Two-point synchronous welding device for parts

Abstract

The double-point synchronous welding device comprises a bearing support, the lower end of a rotating support is hinged to the bearing support, a rotating support driving assembly is fixedly arranged on one side of the bearing support, an insulating mold base is fixedly arranged on the other side of the bearing support, and an insulating mounting plate is fixedly arranged at the upper end of the rotating support. The transformer is fixedly arranged on the upper surface of the insulating mounting plate, the fixed parts of the positive pole telescopic piece and the negative pole telescopic piece are fixedly arranged on the insulating mounting plate, the positive pole welding head is fixedly arranged at the output end of the positive pole telescopic piece and electrically connected with the transformer, and the negative pole welding head is fixedly arranged on the negative pole welding head; and the positive electrode welding head and the negative electrode welding head are respectively matched with welding holes in a welding part. Under the action of the positive electrode telescopic piece and the negative electrode telescopic piece, one positive electrode welding head and one negative electrode welding head are in contact with a welding part at the same time and are welded, so that two welding positions can be welded at the same time, and the welding efficiency is effectively improved.

Description

Technical Field

[0001] The invention relates to the field of welding equipment, in particular to a dual-point synchronous welding device for parts. Background Art

[0002] Some thin-walled parts on cars need to be connected by bolts. When tightening nuts on bolts, the bolts may rotate together. Since it is not convenient to use tools inside thin-walled parts, bolts need to be welded on thin-walled parts to prevent them from rotating on thin-walled parts. The welding methods in the prior art are all performed by robots one by one. When there are a large number of bolts to be welded on thin-walled parts, the single welding method is still easy to reduce the welding efficiency. Summary of the invention

[0003] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a dual-point synchronous welding device for parts.

[0004] The objective of the present invention is achieved through the following technical solutions:

[0005] A dual-point synchronous welding device for parts, comprising a bearing bracket, a rotating bracket, an insulating mounting plate, an insulating mold seat, a transformer, a positive telescopic member, a negative telescopic member, a positive welding head, a negative welding head and a rotating frame driving assembly, wherein the lower end of the rotating bracket is hingedly arranged on the bearing bracket, the rotating frame driving assembly is fixedly arranged on one side of the bearing bracket and the output end is hinged to the upper end of the rotating bracket, the insulating mold seat is fixedly arranged on the other side of the bearing bracket and is used to install welding parts, the insulating mounting plate is fixedly arranged on the upper end of the rotating bracket, the transformer is fixedly arranged on the upper surface of the insulating mounting plate, the fixing parts of the positive telescopic member and the negative telescopic member are fixedly arranged on the lower surface of the insulating mounting plate, and the positive telescopic member and the negative telescopic member are arranged in a one-to-one correspondence, the positive welding head is fixedly arranged on the output end of the positive telescopic member and is electrically connected to the transformer, the negative welding head is fixedly arranged on the negative welding head, and the positive welding head and the negative welding head are respectively matched with the welding holes on the welding parts.

[0006] Furthermore, the rotating frame driving assembly includes a rotating drive member, a rotating shaft, a swing rod, an auxiliary connecting rod, a limiting sleeve, an adjusting rod and a hinged end. The rotating shaft is rotatably arranged on the supporting bracket, the rotating drive member is fixedly arranged on the supporting bracket and the output end is transmission-connected to one end of the rotating shaft, one end of the swing rod is fixed on the rotating shaft, the other end of the swing rod is hinged to one end of the auxiliary connecting rod, the limiting sleeve is fixedly arranged on the other end of the auxiliary connecting rod, the adjusting rod is slidably arranged in the limiting sleeve, the adjusting rod is fixedly connected to one end of the hinged end, the other end of the hinged end is hingedly arranged on the upper end of the rotating bracket, and the end of the adjusting rod is provided with an anti-slip nut threadedly matched with the limiting sleeve.

[0007] Furthermore, a buffer cavity is arranged in the limiting sleeve, a buffer ring cooperating with the buffer cavity is arranged in the buffer cavity, and the buffer ring is sleeved on the adjusting rod.

[0008] Furthermore, a reduction wheel is fixedly provided on the other end of the rotating shaft, and a positive deceleration contact block and a reverse deceleration contact block are provided on the reduction wheel, and the positive deceleration contact block and the reverse deceleration contact block are respectively provided on both sides of the reduction wheel, and the positive deceleration contact block and the reverse deceleration contact block are both cooperated with a contact switch, and the contact switch is fixedly provided on the supporting bracket.

[0009] Furthermore, a locking mounting plate is fixedly provided on the upper end of the rotating bracket, one end of the locking mounting plate is connected to the fixed part of the locking cylinder, the output part of the locking cylinder is hinged to the middle part of the locking block, one end of the locking block is hinged to the buffer block, the buffer block is fixedly provided on the other end of the locking mounting plate, the buffer block cooperates with one side surface of the limit plate, the other end of the locking block cooperates with the other side surface of the limit plate, and the limit plate is fixedly provided on the upper end of the supporting bracket.

[0010] Furthermore, a roller is rotatably provided on the locking block, and a roller cooperating with the limiting plate is provided on the roller.

[0011] Furthermore, a detection bracket is provided on the locking mounting plate, and a first detection sensor and a second detection sensor are provided on the detection bracket, and both the first detection sensor and the second detection sensor cooperate with a detection terminal fixedly provided on the locking block.

[0012] Furthermore, a positive copper plate and a negative copper plate are fixedly mounted on the insulating mounting plate, the positive copper plate is electrically connected to the transformer, the positive copper plate is electrically connected to the positive welding head via a positive copper busbar, and the negative copper plate is electrically connected to the negative welding head via a negative copper busbar.

[0013] Furthermore, a buffer platform matched with the rotating bracket is fixedly provided on the bearing bracket, and the buffer platform is arranged between the rotating bracket and the rotating bracket driving assembly.

[0014] Furthermore, the rotating bracket is rotatably arranged on the bearing bracket via a bearing shaft.

[0015] The beneficial effects of the present invention are:

[0016] 1) In this technology, under the action of the positive electrode telescopic member and the negative electrode telescopic member, a positive electrode welding head and a negative electrode welding head simultaneously contact and weld with the welding parts, so that two welding points can be welded at the same time, effectively improving the welding efficiency.

[0017] 2) In this technology, under the action of the buffer ring, the impact force generated when the rotating bracket stops rotating is reduced on the rotating shaft, so that the rotating shaft will not be deformed or even damaged due to the impact.

[0018] 3) In this technology, under the action of the limit sleeve, the adjustment rod and the anti-drop nut, the distance between the upper end of the bearing bracket and the upper end of the rotating bracket can be easily adjusted. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 The three-dimensional structure of the welding device Figure 1 ;

[0020] Figure 2 The three-dimensional structure of the welding device Figure 2 ;

[0021] Figure 3 It is a structural diagram of the connection between the positive electrode telescopic member and the negative electrode telescopic member on the insulating mounting plate;

[0022] Figure 4 It is a structural diagram of the connection between the locking mounting plate and the locking cylinder;

[0023] Figure 5 It is the connection structure diagram between the reduction wheel and the contact switch;

[0024] Figure 6 It is a connection structure diagram between the limit sleeve and the adjusting rod;

[0025] In the figure, 1-bearing bracket, 2-rotating bracket, 3-insulating mounting plate, 4-insulating mold seat, 5-transformer, 6-positive telescopic member, 7-negative telescopic member, 8-positive welding head, 9-negative welding head, 10-welding parts, 11-rotating drive member, 12-rotating shaft, 13-swing rod, 14-auxiliary connecting rod, 15-limiting sleeve, 16-adjusting rod, 17-hinged end, 18-anti-slip nut, 19-buffer cavity, 20-buffer ring, 21-reduction wheel, 2 2-positive deceleration contact block, 23-reverse deceleration contact block, 24-contact switch, 25-locking mounting plate, 26-locking cylinder, 27-locking block, 28-buffer block, 29-limiting plate, 30-roller, 31-roller, 32-detection bracket, 33-first detection sensor, 34-second detection sensor, 35-detection end, 36-positive copper plate, 37-negative copper plate, 38-positive copper busbar, 39-negative copper busbar, 40-buffer table, 41-bearing shaft. DETAILED DESCRIPTION

[0026] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0027] See also Figure 1-Figure 6 , the present invention provides a technical solution:

[0028] A dual-point synchronous welding device for parts comprises a bearing bracket 1, a rotating bracket 2, an insulating mounting plate 3, an insulating mold seat 4, a transformer 5, a positive telescopic member 6, a negative telescopic member 7, a positive welding head 8, a negative welding head 9 and a rotating frame driving assembly, wherein the lower end of the rotating bracket 2 is hingedly arranged on the bearing bracket 1, the rotating frame driving assembly is fixedly arranged on one side of the bearing bracket 1 and the output end is hinged to the upper end of the rotating bracket 2, the insulating mold seat 4 is fixedly arranged on the other side of the bearing bracket 1 and is used to install a welding part 10, the insulating mounting plate 3 is fixedly arranged on the upper end of the rotating bracket 2, the transformer 5 is fixedly arranged on the upper surface of the insulating mounting plate 3, the fixing parts of the positive telescopic member 6 and the negative telescopic member 7 are fixedly arranged on the lower surface of the insulating mounting plate 3, and the positive telescopic member 6 and the negative telescopic member 7 are arranged one by one, the positive welding head 8 is fixedly arranged on the output end of the positive telescopic member 6 and is electrically connected to the transformer 5, the negative welding head 9 is fixedly arranged on the negative welding head 9, and the positive welding head 8 and the negative welding head 9 are respectively matched with the welding holes on the welding part 10. The rotating bracket 2 is rotatably arranged on the bearing bracket 1 through the bearing shaft 41. Among them, the bearing bracket 1 is used to install the rotating bracket 2, the insulating mold seat 4 and the rotating frame driving assembly. The function of the rotating frame driving assembly is to drive the rotating bracket 2 to rotate around the bearing shaft 41. The function of the insulating mold seat 4 is to install the welding parts 10 that need to be welded. The insulating mold seat 4 and the insulating mounting plate 3 are both composed of a metal plate and an insulating layer. The welding parts 10 in the insulating mold seat 4 are arranged on the metal plate after passing through the insulating layer; in the insulating mounting plate 3, the positive telescopic member 6 and the negative telescopic member 7 are both fixed on the metal plate through the insulating layer, and the metal plate is fixed on the rotating bracket 2. The function of the insulating mounting plate 3 is to install the transformer 5, the positive telescopic member 6 and the negative telescopic member 7 in the prior art. The positive telescopic member 6 and the negative telescopic member 7 are pneumatic cylinders in the prior art, and the pneumatic cylinders are controlled by the electromagnetic valve in the prior art. The electromagnetic valve, the rotating frame driving assembly and the transformer 5 are all electrically connected to the control center in the prior art and controlled by the control center, and automatic production is realized under the action of the control center. Multiple groups of welding telescopic parts are arranged on the insulating mounting plate 3, each group of welding telescopic parts includes a positive telescopic part 6 and a negative telescopic part 7. During welding, only one group of welding telescopic parts works, and the positive welding head 8 on the positive telescopic part 6 and the negative welding head 9 on the negative telescopic part 7 are in contact with the welding part 10 at the same time, so that two bolts can be welded to the welding part 10 at the same time.

[0029] In some embodiments, the rotating frame driving assembly includes a rotating drive member 11, a rotating shaft 12, a swing rod 13, an auxiliary connecting rod 14, a limiting sleeve 15, an adjusting rod 16 and a hinged end 17. The rotating shaft 12 is rotatably set on the supporting bracket 1, the rotating drive member 11 is fixedly set on the supporting bracket 1 and the output end is transmission-connected to one end of the rotating shaft 12, one end of the swing rod 13 is fixed on the rotating shaft 12, the other end of the swing rod 13 is hinged to one end of the auxiliary connecting rod 14, the other end of the auxiliary connecting rod 14 is fixedly provided with a limiting sleeve 15, the limiting sleeve 15 is slidably provided with an adjusting rod 16, the adjusting rod 16 is fixedly connected to one end of the hinged end 17, the other end of the hinged end 17 is hingedly set on the upper end of the rotating bracket 2, and the end of the adjusting rod 16 is provided with an anti-slip nut 18 threadedly matched with the limiting sleeve 15. The rotary drive member 11 is a motor in the prior art and is electrically connected to the control center. The control center controls the rotary drive member 11 to rotate forward or reverse. When the rotary drive member 11 is working, it drives the rotating shaft 12 to rotate. The swing rod 13 is fixed on the rotating shaft 12 to swing. The swing rod 13 drives the rotating bracket 2 to rotate around the bearing shaft 41 through the auxiliary connecting rod 14, the limiting sleeve 15, the adjusting rod 16 and the hinged end 17. The anti-slip nut 18 is threadedly matched with the adjusting rod 16, so that the distance is adjusted on the limiting sleeve 15, so that the upper end of the bearing bracket 1 and the upper end of the rotating bracket 2 are in contact.

[0030] In some embodiments, a buffer cavity 19 is provided in the limiting sleeve 15, a buffer ring 20 cooperating with the buffer cavity 19 is provided in the buffer cavity 19, and the buffer ring 20 is sleeved on the adjusting rod 16. The buffer ring 20 is a buffer ring in the prior art, and under the action of the buffer ring 20, the impact force generated when the rotating bracket 2 stops rotating is reduced on the rotating shaft 12, so that the rotating shaft 12 will not be deformed or even damaged due to the impact.

[0031] In some embodiments, a reduction wheel 21 is fixedly provided on the other end of the rotating shaft 12, and a positive reduction contact block 22 and a negative reduction contact block 23 are provided on the reduction wheel 21. The positive reduction contact block 22 and the negative reduction contact block 23 are respectively provided on both sides of the reduction wheel 21, and both the positive reduction contact block 22 and the negative reduction contact block 23 cooperate with a contact switch 24, and the contact switch 24 is fixedly provided on the bearing bracket 1. Among them, the rotating bracket 2 realizes the swinging operation with the bearing shaft 41 as the rotation center. The rotating bracket 2 needs the rotating driving member 11 to output a large power during the swinging process, and needs to stop on both sides of the swinging. If the same power is outputted before stopping, the rotating bracket 2 will have a large impact force when it stops. Therefore, controlling the rotating driving member 11 to reduce the power output before stopping can reduce the impact force. The contact switch 24 is of prior art and is electrically connected to the control center. When the reduction wheel 21 rotates forward, after the positive reduction contact block 22 contacts the contact switch 24, the control center controls the rotating drive member 11 to reduce the power output; when the reduction wheel 21 rotates reversely, after the reverse reduction contact block 23 contacts the contact switch 24, the control center controls the rotating drive member 11 to reduce the power output, thereby reducing the impact force.

[0032] In some embodiments, a locking mounting plate 25 is fixedly disposed on the upper end of the rotating bracket 2, one end of the locking mounting plate 25 intersects with the fixed portion of the locking cylinder 26, the output portion of the locking cylinder 26 is hinged to the middle portion of the locking block 27, one end of the locking block 27 is hinged to the buffer block 28, the buffer block 28 is fixedly disposed on the other end of the locking mounting plate 25, the buffer block 28 cooperates with one side of the limiting plate 29, the other end of the locking block 27 cooperates with the other side of the limiting plate 29, and the limiting plate 29 is fixedly disposed on the upper end of the bearing bracket 1. A roller 30 is rotatably disposed on the locking block 27, and a roller 31 cooperating with the limiting plate 29 is disposed on the roller 30. Among them, the locking mounting plate 25 is fixed on the rotating bracket 2 to install the locking cylinder 26 and the buffer block 28. The locking cylinder 26 is a pneumatic cylinder or a hydraulic cylinder in the prior art. The pneumatic cylinder or the hydraulic cylinder is controlled by a solenoid valve in the prior art. The solenoid valve is electrically connected to the control center and is controlled by the control center. The function of the locking cylinder 26 is to drive the locking block 27 to rotate on the buffer block 28. When the locking block 27 is locked, the rollers 31 on the buffer block 28 and the locking block 27 are in contact with the limit plate 29. At this time, the bearing bracket 1 and the rotating bracket 2 are fixedly connected together and partially separated; when the locking block 27 is opened, the roller 31 does not contact the limit plate 29. At this time, the upper ends of the bearing bracket 1 and the rotating bracket 2 can be separated.

[0033] In some embodiments, a detection bracket 32 ​​is provided on the locking mounting plate 25, and a first detection sensor 33 and a second detection sensor 34 are provided on the detection bracket 32, and the first detection sensor 33 and the second detection sensor 34 are both matched with the detection terminal 35 fixedly provided on the locking block 27. Among them, the first detection sensor 33 and the second detection sensor 34 are both laser detection sensors in the prior art and are electrically connected to the control center. The first detection sensor 33 is arranged near the fixed part side of the locking cylinder 26. When the first detection sensor 33 detects the detection terminal 35 in the prior art, the roller 31 is separated from the limit plate 29, and the first detection sensor 33 transmits the limit number to the control center, and the control center can control the rotating driving member 11 to drive the rotating bracket 2 to rotate; when the second detection sensor 34 detects the detection terminal 35, the roller 31 is in contact with the limit plate 29, the rotating bracket 2 is fixed with the bearing bracket 1, and the second detection sensor 34 transmits the limit number to the control center, and the control center can control the positive telescopic member 6 and the negative telescopic member 7 to work for welding.

[0034] In some embodiments, a positive copper plate 36 and a negative copper plate 37 are fixedly arranged on the insulating mounting plate 3, and the positive copper plate 36 is electrically connected to the transformer 5, and the positive copper plate 36 is electrically connected to the positive welding head 8 through the positive copper busbar 38, and the negative copper plate 37 is electrically connected to the negative welding head 9 through the negative copper busbar 39. Among them, the positive copper plate 36 is connected to the positive pole of the power supply through the transformer 5, and the negative copper plate 37 is connected to the negative pole of the power supply. All positive welding heads 8 are connected to the positive copper plate 36 through the positive copper busbar 38, and all negative welding heads 9 are connected to the negative copper plate 37 through the negative copper busbar 39. The positive copper busbar 38 and the negative copper plate 37 not only achieve full conductivity, but also facilitate bending for installation, and facilitate the positive telescopic member 6 and the negative telescopic member 7 to drive the positive welding head 8 and the negative welding head 9 to move and weld respectively.

[0035] In some embodiments, a buffer table 40 is fixedly provided on the support bracket 1 to cooperate with the rotating bracket 2, and the buffer table 40 is provided between the rotating bracket 2 and the rotating frame driving assembly. After the welding is completed, the rotating frame driving assembly needs to drive the rotating bracket 2 to rotate so that the rotating bracket 2 loosens the welding part 10. During the rotation process, the rotating frame driving assembly applies a large force to the rotating bracket 2. When the rotating bracket 2 stops, it will cause an impact on the rotating frame driving assembly, which may easily cause damage to the rotating frame driving assembly. The buffer table 40 is provided so that the buffer table 40 bears the impact force of the rotating bracket 2, so that the rotating frame driving assembly will not be damaged.

[0036] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "bottom", "one end", "top", "middle", "the other end", "coaxial", "one side", "inside", "front", "center", "both ends", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0037] In the present invention, unless otherwise clearly stipulated and limited, the terms such as "setting", "installation", "connection", "fixation", "hinge" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, for ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0038] The above is only a preferred embodiment of the present invention. It should be understood that the present invention is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the concept described herein through the above teachings or the technology or knowledge of the relevant field. The changes and modifications made by those skilled in the art shall not deviate from the spirit and scope of the present invention, and shall be within the scope of protection of the claims attached to the present invention.

Claims

1. A dual-point synchronous welding device for parts, characterized in that: The invention comprises a bearing support (1), a rotating support (2), an insulating mounting plate (3), an insulating mold seat (4), a transformer (5), a positive telescopic member (6), a negative telescopic member (7), a positive welding head (8), a negative welding head (9) and a rotating support driving assembly, wherein the lower end of the rotating support (2) is hingedly arranged on the bearing support (1), the rotating support driving assembly is fixedly arranged on one side of the bearing support (1) and the output end is hingedly arranged on the upper end of the rotating support (2), the insulating mold seat (4) is fixedly arranged on the other side of the bearing support (1) and is used to install welding parts (10), the insulating mounting plate (3) is fixedly arranged on the rotating support The transformer (5) is fixedly arranged on the upper end of the frame (2) on the upper surface of the insulating mounting plate (3), the fixing parts of the positive telescopic member (6) and the negative telescopic member (7) are fixedly arranged on the lower surface of the insulating mounting plate (3), and the positive telescopic member (6) and the negative telescopic member (7) are arranged in a one-to-one correspondence, the positive welding head (8) is fixedly arranged on the output end of the positive telescopic member (6) and is electrically connected to the transformer (5), the negative welding head (9) is fixedly arranged on the negative welding head (9), and the positive welding head (8) and the negative welding head (9) are respectively matched with the welding holes on the welding part (10).

2. A dual-point synchronous welding device for parts according to claim 1, characterized in that: The rotating frame driving assembly comprises a rotating driving member (11), a rotating shaft (12), a swinging rod (13), an auxiliary connecting rod (14), a limiting sleeve (15), an adjusting rod (16) and a hinged end (17); the rotating shaft (12) is rotatably arranged on the bearing bracket (1); the rotating driving member (11) is fixedly arranged on the bearing bracket (1) and the output end is transmission-connected with one end of the rotating shaft (12); one end of the swinging rod (13) is fixed on the rotating shaft (12); the swinging rod (13) is The other end of the auxiliary connecting rod (14) is hinged to one end of the auxiliary connecting rod (14), the limiting sleeve (15) is fixedly arranged on the other end of the auxiliary connecting rod (14), the adjusting rod (16) is slidably arranged in the limiting sleeve (15), the adjusting rod (16) is fixedly connected to one end of the hinged end (17), the other end of the hinged end (17) is hinged to the upper end of the rotating bracket (2), and the end of the adjusting rod (16) is provided with an anti-slip nut (18) threadedly matched with the limiting sleeve (15).

3. A dual-spot synchronous welding device for parts according to claim 2, characterized in that: A buffer cavity (19) is arranged in the limiting sleeve (15), a buffer ring (20) matching with the buffer cavity (19) is arranged in the buffer cavity (19), and the buffer ring (20) is sleeved on the adjusting rod (16).

4. A dual-spot synchronous welding device for parts according to claim 2 or 3, characterized in that: A reduction wheel (21) is fixedly arranged on the other end of the rotating shaft (12), and a positive reduction contact block (22) and a negative reduction contact block (23) are arranged on the reduction wheel (21). The positive reduction contact block (22) and the negative reduction contact block (23) are respectively arranged on two sides of the reduction wheel (21), and the positive reduction contact block (22) and the negative reduction contact block (23) are both matched with a contact switch (24), and the contact switch (24) is fixedly arranged on the supporting bracket (1).

5. A dual-spot synchronous welding device for parts according to any one of claims 1 to 3, characterized in that: A locking mounting plate (25) is fixedly arranged on the upper end of the rotating bracket (2), one end of the locking mounting plate (25) is connected to the fixed part of the locking cylinder (26), the output part of the locking cylinder (26) is hinged to the middle part of the locking block (27), one end of the locking block (27) is hinged to the buffer block (28), the buffer block (28) is fixedly arranged on the other end of the locking mounting plate (25), the buffer block (28) cooperates with one side surface of the limiting plate (29), the other end of the locking block (27) cooperates with the other side surface of the limiting plate (29), and the limiting plate (29) is fixedly arranged on the upper end of the bearing bracket (1).

6. A dual-spot synchronous welding device for parts according to claim 5, characterized in that: A roller (30) is rotatably arranged on the locking block (27), and a roller (31) cooperating with the limiting plate (29) is arranged on the roller (30).

7. A dual-spot synchronous welding device for parts according to claim 5, characterized in that: The locking mounting plate (25) is provided with a detection bracket (32), and the detection bracket (32) is provided with a first detection sensor (33) and a second detection sensor (34), and the first detection sensor (33) and the second detection sensor (34) both cooperate with a detection terminal (35) fixedly provided on the locking block (27).

8. A dual-spot synchronous welding device for parts according to any one of claims 1 to 3, characterized in that: A positive copper plate (36) and a negative copper plate (37) are fixedly arranged on the insulating mounting plate (3); the positive copper plate (36) is electrically connected to the transformer (5); the positive copper plate (36) is electrically connected to the positive welding head (8) via a positive copper busbar (38); and the negative copper plate (37) is electrically connected to the negative welding head (9) via a negative copper busbar (39).

9. A dual-spot synchronous welding device for parts according to any one of claims 1 to 3, characterized in that: A buffer platform (40) cooperating with the rotating bracket (2) is fixedly arranged on the bearing bracket (1); the buffer platform (40) is arranged between the rotating bracket (2) and the rotating bracket driving assembly.

10. A dual-spot synchronous welding device for parts according to any one of claims 1 to 3, characterized in that: The rotating bracket (2) is rotatably arranged on the bearing bracket (1) via a bearing shaft (41).

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