Ultrasonic welding jig

Abstract

The utility model discloses an ultrasonic welding jig which comprises a fixing base, two symmetrically-distributed supporting frames are detachably installed on the surface of the fixing base, and first clamping electric telescopic rods and second clamping electric telescopic rods are installed on the inner sides of the two supporting frames. The second clamping electric telescopic rod is located above the first clamping electric telescopic rod, the axis of the first clamping electric telescopic rod coincides with the axis of the second clamping electric telescopic rod, buffering pads are fixedly installed at the output shaft ends of the first clamping electric telescopic rod and the second clamping electric telescopic rod correspondingly, and each buffering pad comprises a rubber outer sleeve; the rubber outer sleeve is fixed to the movable end of the first clamping electric telescopic rod and the movable end of the second clamping electric telescopic rod through an adhesive, and two elastic metal plates are installed in the rubber outer sleeve. According to the welding fixture, a welded component is quickly positioned and clamped, the clamping difficulty of the welded component is reduced, the operation time is shortened, and the welding efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of robotic arm curved surface component welding, and specifically relates to an ultrasonic welding jig. Background Technique

[0002] A robotic arm refers to a complex system with high precision, multiple inputs and outputs, high nonlinearity, and strong coupling. Due to its unique operation flexibility, it has been widely used in industrial assembly, safety explosion protection and other fields. A robotic arm is a complex system with uncertainties such as parameter perturbation, external interference, and unmodeled dynamics. Therefore, the modeling model of the robotic arm also has uncertainties. For different tasks, it is necessary to plan the motion trajectory of the robotic arm joint space, and then cascade to form the end pose.

[0003] A jig is a large category of tools for carpentry, ironworking, fitter work, machinery, electronic control, and other handicrafts. It is mainly a tool used to assist in controlling position or movement. The ultrasonic welding of curved surface components on a robotic arm requires the assistance of a jig.

[0004] However, since curved surface components are different from flat components, it is not easy to clamp curved surface components during ultrasonic welding, resulting in greater processing difficulty for curved surface components. Therefore, it does not meet the existing requirements, and for this reason, we propose an ultrasonic welding jig. Content of the Utility Model

[0005] The purpose of the utility model is to provide an ultrasonic welding jig to solve the problems mentioned in the above background technique that since curved surface components are different from flat components, it is not easy to clamp curved surface components during welding, resulting in greater processing difficulty for curved surface components.

[0006] To achieve the above purpose, the utility model provides the following technical solution: an ultrasonic welding jig, including a fixed seat, on the surface of the fixed seat, two symmetrically distributed support frames are detachably installed. Inside both of the two support frames, a first clamping electric telescopic rod and a second clamping electric telescopic rod are installed. The second clamping electric telescopic rod is located above the first clamping electric telescopic rod and the axes of the first clamping electric telescopic rod and the second clamping electric telescopic rod coincide. At the output shaft ends of the first clamping electric telescopic rod and the second clamping electric telescopic rod, buffer pads are fixedly installed. The buffer pad includes a rubber outer sleeve, and the rubber outer sleeve is fixed to the movable ends of the first clamping electric telescopic rod and the second clamping electric telescopic rod through an adhesive. Inside the rubber outer sleeve, two elastic metal plates are installed, and a buffer spring is fixed between the two elastic metal plates.

[0007] Preferably, clamping assemblies are provided on the outer sides of the movable ends of the first clamping electric telescopic rod and the second clamping electric telescopic rod. The clamping assembly includes four elastic connecting ropes, and one end of each elastic connecting rope is fixed to the outer surface of the movable end of the first clamping electric telescopic rod and the second clamping electric telescopic rod.

[0008] Preferably, an auxiliary positioning rod is fixed to the other end of the elastic connecting rope, and a rotating connecting rod is rotatably inserted through one end of the auxiliary positioning rod.

[0009] Preferably, fixing blocks are provided on the outer sides of both ends of the rotating connecting rod, and one end of each fixing block is fixed to the outer surface of the movable end of the first clamping electric telescopic rod and the second clamping electric telescopic rod.

[0010] Preferably, the other end of the auxiliary positioning rod is a semi-circular arc surface, and a rubber gasket is adhesively mounted on the outer side of the arc surface.

[0011] Preferably, the rubber gasket is arc-shaped and has a plurality of irregularly distributed circular protrusions on its outer surface.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0013] 1. When the present utility model clamps the welded member at the movable ends of the first clamping electric telescopic rod and the second clamping electric telescopic rod, four auxiliary positioning rods around the movable ends of the first clamping electric telescopic rod and the second clamping electric telescopic rod are used to slide along the surface of the welded member, and the welded member is clamped by the ends of the auxiliary positioning rods, so as to realize the rapid clamping and positioning of the welded member, and ensure that the welded member will not easily shift or rotate after being clamped, reduce the operation difficulty, ensure the smooth progress of welding, and improve the welding efficiency;

[0014] 2. The present utility model uses the rubber outer sleeve, elastic metal plate, and buffer spring to perform elastic buffering between the movable ends of the first clamping electric telescopic rod and the second clamping electric telescopic rod and the welded member, so as to prevent the welded member from being damaged due to excessive pressure generated when the first clamping electric telescopic rod and the second clamping electric telescopic rod come into contact and clamp. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic structural diagram of the whole of the present utility model;

[0016] Figure 2 is Figure 1 the enlarged structural view of part A in

[0017] Figure 3 is a schematic structural diagram of the clamping assembly of the present utility model;

[0018] Figure 4This is a structural cross-sectional view of the buffer pad of the present utility model.

[0019] In the figure: 1, fixed seat; 2, support frame; 3, first clamping electric telescopic rod; 4, second clamping electric telescopic rod; 5, clamping assembly; 51, auxiliary positioning rod; 52, rubber gasket; 53, elastic connection rope; 54, rotating connecting rod; 55, fixed block; 6, buffer pad; 61, rubber outer sleeve; 62, elastic metal plate; 63, buffer spring. Specific embodiments

[0020] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments.

[0021] As Figure 1 and Figure 4 shown, on the surface of the fixed seat 1, two symmetrically distributed support frames 2 are detachably installed. Inside both of the two support frames 2, a first clamping electric telescopic rod 3 and a second clamping electric telescopic rod 4 are installed. The second clamping electric telescopic rod 4 is located above the first clamping electric telescopic rod 3 and the axes of the first clamping electric telescopic rod 3 and the second clamping electric telescopic rod 4 coincide. At the output shaft ends of the first clamping electric telescopic rod 3 and the second clamping electric telescopic rod 4, buffer pads 6 are fixedly installed.

[0022] The buffer pad 6 includes a rubber outer sleeve 61. The rubber outer sleeve 61 is fixed to the movable ends of the first clamping electric telescopic rod 3 and the second clamping electric telescopic rod 4 by an adhesive. Inside the rubber outer sleeve 61, two elastic metal plates 62 are installed. A buffer spring 63 is fixed between the two elastic metal plates 62. The rubber outer sleeve 61, the elastic metal plate 62, and the buffer spring 63 are used for elastic buffering between the movable ends of the first clamping electric telescopic rod 3 and the second clamping electric telescopic rod 4 and the member to be welded, so as to prevent the member to be welded from being damaged due to excessive pressure generated when the first clamping electric telescopic rod 3 and the second clamping electric telescopic rod 4 come into contact and clamp.

[0023] As Figure 2 and Figure 3 shown, outside the movable ends of the first clamping electric telescopic rod 3 and the second clamping electric telescopic rod 4, clamping assemblies 5 are provided. The clamping assembly 5 includes four elastic connection ropes 53. One end of the elastic connection rope 53 is fixed to the outer surface of the movable ends of the first clamping electric telescopic rod 3 and the second clamping electric telescopic rod 4. The other end of the elastic connection rope 53 is fixed with an auxiliary positioning rod 51. One end of the auxiliary positioning rod 51 is rotatably inserted through a rotating connecting rod 54.

[0024] Fixed blocks 55 are provided on the outer sides of both ends of the rotating connecting rod 54. One end of the fixed block 55 is fixed to the outer surfaces of the movable ends of the first clamping electric telescopic rod 3 and the second clamping electric telescopic rod 4. The auxiliary positioning rod 51 is connected to the first clamping electric telescopic rod 3 and the second clamping electric telescopic rod 4 by using the rotating connecting rod 54, the fixed block 55 and the elastic connecting rope 53. When the movable ends of the first clamping electric telescopic rod 3 and the second clamping electric telescopic rod 4 extend and contact the welded member, the four auxiliary positioning rods 51 first contact the welded member and slide along the surface of the welded structure.

[0025] The other end of the auxiliary positioning rod 51 is a semi-circular arc surface. A rubber gasket 52 is adhesively installed on the outer side of the arc surface. The rubber gasket 52 is arc-shaped and has a plurality of irregularly distributed circular protrusions on its outer surface. The rubber gasket 52 is used to increase the contact friction between the end of the auxiliary positioning rod 51 and the welded member, ensuring that there is no relative sliding between the member and the end of the auxiliary positioning rod 51.

[0026] Working principle: First, connect the power supply of the device and start it. After the device starts, place the welded member between the movable ends of the first clamping electric telescopic rod 3 and the second clamping electric telescopic rod 4. Subsequently, the first clamping electric telescopic rod 3 and the second clamping electric telescopic rod 4 are energized and their movable ends extend and approach the welded member. When the ends of the first clamping electric telescopic rod 3 and the second clamping electric telescopic rod 4 are close to the welded member, the rubber gasket 52 at the end of the auxiliary positioning rod 51 first contacts the welded member. And as the movable ends of the first clamping electric telescopic rod 3 and the second clamping electric telescopic rod 4 continue to move, the auxiliary positioning rod 51 drives the rubber gasket 52 to slide along the surface of the welded member. At this time, the distances between the ends of the four auxiliary positioning rods 51 and the movable ends of the first clamping electric telescopic rod 3 and the second clamping electric telescopic rod 4 are the same. The paper buffer pad 6 is squeezed by the first clamping electric telescopic rod 3 and the second clamping electric telescopic rod 4 onto the welded member. The welded member is clamped and fixed from above and below by the movable ends of the first clamping electric telescopic rod 3 and the second clamping electric telescopic rod 4, the buffer pad 6 and the four auxiliary positioning rods 51, quickly realizing the positioning and clamping of the welded member, reducing the clamping difficulty of the welded member, shortening the operation time, and improving the welding efficiency.

[0027] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above-mentioned exemplary embodiments, and the present utility model can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present utility model. Any reference signs in the claims should not be construed as limiting the claims involved.

Claims

1. An ultrasonic welding fixture, comprising a fixed seat (1), characterized in that: Two symmetrically distributed support frames (2) are detachably installed on the surface of the fixed seat (1). A first clamping electric telescopic rod (3) and a second clamping electric telescopic rod (4) are installed on the inner sides of the two support frames (2). The second clamping electric telescopic rod (4) is located above the first clamping electric telescopic rod (3), and the axes of the first clamping electric telescopic rod (3) and the second clamping electric telescopic rod (4) coincide. Buffer pads (6) are fixedly installed at the output shaft ends of the first clamping electric telescopic rod (3) and the second clamping electric telescopic rod (4). The buffer pad (6) includes a rubber outer sleeve (61). The rubber outer sleeve (61) is fixed to the movable ends of the first clamping electric telescopic rod (3) and the second clamping electric telescopic rod (4) by an adhesive. Two elastic metal plates (62) are installed inside the rubber outer sleeve (61). A buffer spring (63) is fixed between the two elastic metal plates (62).

2. The ultrasonic welding jig according to claim 1, wherein: Clamping assemblies (5) are arranged on the outer sides of the movable ends of the first clamping electric telescopic rod (3) and the second clamping electric telescopic rod (4). The clamping assembly (5) includes four elastic connecting ropes (53). One end of the elastic connecting rope (53) is fixed to the outer surface of the movable ends of the first clamping electric telescopic rod (3) and the second clamping electric telescopic rod (4).

3. The ultrasonic welding jig according to claim 2, wherein: An auxiliary positioning rod (51) is fixed to the other end of the elastic connecting rope (53). A rotating connecting rod (54) is rotatably inserted through one end of the auxiliary positioning rod (51).

4. The ultrasonic welding jig according to claim 3, characterized in that: Fixed blocks (55) are arranged on the outer sides of both ends of the rotating connecting rod (54). One end of the fixed block (55) is fixed to the outer surface of the movable ends of the first clamping electric telescopic rod (3) and the second clamping electric telescopic rod (4).

5. The ultrasonic welding jig according to claim 4, characterized in that: The other end of the auxiliary positioning rod (51) is a semi-circular arc surface, and a rubber gasket (52) is adhesively installed on the outer side of the arc surface.

6. The ultrasonic welding jig according to claim 5, wherein: The rubber gasket (52) is arc-shaped and has a plurality of irregularly distributed circular protrusions on its outer surface.

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