Aluminum veneer punching device capable of collecting aluminum powder scraps

By designing an aluminum veneer punching device with scraper and crushing roller, the problem of ineffective collection of aluminum powder and aluminum debris in the prior art is solved, and centralized collection and cleaning of aluminum powder debris is realized, and the practicality and resource utilization of the device are improved.

CN222856443UActive Publication Date: 2025-05-13JIANGSU RUNCHANG METAL TECH CO LTD
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Patent Information

Application Number
CN202420850766.8
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-04-23
Publication Date
2025-05-13
Estimated Expiration
2034-04-23

AI Technical Summary

Technical Problem

The aluminum powder and aluminum debris produced by existing aluminum veneer punching devices during the punching process cannot be effectively collected and cleaned, reducing the practicality of the device.

Method used

An aluminum veneer punching device including a base plate, a workbench, a through groove, a collection box and a motor is designed. The motor drives the two-way threaded rod to rotate, so that the scraper pushes the scattered aluminum powder and aluminum debris into the through-trough, and then falls into the collection box. At the same time, the motor drives the crushing roller to crush the aluminum debris, and the aluminum powder slides down to the collection box outlet through the deflector, making it easier to clean and recycle.

Benefits of technology

Centralized collection and cleaning of aluminum pulverized chips is realized, the practicality of the device is improved, and resource utilization is improved through crushing and recycling.

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Abstract

The utility model discloses an aluminum veneer punching device capable of collecting aluminum powder chippings, and relates to the technical field of aluminum veneer punching, the aluminum veneer punching device comprises a bottom plate, the top end of the bottom plate is fixedly connected with four supporting legs in a rectangular array, the top ends of the supporting legs are fixedly connected with a workbench, the middle part of the workbench is provided with a through groove, and the through groove is fixedly connected with the bottom plate. Supporting frames are fixedly connected to the left portion and the right portion of the top end of the workbench, an adjusting mechanism is fixedly connected to the front portion of the top end of the workbench, and a punching mechanism is fixedly connected to the tops of the supporting frames. The first motor is started to drive the two-way threaded rod to rotate, the scraper slides on the outer wall of the two-way threaded rod, meanwhile, the inner wall of the scraper slides on the outer wall of the guide rod, the scraper pushes aluminum powder and aluminum scraps scattered at the top end of the workbench into the through groove formed in the outer wall of the workbench, and the aluminum powder and the aluminum scraps fall into the collecting box through the through groove. And the effect of conveniently cleaning the aluminum powder scraps on the workbench is achieved.
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Description

Technical Field

[0001] The utility model relates to the technical field of aluminum single plate punching, in particular to an aluminum single plate punching device capable of collecting aluminum crushed scraps. Background Art

[0002] Aluminum veneer refers to a building decoration material that is processed by chroming and other treatments and then processed using fluorocarbon spraying technology. The fluorocarbon coating has excellent corrosion resistance and weather resistance, can resist acid rain, salt spray and various air pollutants, has excellent cold and heat resistance, can withstand strong ultraviolet rays, can remain non-fading and non-powdering for a long time, and has a long service life. In order to meet the requirements of use, it is sometimes necessary to punch holes in the aluminum veneer, but the aluminum powder debris generated after punching cannot be well collected and sorted.

[0003] For example, Chinese patent publication number CN212917218U discloses an aluminum plate punching device, including a workbench and an axial moving device arranged on the workbench, the axial moving device includes two electric slide rails and an electric slider arranged in the electric slide rails, each of the electric sliders is provided with a slide, each of the slides is provided with a limit device, each of the limit devices is provided with a moving device for realizing displacement adjustment, each of the moving devices is provided with a positioning device for realizing a positioning function, each of the slides is also provided with a positioning sensor, which is located on the outside of the two electric slide rails, two vertically arranged vertical plates are fastened to the workbench, and a horizontally arranged horizontal plate is fastened to the end faces of the two vertical plates, a punching machine is provided on the horizontal plate, and a receiver matching the positioning sensor is also provided on the horizontal plate.

[0004] The existing technology has the following problems:

[0005] When punching aluminum veneer in the prior art, the scattered aluminum powder and aluminum debris on the workbench are inconvenient to clean, which reduces the practicality of the device. At the same time, the prior art does not centrally collect and process the aluminum powder and aluminum debris generated during punching, which reduces the practicality of the device. Utility Model Content

[0006] The utility model provides an aluminum single plate punching device capable of collecting aluminum crushed scraps, so as to solve the problems raised in the above background technology.

[0007] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0008] The cam is provided with a plurality of support legs, the plurality of support legs are provided with a plurality of support legs, the plurality of support legs are provided with a plurality of support legs, and the plurality of support legs are provided with a plurality of support legs.

[0009] Preferably: the output end of motor 1 is fixedly connected with a bidirectional threaded rod, the right end of the bidirectional threaded rod is rotatably connected to the top of the workbench, the left and right parts of the outer wall of the bidirectional threaded rod are threadedly connected with scrapers, the rear part of the scraper is slidably connected with a guide rod, and one end of the guide rod is fixedly connected to the top of the workbench.

[0010] Preferably: the front and rear parts of the top of the workbench are fixedly connected with a fixing plate, the bottom of the fixing plate is slidably connected to the outer wall of the scraper, the bottom of the fixing plate is fixedly connected to a supporting plate, the inner wall of the supporting plate is slidably connected to a limiting block 1, the top of the limiting block 1 is fixedly connected with a mounting plate, the bottom end of the mounting plate is slidably connected to the top of the supporting plate, the top of the mounting plate is threadedly connected to a threaded rod 1, and the bottom end of the threaded rod 1 is rotatably connected to a pressure plate.

[0011] Preferably: the output end of the motor two is fixedly connected to a threaded rod three, the rear end of the threaded rod three is rotatably connected to the rear part of the top end of the support frame, the front part of the threaded rod three is transmission connected to a transmission belt, the left part of the transmission belt is transmission connected to a threaded rod two, one end of the threaded rod two is rotatably connected to the top of the support frame, and the outer walls of the threaded rod three and the threaded rod two are both threadedly connected to sliders.

[0012] Preferably, the bottom of the sliding block is fixedly connected to a second limiting block, the outer wall of the second limiting block is slidably connected to the top of the support frame, and the outer shape of the second limiting block is T-shaped.

[0013] Preferably: one end of the slider is fixedly connected to a slide rod, the outer wall of the slide rod is slidably connected to an electric slider, the bottom end of the electric slider is fixedly connected to a telescopic cylinder, and the output end of the telescopic cylinder is fixedly connected to a punch.

[0014] Preferably: a box door is inserted into the bottom of the right end of the collecting box, inclined plates are fixedly connected to the tops of the left and right ends of the inner cavity of the collecting box, a guide plate is fixedly connected to the bottom of the collecting box, a support seat is fixedly connected to the rear end of the collecting box, and a motor three is fixedly connected to the top of the support seat.

[0015] Preferably: the output end of the motor three is fixedly connected to a rotating shaft, the front end of the rotating shaft is rotatably connected to the front end of the inner cavity of the collection box, the rear part of the outer wall of the rotating shaft is fixedly connected to a driving gear, the outer wall of the driving gear is meshed with a driven gear, and the outer wall of the rotating shaft is fixedly connected to a crushing roller.

[0016] Due to the adoption of the above technical solution, the utility model has achieved the following technical progress compared with the prior art:

[0017] 1. The utility model provides an aluminum plate punching device capable of collecting aluminum shavings. By starting a motor 1, a bidirectional threaded rod is driven to rotate, so that a scraper slides on the outer wall of the bidirectional threaded rod, and at the same time, the inner wall of the scraper slides on the outer wall of the guide rod. Thus, the scraper pushes the aluminum powder and aluminum shavings scattered on the top of the workbench into a through groove provided on the outer wall of the workbench, and the aluminum powder and aluminum shavings fall into a collection box from the through groove, which facilitates the cleaning of the aluminum shavings on the workbench.

[0018] 2. The utility model provides an aluminum plate punching device that can collect aluminum shavings. By starting motor three, the driving gear is driven to mesh with the driven gear, thereby driving the rotating shaft to rotate, and the rotating shaft drives the crushing roller to rotate. The crushing roller crushes the aluminum shavings and crushes them into aluminum powder. The crushed aluminum powder falls onto the guide plate. Since the guide plate is at a certain angle, the aluminum powder slides to the outlet of the collection box along the inclined direction of the guide plate. Subsequently, the box door is opened to clean the aluminum powder out and recycle it for reuse, thereby achieving the effect of recycling aluminum shavings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the main view of the utility model;

[0020] Figure 2 It is a schematic diagram of the cutaway structure of the main view of the utility model;

[0021] Figure 3 It is a structural schematic diagram of the adjustment mechanism of the utility model;

[0022] Figure 4 It is a structural schematic diagram of the punching mechanism of the utility model;

[0023] Figure 5 For this utility model Figure 4 The enlarged structural diagram at A in the middle;

[0024] Figure 6It is a structural schematic diagram of the collection mechanism of the utility model.

[0025] In the figure: 1. bottom plate; 11. supporting leg; 12. workbench; 13. supporting frame; 2. adjusting mechanism; 21. motor 1; 22. bidirectional threaded rod; 23. scraper; 231. guide rod; 24. fixing plate; 241. supporting plate; 25. mounting plate; 26. limit block 1; 27. threaded rod 1; 28. pressing plate; 3. punching mechanism; 31. motor 2; 32. transmission belt; 321. threaded rod 2; 33. threaded rod 3; 34. slider; 35. limit block 2; 36. slider; 37. electric slider; 38. telescopic cylinder; 39. punch; 4. collecting mechanism; 41. collecting box; 42. box door; 43. inclined plate; 44. guide plate; 45. supporting seat; 46. motor 3; 461. driving gear; 462. driven gear; 463. rotating shaft; 47. crushing roller. DETAILED DESCRIPTION

[0026] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0027] like Figure 1-Figure 4 As shown, an aluminum single plate punching device capable of collecting aluminum crushed chips comprises a base plate 1, the top of the base plate 1 is fixedly connected with four supporting legs 11 in a rectangular array, the top of the supporting legs 11 is fixedly connected with a workbench 12, a through slot is provided in the middle of the workbench 12, the left and right parts of the top of the workbench 12 are fixedly connected with a support frame 13, the front part of the top of the workbench 12 is fixedly connected with an adjusting mechanism 2, the top of the support frame 13 is fixedly connected with a punching mechanism 3, the top of the base plate 1 is fixedly connected with a collecting mechanism 4, the adjusting mechanism 2 comprises a motor 1 21, the bottom end of the motor 1 21 is fixedly connected to the front part of the top of the workbench 12, the punching mechanism 3 comprises a motor 2 31, the bottom end of the motor 2 31 is fixedly connected to the top of the support frame 13, the collecting mechanism 4 comprises a collecting box 41, the bottom end of the collecting box 41 is fixedly connected to the top of the base plate 1, the top of the collecting box 41 is fixedly connected to the bottom end of the workbench 12, and the collecting box 41 is located directly below the through slot.

[0028] The aluminum veneer is fixed by the adjusting mechanism 2, and then the aluminum veneer is punched by the punching mechanism 3. After the punching is completed, the aluminum shavings generated during the punching are collected by the collecting mechanism 4 for subsequent processing.

[0029] like Figure 2 , Figure 3As shown, the output end of the motor 21 is fixedly connected to a bidirectional threaded rod 22, the right end of the bidirectional threaded rod 22 is rotatably connected to the top of the workbench 12, the left and right parts of the outer wall of the bidirectional threaded rod 22 are threadedly connected to a scraper 23, the rear part of the scraper 23 is slidably connected to a guide rod 231, and one end of the guide rod 231 is fixedly connected to the top of the workbench 12.

[0030] Start the motor 21 to drive the bidirectional threaded rod 22 to rotate, so that the scraper 23 slides on the outer wall of the bidirectional threaded rod 22, and at the same time, the inner wall of the scraper 23 slides on the outer wall of the guide rod 231. The guide rod 231 guides the scraper 23 so that the scraper 23 will not deviate when sliding. As a result, the scraper 23 pushes the aluminum powder and aluminum debris scattered on the top of the workbench 12 into the through groove opened on the outer wall of the workbench 12, and falls into the collection box 41 from the through groove, which makes it convenient to clean the aluminum powder and aluminum debris on the workbench 12.

[0031] like Figure 2 , Figure 3 As shown, the front and rear parts of the top of the workbench 12 are fixedly connected with a fixing plate 24, the bottom of the fixing plate 24 is slidably connected to the outer wall of the scraper 23, the bottom of the fixing plate 24 is fixedly connected to a supporting plate 241, the inner wall of the supporting plate 241 is slidably connected to a limiting block 26, the top of the limiting block 26 is fixedly connected with a mounting plate 25, the bottom end of the mounting plate 25 is slidably connected to the top of the supporting plate 241, the top of the mounting plate 25 is threadedly connected to a threaded rod 27, and the bottom end of the threaded rod 27 is rotatably connected to a pressing plate 28.

[0032] The two ends of the aluminum veneer to be punched are placed on the support plate 241, and then the mounting plate 25 is pulled according to the width of the aluminum veneer so that the outer wall of the mounting plate 25 contacts the outer wall of the aluminum veneer. Then, the threaded rod 27 is rotated to make the threaded rod 27 drive the pressure plate 28 to move downward, so that the lower end of the pressure plate 28 contacts the top end of the aluminum veneer, thereby fixing the aluminum veneer and achieving a fixing effect.

[0033] like Figure 2 , Figure 4 As shown, the output end of the motor 2 31 is fixedly connected to the threaded rod 3 33, the rear end of the threaded rod 33 is rotatably connected to the rear of the top end of the support frame 13, the front of the threaded rod 33 is transmission-connected to the transmission belt 32, the left part of the transmission belt 32 is transmission-connected to the threaded rod 2 321, one end of the threaded rod 2 321 is rotatably connected to the top of the support frame 13, and the outer walls of the threaded rod 33 and the threaded rod 2 321 are both threadedly connected to the slider 34.

[0034] By starting the second motor 31 , the second motor 31 drives the transmission belt 32 to rotate, and the transmission belt 32 drives the second threaded rod 321 to rotate. At the same time, the second motor 31 drives the third threaded rod 33 to rotate, thereby causing the slider 34 to slide.

[0035] like Figure 2 , Figure 4 , Figure 5 As shown, the bottom of the slider 34 is fixedly connected to the second limiting block 35, the outer wall of the second limiting block 35 is slidably connected to the top of the support frame 13, and the outer shape of the second limiting block 35 is T-shaped.

[0036] When the slider 34 moves, it drives the second limiting block 35 to slide synchronously on the inner wall of the support frame 13. The second limiting block 35 limits and guides the slider 34, so that the slider 34 is more stable when sliding.

[0037] like Figure 2 , Figure 4 As shown, one end of the slider 34 is fixedly connected to a slide rod 36, the outer wall of the slide rod 36 is slidably connected to an electric slider 37, the bottom end of the electric slider 37 is fixedly connected to a telescopic cylinder 38, and the output end of the telescopic cylinder 38 is fixedly connected to a punch 39.

[0038] When the slider 34 moves, it drives the slide bar 36 to move synchronously, and the slide bar 36 drives the punch 39 to move synchronously, changing the front and rear position of the punch 39. At the same time, the electric slider 37 drives the punch 39 to slide left and right on the outer wall of the slide bar 36, thereby changing the left and right position of the punch 39 and achieving the effect of adjusting the punching position.

[0039] like Figure 2 , Figure 6 As shown, a box door 42 is inserted into the bottom of the right end of the collecting box 41, inclined plates 43 are fixedly connected to the tops of the left and right ends of the inner cavity of the collecting box 41, a guide plate 44 is fixedly connected to the bottom of the collecting box 41, a support seat 45 is fixedly connected to the rear end of the collecting box 41, a motor three 46 is fixedly connected to the top of the support seat 45, a rotating shaft 463 is fixedly connected to the output end of the motor three 46, a front end of the rotating shaft 463 is rotatably connected to the front end of the inner cavity of the collecting box 41, a driving gear 461 is fixedly connected to the rear part of the outer wall of the rotating shaft 463, a driven gear 462 is meshed with the outer wall of the driving gear 461, and a crushing roller 47 is fixedly connected to the outer wall of the rotating shaft 463.

[0040] Starting motor three 46 drives driving gear 461 to mesh with driven gear 462, thereby driving shaft 463 to rotate, and shaft 463 drives crushing roller 47 to rotate, and crushing roller 47 crushes aluminum chips into aluminum powder, and the crushed aluminum powder falls onto guide plate 44. Since guide plate 44 is at a certain angle, the aluminum powder slides along the inclination direction of guide plate 44 to the outlet of collection box 41. Subsequently, by opening box door 42, the aluminum powder can be cleaned out and recycled for reuse, thereby achieving the effect of recycling aluminum chips.

[0041] The working principle of the utility model is as follows: when in use, the two ends of the aluminum veneer to be punched are placed on the support plate 241, and then the mounting plate 25 is pulled according to the width of the aluminum veneer, so that the outer wall of the mounting plate 25 contacts the outer wall of the aluminum veneer, and then the threaded rod 27 is rotated to make the threaded rod 27 drive the pressing plate 28 to move downward, so that the bottom end of the pressing plate 28 is in close contact with the top end of the aluminum veneer, thereby fixing the aluminum veneer and achieving a fixing effect. Then, according to the position of the required punching, the motor 2 31 and the electric slider 37 are started, and the motor 2 31 drives the transmission belt 32 to rotate, and the transmission belt 32 The motor 2 31 drives the threaded rod 321 to rotate, and the motor 2 31 drives the threaded rod 33 to rotate, thereby causing the slider 34 to slide, and the slider 34 drives the limit block 2 35 to slide synchronously on the inner wall of the support frame 13, and the limit block 2 35 limits the slider 34 to guide the slider 34, so that the slider 34 is more stable when sliding. At the same time, the slider 34 drives the slide bar 36 to move synchronously, and the slide bar 36 drives the punch 39 to move synchronously, changing the front and rear position of the punch 39. At the same time, the electric slider 37 drives the punch 39 to slide left and right on the outer wall of the slide bar 36, thereby changing the left and right position of the punch 39, which plays a role in adjusting the punching position. The telescopic cylinder 38 can then be started, and the punch 39 can be driven by the telescopic cylinder 38 to punch the aluminum single plate. When the punching is completed, the motor 21 is started to drive the bidirectional threaded rod 22 to rotate, so that the scraper 23 slides on the outer wall of the bidirectional threaded rod 22, and the inner wall of the scraper 23 slides on the outer wall of the guide rod 231. The guide rod 231 guides the scraper 23 so that the scraper 23 will not deviate when sliding. As a result, the scraper 23 pushes the aluminum powder and aluminum debris scattered on the top of the workbench 12 into the through groove opened on the outer wall of the workbench 12, and falls into the collection box 41 from the through groove. When the motor 46 is started, the driving gear 461 is driven to mesh with the driven gear 462, thereby driving the rotating shaft 463 to rotate, and the rotating shaft 463 drives the crushing roller 47 to rotate, and the crushing roller 47 crushes the aluminum debris into aluminum powder. The crushed aluminum powder falls on the guide plate 44. Since the guide plate 44 is at a certain angle, the aluminum powder slides along the inclined direction of the guide plate 44 to the outlet of the collection box 41. Subsequently, the box door 42 is opened, and the aluminum powder can be cleaned out and recycled for reuse, which has the effect of recycling aluminum debris, thereby greatly improving the user experience.

[0042] The above generally describes the present invention in detail, but it is obvious to a person skilled in the art that some modifications or improvements can be made to the present invention. Therefore, modifications or improvements that do not deviate from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. An aluminum plate punching device capable of collecting aluminum shavings, comprising a bottom plate (1), characterized in that: The top of the bottom plate (1) is fixedly connected to four supporting legs (11) in a rectangular array, the top of the supporting legs (11) is fixedly connected to a workbench (12), a through slot is provided in the middle of the workbench (12), the left and right parts of the top of the workbench (12) are fixedly connected to a supporting frame (13), the front part of the top of the workbench (12) is fixedly connected to an adjusting mechanism (2), the top of the supporting frame (13) is fixedly connected to a punching mechanism (3), the top of the bottom plate (1) is fixedly connected to a collecting mechanism (4), the adjusting mechanism (2) is fixedly connected to the front part of the top of the workbench (12), the top of the supporting frame (13) is fixedly connected to the punching mechanism (3), the top of the bottom plate (1) is fixedly connected to the ... The mechanism (2) comprises a motor 1 (21), the bottom end of which is fixedly connected to the front of the top of the workbench (12); the punching mechanism (3) comprises a motor 2 (31), the bottom end of which is fixedly connected to the top of the support frame (13); the collecting mechanism (4) comprises a collecting box (41), the bottom end of which is fixedly connected to the top of the base plate (1), the top end of which is fixedly connected to the bottom end of the workbench (12), and the collecting box (41) is located directly below the through slot.

2. The aluminum plate punching device capable of collecting aluminum shavings according to claim 1, characterized in that: The output end of the motor 1 (21) is fixedly connected to a bidirectional threaded rod (22), the right end of the bidirectional threaded rod (22) is rotatably connected to the top of the workbench (12), the left and right parts of the outer wall of the bidirectional threaded rod (22) are both threadedly connected to scrapers (23), the rear part of the scraper (23) is slidably connected to a guide rod (231), and one end of the guide rod (231) is fixedly connected to the top of the workbench (12).

3. The aluminum plate punching device capable of collecting aluminum shavings according to claim 2 is characterized in that: The front and rear parts of the top of the workbench (12) are fixedly connected to a fixing plate (24), the bottom of the fixing plate (24) is slidably connected to the outer wall of the scraper (23), the bottom of the fixing plate (24) is fixedly connected to a supporting plate (241), the inner wall of the supporting plate (241) is slidably connected to a limiting block (26), the top of the limiting block (26) is fixedly connected to a mounting plate (25), the bottom end of the mounting plate (25) is slidably connected to the top of the supporting plate (241), the top of the mounting plate (25) is threadedly connected to a threaded rod (27), and the bottom end of the threaded rod (27) is rotatably connected to a pressing plate (28).

4. The aluminum plate punching device capable of collecting aluminum shavings according to claim 1, characterized in that: The output end of the motor 2 (31) is fixedly connected to a threaded rod 3 (33), the rear end of the threaded rod 3 (33) is rotatably connected to the rear part of the top end of the support frame (13), the front part of the threaded rod 3 (33) is transmission-connected to a transmission belt (32), the left part of the transmission belt (32) is transmission-connected to a threaded rod 2 (321), one end of the threaded rod 2 (321) is rotatably connected to the top of the support frame (13), and the outer walls of the threaded rod 3 (33) and the threaded rod 2 (321) are both threadedly connected to a slider (34).

5. The aluminum plate punching device capable of collecting aluminum shavings according to claim 4 is characterized in that: The bottom of the sliding block (34) is fixedly connected to a second limiting block (35), the outer wall of the second limiting block (35) is slidably connected to the top of the support frame (13), and the outer shape of the second limiting block (35) is T-shaped.

6. The aluminum plate punching device capable of collecting aluminum shavings according to claim 4, characterized in that: One end of the slider (34) is fixedly connected to a slide rod (36), the outer wall of the slide rod (36) is slidably connected to an electric slider (37), the bottom end of the electric slider (37) is fixedly connected to a telescopic cylinder (38), and the output end of the telescopic cylinder (38) is fixedly connected to a punch (39).

7. The aluminum plate punching device capable of collecting aluminum shavings according to claim 1, characterized in that: A box door (42) is inserted into the bottom of the right end of the collection box (41), and inclined plates (43) are fixedly connected to the tops of the left and right ends of the inner cavity of the collection box (41). A guide plate (44) is fixedly connected to the bottom of the collection box (41), and a support seat (45) is fixedly connected to the rear end of the collection box (41), and a motor three (46) is fixedly connected to the top of the support seat (45).

8. The aluminum plate punching device capable of collecting aluminum shavings according to claim 7, characterized in that: The output end of the motor three (46) is fixedly connected to a rotating shaft (463), the front end of the rotating shaft (463) is rotatably connected to the front end of the inner cavity of the collection box (41), the rear part of the outer wall of the rotating shaft (463) is fixedly connected to a driving gear (461), the outer wall of the driving gear (461) is meshed with a driven gear (462), and the outer wall of the rotating shaft (463) is fixedly connected to a crushing roller (47).

Citation Information

Patent Citations

  • Aluminum veneer punching device

    CN212917218U