Electrode cap lossless disassembly and assembly wrench

Abstract

The invention discloses an electrode cap lossless disassembly and assembly wrench which comprises a wedge block and a driving assembly for driving the wedge block to linearly move in the first direction. Two sliding blocks are oppositely arranged on the two sides, in the first direction, of the wedge block, and each sliding block movably abuts against the corresponding side face of the wedge block through a slope structure; the device further comprises a reset component, and the reset component is connected between the two sliding blocks, so that the two sliding blocks have the movement tendency of getting close to each other. Wherein each sliding block is provided with a matching surface facing the other sliding block, and the two matching surfaces jointly define a bayonet for accommodating the end part of an electrode cap; when the driving assembly drives the wedge block to linearly move, the two sliding blocks are driven to synchronously move linearly away from each other in the second direction perpendicular to the first direction through the interaction of the slope structures, and therefore ejection force in the axial direction of the electrode cap is applied to the electrode cap through the bayonet.

Description

Technical Field

[0001] This invention belongs to the field of electrode cap disassembly technology, specifically relating to a non-destructive electrode cap disassembly and assembly wrench. Background Technology

[0002] Electrode caps are an indispensable component in resistance welding (especially spot welding). During use, electrode caps experience wear and oxidation, performance degradation, and require specific assembly clearances, necessitating disassembly and replacement. Traditional disassembly methods involve manual removal or clamping the electrode cap and then rotating it for removal. These methods require two independent mechanisms (clamping and rotation), two power sources, resulting in a complex structure. Furthermore, the clamping process can cause deformation or wear to the electrode cap.

[0003] Patent CN211516378U discloses a welding electrode cap removal and installation wrench. This method requires clamping the electrode cap to be removed, then rotating it to create a relative rotational motion between the cap and the welding clamp arm, thus removing the cap. The clamping force deforms the cap and increases friction between the cap and the arm. This high friction causes relative rotation of the mating surfaces of the cap and arm, increasing wear on these surfaces. This tool and method for removing and installing electrode caps deforms and wears both the outer and inner surfaces, affecting the cap's performance and lifespan.

[0004] Patent CN115401637A discloses a control method and wrench for removing an electrode cap from a welding torch. The method uses the axial relative movement between a semi-circular lifting block and a semi-circular limiting block to separate the electrode cap, which is housed between the lifting block and the limiting block, from the electrode arm. Since the force of the lifting block only exerts a lifting force on half of the electrode cap, in addition to the upward lifting force, the electrode cap also generates an overturning torque, which causes additional uneven friction between the electrode cap and the electrode arm. This results in additional wear on the mating surfaces of the electrode cap and the electrode arm during assembly and disassembly, affecting the performance and lifespan of the electrode cap. Summary of the Invention

[0005] To address the problems existing in the prior art, this invention provides a non-destructive electrode cap removal and installation wrench. By utilizing rotational force and the interaction force between the slider and the wedge, the disassembly force of the electrode cap is amplified through the superposition of the two-stage force of the screw conveyor's inclined plane, making the disassembly and installation of the motor cap easier and reducing wear on the electrode cap during disassembly and installation.

[0006] The technical solution of this invention is implemented as follows:

[0007] A non-destructive electrode cap removal and installation wrench includes a wedge and a drive assembly that drives it to move linearly in a first direction.

[0008] The wedge has two sliders arranged opposite each other on both sides along the first direction, and each slider is in movable contact with the corresponding side of the wedge through an inclined structure.

[0009] It also includes a reset component, which is connected between the two sliders to give the two sliders a tendency to move closer to each other;

[0010] Each of the sliders has a mating surface facing the other slider, and the two mating surfaces together define a bayonet for receiving the end of the electrode cap; when the drive assembly drives the wedge to move linearly, the interaction of the inclined structure drives the two sliders to move synchronously away from each other in a second direction perpendicular to the first direction, thereby applying an axial push-out force to the electrode cap through the bayonet.

[0011] Furthermore, the two sliders are arranged in a mirror-symmetrical manner; the bayonet is formed by grooves formed on the mating surfaces of the two sliders respectively;

[0012] The wedge includes a connecting portion in the middle and wedge arms extending from both sides of the connecting portion toward the slider; the two sliders are provided with wedge grooves that cooperate with the wedge arms, and the inclined structure is formed between the contact surfaces of the wedge arms and the wedge grooves.

[0013] Specifically, the wedge arm is conical;

[0014] The wedge and slider are adapted to each other, with a central concave section. The wedge arms on both sides of the wedge extend toward the sides of the slider, with the extended portion widening from narrow to wide, forming upper and lower inclined surfaces. The two sliders fit into the upper and lower inclined surfaces of the wedge from the upper and lower ends, respectively.

[0015] Furthermore, the drive assembly includes a lead screw, a nut threadedly engaged with the lead screw, and a rotating handle for driving the lead screw to rotate; the nut is connected to the wedge block.

[0016] Specifically, the lead screw is a ball screw, the nut is a ball nut, and the side of the wedge away from the slider is provided with a ball nut and a ball screw that is compatible with the ball nut. One end of the ball screw is connected to the ball nut, and the other end is connected to a rotating handle.

[0017] Furthermore, the reset component is a tension spring, and each slider is provided with a fixing part for mounting the two ends of the tension spring; the slider is provided with a longitudinally penetrating tension spring channel, and the fixing part is a tension spring crossbar provided at both ends of the tension spring and locked in the groove on the outside of the slider.

[0018] Specifically, the reset component can also be a tension spring assembly, which includes a tension spring and tension spring crossbars respectively disposed at both ends of the tension spring.

[0019] Furthermore, the slider includes a connector and sliding arms located on both sides of the connector. The outward-facing side of the sliding arm is recessed inward to form a single-sided sliding groove. The single-sided sliding grooves of the upper and lower sliders are connected to form a wedge groove, and the wedge arm is engaged with the wedge groove on its side.

[0020] The slider arm is also provided with slider limit pins.

[0021] Specifically, the wedge arm extends from a wedge groove near the connecting part, and the extended part widens from narrow to wide, forming an upper inclined surface and a lower inclined surface; the upper and lower surfaces of the wedge groove respectively form slider inclined surfaces that are adapted to the upper and lower inclined surfaces of the wedge arm; the inclined surface structure is formed by the upper and lower inclined surfaces of the wedge block and the slider inclined surface of the slider.

[0022] The slider has a single-sided bayonet in the middle (i.e., a groove corresponding to the slider mating surface). The single-sided bayonet of two sliders are connected to form a bayonet. The thickness of the bayonet near the wedge is greater than the thickness of the bayonet away from the wedge.

[0023] Specifically, the relative displacement between the wedge and the two sliders is achieved by the mutual sliding between the upper and lower inclined surfaces of the wedge arm and the upper and lower surfaces of the slider wedge groove. That is, when the wedge moves away from the two sliders, it separates the two sliders; when the wedge moves closer to the two sliders, the two sliders come into contact with each other.

[0024] The middle of the single-sided bayonet is also concave. The single-sided bayonet of the two sliders fit together to form a bayonet. The bayonet gets thinner towards the outside, which makes it easy to insert the bayonet into the gap between the electrode cap and the welding clamp arm.

[0025] Specifically, each of the two sliders has a groove on its opposite side. These grooves are located on the sliding arm and are adapted to the tension spring crossbar. A tension spring channel extends from the groove towards the groove of the other slider, forming a through-passage between the two sliders. The tension spring is located within this channel, and the tension spring crossbars are respectively engaged in the corresponding grooves. The tension spring assembly brings the two sliders into contact with each other.

[0026] Specifically, each sliding arm has two tension springs, for a total of four tension springs. The tension spring crossbar is mainly used to fix the tension springs. When the wrench is not used, the two sliders are tightened and pressed together by the tension springs. When the wedge moves towards one end of the ball screw (i.e., away from the slider), it will separate the two sliders. When the wrench is stopped, the tension springs can help to tighten the two sliders and press them together to achieve a reset.

[0027] Specifically, the slider limiting pin is parallel to the tension spring channel and passes through the interior of the two sliders.

[0028] Specifically, the slider limit pin can serve as a guide to prevent deviation during movement and also prevent the two sliders from being over-pressed; the slider limit pin connects the two sliders and can also ensure the synchronization of the two sliders during sliding.

[0029] Furthermore, the wedge arm is provided with pin holes that penetrate its upper and lower inclined surfaces, and each pin hole is provided with two wedge block limiting pins, one upper and one lower.

[0030] Specifically, the inclined surface of the slider is also provided with a guide groove; one end of the wedge block limiting pin is located in the pin hole, and the other end extends to the corresponding guide groove.

[0031] Specifically, as the wedge moves, the portion of the wedge limiting pin located within the guide groove can reciprocate within the guide groove.

[0032] The wedge limit pin can guide the movement of the wedge to prevent deviation, and can also indirectly connect the wedge to the slider to ensure that the wedge arm slides back and forth in the wedge groove.

[0033] Specifically, the connecting part of the wedge block has a through hole in the middle, and several cylindrical head hexagonal screw holes are provided around the through hole; the ball nut has corresponding cylindrical head hexagonal screws around its periphery; the wedge block and the ball nut are connected to each other by cylindrical head hexagonal screws.

[0034] Specifically, the wedge and ball nut are fixedly connected by a cylindrical head hexagonal screw, ensuring that the wedge and ball nut move synchronously. The connection between the wedge and ball nut allows the wedge to move only along the direction of the ball screw when the ball screw rotates, as it is restricted by the slider (and housing). In other words, the rotational force is converted into the driving force for the translation of the wedge and ball nut.

[0035] Furthermore, the outer side of the slider is provided with a housing, which is adapted to the shape of the two sliders. The two sides of the housing are provided with wedge holes, and the wedge arms on both sides of the wedge block extend through the wedge holes to the two sides of the slider.

[0036] Specifically, in the middle of the housing, a fixing hole is provided at a position corresponding to the through hole of the wedge block connection part. A screw fixing screw is provided in the fixing hole. The ball screw extends through the ball nut into the through hole of the connection part. The screw fixing screw passes through the fixing hole from the side where the slider is located and is connected to the ball screw.

[0037] Specifically, the middle part of the housing is located between the connecting part of the slider and the connecting part of the wedge; the middle part of the housing is fixed between the slider and the wedge by a lead screw fixing screw.

[0038] The slider connector has a semi-circular half-nail hole on the side facing the wedge connection. The half-nail holes of the two sliders together form a nail hole. The head of the screw fixing screw is located in the nail hole, and the screw fixing screw does not pass through the slider. That is, the screw fixing screw is hidden on the side of the slider facing the middle part of the housing.

[0039] Furthermore, the nut is provided with a torsion spring limiting seat on the side facing the rotating handle; the torsion spring limiting seat is provided with a torsion spring on the side facing the rotating handle; the torsion spring surrounds the outside of the ball screw.

[0040] Specifically, the torsion spring limit seat, ball nut, and wedge block are fixedly connected in sequence using cylindrical head hexagonal screws.

[0041] Specifically, a spring washer is also fitted onto the cylindrical head hexagonal screw;

[0042] The torsion spring limiting seat is a hollow ring, and the torsion spring is connected to the torsion spring limiting seat to stop the torsion spring. The torsion spring can be used to realize the reset of the rotating handle. That is, after rotating the rotating handle to remove the electrode cap, the handle is released. The elastic force generated by the torsion spring causes the rotating handle to rotate in the opposite direction to reset. At the same time, the ball screw also rotates in the opposite direction. The ball nut moves together with the wedge towards the slider. The tension spring in the slider then pulls the two sliders together to complete the reset.

[0043] Furthermore, the rotating handle is a cylinder with an opening at one end, with one side of the opening facing the side where the wedge is located, and the rotating handle is positioned on the outside of the torsion spring.

[0044] Furthermore, the end of the lead screw away from the nut is provided with a handle connecting plate, and the handle connecting plate is provided with an internal hexagon countersunk screw. The rotating handle is connected to the handle connecting plate from the outside of the rotating handle through the internal hexagon countersunk screw.

[0045] The handle connecting plate is also provided with a lead screw limiting groove, and a lead screw limiting pin is provided in the lead screw limiting groove. The lead screw is provided with a limiting hole at one end of the handle connecting plate, and the lead screw limiting pin extends into the limiting hole.

[0046] The countersunk hexagonal screw located at the center of the handle connecting plate passes through the rotating handle, the handle connecting plate and extends into the lead screw, where it connects with the lead screw.

[0047] Specifically, the open end of the rotating handle is wrapped around the outside of the torsion spring limiting seat; the torsion spring is connected to the rotating handle; the other end of the torsion spring is connected to the torsion spring limiting seat; the torsion spring applies force to reset the rotating handle.

[0048] The central shaft of the handle, handle connecting plate, and ball screw is connected together by a countersunk hexagonal screw in the center. The screw limit pin on the handle connecting plate is inserted into the limit hole of the ball screw. When the handle is rotated, the handle connecting plate and the ball screw rotate together, thereby driving the ball nut to move.

[0049] Specifically, a polyurethane gasket is provided on the outer surface of one side of the housing, and pressure plates are provided at the upper and lower ends of the polyurethane gasket.

[0050] Specifically, the compression plate is used to fix the polyurethane gasket; the polyurethane gasket can achieve a shock absorption effect.

[0051] The electrode cap is fixed on the welding clamp arm. The slot between the two sliders is locked between the motor cap and the welding clamp arm. Rotating the rotating handle drives the lead screw to rotate, and the nut drives the wedge to move away from the slider. The upper and lower sliders move relative to each other along the upper and lower inclined surfaces of the wedge, causing the two sliders to separate from each other, thereby driving the electrode cap to separate from the welding clamp arm.

[0052] Compared with the prior art, the present invention achieves the following beneficial effects:

[0053] This invention provides a non-destructive electrode cap removal and installation wrench, including a wedge and two sliders. The wedge is inserted between the two sliders, and its contact surface is inclined. The wedge is also connected to a nut and a lead screw. There is a locking slot between the two sliders. The locking slot is inserted into the gap between the motor cap and the welding clamp arm. A rotational force is applied to the ball screw, driving the nut and the wedge to move away from the sliders, so that the wedge separates the two sliders and realizes the removal of the electrode cap.

[0054] When the handle is turned, a small torque is used to generate a large axial pulling force to pull the wedge. When the wedge moves, the wedge and the inclined surfaces of the upper and lower sliders are used to further amplify the force generated by the movement of the wedge into a force that separates the sliders. Therefore, the small steering force provided when turning the handle can generate a large force that separates the upper and lower sliders, making it easier to assemble and disassemble the motor cap.

[0055] Furthermore, since the forces that separate the upper and lower sliders are both pulling against each other and act on the axial direction of the electrode cap, there is no clamping force on the electrode cap, no force that deviates from the axial direction of the electrode cap, and no bending moment or torque relative to the axial direction of the electrode cap. Therefore, the damage and wear of the electrode cap during the disassembly and assembly process is minimized. Attached Figure Description

[0056] Figure 1 This is a schematic diagram of a non-destructive electrode cap removal and installation wrench provided in an embodiment of the present invention;

[0057] Figure 2This is a schematic diagram of the shell removal structure of an electrode cap non-destructive disassembly and assembly wrench provided in an embodiment of the present invention;

[0058] Figure 3 This is one of the partial exploded structural diagrams of an electrode cap non-destructive disassembly and assembly wrench provided in an embodiment of the present invention;

[0059] Figure 4 This is the second partially exploded structural diagram of an electrode cap non-destructive disassembly and assembly wrench provided in an embodiment of the present invention;

[0060] Figure 5 This is a schematic diagram of the wedge structure of a non-destructive electrode cap removal and installation wrench provided in an embodiment of the present invention;

[0061] Figure 6 This is an exploded view of the wedge and slider structure of a non-destructive electrode cap disassembly and assembly wrench provided in an embodiment of the present invention;

[0062] Figure 7 This is a schematic diagram of the two slider structures of an electrode cap non-destructive disassembly and assembly wrench provided in an embodiment of the present invention;

[0063] Figure 8 This is a schematic diagram of a single slider structure of an electrode cap non-destructive disassembly and assembly wrench provided in an embodiment of the present invention;

[0064] Figure 9 This is a schematic diagram of the ball nut structure of a non-destructive electrode cap disassembly and assembly wrench provided in an embodiment of the present invention;

[0065] Figure 10 This is a schematic diagram of a torsion spring limiting seat structure for a non-destructive electrode cap removal and installation wrench provided in an embodiment of the present invention;

[0066] Figure 11 This is a schematic diagram of the ball screw and handle connecting plate structure of an electrode cap non-destructive disassembly and assembly wrench provided in an embodiment of the present invention;

[0067] Figure 12 This is a schematic diagram of the ball screw structure of a non-destructive electrode cap disassembly and assembly wrench provided in an embodiment of the present invention;

[0068] Figure 13 This is a schematic diagram of the handle connecting plate structure of an electrode cap non-destructive disassembly and assembly wrench provided in an embodiment of the present invention;

[0069] Figure 14 This is a schematic diagram of the housing structure of an electrode cap non-destructive disassembly and assembly wrench provided in an embodiment of the present invention.

[0070] Figure label:

[0071] 1. Wedge block; 11. Connecting part; 111. Through hole; 12. Wedge arm; 121. Upper inclined surface; 122. Lower inclined surface; 123. Pin hole; 13. Wedge block limiting pin; 14. Cylindrical head socket head cap screw;

[0072] 2. Slider; 21. Bayonet; 211. Single-sided bayonet; 22. Wedge groove; 221. Single-sided slide groove; 222. Slider inclined surface; 223. Guide groove; 23. Rod groove; 231. Tension spring channel; 24. Slider limiting pin;

[0073] 3. Ball bearing nut;

[0074] 4. Ball screw; 41. Limiting hole;

[0075] 5. Tension spring assembly; 51. Tension spring; 52. Tension spring crossbar;

[0076] 6. Rotating handle; 61. Handle connecting plate; 611. Screw limit groove; 612. Screw limit pin; 613. Socket head screw

[0077] 7. Torsion spring limit seat; 71. Torsion spring;

[0078] 8. Housing; 81. Wedge hole; 82. Fixing hole; 83. Screw fixing screw; 84. Polyurethane gasket; 841. Pressure plate. Detailed Implementation

[0079] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions in the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this invention, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0080] Example

[0081] like Figures 1 to 14 A non-destructive electrode cap removal and installation wrench includes a wedge 1 and a drive assembly that drives it to move linearly in a first direction.

[0082] Two sliders 2 are arranged opposite each other on both sides of the wedge block 1 along the first direction, and each slider 2 is in movable contact with the corresponding side of the wedge block 1 through an inclined structure.

[0083] It also includes a reset component, which is connected between the two sliders 2, so that the two sliders 2 have a tendency to move closer to each other;

[0084] Each of the sliders 2 has a mating surface facing the other slider 2, and the two mating surfaces together define a bayonet 21 for receiving the end of the electrode cap. When the drive assembly drives the wedge 1 to move linearly, the interaction of the inclined structure drives the two sliders 2 to move synchronously away from each other in a second direction perpendicular to the first direction, thereby applying an axial push-out force to the electrode cap through the bayonet 21.

[0085] The two sliders 2 are arranged in a mirror-symmetrical manner; the bayonet 21 is formed by grooves formed on the mating surfaces of the two sliders 2 respectively;

[0086] The wedge 1 includes a connecting part 11 in the middle and wedge arms 12 extending from both sides of the connecting part 11 toward the slider 2; the two sliders 2 are provided with wedge grooves 22 that cooperate with the wedge arms 12, and the inclined structure is formed between the contact surfaces of the wedge arms 12 and the wedge grooves 22.

[0087] Specifically, wedge arm 12 is conical;

[0088] The wedge 1 is adapted to the shape of the slider 2, with a concave center. The wedge arms 12 on both sides of the wedge 1 extend to both sides of the slider 2, and the extended part becomes wider and forms upper and lower inclined surfaces 122. The two sliders 2 fit into the upper and lower inclined surfaces 122 of the wedge 1 from the upper and lower ends respectively.

[0089] The drive assembly includes a lead screw, a nut threaded to the lead screw, and a rotating handle 6 for driving the lead screw to rotate; the nut is connected to the wedge block 1.

[0090] Specifically, the lead screw is a ball screw 4, the nut is a ball nut 3, and the wedge block 1 is provided with a ball nut 3 and a ball screw 4 adapted to the ball nut 3 on the side away from the slider 2. One end of the ball screw 4 is connected to the ball nut 3, and the other end is connected to a rotating handle 6.

[0091] The reset component is a tension spring 51, and each slider 2 is provided with a fixing part for mounting the two ends of the tension spring 51; the slider 2 is provided with a longitudinally penetrating tension spring channel 231, and the fixing part is a tension spring crossbar 52 provided at both ends of the tension spring 51 and locked in the groove on the outside of the slider 2.

[0092] Specifically, the reset component can also be a tension spring assembly 5, which includes a tension spring 51 and tension spring crossbars 52 respectively disposed at both ends of the tension spring 51.

[0093] The slider 2 includes a connector and sliding arms located on both sides of the connector. The outer side of the sliding arm is recessed to form a single-sided sliding groove 221. The single-sided sliding grooves 221 of the upper and lower sliders 2 are connected to form a wedge groove 22. The wedge arm 12 is engaged with the wedge groove 22 on its side.

[0094] The slider 2 is also provided with slider limit pins 24 on its slider arm.

[0095] Specifically, the wedge arm 12 extends from a wedge groove 22 near the connecting part 11, and the extended part widens from narrow to wide, forming an upper inclined surface 121 and a lower inclined surface 122; the upper and lower surfaces of the wedge groove 22 respectively form slider inclined surfaces 222 that are adapted to the upper and lower inclined surfaces 122 of the wedge arm 12; the inclined surface structure is formed by the upper inclined surface 121 and the lower inclined surface 122 of the wedge block 1, and the slider inclined surface 222 of the slider 2;

[0096] The slider 2 has a single-sided slot 21 in the middle (that is, the groove corresponding to the mating surface of the slider 2). The single-sided slots 21 of the two sliders 2 are connected to form a slot 21. The thickness of the slot 21 near the wedge 1 is greater than the thickness of the end away from the wedge 1.

[0097] Specifically, by utilizing the mutual sliding between the upper and lower inclined surfaces 122 of the wedge arm 12 and the upper and lower surfaces of the wedge groove 22 of the slider 2, the relative displacement between the wedge block 1 and the two sliders 2 is achieved. That is, when the wedge block 1 moves away from the two sliders 2, it separates the two sliders 2 from each other; when the wedge block 1 moves closer to the two sliders 2, the two sliders 2 come into contact with each other.

[0098] The middle of the single-sided bayonet 21 is also concave. The single-sided bayonet 21 of the two sliders 2 fit together to form a bayonet 21. The bayonet 21 becomes thinner towards the outside, which makes it easier to insert the bayonet 21 into the gap between the electrode cap and the welding clamp arm.

[0099] Specifically, each of the two sliders 2 has a groove 23 on its opposite side. The groove 23 is located on the sliding arm and is adapted to the tension spring crossbar 52. A tension spring channel 231 extends from the groove 23 towards the groove 23 of the other slider 2, forming a through-passage between the two sliders 2. The tension spring 51 is disposed in the tension spring channel 231, and the tension spring crossbar 52 is respectively engaged in the corresponding groove 23. The tension spring assembly 5 brings the two sliders 2 into contact with each other.

[0100] Specifically, each sliding arm is equipped with two tension springs 51, for a total of four tension springs 51. The tension spring crossbar 52 is mainly used to fix the tension springs 51. When the wrench is not used, the two sliders 2 are tightened and pressed against each other by the tension springs 51. When the wedge 1 moves towards one end of the ball screw 4 (i.e., away from the slider 2), it will separate the two sliders 2. When the wrench is stopped, the tension springs 51 can help to tighten the two sliders 2 and press them against each other to achieve a reset.

[0101] Specifically, the slider limiting pin 24 is parallel to the tension spring channel 231 and passes through the interior of the two sliders 2.

[0102] Specifically, the slider limit pin 24 can serve as a guide to prevent deviation during movement and also prevent the two sliders 2 from being overly pressed together; the slider limit pin 24 connects the two sliders 2 together and can also ensure the synchronicity of the two sliders 2 during sliding.

[0103] The wedge arm 12 is provided with pin holes 123 that penetrate its upper and lower inclined surfaces 122, and each pin hole 123 is provided with two wedge block limiting pins 13, one upper and one lower.

[0104] Specifically, the inclined surface 222 of the slider is also provided with a guide groove 223; one end of the wedge block limiting pin 13 is located in the pin hole 123, and the other end extends to the corresponding guide groove 223.

[0105] Specifically, as the wedge 1 moves, the portion of the wedge limiting pin 13 located within the guide groove 223 can reciprocate within the guide groove 223.

[0106] The wedge limit pin 13 can guide the movement of the wedge 1 to prevent deviation, and can also indirectly connect the wedge 1 to the slider 2 to ensure that the wedge arm 12 slides back and forth in the wedge groove 22.

[0107] Specifically, the connecting part 11 of the wedge block 1 has a through hole 111 in the middle, and a plurality of cylindrical head hexagon socket screw 14 holes are provided around the through hole 111; the ball nut 3 has corresponding cylindrical head hexagon socket screw 14 holes around its periphery; the wedge block 1 and the ball nut 3 are connected to each other by cylindrical head hexagon socket screw 14.

[0108] Specifically, the wedge 1 and the ball nut 3 are fixedly connected by the cylindrical head hexagon socket screw 14, ensuring that the wedge 1 and the ball nut 3 move synchronously. Furthermore, by utilizing the connection between the wedge 1 and the ball nut 3, when the ball screw 4 rotates, the wedge 1 cannot rotate due to the restriction of the slider 2 (and the housing 8), and can only move along the direction of the ball screw 4. That is, the rotational force is converted into the driving force for the translation of the wedge 1 and the ball nut 3.

[0109] The ball nut 3 is provided with a torsion spring 71 limiting seat on the side facing the rotating handle 6; the torsion spring 71 is provided with a torsion spring 71 on the side facing the rotating handle 6; the torsion spring 71 surrounds the outside of the ball screw 4.

[0110] Specifically, the torsion spring 71 limit seat, ball nut 3 and wedge block 1 connection part 11 are fixedly connected in sequence by the cylindrical head hexagon screw 14.

[0111] Specifically, a spring washer is also fitted onto the cylindrical head socket screw 14;

[0112] The torsion spring 71 limiting seat is a hollow ring, and the torsion spring 71 is connected to the torsion spring 71 limiting seat to limit and stop the torsion spring 71. The torsion spring 71 can be used to realize the reset of the rotating handle 6. That is, after rotating the rotating handle 6 to complete the removal of the electrode cap, the handle is released. The elastic force generated by the torsion spring 71 causes the rotating handle 6 to rotate in the opposite direction to reset. At the same time, the ball screw 4 also rotates in the opposite direction. The ball nut 3 moves together with the wedge block 1 towards the slider 2. The tension spring 51 in the slider 2 then pulls the two sliders 2 together to complete the reset.

[0113] The outer side of the slider 2 is also provided with a housing 8, which is adapted to the shape of the two sliders 2. The two sides of the housing 8 are provided with wedge holes 81, and the wedge arms 12 on both sides of the wedge block 1 extend through the wedge holes 81 to the two sides of the slider 2.

[0114] Specifically, in the middle of the housing 8, a fixing hole 82 is provided at a position corresponding to the through hole 111 of the wedge block 1 connecting part 11. A screw fixing screw 83 is provided in the fixing hole 82. The ball screw 4 extends through the ball nut 3 into the through hole 111 of the connecting part 11. The screw fixing screw 83 passes through the fixing hole 82 from the side where the slider 2 is located and is connected to the ball screw 4.

[0115] Specifically, the middle part of the housing 8 is located between the connector of the slider 2 and the connector 11 of the wedge 1; the middle part of the housing 8 is fixed between the slider 2 and the wedge 1 by means of the lead screw 83.

[0116] The side of the connector of the slider 2 facing the connecting part 11 of the wedge block 1 has a semi-circular half-nail hole, and the half-nail holes of the two sliders 2 together form a nail hole; the nail head of the screw fixing screw 83 is located in the nail hole, and the screw fixing screw 83 does not pass through the slider 2; that is, the screw fixing screw 83 is hidden on the side of the slider 2 facing the middle part of the housing 8.

[0117] The rotating handle 6 is a cylinder with an opening at one end, with one side of the opening facing the side where the wedge block 1 is located. The rotating handle 6 is sleeved on the outside of the torsion spring 71.

[0118] The end of the lead screw away from the nut is provided with a handle connecting plate 61. The handle connecting plate 61 is provided with an internal hexagon countersunk screw. The rotating handle 6 is connected to the handle connecting plate 61 from the outside through the internal hexagon countersunk screw.

[0119] The handle connecting plate 61 is also provided with a lead screw limiting groove 611, and a lead screw limiting pin 612 is provided in the lead screw limiting groove 611. The lead screw is provided with a limiting hole 41 at one end of the handle connecting plate 61, and the lead screw limiting pin 612 extends into the limiting hole 41.

[0120] The hexagon countersunk screw located at the center of the handle connecting plate 61 passes through the rotating handle 6 and the handle connecting plate 61 in sequence and extends into the lead screw, connecting with the lead screw.

[0121] Specifically, the open end of the rotating handle 6 surrounds the outside of the limiting seat of the torsion spring 71; the torsion spring 71 is connected to the rotating handle 6; the other end of the torsion spring 71 is connected to the limiting seat of the torsion spring 71; the torsion spring 71 applies force to reset the rotating handle 6.

[0122] The central shaft of the rotating handle 6, the handle connecting plate 61, and the ball screw 4 are connected together by the central hexagon countersunk screw. The screw limit pin 612 on the handle connecting plate 61 is inserted into the limit hole 41 of the ball screw 4. When the rotating handle 6 is rotated, the handle connecting plate 61 and the ball screw 4 rotate together, thereby driving the ball nut 3 to move.

[0123] Specifically, a polyurethane gasket 84 is provided on the outer surface of one side of the housing 8, and pressure plates 841 are provided at the upper and lower ends of the polyurethane gasket 84.

[0124] Specifically, the pressure plate 841 is used to fix the polyurethane gasket 84; the polyurethane gasket 84 can achieve a shock absorption effect.

[0125] The electrode cap is fixed on the welding clamp arm. The slot 21 between the two sliders 2 is locked between the motor cap and the welding clamp arm. The rotating handle 6 is rotated, which drives the lead screw to rotate. The nut drives the wedge block 1 to move away from the slider 2. The upper and lower sliders 2 move relative to each other along the upper and lower inclined surfaces 122 of the wedge block 1, causing the two sliders 2 to separate from each other, thereby driving the electrode cap to separate from the welding clamp arm.

[0126] This invention provides a non-destructive electrode cap removal and installation wrench. When the wrench is not in use, the upper and lower sliders 2 are tightened by the tension spring 51 and fit together.

[0127] When using a wrench to remove the electrode cap from the welding clamp arm, align the slots 21 formed by the two sliders 2 with the gap between the electrode cap and the step of the welding clamp arm. Since the slots 21 are inclined, they become thinner towards the outside. When the slots 21 are inserted into the lower end of the motor cap, that is, the gap between the electrode cap and the welding clamp arm, the inclined surface of the slots 21 of the sliders 2 is in close contact with the step of the welding clamp arm. In other words, the slots 21 fill the gap. At this time, the thickness of the slots 21 is the same as the height of the gap between the electrode cap and the welding clamp arm.

[0128] Then, rotate the handle 6. Rotating the handle 6 and the handle connecting plate 61 drives the ball screw 4 to rotate. The ball screw 4 drives the ball nut 3 to move away from the slider 2. That is, the rotational force of the ball screw 4 is converted into the axial force of the ball nut 3. The ball nut 3 then drives the wedge block 1 to move away from the slider 2. By utilizing the structure of the wedge block 1 and the slider 2, the two sliders 2 are separated from each other, thereby lifting the motor cap and separating the electrode cap from the welding clamp arm, thus completing the disassembly of the motor cap.

[0129] After the electrode cap is lifted off the welding clamp arm, stop rotating the handwheel. At this time, under the torsional torque of the torsion spring 71, the ball screw 4 rotates in the opposite direction, and the ball nut 3 and the wedge block 1 also move in the opposite direction. The two sliders 2 approach each other and fit together under the action of the tension spring 51, returning to the initial state and completing the reset, so that the next disassembly and assembly can be carried out.

[0130] The present invention provides a non-destructive electrode cap removal and installation wrench that can remove and install electrode caps in a labor-saving, fast, efficient and non-destructive manner, thereby improving production efficiency, reducing electrode cap wear and tear and saving production costs.

[0131] Utilizing the principles of a spiral and an inclined plane, the manual force is amplified. Through the superposition of the spiral and the inclined plane, the disassembly force acting on the electrode cap is greatly amplified, making the installation and removal of the electrode cap much easier. Furthermore, the force for disassembling the electrode cap is along its axis; there is no clamping force, no rotational torque around the electrode cap's axis, and no overturning torque on the plane of the electrode cap's axis. Therefore, rotational friction between the electrode cap and the welding clamp arm is avoided during installation and removal, and there are no forces that could alter the shape of the electrode cap, minimizing wear and deformation during the process.

[0132] Based on the disclosure and teachings of the foregoing specification, those skilled in the art can make changes and modifications to the above embodiments. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and some modifications and changes to the present invention should also fall within the protection scope of the claims of the present invention. Furthermore, although some specific terms are used in this specification, these terms are only for convenience of explanation and do not constitute any limitation on the present invention.

Claims

1. A non-destructive electrode cap removal and installation wrench, comprising a wedge and a drive assembly for driving it to move linearly along a first direction; characterized in that, The wedge has two sliders arranged opposite each other on both sides along the first direction, and each slider is in movable contact with the corresponding side of the wedge through an inclined structure. It also includes a reset component, which is connected between the two sliders to give the two sliders a tendency to move closer to each other; Each of the sliders has a mating surface facing the other slider, and the two mating surfaces together define a bayonet for receiving the end of the electrode cap; when the drive assembly drives the wedge to move linearly, the interaction of the inclined structure drives the two sliders to move synchronously away from each other in a second direction perpendicular to the first direction, thereby applying an axial push-out force to the electrode cap through the bayonet.

2. The electrode cap non-destructive disassembly and assembly wrench according to claim 1, characterized in that, The two sliders are arranged in a mirror-symmetrical manner; the bayonet is formed by grooves formed on the mating surfaces of the two sliders respectively; The wedge includes a connecting portion in the middle and wedge arms extending from both sides of the connecting portion toward the slider; the two sliders are provided with wedge grooves that cooperate with the wedge arms, and the inclined structure is formed between the contact surfaces of the wedge arms and the wedge grooves.

3. The electrode cap non-destructive disassembly and assembly wrench according to claim 1, characterized in that, The drive assembly includes a lead screw, a nut threaded to the lead screw, and a rotating handle for driving the lead screw to rotate; the nut is connected to the wedge block.

4. The electrode cap non-destructive disassembly and assembly wrench according to claim 1, characterized in that, The reset component is a tension spring, and each slider is provided with a fixing part for mounting the two ends of the tension spring; the slider is provided with a longitudinally penetrating tension spring channel, and the fixing part is a tension spring crossbar set at both ends of the tension spring and locked in the groove on the outside of the slider.

5. The electrode cap non-destructive disassembly and assembly wrench according to claim 2, characterized in that, The slider includes a connector and sliding arms located on both sides of the connector. The outward-facing side of the sliding arm is recessed inward to form a single-sided sliding groove. The single-sided sliding grooves of the upper and lower sliders are connected to form a wedge groove, and the wedge arm is engaged with the wedge groove on its side. The slider arm is also provided with slider limit pins.

6. The electrode cap non-destructive disassembly and assembly wrench according to claim 2, characterized in that, The wedge arm is provided with pin holes that penetrate its upper and lower inclined surfaces, and each pin hole is provided with two wedge block limiting pins, one upper and one lower.

7. The electrode cap non-destructive disassembly and assembly wrench according to claim 2, characterized in that, The outer side of the slider is also provided with a housing, which is adapted to the shape of the two sliders. The two sides of the housing are provided with wedge holes, and the wedge arms on both sides of the wedge block extend through the wedge holes to both sides of the slider.

8. The electrode cap non-destructive disassembly and assembly wrench according to claim 3, characterized in that, The nut is provided with a torsion spring limiting seat on the side facing the rotating handle; the torsion spring limiting seat is provided with a torsion spring on the side facing the rotating handle; the torsion spring surrounds the outside of the lead screw.

9. The electrode cap non-destructive disassembly and assembly wrench according to claim 7, characterized in that, The rotating handle is a cylinder with an opening at one end, with one side of the opening facing the side where the wedge is located, and the rotating handle sleeve is located on the outside of the torsion spring.

10. The electrode cap non-destructive disassembly and assembly wrench according to claim 3, characterized in that, The end of the lead screw away from the nut is provided with a handle connecting plate, and the handle connecting plate is provided with an internal hexagon countersunk screw. The rotating handle is connected to the handle connecting plate from the outside of the rotating handle through the internal hexagon countersunk screw. The handle connecting plate is also provided with a lead screw limiting groove, and a lead screw limiting pin is provided in the lead screw limiting groove. The lead screw is provided with a limiting hole at one end of the handle connecting plate, and the lead screw limiting pin extends into the limiting hole. The countersunk hexagonal screw located at the center of the handle connecting plate passes through the rotating handle, the handle connecting plate and extends into the lead screw, where it connects with the lead screw.

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