Graphite copper spot welding joint tool with self-pressing function

Abstract

The utility model discloses a graphite copper spot welding joint frock with self -pressing function, including electrode cover, a group of first bolt, a group of spring, a group of compacting piece, graphite, connector, second bolt, the first bolt is located in electrode cover, and the first bolt bottom end is connected compacting piece, the spring is connected on the first bolt, and the graphite is connected in electrode cover through second bolt, and the electrode cover top end installs connector. The application realizes the function of adjusting pressure through the combined use of first bolt and spring, ensures that the pressure applied in the welding process is stable and uniform, helps to improve the welding quality. And the whole structure is compact, all movable parts are reasonably arranged, the possibility of accidental occurrence in the operation process is reduced, and the safety is improved.

Description

Technical Field

[0001] This utility model belongs to the field of spot welding head technology, and specifically relates to a graphite copper spot welding head tooling with self-pressurizing function. Background Technology

[0002] A spot weld joint refers to the connection between two or more metal workpieces formed through a spot welding process. Spot welding is a resistance welding method, mainly used to permanently fix thin sheet-like metal parts in specific locations.

[0003] In spot welding, especially when dealing with main workpieces like flexible busbars, ensuring proper clamping force is crucial for achieving high-quality welds. A typical spot weld joint, specifically referring to a graphite weld joint, requires the electrode to apply a certain pressure to the workpiece to ensure good contact, while simultaneously using electric current to generate heat and fuse the materials.

[0004] However, when spot welding softer materials or materials with specific physical properties, such as flexible sheet metal, insufficient clamping force provided by the electrodes can lead to a series of problems. First, insufficient clamping force may cause poor contact between the electrode and the workpiece, affecting the current conduction efficiency and resulting in uneven heating. Second, due to insufficient pressure on the contact surface, gas in the welding area cannot be effectively expelled, increasing the risk of bubble formation during welding. These bubbles not only affect the weld appearance, but more importantly, they weaken the mechanical strength and durability of the weld joint, thus affecting the safety and reliability of the entire welded structure.

[0005] Therefore, the above situation urgently needs to be addressed. Utility Model Content

[0006] Purpose of the utility model: In order to overcome the above shortcomings, the purpose of this utility model is to provide a graphite copper spot welding head tooling with self-clamping function. This design does not require the addition of any cylinder or other transmission mechanism, and the welding can be carried out directly by modifying the pressure head part. This not only simplifies the structure, but also improves the work efficiency and the convenience of quality control, ensuring efficient and simple operation.

[0007] Technical Solution: A graphite-copper spot welding head fixture with self-clamping function includes an electrode sleeve, a set of first bolts, a set of springs, a set of clamping blocks, graphite, a connector, and a second bolt. The first bolt passes through the electrode sleeve, and the bottom end of the first bolt is connected to the clamping block. The spring is sleeved on the first bolt. The graphite is connected to the electrode sleeve via the second bolt. The connector is installed at the top of the electrode sleeve. This application achieves pressure adjustment through the combined use of the first bolt and the spring, ensuring stable and uniform pressure applied during welding, which helps improve welding quality. Furthermore, the entire structure is compact, and all moving parts are rationally arranged, reducing the possibility of accidents during operation and improving safety.

[0008] Furthermore, a set of through holes are provided inside the electrode sleeve, including a first through hole, a second through hole, and a third through hole; the radii of the first and third through holes are larger than that of the second through hole. This application, through a reasonable arrangement of the through hole structure, can not only improve welding quality and efficiency but also enhance the reliability and durability of the equipment.

[0009] Furthermore, the radius of the first through hole is larger than the head of the first bolt, the radius of the head of the first bolt is larger than the second through hole, and the radius of the bolt shank is smaller than the second and third through holes. This design allows the head of the first bolt to move freely within the first through hole. When the spring is attached to the first bolt, the head will be locked at the transition between the first and second through holes, acting as a limit, which helps improve installation accuracy and ensures proper alignment between the electrode sleeve and other components.

[0010] Furthermore, the number of the first bolts and springs is the same, with at least four sets. In this application, each first bolt is paired with a spring, ensuring that the force applied to the connected or assembled components is evenly distributed. This helps prevent component deformation or damage due to uneven force. Moreover, the matching number of bolts and springs provides a more consistent tightening effect, increasing the stability and reliability of the structure.

[0011] Furthermore, the top end of the spring abuts against the lower end of the electrode sleeve, and the bottom end abuts against the upper end of the clamping block. The spring design of this application allows it to automatically adjust and compensate for gaps caused by wear or temperature changes. When heat generated during welding causes the components to expand or contract, the spring can maintain appropriate contact pressure. The presence of the spring also acts as a buffer, preventing damage to the welding equipment caused by sudden excessive pressure, which helps extend the equipment's service life and reduce maintenance costs.

[0012] Furthermore, at least two first bolts are connected to the clamping block, and at least two clamping blocks are provided. This application divides the original single clamping block into multiple blocks. Using multiple clamping blocks can ensure that the pressure applied during the welding process is more evenly distributed in the welding area.

[0013] Furthermore, the connector is in the shape of a hollow frustum and is connected to the welding machine rod head. The frustum shape of this application provides good structural strength and stability, effectively distributes force evenly, reduces stress concentration, and thus improves the durability and reliability of the equipment.

[0014] As can be seen from the above technical solution, this utility model has the following beneficial effects:

[0015] This application proposes a graphite copper spot welding head fixture with a self-clamping function. It employs double-sided high-temperature resistant springs with a clamping block underneath, and uses equal-height springs for connection, ensuring the smooth rod remains unaffected during spring compression. This design eliminates the need for additional cylinders or other transmission mechanisms; welding is performed directly on the clamping head. This simplifies the structure, improves work efficiency and quality control convenience, and ensures efficient and easy operation. Attached Figure Description

[0016] Figure 1 A schematic diagram of a graphite copper spot welding head tooling with self-clamping function;

[0017] Figure 2 This is a front perspective structural diagram of a graphite copper spot welding head tooling with self-clamping function.

[0018] Figure 3 This is a cross-sectional view of the electrode sleeve of a graphite copper spot welding head tooling with self-clamping function.

[0019] Explanation of reference numerals in the attached drawings: 1-Electrode sleeve; 11-Through hole; 1101-First through hole; 1102-Second through hole; 1103-Third through hole; 2-First bolt; 3-Spring; 4-Clamping block; 5-Graphite; 6-Connector; 7-Second bolt. Detailed Implementation

[0020] The present invention will be further explained below with reference to the accompanying drawings and specific embodiments. Example

[0021] This embodiment describes a graphite copper spot welding joint fixture with self-clamping function. Please refer to [reference needed]. Figure 1-2 As shown, a graphite-copper spot welding head fixture with self-tightening function includes an electrode sleeve 1, a set of first bolts 2, a set of springs 3, a set of clamping blocks 4, graphite 5, a connector 6, and a second bolt 7; the first bolts 2 pass through the electrode sleeve 1, and the bottom end of the first bolts 2 is connected to the clamping blocks 4; the springs 3 are sleeved on the bolts; the graphite 5 is connected to the electrode sleeve 1 through the second bolts 7; the connector 6 is installed at the top end of the electrode sleeve 1.

[0022] Furthermore, the number of the first bolts 2 and the springs 3 are the same; in one embodiment, four first bolts 2 and four springs 3 are provided, with the four first bolts respectively installed at the four corners of the electrode sleeve 1, and the springs 3 are fitted onto the part of the first bolts 2 that extends out of the electrode sleeve.

[0023] Furthermore, the top end of the spring 3 abuts against the lower end of the electrode sleeve 1, and the bottom end abuts against the upper end of the clamping block 4.

[0024] Furthermore, the number of clamping blocks 4 is at least two; in one embodiment, two clamping blocks are provided and installed on both sides of the bottom end of the electrode sleeve 1, with each clamping block connected to two first bolts.

[0025] Furthermore, the connector 6 is in the shape of a hollow frustum and is connected to the rod head of the spot welding machine.

[0026] Furthermore, the spring 3 is made of a high-temperature resistant metal. The high-temperature resistant metal material used in this application allows the spring to maintain its physical and mechanical properties in the high-temperature environment generated during welding, preventing it from softening or losing elasticity due to temperature increases, thus ensuring reliable operation of the spring under extreme conditions.

[0027] For further details, please refer to... Figure 3 As shown, a set of through holes 11 are provided inside the electrode sleeve 1. The through holes 11 include a first through hole 1101, a second through hole 1102, and a third through hole 1103. The radii of the first through hole 1101 and the third through hole 1103 are larger than those of the second through hole 1102.

[0028] Furthermore, the radius of the first through hole 1101 is larger than the head of the first bolt 2, the radius of the head of the first bolt 2 is larger than the second through hole 1102, and the radius of the screw of the first bolt 2 is smaller than the second through hole 1102 and the third through hole 1103.

[0029] In one embodiment, the second bolt 7 is an internal hex bolt.

[0030] Furthermore, the graphite copper spot welding head fixture with self-clamping function is installed on the spot welding machine head via connector 6 throughout the entire process, and the operation steps include:

[0031] Step S1: Adaptively select the model of the spot welding machine;

[0032] Step S2: Adjust the operating parameters according to the "Process Control Parameter Table", including the parameters that need to be adjusted, such as current and pressure.

[0033] Step S3: Select the materials and tooling required for the operation, including copper contacts, solder, tooling, and positioning cover plate;

[0034] Step S4: Begin the operation;

[0035] Step S401: Place the tooling into the rod head of the spot welding machine;

[0036] Step S402: Cover with the positioning cover plate;

[0037] Step S403: Add solder and copper contacts;

[0038] Step S404: The tooling is moved to the machine table close to the baffle, and the foot switch is used for welding;

[0039] Step S5: Place the welded products in a cooling water tank with a pH value between 6 and 8, and change the water once per shift.

[0040] Step S6: Transfer the cooled products to turnover baskets, with at least 150 pieces in each basket;

[0041] Step S7: Place the spot-welded product into the contact fixture. Products with contacts completely inside the fixture are considered qualified.

[0042] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements can be made without departing from the principle of the present utility model, and these improvements should also be considered within the protection scope of the present utility model.

Claims

1. A tooling for a graphite copper spot welding head with a self-clamping function, characterized in that, It includes an electrode sleeve (1), a set of first bolts (2), a set of springs (3), a set of clamping blocks (4), graphite (5), a connector (6), and a second bolt (7); the first bolt (2) passes through the electrode sleeve (1), and the bottom end of the first bolt (2) is connected to the clamping block (4); the spring (3) is sleeved on the first bolt (2); the graphite (5) is connected to the electrode sleeve (1) through the second bolt (7); the connector (6) is installed at the top end of the electrode sleeve (1).

2. The graphite copper spot welding head tooling with self-clamping function according to claim 1, characterized in that, The electrode sleeve (1) has a set of through holes (11) inside, the through holes (11) including a first through hole (1101), a second through hole (1102) and a third through hole (1103); the radii of the first through hole (1101) and the third through hole (1103) are larger than the second through hole (1102).

3. The graphite copper spot welding joint tooling with self-clamping function according to claim 2, characterized in that, The radius of the first through hole (1101) is greater than the head of the first bolt (2), the head radius of the first bolt (2) is greater than the second through hole (1102), and the screw radius of the first bolt (2) is smaller than the second through hole (1102) and the third through hole (1103).

4. The graphite copper spot welding joint tooling with self-clamping function according to claim 1, characterized in that, The number of the first bolts (2) is the same as that of the springs (3), and at least 4 sets are provided.

5. The graphite copper spot welding joint tooling with self-clamping function according to claim 1, characterized in that, The top end of the spring (3) abuts against the lower end of the electrode sleeve (1), and the bottom end abuts against the upper end of the clamping block (4).

6. The graphite copper spot welding joint tooling with self-clamping function according to claim 1, characterized in that, At least two first bolts (2) are connected to the clamping block (4), and at least two clamping blocks are provided.

7. The graphite copper spot welding joint tooling with self-clamping function according to claim 1, characterized in that, The connector (6) is in the shape of a hollow frustum and is connected to the rod head of the spot welding machine.

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