A control method and wrench for removing an electrode cap from a welding gun

Abstract

The present invention discloses a control method and a wrench for disassembling an electrode cap from a welding gun, the method comprising the following steps: providing a clamping piece, the clamping piece being composed of a lifting block and a limiting block, inserting the electrode cap on an electrode rod or an electrode arm into the clamping piece, and clamping it by the lifting block and the limiting block; keeping the limiting block stationary, applying a vertical upward force to the lifting block, so that the lifting block moves linearly along the axial direction of the electrode cap, and the lifting block pushes the electrode cap upward until the electrode cap is taken out from the electrode rod or the electrode arm, thereby completing the disassembly of the electrode cap. The present invention pulls the electrode cap directly out of the electrode rod or the electrode arm from the axial direction of the electrode cap, does not need to rotate the electrode cap, can avoid damage to the electrode rod or the electrode arm, and prolongs the service life of the electrode arm or the electrode rod.

Description

Technical Field

[0001] The invention belongs to the technical field of welding electrode caps, in particular to a control method and a wrench for disassembling an electrode cap from a welding gun. Background Art

[0002] The welding gun is equipped with an electrode cap. After use, the electrode cap needs to be removed and replaced with a new one to ensure continued smooth use.

[0003] Generally, a tapered section is provided on the electrode rod or electrode arm of the welding gun, and the electrode cap is installed in the tapered section. In order to improve the cooling effect, the cooling water is sealed at the corresponding position inside the electrode rod. At present, there are often two ways to disassemble the electrode cap. One is to rotate the electrode cap by disassembling the wrench, but because the electrode cap is interference fit on the tapered section of the electrode rod or electrode arm, during the rotation process, the surface between the electrode cap and the electrode rod or electrode arm will be subjected to mutual friction force, which is easy to cause surface damage to the tapered section of the electrode rod or electrode arm. In severe cases, it will cause the cooling water sealed inside to leak out, which will affect the normal operation of surrounding equipment and even damage the equipment. The second way is that the user supports one end of the electrode cap with a bolt, and then uses a hammer to hit the bolt to knock the electrode cap out, but this method is not only labor-intensive and has a low safety factor, but also frequent disassembly and assembly will cause deformation of the welding gun grip and the electrode cap limit hole, affecting the positioning accuracy of the electrode cap and the service life of the grip, thereby affecting product quality.

[0004] At present, the above disassembly methods are difficult to remove the electrode cap properly, which may easily cause damage to the electrode rod or electrode arm. Summary of the invention

[0005] In order to solve the above technical problems, the present invention provides a control method for disassembling an electrode cap from a welding gun.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0007] A control method for removing an electrode cap from a welding gun, the method comprising the following steps:

[0008] A clamping piece is provided, which is composed of a lifting block and a limiting block, and the electrode cap on the electrode rod or electrode arm is inserted into the clamping piece and clamped by the lifting block and the limiting block;

[0009] Keep the limit block stationary and apply a vertical upward force to the lifting block to make the lifting block move linearly along the axial direction of the electrode cap. The lifting block pushes the electrode cap upward until the electrode cap is removed from the electrode rod or electrode arm, completing the removal of the electrode cap.

[0010] The lifting block and the limiting block are connected together by a tension spring, and the lifting block and the limiting block are spliced ​​and assembled to form a cavity for inserting the electrode cap. When the lifting block and the limiting block are not subjected to external force, the lifting block and the limiting block are connected together.

[0011] When inserting the electrode cap on the electrode rod or electrode arm into the clamping piece, first apply a lateral force to the lifting block to pull the lifting block to move the lifting block away from the limit block, increase the distance between the lifting block and the limit block, then put the clamping piece on the electrode cap, and then cancel the force on the lifting block. The lifting block is reset by the rebound force of the tension spring and clamps the electrode cap together with the limit block.

[0012] A mounting seat is provided, an oblique groove is provided on the side wall of the mounting seat, a cam pin is provided on the limit block, the cam pin is movably placed in the oblique groove, a transversely protruding convex arm is provided on the upper part of the lifting block, the convex arm is placed on the upper surface of the mounting seat, and the lifting block is driven to move up and down by pushing or pulling the mounting seat.

[0013] A clamping wall is arranged at the bottom of the lifting block and the limiting block, and a tapered matching surface is arranged on the electrode rod or the electrode arm. The electrode cap is located on the tapered matching surface. The clamping walls of the lifting block and the limiting block are used to clamp the bottom surface of the electrode cap. When the lifting block moves upward, the clamping wall of the lifting block presses against the bottom surface of the electrode cap.

[0014] At least two tension springs are provided between the lifting block and the limiting block, and the spring strength of the tension springs is selected to be within 1 kg.

[0015] When moving the mounting seat, keep the mounting seat moving in the horizontal direction, so that the cam pin moves obliquely in the inclined groove, so that the mounting seat continuously pushes up the lifting block during the horizontal movement. When the electrode cap is loosened, the lifting block and the limit block keep the electrode cap clamped, and apply an upward force to the mounting seat, driving the electrode cap to separate from the electrode rod or electrode arm.

[0016] When the lifting block is lifted upward by the mounting seat, the lifting block is kept moving vertically upward, and during the upward movement of the lifting block, the lifting block and the limit block are still clamped by the force of the tension spring to keep the electrode cap in a clamped state.

[0017] A wrench comprises a handle, a mounting seat, a limit block and a lifting block. One end of the mounting seat is an open structure, the lifting block is located at the opening of the mounting seat, one end of the handle is connected to the front end of the mounting seat, the lifting block is movably connected to the limit block through a tension spring, the lifting block and one side of the limit block are spliced ​​and combined, the mounting seat is provided with an inclined groove, the limit block is provided with a cam pin, the cam pin is movably arranged in the inclined groove, and the upper part of the lifting block is clamped on the upper surface of the mounting seat.

[0018] Both sides of the upper part of the lifting block are provided with convex arms, and the left clamping plate and the right clamping plate support the convex arms on both sides of the lifting block.

[0019] Compared with the prior art, the present invention has the following beneficial technical effects:

[0020] The electrode cap is pulled out from the electrode rod or electrode arm in the axial direction of the electrode cap. During this process, the electrode cap does not need to be rotated, thereby avoiding damage to the electrode rod or electrode arm due to rotational friction and extending the service life of the electrode rod or electrode arm.

[0021] The invention can reduce the limitation of the gap between the electrode cap section and the electrode rod or electrode arm, has wide applicability and is not limited by the welding gun structure.

[0022] The process of removing the cap does not damage the circumferential surface of the electrode cap, which is conducive to the offline grinding of the electrode cap. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0024] Figure 2 It is a structural schematic diagram of another perspective of the present invention;

[0025] Figure 3 A schematic diagram of the present invention and an electrode cap in combination;

[0026] Figure 4 It is an exploded schematic diagram of the lifting block and the limiting block in the present invention;

[0027] Figure 5 It is a schematic diagram of the structure of an electrode cap in the prior art.

[0028] Reference numerals:

[0029] 1-handle; 2-mounting seat; 21-fixed seat; 22-left clamping plate; 23-right clamping plate; 3-limiting block; 4-tension spring; 5-lifting block; 6-cam pin; 7-oblique groove; 8-electrode cap; 9-electrode rod or electrode arm; 10-vertical groove; 11-card wall; 12-taper matching surface; 13-convex arm. DETAILED DESCRIPTION

[0030] The embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0031] In the description of the present invention, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like are involved, the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0032] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it 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 directly connected or indirectly connected through an intermediate medium. It can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] Embodiment 1

[0034] refer to Figure 1-3 As shown, a control method for removing an electrode cap from a welding gun comprises the following steps:

[0035] A clamping piece is provided, which is composed of a lifting block 5 and a stopper block 3. The electrode cap on the electrode rod or electrode arm is inserted into the clamping piece and clamped by the lifting block and the stopper block. The electrode cap is assembled on the electrode rod or electrode arm of the welding gun, which is a well-known technology, refer to Figure 5 As shown, an electrode cap 8 is installed on the electrode rod or electrode arm 9, and a tapered mating surface 12 is provided on the electrode rod or electrode arm, a clamping wall 11 is provided at the bottom of the lifting block 5 and the limiting block 3, the clamping wall 11 is located on the tapered mating surface 12, and the electrode cap is assembled on the tapered mating surface, and the clamping walls of the lifting block and the limiting block are used to clamp the bottom surface of the electrode cap, and when the lifting block moves upward, the clamping wall of the lifting block presses against the bottom surface of the electrode cap.

[0036] Keep the limit block still and apply a vertical upward force to the lifting block to make the lifting block move in a straight line along the axial direction of the electrode cap. The lifting block will push the electrode cap upward until the electrode cap is removed from the electrode rod or electrode arm, completing the removal of the electrode cap. Other tools can be used to apply force to the lifting block. When driving the lifting block to move, ensure that the lifting block moves in a straight line along the axial direction of the electrode cap, such as Figure 4 As shown, the product is placed vertically. At this time, the lifting block moves vertically upward, and there is no need to rotate the lifting block and the limit block. Then the electrode cap is correspondingly driven to move vertically upward, and is directly detached from the electrode rod or electrode arm. In this disassembly process, the electrode rod or electrode arm is subjected to internal force without torsional friction. At the same time, the probability of damage to the circumferential surface of the electrode cap can be reduced, which is conducive to the offline grinding of the electrode cap.

[0037] In addition, since the electrode cap is welded to the electrode rod or the electrode cap, when applying force to the lifting block, the force needs to reach a certain level to ensure that the electrode cap can be removed. In addition, in the actual operation process, avoid excessive and rapid force to prevent damage to the electrode cap and the electrode rod.

[0038] The lifting block 5 and the limiting block 3 are connected together through the tension spring 4. The lifting block 5 and the limiting block 3 are spliced ​​and assembled to form an electrode installation cavity. When the lifting block 5 and the limiting block 4 are not subjected to external forces, the lifting block and the limiting block are connected together. After closing, the tension spring will be stretched to a certain extent, so that the tension spring itself forms a rebound force, which pulls the lifting block and the limiting block in real time. In the absence of external forces, the lifting block and the limiting block are also tightly docked together, and a cavity is formed between the lifting block and the limiting block for inserting the electrode cap. In order to increase the tightening tension of the tension spring, two tension springs are set in this embodiment, which are respectively located on both sides of the limiting block, and bypass from the upper and lower parts of the lifting block to achieve a stable connection between the lifting block and the limiting block. In the natural state, the lifting block and the limiting block are tightly fitted due to the rebound tension of the tension spring. At this time, the size of the cavity formed between the lifting block and the limiting block is smaller than the size of the electrode cap.

[0039] When inserting the electrode cap 8 on the electrode rod or electrode arm 9 into the clamping part, first apply a lateral force to the lifting block, pull the lifting block, and move the lifting block in the direction away from the limit block to increase the distance between the lifting block and the limit block. Then insert the electrode cap between the lifting block and the limit block, and then cancel the force on the lifting block. The lifting block is reset by the rebound force of the tension spring and clamps the electrode cap together with the limit block. It should be noted here that if the lifting block is lifted a long distance, it is necessary to maintain the pulling force when releasing the lifting block to prevent the lifting block from returning quickly and catapulting onto the electrode cap to cause damage to the electrode cap. The spring strength of the tension spring is selected to be within 1kg to avoid excessive force and to be more ergonomic.

[0040] Embodiment 2

[0041] refer to Figure 1-3 As shown, in order to make the lifting block move more directional when operating, a mounting seat 2 is provided, an inclined groove 7 is provided on the side wall of the mounting seat 2, a cam pin 6 is provided on the limit block 3, and the cam pin 6 is movably placed in the inclined groove 7. A transversely protruding convex arm 13 is provided on the upper part of the lifting block 5, and the convex arm 13 is placed on the upper surface of the mounting seat 2. By pushing or pulling the mounting seat, the lifting block is driven to move up and down. The cam pin moves in the inclined groove to ensure the stability of the overall movement. The limit block remains stationary, and the mounting seat moves. During the movement of the mounting seat, when the lifting block is lifted upward, the vertical upward movement of the lifting block is maintained, and during the upward movement of the lifting block, the lifting block and the limit block are still clamped by the force of the tension spring. When the mounting seat moves to the end and cannot move further, if the electrode cap is still not detached, the mounting seat can be tilted to further lift the lifting block upward for disassembly of the electrode cap.

[0042] A pushing force can be applied from one side of the mounting seat to make the mounting seat move horizontally toward one side of the lifting block. The mounting seat lifts the lifting block upward, which is also beneficial to the force of the electrode cap.

[0043] During the operation, the lifting block is always kept moving upward, and the rotation of the lifting block can be prevented by the limitation of the mounting seat, thereby forming the axial force disassembly of the electrode cap, changing the traditional disassembly method that requires twisting the electrode cap.

[0044] Embodiment 3

[0045] refer to Figure 1-4As shown, the present invention also discloses a wrench specially used for removing the electrode cap, comprising a handle 1, a mounting seat 2, a limit block 3 and a lifting block 5, one end of the mounting seat is an open structure, the lifting block is located at the opening of the mounting seat, one end of the handle is connected to the front end of the mounting seat, the lifting block is movably connected to the limit block through a tension spring, the lifting block and one side of the limit block are spliced ​​and combined, the mounting seat is provided with an inclined groove 7, the limit block is provided with a cam pin 6, the cam pin 6 is movably arranged in the inclined groove 7, the lifting block 5 is provided with convex arms 13 on both sides of the upper part, and the mounting seat 2 supports the convex arms on both sides of the lifting block.

[0046] The mounting seat 2 comprises a fixing seat 21, a left clamping plate 22 and a right clamping plate 23, wherein the left clamping plate 22 and the right clamping plate 23 are respectively mounted on both sides of the fixing seat 21, so that a mounting cavity is formed between the left clamping plate 22 and the right clamping plate 23, and the limiting block 3 and the lifting block 5 are arranged in the mounting cavity between the left clamping plate 22 and the right clamping plate 23. The left clamping plate 22 and the right clamping plate 23 are plates of the same structure, which are symmetrically mounted on both sides of the fixing seat 21 and can be locked by screws, so that the installation and disassembly of the left clamping plate and the right clamping plate are convenient. In the third embodiment, in order to ensure the stability of the assembly, a screw is installed at each of the four corner positions on the fixing seat, so that the left clamping plate, the right clamping plate and the fixing seat are assembled into a stable and reliable integral component. The length of the fixing seat is less than the length of the left clamping plate. When the left clamping plate, the right clamping plate and the fixing seat are assembled together, a mounting cavity will also be formed between the left clamping plate and the right clamping plate, so that the assembly of the lifting block and the limiting block is convenient. The ends of the left clamping plate and the right clamping plate away from the fixing seat are in an open state, so that the lifting block can be pulled outwards to facilitate the installation of the electrode cap.

[0047] The inclined groove 7 is inclined, and the cam pin 6 is a structure with one end larger than the other. As for the inclined shape of the inclined groove, the cam pin is fixed on the limit block in an inclined direction from the rear end of the left clamp plate to the fixed seat from top to bottom. By pushing or pulling the handle, the entire mounting seat can be moved forward or backward, and then the lifting block will be driven to rise or fall. The inclined groove has a certain length, and it is necessary to ensure that when the cam pin moves to the right end of the inclined groove, the lifting block can be lifted to the highest height, and at this time, the electrode cap has been pulled out from the electrode rod or electrode arm.

[0048] In addition, a non-slip cover is usually provided on the handle 1 to facilitate holding by hand, and the non-slip cover is made of high temperature resistant rubber material to improve the safety of operation.

[0049] It should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. However, any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A control method for removing an electrode cap from a welding gun, It is characterized in that The method comprises the following steps: setting a clamping piece, which is composed of a lifting block and a limiting block, inserting the electrode cap on the electrode rod or electrode arm into the clamping piece, and clamping it by the lifting block and the limiting block; keeping the limiting block stationary, applying a vertical upward force to the lifting block, so that the lifting block moves linearly along the axial direction of the electrode cap, and the lifting block pushes the electrode cap upward until the electrode cap is removed from the electrode rod or electrode arm, thereby completing the removal of the electrode cap; connecting the lifting block and the limiting block together through a tension spring, and the lifting block and the limiting block The splicing and matching assembly forms a cavity for inserting the electrode cap. When the lifting block and the limit block are not subjected to external force, the lifting block and the limit block are connected together. When the electrode cap on the electrode rod or electrode arm is inserted into the clamping piece, a lateral force is first applied to the lifting block to pull the lifting block away from the limit block, thereby increasing the distance between the lifting block and the limit block. Then, the clamping piece is put on the electrode cap, and then the force applied to the lifting block is canceled. The lifting block is reset by the rebound force of the tension spring and clamps the electrode cap together with the limit block. A mounting seat is provided, an oblique groove is provided on the side wall of the mounting seat, a cam pin is provided on the limit block, the cam pin is movably placed in the oblique groove, a transversely protruding convex arm is provided on the upper part of the lifting block, the convex arm is placed on the upper surface of the mounting seat, and the lifting block is driven to move up and down by pushing or pulling the mounting seat; A clamping wall is arranged at the bottom of the lifting block and the limiting block, and a tapered matching surface is arranged on the electrode rod or the electrode arm. The electrode cap is located on the tapered matching surface. The clamping walls of the lifting block and the limiting block are used to clamp the bottom surface of the electrode cap. When the lifting block moves upward, the clamping wall of the lifting block presses against the bottom surface of the electrode cap.

2. The control method for removing the electrode cap from the welding gun according to claim 1, It is characterized in that At least two tension springs are provided between the lifting block and the limiting block, and the spring strength of the tension springs is selected to be within 1 kg.

3. The control method for removing the electrode cap from the welding gun according to claim 2, It is characterized in that When moving the mounting seat, keep the mounting seat moving in the horizontal direction, so that the cam pin moves obliquely in the inclined groove, so that the mounting seat continuously pushes up the lifting block during the horizontal movement. When the electrode cap is loosened, the lifting block and the limit block keep the electrode cap clamped, and apply an upward force to the mounting seat, driving the electrode cap to separate from the electrode rod or electrode arm.

4. The control method for removing the electrode cap from the welding gun according to claim 3, It is characterized in that When the lifting block is lifted upward by the mounting seat, the lifting block is kept moving vertically upward, and during the upward movement of the lifting block, the lifting block and the limit block are still clamped by the force of the tension spring to keep the electrode cap in a clamped state.

5. A wrench using the control method according to claim 1, It is characterized in that It includes a handle, a mounting seat, a limit block and a lifting block. One end of the mounting seat is an open structure. The lifting block is located at the opening of the mounting seat. One end of the handle is connected to the front end of the mounting seat. The lifting block is movably connected to the limit block through a tension spring. The lifting block and one side of the limit block are spliced ​​and combined. The mounting seat is provided with an inclined groove, and the limit block is provided with a cam pin. The cam pin is movably arranged in the inclined groove, and the upper part of the lifting block is clamped on the upper surface of the mounting seat.

6. The wrench according to claim 5, It is characterized in that Both sides of the upper part of the lifting block are provided with convex arms, and the left clamping plate and the right clamping plate support the convex arms on both sides of the lifting block.

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