An arc welding fixture for automotive parts

Abstract

This utility model relates to the field of automotive parts welding technology, specifically an arc welding fixture for automotive parts, including a base, a bracket mounted on the base, and a main positioning mechanism, a first positioning mechanism, a second positioning mechanism, and a third positioning mechanism mounted on the bracket. The main positioning mechanism is used to position the upper housing, the first positioning mechanism is used to abut the first L-shaped assembly plate against the upper housing, the second positioning mechanism is used to abut the second L-shaped assembly plate against the upper housing, and the third positioning mechanism is used to abut the water pipe against the upper housing. The placement groove facilitates easy handling and saves on disassembly costs. This utility model can automatically abut the first L-shaped assembly plate, the second L-shaped assembly plate, and the water pipe against the outer circumference of the upper housing, avoiding the problem of inconsistent assembly accuracy caused by manual welding, and ensuring the assembly efficiency and quality of the thermostat assembly.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts welding technology, specifically to an arc welding fixture for automotive parts. Background Technology

[0002] Thermostat assemblies are used in automotive engine cooling systems. Thermostat assemblies are mainly used to regulate the temperature of the automotive engine during operation. Traditional thermostat assemblies mainly consist of an outer shell and a thermostat inside the outer shell. The outer shell mainly includes an upper shell 101 and a lower shell. Most existing upper shells 101 are made of plastic. However, plastic shells are prone to corrosion and aging under long-term high-temperature environments, which can cause the thermostat regulating ball valve to jam or leak, leading to engine overheating or abnormal water temperature failure. Therefore, metal shells, especially aluminum alloys, are gradually replacing existing plastic shells due to their excellent thermal shock resistance, which can withstand temperatures above 120°C.

[0003] like Figure 1 As shown, the upper housing 101 of existing thermostat assemblies is mostly funnel-shaped, with the small end cast and having an end cap mounting port 102. The outer circumferential surface needs to be welded with L-shaped assembly plate one 103, L-shaped assembly plate two 104 and water pipe connector 105. However, in the actual welding process, due to the lack of a dedicated welding fixture for the upper housing 101, and the fact that the outer circumferential surface of the upper housing 101 is an irregularly shaped funnel, the L-shaped assembly plate one 103, L-shaped assembly plate two 104 and water pipe connector 105 mostly need to be manually welded one by one to the outer circumferential surface of the upper housing 101 by workers. This not only easily leads to problems with inconsistent assembly accuracy, but also reduces the assembly efficiency and quality of the thermostat assembly. Therefore, the existing technology needs to be improved. Utility Model Content

[0004] The purpose of this utility model is to address the above-mentioned shortcomings by providing an arc welding fixture for automotive parts, which can automatically press the L-shaped assembly plate one, the L-shaped assembly plate two, and the water pipe against the outer circumferential surface of the upper housing, avoiding the problem of inconsistent assembly accuracy caused by manual pressing during welding, and ensuring the assembly efficiency and quality of the thermostat assembly.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] An arc welding fixture for automotive parts includes a base, a bracket disposed on the base, and a main positioning mechanism, a first positioning mechanism, a second positioning mechanism, and a third positioning mechanism mounted on the bracket. The main positioning mechanism is used to position an upper housing, the first positioning mechanism is used to abut an L-shaped assembly plate against the upper housing, the second positioning mechanism is used to abut an L-shaped assembly plate against the upper housing, and the third positioning mechanism is used to abut a water pipe against the upper housing.

[0007] Furthermore, the end cap mounting opening of the upper housing is provided with three internal threaded holes, which are arranged in a triangle. The main positioning mechanism includes an inclined lower abutment plate, a lower abutment cylinder for driving the lower abutment plate to rise or fall, a lower connecting frame for mounting the lower abutment cylinder on the base, and an upper abutment plate located above the lower abutment plate for driving the upper abutment plate to rise or fall. The upper abutment cylinder is fixed on the bracket. A lower abutment platform is fixed on the lower abutment plate. The shape of the lower abutment platform is adapted to the large end of the upper housing. An internal threaded hole is provided on the upper abutment plate opposite the three internal threaded holes, and the internal threaded holes are connected by bolts.

[0008] Furthermore, both positioning mechanism one and positioning mechanism two include a plate positioning cylinder fixed on the bracket, a plate fixing seat fixed on the piston rod head of the plate positioning cylinder, a plate clamping cylinder, a connecting rod seat, and an L-shaped fixing chuck fixed on the plate fixing seat, a connecting rod rotatably connected to the connecting rod seat at one end, a piston rod seat fixed on the piston rod head of the plate clamping cylinder, an L-shaped clamping block rotatably connected to the piston rod seat in the middle via a rotating shaft, a fixing clamping block fixed on the L-shaped fixing chuck, a longitudinal part of the L-shaped clamping block rotatably connected to the connecting rod one, and a movable clamping block fixed on the transverse part, the connecting rod one and the L-shaped clamping block being arranged in a Z-shape, a movable clamping block fixed on the connecting rod two, and the fixing clamping block facing the movable clamping block when the piston rod head of the plate clamping cylinder is in the extended state.

[0009] Furthermore, the positioning mechanism three includes a tube positioning cylinder fixed on the bracket. One end of the piston rod of the tube positioning cylinder is driven to be connected to a tube seat, and the other end of the tube seat is provided with an annular groove.

[0010] Furthermore, an abutment block is fixed on the lower abutment platform.

[0011] The beneficial effects of this utility model are:

[0012] In practical applications, the upper housing is fixed by the main positioning mechanism, positioning mechanism one holds the L-shaped assembly plate one against the upper housing, positioning mechanism two holds the L-shaped assembly plate two against the upper housing, and positioning mechanism three holds the water pipe against the upper housing. Then, an external welding torch can be used to weld the L-shaped assembly plate one, L-shaped assembly plate two, and water pipe. This utility model can automatically hold the L-shaped assembly plate one, L-shaped assembly plate two, and water pipe against the outer circumference of the upper housing, avoiding the problem of inconsistent assembly accuracy caused by manual welding, and ensuring the assembly efficiency and quality of the thermostat assembly. Attached Figure Description

[0013] Figure 1This is a schematic diagram of the upper shell structure in this utility model;

[0014] Figure 2 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 3 This is the front view of this utility model;

[0016] Figure 4 This is a schematic diagram of the main positioning mechanism in this utility model;

[0017] Figure 5 This is a schematic diagram of the main positioning mechanism and the upper shell in this utility model;

[0018] Figure 6 This is a structural schematic diagram of the positioning mechanism one in this utility model;

[0019] Figure 7 This is a schematic diagram of the positioning mechanism three in this utility model;

[0020] Reference numerals: Upper housing 101; End cap mounting port 102; Internal threaded hole one 1021; L-shaped assembly plate one 103; L-shaped assembly plate two 104; Water pipe connector 105;

[0021] 1. Base; 2. Bracket; 3. Main positioning mechanism; 3. Lower abutment plate; 31. Lower abutment cylinder; 32. Lower connecting frame; 33. Upper abutment plate; 34. Internal threaded hole 2; 341. Upper abutment cylinder; 35. Lower abutment platform; 36. Bolt; 37. Abutment block; 38. Positioning mechanism 1; 4. Plate positioning cylinder; 41. Plate fixing seat; 42. Plate clamping cylinder; 43. Connecting rod seat; 44. L-shaped fixing chuck; 45. Fixing clamp block; 451. Connecting rod; 46. Plug rod seat; 47. Rotating shaft; 48. L-shaped clamp block; 49. Movable clamp block; 491. Positioning mechanism 2; 5. Positioning mechanism 3; 6. Pipe positioning cylinder; 61. Pipe seat; 62. Annular groove; 621. Detailed Implementation

[0022] like Figure 1-7 As shown, an arc welding fixture for automotive parts includes a base 1, a bracket 2 disposed on the base 1, and a main positioning mechanism 3, a first positioning mechanism 4, a second positioning mechanism 5, and a third positioning mechanism 6 mounted on the bracket 2. The main positioning mechanism 3 is used to position the upper housing 101, the first positioning mechanism 4 is used to abut the L-shaped assembly plate 103 against the upper housing 101, the second positioning mechanism 5 is used to abut the L-shaped assembly plate 104 against the upper housing 101, and the third positioning mechanism 6 is used to abut the water pipe against the upper housing 101.

[0023] In use, the upper housing 101 is fixed by the main positioning mechanism 3, the positioning mechanism 4 abuts the L-shaped assembly plate 103 against the upper housing 101, the positioning mechanism 5 abuts the L-shaped assembly plate 104 against the upper housing 101, and the positioning mechanism 6 abuts the water pipe against the upper housing 101. Then, an external welding gun can be used to weld the L-shaped assembly plate 103, the L-shaped assembly plate 104 and the water pipe. This utility model can automatically abut the L-shaped assembly plate 103, the L-shaped assembly plate 104 and the water pipe against the outer circumference of the upper housing 101, avoiding the problem of inconsistent assembly accuracy caused by manual welding, and ensuring the assembly efficiency and quality of the thermostat assembly.

[0024] like Figure 1-7 As shown, the end cap mounting opening 102 of the upper housing 101 is provided with three internal threaded holes 1021, which are arranged in a triangle. The main body positioning mechanism 3 includes an inclined lower abutment plate 31, a lower abutment cylinder 32 for driving the lower abutment plate 31 to rise or fall, a lower connecting frame 33 for mounting the lower abutment cylinder 32 on the base 1, an upper abutment plate 34 disposed above the lower abutment plate 31, and an upper abutment cylinder 35 for driving the upper abutment plate 34 to rise or fall. The upper abutment cylinder 35 is fixed on the bracket 2. A lower abutment platform 36 is fixed on the lower abutment plate 31, and the shape of the lower abutment platform 36 is adapted to the large opening end of the upper housing 101. The upper abutment plate 34 has three internal threaded holes 1021 facing each other, and internal threaded holes 1021 and 341 are connected by bolts 37. In this embodiment, during use, the large end of the upper housing 101 faces downwards and directly onto the lower abutment platform 36. The upper housing 101 is placed on the lower abutment plate 31. The lower abutment cylinder 32 drives the lower abutment plate 31 to rise, and the upper abutment cylinder 35 drives the upper abutment plate 34 to fall. When the end cap mounting port 102 of the upper housing 101 abuts against the upper abutment plate 34, the lower abutment cylinder 32 and the upper abutment cylinder 35 stop driving. The positioning and fixing of the upper housing 101 can be completed by connecting the corresponding internal threaded holes 1021 and 341 with three bolts 37 respectively.

[0025] like Figure 1-7As shown, both positioning mechanism 4 and positioning mechanism 5 include a plate positioning cylinder 41 fixed on the bracket 2, a plate fixing seat 42 fixed on the piston rod head of the plate positioning cylinder 41, a plate clamping cylinder 43, a connecting rod seat 44, and an L-shaped fixing chuck 45 fixed on the plate fixing seat 42, a connecting rod 46 rotatably connected to the connecting rod seat 44 at one end, a piston rod seat 47 fixed on the piston rod head of the plate clamping cylinder 43, and an L-shaped clamping block 49 rotatably connected to the piston rod seat 47 in the middle via a rotating shaft 48. A fixing block 451 is fixed on the L-shaped fixing chuck 45. The longitudinal part of the L-shaped clamping block 49 is rotatably connected to the connecting rod 46, and the transverse part is fixed with a movable clamping block 491. The connecting rod 46 and the L-shaped clamping block 49 are arranged in a Z-shape. A movable clamping block 491 is fixed on the connecting rod 46. When the piston rod of the clamping cylinder 43 is extended, the fixed clamping block 451 is positioned directly opposite the movable clamping block 491. In this embodiment, the plate positioning cylinder 41 drives the plate fixing seat 42 away from the upper housing 101, and the horizontal part of the L-shaped assembly plate 103 or L-shaped assembly plate 2 104 is placed between the fixed clamping block 451 and the movable clamping block 491. The piston rod of the clamping cylinder 43 extends, and the horizontal part of the L-shaped assembly plate 103 or L-shaped assembly plate 2 104 is clamped between the fixed clamping block 451 and the movable clamping block 491. The plate positioning cylinder 41 drives the plate fixing seat 42 closer to the upper housing 101, and the vertical part of the L-shaped assembly plate 103 or L-shaped assembly plate 2 104 is pressed against the upper housing 101. Then, an external welding torch can be used to weld the vertical parts of the L-shaped assembly plate 103 and L-shaped assembly plate 2 104.

[0026] like Figure 1-7 As shown, the positioning mechanism 6 includes a pipe positioning cylinder 61 fixed on the bracket 2. The piston rod of the pipe positioning cylinder 61 is driven to connect one end of a pipe seat 62. The other end of the pipe seat 62 is provided with an annular groove 621. In this embodiment, when in use, one end of the water pipe connector 105 is inserted into the annular groove 621, and the pipe positioning cylinder 61 drives the pipe seat 62 to move, so that the other end of the water pipe connector 105 abuts against the upper housing 101, and welding can then be performed.

[0027] like Figure 1-7 As shown, an abutment block 38 is fixed on the lower abutment platform 36; in this embodiment, the pipe positioning cylinder 61 drives the pipe seat 62 to move, so that when the other end of the water pipe connector 105 abuts against the upper housing 101, the abutment block 38 is set directly opposite the annular groove 621 to prevent the water pipe connector 105 from damaging the upper housing 101.

[0028] It also includes a PLC controller. The main positioning mechanism 3, positioning mechanism one 4, positioning mechanism two 5 and positioning mechanism three 6 are all electrically connected to the controller. The main positioning mechanism 3, positioning mechanism one 4, positioning mechanism two 5 and positioning mechanism three 6 can be controlled by the PLC controller.

[0029] The specific embodiments described herein are merely illustrative examples of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to replace them, without departing from the scope defined by this utility model.

Claims

1. An arc welding fixture for automotive parts, characterized in that: Includes a base (1), a bracket (2) disposed on the base (1), a main positioning mechanism (3), a positioning mechanism one (4), a positioning mechanism two (5) and a positioning mechanism three (6) mounted on the bracket (2). The main positioning mechanism (3) is used to position the upper housing (101), the positioning mechanism one (4) is used to press the L-shaped assembly plate one (103) against the upper housing (101), the positioning mechanism two (5) is used to press the L-shaped assembly plate two (104) against the upper housing (101), and the positioning mechanism three (6) is used to press the water pipe against the upper housing (101).

2. The arc welding fixture for automotive parts as claimed in claim 1 wherein, The upper housing (101) has three internal threaded holes (1021) on its end cap mounting port (102), which are arranged in a triangular pattern. The main body positioning mechanism (3) includes an inclined lower abutment plate (31), a lower abutment cylinder (32) for driving the lower abutment plate (31) to rise or fall, a lower connecting frame (33) for mounting the lower abutment cylinder (32) on the base (1), and an upper abutment plate (34) located above the lower abutment plate (31) for... An upper abutment cylinder (35) is used to drive the upper abutment plate (34) to rise or fall. The upper abutment cylinder (35) is fixed on the bracket (2). A lower abutment platform (36) is fixed on the lower abutment plate (31). The shape of the lower abutment platform (36) is adapted to the large end of the upper shell (101). An internal thread hole (341) is provided on the upper abutment plate (34) opposite to the three internal thread holes one (1021). The internal thread holes one (1021) and the internal thread holes two (341) are connected by bolts (37).

3. The arc welding fixture for automotive parts as claimed in claim 1 wherein, Both positioning mechanism one (4) and positioning mechanism two (5) include a plate positioning cylinder (41) fixed on the bracket (2), a plate fixing seat (42) fixed on the piston rod head of the plate positioning cylinder (41), a plate clamping cylinder (43), a connecting rod seat (44) and an L-shaped fixing chuck (45) fixed on the plate fixing seat (42), a connecting rod (46) rotatably connected to the connecting rod seat (44) at one end, a piston rod seat (47) fixed on the piston rod head of the plate clamping cylinder (43), and a connecting rod (46) rotatably connected to the connecting rod seat (44) at the middle via a rotating shaft (48). The L-shaped clamping block (49) of the piston rod seat (47) is connected to the L-shaped fixed clamp (45), and a fixed clamping block (451) is fixed on the L-shaped fixed clamp (45). The longitudinal part of the L-shaped clamping block (49) is rotatably connected to the connecting rod (46) one, and a movable clamping block (491) is fixed on the transverse part. The connecting rod (46) one and the L-shaped clamping block (49) are arranged in a Z-shape. A movable clamping block (491) is fixed on the connecting rod (46) two. When the piston rod head of the plate clamping cylinder (43) is in the extended state, the fixed clamping block (451) is set directly opposite the movable clamping block (491).

4. The arc welding fixture for automotive parts as claimed in claim 2 wherein, The positioning mechanism three (6) comprises a tube positioning cylinder (61) fixed on the support (2), one end of a piston rod head of the tube positioning cylinder (61) is drivingly connected with a tube seat (62), and the other end of the tube seat (62) is provided with an annular groove (621).

5. The arc welding fixture for automotive parts as claimed in claim 4 wherein, The lower abutting table (36) is fixed with an abutting block (38).

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