groove 5 is provided on one side of the top of the workbench 1. A clamping mechanism 3 is provided in the guide groove 5. A through mounting groove 6 is provided on one side of the top of the workbench 1 corresponding to the guide groove 5. A traction mechanism 4 is provided in the mounting groove 6. A saw blade 2 is provided between the clamping mechanism 3 and the traction mechanism 4. The clamping mechanism 3 clamps the rear end of the saw blade 2, and the traction mechanism 4 clamps the front end of the saw blade 2 and pulls the saw blade 2 forward. Guide rollers 7 are provided on both sides of the top of the workbench 1 corresponding to the clamping mechanism 3. Both guide rollers 7 are rotatably connected to the workbench 1 through a bracket. An inwardly recessed annular groove 8 is provided on one side of the roller body of the two guide rollers 7 corresponding to the saw blade 2. The bottom of the saw blade 2 rests in the annular groove 8. The clamping mechanism 3 and the traction mechanism 4 work together to pull the saw blade 2 and distribute the tension evenly to the multiple stretched sections of the saw blade 2. While fully eliminating the stress generated by heat treatment, each section of the saw blade 2 can be stretched more precisely. The stretching amplitude between each section of the saw blade remains the same, so that the saw blade is not stretched too long and there is no phenomenon of insufficient stretching. The clamping mechanism 3 can also adjust the clamping force on the saw blade 2. By adjusting the clamping force on the saw blade 2, the pressure on the saw blade itself (i.e. the tension distributed on the surface of the saw blade) during pulling can be changed. The traction mechanism 4 can continuously switch the clamping point on the saw blade 2. At the same time, the traction mechanism 4 can continuously pull the saw blade 2. The entire traction process will not stop. It can quickly process the heat-treated saw blade and avoid the problem of stress concentration after the saw blade cools down and cannot be released. In this embodiment, as the saw blade 2 is continuously pulled forward, the clamping point of the traction mechanism 4 on the saw blade 2 will continuously move backward. The distance between the clamping point of the traction mechanism 4 on the saw blade 2 and the clamping point of the clamping mechanism 3 on the saw blade 2 is always approximately equal. This allows the traction force to be evenly distributed on each segment of the saw blade 2. The saw blade 2 is stretched in multiple segments, and each segment of the saw blade is subjected to the same tension. That is to say, the same tension will be generated on the surface of each segment of the saw blade. Under the same tension, each segment of the saw blade will be stretched to the same extent. While eliminating stress, it can also ultimately ensure that the complete saw blade can be stretched to the same extent at each position, resulting in higher quality after the product is formed.

[0032] Please see Figure 4 and Figure 5 The clamping mechanism 3 includes a cylinder 31 and two guide seats 32 arranged opposite to each other. The two guide seats 32 are slidably connected in the guide groove 5. The output end of the cylinder 31 is fixedly connected to one of the two guide seats 32. The cylinder 31 can drive the guide seat 32 to move in the guide groove 5. The bottom of the guide groove 5 is provided with a through first groove 9 on both sides. The bottom of the two guide seats 32 is fixed with a limit block 33. The two limit blocks 33 are slidably connected in the first groove 9 on the corresponding side, and the lower ends of the two limit blocks 33 extend to the bottom of the first groove 9. A gear 310 is rotatably connected to the middle position of one side of the two first through slots 9 at the bottom of the workbench 1. A rack 34 is fixed to the end of each of the two limit blocks 33 facing the gear 310. The two racks 34 are arranged symmetrically in opposite directions and are respectively meshed and connected to one side of the gear 310. When the cylinder 31 pushes one guide seat 32 to move, the rack 34 of this guide seat 32 will drive the gear 310 meshing with it to rotate. At this time, the rack 34 meshed and connected to the other side of the gear 310 will also move accordingly, thereby driving the other guide seat 32 to move synchronously. Finally, the two guide seats 32 can move inward or outward synchronously, and the two will move closer or further away from each other. The top of the guide seat 32 has a groove 35, in which two guide rods 37 are symmetrically fixed. A screw 36 is fixed between the two guide rods 37 in the groove 35. A slide table 38 is slidably connected to one end of the groove 35. The slide table 38 is slidably sleeved on the two guide rods 37. A through hole is opened on the inner wall of the slide table 38 on the side corresponding to the screw 36. One end of the screw 36 is inserted into the hole but does not contact the inner wall of the hole. A nut is threaded to one end of the screw 36. 313, a washer 312 is rotatably connected to the side of the nut 313 near the slide table 38. The washer 312 is movably sleeved on the screw 36. A first spring 311 is provided between the washer 312 and the slide table 38. The first spring 311 is sleeved on the screw 36. One end of the first spring 311 is connected and fixed to the washer 312 and the other end is connected and fixed to one side wall of the slide table 38. A clamping wheel 39 is rotatably connected above the slide table 38. The two clamping wheels 39 cooperate with each other to clamp the saw blade 2 in the middle. In this embodiment, the slide table 38 can be pressed against the side wall of the groove 35 by the elastic force of the first spring 311. The shim 312 can be moved by rotating the nut 313. The shim 312 can move closer to or away from the slide table 38. In order to move the shim more accurately and determine the distance of movement of the shim, a scale can be set on the side close to the shim. The distance of movement can be determined by observing the scale, and the compression of the spring can be determined accordingly. A scale is set on one side of the shim on both slide tables. The scale is used to keep the distance of movement of the two shims the same, so that the two clamping wheels exert the same pressure on the saw blade, and the clamping force is kept consistent in both the front and rear directions of the saw blade. During the stretching process, the saw blade will not shake or deviate to one side. When the shim 312 approaches the slide 38, the first spring 311 is compressed, and the elastic force increases. The resistance encountered by the slide 38 when it moves backward will increase, and vice versa. By changing the resistance when the slide 38 moves backward, the range of backward movement of the clamping rollers 39 can be adjusted. The smaller the range, the greater the clamping force of the two clamping rollers 39 on the saw blade 2. When the saw blade 2 moves, its front end is subjected to traction force, and its rear end is clamped by the two clamping rollers 39. When the clamping force generated by the two clamping rollers 39 is large, the traction force at the front end of the saw blade needs to be increased accordingly. As a result, the tension distributed on the surface of the saw blade 2 will also increase accordingly. By changing the surface tension of the saw blade, it can be stretched to different degrees, thereby better eliminating the stress generated during heat treatment.

[0033] Please see Figures 6-8The traction mechanism 4 includes a guide rail 41, which is embedded and fixed in the mounting groove 6. Both sides of the guide rail 41 are rotatably connected to pulleys 42 via brackets. A belt 43 is connected between the two pulleys 42. A track 44 is opened at the top of the guide rail 41. A first traction member 45 and a second traction member 46 are slidably connected to both sides of the track 44. A motor 47 is embedded and installed inside the guide rail 41 on the side corresponding to the second traction member 46. A first clamping block 49 is fixed below the first traction member 45 via a bracket. The first clamping block 49 is clamped and fixed on the lower side of the belt 43. A second clamping block 410 is fixed below the second traction member 46 via a bracket. The second clamping block 410 is clamped and fixed on the upper side of the belt 43. A second through slot 48 is provided on the inner wall of the bottom of the track 44. The bottom of the first traction member 45 and the second traction member 46 are respectively fixed with a first slider 411 and a second slider 412. The first slider 411 and the second slider 412 are slidably connected in the second through slot 48. The first traction member 45 and the second traction member 46 are both inverted L-shaped structures, with a clamping part at the upper end and a sliding part at the lower end. The sliding parts of the first traction member 45 and the second traction member 46 are slidably connected in the track 44. The clamping parts of the first traction member 45 and the second traction member 46 are slidably connected to the top of the guide rail 41. The clamping parts of the first traction member 45 and the second traction member 46 are both provided with clamping components. The sliding part of the second traction member 46 is provided with a driving component. In this embodiment, the first traction member 45 and the second traction member 46 are linked by a belt drive structure. The two traction members can alternately clamp the saw blade 2 and drive the saw blade forward. When the first traction member 45 moves forward, the second traction member 46 moves backward in sync. When the first traction member 45 moves backward, the second traction member 46 moves forward in sync. The two movements are synchronized and opposite. The purpose of this design is to continuously pull the saw blade 2. Both traction members can clamp the saw blade 2 and drive the saw blade 2 to move. When the first traction member 45 moves forward, it can clamp the saw blade and drive it forward. At this time, the second traction member 46 moves backward but does not clamp the saw blade 2, so it will not interfere with the movement of the saw blade. When the first traction member 45 moves backward, it will release the clamp on the saw blade. At this time, the second traction member 46 will move forward and clamp the saw blade at the same time, driving the saw blade forward synchronously. The two traction members cooperate with each other to continuously pull the saw blade, reduce processing time, quickly relieve stress on the saw blade, and prevent the problem of stress being difficult to remove due to excessive cooling. When there is only one traction component, although the traction component can also drive the saw blade forward, the traction component will release the saw blade when it moves backward, and the saw blade will remain stationary. During this process, there will be a movement interval of the saw blade. After the time accumulates, the degree of cooling of the saw blade will increase. The lower the temperature of the saw blade, the more difficult it is to remove the internal stress. Two traction components are set up to continuously pull the saw blade forward. In actual manufacturing, the maximum distance between the two traction components should be minimized as much as possible, and the minimum distance between the two traction components should be made zero as much as possible. The purpose of this design is to make the clamping point of the first traction component 45 when it drives the saw blade forward and the clamping point of the second traction component 46 when it drives the saw blade forward almost at the same position. The section of the saw blade between the clamping point of the traction component and the clamping point of the clamping mechanism 3 is the stretched section of the saw blade 2. By ensuring that the clamping point of the traction mechanism 4 on the saw blade is relatively stable, the length of each stretched section of the saw blade 2 can be kept almost consistent. After adjusting the clamping force of the clamping mechanism 3, the tension on the saw blade 2 when it is stretched is consistent. At this time, the same tension is evenly applied to each stretched section of the same length, and the tension on the surface of the saw blade will be consistent. Under the same tension, each section of the saw blade will be stretched at the same amplitude, resulting in a better stretching effect and more uniform force on each position on the saw blade, without problems such as stretching, incomplete stretching, or uneven stretching.

[0034] Please see Figures 9-10 The clamping assembly includes a sliding column 455 and a clamp 456 fixed to one end of the sliding column 455. The clamp 456 is arranged on the side close to the clamping mechanism 3. The clamping part of the first traction member 45 and the clamping part of the second traction member 46 are respectively provided with a sliding cavity 451 and a limiting cavity 452 on the side corresponding to the sliding column 455 and the side corresponding to the clamp 456. The sliding cavity 451 is a cylindrical cavity, and the limiting cavity 452 is an arc-shaped cavity with its inner wall expanding and tilting from the outside to the inside. The sliding column 455 is movably disposed in the sliding cavity 451 with a gap between the sliding column 455 and the inner wall of the sliding cavity 451. The clamp 456 is slidably inserted into the limiting cavity 452. A sealing ring 453 is fixed at the port of the sliding cavity 451. One end of the sliding column 455 slides through the sealing ring 453. A lever 457 is fixed at the top of the clamp 456. Openings are provided on the top inner walls of the clamping parts of the first traction member 45 and the second traction member 46. One end of the lever 457 is slidably connected in the opening and the top of the lever 457 extends to the outside of the opening. By moving the lever 457, the clamp 456 can be moved to one side and the sliding column 455 can be moved in the cavity. At this time, one end of the sliding column 455 can pass through the sealing ring 453. A second spring 454 is sleeved on the outside of the sliding column 455. The second spring 454 is located in the gap between the sliding column 455 and the sliding cavity 451. One end of the second spring 454 is fixedly connected to one side wall of the chuck 456 and the other end is fixedly connected to one side wall of the sealing ring 453. When the chuck 456 moves inward, the second spring 454 will be compressed. When the chuck 456 is not under force, the elastic force of the second spring 454 will push it against the limiting cavity 452. The inner walls of the chuck 456 and the sliding column 455 are provided with square holes 4510 through both ends along their respective central axes. The two square holes 4510 are interconnected and a saw blade 2 is inserted through them. Through holes 458 are provided on both inner walls of the front end of the collet 456. The through holes 458 are connected to the square holes 4510. Abutment pins 459 are slidably inserted into each of the two through holes 458. The two abutment pins 459 are arranged opposite each other and are located on the front and rear sides of the saw blade 2 respectively. The end of the abutment pin 459 facing the saw blade 2 is provided with an anti-slip structure. The ends of the two abutment pins 459 facing the saw blade 2 are ground into inclined ends, which are adapted to the arc surface of the inner wall of the limiting cavity 452. In this embodiment, when the chuck 456 moves outward, under the pressure of the arc-shaped inner wall of the limiting cavity 452, the abutment post 459 will move towards the through hole 458 and extend into the square hole 4510, so that the two abutment posts 459 can abut against the saw blade 2 from the front and rear sides. When the chuck 456 moves inward, the arc-shaped inner wall of the limiting cavity 452 will no longer press against the abutment post 459, and the abutment post 459 will also release its grip on the saw blade.

[0035] Please see Figure 11 The drive assembly includes a limiting cylinder 462. The sliding part of the second traction member 46 has an installation cavity 461. The limiting cylinder 462 is fixed in the installation cavity 461. A rotating column 465 is movably arranged inside the limiting cylinder 462. A continuous tortuous guide groove 466 is formed around the surface of the rotating column 465. A through limiting hole 463 is formed on the inner wall of both sides of the guide groove 466 at one end of the limiting cylinder 462. A limiting pin 464 is movably connected in both limiting holes 463. One end of both limiting pins 464 is inserted into the guide groove 466 and is slidably connected to the inner wall of the guide groove 466. A connecting rod 467 is fixed to one end of the rotating column 465. One end of the connecting rod 467 is fixedly connected to one end of the output shaft of the motor 47. In this embodiment, the rotating column 465 is driven to rotate by the cooperation of the motor 47 and the connecting rod 467. One end of the limiting pin 464 is slidably connected in the guide groove 466. As the rotating column 465 rotates, the contact point between the guide groove 466 and the limiting pin 464 changes continuously. At this time, the limiting pin 464 moves back and forth under the action of the guide groove 466, thereby driving the limiting cylinder 462 to move back and forth outside the rotating column 465. The limiting cylinder 462 is fixed on the second traction member 46, thereby driving the second traction member 46 to move back and forth in the track 44.

[0036] Working principle: The heat-treated saw blade 2 is clamped onto this device. The guide seat 32 is moved by the cylinder 31, so that the two guide seats 32 move towards one side of the saw blade 2 at the same time, so that the rear end of the saw blade 2 is clamped by the two clamping wheels 39 in the clamping mechanism 3. Then, the lever 457 is moved to push the sliding column 455 out of the sealing ring 453. At this time, the front end of the saw blade 2 is passed through the square hole 4510. After passing through, the lever 457 is released. Under the action of the second spring 454, the two abutting columns 459 clamp the saw blade 2 from the front and rear sides. The front end of the saw blade 2 is fixed in the traction mechanism 4. After both ends of the saw blade are fixed, the bottom of the end near the clamping mechanism 3 rests on the two guide rollers 7. After the saw blade 2 is clamped, if it is necessary to adjust the clamping force of the clamping mechanism 3 on the saw blade 2, it can be achieved by rotating the nut 313. The first spring 311 will be continuously compressed as the nut moves forward. The greater the compression of the first spring 311, the greater the clamping force on the saw blade 2. Correspondingly, the surface tension of the saw blade will also increase when it is stretched. After adjusting to the appropriate clamping force, start the motor 47. The motor 47 drives the rotating column 465 to rotate. The guide groove 466 on the surface of the rotating column 465 and the limit pin 464 cooperate with each other to drive the limit cylinder 462 and the second traction member 46 to move back and forth in the track 44. When the second traction member 46 moves forward, the first traction member 45 will move backward synchronously under the action of the belt drive structure. When the second traction member 46 moves forward, the friction between the saw blade 2 and the abutment post 459 is directed backward, which will drive the chuck 456 to move outward in the limiting cavity 452. When it moves outward, the arc-shaped inner wall of the limiting cavity 452 continuously squeezes the abutment post 459, so that the two abutment posts 459 are always pressed against the front and rear sides of the saw blade 2. At this time, as the second traction member 46 moves forward, it will drive the saw blade 2 to move forward synchronously, realizing the first traction of the saw blade 2. When the second traction member 46 moves backward, the abutment post 459 inside it no longer presses against the saw blade 2. At this time, it will release the clamping of the saw blade 2. The second traction member 46 moves towards the clamping mechanism 3 to its initial position, while the first traction member 45 moves forward. Similarly, it will clamp the saw blade 2 and drive the saw blade 2 to move forward synchronously, realizing the second traction of the saw blade 2. The two tractions constitute a stretching process. In this device, the minimum distance between the two traction components is zero and the maximum distance is adjustable. This can be achieved by controlling the guide length of the guide groove 466. During manufacturing, the maximum distance between the two traction components is minimized as much as possible. This ensures that during two traction processes, the clamping point of the traction mechanism 4 on the saw blade 2 is almost at the same position. Each time the traction mechanism 4 clamps and pulls the saw blade 2, its clamping point on the saw blade 2 will continuously move backward. Please see Figure 12 Point A1 is the clamping point of the saw blade 2 by the traction mechanism 4 during the first stretching process, and point B1 is the clamping point of the saw blade 2 by the clamping mechanism 3 during the first stretching process. After the first stretching process is completed, the clamping point of the traction mechanism 4 on the saw blade 2 will move to point A2, and the clamping point of the clamping mechanism 3 on the saw blade 2 will move to point B2. The distance from A1 to B1 is equal to the distance from A2 to B2. In this way, the same length of saw blade can be stretched with the same tension in each stretching process, and the force on the saw blade 2 will be more uniform when it is stretched. In traditional stretching operations, the traction machine fixes one end of the saw blade 2 with a clamp. The clamping point of the traction machine on the saw blade is always A1. At the beginning of the stretching, the clamping point of the clamping mechanism 3 on the saw blade 2 is B1. As the traction machine runs, the clamping point of the clamping mechanism 3 on the saw blade 2 will move from B1 to B2. At this time, the length of the saw blade being stretched changes from A1 to B1 to A1 to B2. The stretched section of the saw blade becomes longer and the entire stretched section will be subjected to tension. The part that has been stretched once will be stretched again, which will cause the problem of excessive stretching and poor product forming quality. However, the traction mechanism 4 of this device can ensure that every position of the saw blade 2 can be subjected to uniform tension, and the quality of the saw blade 2 after forming is higher.

[0037] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0038] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A high-end powder steel saw blade heat treatment tension control device, comprising a worktable (1), characterized in that, A longitudinal guide groove (5) is provided on one side of the top of the workbench (1). A clamping mechanism (3) is provided in the guide groove (5). A through mounting groove (6) is provided on one side of the top of the workbench (1) corresponding to the guide groove (5). A traction mechanism (4) is provided in the mounting groove (6). A saw blade (2) is provided between the clamping mechanism (3) and the traction mechanism (4). The clamping mechanism (3) clamps the rear end of the saw blade (2) and can adjust the clamping force on the saw blade (2). The traction mechanism (4) clamps the front end of the saw blade (2) and continuously pulls the saw blade (2) forward. The clamping mechanism (3) and the traction mechanism (4) cooperate to pull the saw blade (2) and distribute the pulling force evenly to multiple stretched sections of the saw blade (2). The traction mechanism (4) continuously switches the clamping point of the saw blade (2) backward during the process of pulling the saw blade (2).

2. The high-end powder steel saw blade heat treatment tension control device according to claim 1, characterized in that, The clamping mechanism (3) includes a cylinder (31) and two guide seats (32) arranged opposite to each other. The two guide seats (32) are slidably connected in the guide groove (5). The output end of the cylinder (31) is fixedly connected to one of the two guide seats (32). The top of the two guide seats (32) is provided with a groove (35). One end of the two grooves (35) is slidably connected to a slide (38). The top of the two slides (38) is rotatably connected to a clamping wheel (39). The two clamping wheels (39) cooperate with each other to clamp the saw blade (2) in the middle.

3. The high-end powder steel saw blade heat treatment tension control device according to claim 2, characterized in that, The guide groove (5) has a through first through groove (9) on both sides of the bottom. The bottom of the two guide seats (32) is fixed with a limit block (33). The two limit blocks (33) are slidably connected in the first through groove (9) on the corresponding side. The lower ends of the two limit blocks (33) extend to the bottom of the first through groove (9). The bottom of the worktable (1) is rotatably connected with a gear (310) at the middle position on one side of the two first through grooves (9). The ends of the two limit blocks (33) facing the gear (310) are fixed with racks (34). The two racks (34) are arranged symmetrically in opposite directions and are respectively meshed and connected to one side of the gear (310).

4. The high-end powder steel saw blade heat treatment tension control device according to claim 3, characterized in that, Two guide rods (37) are symmetrically fixed in the groove (35). A screw (36) is fixed in the groove (35) between the two guide rods (37). The slide (38) is slidably sleeved on the two guide rods (37). The inner wall of the slide (38) has a through hole on one side corresponding to the screw (36). One end of the screw (36) is inserted into the hole and does not contact the inner wall of the hole. A nut (36) is threaded to one end of the screw (36). 13) A washer (312) is rotatably connected to the side of the nut (313) near the slide (38). The washer (312) is movably sleeved on the screw (36). A first spring (311) is provided between the washer (312) and the slide (38). The first spring (311) is sleeved on the screw (36). One end of the first spring (311) is connected and fixed to the washer (312) and the other end is connected and fixed to one side wall of the slide (38).

5. The high-end powder steel saw blade heat treatment tension control device according to claim 1, characterized in that, The traction mechanism (4) includes a guide rail (41), which is embedded and fixed in the mounting groove (6). A track (44) is provided on the top of the guide rail (41). A first traction member (45) and a second traction member (46) are slidably connected to both sides of the track (44). A motor (47) is embedded and installed inside the guide rail (41) on one side corresponding to the second traction member (46). Both the first traction member (45) and the second traction member (46) are inverted U-shaped structures, and their upper ends are both The first traction member (45) and the second traction member (46) are slidably connected in the rail (44). The clamping part of the first traction member (45) and the clamping part of the second traction member (46) are slidably connected to the top of the guide rail (41). The clamping part of the first traction member (45) and the clamping part of the second traction member (46) are both provided with clamping components. The sliding part of the second traction member (46) is provided with a driving component.

6. The high-end powder steel saw blade heat treatment tension control device according to claim 5, characterized in that, Both sides of the guide rail (41) are rotatably connected to pulleys (42) via brackets. A belt (43) is connected between the two pulleys (42). A first clamping block (49) is fixed below the first traction member (45) via a bracket. The first clamping block (49) is clamped and fixed on the lower side of the belt (43). A second clamping block (410) is fixed below the second traction member (46) via a bracket. The second clamping block (410) is clamped and fixed on the upper side of the belt (43). A through second groove (48) is opened on the inner wall of the bottom of the track (44). A first slider (411) and a second slider (412) are fixed at the bottom of the first traction member (45) and the second traction member (46), respectively. The first slider (411) and the second slider (412) are slidably connected in the second groove (48).

7. The high-end powder steel saw blade heat treatment tension control device according to claim 5, characterized in that, The clamping assembly includes a sliding column (455) and a clamp (456) fixed to one end of the sliding column (455). The clamping parts of the first traction member (45) and the second traction member (46) are provided with a sliding cavity (451) and a limiting cavity (452). The sliding cavity (451) is a cylindrical cavity, and the limiting cavity (452) is an arc-shaped cavity with its inner wall expanding and tilting from the outside to the inside. The sliding column (455) is movably disposed in the sliding cavity (451), and the clamp (456) is slidably inserted into the limiting cavity (452). A sealing ring (453) is fixed at the port of the sliding cavity (451), and one end of the sliding column (455) slides through the sealing ring (453). The inner walls of the chuck (456) and the slide (455) are provided with square holes (4510) that pass through both ends along their respective central axes. The two square holes (4510) are interconnected and the saw blade (2) is inserted through them. The inner walls on both sides of the front end of the chuck (456) are provided with through holes (458). The through holes (458) are connected to the square holes (4510). The two through holes (458) are slidably inserted with abutment pins (459). The two abutment pins (459) are arranged opposite each other and are located on the front and rear sides of the saw blade (2). The ends of the two abutment pins (459) facing the saw blade (2) are ground into inclined ends. The inclined ends are adapted to the arc surface of the inner wall of the limiting cavity (452).

8. The high-end powder steel saw blade heat treatment tension control device according to claim 7, characterized in that, The top of the chuck (456) is fixed with a lever (457). The clamping part of the first traction member (45) and the clamping part of the second traction member (46) are both provided with openings on the top inner walls. One end of the lever (457) is slidably connected in the opening and the top end of the lever (457) extends to the outside of the opening. A second spring (454) is sleeved on the outside of the slide column (455). One end of the second spring (454) is fixedly connected to one side wall of the chuck (456) and the other end is fixedly connected to one side wall of the sealing ring (453).

9. The high-end powder steel saw blade heat treatment tension control device according to claim 5, characterized in that, The driving assembly includes a limiting cylinder (462). A mounting cavity (461) is provided within the sliding portion of the second traction member (46). The limiting cylinder (462) is fixed within the mounting cavity (461). A rotating column (465) is movably disposed within the limiting cylinder (462). A continuously tortuous guide groove (466) is provided around the surface of the rotating column (465). On the inner walls of both sides of the limiting cylinder (462) corresponding to the guide groove (466), there are openings... There is a through-hole (463), and a limit pin (464) is movably connected in both of the two limit holes (463). One end of each of the two limit pins (464) is inserted into the guide groove (466), and one end of each of the two limit pins (464) is slidably connected to the inner wall of the guide groove (466). One end of the rotating column (465) is fixed with a connecting rod (467), and one end of the connecting rod (467) is fixedly connected to one end of the output shaft of the motor (47).

10. The high-end powder steel saw blade heat treatment tension control device according to claim 1, characterized in that, The top of the workbench (1) is provided with guide rollers (7) on both sides corresponding to the clamping mechanism (3). Both guide rollers (7) are rotatably connected to the workbench (1) through a bracket. Both guide rollers (7) have an inwardly recessed annular groove (8) on one side of the roller body corresponding to the saw blade (2). The bottom of the saw blade (2) rests in the annular groove (8).

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