Automobile door interior panel leather coating device and process thereof

Abstract

The application discloses a kind of automobile door interior board leather covering device and process thereof, including base, conveying mechanism, plate feeding mechanism, blow pressure covering mechanism and cutting mechanism;Plate feeding mechanism includes plate feeding clamp table and clamp table lifting mechanism, and plate feeding clamp table is provided with profiling placement groove;Blow pressure covering mechanism includes blow pressure box body, and the top surface of blow pressure box body is provided with air passage mesh, and blow pressure box body top is equipped with baffle, and drive mechanism is equipped on blow pressure box body, and control baffle transverse motion;Cutting mechanism includes ring cutter, and the bottom surface of plate feeding clamp table is provided with cutter groove matched with ring cutter, and cutting lifting mechanism is provided on base, and control blow pressure box body lifting;First vacuum preliminary covering, then fully tight contact covering is pressed up to leather material belt by hot air flow, and hot air flow is gradually opened, and leather material belt and interior board residual gas are discharged to the other end, and overall covering quality is high;Leather covering and cutting can be completed by one equipment and one process, with high precision and high efficiency.

Description

Technical Field

[0001] This invention belongs to the field of automotive processing and manufacturing technology, specifically relating to a leather wrapping device and process for automotive door interior panels. Background Technology

[0002] As people's living standards gradually improve, cars are becoming more and more common, and the quality requirements for cars are also getting higher and higher, including the requirements for car interiors. During the manufacturing process, the interior door panels of cars need to be covered with leather to improve the quality and comfort of the entire car interior environment.

[0003] The wrapping of automotive door interior panels includes manual wrapping and mechanical wrapping. Manual wrapping is low in precision and efficiency and cannot meet the requirements of modern processing. During mechanical wrapping, due to the large area of ​​leather to be wrapped and the soft material being difficult to clamp, adhesive must be applied between the leather and the interior panel. It is difficult to carry out the process in a completely vacuum state, and residual gas is prone to cause air bubbles to bulge after wrapping, affecting the overall wrapping quality. In addition, wrapping also requires cutting the leather to be wrapped on the interior panel, which requires two machines and two processes to complete, resulting in low efficiency. At the same time, current equipment cannot perform automatic and efficient wrapping of interior panels. Summary of the Invention

[0004] This invention provides a leather wrapping device and process for automotive door interior panels. First, a vacuum initial wrapping is performed, followed by a hot air stream pressing the leather strip upwards for full and tight contact wrapping. As the hot air stream gradually opens, residual gas from the leather strip and interior panel is discharged to the other end, resulting in high overall wrapping quality. The wrapping and cutting can be completed in one machine and one process, with high precision and efficiency, thus solving the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a leather covering device for automotive door interior panels, comprising a base, wherein a conveying mechanism, a plate feeding mechanism, a blow-press covering mechanism, and a cutting mechanism are mounted on the base; the conveying mechanism comprises two sets of front and rear conveying rollers, and a drive to rotate the conveying rollers; the plate feeding mechanism comprises a plate feeding platform and a platform lifting mechanism for controlling the lifting and lowering of the plate feeding platform, wherein a contour placement groove is provided in the middle of the bottom of the plate feeding platform, the plate feeding platform has a cavity inside and is connected to the contour placement groove, and the plate feeding platform is provided with a connecting pipe;

[0006] The blowing and covering mechanism includes a blowing box located below the plate feeding clamp. The blowing box has a cavity inside and a ventilation mesh corresponding to the contour placement groove on its top surface. The blowing box is connected to an air inlet pipe. A flat baffle plate is installed on the top of the blowing box. The baffle plate is in close contact with the top surface inside the blowing box. A drive mechanism for controlling the lateral movement of the baffle plate is installed on the blowing box.

[0007] The cutting mechanism includes a ring cutter, which is fixedly mounted on the top surface of the blow-press box and has a contour-following structure. The bottom surface of the feeding plate clamp is provided with a cutter groove that cooperates with the ring cutter. The base is provided with a cutting lifting mechanism that controls the lifting and lowering of the blow-press box.

[0008] Preferably, the clamping platform lifting mechanism includes a plate feeding frame, on which a first servo cylinder is fixed. The piston rod of the first servo cylinder passes through the plate feeding frame and is fixedly connected to the plate feeding clamp. A first guide rod is provided at the top of the plate feeding clamp, and a linear bearing that is slidably connected to the first guide rod is provided on the plate feeding frame.

[0009] Preferably, the cutting lifting mechanism includes a second servo cylinder fixed to the bottom surface of the base. The piston rod of the second servo cylinder passes through the base and is fixedly connected to the blow-press box. The bottom surface of the blow-press box is provided with a second guide rod, and the base is provided with a linear bearing that is slidably connected to the second guide rod.

[0010] Preferably, the driving mechanism includes a servo geared motor fixed to one side of the blow-press box, the output shaft of the servo geared motor is fixed with a gear, and the bottom surface of the baffle plate is provided with a ruler groove, which meshes with the gear.

[0011] Preferably, the baffle plate has a hollow cavity structure, with an air inlet on one end of the bottom surface of the baffle plate located inside the blowing box, and an air outlet on the outer end of the bottom surface.

[0012] Preferably, the bottom surface of the plate feeding clamp is provided with a spacer groove around the contour placement groove, and a small hole connecting the inner cavity of the plate feeding clamp is provided around the spacer groove.

[0013] Preferably, the blow-press box is provided with multiple layers of diversion mesh plates laid flat inside, with gaps between each layer of diversion mesh plates, and the air inlet pipe is lower than the lowest diversion mesh plate.

[0014] Preferably, the plate feeding clamp and the blowing box are respectively equipped with a laser displacement sensor transmitter and receiver, a third guide rod is fixed to the rear side of the plate feeding clamp, and the rear side of the blowing box is slidably connected to the third guide rod through a linear bearing.

[0015] Preferably, the front and rear sides of the top of the blow-press box are provided with guide rails, and the baffle plate is provided with guide rail grooves that are slidably connected to the guide rails.

[0016] This invention provides a wrapping process based on the above-mentioned automotive door interior panel leather wrapping device, comprising the following steps:

[0017] S1. The leather strip is conveyed by the conveyor rollers, and the leather strip is not taut between the front and rear conveyor rollers during the conveying process;

[0018] S2. Connect the external negative pressure device through the connecting pipe, place the interior panel under the contour placement slot, and make the covered side of the interior panel face down. Start the negative pressure device to adsorb the interior panel. The clamping platform lifting mechanism drives the plate feeding clamping platform to descend and approach the leather strip. During this process, apply adhesive evenly to the leather strip at the corresponding bonding area below the interior panel through the external glue application device.

[0019] S3. When the negative pressure equipment is working, negative pressure is created in the groove around the interior panel through the small holes. The leather strip under the interior panel is lifted upward by the external atmospheric pressure to contact the interior panel and perform initial wrapping.

[0020] S4. Hot air is introduced by connecting to an external air supply device through the air inlet pipe. The hot air will be distributed layer by layer by multiple diversion mesh plates and then blown upward evenly.

[0021] S5. The drive mechanism drives the baffle plate to slide outward horizontally, and the ventilation mesh is gradually opened from one end. The opening of the ventilation mesh will generate an upward hot airflow. The hot airflow presses the leather strip upward so that it is fully pressed and covered with the interior panel. As the hot airflow gradually opens, it discharges the residual gas at the point where the leather strip and the interior panel only come into contact through vacuum adsorption to the other end, until the baffle plate fully opens the ventilation mesh, thereby fully squeezing and discharging the residual gas from one end to the other end. At the same time, the hot airflow heats and bonds the adhesive.

[0022] S6. The clamping platform lifting mechanism drives the feeding clamping platform to press down, so that the leather strip descends but does not contact the ring cutting knife. The leather strip forms an upward pulling force. The air inlet pipe connects to the external air supply equipment to stop the supply of hot air. With the help of vacuum adsorption, cooling and coating are carried out.

[0023] S7. The cutting lifting mechanism drives the blowing box to rise, and further drives the ring cutting blade to rise, which, together with the blade groove, cuts the leather strip. The cutting lifting mechanism then drives the blowing box to fall and reset.

[0024] S8. The clamping platform lifting mechanism drives the plate feeding clamping platform to rise and reset, stopping vacuum adsorption, and the external mechanism removes the wrapped interior panel.

[0025] S9. The conveyor rollers drive the leather to move one working position, and the same principle is used to cycle through the process to achieve efficient leather wrapping of the interior panels.

[0026] Compared with the prior art, the beneficial effects of the present invention are:

[0027] 1. First, vacuum initial coating is performed, and then hot air is used to press the leather strip upwards to fully compress and coat it. As the hot air gradually opens, the residual gas between the leather strip and the interior panel is discharged to the other end, resulting in high overall coating quality.

[0028] 2. One machine can complete the coating and cutting process in one step, with high precision and high efficiency.

[0029] 3. It can automatically wrap and cut leather on interior panels, and can be processed efficiently and repeatedly.

[0030] 4. A highly efficient process for automatic leather wrapping and cutting of interior panels is provided, which is suitable for widespread application. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the front cross-sectional structure of the present invention;

[0032] Figure 2 for Figure 1 A magnified structural diagram at point A;

[0033] Figure 3 for Figure 1 A magnified structural diagram at point B;

[0034] Figure 4 This is a top view schematic diagram of the blow-press box, ventilation mesh, and ring cutting blade of the present invention;

[0035] Figure 5 This is a bottom view of the barrier structure of the present invention;

[0036] Figure 6 This is a cross-sectional view of the interior trim panel after it has been clamped according to the present invention;

[0037] Figure 7 This is a schematic diagram of the transmitter, receiver, and third guide rod structure of the present invention;

[0038] Figure 8 This is a schematic diagram of the blocking plate and guide rail groove structure of the present invention.

[0039] In the diagram: 1. Base; 2. Conveying roller; 3. Plate feeding platform; 4. Contouring placement groove; 5. Connecting pipe; 6. Pressing box; 7. Ventilation mesh; 8. Air inlet pipe; 9. Baffle plate; 10. Ring cutter; 11. Knife groove; 12. Plate feeding frame; 13. First servo cylinder; 14. First guide rod; 15. Second servo cylinder; 16. Second guide rod; 17. Servo geared motor; 18. Gear; 19. Ruler groove; 20. Air inlet; 21. Air outlet; 22. Spacing groove; 23. Small hole; 24. Diverting mesh plate; 25. Transmitter; 26. Receiver; 27. Third guide rod; 28. Guide rail groove. Detailed Implementation

[0040] 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.

[0041] Please see Figure 1-4 The present invention provides a leather covering device for automotive door interior panels, including a base 1, on which a conveying mechanism, a feeding mechanism, a blowing and covering mechanism and a cutting mechanism are mounted;

[0042] The conveying mechanism includes two sets of front and rear conveying rollers 2, and a drive to rotate the conveying rollers 2. The leather strip is conveyed through the conveying rollers 2. The leather strip is not taut between the front and rear conveying rollers 2 during conveying, so that the leather strip has room to move up or down.

[0043] The feeding mechanism includes a feeding clamp 3 and a clamp lifting mechanism for controlling the lifting and lowering of the feeding clamp 3. The feeding clamp 3 has a contour placement groove 4 in the middle of its bottom. The feeding clamp 3 has a cavity inside and is connected to the contour placement groove 4. The feeding clamp 3 is provided with a connecting pipe 5, which is connected to an external negative pressure device. The interior panel is placed below the contour placement groove 4 with the covered side of the interior panel facing down. The negative pressure device is activated to adsorb the interior panel. The clamp lifting mechanism drives the feeding clamp 3 to descend and approach the leather strip. The contour placement groove 4 is made according to the shape of the product.

[0044] The blowing and covering mechanism includes a blowing box 6 located below the feeding plate clamp 3. The blowing box 6 has a cavity inside and a ventilation mesh 7 on its top surface corresponding to the contour placement groove 4. The blowing box 6 is connected to an air inlet pipe 8. A flat baffle plate 9 is mounted on the top of the blowing box 6. The baffle plate 9 is in close contact with the inner top surface of the blowing box 6. The blowing box 6 is equipped with a drive mechanism that controls the lateral movement of the baffle plate 9. The drive mechanism drives the baffle plate 9 to gradually slide outward horizontally, and the ventilation mesh 7 is gradually opened from one end. The opening of the ventilation mesh 7 generates an upward hot airflow. The hot airflow presses the leather strip upward so that it fully presses and covers the interior panel. During the gradual opening process, the hot airflow discharges the residual gas at the point where the leather strip and the interior panel only come into contact through vacuum adsorption to the other end, until the baffle plate 9 fully opens the ventilation mesh 7, thereby fully squeezing and discharging the residual gas from one end to the other end. At the same time, the hot airflow heats and bonds the adhesive.

[0045] The cutting mechanism includes a ring cutter 10, which is fixedly mounted on the top surface of the blow-press box 6 and has a contour-following structure. The ring cutter 10 corresponds to the contour placement groove 4 and is made according to the product shape. The bottom surface of the feeding plate clamp 3 is provided with a knife groove 11 that cooperates with the ring cutter 10. The base 1 is provided with a cutting lifting mechanism that controls the lifting and lowering of the blow-press box 6. Thus, during the cooling and coating molding process, the cutting lifting mechanism drives the blow-press box 6 to rise, and further drives the ring cutter 10 to rise, which cooperates with the knife groove 11 to cut the leather strip. The cutting lifting mechanism drives the blow-press box 6 to fall and reset. The coating and cutting are completed in one process with one machine.

[0046] like Figure 1 As shown, the clamping platform lifting mechanism includes a plate feeding frame 12, on which a first servo cylinder 13 is fixed. The piston rod of the first servo cylinder 13 passes through the plate feeding frame 12 and is fixedly connected to the plate feeding clamping platform 3. A first guide rod 14 is provided at the top of the plate feeding clamping platform 3, and a linear bearing that is slidably connected to the first guide rod 14 is provided on the plate feeding frame 12. In this embodiment, the lifting and lowering of the plate feeding clamping platform 3 is achieved by the piston rod being extended and retracted by the first servo cylinder 13, and the guiding and positioning during the lifting and lowering process is achieved by the first guide rod 14 in conjunction with the linear bearing.

[0047] like Figure 1 As shown, the cutting lifting mechanism includes a second servo cylinder 15 fixed to the bottom surface of the base 1. The piston rod of the second servo cylinder 15 passes through the base 1 and is fixedly connected to the blow-press box 6. The bottom surface of the blow-press box 6 is provided with a second guide rod 16. The base 1 is provided with a linear bearing that is slidably connected to the second guide rod 16. In this embodiment, the second servo cylinder 15 drives the piston rod to extend and retract, thereby realizing the lifting and lowering of the blow-press box 6. The second guide rod 16 cooperates with the linear bearing to guide and position the lifting and lowering process.

[0048] like Figure 3 As shown, the driving mechanism includes a servo geared motor 17 fixed to one side of the blow-press box 6. The output shaft of the servo geared motor 17 is fixed with a gear 18. The bottom surface of the baffle plate 9 is provided with a ruler groove 19, which meshes with the gear 18. In this embodiment, the servo geared motor 17 drives the gear 18 to rotate, which in turn cooperates with the ruler groove 19 to make the baffle plate 9 slide laterally, thereby adjusting the opening degree of the ventilation mesh 7.

[0049] like Figure 5As shown, the baffle plate 9 has a hollow cavity structure. One end of the baffle plate 9 located inside the blow-press box 6 has an air inlet 20, while the outer end has an air outlet 21. In this embodiment, when the ventilation mesh 7 is blocked, the air inlet 20, the inner cavity of the baffle plate, and the air outlet 21 provide an exhaust channel to maintain the pressure balance inside the blow-press box 6. This also helps to ensure that the air outlet of the ventilation mesh 7 is stable at different opening degrees.

[0050] like Figure 2 , Figure 6 As shown, the bottom surface of the plate feeding clamp 3 is provided with a spacer groove 22 around the contour placement groove 4, and a small hole 23 connecting the inner cavity of the plate feeding clamp 3 is provided around the spacer groove 22. In this embodiment, when the negative pressure device is working, a negative pressure is formed at the spacer groove 22 around the interior panel through the small hole 23. The leather strip under the interior panel is lifted upward by the external atmospheric pressure to contact the interior panel and perform preliminary covering.

[0051] like Figure 3 As shown, the blow-press box 6 has multiple layers of diversion mesh plates 24 laid flat inside, with gaps between each layer of diversion mesh plates 24, and the air inlet pipe 8 is lower than the lowest diversion mesh plate 24; in this embodiment, hot air is introduced by connecting an external air supply device through the air inlet pipe 8, and the hot air will be diverted layer by layer by multiple diversion mesh plates 24 and then blown upward evenly.

[0052] like Figure 7 As shown, the plate feeding clamp 3 and the blowing box 6 are respectively equipped with a laser displacement sensor transmitter 25 and a receiver 26. A third guide rod 27 is fixed to the rear side of the plate feeding clamp 3, and the rear side of the blowing box 6 is slidably connected to the third guide rod 27 through a linear bearing. In this embodiment, the transmitter 25 and the receiver 26 send signals to the control center to facilitate precise control of the distance between the plate feeding clamp 3 and the blowing box 6, and further precisely control the cutting distance between the ring cutter 10 and the cutter groove 11 to avoid damage to the cutter and the product. The third guide rod 27 enables precise relative movement between the plate feeding clamp 3 and the blowing box 6.

[0053] like Figure 1 , Figure 8 As shown, the front and rear sides of the top of the blow-press box 6 are provided with guide rails, and the baffle plate 9 is provided with guide rail grooves 28 that are slidably connected to the guide rails; in this embodiment, the baffle plate 9 is limited by the guide rails and guide rail grooves 28 to improve the accuracy and stability of its lateral movement.

[0054] This invention provides a wrapping process based on the above-mentioned automotive door interior panel leather wrapping device, comprising the following steps:

[0055] S1. The leather strip is conveyed by the conveyor rollers 2, and the leather strip is not taut between the front and rear conveyor rollers 2 during the conveying process;

[0056] S2. Connect the external negative pressure device through the connecting pipe 5, place the interior panel under the contour placement slot 4 with the covered side of the interior panel facing down, start the negative pressure device to adsorb the interior panel, and the clamping platform lifting mechanism drives the plate feeding clamping platform 3 to descend close to the leather strip. During this period, apply adhesive evenly to the leather strip at the corresponding bonding area below the interior panel through the external adhesive application device.

[0057] S3. When the negative pressure equipment is working, negative pressure is formed at the interval groove 22 around the interior panel through the small hole 23. The leather strip under the interior panel is lifted upward by the external atmospheric pressure to contact the interior panel and perform preliminary covering.

[0058] S4. Hot air is introduced through the air inlet pipe 8 by connecting to an external air supply device. The hot air will be distributed layer by layer by multiple diversion mesh plates 24 and then blown upward evenly.

[0059] S5. The drive mechanism drives the baffle plate 9 to slide outward horizontally, and the ventilation mesh 7 is gradually opened from one end. The opening of the ventilation mesh 7 will generate an upward hot airflow. The hot airflow presses the leather strip upward to make it fully press and cover the interior panel. As the hot airflow gradually opens, it discharges the residual gas at the point where the leather strip and the interior panel only come into contact with each other by vacuum adsorption until the baffle plate 9 fully opens the ventilation mesh 7, thereby fully squeezing and discharging the residual gas from one end to the other end. At the same time, the hot airflow heats and bonds the adhesive.

[0060] S6. The clamping platform lifting mechanism drives the feeding clamping platform 3 to press down, so that the leather strip descends but does not contact the ring cutting knife 10. The leather strip forms an upward pulling force. The air inlet pipe 8 connects to the external air supply equipment to stop the supply of hot air. With the help of vacuum adsorption, cooling and coating are carried out.

[0061] S7. The cutting lifting mechanism drives the blowing box 6 to rise, and further drives the ring cutting knife 10 to rise, which, together with the knife groove 11, cuts the leather strip. The cutting lifting mechanism drives the blowing box 6 to fall and reset.

[0062] S8. The clamping platform lifting mechanism drives the plate feeding clamping platform 3 to rise and reset, stopping vacuum adsorption, and the external mechanism removes the wrapped interior panel.

[0063] S9, the conveyor roller 2 drives the leather to move one working position, and the same principle is used to cycle and carry out efficient leather wrapping of the interior panel.

[0064] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A leather covering device for automotive door interior panels, comprising a base (1), characterized in that, The base (1) is equipped with a conveying mechanism, a plate feeding mechanism, a blow-pressing and covering mechanism and a cutting mechanism; The conveying mechanism includes two sets of front and rear conveying rollers (2), and a drive to rotate the conveying rollers (2); The plate feeding mechanism includes a plate feeding clamp (3) and a clamp lifting mechanism for controlling the lifting of the plate feeding clamp (3). The plate feeding clamp (3) has a contour placement groove (4) in the middle of its bottom. The plate feeding clamp (3) has a cavity inside and is connected to the contour placement groove (4). The plate feeding clamp (3) is provided with a connecting pipe (5). The blowing and covering mechanism includes a blowing box (6) located below the plate feeding clamp (3). The blowing box (6) has a cavity inside and a ventilation mesh (7) corresponding to the contour placement groove (4) on its top surface. The blowing box (6) is connected to an air inlet pipe (8). A flat baffle plate (9) is installed on the top of the blowing box (6). The baffle plate (9) is in close contact with the top surface inside the blowing box (6). The blowing box (6) is equipped with a drive mechanism to control the lateral movement of the baffle plate (9). The cutting mechanism includes a ring cutter (10), which is fixed on the top surface of the blow-press box (6) and has a contour structure. The bottom surface of the feeding plate clamp (3) is provided with a cutter groove (11) that cooperates with the ring cutter (10). The base (1) is provided with a cutting lifting mechanism for controlling the lifting of the blow-press box (6).

2. The leather covering device for automotive door interior panels according to claim 1, characterized in that, The clamping platform lifting mechanism includes a plate feeding frame (12), on which a first servo cylinder (13) is fixed. The piston rod of the first servo cylinder (13) passes through the plate feeding frame (12) and is fixedly connected to the plate feeding clamp (3). The top of the plate feeding clamp (3) is provided with a first guide rod (14), and the plate feeding frame (12) is provided with a linear bearing that is slidably connected to the first guide rod (14).

3. The leather covering device for automotive door interior panels according to claim 1, characterized in that, The cutting lifting mechanism includes a second servo cylinder (15) fixed to the bottom surface of the base (1). The piston rod of the second servo cylinder (15) passes through the base (1) and is fixedly connected to the blow-press box (6). The bottom surface of the blow-press box (6) is provided with a second guide rod (16). The base (1) is provided with a linear bearing that is slidably connected to the second guide rod (16).

4. The leather covering device for automotive door interior panels according to claim 1, characterized in that, The driving mechanism includes a servo geared motor (17) fixed on one side of the blow-press box (6), and a gear (18) is fixed on the output shaft of the servo geared motor (17). The bottom surface of the baffle plate (9) is provided with a ruler groove (19), and the ruler groove (19) meshes with the gear (18).

5. The leather covering device for automotive door interior panels according to claim 1, characterized in that, The baffle plate (9) has a hollow cavity structure. The bottom surface of one end of the baffle plate (9) located inside the blow-press box (6) is provided with an air inlet (20), while the bottom surface of the outer end is provided with an air outlet (21).

6. The leather covering device for automotive door interior panels according to claim 1, characterized in that, The bottom surface of the plate feeding clamp (3) is provided with an interval groove (22) around the contour placement groove (4), and a small hole (23) connecting the inner cavity of the plate feeding clamp (3) is provided around the interval groove (22).

7. The leather covering device for automotive door interior panels according to claim 1, characterized in that, The blow-press box (6) is provided with multiple layers of diversion mesh plates (24) laid flat inside, with gaps between each layer of diversion mesh plates (24), and the air inlet pipe (8) is lower than the bottommost diversion mesh plate (24).

8. The leather covering device for automotive door interior panels according to claim 1, characterized in that, The plate feeding clamp (3) and the blowing box (6) are respectively equipped with a laser displacement sensor transmitter (25) and a receiver (26). A third guide rod (27) is fixed on the rear side of the plate feeding clamp (3). The rear side of the blowing box (6) is slidably connected to the third guide rod (27) through a linear bearing.

9. A leather covering device for automotive door interior panels according to claim 1, characterized in that, The blow-press box (6) has guide rails on its front and rear sides, and the baffle plate (9) has guide rail grooves (28) that are slidably connected to the guide rails.

10. A covering process based on the leather covering device for automotive door interior panels according to any one of claims 1-9, characterized in that, Includes the following steps: S1. The leather strip is conveyed by the conveyor rollers, and the leather strip is not taut between the front and rear conveyor rollers during the conveying process; S2. Connect the external negative pressure device through the connecting pipe, place the interior panel under the contour placement slot, and make the covered side of the interior panel face down. Start the negative pressure device to adsorb the interior panel. The clamping platform lifting mechanism drives the plate feeding clamping platform to descend and approach the leather material strip. During this process, apply adhesive evenly to the leather material strip at the corresponding bonding area below the interior panel through the external adhesive application device. S3. When the negative pressure equipment is working, negative pressure is created in the groove around the interior panel through the small holes. The leather strip under the interior panel is lifted upward by the external atmospheric pressure to contact the interior panel and perform initial wrapping. S4. Hot air is introduced by connecting to an external air supply device through the air inlet pipe. The hot air will be distributed layer by layer by multiple diversion mesh plates and then blown upward evenly. S5. The drive mechanism drives the baffle plate to slide outward horizontally, and the ventilation mesh is gradually opened from one end. The opening of the ventilation mesh will generate an upward hot airflow. The hot airflow presses the leather strip upward so that it is fully pressed and covered with the interior panel. As the hot airflow gradually opens, it discharges the residual gas at the point where the leather strip and the interior panel only come into contact through vacuum adsorption to the other end, until the baffle plate fully opens the ventilation mesh, thereby fully squeezing and discharging the residual gas from one end to the other end. At the same time, the hot airflow heats and bonds the adhesive. S6. The clamping platform lifting mechanism drives the feeding clamping platform to press down, causing the leather strip to descend but not to contact the ring cutting knife. The leather strip forms an upward pulling force. The air inlet pipe connects to the external air supply equipment to stop the supply of hot air. With the help of vacuum adsorption, cooling and coating are carried out. S7. The cutting lifting mechanism drives the blowing box to rise, and further drives the ring cutting blade to rise, which, together with the blade groove, cuts the leather strip. The cutting lifting mechanism then drives the blowing box to fall and reset. S8. The clamping platform lifting mechanism drives the plate feeding clamping platform to rise and reset, stopping vacuum adsorption, and the external mechanism removes the wrapped interior panel. S9. The conveyor rollers drive the leather to move one working position, and the same principle is used to cycle through the process to achieve efficient leather wrapping of the interior panels.

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