Pneumatic clamping scissors

Abstract

The utility model discloses a pair of pneumatic clamping scissors, which comprises a clamping scissor body and a pneumatic driving module, the clamping and shearing body comprises a first clamping and shearing body and a second clamping and shearing body which are movably matched; the front ends of the first clamping and shearing body and the second clamping and shearing body are clamping and shearing heads, and the rear ends are clamping and shearing tails; a control assembly for controlling opening and closing of the first clamping and shearing body and the second clamping and shearing body is arranged between the clamping and shearing tails of the first clamping and shearing body and the second clamping and shearing body; the pneumatic driving module comprises a driving part and a movable part driven by the driving part, and the movable part is further provided with an adjusting assembly moving along with the movable part; the adjusting assembly is matched with the control assembly to control the opening and closing states of the first clamping and shearing body and the second clamping and shearing body. The shearing function of the clamping and shearing body is achieved, and the clamping and shearing body can be rapidly driven to reset through the reset movement of the movable part after shearing is completed. The working efficiency is improved, the situation that the clamping and shearing body forcibly conducts the next-time shearing operation before being reset thoroughly can be avoided, and the situation that equipment is damaged and personnel are injured is prevented.

Description

Technical Field

[0001] The utility model relates to the field of manufacturing and design of pneumatic tools, and more particularly to a pair of pneumatic scissors. Background Art

[0002] Pneumatic shears, as an important tool in industrial production, maintenance operations and daily life, have been widely used due to their high efficiency and convenience. Traditional pneumatic shears usually include a shear body and a pneumatic drive device. The shear body can open and close through the power provided by the pneumatic drive device, thereby successfully completing the shearing task.

[0003] However, with the continuous advancement of technology and the increasing demand of users, traditional pneumatic shears have gradually shown their shortcomings in terms of performance, function and ease of operation, especially in the resetting process of the shears after the shears are completed.

[0004] During shearing operations, various factors, such as the material and thickness of the object being sheared, can affect the shear force of the clamp. This change in shear force can cause the clamp to become embedded or stuck after shearing due to excessive shear force, making the opening and resetting of the clamp slow and difficult. More critically, traditional pneumatic shears typically rely on a single reset mechanism, a spring, to achieve the reset function of the clamp. However, in complex and changing shearing environments, this single reset method cannot ensure that the clamp can return to its initial position smoothly, accurately, and quickly every time.

[0005] The difficulty in resetting the shear body not only greatly reduces the working efficiency of pneumatic shears, but may also trigger a series of chain reactions; for example, when the shear body has not been completely reset, if the next cutting operation is forced, it is very likely to cause damage to the shear body or related components, thereby seriously shortening its service life; this not only increases the user's maintenance cost, but may also cause safety accidents due to tool failure, posing a potential threat to the user's personal safety that cannot be ignored. Utility Model Content

[0006] The utility model overcomes the deficiencies of the prior art and provides a pneumatic scissors clip that is simple in structure, reasonable in design, quick and accurate in resetting, safe in use, and not prone to damage.

[0007] In order to solve the above technical problems, the technical solutions of the present invention are as follows:

[0008] A pneumatic scissors comprises a scissors body and a pneumatic drive module; the scissors body comprises a first scissors body and a second scissors body that are movable together; the front ends of the first scissors body and the second scissors body are scissors heads, and the rear ends are scissors tails; a control component for controlling the opening and closing of the first scissors body and the second scissors body is provided between the scissors tails; the pneumatic drive module comprises a driving part and a movable part driven by the driving part, and the movable part is also provided with an adjustment component that moves with the movable part; the adjustment component cooperates with the control component, and the state of the control component is adjusted by the adjustment component to control the opening and closing state of the first scissors body and the second scissors body.

[0009] Furthermore, the control assembly includes a first control rod and a second control rod, and the two ends of the first control rod and the second control rod are respectively a first connecting end and a second connecting end; the first connecting ends of the first control rod and the second control rod are rotatably connected, the second connecting end of the first control rod is rotatably connected to the clamping tail of the first clamping body, and the second connecting end of the second control rod is rotatably connected to the clamping tail of the second clamping body; the adjustment assembly includes an adjustment rod and an adjustment sleeve, one end of the adjustment rod is fixedly connected to the movable part, and the other end of the adjustment rod is rotatably connected to the adjustment sleeve; the adjustment sleeve is assembled and connected to the first connecting end of the first control rod and / or the second control rod.

[0010] Furthermore, the second connecting ends of the first control rod and the second control rod are on the same straight line; the connection between the first control rod and the second control rod and the connection between the first clamping body and the second clamping body are on the same straight line; when the control assembly moves, the moving path of the connection between the first control rod and the second control rod is perpendicular to the straight line where their second connecting ends are located; the first control rod and the second control rod have the same length.

[0011] Furthermore, there are two groups of adjustment components, and each group of adjustment components has an adjustment rod and an adjustment sleeve; when the clamping heads of the first clamping body and the second clamping body abut against each other during the shearing action, there is a gap between the clamping tails of the two, and the ends of the adjustment sleeves of the two adjustment rods in the two adjustment components are located in the gap, and the two adjustment rods are respectively provided corresponding to the first control rod and the second control rod, and the adjustment sleeves on the two adjustment rods respectively cooperate with the first control rod and the second control rod.

[0012] Furthermore, a limit block is provided at the end of the first connecting end of the first control rod and the second control rod, and the limit block is located on the outer surface of the first control rod and the second control rod close to the shearing head; the limit block includes a connection area and a contact area, and the limit block is fixedly connected to the first control rod and the second control rod through the connection area, and the contact areas of the upper limit blocks of the first control rod and the second control rod extend to each other's area, and when the first control rod and the second control rod are parallel, the contact areas of the limit blocks on the two control rods abut against each other.

[0013] Furthermore, the movable part includes a movable block, a movable fitting space is set in the movable block, and a fitting opening is set at one end of the movable block facing the scissor clamp body, and the scissor clamp tail is in the movable fitting space; the inner diameter of the movable fitting space gradually changes from large to small from one end where the fitting opening is set to the other end, and the inner wall of the movable fitting space is a smooth inclined surface; the adjusting rod is in the movable fitting space, and the bottom end of the adjusting rod is fixedly connected to the inner wall of the movable fitting space.

[0014] Furthermore, the control assembly is detachably assembled on the clamping tail; a detachable assembly block is provided on the clamping tail of the first clamping body and the second clamping body, and the second connecting ends of the first control rod and the second control rod are rotatably connected to the assembly block.

[0015] Furthermore, the pneumatic drive module includes an installation shell, an installation space is provided in the installation shell, and the two ends of the installation shell are respectively a top opening and a bottom opening; the first shearing body and the second shearing body are assembled in the installation space, and the shearing heads of the first shearing body and the second shearing body are exposed from the installation space through the top opening; the movable block is movably assembled in the installation space, and the shearing tails of the first shearing body and the second shearing body are matched with the movable matching space; the driving part is assembled at the bottom opening of the installation shell and cooperates with the movable part to drive it to move; a reset spring is also provided in the installation space, and the two ends of the reset spring respectively abut against the movable block and the inner wall of the installation space.

[0016] Furthermore, a movable limit assembly is also provided in the installation shell; the movable limit assembly includes a movable rod, a limit rod and a transmission member; the transmission member adopts a gear, the movable rod and the limit rod are located on both sides of the gear, and the movable rod and the limit rod are provided with matching teeth, which mesh with the gear through the matching teeth; the limit rod is located on the side of the gear close to the shearing body, and the movable rod is located on the side of the gear close to the driving part; the outer surface of the movable block is provided with a matching part arranged along its circumference; the diameters of the matching parts are different at different places, and the diameter of the side close to the top opening is smaller than the diameter of the side close to the bottom opening, and the outer surface of the matching part is a smoothly inclined contact surface; the end of the movable rod abuts the contact surface and moves under the drive of the movable block; when the movable rod retracts, it drives the gear to rotate, thereby driving the limit rod to extend outward, and the extended limit rod is on the movable path of the matching part.

[0017] Furthermore, the first or second clamping scissors body is equipped with a blade at the clamping head; the width of the clamping scissors head not equipped with a blade gradually changes from small to large from the clamping scissors head away from the clamping tail to the clamping tail.

[0018] Beneficial effects:

[0019] In the present invention, the opening and closing states of the first and second shearing bodies are adjusted by cooperating with the adjustment component and the control component, which not only realizes the shearing function of the shearing body, but also can quickly drive the shearing body to reset through the reset activity of the movable part itself after the shearing is completed; it not only improves the work efficiency, but also avoids the situation where the next shearing operation is forced to be carried out before the shearing body is completely reset, so as to prevent equipment damage and personal injury; at the same time, there is no need to set up other driving devices to drive the shearing body to reset, which reduces costs.

[0020] In the utility model, the first control rod and the second control rod are rotatably connected between the first connection ends, thereby realizing the linkage between the two rods; making the clamping and shearing action and the reset action of the clamping and shearing body more coordinated and stable, thereby improving the accuracy of clamping and shearing and reset; at the same time, through the setting of the adjusting rod and the adjusting sleeve, the adjusting component can transmit the force of the movable part to the control component, and then realize the clamping and shearing action and the reset action of the clamping and shearing body through the control component.

[0021] In the present invention, the second connecting ends of the first control rod and the second control rod are on the same straight line, so that the clamping body is subjected to more uniform force when opening and closing; the connection between the first control rod and the second control rod is on the same straight line as the connection between the first and second clamping bodies. This alignment design enhances the stability of the entire clamping body structure, making the clamping action more stable and reliable; when the control component is active, the moving path of the connection between the first control rod and the second control rod is perpendicular to the straight line where their second connecting ends are located, so that the first control rod and the second control rod can more effectively transmit force to the clamping body when adjusted; the first control rod and the second control rod have the same length, and this design enables the clamping body to maintain consistent clamping force, reset force and clamping angle when opening and closing.

[0022] In the present invention, when the shearing heads of the first and second shearing bodies abut against each other during the shearing action, a gap exists between the shearing tails. The design of the gap allows the adjusting rods of the two adjusting components to be located in the gap, which not only avoids direct interference of the adjusting components with the shearing action, but also ensures the smooth progress of the shearing action. At the same time, the adjusting sleeves on the two adjusting rods cooperate with the first control rod and the second control rod respectively, and each group of adjusting components controls the first control rod and the second control rod separately. This cooperation mechanism helps to maintain the stability and accuracy of the shearing body during the shearing process, thereby improving the shearing efficiency and shearing quality.

[0023] In the present invention, the relative position between the two control rods is precisely limited by the setting of the limit block, preventing the control rods from excessive movement; to avoid the first control rod and the second control rod continuing to move to drive the clamping body to close after the first control rod and the second control rod open the clamping body in parallel, causing damage to the equipment.

[0024] In the present invention, the movable fitting space of the movable block has an inner diameter difference, so when the movable block moves toward the clamping shear head, the clamping shear tail gradually penetrates into the movable fitting space, and at this time the inner diameter of the movable fitting space becomes smaller and smaller, squeezing the clamping shear tails of the first clamping shear body and the second clamping shear body gradually closer to drive the clamping shear body to perform the shearing function.

[0025] In the present invention, the control component can be detachably assembled on the shear tail, so that when the control component needs to be maintained, replaced or upgraded, the user can easily remove it from the shear tail, which simplifies the maintenance process, reduces maintenance costs and improves work efficiency; at the same time, it allows the user to replace control components of different specifications or types according to actual needs to adapt to different cutting tasks or working environments.

[0026] In the present utility model, the installation and matching of the shearing body and the pneumatic drive module are achieved through the arrangement of the installation shell.

[0027] In the present invention, the movable limit assembly limits the moving path of the movable block through the mutual cooperation of the movable rod, the limit rod and the gear; so as to avoid excessive movement of the movable block, which causes excessive clamping between the first clamping body and the second clamping body, resulting in damage to the clamping head.

[0028] In the present invention, the width of the shearing head is changed so that the device can perform shearing work in a relatively narrow space. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a structural diagram of the entire utility model.

[0030] Figure 2 for Figure 1 sectional view.

[0031] Figure 3 This is the structural diagram of the shear body.

[0032] Figure 4 for Figure 2 After the shear clamp body is removed, the coordination structure diagram of the pneumatic drive module, adjustment assembly and movable limit assembly is shown.

[0033] Figure 5 for Figure 2 Enlarged view of point A in the middle.

[0034] Figure 6 for Figure 2 Enlarged view of point B in the middle.

[0035] Figure 7 This is the structural diagram of the adjustment sleeve.

[0036] Figure 8This is a structural diagram of the cooperation between the limit block, the first control rod and the second control rod.

[0037] Figure 9 This is a structural diagram of the assembly block cooperating with the first control rod and the second control rod.

[0038] Numbers in the figure:

[0039] 1. Clamping shear body; 2. Pneumatic drive module; 3. Control assembly; 4. Adjustment assembly; 5. Return spring; 6. Movable limit assembly; 7. Blade; 11. First clamping shear body; 12. Second clamping shear body; 13. Clamping shear head; 14. Clamping shear tail; 15. Clamping surface; 16. Assembly block; 17. Connecting shaft; 21. Driving unit; 22. Movable unit; 23. Movable block; 24. Movable mating space; 25. Mating opening; 26. Mounting housing; 27. Mounting space; 28. Return spring; 29. ​​Assembly space; 31. First control lever; 32. Second control lever; 33. First connecting end; 34. Second connecting end 35. Limit block; 36. Connection area; 37. Contact area; 41. Adjustment rod; 42. Adjustment sleeve; 43. Connection block; 44. Left mounting plate; 45. Right mounting plate; 46. Mounting plate; 47. Mounting hole; 48. Hinge; 61. Movable rod; 62. Limit rod; 63. Transmission member; 64. Mating tooth; 231. Mating portion; 232. Contact surface; 233. Abutment block; 271. Top opening; 272. Bottom opening; 273. Mounting block; 291. First area; 292. Second area; 293. Third area; 294. Guide block; 295. Limit channel; 296. Compression spring. DETAILED DESCRIPTION

[0040] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that the embodiments are merely a specific description of the present invention, and their purpose is to allow those skilled in the art to better understand the technical solution of the present invention, and should not be regarded as limiting the present invention.

[0041] In the description of the present invention, it should be noted that the directions or positional relationships indicated by terms such as "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", and "outside" are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0042] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0043] Example:

[0044] like Figure 1-9 As shown, a pneumatic shears comprises a shears body 1 and a pneumatic drive module 2; the shears body 1 comprises a first shears body 11 and a second shears body 12 that can be movably matched; the middle parts of the first shears body 11 and the second shears body 12 can be movably matched so that the two can rotate relative to each other; the front ends of the first shears body 11 and the second shears body 12 are shears heads 13, and the rear ends are shears tails 14; opposite planes are provided on the inner side surfaces of the shears heads 13 of the first shears body 11 and the second shears body 12, and a clamping surface 15 is formed by the plane, and then the clamping and stabilizing work is performed in advance by the clamping surface 15 to facilitate subsequent shearing work; a control component 3 for controlling the opening and closing of the first shears body 11 and the second shears body 12 is provided between the shears tails 14; the pneumatic drive module 2 comprises a drive part 21 and a movable part driven by the drive part 21 22. The movable part 22 is also provided with an adjusting component 4 that moves with it; the adjusting component 4 cooperates with the control component 3, and the state of the control component 3 is adjusted by the adjusting component 4 to control the opening and closing state of the first clamping body 11 and the second clamping body 12; when the movable part 22 approaches the clamping body 1, the clamping body 1 performs shearing work, and when the movable part 22 is reset, it drives the clamping body 1 to reset; not only does it realize the shearing function of the clamping body 1, but it can also quickly drive the clamping body 1 to reset after the shearing is completed through the reset activity of the movable part 22 itself; it not only improves the work efficiency, but also avoids the situation where the clamping body 1 is not completely reset and the next shearing operation is forced to be carried out, so as to prevent equipment damage and personal injury; at the same time, there is no need to set up other driving devices to drive the clamping body 1 to reset, which reduces the cost of the equipment.

[0045] In the present utility model, the control assembly 3 includes a first control rod 31 and a second control rod 32, and the two ends of the first control rod 31 and the second control rod 32 are respectively a first connecting end 33 and a second connecting end 34; the first connecting end 33 of the first control rod 31 and the second control rod 32 are rotatably connected, the second connecting end 34 of the first control rod 31 is rotatably connected to the clamping tail 14 of the first clamping body 11, and the second connecting end 34 of the second control rod 32 is rotatably connected to the clamping tail 14 of the second clamping body 12; the rotational connection between the first connecting end 33 of the first control rod 31 and the second control rod 32 realizes the linkage between the two rods, making the clamping action and the resetting action of the clamping body 1 more coordinated and stable, thereby improving the accuracy of clamping and resetting.

[0046] In the present utility model, the adjusting assembly 4 includes an adjusting rod 41 and an adjusting sleeve 42, one end of the adjusting rod 41 is fixedly connected to the movable part 22, and the other end of the adjusting rod 41 is rotatably connected to the adjusting sleeve 42; the adjusting sleeve 42 is assembled and connected to the first connecting end 33 of the first control rod 31 and / or the second control rod 32; through the arrangement of the adjusting rod 41 and the adjusting sleeve 42, the adjusting assembly 4 can transmit the force of the movable part 22 to the control assembly 3, and then realize the clamping action and resetting action of the clamping body 1 through the control assembly 3.

[0047] In the present invention, the second connecting ends 34 of the first control rod 31 and the second control rod 32 are on the same straight line, so that the clamping body 1 is subjected to more uniform force when opening and closing; the connection between the first control rod 31 and the second control rod 32 is on the same straight line as the connection between the first clamping body 11 and the second clamping body 12. This alignment design enhances the stability of the entire clamping body 1 structure, making the clamping action more stable and reliable; when the control component 3 is active, the moving path of the connection between the first control rod 31 and the second control rod 32 is perpendicular to the straight line where the second connecting ends 34 of the two are located, so that the first control rod 31 and the second control rod 32 can more effectively transmit force to the clamping body 1 when adjusting; the first control rod 31 and the second control rod 32 have the same length. This design enables the clamping body 1 to maintain consistent clamping force, reset force and clamping angle when opening and closing.

[0048] Generally, a return spring 5 is also provided between the clipping tails 14 of the first clipping body 11 and the second clipping body 12, so that the first clipping body 11 and the second clipping body 12 can also be reset with the assistance of the return spring 5; the return spring 5 is located on the side of the first control rod 31 and the second control rod 32 close to the connection between the first clipping body 11 and the second clipping body 12, and the return spring 5 is outside the movable path of the connection between the first control rod 31 and the second control rod 32 to avoid interference.

[0049] In this embodiment, the number of adjustment components 4 is two groups, and each group of adjustment components 4 has an adjustment rod 41 and an adjustment sleeve 42; when the clamping heads 13 of the first clamping scissor body 11 and the second clamping scissor body 12 perform a shearing action and abut against each other, there is a gap between the clamping tails 14 of the two adjustment components 4, and the ends of the adjustment sleeves 42 of the two adjustment rods 41 are located in the gap. The two adjustment rods 41 are respectively provided with the first control rod 31 and the second control rod 32, and the adjustment sleeves 42 on the two adjustment rods 41 are respectively matched with the first control rod 31 and the second control rod 32. When the shearing action is performed, the design of the gap between the clamping tails 14 allows the adjusting rods 41 of the two adjusting components 4 to be located in the gap, which not only avoids the direct interference of the adjusting components 4 on the shearing action, but also ensures the smooth progress of the shearing action; at the same time, the adjusting sleeves 42 on the two adjusting rods 41 cooperate with the first control rod 31 and the second control rod 32 respectively, and each group of adjusting components 4 controls the first control rod 31 and the second control rod 32 separately. This cooperation mechanism helps to maintain the stability and accuracy of the clamping body 1 during the shearing process, thereby improving the shearing efficiency and shearing quality.

[0050] In the present invention, the adjusting sleeve 42 is detachably matched with the first control rod 31 and the second control rod 32; the adjusting sleeve 42 includes a connecting block 43 rotatably connected to the adjusting rod 41 and a mounting piece provided on the connecting block 43; the mounting piece includes a left mounting piece 44 and a right mounting piece 45, and the left and right mounting pieces 45 surround and form a space for matching with the first control rod 31 and the second control rod 32; the left mounting piece 44 and / or the right mounting piece 45 are adjustably assembled on the connecting block 43 through a hinge 48 to change the distance between the two to achieve detachable matching of the adjusting sleeve 42 and the first control rod 31 and the second control rod 32; both the left and right mounting pieces 45 are provided with There is a mounting plate 46, and corresponding mounting holes 47 are provided on the mounting plate 46; after the first control rod 31 or the second control rod 32 is located between the left and right mounting plates 45, the mounting plates 46 on the left and right mounting plates 45 are fastened by the cooperation of bolts, nuts and mounting holes 47 so that the left mounting plate 44 and the right mounting plate 45 are close to each other to achieve the assembly of the adjustment sleeve 42; when the adjustment sleeve 42 needs to be disassembled, the nuts are loosened and the first control rod 31 and the second control rod 32 are removed from between the left and right mounting plates 45; in this embodiment, the left mounting plate 44 is fixed to the connecting block 43, and the right mounting plate 45 is adjustably assembled on the connecting block 43 by a hinge 48.

[0051] In the present invention, a limit block 35 is provided at the end of the first connecting end 33 of the first control rod 31 and the second control rod 32, and the limit block 35 is located on the outer surface of the first control rod 31 and the second control rod 32 on the side close to the clamping head 13; the limit block 35 includes a connecting area 36 and a contact area 37, the limit block 35 is fixedly connected to the first control rod 31 and the second control rod 32 through the connecting area 36, ​​and the contact area 37 of the upper limit blocks 35 of the first control rod 31 and the second control rod 32 extends to each other's area, and when the first control rod 31 and the second control rod 32 are parallel, the contact areas 37 of the limit blocks 35 on the two control rods abut against each other; through the setting of the limit block 35, the relative position between the two control rods is accurately limited to prevent the control rods from moving excessively; to avoid the first control rod 31 and the second control rod 32 continuing to move to drive the clamping body 1 to close after the first control rod 31 and the second control rod 32 open the clamping body 1 in parallel, causing damage to the equipment.

[0052] The scissor tail 14 is arranged in the movable fitting space 24 so as to be able to move the scissor tail 14 to the movable fitting space 24 when the movable block 23 is moved.

[0053] In the present invention, the control component 3 is detachably assembled on the clamping tail 14; a detachable assembly block 16 is provided on the clamping tail 14 of the first clamping body 11 and the second clamping body 12, and the second connecting ends 34 of the first control rod 31 and the second control rod 32 are rotatably connected to the assembly block 16; the control component 3 is detachably assembled on the clamping tail 14, so that when the control component 3 needs to be maintained, replaced or upgraded, the user can easily remove it from the clamping tail 14, which simplifies the maintenance process, reduces maintenance costs, and improves work efficiency; at the same time, it allows the user to replace control components 3 of different specifications or types according to actual needs to adapt to different shearing tasks or working environments.

[0054] In this embodiment, the assembly block 16 is detachable from the shearing tails 14 of the first shearing body 11 and the second shearing body 12 by means of threaded engagement between the screw hole and the bolt.

[0055] In the present utility model, the pneumatic drive module 2 includes an installation shell 26, and an installation space 27 is provided in the installation shell 26, and the two ends of the installation shell 26 are respectively a top opening 271 and a bottom opening 272; the first clamping body 11 and the second clamping body 12 are assembled in the installation space 27, and the clamping heads 13 of the first clamping body 11 and the second clamping body 12 are exposed from the installation space 27 through the top opening 271; the movable block 23 is movably assembled in the installation space 27, and the clamping tails 14 of the first clamping body 11 and the second clamping body 12 cooperate with the movable cooperation space 24; the driving part 21 is assembled at the bottom opening 272 of the installation shell 26 to cooperate with the movable part 22 and drive it to move; a reset spring 28 is also provided in the installation space 27, and the two ends of the reset spring 28 respectively abut against the inner wall of the movable block 23 and the installation space 27; the installation and cooperation of the clamping body 1 and the pneumatic drive module 2 are realized through the setting of the installation shell 26.

[0056] In this embodiment, a connecting shaft 17 is used in the middle of the first clamping body 11 and the second clamping body 12 to achieve a movable connection between the two, so that the two can rotate relative to each other; and the connecting shaft 17 is connected to the mounting shell 26 to achieve the fixation of the first clamping body 11 and the second clamping body 12.

[0057] In the present invention, a movable limit assembly 6 is also provided in the mounting housing 26; the movable limit assembly 6 includes a movable rod 61, a limit rod 62 and a transmission member 63; the transmission member 63 adopts a gear, and the movable rod 61 and the limit rod 62 are located on both sides of the gear, and the movable rod 61 and the limit rod 62 are provided with matching teeth 64, which mesh with the gear through the matching teeth 64; the limit rod 62 is located on the side of the gear close to the shearing body 1, and the movable rod 61 is located on the side of the gear close to the driving part 21; the outer surface of the movable block 23 is provided with a matching portion 231 arranged along its circumference; the diameter of the matching portion 231 is different at each place, and the diameter of the side close to the top opening 271 is smaller than the diameter of the side close to the bottom opening 272, and the outer surface of the matching portion 231 is a smoothly inclined contact surface 232; the end of the movable rod 61 abuts against the contact surface 232, and is moved under the drive of the movable block 23 When the movable block 23 moves toward the clamping shear head 13, the movable rod 61 retracts, and when the movable rod 61 retracts, the gear rotates, thereby driving the limit rod 62 to extend outward, and the extended limit rod 62 is in the movable path of the matching portion 231; the movable block 23 gradually approaches the clamping shear body 1 under the drive part 21. At this time, the matching portion 231 and the contact surface 232 on the matching portion 231 move with the movable block 23 and drive the movable rod 61 to retract. When the movable rod 61 retracts, it drives the gear to rotate, and then drives the limit rod 62 to extend outward, and the matching portion 231 abuts against the extended limit rod 62 to limit the movement of the movable block 23; the movable limit assembly 6 limits the moving path of the movable block 23 through the mutual cooperation of the movable rod 61, the limit rod 62 and the gear; to avoid excessive movement of the movable block 23, which causes excessive clamping between the first clamping shear body 11 and the second clamping shear body 12, causing damage to the clamping shear head 13.

[0058] In this embodiment, a mounting block 273 is provided on the inner wall of the mounting space 27, and the return spring 28 is located between the mounting block 273 and the movable block 23, and one end of the return spring 28 abuts or is fixed to the mounting block 273; the movable block 23 is columnar, and the other end of the return spring 28 is sleeved on the movable block 23 and abuts against the mating portion 231 to achieve stable assembly of the return spring 28.

[0059] In this embodiment, the end of the mating portion 231 that abuts against the return spring 28 is also provided with an outwardly extending abutment block 233; the diameter of the abutment block 233 is larger than the diameter of the contact surface 232 on the side close to the top opening 271; when the limiting rod 62 extends outward, it is in the movable path of the abutment block 233, and the abutment block 233 abuts against the limiting rod 62 to limit the movement of the movable block 23.

[0060] In this embodiment, an assembly space 29 is also provided in the mounting shell 26, and the movable limit assembly 6 is provided in the assembly space 29; the assembly space 29 includes a first area 291, a second area 292 and a third area 293; the second area 292 is located between the first area 291 and the third area 293, and is connected to both of them, wherein the first area 291 is located on the side of the second area 292 close to the clamping body 1, and the third area 293 is located on the side of the second area 292 close to the driving part 21; the limit rod 62 is movable in the first area 291, the movable rod 61 is movable in the third area 293, the gear is in the second area 292, and the matching teeth 64 of the limit rod 62 and the movable rod 61 are located in the second area 292 and cooperate with the gear; the first area 291 and the third area 293 are both connected to the mounting space 27 to realize the telescopic movement of both the limit rod 62 and the movable rod 61.

[0061] It is worth noting that after the limiting rod 62 is extended, the extended length thereof is only enough to abut against the abutting block 233 to avoid affecting the restoring effect of the restoring spring 28 .

[0062] In this embodiment, guide blocks 294 are provided at both ends of the second area 292, and limiting channels 295 are formed at both ends of the first area 291 and the third area 293 through the distance between the guide blocks 294 and the inner wall of the assembly space 29; the space at the limiting channel 295 matches the size of the limiting rod 62 and the movable rod 61 where the matching teeth 64 are not provided, and then the limiting channel 295 is used to limit the directional path of both the limiting rod 62 and the movable rod 61 during telescopic movement to prevent them from tilting; at the same time, the gear and the matching teeth 64 engaged with the gear are located between the guide blocks 294, thereby controlling the telescopic distance between the limiting rod 62 and the movable rod 61.

[0063] In this embodiment, a compression spring 296 is also provided in the third area 293, and the two ends of the compression spring 296 respectively abut against the inner wall of the third area 293 and the end of the movable rod 61 away from the contact surface 232, so that after the movable block 23 is reset, the compression spring 296 can drive the movable rod 61 to reset, and at the same time, when the movable rod 61 is reset, it drives the gear and the limit rod 62 to reset, so as to realize the overall reset of the movable limit assembly 6.

[0064] In the present invention, the shearing head 13 of the first shearing body 11 or the second shearing body 12 is equipped with a blade 7; the width of the shearing head 13 not equipped with a blade 7 gradually changes from small to large from the shearing head 13 far away from the shearing tail 14 to the shearing tail 14, so that the device can perform shearing work in a relatively small space.

[0065] In this embodiment, the blade 7 is detachably mounted on the shearing head 13 , making it easy for people to maintain and replace the blade 7 .

[0066] It is worth noting that other technical solutions of the present invention belong to the existing technology and are therefore not described in detail.

[0067] The above is only a preferred embodiment of the present invention. It should be pointed out that ordinary technicians in this technical field can make several improvements and modifications without departing from the concept of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A pneumatic shears, comprising a shears body and a pneumatic drive module; characterized in that: The shearing body comprises a first shearing body and a second shearing body that are movably matched; the front ends of the first shearing body and the second shearing body are shearing heads, and the rear ends are shearing tails; A control component for controlling the opening and closing of the first and second clamping shear bodies is provided between the clamping tails of the first and second clamping shear bodies; a pneumatic drive module includes a driving part and a movable part driven by the driving part, and an adjusting component is also provided on the movable part to move with the movable part; the adjusting component cooperates with the control component, and the control component state is adjusted by the adjusting component to control the first and second clamping shear bodies. The second shearing body is in the open and closed state.

2. The pneumatic scissors according to claim 1, characterized in that: The control assembly includes a first control rod and a second control rod, wherein the first control rod and the second control rod have first connecting ends and second connecting ends respectively; the first connecting ends of the first control rod and the second control rod are rotatably connected to each other, the second connecting end of the first control rod is rotatably connected to the clipping tail of the first clipping body, and the second connecting end of the second control rod is rotatably connected to the clipping tail of the second clipping body; The adjustment assembly includes an adjustment rod and an adjustment sleeve, one end of the adjustment rod is fixedly connected to the movable part, and the other end of the adjustment rod is rotatably connected to the adjustment sleeve; the adjustment sleeve is assembled and connected to the first connecting end of the first control rod and / or the second control rod.

3. The pneumatic scissors according to claim 2, characterized in that: The second connecting ends of the first control rod and the second control rod are on the same straight line; the connection between the first control rod and the second control rod and the connection between the first clamping body and the second clamping body are on the same straight line; when the control assembly moves, the moving path of the connection between the first control rod and the second control rod is perpendicular to the straight line where their second connecting ends are located; the first control rod and the second control rod have the same length.

4. The pneumatic scissors according to claim 3, characterized in that: There are two groups of adjustment components, and each group of adjustment components has an adjustment rod and an adjustment sleeve; when the clamping heads of the first clamping body and the second clamping body abut against each other during the shearing action, there is a gap between the clamping tails of the two, and the ends of the adjustment sleeves of the two adjustment rods in the two adjustment components are located in the gap, and the two adjustment rods are respectively provided corresponding to the first control rod and the second control rod, and the adjustment sleeves on the two adjustment rods cooperate with the first control rod and the second control rod respectively.

5. The pneumatic scissors according to claim 4, characterized in that: A limit block is provided at the end of the first connecting end of the first control rod and the second control rod, and the limit block is located on the outer surface of the first control rod and the second control rod close to the shearing head; the limit block includes a connection area and a contact area, and the limit block is fixedly connected to the first control rod and the second control rod through the connection area, and the contact areas of the upper limit blocks of the first control rod and the second control rod extend to each other's area, and when the first control rod and the second control rod are parallel, the contact areas of the limit blocks on the two control rods abut against each other.

6. The pneumatic scissors according to claim 5, characterized in that: The movable part includes a movable block, a movable matching space is set in the movable block, and a matching opening is set at one end of the movable block facing the scissor clamp body, and the scissor clamp tail is located in the movable matching space; the inner diameter of the movable matching space gradually changes from large to small from one end where the matching opening is set to the other end, and the inner wall of the movable matching space is a smooth inclined surface; the adjusting rod is in the movable matching space, and the bottom end of the adjusting rod is fixedly connected to the inner wall of the movable matching space.

7. The pneumatic scissors according to claim 6, characterized in that: The control assembly is detachably assembled on the clamping tail; the clamping tails of the first clamping body and the second clamping body are provided with detachable assembly blocks, and the second connecting ends of the first control rod and the second control rod are rotatably connected to the assembly blocks.

8. The pneumatic scissors according to claim 6, characterized in that: The pneumatic drive module includes a mounting shell, an mounting space is provided in the mounting shell, and the two ends of the mounting shell are respectively a top opening and a bottom opening; the first and second clamping shear bodies are assembled in the mounting space, and the clamping heads of the first and second clamping shear bodies are exposed from the mounting space through the top opening; the movable block is movably assembled in the mounting space, and the clamping tails of the first and second clamping shear bodies are matched with the movable matching space; the driving part is assembled at the bottom opening of the mounting shell and matches with the movable part, and drives its movement; A return spring is also provided in the installation space, and two ends of the return spring are respectively in contact with the movable block and the inner wall of the installation space.

9. The pneumatic scissors according to claim 8, characterized in that: A movable limit assembly is also provided in the mounting housing; the movable limit assembly includes a movable rod, a limit rod and a transmission member; the transmission member is a gear, the movable rod and the limit rod are located on both sides of the gear, and both the movable rod and the limit rod are provided with matching teeth, which mesh with the gear through the matching teeth; the limit rod is located on the side of the gear close to the shear clamping body, and the movable rod is located on the side of the gear close to the driving part; The outer surface of the movable block is provided with a matching portion arranged along its circumference; the diameters of the matching portions are different at different places, and the diameter of the side close to the top opening is smaller than the diameter of the side close to the bottom opening, and the outer surface of the matching portion is a smoothly inclined contact surface; the end of the movable rod abuts against the contact surface and moves under the drive of the movable block; when the movable rod retracts, it drives the gear to rotate, thereby driving the limit rod to extend outward, and the extended limit rod is on the movable path of the matching portion.

10. The pneumatic scissors according to claim 1, characterized in that: The shearing head of the first shearing body or the second shearing body is equipped with a blade; the width of the shearing head not equipped with a blade gradually changes from small to large from the part of the shearing head far from the shearing tail to the part close to the shearing tail.

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