A hot pressing coating tool and coating method for automobile interior parts

Abstract

The present invention relates to the technical field of automobile assembly tooling, and specifically proposes a hot-pressing and coating tooling and coating method for automobile interior decoration parts; the tooling includes a tooling table, on which an infrared heating device for preheating is installed; on which a lower mold and an upper mold matched with the lower mold are installed; on the workbench, a leather pre-storage box for stacking and storing multiple pieces of leather is fixed, and between the leather pre-storage box and the lower mold, a transfer and conveying mechanism for conveying the leather from the leather pre-storage box to the top of the lower mold one by one is installed. The tooling provided by the present invention can replace manual work to complete a series of operations of automatic material collection, automatic spreading and positioning, and automatic clamping and placement of leather during the hot-pressing and coating processing of specific automobile interior decoration parts, and then can cooperate to complete the hot-pressing and coating processing to realize continuous and automated, improve the processing efficiency, and ensure the consistency and accuracy of the leather placement position, thereby improving the consistency of the hot-pressing and coating molding quality of the interior decoration parts.

Description

Technical Field

[0001] The invention relates to the technical field of automobile assembly tooling, and specifically proposes a hot pressing coating tooling and a coating method for automobile interior decoration parts. Background Art

[0002] Car interior design is an important part of car design. In order to improve the aesthetics and comfort of car interior, car interior parts are often wrapped in leather. At the same time, soft wrapping can also play the role of sound insulation and shock absorption, safety protection, wear resistance and anti-slip, and easy cleaning.

[0003] For automotive interior parts with good overall flatness, a soft layer can be wrapped by a set wrapping method, while for automotive interior parts with multi-curved shapes, a hot press wrapping method is generally used to achieve soft layer wrapping, that is, using heat and pressure to achieve the fit between the leather and the interior parts. Under the existing technology, hot press wrapping is often completed by a hot press wrapping mold designed to match the automotive interior parts. The hot press wrapping mold is equipped with an upper mold and a lower mold for fitting the leather with the interior parts. It is usually equipped with an infrared heating device for preheating the leather and the interior parts for uniform preheating. In addition, it is generally equipped with a leather clamp for pre-clamping and positioning the leather. In order to be able to perform hot press wrapping molding in one time and avoid subsequent cutting of leather residues, the leather is usually pre-cut according to the structural characteristics of the covering surface of the automotive interior parts. In actual processing, considering that leather is a soft material, it is basically dependent on manual placement of the leather in place, and then clamping and fixing it with a leather clamp.

[0004] However, the existing processing process has the following problems: 1) After the leather is pre-cut, when it is manually placed and clamped, special attention should be paid to aligning the leather and ensuring that the leather clamps are tight. The leather positioning basically relies on manual visual observation. Therefore, during actual processing, it is difficult to maintain consistent leather placement, which can easily lead to inconsistent quality of hot-pressing and overmolding of interior parts. In addition, when the leather is not fully opened manually, wrinkles will appear on the hot-pressed and coated leather, affecting its smoothness and appearance.

[0005] 2) During actual processing, multiple operations need to be performed manually, and the processing efficiency is limited by the efficiency of manual operations, making it difficult to ensure continuous and efficient processing. Summary of the invention

[0006] In order to solve the above problems, the present invention provides a hot pressing coating tool and a coating method for automobile interior decoration parts, which are used to solve the problems mentioned in the above background technology.

[0007] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solutions: a hot pressing and coating tool for automobile interior parts, including a tooling table, on which is installed an infrared heating device for synchronous preheating of interior parts and leather; the tooling table is equipped with a lower mold and an upper mold matching the lower mold, and the upper mold lifting drive is arranged directly above the lower mold; a leather pre-storage box for stacking and storing multiple pieces of leather is fixed on the tooling table, and a transfer and conveying mechanism is installed between the leather pre-storage box and the lower mold to transport the leather from the leather pre-storage box one by one to the top of the lower mold.

[0008] The transfer conveying mechanism includes a conveying chassis horizontally slidably mounted on a workbench, the conveying chassis is equipped with a avoidance driving mechanism, and the avoidance driving mechanism is equipped with a positioning component for positioning the leather and placing it flat; the conveying chassis is equipped with two leather clamps that are horizontally arranged opposite to each other and are used to clamp the two ends of the leather, and the positioning component is located between the two leather clamps.

[0009] The positioning component includes a suction cup supporting platform and a matching positioning platform distributed up and down, the suction cup supporting platform and the matching positioning platform are arranged in a vertical reverse drive, a plurality of positioning blocks for passing through the leather structure holes are fixed on the upper end surface of the matching positioning platform, and a through hole for avoiding the positioning blocks is opened on the suction cup supporting platform; two avoidance notches corresponding to the leather clamp are also arranged on the suction cup supporting platform; when the suction cup supporting platform is in the highest position, the positioning block does not protrude upward from the through hole.

[0010] The leather clamp comprises a lower supporting block and a lower pressing piece which are arranged in linkage. When the lower supporting block moves horizontally and extends into the corresponding avoidance notch, the leather is clamped between the lower pressing piece and the lower supporting block. When the leather is clamped between the two leather clamps and conveyed to the position just above the lower mold through the conveying chassis, the avoidance driving mechanism drives the positioning component to move away from the lower mold.

[0011] Preferably, the leather pre-storage box includes two box frames that are horizontally arranged opposite to each other and fixed on the workbench, a box with openings at both ends is fixed between the two box frames, a bottom sliding plate is horizontally slidably installed between the two box frames to close the bottom end of the box, and a return spring is fixedly connected between the bottom sliding plate and at least one of the box frames; the upper end surface of the bottom sliding plate is in sliding contact with the bottom end of the box, and when the suction cup support platform is in the highest position and the conveying chassis drives the positioning component to move toward the direction close to the leather pre-storage box, the suction cup support platform pushes the bottom sliding plate to slide out from the bottom end of the box.

[0012] Preferably, the conveying chassis includes a sliding base which is driven to slide horizontally on a workbench, and side panels are symmetrically fixed on the sliding base on both sides horizontally and perpendicularly to its sliding direction; the two leather clamps are mounted on the two side panels in a one-to-one correspondence.

[0013] Preferably, the avoidance driving mechanism includes a passive lifting platform vertically slidably installed on the sliding base, and the passive lifting platform is elastically connected to the sliding base; a sliding platform is slidably installed on the passive lifting platform, and the sliding platform is slidably arranged along the sliding direction of the sliding base; a track hole is opened on the side plate surface, and the track hole is composed of a vertical section and a horizontal section, the horizontal section is connected to the lower end of the vertical section by an arc transition, and the horizontal section extends in a direction away from the lower mold; two horizontally symmetrically arranged track rollers are horizontally rotatably installed on the sliding platform, and the track rollers pass through the track holes at adjacent positions and roll along the track holes; driving cylinders are hingedly installed on the two side plates, and the output ends of the driving cylinders are hinged on the sliding platform; the positioning component is assembled on the sliding platform; when the track roller moves from the vertical section of the track hole to the horizontal section, the height of the positioning component is lower than the bottom end surface of the bottom sliding plate.

[0014] Preferably, the lower supporting block is provided with a pre-pressed groove matching the contour of the interior decoration part; when the suction cup supporting platform is at the highest position, the upper end surface of the lower supporting block is flush with the upper end surface of the suction cup supporting platform.

[0015] Preferably, the leather clamp also includes a clamp cylinder horizontally fixed to the side panel by a cylinder fixing frame, the output end of the clamp cylinder is fixed with a connecting frame slidably connected to the side panel, and the lower support block is fixed to the connecting frame; the lower pressure piece includes a rotating shaft horizontally rotatably installed on the side panel, a gear is fixed on the rotating shaft, a rack is horizontally fixed on the connecting frame, the rack is located above the axis of the gear, and the rack is meshed with the gear; two pressing block rods are fixed on the rotating shaft, and pressing blocks are fixed on the two pressing block rods, and the two pressing blocks are respectively distributed on both sides of the pre-pressing groove.

[0016] Preferably, a lifting guide block is fixed to the bottom end of the suction cup supporting platform, the lifting guide block is vertically slidably installed on the sliding platform, and the matching positioning platform is vertically slidably installed on the lifting guide block; the sliding platform is equipped with a driving component that synchronously drives the suction cup supporting platform and the matching positioning platform to move vertically in opposite directions; when the driving component drives the suction cup supporting platform to descend and the matching positioning platform to rise, the positioning block is exposed upward from the through hole.

[0017] Preferably, the driving assembly includes a driving motor fixed to the bottom end of the sliding table, and a bidirectional lead screw is fixed on the output shaft of the driving motor; a No. 1 screw sleeve threadedly connected to one of the screw segments of the bidirectional lead screw is fixed to the bottom end of the suction cup supporting platform, and a No. 2 screw sleeve threadedly connected to the other screw segment of the bidirectional lead screw is fixed to the bottom end of the mating positioning platform.

[0018] Preferably, when the suction cup supporting platform is at the highest position, the upper end surface of the suction cup supporting platform is flush with the upper end surface of the bottom covering slide plate; and a discharge notch is provided at the bottom end of the box surface of the box body facing the lower mold.

[0019] In addition, the present invention also provides a method for hot pressing and coating automobile interior parts, comprising the following steps: S1, stacking and storing leather pre-cut according to the coating surface of the interior parts in a leather pre-storage box.

[0020] S2, the conveying chassis drives the positioning components to move the leather to be covered out of the leather pre-storage box, and the positioning components are used to synchronously position the leather.

[0021] S3. Clamp the leather synchronously by two leather clamps.

[0022] S4, the positioning component is driven to avoid and move to the side of the lower mold through the avoidance driving mechanism.

[0023] S5. The leather clamped by the leather clamp is further driven to move to the top of the lower mold through the conveying chassis.

[0024] S6. Snap the interior trim onto the upper mold, and preheat the interior trim and leather simultaneously using an infrared heating device.

[0025] S7. The interior trim is driven down by the upper mold. When the interior trim is in contact with the leather, the leather clamp is released. Under the cooperation and pressing of the lower mold and the upper mold, the hot pressing coating of the leather and the interior trim is completed.

[0026] S8. Take out the interior parts covered with leather by hot pressing from the lower mold.

[0027] The above technical scheme has the following advantages or beneficial effects: the present invention provides a hot pressing and coating tooling for automobile interior decoration parts, which is provided with a leather pre-storage box for pre-stacking and storing leather, and a transfer and conveying mechanism for automatically transferring and conveying leather, which is matched with the leather pre-storage box. A positioning component is provided in the transfer and conveying mechanism for moving the leather out of the leather pre-storage box piece by piece and performing synchronous positioning, so as to realize the grabbing of the leather piece by piece and the automatic flat-laying adsorption positioning of the leather. In addition, a leather clamp for clamping and fixing the leather is provided in cooperation with the positioning component, so as to complete the turning of the leather on the basis of positioning the leather by the positioning component. The tensioning and fixing at the corners can cooperate with the upper and lower molds to complete the hot pressing and coating processing of the interior decoration parts; in summary, the tooling provided by the present invention can replace manual work to complete a series of operations of automatic material collection, automatic spreading and positioning, and automatic clamping and placement of leather in the hot pressing and coating processing of specific automobile interior decoration parts, and then can cooperate to complete the continuous and automated hot pressing and coating processing, which improves the processing efficiency while ensuring the consistency and accuracy of the leather placement position, thereby improving the consistency of the hot pressing and coating molding quality of the interior decoration parts, effectively avoiding the problem of wrinkles during leather coating, and ensuring the flatness and aesthetics of the hot pressing and coating. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The present invention and its features, configurations and advantages will become more apparent by reading the detailed description of non-limiting embodiments with reference to the following drawings. The same reference numerals indicate the same parts throughout the drawings, which are not drawn to scale, with emphasis on illustrating the subject matter of the present invention.

[0029] Figure 1 It is a three-dimensional structural diagram of a hot pressing and wrapping tooling for automobile interior parts.

[0030] Figure 2 It is a top view of a hot pressing and wrapping tooling for automotive interior parts.

[0031] Figure 3 It is a side view of a hot pressing and wrapping tool for automobile interior parts.

[0032] Figure 4 yes Figure 3 A partial enlarged view of point A in the middle.

[0033] Figure 5 It is a side view showing the assembly position relationship between the leather pre-storage box and the transfer conveying mechanism.

[0034] Figure 6 It is a three-dimensional structural diagram of the transfer and conveying mechanism.

[0035] Figure 7 It is a three-dimensional assembly diagram of the conveying chassis and the avoidance drive mechanism.

[0036] Figure 8This is a three-dimensional diagram of the assembly of the positioning component and the sliding table.

[0037] Fig. 9 It is a three-dimensional diagram of the lower mold.

[0038] Fig.10 It is a three-dimensional diagram of the upper mold.

[0039] Fig.11 It is a three-dimensional structural diagram of the suction cup support platform.

[0040] Fig.12 It is a three-dimensional structural diagram of the positioning table.

[0041] Fig.13 It is a three-dimensional structural diagram of the leather clamp assembled on the side panel.

[0042] Fig.14 It is a three-dimensional structural diagram of the automobile interior decoration part subjected to hot pressing coating according to the present invention.

[0043] Fig.15 It is a diagram of the leather structure that is pre-cut for heat press wrapping.

[0044] Fig.16 It is a flow chart of the method of the present invention.

[0045] In the figure: 1. tooling table; 11. lower die; 12. cylinder frame; 121. executive cylinder; 13. upper die; 131. upper die seat; 132. guide column; 2. leather pre-storage box; 21. box frame; 22. box; 221. discharge notch; 23. bottom cover slide plate; 24. reset spring; 3. transfer conveying mechanism; 4. conveying chassis; 41. sliding base; 42. side plate; 421. track hole; 5. avoidance drive mechanism; 51. passive lifting platform; 511. guide rail; 512. guide rod; 513. compression spring; 52. sliding table; 521. sliding bar; 522. track roller; 53. Driving cylinder; 6. Positioning component; 61. Suction cup supporting platform; 611. Through hole; 612. Avoidance gap; 613. No. 1 screw sleeve; 62. Lifting guide block; 63. Coordinating positioning platform; 631. Positioning block; 632. No. 2 screw sleeve; 64. Driving assembly; 641. Driving motor; 642. Bidirectional screw; 7. Leather clamp; 71. Clamp cylinder; 72. Connecting frame; 721. Rack; 73. Lower supporting block; 731. Pre-pressing groove; 74. Lower pressing piece; 741. Rotating shaft; 742. Gear; 743. Pressing block rod; 744. Pressing block; 81. Interior decoration; 82. Leather. DETAILED DESCRIPTION

[0046] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0047] In order to enable those skilled in the art to better understand the scheme of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0048] A hot pressing and coating tool for automotive interior parts, used for Fig.14 The automotive interior part 81 shown is subjected to hot pressing and coating processing. Fig.14 The interior decoration part 81 shown in the figure is specifically an interior decoration part of a central console of an automobile.

[0049] like Figure 1 , Fig.14 and Fig.15 As shown, the tooling includes a tooling table 1, on which is installed an infrared heating device (not shown in the figure) for synchronously preheating the interior trim 81 and the leather 82. It should be noted that the infrared heating device is a common and widely used preheating mechanism installed in existing hot pressing coating equipment. The preheating treatment of the interior trim 81 and the leather 82 is to achieve the purpose of improving the adhesion and strength of the coating. According to the requirements of the automobile interior selection, the leather 82 can be artificial leather or natural leather, and the required preheating temperature and time are determined by the specific material.

[0050] like Figure 1 , Figure 3 , Fig. 9 and Fig.10 As shown, a lower die 11 is fixed to the workbench 1 by bolts, a cylinder frame 12 is fixed to the workbench 1 by bolts, an actuator cylinder 121 is vertically fixed to the top of the cylinder frame 12, an upper die base 131 is horizontally fixed to the output end of the actuator cylinder 121 by bolts, two guide pillars 132 vertically slidably mounted on the cylinder frame 12 are fixed to the top of the upper die base 131, an upper die 13 is fixed to the bottom end of the upper die base 131 by screws, the upper die 13 is matched with the lower die 11, and the upper die 13 is located directly above the lower die 11.

[0051] like Figure 1 , Figure 2 , Figure 3 , Figure 5 , Fig.14 and Fig.15As shown, a leather pre-storage box 2 for stacking and storing multiple pieces of leather 82 is fixed on the workbench 1. The leather pre-storage box 2 includes two box frames 21 that are horizontally arranged opposite to each other and fixed to the workbench 1 by bolts. A box 22 with openings at both ends is fixed between the two box frames 21 by screws. The box 22 has a square structure. A bottom cover slide 23 that closes the bottom end of the box 22 is horizontally slidably installed between the two box frames 21. A reset spring 24 is connected between the bottom cover slide 23 and the two box frames 21. Under the pulling force of the return spring 24, the bottom cover slide 23 closes the bottom end of the box body 22; the upper end surface of the bottom cover slide 23 is in sliding contact with the bottom end of the box body 22, but the bottom end of the box surface of the box body 22 facing the lower mold 11 is provided with a discharge notch 221 for facilitating the removal of the leather 82. The gap between the discharge notch 221 and the bottom cover slide 23 is greater than the thickness of one piece of leather 82 but less than the thickness of two pieces of leather 82. In this embodiment, the gap between the discharge notch 221 and the bottom cover slide 23 only allows a single piece of leather 82 to pass through. In order to allow the leather 82 to be bonded and formed in one step after the heat-coating molding is completed without further trimming and cutting, the leather 82 is usually pre-cut according to the structural features of the surface to which the interior trim 81 is bonded, to ensure that it is basically completely bonded and coated while avoiding structures such as mounting holes on the interior trim 81, such as Fig.15 The leather 82 shown is suitable for covering Fig.14 The leather 82 pre-cut and formed by the interior decoration part 81 shown in the figure has a peripheral contour of the box body 22 slightly larger than the peripheral contour of the leather 82 . The cut leather 82 can be neatly stacked and placed in the box body 22 and stacked on the bottom cover slide 23 .

[0052] like Figure 1 , Figure 3 , Figure 5 , Figure 6 , Figure 7 and Fig.15 As shown, a transfer conveying mechanism 3 is installed between the leather pre-storage box 2 and the lower mold 11 to convey the leather 82 from the leather pre-storage box 2 one by one to the top of the lower mold 11. The transfer conveying mechanism 3 includes a conveying chassis 4, and the conveying chassis 4 includes a sliding base 41 horizontally slidably mounted on the workbench 1, and side panels 42 are symmetrically welded on the sliding base 41 on both sides horizontally perpendicular to its sliding direction; the conveying chassis 4 should also include a power drive part, which is not shown in the drawings. Under the prior art, the conveying chassis 4 can be directly driven to slide by a cylinder horizontally mounted on the workbench 1, and the conveying chassis 4 can also be driven to move by a motor and a screw structure. In this embodiment, during the specific implementation, there is no restriction on the selection of the power drive part, as long as the conveying chassis 4 can move in the desired moving manner.

[0053] like Figure 1 , Figure 2 , Figure 3 , Figure 5 , Figure 6 , Figure 7 and Figure 8 As shown, the conveying chassis 4 is equipped with an avoidance driving mechanism 5, which includes a passive lifting platform 51 located above the sliding base 41, and the passive lifting platform 51 includes two guide rails 511 arranged parallel to the sliding direction of the sliding base 41, and the two guide rails 511 are symmetrically arranged in a horizontal direction perpendicular to the sliding direction of the sliding base 41. A plurality of guide rods 512 uniformly distributed along the extension direction of the guide rails 511 are welded to the bottom ends of the two guide rails 511, and the guide rods 512 are vertically slidably installed on the sliding base 41. A compression spring 513 is sleeved on the guide rod 512, and the two ends of the compression spring 513 are respectively welded to the guide rail 511 and the sliding base 41. The passive lifting platform 51 is equipped with a sliding platform 52, and the sliding platform 52 is provided with two sliding bars 521 that slide in one-to-one correspondence with the two guide rails 511; a track hole 421 is opened on the plate surface of the side plate 42, and the track hole 421 is composed of a vertical section and a horizontal section. The horizontal section is connected to the lower end of the vertical section by an arc transition, and the horizontal section extends in the direction away from the lower mold 11; track rollers 522 are installed horizontally and rotatably on the two sliding bars 521, and the track rollers 522 are axially arranged perpendicularly relative to the guide rails 511, and the two track rollers 522 are horizontally symmetrically arranged, and the track rollers 522 pass through the track holes 421 at adjacent positions and roll along the track holes 421; driving cylinders 53 are hingedly installed on the two side plates 42, and the output end of the driving cylinder 53 is hinged on the sliding bar 521 at the adjacent position.

[0054] like Figure 1 , Figure 5 , Figure 6 and Fig.15 As shown, the slide table 52 is equipped with a positioning component 6 for positioning and laying the leather 82 flat; when the track roller 522 moves from the vertical section of the track hole 421 to the horizontal section, the height of the positioning component 6 is lower than the bottom end surface of the back cover slide plate 23. Therefore, when the track roller 522 continues to roll along the horizontal section, the positioning component 6 can pass under the back cover slide plate 23.

[0055] like Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 8 , Fig.11 , Fig.12 , Fig.14 and Fig.15As shown, the positioning component 6 includes a suction cup supporting platform 61 and a matching positioning platform 63 which are distributed up and down. A plurality of positioning blocks 631 for passing through the structural holes of the leather 82 are fixed on the upper end surface of the matching positioning platform 63. The tops of the positioning blocks 631 are chamfered. Here, the structural holes of the leather 82 refer to avoidance holes or notches which are pre-cut to avoid structures such as installation holes in the interior decoration parts 81. The shape characteristics of the positioning blocks 631 are adaptively changed with the shape characteristics of the structural holes. The suction cup supporting platform 61 is an existing planar pneumatic suction cup device, and negative pressure adsorption holes are evenly distributed on its upper end surface. However, the difference is that a through hole 611 for avoiding the positioning blocks 631 is provided on the suction cup supporting platform 61. Two lifting guide blocks 62 are welded to the bottom end of the suction cup supporting platform 61, which vertically penetrate and are slidably installed on the sliding platform 52, and cooperate with the positioning platform 63 to be vertically slidably installed on the two lifting guide blocks 62; the sliding platform 52 is equipped with a driving component 64 that synchronously drives the suction cup supporting platform 61 and the cooperating positioning platform 63 to move vertically in the opposite direction; the driving component 64 includes a driving motor 641 fixed to the bottom end of the sliding platform 52 by screws, and a bidirectional lead screw 642 is welded to the output shaft of the driving motor 641; a No. 1 screw sleeve 613 threadedly connected to one of the screw segments of the bidirectional lead screw 642 is fixed to the bottom end of the suction cup supporting platform 61, and a No. 2 screw sleeve 632 threadedly connected to the other screw segment of the bidirectional lead screw 642 is fixed to the bottom end of the cooperating positioning platform 63. When the driving motor 641 is started, the bidirectional lead screw 642 can drive the suction cup support platform 61 and the matching positioning platform 63 to move synchronously in the opposite direction in the vertical direction. In this embodiment, when the suction cup support platform 61 is at the highest position, the upper end surface of the suction cup support platform 61 is flush with the upper end surface of the bottom cover slide 23, and the positioning block 631 does not appear upward from the through hole 611. When the driving component 64 drives the suction cup support platform 61 to descend and the matching positioning platform 63 to rise, the positioning block 631 appears upward from the through hole 611. In addition, when the suction cup support platform 61 is at the highest position and the conveying chassis 4 drives the positioning component 6 to move toward the direction close to the leather pre-storage box 2, the suction cup support platform 61 can push the bottom cover slide 23 to slide out from the bottom end of the box body 22 and stretch the reset spring 24.

[0056] like Figure 1 , Figure 2 , Figure 3 , Figure 5 , Figure 6 , Fig.13 , Fig.14 and Fig.15As shown, the conveying chassis 4 is equipped with two leather clamps 7 which are arranged horizontally opposite to each other and are used to clamp the two ends of the leather 82. The two leather clamps 7 are installed on the two side panels 42 in a one-to-one correspondence, and the positioning component 6 is located between the two leather clamps 7. The leather clamp 7 includes a clamp cylinder 71 which is horizontally fixed to the side panel 42 by a cylinder fixing frame. The extension direction of the clamp cylinder 71 is perpendicular to the sliding direction of the sliding base 41. A connecting frame 72 which is slidably connected to the side panel 42 is welded to the output end of the clamp cylinder 71. A rack 721 and a lower support block 73 are horizontally welded to the connecting frame 72, and the rack 721 is distributed above the lower support block 73; the lower support block 73 is provided with a pre-pressed groove 731 which matches the contour of the interior decoration part 81; a lower pressing piece 74 is provided between the rack 721 and the lower support block 73, and the lower pressing piece 74 is provided between the rack 721 and the lower support block 73. The pressing member 74 includes a rotating shaft 741 which is horizontally mounted on the side plate 42. A gear 742 is fixed on the rotating shaft 741. A rack 721 is located above the axis of the gear 742, and the rack 721 is meshed with the gear 742. The two ends of the rotating shaft 741 are symmetrically welded with a pressing rod 743, and a pressing block 744 is fixed to the end close to the two pressing rods 743. The two pressing blocks 744 are respectively distributed on both sides of the pre-pressing groove 731. The pressing blocks 744 are in a round roller structure and are made of rubber to avoid indentations on the surface of the leather 82. The suction cup support platform 61 is also provided with two avoidance notches 612 corresponding to the leather clamp 7. Through the setting of the avoidance notches 612, the two ends of the leather 82 positioned and adsorbed on the suction cup support platform 61 can cross the avoidance notches 612. The avoidance notches 612 are specifically used to avoid the lower support block 73. When the suction cup supporting platform 61 is at the highest position, the upper end surface of the lower supporting block 73 is flush with the upper end surface of the suction cup supporting platform 61 .

[0057] like Figure 1-Figure 16 As shown, in addition, the present invention also provides a method for hot pressing and coating an automobile interior decoration part 81, comprising the following steps: S1, stacking and storing leather 82 pre-cut according to the coating surface of the interior decoration part 81 in a leather pre-storage box 2. The leather 82 is placed in a specific direction as shown in Figure 2 shown.

[0058] S2, the conveying chassis 4 drives the positioning component 6 to move the leather 82 to be covered out of the leather pre-storage box 2, and the positioning component 6 synchronously positions the leather 82. Specifically, the conveying chassis 4 drives the positioning component 6 to move toward the direction close to the leather pre-storage box 2. During the movement, the suction cup supporting platform 61 will contact the side of the bottom cover slide plate 23. As the movement touches the top, the bottom cover slide plate 23 slides passively and is completely moved out from the bottom end of the box body 22. Then, the stacked leather 82 automatically falls on the table of the suction cup supporting platform 61. Then, the driving motor 641 is started, and the bidirectional lead screw 642 drives the suction cup supporting platform 61 to descend (the suction cup supporting platform 61 always keeps in contact with the bottom cover slide plate 23 during the descent process), and the positioning platform 63 rises, and the stacked leather 82 descends synchronously with the suction cup supporting platform 61, and the positioning block 631 rises synchronously with the positioning platform 63 and passes through the through hole 611 and actively passes through the structural hole of the leather 82, thereby actively adjusting and positioning the leather 82. Subsequently, the suction The disc support platform 61 fixes the leather 82 by negative pressure adsorption, and then the driving motor 641 drives in reverse to reset the suction cup support platform 61 and the matching positioning platform 63. After resetting, on the one hand, the top of the positioning block 631 is not exposed above the leather 82, so it will not cause interference during the movement of the positioning component 6 from the bottom of the box body 22. On the other hand, the surface of the suction cup support platform 61 is flush with the upper end surface of the bottom slide plate 23 again, so that when the bottom slide plate 23 is reset, the leather 82 except the positioned leather 82 can fall on the bottom slide plate 23 again; then, the conveying chassis 4 drives the positioning component 6 to move out from the bottom of the box body 22. As it continues to move out, under the rebound tension of the two reset springs 24, the bottom slide plate 23 moves into the bottom end of the box body 22 again, and the positioning component 6 stops moving when it moves to the position between the lower mold 11 and the leather pre-storage box 2.

[0059] S3, the leather 82 is clamped synchronously by two leather clamps 7. Specifically, when the positioning component 6 is located between the lower mold 11 and the leather pre-storage box 2, the two clamp cylinders 71 are started synchronously. Taking the movement of a single leather clamp 7 as an example, when the clamp cylinder 71 pushes the connecting frame 72 to move in the direction close to the positioning component 6, on the one hand, the lower support block 73 is synchronously moved to the avoidance gap 612, and on the other hand, the rack 721 moves with the connecting frame 72 and drives the gear 742 to rotate, thereby driving the pressing block rod 743 and the pressing block 744 to deflect in the direction of pressing the lower support block 73, and then clamping the leather 82 between the pressing block 744 and the lower support block 73, so that the four corner positions of the leather 82 are clamped and fixed with the cooperation of the two leather clamps 7, and then the suction and fixation of the leather 82 by the suction cup support platform 61 is released.

[0060] S4, the positioning component 6 is driven to move to the side of the lower mold 11 by the avoidance drive mechanism 5. Specifically, before hot pressing and coating, the positioning component 6 needs to be moved away from the lower mold 11, and the two driving cylinders 53 are started synchronously, so that the track roller 522 rolls along the track hole 421. When moving along the vertical section of the track hole 421, the positioning component 6 and the passive lifting platform 51 are synchronously lowered, and the positioning component 6 and the leather 82 are separated synchronously. When moving to the connection between the horizontal section and the vertical section of the track hole 421, the positioning component 6 is lowered to the lowest position. At this time, on the one hand, the avoidance notch 612 can avoid the lower support block 73, and on the other hand, the positioning component 6 can avoid the leather pre-storage box 2. As the track roller 522 continues to move, the positioning component 6 moves to the lower position of the box body 22, and the positioning component 6 is in a position to avoid the lower mold 11.

[0061] S5, the leather 82 clamped by the two leather clamps 7 is driven by the conveying chassis 4 to move to the top of the lower mold 11. At this time, the leather 82 is located between the upper mold 13 and the lower mold 11, that is, it is in the initial position to be hot-pressed and coated.

[0062] S6. Buckle the interior decoration part 81 on the upper mold 13, move the infrared heating device between the interior decoration part 81 and the leather 82, and use a top-down heating method to preheat the interior decoration part 81 and the leather 82 synchronously through the infrared heating device.

[0063] S7, start the execution cylinder 121, and drive the interior decoration part 81 to descend synchronously through the upper mold 13. The upper mold 13 drives the interior decoration part 81 to be pressed against the leather 82 and pressed into the pre-pressing groove 731. After the interior decoration part 81 and the leather 82 complete the pre-pressing contact, the clamping action of the leather clamp 7 is released, and then the cooperation and pressing between the lower mold 11 and the upper mold 13 are completed instantly. Under a period of continuous pressure, the hot pressing coating of the leather 82 and the interior decoration part 81 is completed.

[0064] S8, taking out the interior decoration part 81 after the leather 82 is hot-pressed and coated from the lower mold 11. It should be added that negative pressure adsorption pores can be provided on the plane part of the lower mold 11, so that when the upper mold 13 is reset, the interior decoration part 81 after the hot-pressing and coating can be adsorbed on the lower mold 11, so that the robot can conveniently pick up the material at a fixed point.

[0065] The present invention provides a hot-pressing coating tool for automobile interior decoration parts, which is provided with a leather pre-storage box 2 for pre-stacking and storing leather 82, and a transfer and conveying mechanism 3 for automatically transferring and conveying the leather 82, which is matched with the leather pre-storage box 2. A positioning component 6 is provided in the transfer and conveying mechanism 3 for moving the leather 82 out of the leather pre-storage box 2 one by one and performing synchronous positioning, so as to achieve the capture of the leather 82 one by one and the automatic flat-laying adsorption positioning of the leather 82. In addition, a leather clamp 7 for clamping and fixing the leather 82 is provided in cooperation with the positioning component 6, so as to complete the tensioning of the corners of the leather 82 on the basis of the positioning of the leather 82 by the positioning component 6. Fixed, so as to cooperate with the upper mold 13 and the lower mold 11 to complete the hot pressing and coating processing of the interior decoration part 81; in summary, the tooling provided by the present invention can replace manual work to complete a series of operations of automatic material collection, automatic spreading and positioning, and automatic clamping and placement of the leather 82 during the hot pressing and coating processing of a specific automobile interior decoration part 81, and then can cooperate to complete the continuous and automated hot pressing and coating processing, which improves the processing efficiency while ensuring the consistency and accuracy of the placement position of the leather 82, thereby improving the consistency of the hot pressing and coating molding quality of the interior decoration part 81, effectively avoiding the problem of wrinkles when the leather 82 is coated, and ensuring the flatness and aesthetics of the hot pressing and coating.

[0066] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0067] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "connect", "install", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0068] The above describes the preferred embodiments of the present invention. It should be understood that the present invention is not limited to the above-mentioned specific embodiments, and the devices and structures that are not described in detail should be understood to be implemented in a common manner in the art; any technician familiar with the art can make many possible changes and modifications without departing from the technical solution of the present invention, or modify them into equivalent embodiments with equivalent changes, which does not affect the essential content of the present invention. Therefore, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of protection of the technical solution of the present invention.

Claims

1. A hot-pressing coating tool for automobile interior parts, comprising a tooling table (1), wherein the tooling table (1) is equipped with an infrared heating device for synchronously preheating interior parts (81) and leather (82); the tooling table (1) is equipped with a lower mold (11) and an upper mold (13) matched with the lower mold (11), and the upper mold (13) is arranged to be lifted and driven directly above the lower mold (11); the characteristics are: A leather pre-storage box (2) for stacking and storing a plurality of pre-cut leathers (82) is fixed on the workbench (1); a transfer and conveying mechanism (3) for conveying the leathers (82) from the leather pre-storage box (2) to the top of the lower mold (11) is arranged between the leather pre-storage box (2) and the lower mold (11); wherein: The transfer conveying mechanism (3) comprises a conveying chassis (4) horizontally slidably mounted on a workbench (1), the conveying chassis (4) being equipped with a position-avoiding driving mechanism (5), the position-avoiding driving mechanism (5) being equipped with a positioning component (6) for positioning and laying the leather (82) flat; the conveying chassis (4) being equipped with two leather clamps (7) horizontally arranged opposite to each other and used to clamp the two ends of the leather (82), the positioning component (6) being located between the two leather clamps (7); The positioning component (6) comprises a suction cup support platform (61) and a matching positioning platform (63) which are arranged in an upper and lower distribution. The suction cup support platform (61) and the matching positioning platform (63) are arranged in a vertical reverse drive manner. A plurality of positioning blocks (631) for passing through the structural holes of the leather (82) are fixed on the upper end surface of the matching positioning platform (63). The structural holes of the leather (82) are avoidance holes formed by pre-cutting to avoid the mounting holes in the interior decoration (81). The suction cup support platform (61) is provided with a through hole (611) for avoiding the positioning block (631). The suction cup support platform (61) is also provided with two avoidance notches (612) which correspond to the leather clamp (7). When the suction cup support platform (61) is in the highest position, the positioning block (631) does not protrude upward from the through hole (611). The leather clamp (7) comprises a lower supporting block (73) and a lower pressing piece (74) which are arranged in a linked manner. When the lower supporting block (73) moves horizontally to extend into the corresponding avoidance notch (612), the leather (82) is clamped between the lower pressing piece (74) and the lower supporting block (73). When the leather (82) is clamped between the two leather clamps (7) and is transported to a position just above the lower mold (11) through the transport chassis (4), the avoidance drive mechanism (5) drives the positioning component (6) to move away from the lower mold (11). The leather pre-storage box (2) comprises two box frames (21) arranged horizontally opposite to each other and fixed on the workbench (1); a box (22) with upper and lower ends being open is fixed between the two box frames (21); a bottom cover slide (23) is horizontally slidably installed between the two box frames (21) to close the bottom end of the box (22); a return spring (24) is fixedly connected between the bottom cover slide (23) and at least one of the box frames (21); the upper end surface of the bottom cover slide (23) is in sliding contact with the bottom end of the box (22); The conveying chassis (4) comprises a sliding base (41) which is installed on the workbench (1) in a horizontally sliding manner, and side panels (42) are symmetrically fixed on the sliding base (41) on both sides thereof in a horizontal direction perpendicular to the sliding direction; the two leather clamps (7) are mounted on the two side panels (42) in a one-to-one correspondence; The avoidance driving mechanism (5) comprises a passive lifting platform (51) vertically slidably mounted on a sliding base (41), wherein the passive lifting platform (51) is elastically connected to the sliding base (41); a sliding platform (52) is slidably mounted on the passive lifting platform (51), wherein the sliding platform (52) is slidably arranged along the sliding direction of the sliding base (41); a track hole (421) is formed on the surface of the side plate (42), wherein the track hole (421) is composed of a vertical section and a horizontal section, wherein the horizontal section is connected to the lower end of the vertical section in an arc transition, and the horizontal section extends in a direction away from the lower mold (11); Two horizontally symmetrically arranged track rollers (522) are mounted on the sliding table (52) for horizontal rotation, and the track rollers (522) pass through the track holes (421) at adjacent positions and roll along the track holes (421); a driving cylinder (53) is hingedly mounted on the two side panels (42), and the output end of the driving cylinder (53) is hingedly mounted on the sliding table (52); the positioning component (6) is mounted on the sliding table (52); when the track roller (522) moves from the vertical section of the track hole (421) to the horizontal section, the height of the positioning component (6) is lower than the bottom end surface of the bottom cover slide plate (23); A lifting guide block (62) is fixed at the bottom end of the suction cup supporting platform (61), and the lifting guide block (62) is mounted on the sliding platform (52) in a vertical sliding manner, and the matching positioning platform (63) is mounted on the lifting guide block (62) in a vertical sliding manner; the sliding platform (52) is equipped with a driving component (64) for synchronously driving the suction cup supporting platform (61) and the matching positioning platform (63) to move vertically in opposite directions; when the driving component (64) drives the suction cup supporting platform (61) to descend and the matching positioning platform (63) to ascend, the positioning block (631) is exposed upward from the through hole (611); When the suction cup supporting platform (61) is at the highest position, the upper end surface of the suction cup supporting platform (61) is flush with the upper end surface of the bottom cover slide plate (23); a discharge notch (221) is provided at the bottom end of the box surface of the box body (22) facing the lower mold (11), and the gap between the discharge notch (221) and the bottom cover slide plate (23) only allows a single piece of leather (82) to pass through.

2. The hot pressing and coating tooling for automobile interior parts according to claim 1, characterized in that: The leather clamp (7) further comprises a clamp cylinder (71) horizontally fixed to the side plate (42) via a cylinder fixing frame, a connecting frame (72) slidably connected to the side plate (42) being fixed to the output end of the clamp cylinder (71), and the lower support block (73) being fixed to the connecting frame (72); the lower pressing member (74) comprises a rotating shaft (741) horizontally rotatably mounted on the side plate (42), a gear (742) being fixed to the rotating shaft (741), a rack (721) being horizontally fixed to the connecting frame (72), the rack (721) being located above the axis of the gear (742), and the rack (721) being meshed with the gear (742); two pressing block rods (743) being fixed to the rotating shaft (741), a pressing block (744) being fixed to each of the two pressing block rods (743), and the two pressing blocks (744) being respectively distributed on both sides of the pre-pressing groove (731).

3. The hot pressing and coating tooling for automobile interior parts according to claim 1, characterized in that: The driving assembly (64) comprises a driving motor (641) fixed to the bottom end of the sliding platform (52), and a bidirectional lead screw (642) is fixed to the output shaft of the driving motor (641); a No. 1 screw sleeve (613) threadedly connected to one of the screw segments of the bidirectional lead screw (642) is fixed to the bottom end of the suction cup supporting platform (61), and a No. 2 screw sleeve (632) threadedly connected to the other screw segment of the bidirectional lead screw (642) is fixed to the bottom end of the matching positioning platform (63).

4. A method for hot pressing and coating automobile interior parts, which is completed by using a hot pressing and coating tooling as claimed in claim 1, characterized in that: The specific steps include: S1, stacking and storing leather (82) pre-cut according to the covering surface of the interior decoration part (81) in a leather pre-storage box (2); S2, driving the positioning component (6) via the conveying chassis (4) to move the leather (82) to be covered out of the leather pre-storage box (2), and synchronously positioning the leather (82) via the positioning component (6); S3, synchronously clamping the leather (82) by two leather clamps (7); S4, driving the positioning component (6) to avoid and move to one side of the lower mold (11) through the avoidance driving mechanism (5); S5, further driving the leather (82) clamped by the leather clamp (7) to move to just above the lower mold (11) through the conveying chassis (4); S6, buckling the interior decoration part (81) onto the upper mold (13), and simultaneously preheating the interior decoration part (81) and the leather (82) by using an infrared heating device; S7, driving the interior decoration part (81) downward by the upper mold (13), releasing the leather clamp (7) when the interior decoration part (81) and the leather (82) are in contact, and completing the hot pressing wrapping of the leather (82) and the interior decoration part (81) under the cooperation and pressing of the lower mold (11) and the upper mold (13); S8, taking out the interior decoration part (81) coated with the leather (82) by heat pressing from the lower mold (11).

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