CN113001082B

CN113001082B - Welding tool and welding device

Info

Publication number: CN113001082B
Application number: CN202110208006.8A
Authority: CN
Inventors: 庄文溪; 陈楚焕
Original assignee: Shenzhen Guanhua Jewelry Co ltd
Current assignee: Shenzhen Guanhua Jewelry Co ltd
Priority date: 2021-02-25
Filing date: 2021-02-25
Publication date: 2023-01-10
Anticipated expiration: 2041-02-25
Also published as: CN113001082A

Abstract

The application relates to a welding tool and a welding device, which comprise a support and an annular positioning frame, wherein the annular positioning frame is arranged on the support, and a gap for exposing a welding position on a bracelet is formed in the annular positioning frame; the annular positioning frame is further provided with a positioning piece for fixing the bracelet on the annular positioning frame, and the positioning piece is provided with a clamping groove for clamping the bracelet. This application has the effect of fixing a position the bracelet that is in welded condition that can be safer.

Description

Welding tool and welding device

Technical Field

The application relates to the field of welding equipment, in particular to a welding tool and a welding device.

Background

In the jewelry industry, part of bracelets are in a closed circular ring shape, and when the bracelet is manufactured, a long metal strip is required to be bent into a circular ring shape in advance, and then the positions where the two ends of the metal strip are abutted are welded, so that the closed circular bracelet is formed.

In the related art, a relatively common welding mode is that an operator manually takes a bracelet to a welding device, a position to be welded on the bracelet is aligned with a welding gun on the welding device, then the welding gun is started to start welding the bracelet, and the bracelet is manually rotated during welding, so that the welding gun can better weld the bracelet.

In view of the above-mentioned related art, the inventor believes that there is a relatively high risk that an operator positions a bracelet in a welded state directly by hand.

Disclosure of Invention

In order to be able to be safer fix a position the bracelet that is in welded condition, this application provides a welding frock and welding set.

First aspect, the application provides a welding frock adopts following technical scheme:

a welding tool comprises a support and an annular positioning frame, wherein the annular positioning frame is arranged on the support, and a notch used for exposing a welding position on a bracelet is formed in the annular positioning frame; the annular positioning frame is further provided with a positioning piece for fixing the bracelet on the annular positioning frame, and the positioning piece is provided with a clamping groove for clamping the bracelet.

By adopting the technical scheme, when the bracelet needs to be welded, the bracelet can be placed on the annular positioning frame firstly, the bracelet is fixed on the annular positioning frame through the positioning piece and the clamping grooves in the positioning piece, meanwhile, the position, needing to be welded, on the bracelet is exposed in the notch, then the welding position exposed from the notch is welded through the welding device, at the moment, the bracelet does not need to be held manually by an operator, the safety during welding is improved, and compared with the situation that the bracelet is held manually, the bracelet is positioned in such a way, and the bracelet can be positioned more stably.

Preferably, the positioning member comprises a U-shaped member and an adjusting rod, the U-shaped member is arranged on the inner side surface of the annular positioning frame, an opening of the U-shaped member faces the central position of the annular positioning frame, and the clamping grooves are arranged at two ends of the U-shaped member; the adjusting rod penetrates through the annular positioning frame, the adjusting rod is in threaded connection with the annular positioning frame, and the end of the adjusting rod, located at one end of the inner portion of the annular positioning frame, is abutted to the outer side surface of the U-shaped part.

By adopting the technical scheme, the bracelet positioned on the annular positioning ring can be clamped and fixed on the annular positioning basket by the arrangement of the U-shaped piece and the adjusting rod, and the U-shaped piece can achieve the purposes of clamping the bracelet and releasing the bracelet by the adjustment of the adjusting rod, so that the bracelet can be conveniently taken and placed.

Preferably, the location of the locating piece is opposite to the location of the notch.

By adopting the technical scheme, the far end of the bracelet can be well fixed, and the bracelet is not easy to change in position during welding.

Preferably, a positioning card is arranged at the edge of the gap, one end of the positioning card is fixedly connected with the annular positioning frame, and the other end of the positioning card faces the inside of the annular positioning frame; and a positioning groove is formed in the end part of one end of the positioning clamping piece facing the inside of the annular positioning frame and used for clamping the edge of the welding position on the bracelet.

Through adopting above-mentioned technical scheme, the setting of locator card and constant head tank for even also be difficult for taking place the change in position by the welded position atress when being welded in breach department, promoted the fixed strength of adversary's bracelet, help the more stable welding of carrying on of bracelet, and then make the welded precision also obtain the promotion.

Preferably, the annular positioning basket is rotatably connected with the support, and a first driving member for driving the annular positioning basket to rotate is arranged on the support.

Through adopting above-mentioned technical scheme, the setting of first driving piece for annular location frame can carry out autogiration on the support, helps welding position to carry out annular welding, and welding effect is better.

Preferably, the annular positioning frame is further fixedly provided with a support frame, a plurality of sliding inner support blocks are arranged on the support frame in a sliding mode around the center of the annular positioning frame, and after the bracelet is installed on the annular positioning frame, the sliding inner support blocks can support the inner ring of the bracelet in the edge direction along the center of the annular positioning frame; the support frame is also provided with a fourth driving part, and the fourth driving part is used for driving the sliding inner support block to slide on the support frame.

By adopting the technical scheme, the arrangement of the support frame provides a stable installation position for the sliding inner supporting block, and is beneficial to the stable work of the sliding inner supporting block; the bracelet is not easy to deform because only an acting force towards the center of the bracelet but also an acting force towards the direction far away from the center of the bracelet is generated when the bracelet is fixed on the annular positioning frame due to the arrangement of the sliding inner supporting block; the fourth driving piece is arranged to provide sufficient power for the sliding of the sliding block.

Preferably, a soft cushion layer used for abutting against the inner side surface of the bracelet is further fixedly arranged on the surface of one side of the sliding inner supporting block, which is far away from the center of the annular positioning frame.

Through adopting above-mentioned technical scheme, the setting of cushion for the better difficult bracelet that damages of sliding block.

In a second aspect, the present application provides a welding apparatus, which adopts the following technical solution:

a welding device, comprising: the bracelet welding device comprises a welding table, a welding mechanism and a workbench, wherein the welding table and the welding mechanism are both arranged on the workbench, a support is arranged on the welding table, and the welding mechanism is used for welding a bracelet on the welding table.

By adopting the technical scheme, the bracelet can be welded by the welding device immediately after being fixed on the annular positioning frame, and the welding work is finished.

Preferably, the welding station comprises: the mounting plate is movably arranged on the second driving piece and driven by the second driving piece to move on a horizontal plane, and the bracket is arranged on the mounting plate; the second driving piece is movably arranged on the third driving piece, the third driving piece is used for driving the second driving piece and the mounting plate to move on the horizontal plane, and the direction of the third driving piece for driving the second driving piece and the mounting plate to move is perpendicular to the direction of the second driving piece for driving the mounting plate to move.

Through adopting above-mentioned technical scheme, the setting of mounting panel provides the position of installation for the support, and the setting of second driving piece and third driving piece for the adjustment of position can be carried out on the horizontal plane to the mounting panel and the support of installing on the mounting panel, and the bracelet that conveniently is in on the support annular location frame carries out better accurate welding, has promoted the welded precision.

Preferably, the second drive member is identical in construction to the third drive member.

Through adopting above-mentioned technical scheme, make things convenient for second driving piece and third driving piece to carry out the change of part, reduced the cost of design.

Drawings

Fig. 1 is a schematic overall structure diagram of a welding tool in the first embodiment of the present application.

Fig. 2 is a schematic view of an overall structure of a welding device and a welding tool in the first embodiment of the present application.

Fig. 3 is a schematic structural diagram of a bonding stage according to an embodiment of the present application.

Fig. 4 is a schematic bottom view of a bonding stage according to an embodiment of the present disclosure.

Fig. 5 is a schematic view of the overall structure of the welding tool in the second embodiment of the present application.

Fig. 6 is an exploded view of an annular positioning frame in the second embodiment of the present application.

Description of reference numerals: 1. a support; 11. a fixing plate; 111. a U-shaped clamp; 1111. a connecting rod; 12. a connecting plate; 2. an annular positioning frame; 21. a notch; 22. connecting blocks; 3. a first driving member; 4. a positioning member; 41. a U-shaped piece; 411. a card slot; 412. a guide bar; 42. adjusting a rod; 5. positioning the card; 51. positioning a groove; 6. a welding table; 61. mounting a plate; 611. a U-shaped transmission member; 62. a second driving member; 63. a third driving member; 631. a mounting seat; 632. a drive motor; 633. a screw rod; 634. a guide bar; 7. a welding mechanism; 8. a work table; 9. a drive plate; 10. a support frame; 101. a support bar; 102. a support disc; 1021. sliding the inner supporting block; 10211. a soft cushion block; 1022. perforating; 1023. a conical block; 10231. a jack; 10232. and (4) inserting a rod.

Detailed Description

The present application is described in further detail below with reference to figures 1-6.

In a first embodiment, referring to fig. 1, in a first aspect, the application provides a welding tool, which includes a support 1 and an annular positioning frame 2, where the annular positioning frame 2 is disposed on the support 1, and a bracelet to be welded needs to be fixed in the annular positioning frame 2 during welding.

Referring to fig. 1, support 1 includes fixed plate 11 and connecting plate 12, and fixed plate 11 and connecting plate 12 all are the square plate form and are the aluminum alloy material, and fixed plate 11 is vertical to be set up to the lower extreme of fixed plate 11 passes through bolt and connecting plate 12 fixed connection, and connecting plate 12 level sets up.

Referring to fig. 1, the annular positioning frame 2 is annular and made of aluminum alloy, and a notch 21 for exposing a welding position on a bracelet is formed in the annular positioning frame 2; the end, close to the gap 21, of the annular positioning frame 2 is fixedly connected with a connecting block 22 through a bolt, a U-shaped clamping piece 111 is further arranged on one side surface of the upper end of the fixing plate 11, an opening of the U-shaped clamping piece 111 faces the annular positioning frame 2, the connecting block 22 extends into the U-shaped clamping piece 111, gaps exist between the upper side surface and the lower side surface of the inner side of the U-shaped clamping piece 111 and the upper side surface and the lower side surface of the inner side of the U-shaped clamping piece 111, meanwhile, two parallel connecting rods 1111 vertically penetrate through the opening of the U-shaped clamping piece, penetrate through the connecting block 22 and are connected with the connecting block 22 in a sliding mode, a bolt respectively penetrates through the opening of the U-shaped clamping piece 111 in the vertical direction, and abuts against the connecting block 22 after penetrating through the U-shaped clamping piece 111, and at the moment, the purpose of adjusting the vertical position of the annular positioning frame 2 within a certain range can be achieved by adjusting the length of the upper bolt extending into the U-shaped clamping piece and the U-shaped clamping piece.

Referring to fig. 1, a first driving member 3 is further fixed on the surface of the fixing plate 11 on the side away from the U-shaped clamp 111 through a bolt, the first driving member 3 is specifically a motor, and an output shaft of the first driving member 3 passes through the fixing plate 11 and is fixedly connected with the U-shaped clamp 111, so that the first driving member 3 can drive the annular positioning frame 2 to rotate, and the welding device can perform annular welding on a position to be welded on the bracelet.

Referring to fig. 1, a positioning piece 4 for fixing a bracelet on the annular positioning frame 2 is further arranged on the annular positioning frame 2, and the position of the positioning piece 4 is opposite to the position of the notch 21.

Referring to fig. 1, the positioning member 4 comprises a U-shaped member 41 and an adjusting rod 42, the U-shaped member 41 is made of an aluminum alloy, the U-shaped member 41 is arranged on the inner side surface of the annular positioning frame 2, an opening of the U-shaped member 41 faces the center of the annular positioning frame 2, two ends of the opening of the U-shaped member 41 are respectively provided with a clamping groove 411, the clamping grooves 411 are concave in a V shape, when a bracelet is positioned inside the annular positioning frame 2, one end of the bracelet far away from the welding position is clamped in the clamping grooves 411, two parallel guide rods 412 are further welded on the surface of one side of the U-shaped member 41 far away from the center of the annular positioning frame 2, the two guide rods 412 are arranged at intervals, and the guide rods 412 penetrate through the annular positioning frame 2 and are connected with the annular positioning frame 2 in a sliding manner; the adjusting rod 42 is a bolt, the adjusting rod 42 penetrates through the annular positioning frame 2, the adjusting rod 42 is in threaded connection with the annular positioning frame 2, and the end portion, located at one end of the inside of the annular positioning frame 2, of the adjusting rod 42 is abutted to the outer side surface of the U-shaped part 41.

Referring to fig. 1, after the bracelet is placed in the slot 411 of the U-shaped member 41, the adjusting rod 42 can be rotated, so that the adjusting rod 42 pushes the U-shaped member 41 to tightly press the bracelet in the annular location frame 2, so as to perform stable welding on the bracelet.

In addition, referring to fig. 1, in order to better position the bracelet in the annular positioning frame 2, in this embodiment, a positioning clamping piece 5 is further disposed at an edge of the gap 21, the positioning clamping piece 5 is L-shaped and made of an aluminum alloy, one end of the positioning clamping piece 5 is fixedly connected with the annular positioning frame 2 through a bolt, and the other end of the positioning clamping piece extends into the annular positioning frame 2 from the gap 21; the end part of the positioning card 5, which faces the inside of the annular positioning frame 2, is provided with a positioning groove 51, the shape of the positioning groove 51 is the same as that of the clamping groove 411, and the positioning groove 51 is used for clamping the edge of the welding position on the bracelet, so that the bracelet is not easy to change in position.

Referring to fig. 1, at this time, when the bracelet is located in the annular positioning frame 2, two opposite positions on the bracelet are respectively limited by the positioning piece 4 and the positioning clamping piece 5, so that the position of the bracelet is not easy to change, and welding is convenient.

Referring to fig. 1, in the present embodiment, two positioning clamping pieces 5 are further symmetrically arranged at the notch 21 relative to the notch 21, so that the force applied to one end of the bracelet near the notch 21 is more balanced, and the fixing effect on the bracelet is further improved.

referring to fig. 1 and 2, a welding apparatus includes: welding bench 6, welding mechanism 7 and workstation 8, welding bench 6 and welding mechanism 7 all set up on workstation 8, and support 1 sets up on welding bench 6, and welding mechanism 7 is used for welding the bracelet that is in on welding bench 6.

Referring to fig. 1 and 2, the bonding stage 6 includes: the mounting plate 61 is square plate-shaped and made of stainless steel, the mounting plate 61 is movably arranged on the second driving part 62 and is driven by the second driving part 62 to move on a horizontal plane, and the connecting plate 12 in the bracket 1 is fixed on the mounting plate 61 through bolts; the second driving member 62 is movably disposed on the third driving member 63, the third driving member 63 is used for driving the second driving member 62 and the mounting plate 61 to move on a horizontal plane, and the direction in which the third driving member 63 drives the second driving member 62 and the mounting plate 61 to move is perpendicular to the direction in which the second driving member 62 drives the mounting plate 61 to move.

Referring to fig. 2 and 3, the third driving member 63 includes: the mounting seat 631 is U-shaped and made of aluminum alloy, an opening of the mounting seat 631 faces the workbench 8 and is fixedly connected with the workbench 8 through bolts; the driving motor 632 is fixed at one end of the mounting seat 631 through a bolt, and the driving motor 632 is used for driving the screw rod 633 to rotate around the axis of the driving motor 632; the screw rod 633 is horizontally arranged inside the mounting seat 631, two ends of the screw rod 633 are respectively and rotatably connected with two ends of the mounting seat 631 through bearings, and after the driving motor 632 is electrified, the screw rod 633 can rotate around the axis of the screw rod 633; the guide rod 634 is disposed parallel to the screw rod 633, and two ends of the guide rod 634 are welded to two ends of the mounting seat 631 respectively.

Referring to fig. 3 and 4, in the present embodiment, the second actuator 62 and the third actuator 63 have the same structure, and the opening of the mounting seat 631 in the second actuator 62 is oriented in the same direction as the mounting seat 631 in the third actuator 63 and is above the mounting seat 631 in the third actuator 63; the difference lies in that a transmission plate 9 is further fixed on the mounting seat 631 in the second driving element 62 by a bolt, the transmission plate 9 is square and made of stainless steel, the transmission plate 9 is located at the opening of the mounting seat 631 in the second driving element 62, two ends of the transmission plate 9 are respectively fixedly connected with two ends of the mounting seat 631 in the second driving element 62, meanwhile, the transmission plate 9 further passes through the mounting seat 631 in the third driving element 63, the transmission plate 9 is further in threaded connection with the lead screw 633 in the third driving element 63, and the transmission plate 9 is further in sliding connection with the guide rod 634, so that after the lead screw 633 in the third driving element 63 rotates, the lead screw 633 in the third driving element 63 can drive the transmission plate 9 to move along the axial direction of the lead screw 633, and further the second driving element 62 can be integrally carried to move in the horizontal direction.

Referring to fig. 2 and 3, a U-shaped transmission member 611 is further fixed on the surface of the mounting plate 61 on the side close to the workbench 8 by bolts, the U-shaped transmission member 611 opens toward the mounting plate 61, and the U-shaped transmission member 611 passes through the mounting seat 631 in the second driving member 62, while the U-shaped transmission member 611 is further screwed with the lead screw 633 in the second driving member 62, and the U-shaped transmission member 611 is further slidably connected with the guide rod 634, so that the lead screw 633 in the second driving member 62 rotates around its axis to drive the mounting plate 61 to slide on a horizontal plane, and in addition, because the direction in which the third driving member 63 drives the second driving member 62 and the mounting plate 61 moves is perpendicular to the direction in which the second driving member 62 drives the mounting plate 61, the mounting plate 61 can move on a more position on the horizontal plane.

Referring to fig. 2, in the embodiment, the welding mechanism 7 is a welding robot, and after the welding station 6 moves the bracelet in the annular positioning frame 2 to a target position on a horizontal plane by moving the mounting plate 61, the welding mechanism 7 can weld a position to be welded on the bracelet.

In one embodiment of the present application, a welding tool and a welding device have the following working principles: when the bracelet is welded, firstly, the bracelet needs to be placed in the annular positioning frame 2 to be clamped in the clamping groove 411 and the positioning groove 51, then the adjusting rod 42 is rotated to enable the adjusting rod 42 to push the U-shaped piece 41 to move towards one side where the positioning card 5 is located, so that the bracelet is clamped and fixed in the annular positioning frame 2, then the mounting plate 61 is moved by the second driving piece 62 and the third driving piece 63, so that the bracelet on the annular positioning frame 2 can be moved to a target position, and then the welding mechanism 7 welds the position, which needs to be welded, on the bracelet; during welding, the first driving piece 3 needs to be started, so that the annular positioning frame 2 can rotate, the welding mechanism 7 can perform annular welding on a welding position, and the welding effect is improved.

In addition, it should be noted that the welding tool and the welding device in the present application are not limited to only welding bracelets, and the ring-shaped metal members similar to the bracelets can be welded, and only the ring-shaped positioning frame 2 is required to be capable of positioning the welded workpiece and exposing the position to be welded on the workpiece to the notch 21 on the ring-shaped positioning frame 2.

In the second embodiment, referring to fig. 5 and fig. 6, the difference from the first embodiment is that a support frame 10 is further fixed on the annular positioning frame 2 through a bolt, the support frame 10 includes a support rod 101 and a support plate 102, the support rod 101 is in a rectangular parallelepiped shape and is made of an aluminum alloy material, the support rod 101 is arranged along the radial direction of the annular positioning frame 2, one end of the support rod 101 is fixedly connected with the annular positioning frame 2 through a bolt, and the other end of the support rod 101 is fixedly connected with the support plate 102 through a bolt; the supporting disc 102 is disc-shaped and made of aluminum alloy, and the circle center of the supporting disc 102 coincides with the center of the annular positioning frame 2.

Referring to fig. 5 and 6, a plurality of sliding inner supporting blocks 1021 are slidably arranged on the supporting disk 102 around the center of the annular positioning frame 2, in this embodiment, two sliding inner supporting blocks 1021 are arranged in a central symmetry state relative to the center of the supporting disk 102, the sliding inner supporting blocks 1021 are fan-shaped and made of an aluminum alloy material, a sliding groove is formed in the surface of one side of the supporting disk 102 along the diameter direction of the sliding groove, the cross section of the sliding groove is in a dovetail shape, a sliding block matched with the sliding groove in a sliding manner is welded on the surface of one side of the sliding inner supporting block 1021 close to the supporting disk 102, and the sliding inner supporting blocks 1021 can slide along the sliding groove through the sliding block.

Referring to fig. 5 and 6, a through hole 1022 is further formed in the center of the support plate 102, the cross section of the through hole 1022 is circular, a fourth driving member penetrates through the through hole 1022, the fourth driving member is a tapered block 1023, the tapered block 1023 is conical and made of stainless steel, the diameter of the end with the larger diameter of the tapered block 1023 is larger than that of the through hole 1022, a plug hole 10231 is formed in the tapered block 1023 along the direction perpendicular to the axis of the tapered block 1023, after the bracelet is mounted on the annular positioning rack 2, the tapered block 1023 is inserted into the through hole 1022, during the process of inserting the tapered block 1023 into the through hole 1023, the outer side surface of the tapered block 1023 pushes the sliding inner supporting block 1021 to move to a position away from the center of the support plate 102, so that the surface of the sliding inner supporting block 1021 away from the center of the support plate 102 can be abutted against the inner side surface of the bracelet, thereby both inner and outer side surfaces of the bracelet are abutted against the inner supporting block 1023, deformation is not likely to occur, at this time, the through hole 1023 just crosses over the plug hole 1, the plug hole 1021, the plug hole 1022 and the inner supporting block 1023 can be kept away from the inner side of the inner supporting block 1023, and the inner supporting block 1023 can be abutted against the inner side of the plug hole 1023, and the inner supporting block 1023, so that the inner side of the inner supporting block 1023 can be kept away from the plug hole 1023.

In addition, referring to fig. 5 and 6, in order to reduce the damage of the sliding inner supporting block 1021 to the inner side surface of the bracelet, a cushion layer 10211 for abutting against the inner side surface of the bracelet is further adhered to one side surface of the sliding inner supporting block 1021 away from the center of the annular positioning frame 2, and the cushion layer 10211 is made of flannelette.

The above are preferred embodiments of the present application, and the scope of protection of the present application is not limited thereto, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. A welding tool is characterized by comprising a support (1) and an annular positioning frame (2), wherein the annular positioning frame (2) is arranged on the support (1), and a gap (21) used for exposing a welding position on a bracelet is formed in the annular positioning frame (2); the annular positioning frame (2) is further provided with a positioning piece (4) used for fixing the bracelet on the annular positioning frame (2), and the positioning piece (4) is provided with a clamping groove (411) used for clamping the bracelet;

the annular positioning frame (2) is further provided with a positioning piece (4) used for fixing the bracelet on the annular positioning frame (2), and the positioning piece (4) is provided with a clamping groove (411) used for clamping the bracelet;

the positioning piece (4) comprises a U-shaped piece (41) and an adjusting rod (42), the U-shaped piece (41) is arranged on the inner side surface of the annular positioning frame (2), the opening of the U-shaped piece (41) faces to the central position of the annular positioning frame (2), and the clamping grooves (411) are formed in two ends of the U-shaped piece (41); the adjusting rod (42) penetrates through the annular positioning frame (2), the adjusting rod (42) is in threaded connection with the annular positioning frame (2), and the end part of the adjusting rod (42) at one end inside the annular positioning frame (2) is abutted against the outer side surface of the U-shaped part (41);

the position of the positioning piece (4) is opposite to the position of the notch (21);

a positioning clamp piece (5) is arranged at the edge of the gap (21), one end of the positioning clamp piece (5) is fixedly connected with the annular positioning frame (2), and the other end of the positioning clamp piece faces the inside of the annular positioning frame (2); a positioning groove (51) is formed in the end portion, facing the interior of the annular positioning frame (2), of the positioning clamping piece (5), and the positioning groove (51) is used for clamping the edge of the welding position on the bracelet.

2. The welding tool according to claim 1, characterized in that a support frame (10) is fixedly arranged on the annular positioning frame (2), a plurality of sliding inner supporting blocks (1021) are slidably arranged on the support frame (10) around the center of the annular positioning frame (2), and after the bracelet is mounted on the annular positioning frame (2), the sliding inner supporting blocks (1021) can support the inner ring of the bracelet in the edge direction along the center of the annular positioning frame (2); the supporting frame (10) is also provided with a fourth driving piece, and the fourth driving piece is used for driving the sliding inner supporting block (1021) to slide on the supporting frame (10).

3. The welding tool according to claim 2, characterized in that a cushion layer (10211) for abutting against the inner side surface of the bracelet is further fixedly arranged on one side surface of the sliding inner supporting block (1021) far away from the center of the annular positioning frame (2).

4. A welding device, based on the welding frock of claim 1, characterized by includes: welding bench (6), welding mechanism (7) and workstation (8), welding bench (6) all set up on workstation (8) with welding mechanism (7), support (1) sets up on welding bench (6), and welding mechanism (7) are used for welding the bracelet that is in on welding bench (6).

5. Welding device according to claim 4, characterized in that the welding station (6) comprises: the bracket comprises a mounting plate (61), a second driving part (62) and a third driving part (63), wherein the mounting plate (61) is movably arranged on the second driving part (62) and is driven by the second driving part (62) to move on a horizontal plane, and the bracket (1) is arranged on the mounting plate (61); the second driving part (62) is movably arranged on a third driving part (63), the third driving part (63) is used for driving the second driving part (62) and the mounting plate (61) to move on a horizontal plane, and the direction of the third driving part (63) for driving the second driving part (62) and the mounting plate (61) to move is perpendicular to the direction of the second driving part (62) for driving the mounting plate (61) to move.

6. Welding device according to claim 5, characterized in that the second drive member (62) is of identical construction to the third drive member (63).