An electric lever type welding gun electrode cap removal device

Abstract

The present invention provides an electric lever-type welding gun electrode cap disassembly device, comprising a frame, a cap disassembly mechanism, a lever mechanism, a knocking mechanism, a shift mechanism and a motor; the cap disassembly mechanism comprises a fixed fork claw, a moving seat slidably connected to the frame along a first direction, and a moving fork claw slidably connected to the moving seat along a first direction, and a clamping plate is provided on both the fixed fork claw and the moving fork claw; the lever mechanism comprises a lever arm hinged to the frame, a transmission block hinged to the lever arm, a transmission arm hinged to the lever arm, a transmission seat hinged to the transmission arm, and a screw threadedly connected to the transmission seat; the transmission block is slidably connected to the moving seat along a second direction, and the first and second directions are non-parallel; the knocking mechanism comprises a knocking hammer slidably connected to the moving seat along a first direction and capable of striking the moving fork claw; the screw and the knocking hammer are both connected to the motor through a shift mechanism. The present invention can effectively solve the problems caused by the hard pulling method of disassembling the electrode cap.

Description

Technical Field

[0001] The invention relates to the technical field of welding gun electrode cap disassembly, in particular to an electric lever type welding gun electrode cap disassembly device. Background Art

[0002] In the manufacturing industry, spot welding is a common method for connecting parts. As a key consumable part of spot welding, the electrode cap often has welding slag adhesion, oxide layer formation, and excessive wear after long-term use, which increases the resistance of the electrode cap and affects the welding quality. Therefore, the electrode cap with severe wear must be replaced in time.

[0003] At present, the electrode cap is usually installed on the electrode rod by interference fit. However, most traditional welding gun electrode cap removal devices use hard pulling. Although this method is fast to remove, if the electrode cap and the electrode rod are stuck, hard pulling will aggravate the wear of the electrode rod. When the electrode rod is worn to a certain extent, the electrode cap cannot be firmly fastened to the electrode rod, resulting in failure of the electrode rod. In severe cases, hard pulling may also leave scratches on the surface of the electrode rod, and produce radial gaps at the connection between the electrode rod and the electrode cap, causing the cooling water in the electrode rod to leak from the gap, ultimately affecting the normal operation of the welding equipment. Summary of the invention

[0004] In order to overcome the deficiencies of the prior art, the present invention provides an electric lever-type welding gun electrode cap disassembly device, which can effectively solve the problems caused by disassembling the electrode cap by hard pulling.

[0005] The present invention adopts the following technical solutions.

[0006] An electric lever-type welding gun electrode cap disassembly device comprises a frame, a cap disassembly mechanism, a lever mechanism, a knocking mechanism, a shifting mechanism and a motor;

[0007] The cap removal mechanism comprises a fixed fork claw integrally connected to the frame, a movable seat slidably connected to the frame along a first direction, and a movable fork claw slidably connected to the movable seat along the first direction, and a clamping plate is provided on both the fixed fork claw and the movable fork claw;

[0008] The lever mechanism comprises a lever arm hinged to the frame, a transmission block hinged to the first end of the lever arm, a transmission arm whose first end is hinged to the second end of the lever arm, a transmission seat hinged to the second end of the transmission arm, and a screw rod threadedly connected to the transmission seat;

[0009] The transmission block is slidably connected to the moving seat along a second direction, and the first direction is non-parallel to the second direction;

[0010] The striking mechanism comprises a striking hammer which is slidably connected to the movable seat along a first direction and is capable of striking the movable fork claw;

[0011] The screw rod and the percussion hammer are both connected to the motor through a shifting mechanism;

[0012] When the resistance torsion of the screw is less than a threshold value, the shift mechanism switches on the power transmission between the motor and the screw, and cuts off the power transmission between the motor and the hammer, and the motor drives the screw to rotate through the shift mechanism;

[0013] When the resistance torque of the screw is equal to or greater than the threshold, the shift mechanism cuts off the power transmission between the motor and the screw, and connects the power transmission between the motor and the hammer, and the motor drives the hammer to reciprocate in the first direction through the shift mechanism.

[0014] Furthermore, a pushing block is slidably connected to the movable fork claw along the second direction, and the pushing block is connected to a first elastic member, and the first elastic member causes the pushing block to tend to move away from the movable fork claw.

[0015] Furthermore, the movable fork claw is provided with a friction heating seat, the percussion hammer is provided with a friction heating block that slides against the friction heating seat, the first elastic member is made of a material with a high thermal conductivity coefficient, and the first elastic member is thermally connected to the push block and the friction heating seat.

[0016] Furthermore, a heat-conducting silicone pad is provided at one end of the pushing block facing away from the friction heating seat, and the first elastic member passes through the pushing block and is in close contact with the heat-conducting silicone pad.

[0017] Furthermore, a heat expansion component is connected between the friction heat generating block and the striking hammer, and the pressure of the friction heat generating block on the friction heat generating seat is directly proportional to the temperature of the heat expansion component.

[0018] Furthermore, the shift mechanism comprises an active sleeve rotatably sleeved on the outside of the screw rod, and a driven sleeve rotatably sleeved on the outside of the active sleeve, the active sleeve is integrally connected to the output shaft of the motor, and the percussion hammer is transmission-connected to the driven sleeve;

[0019] The active sleeve is provided with a locking structure, and the locking structure can connect the active sleeve and the screw rod into a whole, or connect the active sleeve and the driven sleeve into a whole.

[0020] Furthermore, the locking structure includes a mounting hole passing through the side wall of the active sleeve, and a locking pin slidably connected to the mounting hole, the locking pin is provided with a beveled wedge at one end close to the screw rod, the side wall of the screw rod is provided with a wedge groove matching the beveled wedge, the side wall of the driven sleeve is provided with a locking groove matching the locking pin, a fixed magnet is embedded in the active sleeve, and a moving magnet is embedded in the locking pin, and the fixed magnet causes the moving magnet to tend to approach the screw rod.

[0021] Furthermore, the percussion hammer is integrally connected with a transmission rod extending in the first direction, and a second elastic member is connected between the transmission rod and the movable seat, and the second elastic member makes the transmission rod tend to approach the movable seat;

[0022] A draw hook is provided at the bottom end of the transmission rod, a ratchet is provided on the driven sleeve, and a swing arm is connected between the draw hook and the ratchet.

[0023] Furthermore, the movable seat is integrally connected to the receiving seat via a receiving beam, the driven sleeve is rotatably connected to the receiving seat, and the swing arm is hinged to the receiving beam.

[0024] The beneficial effects of the present invention are:

[0025] During operation, the movable fork claw is adjacent to the fixed fork claw, and the clamping plates of both are inserted into the axial gap between the electrode cap to be removed and the electrode rod. Then start the motor. When the electrode cap to be removed is not stuck between the electrode rod and the electrode rod, the resistance torque of the screw rod will be less than the threshold value. In this case, the shift mechanism connects the power transmission between the motor and the screw rod, and cuts off the power transmission between the motor and the hammer. The motor drives the screw rod to rotate through the shift mechanism, so that the transmission seat threaded with the screw rod moves toward the first end of the screw rod. The transmission seat drives the lever arm to rotate clockwise through the transmission arm, thereby driving the moving seat and the movable fork claw thereon away from the fixed fork claw. In the process of the movable fork claw moving away from the fixed fork claw, the movable fork claw will drive the electrode cap to gradually move away from the electrode rod, and finally remove the electrode cap from the electrode rod.

[0026] On the other hand, when the electrode cap to be disassembled is stuck with the electrode rod, the resistance torque of the screw will be equal to or greater than the threshold value. In this case, the shift mechanism cuts off the power transmission between the motor and the screw, and connects the power transmission between the motor and the percussion hammer. The motor drives the percussion hammer to move back and forth in the first direction through the shift mechanism, so that the percussion hammer continuously strikes the moving fork claw. The axial vibration generated by the percussion hammer striking the moving fork claw is transmitted to the electrode cap to be disassembled, which helps to loosen the electrode cap to be disassembled and the electrode rod, and release the stuck state. Once the stuck state between the electrode cap to be disassembled and the electrode rod is released, the resistance torque of the screw will be less than the threshold again. In this way, the motor can drive the screw to rotate through the shift mechanism to achieve the removal of the electrode cap from the electrode rod.

[0027] It can be seen that when the electrode cap to be disassembled is not stuck with the electrode rod, the present invention directly uses the hard pulling method to disassemble the electrode cap, and the disassembly speed is relatively fast. When the electrode cap to be disassembled is stuck with the electrode rod, the present invention first uses the impact of a hammer to release the stuck state, and then uses the hard pulling method to disassemble the electrode cap. In this way, while ensuring the disassembly speed, it also effectively solves the problems caused by the hard pulling method for disassembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0029] Figure 1 This is one of the overall structural diagrams of this embodiment (at this time, the movable fork claw is close to the fixed fork claw, and the striking hammer is pressed against the movable fork claw);

[0030] Figure 2 for Figure 1 A magnified view of part A;

[0031] Figure 3 for Figure 1 A magnified view of part B;

[0032] Figure 4 for Figure 3 CC section view;

[0033] Figure 5 This is the second schematic diagram of the overall structure of this embodiment (the movable fork claw is close to the fixed fork claw, and the striking hammer is far away from the movable fork claw);

[0034] Figure 6 This is the third schematic diagram of the overall structure of this embodiment (a cap collecting bucket is additionally provided, and at this time the movable fork claw is away from the fixed fork claw, and the striking hammer is pressed against the movable fork claw);

[0035] Figure 7 It is a partial structural schematic diagram of this embodiment;

[0036] Figure 8 Schematic diagram of the structure of the movable fork claw of this embodiment;

[0037] Fig. 9 Schematic diagram of the structure of the driven sleeve of this embodiment.

[0038] Description of reference numerals:

[0039] Frame 11, cap collecting bucket 12,

[0040] Cap removal mechanism 2,

[0041] Fixed fork claw 21, moving seat 22, movable fork claw 23, push block 24, first elastic member 25, thermal conductive silicone pad 26,

[0042] Card board 201,

[0043] Lever mechanism 3,

[0044] Lever arm 31, transmission block 32, transmission arm 33, transmission seat 34, screw rod 35,

[0045] Wedge groove 351,

[0046] Striking mechanism 4,

[0047] The striking hammer 41, the transmission rod 42, the second elastic member 43, the swing arm 44, the receiving beam 45, the receiving seat 46,

[0048] Retractor 421,

[0049] Shift mechanism 5,

[0050] Active sleeve 51, driven sleeve 52, locking pin 53, wedge 54, fixed magnet 55, moving magnet 56,

[0051] Locking groove 521, ratchet teeth 522,

[0052] Motor 6,

[0053] Friction heat generating seat 71 , friction heat generating block 72 , thermal expansion member 73 . DETAILED DESCRIPTION

[0054] The drawings are only used for illustrative purposes and should not be construed as limitations of this patent. In order to better illustrate this embodiment, some parts of the drawings may be omitted, enlarged, or reduced, and do not represent the size of the actual product.

[0055] For those skilled in the art, it is understandable that some well-known structures and their descriptions may be omitted in the drawings. The technical solution of the present invention is further described below in conjunction with the drawings and embodiments.

[0056] As shown in the accompanying drawings, an electric lever-type welding gun electrode cap removal device comprises a frame 11, a cap removal mechanism 2, a lever mechanism 3, a knocking mechanism 4, a shifting mechanism 5 and a motor 6;

[0057] The cap removal mechanism 2 includes a fixed fork claw 21 integrally connected to the frame 11, a movable seat 22 slidably connected to the frame 11 along a first direction, and a movable fork claw 23 slidably connected to the movable seat 22 along a first direction, and a clamping plate 201 is provided on both the fixed fork claw 21 and the movable fork claw 23;

[0058] The lever mechanism 3 includes a lever arm 31 hinged to the frame 11, a transmission block 32 hinged to a first end of the lever arm 31, a transmission arm 33 hinged to a second end of the lever arm 31 at a first end, a transmission seat hinged to a second end of the transmission arm 33, and a screw rod 35 threadedly connected to the transmission seat;

[0059] The transmission block 32 is slidably connected to the moving seat 22 along the second direction, and the first direction and the second direction are arranged non-parallel;

[0060] The striking mechanism 4 includes a striking hammer 41 which is slidably connected to the moving seat 22 along a first direction and can strike the moving fork claw 23;

[0061] The screw rod 35 and the striking hammer 41 are both connected to the motor 6 through the shift mechanism 5;

[0062] When the resistance torsion of the screw rod 35 is less than the threshold value, the shift mechanism 5 switches on the power transmission between the motor 6 and the screw rod 35 and cuts off the power transmission between the motor 6 and the hammer 41, and the motor 6 drives the screw rod 35 to rotate through the shift mechanism 5;

[0063] When the resistance torque of the screw rod 35 is equal to or greater than the threshold, the shift mechanism 5 cuts off the power transmission between the motor 6 and the screw rod 35, and connects the power transmission between the motor 6 and the striking hammer 41, and the motor 6 drives the striking hammer 41 to reciprocate along the first direction through the shift mechanism 5.

[0064] In this embodiment, the first direction is a vertical direction, and the second direction is a horizontal direction.

[0065] During operation, the movable fork claw 23 is adjacent to the fixed fork claw 21, and the clamping plates 201 of both are inserted into the axial gap between the electrode cap to be removed and the electrode rod. Then the motor 6 is started. When the electrode cap to be removed is not stuck between the electrode rod and the electrode rod, the resistance torque of the screw rod 35 will be less than the threshold value. In this case, the shift mechanism 5 connects the power transmission between the motor 6 and the screw rod 35, and cuts off the power transmission between the motor 6 and the hammer 41. The motor 6 drives the screw rod 35 to rotate through the shift mechanism 5, so that the transmission seat 34 threadedly connected to the screw rod 35 moves toward the first end of the screw rod 35. The transmission seat 34 drives the lever arm 31 to rotate clockwise through the transmission arm 33, thereby driving the moving seat 22 and the movable fork claw 23 thereon away from the fixed fork claw 21. In the process of the movable fork claw 23 moving away from the fixed fork claw 21, the movable fork claw 23 will drive the electrode cap to gradually move away from the electrode rod, and finally remove the electrode cap from the electrode rod.

[0066] Oxidation layers, deposits and other adhesion substances may form between the electrode cap and the electrode rod due to long-term use, high temperature, electrochemical reaction and other reasons. These substances will make the electrode cap and the electrode rod tightly combined, increase the friction between the two, and thus cause the electrode cap and the electrode rod to get stuck. In addition, the electrode cap may not be aligned with the electrode rod due to misalignment during assembly or slight displacement during use, which may also cause the jamming phenomenon.

[0067] When the electrode cap to be disassembled is stuck with the electrode rod, the resistance torque of the screw rod 35 will be equal to or greater than the threshold value. In this case, the shift mechanism 5 cuts off the power transmission between the motor 6 and the screw rod 35, and connects the power transmission between the motor 6 and the percussion hammer 41. The motor 6 drives the percussion hammer 41 to move back and forth along the first direction through the shift mechanism 5, so that the percussion hammer 41 continuously hits the moving fork claw 23. The axial vibration generated by the percussion hammer 41 hitting the moving fork claw 23 will transmit the electrode cap, which helps to destroy the adhesion between the electrode cap and the electrode rod, and helps to adjust the position of the electrode cap so that it is aligned with the electrode rod, so that the electrode cap to be disassembled and the electrode rod are loosened, and the stuck state is released. Once the stuck state between the electrode cap to be disassembled and the electrode rod is released, the resistance torque of the screw rod 35 will be less than the threshold value again. In this way, the motor 6 can drive the screw rod 35 to rotate through the shift mechanism 5 to achieve the removal of the electrode cap from the electrode rod.

[0068] It is understandable that when the electrode cap at the top of the electrode rod is removed, the removed electrode cap cannot fall directly in a straight line due to the obstruction of the electrode rod, but may collide with surrounding objects during the falling process, causing the electrode cap to bounce around, which is not conducive to the collection of the electrode cap. To solve this problem, preferably, a push block 24 is connected to the movable fork claw 23 in a sliding manner along the second direction, and the push block 24 is connected to the first elastic member 25, and the first elastic member 25 makes the push block 24 have a tendency to move away from the movable fork claw 23. A cap collecting bucket 12 is provided near the frame 11. When the clamping plate 201 of the movable fork claw 23 is inserted into the axial gap between the electrode cap to be removed and the electrode rod, the electrode cap pushes the push block 24 to move in the direction close to the movable fork claw 23, so that the first elastic member 25 is compressed and stores elastic energy. Subsequently, when the electrode cap is separated from the electrode rod, the first elastic member 25 releases the elastic energy, driving the push block 24 to move in the direction away from the movable fork claw 23, thereby ejecting the electrode cap just removed into the cap collecting bucket 12. This helps to prevent the electrode cap from colliding with surrounding objects during the falling process, thereby facilitating the collection of the electrode cap.

[0069] It should be noted that, in the case where the electrode cap to be disassembled is severely stuck with the electrode rod, knocking alone may not be enough to release the stuck state. For this reason, preferably, the movable fork claw 23 of the present embodiment is provided with a friction heating seat 71, and the percussion hammer 41 is provided with a friction heating block 72 that slides against the friction heating seat 71. The first elastic member 25 is made of a material with a high thermal conductivity coefficient, and the first elastic member 25 is thermally connected to the push block 24 and the friction heating seat 71. During the reciprocating movement of the percussion hammer 41 along the first direction, sliding friction occurs between the friction heating block 72 on the percussion hammer 41 and the friction heating seat 71, and heat is generated. This heat is transferred to the electrode cap through the first elastic member 25 and the push block 24, causing it to heat up. The heating of the electrode cap can not only soften or melt the adhesive material between it and the electrode rod, reducing the adhesion between the two, but also reduce the contact pressure between it and the electrode rod through the thermal expansion of the electrode cap, thereby reducing the friction between the two. These effects work together to help remove the electrode cap from the electrode rod.

[0070] Preferably, a heat-conducting silicone pad 26 is provided at one end of the push block 24 facing away from the friction heating seat 71, and the first elastic member 25 passes through the push block 24 and is in close contact with the heat-conducting silicone pad 26. During the disassembly process, when the clamping plate 201 of the movable fork claw 23 is inserted into the axial gap between the electrode cap to be disassembled and the electrode rod, the electrode cap will push the push block 24 to move in the direction close to the movable fork claw 23, so that the heat-conducting silicone pad 26 is in close contact with the side wall of the electrode cap, ensuring good contact between the two, thereby improving the heat transfer efficiency. In addition, the heat-conducting silicone pad 26 also acts as a buffer between the electrode cap and the push block 24 to avoid hard collision between the two.

[0071] In the case where the electrode cap to be disassembled and the electrode rod are severely stuck, if the stuck state cannot be released by continuously hitting with great force, the connection between the electrode rod and the electrode cap may eventually be damaged. To solve this problem, preferably, a heat expansion component 73 is connected between the friction heating block 72 and the striking hammer 41, and the pressure of the friction heating block 72 on the friction heating seat 71 is directly proportional to the temperature of the heat expansion component 73. In the case where the electrode cap to be disassembled and the electrode rod are severely stuck, the striking hammer 41 moves back and forth along the first direction and continuously strikes the moving fork claw 23. At first, the striking hammer 41 strikes the moving fork claw 23 with great force, but as the striking time increases, the heat generated by the friction heating seat 71 and the friction heating block 72 gradually accumulates, causing the temperature of the heat expansion component 73 to rise, the volume to increase, and the friction heating block 72 to be squeezed, thereby increasing the pressure of the friction heating block 72 on the friction heating seat 71. As the pressure of the friction heating block 72 on the friction heating seat 71 increases, the impact force of the hammer 41 on the movable fork claw 23 decreases, while the heat generated by the friction heating block 72 and the friction heating seat 71 increases. This design can automatically reduce the striking force after a strong striking is ineffective, while increasing the heat transferred to the electrode cap, enhancing the heating effect of the electrode cap, and thus helping to avoid damage to the connection between the electrode rod and the electrode cap.

[0072] As an example, the heat expansion member 73 may be a memory metal piece or an inflatable air bag.

[0073] Preferably, the shift mechanism 5 includes an active sleeve 51 rotatably sleeved on the outside of the screw rod 35, and a driven sleeve 52 rotatably sleeved on the outside of the active sleeve 51, the active sleeve 51 is integrally connected to the output shaft of the motor 6, and the hammer 41 is transmission-connected to the driven sleeve 52;

[0074] The active sleeve 51 is provided with a locking structure, which can connect the active sleeve 51 and the screw rod 35 into a whole, or connect the active sleeve 51 and the driven sleeve 52 into a whole.

[0075] Preferably, the locking structure includes a mounting hole passing through the side wall of the active sleeve 51, and a locking pin 53 slidably connected to the mounting hole, a bevel 54 is provided at one end of the locking pin 53 close to the screw rod 35, a wedge groove 351 matching the bevel 54 is provided on the side wall of the screw rod 35, a locking groove 521 matching the locking pin 53 is provided on the side wall of the driven sleeve 52, a fixed magnet 55 is embedded in the active sleeve 51, a moving magnet 56 is embedded in the locking pin 53, and the fixed magnet 55 causes the moving magnet 56 to tend to approach the screw rod 35.

[0076] Preferably, the striking hammer 41 is integrally connected with a transmission rod 42 extending along the first direction, and a second elastic member 43 is connected between the transmission rod 42 and the movable seat 22, and the second elastic member 43 makes the transmission rod 42 tend to approach the movable seat 22;

[0077] A hook 421 is disposed at the bottom end of the transmission rod 42 , a ratchet 522 is disposed on the driven sleeve 52 , and a swing arm 44 is connected between the hook 421 and the ratchet 522 .

[0078] Specifically, when the electrode cap to be removed is not stuck with the electrode rod, the resistance torque of the screw 35 will be less than the threshold value. At this time, since the resistance of the screw 35 to the inclined wedge 54 is not enough to overcome the magnetic force of the fixed magnet 55 and the moving magnet 56, the inclined wedge 54 on the locking pin 53 is embedded in the wedge groove 351 on the screw 35, and the locking pin 53 withdraws from the locking groove 521 on the driven sleeve 52, thereby connecting the active sleeve 51 and the screw 35 into a whole. In this state, the starting motor 6 can drive the screw 35 to rotate.

[0079] On the contrary, when the electrode cap to be disassembled is stuck with the electrode rod, the resistance torque of the screw rod 35 will be equal to or greater than the threshold value. At this time, the resistance of the screw rod 35 to the bevel wedge 54 is sufficient to overcome the magnetic force of the fixed magnet 55 and the moving magnet 56, so that the bevel wedge 54 withdraws from the wedge groove 351, and the locking pin 53 is inserted into the locking groove 521, thereby allowing the active sleeve 51 to drive the driven sleeve 52 to rotate. During the rotation of the driven sleeve 52, the ratchet teeth 522 thereon act on the swing arm 44. When the swing arm 44 is located at the top of the ratchet teeth 522, the swing arm 44 moves to the position farthest from the moving seat 22 with the drive rod 42 through the hook 421, and the elastic energy stored in the second elastic member 43 reaches the maximum. After the swing arm 44 passes the top of the ratchet teeth 522, the second elastic member 43 releases the elastic energy, drives the drive rod 42 to move in the direction close to the moving seat 22, and finally causes the knock hammer 41 on the drive rod 42 to hit the moving fork claw 23.

[0080] Preferably, in order to prevent the displacement of the movable seat 22 in the first direction from affecting the maximum elastic energy that the second elastic member 43 can store, the movable seat 22 is integrally connected to the receiving seat 46 through the receiving beam 45, the driven sleeve 52 is rotatably connected to the receiving seat 46, and the swing arm 44 is hinged to the receiving beam 45.

[0081] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. An electric lever-type welding gun electrode cap removal device, comprising a frame, characterized in that: It also includes a cap removal mechanism, a lever mechanism, a knocking mechanism, a shifting mechanism, and a motor; The cap removal mechanism comprises a fixed fork claw integrally connected to the frame, a movable seat slidably connected to the frame along a first direction, and a movable fork claw slidably connected to the movable seat along the first direction, and a clamping plate is provided on both the fixed fork claw and the movable fork claw; The lever mechanism comprises a lever arm hinged to the frame, a transmission block hinged to the first end of the lever arm, a transmission arm whose first end is hinged to the second end of the lever arm, a transmission seat hinged to the second end of the transmission arm, and a screw rod threadedly connected to the transmission seat; The transmission block is slidably connected to the moving seat along a second direction, and the first direction is non-parallel to the second direction; The striking mechanism comprises a striking hammer which is slidably connected to the movable seat along a first direction and is capable of striking the movable fork claw; The screw rod and the percussion hammer are both connected to the motor through a shifting mechanism; When the resistance torsion of the screw is less than a threshold value, the shift mechanism switches on the power transmission between the motor and the screw, and cuts off the power transmission between the motor and the hammer, and the motor drives the screw to rotate through the shift mechanism; When the resistance torque of the screw is equal to or greater than a threshold value, the shift mechanism cuts off the power transmission between the motor and the screw, and connects the power transmission between the motor and the percussion hammer, and the motor drives the percussion hammer to reciprocate in the first direction through the shift mechanism; The shift mechanism comprises an active sleeve rotatably sleeved on the outside of the screw rod, and a driven sleeve rotatably sleeved on the outside of the active sleeve, the active sleeve is integrally connected to the output shaft of the motor, and the percussion hammer is transmission-connected to the driven sleeve; The active sleeve is provided with a locking structure, and the locking structure can connect the active sleeve and the screw rod into a whole, or connect the active sleeve and the driven sleeve into a whole; The locking structure comprises a mounting hole penetrating through the side wall of the active sleeve, and a locking pin slidably connected to the mounting hole, an end of the locking pin close to the screw rod is provided with an inclined wedge, the side wall of the screw rod is provided with a wedge groove matching the inclined wedge, the side wall of the driven sleeve is provided with a locking groove matching the locking pin, a fixed magnet is embedded in the active sleeve, and a moving magnet is embedded in the locking pin, and the fixed magnet makes the moving magnet tend to approach the screw rod; The striking hammer is integrally connected to a transmission rod extending in a first direction, a second elastic member is connected between the transmission rod and the movable seat, and the second elastic member makes the transmission rod tend to approach the movable seat; A draw hook is provided at the bottom end of the transmission rod, a ratchet is provided on the driven sleeve, and a swing arm is connected between the draw hook and the ratchet.

2. The electric lever-type welding gun electrode cap removal device according to claim 1, characterized in that: A pushing block is slidably connected to the movable fork claw along the second direction, and the pushing block is connected to a first elastic member. The first elastic member causes the pushing block to tend to move away from the movable fork claw.

3. The electric lever-type welding gun electrode cap removal device according to claim 2, characterized in that: The movable fork claw is provided with a friction heating seat, the striking hammer is provided with a friction heating block that is in sliding contact with the friction heating seat, the first elastic member is made of a material with a high thermal conductivity coefficient, and the first elastic member is thermally connected to the push block and the friction heating seat.

4. The electric lever-type welding gun electrode cap removal device according to claim 3, characterized in that: A heat-conducting silicone pad is arranged at one end of the pushing block facing away from the friction heating seat, and the first elastic member passes through the pushing block and is in close contact with the heat-conducting silicone pad.

5. The electric lever-type welding gun electrode cap removal device according to claim 3, characterized in that: A heat expansion component is connected between the friction heat generating block and the striking hammer, and the pressure of the friction heat generating block on the friction heat generating seat is in direct proportion to the temperature of the heat expansion component.

6. The electric lever-type welding gun electrode cap removal device according to claim 1, characterized in that: The movable seat is integrally connected with the receiving seat via a receiving beam, the driven sleeve is rotatably connected with the receiving seat, and the swing arm is hinged with the receiving beam.

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