Resistance welding apparatus with ablatable spot welding tip

Abstract

The utility model discloses a resistance welding equipment of point welding head's polishing, including welding machine body, and the welding machine body is connected with the welding support, and the bottom of welding machine body is connected with the rotating base, and the bottom of rotating base is equipped with the support base, and one side of support base is equipped with the elevating system, and the elevating system is equipped with the polishing mechanism on, and the polishing mechanism includes the support plate, and the bottom of support plate is equipped with the drive motor, and the top of support plate is equipped with the polishing box body, and the drive gear, idler and polishing gear are rotatably equipped in the polishing box body, and the output of drive motor extends and is connected with drive gear upwards, and the middle of polishing gear is equipped with the polishing shaft, and the upper and lower two sides of polishing box body all are seted up with the polishing groove, and the polishing disc is equipped in the polishing groove, and the upper and lower two ends of polishing shaft are connected with the polishing disc of the upper and lower two sides of polishing box body respectively. The scheme can realize the quick automatic polishing to the welding head, need not to disassemble the welding head or manual replacement, reduce the downtime, and improve the continuity of the welding operation.

Description

Technical Field

[0001] This utility model belongs to the technical field of resistance welding equipment, specifically relating to a resistance welding device that can grind spot welding heads. Background Technology

[0002] Welding, also known as fusion welding, is a manufacturing process and technology that joins metals or other thermoplastic materials such as plastics by heating, high temperature, or high pressure. A spot welding head is a device used in welding equipment that comes into direct contact with the objects being welded, directly providing current and pressure to them.

[0003] The spot welding head consists of two parts, upper and lower. During welding, the object to be welded is placed between the two parts. Current flows through the object, generating heat, primarily through the contact surface between the object and the welding head. Spot welding uses a relatively large current. When welds are not strong, it is usually because there is a lot of dirt at the clamping points of the upper and lower parts of the spot welding head, which affects the current flow. The clamping points of the spot welding head need to be ground and cleaned.

[0004] The common method for cleaning spot welding heads is to remove them from the welding machine. However, the center of the spot welding head is made of insulating adhesive. Reinstalling the head after disassembly, cleaning, and grinding can affect the contact position between the upper and lower parts, resulting in poor welding performance. Therefore, the position of the spot welding head needs to be readjusted. Utility Model Content

[0005] To address the aforementioned problems, this utility model provides a resistance welding device capable of grinding spot welding heads, comprising a welding machine body, a welding bracket connected to the welding machine body, and a first welding head bracket and a second welding head bracket connected to the welding bracket. The first and second welding head brackets are C-shaped. A first spot welding head is connected to the first welding head bracket, and a second spot welding head is connected to the second welding head bracket. A rotating base is connected to the bottom of the welding machine body, and a support base is provided at the bottom of the rotating base. A lifting mechanism is provided on one side of the support base, and a grinding mechanism is provided on the lifting mechanism. The grinding mechanism includes an L-shaped support seat. A support plate is provided on the support base, a drive motor is provided at the bottom of the support plate, a grinding box is provided above the support plate, and a support beam plate is symmetrically provided on the inner side of the grinding box. A drive gear, an idler gear and a grinding gear are rotatably provided between the two support beam plates. The output end of the drive motor extends upward and is connected to the drive gear. A grinding shaft is provided in the middle of the grinding gear. Grinding grooves are provided on both the upper and lower surfaces of the grinding box. A grinding disc is provided in the grinding groove. The upper and lower ends of the grinding shaft are respectively connected to the grinding discs on the upper and lower surfaces of the grinding box.

[0006] Preferably, a strip-shaped fixing block is provided above the grinding box body, and a notch is provided on one side of the strip-shaped fixing block near the end of the grinding disc. A Hall sensor is provided on the notch, and a magnetic element is provided on the side of the grinding disc near the outer periphery.

[0007] Preferably, the strip-shaped fixing block has a connecting part on its side, the connecting part has a bolt hole, the bolt hole has a locking bolt, and the strip-shaped fixing block is screwed to the support plate by the locking bolt.

[0008] Preferably, the lifting mechanism includes a base plate, on which a lifting motor is provided, and the output end of the lifting motor is connected to the bottom of the L-shaped support.

[0009] Preferably, the side of the grinding box is provided with several heat dissipation holes, and a filter screen is installed in the heat dissipation holes.

[0010] The advantages of this utility model are:

[0011] 1. This solution integrates the spot welding equipment with the grinding mechanism, enabling automatic grinding of the first and second spot welding heads without disassembling them. This improves the overall automation level of the welding equipment, reduces downtime for maintenance, and increases production efficiency.

[0012] 2. The grinding mechanism in this solution is equipped with two grinding discs, one above the other, which work in conjunction with the linkage design of the two ends of the grinding shaft to grind the upper and lower end faces of the spot welding head, thereby improving the grinding efficiency and uniformity and extending the service life of the welding head.

[0013] 3. This solution uses a magnetic element on the edge of the grinding disc and a Hall sensor to detect the real-time rotation speed of the grinding disc, which helps to keep the grinding disc running under optimal conditions and improve grinding accuracy and consistency. Attached Figure Description

[0014] Figure 1 This is a structural diagram of the present utility model.

[0015] Figure 2 This utility model Figure 1 A structural diagram showing the grinding state of the two spot welding heads.

[0016] Figure 3 This is a schematic diagram of the external structure of the grinding box of this utility model.

[0017] Figure 4 This is a schematic diagram of the internal structure of the grinding box of this utility model.

[0018] In the diagram: 1 Welding machine body, 2 Welding bracket, 3 First welding head bracket, 4 Second welding head bracket, 5 First spot welding head, 6 Second spot welding head, 7 Rotating base, 8 Support base, 9 L-shaped support seat, 10 Support plate, 11 Drive motor, 12 Grinding box, 13 Support beam plate, 14 Drive gear, 15 Idler wheel, 16 Grinding gear, 17 Grinding shaft, 18 Grinding groove, 19 Grinding disc, 20 Strip fixing block, 21 Notch groove, 22 Hall sensor, 23 Magnetic element, 24 Connecting part, 25 Locking bolt, 26 Base plate, 27 Lifting motor, 28 Heat dissipation hole, 29 Filter screen. Detailed Implementation

[0019] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0020] In the description of this utility model, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0021] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Simultaneously, when an component is referred to as "fixed to" or "equipped on" another component, it can be directly on the other component or may have an intervening component present. When an component is referred to as "connected to" another component, it can be directly connected to the other component or may have an intervening component present. When an component is referred to as "fixedly connected to" another component, it can be a common fixed connection method such as welding, bolting, or gluing. In short, those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0022] Example 1, as Figure 1-2As shown, a resistance welding device for grinding spot welding heads includes a welding machine body 1, a welding bracket 2 connected to the welding machine body 1, a first welding head bracket 3 and a second welding head bracket 4 connected to the welding bracket 2, the first welding head bracket 3 and the second welding head bracket 4 having a C-shaped structure, a first spot welding head 5 connected to the first welding head bracket 3, a second spot welding head 6 connected to the second welding head bracket 4, and a pressurizing mechanism such as a pneumatic cylinder provided above the second welding bracket 2 to control the lifting and lowering of the first spot welding head 5, and the workpiece is placed between the first spot welding head 5 and the second spot welding head 6 for pressure welding.

[0023] A rotating base 7 is connected to the bottom of the welding machine body 1, and a support base 8 is provided at the bottom of the rotating base 7. The rotating base 7 can rotate the welding machine body 1 and the welding bracket 2. A lifting mechanism is provided on one side of the support base 8, and a grinding mechanism is provided on the lifting mechanism. The grinding mechanism is used to grind the first spot welding head 5 and the second spot welding head 6.

[0024] The grinding mechanism includes an L-shaped support base 9, a support plate 10 on the L-shaped support base 9, a drive motor 11 at the bottom of the support plate 10, and a grinding box 12 screwed onto the top of the support plate 10. Figure 4 The inner side of the grinding box 12 is symmetrically provided with supporting crossbeams 13. A drive gear 14, an idler gear 15, and a grinding gear 16 are rotatably mounted between the two supporting crossbeams 13. The drive gear 14, idler gear 15, and grinding gear 16 mesh with each other. The output end of the drive motor 11 extends upward and connects to the drive gear 14. The drive motor 11 enables the drive gear 14 to drive the idler gear 15 and grinding gear 16 to rotate. By employing the transmission structure composed of the drive gear 14, idler gear 15, and grinding gear 16, power transmission is smooth and noise is low, preventing the grinding disc 19 from jumping or slipping during high-frequency operation, thus improving the stability of the grinding effect.

[0025] A grinding shaft 17 is provided in the middle of the grinding gear 16. Grinding grooves 18 are provided on both the upper and lower surfaces of the grinding box 12. Grinding discs 19 are provided in both grinding grooves 18. The upper and lower ends of the grinding shaft 17 pass through the corresponding support beam plates 13 and are connected to the grinding discs 19 on the upper and lower surfaces of the grinding box 12. The rotation of the drive motor 11 can drive the grinding discs 19 on the upper and lower surfaces to rotate. When grinding is required, the rotating motor in the rotating base 7 drives the welding machine body 1 to rotate, thereby causing the first welding head 5 and the second welding head 6 to rotate to the upper and lower sides of one end of the grinding box 12, waiting for the two grinding discs 19 to rotate. The lifting mechanism includes a base plate 26, on which a lifting motor 27 is provided. The output end of the lifting motor 27 is connected to the bottom of the L-shaped support base 9. The lifting can drive the grinding mechanism to adjust its position up and down, which is convenient for grinding the first welding head 5 and the second welding head 6. If it can move the grinding box 12 up and down, it can grind the first welding head 5 and the second welding head 6 in turn.

[0026] This solution integrates the spot welding equipment with the grinding mechanism, enabling automatic grinding of the first spot welding head 5 and the second spot welding head 6 without disassembling the spot welding head. This improves the overall automation level of the welding equipment, reduces downtime for maintenance, and increases production efficiency.

[0027] Combination Figure 3 A strip-shaped fixing block 20 is provided above the grinding box 12. A notch 21 is provided on one side of the strip-shaped fixing block 20 near the end of the grinding disc 19. A Hall sensor 22 is installed on the notch 21. A magnetic element 23 is provided on the side of the grinding disc 19 near its outer periphery. When the magnet rotates with the grinding disc 19 and passes the Hall sensor 22, the Hall element inside the Hall sensor 22 detects the change in magnetic field and outputs an electrical pulse signal to the controller. The controller calculates the rotational speed based on the number of pulses per unit time. Real-time monitoring of the rotational speed helps maintain the grinding disc 19 operating under optimal conditions, improving grinding accuracy and consistency. If the grinding disc 19 slips, jams, or the motor malfunctions, the rotational speed will fluctuate abnormally. The system can detect the rotational speed deviation and promptly issue an alarm or shut down the machine for protection, preventing equipment damage or accidental injury to the operator.

[0028] The strip-shaped fixing block 20 has a connecting part 24 on its side, and bolt holes with locking bolts 25 in the bolt holes. The strip-shaped fixing block 20 is screwed to the support plate 10 through the locking bolts 25. By setting bolt holes and locking bolts 25, the strip-shaped fixing block 20 can be quickly connected or disassembled to the support plate 10, making it more convenient and faster to replace and repair the Hall sensor 22 or other components, thus improving maintenance efficiency. Several heat dissipation holes 28 are opened on the side of the grinding box 12, and filters 29 are installed in the heat dissipation holes 28. The heat dissipation holes 28 on the side of the grinding box 12 can realize air circulation and heat release, effectively reducing the temperature of the motor and grinding disc 19 area, avoiding overheating, and ensuring the long-term stable operation of the grinding system. The filters 29 in the heat dissipation holes 28 can effectively block dust, debris and other impurities from entering the box, preventing dust accumulation from contaminating or damaging the motor and gears.

[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A resistance welding device capable of grinding spot welding heads, characterized in that: The welding machine includes a welding machine body (1), which is connected to a welding bracket (2). The welding bracket (2) is connected to a first welding head bracket (3) and a second welding head bracket (4). The first welding head bracket (3) and the second welding head bracket (4) are C-shaped. A first spot welding head (5) is connected to the first welding head bracket (3), and a second spot welding head (6) is connected to the second welding head bracket (4). A rotating base (7) is connected to the bottom of the welding machine body (1). A support base (8) is provided at the bottom of the rotating base (7). A lifting mechanism is provided on one side of the support base (8). A grinding mechanism is provided on the lifting mechanism. The grinding mechanism includes an L-shaped support seat (9). A support plate (10) is provided on the L-shaped support seat (9). A drive motor (11) is provided at the bottom of the support plate (10). A grinding box (12) is provided above the support plate (10). A support beam plate (13) is symmetrically provided on the inner side of the grinding box (12). A drive gear (14), an idler wheel (15), and a grinding gear (16) are rotatably provided between the two support beam plates (13). The output end of the drive motor (11) extends upward and is connected to the drive gear (14). A grinding shaft (17) is provided in the middle of the grinding gear (16). Grinding grooves (18) are provided on both the upper and lower surfaces of the grinding box (12). A grinding disc (19) is provided in the grinding groove (18). The upper and lower ends of the grinding shaft (17) are respectively connected to the grinding discs (19) on the upper and lower surfaces of the grinding box (12).

2. The resistance welding equipment with a grindable spot welding head according to claim 1, characterized in that: The grinding box (12) has a strip-shaped fixing block (20) on its upper side. The strip-shaped fixing block (20) has a notch (21) on one side near the grinding disc (19). A Hall sensor (22) is provided on the notch (21). A magnetic element (23) is provided on the side of the grinding disc (19) near its outer periphery.

3. The resistance welding equipment with a grindable spot welding head according to claim 2, characterized in that: The strip-shaped fixing block (20) has a connecting part (24) on its side, and the connecting part (24) has a bolt hole. The bolt hole is equipped with a locking bolt (25). The strip-shaped fixing block (20) is screwed to the support plate (10) through the locking bolt (25).

4. The resistance welding equipment with a grindable spot welding head according to claim 3, characterized in that: The lifting mechanism includes a base plate (26), on which a lifting motor (27) is provided, and the output end of the lifting motor (27) is connected to the bottom of the L-shaped support base (9).

5. The resistance welding equipment with a grindable spot welding head according to claim 4, characterized in that: The side of the grinding box (12) is provided with several heat dissipation holes (28), and a filter screen (29) is installed in the heat dissipation holes (28).

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