Hot air welding machine for automobile interior and exterior trims

Abstract

The present invention relates to a hot air welding machine for automobile interior and exterior trims, comprising a chassis, a loading area, a low-profile welding area and a high-profile welding area which are respectively arranged in sequence in the chassis, a profiling die which is horizontally arranged in the chassis for placing automobile interior and exterior trims, and a translation mechanism which is arranged at the bottom of the chassis for driving the profiling die to move; the low-profile welding area and the high-profile welding area both comprise a hot air softening mechanism for blowing soft the welding parts of the automobile interior and exterior trims, a hot air lifting mechanism for driving the hot air softening mechanism to rise and fall, a side push curing mechanism which is arranged between the hot air softening mechanism and the profiling die for bending and curing the softened welding parts, and a side push lifting mechanism for driving the side push curing mechanism to rise and fall; the present invention integrates low-profile welding and high-profile welding into one, and can respectively weld high-profile and low-profile automobile interior and exterior trims, which not only greatly improves work efficiency and reduces labor intensity, but also can greatly reduce floor space, thereby greatly reducing production costs.

Description

Technical Field

[0001] The invention relates to the technical field of automobile processing, in particular to a hot air welding machine for automobile interior and exterior trims. Background Art

[0002] With the development of the automobile industry, automobile bumpers, as an important safety device, have also been on the road of innovation. In addition to maintaining the original protection function, the front and rear bumpers of today's cars must also pursue harmony and unity with the body shape and pursue their own lightweight. In order to achieve this goal, the front and rear bumpers of cars are currently made of plastic, which people call plastic bumpers.

[0003] Most existing plastic bumper welding processes involve surface-to-surface welding or welding columns / sheets through holes, which has limitations on component structure and shape design. Furthermore, since some automobile companies have high- and low-end models, the welding positions of high- and low-end bumpers are different. High-end bumpers require all welds to be welded, while low-end bumpers only require welding of some welds on both sides. Currently, high- and low-end bumper welding is performed using two separate devices, which is not only inefficient but also requires manual handling, resulting in high labor intensity. Furthermore, the two devices occupy factory space, significantly increasing production costs. Summary of the Invention

[0004] The purpose of the present invention is to provide a hot air welding machine for automobile interior and exterior trims in order to overcome the deficiencies of the prior art.

[0005] To achieve the above-mentioned object, the present invention adopts the following technical solution: a hot air welding machine for automobile interior and exterior trims, comprising a chassis, a loading area, a low-profile welding area, and a high-profile welding area respectively disposed in the chassis and arranged in sequence from front to back, a profiling die disposed horizontally in the chassis for placing the bumper, and a translation mechanism disposed at the bottom of the chassis for driving the profiling die to move between the loading area, the low-profile welding area, and the high-profile welding area;

[0006] The low-profile welding area and the high-profile welding area each include a hot air softening mechanism disposed above the profiling die for softening the bumper welding portion, a hot air lifting mechanism disposed in the chassis for driving the hot air softening mechanism to rise and fall, a side push curing mechanism disposed between the hot air softening mechanism and the profiling die for bending and curing the softened welding portion, and a side push lifting mechanism disposed in the chassis for driving the side push curing mechanism to rise and fall.

[0007] The hot air softening mechanism and the side push curing mechanism in the low-profile welding area are each provided with two groups, and are respectively located on both sides of the bumper;

[0008] A set of hot air softening mechanism and a set of side push curing mechanism are provided in the high-profile welding area and are located in the middle of the bumper.

[0009] Preferably, the hot air softening mechanism includes a horizontally placed support plate and a plurality of hot air devices vertically arranged on the support plate and corresponding to the positions to be welded on the bumper.

[0010] Preferably, the hot air lifting mechanism includes a plurality of guide rods vertically arranged in the chassis and respectively located on both sides of the translation mechanism, a hot air lifting frame horizontally arranged above the profiling mold and sleeved on the plurality of guide rods, and two hot air lifting cylinders vertically arranged in the chassis and respectively located on both sides of the translation mechanism for driving the hot air lifting frame to lift; the support plate is horizontally arranged below the hot air lifting frame and is connected by a plurality of vertically placed connecting columns.

[0011] Preferably, the side push curing mechanism includes two groups of horizontally and parallelly placed slide rail assemblies, horizontally placed side push plates with two groups of slide rail assemblies arranged on both sides, horizontally placed side push cylinders for driving the side push plates to move horizontally, and multiple side push blocks vertically arranged on the side push plates and located on one side of the hot air device; the side push plates are provided with multiple first avoidance holes for facilitating the passage of multiple hot air devices.

[0012] Preferably, the side-pushing lifting mechanism includes a side-pushing lifting frame horizontally arranged between the hot air lifting frame and the profiling mold and sleeved on multiple guide rods, two side-pushing lifting cylinders vertically arranged in the chassis and respectively located on both sides of the translation mechanism for driving the side-pushing lifting frame to rise and fall; the stroke of the side-pushing lifting cylinder is smaller than the stroke of the hot air lifting cylinder; the two groups of slide rail assemblies are respectively arranged on both sides of the bottom of the side-pushing lifting frame.

[0013] Preferably, the side push lifting frame is provided with a pressing mechanism that passes through the side push curing mechanism and is used to fix the bumper on the profiling mold; the pressing mechanism includes a mounting plate horizontally arranged on the side push lifting frame and located above the side push plate, and a plurality of pressing rods vertically arranged on the mounting plate and passing through the side push plate and staggered with the side push block; the mounting plate is provided with a plurality of second avoidance holes that facilitate the passage of multiple hot air devices.

[0014] Preferably, each of the downward pressing rods includes a telescopic rod vertically arranged on the mounting plate, a pressure head arranged at the bottom of the telescopic rod, and a spring sleeved on the telescopic rod for driving the pressure head to move downward.

[0015] Preferably, the pressure head is made of rubber material.

[0016] Preferably, the translation mechanism includes a plurality of guide rails horizontally arranged at the bottom of the chassis and placed from front to back, sliders respectively arranged on the plurality of guide rails, a translation plate horizontally placed and respectively arranged on the plurality of sliders, a sliding frame arranged behind the translation plate and slidably arranged on the guide rails, a first translation cylinder horizontally arranged on the sliding frame and placed from front to back for driving the translation plate to move between the loading area and the low-profile welding area, a second translation cylinder horizontally arranged in the chassis and located below the first translation cylinder for driving the sliding frame to drive the translation plate to move between the low-profile welding area and the high-profile welding area; the profiling mold is horizontally arranged on the translation plate.

[0017] Preferably, positioning assemblies are provided on the low-profile welding area and the high-profile welding area of ​​the two outermost guide rails; each group of the positioning assemblies includes a positioning seat arranged on the side of the guide rail, a positioning hole vertically arranged on the positioning seat, and a positioning cylinder vertically arranged at the bottom of the translation plate and the driving end of which can be extended into the positioning hole.

[0018] Due to the application of the above technical solution, the present invention has the following advantages compared with the prior art:

[0019] 1. The present invention first softens the bumper welding part through a hot air softening mechanism, and then bends and solidifies the softened welding part through a side-push solidifying mechanism. This method is not only suitable for surface-to-surface welding or welding columns / sheet reinforcement through holes, but also can achieve the welding requirement of overlapping the welded sheet reinforcement in a specified direction, which has a wider range of applications and can reduce springback deformation after welding.

[0020] 2. The present invention integrates low-profile welding and high-profile welding into one, and can weld high-profile and low-profile bumpers respectively, which not only greatly improves work efficiency and reduces labor intensity, but also greatly reduces the floor space, thereby greatly reducing production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The technical solution of the present invention will be further described below with reference to the accompanying drawings:

[0022] Attachment Figure 1 This is a schematic structural diagram of the hot air welding machine for automobile interior and exterior trims according to the present invention;

[0023] Attachment Figure 2 This is a schematic diagram of the structure of the present invention after removing the box body;

[0024] Attachment Figure 3 It is a structural schematic diagram of the low-profile welding area in the present invention;

[0025] Attachment Figure 4 for Figure 3 The structural diagram of the two sets of hot air softening mechanisms;

[0026] Attachment Figure 5 for Figure 3Schematic diagram of the structure of the two sets of side push curing mechanisms;

[0027] Attachment Figure 6 for Figure 3 Schematic diagram of the structure of the single-group side push curing mechanism;

[0028] Attachment Figure 7 for Figure 3 Structural diagram of the middle and lower pressure mechanism;

[0029] Attachment Figure 8 This is a schematic structural diagram of the high-profile welding area in the present invention;

[0030] Attachment Figure 9 Schematic diagram of the structure of the translation mechanism in the present invention;

[0031] Attachment Figure 10 Schematic diagram of the position of the positioning component in the present invention.

[0032] Among them: 1. Chassis; 11. Loading area; 12. Low-profile welding area; 13. High-profile welding area; 2. Profiling mold; 3. Translation mechanism; 31. Guide rail; 32. Slider; 33. Translation plate; 34. Sliding frame; 35. First translation cylinder; 36. Second translation cylinder; 4. Hot air softening mechanism; 41. Support plate; 42. Hot air device; 43. Connecting column; 5. Hot air lifting mechanism; 51. Guide rod; 52. Hot air lifting frame; 53. Hot air lifting cylinder ;6. Side-push curing mechanism;61. Slide rail assembly;62. Side-push plate;63. Side-push cylinder;64. Side-push block;65. First avoidance hole;7. Side-push lifting mechanism;71. Side-push lifting frame;72. Side-push lifting cylinder;8. Pressing mechanism;81. Mounting plate;82. Pressing rod;821. Telescopic rod;822. Pressure head;823. Spring;83. Second avoidance hole;9. Positioning assembly;91. Positioning seat;92. Positioning hole;93. Positioning cylinder. DETAILED DESCRIPTION

[0033] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0034] Attachment Figure 1-10 The hot air welding machine for automotive interior and exterior trims of the present invention comprises a chassis 1, a loading area 11, a low-profile welding area 12, and a high-profile welding area 13 disposed in the chassis 1 and arranged in sequence from front to back, a profiling die 2 disposed horizontally in the chassis 1 for placing the bumper, and a translation mechanism 3 disposed at the bottom of the chassis 1 for driving the profiling die 2 to move between the loading area 11, the low-profile welding area 12, and the high-profile welding area 13;

[0035] The low-profile welding area 12 and the high-profile welding area 13 each include a hot air softening mechanism 4 disposed above the profiling die 2 for softening the bumper welding portion, a hot air lifting mechanism 5 disposed in the chassis 1 for driving the hot air softening mechanism 4 to rise and fall, a side push curing mechanism 6 disposed between the hot air softening mechanism 4 and the profiling die 2 for bending and curing the softened welding portion, and a side push lifting mechanism 7 disposed in the chassis 1 for driving the side push curing mechanism 6 to rise and fall.

[0036] The hot air softening mechanism 4 and the side push curing mechanism 6 in the low-profile welding area 12 are each provided with two groups, and are respectively located on both sides of the bumper;

[0037] The hot air softening mechanism 4 and the side push curing mechanism 6 are each provided in a group in the high-profile welding area 13 and are located in the middle of the bumper.

[0038] During operation: the profiling mold 2 is located in the loading area 11 under the drive of the translation mechanism 3, which is convenient for the staff to place the bumper on the profiling mold 2, and then the profiling mold 2 is moved to the low-profile welding area 12 under the drive of the translation mechanism 3, and the two sides of the bumper are welded at the same time through the two groups of hot air softening mechanisms 4 and the side push curing mechanism 6; if it is a low-profile bumper, the welding is completed, and the translation mechanism 3 drives the profiling mold 2 to be located in the loading area 11, removes the welded low-profile bumper, and replaces it with the bumper to be welded; if it is a high-profile bumper, the translation mechanism 3 drives the profiling mold 2 to be located in the high-profile welding area 13, and welds the middle part of the bumper through a group of hot air softening mechanisms 4 and the side push curing mechanism 6. When welding is completed, the translation mechanism 3 drives the profiling mold 2 to be located in the loading area 11, removes the welded high-profile bumper, and replaces it with the bumper to be welded.

[0039] Furthermore, the hot air softening mechanism 4 includes a horizontally placed support plate 41 and multiple hot air devices 42 vertically arranged on the support plate 41 and corresponding to the positions to be welded on the bumper; when working: first, the support plate 41 is driven by the hot air lifting mechanism 5 to drive the multiple hot air devices 42 to move downward until the air outlet of the hot air device 42 is 10-20 mm away from the position to be welded on the bumper, and then the multiple hot air devices 42 are started at the same time, and the high-temperature hot air blown out by the multiple hot air devices 42 softens the positions to be welded on the bumper, and finally, the support plate 41 is driven by the hot air lifting mechanism 5 to drive the multiple hot air devices 42 to move upward and return to the initial position.

[0040] Furthermore, the hot air lifting mechanism 5 includes a plurality of guide rods 51 vertically arranged in the chassis 1 and respectively located on both sides of the translation mechanism 3, a hot air lifting frame 52 horizontally arranged above the profiling mold 2 and sleeved on the plurality of guide rods 51, and two hot air lifting cylinders 53 vertically arranged in the chassis 1 and respectively located on both sides of the translation mechanism 3 for driving the hot air lifting frame 52 to move up and down; the support plate 41 is horizontally arranged below the hot air lifting frame 52 and is connected by a plurality of vertically placed connecting columns 43; when working: the hot air lifting frame 52 is driven by the two hot air lifting cylinders 53 to move up and down along the plurality of guide rods 51, thereby driving the hot air softening mechanism 4 to move up and down.

[0041] Furthermore, the side push curing mechanism 6 includes two groups of horizontal and parallel slide rail assemblies 61, side push plates 62 placed horizontally and arranged on both sides of the two groups of slide rail assemblies 61, side push cylinders 63 placed horizontally for driving the side push plates 62 to move horizontally, and multiple side push blocks 64 vertically arranged on the side push plates 62 and located on one side of the hot air device 42; the side push plates 62 are provided with multiple first avoidance holes 65 for convenient passage of multiple hot air devices 42; when the hot air softening mechanism 4 softens the bumper welding part and returns to the initial position; first, the side push lifting mechanism 7 drives the side push plate 62 to drive multiple side push blocks 64 to move downward until the bottom of the side push block 64 is 1-2 mm away from the welding position on the bumper, and then the side push cylinder 63 drives the side push plate 62 to drive multiple side push blocks 64 to bend and solidify the softened welding part to achieve welding, and finally, the side push lifting mechanism 7 drives the side push plate 62 to drive multiple push blocks to move upward and return to the initial position.

[0042] Furthermore, the side-pushing lifting mechanism 7 includes a side-pushing lifting frame 71 horizontally arranged between the hot air lifting frame 52 and the profiling mold 2 and sleeved on the multiple guide rods 51, and two side-pushing lifting cylinders 72 vertically arranged in the chassis 1 and respectively located on both sides of the translation mechanism 3 for driving the side-pushing lifting frame 71 to rise and fall; the stroke of the side-pushing lifting cylinder 72 is smaller than the stroke of the hot air lifting cylinder 53; the two groups of slide rail assemblies 61 are respectively arranged on both sides of the bottom of the side-pushing lifting frame 71; when working: the side-pushing lifting frame 71 is driven by the two side-pushing lifting cylinders 72 to move up and down along the multiple guide rods 51, thereby driving the side-pushing curing mechanism 6 to rise and fall.

[0043] Furthermore, the side push lifting frame 71 is provided with a pressing mechanism 8 that passes through the side push curing mechanism 6 and is used to fix the bumper on the profiling mold 2; the pressing mechanism 8 includes a mounting plate 81 horizontally arranged on the side push lifting frame 71 and located above the side push plate 62, and a plurality of pressing rods 82 vertically arranged on the mounting plate 81 and passing through the side push plate 62 and staggered with the side push blocks 64; the mounting plate 81 is provided with a plurality of second avoidance holes 83 for facilitating the passage of a plurality of hot air devices 42; when the side push lifting mechanism 7 drives the side push plate 62 to drive the plurality of side push blocks 64 to move downward, the plurality of pressing rods 82 first contact the bumper and fix the bumper on the profiling mold 2, thereby preventing the side push curing mechanism 6 from bending and curing the softened welding part so that the bumper position shifts laterally, thereby improving the welding quality.

[0044] Furthermore, each of the lower pressure rods 82 includes a telescopic rod 821 vertically arranged on the mounting plate 81, a pressure head 822 arranged at the bottom of the telescopic rod 821, and a spring 823 sleeved on the telescopic rod 821 for driving the pressure head 822 to move downward; when working: since the pressure head 822 has a telescopic function, it can not only firmly fix the bumper on the contour mold 2, but also reduce the processing accuracy of the lower pressure rod 82.

[0045] Furthermore, the pressure head 822 is made of rubber material, which can effectively prevent the pressure head 822 from crushing the bumper and play a safety protection role.

[0046] Furthermore, the translation mechanism 3 includes a plurality of guide rails 31 horizontally arranged at the bottom of the chassis 1 and placed from front to back, sliders 32 respectively arranged on the plurality of guide rails 31, a translation plate 33 horizontally placed and respectively arranged on the plurality of sliders 32, a sliding frame 34 arranged behind the translation plate 33 and slidingly arranged on the guide rails 31, a first translation cylinder 35 horizontally arranged on the sliding frame 34 and placed from front to back for driving the translation plate 33 to move between the loading area 11 and the low-profile welding area 12, and a second translation cylinder 36 horizontally arranged in the chassis 1 and located below the first translation cylinder 35 for driving the sliding frame 34 to drive the translation plate 33 to move between the low-profile welding area 12 and the high-profile welding area 13; the profiling mold 2 It is horizontally arranged on the translation plate 33; when it is necessary to drive the profiling mold 2 to be located in the loading area 11: the first translation cylinder 35 and the second translation cylinder 36 are both in an extended state, and the profiling mold 2 is located in the loading area 11; when it is necessary to drive the profiling mold 2 to be located in the low-profile welding area 12: the first translation cylinder 35 is in a retracted state, and the second translation cylinder 36 is in an extended state, and the profiling mold 2 is located in the low-profile welding area 12; when it is necessary to drive the profiling mold 2 to be located in the high-profile welding area 13: the first translation cylinder 35 and the second translation cylinder 36 are both in a retracted state, and the profiling mold 2 is located in the high-profile welding area 13, thereby being able to drive the profiling mold 2 to move between the loading area 11, the low-profile welding area 12 and the high-profile welding area 13.

[0047] Furthermore, positioning components 9 are provided on the two outermost guide rails 31 in the low-profile welding area 12 and the high-profile welding area 13; each group of the positioning components 9 includes a positioning seat 91 arranged on the side of the guide rail 31, a positioning hole 92 vertically arranged on the positioning seat 91, and a positioning cylinder 93 vertically arranged at the bottom of the translation plate 33 and the driving end of which can extend into the positioning hole 92; when the translation mechanism 3 drives the profiling mold 2 to be located in the low-profile welding area 12 and the high-profile welding area 13, the positioning cylinder 93 extends into the positioning hole 92, which plays a role of precise positioning and improves the welding accuracy.

[0048] The above are only specific application examples of the present invention and do not constitute any limitation on the scope of protection of the present invention. Any technical solutions formed by equivalent transformation or equivalent replacement shall fall within the scope of protection of the present invention.

Claims

1. A hot air welding machine for automobile interior and exterior trims, characterized by: The system comprises a chassis, a loading area, a low-profile welding area, and a high-profile welding area, which are arranged in the chassis and arranged in sequence from front to back, a profiling die arranged horizontally in the chassis for placing automobile interior and exterior trims, and a translation mechanism arranged at the bottom of the chassis for driving the profiling die to move between the loading area, the low-profile welding area, and the high-profile welding area; The low-profile welding area and the high-profile welding area each include a hot air softening mechanism disposed above the profiling die for softening the welding portion of the interior and exterior trim of the automobile, a hot air lifting mechanism disposed in the chassis for driving the hot air softening mechanism to rise and fall, a side push curing mechanism disposed between the hot air softening mechanism and the profiling die for bending and curing the softened welding portion, and a side push lifting mechanism disposed in the chassis for driving the side push curing mechanism to rise and fall; The hot air softening mechanism and the side push curing mechanism in the low-profile welding area are each provided with two groups, and are respectively located on both sides of the interior and exterior trim of the automobile; The hot air softening mechanism and the side push curing mechanism in the high-profile welding area are each provided with a group and are located in the middle of the interior and exterior trim of the automobile; The hot air softening mechanism includes a horizontally placed support plate and a plurality of hot air devices vertically arranged on the support plate and corresponding to the positions to be welded on the interior and exterior trims of the automobile; The hot air lifting mechanism includes a plurality of guide rods vertically arranged in the chassis and respectively located on both sides of the translation mechanism, a hot air lifting frame horizontally arranged above the profiling mold and sleeved on the plurality of guide rods, and two hot air lifting cylinders vertically arranged in the chassis and respectively located on both sides of the translation mechanism for driving the hot air lifting frame to move up and down; the support plate is horizontally arranged below the hot air lifting frame and is connected by a plurality of vertically placed connecting columns; The side-pushing curing mechanism includes two sets of horizontal and parallel slide rail assemblies, a horizontal side-pushing plate arranged on both sides of the two sets of slide rail assemblies, a horizontal side-pushing cylinder for driving the side-pushing plate to move horizontally, and a plurality of side-pushing blocks vertically arranged on the side-pushing plate and located on one side of the hot air device; the side-pushing plate is provided with a plurality of first avoidance holes for facilitating the passage of the plurality of hot air devices; The side-pushing lifting mechanism includes a side-pushing lifting frame horizontally arranged between the hot air lifting frame and the profiling mold and sleeved on multiple guide rods, two side-pushing lifting cylinders vertically arranged in the chassis and respectively located on both sides of the translation mechanism for driving the side-pushing lifting frame to rise and fall; the stroke of the side-pushing lifting cylinder is smaller than the stroke of the hot air lifting cylinder; the two groups of slide rail assemblies are respectively arranged on both sides of the bottom of the side-pushing lifting frame.

2. The hot air welding machine for automobile interior and exterior trim according to claim 1, characterized in that: The side push lifting frame is provided with a pressing mechanism that passes through the side push curing mechanism and is used to fix the interior and exterior trim of the automobile on the profiling mold; the pressing mechanism includes a mounting plate horizontally arranged on the side push lifting frame and located above the side push plate, and a plurality of pressing rods vertically arranged on the mounting plate and passing through the side push plate and staggered with the side push block; the mounting plate is provided with a plurality of second avoidance holes that facilitate the passage of multiple hot air devices.

3. The hot air welding machine for automobile interior and exterior trim according to claim 2, characterized in that: Each of the downward pressing rods comprises a telescopic rod vertically arranged on the mounting plate, a pressure head arranged at the bottom of the telescopic rod, and a spring sleeved on the telescopic rod for driving the pressure head to move downward.

4. The hot air welding machine for automobile interior and exterior trim according to claim 3, characterized in that: The pressure head is made of rubber material.

5. The hot air welding machine for automobile interior and exterior trim according to any one of claims 1 to 4, characterized in that: The translation mechanism includes multiple guide rails horizontally arranged at the bottom of the chassis and placed from front to back, sliders respectively arranged on the multiple guide rails, a translation plate horizontally placed and respectively arranged on the multiple sliders, a sliding frame arranged behind the translation plate and slidably arranged on the guide rails, a first translation cylinder horizontally arranged on the sliding frame and placed from front to back for driving the translation plate to move between the loading area and the low-profile welding area, a second translation cylinder horizontally arranged in the chassis and located below the first translation cylinder for driving the sliding frame to drive the translation plate to move between the low-profile welding area and the high-profile welding area; the profiling mold is horizontally arranged on the translation plate.

6. The hot air welding machine for automobile interior and exterior trim according to claim 5, characterized in that: Positioning components are provided on the low-profile welding area and the high-profile welding area of ​​the two outermost guide rails; each group of the positioning components includes a positioning seat arranged on the side of the guide rail, a positioning hole vertically arranged on the positioning seat, and a positioning cylinder vertically arranged at the bottom of the translation plate and the driving end of which can extend into the positioning hole.

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