A clamping mechanism for a clamp body

Abstract

The present invention relates to a clamping mechanism of a pliers body, comprising: a connecting portion; and at least two clamping portions circumferentially arranged on the side wall of the connecting portion, which are used to clamp a workpiece; wherein the workpiece comprises a pliers body and a hook claw extending outward from one end of the pliers body, and a shoulder with an arc-shaped surface is formed at a portion where the hook claw is integrally combined with the pliers body; the clamping portion comprises a first clamping module corresponding to the pressed shoulder and a second clamping module for clamping the other end of the workpiece, a first clamping jaw is pivotally connected to the first clamping module, and the first clamping module and the second clamping module are driven to close together by a driver in the clamping portion, and the first clamping jaw is driven to rotate to adjust the first clamping jaw to fit on the shoulder, and maintain the contact position of the first clamping jaw with the workpiece to ensure the gripping effect of the first clamping jaw. The clamping mechanism has a simple structure and is easy to use.

Description

Technical Field

[0001] The invention relates to the field of non-standard automatic assembly, and in particular to a clamping mechanism of a clamp body. Background Art

[0002] In the field of non-standard automation, during the process of installing the clamp body, the inventors found that the clamping mechanism in the prior art has at least the following problems:

[0003] Firstly, since the shape and structure of the pliers body itself is relatively complex and its surface is often an arc-shaped surface, it is difficult for the jaws on a general clamping mechanism to accurately grasp a fixed position when clamping the pliers body, which can easily cause vacancies in some areas of the jaws, reducing the contact area, resulting in excessive pressure and easily causing damage to the pliers body. At the same time, since the contact area between the jaws and the pliers body is reduced, the clamping effect of the jaws is not ideal and it is easy to slip.

[0004] In view of this, it is necessary to develop a clamping mechanism for a pliers body to solve the above problems. Summary of the invention

[0005] In view of the deficiencies in the prior art, the main purpose of the present invention is to provide a clamping mechanism of a pliers body, which maintains the contact position between the first clamping jaw and the workpiece through a rotatable first clamping jaw to ensure the gripping effect of the first clamping jaw.

[0006] Another object of the present invention is to provide a clamping mechanism which increases the contact area and the friction between the clamping jaw and the workpiece by deflecting the first clamping jaw, so as to ensure the gripping effect.

[0007] In order to achieve the above-mentioned purpose and other advantages according to the present invention, a clamping mechanism of a pliers body is provided, comprising:

[0008] a connecting portion; and

[0009] At least two clamping parts circumferentially arranged on the side wall of the connecting part, which are used to clamp the workpiece;

[0010] The workpiece includes a pliers body and a hook extending outward from one end of the pliers body, and a shoulder with an arc-shaped surface is formed at a portion where the hook is integrated with the pliers body;

[0011] The clamping part includes a first clamping module corresponding to the pressing shoulder and a second clamping module for clamping the other end of the workpiece. The first clamping module is pivotally connected to the first clamping jaw. The first clamping module and the second clamping module are driven together by a driver in the clamping part, and the first clamping jaw is driven to rotate to adjust until the first clamping jaw is in contact with the shoulder.

[0012] Preferably, the first clamping jaw comprises a connecting column and a protruding clamping end extending outwardly from one side of the connecting column;

[0013] There are two hooks, the position of the clamping end corresponds to the hook, and the clamping end is arranged along the extension direction of the connecting column.

[0014] Preferably, a buffer block is installed on the side of the clamping end corresponding to the hook claw, and when the first clamping claw is pressed onto the workpiece, the buffer block is elastically deformed to fit the hook claw.

[0015] Preferably, the second clamping module comprises a clamping jaw support and a second clamping jaw mounted on the clamping jaw support;

[0016] A hanging ear is arranged on the other end of the clamp body opposite to the hook claw, and the hanging ear is formed by extending outwards from both sides of the clamp body, and the second clamping claw abuts against the bottom of the hanging ear.

[0017] Preferably, the clamping jaw bracket is C-shaped, and the second clamping jaw is installed at both ends of the clamping jaw bracket.

[0018] Preferably, the surface of the second clamping jaw in contact with the hanging ear is provided with undulating tooth-shaped protrusions to form the contact surface of the second clamping jaw.

[0019] Preferably, the first clamping module comprises a base, and the first clamping jaw is pivotally connected to the base.

[0020] Preferably, the base is provided with a through slot penetrating two opposite side surfaces thereof, and the first clamping jaw is arranged in the through slot.

[0021] Preferably, the base is further installed with a mounting plate, and the mounting plate covers the through slot, so that a receiving cavity for the first clamping jaw is formed between the base and the mounting plate;

[0022] A pin shaft groove is provided on the surface of the first clamping jaw, and the pin shaft groove on the first clamping jaw and the deep groove on the inner wall of the through groove form an installation position of the pin shaft, so that the first clamping jaw can rotate around the axis direction of the pin shaft.

[0023] Preferably, an elastic layer is provided between the first clamping claw and the mounting plate, and the surface of the hook claw is inclined downward relative to the shoulder to form a slope;

[0024] After the first clamp is pressed on the shoulder, the first clamp is driven by the driver to press the elastic layer to deform the elastic layer, so that the first clamp is deflected radially downward of the pin shaft, and then the first clamp is tilted to fit the slope.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] The present invention provides a clamping mechanism of a pliers body. Through a rotatable first clamping jaw, when a driver drives two clamping molds to close, the first clamping jaw and the workpiece are maintained at a relatively fixed force point, thereby ensuring the clamping effect. At the same time, the number of force points between the first clamping jaw and the shoulder is guaranteed, avoiding the problem of increased pressure at the force point position caused by a reduction in the number of force points. The clamping mechanism has a simple structure and is easy to maintain.

[0027] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the present invention in conjunction with the accompanying drawings. The specific implementation of the present invention is given in detail by the following embodiments and their accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0029] Figure 1 is a schematic diagram of a three-dimensional structure in one embodiment of the present invention;

[0030] Figure 2 It is a schematic diagram of the three-dimensional structure of the clamping part in one embodiment of the present invention from a first viewing angle;

[0031] Figure 3 A schematic diagram of a three-dimensional structure of a clamping portion in an embodiment of the present invention from a second viewing angle;

[0032] Figure 4 A partial cross-sectional view of a clamping portion in one embodiment of the present invention;

[0033] Figure 5 for Figure 4 A partial enlarged schematic diagram;

[0034] Figure 6 An exploded schematic diagram of a clamping portion in one embodiment of the present invention;

[0035] Figure 7 It is a schematic diagram of the three-dimensional structure of a workpiece in one embodiment of the present invention.

[0036] Description of reference numerals:

[0037] 41. Connecting part;

[0038] 42. Clamping portion;

[0039] 421, driver;

[0040] 422, first clamping module; 4221, base; 4222, elastic layer; 4223, mounting plate; 4224, pin shaft; 4225, accommodating cavity;

[0041] 423, first clamping claw; 4231, connecting column; 4232, clamping end; 4233, buffer block; 4234, pin shaft groove;

[0042] 424, second clamping module; 4241, clamping jaw support; 4242, second clamping jaw; 42421, contact surface;

[0043] 5. Workpiece;

[0044] 51. Clamp body;

[0045] 52. Ear hooks;

[0046] 53. hook; 531. shoulder; 532. slope. DETAILED DESCRIPTION

[0047] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0048] In the drawings, the shapes and dimensions may be exaggerated for clarity, and the same reference numerals will be used throughout to designate the same or like components.

[0049] Unless otherwise defined, the technical terms or scientific terms used herein shall have the usual meanings understood by persons of ordinary skill in the field to which the present invention belongs. The words "first", "second" and similar words used in the patent application specification of the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, words such as "one", "one" or "the" do not indicate a quantity limitation, but indicate the existence of at least one. Words such as "include" or "comprise" and similar words mean that the elements or objects appearing before "include" or "comprise" cover the elements or objects listed after "include" or "comprise" and their equivalents, and do not exclude other elements or objects. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0050] In the following description, words such as center, thickness, height, length, front, back, rear, left, right, top, bottom, upper, lower, etc. are defined relative to the structure shown in the drawings. In particular, "height" is equivalent to the dimension from top to bottom, "width" is equivalent to the dimension from left to right, and "depth" is equivalent to the dimension from front to back. They are relative concepts and may change accordingly according to their different positions and different usage states. Therefore, these or other directions should not be interpreted as restrictive terms.

[0051] Terms related to attachment, coupling, and the like (eg, "connected" and "attached") refer to either a fixed or attached relationship between structures, either directly or indirectly, and either movable or rigid attachments or relationships, unless expressly stated otherwise, of the structures to one another through intermediate structures.

[0052] According to one embodiment of the present invention, Figure 1 and Figure 2 As shown in the figure, it can be seen that a clamping mechanism of a clamp body includes a connecting portion 41; and at least two clamping portions 42 arranged circumferentially on the side wall of the connecting portion 41, which are used to clamp the workpiece 5; in a preferred embodiment, the number of the clamping portions 42 is three, and the clamping portions 42 are evenly arranged circumferentially on the side of the connecting portion 41, so that multiple workpieces 5 can be transferred in a single transfer process, thereby improving the transfer efficiency;

[0053] The workpiece 5 includes a pliers body 51 and a hook 53 extending outward from one end of the pliers body 51, so that the workpiece 5 is L-shaped as a whole, and a shoulder 531 with an arc-shaped surface is formed at the integral combination of the hook 53 and the pliers body 51; specifically, the shoulder 531 is located at the bending position of the hook 53 and the pliers body 51;

[0054] The clamping portion 42 includes a first clamping module 422 corresponding to the pressing shoulder 531 and a second clamping module 424 for clamping the other end of the workpiece 5. The first clamping module 422 is pivotally connected to the first clamping jaw 423. The driver 421 in the clamping portion 42 drives the first clamping module 422 and the second clamping module 424 to close, and drives the first clamping jaw 423 to rotate to adjust the first clamping jaw 423 to fit on the shoulder 531.

[0055] The two clamping modules of the clamping part 42 respectively clamp the shoulder 531 and the other end of the clamp body 51 corresponding to the shoulder 531. The other end surface of the clamp body 51 is flat, which is convenient for the clamping claw to fit on the clamp body 51. On one end of the shoulder 531, due to the limitation of the shape of the shoulder 531 itself, when the first clamping claw 423 contacts the arc-shaped shoulder 531 surface, when a general clamping mechanism clamps the workpiece 5, the first clamping claw 423 and the shoulder 531 are in a tangent state, resulting in the force point being only at one point. If the placement position of the workpiece 5 is offset before grasping, the force point of the first clamping claw 423 and the shoulder 531 is not at a fixed point, and the driver 421 The two clamping modules are driven together, and the clamping force of the two clamping modules will drive the workpiece 5 to adjust its own position to meet the clamping of the clamping jaws on both sides. At this time, the first clamping jaw 423 and the shoulder 531 have relative sliding positions at the points of application, resulting in a reduction in the friction between the first clamping jaw 423 and the shoulder 531, which can easily cause slippage after grasping. At the same time, in the process of adjusting the workpiece 5, there is also a situation where the point of application of the first clamping jaw 423 is reduced due to the offset of the position of the workpiece 5. In the above case, due to the reduction in the number of points of application, in the project of using the clamping force to adjust the position of the workpiece, the pressure at the point of application of the first clamping jaw 423 and the shoulder 531 is relatively large, causing damage to the workpiece 5.

[0056] In the present embodiment, the first rotatable clamping jaw 423 is used. When the driver 421 drives the two clamping molds to close together, the first clamping jaw 423 is rotated by the support force of the workpiece 5 to adjust to the fixed force point with the shoulder 531. As the driver 421 drives the two clamping molds to close together, the first clamping jaw 423 is driven by the force to drive the workpiece 5 to rotate around the pivot axis. At this time, the force point of the first clamping jaw 423 and the shoulder 531 is relatively fixed, thereby ensuring its clamping effect. In the preferred embodiment shown in the figure, the first clamping jaw 423 includes a connecting column 4231 and a connecting column 4231 facing one side. It extends outward to form a protruding clamping end 4232; there are two hooks 53, the position of the clamping end 4232 corresponds to the hook 53, and the clamping end 4232 is arranged along the extension direction of the connecting column 4231; when the placement position of the workpiece 5 is deflected, driven by the driver 421, the first clamping jaw 423 first conflicts with one of the hooks 53, and the first clamping jaw 423 will rotate due to the supporting force of the conflicting hook 53, thereby preferentially making the first clamping jaw 423 rotate to a position tangent to the two hooks 53, and at this time, the fulcrum points of the first clamping jaw 423 and the two hooks 53 are fixed fulcrum points.

[0057] At the same time, since the first clamping jaw 423 rotates to adjust to a fixed fulcrum point with the shoulder 531, the number of fulcrum points between the first clamping jaw 423 and the shoulder 531 is guaranteed, avoiding the problem of increased pressure at the fulcrum position due to a reduction in the number of fulcrum points.

[0058] A buffer block 4233 is installed on the side of the clamping end 4232 corresponding to the hook claw 53. When the first clamping jaw 423 is pressed onto the workpiece 5, the buffer block 4233 elastically deforms to fit the hook claw 53. The elastic deformation of the buffer block 4233 increases the contact area with the hook claw 53, thereby increasing the friction and reducing the probability of falling off. At the same time, the elastic deformation reduces the damage to the workpiece 5 caused by rigid contact and effectively absorbs the force generated by the impact when the first clamping jaw 423 contacts the workpiece 5.

[0059] The second clamping module 424 includes a clamping claw bracket 4241 and a second clamping claw 4242 installed on the clamping claw bracket 4241;

[0060] A lug 52 is provided on the other end of the clamp body 51 opposite to the hook claw 53. The lug 52 extends outward from both sides of the clamp body 51, and the second clamping claw 4242 abuts against the bottom of the lug 52; specifically, the bottom surface of the lug 52 is a flat surface, which is convenient for clamping the second clamping claw 4242.

[0061] In a preferred embodiment, the ears 52 are arranged on the corresponding two sides of the clamp body 51, the clamp bracket 4241 is C-shaped, and the second clamp 4242 is installed at the two end positions of the clamp bracket 4241, so that the second clamp 4242 on the two ends of the clamp bracket 4241 can extend to the bottom of the ear 52.

[0062] The surface of the second clamping jaw 4242 that contacts the hanging ear 52 is provided with undulating tooth-shaped protrusions to form a contact surface 42421 of the second clamping jaw 4242 , so that the clamping effect of the second clamping jaw 4242 is better.

[0063] In a preferred embodiment, the first clamping module 422 includes a base 4221 , and the first clamping jaw 423 is pivotally connected to the base 4221 .

[0064] The base 4221 is provided with a through slot penetrating two opposite side surfaces thereof, and the first clamping jaw 423 is disposed in the through slot.

[0065] Furthermore, the base 4221 is further installed with a mounting plate 4223, and the mounting plate 4223 covers the through slot, so that a receiving cavity 4225 of the first clamping claw 423 is formed between the base 4221 and the mounting plate 4223;

[0066] A pin groove 4234 is provided on the surface of the first clamping jaw 423, and a deep groove is provided at the position of the through groove corresponding to the pin groove 4234 on the first clamping jaw 423. The pin groove 4234 on the first clamping jaw 423 and the deep groove on the inner wall of the through groove form an installation position for accommodating the pin 4224, so that the first clamping jaw 423 can rotate around the axis direction of the pin 4224.

[0067] Furthermore, an elastic layer 4222 is provided between the first clamping jaw 423 and the mounting plate 4223, and the elastic layer 4222 rebounds and resets to facilitate the next grasping;

[0068] At the same time, the surface of the hook 53 extending outward from the caliper body 51 is tilted downward relative to the shoulder 531 to form a slope 532;

[0069] After the first clamping jaw 423 is pressed on the shoulder 531, the first clamping jaw 423 is driven by the driver 421 to press the elastic layer 4222 to deform the elastic layer 4222, so that the first clamping jaw 423 deflects radially downward of the pin shaft 4224, and then the first clamping jaw 423 tilts and fits the slope 532;

[0070] Through the elastic deformation of the elastic layer 4222, not only the first clamping jaw 423 can rotate around the axis direction of the pin shaft groove 4234, but also the first clamping jaw 423 can rotate around the extension direction of the connecting column 4231 thereon, so that the first clamping jaw 423 is turned over to achieve the purpose of the first clamping jaw 423 being attached to the slope surface 532, thereby increasing the contact area between the first clamping jaw 423 and the workpiece 5, and further improving the clamping effect;

[0071] Specifically, when the driver 421 drives the first clamping module 422, the first clamping jaw 423 first rotates to fit the shoulder 531. As the driver 421 continues to drive, the first clamping module 422 rotates to adjust the position of the workpiece 5. When the driver 421 further drives the first clamping module 422, the first clamping jaw 423 drives the elastic deformation of the elastic layer 4222, so that the first clamping jaw 423 flips over, thereby making the first clamping jaw 423 fit the slope 532 to achieve a better clamping effect.

[0072] Although the embodiments of the present invention have been disclosed as above, they are not limited to the applications listed in the specification and the implementation modes. They can be fully applied to various fields suitable for the present invention. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the present invention is not limited to specific details.

Claims

1. A clamping mechanism of a pliers body, characterized in that: include: A connecting portion (41); as well as At least two clamping portions (42) circumferentially arranged on the side wall of the connecting portion (41), and used for clamping a workpiece (5); The workpiece (5) comprises a pliers body (51) and a hook (53) extending outward from one end of the pliers body (51), wherein the hook (53) and the pliers body (51) are integrally connected to form a shoulder (531) with an arc-shaped surface. The clamping portion (42) comprises a first clamping module (422) corresponding to the pressed shoulder (531) and a second clamping module (424) for clamping the other end of the workpiece (5); the first clamping module (422) is pivotally connected to a first clamping jaw (423); a driver (421) in the clamping portion (42) drives the first clamping module (422) and the second clamping module (424) to close together, and drives the first clamping jaw (423) to rotate so as to adjust the first clamping jaw (423) to fit on the shoulder (531); The first clamping claw (423) comprises a connecting column (4231) and a protruding clamping end (4232) extending outward from a side surface of the connecting column (4231); The number of hook claws (53) is two, the position of the clamping end (4232) corresponds to the hook claw (53), and the clamping end (4232) is arranged along the extension direction of the connecting column (4231); A buffer block (4233) is installed on the side of the clamping end (4232) corresponding to the hook claw (53), and when the first clamping claw (423) is pressed onto the workpiece (5), the buffer block (4233) elastically deforms to fit the hook claw (53); The second clamping module (424) comprises a clamping claw support (4241) and a second clamping claw (4242) mounted on the clamping claw support (4241); A hanging ear (52) is arranged on the other end of the clamp body (51) opposite to the hook claw (53), and the hanging ear (52) is formed by extending outwards from both sides of the clamp body (51), and the second clamp claw (4242) abuts against the bottom of the hanging ear (52); The first clamping module (422) comprises a base (4221), and the first clamping jaw (423) is pivotally connected to the base (4221).

2. The clamping mechanism according to claim 1, characterized in that: The clamping jaw support (4241) is C-shaped, and the second clamping jaw (4242) is installed at both ends of the clamping jaw support (4241).

3. The clamping mechanism according to claim 1, characterized in that: The surface of the second clamping jaw (4242) in contact with the hanging ear (52) is provided with undulating tooth-shaped protrusions to form a contact surface (42421) of the second clamping jaw (4242).

4. The clamping mechanism according to claim 1, characterized in that: The base (4221) is provided with a through slot which passes through two opposite side surfaces thereof, and the first clamping claw (423) is arranged in the through slot.

5. The clamping mechanism according to claim 4, characterized in that: The base (4221) is also installed with a mounting plate (4223), and the mounting plate (4223) covers the through slot, so that a receiving cavity (4225) for the first clamping claw (423) is formed between the base (4221) and the mounting plate (4223); A pin shaft groove (4234) is provided on the surface of the first clamping jaw (423), and the pin shaft groove (4234) on the first clamping jaw (423) and the deep groove on the inner wall of the through groove form an installation position of the pin shaft (4224), so that the first clamping jaw (423) can rotate around the axis direction of the pin shaft (4224).

6. The clamping mechanism according to claim 5, characterized in that: An elastic layer (4222) is provided between the first clamping claw (423) and the mounting plate (4223), and a surface of the hook claw (53) is inclined downward relative to the shoulder (531) to form a slope surface (532); After the first clamping jaw (423) is pressed onto the shoulder (531), the first clamping jaw (423) is driven by the driver (421) to press onto the elastic layer (4222) so that the elastic layer (4222) is deformed, thereby the first clamping jaw (423) is deflected radially downward along the pin shaft (4224), and the first clamping jaw (423) is tilted to fit the slope (532).

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