A shearing structure
By designing the adjustment mechanism and waste suction mechanism in the shearing structure, the problems of unstable shearing quality and the influence of residue during the shearing process were solved, and a high-quality shearing effect was achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 苏州赛德克测控技术有限公司
- Filing Date
- 2025-07-25
- Publication Date
- 2026-06-16
AI Technical Summary
In existing shearing devices, the unstable movement of the upper and lower jaws of the shears during the shearing process leads to a decrease in shearing quality, and the shearing residue affects product quality.
A shearing structure was designed, which uses an adjustment mechanism to drive the lower shearing jaw into the through hole of the upper shearing jaw to perform the shearing action, and is equipped with a waste residue suction mechanism. The shearing quality is improved by adjusting the mechanism, and the waste residue suction mechanism removes the shearing residue.
This improved the shearing quality, reduced the impact of shearing residue on subsequent workpieces, and ensured the overall quality of the product.
Smart Images
Figure CN224359439U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the technical field of deduplication structures, and in particular to a shearing structure. Background Technology
[0002] After the workpiece undergoes a balancing test on the balancing machine, the tested workpiece is adjusted by removing or adding weight based on the test results.
[0003] Currently, Chinese patent CN215817847U discloses a manual weight-removing device for a brushless DC motor, including an upper handle, a lower handle, a return spring, upper scissor jaws, lower scissor jaws, a lever shaft, and a limiting stop. The return spring is located between the upper and lower handles, the upper scissor jaws are located at the front end of the lower handle, the lower scissor jaws are located at the front end of the upper handle, and the lever shaft connects the front ends of the upper and lower handles. The limiting stop is located at the front end of the upper handle and below the lever shaft. The limiting stop includes a first connecting block, a second connecting block, and a stop block, with the stop block located on the outer periphery of the front end of the lower scissor jaws.
[0004] When the aforementioned weight-removing device removes weight from the workpiece, the operator holds the upper and lower handles and moves them in opposite directions to allow the upper and lower jaws of the scissors to complete the cutting operation. If either the upper or lower handle shakes while the operator is moving it in opposite directions, the cutting position of the upper and lower jaws of the scissors will deviate, thereby reducing the cutting quality. Utility Model Content
[0005] To improve the shearing quality, this application provides a shearing structure.
[0006] This application provides a shearing structure, which adopts the following technical solution:
[0007] A shearing structure includes a shearing upper jaw, a shearing lower jaw, and an adjustment mechanism. The shearing upper jaw has a first through hole, and the shearing lower jaw is disposed on the shearing upper jaw through the adjustment mechanism. The shearing lower jaw can enter the first through hole of the shearing upper jaw to perform a shearing action.
[0008] By adopting the above technical solution, when shearing and removing weight from the workpiece, the upper shearing jaw remains stationary, while the adjusting mechanism drives the lower shearing jaw to move, causing the lower shearing jaw to enter the first through hole of the upper shearing jaw to achieve the shearing action; therefore, the shearing mechanism provided in this application can improve the shearing quality when removing weight in the shearing zone.
[0009] Optionally, the adjustment mechanism includes an adjustment shaft, a first adjustment block, and a first adjustment component. The adjustment shaft is rotatably mounted on the upper shear jaw, the first adjustment block is mounted on the adjustment shaft, and the lower shear jaw is mounted on the first adjustment block. The first adjustment component is mounted on the upper shear jaw and connected to the first adjustment block.
[0010] By adopting the above technical solution, the first adjustment component drives the first adjustment block to rotate on the adjustment shaft, and the first adjustment block will drive the shearing jaw movement.
[0011] Optionally, the first adjustment component includes an elastic reset member, a second adjustment block, and a third adjustment block. The second adjustment block is connected to the first adjustment block, and the third adjustment block is connected to the end of the second adjustment block away from the first adjustment block. One end of the elastic reset member is connected to the shearing jaw, and the other end is connected to the third adjustment block.
[0012] By adopting the above technical solution, the operator can manually or use other equipment to press down the third adjusting block, which drives the second adjusting block to move, and the second adjusting block will drive the first adjusting block to rotate. When the third adjusting block does not receive external force, the reset component is in normal condition. Under the action of the reset component, there is an area for placing the workpiece between the lower jaw of the scissors and the upper jaw of the scissors.
[0013] Optionally, the shearing jaw includes a first shearing block, a second shearing block, and a third shearing block. The first shearing block is connected to the first adjusting block, and the second shearing block is disposed on the first shearing block and connected to the first adjusting block. The third shearing block is disposed on the first shearing block. A first chamfer is formed on the side of the first adjusting block near the second shearing block, and a second chamfer is formed on the side of the second shearing block near the first adjusting block, communicating with the first chamfer. A transition fillet is formed on the side of the second shearing block away from the first adjusting block, and the transition fillet communicates with the third shearing block. A third chamfer is formed on the end of the first adjusting block near the first shearing block. The third shearing block can enter a first through hole.
[0014] By adopting the above technical solution, the first adjusting block drives the first shearing block to move, the first shearing block drives the third shearing block to move, and the third shearing block performs a shearing action on the workpiece.
[0015] Optionally, the third shearing block includes a first shearing head and a second shearing head, the first shearing head is connected to the first shearing block, and the transition fillet on the second shearing block communicates with the first shearing head. The second shearing head is located at the end of the first shearing head away from the first shearing block.
[0016] By adopting the above technical solution, the first shearing block drives the first shearing head to rotate, and the first shearing head drives the second shearing head to move, so that the first shearing head and the second shearing blade enter the first through hole of the shearing jaw to realize the shearing action.
[0017] Optionally, the cross-section of the second shear head is arc-shaped, and the cross-section of the second shear head gradually decreases in the direction away from the second shear block.
[0018] By adopting the above technical solution, since the cross-section of the second shear head gradually decreases in the direction away from the second shear block, the phenomenon of the end of the second shear head away from the second shear block touching the workpiece is reduced when the second shear head performs the shearing action on the workpiece.
[0019] Optionally, the second shear head is provided with an extension mechanism, the extension mechanism including an extension shear head, the extension shear head being disposed at the end of the second shear head away from the first shear head, the cross-sectional area of the extension shear head gradually decreasing in the direction away from the second shear block, the maximum cross-section of the extension shear head being smaller than the maximum cross-section of the second shear head, and the extension shear head and the second shear head having a rounded transition; the extension shear head can enter the first through hole.
[0020] By adopting the above technical solution, the maximum cross-section of the extended shear head is smaller than the maximum cross-section of the second shear head. In this way, when there is not much shearing required, the extended shear blade can shear the workpiece.
[0021] Optionally, multiple extended shear heads are provided, with adjacent extended shear heads connected together, the extended shear head closer to the second shear head connected to the second shear head, and the largest cross-section of the extended shear head farther from the second shear head being smaller than the largest cross-section of the extended shear head closer to the second shear head.
[0022] By adopting the above technical solution, the multiple extended shearing heads can be selected to shear the workpiece from a suitable number of extended shearing blocks as needed, thereby providing applicability.
[0023] Optionally, the elastic reset member includes a spring, a first placement groove is provided on the shearing jaw, a second placement groove is provided on the third adjusting block, and one end of the spring is located in the first placement groove and the other end is located in the second placement groove.
[0024] By adopting the above technical solution, when pressure is applied to the third adjusting block to make the third adjusting block move, the spring will be compressed. Since one end of the spring is located in the first placement groove and the other end is located in the second placement groove, the phenomenon of excessive spring torsion can be reduced when the spring is compressed.
[0025] Optionally, the shearing jaw is provided with a waste suction mechanism, which includes a suction block, a fixing component, and a suction assembly. The suction block has a suction hole, which abuts against the shearing jaw, and the suction hole communicates with the first through hole. The fixing component is disposed on the shearing jaw and connected to the suction block. The suction assembly is connected to the suction block and communicates with the suction hole.
[0026] By adopting the above technical solution, when the shearing jaw shears the workpiece, the sheared residue enters the suction hole of the suction block through the first through hole on the shearing jaw, and is finally transferred out by the suction assembly; the waste residue suction mechanism can suction the sheared residue, reduce the impact of residue on the subsequent shearing of the workpiece, and thus ensure product quality.
[0027] In summary, this application includes at least one of the following beneficial technical effects:
[0028] 1. The shearing mechanism provided in this application can improve the shearing quality when removing excess material from the shearing zone;
[0029] 2. The waste residue suction mechanism can suck up the sheared residue, reducing the impact of residue on the subsequent shearing of workpieces and thus ensuring product quality. Attached Figure Description
[0030] Figure 1 This is a schematic diagram of the shearing structure in Embodiment 1 of this application;
[0031] Figure 2 This is a schematic diagram of the adjustment mechanism in Embodiment 1 of this application;
[0032] Figure 3 This is a schematic diagram of the adjusting mechanism in Embodiment 1 of this application;
[0033] Figure 4 This is a schematic diagram of the structure of the first adjustment component in Embodiment 1 of this application;
[0034] Figure 5 This is a schematic diagram of the shearing jaw structure in Embodiment 1 of this application;
[0035] Figure 6 This is a schematic diagram of the waste residue suction mechanism in Embodiment 1 of this application;
[0036] Figure 7 This is a schematic diagram of the extended shear head in Embodiment 2 of this application.
[0037] Reference numerals: 1. Upper shearing jaw; 11. First through hole; 12. First placement groove; 2. Lower shearing jaw; 21. First shearing block; 22. Second shearing block; 221. Second chamfer; 222. Transition fillet; 23. Third shearing block; 231. First shearing head; 232. Second shearing head; 3. Adjustment mechanism; 31. Adjustment shaft; 32. First adjustment block; 321. First chamfer; 322. Third chamfer; 33. First adjustment assembly; 331. Elastic reset component; 332. Second adjustment block; 333. Third adjustment block; 3331. Second placement groove; 4. Extended shearing head 5. Waste residue suction mechanism; 51. Suction block; 511. Suction hole; 52. Fixing component; 521. Fixing block; 5211. Fixing hole; 5212. Deformation hole; 522. Fixing bolt; 6. Adjustment mechanism; 61. Extension block; 611. Third placement slot; 62. Guide rail; 63. Sliding seat; 64. Sliding block; 65. Adjusting block; 66. Pressure roller; 67. Second adjustment component; 671. First connecting block; 672. Second connecting block; 673. Second cylinder; 68. Positioning sleeve; 69. Mounting bolt; 7. Moving mechanism; 71. First cylinder; 72. Moving block. Detailed Implementation
[0038] The following is in conjunction with the appendix Figure 1-7 This application will be described in further detail.
[0039] This application discloses a shearing structure.
[0040] Example 1
[0041] refer to Figure 1 and Figure 2 A shearing structure includes a moving mechanism 7, an adjusting mechanism 6 on the moving mechanism 7, a shearing upper jaw 1 on the adjusting mechanism 6, an adjusting mechanism 3 on the shearing upper jaw 1, and a shearing lower jaw 2 connected to the adjusting mechanism 3.
[0042] refer to Figure 1 and Figure 2 The moving mechanism 7 includes a first cylinder 71, and a moving block 72 is connected to the piston rod of the first cylinder 71; the moving block 72 is provided with a positioning groove.
[0043] The adjusting mechanism 6 includes an extension block 61 that abuts against the moving block 72. The extension block 61 has a second through hole and a positioning sleeve 68. The positioning sleeve 68 passes through the second through hole on the extension block 61 and engages with the positioning groove on the moving block 72. The vertical cross-section of the positioning sleeve 68 is T-shaped. The end of the positioning sleeve 68 away from the moving block 72 has a third through hole. The extension block 61 has a fourth through hole. The moving block 72 has a first threaded hole. The positioning sleeve 68 has a mounting bolt 69. The mounting bolt 69 passes through the third through hole on the positioning sleeve 68 and the fourth through hole on the extension block 61 and is threadedly connected to the first threaded hole on the moving block 72.
[0044] A third placement groove 611 is provided on the side of the extension block 61 away from the moving block 72. A guide rail 62 is fixedly connected to the bottom wall of the third placement groove 611. A sliding seat 63 is slidably connected to the guide rail 62. A sliding block 64 is bolted to the sliding seat 63. An adjustment block 65 is integrally provided on the sliding block 64. A pressure roller 66 is rotatably connected to the adjustment block 65. An extension block 61 is provided with a second adjustment component 67, which includes a second cylinder 673 bolted to the extension block 61. A first connecting block 671 is connected to the piston rod of the second cylinder 673. A second connecting block 672 is integrally provided at the end of the first connecting block 671 away from the second cylinder 673. The vertical cross-section of the second connecting block 672 is larger than that of the first connecting block 671. The second connecting block 672 and the first connecting block 671 form a T-shaped structure. A second connecting groove is provided on the sliding block 64 to engage with the second connecting block 672. A first connecting groove is provided on the sliding block 64 to communicate with the second connecting groove. The end of the first connecting block 671 near the second connecting block 672 is located in the first connecting groove.
[0045] refer to Figure 2 , Figure 3 and Figure 4 The shearing jaw 1 is fixedly connected to the end of the extension block 61 away from the second cylinder 673 by bolts. The end of the shearing jaw 1 away from the second cylinder 673 is located outside the extension block 61. A first through hole 11 is opened on the shearing jaw 1 located outside the extension block 61. The guide rail 62 is located between the second cylinder 673 and the shearing jaw 1.
[0046] The adjustment mechanism 3 includes an adjustment shaft 31 rotatably connected to the shearing jaw 1. A portion of the adjustment shaft 31 is located within the first through hole 11 of the shearing jaw 1. A first adjustment block 32 is fixedly connected to the adjustment shaft 31 located within the first through hole 11. A first adjustment component 33 is provided on the first adjustment block 32. The first adjustment component 33 includes a second adjustment block 332 integrally formed with the first adjustment block 32. A third adjustment block 333 is integrally formed at the end of the second adjustment block 332 away from the first adjustment block 32. The third adjustment block is located above the shearing jaw 1. An clearance hole is provided on the adjustment block 65. The third adjustment block 333 can pass through the clearance hole, and the pressure roller 66 abuts against the side of the third adjustment block 333 away from the shearing jaw 1. The first adjustment block 32 and the third adjustment block 333 are located on both sides of the second adjustment block 332, and the angles between the first adjustment block 32 and the second adjustment block 332 and between the third adjustment block 333 and the second adjustment block 332 are both obtuse angles. The shearing jaw 1 has a first placement groove 12 on the side near the third adjusting block 333, and the third adjusting block 333 has a second placement groove 3331 on the side near the shearing jaw 1. A reset component, including a spring, is provided on the shearing jaw 1. One end of the spring is located in the first placement groove 12 of the shearing jaw 1, and the other end is located in the second placement groove 3331 of the third adjusting block 333. When the spring is in its normal state, the first adjusting block 32 is tilted relative to the shearing jaw 1.
[0047] refer to Figure 4 and Figure 5 The first adjustment block 32 has a first chamfer 321 on the side away from the extension block 61.
[0048] The shearing jaw 2 includes a first shearing block 21 integrally formed with the first adjusting block 32. The first shearing block 21 is parallel to the first adjusting block 32 and is located at the end of the first adjusting block 32 away from the second adjusting block 332. A second shearing block 22 is integrally formed on the side of the first adjusting block 32 away from the extension block 61. The second shearing block 22 is integrally formed with the first adjusting block 32. The end of the second shearing block 22 near the first adjusting block 32 forms a second chamfer 221 that communicates with the first chamfer 321. The first chamfer 321 on the first adjusting block 32 and the chamfer on the second shearing block 22 are located in the same plane. The end of the second adjusting block 332 away from the first adjusting block 32 forms a transition fillet 222. The end of the first adjusting block 32 near the first shearing block 21 and the second shearing block 22 forms a third chamfer 322.
[0049] A third shearing block 23 is provided on the first shearing block 21. The third shearing block 23 includes a first shearing head 231 integrally formed with the first shearing block 21. The first shearing head 231 is integrally formed with the first adjusting block 32 and located at the end of the first shearing block 21 away from the first adjusting block 32. The transition fillet 222 on the second shearing block 22 is connected to the end of the first shearing head 231 near the first shearing block 21. A second shearing head 232 is integrally formed at the end of the first shearing head 231 away from the first shearing block 21. The second shearing head 232 is half of a frustum. The cross-section of the second shearing head 232 is arc-shaped and gradually decreases in size towards the direction away from the second shearing block 22. The end face of the second shearing head 232 near the second shearing block 22 coincides with the end face of the first shearing head 231 near the second shearing block 22, and the end face of the second shearing head 232 away from the second shearing block 22 coincides with the end face of the first shearing head 231 away from the second shearing block 22.
[0050] When the spring is in its normal state, the first shear block 21, the first shear head 231 and the second shear head 232 are located below the shear jaw 1, and the first shear head 231 and the second shear head 232 can enter the first through hole 11 of the shear jaw 1.
[0051] refer to Figure 1 and Figure 6 The shearing jaw 1 is equipped with a waste suction mechanism 5, which includes a suction block 51 that abuts against the shearing jaw 1. The suction block 51 is located on the side of the shearing jaw 1 away from the extension block 61. The suction block 51 has a suction hole 511 that communicates with the first through hole 11 on the shearing jaw 1. The suction block 51 is equipped with a fixing component 52, which includes a fixing block 521. The fixing block 521 has a fixing hole 5211 for placing the suction block 51 and a deformation hole 5212 that communicates with the fixing hole 5211. The fixing block 521 has a fifth through hole, and the shearing jaw 1 has a second threaded hole. The fixing block 521 is equipped with a fixing bolt 522, which passes through the fifth through hole on the fixing block 521 and is threadedly connected to the second threaded hole on the shearing jaw 1. The suction block 51 is equipped with a suction assembly, which includes a suction tube connected to the suction block 51. The end of the suction tube away from the suction block 51 is connected to a collection box, and a negative pressure pump is placed inside the collection box.
[0052] The suction block 51 is placed into the fixing hole 5211 of the fixing block 521, and then both the fixing block 521 and the suction block 51 abut against the shearing jaw 1. The suction hole 511 on the suction block 51 communicates with the first through hole 11 on the shearing jaw 1, and the fifth through hole on the fixing block 521 communicates with the second threaded hole on the shearing jaw 1. Then, the fixing bolt 522 passes through the fifth through hole on the fixing block 521 and is threadedly connected to the second threaded hole on the shearing jaw 1, thereby fixing the fixing block 521 and the suction block 51 to the shearing jaw 1. When the fixing block 521 is fixed to the shearing jaw 1, the deformation hole 5212 on the fixing block 521 will deform, so that the suction block 51 is stably fixed to the shearing jaw 1.
[0053] The implementation principle of Embodiment 1 of this application is as follows: Initially, the spring is in the normal state, that is, the first shear head 231 and the second shear head 232 are located below the shear jaw 1. The first cylinder 71 is activated, and the piston rod of the first cylinder 71 drives the moving block 72 to move. The moving block 72 drives the extension block 61 to move, and the extension block 61 drives the shear jaw 1 to move, so that the workpiece that needs to be sheared and deweighted is located between the second shear head 232 and the shear jaw 1; or the workpiece that needs to be sheared and deweighted is moved so that the workpiece that needs to be sheared and deweighted is located between the second shear head 232 and the shear jaw 1.
[0054] When the workpiece that needs to be sheared and deweighted is located between the second shear head 232 and the shearing jaw 1, the second cylinder 673 is activated. The piston rod of the second cylinder 673 drives the first connecting block 671 to move towards the shearing jaw 1. The second connecting block 672 on the first connecting block 671 drives the sliding block 64 to move towards the shearing jaw 1. The sliding block 64 drives the sliding seat 63 to move on the guide rail 62. When the sliding block 64 moves towards the shearing jaw 1, it drives the adjusting block 65 to move. The pressure roller 66 on the adjusting block 65 squeezes the side wall of the third adjusting block 333 away from the shearing jaw 1, causing the third adjusting block 333 to move. The third adjusting block 333 drives the second adjusting block 332 to move, the second adjusting block 332 drives the first adjusting block 32 to move, and the first adjusting block 32 drives the first shear head 231 to move. The first shear head 231 drives the first shear head 231 and the second shear head 232 to move towards the shearing jaw 1, so that the first shear head 231 and the second shear head 232 enter the first through hole 11 of the shearing jaw 1, thereby realizing the shearing and weight reduction of the workpiece. When the first shear head 231 and the second shear head 232 shear the workpiece to reduce weight, the spring is compressed, and the end of the third adjusting block 333 away from the second adjusting block 332 passes through the clearance hole on the adjusting block 65.
[0055] Example 2
[0056] refer to Figure 7The difference from Embodiment 1 is that an extension mechanism is provided at the end of the second shear head 232 away from the first shear head 231. The extension mechanism includes multiple extension shear heads 4, with two adjacent extension shear heads 4 connected together. The extension shear head 4 near the end of the second shear head 232 is connected to the second shear head 232. Each extension shear head 4 is a semi-frustum shape. The end face of all extension shear heads 4 near the end of the second shear block 22 coincides with the end face of the second shear head 232 near the end of the second shear block 22. The end face of all extension shear heads 4 away from the end of the second shear block 22 coincides with the end face of the second shear head 232 away from the end of the second shear block 22. Furthermore, the extension shear head 4 near the end of the second shear head 232 and the adjacent extension shear heads 4 are all connected by an arc transition.
[0057] The maximum cross-section of the extended shear head 4, which is farther away from the second shear head 232, is smaller than the maximum cross-section of the extended shear head 4, which is closer to the second shear head 232. The maximum cross-section of the extended shear head 4, which is closer to the second shear head 232, is smaller than the maximum cross-section of the second shear head 232.
[0058] All the extended shear heads 4 can enter the first through hole 11 of the shear jaw 1.
[0059] The implementation principle of Embodiment 2 of this application is as follows: according to the weight that the workpiece needs to be cut, the extended shearing head 4 at different positions can cut the workpiece to remove weight.
[0060] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.
Claims
1. A shearing structure, characterized in that, It includes a shearing upper jaw (1), a shearing lower jaw (2) and an adjustment mechanism (3). The shearing upper jaw (1) has a first through hole (11). The shearing lower jaw (2) is set on the shearing upper jaw (1) through the adjustment mechanism (3), and the shearing lower jaw (2) can enter the first through hole (11) of the shearing upper jaw (1) to realize the shearing action.
2. The shearing structure according to claim 1, characterized in that, The adjustment mechanism (3) includes an adjustment shaft (31), a first adjustment block (32), and a first adjustment component (33). The adjustment shaft (31) is rotatably mounted on the shearing upper jaw (1), the first adjustment block (32) is mounted on the adjustment shaft (31), and the shearing lower jaw (2) is mounted on the first adjustment block (32). The first adjustment component (33) is mounted on the shearing upper jaw (1) and connected to the first adjustment block (32).
3. A shearing structure according to claim 2, characterized in that, The first adjustment component (33) includes an elastic reset member (331), a second adjustment block (332) and a third adjustment block (333). The second adjustment block (332) is connected to the first adjustment block (32), and the third adjustment block (333) is connected to the end of the second adjustment block (332) away from the first adjustment block (32). One end of the elastic reset member (331) is connected to the shearing jaw (1) and the other end is connected to the third adjustment block (333).
4. A shearing structure according to claim 2, characterized in that, The shearing jaw (2) includes a first shearing block (21), a second shearing block (22), and a third shearing block (23). The first shearing block (21) is connected to the first adjusting block (32). The second shearing block (22) is disposed on the first shearing block (21) and connected to the first adjusting block (32). The third shearing block (23) is disposed on the first shearing block (21). The first adjusting block (32) has a first chamfer (321) on the side near the second shearing block (22). The cutting block (22) has a second chamfer (221) that communicates with the first chamfer (321) on the side near the first adjusting block (32), and a transition fillet (222) is formed on the side away from the first adjusting block (32), which communicates with the third cutting block (23); the first adjusting block (32) has a third chamfer (322) at the end near the first cutting block (21); the third cutting block (23) can enter the first through hole (11).
5. A shearing structure according to claim 4, characterized in that, The third shearing block (23) includes a first shearing head (231) and a second shearing head (232). The first shearing head (231) is connected to the first shearing block (21), and the transition fillet (222) on the second shearing block (22) is connected to the first shearing head (231). The second shearing head (232) is located at the end of the first shearing head (231) away from the first shearing block (21).
6. A shearing structure according to claim 5, characterized in that, The second shear head (232) has an arc-shaped cross-section, and the cross-section of the second shear head (232) gradually decreases in size as it moves away from the second shear block (22).
7. A shearing structure according to claim 5, characterized in that, The second shear head (232) is provided with an extension mechanism, which includes an extension shear head (4). The extension shear head (4) is located at the end of the second shear head (232) away from the first shear head (231). The cross-sectional area of the extension shear head (4) gradually decreases in the direction away from the second shear block (22). The maximum cross-section of the extension shear head (4) is smaller than the maximum cross-section of the second shear head (232), and the extension shear head (4) and the second shear head (232) are connected by an arc. The extension shear head (4) can enter the first through hole (11).
8. A shearing structure according to claim 7, characterized in that, Multiple extended shear heads (4) are provided, with two adjacent extended shear heads (4) connected together. The extended shear head (4) closer to the second shear head (232) is connected to the second shear head (232). The largest cross-section of the extended shear head (4) farther from the second shear head (232) is smaller than the largest cross-section of the extended shear head (4) closer to the second shear head (232).
9. A shearing structure according to claim 3, characterized in that, The elastic reset member (331) includes a spring. The shearing jaw (1) has a first placement groove (12) and the third adjusting block (333) has a second placement groove (3331). One end of the spring is located in the first placement groove (12) and the other end is located in the second placement groove (3331).
10. A shearing structure according to claim 1, characterized in that, The shearing jaw (1) is provided with a waste suction mechanism (5). The waste suction mechanism (5) includes a suction block (51), a fixing component (52), and a suction component. The suction block (51) has a suction hole (511). The suction block (51) abuts against the shearing jaw (1), and the suction hole (511) communicates with the first through hole (11). The fixing component (52) is provided on the shearing jaw (1) and connected to the suction block (51). The suction component is connected to the suction block (51) and communicates with the suction hole (511).