CN117381298A - Automatic welding tool for vehicle door assembly - Google Patents
Automatic welding tool for vehicle door assembly Download PDFInfo
- Publication number
- CN117381298A CN117381298A CN202311670241.2A CN202311670241A CN117381298A CN 117381298 A CN117381298 A CN 117381298A CN 202311670241 A CN202311670241 A CN 202311670241A CN 117381298 A CN117381298 A CN 117381298A
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- Prior art keywords
- welding
- door
- marking
- heating
- reaction
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 238000003466 welding Methods 0.000 title claims abstract description 127
- 238000010438 heat treatment Methods 0.000 claims abstract description 70
- 238000001816 cooling Methods 0.000 claims abstract description 34
- 238000007493 shaping process Methods 0.000 claims abstract description 30
- 230000001050 lubricating effect Effects 0.000 claims abstract description 3
- 238000006243 chemical reaction Methods 0.000 claims description 54
- 238000001514 detection method Methods 0.000 claims description 48
- 239000011248 coating agent Substances 0.000 claims description 44
- 238000000576 coating method Methods 0.000 claims description 44
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 41
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 16
- 238000003860 storage Methods 0.000 claims description 15
- 235000011089 carbon dioxide Nutrition 0.000 claims description 14
- 238000004804 winding Methods 0.000 claims description 12
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 11
- 239000012782 phase change material Substances 0.000 claims description 11
- 239000000843 powder Substances 0.000 claims description 11
- 239000003795 chemical substances by application Substances 0.000 claims description 10
- 238000005461 lubrication Methods 0.000 claims description 4
- 230000000149 penetrating effect Effects 0.000 claims description 4
- 238000000859 sublimation Methods 0.000 claims description 4
- 230000008022 sublimation Effects 0.000 claims description 4
- 239000008236 heating water Substances 0.000 claims description 2
- 210000001503 joint Anatomy 0.000 claims description 2
- 230000006978 adaptation Effects 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 4
- 230000003044 adaptive effect Effects 0.000 abstract description 2
- 239000004814 polyurethane Substances 0.000 description 26
- 229920002635 polyurethane Polymers 0.000 description 26
- 238000000465 moulding Methods 0.000 description 20
- 241000196324 Embryophyta Species 0.000 description 18
- 238000000034 method Methods 0.000 description 10
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 8
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 6
- 239000001301 oxygen Substances 0.000 description 6
- 229910052760 oxygen Inorganic materials 0.000 description 6
- 239000000463 material Substances 0.000 description 5
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 4
- 235000017491 Bambusa tulda Nutrition 0.000 description 4
- 241001330002 Bambuseae Species 0.000 description 4
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 4
- 239000011425 bamboo Substances 0.000 description 4
- 238000007254 oxidation reaction Methods 0.000 description 3
- 230000001960 triggered effect Effects 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 238000007711 solidification Methods 0.000 description 2
- 230000008023 solidification Effects 0.000 description 2
- 238000005092 sublimation method Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 238000005524 ceramic coating Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 239000007888 film coating Substances 0.000 description 1
- 238000009501 film coating Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000005338 heat storage Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 229910000077 silane Inorganic materials 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000007779 soft material Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
- B23K37/04—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
- B23K37/0426—Fixtures for other work
- B23K37/0435—Clamps
- B23K37/0443—Jigs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
- B23K37/003—Cooling means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/006—Vehicles
Abstract
The application discloses an automatic welding tool for a vehicle door assembly, which comprises a base, a welding seat rotationally arranged on the base and a fixing device for fixing a door plate; the welding seat is provided with two welding grooves for placing the door plates, and an adjusting device for adapting to different door plate shapes and a detecting device for detecting whether the position to be welded of the door plates is horizontal or not are arranged in the welding grooves; the adjusting device comprises a shaping part, a cooling mechanism and a heating mechanism, wherein the shaping part is adaptive to different door plate shapes, the cooling mechanism is used for solidifying the shaping part, the heating mechanism is used for softening the shaping layer, and the welding seat is arranged in the welding groove and is provided with a lubricating mechanism which is convenient for taking out the shaping part after softening. The shaping portion has the effect of adaptation different model door plant in this application, promotes the work efficiency to door welded greatly.
Description
Technical Field
The application relates to the field of automobile production, in particular to an automatic welding tool for a vehicle door assembly.
Background
At present, an important part of an automobile is arranged on an automobile door, the automobile door can play a role in protecting the safety of personnel in the automobile in the running process of the automobile, the automobile door is welded by the automatic mechanical welding process in the production process, the welding table inside the existing automobile door welding equipment cannot rotate when in use, the welding machine can only use a double-wall welding device to weld the automobile door when in use, the working efficiency of the welding machine is reduced, the welding table inside the existing automobile door automatic welding equipment in the use process can not rotate, and the problem of wasting the working efficiency of the welding machine is caused.
In the related art, patent publication number CN112676682a discloses an automatic welding device and process for an automobile door assembly, which comprises a welding base, wherein a driving chamber is arranged at the lower side of the inner part of the welding base, a rotating shaft penetrates through the middle part of the welding base, a driven bevel gear is sleeved on one section of outer wall of the rotating shaft penetrating through the inner part of the driving chamber, a welding table is arranged in the middle part of the top surface of the rotating shaft, the middle part of the bottom surface of the welding table is fixedly connected with the middle part of the top surface of the rotating shaft in a jogging manner, a driving motor is arranged at one side of the inner part of the driving chamber, a driving bevel gear is sleeved on the outer wall of the driving end of the driving motor, and the driving bevel gear is meshed with the driven bevel gear; the driving motor arranged inside the base drives the rotating shaft to rotate, so that the welding table positioned in the middle of the top end of the rotating shaft can rotate, and the problem of waste of the working efficiency of the welding machine caused by incapability of rotating the welding table is solved, so that the device has higher working efficiency when in use and is more convenient for the welding machine to work.
For the related art, because the shapes of the automobile plates are different, when two door plates are welded, the welding positions are required to be kept horizontal, the alignment of the V-shaped grooves can be ensured, otherwise, the welding quality can be influenced, the welding table is horizontally arranged, and if the shapes of the door plates are required to be adapted, the welding table is required to be replaced when the corresponding door plates are required to be welded, so that the normal operation of the welding work is influenced.
Disclosure of Invention
In order to improve the problem of door plant and welding bench discomfort, this application provides a door assembly automatic weld frock.
The application provides a door assembly automatic weld frock adopts following technical scheme:
an automatic welding tool for a vehicle door assembly comprises a base, a welding seat rotatably arranged on the base and a fixing device for fixing a door plate;
the welding seat is provided with two welding grooves for placing the door plates, and an adjusting device for adapting to different door plate shapes and a detecting device for detecting whether the position to be welded of the door plates is horizontal or not are arranged in the welding grooves;
the adjusting device comprises a shaping part, a cooling mechanism and a heating mechanism, wherein the shaping part is adaptive to different door plate shapes, the cooling mechanism is used for solidifying the shaping part, the heating mechanism is used for softening the shaping part, and the welding seat is arranged in the welding groove and is provided with a lubricating mechanism which is convenient for taking out the shaping part after softening.
Optionally, cooling mechanism is including the cooling tank that is equipped with dry ice, be used for accelerating the heating pipe of dry ice sublimation, be used for heating up the subassembly and the supply tank of rising temperature of water, the supply tank is fixed on the base, still be provided with the water pump in the supply tank, the output of water pump with heating pipe end connection, the heating pipe is fixed in the cooling tank, the welding seat is provided with the cavity, the cooling tank is fixed the outer wall of welding groove, the heating pipe is located the lateral wall of below and is provided with a plurality of hot water holes, the heating pipe is kept away from the one end of water pump is closed setting.
Optionally, the heating mechanism includes a plurality of sleeve pipes and a plurality of heating member of fixing in the sleeve pipe, the heating subassembly is including being used for filling phase change material's intensification pipe, the welding seat is close to the welding groove position is provided with a plurality of heating chamber, the sleeve pipe is fixed in the heating intracavity, the one end of intensification pipe stretch into to the heating intracavity, the one end of intensification pipe stretch into with sleeve pipe tip butt, the other end stretches into in the heating pipe.
Optionally, the lubrication mechanism including the activity set up in the film of welding groove bottom, be used for drawing the traction assembly of film motion and be used for giving the coating subassembly of film coating anti-sticking agent, the welding seat is in the welding groove lateral wall is provided with the feed opening, the welding seat is in the feed opening position slides and is provided with the control panel, the welding groove diapire is along the orientation the height of feed opening direction reduces gradually, film motion direction perpendicular to after softening shaping portion flow direction.
Optionally, the coating subassembly is including coating case, coating roller and the squeeze roll that is equipped with the anti-sticking agent, the traction assembly includes two winding rollers and two servo motors, the coating case is fixed the cavity inner wall of welding seat, the coating roller rotate set up in the coating incasement, the squeeze roll rotates set up in the welding seat inner wall, the film is followed the coating roller with pass between the squeeze roll, winding roller rotate set up in the cavity of welding seat, servo motor is used for the drive winding roller rotates.
Optionally, the detection device is including setting up support, lift on the welded seat set up in support frame on the support and slip set up the detection frame on the support frame, elasticity set up in the detection pole on the detection frame, be used for the sign door plant to wait whether horizontal marking mechanism of welded position and be used for detecting whether two door plants are in the test mechanism of coplanar, the detection pole is vertical setting just the one end of detection pole and door plant butt is the pointed end setting.
Optionally, the marking mechanism includes mark board, mark section of thick bamboo, elasticity set up in the reaction pole of mark section of thick bamboo and reaction subassembly, the mark board is fixed on the support frame, be provided with on the mark board with the mark hole of reaction pole adaptation, the reaction pole is in initial position time to the distance of mark hole bottom is greater than the distance that the detection pole moved on the door plant, reaction subassembly is used for the sign whether the reaction pole moves to in the mark hole.
Optionally, the reaction subassembly include reduced iron powder package, temperature sensor and with temperature sensor electric connection's buzzer, the reaction pole lateral wall is provided with and is used for depositing the storage hole of reduced iron powder package, mark a section of thick bamboo lateral wall is provided with the reaction hole, mark a section of thick bamboo with the marking plate is in initial position time the reaction hole with the storage hole dislocation.
Optionally, the test mechanism includes that go up and down to set up in any test board, two test bars, battery, bulb, electric wire, lug, two sliders and trigger on the support frame the trigger subassembly of slider motion, two test bars respectively with two the top fixed connection of test bar, the battery is fixed the upper surface of test board, the one end of electric wire with the lug is connected, the other end with the lamp stand of bulb is connected, two sliders respectively with the bulb and lug fixed connection, the lug corresponds the negative pole of battery just the lamp stand of bulb corresponds the positive pole of battery.
Optionally, the trigger assembly is including fixing electro-magnet, grafting piece and the driving piece on the detection frame, the electro-magnet is used for adsorbing and corresponds the measuring rod, the slider with the one end of test board butt is provided with the spout, the grafting piece elasticity set up in the spout, the test board runs through and is provided with the spliced eye, the driving piece slide in the spliced eye, driving piece length dimension equals the depth dimension of spliced eye, the slider also elasticity set up in the upper surface of test board. In summary, the present application includes at least one of the following beneficial technical effects:
1. after the door plate is extruded in the molding part, the molding part forms the shape of the door plate, so that the door plate is adapted to different door plates, a welding seat is not required to be replaced, and the polyurethane is only required to be softened by a softening mechanism when replaced, so that the molding part is convenient to replace, and the door plate with other shapes can be further adapted;
2. when the door plate is in the shaping part, whether the position to be detected of the door plate is horizontal or not is detected, when the reaction rod moves into the marking hole, the relative position between the reaction rod and the marking cylinder does not change in the process of detecting whether the door plate is horizontal or not, the opening of the reaction hole is in an initial state and is attached to the inner wall of the marking cylinder, when the reaction rod is abutted against the marking plate and the reaction rod is extruded towards the inside of the marking cylinder, the reaction hole is communicated with the storage hole, oxygen in the air enters the storage hole, reduced iron powder and oxygen undergo oxidation reaction, a large amount of heat is generated at the moment, a temperature sensor monitors the temperature change, a buzzer is triggered to start to work, and the buzzer emits sound to prove that the position to be welded of the door plate is not horizontal;
3. when the test board moves downwards and moves to a designated position, the test bar is abutted against the end part of the driving block, the driving block is completely extruded into the inserting hole, at the moment, the inserting block is completely moved into the sliding groove, the sliding block starts to slide along the sliding bar, the sliding block is driven to move towards the battery direction, when one sliding block starts to move, the movement of the test board is stopped, and if the other sliding block also starts to move, the wiring lug is abutted against the negative electrode of the battery, the lamp holder of the bulb is abutted against the positive electrode of the battery, and the bulb emits light, namely two door plates are flush; if the other slide block does not move, the bulb does not emit light, namely, the two door plates are not in a flush state, and the relative positions of the two door plates need to be adjusted until the two door plates are flush.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic overall structure of an embodiment of the present application;
FIG. 2 is a schematic view of a weld holder, a lubrication mechanism, a cooling mechanism, and a heating structure according to an embodiment of the present application;
FIG. 3 is a schematic view of a bonding pad, a control board and a film according to an embodiment of the present application;
FIG. 4 is a schematic diagram of a detection device in an embodiment of the present application;
fig. 5 is a schematic diagram of an identification mechanism in an embodiment of the present application.
Reference numerals: 1. a base; 2. a welding seat; 3. a welding groove; 4. a shaping part; 5. a cooling box; 6. heating pipes; 7. a water supply tank; 8. a water pump; 9. a hot water hole; 10. a sleeve; 11. a heating member; 12. a heating pipe; 13. a film; 14. a feed opening; 15. a control board; 16. a coating box; 17. a coating roller; 18. a squeeze roll; 19. a winding roller; 20. a servo motor; 21. a bracket; 22. a support frame; 23. a detection frame; 24. a detection rod; 25. a marking plate; 26. a marking cylinder; 27. a reaction rod; 28. marking the hole; 29. a reduced iron powder pack; 30. a temperature sensor; 31. a buzzer; 32. a storage hole; 33. a reaction hole; 34. a test plate; 35. a test rod; 36. a battery; 37. an electric wire; 38. a wire connection piece; 39. a slide block; 40. a plug block; 41. an electromagnet; 42. a limiting block; 43. a driving block; 44. a chute; 45. a plug hole; 46. a handle.
Detailed Description
The present application is described in further detail below in conjunction with figures 1-5.
The embodiment of the application discloses an automatic welding tool for a vehicle door assembly. Referring to fig. 1 and 2, an automatic welding fixture for a vehicle door assembly comprises a base 1, a welding seat 2 rotatably arranged on the base 1, and a fixing device for fixing a door plate, wherein a rotating shaft is rotatably connected to the bottom of the welding seat 2, an operation cavity is arranged in the base 1, the rotating bottom end penetrates into the operation cavity, and a driving motor for driving the rotating shaft to rotate is arranged in the operation cavity of the base 1; the fixing device adopts the fixture or the pressure plate, the structure of the fixing device according to the image is not repeated, the door plate clamp is only required to be fastened and fixed, and the argon tungsten-arc welding machine is selected for interval spot welding in the implementation.
The welding seat 2 is provided with two welding grooves 3 for placing the door plant, two welding grooves 3 are not connected, when placing the door plant in welding groove 3, wait to weld the position to place the position between two welding grooves 3 on the door plant, set up V-arrangement groove at two door plant wait to weld the position in this embodiment, and then need guarantee that the door plant wait to weld the position and need keep level and keep the parallel and level, the welding seat 2 is provided with the adjusting device who is used for the adaptation different door plant shapes and is used for detecting whether the door plant wait to weld the position horizontally detection device in welding groove 3, adjusting device is used for guaranteeing that the door plant is placed in welding groove 3 and can keep waiting to weld the position horizontally, and detection device is used for waiting to weld whether the position horizontally detects.
Referring to fig. 1 and 2, the adjusting device includes a molding portion 4 adapted to different door panel shapes, a cooling mechanism for fixing and solidifying the molding portion 4, and a heating mechanism for softening the molding layer, wherein the material of the molding portion 4 is polyurethane or plasticine, preferably polyurethane, which is a polymer compound, and has various characteristics including elasticity, wear resistance, oil resistance, chemical resistance, heat insulation, electrical insulation, aging resistance, water absorption, adhesiveness, etc., and the polyurethane can cool the molding portion and accelerate the solidification of the polyurethane, and heat the polyurethane, so that the softening of the polyurethane can be accelerated, and then after the door panel is extruded in the molding portion 4, the molding portion 4 forms the shape of the door panel, the shape adapted to different door panels is realized, and the welding seat 2 is not required to be replaced, and the polyurethane is softened only by the softening mechanism when the polyurethane is replaced, so that the molding portion 4 is replaced, and the door panel with other shapes can be adapted again.
The cooling mechanism comprises a cooling box 5 filled with dry ice, a heating pipe 6 for accelerating sublimation of the dry ice, a heating assembly for heating water and a water supply tank 7, wherein the water supply tank 7 is fixed on the base 1, a water pump 8 is installed in the water supply tank 7, a cavity is formed in the welding seat 2, the cooling box 5 is fixed on the outer wall of the welding groove 3, the section of the cooling box 5 is concave, two opposite side walls are arranged in an opening mode, the cooling box 5 is fixed in the cavity of the welding seat 2, the cooling pipe is fixed in the cooling box 5, one end of the heating pipe 6 is arranged in the opening mode, the other end of the heating pipe 6 is fixedly connected with the output end of the water pump 8, the water pump 8 is connected with the heating pipe 6 through a water pipe, the water pipe is made of soft materials, a plurality of hot water holes 9 are formed in the side walls of the lower portion, the hot water holes 9 are arranged on the heating pipe 6 at equal intervals, any one side wall of the cooling box 5 is provided with an operation port for placing the dry ice, and the cooling box 5 is fixed at the operation port through bolts. The cooling box 5 is also provided with a plurality of small-sized air holes for discharging carbon dioxide gas sublimated from the dry ice.
The heating mechanism comprises a plurality of sleeves 10 and a plurality of heating pieces 11 fixed in the sleeves 10, the heating assembly comprises a heating pipe 12 for filling phase change materials, a plurality of heating cavities are arranged at positions, close to the welding grooves 3, of the welding seats 2, the length directions of the heating cavities are parallel to the length directions of the heating pipes 6, the sleeves 10 are fixed in the heating cavities, the heating pieces 11 are heating wires, the sleeves 10 and the heating pipes 6 are made of materials with good heat conduction performance, one ends of the heating pipes 12 extend into the heating cavities and are abutted to the ends of the sleeves 10, heat of the sleeves 10 is transferred to the phase change materials in the heating pipes 12, and the Phase Change Materials (PCM) are used for adjusting the temperature by utilizing the heat absorption and release characteristics in the phase change process, so that the energy efficiency is improved; the other end of the heating pipe 12 extends into the heating pipe 6 for heating the water in the heating pipe 6.
When softening polyurethane, the heating piece 11 heats sleeve 10, the polyurethane begins to soften after rising the temperature, be convenient for extrude the door plant in shaping portion 4, and ensure the adaptation degree between door plant and the shaping portion 4, sleeve 10 reaches heating pipe 12 with heat transfer simultaneously, phase change material in the heating pipe 12 begins to absorb heat and get up heat storage, when needs solidify polyurethane, water pump 8 takes out the water in the supply tank 7 to heating pipe 6 position, carry out heat transfer between water and the heating pipe 12 this moment, phase change material begins the release temperature under the environment that the temperature is low, phase change material will heat transfer water, after the temperature risees, flow into cooling tank 5 from hot water hole 9, the process that dry ice runs into dry ice and runs into dry ice sublimation is fast to cool down to cooling tank 5 this moment, polyurethane material in the cooling tank 5 is fast cooled down, after the polyurethane solidification, shaping portion 4 forms the mould with the door plant adaptation, only need directly place the same batch door plant in shaping portion 4, can begin to weld two door plant.
Referring to fig. 1 and 2, the welding seat 2 is provided with a lubrication mechanism in the welding groove 3 for taking out the softened molding part 4, when a door plate of another model needs to be welded, the molding part 4 needs to be replaced at this time, after the polyurethane is softened by adopting a heating mode in the embodiment, the molding part 4 is taken out, in addition, in order to accelerate the softening of the molding part 4, acetone can be sprayed towards the inner wall of the welding groove 3, and the acetone can be used as a solvent in the preparation process of the polyurethane. Acetone firstly reduces the viscosity of the system, so that the polyurethane is easier to process; and acetone is left along the inner wall of the welding groove 3, which is in contact with the shaping part 4, and the rapid-falling shaping part 4 is rapidly separated from the side wall of the welding groove 3.
Referring to fig. 2 and 3, the softening mechanism comprises a film 13 movably arranged at the bottom of a welding groove 3, a traction component used for traction of the movement of the film 13, and a coating component used for coating the film 13 with an anti-sticking agent, wherein a blanking opening 14 is formed in the side wall of the welding groove 3, a control plate 15 is slidably arranged at the position of the blanking opening 14 on the welding seat 2, the sliding of the control plate 15 is realized by an electric push rod, the height of the bottom wall of the welding groove 3 along the direction facing the blanking opening 14 is gradually reduced, the movement direction of the film 13 is perpendicular to the flow direction of the softened shaping part 4, and the flow direction of the shaping part 4 is arranged along the direction of the connecting line of the side walls of two openings of a cooling box 5, so that the cooling box 5 is prevented from influencing the work of replacing the shaping part 4, and the polyurethane moves along the direction facing the blanking opening 14 under the action of gravity after being softened; the coating assembly comprises a coating box 16 filled with an anti-sticking agent, a coating roller 17 and a squeeze roller 18, wherein the winding assembly comprises two winding rollers 19 and two servo motors 20, the coating box 16 is fixed on the inner wall of a cavity of the welding seat 2, the coating roller 17 is rotatably arranged in the coating box 16, the squeeze roller 18 is rotatably arranged on the inner wall of the cavity of the welding seat 2, the axial directions of the squeeze roller 18 and the coating roller 17 are perpendicular to the moving direction of the film 13, the anti-sticking agent is filled in the coating box 16, the anti-sticking coating is any one of a polymer coating, a ceramic coating, a silicon dioxide coating and a silane coating, and the coating has excellent wear resistance, corrosion resistance, high temperature resistance, low temperature resistance and the like, and can effectively prevent adhesion between an object and other substances; part of the coating roller 17 is below the surface of the anti-sticking agent, the squeeze roller 18 is above the coating roller 17, and the squeeze roller 18 and the coating roller 17 are located on both sides of the film 13, respectively.
Referring to fig. 1 and 2, a winding roller 19 is rotatably disposed on an inner wall of an inner cavity of a welding seat 2, an axial direction of the winding roller 19 is parallel to an axial direction of a squeeze roller 18, a servo motor 20 is used for driving the winding roller 19 to rotate, the servo motor 20 is mounted in the inner cavity of the welding seat 2, the two servo motors 20 are disposed at the same frequency and rotate towards the same direction, in this embodiment, a coating box 16 is disposed at a position where a film 13 does not enter a welding groove 3, coating openings are disposed on two opposite side walls of the welding groove 3, the coating openings are adapted to the film 13, and a connecting line direction of the side walls of the welding groove 3 where the two coating openings are located is perpendicular to a flowing direction of polyurethane; when the film 13 needs to be pulled into the welding groove 3, the two servo motors 20 synchronously start to rotate positively, under the friction force of the squeeze roller 18 and the coating roller 17 on the film 13, the coating roller 17 and the squeeze roller 18 rotate, the anti-sticking agent is adhered to the coating roller 17 and the film 13 under the matching action of the squeeze roller 18, the film 13 is pulled continuously until the film 13 coated with the anti-sticking agent moves to the bottom wall of the welding groove 3, when the molding part 4 needs to be replaced, the adhesion force between softened polyurethane and the bottom of the welding groove 3 is small, and the polyurethane can flow out from the position of the feed opening 14 under the action of gravity conveniently.
Referring to fig. 1 and 4, the detection device includes a bracket 21 disposed on the welding seat 2, a supporting frame 22 disposed on the bracket 21 in a lifting manner, a detection frame 23 disposed on the supporting frame 22 in a sliding manner, a detection rod 24 disposed on the detection frame 23 in an elastic manner, a marking mechanism for marking whether the door panels are horizontal or not, and a test mechanism for detecting whether the two door panels are on the same plane, wherein the detection rod 24 is disposed vertically, one end of the detection rod 24 abutting against the door panels is disposed at a tip, the movement direction of the bracket 21 is perpendicular to the movement direction of the detection frame 23, the sliding of the bracket 21 and the movement of the supporting frame 22 along the vertical direction are both realized by an electric push rod, the movement direction of the supporting frame 22 moves along the side wall of the door panels toward the direction of the welding groove 3, and then whether the door panels are horizontal or not can be detected, the detection frame 23 is provided with a perforation, the detection rod 24 is slidably fitted in the perforation, a part of the detection rod 24 away from the door panels is fixedly sleeved with a handle 46, the length direction of the handle 46 is disposed vertically to the length direction of the detection rod 24, two ends of the spring are sleeved outside the detection rod 24, and the spring are respectively connected with the handle 46 and the detection frame 23 in a stretched state when the spring abuts against the door panels; under the action of the elastic force of the spring, the tip of the detection rod 24 is always in butt joint with the position to be welded of the door plate, and if the position of the other end of the detection rod 24 in the vertical direction changes, the adaptation relation between the door plate and the shaping part 4 needs to be adjusted to prove that the door plate is not horizontal.
Referring to fig. 4 and 5, the marking mechanism includes a marking plate 25, a marking cylinder 26, a reaction rod 27 elastically disposed on the marking cylinder 26, and a reaction assembly, wherein the marking plate 25 is fixed on the supporting frame 22, the reaction rod 27 is slidably fitted in the marking cylinder 26, one end of the marking cylinder 26 is disposed in a closed manner and fixedly connected with a peripheral wall of the detection rod 24, the length direction of the marking cylinder 26 is parallel to the length direction of the detection rod 24, the movement direction of the marking cylinder 26 is along the sliding direction of the detection rod 24 on the door panel, a spring is fixedly connected between one end of the reaction rod 27 in the marking cylinder 26 and an inner wall of an end portion of the marking cylinder 26, the marking plate 25 is provided with a marking hole 28 adapted to the reaction rod 27, and the distance from the reaction rod 27 to the bottom of the marking hole 28 is greater than the distance from the detection rod 24 on the door panel when the reaction rod 27 moves into the marking hole 28, that is that in the process of detecting whether the door panel is horizontal or not, the relative position between the reaction rod 27 and the marking cylinder 26 is unchanged; if the door is not horizontal, the reaction rod 27 will contact the marking plate 25 when the reaction rod 27 moves above or below the upward marking hole 28, and the relative position between the reaction plate and the marking cylinder 26 will change.
The reaction component comprises a reduced iron powder package 29, a temperature sensor 30 and a buzzer 31 electrically connected with the temperature sensor 30, wherein a storage hole 32 for storing the reduced iron powder package 29 is formed in the side wall of a reaction rod 27, a reaction hole 33 is formed in the side wall of the mark cylinder 26, the reaction hole 33 is staggered with the storage hole 32 when the mark cylinder 26 and the mark plate 25 are at the initial position, the temperature sensor 30 is arranged in the storage hole 32, the temperature sensor 30 is connected with the buzzer 31 through the control of a PLC controller, the reaction hole 33 is formed by penetrating a high-temperature-resistant non-woven fabric material, the reduced iron powder package 29 is fixed with the inner wall of the storage hole 32 through bolts, the opening of the reaction hole 33 is attached to the inner wall of the mark cylinder 26 in the initial state, when the reaction rod 27 is abutted to the mark plate 25, the reaction rod 27 is pressed towards the inside of the mark cylinder 26, the reaction hole 33 is communicated with the storage hole 32, oxygen in air enters the storage hole 32, the reduced iron powder and oxygen undergo oxidation reaction, a large amount of heat is generated at the moment, the temperature sensor 30 monitors temperature change, the buzzer 31 is triggered, the buzzer 31 is proved to be turned on, and the sound of the door plate 31 is not level. In this embodiment, detection devices are provided for two door panels, so as to ensure whether the two door panels are horizontally detected, and of course, the brackets 21 and the supporting frames 22 in the two detection devices can be connected together, so that actual operation is facilitated; when the inspection work is completed, the bracket 21 is moved to a position where it does not interfere with welding the door panel.
The test mechanism comprises a test plate 34, two test rods 35, a battery 36, a bulb, an electric wire 37, a lug 38, two sliding blocks 39 and a trigger component for triggering the sliding blocks 39 to move, wherein the test plate 34, the two test rods 35, the battery 36, the electric wire 37, the lug 38, the two sliding blocks 39 and the trigger component for triggering the sliding blocks 39 to move are arranged on any support frame 22 in a lifting mode, the movement paths of the test plate 34 are staggered, the movement of the test plate 25 is ensured not to be interfered by the test plate 34, the two test rods 35 are respectively fixedly connected with the top ends of the two detection rods 24, the battery 36 is fixed on the upper surface of the test plate 34, one end of the electric wire 37 is connected with the lug 38, the other end of the electric wire 37 is connected with a lamp holder of the bulb, the lug 38 corresponds to the negative electrode of the battery 36 and the lamp holder of the bulb corresponds to the positive electrode of the battery 36, when the lug 38 is abutted to the negative electrode of the battery 36, the bulb emits light at the moment, and the lamp holder of the bulb is abutted to the positive electrode of the battery 36, so that the two test rods 35 are proved to be in the same horizontal plane at the same time, namely that two door plates are flush to be welded; the two sliding blocks 39 are respectively and fixedly connected with the bulb and the wiring lug 38, the sliding blocks 39 are made of insulating materials, and the sliding blocks 39 are connected with the bulb and the wiring lug 38 through clamps or bolts.
Referring to fig. 4 and 5, the trigger assembly includes an electromagnet 41 fixed on the corresponding detection frame 23, a plugging block 40 to drive the block 43, the electromagnet 41 is used for adsorbing the corresponding detection rod 24, one end of the sliding block 39, which is abutted against the test board 34, is provided with a sliding groove 44, the plugging block 40 is elastically arranged in the sliding groove 44, the plugging block 40 slides in the sliding groove 44, one end of the plugging block 40, which is positioned in the sliding groove 44, is fixedly connected with a spring with the inner wall of the end of the sliding groove 44, the test board 34 is provided with a plugging hole 45 in a penetrating manner, the plugging hole 45 is vertically arranged, the driving block 43 slides in the plugging hole 45, the length dimension of the driving block 43 is equal to the depth dimension of the plugging hole 45, the side wall of the driving block 43 is fixedly connected with a limiting block 42, the side wall of the plugging hole 45 is provided with limiting grooves, both ends of the limiting grooves are closed, the limiting block 42 slides in the limiting grooves, under the matching effect of the limiting block 42 and the limiting grooves, the limiting block 43 is prevented from falling from the plugging hole 45, the sliding block 39 is elastically arranged on the upper surface of the test board 34, the test board 34 is fixedly connected with a sliding bar for sliding the sliding block 39, the sliding bar 39 is sleeved outside the sliding bar, and the sliding bar 39 is also elastically connected with the sliding bar through the spring, and the sliding bar 39 is elastically connected with the sliding bar; the movement between the test board 34 and the bracket 21 is also realized by adopting an electric push rod, and the distance of the movement of the test board 34 is a designated distance, namely, when the detection rod 24 detects that the position of the door panel to be welded is horizontal, the test board 34 is moved downwards until one of the sliding blocks 39 moves.
When the test plate 34 moves downwards and moves to a designated position, the test rod 35 is abutted against the end part of the driving block 43, the driving block 43 is completely extruded into the inserting hole 45, the inserting block 40 is completely moved into the sliding groove 44, the sliding block 39 starts sliding along the sliding rod, the sliding block 39 is driven to move towards the battery 36, when one sliding block 39 starts moving, the movement of the test plate is stopped, if the other sliding block 39 also starts moving, the wiring lug 38 is abutted against the negative electrode of the battery 36, the lamp holder of the lamp bulb is abutted against the positive electrode of the battery 36, and the lamp bulb emits bright light, namely, the two door plates are level; if the other slide 39 is not moving, the bulb will not emit light, i.e. the two door panels are not in a flush state, and the relative positions of the two door panels need to be adjusted until flush.
The implementation principle of the automatic welding tool for the vehicle door assembly is as follows: after the door plate is extruded in the molding part 4, the molding part 4 forms the shape of the door plate, the shapes of different door plates are matched, the welding seat 2 is not required to be replaced, the polyurethane is only required to be softened by the softening mechanism when the polyurethane is replaced, the molding part 4 is convenient to replace, and then the door plate with other shapes can be re-matched.
When the door plate is shaped in the shaping part 4, whether the position to be detected of the door plate is horizontal or not is required to be detected, when the reaction rod 27 moves into the marking hole 28, in the process of detecting whether the door plate is horizontal or not, the relative position between the reaction rod 27 and the marking cylinder 26 is not changed, the opening of the reaction hole 33 is attached to the inner wall of the marking cylinder 26 in an initial state, when the reaction rod 27 abuts against the marking plate 25 and the reaction rod 27 is extruded towards the inside of the marking cylinder 26, the reaction hole 33 is communicated with the storage hole 32, oxygen in air enters into the storage hole 32, reduced iron powder and oxygen are subjected to oxidation reaction, a large amount of heat is generated at the moment, the temperature sensor 30 monitors that the temperature is changed, the buzzer 31 is triggered to start to work, and the buzzer 31 sounds, so that the position to be welded of the door plate is not horizontal is proved.
When the test board 34 moves downwards and moves to a designated position, the test rod 35 is abutted against the end part of the driving block 43, the driving block 43 is completely extruded into the inserting hole 45, the inserting block 40 completely moves into the sliding groove 44, the sliding block 39 starts sliding along the sliding rod, the sliding block 39 is driven to move towards the battery 36, when one sliding block 39 starts moving, the movement of the test board is stopped, and when the other sliding block 39 also starts moving, the lug 38 is abutted against the negative electrode of the battery 36, the lamp holder of the lamp bulb is abutted against the positive electrode of the battery 36, and the lamp bulb emits bright light, namely two door plates are flush; if the other slide 39 is not moving, the bulb will not emit light, i.e. the two door panels are not in a flush state, and the relative positions of the two door panels need to be adjusted until flush.
When the polyurethane needs to be solidified, the water pump 8 pumps the water in the water supply tank 7 to the position of the heating pipe 6, at the moment, heat transfer is carried out between the water and the heating pipe 12, the phase-change material starts to release the temperature in the environment with low temperature, the phase-change material transfers the heat to the water, after the temperature of the water rises, the water flows into the cooling tank 5 from the hot water hole 9, at the moment, the dry ice can greatly accelerate the sublimation process of the dry ice when encountering the hot water, the sublimation process of the dry ice rapidly cools the cooling tank 5, the cooling tank 5 rapidly cools the polyurethane material in welding, and after the polyurethane is solidified, the molding part 4 forms a mold matched with the door plate.
Unless defined otherwise, technical or scientific terms used herein should be given the ordinary meaning as understood by one of ordinary skill in the art to which this application belongs. The terms "first," "second," "third," and the like in the description and in the claims, are not used for any order, quantity, or importance, but are used for distinguishing between different elements. The terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one. The word "comprising" or "comprises", and the like, is intended to mean that elements or items that are present in front of "comprising" or "comprising" are included in the word "comprising" or "comprising", and equivalents thereof, without excluding other elements or items. "upper", "lower", "left", "right", etc. are used merely to denote relative positional relationships, which may also change accordingly when the absolute position of the object to be described changes.
The foregoing are all optional embodiments of the present application, and are not intended to limit the scope of the present application in this way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.
Claims (8)
1. The utility model provides a door assembly automatic weld frock which characterized in that: comprises a base (1), a welding seat (2) rotatably arranged on the base (1) and a fixing device for fixing a door plate;
the welding seat (2) is provided with two welding grooves (3) for placing the door plates, and the welding seat (2) is internally provided with adjusting devices for adapting to different door plate shapes and detecting devices for detecting whether the positions of the door plates to be welded are horizontal or not;
the adjusting device comprises a shaping part (4) which is matched with different door plate shapes, a cooling mechanism for solidifying the shaping part (4) and a heating mechanism for softening the shaping part (4), and a lubrication mechanism which is convenient for taking out the softened shaping part (4) is arranged in the welding groove (3) by the welding seat (2); the cooling mechanism comprises a cooling box (5) filled with dry ice, a heating pipe (6) used for accelerating sublimation of the dry ice, a heating assembly used for heating water and a water supply tank (7), wherein the water supply tank (7) is fixed on a base (1), a water pump (8) is further arranged in the water supply tank (7), the output end of the water pump (8) is connected with the end part of the heating pipe (6), the heating pipe (6) is fixed in the cooling box (5), a cavity is formed in the welding seat (2), the cooling box (5) is fixed on the outer wall of the welding groove (3), a plurality of hot water holes (9) are formed in the side wall, located below, of the heating pipe (6), and one end, far away from the water pump (8), of the heating pipe (6) is in a closed arrangement. The heating mechanism comprises a plurality of sleeves (10) and a plurality of heating pieces (11) fixed in the sleeves (10), the heating assembly comprises a heating pipe (12) used for filling phase change materials, a plurality of heating cavities are formed in the position, close to the welding groove (3), of the welding seat (2), the sleeves (10) are fixed in the heating cavities, one ends of the heating pipes (12) extend into the ends of the sleeves (10) to be abutted, and the other ends of the heating pipes extend into the heating pipes (6).
2. The automatic welding fixture for a vehicle door assembly according to claim 1, wherein: the lubricating mechanism comprises a film (13) movably arranged at the bottom of the welding groove (3), a traction assembly used for traction of the movement of the film (13) and a coating assembly used for coating the film (13) with an anti-sticking agent, wherein a blanking opening (14) is formed in the side wall of the welding groove (3), a control board (15) is arranged at the position of the blanking opening (14) in a sliding mode of the welding seat (2), the bottom wall of the welding groove (3) gradually reduces along the height of the direction of the blanking opening (14), and the movement direction of the film (13) is perpendicular to the flow direction of the shaping part (4) after softening.
3. The automatic welding fixture for a vehicle door assembly according to claim 2, wherein: the coating assembly comprises a coating box (16) filled with an anti-sticking agent, a coating roller (17) and a squeeze roller (18), the traction assembly comprises two winding rollers (19) and two servo motors (20), the coating box (16) is fixed on the inner wall of a cavity of the welding seat (2), the coating roller (17) is rotationally arranged in the coating box (16), the squeeze roller (18) is rotationally arranged on the inner wall of the welding seat (2), the film (13) passes through the coating roller (17) and the squeeze roller (18), the winding rollers (19) are rotationally arranged in the cavity of the welding seat (2), and the servo motors (20) are used for driving the winding rollers (19) to rotate.
4. The automatic welding fixture for a vehicle door assembly according to claim 1, wherein: the detection device comprises a support (21) arranged on the welding seat (2), a support frame (22) arranged on the support (21) in a lifting manner, a detection frame (23) arranged on the support frame (22) in a sliding manner, a detection rod (24) arranged on the detection frame (23) in an elastic manner, a marking mechanism for marking whether the door plates are to be welded or not and a test mechanism for detecting whether the two door plates are positioned on the same plane, wherein the detection rod (24) is arranged vertically, and one end of the detection rod (24) in butt joint with the door plates is arranged at the tip.
5. The automatic welding fixture for a vehicle door assembly as defined in claim 4, wherein: the marking mechanism comprises a marking plate (25), a marking cylinder (26), a reaction rod (27) which is elastically arranged on the marking cylinder, and a reaction assembly, wherein the marking plate (25) is fixed on the supporting frame (22), a marking hole (28) which is matched with the reaction rod (27) is formed in the marking plate (25), the distance from the reaction rod (27) to the bottom of the marking hole (28) in the initial position is larger than the distance from the detection rod (24) to the door plate, and the reaction assembly is used for marking whether the reaction rod (27) moves into the marking hole (28).
6. The automatic welding fixture for a vehicle door assembly according to claim 5, wherein: the reaction component comprises a reduced iron powder bag (29), a temperature sensor (30) and a buzzer (31) electrically connected with the temperature sensor (30), a storage hole (32) for storing the reduced iron powder bag (29) is formed in the side wall of the reaction rod (27), a reaction hole (33) is formed in the side wall of the marking cylinder (26), and the reaction hole (33) and the storage hole (32) are dislocated when the marking cylinder (26) and the marking plate (25) are at the initial positions.
7. The automatic welding fixture for a vehicle door assembly as defined in claim 6, wherein: the test mechanism comprises a test plate (34), two test rods (35), a battery (36), a bulb, an electric wire (37), a wiring lug (38), two sliding blocks (39) and a trigger assembly for triggering the sliding blocks (39) to move, wherein the test plate (34), the two test rods (35) are respectively fixedly connected with the top ends of the two detection rods (24), the battery (36) is fixed on the upper surface of the test plate (34), one end of the electric wire (37) is connected with the wiring lug (38), the other end of the electric wire is connected with a lamp holder of the bulb, the two sliding blocks (39) are respectively fixedly connected with the bulb and the wiring lug (38), and the wiring lug (38) corresponds to the negative electrode of the battery (36) and the lamp holder of the bulb corresponds to the positive electrode of the battery (36).
8. The automatic welding fixture for a vehicle door assembly as defined in claim 7, wherein: the trigger assembly comprises an electromagnet (41), a plug-in block (40) and a driving block (43) which are fixed on the detection frame (23), wherein the electromagnet (41) is used for adsorbing and corresponding to the detection rod (24), a sliding groove (44) is formed in one end, which is abutted to the sliding block (39) and the test plate (34), of the trigger assembly, the plug-in block (40) is elastically arranged in the sliding groove (44), the test plate (34) is provided with a plug-in hole (45) in a penetrating manner, the driving block (43) slides in the plug-in hole (45), the length of the driving block (43) is equal to the depth of the plug-in hole (45), and the sliding block (39) is also elastically arranged on the upper surface of the test plate (34).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311670241.2A CN117381298A (en) | 2023-12-07 | 2023-12-07 | Automatic welding tool for vehicle door assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311670241.2A CN117381298A (en) | 2023-12-07 | 2023-12-07 | Automatic welding tool for vehicle door assembly |
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| Publication Number | Publication Date |
|---|---|
| CN117381298A true CN117381298A (en) | 2024-01-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311670241.2A Pending CN117381298A (en) | 2023-12-07 | 2023-12-07 | Automatic welding tool for vehicle door assembly |
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| Country | Link |
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| CN (1) | CN117381298A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117718357A (en) * | 2024-02-07 | 2024-03-19 | 武汉瑞普汽车部件有限公司 | Detection device for stamping die of automobile high-strength plate |
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