Pin cutting device

Abstract

The utility model relates to the technical field of electronic component processing, in particular to a pin cutting device which comprises a mounting base, a cutting mechanism and an angle adjusting mechanism. The angle adjusting mechanism comprises an angle adjusting driving part, a first transmission gear, a second transmission gear, a mounting frame and a connecting shaft; the angle adjusting driving part is arranged on the mounting seat; one end of the connecting shaft is movably connected with the second transmission gear, and the other end of the connecting shaft is connected with the mounting seat; the first transmission gear is arranged at the output end of the angle adjusting driving part, the second transmission gear is meshed with the first transmission gear, the second transmission gear is fixedly connected with the mounting frame, and the cutting mechanism is arranged on the mounting frame. Due to the fact that the angle adjusting driving mechanism can drive the cutting mechanism to rotate, the cutting angle of the cutting mechanism adapts to the deflection angle of the electronic element pin, cutting dead angles are reduced, and the consistency of the length of the electronic element pin after pin cutting treatment is guaranteed.

Description

Technical Field

[0001] The present application relates to the technical field of electronic component processing, and more specifically to a pin cutting device. Background Art

[0002] After the electronic components are processed, in order to facilitate the installation of the electronic components on the circuit, the pins of the electronic components need to be bent, and then the excess parts of the pins need to be cut off, so that the pin length of the electronic components after cutting is specific. In the prior art, the cutter angle in the cutting mechanism is fixed, and the pins are usually cut at a fixed angle in the horizontal or vertical direction. However, since the bending angles of the pins of the electronic components are not exactly the same, when the fixed angle is used for cutting, the cutting angle is not good, or there is a problem of cutting dead angles, resulting in inconsistent lengths of the pins of the electronic components after the pin cutting process, affecting the quality of the electronic components.

[0003] Therefore, there is an urgent need for a device that can improve the consistency of the length of the pins after cutting. Utility Model Content

[0004] The present application provides a pin cutting device, which ensures the consistency of the length of the pins of electronic components after cutting by adjusting the cutting angle of the cutting piece.

[0005] The present application provides a pin cutting device, comprising a mounting seat, a cutting mechanism and an angle adjustment mechanism, wherein the cutting mechanism is used to cut the pins of electronic components; the angle adjustment mechanism comprises an angle adjustment driving member, a first transmission gear, a second transmission gear, a mounting frame and a connecting shaft; the angle adjustment driving member is arranged on the mounting seat; one end of the connecting shaft is movably connected to the second transmission gear, and the other end is connected to the mounting seat; the first transmission gear is arranged at the output end of the angle adjustment driving member, the second transmission gear is meshed with the first transmission gear, and the second transmission gear is fixedly connected to the mounting frame, and the cutting mechanism is arranged on the mounting frame; the angle adjustment driving member drives the first transmission gear to rotate, which can drive the second transmission gear to rotate around the connecting shaft and drive the mounting frame to rotate, so that the cutting mechanism rotates synchronously to adjust the cutting angle of the cutting member.

[0006] In one embodiment, the number of teeth of the second transmission gear is greater than the number of teeth of the first transmission gear.

[0007] In one embodiment, the mounting frame includes a first mounting member, a second mounting member and a connecting member, and the connecting member is arranged between the first mounting member and the second mounting member; the second transmission gear is fixedly connected to the first mounting member, and the cutting mechanism is arranged on the second mounting member.

[0008] In one embodiment, a bearing is provided in the second transmission gear, and the bearing has an axial cavity matching the connecting shaft, and the connecting shaft is inserted into the axial cavity so that the second transmission gear is movably connected to the connecting shaft.

[0009] In one embodiment, the pin cutting device also includes a spacing adjustment mechanism; the spacing adjustment mechanism is connected to the mounting seat and is used to drive the mounting seat to perform linear reciprocating motion in a direction perpendicular to the connecting axis to adjust the distance between the cutting mechanism and the pins of the electronic component in a direction perpendicular to the connecting axis.

[0010] In one embodiment, the spacing adjustment mechanism includes a spacing adjustment drive and a base, the base is fixed at a preset position, and the spacing adjustment drive is arranged on the base; the output end of the spacing adjustment drive is connected to the mounting seat, and is used to drive the mounting seat to perform linear reciprocating motion in a direction perpendicular to the connecting axis.

[0011] In one embodiment, the spacing adjustment drive element includes a linear motor; and / or the angle adjustment drive element includes a rotary motor.

[0012] In one embodiment, the cutting mechanism includes a cutting drive and a cutting member, wherein the cutting drive is disposed on the mounting frame, and the cutting member is movably disposed on the mounting frame. The cutting drive is connected to the cutting member, and the cutting drive can drive the cutting member to perform linear reciprocating motion in a direction parallel to the connecting axis.

[0013] In one embodiment, the cutting mechanism also includes a cutting transmission assembly, which is arranged between the cutting drive and the cutting member, and the cutting transmission assembly is connected to the output end of the cutting drive; the cutting drive can drive the cutting transmission assembly to rotate, so that the cutting transmission assembly drives the cutting member to perform linear reciprocating motion in a direction parallel to the connecting axis.

[0014] In one embodiment, the cutting transmission assembly includes a turntable and a connecting rod, the connecting rod having a first end and a second end, the first end and the second end are relatively arranged along the length direction of the connecting rod; the first end is movably connected to the turntable, the second end is movably connected to the cutting member, the output end of the cutting drive member is connected to the turntable, and the cutting drive member can drive the turntable to rotate, so as to drive the cutting member to perform linear reciprocating motion in a direction parallel to the connecting axis through the connecting rod.

[0015] According to the pin cutting device in the above embodiment, it includes a mounting seat, a cutting mechanism and an angle adjustment mechanism. The angle adjustment mechanism includes an angle adjustment drive assembly, a first transmission gear, a second transmission gear and a mounting frame. Since the second transmission gear can rotate under the action of the angle adjustment drive assembly and the first transmission gear, it drives the mounting frame to rotate, so that the cutting mechanism rotates synchronously, so that the cutting angle of the cutting mechanism can be adjusted, so that the cutting angle of the cutting piece adapts to the deflection angle of the electronic component pin, reduces the cutting dead angle, and thus ensures the consistency of the pin length on the electronic component after the pin cutting process. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic diagram of the structure of a pin cutting device cutting an electronic component in one embodiment;

[0017] Figure 2 A structural stereogram of a pin cutting device at one angle in an embodiment;

[0018] Figure 3 A structural stereogram of a pin cutting device in another embodiment from another angle;

[0019] Figure 4 A structural front view of a pin cutting device in one embodiment;

[0020] Figure 5 for Figure 4 Schematic diagram of the cross section of AA.

[0021] Wherein: 100, mounting seat; 200, cutting mechanism; 210, cutting drive member; 220, cutting member; 230, cutting transmission assembly; 231, turntable; 232, connecting rod; 2321, first end; 2322, second end; 240, cutting platform; 241, guide groove; 250, bearing seat; 300, angle adjustment mechanism; 310, angle adjustment drive member; 320, first transmission gear; 330, second transmission gear; 340, mounting frame; 341, first mounting member; 342, second mounting member; 343, connecting member; 350, connecting shaft; 360, bearing; 361, shaft cavity; 400, spacing adjustment mechanism; 410, spacing adjustment drive member; 420, base; 500, transmission mechanism; 600, electronic components. DETAILED DESCRIPTION

[0022] The present application is further described in detail below by specific embodiments in conjunction with the accompanying drawings. Wherein similar elements in different embodiments adopt associated similar element numbers. In the following embodiments, many detailed descriptions are intended to enable the present application to be better understood. However, those skilled in the art can easily recognize that some of the features can be omitted in different situations, or can be replaced by other elements, materials, and methods. In some cases, some operations related to the present application are not shown or described in the specification, in order to avoid the core part of the present application being overwhelmed by too much description, and for those skilled in the art, it is not necessary to describe these related operations in detail, and they can fully understand the related operations based on the description in the specification and the general technical knowledge in the art.

[0023] In addition, the features, operations or characteristics described in the specification can be combined in any appropriate manner to form various implementations, and the operation steps involved in each embodiment can also be replaced or adjusted in a sequence in a manner that is obvious to those skilled in the art. Therefore, the specification and drawings are only for the purpose of clearly describing a certain embodiment and do not mean that the composition and / or sequence are necessary.

[0024] The serial numbers of the components in this document, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned in this application, unless otherwise specified, include direct and indirect connections (couplings).

[0025] See also Figures 1 to 5 The present application provides a pin cutting device, including a mounting seat 100, a cutting mechanism 200 and an angle adjustment mechanism 300. The cutting mechanism 200 is used to cut the pins of the electronic component 600. The angle adjustment mechanism 300 includes an angle adjustment driving member 310, a first transmission gear 320, a second transmission gear 330, a mounting frame 340 and a connecting shaft 350. The angle adjustment driving member 310 is arranged on the mounting seat 100. One end of the connecting shaft 350 is movably connected to the second transmission gear 330, and the other end is connected to the mounting seat 100. The first transmission gear 320 is connected to the second transmission gear 330. The gear 320 is arranged at the output end of the angle adjustment driving member 310, the second transmission gear 330 is meshed with the first transmission gear 320, and the second transmission gear 330 is fixedly connected to the mounting frame 340, and the cutting mechanism 200 is arranged on the mounting frame 340; the angle adjustment driving member 310 drives the first transmission gear 320 to rotate, which can drive the second transmission gear 330 to rotate around the connecting shaft 350, and drive the mounting frame 340 to rotate, so that the cutting mechanism 200 rotates synchronously, so as to adjust the cutting angle of the cutting mechanism 200, and the connecting shaft 350 is rotated along the Figure 2 The X-direction is extended, that is, the cutting direction of the adjustment mechanism 200 is Figure 2 The X direction in .

[0026] The electronic components 600 are generally transferred to the cutting mechanism 200 by the transfer mechanism 500, and the plurality of electronic components 600 are transferred along the transfer direction ( Figure 1 The electronic components 600 are arranged at equal intervals in the A direction. Generally, the cutting mechanism 200 contacts the electronic components 600 at the same angle, that is, the pins of the electronic components 600 are cut at the same angle. However, since the pins of the electronic components 600 may have different bending angles during processing, the pin lengths of the electronic components 600 cut from the same angle are inconsistent, which affects the quality and subsequent use of the electronic components 600. The transmission mechanism 500 includes a linear motor or a rotary motor and a lead screw. Multiple electronic components 600 are connected to the output end of the linear motor, or are movably arranged on the lead screw.

[0027] The angle adjustment mechanism 300 can be easily configured to adjust the contact angle between the cutting mechanism 200 and the pins of the electronic component 600, thereby adapting to the bending angle of the pins of the electronic component 600, so that the pin lengths of the multiple electronic components 600 after cutting are consistent.

[0028] Specifically, since the output end of the angle adjustment driving member 310 is connected to the first transmission gear 320, when the angle adjustment driving member 310 starts to rotate, the first transmission gear 320 rotates with the angle adjustment driving member 310. Since the first transmission gear 320 and the second transmission gear 330 are meshed, and the second transmission gear 330 is rotatably arranged between the mounting seat 100 and the mounting frame 340, it can rotate with the first transmission gear 320, thereby driving the mounting frame 340 connected thereto to rotate. Since the cutting mechanism 200 is arranged on the mounting frame 340, the cutting mechanism 200 rotates synchronously, thereby achieving the purpose of the cutting mechanism 200 cutting the pins of the electronic component 600 at different angles to ensure that the pin lengths of the electronic component 600 after final cutting are consistent.

[0029] In one embodiment, in order to improve the accuracy of angle adjustment, the number of teeth of the second transmission gear 330 is greater than the number of teeth of the first transmission gear 320. In the gear transmission, the second transmission gear 330 serves as a passive gear, and the first transmission gear 320 serves as an active gear. The number of teeth of the active gear is less than that of the passive gear, and the gear ratio is less than 1, and the transmission ratio is greater than 1, which is a reduction transmission. When the first transmission gear 320 rotates one circle, the number of circles of the second transmission gear 330 is less than 1. The gear ratio can be used to achieve fine control of the rotation angle of the second transmission gear 330, thereby achieving fine adjustment of the cutting angle.

[0030] In order to effectively ensure the accuracy of the angle adjustment, an image acquisition device (not shown in the figure) is further provided, through which the contact between the cutting mechanism 200 and the pins of the electronic component 600 (including the spacing, angle, etc.) can be viewed in real time to determine whether the angle adjustment is in place. The image acquisition device may include a camera.

[0031] In one embodiment, the mounting frame 340 includes a first mounting member 341, a second mounting member 342 and a connecting member 343, wherein the connecting member 343 is disposed between the first mounting member 341 and the second mounting member 342; the second transmission gear 330 is fixedly connected to the first mounting member 341, and the cutting mechanism 200 is disposed on the second mounting member 342. The connecting member 343 serves as a supporting structure between the first mounting member 341 and the second mounting member 342, and cooperates with the first mounting member 341 and the second mounting member 342 to form the mounting frame 340. The arrangement of the connecting member 343 forms a space for installing the cutting mechanism 200 between the first mounting member 341 and the second mounting member 342, so that when the mounting frame 340 rotates, the cutting mechanism 200 can rotate accordingly. The second transmission gear 330 is fixedly connected to the first mounting member 341, so that the mounting frame 340 can rotate along with the second transmission gear 330.

[0032] Furthermore, in order to make the structure of the entire device more compact, the second transmission gear 330, the first mounting member 341 and the second mounting member 342 are arranged in sequence from top to bottom, and the mounting seat 100 is also arranged above the second transmission gear 330, and the connecting shaft 350 is vertically arranged between the mounting seat 100 and the second transmission gear 330.

[0033] Of course, in other embodiments, the second transmission gear 330 , the first mounting member 341 , and the second mounting member 342 may also be arranged sequentially from left to right.

[0034] In one embodiment, the first mounting member 341 and the second mounting member 342 are plate-like structures, and the connecting member 343 is a rod-like or bar-like structure, so that the first mounting member 341, the second mounting member 342 and the connecting member 343 form a frame structure with space for installing the cutting mechanism 200, which can reasonably reduce the weight of the entire pin cutting device and facilitate the assembly of the pin cutting device with the conveying mechanism 500 and other equipment.

[0035] In one embodiment, see Figure 5In order to effectively ensure that the second transmission gear 330 rotates smoothly and stably, a bearing 360 is provided in the second transmission gear 330. The bearing 360 has an axial cavity 361 matching the connecting shaft 350. The connecting shaft 350 is inserted into the axial cavity 361 so that the second transmission gear 330 is movably connected to the connecting shaft 350, thereby effectively supporting the second transmission gear 330, the mounting frame 340 and the cutting mechanism 200 without affecting the adjustment of the angle of the cutting mechanism 200.

[0036] In one embodiment, the connecting shaft 350 and the mounting seat 100 are fixed by flange connection. The flange connection structure is a mature technology in the fixing of mechanical equipment, and the material is easily available, which can save the production cost of the pin cutting device.

[0037] In one embodiment, for electronic components 600 of different models or batches, the pin lengths are different, and the corresponding pin cutting lengths or remaining lengths (the length remaining after cutting) of the electronic components 600 are required to be different. In order to adapt to this situation, the pin cutting device also includes a spacing adjustment mechanism 400, and the spacing adjustment mechanism 400 is connected to the mounting seat 100, and is used to drive the mounting seat 100 to perform linear reciprocating motion in a direction perpendicular to the connecting axis 350, so as to adjust the distance between the cutting mechanism 200 and the pins of the electronic component 600 in the direction perpendicular to the connecting axis 350, thereby being able to adapt to different cutting lengths or remaining lengths, thereby broadening the scope of application of the pin cutting device.

[0038] In one embodiment, the spacing adjustment mechanism 400 includes a spacing adjustment driving member 410 and a base 420, the base 420 is fixed at a preset position, and the spacing adjustment driving member 410 is disposed on the base 420; the output end of the spacing adjustment driving member 410 is connected to the mounting seat 100, and is used to drive the mounting seat 100 to move in a direction perpendicular to the connecting axis 350 ( Figure 2 Y direction) for linear reciprocating motion.

[0039] In one embodiment, the spacing adjustment driving member 410 includes a linear motor, and the linear motor is used to realize the linear reciprocating motion of the mounting base 100 to adjust the distance between the cutting mechanism 200 and the pins of the electronic component 600 .

[0040] Of course, in other embodiments, the spacing adjustment driving member 410 may also be a linear cylinder or other structures that can improve the linear driving force.

[0041] In one embodiment, the angle adjustment driving member 310 includes a rotary motor, and the rotary motor is used to increase the driving force for the first transmission gear 320, the second transmission gear 330 and the cutting mechanism 200 to rotate.

[0042] In one embodiment, the cutting mechanism 200 includes a cutting drive 210 and a cutting member 220. The cutting drive 210 is disposed on a mounting frame 340, and the cutting member 220 is movably disposed on the mounting frame 340. The cutting drive 210 and the cutting member 220 are connected. The cutting drive 210 can drive the cutting member 220 to move in a direction parallel to the connecting axis 350 ( Figure 2 X direction) for linear reciprocating motion.

[0043] In one embodiment, the cutting drive member 210 includes a rotating motor, the cutting member 220 is a cutting knife, and the cutting mechanism 200 also includes a cutting transmission assembly 230, which is arranged between the cutting drive member 210 and the cutting member 220, and the cutting transmission assembly 230 is connected to the output end of the cutting drive member 210; the cutting drive member 210 can drive the cutting transmission assembly 230 to rotate, and the cutting transmission assembly 230 can convert the rotational action of the cutting drive member 210 into a linear action, so that the cutting transmission assembly 230 drives the cutting member 220 along a direction parallel to the connecting shaft 350 ( Figure 2 The cutting machine makes a linear reciprocating motion in the X direction to complete the cutting action.

[0044] In one embodiment, the cutting transmission assembly 230 includes a rotating disk 231 and a connecting rod 232. The connecting rod 232 has a first end 2321 and a second end 2322. The first end 2321 and the second end 2322 are arranged relatively along the length direction of the connecting rod 232; the first end 2321 is movably connected to the rotating disk 231, and the second end 2322 is movably connected to the cutting member 220. The output end of the cutting drive member 210 is connected to the rotating disk 231. The cutting drive member 210 can drive the rotating disk 231 to rotate, so as to drive the cutting member 220 along a direction parallel to the connecting shaft 350 ( Figure 2 X direction) for linear reciprocating motion.

[0045] The connecting rod 232 is set away from the center of the rotating disk 231. The rotating disk 231 and the connecting rod 232 form an eccentric slider model. At the same time, the length of the connecting rod 232 is greater than the radius of the rotating disk 231. The connecting rod 232 rotates with the rotating disk 231, and the cutting member 220 connected thereto rotates in a direction parallel to the connecting axis 350 ( Figure 2 X direction) for linear reciprocating motion.

[0046] When the second transmission gear 330, the first mounting member 341 and the second mounting member 342 are arranged in sequence from top to bottom, the cutting action of the cutting member 220 in the cutting mechanism 200 is an up and down movement. The cooperation of the turntable 231 and the connecting rod 232 can realize the lifting (up and down) movement of the cutting member 220. The cooperation of the turntable 231 and the connecting rod 232 makes it possible for the cutting drive member 210 to realize the lifting (up and down) movement of the cutting member 220 without the need for continuous start and stop reversing, thereby being able to adapt to high-frequency cutting actions and improving the efficiency of pin cutting of the electronic component 600.

[0047] In another embodiment, the cutting transmission assembly 230 may be a screw, and the cutting drive member 210 includes a rotary motor, and the rotary motor and the screw cooperate to drive the cutting member 220 to perform linear reciprocating motion. Of course, the cutting drive member 210 may also include a linear motor or a linear cylinder, and the linear motor or the linear cylinder directly drives the cutting member 220 to perform linear reciprocating motion, thereby completing the cutting action. In this embodiment, the cutting drive member 210 needs to be continuously started and stopped to change direction to achieve the reciprocating motion of the cutting member 220.

[0048] In one embodiment, see Figure 3 The cutting mechanism 200 further includes a cutting platform 240, on which a guide groove 241 is provided. The guide groove 241 is arranged along a direction parallel to the connecting shaft 350 (the cutting direction of the cutting member 220). Figure 2 The guide groove 241 extends in the X direction in the middle of the cutting tool 220, and the setting of the guide groove 241 can guide the movement of the cutting member 220, so that its movement trajectory is stable and consistent during the entire movement process. The guide groove 241 is a dovetail groove, which can limit and fix the cutting member 220, and is used to limit the gap between the cutting member 220 and the cutting platform 240, so as to avoid collision and damage of the cutting member 220 during the movement, and avoid the knife setting operation, thereby extending the service life of the cutting member 220, which is conducive to reducing production costs.

[0049] In one embodiment, see Figure 4 The cutting mechanism 200 also includes a bearing seat 250, on which the cutting drive member 210 and / or the turntable 231 are mounted. The bearing seat 250 is disposed on a second mounting member 342 of the mounting frame 340, and the setting of the bearing seat 250 can fix the entire cutting mechanism 200.

[0050] The above specific examples are used to illustrate the present application, which is only used to help understand the present application and is not intended to limit the present application. For technicians in the technical field to which the present application belongs, they can also make some simple deductions, deformations or substitutions based on the ideas of the present application.

Claims

1. A pin cutting device, characterized in that: include: Mounting seat; A cutting mechanism, the cutting mechanism is used to cut the pins of the electronic components; And an angle adjustment mechanism, the angle adjustment mechanism includes an angle adjustment drive, a first transmission gear, a second transmission gear, a mounting frame and a connecting shaft; the angle adjustment drive is arranged on the mounting seat; one end of the connecting shaft is movably connected to the second transmission gear, and the other end is connected to the mounting seat; the first transmission gear is arranged at the output end of the angle adjustment drive, the second transmission gear is meshed with the first transmission gear, and the second transmission gear is fixedly connected to the mounting frame, and the cutting mechanism is arranged on the mounting frame; the angle adjustment drive drives the first transmission gear to rotate, which can drive the second transmission gear to rotate around the connecting shaft and drive the mounting frame to rotate, so that the cutting mechanism rotates synchronously, so as to adjust the cutting angle of the cutting mechanism.

2. The lead cutting device according to claim 1, characterized in that: The number of teeth of the second transmission gear is greater than the number of teeth of the first transmission gear.

3. The lead cutting device according to claim 1, characterized in that: The mounting frame includes a first mounting member, a second mounting member and a connecting member, wherein the connecting member is arranged between the first mounting member and the second mounting member; the second transmission gear is fixedly connected to the first mounting member, and the cutting mechanism is arranged on the second mounting member.

4. The lead cutting device according to claim 1, characterized in that: A bearing is arranged inside the second transmission gear, and a shaft cavity matching the connecting shaft is arranged inside the bearing, and the connecting shaft is inserted into the shaft cavity so that the second transmission gear is movably connected to the connecting shaft.

5. The lead cutting device according to claim 1, characterized in that: The pin cutting device also includes a spacing adjustment mechanism; the spacing adjustment mechanism is connected to the mounting seat and is used to drive the mounting seat to perform linear reciprocating motion in a direction perpendicular to the connecting axis to adjust the distance between the cutting mechanism and the pins of the electronic component in a direction perpendicular to the connecting axis.

6. The lead cutting device according to claim 5, characterized in that: The spacing adjustment mechanism includes a spacing adjustment drive and a base, the base is fixed at a preset position, and the spacing adjustment drive is arranged on the base; the output end of the spacing adjustment drive is connected to the mounting seat, and is used to drive the mounting seat to perform linear reciprocating motion in a direction perpendicular to the connecting axis.

7. The lead cutting device according to claim 6, characterized in that: The spacing adjustment drive member includes a linear motor; and / or the angle adjustment drive member includes a rotary motor.

8. The lead cutting device according to claim 1, characterized in that: The cutting mechanism includes a cutting drive and a cutting member, wherein the cutting drive is arranged on the mounting frame, and the cutting member is movably arranged on the mounting frame. The cutting drive is connected to the cutting member, and the cutting drive can drive the cutting member to perform linear reciprocating motion in a direction parallel to the connecting axis.

9. The lead cutting device according to claim 8, characterized in that: The cutting mechanism also includes a cutting transmission assembly, which is arranged between the cutting drive and the cutting member, and is connected to the output end of the cutting drive; the cutting drive can drive the cutting transmission assembly to rotate, so that the cutting transmission assembly drives the cutting member to perform linear reciprocating motion in a direction parallel to the connecting axis.

10. The lead cutting device according to claim 9, characterized in that: The cutting transmission assembly includes a turntable and a connecting rod, the connecting rod having a first end and a second end, the first end and the second end being arranged relatively to each other along the length direction of the connecting rod; the first end is movably connected to the turntable, the second end is movably connected to the cutting member, the output end of the cutting drive member is connected to the turntable, and the cutting drive member can drive the turntable to rotate, so as to drive the cutting member to perform linear reciprocating motion in a direction parallel to the connecting axis through the connecting rod.

Images