A clamp

Abstract

The application provides a clamp, which comprises a first clamping arm and a second clamping arm, a first sliding groove is formed in the first clamping arm, a second sliding groove is formed in the second clamping arm, the first clamping arm and the second clamping arm are connected through a connecting shaft and are rotationally matched, and the first clamping arm and the second clamping arm are arranged at an angle; the clamp further comprises a driving assembly, the driving assembly comprises a driving rod, the two ends of the driving rod are respectively provided with a first matching column and a second matching column, the first matching column is clamped in the first sliding groove and is slidably connected with the first clamping arm, and the second matching column is clamped in the second sliding groove and is slidably connected with the second clamping arm; wherein when one matching column of the driving rod moves along the first sliding groove, the second matching column is driven to slide along the second sliding groove, so that the second clamping arm and the first clamping arm are clamped or released. The clamp provided by the application can greatly reduce the overall weight of the clamp, is favorable for improving the movement speed of the main arm, and further improves the production efficiency.

Description

Technical Field

[0001] This application relates to the field of automated stamping, and specifically to a clamp. Background Technology

[0002] In automated stamping workshops, the traditional clamps used on the main arms of multi-station lines consist of a clamp body, upper clamp arm, lower clamp arm, upper chuck, side plates, and air connectors. The clamp arms open and close by switching between two air paths via an air source through the air connector. However, the traditional clamps also have the following drawbacks:

[0003] For example, its large size and long clamping arm will interfere with the outer edge of the lower mold and the internal guide pillars when fully opened, making it impossible to reach a reasonable clamping position. During movement, it is also prone to interfering with the outer edge of the upper mold. At the same time, the opening and closing angle is fixed, making it difficult to clamp or remove pieces with large flanges. In addition, its own weight causes excessive load on the main arm and increases the burden on the motor, making it impossible to meet the needs of efficient and stable production. Utility Model Content

[0004] To solve, or at least partially solve, the above-mentioned technical problems, this application provides a clamp, comprising:

[0005] The first clamping arm has a first sliding groove on it;

[0006] The second clamping arm has a second sliding groove. The first clamping arm and the second clamping arm are connected and rotated together by a connecting shaft, and the axes of the first clamping arm and the second clamping arm are set at an angle.

[0007] The drive assembly includes a drive rod, with a first mating post and a second mating post at each end. The first mating post is engaged in the first sliding groove and slidably connected to the first clamping arm, and the second mating post is engaged in the second sliding groove and slidably connected to the second clamping arm.

[0008] When the first mating post of the drive rod moves along the first slide groove, it drives the second mating post to slide along the second slide groove, thereby driving the second clamping arm to clamp or release the first clamping arm.

[0009] Optionally, the clamping end of the first clamping arm is located at the end of the connecting shaft opposite to the first slide groove, and the clamping end of the second clamping arm is located at the end of the connecting shaft opposite to the second slide groove;

[0010] The second clamping arm is provided with a clamp, which is located at the end of the second clamping arm facing the first clamping arm.

[0011] Optionally, the distance between the chuck and the first clamping arm is adjustable.

[0012] Optionally, one end of the chuck is provided with a stud, and the second clamping arm is provided with a mating hole;

[0013] The stud passes through the mating hole and is connected to the second clamping arm via a lock nut.

[0014] Optionally, the drive assembly further includes a housing having a receiving cavity;

[0015] A piston is provided at one end of the drive rod, and the piston is located in the accommodating cavity. The outer shell is also provided with a first air connector and a second air connector. The first air connector and the second air connector are used to fill the accommodating cavity with air or to discharge the gas in the accommodating cavity, so as to drive the drive rod to drive the second clamping arm to clamp or release the first clamping arm.

[0016] Optionally, one end of the housing is provided with two protrusions, which are spaced apart and form a mating groove;

[0017] Each of the two protruding parts has a snap-fit ​​hole, and the opposite ends of the connecting shaft are respectively snapped into the snap-fit ​​hole.

[0018] Optionally, one end of the drive rod extends at least partially into the mating groove, and the first clamping arm and the second clamping arm are at least partially located within the mating groove.

[0019] Optionally, a bottom plate is provided on one side of the outer casing, and the bottom plate is used to seal the accommodating cavity;

[0020] The bottom plate has a buffer pad on the side facing the accommodating cavity.

[0021] Optionally, the base plate and the housing are detachably connected via multiple threaded connectors.

[0022] Optionally, the housing is further provided with a connecting seat, and the connecting seat is provided with a spherical connector, which is used to cooperate with an external device.

[0023] The clamp provided in this application has a first clamping arm and a second clamping arm that are rotatably connected by a connecting shaft in the middle. This reduces the overall height of the first and second clamping arms when they are fully open. When they are closed, the clamping force on the material is significantly increased. At the same time, the design of the first and second clamping arms and the drive rod greatly reduces the overall weight of the clamp, which is conducive to increasing the movement speed of the main arm and thus improving production efficiency. Attached Figure Description

[0024] To more clearly illustrate the embodiments of this application, the relevant drawings will be briefly described below. It is understood that the drawings described below are only for illustrating some embodiments of this application, and those skilled in the art can obtain many other technical features and connections not mentioned herein based on these drawings.

[0025] Figure 1 This is a schematic diagram of the clamp structure of this application;

[0026] Figure 2 This is a rear view of the clamps at one angle in this application;

[0027] Figure 3 for Figure 2 A cross-sectional view of the clamps along AA;

[0028] Figure 4 for Figure 1 A schematic diagram of the explosive structure of the clamp.

[0029] 1. First clamping arm; 11. First sliding groove;

[0030] 2. Second clamping arm; 21. Second slide groove; 22. Chuck; 23. Stud; 24. Mating hole; 25. Locking nut;

[0031] 3. Drive assembly; 31. Drive rod; 311. Piston; 32. First mating post; 33. Second mating post; 34. Housing; 341. Connecting seat; 342. Spherical connector; 35. Receiving cavity; 36. First air connector; 37. Second air connector; 38. Protrusion; 381. Mating groove; 382. Snap-fit ​​hole; 39. Base plate; 391. Buffer pad;

[0032] 4. Connecting shaft. Detailed Implementation

[0033] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application and are therefore merely examples, and should not be used to limit the scope of protection of this application.

[0034] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0035] The following flowchart illustrates the operations performed to improve the safety performance of a vehicle. It should be understood that, depending on the actual situation, the preceding or following operations may not be performed precisely in sequence. Other operations may be added to these processes, or one or more operations may be removed from them.

[0036] The technical solutions in the embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0037] Please refer to Figures 1 to 4 This application proposes a clamp, including a first clamping arm 1 and a second clamping arm 2. The first clamping arm 1 has a first sliding groove 11, and the second clamping arm 2 has a second sliding groove 21. The first clamping arm 1 and the second clamping arm 2 are connected and rotatably engaged by a connecting shaft 4, and the axes of the first clamping arm 1 and the second clamping arm 2 are set at an angle. It also includes a drive assembly 3, which includes a drive rod 31. The two ends of the drive rod 31 are respectively provided with a first mating post 32 and a second mating post 33. The first mating post 32 is engaged in the first sliding groove 11 and slidably connected to the first clamping arm 1, and the second mating post 33 is engaged in the second sliding groove 21 and slidably connected to the second clamping arm 2. When one mating post of the drive rod 31 moves along the first sliding groove 11, it drives the second mating post 33 to slide along the second sliding groove 21, thereby driving the second clamping arm 2 to clamp or release the first clamping arm 1.

[0038] That is, the first clamping arm 1 and the second clamping arm 2 are rotatably connected by the connecting shaft 4 in the middle, which reduces the overall height of the first clamping arm 1 and the second clamping arm 2 in the fully open state. When the two are closed, the clamping force on the material can be significantly increased. At the same time, the design of the first and second clamping arms 2 and the drive rod 31 greatly reduces the overall weight of the clamp, which is conducive to improving the movement speed of the clamp and thus improving production efficiency.

[0039] The sheet material here is the clamping target of the first clamping arm 1 and the second clamping arm 2. The example here is a sheet material, but the specific type of clamping target is not limited.

[0040] For the second clamping arm 2, the clamping angle between it and the first clamping arm 1 can be 0°, 15° or 30°, which can be adjusted according to actual needs and is not limited here.

[0041] Please continue to refer to Figure 1 The clamping end of the first clamping arm 1 is located at the end of the connecting shaft 4 away from the first slide groove 11, and the clamping end of the second clamping arm 2 is located at the end of the connecting shaft 4 away from the second slide groove 21; the second clamping arm 2 is provided with a chuck 22, which is located at the end of the second clamping arm 2 facing the first clamping arm 1.

[0042] That is, by placing the clamping end and the slide groove on both sides of the connecting shaft 4, interference with the clamping of the material sheet can be avoided when the drive component 3 moves. And by setting the chuck 22 toward the first clamping arm 1, it can be ensured that the chuck 22 can accurately fit the material sheet during clamping, thereby improving clamping stability and reducing the risk of the material sheet falling off during transportation.

[0043] Optionally, the distance between the chuck 22 and the first clamping arm 1 is adjustable.

[0044] With this configuration, the distance between the chuck 22 and the first clamping arm 1 can be flexibly adjusted according to the thickness, size and other specifications of the sheet, so that the clamp can be adapted to sheets of different thicknesses, avoiding the problem that traditional fixed-spacing clamps cannot adapt to a variety of sheets, and greatly improving the versatility and applicability of the clamp.

[0045] Please continue to refer to Figures 2 to 4 One end of the chuck 22 is provided with a stud 23, and the second clamping arm 2 is provided with a mating hole 24; the stud 23 passes through the mating hole 24 and is connected to the second clamping arm 2 through a locking nut 25.

[0046] That is, by engaging the stud 23 with the mating hole 24 and securing it with the locking nut 25, the chuck 22 and the first mating arm can not only be easily adjusted in relative distance, but also ensure that the position of the chuck 22 is stable after adjustment, preventing the chuck 22 from loosening during clamping and causing relative displacement of the material. At the same time, the threaded connection structure is simple and easy to operate, facilitating the maintenance and replacement of the chuck 22 in the future.

[0047] Please refer to Figure 1 and Figure 4 The drive assembly 3 also includes a housing 34, which has a receiving cavity 35. One end of the drive rod 31 is provided with a piston 311, which is located in the receiving cavity 35. The housing 34 is also provided with a first air connector 36 and a second air connector 37. The first air connector 36 and the second air connector 37 are used to fill or discharge the gas in the receiving cavity 35, so as to drive the drive rod 31 to drive the second clamping arm 2 to clamp or release the first clamping arm 1.

[0048] This application employs a pneumatic drive system. The first air connector 36 and the second air connector 37 control the inflation and deflation of the accommodating cavity 35, achieving stable reciprocating motion of the drive rod 31, which in turn drives the first clamping arm 1 and the second clamping arm 2 to open and close. Compared to traditional drive structures, pneumatic drive offers faster response and smoother operation. Furthermore, the design of the outer shell 34 and the accommodating cavity 35 protects the piston 311 and the drive rod 31, thereby reducing wear from dust, oil, and other contaminants on the drive assembly 3 and extending its service life.

[0049] Specifically, when the cylinder retracts, the first clamping arm 1 and the second clamping arm 2 close to clamp the parts. The lever arm of the first clamping arm 1 and the second clamping arm 2 in this application is smaller, and the vibration generated when clamping and retracting is smaller, which greatly reduces the vibration of the end effector compared with the traditional push rod type.

[0050] Specifically, the outer casing 34 has two protrusions 38 at one end, the two protrusions 38 are spaced apart and form a mating groove 381; the two protrusions 38 are respectively provided with snap-fit ​​holes 382, ​​and the opposite ends of the connecting shaft 4 are respectively snapped into the snap-fit ​​holes 382.

[0051] That is, the mating groove 381 formed by the two protrusions 38 provides a stable installation space for the first clamping arm 1 and the second clamping arm 2, so that the first clamping arm 1 and the second clamping arm 2 fit the structure of the outer shell 34 more closely when they move, reducing shaking.

[0052] The connecting shaft 4 is fixed by the snap-fit ​​hole 382 to ensure more precise rotational engagement with the first clamping arm 1 and the second clamping arm 2, and to prevent the opening and closing angle deviation of the first clamping arm 1 and the second clamping arm 2 from being caused by the offset of the connecting shaft 4, thus ensuring the accuracy of the clamping action.

[0053] In one embodiment, one end of the drive rod 31 extends at least partially into the mating groove 381, and the first clamping arm 1 and the second clamping arm 2 are at least partially located within the mating groove 381.

[0054] By placing the end of the drive rod 31 and portions of the first clamping arm 1 and the second clamping arm 2 within the mating groove 381, the connection structure between the drive assembly 3 and the first clamping arm 1 and the second clamping arm 2 can be made more compact, significantly reducing the overall size of the clamp and avoiding the problems of traditional clamps being too large and easily interfering with the mold due to their dispersed structure. At the same time, the compact structure can also shorten the drive transmission path and improve the response speed of the clamping action.

[0055] Furthermore, a bottom plate 39 is provided on one side of the outer casing 34, which is used to seal the accommodating cavity 35; a buffer pad 391 is provided on the side of the bottom plate 39 facing the accommodating cavity 35.

[0056] That is, the base plate 39 is used to seal the accommodating cavity 35 to prevent gas leakage from affecting the pneumatic drive effect, and at the same time facilitates the maintenance of the internal components of the accommodating cavity 35.

[0057] The buffer pad 391 is used to buffer the piston 311 when it moves to the end of the receiving cavity 35, so as to avoid the piston 311 from directly colliding with the base plate 39 and causing wear or noise, extend the service life of the piston 311 and the base plate 39, and improve the stability and quietness of the clamp operation.

[0058] Optionally, the base plate 39 and the housing 34 are detachably connected by a plurality of threaded fasteners.

[0059] Threaded connectors are used for the detachable connection between the base plate 39 and the outer shell 34. Compared with fixing methods such as welding, it is easier to disassemble the base plate 39 later to maintain, replace or clean the piston 311, drive rod 31 and other components in the accommodating cavity 35, reducing the difficulty and cost of maintenance and improving the maintenance convenience of the clamp.

[0060] Furthermore, the outer casing 34 is also provided with a connector 341, and the connector 341 is provided with a spherical connector 342, which is used to cooperate with external devices.

[0061] In other words, the spherical connector 342 has multi-angle rotation characteristics, which allows the clamp to be flexibly adjusted according to the actual clamping requirements when connected to external equipment, such as the main arm of a multi-station line, to adapt to the spatial position of different molds.

[0062] Furthermore, the mating structure between the connector 341 and the ball connector 342 is stable, ensuring that the clamps are not easily loosened when moving with external equipment, thus guaranteeing the safety of the material transfer process.

[0063] In one embodiment, the connecting seat 341 and the base plate 39 are integrally formed; in some other optional embodiments, the connecting seat 341 and the base plate 39 may also be arranged separately, and the specific positions are not limited here.

[0064] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different obstacle objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0065] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0066] In the description of the embodiments of this application, the technical terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" 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 the embodiments of this application and simplifying the description, and are not intended to 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 the embodiments of this application.

[0067] In the description of the embodiments of this application, unless otherwise expressly specified and limited, the technical terms such as "installation", "connection", "joining", and "fixing" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can also refer to mechanical connections. For those skilled in the art, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0068] While this application discloses preferred embodiments as described above, it is not intended to limit the scope of this application. Any changes and modifications can be made by those skilled in the art without departing from the spirit and scope of this application. Therefore, any modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this application without departing from the content of the technical solution of this application shall fall within the protection scope defined by the claims of this application.

Claims

1. A clamp, characterized in that, include: The first clamping arm has a first sliding groove on it; The second clamping arm has a second sliding groove. The first clamping arm and the second clamping arm are connected and rotated together by a connecting shaft, and the axes of the first clamping arm and the second clamping arm are set at an angle. The drive assembly includes a drive rod, with a first mating post and a second mating post at each end. The first mating post is engaged in the first sliding groove and slidably connected to the first clamping arm, and the second mating post is engaged in the second sliding groove and slidably connected to the second clamping arm. When the first mating post of the drive rod moves along the first slide groove, it drives the second mating post to slide along the second slide groove, thereby driving the second clamping arm to clamp or release the first clamping arm.

2. The clamp according to claim 1, characterized in that, The clamping end of the first clamping arm is located at the end of the connecting shaft opposite to the first slide groove, and the clamping end of the second clamping arm is located at the end of the connecting shaft opposite to the second slide groove; The second clamping arm is provided with a clamp, which is located at the end of the second clamping arm facing the first clamping arm.

3. The clamp according to claim 2, characterized in that, The distance between the chuck and the first clamping arm is adjustable.

4. The clamp according to claim 3, characterized in that, One end of the chuck is provided with a stud, and the second clamping arm is provided with a mating hole; The stud passes through the mating hole and is connected to the second clamping arm via a lock nut.

5. The clamp according to claim 1, characterized in that, The drive assembly also includes a housing having a receiving cavity inside; A piston is provided at one end of the drive rod, and the piston is located in the accommodating cavity. The outer shell is also provided with a first air connector and a second air connector. The first air connector and the second air connector are used to fill the accommodating cavity with air or to discharge the gas in the accommodating cavity, so as to drive the drive rod to drive the second clamping arm to clamp or release the first clamping arm.

6. The clamp according to claim 5, characterized in that, The outer casing has two protrusions at one end, and the two protrusions are spaced apart and form a mating groove; Each of the two protruding parts has a snap-fit ​​hole, and the opposite ends of the connecting shaft are respectively snapped into the snap-fit ​​hole.

7. The clamp according to claim 6, characterized in that, One end of the drive rod extends at least partially into the mating groove, and the first clamping arm and the second clamping arm are at least partially located within the mating groove.

8. The clamp according to claim 5, characterized in that, A bottom plate is provided on one side of the outer shell, and the bottom plate is used to seal the accommodating cavity; The bottom plate has a buffer pad on the side facing the accommodating cavity.

9. The clamp according to claim 8, characterized in that, The base plate and the outer shell are detachably connected by multiple threaded connectors.

10. The clamp according to claim 5, characterized in that, The outer casing is also provided with a connecting seat, and the connecting seat is provided with a spherical connector, which is used to cooperate with external devices.

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