Automobile auxiliary instrument desk hot plate welding tool and hot plate welding method

Abstract

The invention discloses an automobile auxiliary instrument desk hot plate welding tool and a hot plate welding method.The automobile auxiliary instrument desk hot plate welding tool comprises a lower cold mold tool, an upper cold mold tool and a middle hot mold tool, the lower cold mold tool and the upper cold mold tool are assembled with the middle hot mold tool to achieve hot melting, and the lower cold mold tool and the upper cold mold tool are assembled to achieve welding; a first upper hot copper mold, a second upper hot copper mold, a first lower hot copper mold and a second lower hot copper mold which are electrically heated are driven by a middle hot mold tool to be heated to the melting point temperature of a central channel body and a right side plate, the temperature is kept, and then a lower cold mold tool, the middle hot mold tool and an upper cold mold tool are positioned and clamped so that a welding area can be rapidly melted; after the middle hot die tool is quickly withdrawn, the lower cold die tool and the upper cold die tool are quickly jointed and cooled under a certain pressure; the problems that the area of a welding area on the YOZ face of a product is large, and the requirements for welding precision and welding quality are high are solved.

Description

Technical Field

[0001] This invention belongs to the field of welding technology. Specifically, this invention relates to welding fixtures and methods for welding hot plates on automotive sub-dashboards. Background Technology

[0002] The automotive sub-dashboard is welded together from the central tunnel body 1-1, the left side panel 1-2, and the right side panel 1-3. However, the automotive sub-dashboard has a complex structure, and the traditional direct hot plate welding process has the following problems: The small X-axis dimension and large Y-axis dimension of the automotive sub-dashboard result in a large Y-axis dimension for the welded product and a large welding area on the YOZ surface, which places high demands on welding precision and quality.

[0003] The welding surface is the YOZ plane, and the product mounting surface is the XOY plane. The welding surface and the product mounting surface are at 90°. The fixing method of the central channel body is slightly different, which directly affects the welding accuracy and welding quality. Summary of the Invention

[0004] This invention provides a welding fixture and a welding method for a hot plate on an automotive sub-dashboard, in order to solve the technical problems existing in the background art.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows: a welding fixture for a hot plate of an automotive sub-dashboard, comprising a lower cold mold fixture, an upper cold mold fixture, and a middle hot mold fixture, wherein the lower cold mold fixture and the upper cold mold fixture are respectively joined with the middle hot mold fixture to achieve heat fusion, and the lower cold mold fixture and the upper cold mold fixture are joined together to achieve welding.

[0006] Preferably, the lower cooling mold fixture includes a lower cooling base plate, a flipping mechanism, a pneumatic slide table, and a lower tire module. The lower cooling base plate is provided with a plurality of limiting guide posts. The flipping mechanism is fastened to the lower cooling base plate, the pneumatic slide table is fastened to the lower cooling base plate, and the lower tire module is fastened to the flipping mechanism.

[0007] Preferably, the flipping mechanism includes a lower support plate, a lower support, a first guide rail bracket, a flipping cylinder seat, a flipping cylinder, a T-shaped connecting buckle, a flat plate, a rack, a slider, and a rotating shaft. The lower support plate, the lower support, and the first guide rail bracket are respectively fastened to the lower cooling plate. The first guide rail bracket is provided with a first guide rail. The cylinder body of the flipping cylinder is fastened to the lower support plate through the flipping cylinder seat. The piston rod of the flipping cylinder is connected to the flat plate through the T-shaped connecting buckle. The rack is fastened to the upper end of the flat plate. The lower end of the flat plate is provided with a slider, and the slider is slidably connected to the first guide rail. The rotating shaft is rotatably connected to the lower support. The end of the rotating shaft is provided with a gear, and the gear meshes with the rack. The lower support plate is provided with a rotating positioning membrane.

[0008] Preferably, the pneumatic slide table includes a second guide rail bracket, a slide table cylinder, an L-shaped connecting buckle, a T-shaped connecting rod, a first slide table bracket, a second slide table bracket, a third slide table bracket, and a transverse diaphragm assembly. The second guide rail bracket is provided with a second guide rail. The cylinder body of the slide table cylinder is fastened to the lower support plate. The piston rod of the slide table cylinder is connected to the T-shaped connecting rod through the L-shaped connecting buckle. The T-shaped connecting rod is fastened to the first slide table bracket. The second slide table bracket is fastened to the first slide table bracket. The third slide table bracket is fastened to both the first and second slide table brackets. The transverse diaphragm assembly is fastened to the second slide table bracket.

[0009] Preferably, a front limiting bracket is provided on the front side of the upper slide bracket of the lower support plate, and a front buffer limiting sensor and a front hard limiter are provided on the front limiting bracket; a rear limiting bracket is provided on the rear side of the upper slide bracket of the lower support plate, and a rear buffer limiting sensor and a rear hard limiter are provided on the rear limiting bracket.

[0010] Preferably, the transverse displacement membrane assembly includes transverse displacement membrane one, transverse displacement membrane two, transverse displacement membrane three, transverse displacement membrane four, transverse displacement membrane five and transverse displacement membrane six, and each is securely connected to the slide support two.

[0011] Preferably, the lower tire mold assembly includes a rotating plate, tire mold 1, tire mold 2, tire mold 3, tire mold 4, tire mold 5, tire mold 6, tire mold 7, tire mold 8, tire mold 9, tire mold 10, tire mold 11, tire mold 12, tire mold 13, tire mold 14, tire mold 15, tire mold 16, tire mold 17, and tire mold 18. Tire mold 1, tire mold 2, tire mold 3, tire mold 4, tire mold 5, tire mold 6, tire mold 7, tire mold 8, tire mold 9, tire mold 10, tire mold 11, tire mold 12, tire mold 13, tire mold 14, tire mold 15, tire mold 16, tire mold 17, and tire mold 18 are respectively fastened to the rotating plate. Tire mold 5 and tire mold 1 are each provided with a positioning cylinder 1, and the piston rod end of the positioning cylinder 1 is provided with a positioning pin 1. Tire mold 7 and tire mold 8 are each provided with a positioning cylinder 2, and the piston rod end of the positioning cylinder 2 is provided with a positioning pin 2.

[0012] Preferably, the upper cooling mold fixture includes an upper cooling base plate, an upper cooling support, an upper cooling module, suction cups, a first pressing cylinder, a second pressing cylinder, a third pressing cylinder, a first clamping cylinder, and a second clamping cylinder. The upper cooling base plate is provided with multiple limiting guide sleeves. The upper cooling support is fastened to the upper cooling base plate. The upper cooling module is fastened to the upper cooling support. Multiple suction cups are embedded within the upper cooling module. The first pressing cylinder, the second pressing cylinder, the third pressing cylinder, the first clamping cylinder, and the second clamping cylinder are respectively fastened to the upper cooling support. The piston rod end of the first pressing cylinder is provided with a first pressing frame. The piston rod end of the second pressing cylinder is provided with a second pressing frame. The piston rod end of the third pressing cylinder is provided with a third pressing frame. The piston rod end of the first clamping cylinder is provided with a first clamping hook. The piston rod end of the second clamping cylinder is provided with a second clamping hook.

[0013] Preferably, the intermediate heating mold tooling includes a heating base plate, an upper pad plate, an upper heating copper mold one, an upper heating copper mold two, a lower pad plate, a lower heating copper mold one, and a lower heating copper mold two. The upper pad plate is fastened to the upper end face of the heating base plate. The upper heating copper mold one and the upper heating copper mold two are respectively fastened to the upper pad plate. The lower pad plate is fastened to the lower end face of the heating base plate. The lower heating copper mold one and the lower heating copper mold two are respectively fastened to the lower pad plate.

[0014] The hot plate welding method of the automotive sub-dashboard hot plate welding fixture specifically includes the following steps: Step S1: Central channel body loading operation, the central channel body is placed in the lower cold mold fixture, and then supported by the lower mold assembly, and the positioning cylinder one drives the positioning pin one to extend and position, the positioning cylinder two drives the positioning pin two to extend and position, and then the flipping mechanism in the lower cold mold fixture drives the central channel body to rotate 90° counterclockwise. Step S2: Right side plate loading operation. Place the right side plate into the upper cold mold fixture. It is first attracted by multiple suction cups. Then, the first pressing cylinder drives the first pressing frame, the second pressing cylinder drives the second pressing frame, and the third pressing cylinder drives the third pressing frame to press the edge of the right side plate respectively. Then, the first clamping cylinder drives the first clamping hook, and the second clamping cylinder drives the second clamping hook to clamp the square hole on the right side plate respectively.

[0015] Step S3: Hot melting operation. The middle hot mold fixture moves between the lower cold mold fixture and the upper cold mold fixture. Then the lower cold mold fixture and the upper cold mold fixture move synchronously. The lower cold mold fixture moves upward with the central channel body and contacts the lower hot copper mold one and the lower hot copper mold two to hot melt and weld the ribs. The upper cold mold fixture moves downward with the right side plate and contacts the upper hot copper mold one and the upper hot copper mold two to hot melt and weld the ribs. Then the lower cold mold fixture moves downward with the central channel body to the original position, the upper cold mold fixture moves upward with the right side plate to the original position, and the middle hot mold fixture moves to the original position. Step S4: Welding operation. The lower cold mold fixture and the upper cold mold fixture move synchronously. The lower cold mold fixture moves upward with the molten central channel body, and the upper cold mold fixture moves downward with the right side plate until the mold is closed and the welding is completed.

[0016] The beneficial effects of adopting the above technical solutions are: 1. The automotive sub-dashboard hot plate welding fixture of the present invention uses an intermediate heating mold fixture to heat the upper heating copper mold 1, upper heating copper mold 2, lower heating copper mold 1, and lower heating copper mold 2 to the melting point temperature of the central channel body and the right side plate, and maintains this temperature. Then, the lower cooling mold fixture, intermediate heating mold fixture, and upper cooling mold fixture are positioned and clamped to make the welding area melt quickly. After the intermediate heating mold fixture is quickly removed, the lower cooling mold fixture and upper cooling mold fixture are quickly joined and cooled under a certain pressure. This solves the problem of large welding area on the YOZ surface of the product and high requirements for welding precision and welding quality.

[0017] The automotive sub-dashboard hot plate welding fixture of the present invention achieves the switching of the welding surface of the central channel body in the YOZ and XOY coordinate systems through a flipping mechanism, and ensures the positioning stability of the central channel body by rotating the tire film and the lower tire module, thus ensuring welding accuracy and welding quality. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the central channel body structure of the present invention; Figure 2 This is a schematic diagram of the left and right side plates of the present invention; Figure 3 This is an assembly drawing of the lower cold mold tooling of the present invention; Figure 4 This is a top view of the lower cold mold tooling of the present invention; Figure 5 This is an assembly diagram of the flipping mechanism of the present invention; Figure 6 The pneumatic slide assembly of the present invention Figure 1 ; Figure 7 The pneumatic slide assembly of the present invention Figure 2 ; Figure 8 This is an assembly diagram of the lower tire module of the present invention; Figure 9 This is a top view of the lower tire module of the present invention; Figure 10 It is the assembly drawing of the upper cold mold tooling; Figure 11 This is a diagram showing the clamping and positioning of the right side plate; Figure 12 This is an assembly drawing of the material clamping cylinder and the clamping hook; Figure 13 This is the assembly drawing of the material clamping cylinder 2 and the clamping hook 2; Figure 14 This is an assembly drawing of the hot plate, upper pad, upper hot copper mold one, and upper hot copper mold two; Figure 15 This is an assembly drawing of the hot plate, the lower pad, the lower hot copper mold 1, and the lower hot copper mold 2. Figure 16 This is a schematic diagram of steps S1 and S2 of the hot plate welding method for the automotive sub-dashboard hot plate welding fixture. Figure 17 This is a schematic diagram of step S3 of the hot plate welding method for the automotive sub-dashboard hot plate welding fixture; Figure 18 This is a schematic diagram of step S4 of the hot plate welding method for the automotive sub-dashboard hot plate welding fixture.

[0019] in: 1-1. Central aisle body; 1-2. Left side panel; 1-3. Right side panel; 1. Lower cold mold fixture; 2. Upper cold mold fixture; 3. Middle hot mold fixture; 10. Lower cooling substrate; 10-1. Limiting guide post; 11. Tilting mechanism; 11-1. Lower support plate; 11-2. Lower support; 11-3. Guide rail bracket one; 11-30. Guide rail one; 11-4. Tilting cylinder seat; 11-5. Tilting cylinder; 11-6. T-shaped connecting buckle; 11-7. Flat plate; 11-70. Slider; 11-8. Rack; 11-9. Rotating shaft; 11-90. Gear; 100. Rotating position diaphragm; 12. Pneumatic slide table; 12-1. Guide rail bracket two; 12-10. Guide rail two; 12-2. Slide table cylinder; 12-3. L-shaped connecting buckle; 12-4. T-shaped connecting rod; 12-5. Slide table bracket one; 12-6. Slide table bracket two; 12-7. Slide table bracket three; 12-8. Lateral shifting mold assembly; 120. Lateral shifting mold one; 121. Lateral shifting mold two; 122. Lateral shifting mold three; 123. Lateral shifting mold four; 124. Lateral shifting mold five; 125. Lateral shifting mold six; 1200. Front limit bracket; 1201. Front buffer limit sensor; 1202. Front hard limiter; 1203. Rear limit bracket; 1204. Rear buffer limit sensor; 1205. Rear hard limiter; 13. Lower tire mold assembly; 13-1. Rotating plate; 13-2. Tire mold one; 13-3. Tire mold two; 13-4. Tire mold three; 13-5. Tire mold four; 13-6. Tire mold five; 13-7. Tire mold six; 13-8. Tire mold seven; 13-9. Tire mold eight; 13-10. Tire mold nine; 13-11. Tire mold ten; 13-12. Tire mold eleven; 13-13. Tire mold twelve; 13-14. Tire mold thirteen; 13-15. Tire mold fourteen; 13-16. Tire mold fifteen; 13-17. Tire mold sixteen; 13-18. Tire mold seventeen; 13-19. Tire mold eighteen; 130. Positioning cylinder one; 131. Positioning pin one; 132. Positioning cylinder two; 133. Positioning pin two; 20. Upper cooling substrate; 20-1. Limiting guide sleeve one; 21. Upper cooling bracket; 22. Upper cooling module; 23. Suction cup; 24. Material pressing cylinder one; 24-1. Material pressing frame one; 25. Material pressing cylinder two; 25-1. Material pressing frame two; 26. Material pressing cylinder three; 26-1. Material pressing frame three; 27. Material clamping cylinder one; 27-1. Clamping hook one; 28. Material clamping cylinder two; 28-1. Clamping hook two; 30. Upper heating substrate; 30-1. Limiting guide sleeve 2; 31. Upper pad; 32. Upper heating copper mold 1; 33. Upper heating copper mold 2; 34. Lower pad; 34-1. Limiting guide sleeve 3; 35. Lower heating copper mold 1; 36. Lower heating copper mold 2. Detailed Implementation

[0020] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings, in order to help those skilled in the art to have a more complete, accurate and in-depth understanding of the concept and technical solutions of the present invention, and to facilitate its implementation.

[0021] like Figures 1 to 18 As shown, the automotive sub-dashboard hot plate welding fixture and hot plate welding method of the present invention heats the central channel body 1-1 and the right side plate 1-3 to the melting point temperature by using the intermediate heating mold fixture 3 to carry the electrically heated upper heating copper mold 1 32, upper heating copper mold 2 33, lower heating copper mold 1 35, and lower heating copper mold 2 36, and maintains this temperature. Then, the lower cooling mold fixture 1, intermediate heating mold fixture 3, and upper cooling mold fixture 2 are positioned and clamped to make the welding area melt quickly. After the intermediate heating mold fixture 3 is quickly removed, the lower cooling mold fixture 1 and upper cooling mold fixture 2 are quickly joined and cooled under a certain pressure. This solves the problem of the large welding area on the YOZ surface of the product and the high requirements for welding accuracy and welding quality.

[0022] Specifically, such as Figures 1 to 15 As shown, it includes a lower cold mold fixture 1, an upper cold mold fixture 2, and a middle hot mold fixture 3. The lower cold mold fixture 1 and the upper cold mold fixture 2 are respectively joined with the middle hot mold fixture 3 to achieve heat fusion, and the lower cold mold fixture 1 and the upper cold mold fixture 2 are joined to achieve welding.

[0023] The lower cooling mold tooling 1 includes a lower cooling base plate 10, a flipping mechanism 11, a pneumatic slide table 12, and a lower tire module 13. The lower cooling base plate 10 is provided with a plurality of limiting guide posts 10-1. The flipping mechanism 11 is fastened to the lower cooling base plate 10, the pneumatic slide table 12 is fastened to the lower cooling base plate 10, and the lower tire module 13 is fastened to the flipping mechanism 11.

[0024] The flipping mechanism 11 includes a lower support plate 11-1, a lower support 11-2, a guide rail bracket 11-3, a flipping cylinder seat 11-4, a flipping cylinder 11-5, a T-shaped connecting buckle 11-6, a flat plate 11-7, a rack 11-8, and a rotating shaft 11-9. The lower support plate 11-1, the lower support 11-2, and the guide rail bracket 11-3 are respectively fastened to the lower cooling plate 10. The guide rail bracket 11-3 is provided with a guide rail 11-30. The cylinder body of the flipping cylinder 11-5 is fastened to the lower support plate 11-1 through the flipping cylinder seat 11-4. The piston rod of the tilting cylinder 11-5 is connected to the plate 11-7 via a T-shaped connecting buckle 11-6. The rack 11-8 is fastened to the upper end of the plate 11-7. The lower end of the plate 11-7 is provided with a slider 11-70, which is slidably connected to the guide rail 11-30. The rotating shaft 11-9 is rotatably connected to the lower support 11-2. The end of the rotating shaft 11-9 is provided with a gear 11-90, which meshes with the rack 11-8. The lower support plate 11-1 is provided with a rotating position membrane 100.

[0025] The pneumatic slide table 12 includes a second guide rail bracket 12-1, a slide table cylinder 12-2, an L-shaped connecting buckle 12-3, a T-shaped connecting rod 12-4, a first slide table bracket 12-5, a second slide table bracket 12-6, a third slide table bracket 12-7, and a transverse movement membrane assembly 12-8. The second guide rail bracket 12-1 is equipped with a second guide rail 12-10. The cylinder body of the slide table cylinder 12-2 is fastened to the lower support plate 11-1. The piston rod of -2 is connected to the T-shaped connecting rod 12-4 via the L-shaped connecting buckle 12-3. The T-shaped connecting rod 12-4 is fastened to the slide bracket 12-5. The slide bracket 2 12-6 is fastened to the slide bracket 12-5. The slide bracket 3 12-7 is fastened to both the slide bracket 12-5 and the slide bracket 2 12-6. The transverse membrane assembly 12-8 is fastened to the slide bracket 2 12-6.

[0026] The lower support plate 11-1 has a front limiting bracket 1200 on the front side of the upper slide bracket 12-5, and the front limiting bracket 1200 is equipped with a front buffer limiting sensor 1201 and a front hard limiter 1202; the lower support plate 11-1 has a rear limiting bracket 1203 on the rear side of the upper slide bracket 12-5, and the rear limiting bracket 1203 is equipped with a rear buffer limiting sensor 1204 and a rear hard limiter 1205.

[0027] The transverse shifting membrane group 12-8 includes transverse shifting membrane one 13-2120, transverse shifting membrane two 13-3121, transverse shifting membrane three 13-4122, transverse shifting membrane four 13-5123, transverse shifting membrane five 13-6124 and transverse shifting membrane six 13-7125, and is respectively fastened to the slide support two 12-6.

[0028] The lower tire mold group 13 includes a rotating plate 13-1, tire mold one 13-2, tire mold two 13-3, tire mold three 13-4, tire mold four 13-5, tire mold five 13-6, tire mold six 13-7, tire mold seven 13-8, tire mold eight 13-9, tire mold nine 13-10, tire mold ten 13-11, tire mold eleven 13-12, tire mold twelve 13-13, tire mold thirteen 13-14, tire mold fourteen 13-15, tire mold fifteen 13-16, tire mold sixteen 13-17, tire mold seventeen 13-18, and tire mold eighteen 13-19. The tire mold one 13-2, tire mold two 13-3, tire mold three 13-4, tire mold four 13-5, tire mold five 13-6, tire mold six 13-7, and tire mold seven 13-19 are... 8. Molds 8-9, 9-10, 10-11, 11-12, 12-13, 13-14, 14-15, 15-16, 16-17, 17-18, and 18-19 are respectively fastened to the rotating plate 13-1; Molds 5-6 and 10-11 are respectively provided with positioning cylinder 130, and the piston rod end of positioning cylinder 130 is provided with positioning pin 131; Molds 7-8 and 8-9 are respectively provided with positioning cylinder 2 132, and the piston rod end of positioning cylinder 2 132 is provided with positioning pin 2 133.

[0029] The upper cooling mold fixture 2 includes an upper cooling base plate 20, an upper cooling support 21, an upper cooling module 22, suction cups 23, a first pressing cylinder 24, a second pressing cylinder 25, a third pressing cylinder 26, a first clamping cylinder 27, and a second clamping cylinder 28. The upper cooling base plate 20 is provided with multiple limiting guide sleeves 20-1. The upper cooling support 21 is fastened to the upper cooling base plate 20. The upper cooling module 22 is fastened to the upper cooling support 21. Multiple suction cups 23 are embedded within the upper cooling module 22. The first pressing cylinder 24... Material pressing cylinder 25, material pressing cylinder 26, material clamping cylinder 27, and material clamping cylinder 28 are respectively fastened to the upper cooling bracket 21. The piston rod end of the material pressing cylinder 24 is provided with a material pressing frame 24-1, the piston rod end of the material pressing cylinder 25 is provided with a material pressing frame 25-1, the piston rod end of the material pressing cylinder 26 is provided with a material pressing frame 26-1, the piston rod end of the material clamping cylinder 27 is provided with a clamping hook 27-1, and the piston rod end of the material clamping cylinder 28 is provided with a clamping hook 28-1.

[0030] The intermediate heating mold tooling 3 includes a heating base plate 30, an upper pad plate 31, an upper heating copper mold 1 32, an upper heating copper mold 2 33, a lower pad plate 34, a lower heating copper mold 1 35, and a lower heating copper mold 2 36. The upper pad plate 31 is fastened to the upper end face of the heating base plate 30. The upper heating copper mold 1 32 and the upper heating copper mold 2 33 are respectively fastened to the upper pad plate 31. The lower pad plate 34 is fastened to the lower end face of the heating base plate 30. The lower heating copper mold 1 35 and the lower heating copper mold 2 36 are respectively fastened to the lower pad plate 34.

[0031] like Figures 16 to 18 As shown, the hot plate welding method of the automotive sub-dashboard hot plate welding fixture specifically includes the following steps: Step S1: Loading operation of central channel body 1-1. The central channel body 1-1 is placed into the lower cold mold fixture 1, and then supported by the lower mold assembly 13. The positioning cylinder 130 drives the positioning pin 131 to extend and position, and the positioning cylinder 132 drives the positioning pin 133 to extend and position. Then the flipping mechanism 11 in the lower cold mold fixture 1 drives the central channel body 1-1 to rotate 90° counterclockwise. Step S2: Loading operation of right side plate 1-3. Place right side plate 1-3 into upper cold mold fixture 2. It is first attracted by multiple suction cups 23. Then, pressing cylinder 1 24 drives pressing frame 1 24-1, pressing cylinder 2 25 drives pressing frame 25-1, and pressing cylinder 3 26 drives pressing frame 3 26-1 to press the edge of right side plate 1-3 respectively. Then, clamping cylinder 1 27 drives clamping hook 1 27-1, and clamping cylinder 2 28 drives clamping hook 2 28-1 to clamp the square hole on right side plate 1-3 respectively.

[0032] Step S3: Hot melting operation. The middle hot mold fixture 3 moves between the lower cold mold fixture 1 and the upper cold mold fixture 2. Then, the lower cold mold fixture 1 and the upper cold mold fixture 2 move synchronously. The lower cold mold fixture 1 moves upward with the central channel body 1-1 and contacts the lower hot copper mold 1 35 and the lower hot copper mold 2 36 to hot melt and weld the ribs. The upper cold mold fixture 2 moves downward with the right side plate 1-3 and contacts the upper hot copper mold 1 32 and the upper hot copper mold 2 33 to hot melt and weld the ribs. Then, the lower cold mold fixture 1 moves downward with the central channel body 1-1 to the original position, the upper cold mold fixture 2 moves upward with the right side plate 1-3 to the original position, and the middle hot mold fixture 3 moves to the original position. Step S4: Welding operation. The lower cold mold fixture 1 and the upper cold mold fixture 2 move synchronously. The lower cold mold fixture 1 moves upward with the molten central channel body 1-1, and the upper cold mold fixture 2 moves downward with the right side plate 1-3 until the mold is closed and the welding is completed.

[0033] The specific working method is described below using specific embodiments: Example

[0034] The welding fixture for the hot plate of the automotive sub-dashboard of the present invention includes the following specific hot plate welding method: Step S1: Loading operation of the central channel body 1-1. The central channel body 1-1 is placed into the lower cold mold fixture 1, and then supported by the lower mold assembly 13. The positioning cylinder 130 drives the positioning pin 131 to extend and position, and the positioning cylinder 132 drives the positioning pin 133 to extend and position. Then, the piston rod of the flipping cylinder 11-5 in the flipping mechanism 11 in the lower cold mold fixture 1 extends and passes through the T-shaped connecting buckle 11-6 and the plate 11-7 with the rack. 11-8 moves forward, and gear 11-90 drives the central channel body 1-1 to rotate 90° counterclockwise through the rotating shaft 11-9 and is supported by the rotating position membrane 100; then the piston rod of the slide cylinder 12-2 in the pneumatic slide 12 extends and drives the transverse membrane group 12-8 to press the central channel body 1-1 through the L-shaped connecting buckle 12-3, T-shaped connecting rod 12-4, slide bracket one 12-5, slide bracket two 12-6 and slide bracket three 12-7. Step S2: Loading operation of right side plate 1-3. Place right side plate 1-3 into upper cold mold fixture 2. It is first attracted by multiple suction cups 23. Then, pressing cylinder 1 24 drives pressing frame 1 24-1, pressing cylinder 2 25 drives pressing frame 25-1, and pressing cylinder 3 26 drives pressing frame 3 26-1 to press the edge of right side plate 1-3 respectively. Then, clamping cylinder 1 27 drives clamping hook 1 27-1, and clamping cylinder 2 28 drives clamping hook 2 28-1 to clamp the square hole on right side plate 1-3 respectively.

[0035] Step S3: Hot melting operation. The middle hot mold fixture 3 moves between the lower cold mold fixture 1 and the upper cold mold fixture 2. Then, the lower cold mold fixture 1 and the upper cold mold fixture 2 move synchronously. The lower cold mold fixture 1 moves upward with the central channel body 1-1 and contacts the lower hot copper mold 1 35 and the lower hot copper mold 2 36 to hot melt and weld the ribs. The upper cold mold fixture 2 moves downward with the right side plate 1-3 and contacts the upper hot copper mold 1 32 and the upper hot copper mold 2 33 to hot melt and weld the ribs. Then, the lower cold mold fixture 1 moves downward with the central channel body 1-1 to the original position, the upper cold mold fixture 2 moves upward with the right side plate 1-3 to the original position, and the middle hot mold fixture 3 moves to the original position. Step S4: Welding operation. The lower cold mold fixture 1 and the upper cold mold fixture 2 move synchronously. The lower cold mold fixture 1 moves upward with the molten central channel body 1-1, and the upper cold mold fixture 2 moves downward with the right side plate 1-3 until the mold is closed and the welding is completed.

[0036] The automotive sub-dashboard hot plate welding fixture of the present invention uses a medium-heating mold fixture 3 to heat the upper heating copper mold 1 32, upper heating copper mold 2 33, lower heating copper mold 1 35, and lower heating copper mold 2 36 to the melting point temperature of the central channel body 1-1 and the right side plate 1-3, and maintain this temperature. Then, the lower cooling mold fixture 1, the medium-heating mold fixture 3, and the upper cooling mold fixture 2 are positioned and clamped to make the welding area melt quickly. After the medium-heating mold fixture 3 is quickly removed, the lower cooling mold fixture 1 and the upper cooling mold fixture 2 are quickly joined and cooled under a certain pressure. This solves the problem of the large welding area on the YOZ surface of the product and the high requirements for welding accuracy and welding quality.

[0037] The automotive sub-dashboard hot plate welding fixture of the present invention achieves the switching of the welding surface of the central channel body 1-1 in the YOZ and XOY coordinate systems through the flipping mechanism 11, and ensures the positioning stability of the central channel body 1-1 by rotating the tire film 100 and the lower tire module 13, thus ensuring welding accuracy and welding quality. Example

[0038] Based on Embodiment 1, a front limiting bracket 1200 is provided on the front side of the upper slide bracket 12-5 of the lower support plate 11-1, and a front buffer limiting sensor 1201 and a front hard limiter 1202 are provided on the front limiting bracket 1200; a rear limiting bracket 1203 is provided on the rear side of the upper slide bracket 12-5 of the lower support plate 11-1, and a rear buffer limiting sensor 1204 and a rear hard limiter 1205 are provided on the rear limiting bracket 1203.

[0039] The piston rod of the slide cylinder 12-2 in the pneumatic slide 12 extends and drives the transversely moving membrane assembly 12-8 to press against the central channel body 1-1 through the L-shaped connecting buckle 12-3, the T-shaped connecting rod 12-4, the slide bracket one 12-5, the slide bracket two 12-6, and the slide bracket three 12-7. When the transversely moving membrane assembly 12-8 is 15mm before reaching its final position, the front buffer limit sensor 1201 contacts the slide bracket two 12-6, and the sliding speed of the slide bracket two 12-6 slows down until the front hard limiter 1202 limits it. The piston rod of the slide cylinder 12-2 in the pneumatic slide 12 retracts, driving the transverse membrane assembly 12-8 to retract via the L-shaped connecting buckle 12-3, the T-shaped connecting rod 12-4, slide bracket one 12-5, slide bracket two 12-6, and slide bracket three 12-7. When slide bracket two 12-6 retracts to its previous position (15mm before reaching its final position), the rear buffer limit sensor 1204 contacts slide bracket two 12-6, slowing down its sliding speed until it is stopped by the rear hard limiter 1205.

[0040] The pneumatic slide 12 ensures that the transverse membrane assembly 12-8 slowly presses against the edge of the central channel body 1-1, avoiding scratches on the central channel body 1-1 and ensuring the perfect appearance of the product.

[0041] The present invention has been described above by way of example with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvements made using the inventive concept and technical solution of the present invention, or the direct application of the inventive concept and technical solution of the present invention to other situations without modification, are all within the protection scope of the present invention.

Claims

1. A welding fixture for a hot plate on an automotive sub-dashboard, characterized in that: It includes a lower cold mold tooling (1), an upper cold mold tooling (2) and a middle hot mold tooling (3). The lower cold mold tooling (1) and the upper cold mold tooling (2) are respectively molded with the middle hot mold tooling (3) to achieve heat melting, and the lower cold mold tooling (1) and the upper cold mold tooling (2) are molded together to achieve welding.

2. The welding fixture for the hot plate of the automotive sub-dashboard according to claim 1, characterized in that: The lower cooling mold fixture (1) includes a lower cooling base plate (10), a flipping mechanism (11), a pneumatic slide (12), and a lower tire module (13). The lower cooling base plate (10) is provided with a plurality of limiting guide posts (10-1). The flipping mechanism (11) is fastened to the lower cooling base plate (10), the pneumatic slide (12) is fastened to the lower cooling base plate (10), and the lower tire module (13) is fastened to the flipping mechanism (11).

3. The welding fixture for the hot plate of the automotive sub-dashboard according to claim 2, characterized in that: The flipping mechanism (11) includes a lower support plate (11-1), a lower support (11-2), a guide rail bracket (11-3), a flipping cylinder seat (11-4), a flipping cylinder (11-5), a T-shaped connecting buckle (11-6), a flat plate (11-7), a rack (11-8), and a rotating shaft (11-9). The lower support plate (11-1), the lower support (11-2), and the guide rail bracket (11-3) are respectively fastened to the lower cooling plate (10). The guide rail bracket (11-3) is provided with a guide rail (11-30). The cylinder body of the flipping cylinder (11-5) is connected to the lower support plate (11-1) through the flipping cylinder seat (11-4). The piston rod of the tilting cylinder (11-5) is connected to the plate (11-7) via a T-shaped connecting buckle (11-6). The rack (11-8) is fastened to the upper end of the plate (11-7). The lower end of the plate (11-7) is provided with a slider (11-70), and the slider (11-70) is slidably connected to the guide rail (11-30). The rotating shaft (11-9) is rotatably connected to the lower support (11-2). The end of the rotating shaft (11-9) is provided with a gear (11-90), and the gear (11-90) meshes with the rack (11-8). The lower support plate (11-1) is provided with a rotating position membrane (100).

4. The welding fixture for the hot plate of the automotive sub-dashboard according to claim 3, characterized in that: The pneumatic slide (12) includes a second guide rail bracket (12-1), a slide cylinder (12-2), an L-shaped connecting buckle (12-3), a T-shaped connecting rod (12-4), a first slide bracket (12-5), a second slide bracket (12-6), a third slide bracket (12-7), and a transverse diaphragm assembly (12-8). The second guide rail bracket (12-1) is equipped with a second guide rail (12-10). The cylinder body of the slide cylinder (12-2) is securely connected to the lower support plate (11-1). The piston rod of 12-2) is connected to the T-shaped connecting rod (12-4) through the L-shaped connecting buckle (12-3). The T-shaped connecting rod (12-4) is fastened to the slide bracket one (12-5). The slide bracket two (12-6) is fastened to the slide bracket one (12-5). The slide bracket three (12-7) is fastened to the slide bracket one (12-5) and the slide bracket two (12-6) respectively. The transverse membrane assembly (12-8) is fastened to the slide bracket two (12-6).

5. The welding fixture for the hot plate of the automotive sub-dashboard according to claim 4, characterized in that: The lower support plate (11-1) has a front limiting bracket (1200) on the front side of the upper slide bracket (12-5), and the front limiting bracket (1200) is equipped with a front buffer limiting sensor (1201) and a front hard limiter (1202); the lower support plate (11-1) has a rear limiting bracket (1203) on the rear side of the upper slide bracket (12-5), and the rear limiting bracket (1203) is equipped with a rear buffer limiting sensor (1204) and a rear hard limiter (1205).

6. The welding fixture for the hot plate of the automotive sub-dashboard according to claim 4, characterized in that: The transverse transfer membrane group (12-8) includes transverse transfer mold one (13-2) (120), transverse transfer mold two (13-3) (121), transverse transfer mold three (13-4) (122), transverse transfer mold four (13-5) (123), transverse transfer mold five (13-6) (124) and transverse transfer mold six (13-7) (125), and is respectively fastened to slide bracket two (12-6).

7. The welding fixture for the hot plate of the automotive sub-dashboard according to claim 2, characterized in that: The lower tire mold assembly (13) includes a rotating plate (13-1), tire mold one (13-2), tire mold two (13-3), tire mold three (13-4), tire mold four (13-5), tire mold five (13-6), tire mold six (13-7), tire mold seven (13-8), tire mold eight (13-9), tire mold nine (13-10), tire mold ten (13-11), tire mold eleven (13-12), and tire mold twelve (13-13-14). 3-13), tire mold thirteen (13-14), tire mold fourteen (13-15), tire mold fifteen (13-16), tire mold sixteen (13-17), tire mold seventeen (13-18), and tire mold eighteen (13-19), and tire mold one (13-2), tire mold two (13-3), tire mold three (13-4), tire mold four (13-5), tire mold five (13-6), tire mold six (13-7), and tire mold seven. (13-8), mold eight (13-9), mold nine (13-10), mold ten (13-11), mold eleven (13-12), mold twelfth (13-13), mold thirteenth (13-14), mold fourteenth (13-15), mold fifteen (13-16), mold sixteenth (13-17), mold seventeenth (13-18), and mold eighteenth (13-19) are respectively fastened to the rotating plate (13-1); mold five (13-6) and mold ten (13-11) are respectively provided with positioning cylinder one (130), and the piston rod end of the positioning cylinder one (130) is provided with positioning pin one (131); mold seven (13-8) and mold eight (13-9) are respectively provided with positioning cylinder two (132), and the piston rod end of the positioning cylinder two (132) is provided with positioning pin two (133).

8. The welding fixture for the hot plate of the automotive sub-dashboard according to claim 1, characterized in that: The upper cooling mold fixture (2) includes an upper cooling base plate (20), an upper cooling support (21), an upper cooling module (22), suction cups (23), a first pressing cylinder (24), a second pressing cylinder (25), a third pressing cylinder (26), a first clamping cylinder (27), and a second clamping cylinder (28). The upper cooling base plate (20) is provided with multiple limiting guide sleeves (20-1). The upper cooling support (21) is fastened to the upper cooling base plate (20), and the upper cooling module (22) is fastened to the upper cooling support (21). Multiple suction cups (23) are embedded within the upper cooling module (22). The first pressing cylinder... (24) Pressing cylinder 2 (25), pressing cylinder 3 (26), clamping cylinder 1 (27) and clamping cylinder 2 (28) are respectively fastened to the upper cold support (21). The piston rod end of pressing cylinder 1 (24) is provided with pressing frame 1 (24-1), the piston rod end of pressing cylinder 2 (25-1) is provided with pressing frame 2 (25-1), the piston rod end of pressing cylinder 3 (26) is provided with pressing frame 3 (26-1), the piston rod end of clamping cylinder 1 (27) is provided with clamping hook 1 (27-1), and the piston rod end of clamping cylinder 2 (28) is provided with clamping hook 2 (28-1).

9. The welding fixture for the hot plate of the automotive sub-dashboard according to claim 1, characterized in that: The heating mold fixture (3) includes a heating base plate (30), an upper pad plate (31), an upper heating copper mold one (32), an upper heating copper mold two (33), a lower pad plate (34), a lower heating copper mold one (35), and a lower heating copper mold two (36). The upper pad plate (31) is fastened to the upper end face of the heating base plate (30). The upper heating copper mold one (32) and the upper heating copper mold two (33) are fastened to the upper pad plate (31) respectively. The lower pad plate (34) is fastened to the lower end face of the heating base plate (30). The lower heating copper mold one (35) and the lower heating copper mold two (36) are fastened to the lower pad plate (34) respectively.

10. The hot plate welding method of the automotive sub-dashboard hot plate welding fixture according to any one of claims 1-7, characterized in that: Specifically, the following steps are included: Step S1: Loading operation of the central channel body (1-1): The central channel body (1-1) is placed into the lower cold mold fixture (1), and then supported by the lower tire module (13). The positioning cylinder one (130) drives the positioning pin one (131) to extend and position, and the positioning cylinder two (132) drives the positioning pin two (133) to extend and position. Then the flipping mechanism (11) in the lower cold mold fixture (1) drives the central channel body (1-1) to rotate 90° counterclockwise. Step S2: Loading operation of right side plate (1-3): Place right side plate (1-3) into upper cold mold fixture (2), first be attracted by multiple suction cups (23), then pressure cylinder one (24) drives pressure frame one (24-1), pressure cylinder two (25) drives pressure frame two (25-1), pressure cylinder three (26) drives pressure frame three (26-1) to press the edge of right side plate (1-3) respectively, then clamping cylinder one (27) drives clamping hook one (27-1), clamping cylinder two (28) drives clamping hook two (28-1) to clamp the square hole on right side plate (1-3) respectively; Step S3: Hot melting operation. The middle hot mold fixture (3) moves between the lower cold mold fixture (1) and the upper cold mold fixture (2). Then the lower cold mold fixture (1) and the upper cold mold fixture (2) move synchronously. The lower cold mold fixture (1) moves upward with the central channel body (1-1) and contacts the lower hot copper mold one (35) and the lower hot copper mold two (36) to hot melt and weld the ribs. The upper cold mold fixture (2) moves downward with the right side plate (1-3) and contacts the upper hot copper mold one (32) and the upper hot copper mold two (33) to hot melt and weld the ribs. Then the lower cold mold fixture (1) moves downward with the central channel body (1-1) to the original position. The upper cold mold fixture (2) moves upward with the right side plate (1-3) to the original position. The middle hot mold fixture (3) moves to the original position. Step S4: Welding operation. The lower cold mold fixture (1) and the upper cold mold fixture (2) move synchronously. The lower cold mold fixture (1) moves upward with the molten central channel body (1-1), and the upper cold mold fixture (2) moves downward with the right side plate (1-3) until the mold is closed and the welding is completed.

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