Secondary grinding device for electrode cap

Abstract

The utility model relates to the technical field of electrode cap machining equipment, in particular to an electrode cap secondary grinding device which comprises a support, a cutter box used for grinding an electrode cap and a motor used for driving a cutter head in the cutter box to rotate are installed on the upper portion of the support, and a sharpening blade is installed in the cutter head. The upper portion of the support is further provided with a grinding piece used for conducting secondary grinding on the ground electrode cap and a power driving device used for driving the grinding piece to rotate. The electrode cap grinding device has the advantages of being good in grinding effect and few in residual impurity of the ground electrode cap.

Description

Technical Field

[0001] This utility model relates to the technical field of electrode cap processing equipment, specifically an electrode cap secondary grinding device. Background Technology

[0002] Electrode caps are welding electrodes used in automotive and locomotive manufacturing and other fields. They are used in resistance welding equipment such as spot welding machines and are called electrode caps because they are fitted onto the electrode connecting rod. Aluminum welding electrode caps are welding consumables. They can be burned and deformed during the welding process, and impurities can adhere to and seep into the electrode cap. After a certain number of welding cycles, they need to be ground and replaced. The welding end of the aluminum welding electrode cap is spherically shaped and is usually ground using a grinding machine. The grinding machine's tool box contains grinding blades. The end of the aluminum welding electrode cap to be ground is placed in the tool box, and the grinding blades rotate to grind the surface of the electrode cap, removing impurities. After grinding, the surface of the aluminum welding electrode cap still retains some impurities, which affects the welding quality in subsequent uses. Utility Model Content

[0003] In order to solve the problem that residual impurities on the surface of aluminum welding electrode caps after grinding by a grinding machine affect the welding quality, this utility model provides a secondary grinding device for aluminum welding electrode caps that further grinds the aluminum welding electrode caps after grinding by a grinding machine to reduce impurities on the surface of the electrode caps.

[0004] To solve the above-mentioned technical problems, the present invention includes a bracket, on the upper part of which is mounted a tool box for grinding electrode caps and a motor for driving the tool disc inside the tool box to rotate. The tool disc is equipped with a grinding blade. Its structural feature is that the upper part of the bracket is also provided with a grinding disc for secondary grinding of the ground electrode caps and a power drive device for driving the grinding disc to rotate.

[0005] With the above structure, when the electrode cap needs to be ground to remove surface impurities, the electrode cap is first placed in the tool box, with the end of the electrode cap to be ground aligned with the cutting edge of the grinding blade. The motor is started, and the motor drives the tool disc to rotate. The grinding blade rotates with the tool disc, grinding the electrode cap as it rotates, removing the impurities deposited and penetrated on the surface of the electrode cap. After the grinding blade has finished grinding the electrode cap, the electrode cap is removed from the tool box. At the same time, the power drive device of the grinding wheel is started, driving the grinding disc to rotate. The end of the electrode cap to be ground is placed on the grinding disc, and the grinding disc performs a second grinding on the electrode cap, further removing the remaining impurities on the surface of the electrode cap. This reduces the impurities on the surface of the electrode cap, improves the surface quality of the electrode cap, and thus improves the welding quality of the subsequent electrode cap.

[0006] The upper part of the bracket is provided with a fixed mounting plate, the blade box is mounted on the mounting plate, and the motor is mounted on the blade box; the power drive device for driving the grinding disc to rotate is an angle grinder, the angle grinder is mounted on the mounting plate via a mounting bracket, the mounting bracket includes a adapter plate fixedly connected to the mounting plate, the mounting bracket also includes a support plate, the support plate is fixedly connected to the adapter plate by multiple bolts, the angle grinder is mounted on the support plate via a wall bracket, the power output end of the angle grinder is poweredly connected to the grinding disc, and a rubber buffer block is provided in the gap between the support plate and the adapter plate to buffer the vibration generated when the grinding disc performs secondary grinding on the electrode cap.

[0007] The rubber buffer block is sleeved on the outside of the bolt, and both ends of the rubber buffer block are in contact with the adapter plate and the support plate, respectively.

[0008] The support plate is provided with fastening screws that penetrate through the support plate and closely abut against the clamping part of the angle grinder to prevent the angle grinder from shifting.

[0009] Both sides of the knife box are provided with support columns that penetrate the knife box and are fixedly connected to the knife box. The support columns are fixedly connected to the mounting plate through connecting blocks. The outside of the support columns is provided with springs, which are located in the section between the knife box and the connecting blocks.

[0010] The motor drives the cutter head to rotate via a worm gear transmission.

[0011] The upper and lower surfaces of the knife box are provided with entry holes for inserting electrode caps.

[0012] The blade box is provided with at least one air inlet for purge gas to enter and an exhaust port for purge gas to exit.

[0013] The support is also equipped with an electrical control cabinet and a collection cylinder for collecting impurities in the discharged purge gas.

[0014] This invention relates to a secondary grinding device for electrode caps, comprising a tool holder and grinding discs. First, the grinding blades in the tool holder grind the electrode cap to be ground, removing impurities from its surface. Then, the grinding discs perform secondary grinding to further remove any remaining impurities, reducing surface contamination and improving the surface quality of the electrode cap and subsequent welding quality. The tool holder, motor, and mounting bracket for the angle grinder are all mounted on a mounting plate. The tool holder and motor are power-connected. The springs in the tool holder's mounting structure and the rubber buffer blocks on the angle grinder's mounting bracket provide vibration damping, reducing the vibration impact on the bracket and other equipment mounted on it during grinding, thus improving equipment stability. This invention reduces surface contaminants by using grinding discs for secondary grinding, improving the surface quality and welding quality of the electrode cap, resulting in a lower impurity level and higher surface quality after grinding. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a front view of the device;

[0017] Figure 3 This is a schematic diagram showing the grinding discs and angle grinder installed on the mounting bracket.

[0018] Figure 4 A side view of the grinding disc and angle grinder after they have been mounted on the mounting bracket;

[0019] Figure 5 This is a schematic diagram showing the knife box and motor after they are installed on the mounting plate.

[0020] Figure 6 This is a front view of the knife box and motor after they have been installed on the mounting plate.

[0021] Figure 7 This is a schematic diagram showing the connection between the motor and the cutter head;

[0022] Figure 8 This is a schematic diagram of the cutter head structure;

[0023] In the diagram: 1. Bracket; 11. Column; 12. Base plate; 2. Mounting plate; 21. Support column; 22. Connecting block; 23. Spring; 3. Angle grinder; 31. Grinding disc; 4. Tool box; 41. Inlet hole; 42. Air inlet; 43. Exhaust port; 44. Tool disc; 441. Outer disc; 442. Inner disc; 45. Upper mounting ring; 46. Lower mounting ring; 5. Motor; 51. Output shaft; 6. Mounting bracket; 61. Adapter plate; 62. Support plate; 63. Bolt; 64. Rubber buffer block; 65. Fastening screw; 66. Wall bracket; 7. Collection cylinder; 8. Electrical control cabinet. Detailed Implementation

[0024] Reference Figure 1-8 A secondary grinding device for electrode caps includes a support 1, a tool box 4 for primary grinding of the electrode cap, and a grinding disc 31 for secondary grinding, all mounted on the upper part of the support 1. The tool box 4 contains a tool disc 44 with grinding blades mounted on it. The tool disc 44 is driven to rotate by a motor 5. The grinding disc 31 is driven by a power drive device, specifically an angle grinder 3. The support 1 includes a base plate 12 and a column 11 vertically fixed to the base plate 12. A mounting plate 2 is fixedly connected to the upper part of the column 11, for example, by welding a steel plate to the upper part of the column 11. The mounting plate 2 is fixed to the steel plate by bolts and nuts. The tool box 4, motor 5, angle grinder 3, and grinding disc 31 are directly or indirectly mounted on the mounting plate 2.

[0025] Reference Figure 1-4 Angle grinder 3 is mounted on mounting plate 2 via mounting bracket 6. Grinding disc 31 is powered by the angle grinder 3. Specifically, grinding disc 31 is mounted on the power output end of the angle grinder 3, and the rotation of the power output end of the angle grinder 3 drives the grinding disc 31 to rotate. Mounting bracket 6 includes adapter plate 61 fixedly connected to mounting plate 2, combined with... Figure 1-4 The adapter plate 61 includes a vertical plate and a horizontal plate connected as one piece. The vertical plate is L-shaped and fixedly connected to the mounting plate 2. The side of the horizontal plate is fixedly connected to the top of the vertical plate. The adapter plate 61 is fixedly connected to the support plate 62 by four bolts 63. The angle grinder 3 is mounted on the support plate 62 by a wall bracket 66, which is preferably made of stainless steel. A gap is left between the adapter plate 61 and the support plate 62, and a rubber buffer block 64 for damping vibration is provided in the gap. Specifically, the rubber buffer block 64 is sleeved on the bolts. The outer surface of 63 and the two ends of the rubber buffer block 64 contact the adapter plate 61 and the support plate 62 respectively. The rubber buffer block 64 can reduce the impact of the vibration generated when the grinding disc 31 grinds the electrode cap on other equipment mounted on the bracket 1. Of course, the mounting bracket 6 can also adopt other structures. For example, the adapter plate 61 and the support plate 62 can be two parallel vertical plates. The adapter plate 61 is fixedly connected to the mounting plate 2, and the angle grinder 3 is mounted on the support plate 62 through the wall bracket 66. Both the angle grinder 3 and the grinding disc 31 are vertically arranged. Figure 3 , 4 As shown, the support plate 62 is provided with two fastening screws 65 that penetrate the support plate 62. After penetrating the support plate 62, the fastening screws 65 tightly abut against the clamping part of the angle grinder 3. The fastening screws 65 have a fastening effect on the angle grinder 3, preventing the angle grinder 3 from moving back and forth or rotating during operation.

[0026] Reference Figure 1 , 25, 6. The blade box 4 and the motor 5 are mounted on the mounting plate 2. Specifically, a plate for connecting the motor 5 can be provided on the outer shell of the blade box 4. The motor 5 is fixedly connected to the blade box 4 by screws or other fasteners. Figure 5 , 6 As shown, both sides of the tool box 4 are provided with support columns 21 that penetrate the tool box 4. The tool box 4 is fixedly connected to the support columns 21. Each support column 21 is fixedly connected to the mounting plate 2 by two connecting blocks 22. Specifically, a protrusion can be provided on the support column 21. The protrusion is inserted into the outer shell of the tool box 4 and the connecting block 22 to prevent the support column 21 from sliding relative to the tool box 4 and the connecting block 22. Then, the connecting block 22 is fixed to the mounting plate 2 with screws or other fasteners. A gap is left between the tool box 4 and the connecting block 22. A spring 23 is set in the gap between the tool box 4 and the connecting block 22 and is sleeved on the outside of the support column 21. The spring 23 plays a damping role and reduces the impact on other equipment installed on the bracket 1 when the grinding blade in the tool box 4 grinds the electrode cap.

[0027] Reference Figure 1 , 2 5-8, The upper and lower surfaces of the tool box 4 are both provided with entry holes 41 for inserting electrode caps, allowing for simultaneous grinding of two electrode caps. The tool box 4 is provided with an air inlet 42 for entering purge air and an exhaust port 43 for exiting purge air. At least one air inlet 42 is provided. Figure 5 , 6 As shown, the tool box 4 has two air inlets 42 on one side and one exhaust port 43 on the other side, with another air inlet 42 located near the exhaust port 43. Having multiple air inlets 42 at different locations on the tool box 4 helps to thoroughly blow out powder particles generated during electrode cap grinding. The exhaust port 43 facilitates the collection of these powder particles. The tool box 4 contains a tool disc 44, on which a shaving blade is mounted. The shaving blade is not shown in the figure. The tool disc 44 and the shaving blade are common components of electrode cap grinding devices. The shaving blade is typically made of cemented carbide and includes various structures such as single-edged, double-edged, and triple-edged blades. These structures are existing technology and will not be described in detail here. The rotation of the tool disc 44 is driven by a motor 5. Figure 7 , 8As shown, the motor 5 drives the cutter head 44 to rotate via a worm gear transmission. Specifically, the cutter head 44 includes an outer disk 441 and an inner disk 442 connected as one piece. The upper surfaces of the outer disk 441 and the inner disk 442 are toothed surfaces. A groove is left between the upper surfaces of the outer disk 441 and the inner disk 442. An upper mounting ring 45 is provided in the groove. The lower surface of the inner disk 442 protrudes downwards from the lower surface of the outer disk 441. A lower mounting ring 46 is provided on the outer side of the protrusion on the lower surface of the outer disk 441. The lower mounting ring 46 is fixed in position and plays a supporting and positioning role for the cutter head 44. When the cutter head 44 rotates, the upper mounting ring 45 plays a stabilizing role. The cutter head 44, the upper mounting ring 45, and the lower mounting ring 46 can rotate relative to each other. The output shaft 51 of the motor 5 is provided with serrations that mate with the toothed surfaces of the upper surface of the outer disk 441. When the output shaft 51 of the motor 5 rotates, it drives the cutter head 44 and the grinding blades inside the cutter head 44 to rotate accordingly. The upper surface of the inner disk 442 can also be set as a plane. In addition, an electrical control cabinet 8 and a collection cylinder 7 for collecting impurities in the purge gas discharged from the knife box 4 are also installed on the column 11 of the bracket 1. The collection cylinder 7 is connected to the exhaust port 43 of the knife box 4 through a pipe, which is not shown in the figure.

[0028] Instructions for use: When aluminum welding electrode caps need to be ground to remove surface impurities, start motor 5 and angle grinder 3. Motor 5 drives the cutter head 44 and the grinding cutter head to rotate, and angle grinder 3 drives the grinding disc 31 to rotate. Purging air is introduced into the tool box 4 through the air inlet 42 and discharged through the exhaust port 43. Use a robotic arm to place the two electrode caps into the tool box 4 through the entry holes 41 on the upper and lower surfaces, respectively. When the end of the electrode cap to be ground contacts the cutting edge of the grinding blade, the rotating grinding blade grinds the electrode cap, removing deformation and impurities from the surface of the electrode cap. After grinding, the resulting powder particles are discharged through exhaust port 43 with the purging air. The purging air exits from the tool box 4 and enters the collection cylinder 7 to collect the powder particles. After the electrode cap is ground by the shaving blade in the tool box 4, impurities still remain on its surface. The electrode cap is removed from the tool box 4 by a robotic arm, and then the end of the electrode cap to be ground is placed on the grinding surface of the grinding disc 31. The grinding disc 31 performs secondary grinding on the electrode cap to further remove the impurities remaining on the surface of the electrode cap, reducing the impurity residue on the surface of the electrode cap, improving the surface quality of the electrode cap, and improving the welding quality when using the electrode cap for subsequent welding. Both the tool box 4 and the angle grinder 3 are mounted on the mounting plate 2. The mounting structure of the tool box 4 is equipped with a spring 23, and the mounting bracket 6 of the angle grinder 3 is equipped with a rubber buffer block 64. Both the spring 23 and the rubber buffer block 64 play a vibration damping role, reducing the impact of vibration generated when the shaving blade or the angle grinder 3 grinds the electrode cap on other equipment on the support 1, and improving the stability of the device.

[0029] This invention utilizes a grinding blade in a tool holder to perform a primary grinding of the electrode cap, followed by a secondary grinding using a grinding disc. This two-stage grinding reduces residual impurities on the electrode cap surface, improving both surface quality and welding quality. The tool holder and grinding disc employ a vibration-damping installation method, mitigating the impact of vibration during electrode cap grinding and enhancing the stability of the device. This invention features low residual impurities and high surface quality in the ground electrode cap.

Claims

1. A secondary grinding device for electrode caps, comprising a support (1), wherein a tool box (4) for grinding electrode caps and a motor (5) for driving a cutting disc (44) inside the tool box (4) to rotate are mounted on the upper part of the support (1), and a grinding blade is installed inside the cutting disc (44), characterized in that: The upper part of the bracket (1) is also provided with a grinding disc (31) for secondary grinding of the ground electrode cap and a power drive device for driving the grinding disc (31) to rotate.

2. The electrode cap secondary grinding device according to claim 1, characterized in that: The bracket (1) has a fixed mounting plate (2) on its upper part. The knife box (4) is mounted on the mounting plate (2), and the motor (5) is mounted on the knife box (4). The power drive device for driving the grinding disc (31) to rotate is an angle grinder (3). The angle grinder (3) is mounted on the mounting plate (2) through a mounting bracket (6). The mounting bracket (6) includes a transition plate (61) fixedly connected to the mounting plate (2). The mounting bracket (6) also includes a support plate (62). The support plate (62) is fixedly connected to the transition plate (61) through multiple bolts (63). The angle grinder (3) is mounted on the support plate (62) through a wall bracket (66). The power output end of the angle grinder (3) is poweredly connected to the grinding disc (31). A rubber buffer block (64) is provided in the gap between the support plate (62) and the transition plate (61) to buffer the vibration generated when the grinding disc (31) performs secondary grinding on the electrode cap.

3. The electrode cap secondary grinding device according to claim 2, characterized in that: The rubber buffer block (64) is sleeved on the outside of the bolt (63), and the two ends of the rubber buffer block (64) are in contact with the adapter plate (61) and the support plate (62) respectively.

4. The electrode cap secondary polishing apparatus according to claim 2, characterized by: The support plate (62) is provided with fastening screws (65) that penetrate the support plate (62) and closely abut against the clamping part of the angle grinder (3) to prevent the angle grinder (3) from shifting.

5. The electrode cap secondary grinding device of claim 2, wherein: Both sides of the knife box (4) are provided with support columns (21) that penetrate the knife box (4) and are fixedly connected to the knife box (4). The support columns (21) are fixedly connected to the mounting plate (2) through the connecting block (22). The outside of the support column (21) is provided with a spring (23). The spring (23) is located in the section between the knife box (4) and the connecting block (22).

6. The electrode cap secondary grinding device of claim 1, wherein: The motor (5) drives the cutter head (44) to rotate via a worm gear transmission.

7. The electrode cap secondary grinding device of claim 1, wherein: The upper and lower surfaces of the knife box (4) are provided with entry holes (41) for inserting electrode caps.

8. The electrode cap secondary polishing apparatus according to claim 1, characterized by: The knife box (4) is provided with at least one air inlet (42) for the purge gas to enter and an exhaust port (43) for the purge gas to exit.

9. The electrode cap secondary grinding device of claim 8, wherein: The bracket (1) is also equipped with an electrical control cabinet (8) and a collection cylinder (7) for collecting impurities in the discharged purge gas.

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