Projection welding nut positioning pin

Abstract

The utility model discloses a projection welding nut positioning pin, and belongs to the technical field of projection welding lower electrode tips. According to the utility model, the pin seat is arranged in the lower electrode seat; the at least two pin heads can be separated from the pin seat; wherein the pin head comprises a body and a shaft rod integrally formed with the body, the pin seat is provided with a shaft hole through which the shaft rod can penetrate, a positioning surface is formed at the end, located at the shaft rod, of the body and used for abutting against the top end of the pin seat, and a positioning nut is in threaded connection with the tail end of the shaft rod and used for preventing the pin head from being separated from the pin seat; the insulating cover is sleeved outside the pin seat, so that the pin seat and the pin head are contacted with the lower electrode seat through the insulating cover, the pin seat and the pin head can be separated, the pin seat can be matched with different types of pin heads, the use requirements and scenes of different users are met, and the adaptability is good.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of projection welding lower electrode head, especially relates to a projection welding nut positioning pin. BACKGROUND

[0002] At present, most of the vehicle body welding lines use projection welding machines, mainly through replacing the different specifications of projection welding die heads on the lower electrode seat of the welding machine to meet the projection welding of various projection welding nuts, the projection welding nut positioning pin is installed in the projection welding die head, and the workpiece and the nut are positioned through the positioning pin, in order to adapt to different use scenes and requirements, as shown in the figure, the projection welding nut positioning pin has a sharp head and a round head, the sharp head positioning pin has the characteristics of high stability and small positioning error when it is usually used in cooperation with a feeder, the round head design of the round head positioning pin makes the operation more convenient, is suitable for manual operation and manual placement, and has strong applicability, and due to the good stability, the round head positioning pin is suitable for various welding scenes, especially in the case of frequent replacement or position adjustment; Figure 1

[0003] In the prior art, the round head and the sharp head projection welding nut positioning pin are usually of an integral structure, and when there are different use requirements or scenes, and when the positioning pin has local cracks and other defects, the positioning pin needs to be replaced as a whole, especially when the positioning pin positions the nut position directly bears the stamping force of the nut, so that the position often appears the phenomenon of fracture;

[0004] Therefore, in view of the above problems, the utility model provides a projection welding nut positioning pin with a split structure and capable of meeting different use requirements. CONTENT OF THE UTILITY MODEL

[0005] The utility model aims at overcoming the defects in the prior art, and provides a projection welding nut positioning pin, which is used to solve the problems of different use requirements and local defects of the positioning pin that cannot be repaired locally.

[0006] In order to achieve the above object, the utility model provides the following technical scheme:

[0007] The utility model discloses a projection welding nut positioning pin, which comprises:

[0008] The pin seat is arranged in the lower electrode seat.

[0009] The pin head comprises a body and a shaft rod which is integrally formed with the body.

[0010] The shaft hole can be penetrated by the shaft rod, and the body is located at the end of the shaft rod and forms a positioning surface, which is used to abut against the top end of the pin seat.

[0011] ​An insulating cover is sleeved outside the pin seat so that the pin seat and the pin head are in contact with the lower electrode seat through the insulating cover.

[0012] Further, the insulating cover comprises an insulating cap and an insulating sleeve sleeved outside the pin seat,

[0013] An outer wall at a bottom end of the insulating sleeve is formed with a connecting section, the inner cavity of the insulating cap is provided with a groove, and the shaft rod end of the pin head is accommodated in the groove.

[0014] Further, a positioning groove is formed in the insulating cap away from the end of the insulating sleeve, and the spring inside the lower electrode seat is positioned through the positioning groove.

[0015] Further, the outer diameter of the pin seat is equal to the outer diameter of the body of the pin head.

[0016] Further, the body top end is integrally formed with a taper section and a round head guiding section in sequence.

[0017] Further, the body top end is integrally formed with a pointed head guiding section with a structure protruding upward and tapering.

[0018] In the above technical solution, the projection welding nut positioning pin has the following beneficial effects:

[0019] In the above technical solution, the projection welding nut positioning pin has the following beneficial effects: BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments described in the present application, and other drawings can also be obtained by those skilled in the art according to these drawings.

[0021] Figure 1 The projection welding nut positioning pin in the prior art;

[0022] Figure 2 is a front view of the projection welding nut positioning pin disclosed by the present application;

[0023] Figure 3 is a front view of another embodiment of the projection welding nut positioning pin disclosed by the present application.

[0024] MARKED DESCRIPTION OF DRAWINGS:

[0025] 1, pin seat; 2, pin head; 201, shaft; 202, positioning surface; 203, round head guide section; 204, pointed head guide section; 3, positioning nut; 4, insulating sleeve; 5, insulating cap; 501, positioning groove; 502, groove; 6, lower electrode seat; 7, spring. DETAILED DESCRIPTION

[0026] In order to make the technical personnel in the art better understand the technical scheme of the utility model, the utility model will be further described in detail below with reference to the drawings.

[0027] Referring to Figure 1 As shown in the figure;

[0028] The utility model convex weld nut positioning pin, including: pin seat 1 and pin head 2;

[0029] Pin seat 1 is used to install in the mounting hole on lower electrode seat 6;

[0030] Pin head 2 can be separated from pin seat 1, and the body of pin head 2 is integrally formed with shaft 201, wherein pin seat 1 is provided with shaft hole, and shaft 201 can penetrate the shaft hole, the body of pin head 2 is provided with positioning surface 202 at the end of shaft 201, and the positioning surface 202 is in abutment with the top end surface of pin seat 1, and the end of shaft 201 is provided with positioning nut 3, which is used to block pin head 2 from separating from pin seat 1, the convex weld nut positioning pin comprises two pin heads 2, and the number of pin heads 2 can be more than two according to the use requirement, and when pin head 2 has local defects or different use requirements, it can be replaced in time.

[0031] Wherein, the convex weld nut positioning pin further comprises an insulating cover, which is sleeved outside the pin seat 1 to insulate the pin seat 1 and the pin head 2 from the lower electrode seat 6.

[0032] Preferably, the insulating cover comprises an insulating cap 5 and an insulating sleeve 4 sleeved outside the pin seat 1.

[0033] The bottom end of the insulating sleeve 4 is formed with a connecting section, which is threadedly connected with the insulating cap 5, so that the insulating cap 5 covers the shaft 201 end of the pin head 2 capped by the pin seat 1, the insulating cap 5 is provided with a groove 502 inside, which accommodates the shaft 201 end, and the insulating cap 5 is provided with a positioning groove 501 at the end away from the insulating sleeve 4, which positions the spring 7 inside the lower electrode seat 6, so that the spring 7 stably supports the convex weld nut positioning pin to reset.

[0034] Preferably, the outer diameter of the pin seat 1 is equal to the outer diameter of the body of the pin head 2.

[0035] Preferably, the body top end of the pin head 2 is integrally formed with a conical segment and a round head guiding segment 203 in sequence, the conical segment and the round head guiding segment 203 are the head of the round head projection nut positioning pin in the prior art, and the round head guiding segment 203 and the conical segment cooperate to position the nut.

[0036] In another preferred embodiment, the body top end of the pin head 2 is integrally formed with a pointed head guiding segment 204 which is upwardly protruding and is conical in configuration, the pointed head guiding segment 204 is the pointed head projection nut positioning pin in the prior art, and the pointed head guiding segment 204 positions the nut.

[0037] In the above technical solution, the projection nut positioning pin provided by the utility model has a split structure of the pin seat and the pin head, the pin seat can be adapted to different types of pin heads, different user use requirements and scenes can be met, and the positioning pin can be replaced in time when local defects occur, so that the adaptability is good.

[0038] The above only describes some exemplary embodiments of the utility model by way of illustration, without doubt, for ordinary skilled in the art, under the condition that the spirit and scope of the utility model are not deviated, the described embodiments can be modified in various different ways. Therefore, the above drawings and description are illustrative in nature and should not be understood as limiting the protection scope of the utility model claims.

Claims

1. A projection-welded nut locating pin, characterized in that, include: Pin seat (1) installed in the lower electrode seat (6); At least two pin heads (2) that can be separated from the pin seat (1); The pin head (2) includes a body and a shaft (201) integrally formed with the body. The pin seat (1) has a shaft hole through which the shaft (201) can pass. The body has a positioning surface (202) at the end of the shaft (201) for abutting against the top of the pin seat (1). A positioning nut (3) is threaded to the end of the shaft (201) to prevent the pin head (2) from disengaging from the pin seat (1). An insulating cover is fitted over the pin seat (1) so that the pin seat (1) and the pin head (2) can contact the lower electrode seat (6) through the insulating cover.

2. The projection weld nut positioning pin according to claim 1, characterized in that... ； The insulating cover includes an insulating cap (5) and an insulating sleeve (4) fitted over the pin seat (1). The bottom outer wall of the insulating sleeve (4) has a connecting section, which is threaded to the insulating sleeve (4). The bottom wall of the inner cavity of the insulating cap (5) has a groove (502), which accommodates the end of the shaft (201) of the pin head (2).

3. The projection weld nut positioning pin according to claim 2, characterized in that; The insulating cap (5) has a positioning groove (501) at the end away from the insulating sleeve (4), and the spring (7) inside the lower electrode seat (6) is positioned by the positioning groove (501).

4. The projection weld nut positioning pin according to claim 1, characterized in that... ； The outer diameter of the pin seat (1) is the same as the outer diameter of the body of the pin head (2).

5. The projection weld nut positioning pin according to claim 4, characterized in that... ； The top of the main body is integrally formed with a conical section and a round-headed guide section (203).

6. The projection weld nut positioning pin according to claim 4, characterized in that... ； The top of the main body is integrally formed with an upwardly protruding, cone-shaped pointed guide section (204).

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