Floating type pressing claw mechanism

Abstract

The utility model discloses a floating type pressing claw mechanism which comprises a driver, a pressing arm is arranged on the driver, and the pressing arm is driven by the driver to swing. A swing arm is connected to the pressing arm in a pivoted mode, pressing claws are connected to the two ends of the swing arm in a pivoted mode, and the two pressing claws are provided with pressing connection faces connected to a workpiece in a pressed mode. By adjusting the degree of freedom between the pressing arms and the swing arms and the degree of freedom between the swing arms and the pressing claws, the pressing claws can be subjected to multi-degree-of-freedom adjustment, so that the pressing claws can be pressed on the uneven workpiece surface, the problem that the surface of a battery shell is uneven and pressing is not firm in the prior art is solved, and the universality is high.

Description

Technical Field

[0001] The utility model belongs to the field of friction stir welding tooling and relates to a floating type pressing claw mechanism used in a battery shell welding tooling. Background Art

[0002] Friction stir welding refers to the use of the heat generated by the friction between the high-speed rotating welding tool and the workpiece to partially melt the material to be welded. When the welding tool moves forward along the welding interface, the plasticized material flows from the front to the back of the welding tool under the action of the rotating friction force of the welding tool, and forms a dense solid phase weld under the extrusion of the welding tool.

[0003] In the practice of using friction stir welding to weld battery shells, the surface of the battery shell cannot be guaranteed to be flat due to processing or assembly reasons, so that the pressing block of the clamping cylinder can only partially contact the battery shell, affecting the progress of friction stir welding, and in severe cases causing the product to crack and be scrapped.

[0004] Therefore, it is necessary to improve the prior art to overcome the defects in the prior art. Utility Model Content

[0005] The utility model aims to provide a floating type pressing claw mechanism to solve the problem that the pressing block of the pressing cylinder cannot completely press the battery shell.

[0006] The purpose of the utility model is achieved through the following technical solutions:

[0007] A floating pressure claw mechanism comprises a driver, wherein a pressure arm is arranged on the driver and the pressure arm swings under the drive of the driver; a swing arm is pivotally connected to the pressure arm, and pressure claws are pivotally connected to both ends of the swing arm, and the two pressure claws have a crimping surface that is crimped onto a workpiece.

[0008] Furthermore, a positioning hole is centrally provided on the swing arm, one end of the pressure arm is fixed on the driver, and the other end of the pressure arm is a short axis A protruding outward, and the short axis A is inserted into the positioning hole to pivotally connect the swing arm to the pressure arm.

[0009] Furthermore, the driver is a strong clamping cylinder.

[0010] Furthermore, a pivot hole is provided on one side of the pressure claw, and both ends of the swing arm are short axes B adapted to the pivot hole.

[0011] The adoption of the above technical scheme has the following beneficial effects: by adjusting the degrees of freedom between the pressing arm and the swing arm, and the degrees of freedom between the swing arm and the pressing claw, the pressing claw can be adjusted with multiple degrees of freedom, so that the pressing claw can be pressed tightly on the uneven surface of the workpiece, overcoming the problem of the uneven surface of the battery shell and the loose pressing in the prior art, and has strong versatility. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the implementation or the prior art description. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0013] The structures, proportions, sizes, etc. illustrated in this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with the technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantial technical significance. Any structural modification, change in proportion or adjustment of size shall still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.

[0014] Figure 1 This is a schematic diagram of the first state structure provided by the utility model.

[0015] Figure 2 This is a schematic diagram of the second state structure provided by the utility model.

[0016] In the figure: 1-driver; 2-pressing arm; 3-swinging arm; 4, 5-pressing claws; 6-workpiece. DETAILED DESCRIPTION

[0017] The specific implementation methods of the present invention are further described below in conjunction with the accompanying drawings. It should be noted that the description of these implementation methods is used to help understand the present invention, but does not constitute a limitation of the present invention. In addition, the technical features involved in each implementation method of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0018] Example

[0019] See also Figure 1-Figure 2 As shown, a floating pressure jaw mechanism includes a driver 1, on which a pressure arm 2 is arranged, and the pressure arm 2 swings under the drive of the driver 1. A swing arm 3 is pivotally connected to the pressure arm 2, and pressure jaws 4 and 5 are pivotally connected at both ends of the swing arm 3. The two pressure jaws 4 and 5 have a pressing surface that is pressed on a workpiece 6.

[0020] Specifically, the driver 1 in this embodiment is a strong clamping cylinder, which can be purchased on the market and belongs to the scope of the prior art.

[0021] A positioning hole is centrally provided on the swing arm 3, one end of the pressure arm 2 is fixed to the driver 1 by means of bolts, the other end of the pressure arm 2 is a short shaft A protruding outwards, and the short shaft A is inserted into the positioning hole so that the swing arm is pivotally connected to the pressure arm.

[0022] A pivot hole is provided on one side of the pressing claws 4 and 5, and both ends of the swing arm are short shafts B adapted to the pivot holes. The short shafts A and B are both smooth rotating shaft shapes so that the swing arm 3 and the pressing claws 4 and 5 can rotate freely.

[0023] Through the above structural design, the degrees of freedom between the pressure arm and the swing arm, and the degrees of freedom between the swing arm and the pressure claw are adjusted, the pressure claw can be adjusted with multiple degrees of freedom, and the pressure claw can be attached to various different planes, which is suitable for different scene requirements.

[0024] After the battery shell (workpiece 6) to be welded is positioned on the tooling, the driver 1 is activated to drive the cantilever 2 to rotate counterclockwise, and the pressure claw presses the workpiece. When the surface of the workpiece is uneven, since the pressure claw can rotate around two degrees of freedom at the same time, the two pressure claws can firmly press the workpiece on both sides of the weld of the workpiece, reducing the number of cylinders, reducing the difficulty of tooling assembly, saving costs, and ensuring the stable progress of stir friction welding.

[0025] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions and variations of these embodiments are made without departing from the principles and spirit of the present invention, and still fall within the scope of protection of the present invention.

Claims

1. A floating pressure claw mechanism, characterized in that: It comprises a driver, on which a pressing arm is arranged, and the pressing arm swings under the drive of the driver; a swing arm is pivotally connected to the pressing arm, and both ends of the swing arm are pivotally connected to pressing claws, and the two pressing claws have a pressing surface that is pressed on the workpiece.

2. The floating pressure claw mechanism according to claim 1, characterized in that: A positioning hole is centrally provided on the swing arm, one end of the pressure arm is fixed on the driver, and the other end of the pressure arm is a short axis A protruding outwards, and the short axis A is inserted into the positioning hole to pivotally connect the swing arm to the pressure arm.

3. The floating pressure claw mechanism according to claim 1, characterized in that: The driver is a strong clamping cylinder.

4. The floating pressure claw mechanism according to any one of claims 1 to 3, characterized in that: A pivot hole is provided on one side of the pressure claw, and both ends of the swing arm are short shafts B adapted to the pivot hole.

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