Double station blanking shear device

Abstract

The utility model belongs to packaging machine bag forming technical field provides double position material type scissors device, including frame, be provided with support seat and adjusting seat in the frame, be provided with the distance adjusting assembly for adjusting the distance between support seat, adjusting seat between frame and adjusting seat, two groups of scissors mechanism, two scissors mechanism respectively set up in support seat, adjusting seat, be provided with shearing drive assembly between two scissors mechanism and frame, and the scissors mechanism includes inner knife and two groups of outer knives, and the inner knife is located between two outer knives, and the inner knife is provided with the air -blowing spare in, and the air -blowing spare is used for removing the redundant material after shearing, and a plurality of fine adjustment components for adjusting the gap with the inner knife are arranged on two outer knives along the extension direction of outer knife respectively. The utility model on the basis of double position processing, through setting up air -blowing spare can effectively remove the film material to prevent the waste film material and get stuck in the knife groove, and simultaneously can flexibly adjust the gap between each position of outer knife and the inner knife.

Description

Technical Field

[0001] This utility model belongs to the field of packaging machine bag forming technology, and particularly relates to a dual-station material removal scissor device. Background Technology

[0002] In the bag-making process of a horizontal packaging machine, the cutting shear module, as a key execution component, is directly responsible for cutting the continuously conveyed film material according to the preset size to form independent packaging bags. Its performance has a decisive impact on the production efficiency of the packaging machine and the quality of the final product.

[0003] Currently, the cutting shears commonly used in the industry operate on the principle of simple lateral shearing using a pair of cooperating moving and stationary blades to separate packaging bags. However, with the increasing diversification of market demands for packaging forms and functions, simple bag separation can no longer meet complex production requirements. For example, in some advanced packaging processes that require easy-tear openings, handle holes, or composite molding with other components, the film material needs to be punched out separately for each part, and then cut uniformly by the shears. Existing shear devices are limited in function, capable of only single-cutting, or they may remove too much material, leading to waste, which greatly restricts the process adaptability and product innovation capabilities of horizontal packaging machines.

[0004] Furthermore, existing shearing devices also have significant mechanical structural defects. To ensure clean and crisp shearing action and avoid phenomena such as "stringing" or "incomplete cutting," the gap between the moving blade and the stationary blade must be kept uniform and just right. If the gap is too large, it will lead to insufficient shearing force and ineffective cutting of the membrane material; if the gap is too small, it will cause accelerated blade wear and even collision damage. In actual assembly and debugging, adjusting this gap is particularly difficult. Due to the inherent machining errors and installation dimensional tolerances of the blades themselves, it is often difficult to achieve a completely consistent ideal gap along the entire blade length. This problem is particularly prominent at the end of the shears, that is, the free end opposite the transmission mechanism. Due to the limitation of structural rigidity, this end area is prone to slight gap changes due to stress deformation, becoming a weak point in the shearing force, thus frequently resulting in the membrane material not being completely cut at this point.

[0005] This "unbreakable" malfunction not only wastes film material but also leads to frequent production line downtime, requiring manual intervention and cleaning by operators, severely disrupting production continuity and reducing overall machine efficiency. Furthermore, residual film fragments may get caught in other parts of the equipment, causing secondary malfunctions or resulting in quality issues such as incomplete sealing of packaging bags. Therefore, existing cutting shear devices have significant shortcomings in both functionality and reliability, becoming a technical bottleneck restricting the performance improvement of high-level packaging equipment. Utility Model Content

[0006] The purpose of this invention is to provide a dual-station material removal shear device to solve the above-mentioned problems.

[0007] To achieve the above objectives, this utility model provides the following solution: a dual-station material removal shear device, comprising: A frame, wherein a support base and an adjustment base are provided inside the frame, and a spacing adjustment component for adjusting the distance between the support base and the adjustment base is provided between the frame and the adjustment base; Two sets of scissor mechanisms are respectively disposed in the support base and the adjustment base. A shearing drive assembly is disposed between the two scissor mechanisms and the frame. Each scissor mechanism includes an inner blade and two sets of outer blades. The inner blade is located between the two outer blades. An air blowing component is disposed inside the inner blade. The air blowing component is used to remove excess material after shearing. Several fine-tuning components for adjusting the gap with the inner blade are respectively disposed on the two outer blades along the extension direction of the outer blades.

[0008] Preferably, two sets of guide shafts are fixedly connected inside the frame, and the two guide shafts are arranged in parallel. The support seat and the adjusting seat are respectively provided with two sets of through holes. The support seat and the adjusting seat are slidably connected to the two guide shafts through the two through holes. The support seat is provided with a first locking handle, which is used to fix the support seat to one of the guide shafts.

[0009] Preferably, an adjusting screw is rotatably connected inside the frame. The adjusting screw is arranged parallel to the guide shaft and located between the two guide shafts. A light hole is opened in the middle of the support seat, and a threaded hole is opened in the middle of the adjusting seat. The adjusting screw passes through the light hole and the threaded hole in sequence, and the threaded hole is threaded onto the adjusting screw. A rotation drive is provided at one end of the adjusting screw.

[0010] Preferably, the scissor mechanism within the support base includes an inner support and two sets of outer supports. One end of the inner support and one end of the two outer supports are coaxially hinged to one end of the support base, and the inner support is located between the two outer supports. The two outer blades are respectively fixedly connected to two opposite side walls of the two outer supports, and the inner blade is fixedly connected to one side wall of the inner support. The air blowing component is disposed between the inner blade and the inner support.

[0011] Preferably, the shearing drive assembly includes a drive cylinder hinged to the frame, locking plates are fixedly connected between the two outer supports in the support base and between the two outer supports in the adjusting base, a connecting shaft is fixedly connected to the locking plate in the support base, the connecting shaft is arranged parallel to the guide shaft, the locking plate in the adjusting base is slidably sleeved on the connecting shaft, the telescopic end of the drive cylinder is rotatably sleeved on the connecting shaft, and a linkage mechanism is provided between the outer supports and the inner supports.

[0012] Preferably, the linkage mechanism within the support base includes a first swing arm and a second swing arm. The first swing arm is fixedly connected to one end of the inner bracket, and the first swing arm and the inner blade are located at both ends of the support base. The second swing arm is fixedly connected to one end of the outer bracket, and the second swing arm and the outer blade are located at both ends of the support base. A swing shaft is fixedly connected inside the frame, and a swing block is rotatably connected to the swing shaft. One end of a pull rod is hinged to each end of the swing block, and the other ends of the two pull rods are respectively hinged to the ends of the first swing arm and the second swing arm away from the support base.

[0013] Preferably, the side wall of the outer bracket has a plurality of through holes along the direction of the guide shaft, the plurality of through holes are disposed away from the inner bracket, and a guide bolt passes through each of the plurality of through holes. The end of the guide bolt is threadedly connected to the outer blade, and the fine adjustment component is disposed between the outer blade and the outer bracket.

[0014] Preferably, the fine-tuning component includes a plurality of threaded holes formed on the outer bracket, the plurality of threaded holes being arranged along the direction of the guide shaft, the threaded holes being located close to the inner bracket, and a set screw being threadedly connected to the end of the threaded hole away from the outer blade, and a spring abutting between the set screw and the side wall of the outer blade near the outer bracket.

[0015] Preferably, the air blowing component includes a plurality of air holes formed in the inner blade, the air outlets of the plurality of air holes are located on the side wall of the inner blade near the outer blade, and the air outlets face the direction of the outer blade. A plurality of air channels are formed in the inner support, the air outlets of the plurality of air channels are connected to the air inlet ends of the plurality of air holes, and the air inlet ends of the air channels are connected to an air supply device.

[0016] Preferably, the adjusting seat is provided with a second locking handle for fixing the adjusting seat to a guide shaft.

[0017] Compared with the prior art, this utility model has the following advantages and technical effects: Overall, this utility model realizes dual-station processing by setting two sets of scissor mechanisms, and the gap between the two scissor mechanisms can be adjusted to meet the production needs of different product sizes. This utility model also sets an air blowing component, which can quickly remove excess material cut off and effectively remove film material, improving the flexibility of cutting and effectively preventing waste film material from getting stuck in the blade groove. At the same time, this utility model sets several fine-tuning components along the outer blade direction, which can flexibly adjust the gap between the outer blade and the inner blade at various positions, ensuring that the gap between the outer blade and the inner blade is uniform at all points, ensuring that the cutting action is clean and neat, and improving the cutting efficiency. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the scissor device of this utility model; Figure 2 This is a second schematic diagram of the scissor device of this utility model; Figure 3 This is a schematic diagram of the support base and adjustment base of this utility model; Figure 4 for Figure 3 Enlarged view of part A in the image; Figure 5 This is a schematic diagram of the air blowing component of this utility model; Figure 6 This is a schematic diagram of the fine-tuning component of this utility model; Figure 7 This is a schematic diagram showing the connection between the outer blade and the outer support of this utility model; Figure 8 This is a third schematic diagram of the cutting device of this utility model; The components are as follows: 1. Frame; 2. Cylinder bracket; 3. Drive cylinder; 4. Guide shaft; 5. Swing shaft; 6. Adjusting screw; 7. Support seat; 8. Adjusting seat; 9. First locking handle; 10. Inner bracket; 11. Outer bracket; 12. Swing block; 13. Connecting shaft; 14. Locking plate; 15. Locking piece; 16. Pull rod; 17. Outer blade; 18. Inner blade; 19. Spring; 20. Set screw; 21. Air hole; 22. Air passage; 23. Through hole; 24. Smooth hole; 25. Threaded hole; 26. First swing rod; 27. Second swing rod; 28. Smooth rod bolt; 29. ​​Second locking handle; 30. Handwheel. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0022] Reference Figures 1-8 This utility model provides a dual-station material removal shear device, comprising: The frame 1 is provided with a support base 7 and an adjustment base 8. A spacing adjustment component for adjusting the distance between the support base 7 and the adjustment base 8 is provided between the frame 1 and the adjustment base 8. Two sets of shear mechanisms are respectively installed in the support base 7 and the adjustment base 8. A shearing drive assembly is installed between the two shear mechanisms and the frame 1. The shear mechanism includes an inner blade 18 and two sets of outer blades 17. The inner blade 18 is located between the two outer blades 17. An air blowing component is installed in the inner blade 18 to remove excess material after shearing. Several fine-tuning components for adjusting the gap with the inner blade 18 are respectively installed on the two outer blades 17 along the extension direction of the outer blades 17.

[0023] The main function of the spacing adjustment component is to adjust the distance between the support base 7 and the adjustment base 8, thereby adjusting the spacing between the two sets of scissor mechanisms to achieve dual-station production according to actual production needs; the main function of the shearing drive component is to drive the inner blade 18 to move towards the middle of the two sets of outer blades 17, and through the synchronous closing between the inner blade 18 and the outer blades 17, to achieve the shearing of the packaging bag to remove excess material from the packaging bag during the bag making process; the main function of the air blowing component is to remove the excess material from the scissor device; the main function of the fine adjustment component is to adjust the gap between the outer blade 17 and the inner blade 18 to ensure a good shearing effect. Overall, this invention achieves dual-station processing by setting two sets of scissor mechanisms. The gap between the two scissor mechanisms can be adjusted to meet the production needs of different product sizes. Furthermore, by incorporating an air-blowing component, excess material can be quickly removed and film material can be effectively removed, improving cutting flexibility and preventing waste film material from getting stuck in the blade groove. Additionally, by setting several fine-tuning components along the outer blade direction, the gap between the outer blade and the inner blade can be flexibly adjusted at various positions, ensuring uniform gaps between the outer and inner blades, guaranteeing clean and efficient cutting, and improving cutting efficiency.

[0024] The scheme is further optimized. Two sets of guide shafts 4 are fixedly connected inside the frame 1. The two guide shafts 4 are arranged in parallel. Two sets of through holes 23 are opened on the support seat 7 and the adjustment seat 8 respectively. The support seat 7 and the adjustment seat 8 are slidably connected to the two guide shafts 4 through the two through holes 23. A first locking handle 9 is provided on the support seat 7. The first locking handle 9 is used to fix the support seat 7 to a guide shaft 4.

[0025] like Figure 1 and Figure 3 As shown, the first locking handle 9 adopts a conventional setting. When the first locking handle 9 is in the locked state, it can clamp the opening at the left end of the support seat 7, thereby clamping the guide shaft 4 at the left end of the through hole 23, thus restricting the movement of the support seat 7. At the same time, the adjusting seat 8 can slide along the axial direction of the two sets of guide shafts 4 to adjust the gap between the support seat 7 and the adjusting seat 8, thereby adjusting the distance between the two sets of scissor mechanisms.

[0026] In a further optimized design, an adjusting screw 6 is rotatably connected inside the frame 1. The adjusting screw 6 is parallel to the guide shaft 4 and located between the two guide shafts 4. A light hole 24 is opened in the middle of the support seat 7, and a threaded hole 25 is opened in the middle of the adjusting seat 8. The adjusting screw 6 passes through the light hole 24 and the threaded hole 25 in sequence, and the threaded hole 25 is threaded onto the adjusting screw 6. A rotation drive component is provided at one end of the adjusting screw 6.

[0027] Further optimize the plan, such as Figure 3 As shown, a handwheel 30 is coaxially fixed to one end of the adjusting screw 6. When it is necessary to increase the distance between the two sets of scissor mechanisms, the adjusting screw 6 can be rotated by turning the handwheel 30. The adjusting screw 6 drives the adjusting seat 8 to move away from the support seat 7 through the threaded transmission between it and the threaded hole 25, thereby increasing the distance between the two scissor mechanisms. Similarly, rotating the handwheel 30 in the opposite direction will decrease the distance between the two sets of scissor mechanisms. Since the support seat 7 is provided with a smooth hole, the rotation of the adjusting screw 6 will not affect the position of the support seat 7.

[0028] The scheme is further optimized. The scissor mechanism in the support base 7 includes an inner support 10 and two sets of outer supports 11. One end of the inner support 10 and the two outer supports 11 are coaxially hinged to one end of the support base 7, and the inner support 10 is located between the two outer supports 11. The two outer blades 17 are respectively fixedly connected to the two opposite side walls of the two outer supports 11. The inner blade 18 is fixedly connected to one side wall of the inner support 10. The air blowing component is arranged between the inner blade 18 and the inner support 10.

[0029] like Figure 3 As shown, in this embodiment, the inner bracket 10 and the outer bracket 11 are hinged to the support base 7 and are coaxially arranged with the guide shaft 4 at the right end.

[0030] Further optimize the plan, such as Figure 3As shown, the connection method between the outer bracket 11 and the inner bracket 10 inside the adjusting seat 8 and the adjusting seat 8 is the same as that in the support seat 7.

[0031] The scheme is further optimized. The shearing drive assembly includes a drive cylinder 3 hinged to the frame 1. Locking plates 14 are fixedly connected between the two outer supports 11 in the support base 7 and between the two outer supports 11 in the adjusting base 8. A connecting shaft 13 is fixedly connected to the locking plate 14 in the support base 7. The connecting shaft 13 is arranged parallel to the guide shaft 4. The locking plate 14 in the adjusting base 8 is slidably sleeved on the connecting shaft 13. The telescopic end of the drive cylinder 3 is rotatably sleeved on the connecting shaft 13. A linkage mechanism is provided between the outer support 11 and the inner support 10.

[0032] To further optimize the design, locking plates 15 are fixedly connected between the ends of the two outer supports 11 in the support base 7 that are away from the guide shaft 4, and between the ends of the two outer supports 11 in the adjustment base 8 that are away from the guide shaft 4, thereby improving the stability of the relative position between the two outer supports 11.

[0033] Further optimize the plan, such as Figure 1 As shown, a cylinder bracket 2 is fixedly connected to the frame 1, and the drive cylinder 3 is hinged to the cylinder bracket 2.

[0034] Further optimization of the scheme: the linkage mechanism inside the support base 7 includes a first swing rod 26 and a second swing rod 27. The first swing rod 26 is fixedly connected to one end of the inner bracket 10, and the first swing rod 26 and the inner knife 18 are located at both ends of the support base 7. The second swing rod 27 is fixedly connected to one end of an outer bracket 11, and the second swing rod 27 and the outer knife 17 are located at both ends of the support base 7. A swing shaft 5 is fixedly connected inside the frame 1. A swing block 12 is rotatably connected to the swing shaft 5. One end of a pull rod 16 is hinged to both ends of the swing block 12. The other ends of the two pull rods 16 are respectively hinged to the ends of the first swing rod 26 and the second swing rod 27 away from the support base 7.

[0035] like Figures 1-3 As shown, when it is necessary to close the inner blade 18 and the outer blade 17, the drive cylinder 3 can be controlled to extend its telescopic end. The telescopic end, through the connecting shaft 13 and the two sets of locking plates 14, simultaneously pushes the four sets of outer supports 11 to deflect towards the inner support 10. At the same time as the outer support 11 deflects, the second swing rod 27 deflects accordingly and pulls one end of the swing block 12 through the pull rod 16 to deflect around the swing axis 5. The other end of the swing block 12 then pulls the hinged pull rod 16, pulling the first swing rod 26 to deflect around the guide shaft 4, thereby causing the inner support 10 to deflect towards the outer support 11, realizing the linkage between the inner support 10 and the outer support 11, and thus driving the inner blade 18 and the outer blade 17 to close, achieving the shearing action. Similarly, controlling the drive cylinder 3 to retract its telescopic end can separate the inner blade 18 and the outer blade 17.

[0036] To further optimize the design, several through holes are provided on the side wall of the outer support 11 along the direction of the guide shaft 4. These through holes are located away from the inner support 10. Smooth rod bolts 28 pass through each of the through holes. The ends of the smooth rod bolts 28 are threadedly connected to the outer blade 17. The fine-tuning component is located between the outer blade 17 and the outer support 11.

[0037] like Figure 7 As shown, the outer blade 17 is connected to the outer bracket 11 via the smooth rod bolt 28, and can deflect with the deflection of the outer bracket 11. At the same time, the outer blade 17 can move relative to the outer bracket 11 under the action of the through hole and the smooth rod bolt 28. Further optimization of the scheme: the fine-tuning component includes several threaded holes on the outer bracket 11. The threaded holes are arranged along the direction of the guide shaft 4. The threaded holes are located close to the inner bracket 10. The end of the threaded hole away from the outer blade 17 is threaded with a set screw 20. A spring 19 abuts between the set screw 20 and the side wall of the outer blade 17 near the outer bracket 11.

[0038] like Figure 2 and Figure 6 As shown, the position of the set screw 20 within the outer bracket 11 can be adjusted by rotating it, thereby pushing the outer blade 17 via the spring 19, thus adjusting the gap between the outer blade 17 and the inner blade 18. Since multiple sets of set screws 20 are provided along the extension direction of the outer bracket 11, the screwing amount of each set screw 20 can be adjusted according to the actual gap, thereby adjusting the gap at various points between the outer blade 17 and the inner blade 18 to ensure uniform gap.

[0039] Further optimization of the design: the air blowing component includes several air holes 21 opened in the inner blade 18. The air outlet of the several air holes 21 is located on the side wall of the inner blade 18 near the outer blade 17, and the air outlet faces the outer blade 17. Several air channels 22 are opened in the inner support 10. The air outlet of the several air channels 22 is connected to the air inlet of the several air holes 21. The air inlet of the air channels 22 is connected to an air supply device.

[0040] like Figures 3-5 As shown, the air supply device introduces high-pressure air into the air passage 22, and through the air outlet of the air passage 22 into the air hole 21, and finally blows it out from the air outlet of the air hole 21 and the working surface of the inner blade 18, so as to remove the cut excess material in time and blow it away from the shearing device.

[0041] The scheme is further optimized by providing a second locking handle 29 on the adjusting seat 8 for fixing the adjusting seat 8 to a guide shaft 4.

[0042] like Figure 3 As shown in this embodiment, the second locking handle 29 has the same structure as the first locking handle 9. After adjusting the position of the adjusting seat 8, the position of the adjusting seat 8 can be fixed by locking the second locking handle 29 to prevent displacement during operation.

[0043] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0044] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. A dual-station material removal shear device, characterized in that, include: A frame (1) is provided with a support base (7) and an adjustment base (8) inside the frame (1). A spacing adjustment component for adjusting the distance between the support base (7) and the adjustment base (8) is provided between the frame (1) and the adjustment base (8). Two sets of scissor mechanisms are respectively disposed in the support base (7) and the adjustment base (8). A shearing drive assembly is disposed between the two scissor mechanisms and the frame (1). The scissor mechanism includes an inner blade (18) and two sets of outer blades (17). The inner blade (18) is located between the two outer blades (17). An air blowing component is disposed in the inner blade (18). The air blowing component is used to remove excess material after shearing. Several fine-tuning components for adjusting the gap with the inner blade (18) are respectively disposed on the two outer blades (17) along the extension direction of the outer blades (17).

2. The dual-station material removal shear device according to claim 1, characterized in that: Two sets of guide shafts (4) are fixedly connected inside the frame (1). The two guide shafts (4) are arranged in parallel. Two sets of through holes (23) are respectively opened on the support seat (7) and the adjustment seat (8). The support seat (7) and the adjustment seat (8) are slidably connected to the two guide shafts (4) through the two through holes (23). A first locking handle (9) is provided on the support seat (7). The first locking handle (9) is used to fix the support seat (7) to one of the guide shafts (4).

3. The dual-station material removal shear device according to claim 2, characterized in that: An adjusting screw (6) is rotatably connected inside the frame (1). The adjusting screw (6) is parallel to the guide shaft (4) and located between the two guide shafts (4). A light hole (24) is opened in the middle of the support seat (7). A threaded hole (25) is opened in the middle of the adjusting seat (8). The adjusting screw (6) passes through the light hole (24) and the threaded hole (25) in sequence. The threaded hole (25) is threaded on the adjusting screw (6). A rotation drive is provided at one end of the adjusting screw (6).

4. The dual-station material removal shear device according to claim 2, characterized in that: The scissor mechanism inside the support base (7) includes an inner support (10) and two sets of outer supports (11). One end of the inner support (10) and the two outer supports (11) are coaxially hinged to one end of the support base (7), and the inner support (10) is located between the two outer supports (11). The two outer blades (17) are respectively fixedly connected to the two opposite side walls of the two outer supports (11). The inner blade (18) is fixedly connected to one side wall of the inner support (10). The air blowing component is arranged between the inner blade (18) and the inner support (10).

5. The dual-station material removal shear device according to claim 4, characterized in that: The shearing drive assembly includes a drive cylinder (3) hinged to the frame (1). Locking plates (14) are fixedly connected between the two outer supports (11) in the support base (7) and between the two outer supports (11) in the adjusting base (8). A connecting shaft (13) is fixedly connected to the locking plate (14) in the support base (7). The connecting shaft (13) is parallel to the guide shaft (4). The locking plate (14) in the adjusting base (8) is slidably sleeved on the connecting shaft (13). The telescopic end of the drive cylinder (3) is rotatably sleeved on the connecting shaft (13). A linkage mechanism is provided between the outer support (11) and the inner support (10).

6. The dual-station material removal shear device according to claim 5, characterized in that: The linkage mechanism inside the support base (7) includes a first swing rod (26) and a second swing rod (27). The first swing rod (26) is fixedly connected to one end of the inner bracket (10), and the first swing rod (26) and the inner blade (18) are located at both ends of the support base (7). The second swing rod (27) is fixedly connected to one end of an outer bracket (11), and the second swing rod (27) and the outer blade (17) are located at both ends of the support base (7). A swing shaft (5) is fixedly connected inside the frame (1), and a swing block (12) is rotatably connected to the swing shaft (5). One end of a pull rod (16) is hinged to both ends of the swing block (12), and the other ends of the two pull rods (16) are respectively hinged to the ends of the first swing rod (26) and the second swing rod (27) away from the support base (7).

7. The dual-station material removal shear device according to claim 4, characterized in that: The outer support (11) has several through holes along the direction of the guide shaft (4) on its side wall. The through holes are located away from the inner support (10). The through holes are respectively connected to the smooth rod bolts (28). The end of the smooth rod bolts (28) is threaded to the outer blade (17). The fine adjustment component is located between the outer blade (17) and the outer support (11).

8. The dual-station material removal shear device according to claim 4, characterized in that: The fine-tuning component includes a plurality of threaded holes opened on the outer bracket (11). The plurality of threaded holes are arranged along the direction of the guide shaft (4). The threaded holes are arranged close to the inner bracket (10). The end of the threaded hole away from the outer blade (17) is threaded with a set screw (20). A spring (19) abuts between the set screw (20) and the side wall of the outer blade (17) close to the outer bracket (11).

9. The dual-station material removal shear device according to claim 4, characterized in that: The air blowing component includes a plurality of air holes (21) opened in the inner blade (18). The air outlets of the plurality of air holes (21) are located on the side wall of the inner blade (18) near the outer blade (17) and the air outlets face the outer blade (17). A plurality of air channels (22) are opened in the inner support (10). The air outlets of the plurality of air channels (22) are connected to the air inlet ends of the plurality of air holes (21). The air inlet ends of the air channels (22) are connected to an air supply device.

10. The dual-station material removal shear device according to claim 2, characterized in that: The adjusting seat (8) is provided with a second locking handle (29) for fixing the adjusting seat (8) to a guide shaft (4).

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