Surface polishing wire drawing apparatus

Abstract

The application discloses a surface polishing wire drawing processing equipment and belongs to the technical field of lock processing. The processing equipment comprises an operation table, two sets of clamping mechanisms, an intermediate conveying mechanism, a polishing wire drawing mechanism and a feeding mechanism. The intermediate conveying mechanism is arranged between the clamping mechanisms and the polishing wire drawing mechanism. The intermediate conveying mechanism is arranged at the bottom of the clamping mechanism. The clamping mechanism is used for clamping the parts conveyed by the feeding mechanism and realizing part overturning, up-down movement and left-right movement. The intermediate conveying mechanism is used for conveying and turning the parts. The application has the advantages that the two sets of clamping mechanisms, the polishing wire drawing mechanism and the intermediate conveying mechanism are arranged, so that the device can realize automatic processing of six surfaces of the lock, manual participation is not needed, the smoothness of mechanical processing is improved, and the processing efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of lock processing technology, specifically to a polishing and wire drawing device. Background Technology

[0002] Polishing and brushing the surface of locks is an essential step in the lock manufacturing process. Currently, the surface processing of locks typically involves mechanical equipment clamping the two sides of the lock and working in conjunction with a polishing and brushing mechanism to process the remaining sides. After completion, the lock position is manually adjusted so that the equipment can re-clamp the polished sides and process the remaining sides. This processing method requires manual operation and cannot achieve fully automated mechanical production, resulting in low processing efficiency and affecting the overall manufacturing efficiency. It cannot meet the needs of enterprise development. In some cases, the polishing is entirely done manually, which, in addition to low production efficiency, also poses significant safety hazards. Therefore, improvements are needed. Summary of the Invention

[0003] The technical problem to be solved by the present invention is that existing equipment is not fully automated, has low processing efficiency, and poses safety hazards. The present invention provides a surface polishing and wire drawing processing equipment with a high degree of automation and high production efficiency.

[0004] A surface polishing and wire drawing processing device includes an operating table. The operating table is equipped with two sets of clamping mechanisms, an intermediate conveying mechanism, a polishing and wire drawing mechanism, and a feeding mechanism. The intermediate conveying mechanism is located between the clamping mechanisms and the polishing and wire drawing mechanism, and is located at the bottom of the clamping mechanisms. The clamping mechanisms are used to clamp the parts conveyed by the feeding mechanism and realize the parts' flipping, vertical movement, and horizontal movement. The intermediate conveying mechanism conveys and turns the parts. The polishing and wire drawing mechanism is equipped with a polishing belt angle adjustment mechanism. The polishing and wire drawing mechanism cooperates with the clamping mechanisms for polishing and wire drawing the surface of the parts. The operating table is provided with slots.

[0005] As an improvement, each of the two clamping mechanisms includes a U-shaped fixed seat mounted on the operating table. A first motor is provided at one end of the U-shaped fixed seat. A first track is provided on the U-shaped fixed seat. A mounting plate is slidably mounted on the first track and is driven by the first motor through a lead screw. An L-shaped mounting plate is provided on the mounting plate. A second motor is provided at the top of the L-shaped mounting plate. A second track is provided on the side wall of the L-shaped mounting plate. A first mounting frame is provided on the second track and is driven by the second motor through a lead screw. A flip-clamping unit is provided on the first mounting frame. A through groove that cooperates with the feeding mechanism is provided on the L-shaped mounting plate. A support plate is provided opposite to the flip-clamping unit on the side of the mounting plate away from the L-shaped mounting plate.

[0006] As an improvement, the flipping clamping unit includes a first rotating shaft rotatably mounted on a first mounting frame. Two flipping gears are connected to the two ends of the first rotating shaft. A third motor is mounted on the first mounting frame, and the output shaft of the third motor is connected to a flipping gear. A clamping block is rotatably mounted on the first mounting frame below the first rotating shaft. A driven gear is mounted on the rotating shaft of the clamping block. A transmission belt is fitted onto the flipping gear and the driven gear on the same side. A cylinder is mounted on the first mounting frame. A telescopic rod is connected to the end of the output shaft of the cylinder. A telescopic rod sleeve is slidably mounted on the outer wall of the telescopic rod. The driven gear is fitted onto the outer wall of the telescopic rod sleeve and is interference-fitted with the telescopic rod sleeve. A movable clamping block is located at the end of the telescopic rod. A cavity is provided in the movable clamping block, and a telescopic spring is located in the cavity. A push rod is slidably mounted in the movable clamping block, and the push rod is located in the cavity and pushed by the telescopic spring.

[0007] As an improvement, the intermediate conveying mechanism includes a fixed plate mounted on an operating table. The fixed plate has two support plates, namely, Support Plate 1 and Support Plate 2, arranged at opposite angles. A conveying frame is mounted at the top of Support Plate 1 and Support Plate 2. A receiving plate is mounted on one side of the conveying frame. A cylinder is mounted at the bottom of the conveying frame, away from Support Plate 2. A top plate is mounted at the end of the telescopic rod of Cylinder 1. A top rod is mounted on the top plate, extending into the groove between the receiving plate and the conveying frame. The fixed plate... A lifting frame is provided on the side near the conveyor frame, and the lifting frame has a lifting groove. A fan-shaped guide block is provided on the top of the support plate two on the side near the lifting frame, and the included angle of the fan-shaped guide block is 90°~180°. A cylinder two is provided on the side wall of the support plate two near the support plate one. The telescopic rod of the cylinder two passes through the support plate two and is used to push the parts into the lifting groove. A cylinder three is provided at the bottom end of the fixed plate below the lifting frame. The telescopic rod of the cylinder three passes through the fixed plate and extends into the lifting groove and is connected to a push plate.

[0008] As an improvement, the feeding mechanism includes a second mounting frame mounted on the operating table and above the mounting plate. The second mounting frame is double-layered. The lower top surface of the second mounting frame is provided with a slide seat, and a guide rod is provided on the slide seat. A conveying unit is slidably mounted on the guide rod. The slide seat is provided with a transmission unit for driving the conveying unit to move. The upper top of the second mounting frame is provided with a fixed seat, and a cylinder is provided on the fixed seat. A feeding trough is provided in front of the end of the telescopic rod of the cylinder away from the fixed seat on the second mounting frame. The side wall of the feeding trough is provided with a through hole that cooperates with the telescopic rod of the cylinder.

[0009] As an improvement, the conveying unit includes a slider, in which two mirror-shaped connecting rods are provided through the upper part. The two connecting rods are connected to a T-shaped clamping block at the end away from the feed chute. The top of the slider is provided with a clamping block that cooperates with the T-shaped clamping block on the side near the T-shaped clamping block. The two connecting rods are provided with a limiting plate at the end away from the T-shaped clamping block. A spring is sleeved on the connecting rod between the limiting plate and the slider.

[0010] As an improvement, the transmission unit can be driven by either a motor or a cylinder:

[0011] The motor drive includes a transmission motor mounted on the side of the second mounting bracket. The output shaft of the transmission motor is connected to a transmission gear 1 located in the middle of the guide rod. The slide block has a U-shaped fixed seat 1 at its top on the side away from the second mounting bracket. A transmission gear 2 is rotatably mounted in the U-shaped fixed seat 1. A transmission belt is fitted on the transmission gear 1 and the transmission gear 2. The upper side of the transmission belt passes through the slider and is fixedly mounted to the slider.

[0012] The cylinder drive includes a transmission cylinder located on the outer side of one end of the slide near the second mounting bracket, and the extension rod of the transmission cylinder passes through the side wall of the slide and is connected to the slider.

[0013] As an improvement, the polishing and wire drawing mechanism includes a third mounting bracket mounted on the operating table and erected above the slot. A bidirectional motor is installed in the slot on the third mounting bracket, and drive wheels are connected to the drive shafts of the bidirectional motors. A middle support is located at the top of the third mounting bracket, and a fourth mounting bracket is located at the top of the middle support. Connecting plates are respectively installed on the two side walls of the middle support near the top. Connecting sleeves are provided at the ends of the two connecting plates away from the middle support. An adjusting rod passes through the connecting sleeve, and a U-shaped seat is located at the top of the adjusting rod. A tension spring is fitted on the adjusting rod between the connecting sleeve and the U-shaped seat. A driven wheel rotatably mounts on the U-shaped seat. Rotary motors are respectively installed on both sides of the fourth mounting bracket. An eccentric connecting block is connected to the drive shaft of the rotary motor through the fourth mounting bracket. A connecting rod is provided on the eccentric connecting block, and an adjusting plate is connected to the other end of the connecting rod. The adjusting plate is connected to the bottom end of the U-shaped seat. Grinding belt angle adjustment mechanisms are provided on both sides of the middle support, and grinding belts are fitted onto the drive wheels, driven wheels, and grinding belt angle adjustment mechanisms.

[0014] As an improvement, the grinding belt angle adjustment mechanism includes two structural forms: Form 1 and Form 2.

[0015] Form 1 includes an L-shaped connecting plate fixedly connected to an intermediate support. The L-shaped connecting plate has an adjustment plate 1 on the side away from the intermediate support. The upper and lower ends of the adjustment plate 1 are respectively provided with adjustment plates 2. Adjustment rods are respectively passed through the two adjustment plates 2 on both sides. The ends of the four adjustment rods are respectively connected to adjustment plates 3. A guide rod is slidably provided between the adjustment rods in the adjustment plates 2. The guide rod is connected to the adjustment plates 3. A spring 2 is sleeved on the guide rod on the side of the adjustment plates 3 near the adjustment plate 2. A ring frame 1 is rotatably provided between the adjustment plates 3. An adjustment wheel is rotatably provided in the ring frame 1. The bottom end of the adjustment plate 3 is provided with an L-shaped fixing strip on the side of the adjustment plate 2. The L-shaped fixing strip is provided with a threaded adjustment screw, and there is a gap between the end of the adjustment screw and the side of the ring frame 1.

[0016] Form 2 includes an L-shaped connecting plate. The L-shaped connecting plate has a U-shaped frame 2 on the side away from the intermediate support. An adjusting rod 1 is respectively installed on the side wall of the U-shaped frame 2 away from the L-shaped connecting plate and at its upper and lower ends. An adjusting block is respectively installed at the end of the two adjusting rods 1 on the side away from the U-shaped frame 2. An H-shaped adjusting plate is rotatably installed on the side wall of the two adjusting blocks. A spring 2 is sleeved on the adjusting rod 1 between the adjusting block and the side wall of the U-shaped frame 2. A drag-reducing mechanism is provided on the side wall of the H-shaped adjusting plate. The drag-reducing mechanism is graphite cloth or graphite strip.

[0017] The advantages of this invention compared to the prior art are:

[0018] ① By setting up two sets of clamping mechanisms and their corresponding polishing and wire drawing mechanisms and intermediate conveying mechanisms, the present invention enables the device to automatically process the six sides of the lock without human intervention, thereby improving the smoothness of mechanical processing and increasing processing efficiency.

[0019] ②The device of the present invention has a compact structure and stable connection. It is assembled and manufactured using common components, so the cost is controllable and it is easy to promote.

[0020] ③ The device of the present invention does not require manual operation, which greatly reduces the possibility of safety accidents and ensures personnel safety;

[0021] ④ The device of the present invention is easy to maintain and has low maintenance costs.

[0022] The above overview is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features of the invention will become readily apparent from the accompanying drawings and the following detailed description. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the structure of the present invention. Figure 1 .

[0025] Figure 2 This is a schematic diagram of the structure of the present invention. Figure 2 .

[0026] Figure 3 This is an enlarged structural schematic diagram of invention A.

[0027] Figure 4 This is a schematic diagram of the clamping mechanism of the present invention.

[0028] Figure 5 This is a schematic diagram of the structure of the flip-clamping unit of the present invention.

[0029] Figure 6 This is a front view of the flip-clamping unit of the present invention.

[0030] Figure 7 This is a cross-sectional view of the flip clamping unit AA of the present invention.

[0031] Figure 8 This is a schematic diagram of the feeding mechanism in Embodiment 1 of the present invention.

[0032] Figure 9 This is a schematic diagram of the feeding mechanism in Embodiment 2 of the present invention. Figure 1 .

[0033] Figure 10 This is a schematic diagram of the feeding mechanism in Embodiment 2 of the present invention. Figure 2 .

[0034] Figure 11 This is a schematic diagram of the intermediate conveying mechanism of the present invention.

[0035] Figure 12 This is a top view of the intermediate conveying mechanism of the present invention.

[0036] Figure 13 This is a schematic diagram of the polishing and wire drawing mechanism of the present invention. Figure 1 .

[0037] Figure 14 This is a schematic diagram of the polishing and wire drawing mechanism of the present invention. Figure 2 .

[0038] Figure 15 This is a schematic diagram of the first type of grinding belt angle adjustment mechanism of the present invention.

[0039] Figure 16 This is a front view of the first type of grinding belt angle adjustment mechanism of the present invention.

[0040] Figure 17 This is a cross-sectional view of form AA of the grinding belt angle adjustment mechanism of the present invention.

[0041] Figure 18 This is a schematic diagram of the second type of grinding belt angle adjustment mechanism of the present invention.

[0042] As shown in the figure: 1. Operating table; 11. Slot; 2. Polishing and wire drawing mechanism; 21. Third mounting bracket; 22. Bidirectional motor; 23. Drive wheel; 24. Intermediate support; 25. Grinding belt; 26. Driven wheel; 27. Adjusting wheel; 28. Connecting plate; 29. ​​Connecting sleeve; 210. Fourth mounting bracket; 211. Tension spring; 212. Adjusting rod; 213. Adjusting plate; 214. Connecting rod; 215. Eccentric connecting block; 216. Rotary motor; 217. U-shaped seat; 3. Clamping mechanism; 31. U-shaped fixed seat; 32. First motor; 33. 34. Track 1; 35. L-shaped mounting plate; 36. Support plate; 37. Driven gear; 38. Second motor; 39. Track 2; 30. Mounting plate; 310. First mounting bracket; 311. Cylinder; 312. Third motor; 313. First rotating shaft; 314. Reversing gear; 315. Transmission belt; 316. Clamping block; 317. Through slot; 318. Telescopic rod; 319. Telescopic rod sleeve; 320. Moving clamping block; 321. Cavity; 322. Telescopic spring; 323. Top rod; 4. Intermediate transmission mechanism; 41. Fixed plate; 42. Receiving plate ; 43. Cylinder 1; 44. Top plate; 45. Top rod 1; 46. Conveyor frame; 47. Cylinder 2; 48. Cylinder 3; 49. Lifting frame; 410. Push plate; 411. Lifting groove; 412. Fan-shaped guide block; 413. Support plate 2; 414. Support plate 1; 5. Feeding mechanism; 51. Second mounting frame; 52. Cylinder 4; 53. Transmission cylinder; 54. Discharge groove; 55. Fixed seat; 56. Slide seat; 57. Guide rod; 58. Slider; 59. T-shaped clamp; 510. Limiting plate; 511. Spring 1; 512. Connecting rod; 51 3. Drive motor; 514. Drive belt; 515. U-shaped fixing seat one; 516. Drive gear two; 517. Through hole; 518. Drive gear one; 6. Grinding belt angle adjustment mechanism; 61. L-shaped connecting plate; 62. Adjusting plate two; 63. Adjusting rod; 64. Spring two; 65. Adjusting plate three; 66. Reverse frame one; 67. Adjusting screw; 68. Reverse frame two; 69. Adjusting rod one; 610. H-shaped adjusting plate; 611. Adjusting block; 612. Drag reduction mechanism; 613. Adjusting plate one; 614. L-shaped fixing strip; 615. Guide rod. Detailed Implementation

[0043] The embodiments of this application are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0044] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0045] The present invention will now be described in further detail with reference to the accompanying drawings.

[0046] Combined with appendix Figures 1-18 A surface polishing and wire drawing processing device is disclosed. The processing device includes an operating table 1. The operating table 1 is provided with two sets of clamping mechanisms 3, an intermediate conveying mechanism 4, a polishing and wire drawing mechanism 2, and a feeding mechanism 5. The intermediate conveying mechanism 4 is located between the clamping mechanism 3 and the polishing and wire drawing mechanism 2. The intermediate conveying mechanism 4 is located at the bottom of the clamping mechanism 3. The clamping mechanism 3 is used to clamp the parts conveyed by the feeding mechanism 5 and realize the parts to flip, move up and down, and move left and right. The intermediate conveying mechanism 4 enables the parts to be conveyed and rotated. The polishing and wire drawing mechanism 2 is provided with a polishing belt angle adjustment mechanism 6. The polishing and wire drawing mechanism 2 cooperates with the clamping mechanism 3 for polishing and wire drawing of the surface of the parts. The operating table 1 is provided with slots 11.

[0047] The two sets of clamping mechanisms 3 each include a U-shaped fixed seat 31 mounted on the operating table 1. A first motor 32 is provided at one end of the U-shaped fixed seat 31. A first track 33 is provided on the U-shaped fixed seat 31. A mounting plate 39 is slidably mounted on the first track 33 and is driven by the first motor 32 through a lead screw. An L-shaped mounting plate 34 is provided on the mounting plate 39. A second motor 37 is provided at the top of the L-shaped mounting plate 34. A second track 38 is provided on the side wall of the L-shaped mounting plate 34. A first mounting frame 310 is provided on the second track 38 and is driven by the second motor 37 through a lead screw. A flip clamping unit is provided on the first mounting frame 310. A through groove 317 that cooperates with the feeding mechanism 5 is provided on the L-shaped mounting plate 34 away from the flip clamping unit. A support plate 35 is provided on the mounting plate 39 opposite to the side of the L-shaped mounting plate 34 away from the flip clamping unit.

[0048] The flipping clamping unit includes a first rotating shaft 313 rotatably mounted on a first mounting frame 310. Two flipping gears 314 are connected to the two ends of the first rotating shaft 313. A third motor 312 is mounted on the first mounting frame 310, and the output shaft of the third motor 312 is connected to one of the flipping gears 314. A clamping block 316 is rotatably mounted on the first mounting frame 310 below the first rotating shaft 313. A driven gear 36 is mounted on the rotating shaft of the clamping block 316. A transmission belt 315 is respectively fitted onto the flipping gear 314 and the driven gear 36 on the same side. The first mounting frame 310... The device is equipped with a cylinder 311, and a telescopic rod 318 is connected to the output shaft end of the cylinder 311. A telescopic rod sleeve 319 is slidably provided on the outer wall of the telescopic rod 318. The driven gear 36 is sleeved on the outer wall of the telescopic rod sleeve 319 and is interference-fitted with the telescopic rod sleeve 319. A movable clamping block 320 is provided at the end of the telescopic rod 318. A cavity 321 is provided in the movable clamping block 320. A telescopic spring 322 is provided in the cavity 321. A push rod 323 is slidably provided in the movable clamping block 320. The push rod 323 is disposed in the cavity 321 and is pushed by the telescopic spring 322.

[0049] The intermediate conveying mechanism 4 includes a fixed plate 41 mounted on the operating table 1. The fixed plate 41 has two opposingly angled support plates 414 and 413. A conveying frame 46 is mounted at the top of the two support plates 414 and 413. A receiving plate 42 is mounted on one side of the conveying frame 46. A cylinder 43 is mounted at the bottom of the conveying frame 46, away from the support plate 413. A top plate 44 is mounted at the end of the telescopic rod of the cylinder 43. A top rod 45 extends from the top plate 44 into the groove between the receiving plate 42 and the conveying frame 46. The fixed plate 41 has a top rod 45 extending into the groove between the receiving plate 42 and the conveying frame 46. The fixed plate 41 has a top rod 45 extending into the groove between the receiving plate 42 and the conveying frame 46. A lifting frame 49 is provided on one side of 46. The lifting frame 49 has a lifting groove 411. A fan-shaped guide block 412 is provided on the top of the support plate 413 near the lifting frame 49, and the included angle of the fan-shaped guide block 412 is 90°~180°. A cylinder 47 is provided on the side wall of the support plate 413 near the support plate 414. The telescopic rod of the cylinder 47 passes through the support plate 413 and is used to push the part into the lifting groove 411. A cylinder 48 is provided at the bottom end of the fixed plate 41 below the lifting frame 49. The telescopic rod of the cylinder 48 passes through the fixed plate 41 and extends into the lifting groove 411 and is connected to a push plate 410.

[0050] The feeding mechanism 5 includes a second mounting frame 51 mounted on the operating table 1 and above the mounting plate 39. The second mounting frame 51 is double-layered. The lower top surface of the second mounting frame 51 is provided with a slide seat 56. The slide seat 56 is provided with a guide rod 57. A conveying unit is slidably mounted on the guide rod 57. The slide seat 56 is provided with a transmission unit for driving the conveying unit to move. The upper top of the second mounting frame 51 is provided with a fixed seat 55. The fixed seat 55 is provided with a cylinder 4 52. The second mounting frame 51 is provided with a feeding groove 54 in front of the end of the telescopic rod of the cylinder 4 52 away from the fixed seat 55. The side wall of the feeding groove 54 is provided with a through hole 517 that cooperates with the telescopic rod of the cylinder 4 52.

[0051] The conveying unit includes a slider 58, through which two mirror-shaped connecting rods 512 are provided at the upper part. The two connecting rods 512 are connected to a T-shaped clamping block 59 at the end away from the feed chute 54. The top of the slider 58 is provided with a clamping block that cooperates with the T-shaped clamping block 59 on the side near the T-shaped clamping block 59. The two connecting rods 512 are provided with a limiting plate 510 at the end away from the T-shaped clamping block 59. A spring 511 is sleeved on the connecting rod 512 between the limiting plate 510 and the slider 58.

[0052] The transmission unit can be driven by either a motor or a cylinder.

[0053] The motor drive includes a transmission motor 513 disposed on the side of the second mounting bracket 51. The output shaft of the transmission motor 513 is connected to a transmission gear 518 disposed in the middle of the guide rod 57. The slide block 56 has a U-shaped fixing seat 515 at its top end on the side away from the second mounting bracket 51. A transmission gear 516 is rotatably disposed in the U-shaped fixing seat 515. A transmission belt 514 is sleeved on the transmission gear 518 and the transmission gear 516. The upper side of the transmission belt 514 passes through the slider 58 and is fixedly disposed with the slider 58.

[0054] The cylinder drive includes a transmission cylinder 53 located on the outer side of one end of the slide block 56 near the second mounting bracket 51. The telescopic rod of the transmission cylinder 53 passes through the side wall of the slide block 56 and is connected to the slider 58.

[0055] The polishing and wire drawing mechanism 2 includes a third mounting bracket 21 mounted on the operating table 1 and erected above the slot 11. A bidirectional motor 22 is installed on the third mounting bracket 21 within the slot 11. Drive wheels 23 are connected to the drive shafts of the bidirectional motor 22. A middle support 24 is located at the top of the third mounting bracket 21. A fourth mounting bracket 210 is located at the top of the middle support 24. Connecting plates 28 are respectively installed on the two side walls of the middle support 24 near the top. Connecting sleeves 29 are provided at the ends of the two connecting plates 28 away from the middle support 24. An adjusting rod 212 passes through the connecting sleeve 29. A U-shaped seat 217 is located at the top of the adjusting rod 212. A tension spring 211 is fitted on the adjusting rod 212 between the connecting sleeve 29 and the U-shaped seat 217. A driven wheel 26 is rotatably mounted on the U-shaped seat 217. Rotary motors 216 are respectively mounted on both sides of the fourth mounting bracket 210. The drive shaft of the rotary motor 216 passes through the fourth mounting bracket 210 and is connected to an eccentric connecting block 215. A connecting rod 214 is mounted on the eccentric connecting block 215. An adjusting plate 213 is connected to the other end of the connecting rod 214. The adjusting plate 213 is connected to the bottom end of the U-shaped seat 217. A grinding belt angle adjustment mechanism 6 is set on both sides of the intermediate bracket 24. A grinding belt 25 is fitted on the driving wheel 23, the driven wheel 26 and the grinding belt angle adjustment mechanism 6.

[0056] The aforementioned grinding belt angle adjustment mechanism 6 includes two structural forms: Form 1 and Form 2.

[0057] Form 1 includes an L-shaped connecting plate 61 fixedly connected to the intermediate support 24. The L-shaped connecting plate 61 has an adjusting plate 613 on the side away from the intermediate support 24. Adjusting plates 62 are respectively provided at the upper and lower ends of the adjusting plate 613. Adjusting rods 63 are respectively inserted through both sides of the two adjusting plates 62. Adjusting plates 65 are respectively connected to the ends of the four adjusting rods 63. Guide rods 615 are slidably provided between the adjusting rods 63 in the adjusting plates 62. 5 is connected to the third adjustment plate 65. The guide rod 615 is fitted with a second spring 64 on the side of the third adjustment plate 65 near the second adjustment plate 62. A first ring frame 66 is rotatably provided between the third adjustment plates 65. An adjustment wheel 27 is rotatably provided in the first ring frame 66. An L-shaped fixing strip 614 is provided at the bottom end of the third adjustment plate 65 near the second adjustment plate 62. An adjustment screw 67 is threadedly connected on the L-shaped fixing strip 614, and a gap is left between the end of the adjustment screw 67 and the side of the first ring frame 66.

[0058] Form 2 includes an L-shaped connecting plate 61. The L-shaped connecting plate 61 has a U-shaped frame 68 on the side away from the intermediate support 24. The U-shaped frame 68 has adjusting rods 69 extending through its upper and lower ends on the side wall away from the L-shaped connecting plate 61. The two adjusting rods 69 have adjusting blocks 611 at their ends away from the U-shaped frame 68. H-shaped adjusting plates 610 are rotatably mounted on the side walls of the two adjusting blocks 611. A spring 64 is sleeved on the adjusting rod 69 between the adjusting block 611 and the side wall of the U-shaped frame 68. The H-shaped adjusting plate 610 has a drag-reducing mechanism 612 on its side wall. The drag-reducing mechanism 612 is graphite cloth or graphite strip.

[0059] Example 1

[0060] Combined with appendix Figures 1-3 A surface polishing and wire drawing processing device is disclosed. The processing device includes an operating table 1. The operating table 1 is provided with two sets of clamping mechanisms 3, an intermediate conveying mechanism 4, a polishing and wire drawing mechanism 2, and a feeding mechanism 5. The intermediate conveying mechanism 4 is located between the clamping mechanism 3 and the polishing and wire drawing mechanism 2. The intermediate conveying mechanism 4 is located at the bottom of the clamping mechanism 3. The clamping mechanism 3 is used to clamp the parts conveyed by the feeding mechanism 5 and realize the parts to flip, move up and down, and move left and right. The intermediate conveying mechanism 4 enables the parts to be conveyed and rotated. The polishing and wire drawing mechanism 2 is provided with a polishing belt angle adjustment mechanism 6. The polishing and wire drawing mechanism 2 cooperates with the clamping mechanism 3 for polishing and wire drawing of the surface of the parts. The operating table 1 is provided with slots 11.

[0061] Combined with appendix Figures 4-7The two sets of clamping mechanisms 3 each include a U-shaped fixing seat 31 mounted on the operating table 1. A first motor 32 is provided at one end of the U-shaped fixing seat 31. A first track 33 is provided on the U-shaped fixing seat 31. A mounting plate 39 is slidably mounted on the first track 33 and is driven by the first motor 32 via a lead screw. An L-shaped mounting plate 34 is provided on the mounting plate 39. A second motor 37 is provided at the top of the L-shaped mounting plate 34. A second track 38 is provided on the side wall of the L-shaped mounting plate 34. The second mounting plate 38 is provided with a first mounting bracket 310, which is driven by a second motor 37 via a lead screw. The first mounting bracket 310 is provided with a flip-clamping unit. The L-shaped mounting plate 34 is provided with a through groove 317 that cooperates with the feeding mechanism 5. The mounting plate 39 has a support plate 35 opposite to the side of the L-shaped mounting plate 34 away from the flip-clamping unit. The flip-clamping unit includes a first rotating shaft 313 rotatably mounted on the first mounting bracket 310. The two ends of the first rotating shaft 313 are respectively connected to flip gears. 314. A third motor 312 is provided on the first mounting bracket 310. The output shaft of the third motor 312 is connected to a reversing gear 314. A clamping block 316 is rotatably provided on the first mounting bracket 310 below the first rotating shaft 313. A driven gear 36 is provided on the rotating shaft of the clamping block 316. A transmission belt 315 is respectively fitted on the reversing gear 314 and the driven gear 36 on the same side. A cylinder 311 is provided on the first mounting bracket 310. The output shaft end of the cylinder 311 is connected to a telescopic... The telescopic rod 318 has a telescopic rod sleeve 319 slidably mounted on its outer side wall. The driven gear 36 is sleeved on the outer side wall of the telescopic rod sleeve 319 and is interference-fitted with the telescopic rod sleeve 319. The end of the telescopic rod 318 is provided with a movable clamping block 320. The movable clamping block 320 has a cavity 321. The cavity 321 has a telescopic spring 322. The movable clamping block 320 has a sliding push rod 323. The push rod 323 is located in the cavity 321 and is pushed by the telescopic spring 322.

[0062] Combination Figures 8-10The feeding mechanism 5 includes a second mounting frame 51 mounted on the operating table 1 and above the mounting plate 39. The second mounting frame 51 is double-layered. A slide 56 is provided on the top surface of the lower layer of the second mounting frame 51. A guide rod 57 is provided on the slide 56. A conveying unit is slidably mounted on the guide rod 57. A transmission unit for driving the conveying unit to move is provided on the slide 56. A fixed seat 55 is provided at the top of the upper layer of the second mounting frame 51. A cylinder 4 52 is provided on the fixed seat 55. A feeding groove 54 is provided in front of the end of the telescopic rod of the cylinder 4 52 away from the fixed seat 55 on the second mounting frame 51. A through hole 517 is provided on the side wall of the feeding groove 54 to cooperate with the telescopic rod of the cylinder 4 52. The conveying unit includes a slider 58. Two mirror-shaped connecting rods 512 are provided through the upper part of the slider 58. The two connecting rods 512 are connected at the ends away from the feeding groove 54. The slide block 58 is equipped with a T-shaped clamping block 59. A clamping block that engages with the T-shaped clamping block 59 is located on one side of the top of the slide block 58 near the T-shaped clamping block 59. Two connecting rods 512 have limiting plates 510 at their ends away from the T-shaped clamping block 59. A spring 511 is sleeved on the connecting rod 512 between the limiting plate 510 and the slide block 58. The conveying unit is driven by a motor, which includes a transmission motor 513 mounted on the side of the second mounting bracket 51. The output shaft of the transmission motor 513 is connected to a transmission gear 518 located in the middle of the guide rod 57. The slide block 56 has a U-shaped fixing seat 515 at its top end away from the second mounting bracket 51. A transmission gear 516 rotatably rotates within the U-shaped fixing seat 515. A transmission belt 514 is sleeved on the transmission gear 518 and the transmission gear 516. The upper side of the transmission belt 514 passes through the slide block 58 and is fixedly mounted to it.

[0063] Combined with appendix Figures 11-12The intermediate conveying mechanism 4 includes a fixed plate 41 mounted on the operating table 1. The fixed plate 41 has two opposingly angled support plates 414 and 413. A conveying frame 46 is mounted at the top of the two support plates 414 and 413. A receiving plate 42 is mounted on one side of the conveying frame 46. A cylinder 43 is mounted at the bottom of the conveying frame 46, away from the support plate 413. A top plate 44 is mounted at the end of the telescopic rod of the cylinder 43. A top rod 45 extends from the top plate 44 into the groove between the receiving plate 42 and the conveying frame 46. The fixed plate 41 has a top rod 45 extending into the groove between the receiving plate 42 and the conveying frame 46. The fixed plate 41 has a top rod 45 extending into the groove between the receiving plate 42 and the conveying frame 46. A lifting frame 49 is provided on one side of the conveyor frame 46. The lifting frame 49 has a lifting groove 411. A fan-shaped guide block 412 is provided on the top of the support plate 413 near the lifting frame 49, and the included angle of the fan-shaped guide block 412 is 90°. A cylinder 47 is provided on the side wall of the support plate 413 near the support plate 414. The telescopic rod of the cylinder 47 passes through the support plate 413 and is used to push the parts into the lifting groove 411. A cylinder 48 is provided at the bottom end of the fixed plate 41 below the lifting frame 49. The telescopic rod of the cylinder 48 passes through the fixed plate 41 and extends into the lifting groove 411 and is connected to a push plate 410.

[0064] Combined with appendix Figures 13-17The polishing and wire drawing mechanism 2 includes a third mounting bracket 21 mounted on the operating table 1 and erected above the slot 11. A bidirectional motor 22 is mounted on the third mounting bracket 21 within the slot 11. Drive wheels 23 are connected to the drive shafts of the bidirectional motor 22. A middle support 24 is located at the top of the third mounting bracket 21, and a fourth mounting bracket 210 is located at the top of the middle support 24. Connecting plates 28 are respectively mounted on the two side walls of the middle support 24 near the top. Connecting sleeves 29 are located at the ends of the two connecting plates 28 away from the middle support 24. An adjustment sleeve 29 passes through the connecting sleeve 29. The adjusting rod 212 has a U-shaped seat 217 at its top. A tension spring 211 is fitted on the adjusting rod 212 between the connecting sleeve 29 and the U-shaped seat 217. A driven wheel 26 is rotatably mounted on the U-shaped seat 217. Rotary motors 216 are respectively mounted on both sides of the fourth mounting bracket 210. The drive shaft of the rotary motor 216 passes through the fourth mounting bracket 210 and is connected to an eccentric connecting block 215. A connecting rod 214 is mounted on the eccentric connecting block 215. The other end of the connecting rod 214 is connected to an adjusting plate 213. The adjusting plate 213 is connected to the bottom end of the U-shaped seat 217. Grinding belt angle adjustment mechanisms 6 are provided on both sides of the intermediate support 24. A grinding belt 25 is fitted onto the drive wheel 23, driven wheel 26, and grinding belt angle adjustment mechanism 6. The grinding belt angle adjustment mechanism 6 is of type one, which includes an L-shaped connecting plate 61 fixedly connected to the intermediate support 24. An adjustment plate 61 is provided on the side of the L-shaped connecting plate 61 away from the intermediate support 24. Adjustment plates 62 are provided at the upper and lower ends of the adjustment plate 613. Adjustment rods 63 are respectively provided through the two adjustment plates 62 on both sides. Adjustment plates 63 are respectively connected to the ends of the four adjustment rods 63. 5. A guide rod 615 is slidably provided between the adjusting rods 63 in the second adjusting plate 62. The guide rod 615 is connected to the third adjusting plate 65. A spring 64 is sleeved on the guide rod 615 on the side of the third adjusting plate 65 near the second adjusting plate 62. A first ring frame 66 is rotatably provided between the third adjusting plates 65. An adjusting wheel 27 is rotatably provided in the first ring frame 66. An L-shaped fixing strip 614 is provided at the bottom end of the third adjusting plate 65 near the second adjusting plate 62. An adjusting screw 67 is threadedly connected on the L-shaped fixing strip 614, and a gap is left between the end of the adjusting screw 67 and the side of the first ring frame 66.

[0065] Example 2

[0066] Combination Figures 6-7The transmission unit is driven by a motor: the motor drive includes a transmission motor 513 set on the side of the second mounting bracket 51, the output shaft of the transmission motor 513 is connected to a transmission gear 518 set in the middle of the guide rod 57, the slide block 56 has a U-shaped fixed seat 515 at the top of the side away from the second mounting bracket 51, a transmission gear 516 is rotatably set in the U-shaped fixed seat 515, a transmission belt 514 is sleeved on the transmission gear 518 and the transmission gear 516, the upper side of the transmission belt 514 passes through the slider 58 and is fixedly set with the slider 58;

[0067] Combination Figure 18 The grinding belt angle adjustment mechanism 6 is a second type of structure, which includes an L-shaped connecting plate 61. The L-shaped connecting plate 61 has a U-shaped frame 68 on the side away from the intermediate support 24. The U-shaped frame 68 has an adjusting rod 69 on the side wall away from the L-shaped connecting plate 61, with the upper and lower ends respectively. The two adjusting rods 69 have adjusting blocks 611 on the ends away from the U-shaped frame 68. The side walls of the two adjusting blocks 611 are rotatably equipped with H-shaped adjusting plates 610. A spring 64 is sleeved on the adjusting rod 69 between the adjusting block 611 and the side wall of the U-shaped frame 68. The side wall of the H-shaped adjusting plate 610 is equipped with a drag-reducing mechanism 612, which is graphite cloth. Other structures are the same as in embodiment one.

[0068] Working principle of the invention:

[0069] During processing, cylinder four first operates, pressing the lock against the material feed trough to prevent the upper lock body from falling. Then, the transmission cylinder retracts, pressing against the limit plate, causing the T-shaped clamping block to separate from the clamping block on the slider. Cylinder four then retracts, allowing the polished and brushed lock to fall through the material feed trough. Next, cylinder four operates again, pressing the upper lock against the material feed trough, and the lock falls between the T-shaped clamping block and the clamping block on the slider. Driven by the transmission cylinder or transmission motor, the slider moves, and the limit plate is no longer under force. Under the return action of the spring, the T-shaped clamping block is pulled closer to one side of the slider, allowing the T-shaped clamping block to engage with the clamping block to clamp the lock. The slider is moved below the clamping block. The first, second, and third motors realize the horizontal movement, vertical movement, and flipping of the clamping block of the clamping mechanism, moving the clamping block to both sides of the lock. The cylinder is then activated, pushing the clamping block to the other side, locking the lock. The lock is clamped, and the bidirectional motor is started, which drives the drive wheels on both sides to rotate, thereby rotating the polishing belt. The clamping mechanism holds the lock in place with the polishing belt for surface polishing and wire drawing. The polishing belt is polished by the protruding part of the polishing belt angle adjustment mechanism, which creates a tangential line. After polishing the two opposite sides, the lock is moved to the top of the guide plate. The control cylinder retracts the clamping block, and the lock falls into the groove in the middle of the guide plate. The first cylinder is started, and the telescopic rod of the first cylinder retracts, driving the push rod to move and push the lock into the moving groove of the conveyor frame. This process is repeated. Through the pushing of multiple locks, the first lock is rotated 90° by sliding down the fan-shaped guide block. It is then pushed out by the telescopic rod of the second cylinder to the lifting groove and placed above the push plate. The third cylinder pushes the push plate to lift the lock, and the clamping mechanism and polishing and wire drawing mechanism work together to process the last few sides.

[0070] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the spirit of the invention, such designs should fall within the protection scope of the present invention.

Claims

1. A surface polishing wire drawing apparatus characterized by: The processing device comprises an operation table (1), two sets of clamping mechanisms (3), an intermediate conveying mechanism (4), a polishing wire drawing mechanism (2) and a feeding mechanism (5) are arranged on the operation table (1), the intermediate conveying mechanism (4) is arranged between the clamping mechanism (3) and the polishing wire drawing mechanism (2), the intermediate conveying mechanism (4) is arranged at the bottom of the clamping mechanism (3), the clamping mechanism (3) is used for clamping the parts conveyed by the feeding mechanism (5) and realizing part overturning, up-down movement and left-right movement, the intermediate conveying mechanism (4) is used for conveying and turning the parts, the polishing wire drawing mechanism (2) is provided with a polishing belt angle adjusting mechanism (6), the polishing wire drawing mechanism (2) is used for polishing the surface of the parts in cooperation with the clamping mechanism (3), and a slot hole (11) is arranged on the operation table (1); The two sets of clamping mechanisms (3) respectively comprise a U-shaped fixed seat (31) arranged on the operation table (1), one side end of the U-shaped fixed seat (31) is provided with a first motor (32), the U-shaped fixed seat (31) is provided with a track one (33), the track one (33) is slidably provided with a mounting plate (39), the mounting plate (39) is driven by the first motor (32) through a lead screw, the mounting plate (39) is provided with an L-shaped mounting plate (34), the top end of the L-shaped mounting plate (34) is provided with a second motor (37), the sidewall of the L-shaped mounting plate (34) is provided with a track two (38), the track two (38) is provided with a first mounting frame (310), and the first mounting frame (310) is driven by the second motor (37) through a lead screw, the first mounting frame (310) is provided with a turnover clamping unit, the L-shaped mounting plate (34) is provided with a through slot (317) matched with the feeding mechanism (5), and the mounting plate (39) is provided with a supporting plate (35) on the side, away from the turnover clamping unit, of the L-shaped mounting plate (34). The intermediate conveying mechanism (4) comprises a fixed plate (41) arranged on the operation table (1), two support plates (414) and (413) are arranged on the fixed plate (41) oppositely, the top ends of the two support plates (414) and (413) are provided with a conveying frame (46), one side end of the conveying frame (46) is provided with an extension plate (42) arranged oppositely, the bottom end of the conveying frame (46) is provided with a cylinder (43) away from the support plate (413), the extension rod end of the cylinder (43) is provided with a top plate (44), the top plate (44) is provided with a top rod (45) extending into the recess in the middle of the extension plate (42) and the conveying frame (46), the fixed plate (41) is provided with a jacking frame (49) near the conveying frame (46), the jacking frame (49) is provided with a jacking groove (411), the top of the support plate (413) near the jacking frame (49) is provided with a fan-shaped guide block (412) with an included angle of 90°-180°, the support plate (413) is provided with a cylinder (47) on the side wall near the support plate (414), the extension rod of the cylinder (47) penetrates through the support plate (413) and is used for pushing the parts into the jacking groove (411), the bottom end of the fixed plate (41) is provided with a cylinder (48) below the jacking frame (49), the extension rod of the cylinder (48) penetrates through the fixed plate (41) and extends into the jacking groove (411) and is connected with a push plate (410). The polishing wire drawing mechanism (2) comprises a third mounting frame (21) arranged on the operating table (1) and erected above the slot hole (11), a bidirectional motor (22) is arranged on the third mounting frame (21) in the slot hole (11), driving wheels (23) are respectively connected to the transmission shafts of the bidirectional motor (22), an intermediate support (24) is arranged at the top end of the third mounting frame (21), a fourth mounting frame (210) is arranged at the top end of the intermediate support (24), connecting plates (28) are respectively arranged at the top ends of the two side walls of the intermediate support (24), connecting sleeves (29) are arranged at the side end portions of the two connecting plates (28) away from the intermediate support (24), adjusting rods (212) are arranged in the connecting sleeves (29), U-shaped seats (217) are arranged at the top ends of the adjusting rods (212), tension springs (211) are arranged on the adjusting rods (212) between the connecting sleeves (29) and the U-shaped seats (217), driven wheels (26) are rotatably arranged on the U-shaped seats (217), rotating motors (216) are arranged on the fourth mounting frame (210) at the two sides, eccentric connecting blocks (215) are connected to the transmission shafts of the rotating motors (216) and penetrate through the fourth mounting frame (210), connecting rods (214) are arranged on the eccentric connecting blocks (215), adjusting plates (213) are connected to the other ends of the connecting rods (214), the adjusting plates (213) are connected to the bottom ends of the U-shaped seats (217), polishing belt angle adjusting mechanisms (6) are arranged at the two sides of the intermediate support (24), and polishing belts (25) are arranged on the driving wheels (23), the driven wheels (26) and the polishing belt angle adjusting mechanisms (6).

2. A surface polishing wire drawing apparatus according to claim 1, wherein: The turnover clamping unit comprises a first rotating shaft (313) rotatably arranged on a first mounting frame (310), both ends of the first rotating shaft (313) are respectively connected with turnover gears (314), a third motor (312) is arranged on the first mounting frame (310), an output shaft of the third motor (312) is connected with one of the turnover gears (314), a clamping block (316) is rotatably arranged below the first rotating shaft (313) on the first mounting frame (310), a driven gear (36) is arranged on a rotating shaft of the clamping block (316), the turnover gear (314) and the driven gear (36) on the same side are respectively sleeved with a transmission belt (315), a pneumatic cylinder (311) is arranged on the first mounting frame (310), an output shaft end of the pneumatic cylinder (311) is connected with an extension rod (318), a telescopic sleeve (319) is slidably arranged on an outer side wall of the extension rod (318), the driven gear (36) is sleeved on the outer side wall of the telescopic sleeve (319) and is in interference fit with the telescopic sleeve (319), an end of the extension rod (318) is provided with a moving clamping block (320), a cavity (321) is arranged in the moving clamping block (320), a telescopic spring (322) is arranged in the cavity (321), a top rod (323) is slidably arranged in the moving clamping block (320), and the top rod (323) is arranged in the cavity (321) and is pushed by the telescopic spring (322).

3. A surface polishing and wire drawing apparatus as claimed in claim 1, wherein: The feeding mechanism (5) comprises a second mounting frame (51) arranged on the operation table (1) and erected above the mounting plate (39), the second mounting frame (51) is arranged in double layers, a sliding seat (56) is arranged on the top surface of the lower layer of the second mounting frame (51), a guide rod (57) is arranged on the sliding seat (56), a conveying unit is slidably arranged on the guide rod (57), a transmission unit for driving the conveying unit to move is arranged on the sliding seat (56), a fixing seat (55) is arranged at the top end of the upper layer of the second mounting frame (51), a pneumatic cylinder four (52) is arranged on the fixing seat (55), and a discharging chute (54) is arranged in front of an end of the extension rod of the pneumatic cylinder four (52) away from the fixing seat (55) on the second mounting frame (51).

4. A surface polishing and wire drawing apparatus according to claim 3, wherein: The conveying unit comprises a sliding block (58), two mirror image arranged connecting rods (512) are arranged in the sliding block (58) and penetrate the upper part, a T-shaped clamping block (59) is connected to the side end of the connecting rod (512) away from the discharging chute (54), a clamping block matched with the T-shaped clamping block (59) is arranged on the side of the top end of the sliding block (58) away from the T-shaped clamping block (59), a limiting plate (510) is arranged on the side end of the connecting rod (512) away from the T-shaped clamping block (59), and a spring one (511) is sleeved on the connecting rod (512) between the limiting plate (510) and the sliding block (58).

5. A surface polishing wire drawing apparatus according to claim 4, wherein: The conveying unit adopts motor drive or cylinder drive; The motor drive comprises a transmission motor (513) arranged on the side of the second mounting frame (51), the output shaft of the transmission motor (513) is connected with a transmission gear one (518) arranged in the middle of the guide rod (57), the sliding base (56) is provided with a U-shaped fixed seat one (515) at the top end away from the side provided with the second mounting frame (51), the U-shaped fixed seat one (515) is rotatably provided with a transmission gear two (516), the transmission gear one (518) and the transmission gear two (516) are sleeved with a transmission belt (514), the upper side of the transmission belt (514) penetrates through the sliding block (58) and is fixedly arranged with the sliding block (58); The cylinder drive comprises a transmission cylinder (53) arranged on the outer side of the end of the sliding base (56) close to the second mounting frame (51), the telescopic rod of the transmission cylinder (53) penetrates through the side wall of the sliding base (56) and is connected with the sliding block (58).

6. A surface polishing wire drawing apparatus as defined in claim 1, wherein: The polishing belt angle adjusting mechanism (6) comprises two structural forms of form one and form two: Form one comprises an L-shaped connecting plate (61) fixedly connected with the middle support (24), the L-shaped connecting plate (61) is provided with an adjusting plate one (613) away from the middle support (24), the upper and lower ends of the adjusting plate one (613) are respectively provided with adjusting plate two (62), the two adjusting plate two (62) are respectively provided with adjusting rods (63) penetrating through the two sides, the ends of the four adjusting rods (63) are respectively connected with adjusting plate three (65), the adjusting plate two (62) is slidably provided with a guide rod (615) between the adjusting rods (63), the guide rod (615) is connected with the adjusting plate three (65), the guide rod (615) is sleeved with a spring two (64) on the side of the adjusting plate three (65) close to the adjusting plate two (62), the adjusting plate three (65) is rotatably provided with a meandering frame one (66) between them, the meandering frame one (66) is rotatably provided with an adjusting wheel (27) therein, the bottom end of the adjusting plate three (65) is provided with an L-shaped fixed strip (614) on the side close to the adjusting plate two (62), the L-shaped fixed strip (614) is provided with a threaded adjusting lead screw (67), and the end of the adjusting lead screw (67) is spaced apart from the side surface of the meandering frame one (66). Form two includes L-shaped connecting plate (61), one side away from the intermediate support (24) is provided with back-shaped frame two (68), the side wall away from the side wall of L-shaped connecting plate (61) and close to the upper and lower ends are respectively provided with adjusting rod one (69), two adjusting rod one (69) in the side end away from back-shaped frame two (68) are respectively provided with adjusting block (611), the side wall of two adjusting block (611) is rotatably provided with H-shaped adjusting plate (610), the spring two (64) is sleeved between the side wall of adjusting block (611) and back-shaped frame two (68) on adjusting rod one (69), the side wall of H-shaped adjusting plate (610) is provided with resistance reduction mechanism (612), the resistance reduction mechanism (612) is graphite cloth or graphite belt.

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