Hot melt welding apparatus and welding method for automotive center consoles

Abstract

The present application relates to the welding technical field of automobile plastic parts, and particularly relates to a hot melt welding equipment and a welding method for an automobile central storage box. The hot melt welding equipment comprises a support, a platform, a pressing mechanism, a welding device, a fixing device for positioning and clamping the plastic assembly, and a turnover mechanism for assisting the loading and unloading of the plastic assembly. The equipment places the plastic assembly on the bottom plate of the fixing device. The positioning block is used to position the plastic assembly, and the clamp is used to clamp. The pressing power cylinder drives the pressing plate to move along the pressing slide rail and approach the platform, and the pressing head is used to apply a pressing force to the plastic assembly. The first welding power cylinder drives the mounting plate to move along the extension direction of the welding slide rail and approach the plastic assembly, and the riveting head of the hot riveting welding assembly is used to complete the riveting operation on the plastic assembly. The equipment improves the connection strength of the plastic assembly after welding, reduces the influence of the thermal stress generated by welding on the design size of the plastic assembly, and further improves the welding efficiency of the plastic assembly.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of welding of automobile plastic parts, and particularly relates to a hot melt welding device and a welding method for an automobile central storage box. BACKGROUND

[0002] At present, automobile interior parts are usually spliced by large plastic parts to realize lightweight of automobile bodies and improve the decorative nature of the automobile interior. In order to further improve the installation efficiency of the automobile body assembly, the pre-installation of the automobile interior parts is completed before entering the assembly workshop. For example, the instrument panel, the interior decorative plate of the door and the glove box and other complex large parts will be spliced together by selecting appropriate welding processes according to the requirements of materials, structures and properties. The conventional plastic welding processes include ultrasonic welding, hot plate welding, vibration friction welding and the like.

[0003] For example, a plastic part automatic ultrasonic-thermal rivet welding device and a welding method thereof are disclosed in Chinese patent document CN108145980B. The device includes a welding tool and a welding machine. When in use, the welding tool enters the welding machine through the rollers on the upper surface of the mold changing trolley, and the lower mold plate is fixed on the workbench, the middle mold plate is fixed on the middle mold plate fixing plate, and the upper mold plate is fixed on the upper mold plate fixing plate. After starting the welding machine, different cylinders drive the middle mold plate fixing plate and the upper mold plate fixing plate to move downward along the guide rail in the welding machine, drive the middle mold plate and the upper mold plate to move downward together, and when the pressing points on the middle mold plate contact and press the plastic part, the ultrasonic welding head and the thermal rivet welding head on the upper mold plate start welding.

[0004] Although the above-mentioned plastic part automatic ultrasonic-thermal rivet welding device reduces the labor intensity of the assembly workers, the ultrasonic welding method is only limited to some plastics with low melting points, and the connection strength of the welding points formed by welding is not high. At the same time, the device is difficult to be applied to the welding between plastic parts with large sizes. For example, in the process of using the ultrasonic welding process for plastic parts with an outer size of more than 250mm*250mm, the welding noise will continuously increase with the increase of the size of the plastic parts.

[0005] For example, a precision plastic welding device is disclosed in Chinese patent document CN108357112A. The device is used for welding and connecting a first plastic part to a second plastic part, and includes a hot melting device, a conveying device, a driving device and a fixing support. The hot melting device has a first hot melting end in contact with the first plastic part and a second hot melting end in contact with the second plastic part. The conveying device picks up the first welding part. The driving device includes a hot melting driver for driving the hot melting device. The hot melting driver includes a connecting plate connected with the hot melting device, a sliding block with a through hole mounted on the connecting plate, a rotating shaft matched with the through hole, and a servo driver driving the rotating shaft to rotate.

[0006] Although the above welding equipment improves the connection strength between the plastic welded parts by improving the welding depth, the equipment lacks the treatment of the thermal stress generated in the welding. The thermal stress generated in the welding process is prone to cause deformation of the plastic welded parts, and it is difficult to ensure the dimensional accuracy of the plastic parts after welding, thereby reducing the yield and increasing the difficulty of vehicle assembly.

[0007] In summary, in the welding process of the automotive interior plastic parts, how to design a welding equipment to improve the connection strength of the plastic parts after welding and improve the dimensional accuracy has become a technical problem to be solved by the technical personnel in the field. SUMMARY

[0008] The purpose of the present application is to provide a welding equipment for the welding process of automotive interior plastic parts, to improve the connection strength of the plastic parts after welding, reduce the influence of the thermal stress generated in the welding on the design size of the plastic parts, and further improve the dimensional accuracy of the plastic parts after welding, further improve the welding efficiency of the plastic parts, and make the plastic parts more silent, environmentally friendly and energy-saving in the whole welding process.

[0009] To achieve the above purpose, the present application adopts the following scheme: a hot melt welding equipment for a central storage box of an automobile is provided, which comprises a support, a platform, a pressing mechanism, a welding device, a fixing device for positioning and clamping plastic components, and a turnover mechanism for assisting the feeding and discharging of plastic components;

[0010] The platform is fixedly installed on the support, and the platform is provided with a welding sliding rail for sliding of the welding device, the welding sliding rail comprises a left sliding rail and a right sliding rail, and the fixing device is located between the left sliding rail and the right sliding rail;

[0011] The fixing device comprises a bottom plate and a positioning block for positioning the plastic components, the positioning block is fixedly installed on the bottom plate, the positioning block is provided with a clamping hole, the clamping hole is provided with a clamp for clamping the plastic components, the bottom plate has a turnover axis, and the turnover end of the bottom plate is provided with a connecting seat;

[0012] The turnover mechanism comprises a turnover base and a turnover power cylinder for driving the bottom plate to rotate around the turnover axis, the fixed end of the turnover power cylinder is hinged with a fixed seat, the piston rod end of the turnover power cylinder is hinged with a connecting piece, the bottom of the fixed seat is fixedly installed on the platform, the connecting piece is fixedly installed on the bottom plate, a pair of turnover bases are fixedly installed on the platform, a turnover shaft is arranged between the pair of turnover bases, and the turnover shaft is connected with the connecting seat;

[0013] The welding device comprises a hot riveting welding assembly, a first welding power cylinder and a mounting plate, the hot riveting welding assembly is fixedly installed on the mounting plate, the bottom of the mounting plate is connected with the welding sliding rail through a welding sliding seat, the first welding power cylinder is fixedly installed on the platform, and the piston rod end of the first welding power cylinder is connected with the mounting plate.

[0014] The pressing mechanism is located above the platform, and the pressing mechanism comprises a pressing plate, a pressing sliding rail and a pressing power cylinder for driving the pressing plate to slide along the pressing sliding rail, the pressing sliding rail is fixedly installed on the platform, and the extension direction of the pressing sliding rail is perpendicular to the end surface of the platform, the pressing plate is connected with the pressing sliding rail through a pressing sliding seat, the piston rod end of the pressing power cylinder is connected with the pressing plate, and the bottom of the pressing plate is provided with a pressing head.

[0015] As preferred, the platform is provided with a welding port between the left sliding rail and the right sliding rail, the hot riveting welding assembly is arranged in the welding port, the hot riveting welding assembly is fixedly installed on the mounting plate, the bottom of the mounting plate is provided with a second welding power cylinder, the second welding power cylinder is fixedly installed on a support, the piston rod end of the second welding power cylinder is connected with the bottom of the mounting plate, the bottom of the platform is provided with a guide mechanism for ensuring the movement accuracy of the second welding power cylinder, and the bottom plate of the fixing device is provided with a through hole for the hot riveting welding assembly to pass through. In this way, the hot melt welding equipment can not only implement hot riveting welding on the welding points on the left side and the right side of the plastic assembly, but also implement hot riveting welding on the welding points on the bottom of the plastic assembly, thereby further expanding the use range of the hot melt welding equipment, and the welding points on the bottom are added for the same plastic assembly, which is beneficial to further improve the connection strength of the plastic assembly after welding.

[0016] As preferred, the hot riveting welding assembly is a non-contact infrared plastic hot melt welding head. In this way, the rivet column on the plastic assembly is heated by using non-contact infrared focusing radiation, the locking rivet head is formed after stamping, and the locking rivet head is quickly cooled by compressed air, which is beneficial to reduce the thermal stress of the plastic assembly after welding, reduce the deformation of the plastic assembly, and further improve the yield.

[0017] As preferred, the turnover power cylinder is an oil cylinder or an air cylinder. Since the movement accuracy of the turnover mechanism is not high when the plastic assembly is placed, the oil cylinder or the air cylinder is selected for the turnover power cylinder, which is beneficial to reduce the cost of the equipment.

[0018] As preferred, the platform is provided with a fence, the fence is arranged along the outer side edge of the platform to enclose a machining area, the fence has an opening for the plastic assembly to enter and exit the machining area, and a safety grating is arranged at the opening. In this way, when the hot melt welding equipment is working, if an object enters the machining area through the safety grating, the equipment will be stopped urgently, and the safety performance of the equipment is further improved.

[0019] As preferred, a column is arranged on the platform, a first detection sensor for detecting the rotating position of the turnover mechanism is arranged on the column, and a second detection sensor and a third detection sensor for detecting the outline of the plastic assembly are arranged on the bottom plate of the fixing device. In this way, the position of the turnover mechanism is detected by the first detection sensor, so that it can be determined in time whether the hot melt welding equipment is in a working state, which is conducive to reminding the operator to load or unload in time, facilitating the continuity of hot melt welding processing, and the edge size of the plastic assembly is detected by the second detection sensor and the third detection sensor, which is conducive to comparing the size error between the plastic assembly before hot melt welding and the plastic assembly after hot melt welding, reducing the manual rechecking process, and further improving the efficiency of hot melt welding.

[0020] As preferred, the turnover mechanism has a first station for placing the plastic assembly and a second station for welding the plastic assembly. In the first station, the lower pressing cylinder drives the pressing plate to move away from the platform along the extension direction of the lower pressing slide rail, and the turnover cylinder drives the bottom plate to rotate upwards relative to the platform. In the second station, the lower pressing cylinder drives the pressing plate to apply a pressing force to the plastic assembly.

[0021] As preferred, the plastic assembly comprises a main panel, a left side plate and a right side plate, a rivet column is arranged on the side wall of the main panel, mounting holes matched with the rivet column are arranged on the left side plate and the right side plate, and a reinforcing plate is arranged at the front end of the main panel. In this way, the disassembly of parts is optimized during design, which is conducive to the matching of the plastic assembly with the hot melt welding equipment.

[0022] The present application also provides a welding method using the hot melt welding equipment for the automobile central storage box, which comprises the following steps: loading the plastic assembly on the bottom plate of the fixing device, clamping the plastic assembly by the clamp after positioning the plastic assembly by the positioning block, driving the pressing plate to move towards the platform along the extension direction of the lower pressing slide rail by the lower pressing cylinder, applying a pressing force to the plastic assembly by the pressing head, driving the mounting plate to move towards the plastic assembly along the extension direction of the welding slide rail by the first welding cylinder, and completing the riveting operation by the riveting head of the hot riveting assembly.

[0023] As preferred, the riveting operation comprises: the riveting head of the hot riveting assembly applies a pressing force to the plastic assembly, the rivet column is heated by laser radiation inside the hot riveting assembly, and the punch of the hot riveting assembly punches the rivet column to form a locking rivet head.

[0024] The hot melt welding equipment and the welding method for the automobile central storage box provided by the present application have the following outstanding substantial features and significant progress compared with the prior art:

[0025] 1. The hot melt welding equipment for the automobile central storage box utilizes the positioning block and the clamp in the fixing device to respectively implement positioning and clamping on the plastic assembly, the lower pressing cylinder drives the pressing plate to apply lower pressing force through the pressing head, and in the process of hot rivet welding, the first welding power cylinder drives the mounting plate to apply pressing force on the plastic assembly through the hot rivet welding assembly, which is beneficial to improve the connection strength of the plastic assembly after welding, greatly reduces the influence of thermal stress generated by welding on the design size of the plastic assembly, and improves the size accuracy of the plastic assembly after welding;

[0026] 2. The hot melt welding equipment for the automobile central storage box is provided with a turnover mechanism, the turnover cylinder drives the bottom plate to rotate around the turnover axis, assists the feeding and discharging of the plastic assembly, when feeding and discharging, the lower pressing cylinder drives the pressing plate to move away from the platform along the extension direction of the lower pressing slide rail, and the turnover cylinder drives the bottom plate to rotate upwards above the platform, which is convenient for the operation of the operator, and further improves the processing efficiency of the plastic assembly in the hot melt welding process. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 is a perspective structural schematic view of a hot melt welding equipment for an automobile central storage box in the embodiment of the present application;

[0028] Figure 2 is Figure 1 a front view of

[0029] Figure 3 is Figure 1 a left view of

[0030] Figure 4 is Figure 2 a sectional view of A-A in

[0031] Figure 5 is Figure 2 a sectional view of B-B in

[0032] Figure 6 is Figure 3 a sectional view of C-C in

[0033] Figure 7 is Figure 3 a sectional view of D-D in

[0034] Figure 8 is a perspective structural schematic view of a plastic assembly;

[0035] Figure 9 is an assembly schematic view of the plastic assembly;

[0036] Figure 10 is a hot rivet welding working schematic view of a hot rivet welding assembly.

[0037] Reference signs: support 1, platform 2, pressing mechanism 3, welding device 4, fixing device 5, plastic assembly 6, safety grating 7, overturning mechanism 8, first detection sensor 9, second detection sensor 10, third detection sensor 11, pressing plate 31, pressing head 32, pressing slide rail 33, hot riveting welding assembly 41, mounting plate 42, welding slide rail 43, protective cover 44, first welding power cylinder 45, second welding power cylinder 46, guide mechanism 47, bottom plate 51, positioning block 52, clamp 53, left side plate 61, right side plate 62, main panel 63, reinforcing plate 64, riveting column 65, overturning power cylinder 81, connecting piece 82, fixing seat 83, overturning base 84, riveting welding head 411, punch 412. DETAILED DESCRIPTION

[0038] The specific embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0039] As shown in Figures 1-3 A hot melt welding device for a central storage box of an automobile is used to improve the connection strength of a plastic assembly after welding and reduce the influence of thermal stress generated by welding on the design size of the plastic assembly. The hot melt welding device uses positioning blocks and clamps in the fixing device to position and clamp the plastic assembly respectively. A pressing plate driven by a pressing power cylinder applies a pressing force through a pressing head, and in the process of hot riveting welding, a mounting plate driven by a first welding power cylinder applies a pressing force to the plastic assembly through a hot riveting welding assembly. This is conducive to improving the connection strength of the plastic assembly after welding and greatly reducing the influence of thermal stress generated by welding on the design size of the plastic assembly, thereby improving the dimensional accuracy of the plastic assembly after welding.

[0040] As shown in Figure 1 In combination Figure 2 A hot melt welding device for a central storage box of an automobile includes a support 1, a platform 2, a pressing mechanism 3, a welding device 4, a fixing device 5 for positioning and clamping a plastic assembly 6, and an overturning mechanism 8 for assisting in loading and unloading the plastic assembly 6.

[0041] As shown in Figure 4 The platform 2 is fixedly installed on the support 1. The platform 2 is provided with a welding slide rail 43 for sliding of the welding device 4. The welding slide rail 43 includes a left slide rail and a right slide rail. The fixing device 5 is located between the left slide rail and the right slide rail. The support 1 can be made of aluminum alloy profiles and connected by fasteners to form a frame structure.

[0042] The fixing device 5 includes a bottom plate 51 and positioning blocks 52 for positioning the plastic assembly 6. The positioning blocks 52 are fixedly installed on the bottom plate 51. The positioning blocks 52 are provided with clamping holes. The clamping holes are provided with clamps 53 for clamping the plastic assembly 6. The bottom plate 51 has an overturning axis. The overturning end of the bottom plate 51 is provided with a connecting seat.

[0043] As Figure 5 shown, the turnover mechanism 8 includes a turnover base 84 and a turnover power cylinder 81 driving the bottom plate 51 to rotate around the turnover axis. The fixed end of the turnover power cylinder 81 is hinged with a fixed seat 83. The piston rod end of the turnover power cylinder 81 is hinged with a connecting piece 82. The bottom of the fixed seat 83 is fixedly installed on the platform 2. The connecting piece 82 is fixedly installed on the bottom plate 51. A pair of turnover bases 84 are fixedly installed on the platform 2. A turnover shaft is arranged between the pair of turnover bases 84. The turnover shaft is connected with the connecting seat.

[0044] The turnover mechanism 8 has a first station for placing the plastic assembly 6 and a second station for welding the plastic assembly 6. In the first station, the pressing power cylinder drives the pressing plate 31 to move away from the platform 2 along the extension direction of the pressing slide rail 33, and the turnover power cylinder 81 drives the bottom plate 51 to rotate upwards relative to the platform 2; in the second station, the pressing power cylinder drives the pressing plate 31 to apply a pressing force to the plastic assembly 6.

[0045] The turnover power cylinder 81 can be an oil cylinder or an air cylinder. Since the movement precision of the turnover mechanism 8 is not required to be high when the plastic assembly 6 is placed, the oil cylinder or the air cylinder is selected for the turnover power cylinder 81, which is beneficial to reduce the cost of the equipment. The turnover power cylinder 81 can be preferably an air cylinder, which can use the existing air source in the workshop as the power source of the air cylinder, and is more clean and environmentally friendly.

[0046] As Figure 4 shown in combination with Figure 6 shown, the welding device 4 includes a hot rivet welding assembly 41, a first welding power cylinder 45 and a mounting plate 42. The hot rivet welding assembly 41 is fixedly installed on the mounting plate 42. The bottom of the mounting plate 42 is connected with the welding slide rail 43 through a welding slide seat. The first welding power cylinder 45 is fixedly installed on the platform 2. The piston rod end of the first welding power cylinder 45 is connected with the mounting plate 42. The upper side of the hot rivet welding assembly 41 is further provided with a protective cover 44. The protective cover 44 is used to protect the hot rivet welding assembly 41, and also to reduce the influence of light and heat generated during the welding process on the outside.

[0047] As Figure 6 shown in combination with Figure 7 shown, the platform 2 is provided with a welding port. The welding port is located between the left slide rail and the right slide rail. The hot rivet welding assembly 41 is arranged in the welding port. The hot rivet welding assembly 41 is fixedly installed on the mounting plate 42. The bottom of the mounting plate 42 is provided with a second welding power cylinder 46. The second welding power cylinder 46 is fixedly installed on the support 1. The piston rod end of the second welding power cylinder 46 is connected with the bottom of the mounting plate 42. The bottom of the platform 2 is provided with a guide mechanism 47 for ensuring the movement precision of the second welding power cylinder 46. The bottom plate 51 of the fixing device 5 is provided with a through hole for the hot rivet welding assembly 41 to pass through.

[0048] In this way, the hot melt welding device can not only perform hot rivet welding on the welding points on the left and right sides of the plastic component 6, but also perform hot rivet welding on the welding points on the bottom of the plastic component 6, thereby further expanding the use range of the hot melt welding device, and adding the welding points on the bottom for the same plastic component 6, which is conducive to further improving the connection strength of the plastic component 6 after welding.

[0049] As shown in Figure 3 The pressing mechanism 3 is located above the platform 2. The pressing mechanism 3 includes a pressing plate 31, a pressing slide rail 33, and a pressing power cylinder for driving the pressing plate 31 to slide along the pressing slide rail 33. The pressing slide rail 33 is fixedly installed on the platform 2, and the extension direction of the pressing slide rail is perpendicular to the end face of the platform 2. The pressing plate 31 is connected with the pressing slide rail through a pressing slide. The piston rod end of the pressing power cylinder is connected with the pressing plate 31. The bottom of the pressing plate 31 is provided with a pressing head 32.

[0050] The hot rivet welding assembly 41 can be selected as a non-contact infrared plastic hot melt welding head. In this way, the non-contact infrared focused radiation is used to heat the rivet column 65 on the plastic component 6, and after the locking rivet head is formed by stamping, the locking rivet head is quickly cooled by compressed air, which is conducive to reducing the thermal stress of the plastic component 6 after welding, reducing the deformation of the plastic component 6, and further improving the yield.

[0051] As shown in Figure 1 The platform 2 is provided with a fence. The fence is arranged along the outer side of the platform 2 to enclose a processing area. The fence has an opening for the plastic component 6 to enter and exit the processing area. A safety grating 7 is arranged at the opening. In this way, when the hot melt welding device is working, if an object enters the processing area through the safety grating 7, the device will be stopped immediately, thereby further improving the safety performance of the device.

[0052] As shown in Figure 1 In combination with Figure 2 The platform 2 is provided with a stand. The stand is provided with a first detection sensor 9 for detecting the rotating position of the turnover mechanism 8. The bottom plate 51 of the fixing device 5 is provided with a second detection sensor 10 and a third detection sensor 11 for detecting the outline of the plastic component 6. In this way, the position of the turnover mechanism 8 is detected by the first detection sensor 9, so that whether the hot melt welding device is in a working state can be judged in time, which is conducive to reminding the operator to load or unload in time, and is convenient for ensuring the continuity of hot melt welding processing. The outline edge size of the plastic component 6 is detected by the second detection sensor 10 and the third detection sensor 11, which is conducive to comparing the size error between the plastic component 6 before hot melt welding and the plastic component 6 after hot melt welding, reducing the manual rechecking process, and further improving the efficiency of hot melt welding.

[0053] Laser sensors can be selected from the first detection sensor 9, the second detection sensor 10, and the third detection sensor 11. Electric cylinders can be selected from the first welding power cylinder 45, the second welding power cylinder 46, and the downward pressing power cylinder to improve the positional accuracy of the actuator. Alternatively, pneumatic cylinders or hydraulic cylinders can be selected from the first welding power cylinder 45, the second welding power cylinder 46, and the downward pressing power cylinder, depending on actual requirements.

[0054] like Figure 8 Combination Figure 9 As shown, the plastic component 6 includes a main panel 63, a left side panel 61, and a right side panel 62. Rivet posts 65 are provided on the side wall of the main panel 63. Mounting holes matching the rivet posts 65 are provided on both the left side panel 61 and the right side panel 62. A reinforcing plate 64 is provided at the front end of the main panel 63. This design optimizes the disassembly of components and facilitates better compatibility of the plastic component 6 with thermoforming welding equipment.

[0055] This invention also proposes a welding method using the above-mentioned hot melt welding equipment for automotive central storage boxes, comprising: mounting a plastic component 6 on a base plate 51 of a fixing device 5; positioning the plastic component 6 using a positioning block 52; clamping it with a clamp 53; driving a pressure plate 31 along the extension direction of a pressure slide rail 33 to approach the platform 2; and applying a clamping force to the plastic component 6 through a pressure head 32; driving a mounting plate 42 along the extension direction of a welding slide rail 43 to approach the plastic component 6; and having the riveting head 411 of the hot riveting assembly 41 abut against the plastic component 6 to complete the riveting operation.

[0056] The riveting operation includes: the riveting head 411 of the hot riveting assembly 41 presses the plastic component 6, the riveting post 65 is heated by laser radiation inside the hot riveting assembly 41, and the punch 412 of the hot riveting assembly 41 punches the riveting post 65 to form a locking riveting head.

[0057] like Figure 10 As shown, the rivet 65 on the main panel 63 passes through the mounting hole on the left side panel 61. Both the pressure head 32 and the welding head 411 of the hot riveting assembly 41 apply axial force to the plastic component 5, further clamping the plastic component 6. This helps reduce the impact of welding-generated thermal stress on the design dimensions of the plastic component 6, improving the dimensional accuracy of the plastic component 6 after welding. The hot riveting assembly 41 can use infrared focused radiation to heat the rivet 65. After heating for a period of time, the punch 412 inside the hot riveting assembly 41, driven by a pneumatic structure, punches the rivet 65 to form a locking rivet head. Simultaneously, compressed air is introduced into the hot riveting assembly 41 to cool and shape the locking rivet head. This further reduces the impact of thermal stress on the design dimensions of the plastic component 6, greatly improving the connection strength between components in the plastic component 6.

[0058] The present application is not limited to the specific technical solutions described in the above embodiments, and in addition to the above embodiments, the present application can also have other implementation manners. For those skilled in the art, any modifications, equivalent replacements, improvements, etc. formed within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A hot melt welding apparatus for a center console storage bin of an automobile, characterized by, The support, the platform, the pressing mechanism, the welding device, the fixing device for positioning and clamping the plastic assembly and the turnover mechanism for assisting the loading and unloading of the plastic assembly are included. The platform is fixedly installed on the support, and the welding slide rails for the welding device to slide are arranged on the platform. The fixing device is located between the left slide rail and the right slide rail. The fixing device includes a bottom plate and positioning blocks for positioning the plastic assembly, the positioning blocks are fixedly installed on the bottom plate, clamping holes are arranged on the positioning blocks, clamps for clamping the plastic assembly are arranged in the clamping holes, the bottom plate has a turnover axis, and a connecting seat is arranged on the turnover end of the bottom plate. The turnover mechanism includes a turnover base and a turnover power cylinder for driving the bottom plate to rotate around the turnover axis, a fixed seat is hinged to the fixed end of the turnover power cylinder, a connecting piece is hinged to the piston rod end of the turnover power cylinder, the bottom of the fixed seat is fixedly installed on the platform, and the connecting piece is fixedly installed on the bottom plate. The welding device includes a hot riveting welding assembly, a first welding power cylinder and a mounting plate, the hot riveting welding assembly is fixedly installed on the mounting plate, the bottom of the mounting plate is connected with the welding slide rails through a welding slide seat, and the first welding power cylinder is fixedly installed on the platform.

2. The hot melt welding apparatus for a center console storage bin of a vehicle as claimed in claim 1, wherein, The pressing mechanism is located above the platform, and includes a pressing plate, a pressing slide rail and a pressing power cylinder for driving the pressing plate to slide along the pressing slide rail.

3. The hot melt welding apparatus for a center console storage bin of a vehicle as claimed in claim 2, wherein, The platform is provided with a welding port located between the left slide rail and the right slide rail, the hot riveting welding assembly is arranged in the welding port, the hot riveting welding assembly is fixedly installed on the mounting plate, the bottom of the mounting plate is provided with a second welding power cylinder, the second welding power cylinder is fixedly installed on the support, the piston rod end of the second welding power cylinder is connected with the bottom of the mounting plate, the bottom of the platform is provided with a guide mechanism for ensuring the movement accuracy of the second welding power cylinder, and the bottom plate of the fixing device is provided with a through hole for the hot riveting welding assembly to pass through.

4. The hot melt welding apparatus for automotive center console according to claim 1, wherein The turnover power cylinder is an oil cylinder or an air cylinder.

5. The hot melt welding apparatus for automotive center console according to claim 1, wherein, The platform is provided with a fence arranged along the outer side of the platform to enclose a processing area, the fence has an opening for the plastic assembly to enter and exit the processing area, and a safety grating is arranged at the opening.

6. The hot melt welding apparatus for automotive center console according to claim 1, wherein, The platform is provided with a stand column, a first detection sensor for detecting the rotation position of the turnover mechanism is arranged on the stand column, and a second detection sensor and a third detection sensor for detecting the shape of the plastic assembly are arranged on the bottom plate of the fixing device. The turnover mechanism has a first station for placing the plastic assembly and a second station for welding the plastic assembly.

7. The hot melt welding apparatus for automotive center console according to claim 1, wherein The plastic assembly comprises a main panel, a left side plate and a right side plate, a rivet column is arranged on the side wall of the main panel, mounting holes matched with the rivet column are arranged on the left side plate and the right side plate, and a reinforcing plate is arranged at the front end of the main panel.

8. A welding method using the hot melt welding apparatus for an automobile center console according to any one of claims 1 to 7, characterized by, Comprise: After the plastic assembly is positioned on the bottom plate of the fixing device by the positioning block, the clamp is clamped, the pressing plate is driven by the pressing cylinder to move along the extension direction of the pressing slide rail to approach the platform, the pressing force is applied to the plastic assembly by the pressing head, the mounting plate is driven by the first welding cylinder to move along the extension direction of the welding slide rail to approach the plastic assembly, the riveting head of the hot riveting and welding assembly is abutted against the plastic assembly to complete the riveting and welding operation.

9. The welding method of claim 8, wherein, The riveting and welding operation comprises: the riveting head of the hot riveting and welding assembly is used for pressing the plastic assembly, the rivet column is heated by laser radiation in the hot riveting and welding assembly, and the punch of the hot riveting and welding assembly is used for stamping the rivet column to form a locking rivet head.

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