Workpiece fixing die for spot welding machine

Abstract

The utility model belongs to the technical field of spot welding equipment clamping tools, and discloses a workpiece fixing die for a spot welding machine, which comprises a fixing component for pressing and holding a workpiece, the fixing component is provided with at least two positioning parts distributed along the circumferential direction and at least two spot welding avoiding positions distributed along the circumferential direction, wherein the positioning part is used for being matched with a matching part on a workpiece in an embedded mode. According to the utility model, the workpiece can be pressed and held through the fixing component, so that the workpiece can be pressed and held on the supporting die, the condition that the workpiece slips when rotating along with the supporting die can be better avoided, and the fixing component can be matched with the existing structure, namely the matching part, on the workpiece through the positioning part; the workpieces can form a limiting relation in the rotating direction under the matching of the positioning part and the matching part, so that the two workpieces can be more stably and rotationally welded along with the supporting mold in the pressing process of the fixing component, and the welding is more accurate.

Description

Technical Field

[0001] The utility model belongs to the technical field of clamping tooling for spot welding equipment, and in particular relates to a workpiece fixing die for a spot welding machine. Background Art

[0002] The automatic spot welding machine is an automated processing equipment specially used for the welding process of parts. The automatic spot welding machine solves the problem of non-standard welding parts and small welding volume. It is an automated equipment with uniform welding formation, accurate positioning, accurate welding delay, and continuous operation. The equipment uses welding electrodes that can be raised and lowered to weld two annular workpieces placed on a rotating support mold. These two workpieces are Figure 1 As shown, the annular workpiece with a smaller diameter is the first workpiece 2, and the annular workpiece with a larger diameter is the second workpiece 1. The first workpiece 2 needs to be placed in the top groove of the second workpiece and fixed by circumferential four-point welding.

[0003] In the process of welding with the automatic spot welding machine, since the workpiece is placed in a supporting mold and needs to rotate with the supporting mold, this causes relative rotation between the two workpieces and between the workpiece and the supporting mold, that is, slipping occurs, affecting the welding quality and the accuracy of the welding effect. Utility Model Content

[0004] In view of this, the purpose of the utility model is to provide a workpiece fixing mold for a spot welding machine, so as to solve the problem that the workpiece is easy to slip on the supporting mold during the spot welding process.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A workpiece fixing die for a spot welding machine comprises a fixing member for pressing the workpiece, wherein the fixing member is provided with at least two positioning parts distributed along the circumference and at least two spot welding avoidance positions distributed along the circumference, wherein the positioning parts are used to be embedded and matched with matching parts on the workpiece.

[0007] In a possible implementation, the positioning portions and the spot welding avoidance positions are staggeredly distributed in the circumferential direction of the fixing component.

[0008] In a possible implementation, the positioning portions and the spot welding avoidance positions are distributed in a circumferential array in the circumferential direction of the fixing component.

[0009] In a possible implementation, the spot welding avoidance position includes a notch groove hollowed out on the fixing member, the fixing member between two adjacent notches is a fan-shaped structure, and the positioning portion is provided on the fan-shaped structure.

[0010] In a possible implementation, the positioning portion is a bezel, and the matching portion is a protrusion matching the bezel; or, the positioning portion is a protrusion, and the matching portion is a bezel.

[0011] In a possible implementation, the fixing member is provided with a central connecting hole, and the central connecting hole is used to connect with a positioning shaft on the supporting mold.

[0012] In a possible implementation, the fixing member has a connecting portion extending in the axial direction, and the connecting portion is embedded and matched with a groove provided in the supporting mold.

[0013] In a possible implementation, the fixing member is provided with an eccentrically arranged positioning observation portion.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] The utility model discloses a workpiece fixing die for a spot welding machine, which can hold the workpiece by means of a fixing member, so that the workpiece can be held on the supporting die, thereby effectively preventing the workpiece from slipping when the supporting die rotates. In addition, the fixing member can cooperate with an existing structure on the workpiece, i.e., a matching part, through a positioning part, and the workpiece can form a limiting relationship in the rotation direction under the cooperation of the positioning part and the matching part. In this way, the fixing member can make the two workpieces more stably rotated and welded with the supporting die during the holding process, and the welding is more accurate. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic diagram of the relative positions of a first workpiece and a second workpiece to be welded during welding;

[0017] Figure 2 A stereoscopic view of a fixing component of a workpiece fixing mold for a spot welding machine at a first viewing angle;

[0018] Figure 3 A stereoscopic view of a fixing component of a workpiece fixing mold for a spot welding machine at a second viewing angle;

[0019] Figure 4 It is a schematic diagram of the connection structure between a fixing component of a workpiece fixing mold for a spot welding machine and two workpieces;

[0020] Figure 5 The present invention is a cross-sectional view of a fixing member of a workpiece fixing die for a spot welding machine when it is installed on a supporting die.

[0021] In the figure: 1-second workpiece; 2-first workpiece; 21-small folded edge; 3-fixing component; 31-embedded groove; 32-notch groove; 33-fan-shaped structure; 34-center connecting hole; 35-positioning observation part; 36-connecting part; 4-supporting mold. DETAILED DESCRIPTION

[0022] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is further described in detail below in conjunction with specific implementation methods.

[0023] Please refer to Figure 1-5 As shown, an embodiment of the present application provides a workpiece fixing mold for a spot welding machine, including a fixing component 3 for pressing the workpiece, the fixing component 3 is provided with at least two positioning portions distributed along the circumference and at least two spot welding avoidance positions distributed along the circumference, wherein the positioning portions are used to be embedded and matched with the matching portions on the workpiece.

[0024] The fixing member 3 is used in conjunction with the supporting mold 4, and fixes the workpieces by pressing, so that the first workpiece 2 and the second workpiece 1 are not prone to slipping when rotating with the supporting mold 4. Since the upper surface of the workpiece is distributed with four small folded edges 21 that turn upward in a circumferential array, the structural characteristics of the small folded edges 21 are utilized, and a positioning portion is provided on the fixing member 3 for embedding and matching with the small folded edges 21 on the first workpiece 2 as a matching portion, so that the fixing member 3 and the first workpiece 2 can form a limiting relationship in the rotation direction, and when pressed, the two workpieces can be more fixed to each other and to the supporting mold 4.

[0025] The workpieces can be pressed by the fixing component 3 so that the two workpieces can be pressed on the supporting mold 4, which can better prevent the workpieces from slipping when rotating with the supporting mold 4. In addition, the fixing component 3 can cooperate with the existing structure, i.e., the matching part, on the first workpiece 2 through the positioning part. With the cooperation of the positioning part and the matching part, the first workpiece 2 can form a limiting relationship in the rotation direction. In this way, the fixing component 3 can make the two workpieces more stably rotated and welded with the supporting mold 4 during the pressing process, and the welding is more accurate.

[0026] In one embodiment, the positioning portions and the spot welding avoidance positions are staggeredly distributed in the circumferential direction of the fixing component 3 .

[0027] In this way, the staggered positioning parts and spot welding avoidance positions can facilitate switching to the spot welding avoidance positions for spot welding after rotating an angle, which is beneficial for welding under the condition of rotating the same angle each time, thereby improving welding efficiency.

[0028] Furthermore, in order to achieve multi-spot rotational welding at equal angles, the positioning portions and the spot welding avoidance positions are distributed in a circumferential array in the circumferential direction of the fixing component 3 .

[0029] In a preferred embodiment of the spot welding avoidance position, the spot welding avoidance position includes a notch groove 32 hollowed out on the fixing member 3 , a fan-shaped structure 33 is formed between the fixing member 3 between two adjacent notches 32 , and the positioning portion is provided on the fan-shaped structure 33 .

[0030] The notch groove 32 can provide better avoidance for welding, and of course it can also be a hollow structure with holes, without limitation. The fan-shaped structure 33 is just convenient for setting the positioning part, and the structural design is more reasonable.

[0031] In a specific implementation process, the positioning portion is a embedding groove 31, and the matching portion is a protrusion matching the embedding groove 31, and the protrusion is a small folding edge 21 structure of a workpiece with a smaller diameter.

[0032] In other embodiments, the positioning portion may be a protrusion and the matching portion may be a groove 31 . Of course, this needs to match the corresponding workpiece.

[0033] In the embodiment of the present application, the fixing member 3 is provided with a central connecting hole 34 , and the central connecting hole 34 is used to connect with the positioning shaft on the supporting mold 4 .

[0034] The central connection hole 34 of the fixing member 3 can facilitate the fixing member 3 to be sleeved on the positioning shaft (not shown in the figure), and the fixing member 3 can be pressed and held by threaded connection or by using fastening components such as nuts.

[0035] In order to position the fixing member 3 on the supporting mold 4 and install it quickly, the fixing member 3 further has a connecting portion 36 extending in the axial direction, and the central connecting hole 34 passes through the connecting portion 36; the connecting portion 36 can be connected to the groove provided on the supporting mold 4 to play a positioning role.

[0036] Specifically, the fixing member 3 is provided with an eccentrically arranged positioning observation portion 35. The positioning observation portion 35 can play the role of installation positioning and the role of facilitating observation. During the installation process, the corresponding position of the workpiece can be quickly installed and aligned through the positioning observation portion, and the rotation situation can also be intuitively understood during the rotation process. The positioning observation portion can be an eccentric hole, a screw threadedly connected to the fixing member 3, or a color representation, without limitation.

[0037] The above are only preferred embodiments of the present invention. It should be noted that the above preferred embodiments should not be regarded as limiting the present invention. The protection scope of the present invention should be based on the scope defined by the claims. For ordinary technicians in this technical field, several improvements and modifications can be made without departing from the spirit and scope of the present invention, and these improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A workpiece fixing die for a spot welding machine, characterized in that: The invention comprises a fixing component (3) for pressing a workpiece, wherein the fixing component (3) is provided with at least two positioning parts distributed along the circumference and at least two spot welding avoidance positions distributed along the circumference, wherein the positioning parts are used to be embedded and matched with matching parts on the workpiece.

2. A workpiece fixing mold for a spot welding machine as claimed in claim 1, characterized in that: The positioning portions and the spot welding avoidance positions are distributed in a staggered manner in the circumferential direction of the fixing component (3).

3. A workpiece fixing mold for a spot welding machine as claimed in claim 2, characterized in that: The positioning portions and the spot welding avoidance positions are distributed in a circumferential array in the circumferential direction of the fixing component (3).

4. A workpiece fixing mold for a spot welding machine as claimed in claim 2, characterized in that: The spot welding avoidance position comprises a notch groove (32) hollowed out on the fixing member (3), a fan-shaped structure (33) is formed between the fixing members (3) between two adjacent notch grooves (32), and the positioning portion is arranged on the fan-shaped structure (33).

5. A workpiece fixing mold for a spot welding machine as claimed in claim 1, characterized in that: The positioning portion is a embedding groove (31), and the matching portion is a protrusion matching the embedding groove (31); or, the positioning portion is a protrusion, and the matching portion is a embedding groove (31).

6. A workpiece fixing mold for a spot welding machine as claimed in claim 1, characterized in that: The fixing component (3) is provided with a central connecting hole (34), and the central connecting hole (34) is used to connect with a positioning shaft on the supporting mold (4).

7. A workpiece fixing die for a spot welding machine as claimed in claim 6, characterized in that: The fixing component (3) has a connecting portion (36) extending in the axial direction, and the central connecting hole (34) is embedded and matched with a groove provided in the supporting mold (4).

8. A workpiece fixing die for a spot welding machine as claimed in any one of claims 1 to 6, characterized in that: The fixing component (3) is provided with an eccentrically arranged positioning observation portion (35).

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