CN112975106B - Weld assembly and welding machine - Google Patents

Abstract

The invention discloses a welding part and discloses a welding machine with the welding part, wherein the welding part comprises a welding head, an amplitude modulator, a transducer, a sleeve, a shell and an adjusting part; the sleeve is sleeved on the amplitude modulator and fixedly connected with the amplitude modulator, and the peripheral surface of the sleeve is provided with a positioning groove; the shell is sleeved outside the sleeve and can rotate relative to the sleeve, and is provided with a first sliding chute which is arranged along the axial direction of the sleeve; the adjusting piece penetrates through the first sliding groove and is clamped with the positioning groove, and the adjusting piece is in sliding fit with the first sliding groove; the welding head, the amplitude modulator and the energy converter are fixedly connected in sequence. When the relative position between the welding head and the welding seat in the welding machine needs to be adjusted, the adjusting piece slides in the first sliding groove to drive the sleeve which is clamped with the adjusting piece to move along the axial direction of the sleeve, and the welding head is driven to move along the axial direction of the sleeve, the relative position between the welding head and the welding seat is adjusted, the whole welding part does not need to be disassembled and assembled again, and the machining efficiency is improved.

Description

Weld assembly and welding machine

Technical Field

The invention relates to the field of welding equipment, in particular to a welding part and a welding machine.

Background

The welding head of the ultrasonic welding machine has the condition of different lengths due to the difference of structural design materials, the normal work of the welding machine needs to ensure the one-to-one correspondence of the positions of the welding head and the welding seat, however, the machining range of the welding machine is limited, new equipment needs to be purchased to meet the production requirement for realizing the welding of partial workpieces, and meanwhile, the new equipment needs to be disassembled and assembled again, so that the working efficiency can be reduced due to the time consumption in the disassembling and assembling process, and the production cost is greatly increased.

Disclosure of Invention

The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides a welding part which can directly adjust the relative position of a welding head and a welding seat.

The invention also provides a welding machine with the welding part.

A weld assembly according to an embodiment of the first aspect of the invention comprises a welding head, a modulator, a transducer, a sleeve, a housing, and an adjuster; the sleeve is sleeved on the amplitude modulator and fixedly connected with the amplitude modulator, and a positioning groove is formed in the peripheral surface of the sleeve; the shell is sleeved outside the sleeve and can rotate relative to the sleeve, and is provided with a first sliding groove which is arranged along the axial direction of the sleeve; the adjusting piece penetrates through the first sliding groove and is clamped with the positioning groove, and the adjusting piece is in sliding fit with the first sliding groove; the welding head, the amplitude modulator and the energy converter are fixedly connected in sequence.

The welding piece provided by the embodiment of the invention at least has the following beneficial effects: when the relative position between the welding head and the welding seat in the welding machine needs to be adjusted, the adjusting piece slides in the first sliding groove to drive the sleeve which is clamped with the adjusting piece to move along the axial direction of the sleeve, and the welding head is driven to move along the axial direction of the sleeve, the relative position between the welding head and the welding seat is adjusted, the whole welding part does not need to be disassembled and assembled again, and the machining efficiency is improved.

According to some embodiments of the invention, the positioning groove is circumferentially provided around an outer circumferential surface of the sleeve in a circumferential direction of the sleeve. When the sleeve rotates, the adjusting block can directly slide in the annular positioning groove, and interference is avoided.

According to some embodiments of the present invention, the welding part further includes a sliding block, the adjusting part is movably inserted into the sliding block, the adjusting part is capable of moving on the sliding block along an axial direction of the adjusting part, and the sliding block is slidably connected to the outer surface of the housing, so that the sliding block drives the adjusting part to slide in the first sliding groove.

According to some embodiments of the invention, the outer surface of the housing is provided with a second runner, the slider being slidably disposed within the second runner. Through the sliding fit of the sliding block and the second sliding groove, the sliding block can be embedded into the shell and can slide in the second sliding groove, and the second sliding groove can provide position constraint for the stroke of the sliding block.

According to some embodiments of the invention, the second runner is provided with guide rails on both sides thereof perpendicular to a direction of a moving path of the slider, and the slider is provided with guide grooves engaged with the guide rails. Through the cooperation of guide rail and guide slot, can further retrain the stability of sliding of slider in the second spout.

According to some embodiments of the invention, the outer surface of the housing is provided with a first mounting hole, the slider is provided with a first waist-shaped hole, and the first mounting hole and the first waist-shaped hole are correspondingly arranged. When the sleeve is moved to the proper position, so that the relative position of the welding head and the welding seat is in the proper position, the position of the sleeve needs to be fixed, and the slider can be fixed at the position by inserting a fastener (not shown in the figure) between the first mounting hole and the first kidney-shaped hole, so that the position of the adjusting piece is fixed, and the position of the sleeve and the position of the welding head are fixed.

According to some embodiments of the invention, at least a portion of a surface of the adjusting member is provided with a thread, the slider is provided with a first threaded hole, and the adjusting member is inserted into the first threaded hole such that the thread engages an inner surface of the first threaded hole. The adjusting piece and the first screw hole are in transmission fit through meshing, circumferential rotation of the adjusting piece can be converted into axial movement, and the effect that the adjusting piece moves axially on the sliding block along the adjusting piece is achieved.

According to some embodiments of the invention, the weldment further comprises an adjustment block, a mounting seat and an adjustment rod, the adjustment block being disposed on the outer circumferential surface of the sleeve; the number of the mounting seats is two, the mounting seats are arranged on the shell, and the two mounting seats are respectively arranged on two sides of the adjusting block along the radial direction of the sleeve; the adjusting rod is inserted in the mounting seat and can extend and retract on the mounting seat along the radial direction of the sleeve; the adjusting rods on two sides of the adjusting block are respectively abutted against the adjusting block along the radial direction of the sleeve. The adjusting blocks are clamped through the adjusting rods on the two sides, so that the adjusting blocks cannot move, the sleeve can be restrained from moving in the circumferential direction, the sleeve cannot rotate in the circumferential direction, the position of the welding head after adjustment can be kept, and the machining effect is improved.

According to some embodiments of the invention, the adjusting rod is a threaded rod, and the adjusting rod is inserted into the mounting seat and meshed with the mounting seat. The adjusting rods on the two sides of the adjusting block are abutted to the adjusting block, and the adjusting block is clamped tightly to restrain the sleeve to move in the circumferential direction.

According to some embodiments of the invention, the outer surface of the amplitude modulator is provided with a bulge, the sleeve comprises a cylinder body and a pressing block, the cylinder body penetrates through and is sleeved on the amplitude modulator, and the inner wall surface of the cylinder body is provided with a first limiting part; the compression block is sleeved on the amplitude modulator, the compression block is provided with a second limiting portion, the second limiting portion is embedded in the barrel and abuts against the two ends of the protrusion along the axial direction of the barrel, and the compression block is fixedly connected with the barrel. The first limiting part is matched with the second limiting part to fix the amplitude modulator in the sleeve, so that the relative position between the sleeve and the amplitude modulator is ensured, the integral installation efficiency of a welding part can be greatly improved, repeated positioning is not needed, and the sleeve and the amplitude modulator cannot shift in the axial direction in the actual use process.

According to some embodiments of the invention, a second mounting hole is formed in one side of the compression block, which is far away from the second limiting portion, the sleeve further comprises a fixing piece, the fixing piece is provided with a second waist-shaped hole, a screw passes through between the second mounting hole and the second waist-shaped hole, so that the compression block and the fixing piece are fixedly connected, and the adjusting block is fixed to the fixing piece. The fixing piece is detachably installed on the pressing piece through the screw, the fixed positions of the sleeve and the fixing piece can be adjusted at any time, and after the sleeve rotates, the fixing piece is installed again, so that the adjusting rods on the two sides of the adjusting block can be perpendicular to the surface of the adjusting block, and the pressing effect is improved.

A welder, according to a second aspect embodiment of the present invention, includes:

a weldment according to an embodiment of the first aspect of the invention;

the welding part is connected with the machine table in a sliding mode so that the welding part can move in the vertical direction.

The welding machine provided by the embodiment of the invention at least has the following beneficial effects: when the relative position between the welding head and the welding seat in the welding machine needs to be adjusted, the adjusting piece slides in the first sliding groove to drive the sleeve which is clamped with the adjusting piece to move along the axial direction of the sleeve, and the welding head is driven to move along the axial direction of the sleeve, the relative position between the welding head and the welding seat is adjusted, the whole welding part does not need to be disassembled and assembled again, and the machining efficiency is improved.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The invention is further described with reference to the following figures and examples, in which:

FIG. 1 is a schematic view of a weldment according to an embodiment of the present invention;

FIG. 2 is an enlarged view of portion A of FIG. 1;

FIG. 3 is an enlarged view of section B of FIG. 1;

FIG. 4 is a cross-sectional view taken along the line C-C of FIG. 1;

fig. 5 is a cross-sectional view taken along the direction D-D of fig. 1.

10. A welding part; 100. a welding head; 200. an amplitude modulator; 210. a protrusion; 300. a transducer; 400. a sleeve; 410. positioning a groove; 420. an adjusting block; 430. a barrel; 431. a first limiting part; 440. a compression block; 441. a second limiting part; 442. a second mounting hole; 450. a fixing member; 452. a second waist-shaped hole; 500. a housing; 510. a first chute; 520. a second chute; 521. a guide rail; 530. a first mounting hole; 540. a mounting seat; 541. adjusting a rod; 600. an adjustment member; 700. a slider; 710. a first kidney-shaped hole.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, the meaning of a plurality of means is one or more, the meaning of a plurality of means is two or more, and larger, smaller, larger, etc. are understood as excluding the number, and larger, smaller, inner, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.

Referring to fig. 1 to 5, a welding machine according to an embodiment of the present invention includes a welding member 10 and a machine table, the welding member 10 and the machine table being slidably connected to enable the welding member 10 to move in a vertical direction and weld a workpiece, wherein the welding member 10 includes a welding head 100, an amplitude modulator 200, a transducer 300, a sleeve 400, a housing 500, and an adjusting member 600; the sleeve 400 is sleeved on the amplitude modulator 200 and fixedly connected with the amplitude modulator 200, and a positioning groove 410 is arranged on the outer peripheral surface of the sleeve 400; the shell 500 is sleeved outside the sleeve 400 and can rotate relative to the sleeve 400, the shell 500 is provided with a first sliding chute 510, and the first sliding chute 510 is arranged along the axial direction of the sleeve 400; the adjusting piece 600 penetrates through the first sliding groove 510 and is clamped with the positioning groove 410, and the adjusting piece 600 is in sliding fit with the first sliding groove 510; wherein, the welding head 100, the amplitude modulator 200 and the transducer 300 are fixedly connected in sequence.

During the assembly process, the adjusting piece 600 is directly inserted into the positioning groove 410 and clamped with the positioning groove 410, so that the relative position of the shell 500 and the sleeve 400 can be limited, the position of the amplitude modulator 200 is fixed, when the relative position between the welding head 100 and the welding seat in the welding machine needs to be adjusted, the adjusting piece 600 slides in the first sliding groove 510, the sleeve 400 which is clamped with the adjusting piece 600 is driven to move along the axial direction of the sleeve 400, the welding head 100 is driven to move along the axial direction of the sleeve 400, the relative position between the welding head 100 and the welding seat is adjusted, the whole welding piece 10 does not need to be disassembled and reassembled, and the machining efficiency is improved.

Specifically, in the above-mentioned embodiment, the welding head 100, the amplitude modulator 200 and the transducer 300 are sequentially and fixedly connected to form an integrated structure, and then the sleeve 400 is directly sleeved and fixed on the amplitude modulator 200 to fix the sleeve 400 and the integrated structure, when the sleeve 400 rotates (the sleeve 400 and the housing 500 rotate relatively), the integrated structure can rotate along with the sleeve 400, and when the sleeve 400 moves in the housing 500 along the axial direction of the sleeve 400, the integrated structure can move along with the sleeve 400, so as to achieve the effect of adjusting the relative position of the welding head 100 and the welding seat.

It will be appreciated that the positioning grooves 410 are circumferentially disposed around the outer circumferential surface of the sleeve 400 along the circumferential direction of the sleeve 400.

Specifically, in some embodiments, the positioning slot 410 forms a ring around the outer circumference of the sleeve 400, the rings are connected end to form a closed loop, and when the sleeve 400 rotates, the adjusting block can directly slide in the ring-shaped positioning slot 410 to avoid interference;

in other embodiments, the positioning groove 410 continuously extends around the outer circumference of the sleeve 400 and forms an annular positioning groove 410 at one end, and when the sleeve 400 rotates, the adjusting block can directly slide in the annular positioning groove 410 to avoid interference;

in other embodiments, the positioning groove 410 is provided in plural, and the plural positioning grooves 410 are spaced along the circumferential direction of the sleeve 400, so that the sleeve 400 can be positioned after the sleeve 400 rotates by inserting the adjusting block into different positioning grooves 410;

in other embodiments, in which the positioning groove 410 extends around the outer circumferential surface of the sleeve 400 in the circumferential direction of the sleeve 400 and forms a spiral shape, the adjustment block may directly slide in the annular positioning groove 410 when the sleeve 400 is rotated, thereby avoiding interference, it should be mentioned that in this embodiment, when the sleeve 400 is rotated to adjust the angle of the welding head 100, the relative positions of the welding head 100 and the welding holder in the axial direction of the sleeve 400 may also be changed, and the relative positions of the welding head 100 and the welding holder may be readjusted by axially sliding the sleeve 400 along the sleeve 400 within the housing 500.

In some embodiments, the welding member 10 further includes a sliding block 700, the adjusting member 600 is movably inserted into the sliding block 700, the adjusting member 600 can move on the sliding block 700 along the axial direction of the adjusting member 600, and the sliding block 700 is slidably connected to the outer surface of the casing 500, so that the sliding block 700 drives the adjusting member 600 to slide in the first sliding slot 510. In specific use, by sliding the sliding block 700, the adjusting member 600 can slide to different positions in the first sliding groove 510, and the sleeve 400 can move to different positions, and when in specific adjustment, the position of the welding head 100 can be adjusted in the following two ways:

1. moving the adjusting piece 600 on the slider 700 along the axial direction of the adjusting piece 600 and making the end of the adjusting piece 600 separate from the positioning groove 410, pulling the welding head 100 and adjusting the position of the welding head 100, moving the slider 700 after the welding head 100 moves to a proper position, making the adjusting piece 600 correspond to the positioning groove 410, making the adjusting piece 600 move on the slider 700 along the axial direction of the adjusting piece 600 and making the end of the adjusting piece 600 embedded into the positioning groove 410 to complete the adjustment of the welding head 100;

2. the slider 700 is directly moved to slide the adjuster 600 in the first slide groove 510 in the axial direction of the sleeve 400, and the sleeve 400 is pulled by the adjuster 600 to move in the axial direction of the sleeve 400 and move the welding head 100 to a proper position.

It is understood that the outer surface of the housing 500 is provided with the second sliding groove 520, and the slider 700 is slidably disposed in the second sliding groove 520. Through the sliding fit between the slider 700 and the second sliding groove 520, the slider 700 can be inserted into the housing 500 and slide in the second sliding groove 520, and the second sliding groove 520 can provide a position constraint for the stroke of the slider 700.

In some embodiments, the guide rails 521 are disposed at both sides of the second slide groove 520 perpendicular to the direction of the moving path of the slider 700, and the slider 700 is provided with guide grooves engaged with the guide rails 521. The sliding stability of the slider 700 in the second sliding groove 520 can be further restricted by the cooperation of the guide rail 521 and the guide groove.

In some embodiments, the outer surface of the housing 500 is provided with a first mounting hole 530, the slider 700 is provided with a first kidney-shaped hole 710, and the first mounting hole 530 and the first kidney-shaped hole 710 are correspondingly arranged.

When the sleeve 400 is moved into position to properly position the horn 100 relative to the anvil, the sleeve 400 is fixed in position by inserting a fastener (not shown) between the first mounting hole 530 and the first kidney hole 710 to secure the slider 700 in that position and thus the adjuster 600 to secure the position of the sleeve 400 and the horn 100.

In some embodiments, at least a portion of the surface of the adjusting member 600 is provided with threads, the slider 700 is provided with a first threaded hole, and the adjusting member 600 is inserted into the first threaded hole such that the threads engage the inner surface of the first threaded hole. The adjusting member 600 is engaged with the first screw hole to realize transmission fit, so that the circumferential rotation of the adjusting member 600 is converted into axial movement, and the adjusting member 600 moves on the slider 700 along the axial direction of the adjusting member 600.

The sleeve 400 and the housing 500 can rotate relatively to adjust the angle of the welding head 100, so as to ensure that the long sides of the welding head 100 and the welding seats are arranged correspondingly, and ensure the welding quality, for this reason, in some embodiments, the welding part 10 further includes an adjusting block 420, a mounting seat 540 and an adjusting rod 541, and the adjusting block 420 is arranged on the outer circumferential surface of the sleeve 400; two mounting seats 540 are arranged, the mounting seats 540 are arranged on the shell 500, and the two mounting seats 540 are respectively arranged on two sides of the adjusting block 420 along the radial direction of the sleeve 400; the adjusting rod 541 is inserted into the mounting seat 540 and can extend and retract on the mounting seat 540 along the radial direction of the sleeve 400; the adjusting rods 541 on both sides of the adjusting block 420 respectively abut against the adjusting block 420 along the radial direction of the sleeve 400.

After the angle of the welding head 100 is adjusted by rotating, the adjusting blocks 420 are clamped by the adjusting rods 541 on the two sides, so that the adjusting blocks 420 cannot move, the sleeve 400 can be restrained from moving in the circumferential direction, the sleeve 400 cannot rotate in the circumferential direction, the welding head 100 after adjustment can be ensured to keep the position, and the processing effect is improved.

In some embodiments, the adjusting rod 541 is a screw rod, and the adjusting rod 541 is inserted into the mounting seat 540 and engaged with the mounting seat 540. Specifically, the mounting seat 540 should be provided with a second screw hole, the screw rod is inserted into the second screw hole, and the screw rod can be far away from or close to the adjusting block 420 by rotating in the second screw hole, and in the radial direction of the sleeve 400, the adjusting rods on both sides of the adjusting block 420 are all abutted against the adjusting block 420, and the adjusting block 420 is clamped, so as to restrict the sleeve 400 from moving in the circumferential direction.

In some embodiments, the protrusion 210 is disposed on the outer surface of the amplitude modulator 200, the sleeve 400 includes a cylinder 430 and a pressing block 440, the cylinder 430 is disposed through and sleeved on the amplitude modulator 200, and the inner wall surface of the cylinder 430 is provided with a first limiting portion 431; the amplitude modulator 200 is located to the cover of compact heap 440, and compact heap 440 is provided with spacing portion 441 of second, and spacing portion 441 of second inlays and locates in the barrel 430, along the axial of barrel 430, and first spacing portion 431 and spacing portion 441 of second offset with the both ends of arch 210 respectively, and compact heap 440 and barrel 430 fixed connection. When the amplitude modulator 200 is embedded in the sleeve 400, the protrusion 210 is located between the first limiting portion 431 and the second limiting portion 441, and the first limiting portion 431 and the second limiting portion 441 are matched to fix the amplitude modulator 200 in the sleeve 400, so that the relative position between the sleeve 400 and the amplitude modulator 200 is ensured, the overall installation efficiency of the welding part 10 can be greatly improved, multiple positioning is not needed, and the sleeve 400 and the amplitude modulator 200 cannot be axially shifted in the actual use process.

In some embodiments, a second mounting hole 442 is formed in a side of the pressing block 440 away from the second position-limiting portion 441, the sleeve 400 further includes a fixing member 450, the fixing member 450 is provided with a second waist-shaped hole 452, a screw passes through between the second mounting hole 442 and the second waist-shaped hole 452, so that the pressing block 440 and the fixing member 450 are fixedly connected, and the adjusting block 420 is fixed to the fixing member 450. The fixing member 450 is detachably mounted on the pressing member by a screw, so that the fixing positions of the sleeve 400 and the fixing member 450 can be adjusted at any time, and after the sleeve 400 is rotated, the fixing member 450 is mounted again, so that the adjusting rods 541 on the two sides of the adjusting block 420 can be perpendicular to the surface of the adjusting block 420, and the pressing effect is improved.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.

Claims (11)

1. The utility model provides a welding, includes bonding tool, amplitude modulator and the transducer of fixed connection in proper order, its characterized in that, the welding still includes:

the sleeve is sleeved on the amplitude modulator and fixedly connected with the amplitude modulator, and a positioning groove is formed in the peripheral surface of the sleeve;

the shell is sleeved outside the sleeve and can rotate relative to the sleeve, and is provided with a first sliding groove which is arranged along the axial direction of the sleeve;

the adjusting piece penetrates through the first sliding groove and is clamped with the positioning groove, and the adjusting piece is in sliding fit with the first sliding groove;

the adjusting block is arranged on the outer peripheral surface of the sleeve;

the two mounting seats are arranged on the shell, and are respectively arranged on two sides of the adjusting block along the radial direction of the sleeve;

the adjusting rod is inserted on the mounting seat and can extend and retract on the mounting seat along the radial direction of the sleeve;

the adjusting rods on two sides of the adjusting block are respectively abutted against the adjusting block along the radial direction of the sleeve.

2. The weldment of claim 1, wherein the locating slots are circumferentially disposed around the outer circumferential surface of the sleeve in the circumferential direction of the sleeve.

3. The weldment of claim 1, further comprising a slider, wherein the adjustment element is movably inserted into the slider, wherein the adjustment element is capable of moving on the slider in an axial direction of the adjustment element, and wherein the slider is slidably coupled to the outer surface of the housing such that the slider drives the adjustment element to slide within the first sliding channel.

4. The weldment of claim 3, wherein the outer surface of the housing is provided with a second runner, the slider being slidably disposed within the second runner.

5. The weldment of claim 4, wherein, perpendicular to the direction of the path of movement of the slide, guide rails are provided on both sides of the second runner, and the slide is provided with guide grooves that cooperate with the guide rails.

6. The weldment of any one of claims 3 to 5, wherein the outer surface of the housing is provided with a first mounting hole, and the slider is provided with a first kidney-shaped hole, the first mounting hole and the first kidney-shaped hole being correspondingly arranged.

7. The weldment of any one of claims 3 to 5, wherein at least a portion of the surfaces of the adjustment members are provided with threads, and wherein the slide blocks are provided with first threaded holes, and wherein the adjustment members are inserted through the first threaded holes so that the threads engage the inner surfaces of the first threaded holes.

8. The weldment of claim 1, wherein the adjustment rods are threaded rods that are inserted into and engage the mounting blocks.

9. The weldment of claim 1, wherein the outer surface of the amplitude modulator is provided with projections, the sleeve comprising:

the barrel penetrates through the amplitude modulator and is sleeved with the amplitude modulator, and a first limiting part is arranged on the inner wall surface of the barrel;

the compression block is sleeved on the amplitude modulator, the compression block is provided with a second limiting portion, the second limiting portion is embedded in the barrel body and along the axial direction of the barrel body, the first limiting portion and the second limiting portion respectively abut against the two ends of the protrusion, and the compression block is fixedly connected with the barrel body.

10. The weldment of claim 9, wherein a second mounting hole is formed in a side of the pressing block, which is away from the second limiting portion, the sleeve further comprises a fixing member, the fixing member is provided with a second waist-shaped hole, a screw is inserted between the second mounting hole and the second waist-shaped hole, so that the pressing block and the fixing member are fixedly connected, and the adjusting block is fixed to the fixing member.

11. Welding machine, its characterized in that includes:

the weldment of any one of claims 1 to 10;

the welding part is connected with the machine table in a sliding mode so that the welding part can move in the vertical direction.

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