Claw type clamping mechanism

Abstract

The utility model relates to the technical field of automatic assembly, and particularly discloses a claw type clamping mechanism which comprises a base, a driving piece, a transmission piece, a connecting rod and a clamping claw. One end of the transmission part is in transmission connection with the output end of the driving part; at least three connecting rods are arranged, all the connecting rods are arranged around the periphery of the transmission part, and one end of each connecting rod is hinged to the other end of the transmission part; the number of the clamping jaws is at least three, the clamping jaws are rotationally arranged on the base and hinged to the other ends of the corresponding connecting rods respectively, and all the clamping jaws are configured to be close to one another when the claw type clamping mechanism is in the clamping state and far away from one another when the claw type clamping mechanism is in the separating state. According to the arrangement, the cost is reduced, the mass of the claw type clamping mechanism is small, the using process is more convenient and faster, the working requirement of high-speed operation can be met, and the workpiece transferring efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of automated assembly, in particular to a claw-type clamping mechanism. Background Art

[0002] In the field of automated assembly, a clamping mechanism is often required to clamp parts, and a transfer mechanism is used to transfer parts between multiple stations so that they can be matched with other parts. Considering the structure of the parts, multiple clamps are required to complete the grasping of the parts. Generally, in order to facilitate control, multiple driving members are provided to control the multiple clamps separately.

[0003] The provision of multiple driving parts makes the clamping mechanism more expensive and heavier, and the use process is inconvenient, which affects the transfer efficiency of parts.

[0004] Therefore, it is urgent to study a clamping mechanism to solve the above problems. Utility Model Content

[0005] The utility model aims to provide a claw type clamping mechanism to solve the problems in the prior art that the clamping mechanism has high cost, large mass, inconvenient use and affects the transfer efficiency of parts.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] Claw type clamping mechanism, comprising:

[0008] Base;

[0009] A driving member, disposed on the base;

[0010] A transmission member, one end of which is drivingly connected to the output end of the driving member;

[0011] Connecting rods, at least three of which are provided, all of which are arranged around the outer circumference of the transmission member, and one end of each connecting rod is hinged to the other end of the transmission member;

[0012] The clamping jaws are provided with at least three, the clamping jaws are rotatably arranged on the base, and are respectively hinged with the corresponding connecting rods, and the clamping jaws are configured to approach each other when the claw-type clamping mechanism is in a clamping state, and to move away from each other when the claw-type clamping mechanism is in a separated state.

[0013] As an optional technical solution for a claw-type clamping mechanism, there are four clamping jaws, two of the four clamping jaws form a group, the two clamping jaws in one group are arranged opposite to each other along a first direction, and the two clamping jaws in another group are arranged opposite to each other along a second direction, there are four connecting rods, and they are respectively hinged to the corresponding clamping jaws, and the first direction is perpendicular to the second direction.

[0014] As an optional technical solution for a claw-type clamping mechanism, the clamping claw includes a claw body, a toggle part, and a hinged part arranged between the claw body and the toggle part, one end of the connecting rod is hinged to the toggle part, and the hinged part is rotatably arranged on the base.

[0015] As an optional technical solution of a claw-type clamping mechanism, the claw body includes a claw base and a claw finger portion arranged on the claw base, and the claw base and the claw finger portion are arranged at an angle.

[0016] As an optional technical solution of a claw-type clamping mechanism, the toggle part includes a first toggle rod and a second toggle rod connected to each other, one end of the first toggle rod is connected to the hinge part, one end of the second toggle rod is hinged to the connecting rod, the first toggle rod and the second toggle rod are set at an angle, and the opening direction is upward.

[0017] As an optional technical solution for a claw-type clamping mechanism, at least the claw body in the clamping claw is made of elastic material.

[0018] As an optional technical solution of a claw-type clamping mechanism, the base includes a fixed platform and a first mounting portion protruding from the fixed platform; the clamping claw is rotatably mounted on the first mounting portion.

[0019] As an optional technical solution of a claw-type clamping mechanism, the first mounting portion includes two mounting brackets arranged at intervals, and the clamping claw is clamped between the two mounting brackets.

[0020] As an optional technical solution of a claw-type clamping mechanism, the fixed platform is provided with a fixed groove and a telescopic channel passing through the fixed groove, the driving member is arranged in the fixed groove, and at least a part of the transmission member passes through the telescopic channel.

[0021] As an optional technical solution of a claw-type clamping mechanism, at least three second mounting parts are protruding from the outer periphery of the transmission member, one end of the connecting rod is hinged to the second mounting part, and the second mounting parts are evenly distributed around the axis of the transmission member.

[0022] The beneficial effects of the utility model are:

[0023] The utility model provides a claw-type clamping mechanism, which realizes simultaneous control of at least three clamping jaws by arranging a driving member, a transmission member and a plurality of connecting rods, and can realize the movement of at least three clamping jaws approaching or moving away from each other. The claw-type clamping mechanism of one driving member has low cost and small mass, is more convenient to use, and improves the transfer efficiency of workpieces. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of the claw-type clamping mechanism from a first viewing angle in an embodiment of the utility model;

[0025] Figure 2 It is a structural schematic diagram of the claw-type clamping mechanism from a second viewing angle in an embodiment of the utility model;

[0026] Figure 3 It is a structural schematic diagram of the claw-type clamping mechanism from a third viewing angle in an embodiment of the utility model;

[0027] Figure 4 for Figure 3 Cross-sectional view along AA direction.

[0028] In the figure:

[0029] X, first direction; Y, second direction;

[0030] 100, base; 110, fixing platform; 120, first mounting portion; 130, fixing groove; 140, avoidance groove;

[0031] 200, driving member; 210, driving shaft;

[0032] 300, transmission member; 310, second mounting portion; 320, fixing hole; 330, mounting groove;

[0033] 400, connecting rod;

[0034] 500, clamping claw; 510, claw body; 511, claw base; 512, claw finger; 513, clamping surface; 520, toggle part; 521, first toggle rod; 522, second toggle rod; 530, hinged part. DETAILED DESCRIPTION

[0035] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0036] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions, and the first feature "above", "above" and "above" the second feature include the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. The first feature "below", "below" and "below" the second feature include the first feature being directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0037] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0038] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0039] like Figures 1 to 4 As shown, the present embodiment provides a claw-type clamping mechanism, which includes a base 100, a driving member 200, a transmission member 300, a connecting rod 400 and a clamping jaw 500, wherein the driving member 200 is arranged on the base 100; one end of the transmission member 300 is transmission-connected to the output end of the driving member 200; at least three connecting rods 400 are provided, all of which are arranged around the outer circumference of the transmission member 300, and one end of the connecting rod 400 is hinged to the other end of the transmission member 300; at least three clamping jaws 500 are provided, the clamping jaws 500 are rotatably arranged on the base 100, and are respectively hinged to the other end of the corresponding connecting rod 400, and all of the clamping jaws 500 are configured to approach each other when the claw-type clamping mechanism is in a clamping state, and to move away from each other when the claw-type clamping mechanism is in a separated state.

[0040] The claw-type clamping mechanism realizes simultaneous control of at least three clamping jaws 500 and can realize the movement of at least three clamping jaws 500 approaching or moving away from each other by setting a driving member 200, a transmission member 300 and a plurality of connecting rods 400. The claw-type clamping mechanism with a driving member 200 has a low cost and a small mass, and is more convenient to use. It can meet the working requirements of high-speed operation and improve the transfer efficiency of workpieces.

[0041] In some embodiments, the driving member 200 may be a cylinder, and the arrangement of the cylinder can achieve reciprocating motion, with high working efficiency and low cost.

[0042] In some embodiments, there are four clamping jaws 500, two of the four clamping jaws 500 form a group, the two clamping jaws 500 in one group are arranged opposite to each other along the first direction X, and the two clamping jaws 500 in the other group are arranged opposite to each other along the second direction Y. There are four connecting rods 400, which are respectively hinged to the corresponding clamping jaws 500, and the first direction X is perpendicular to the second direction Y. The above-mentioned structure can clamp the workpiece in two directions, thereby improving the fixing effect of the workpiece and ensuring the safety of the transfer process.

[0043] In other embodiments, when the workpiece has five surfaces in the circumferential direction, five clamping jaws 500 may be provided, and the five connecting rods 400 and the five clamping jaws 500 are provided in one-to-one correspondence. During the operation of the output end of the driving member 200, the five clamping jaws 500 move away from or close to each other.

[0044] In some embodiments, the clamping jaw 500 includes a jaw body 510, a toggle portion 520, and a hinge portion 530 disposed between the jaw body 510 and the toggle portion 520. One end of the connecting rod 400 is hinged to the toggle portion 520, and the hinge portion 530 is rotatably disposed on the base 100. The line connecting the hinged position of the toggle portion 520 and the connecting rod 400 and the hinge portion 530 is defined as a first line, the line connecting the end of the jaw body 510 and the hinge portion 530 is defined as a second line, and the angle between the first line and the second line is an acute angle. This arrangement forms a storage space for accommodating a workpiece below the connecting rod 400 and between a plurality of jaws 500, so that a workpiece of a certain height can be clamped.

[0045] Further, the claw body 510 includes a claw base 511 and a claw finger 512 disposed on the claw base 511, and the claw base 511 and the claw finger 512 are arranged at an angle. The angle opening of the claw finger 512 of the claw base 511 faces the axis of the driving member 200. This arrangement forms a wider accommodation space between the claw base 511 and the claw finger 512, so that a workpiece with a larger width can be clamped, that is, a workpiece with a larger size in the horizontal direction can be clamped. Among them, the horizontal direction is the direction of the plane where the first direction X and the second direction Y are located.

[0046] In some embodiments, the toggle portion 520 includes a first toggle rod 521 and a second toggle rod 522 connected to each other, one end of the first toggle rod 521 is connected to the hinge portion 530, one end of the second toggle rod 522 is hinged to the connecting rod 400, and the first toggle rod 521 and the second toggle rod 522 are arranged at an angle, and the opening direction is upward. The above arrangement makes the space below the toggle portion 520 gradually increase in the direction close to the axis of the workpiece, so that a workpiece of greater height can be accommodated below the second toggle rod 522.

[0047] To maintain the stability of clamping, the claw body 510 is provided with a clamping surface 513. When the claw clamping mechanism is in the clamping state, all the clamping surfaces 513 abut against corresponding parts of the workpiece. In some embodiments, when the claw clamping mechanism is in the clamping state, the clamping surface 513 remains vertical or tilts outward from bottom to top.

[0048] When clamping a workpiece, in order to avoid marks, scratches, and other damage to the workpiece, in some embodiments, at least the jaw body 510 in the jaw 500 is made of an elastic material. In some embodiments, the jaw body 510 is made of plastic or other materials with a lower hardness than the workpiece. In other embodiments, the jaw 500 is made of plastic. The plastic jaw 500 will produce a certain elastic deformation when subjected to force, thereby preventing the workpiece from being subjected to excessive force.

[0049] In some embodiments, the base 100 includes a fixed platform 110 and a first mounting portion 120 protruding from the fixed platform 110; the hinge portion 530 of the clamping jaw 500 is rotatably mounted on the first mounting portion 120. This arrangement prevents the clamping jaw 500 from affecting the fixed platform 110 during the rotation process, thereby expanding the rotation range of the clamping jaw 500 and being able to adapt to workpieces of more sizes.

[0050] The first mounting portion 120 includes two mounting brackets arranged at intervals, and the clamping jaw 500 is clamped between the two mounting brackets. The above arrangement helps to improve the stability of the rotation of the clamping jaw 500. Among them, the clamping jaw 500 is provided with a rotation hole, the mounting bracket is provided with a bracket hole, and the pin passes through the bracket hole and the rotation hole. In some embodiments, in order to improve the smoothness of the rotation of the clamping jaw 500, a bearing is provided between the pin and the rotation hole.

[0051] To facilitate the installation of the driver 200, in some embodiments, the fixing platform 110 is provided with a fixing groove 130 and a telescopic channel passing through the fixing groove 130, the driver 200 is arranged at the bottom of the fixing groove 130, and at least a portion of the transmission member 300 is passed through the telescopic channel. This arrangement provides a position guide for the installation of the driver 200 and helps to reduce the overall height of the claw clamping mechanism.

[0052] Four second mounting parts 310 are convexly provided on the outer periphery of the transmission member 300, one end of the four connecting rods 400 is hinged to the corresponding second mounting parts 310, and the four connecting rods 400 are evenly arranged around the axis of the transmission member 300. The arrangement of the transmission member 300 facilitates the connection of the connecting rods 400. The transmission member 300 is provided with a fixing hole 320, and the output end of the driving member 200 is provided with a mounting hole, and the fixing screw passes through the fixing hole 320 and is screwed into the mounting hole.

[0053] The fixing hole 320 is a countersunk hole, and the setting of the countersunk hole can accommodate the nut of the fixing screw, thereby reducing the space occupied below the transmission member 300.

[0054] The transmission member 300 is provided with a mounting groove 330, the fixing hole 320 is connected to the mounting groove 330, and the outer diameter of the fixing hole 320 is smaller than the outer diameter of the mounting groove 330. The output end of the driving member 200 is provided with a driving shaft 210, the driving shaft 210 is passed through the mounting groove 330, and the mounting hole is provided at the end of the driving shaft 210. To prevent the driving shaft 210 and the transmission member 300 from rotating, in some embodiments, the side wall of the driving shaft 210 is provided with a first plane, and the side wall of the mounting groove 330 is provided with a second plane, and the first plane and the second plane are in contact with each other.

[0055] In some embodiments, two first planes and two second planes are provided, the first planes are symmetrically arranged about the axis of the drive shaft 210, and the second planes are symmetrically arranged about the axis of the installation slot 330. This arrangement improves the installation efficiency of the drive shaft 210 and the transmission member 300.

[0056] To improve the connection stability between the second mounting portion 310 and the connecting rod 400 , in some embodiments, the second mounting portion 310 includes two support frames disposed at intervals, and the connecting rod 400 is rotatably disposed between the two support frames.

[0057] In some embodiments, the fixing groove 130 is provided at the upper end of the fixing platform 110, and the lower end of the fixing platform 110 is provided with an escape groove 140, and when the claw-type clamping mechanism is in the clamping state, the transmission member 300 is located in the escape groove 140. This arrangement makes the space below the transmission member 300 as large as possible when the claw-type clamping mechanism is in the clamping state, so as to accommodate workpieces with a larger height as much as possible.

[0058] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. Claw type clamping mechanism, characterized in that: include: Base (100); A driving member (200) is disposed on the base (100); A transmission member (300), one end of the transmission member (300) being transmission-connected to the output end of the driving member (200); Connecting rods (400), at least three connecting rods (400) are provided, all the connecting rods (400) are arranged around the outer circumference of the transmission member (300), and one end of the connecting rod (400) is hinged to the other end of the transmission member (300); The clamping jaws (500) are provided with at least three, the clamping jaws (500) are rotatably arranged on the base (100), and are respectively hinged to the corresponding connecting rods (400), and the clamping jaws (500) are configured to approach each other when the claw-type clamping mechanism is in a clamping state, and to move away from each other when the claw-type clamping mechanism is in a separated state.

2. The claw-type clamping mechanism according to claim 1, characterized in that: There are four clamping jaws (500), two of the four clamping jaws (500) form a group, the two clamping jaws (500) in one group are arranged opposite to each other along a first direction (X), and the two clamping jaws (500) in another group are arranged opposite to each other along a second direction (Y), there are four connecting rods (400), and they are respectively hinged to the corresponding clamping jaws (500), and the first direction (X) is perpendicular to the second direction (Y).

3. The claw clamping mechanism according to claim 1, characterized in that: The clamping jaw (500) comprises a jaw body (510), a toggle portion (520), and a hinged portion (530) disposed between the jaw body (510) and the toggle portion (520); one end of the connecting rod (400) is hinged to the toggle portion (520), and the hinged portion (530) is rotatably disposed on the base (100).

4. The claw-type clamping mechanism according to claim 3, characterized in that: The claw body (510) comprises a claw base (511) and a claw finger (512) arranged on the claw base (511), and the claw base (511) and the claw finger (512) are arranged at an angle.

5. The claw clamping mechanism according to claim 3, characterized in that: The toggle portion (520) comprises a first toggle rod (521) and a second toggle rod (522) connected to each other, one end of the first toggle rod (521) is connected to the hinge portion (530), one end of the second toggle rod (522) is hinged to the connecting rod (400), and the first toggle rod (521) and the second toggle rod (522) are arranged at an angle, and the opening direction is upward.

6. The claw-type clamping mechanism according to claim 3, characterized in that: At least the claw body (510) in the clamping claw (500) is made of elastic material.

7. The claw-type clamping mechanism according to claim 1, characterized in that: The base (100) comprises a fixing platform (110) and a first mounting portion (120) protruding from the fixing platform (110); the clamping jaw (500) is rotatably mounted on the first mounting portion (120).

8. The claw-type clamping mechanism according to claim 7, characterized in that: The first mounting portion (120) comprises two mounting brackets arranged at an interval, and the clamping claw (500) is clamped between the two mounting brackets.

9. The claw-type clamping mechanism according to claim 7, characterized in that: The fixed platform (110) is provided with a fixed groove (130) and a telescopic channel passing through the fixed groove (130); the driving member (200) is arranged in the fixed groove (130); and at least a portion of the transmission member (300) passes through the telescopic channel.

10. The claw-type clamping mechanism according to any one of claims 1 to 9, characterized in that: At least three second mounting parts (310) are convexly provided on the outer periphery of the transmission member (300); one end of the connecting rod (400) is hinged to the second mounting part (310) and is evenly distributed around the axis of the transmission member (300).

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