Welding head structure convenient to disassemble and assemble

Abstract

The utility model discloses a welding head structure convenient to disassemble and assemble, which comprises a welding main body, a welding rod used for installing a welding head, and a clamping structure used for fixing the welding rod, a clamping assembly comprises a locking nut and an annular locking part, the annular locking part is arranged on the welding main body in an extending manner, and the welding main body is provided with an installing hole penetrating through the annular locking part. The inner diameter of the opening end of the mounting hole is larger than that of the hole bottom; the diameter of one end of the welding rod corresponding to the mounting hole is gradually reduced from the middle part to the end part; the outer wall of the welding rod is provided with an abutting step, the locking nut is inwards provided with an abutting portion corresponding to the abutting step in the radial direction, the welding rod is provided with an abutting step corresponding to the abutting portion, and when the locking nut rotates and retreats in the unlocking direction relative to the welding body, the abutting portion is matched with the abutting step in a pushing mode. The welding rod is convenient to disassemble and assemble, and the service life is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to electric welding device technical field, especially in kind of welding head structure convenient to dismount. BACKGROUND

[0002] The patent with the announcement number CN1260036C discloses a welding gun electrode dismounting part structure, which is formed by installing a detachable joint on the electrode clamp with a communication hole of a cooling water passage communicating with a gun arm and installing an electrode head on the joint.

[0003] However, the welding gun electrode dismounting part structure has the following defects: the electrode head is inconvenient to dismount, the motor head needs to be pulled out of the joint through external clamping tools, the operation is troublesome, and the electrode head is easily damaged. UTILITY MODEL CONTENTS

[0004] The utility model discloses a kind of welding head structures convenient to dismount, with the effect that welding rod is convenient to dismount, prolongs service life.

[0005] The above technical purpose of the utility model is realized by the following technical scheme: a kind of welding head structure convenient to dismount, including welding main body, welding rod for installing welding head, clamping structure for fixing the welding rod, the clamping assembly includes locking nut and annular locking portion, the annular locking portion extends on the welding main body, and the welding main body is provided with installation hole passing through the annular locking portion, the inner diameter of the opening end of the installation hole is greater than the inner diameter of its hole bottom, the welding rod gradually reduces in diameter from middle part to end part corresponding to one end of the installation hole;

[0006] The welding rod outer wall is provided with abutting step, the locking nut is provided with abutting portion along the radial direction inward corresponding to the abutting step, and the welding rod is provided with abutting step corresponding to the abutting portion, when the locking nut rotates and exits relative to the welding main body in the unlocking direction, the abutting portion and the abutting step are pushed and matched.

[0007] By adopting the technical scheme, the welding rod is inserted into the mounting hole first during installation, the tapered shape at one end of the welding rod is used for positioning through plugging with the mounting hole, and then the locking nut is screwed to a tightened state, the welding rod is inserted into the mounting hole again during the tightening of the locking nut, and the locking force of the locking nut inwardly locks the welding rod firmly in the mounting hole of the annular locking portion, if the welding rod needs to be disassembled subsequently, the locking nut can be unscrewed in reverse, at this time, the locking force of the locking nut on the annular locking portion gradually decreases, when the abutting portion of the locking nut abuts against the abutting step of the welding rod, the locking nut is continuously screwed in the unlocking direction, the abutting step is pushed to drive the welding rod to be pulled out of the mounting hole, so that the purpose that the welding rod is automatically pulled out of the mounting hole synchronously while the locking nut is screwed is achieved, which is different from the way that the welding rod is pulled out of the mounting hole by using external clamping tools in the market, the locking nut and the abutting step are matched with each other, the welding rod can be automatically pushed out while the locking nut is screwed, the pulling-out mode of the welding rod is more efficient, and the welding rod will not be abraded by the clamping tools, so that the service life is longer, and the welding rod has the effects of convenient disassembly and assembly and long service life.

[0008] Further, the welding main body comprises a water-cooled seat and an electrode clamp, the annular locking portion is integrally arranged at the bottom of the electrode clamp, the water-cooled seat is provided with a mounting groove in communication with the mounting hole at the bottom, and the electrode clamp is fixedly arranged in the mounting groove and rotationally matched with the mounting groove.

[0009] Further, the electrode clamp is arranged, so that the disassembly and assembly convenience of the welding rod is further improved.

[0010] Further, the water-cooled seat is provided with an annular groove in the circumferential direction of the mounting hole, and a sealing ring is arranged in the annular groove, and the electrode clamp and the water-cooled seat are sealingly matched through the sealing ring.

[0011] Further, the sealing ring is arranged, so that the water leakage prevention performance between the electrode clamp and the water-cooled seat is improved.

[0012] Further, the inner diameter of the mounting hole gradually decreases from the opening end to the bottom, and the inner cavity of the mounting hole is adaptively arranged in a tapered shape corresponding to the end portion of the welding rod.

[0013] Further, the above technical scheme makes the fitting surface of the welding rod and the mounting hole more closely matched when the end portion of the welding rod is inserted into the mounting hole, so that the insertion firmness of the welding rod in the mounting hole is effectively improved.

[0014] The utility model discloses a further setting for: the welding main part and welding stick jointly form water cooling channel, the water cooling channel includes water inlet channel, heat dissipation channel and water outlet channel, and the water inlet channel and water outlet channel are set up on the welding main part, and the heat dissipation channel is set up on the welding stick along the axial direction, and the water inlet channel is communicated with the water outlet channel through the heat dissipation channel.

[0015] By adopting the above technical scheme, the water flow can flow into the heat dissipation channel from the water inlet channel, absorb the heat on the welding stick and then discharge from the water outlet channel, and the heat on the welding stick is taken away by the continuous water flow, so that the continuous cooling of the welding stick is realized.

[0016] The utility model discloses a further setting for: the welding main part is fixedly connected with the water guide pipe, one end of the water guide pipe is fixedly connected in the water inlet channel, the other end of the water guide pipe is inserted into the heat dissipation channel, and the heat dissipation channel is divided into the water inlet inner chamber and the water outlet outer chamber that are communicated by the water guide pipe, and the water inlet channel flows out from the water outlet channel through the water inlet inner chamber and the water outlet outer chamber.

[0017] By adopting the above technical scheme, the water guide pipe is additionally arranged, so that the flow direction of the water flow in the heat dissipation channel is more orderly, and the continuous cooling of the welding stick is facilitated.

[0018] The utility model discloses a further setting for: the one end of water guide pipe near the water inlet channel is fixed with the welding main part and realizes the fixed connection.

[0019] By adopting the above technical scheme, the water guide pipe can be detachably connected to the welding main part, and the water guide pipe can be conveniently installed and detached.

[0020] The utility model discloses a further setting for: the inner wall of water guide pipe extends radially and forms annular convex part towards the water inlet inner chamber, the annular convex part forms overflow hole that communicates the water inlet inner chamber, and the inner diameter of the overflow hole is less than the inner diameter of the water inlet inner chamber.

[0021] By adopting the above technical scheme, the setting of the annular convex part makes the flow speed of the water flow in the water guide pipe be accelerated when passing the overflow hole position, and the heat dissipation and cooling effect of the heat dissipation channel is improved.

[0022] The utility model discloses a further setting for: the annular convex part is equipped with arc guiding surface between the water guide pipe between the two ends.

[0023] By adopting the above technical scheme, the setting of the arc guiding surface can effectively reduce the impact of the water flow on the two sides of the annular convex part, and then reduce the noise generated when the device operates.

[0024] The welding rod is provided with a plurality of buffer grooves along the length direction of the side wall of the water outlet outer cavity.

[0025] By adopting the technical scheme, the buffer grooves can effectively increase the contact area between the water outlet outer cavity and the cooling water, thereby improving the heat dissipation effect of the welding rod.

[0026] In conclusion, the utility model has the following beneficial effects:

[0027] The electrode clamp is installed on the bottom of the water cooling seat to form a welding main body, the locking nut is threadedly connected to the outer thread of the annular locking part of the electrode clamp, the mounting hole is formed in the welding main body and penetrates through the annular locking part, the inner diameter of the opening end of the mounting hole is larger than that of the hole bottom, the diameter of one end of the welding rod corresponding to the mounting hole gradually decreases from the middle part to the end part, the abutting step is arranged on the outer wall of the welding rod, the abutting part is arranged on the locking nut corresponding to the abutting step and extends inward in the radial direction, the abutting part is arranged on the welding rod corresponding to the abutting step, when the locking nut rotates relative to the welding main body in the unlocking direction and is withdrawn, the abutting part and the abutting step are pushed and matched, the welding rod is inserted into the mounting hole during installation, the tapered shape of one end of the welding rod is used for positioning the insertion and connection of the mounting hole, and then the locking nut is screwed to the tightened state, the welding rod is inserted into the mounting hole again during the tightening process of the locking nut, and the locking force of the locking nut inward is used to lock the welding rod in the mounting hole of the annular locking part, if the welding rod needs to be disassembled subsequently, the locking nut can be unscrewed in the reverse direction, at this time, the locking force of the locking nut on the annular locking part gradually decreases, when the abutting part of the locking nut and the abutting step of the welding rod abut, the locking nut is continuously rotated in the unlocking direction, the abutting step is pushed by the locking nut and then drives the welding rod to be pulled out of the mounting hole, so that the welding rod is automatically pulled out of the mounting hole at the same time when the locking nut is screwed, the abutting step of the locking nut and the abutting part are matched with each other, the automatic pulling out of the welding rod can be realized at the same time when the locking nut is screwed, the pulling out mode of the welding rod is more efficient, the welding rod will not be abraded by the clamping tool, the service life is longer, the welding rod can be conveniently disassembled and assembled, and the service life is prolonged. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 is the structure diagram of the embodiment one of the utility model.

[0029] Figure 2 is the longitudinal section view of the embodiment one of the utility model.

[0030] Figure 3 is the longitudinal section view of the embodiment two of the utility model.

[0031] In the diagram: 1. Welding body; 10. Mounting hole; 11. Water-cooled base; 111. Annular groove; 112. Sealing ring; 113. Mounting groove; 12. Electrode clamp; 121. Annular locking part; 2. Welding rod; 21. Clamping step; 3. Locking nut; 31. Clamping part; 32. Hexagonal screwing part; 4. Water-cooling channel; 41. Water inlet channel; 42. Heat dissipation channel; 421. Water inlet inner cavity; 422. Water outlet outer cavity; 4221. Buffer channel; 43. Water outlet channel; 5. Water guide pipe; 51. Annular protrusion; 52. Arc-shaped guide surface; 53. Flow hole; 6. Welding head. Detailed Implementation

[0032] The present invention will be further described below with reference to the accompanying drawings. Specific Implementation Example 1

[0034] A welding head structure that is easy to assemble and disassemble, such as Figures 1-2 As shown, the assembly includes a welding body 1, a welding rod 2 for mounting a welding head 6, and a clamping structure for fixing the welding rod 2. The clamping assembly includes a locking nut 3 and an annular locking part 121. The annular locking part 121 extends onto the welding body 1, and the welding body 1 has a mounting hole 10 penetrating the annular locking part 121. The inner diameter of the opening end of the mounting hole 10 is larger than the inner diameter of its bottom end. The diameter of the welding rod 2 gradually decreases from the middle to the end corresponding to one end of the mounting hole 10. The outer wall of the welding rod 2 is provided with a pressing step 21, and the locking nut 3 is provided with a pressing part 31 radially inward corresponding to the pressing step 21. The welding rod 2 is provided with a pressing part 31 corresponding to the pressing part 31. There is a clamping step 21. When the locking nut 3 is rotated out relative to the welding body 1 in the unlocking direction, the clamping part 31 and the clamping step 21 push and cooperate. The locking nut 3 includes a hexagonal screwing part 32 integrally provided on the clamping part 31, so that the operator can use a hexagonal wrench to screw the locking nut 3. In this embodiment, the inner diameter of the mounting hole 10 gradually decreases from the opening end to the bottom of the hole, and the inner cavity of the mounting hole 10 is adapted to be tapered to the end of the welding rod 2, so that the contact surface between the two is tighter when the end of the welding rod 2 is inserted into the mounting hole 10, which effectively improves the insertion firmness of the welding rod 2 in the mounting hole 10.

[0035] like Figure 2 As shown, the welding body 1 includes a water-cooled base 11 and an electrode clamp 12. An annular locking part 121 is integrally set at the bottom of the electrode clamp 12. The bottom of the water-cooled base 11 is provided with a mounting groove 113 that communicates with the mounting hole 10. The electrode clamp 12 is fixedly installed in the mounting groove 113 and the two are anti-rotationally engaged. The addition of the electrode clamp 12 further improves the ease of disassembly and assembly of the welding rod 2. The water-cooled base 11 is provided with an annular groove 111 around the mounting hole 10. A sealing ring 112 is provided in the annular groove 111. The electrode clamp 12 and the water-cooled base 11 are sealed together by the sealing ring 112. The addition of the sealing ring 112 improves the water leakage prevention performance between the electrode clamp 12 and the water-cooled base 11.

[0036] As Figures 1-2 shown, the welding body 1 and the welding rod 2 jointly form a water cooling channel 4, which includes a water inlet channel 41, a heat dissipation channel 42 and a water outlet channel 43. The water inlet channel 41 and the water outlet channel 43 are provided on the welding body 1, and the heat dissipation channel 42 is provided on the welding rod 2 in the axial direction. The water inlet channel 41 communicates with the water outlet channel 43 through the heat dissipation channel 42. Water can flow from the water inlet channel 41 into the heat dissipation channel 42, absorb the heat on the welding rod 2, and then be discharged from the water outlet channel 43. The continuous water flow can carry away the heat on the welding rod 2, achieving continuous cooling of the welding rod 2. The welding body 1 is fixedly connected with a water guide pipe 5. One end of the water guide pipe 5 is fixedly connected to the water inlet channel 41. The other end of the water guide pipe 5 extends into the heat dissipation channel 42 and divides the heat dissipation channel 42 into a water inlet inner cavity 421 and a water outlet outer cavity 422 in communication. The water inlet channel 41 flows out of the water outlet channel 43 through the water inlet inner cavity 421 and the water outlet outer cavity 422 in sequence. The addition of the water guide pipe 5 makes the flow direction of the water in the heat dissipation channel 42 more orderly, which is conducive to the continuous cooling of the welding rod 2. The end of the water guide pipe 5 close to the water inlet channel 41 is threadedly connected with the welding body 1 to achieve fixation, so that the water guide pipe 5 can be detachably connected to the welding body 1, facilitating the installation and disassembly of the water guide pipe 5.

[0037] The basic working principle of the utility model is that: the electrode clamp 12 is installed at the bottom of the water cooling seat 11 to form the welding main body 1, the threaded connection locking nut 3 is connected to the annular locking part 121 of the electrode clamp 12, meanwhile, the mounting hole 10 which penetrates the annular locking part 121 is formed on the welding main body 1, the inner diameter of the opening end of the mounting hole 10 is larger than the inner diameter of the hole bottom, the diameter of one end of the welding rod 2 corresponding to the mounting hole 10 gradually decreases from the middle part to the end part, the abutting step 21 is arranged on the outer wall of the welding rod 2, the abutting part 31 corresponding to the abutting step 21 is arranged in the radial direction towards the inside of the locking nut 3, the abutting step 21 corresponding to the abutting part 31 is arranged on the welding rod 2, when the locking nut 3 rotates relative to the welding main body 1 in the unlocking direction and exits, the abutting part 31 and the abutting step 21 are pushed and matched, when installing, the welding rod 2 is inserted into the mounting hole 10, the taper shape of one end of the welding rod 2 is used for positioning the plug-in connection of the mounting hole 10, then the locking nut 3 is screwed to the tightened state, in the process of tightening the locking nut 3, the welding rod 2 is inserted into the mounting hole 10 again, and the locking force of the locking nut 3 towards the inside is used to lock the welding rod 2 in the mounting hole 10 of the annular locking part 121, if the welding rod 2 needs to be disassembled subsequently, the locking nut 3 can be unscrewed in the reverse direction, at this time, the locking force of the locking nut 3 on the annular locking part 121 gradually decreases, when the abutting part 31 of the locking nut 3 abuts against the abutting step 21 of the welding rod 2, the locking nut 3 is continuously screwed in the unlocking direction, the abutting step 21 is pushed and the welding rod 2 is driven to be pulled out from the mounting hole 10, so that the purpose that the welding rod 2 is automatically pulled out from the mounting hole 10 is realized at the same time when the locking nut 3 is screwed, which is different from the mode that the welding rod 2 is pulled out from the mounting hole 10 by using the clamping tool outside in the market, the locking nut 3 and the abutting step 21 of the utility model can realize the automatic pushing out of the welding rod 2 at the same time when the locking nut 3 is screwed, the pulling out mode of the welding rod 2 is more efficient, and the welding rod 2 will not be abraded by the clamping tool, so that the service life is longer, and the welding rod 2 is convenient to disassemble and assemble, the service life is prolonged. Specific embodiment two

[0039] A welding head structure convenient to disassemble and assemble, like Figure 3As shown, the difference between the embodiment and the first specific embodiment is that the inner wall of the water guide pipe 5 extends radially to form annular protrusions 51 towards the water inlet inner cavity 421, and the annular protrusions 51 form flow holes 53 which communicate with the water inlet inner cavity 421, the inner diameter of the flow holes 53 is smaller than the inner diameter of the water inlet inner cavity 421, the annular protrusions 51 are arranged so that the water flow in the water guide pipe 5 is accelerated when passing the flow holes 53, which is beneficial to improve the heat dissipation and cooling effect of the heat dissipation channel 42; the annular protrusions 51 are provided with arc-shaped guide surfaces 52 between the upper and lower ends and the water guide pipe 5, the arc-shaped guide surfaces 52 can effectively reduce the impact of the water flow on both sides of the annular protrusions 51, thereby reducing the noise generated during the operation of the device; the welding rod 2 is provided with a plurality of buffer grooves 4221 along the length direction on the side wall of the water outlet outer cavity 422, the buffer grooves 4221 can effectively increase the contact area between the water outlet outer cavity 422 and the cooling water, thereby improving the heat dissipation effect of the welding rod.

[0040] The embodiment is consistent with the structures of other specific embodiments, and thus will not be described here.

[0041] The above is only the preferred embodiment of the present application, and thus equivalent changes or modifications made according to the structure, features and principles of the present application patent application scope are included in the present application patent application scope.

Claims

1. A welding head structure convenient to disassemble and assemble, comprising a welding body (1), a welding stick (2) for mounting the welding head, and a clamping structure for fixing the welding stick (2), characterized in that: the clamping structure comprises a locking nut (3) and an annular locking portion (121), the annular locking portion (121) is extended on the welding body (1), the welding body (1) is provided with a mounting hole (10) penetrating through the annular locking portion (121), the inner diameter of the opening end of the mounting hole (10) is larger than the inner diameter of the hole bottom, and the welding stick (2) is gradually reduced in diameter from the middle to the end at one end corresponding to the mounting hole (10). The outer wall of the welding stick (2) is provided with an abutting step (21), the locking nut (3) is provided with an abutting portion (31) radially inward corresponding to the abutting step (21), the welding stick (2) is provided with an abutting step (21) corresponding to the abutting portion (31), and when the locking nut (3) is rotated out of the unlocking direction relative to the welding body (1), the abutting portion (31) and the abutting step (21) are pushed and matched. The welding body (1) comprises a water-cooling seat (11) and an electrode clamp (12), the annular locking portion (121) is integrally arranged at the bottom of the electrode clamp (12), the water-cooling seat (11) is provided with a mounting groove (113) communicating with the mounting hole (10) at the bottom, and the electrode clamp (12) is fixedly installed in the mounting groove (113) and rotationally matched with the same.

2. The easily detachable welding head structure according to claim 1, wherein: The water-cooling seat (11) is provided with an annular groove (111) circumferentially along the mounting hole (10), the annular groove (111) is provided with a sealing ring (112), and the electrode clamp (12) and the water-cooling seat (11) are sealingly matched through the sealing ring (112).

3. The easily detachable welding head structure according to claim 2, wherein: The inner diameter of the mounting hole (10) is gradually reduced from the opening end to the hole bottom, and the inner cavity of the mounting hole (10) is adaptively provided in a conical shape corresponding to the end of the welding stick (2).

4. The easily detachable welding head structure of claim 1, wherein: The welding body (1) and the welding stick (2) jointly form a water-cooling channel (4), the water-cooling channel (4) comprises an inlet water channel (41), a heat dissipation channel (42) and an outlet water channel (43), the inlet water channel (41) and the outlet water channel (43) are provided on the welding body (1), the heat dissipation channel (42) is provided on the welding stick (2) in the axial direction, and the inlet water channel (41) is communicated with the outlet water channel (43) through the heat dissipation channel (42).

5. The easily removable welding head structure of claim 1, wherein: The welding body (1) is fixedly connected with a water guide pipe (5), one end of the water guide pipe (5) is fixedly connected to the inlet water channel (41), the other end of the water guide pipe (5) extends into the heat dissipation channel (42) and divides the heat dissipation channel (42) into an inlet water cavity (421) and an outlet water cavity (422) in communication, and the inlet water channel (41) sequentially passes through the inlet water cavity (421) and the outlet water cavity (422) and then flows out from the outlet water channel (43).

6. The easily removable welding head structure of claim 5, wherein: The end of the water guide pipe (5) close to the inlet water channel (41) is threadedly connected with the welding body (1) to realize fixation.

7. The easily removable welding head structure of claim 6, wherein: ​ 8. The easily removable welding head structure of claim 6, wherein: The inner wall of the water guide pipe (5) extends radially to form annular protrusions (51) towards the water inlet inner cavity (421), and flow-through holes (53) are formed between the annular protrusions (51) and communicate with the water inlet inner cavity (421), the inner diameter of the flow-through holes (53) is smaller than the inner diameter of the water inlet inner cavity (421).

9. The easily removable welding head structure of claim 8, wherein: Arc-shaped guide surfaces (52) are arranged between the annular protrusions (51) and the water guide pipe (5) at the upper and lower ends of the annular protrusions (51).

10. The easily assembled and disassembled welding head structure according to any one of claims 6 or 8, characterized in that: The welding rod (2) is provided with a plurality of buffer grooves (4221) along the length direction at the side wall of the water outlet outer cavity (422).

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