A circumferential welding device for metal parts

Abstract

The present invention relates to the field of metal part processing, and specifically discloses a circumferential welding device for metal parts, including: a base; an equipment box assembly, the equipment box assembly is connected to the base; a weldment docking device, the weldment docking device is connected to the equipment box assembly; an inner part composite limiting assembly, the inner part composite limiting assembly is connected to the inside of the equipment box assembly; an outer part composite limiting assembly, the outer part composite limiting assembly is connected to the inside of the equipment box assembly; a top-mounted welding device, the top-mounted welding device is connected to the equipment box assembly; wherein, the welding docking device includes: an outer part positioning assembly, the outer part positioning assembly is connected to the inside of the equipment box assembly; an inner part positioning assembly, the inner part positioning assembly is connected to the outer part positioning assembly. The outer part positioning assembly and the inner part positioning assembly of this device cooperate to realize flexible limiting of the welding outer part and the welding inner part, thereby improving the docking flexibility of the welding outer part and the welding inner part.

Description

Technical Field

[0001] The present invention relates to the metal part processing industry, and more particularly to a circumferential welding device for metal parts. Background Art

[0002] In modern industrial production, the connection of metal parts is a crucial link. Especially in the fields of machinery manufacturing, aerospace, automotive manufacturing, petrochemical industry, and marine development, the connection quality of metal parts directly affects the performance, safety, and service life of products. Although traditional metal connection methods such as bolt connection and riveting are easy to operate, in some specific situations, such as when high pressure, high temperature, or high stress needs to be withstood, these connection methods often fail to meet the requirements. Therefore, welding technology has been widely used because it can achieve a firm connection between metal parts.

[0003] Among many welding application scenarios, circumferential welding is a special welding method that mainly targets metal parts with annular or tubular structures. However, circumferential welding also faces some challenges. The circumferential welding device has limited flexibility in docking between annular welded parts, and situations such as partial welding and missed welding are likely to occur. In view of the above problems, there is an urgent need to develop a more suitable circumferential welding device for metal parts. Summary of the Invention

[0004] The purpose of the present invention is to provide a circumferential welding device for metal parts to solve the problems raised in the above background art.

[0005] To achieve the above purpose, the present invention provides the following technical solutions:

[0006] A circumferential welding device for metal parts, comprising:

[0007] A base;

[0008] An equipment box assembly, which is connected to the base;

[0009] A weldment docking device, which is connected to the equipment box assembly;

[0010] An inner part composite limiting component, which is connected to the inside of the equipment box assembly;

[0011] An outer part composite limiting component, which is connected to the inside of the equipment box assembly;

[0012] An overhead welding device, which is connected to the equipment box assembly and is used for welding treatment of the inner part and the outer part of the weldment;

[0013] Among them, the weldment docking device includes:

[0014] The outer part positioning component is internally connected to the equipment box component and is used to cooperate with the outer part composite limiting component to complete the limiting and fixing of the welded outer part;

[0015] The inner part positioning component is connected to the outer part positioning component and is used to cooperate with the inner part composite limiting component to complete the limiting and fixing of the welded inner part.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: The outer part positioning component and the inner part positioning component of the present device cooperate to realize flexible limiting of the welded outer part and the welded inner part, thereby improving the docking flexibility of the welded outer part and the welded inner part, preventing the occurrence of partial welding and missed welding. At the same time, the inner part composite limiting component and the outer part composite limiting component cooperate to further improve the welding alignment stability. Brief Description of the Drawings

[0017] Figure 1 It is a schematic structural diagram of a circumferential welding device for metal parts in an embodiment of the present invention.

[0018] Figure 2 It is a schematic structural diagram of the connection structure between the connection disk and the positioning cylinder in a circumferential welding device for metal parts in an embodiment of the present invention.

[0019] Figure 3 It is Figure 1 a partial structural schematic diagram at A in

[0020] Figure 4 It is a schematic internal structure diagram of the limiting frame bin in a circumferential welding device for metal parts in an embodiment of the present invention.

[0021] Figure 5 It is Figure 1 a partial structural schematic diagram at B in

[0022] In the figure: 1 - base, 2 - equipment box assembly, 3 - welded part docking device, 4 - outer part positioning assembly, 5 - inner part positioning assembly, 6 - inner part composite limiting assembly, 7 - outer part composite limiting assembly, 8 - top welding device, 201 - bottom box, 202 - top box, 203 - limiting rod, 204 - first driving part, 205 - anti-slip seat, 401 - second driving part, 402 - connecting frame, 403 - conical frame, 501 - connecting plate, 502 - first elastic part, 503 - connecting board, 504 - positioning frame, 505 - positioning cylinder, 506 - through slot, 507 - third driving part, 508 - beam rack plate, 601 - fixing frame, 602 - connecting bin, 603 - second elastic part, 604 - transmission board, 605 - third elastic part, 701 - fourth driving part, 702 - limiting frame bin, 703 - fifth driving part, 704 - inclined plane frame, 801 - sixth driving part, 802 - top frame, 803 - seventh driving part, 804 - silo, 805 - ring frame, 806 - fixing plate, 807 - eighth driving part, 808 - ninth driving part, 809 - welded part. Detailed implementation manner

[0023] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0024] A circumferential welding device for metal parts, characterized in that in an embodiment of the present invention, as Figure 1 shown, it includes: a base 1; an equipment box assembly 2, the equipment box assembly 2 is connected to the base 1; a welded part docking device 3, the welded part docking device 3 is connected to the equipment box assembly 2; an inner part composite limiting assembly 6, the inner part composite limiting assembly 6 is connected to the inside of the equipment box assembly 2; an outer part composite limiting assembly 7, the outer part composite limiting assembly 7 is connected to the inside of the equipment box assembly 2; a top welding device 8, the top welding device 8 is connected to the equipment box assembly 2 and is used for welding treatment of the inner part and the outer part to be welded; wherein, the welded part docking device 3 includes: an outer part positioning assembly 4, the outer part positioning assembly 4 is connected to the inside of the equipment box assembly 2 and is used to cooperate with the outer part composite limiting assembly 7 to complete the limiting and fixing of the outer part to be welded; an inner part positioning assembly 5, the inner part positioning assembly 5 is connected to the outer part positioning assembly 4 and is used to cooperate with the inner part composite limiting assembly 6 to complete the limiting and fixing of the inner part to be welded.

[0025] In an embodiment of the present invention:

[0026] As Figure 1As shown in the figure, the equipment box assembly 2 includes: a bottom box 201, the bottom box 201 is connected to the base 1; a top box 202, the top box 202 is connected to the side of the bottom box 201 away from the base 1; at least two limiting rods 203, the limiting rods 203 are connected to the inside of the bottom box 201; a first driving member 204, the first driving member 204 is connected to the inside of the bottom box 201; the first driving member 204 is selected as an electric telescopic frame; an anti-slip seat 205, the anti-slip seat 205 is connected to the first driving member 204;

[0027] The welded inner member is a tubular member, and the welded outer member is an annular member. When aligning and fixing the welded inner member and the welded outer member, first, according to the inner diameter dimension of the welded outer member, adjust the height of the outer member positioning assembly 4 exposed from the top box 202. After the adjustment is completed, through the cooperation of the outer member positioning assembly 4 and the outer member composite limiting assembly 7, complete the limiting and fixing of the welded outer member. Then insert the welded inner member into the outer member positioning assembly 4. According to the length and welding position of the welded inner member, adjust the height and position of the anti-slip seat 205 through the first driving member 204, so that the bottom of the inserted welded inner member abuts against the top side of the anti-slip seat 205, and the welding position of the welded inner member is near the height position of the inner wall of the fixed welded outer member. Then, through the inner member positioning assembly 5 and the inner member composite limiting assembly 6, complete the limiting and fixing of the welded inner member, and then complete the circumferential welding treatment of the welded inner member and the welded outer member through the top-mounted welding device 8;

[0028] In this application, the first driving member 204 is not limited to an electric telescopic frame. Other devices such as linear motors, electric cylinders, or cylinder drives can also be used, as long as the longitudinal movement adjustment of the anti-slip seat 205 can be achieved, and no specific limitation is made here.

[0029] In an embodiment of the present invention:

[0030] As Figure 1 shown, the outer member positioning assembly 4 includes: at least two second driving members 401, the second driving members 401 are connected to the top side inside the bottom box 201; the second driving members 401 are selected as electric telescopic rods; a connecting frame 402, the connecting frame 402 is connected to the second driving members 401; a conical frame 403, the conical frame 403 is connected to the two side connecting frames 402;

[0031] A groove (not shown in the figure) for the through connection of the conical frame 403 is provided in the middle of the top box 202. The inside of the conical frame 403 is hollow, and an anti-slip layer is provided on the outside of the conical frame 403. According to the inner diameter size of the welded outer part, the second driving member 401 adjusts the height of the conical frame 403 exposed from the top box 202. After the height adjustment of the conical frame 403 is completed, the welded outer part is sleeved on the outside of the conical frame 403. The bottom horizontal plane of the welded outer part abuts against the top side of the top box 202, and the bottom side of the inner wall of the welded outer part abuts against the conical frame 403, and the height of the exposed conical frame 403 is less than the height of the inner wall of the welded outer part, so as to leave the top side area of the inner wall of the welded outer part for welding;

[0032] In this application, the second driving member 401 is not limited to an electric telescopic rod. A linear motor, an electric cylinder or a cylinder drive, etc. can also be used, as long as the longitudinal movement adjustment of the conical frame 403 can be realized, and no specific limitation is made here.

[0033] In an embodiment of the present invention:

[0034] As Figures 1 to 4 shown, the outer part composite limiting assembly 7 includes: at least two fourth driving members 701, and the fourth driving members 701 are connected to the inside of the top box 202; the fourth driving members 701 are selected as electric telescopic frames; a limiting frame bin 702, the limiting frame bin 702 is slidably connected to the top box 202 through and is connected to the fourth driving member 701; a fifth driving member 703, the fifth driving member 703 is connected to the inside of the limiting frame bin 702; the fifth driving member 703 is selected as an electric telescopic frame; an inclined plane frame 704, the inclined plane frame 704 is connected to the fourth driving member 703 and is arranged inside the limiting frame bin 702;

[0035] A limiting groove (not shown in the figure) for the through movement of the limiting frame bin 702 is also provided on the top of the top box 202. When the welded outer part abuts against the conical frame 403, according to the position of the welded outer part, under the drive of the fourth driving members 701 on both sides, the limiting frame bins 702 on both sides move towards each other, so that the outer walls of the limiting frame bins 702 on both sides abut against the outside of the welded outer part, completing the horizontal clamping of the welded outer part. Then the fifth driving member 703 operates to drive the inclined plane frame 704 to move downwards, so that the inclined plane side of the inclined plane frame 704 abuts against the outside of the welded outer part, further improving the horizontal clamping stability of the welded outer part, and at the same time providing a downward pressing force on the welded outer part, further improving the overall fixing stability of the welded outer part;

[0036] In this application, the fourth driving member 701 and the fifth driving member 703 are not limited to an electric telescopic frame. A linear motor, an electric cylinder or a cylinder drive, etc. can also be used, as long as the horizontal movement adjustment of the limiting frame bin 702 and the longitudinal movement adjustment of the inclined plane frame 704 can be realized, and no specific limitation is made here.

[0037] In one embodiment of the present invention:

[0038] As Figure 1 and Figure 2 shown, the inner part positioning assembly 5 includes: a connecting disk 501, the connecting disk 501 is connected to the bottom side of the conical frame 403; a plurality of first elastic members 502, the plurality of first elastic members 502 are connected to the side of the connecting disk 501 away from the conical frame 403; the first elastic member 502 is selected as an elastic shaft frame; a connecting plate 503, the connecting plate 503 is connected to the first elastic member 502; a positioning frame 504, the positioning frame 504 is connected to the inner side of the connecting plate 503; a positioning cylinder 505, the positioning cylinder 505 is fixedly connected through the connecting disk 501; a plurality of through grooves 506, the plurality of through grooves 506 are arranged on the outer side of the positioning cylinder 505 for the positioning frame 504 to penetrate and communicate; at least two third driving members 507, the third driving members 507 are connected to the side of the connecting disk 501 away from the conical frame 403; the third driving member 507 is selected as an electric telescopic frame; a beam frame disk 508, the beam frame disk 508 is connected to the end of the third driving member 507 away from the connecting disk 501 and is sleeved outside the plurality of positioning frames 504;

[0039] The beam frame disk 508 is of an annular structure. When the welded inner part is inserted, it is inserted into the conical frame 403 and the positioning cylinder 505 in sequence until the bottom of the welded inner part abuts against the anti-slip seat 205. Then, the third driving member 507 drives the beam frame disk 508 to move downward. The inner wall of the downward-moving beam frame disk 508 abuts against the outer sides of the plurality of positioning frames 504, driving the bottoms of the plurality of positioning frames 504 to rotate toward the side close to the positioning cylinder 505. The positioning frames 504 at the corresponding positions penetrate the through grooves 506 and abut against the outer wall of the welded inner part. The plurality of positioning frames 504 cooperate to complete the multi-point fixation of the welded inner part;

[0040] In this application, the third driving member 507 is not limited to an electric telescopic frame. A linear motor, an electric cylinder or a cylinder drive, etc. can also be used, as long as the longitudinal movement adjustment of the beam frame disk 508 can be realized, and no specific limitation is made here.

[0041] In one embodiment of the present invention:

[0042] As Figure 1As shown, the inner component composite limiting assembly 6 includes: a fixing frame 601, and the fixing frame 601 is connected to the beam tray frame 508; a connecting bin 602, the connecting bin 602 is connected to one end of the fixing frame 601 away from the beam tray 508, and is sleeved and slidably connected to the limiting rod 203; a second elastic member 603, the second elastic member 603 is connected to the inside of the connecting bin 602; the second elastic member 603 is an elastic telescopic rod; a transmission plate 604, the transmission plate 604 is connected to the second elastic member 603, is slidably connected through the connecting bin 602, and abuts against the connecting plate 503; a third elastic member 605, the third elastic member 605 is movably connected through the connecting bin 602, and is connected to one side of the transmission plate 604 away from the second elastic member 603; the third elastic member 605 is an elastic telescopic column;

[0043] When the beam tray 508 moves longitudinally, it can drive the connecting bin 602 to move longitudinally along the direction of the limiting rod 203. At the same time, when the connecting plate 503 rotates towards the positioning cylinder 505, it can drive the transmission plate 604 to move horizontally, and then drive the third elastic member 605 to move towards the inner component in the middle for welding, so that a plurality of third elastic members 605 abut against the outer wall of the welding inner component, completing the composite limiting of the welding inner component. When limiting, the third elastic member 605 can elastically contract to expand the limiting range.

[0044] In an embodiment of the present invention:

[0045] Such as Figure 1 and Figure 5 As shown, the overhead welding device 8 includes: a sixth driving member 801, and the sixth driving member 801 is connected to the top box 201; the sixth driving member 801 is an electric telescopic shaft seat; a top frame 802, the top frame 802 is connected to one end of the sixth driving member 801 away from the top box 201; a seventh driving member 803, the seventh driving member 803 is connected to the top frame 802; the seventh driving member 803 is an electric shaft seat; a silo 804, the silo 804 passes through the top frame 802 and is connected to the seventh driving member 803; a ring frame 805, the ring frame 805 is connected to one side of the silo 804 away from the top frame 802; a fixing plate 806, the fixing plate 806 is connected to the ring frame 805; an eighth driving member 807, the eighth driving member 807 is connected to the fixing plate 806; the eighth driving member 807 is an electric telescopic frame; a ninth driving member 808, the ninth driving member 808 is connected to one end of the eighth driving member 807 away from the fixing plate 806, and is slidably connected to the ring frame 805; the ninth driving member 808 is an electric telescopic frame; a welding member 809, the welding member 809 is connected to the ninth driving member 808; the welding member 809 is an electric welding torch;

[0046] When placing the outer welding part and the inner welding part, the sixth driving member 801 rotates to rotate components such as the silo 804 out of the top of the conical frame 403. After the outer welding part and the inner welding part are placed, the components such as the silo 804 move to Figure 1 the position shown. The eighth driving member 807 and the ninth driving member 808 cooperate to complete the position adjustment of the welding part 809. Then, the sixth driving member 801 drives the top frame 802 to move downward, so that the welding part 809 moves to the welding position. Then, the seventh driving member 803 drives the silo 804 to rotate, and then the welding part 809 rotates to complete the circumferential welding of the outer welding part and the inner welding part;

[0047] In this application, the sixth driving member 801 is not limited to an electric telescopic shaft seat. It can also be driven by a linear motor, an electric cylinder, or a cylinder, etc., as long as it can achieve the height adjustment and rotation adjustment of the top frame 802, and no specific limitation is made here; the seventh driving member 801 is not limited to an electric shaft seat. It can also be driven by a linear motor, an electric cylinder, or a cylinder, etc., as long as it can achieve the rotation adjustment of the silo 804, and no specific limitation is made here; the eighth driving member 807 and the ninth driving member 808 are not limited to an electric telescopic frame. It can also be driven by a linear motor, an electric cylinder, or a cylinder, etc., as long as it can achieve the movement adjustment of the ninth driving member 808 and the welding part 809, and no specific limitation is made here.

[0048] The working principle of the present invention is as follows: The welding inner member is a tubular member, and the welding outer member is an annular member. When aligning and fixing the welding inner member and the welding outer member, first, according to the inner diameter size of the welding outer member, adjust the height of the outer member positioning assembly 4 exposed from the top box 202. After the adjustment is completed, cooperate with the outer member positioning assembly 4 and the outer member composite limiting assembly 7 to complete the limiting and fixing of the welding outer member. Then insert the welding inner member into the outer member positioning assembly 4. According to the length of the welding inner member and the welding position, adjust the height of the anti-slip seat 205 and the position of the welding inner member through the first driving member 204, so that the bottom of the inserted welding inner member abuts against the top side of the anti-slip seat 205, and the welding position of the welding inner member is near the height position of the inner wall of the fixed welding outer member. Then, through the inner member positioning assembly 5 and the inner member composite limiting assembly 6, complete the limiting and fixing of the welding inner member, and then complete the circumferential welding treatment of the welding inner member and the welding outer member through the top-mounted welding device 8. The first driving member 204 is not limited to an electric telescopic frame. It can also adopt a linear motor, an electric cylinder, or a cylinder drive, etc., as long as it can realize the longitudinal movement adjustment of the anti-slip seat 205. Specific limitations are not made here. A groove body (not shown in the figure) for the through connection of the conical frame 403 is provided in the middle of the top box 202. The inside of the conical frame 403 is hollow, and an anti-slip layer is provided on the outside of the conical frame 403. According to the inner diameter size of the welding outer member, the second driving member 401 adjusts the height of the conical frame 403 exposed from the top box 202. After the height adjustment of the conical frame 403 is completed, the welding outer member is sleeved outside the conical frame 403. The bottom horizontal plane of the welding outer member abuts against the top side of the top box 202, and the bottom side of the inner wall of the welding outer member abuts against the conical frame 403, and the exposed height of the conical frame 403 is less than the height of the inner wall of the welding outer member, so as to leave the top side area of the inner wall of the welding outer member for welding. The second driving member 401 is not limited to an electric telescopic rod. It can also adopt a linear motor, an electric cylinder, or a cylinder drive, etc., as long as it can realize the longitudinal movement adjustment of the conical frame 403. Specific limitations are not made here. A limiting groove (not shown in the figure) for the through movement of the limiting frame bin 702 is also provided on the top of the top box 202. When the welding outer member abuts against the conical frame 403, according to the position of the welding outer member, drive the two-sided limiting frame bins 702 to move towards each other under the drive of the two-sided fourth driving member 701, so that the outer walls of the two-sided limiting frame bins 702 abut against the outside of the welding outer member to complete the horizontal clamping of the welding outer member. Then the fifth driving member 703 operates to drive the inclined plane frame 704 to move downward, so that the inclined plane side of the inclined plane frame 704 abuts against the outside of the welding outer member, further improving the horizontal clamping stability of the welding outer member, and at the same time providing a downward pressing force on the welding outer member to further improve the overall fixing stability of the welding outer member. The fourth driving member 701 and the fifth driving member 703 are not limited to an electric telescopic frame. It can also adopt a linear motor, an electric cylinder, or a cylinder drive, etc., as long as it can realize the horizontal movement adjustment of the limiting frame bin 702 and the longitudinal movement adjustment of the inclined plane frame 704. Specific limitations are not made here;

[0049] The beam rack plate 508 is of a circular structure. When the welding inner part is inserted, it is sequentially inserted into the conical rack 403 and the positioning cylinder 505 until the bottom of the welding inner part abuts against the anti-slip seat 205. Then, the third driving member 507 drives the beam rack plate 508 to move downward. The inner wall of the downward-moving beam rack plate 508 abuts against the outer sides of a plurality of positioning racks 504, driving the bottoms of the plurality of positioning racks 504 to rotate toward the side close to the positioning cylinder 505. The positioning racks 504 at the corresponding positions penetrate through the through slots 506 and abut against the outer wall of the welding inner part. The plurality of positioning racks 504 cooperate to complete the multi-point fixation of the welding inner part. The third driving member 507 is not limited to an electric telescopic rack. It can also be driven by a linear motor, an electric cylinder, a cylinder, etc., as long as it can realize the longitudinal movement adjustment of the beam rack plate 508. Specific limitations are not made here. When the beam rack plate 508 moves longitudinally, it can drive the connection bin 602 to move longitudinally along the direction of the limiting rod 203. At the same time, when the connecting plate 503 rotates toward the positioning cylinder 505, it can drive the transmission plate 604 to move horizontally, and then drive the third elastic member 605 to move toward the middle welding inner part, so that a plurality of third elastic members 605 abut against the outer wall of the welding inner part, completing the composite limit of the welding inner part. When limiting, the third elastic member 605 can elastically contract to expand the limiting range. When placing the welding outer part and the welding inner part, the sixth driving member 801 rotates to rotate the components such as the silo 804 out of the top of the conical rack 403. After the welding outer part and the welding inner part are placed, the components such as the silo 804 move to Figure 1 the position shown. The eighth driving member 807 and the ninth driving member 808 cooperate to complete the position adjustment of the welding part 809. Then, the sixth driving member 801 drives the top rack 802 to move downward, so that the welding part 809 moves to the welding position. Then, the seventh driving member 803 drives the silo 804 to rotate, and then the welding part 809 rotates to complete the circumferential welding of the welding outer part and the welding inner part. The sixth driving member 801 is not limited to an electric telescopic shaft seat. It can also be driven by a linear motor, an electric cylinder, a cylinder, etc., as long as it can realize the height adjustment and rotation adjustment of the top rack 802. Specific limitations are not made here; the seventh driving member 801 is not limited to an electric shaft seat. It can also be driven by a linear motor, an electric cylinder, a cylinder, etc., as long as it can realize the rotation adjustment of the silo 804. Specific limitations are not made here; the eighth driving member 807 and the ninth driving member 808 are not limited to an electric telescopic rack. It can also be driven by a linear motor, an electric cylinder, a cylinder, etc., as long as it can realize the movement adjustment of the ninth driving member 808 and the welding part 809. Specific limitations are not made here.

[0050] In summary, the cooperation between the outer part positioning component 4 and the inner part positioning component 5 of the present device can achieve flexible limiting of the welded outer part and the welded inner part, thereby improving the docking flexibility of the welded outer part and the welded inner part, preventing the occurrence of partial welding and missed welding. At the same time, the cooperation between the inner part composite limiting component 6 and the outer part composite limiting component 7 further improves the welding alignment stability.

[0051] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A metal circumferential welding device, characterized in that: include: Base; An equipment box assembly, wherein the equipment box assembly is connected to the base; A weldment docking device, the weldment docking device is connected to the equipment box assembly; An internal composite limiter assembly, wherein the internal composite limiter assembly is connected to the inside of the equipment box assembly; An external composite limiter assembly, wherein the external composite limiter assembly is connected to the inside of the equipment box assembly; An overhead welding device, which is connected to the equipment box assembly and is used for welding internal parts and external parts; Wherein, the weldment butt joint device comprises: An external part positioning assembly, which is connected to the inside of the equipment box assembly and is used to cooperate with the external part composite limiting assembly to complete the limiting fixation of the welded external part; An internal part positioning assembly, which is connected to the external part positioning assembly and is used to cooperate with the internal part composite limiting assembly to complete the limiting fixation of the welded internal part; The equipment box assembly includes: A bottom box connected to the base; A top box, the top box being connected to a side of the bottom box away from the base; At least two limit rods, the limit rods are connected to the inside of the bottom box; A first driving member, the first driving member is connected to the inside of the bottom box; the first driving member is an electric telescopic frame; An anti-slip seat, the anti-slip seat is connected to the first driving member; The external part positioning assembly comprises: at least two second driving members, the second driving members being connected to the top side of the interior of the bottom box; A connecting frame connected to the second driving member; A conical frame, wherein the conical frame is connected to connecting frames on both sides; The external component composite limit assembly comprises: at least two fourth driving members, wherein the fourth driving members are connected to the interior of the top box; A limit frame bin, wherein the limit frame bin is slidably connected to the top box and is connected to the fourth driving member; A fifth driving member, the fifth driving member is connected to the interior of the limiting frame bin; An inclined plane frame, the inclined plane frame is connected to the fourth driving member and is arranged inside the limiting frame bin; The internal positioning assembly comprises: A connecting plate connected to the bottom side of the cone frame; A plurality of first elastic members, wherein the plurality of first elastic members are connected to a side of the connecting plate away from the conical frame; A connecting plate connected to the first elastic member; A positioning frame connected to the inner side of the connecting plate; A positioning cylinder, the positioning cylinder is penetrated and fixedly connected with the connecting plate; A plurality of through slots, which are arranged on the outside of the positioning tube and are used for penetrating and communicating with the positioning frame; at least two third driving members, wherein the third driving members are connected to a side of the connecting plate away from the conical frame; A tie rack plate, the tie rack plate is connected to an end of the third driving member away from the connecting plate, and is sleeved outside the plurality of positioning racks; The internal composite limiter assembly comprises: A fixed frame, the fixed frame is connected to the beam tray frame; A connecting bin, the connecting bin is connected to an end of the fixing frame away from the bracket plate, and is slidably connected to the limiting rod sleeve; a second elastic member, the second elastic member being connected to the interior of the connecting compartment; A transmission plate, the transmission plate is connected to the second elastic member, is slidably connected to the connecting chamber, and is in contact with the connecting plate; The third elastic member is movably connected to the connecting chamber and is connected to a side of the transmission plate away from the second elastic member.

2. The metal parts circumferential welding equipment according to claim 1, characterized in that: The overhead welding device comprises: a sixth driving member, the sixth driving member being connected to the top box; A top frame connected to an end of the sixth driving member away from the top box; a seventh driving member connected to the top frame; A silo, wherein the silo passes through the top frame and is connected to a seventh driving member; A ring frame connected to a side of the silo away from the top frame; A fixing plate connected to the ring frame; an eighth driving member connected to the fixing plate; a ninth driving member, the ninth driving member being connected to an end of the eighth driving member away from the fixed plate and being slidably connected to the ring frame; A welding member is connected to the ninth driving member.

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