High-stability stud resistance welding pliers

Abstract

The utility model discloses a high-stability stud resistance welding clamp, which comprises a resistance welding clamp, a driving moving electrode device and a static electrode, the driving moving electrode device and the static electrode are arranged on the resistance welding clamp, the driving front end of the driving moving electrode device is provided with a moving electrode cap, and the end part of the moving electrode cap is provided with a material clamping cavity for clamping a stud. A static electrode cap opposite to the movable electrode cap is arranged at one end of the static electrode, a magnetic component is arranged at the end, close to the movable electrode cap, of the static electrode cap, and the magnetic component is used for providing magnetic attraction force for a welding workpiece placed on the static electrode cap so that the welding workpiece can be kept stable. According to the utility model, the magnetic component is sleeved on the static electrode cap, and the welding workpiece is flattened and adsorbed on the static electrode cap by utilizing the unique characteristics of the magnetic component, so that the welding workpiece is kept stable.

Description

Technical Field

[0001] The utility model relates to the technical field of stud resistance welding pliers, and particularly relates to a stud resistance welding plier with high stability. Background Art

[0002] Stud welding is a method of welding one end of a stud in contact with the surface of a welding workpiece or pipe fitting, and completing the welding by applying a certain pressure to the stud through the two poles of a resistance welding plier. During the stud resistance welding process, short time, large current and small penetration depth will cause the welding workpiece to bear pressure, and at the same time, the fixed position of the welding work will be unbalanced, resulting in insufficient surface contact between one end of the stud and the surface of the welding workpiece or pipe fitting, resulting in the stud welding not being perpendicular to the workpiece, thereby reducing the welding strength of the joint. Content of the Utility Model

[0003] The purpose of the utility model is to solve the above technical problems and provide a stud resistance welding plier with high stability, which is a welding device provided to solve the problem that the welding strength of the joint is reduced due to the non-conformity of the energized contact surface between the welding workpiece and the stud under the pressure of the stud welding.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions to achieve:

[0005] A stud resistance welding plier with high stability includes a resistance welding plier, a driving moving electrode device and a static electrode arranged on the resistance welding plier. A moving electrode cap is arranged at the driving front end of the driving moving electrode device. A clamping cavity for clamping the stud is opened at the end of the moving electrode cap. One end of the static electrode is provided with a static electrode cap arranged opposite to the moving electrode cap. A magnetic component is arranged at one end of the static electrode cap close to the moving electrode cap. The magnetic component is used to provide magnetic suction for the welding workpiece placed on the static electrode cap so as to keep the welding workpiece stable.

[0006] Further, an installation convex part with a step is arranged at one end of the static electrode cap close to the moving electrode cap. The magnetic component is sleeved and fixed on the convex part, and the upper end surface height of the magnetic component is lower than the upper end surface height of the convex part so that the upper end surface of the magnetic component does not contact the welding workpiece.

[0007] Further, the shape of the upper surface of the magnetic component is adaptively matched with the shape of the lower surface of the welding workpiece.

[0008] The utility model provides a stud resistance welding pliers with high stability, which has the following beneficial effects: by arranging a magnetic component sleeved on the static electrode cap and using the unique characteristics of the magnetic component to flatten and adsorb the welding workpiece on the static electrode cap, the welding workpiece is kept stable and perpendicular to the static electrode cap. Also, since the moving electrode cap and the static electrode cap are coaxial and concentric before driving the moving electrode device, it is ensured that the stud welding in the clamping cavity is perpendicular to the welding workpiece during welding, so that the contact surface at one end of the stud is in complete contact with the energized surface of the welding workpiece, greatly improving the welding strength of the joint. Moreover, the device is easy to process in terms of cost and convenient to maintain. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for describing the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present utility model, and those of ordinary skill in the art can also obtain other drawings based on these drawings without creative efforts.

[0010] The following further describes in detail the specific implementation manners of the present utility model in conjunction with the drawings:

[0011] Figure 1 It is a schematic structural diagram of a stud resistance welding pliers with high stability provided by the present utility model;

[0012] Figure 2 It is a schematic structural diagram of the cooperation between a stud resistance welding pliers with high stability provided by the present utility model and a welding workpiece;

[0013] Figure 3 It is a schematic structural diagram of the moving electrode cap in a stud resistance welding pliers with high stability provided by the present utility model;

[0014] Figure 4 It is a schematic structural diagram of the static electrode cap in a stud resistance welding pliers with high stability provided by the present utility model;

[0015] Figure 5 It is a schematic structural diagram of the cooperation between the static electrode cap and the magnetic component in a stud resistance welding pliers with high stability provided by the present utility model;

[0016] Figure 6 It is a schematic partial sectional structural diagram of the cooperation between a stud resistance welding pliers with high stability provided by the present utility model and a plate-shaped welding workpiece;

[0017] Figure 7 It is a schematic partial sectional structural diagram of the cooperation between a stud resistance welding pliers with high stability provided by the present utility model and a square tubular welding workpiece.

[0018] Description of reference numerals in the figure: 1. Welding tongs; 2. Driving moving electrode device; 201. Moving electrode cap; 202. Material clamping cavity; 3. Static electrode cap; 301. Magnetic component; 302. Convex part; 4. Welding workpiece. Detailed implementation mode

[0019] It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0020] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work belong to the scope of protection of the present invention.

[0021] It should be noted that all directional indications (such as up-down-left-right-front-back...) in the embodiments of the present invention are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly. The connection described can be a direct connection or an indirect connection.

[0022] A stud resistance welding tongs with high stability, as Figures 1 to 7 shown, includes a resistance welding tongs 1 and a driving moving electrode device 2 and a static electrode arranged on the resistance welding tongs 1. A moving electrode cap 201 is arranged at the driving front end of the driving moving electrode device 2. A material clamping cavity 202 for clamping a stud is opened at the end of the moving electrode cap 201. One end of the static electrode is provided with a static electrode cap 3 arranged opposite to the moving electrode cap 201. A magnetic component 301 is arranged at one end of the static electrode cap 3 close to the moving electrode cap 201. The magnetic component 301 is used to provide a magnetic suction force for the welding workpiece 4 placed on the static electrode cap 3 so that the welding workpiece 4 is kept stable. A stepped mounting convex part 302 is arranged at one end of the static electrode cap 3 close to the moving electrode cap 201. The magnetic component 301 is sleeved and fixed on the convex part 302, and the upper end surface height of the magnetic component 301 is lower than the upper end surface height of the convex part 302 so that the upper end surface of the magnetic component 301 does not contact the welding workpiece 4, so as to prevent current from passing through the magnetic component 301 and damaging the magnetic component 301.

[0023] In this embodiment, as Figure 1 , Figure 2 , Figure 6 , Figure 7As shown in the figure, during the resistance welding process, the driving dynamic electrode device 2 of the resistance welding tongs 1 drives the dynamic electrode cap 201 towards the static electrode through a servo motor or a driving device. When the dynamic electrode cap 201 clamps the welding workpiece 4 with the static electrode cap 3, a large current is applied to generate a large amount of heat energy to melt the contact area between the welding workpiece 4 and the stud, forming a fusion core to complete the welding work. In this embodiment, a clamping cavity 202 is provided at one end of the dynamic electrode cap 201 in front of the driving dynamic electrode device 2. The clamping cavity 202 clamps the threaded part of the stud, and the other end faces the static electrode. One end of the static electrode cap 3 is provided with a mounting convex part 302 with a step. The magnetic component 301 is sleeved on the mounting convex part 302, and the height of the magnetic component 301 is lower than that of the mounting convex part 302. When the welding workpiece 4 is placed flat on the static electrode cap 3, due to the magnetic component 301 provided at the end of the static electrode cap 3, the welding workpiece 4 is firmly adsorbed on the static electrode cap 3 by the magnetic force of the magnetic component 301, so that the plane of the welding workpiece 4 is attached to the static electrode cap 3 and is perpendicular to the axis of the static electrode.

[0024] In the embodiment, as Figure 3 shown, the dynamic electrode cap 201 is provided with a clamping cavity 202. The stud with a threaded end is inserted into the clamping cavity 202, and the other end protrudes outside the clamping cavity 202 to contact the welding workpiece 4 during welding for welding. As Figure 6 , Figure 7 shown, the welding workpiece 4 is a magnetizable workpiece such as a steel plate or a square pipe.

[0025] The parts not involved in this technical solution can be implemented by using the prior art.

[0026] The above shows and describes the basic principles, main features and characteristics of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention includes the appended claims and their equivalents.

Claims

1. A high-stability stud resistance welding clamp, characterized in that: The invention comprises a resistance welding clamp (1) and a driving moving electrode device (2) and a static electrode arranged on the resistance welding clamp (1); the driving front end of the driving moving electrode device (2) is provided with a moving electrode cap (201); the end of the moving electrode cap (201) is provided with a clamping cavity (202) for clamping a stud; one end of the static electrode is provided with a static electrode cap (3) arranged opposite to the moving electrode cap (201); the end of the static electrode cap (3) close to the moving electrode cap (201) is provided with a magnetic component (301); the magnetic component (301) is used to provide magnetic attraction to a welding workpiece (4) placed on the static electrode cap (3) so as to keep the welding workpiece (4) stable.

2. A high-stability stud resistance welding tongs according to claim 1, characterized in that: The static electrode cap (3) is provided with a stepped mounting protrusion (302) at one end close to the moving electrode cap (201), the magnetic component (301) is sleeved and fixed on the protrusion (302), and the height of the upper end surface of the magnetic component (301) is lower than the height of the upper end surface of the protrusion (302) so that the upper end surface of the magnetic component (301) does not contact the welding workpiece (4).

3. A high-stability stud resistance welding tongs according to claim 2, characterized in that: The shape of the upper surface of the magnetic component (301) is adapted to match the shape of the lower surface of the welding workpiece (4).

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