Heat shield spot welding positioning device

Abstract

The utility model relates to the technical field of automobile accessory welding, in particular to a heat shield spot welding positioning device which comprises a base, a portal frame is arranged on the base, an upper die assembly is rotationally arranged on an installation base, and the installation base is driven by a driving assembly arranged on the portal frame to ascend and descend. The upper die assembly comprises an upper positioning module matched with one face of the heat shield in shape and upper skirt edge positioning modules arranged on the two sides of the upper positioning module. The lower die assembly is rotationally arranged on the base and comprises a lower positioning module matched with the other face of the heat shield in shape and lower skirt edge positioning modules arranged on the two sides of the lower positioning module. The upper positioning module and the lower positioning module are matched for positioning the heat shield, and the upper skirt edge positioning module and the lower skirt edge positioning module are used for pressing the skirt edge of the heat shield, so that the problems that upper and lower shield bodies of the heat shield are difficult to align and close, and spot welding of the heat shield is inconvenient are solved, and the welding quality and efficiency of the heat shield are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of auto parts welding, in particular to a heat insulation cover spot welding positioning device. Background Art

[0002] The automotive catalytic converter is the most important off-board purification device installed in the automotive exhaust system. It can convert harmful gases such as CO, HC and NOx emitted from the automotive exhaust into harmless carbon dioxide, water and nitrogen through oxidation and reduction. In the production process of the catalyst, it is necessary to weld a heat shield to the catalyst to isolate the heat and avoid burns. In the welding process, the welding parts need to be spot welded first, and then section welded. In the traditional method, it is difficult to accurately align the upper and lower covers of the heat shield by hand, and in the natural state, the heat shield will not close tightly, making it difficult to spot weld directly, resulting in poor welding quality, long production time, and high labor consumption. Utility Model Content

[0003] In order to solve the above technical problems, the utility model provides a heat shield spot welding positioning device to solve the problem that the heat shield is difficult to align and close, and it is inconvenient to spot weld the heat shield, thereby improving the welding quality and efficiency of the heat shield.

[0004] In order to solve the above technical problems, the utility model provides a heat insulation cover spot welding positioning device, comprising: a base, on which a gantry is provided, an upper mold assembly, which is rotatably arranged on a mounting seat, and the mounting seat is driven to rise and fall by a driving assembly arranged on the gantry, the upper mold assembly comprises an upper positioning module adapted to the shape of one side of the heat insulation cover and upper skirt positioning modules arranged on both sides of the upper positioning module; a lower mold assembly, which is rotatably arranged on the base, the lower mold assembly comprises a lower positioning module adapted to the shape of the other side of the heat insulation cover and lower skirt positioning modules arranged on both sides of the lower positioning module; the upper positioning module cooperates with the lower positioning module to position the heat insulation cover, and the upper skirt positioning module and the lower skirt positioning module are used to press the skirt of the heat insulation cover.

[0005] Furthermore, the upper mold assembly includes an upper mold base, the upper mold base is connected to the mounting base via a first bearing, and the upper positioning module and the lower skirt positioning module are arranged on the lower side of the upper mold base; the lower mold assembly includes a lower mold base, the lower mold base is connected to the base via a second bearing, and the lower positioning module and the lower skirt positioning module are arranged on the upper side of the lower mold base.

[0006] Furthermore, a lower angle positioning structure is provided between the lower mold base and the base, and an upper angle positioning structure is provided between the upper mold base and the mounting base. The lower angle positioning structure cooperates with the upper angle positioning structure to align the lower positioning module with the upper positioning module.

[0007] Furthermore, the angle positioning structure includes at least one group of positioning marble structures, and the positioning marble structure includes positioning marbles fixed on the upper mold base and / or the base, and positioning holes provided on the mounting base and / or the lower mold base for cooperating with the positioning marbles.

[0008] Furthermore, the upper angle positioning structure includes two groups of first positioning marble structures symmetrically distributed on both sides of the first bearing; the lower angle positioning structure includes six groups of second positioning marble structures evenly distributed around the circumference of the second bearing, wherein the two symmetrical groups of second positioning marble structures cooperate with the two groups of first positioning marble structures to align the lower positioning module with the lower positioning module.

[0009] Furthermore, the driving assembly includes a linear driving cylinder arranged on the gantry, and the telescopic end of the linear driving cylinder is fixed to the mounting seat.

[0010] Furthermore, at least one guide rod is provided on the mounting seat, and the guide rod movably passes through a guide sleeve fixed on the gantry and is connected to a limit plate.

[0011] Furthermore, the upper skirt positioning module and the lower skirt positioning module are both provided with a hollow structure, and the hollow structure corresponds to the spot welding area of ​​the heat insulation cover.

[0012] Furthermore, a sensor for limiting the downward position of the mounting seat is provided on the gantry.

[0013] Furthermore, the base is provided with a plurality of groups of supporting rollers evenly distributed around the circumference of the second bearing, and the supporting rollers are in rolling cooperation with the lower mold assembly.

[0014] The beneficial effects of the utility model are as follows: the base supports the lower mold assembly and the gantry, and the gantry supports the upper mold assembly and the drive assembly. The upper mold assembly is rotatably arranged on the mounting seat, and the drive assembly on the gantry drives the mounting seat to move up and down to drive the upper mold assembly to move away from the heat insulation cover or press on the heat insulation cover. The lower mold assembly is rotatably arranged on the base, that is, the lower mold assembly and the upper mold assembly can be rotated relative to the mounting seat and the base. After the heat insulation cover is placed between the upper mold assembly and the lower mold assembly, it is convenient to rotate the upper mold assembly and the lower mold assembly to perform spot welding operations on various parts around the heat insulation cover. The upper mold assembly includes an upper positioning module adapted to the shape of one side of the heat insulation cover and upper skirt positioning modules arranged on both sides of the upper positioning module, the lower mold assembly includes a lower positioning module adapted to the shape of one side of the heat insulation cover and lower skirt positioning modules arranged on both sides of the lower positioning module, the lower mold positioning block supports the heat insulation cover, and the lower skirt positioning module supports the skirt of the heat insulation cover. When the upper mold assembly is driven by the driving assembly to press down, the upper positioning module is pressed on the heat insulation cover and cooperates with the lower positioning module to press and position the heat insulation cover, the upper skirt positioning module is pressed on the skirt of the heat insulation cover and cooperates with the lower skirt positioning module to press and position the skirt of the heat insulation cover, and then the heat insulation cover is spot welded. In summary, by adopting the utility model, the heat insulation cover can be accurately positioned through the cooperation of the upper mold assembly and the lower mold assembly, so that the skirt of the heat insulation cover is tightened, and the welding quality is improved. In addition, the heat insulation cover is driven to rotate along with the upper mold assembly and the lower mold assembly through the rotatable upper mold assembly and the lower mold assembly, and the periphery of the heat insulation cover is spot-welded, which is convenient for spot-welding the heat insulation cover and improves the welding efficiency.

[0015] The utility model is further described below in conjunction with the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0017] Figure 2 It is a schematic diagram of the cross-sectional structure of the utility model.

[0018] In the accompanying drawings: 100-base, 110-gantry, 111-guide sleeve, 112-sensor, 120-support roller, 200-upper mold assembly, 210-mounting seat, 220-drive assembly, 221-linear drive cylinder, 222-guide rod, 223-limiting plate, 230-upper positioning module, 240-upper skirt positioning module, 250-upper mold seat, 260-first bearing, 270-upper angle positioning structure, 271-positioning marbles, 272-positioning holes, 300-lower mold assembly, 310-lower positioning module, 320-lower skirt positioning module, 330-lower mold seat, 331-handle, 340-second bearing, 350-lower angle positioning structure. DETAILED DESCRIPTION

[0019] With reference to the accompanying drawings, specific embodiments of the present invention will be described in detail.

[0020] Reference Figure 1 to Figure 2 The utility model provides an embodiment of a heat shield spot welding positioning device.

[0021] A heat shield spot welding positioning device comprises a base 100 , on which a gantry 110 is arranged. The base 100 supports a lower mold assembly 300 , and the gantry 110 supports an upper mold assembly 200 and a driving assembly 220 .

[0022] The gantry 110 is provided with a driving assembly 220, the output end of the driving assembly 220 is fixed to the mounting seat 210, and the mounting seat 210 is driven to rise and fall by the driving assembly 220. The driving assembly 220 is provided on a linear drive cylinder 221 on the gantry 110, and the telescopic end of the linear drive cylinder 221 is fixed to the mounting seat 210. The mounting seat 210 is driven to rise and fall on the gantry 110 by the telescopic linear drive cylinder 221. Furthermore, at least one guide rod 222 is also provided on the mounting seat 210, and the guide rod 222 is movably passed through the guide sleeve 111 fixed on the gantry 110 and connected to the limit plate 223. The guide rod 222 cooperates with the guide sleeve 111 to improve the stability of the mounting seat 210 during lifting and lowering. Preferably, two groups of guide rods 222 are provided, and are symmetrically arranged on the top surface of the mounting seat 210, so that the two sides of the mounting seat 210 are evenly stressed, further improving the stability.

[0023] Furthermore, the gantry 110 is provided with a sensor 112 for limiting the position of the mounting seat 210, which is used to sense whether the mounting seat 210 is in place when it moves downward, and the mounting seat 210 stops moving after it moves upward. The base 100 is also provided with an angle sensor for limiting the rotation angle of the lower die seat 330. When the lower die seat 330 rotates to a certain angle, the angle sensor senses whether the lower die seat 330 is rotated in place and whether it is aligned with the upper die seat 250.

[0024] It also includes an upper mold assembly 200, which is rotatably arranged on a mounting seat 210. The mounting seat 210 is driven to rise and fall by a driving assembly 220 arranged on the gantry 110. When the driving assembly 220 drives the mounting seat 210 to rise and fall, it drives the upper mold assembly 200 to rise and fall, and is pressed on the heat insulation cover or removed from the heat insulation cover. The upper mold assembly 200 can rotate relative to the mounting seat 210 to achieve circumferential rotation of the heat insulation cover, which is convenient for spot welding the periphery of the heat insulation cover. Specifically, the upper mold assembly 200 includes an upper mold seat 250, and the upper mold seat 250 is connected to the mounting seat 210 through a first bearing 260. The first bearing 260 is arranged to improve the stability of the upper mold assembly 200 during rotation, reduce the wear between the mounting seat 210 and the upper mold seat 250, and ensure smooth rotation. Further, a plurality of handles 331 are provided on the circumference of the lower mold seat 330, so that the lower mold assembly 300 can be rotated conveniently through the handles 331.

[0025] The upper mold assembly 200 further includes an upper positioning module 230 adapted to the shape of one side of the heat shield and upper skirt positioning modules 240 arranged on both sides of the upper positioning module 230. The upper positioning module 230 and the lower skirt positioning module 320 are arranged on the lower side of the upper mold base 250, and the upper mold base 250 supports the upper positioning module 230 and the upper skirt positioning module 240. The upper positioning module 230 can be configured as a plurality of dispersed upper positioning blocks. According to the shape distribution of the heat shield, the upper positioning blocks are provided with lower grooves adapted to the upper surface of the heat shield to press and limit the heat shield; the upper skirt positioning module 240 can also be configured as a plurality of dispersed skirt pressing blocks, which are dispersed on both sides of the upper positioning module 230 according to the shape of the heat shield to position and press the skirt of the heat shield. Preferably, a hollow structure is provided on the upper skirt positioning module 240, and the hollow structure corresponds to the spot welding area of ​​the heat insulation cover, that is, a spot welding operation position is reserved by the hollow structure, so that the spot welding operation on the heat insulation cover is convenient.

[0026] It also includes a lower mold assembly 300, which is rotatably arranged on the base 100, that is, both the upper mold assembly 200 and the lower mold assembly 300 can rotate. After the heat shield is placed between the upper mold assembly 200 and the lower mold assembly 300, the heat shield can be driven to rotate circumferentially by rotating the upper mold assembly 200 and the lower mold assembly 300, thereby facilitating welding of multiple welding positions around the heat shield. Specifically, the lower mold assembly 300 includes a lower mold seat 330, and the lower mold seat 330 is connected to the base 100 through a second bearing 340. The second bearing 340 is provided to improve the stability of the lower mold assembly 300 during rotation and reduce the wear between the lower mold seat 330 and the base 100. Furthermore, the base 100 is provided with a plurality of groups of support rollers 120 uniformly distributed circumferentially around the second bearing 340, and the support rollers 120 are rollingly matched with the lower mold assembly 300 to improve the stability of the lower mold assembly 300.

[0027] The lower mold assembly 300 also includes a lower positioning module 310 adapted to the shape of the other side of the heat insulation cover and lower skirt positioning modules 320 arranged on both sides of the lower positioning module 310. The lower positioning module 310 and the lower skirt positioning module 320 are arranged on the upper side of the lower mold base 330. The upper positioning module 230 cooperates with the lower positioning module 310 to position the heat insulation cover. The upper skirt positioning module 240 and the lower skirt positioning module 320 are used to press the skirt of the heat insulation cover.

[0028] The lower die base 330 supports the lower positioning module 310 and the lower skirt positioning module 320, wherein the lower positioning module 310 can be set as a plurality of dispersed lower positioning blocks, the lower positioning blocks are provided with upper grooves adapted to the lower surface of the heat shield, the heat shield is supported by the lower positioning blocks, and the heat shield is clamped and limited in position in cooperation with the upper positioning blocks; the lower skirt positioning module 320 can also be set as a plurality of skirt support blocks adapted to the skirt of the heat shield, the skirt of the heat shield is supported by the skirt support blocks, and the skirt of the heat shield is positioned and pressed in cooperation with the skirt pressing blocks. Preferably, a hollow structure is provided on the lower skirt positioning module 320, the hollow structure corresponds to the spot welding area of ​​the heat shield, and the hollow structure corresponds to the position of the hollow structure of the upper skirt positioning module 240, forming a spot welding area for the heat shield, making way for the spot welding operation.

[0029] In some embodiments, a lower angle positioning structure 350 is provided between the lower mold base 330 and the base 100, so as to facilitate the positioning of the angle of the upper mold assembly 200; an upper angle positioning structure 270 is provided between the upper mold base 250 and the mounting base 210, and is used to position the angle of the lower mold assembly 300; the lower angle positioning structure 350 cooperates with the upper angle positioning structure 270 to align the lower positioning module 310 with the upper positioning module 230, so as to avoid misalignment between the upper mold assembly 200 and the lower mold assembly 300, resulting in misalignment between the upper positioning module 230 and the lower positioning module 310 when the upper mold assembly 200 moves downward under the drive of the driving assembly 220, and the mold cannot be closed.

[0030] Specifically, the angle positioning structure includes at least one group of positioning marble structures. Preferably, the upper angle positioning structure 270 includes two groups of first positioning marble structures symmetrically distributed on both sides of the first bearing 260; the lower angle positioning structure 350 includes six groups of second positioning marble structures uniformly distributed around the second bearing 340, wherein two symmetrical groups of second positioning marble structures cooperate with two groups of first positioning marble structures to align the lower positioning module 310 with the upper positioning module 230. In this way, the six groups of second positioning marble structures can not only form a graduation structure for the rotation of the lower mold assembly 300, avoid excessive rotation when rotating the lower mold assembly 300 and the upper mold assembly 200, and leak welding when spot welding the heat shield; and the two symmetrically arranged groups of second positioning marble structures cooperate with two groups of first positioning marble structures to position the starting positions of the lower positioning module 310 and the upper positioning module 230, ensuring that the upper positioning module 230 is aligned with the lower positioning module 310 when assembling the heat shield.

[0031] The first positioning marble structure has the same structure as the second positioning marble structure. The positioning marble structure includes a positioning marble 271 and a positioning hole 272 matched with the positioning marble 271. The positioning marble 271 includes a mounting column. A slide groove is provided in the mounting column. A part of the marbles and an elastic element located in the slide groove are movably provided in the slide groove. The two ends of the elastic element are respectively fixed to the bottom wall of the slide groove and the marble. When the marble is under pressure, the elastic element contracts, and the marble slides toward the inside of the slide groove and slides out of the positioning hole. When not under pressure, the marble is clamped in the positioning hole under the resetting action of the elastic element. The positioning marble 271 of the first positioning marble structure is installed on the upper surface of the upper mold seat 250, and the positioning hole 272 is installed on the lower surface of the mounting seat 210; the positioning marble 271 of the second positioning marble structure is installed on the upper surface of the base 100, and the positioning hole 272 is installed on the lower surface of the lower mold seat 330. The angles of the upper die base 250 and the lower die base 330 are positioned by engaging the positioning marbles 271 with the positioning holes 272 .

[0032] When in use, the positioning marble 271 on the upper mold base 250 is engaged in the positioning hole 272 on the mounting base 210; then the position of the lower mold assembly 300 is adjusted, and the lower mold base 330 is rotated by the handle 331 so that the lower positioning module 310 corresponds to the upper positioning module 230. One of the positioning marbles 271 symmetrically arranged on the base 100 is engaged in the positioning hole 272 on the lower mold base 330 to position the lower mold base 330 and ensure stability. The heat insulation cover is placed on the lower positioning module 310, and the lower skirt positioning module 320 supports the heat insulation cover. The driving assembly 220 is started, and the linear driving cylinder 221 drives the mounting seat 210 to move downward. The mounting seat 210 drives the upper mold seat 250 to move downward, and then drives the upper positioning module 230 and the upper skirt positioning module 240 to press on the heat insulation cover. The upper positioning module 230 and the lower positioning module 310 clamp and position the heat insulation cover, and the upper skirt positioning module and the lower skirt positioning module tighten the skirt of the heat insulation cover. After that, spot welding is performed on the spot welding area of ​​the heat insulation cover. When the side of the heat insulation cover needs to be changed, the lower mold base 330 is driven to rotate by the handle 331. Under the push of external force, the positioning marbles 271 slide out of the positioning holes 272. When the lower mold base 330 rotates to a certain angle, another set of positioning marbles 271 symmetrically arranged on the base 100 are engaged in the positioning holes 272 on the lower mold base 330 to limit the position, and the heat insulation cover is spot welded. The operation is cyclic until the heat insulation cover rotates one circle and the periphery of the heat insulation cover is completely spot welded.

[0033] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0034] The above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A heat shield spot welding positioning device, characterized in that: include: A base (100) on which a gantry (110) is provided; An upper mold assembly (200) is rotatably mounted on a mounting seat (210), the mounting seat (210) being driven to rise and fall by a driving assembly (220) mounted on a gantry (110), the upper mold assembly (200) comprising an upper positioning module (230) adapted to the shape of one side of the heat insulation cover and upper skirt positioning modules (240) mounted on both sides of the upper positioning module (230); A lower mold assembly (300) is rotatably disposed on the base (100), the lower mold assembly (300) comprising a lower positioning module (310) adapted to the shape of the other side of the heat insulation cover and lower skirt positioning modules (320) disposed on both sides of the lower positioning module (310); The upper positioning module (230) and the lower positioning module (310) cooperate to position the heat insulation cover, and the upper skirt positioning module (240) and the lower skirt positioning module (320) are used to press the skirt of the heat insulation cover.

2. The heat shield spot welding positioning device according to claim 1, characterized in that: The upper die assembly (200) comprises an upper die seat (250), the upper die seat (250) is connected to the mounting seat (210) via a first bearing (260), and the upper positioning module (230) and the lower skirt positioning module (320) are arranged on the lower side of the upper die seat (250); the lower die assembly (300) comprises a lower die seat (330), the lower die seat (330) is connected to the base (100) via a second bearing (340), and the lower positioning module (310) and the lower skirt positioning module (320) are arranged on the upper side of the lower die seat (330).

3. The heat shield spot welding positioning device according to claim 2, characterized in that: A lower angle positioning structure (350) is provided between the lower die seat (330) and the base (100), and an upper angle positioning structure (270) is provided between the upper die seat (250) and the mounting seat (210). The lower angle positioning structure (350) cooperates with the upper angle positioning structure (270) to align the lower positioning module (310) with the upper positioning module (230).

4. The heat shield spot welding positioning device according to claim 3, characterized in that: The angle positioning structure includes at least one group of positioning marble structures, wherein the positioning marble structure includes a positioning marble (271) fixed on the upper mold base (250) and / or the base (100), and a positioning hole (272) provided on the mounting base (210) and / or the lower mold base (330) for cooperating with the positioning marble (271).

5. The heat shield spot welding positioning device according to claim 3, characterized in that: The upper angle positioning structure (270) includes two groups of first positioning marble structures symmetrically distributed on both sides of the first bearing (260); the lower angle positioning structure (350) includes six groups of second positioning marble structures evenly distributed around the second bearing (340), wherein the two symmetrical groups of second positioning marble structures cooperate with the two groups of first positioning marble structures to align the lower positioning module (310) with the lower positioning module (310).

6. The heat shield spot welding positioning device according to claim 1, characterized in that: The driving assembly (220) comprises a linear driving cylinder (221) arranged on the gantry (110), and a telescopic end of the linear driving cylinder (221) is fixed to a mounting seat (210).

7. The heat shield spot welding positioning device according to claim 6, characterized in that: At least one guide rod (222) is also provided on the mounting seat (210), and the guide rod (222) movably passes through a guide sleeve (111) fixed on the gantry (110) and is connected to a limit plate (223).

8. The heat shield spot welding positioning device according to claim 1, characterized in that: The upper skirt positioning module (240) and the lower skirt positioning module (320) are both provided with a hollow structure, and the hollow structure corresponds to the spot welding area of ​​the heat insulation cover.

9. The heat shield spot welding positioning device according to claim 1, characterized in that: The gantry (110) is provided with a sensor (112) for limiting the downward movement position of the mounting seat (210).

10. The heat shield spot welding positioning device according to claim 2, characterized in that: The base (100) is provided with a plurality of groups of support rollers (120) evenly distributed in the circumferential direction around the second bearing (340), and the support rollers (120) are in rolling cooperation with the lower mold assembly (300).

Images