A hot press welding device for interior trim parts

Abstract

The utility model provides an interior trim piece hot pressure welding equipment, including base frame, which is equipped with: preheating module, including preheating table and preheating drive part, the bottom surface of preheating table is equipped with a plurality of preheating groove, preheating table is equipped with first air hole, second air hole and third air hole, first air hole includes the outlet of the upper groove wall of corresponding preheating groove and the import that communicates to hot blast machine, second air hole includes the outlet of the side groove wall of corresponding preheating groove and the import that communicates to hot blast machine, third air hole includes the import of the side groove wall of corresponding preheating groove and the outlet of the preheating table outside wall, hot pressure module, including hot pressure table and hot pressure drive part, the bottom surface of hot pressure drive part is equipped with heating block, removes the module, including clamping table and removes drive part, the utility model discloses the preheating module's setting realizes the preheating function of the plastic pin of workpiece, not only makes subsequent hot pressure module plastic pin hot pressure more stable and fast, and ensures the stability and the aesthetic degree of connection.

Description

Technical Field

[0001] This invention relates to the technical field of thermoplastic processing of automotive parts, and specifically to a hot pressing and welding equipment for interior parts. Background Technology

[0002] With the rapid development of the automotive industry in recent years, a large number of new technologies, new materials and new processes have been widely used in the processing of automotive parts, which has greatly improved the power, economy, safety, emissions and comfort of automobiles.

[0003] To achieve a stable connection between plastic interior trim parts, one part typically has several plastic pins, while the other has several mounting slots. The plastic pins are inserted into the slots, then bent and fused using a thermoforming device. After cooling, the two parts are thermo-fused. However, during the bending process, the plastic pins may tilt or deform in different directions, affecting not only the stability of the connection but also the aesthetics. Summary of the Invention

[0004] The purpose of this invention is to solve the problem in the prior art that plastic pins may undergo tilting deformation in different directions during the bending process of a hot pressing device, which affects the connection stability between two plastic parts.

[0005] To address the above problems, the present invention provides a hot-press welding device for interior trim parts, comprising a base frame, wherein the base frame is provided with:

[0006] A preheating module includes a preheating platform and a preheating drive component for lifting and lowering the preheating platform. The bottom surface of the preheating platform is provided with a plurality of preheating slots. The preheating platform is provided with a first air hole, a second air hole and a third air hole corresponding to each preheating slot. The first air hole includes an outlet that penetrates to the upper wall of the corresponding preheating slot and an inlet that connects to a hot air blower. The second air hole includes an outlet that penetrates to the side wall of the corresponding preheating slot and an inlet that connects to a hot air blower. The third air hole includes an inlet that penetrates to the side wall of the corresponding preheating slot and an outlet that penetrates to the outer wall of the preheating platform. The outlet of the second air hole and the inlet of the third air hole are spaced apart and located on the same side wall of the preheating slot.

[0007] A hot press module includes a hot press table and a hot press drive component for driving the hot press table to rise and fall, wherein the bottom surface of the hot press drive component is provided with a heating block;

[0008] The transfer module includes a clamp for fixing the workpiece and a transfer drive for moving the clamp sequentially to below the preheating table and below the hot pressing table.

[0009] In the above scheme, the clamping platform is first moved to the preheating platform by the transfer drive component. The preheating drive component drives the preheating platform to descend, allowing the plastic pins of the workpiece to enter the preheating tank. Then, the first and second air holes simultaneously blow hot air into the preheating tank to preheat the plastic pins. The hot air in the preheating tank will be discharged from the third air hole. Since the second and third air holes are located on the same side wall of the preheating tank, the side of the plastic pin opposite to this side wall will be subjected to stronger preheating by the hot air, i.e., one side of the plastic pin has a higher temperature and the other side has a lower temperature. After preheating is completed, the transfer drive component moves the clamping platform to the hot pressing platform. The hot pressing drive component drives the hot pressing platform to descend. Since the side of the plastic pin with a higher temperature is more easily deformed, the heating block can push the plastic pin of the workpiece to bend towards the side with a higher temperature, ensuring that the direction of bending of the plastic pin is consistent each time. At the same time, the heating block heat-melts the bent plastic pin, thus completing the hot pressing welding. Compared with existing technologies, the above solution achieves the preheating function of the plastic pins of the workpiece through the setting of the preheating module. This not only makes the hot pressing of the plastic pins of the subsequent hot pressing module more stable and faster, but also ensures that the plastic pins on the workpiece are bent in the same direction, thus ensuring the stability and aesthetics of the connection.

[0010] Preferably, the sidewall of the preheating tank is provided with an elongated flow channel that is opened laterally. The opening of the elongated flow channel is set facing the side of the plastic pin of the workpiece. The outlet of the second air hole extends through the upper wall of the first end of the elongated flow channel, and the inlet of the third air hole extends through the upper wall of the tail end of the elongated flow channel. Thus, the hot air blown out by the second air hole will pass through the elongated flow channel and then flow out from the third air hole. During the flow process, the hot air in the elongated flow channel can make better contact and heat the lower part of the side of the plastic pin, avoiding excessive deformation of the lower part of the side of the plastic pin by the hot air.

[0011] Preferably, the two opposite side walls of the preheating tank are provided with clamps, and the two clamps are located above the elongated flow channel. The two clamps are respectively used to abut against the upper sides of the plastic pin of the workpiece, thereby clamping the upper part of the plastic pin and avoiding the problem of the upper part of the plastic pin being accidentally deformed due to the hot air from the first air hole.

[0012] Preferably, the clip is made of spring steel with an arc-shaped cross-section, which provides good elasticity and heat resistance, thus achieving better clamping of the upper part of the plastic pin.

[0013] Preferably, the opening of the elongated flow channel is chamfered or rounded, so that the hot air in the preheating tank can enter the elongated flow channel more smoothly and be discharged from the third air hole.

[0014] Preferably, the upper wall of the preheating tank is provided with an elongated guide channel that is opened laterally. The long side of the elongated guide channel is parallel to the long side of the plastic pin of the workpiece. The outlet of the first air hole extends to the middle of the elongated guide channel, so that the hot air blown out from the outlet of the first air hole can be guided by the elongated guide channel and distributed more evenly, so as to achieve a more uniform and stable contact between the hot air and the plastic pin and achieve a better preheating effect.

[0015] As a preferred embodiment, the above solution also includes a circulation pipe, one end of which is connected to the outlet of the third air hole and the other end of which is connected to the air inlet of the hot air blower, so that the airflow in the third air hole can enter the hot air blower through the circulation pipe, realize recycling, and effectively save energy.

[0016] Preferably, both the preheating drive and the hot pressing drive are pneumatic cylinders, hydraulic cylinders, or electric cylinders. The cylinder body of the preheating drive is connected to the base frame and its output end is downward, and the preheating platform is connected to the output end of the preheating drive. The cylinder body of the hot pressing drive is connected to the base frame and its output end is downward, and the hot pressing platform is connected to the output end of the hot pressing drive, thereby realizing the stable lifting function of the preheating platform and the hot pressing platform.

[0017] Preferably, the transfer drive is a lead screw motor assembly arranged laterally, and the clamp is connected to the output end of the lead screw motor assembly, thereby realizing precise control of the clamp position by the transfer drive.

[0018] Preferably, the base frame is also equipped with a visual recognition camera, which is positioned facing downwards from the hot press table. After the hot press table completes the hot pressing process on the plastic pins of the workpiece on the clamping table, the visual recognition camera can visually inspect the workpiece on the clamping table to ensure that the hot pressing welding quality of the workpiece meets the requirements. Attached Figure Description

[0019] Figure 1 This is a front view schematic diagram of a hot pressing welding device for interior parts;

[0020] Figure 2 A schematic diagram of a transfer module for a hot-press welding equipment for interior parts;

[0021] Figure 3 For along Figure 2 Cross-sectional view of the XX section line;

[0022] Figure 4 A schematic diagram of a preheating table for a hot pressing welding device for interior parts;

[0023] Figure 5 A bottom view schematic diagram of the preheating table of a hot pressing welding equipment for interior parts;

[0024] Figure 6 For along Figure 5 Cross-sectional view of section AA in the middle;

[0025] Figure 7 For along Figure 6 sectional view of the BB section line;

[0026] Figure 8 For along Figure 6 A cross-sectional view of the CC section line;

[0027] Figure 9 For along Figure 8 Schematic diagram of the DD section line in the middle;

[0028] Figure 10 For along Figure 8 A cross-sectional view of the EE section line.

[0029] Explanation of reference numerals in the attached figures.

[0030] 1. Base frame; 2. Preheating table; 21. Preheating tank; 22. First air hole; 23. Second air hole; 24. Third air hole; 25. Long flow channel; 26. Long flow guide channel; 3. Preheating drive component; 4. Hot press table; 41. Heating block; 5. Hot press drive component; 6. Clamping platform; 7. Transfer drive component; 8. Clamping plate; 9. Workpiece; 91. Plastic pin. Detailed Implementation

[0031] To make the above-mentioned objectives, features, and advantages of the present invention more apparent and understandable, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. It should also be noted that all directional indications (such as up, down, left, right, front, back, inside, outside) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of the components in a specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0032] Please see Figures 1-10 An embodiment of the present invention provides a hot pressing welding device for interior parts, including a base frame 1, on which:

[0033] The preheating module includes a preheating platform 2 and a preheating drive 3 for driving the preheating platform 2 to rise and fall. The bottom surface of the preheating platform 2 is provided with a plurality of preheating grooves 21. The preheating platform 2 is provided with a first air hole 22, a second air hole 23 and a third air hole 24 corresponding to each preheating groove 21. The first air hole 22 includes an outlet that penetrates to the upper groove wall of the corresponding preheating groove 21 and an inlet that connects to a hot air blower (not shown in the figure). The second air hole 23 includes an outlet that penetrates to the side groove wall of the corresponding preheating groove 21 and an inlet that connects to a hot air blower. The third air hole 24 includes an inlet that penetrates to the side groove wall of the corresponding preheating groove 21 and an outlet that penetrates to the outer side wall of the preheating platform 2. The outlet of the second air hole 23 and the inlet of the third air hole 24 are spaced apart on the same side groove wall of the preheating groove 21.

[0034] The hot press module includes a hot press table 4 and a hot press drive 5 for driving the hot press table 4 to rise and fall. The bottom surface of the hot press drive 5 is provided with a heating block 41.

[0035] The transfer module includes a clamping platform 6 for fixing the workpiece 9 and a transfer drive 7 for moving the clamping platform 6 sequentially to below the preheating platform 2 and below the hot pressing platform 4.

[0036] It should be noted that the workpiece 9 in the above scheme includes two plastic parts, one of which has its plastic pin 91 pre-installed in the mounting slot of the other plastic part; the length and width of the preheating tank 21 are slightly larger than the plastic pin 91. The clamping platform 6 is first moved below the preheating platform 2 by the transfer drive 7, and the preheating drive 3 drives the preheating platform 2 to descend so that the plastic pin 91 of the workpiece 9 can enter the preheating tank 21. Then, the first air hole 22 and the second air hole 23 simultaneously blow hot air into the preheating tank 21 to achieve the preheating function of the plastic pin 91; the hot air in the preheating tank 21 will be discharged from the third air hole 24, because the second air hole 23 and... The third air vent 24 is located on the same side wall of the preheating tank 21. Therefore, the side of the plastic pin 91 opposite to this side wall will be subjected to stronger hot air preheating, that is, one side of the plastic pin 91 has a higher temperature and the other side has a lower temperature. After preheating is completed, the transfer drive 7 moves the clamping table 6 to the bottom of the hot press table 4. The hot press drive 5 drives the hot press table 4 to descend. Since the side of the plastic pin 91 with a higher temperature is more easily deformed, the heating block 41 can push the plastic pin 91 to bend to the side with a higher temperature, ensuring that the direction of bending of the plastic pin 91 is consistent each time. At the same time, the heating block 41 heat-melts the bent plastic pin 91, thus completing the hot press welding.

[0037] The above solution achieves the preheating function of the plastic pins 91 of the workpiece 9 through the setting of the preheating module. This not only makes the subsequent hot pressing of the plastic pins 91 by the hot pressing module more stable and faster, but also ensures that the plastic pins 91 of the workpiece 9 are bent in the same direction, thus ensuring the stability and aesthetics of the connection.

[0038] In this embodiment, the side wall of the preheating tank 21 is provided with an elongated flow channel 25 that is opened laterally. The elongated flow channel 25 is located at the lower part of the side wall of the preheating tank 21, so that the opening of the elongated flow channel 25 faces the lower part of the side of the plastic pin 91 of the workpiece 9. The outlet of the second air hole 23 extends to the upper wall of the first end of the elongated flow channel 25, and the inlet of the third air hole 24 extends to the upper wall of the tail end of the elongated flow channel 25. Thus, the hot air blown out by the second air hole 23 will pass through the elongated flow channel 25 and then flow out from the third air hole 24. During the flow process, the hot air in the elongated flow channel 25 can make better contact and heat the lower part of the side of the plastic pin 91, avoiding excessive deformation of the lower part of the side of the plastic pin 91 by the hot air.

[0039] The opening of the elongated flow channel 25 is chamfered or rounded, so that the hot air in the preheating tank 21 can enter the elongated flow channel 25 more smoothly and be discharged from the third air hole 24.

[0040] As an improvement to the above embodiment, the two opposite side walls of the preheating tank 21 are provided with clamping pieces 8. The two clamping pieces 8 are located above the elongated flow channel 25, and the two clamping pieces 8 are respectively used to abut against the upper sides of the plastic pin 91 of the workpiece 9, thereby clamping the upper part of the plastic pin 91 and avoiding the problem that the upper part of the plastic pin 91 is accidentally deformed due to the hot air from the first air hole 22.

[0041] Furthermore, the clip 8 is made of spring steel with an arc-shaped cross-section, thus possessing better elasticity and heat resistance, achieving a better clamping effect on the upper part of the plastic pin 91.

[0042] In this embodiment, the upper wall of the preheating tank 21 is provided with an elongated guide channel 26 that is opened laterally. The long side of the elongated guide channel 26 is parallel to the long side of the plastic pin 91 of the workpiece 9. The outlet of the first air hole 22 extends to the middle of the elongated guide channel 26, so that the hot air blown out from the outlet of the first air hole 22 can be guided by the elongated guide channel 26 and distributed more evenly, so as to achieve a more uniform and stable contact between the hot air and the plastic pin 91 and achieve a better preheating effect.

[0043] The hot air blower is located outside the base frame 1. The inlets of the first air hole 22 and the second air hole 23 are both connected to the air outlet of the hot air blower through air guide pipes. For energy saving considerations, the above scheme also includes a circulation pipe. One end of the circulation pipe is connected to the outlet of the third air hole 24 and the other end is connected to the air inlet of the hot air blower, so that the airflow in the third air hole 24 can enter the hot air blower through the circulation pipe, realize the circulation, and effectively reduce energy consumption.

[0044] In this embodiment, both the preheating drive 3 and the hot pressing drive 5 are pneumatic cylinders, hydraulic cylinders, or electric cylinders. The cylinder body of the preheating drive 3 is connected to the base frame 1 and its output end is downward, and the preheating platform 2 is connected to the output end of the preheating drive 3; the cylinder body of the hot pressing drive 5 is connected to the base frame 1 and its output end is downward, and the hot pressing platform 4 is connected to the output end of the hot pressing drive 5, thereby realizing the stable lifting function of the preheating platform 2 and the hot pressing platform 4.

[0045] In this embodiment, the transfer drive 7 is a lead screw motor assembly arranged laterally, with the lead screw of the lead screw motor assembly passing sequentially below the preheating table 2 and below the hot pressing table 4; the clamping table 6 is provided with a screw base that is connected to the lead screw of the lead screw motor assembly, thereby realizing precise control of the position of the clamping table 6 by the transfer drive 7. Of course, the transfer drive 7 can also be a cylinder arranged laterally, with the clamping table 6 connected to the output end of the cylinder, which can also realize the function of the clamping table 6 moving sequentially below the preheating table 2 and below the hot pressing table 4.

[0046] As an extension of the above embodiments, a visual recognition camera is also provided on the base frame 1. The visual recognition camera is positioned facing downwards from the hot press table 4, so that after the hot press table 4 completes the hot pressing process on the plastic pins 91 of the workpiece 9 on the clamping table 6, the visual recognition camera can perform visual inspection on the workpiece 9 on the clamping table 6 to ensure that the hot pressing welding quality of the workpiece 9 meets the requirements.

[0047] While the disclosure is as stated above, its scope of protection is not limited thereto. Those skilled in the art will be able to make various changes and modifications without departing from the spirit and scope of this disclosure, and all such changes and modifications will fall within the scope of protection of the invention.

Claims

1. A hot pressing welding device for interior trim parts, comprising a base frame (1), characterized in that, The base frame (1) is provided with: The preheating module includes a preheating platform (2) and a preheating drive (3) for driving the preheating platform (2) to rise and fall. The bottom surface of the preheating platform (2) is provided with a plurality of preheating grooves (21). The preheating platform (2) is provided with a first air hole (22), a second air hole (23) and a third air hole (24) corresponding to each preheating groove (21). The first air hole (22) includes an outlet that penetrates to the upper groove wall of the corresponding preheating groove (21) and an inlet that connects to the hot air blower. The second air hole (23) includes an outlet that penetrates to the side groove wall of the corresponding preheating groove (21) and an inlet that connects to the hot air blower. The third air hole (24) includes an inlet that penetrates to the side groove wall of the corresponding preheating groove (21) and an outlet that penetrates to the outer side wall of the preheating platform (2). The outlet of the second air hole (23) and the inlet of the third air hole (24) are spaced apart on the same side groove wall of the preheating groove (21). The hot pressing module includes a hot pressing table (4) and a hot pressing drive (5) for driving the hot pressing table (4) to rise and fall. The bottom surface of the hot pressing drive (5) is provided with a heating block (41). The transfer module includes a clamp (6) for fixing the workpiece (9) and a transfer drive (7) for moving the clamp (6) sequentially to the bottom of the preheating table (2) and the bottom of the hot pressing table (4); The preheating tank (21) has a transversely opening elongated flow channel (25) on its side wall. The elongated flow channel (25) is located at the lower part of the side wall of the preheating tank (21). The opening of the elongated flow channel (25) is set at the lower part of the side facing the plastic pin (91) of the workpiece (9). The outlet of the second air hole (23) extends to the upper wall of the first end of the elongated flow channel (25), and the inlet of the third air hole (24) extends to the upper wall of the tail end of the elongated flow channel (25).

2. The interior trim hot-press welding equipment according to claim 1, characterized in that, The two opposite side walls of the preheating tank (21) are provided with clamps (8), and the two clamps (8) are located above the elongated flow channel (25). The two clamps (8) are respectively used to abut against the upper sides of the plastic pin (91) of the workpiece (9).

3. The interior trim hot-press welding equipment according to claim 2, characterized in that, The clip (8) is made of spring steel and has an arc-shaped cross-section.

4. The interior trim hot-press welding equipment according to claim 1, characterized in that, The opening of the elongated flow channel (25) is chamfered or rounded.

5. The interior trim hot-press welding equipment according to claim 1, characterized in that, The upper wall of the preheating tank (21) is provided with an elongated guide channel (26) that is opened in the horizontal direction. The long side of the elongated guide channel (26) is parallel to the long side of the plastic pin (91) of the workpiece (9). The outlet of the first air hole (22) extends to the middle of the elongated guide channel (26).

6. The interior trim hot-press welding equipment according to claim 1, characterized in that, It also includes a circulation pipe, one end of which is connected to the outlet of the third air hole (24) and the other end of which is connected to the air inlet of the hot air blower.

7. The interior trim hot-press welding equipment according to claim 1, characterized in that, Both the preheating drive (3) and the hot pressing drive (5) are cylinders, oil cylinders or electric cylinders. The cylinder body of the preheating drive (3) is connected to the base frame (1) and the output end is set downward. The preheating platform (2) is connected to the output end of the preheating drive (3). The cylinder body of the hot pressing drive (5) is connected to the base frame (1) and the output end is set downward. The hot pressing platform (4) is connected to the output end of the hot pressing drive (5).

8. The interior trim hot-press welding equipment according to claim 1, characterized in that, The transfer drive component (7) is a lead screw motor pair arranged in the transverse direction, and the clamp (6) is connected to the output end of the lead screw motor pair.

9. The interior trim hot-press welding equipment according to claim 1, characterized in that, The base frame (1) is also equipped with a visual recognition camera, which is positioned facing downwards from the hot press table (4).

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