Automobile B-pillar interior trim part covering and edge covering equipment and method

Abstract

The invention provides an automobile B-pillar interior trim part covering and edge covering device and method.The automobile B-pillar interior trim part covering and edge covering device comprises an upper die used for carrying a framework, a lower die used for carrying a skin and a control module, and the lower die is provided with a first edge covering mechanism and a second edge covering mechanism; each of the plurality of clamps is provided with a clamp for clamping the edge of the skin, a lifting cylinder for driving the clamp to lift, and a forward pushing driver for driving the clamp to push forwards towards the framework, so that the plurality of clamps can clamp the edge of the skin, pull the edge upwards and push the edge towards the interior of the framework under the control of the control module, and the process flow of covering and edge covering is automatically realized. Especially, due to the fact that the forward pushing driver is a servo motor, follow-up forward pushing driving can be achieved under the control of the control template, the clamp can pull the edge of the skin upwards and push the edge of the skin forwards in a follow-up mode, the device can adapt to the complex shape of the edge of the skeleton, the ideal attaching edge covering effect is achieved, and the production efficiency is improved. And the production efficiency and the yield of the B-pillar interior trim parts are improved.

Description

Technical Field

[0001] The invention belongs to the technical field of automobile component processing equipment, and in particular relates to an automobile B-pillar interior trim laminating and edge wrapping equipment and a corresponding method. Background Art

[0002] There are a large number of interior parts in cars, most of which are made of a corresponding skeleton with a certain concave-convex structure attached to the skin, and the edge of the skin is wrapped on the edge of the skeleton. With the development of technology and the continuous improvement of the practicality and aesthetics of automobile interior parts, the structure of automobile interior parts has become more complex, and the requirements for lamination and edge wrapping are getting higher and higher.

[0003] In a certain car model, the frame of the interior parts of the B-pillar (the column between the front and rear windows) of the car has a complex concave-convex structure and edge structure, and the surface is made of thermoplastic polyolefin elastomer (TPO). Although this material has many advantages, the surface made of it has limited elasticity, which makes it very difficult to laminate and wrap the surface. At present, experienced workers generally fix the frame on the corresponding profiling mold first, and then manually spray glue, laminate, and wrap the surface. At the places with complex concave-convex structures and edge structures, the corresponding pressing tools are used to make the surface fit along the outer surface of the frame as much as possible, and the edge of the surface is bent and wrapped along the edge of the frame. This processing method is very inefficient. Although there are some laminating and hemming equipment for automotive interior parts in the prior art, these equipment generally use a profiling block to push the skin to laminate and hem the frame with a relatively simple structure. If used to laminate and hem the above-mentioned frame, the hemming effect is not ideal, especially for the edges with complex structures (such as curved edges with gradual cross-sections), it is difficult to achieve a good hemming effect, and defects such as poor fit and empty packaging are prone to occur. Manual inspection and rework are required after automatic processing. If the skin is stretched with great force and then laminated to the frame in an attempt to overcome the above defects, the skin is likely to be damaged or even torn due to the material of the skin.

[0004] Therefore, in order to realize the automated production of the above-mentioned B-pillar interior parts and improve their production efficiency, a new type of laminating and edge wrapping equipment and corresponding production and processing technology are needed. Summary of the invention

[0005] The present invention is made to solve the above problems, and aims to provide a device capable of fully automatically laminating and hemming the B-pillar interior trim of an automobile with a curved gradient edge and a relatively complex structure. The present invention adopts the following technical solutions:

[0006] The present invention provides an automobile B-pillar interior part laminating and edge-wrapping equipment, which is used to laminate a skin coated with glue on a skeleton and perform edge-wrapping to make a B-pillar interior part, wherein the skeleton has a first side portion and a second side portion with a gradient cross-sectional shape, and the equipment has the following technical features, which include: an upper mold for carrying the skeleton; a lower mold for carrying the skin and cooperating with the upper mold for laminating and edge-wrapping; and a control module for controlling the laminating and edge-wrapping process, wherein the lower mold has a first edge-wrapping mechanism and a second edge-wrapping mechanism, which are respectively used to laminate and edge-wrapped the first side portion and the second side portion, and each of the skin clamping assemblies includes: a clip , used to clamp the edge of the skin; a lifting drive, used to drive the clamp to lift; and a forward push drive, which is a servo motor, used to drive the clamp to push forward toward the skeleton, the control module at least includes: an edge preparation control unit, used to control the upper mold to press down toward the lower mold, so that the skin is covered on the skeleton to complete the edge preparation; and an edge control unit, used to control each of the lifting drives to drive the corresponding clamp to move upward to tighten the edge of the skin upward after the edge preparation is completed, and at the same time control each of the forward push drives to drive the clamp to push forward toward the skeleton in a follow-up manner, thereby completing the overlapping edge wrapping of the first edge portion and the second edge portion.

[0007] The automobile B-pillar interior trim laminating and edging equipment provided by the present invention may also have such technical features, wherein the upper mold has a pressing mold for carrying the skeleton, which has a contoured surface matching the inner side surface of the skeleton, and the lower mold also has a supporting mold for carrying the skin, and the first edging mechanism and the second edging mechanism are respectively arranged on both sides of the supporting mold in the width direction, and the first edging mechanism and the second edging mechanism also respectively have an edge pressing assembly, which includes: a contoured pressing block, which is in the shape of a long strip and has a contoured pressing surface matching the outer surface of the first edge or the second edge facing the supporting mold; and one or more oblique push drivers, which are used to drive the contoured pressing block to move obliquely upward, and after completing the edging preparation, the edging control unit first controls the oblique push driver to drive the corresponding contoured pressing block to press toward the first edge or the second edge, and then controls the lifting driver and the forward push driver to perform laminating and edging.

[0008] The automobile B-pillar interior trim laminating and edging equipment provided by the present invention may also have such technical features, wherein the multiple skin clamping assemblies of the first edging mechanism and the second edging mechanism are arranged in sequence, and there is a gap between two adjacent skin clamping assemblies, the edge pressing assembly includes a plurality of oblique push drivers, which are respectively arranged at the gaps, the contoured pressing blocks are respectively connected to the plurality of oblique push drivers, and the front ends of the multiple clips of the first edging mechanism and the second edging mechanism are arranged in sequence and connected to form an arc that matches the first edge or the second edge.

[0009] The automobile B-pillar interior trim laminating and edging equipment provided by the present invention may also have such technical features, wherein the lower mold also includes a skin pre-positioning mechanism for tensioning and pre-positioning the skin, which includes a plurality of positioning components, each of which includes: a hanging needle for passing through a needle hole reserved on the skin; and a lifting cylinder for driving the hanging needle to lift and lower, the skin clamping assembly also includes a clamping cylinder for driving the clamp to clamp or open, the control module also includes a workpiece fixing control unit for controlling the plurality of clamping cylinders to drive the corresponding clamps to clamp the edge of the skin tensioned by the plurality of hanging needles, and then controlling the plurality of lifting cylinders to drive the corresponding hanging needles to move downward, thereby separating the hanging needles from the skin.

[0010] The automobile B-pillar interior trim laminating and edging equipment provided by the present invention may also have such a technical feature, wherein a plurality of the positioning components are arranged along the circumference of the supporting mold, and are respectively arranged at the positions corresponding to the four corners of the skeleton, the first side and the second side, and the positioning component also includes an extension plate, one end of which is arranged on the output end of the lifting cylinder, and the other end is provided with the hanging needle, and the hanging needle is arranged vertically upward.

[0011] The automobile B-pillar interior trim laminating and edging equipment provided by the present invention may also have such technical features, wherein a skeleton detection sensor is provided at the upper mold, and a skin detection sensor is provided at the lower mold, and the control module also includes a workpiece detection unit, which is used to detect whether the upper mold is provided with the skeleton through the skeleton detection sensor, and detect whether the lower mold is provided with the skin through the skin detection sensor, and when the workpiece detection unit detects that the lower mold is provided with the skin, the workpiece fixing control unit controls the multiple clamping cylinders to drive the corresponding clamps to clamp the skin edge, and then controls the multiple lifting cylinders to drive the corresponding hanging needles to move downward.

[0012] The automobile B-pillar interior trim laminating and edging equipment provided by the present invention may also have such technical features, wherein the upper mold also has: a clamping mechanism, which includes a plurality of upper mold clamping cylinders arranged along the circumference of the clamping mold tire, and a clamping rod driven by each of the upper mold clamping cylinders; and a side pressure mechanism, which includes a plurality of side pressure blocks arranged above the clamping mold tire, and a plurality of side push cylinders for driving the side pressure blocks to be pushed out obliquely downward, the side pressure blocks having a contoured surface matching the inner side surface of the skeleton, and the workpiece fixing control unit also controls the plurality of upper mold clamping cylinders to drive the corresponding clamping rods to rotate when the workpiece detection unit detects that the upper mold is provided with the skeleton, and controls the plurality of side push cylinders to drive the corresponding side pressure blocks to be pushed out obliquely downward, thereby clamping the skeleton.

[0013] The automotive B-pillar interior trim laminating and edging equipment provided by the present invention may also have such technical features, the equipment also includes: a heating mechanism, used to heat the surface to activate the glue; and an auxiliary heating mechanism, arranged in the upper mold, used to supplement the heating of the to-be-edged area of ​​the skeleton, wherein the upper surface of the supporting mold is a concave surface matching the outer surface of the skeleton, and the heating mechanism includes: a lamp tube rack, which is in the shape of a bent plate matching the concave surface; a plurality of heating lamps, fixed on the lamp tube rack; and a heating transplanting motor, used to drive the The lamp tube rack moves, the auxiliary heating mechanism includes a plurality of heating lamp tubes, which are arranged in a ring shape above the pressing mold, and the control module also includes a heating control unit, which is used to control the heating transplanting motor to drive the lamp tube rack to move to the concave surface to heat the surface before edge wrapping preparation, and control the heating transplanting motor to drive the lamp tube rack to move to the outside of the lower mold after heating is completed; and is used to control the auxiliary heating mechanism to supplement the heating of the area to be edged of the skeleton before or during the edge wrapping.

[0014] The automobile B-pillar interior parts laminating and edging equipment provided by the present invention may also have such technical features, the upper mold also has an upper mold cooling mechanism, including a flow channel arranged in the clamping mold and a water channel interface arranged on the outside of one side of the clamping mold, for circulating coolant, and the lower mold also has a lower mold cooling mechanism, including a flow channel arranged in the supporting mold and a water channel interface arranged on the outside of one side of the supporting mold, for circulating coolant, thereby cooling the B-pillar interior parts after laminating and edging.

[0015] The present invention provides a method for laminating and edging an automobile B-pillar interior part, which is used for laminating a skin coated with glue on a skeleton and performing edging to make a B-pillar interior part, wherein the skeleton has a first side portion and a second side portion with a gradient cross-sectional shape. The method has the following technical features, and is carried out using the above-mentioned automobile B-pillar interior part laminating and edging equipment, and the method at least includes the following steps: an edging preparation step, in which the upper mold carrying the skeleton is pressed downward toward the lower mold carrying the skin, so that the skin is covered on the skeleton; and an edging step, in which the corresponding clamps clamping the skin edges are driven upward by each of the lifting drives to tighten the skin edges, and at the same time, the clamps are driven forward toward the skeleton in a follow-up manner by each of the forward pushing drives, thereby completing the laminating and edging of the first side portion and the second side portion.

[0016] Functions and Effects of the Invention

[0017] According to the present invention, the automotive B-pillar interior parts laminating and hemming equipment and method include an upper mold for carrying a skeleton, a lower mold for carrying a skin, and a control module, wherein the lower mold has a first hemming mechanism and a second hemming mechanism, both of which have a clamp for clamping the skin edge, a lifting driver for driving the clamp to lift and lower, and a forward push driver for driving the clamp to push forward toward the skeleton, so that under the control of the control module, multiple clamps can clamp the skin edge, pull it up, and then push it inward toward the skeleton, thereby automatically realizing the process of laminating and hemming. In particular, since the forward push driver is a servo motor, a follow-up forward push drive can be realized under the control of the control template, so that the clamp can pull the skin edge upward while pushing forward toward the skeleton in a follow-up manner, so that the equipment can adapt to the complex shapes of the first side and the second side of the skeleton, achieve an ideal fitting hemming effect, avoid damaging the skin with relatively less elasticity during the hemming process, and improve the production and processing efficiency and yield rate of automotive B-pillar interior parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional diagram of the partial structure of the laminating and hemming equipment for the interior trim of the B-pillar of an automobile in an embodiment of the present invention;

[0019] Figure 2 is a three-dimensional diagram of an upper mold in an embodiment of the present invention;

[0020] Figure 3 yes Figure 1 An enlarged view of the portion within the middle frame A;

[0021] Figure 4 is a stereoscopic diagram of an epidermal pre-positioning mechanism in an embodiment of the present invention;

[0022] Figure 5 is a three-dimensional diagram of the hemming mechanism in an embodiment of the present invention;

[0023] Figure 6 is a stereoscopic diagram of a skin clamping assembly according to an embodiment of the present invention;

[0024] Figure 7 is a three-dimensional diagram of a clip according to an embodiment of the present invention;

[0025] Figure 8 is a logic block diagram of a control module in an embodiment of the present invention;

[0026] Fig. 9 is a flow chart of a method for laminating and hemming an automobile B-pillar interior trim according to an embodiment of the present invention;

[0027] Fig.10 is a flow chart of step S5 in an embodiment of the present invention;

[0028] Fig.11 is a three-dimensional diagram of the framework of the B-pillar interior trim component in an embodiment of the present invention;

[0029] Fig.12 It is a stereoscopic view of the skeleton of the B-pillar interior decoration component at different angles in an embodiment of the present invention.

[0030] Reference numerals:

[0031] Automobile B-pillar interior parts laminating and hemming equipment 100; equipment frame 10; upper mold 20; upper mold frame 21; mounting plate 211; position adjustment block 212; lifting and side pressure mechanism 22; upper mold lifting frame 221; lifting cylinder 222; pressing mold 223; side pressure block 224; side push cylinder 225; clamping mechanism 23; clamping cylinder 231; upper mold clamping rod 232; auxiliary heating mechanism 24; infrared lamp 241; upper mold cooling mechanism 25; water channel interface 251; lower mold 30; supporting mold 31; skin pre-positioning mechanism 32; positioning assembly 321; lifting cylinder 5-1 to 5-8; extension plate 3212; hanging needle 3213; first hemming mechanism 3 3; epidermis clamping assembly 331; translation assembly 3311; bracket 3312; transmission assembly 3313; forward motor 31-1~31-3; lifting cylinder 1-1~1-3; clamping cylinder 2-1~2-3; clamp 3314; upper clamping plate 33141; lower clamping plate 33142; barb 33142a; edge clamping assembly 332; oblique push cylinder 6-1, 6-2; contour clamping block 3321; second edge wrapping mechanism 34; epidermis clamping assembly 341; clamp 3414; forward motor 32-1~32-3; lifting cylinder 3-1~3-3; clamping cylinder 4-1~4-3; edge clamping assembly 342; contour clamping block 3421; oblique push cylinder 6-3, 6-4; third edge binding mechanism 35; front push cylinder 7; front push cylinder 10-1, 10-2; lifting cylinder 11-1, 11-2; lifting cylinder 8-3, 8-4; front push cylinder 9-3, 9-4; linkage plate 351; corner edge binding block 352; edge binding matching block 355; edge pressing block 356; fourth edge binding mechanism 36; lifting cylinder 8-1, 8-2; front push cylinder 9-1, 9-2; front push cylinder 10-3; lifting cylinder 11-3; corner edge binding blocks 361, 362; edge pressing block 363; heating mechanism 40; lamp tube rack 41; infrared lamp tube 42; heating plug cylinder 43; heating shift Planting motor 44; solenoid valve 60; control module 50; workpiece detection unit 51; workpiece fixing control unit 52; heating control unit 53; edge wrapping preparation control unit 54; edge wrapping control unit 55; reset control unit 56; cooling control unit 57; general control unit 58; skeleton 9; first side 91; first portion to be wrapped 911; second portion to be wrapped 912; third portion to be wrapped 913; second side 92; fourth portion to be wrapped 921; fifth portion to be wrapped 922; sixth portion to be wrapped 923; third side 93; fourth side 94; first recess 95; first arc surface 951; second arc surface 952; second recess 96; torsion surface 961; third arc surface 962. DETAILED DESCRIPTION

[0032] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the following is a detailed description of the automotive B-pillar interior trim laminating and hemming equipment and method of the present invention in conjunction with embodiments and drawings.

[0033] <Example>

[0034] This embodiment provides an automobile B-pillar interior part laminating and hemming equipment, which is used to attach an upper skin to a frame of a specific shape and perform hemming operations to process a B-pillar interior part. In order to better explain the structure and function of the equipment, the structure of the B-pillar interior part frame involved will be briefly described below.

[0035] Fig.11 is a three-dimensional diagram of the skeleton of the B-pillar interior trim in this embodiment, Fig.12 It is a three-dimensional view of the skeleton of the B-pillar interior decoration part in this embodiment at different angles.

[0036] like Fig.11 and Fig.12 As shown, the skeleton 9 of the B-pillar interior of this model is a thin shell-like part, and the two sides in the width direction are rolled up toward the same side, so that the whole is roughly U-shaped. For the convenience of description, the length direction of the skeleton 9 is recorded as the x direction, the width direction is recorded as the y direction, and the thickness direction is recorded as the z direction. For the convenience of description, the two sides of the skeleton 9 along the rolling direction are recorded as the first side 91 and the second side 92, and the other two sides are recorded as the third side 93 and the fourth side 94. The first side 91 and the second side 92 are roughly in the shape of long strips and have variable widths, and their outer surfaces are relatively complex curved surfaces. The third side 93 and the fourth side 94 are roughly U-shaped.

[0037] A first concave portion 95 is formed on one side of a diagonal direction of the frame 9. The outer surface of the first concave portion 95 is concave along the z direction relative to the outer surface of the middle portion of the frame 9. It has a first curved surface 951 connected to the outer surface of the middle portion and having a larger curvature and a smaller area, and a relatively flat second curved surface 952 with a larger area. The transition portion between the first concave portion 95 and the two bent side edges of the frame 9 is arc-shaped, but is sharper than the transition portion between the middle portion and the side edge of the frame 9 (i.e., the radius of curvature is smaller).

[0038] A second recess 96 is formed on the other side of the diagonal direction of the skeleton 9, and the outer surface of the second recess 96 is also recessed along the z-direction relative to the outer surface of the middle part of the skeleton 9, and has a torsion surface 961 connected to the side and gradually twisted in the y-axis direction relative to the side, and a relatively flat third arc surface 962 with an overall surface direction inclined relative to the side and a smaller arc.

[0039] Due to the existence of the two recesses, the first edge portion 91 can be roughly divided into three sections: a first to-be-packed portion 911 whose cross-sectional outer contour is roughly L-shaped with rounded corners, a second to-be-packed portion 912 having a protruding arc-shaped corner and whose cross-sectional outer contour shape gradually changes, and a third to-be-packed portion 913 whose cross-sectional outer contour is also roughly L-shaped with rounded corners and whose curvature radius is smaller than that of the first to-be-packed portion.

[0040] The second side portion 92 can also be roughly divided into three sections: a fourth to-be-wrapped portion 921 whose cross-sectional outer contour is roughly L-shaped with rounded corners, a fifth to-be-wrapped portion 922 whose cross-sectional outer contour has two bends and whose cross-sectional outer contour shape gradually changes, and a sixth to-be-wrapped portion 923 whose cross-sectional outer contour has two bends.

[0041] The material of the skeleton 9 is engineering plastic alloy, and the material of the skin is thermoplastic polyolefin elastomer (TPO), with a thickness of 2 to 3 mm.

[0042] It can be seen that the skeleton 9 has a very complex curved shape. When the existing equipment based on the contour block pushing method is used to cover and edge the skeleton 9 with skin, it is affected by the two recessed parts, especially in the second part to be wrapped 912, the fifth part to be wrapped 922, and the sixth part to be wrapped 923. The skin is not ideally covered, including defects such as empty bags under the skin and adhesion of skin parts. If the skin is pulled hard to tighten it and cover it in an attempt to solve these problems, the skin is easily damaged or even torn due to the limited elasticity of the skin material and the thin thickness of the skin.

[0043] The device provided in this embodiment is intended to solve the above-mentioned problem.

[0044] Figure 1 is a three-dimensional diagram of the partial structure of the automobile B-pillar interior trim laminating and hemming equipment in this embodiment, Figure 2 It is a three-dimensional diagram of the upper mold in this embodiment.

[0045] like Figure 1 and Figure 2 As shown, the automobile B-pillar interior trim laminating and hemming equipment 100 (hereinafter referred to as equipment 100 ) includes an equipment frame 10 , an upper mold 20 arranged in the equipment frame 10 , a lower mold 30 , a heating mechanism 40 , and a solenoid valve 60 .

[0046] The upper mold 20 is used to carry the frame, and the lower mold 30 is used to carry the skin coated with glue. The upper mold 20 and the lower mold 30 are also used to cooperate with each other to cover the skin on the frame and perform hemming. The heating mechanism 40 is used to heat the skin coated with glue to activate the glue.

[0047] The upper mold 20 includes an upper mold frame 21 , a lifting and side pressing mechanism 22 , a clamping mechanism 23 , an auxiliary heating mechanism 24 , and an upper mold cooling mechanism 25 .

[0048] The upper mold frame 21 is movably arranged at the top of the equipment frame 10, and its uppermost part is a horizontally arranged mounting plate 211. The four corners of the mounting plate 211 are respectively provided with an L-shaped position adjustment block 212. The two ends of the position adjustment block 212 are respectively connected to the mounting plate 211 by adjusting bolts. By adjusting the position of each position adjustment block 212 relative to the mounting plate 211, the maximum stroke position of the upper mold frame 21 can be adjusted.

[0049] The lifting and side-pressing mechanism 22 includes an upper mold lifting frame 221 , a plurality of lifting cylinders 222 , a clamping mold 223 , two side-pressing blocks 224 , and two side-pushing cylinders 225 .

[0050] There are two lifting cylinders 222, which are fixed on both sides of the upper mold frame 21, and their piston rods are vertically downward and connected to the upper mold lifting frame 221, so that the upper mold lifting frame 221 can be lifted and lowered relative to the upper mold frame 21. The pressing mold tire 223 is installed at the bottom of the upper mold lifting frame 221. The lower surface of the pressing mold tire 223 is a contoured surface that matches the inner side of the skeleton 9, and a skeleton detection sensor is provided to detect whether there is a skeleton 9 assembled on the pressing mold tire 223.

[0051] The two side push cylinders 225 are respectively installed on the upper mold lifting frame 221 and are located above the compression mold tire 223, and their piston rods are respectively facing the two sides of the width direction of the compression mold tire 223, and the piston rods are tilted downward. The two side pressure blocks 224 are respectively connected to the piston rods of the corresponding side push cylinders 225 through corresponding connecting plates, and are provided with corresponding guide components (guide rail sliders, etc. arranged obliquely). When the piston rod is retracted, the side pressure block 224 is located above one side of the compression mold tire 223, and when the piston rod is extended, the side pressure block 224 is pushed out obliquely downward. The two side pressure blocks 224 respectively have contoured surfaces that match the inner side surfaces of the two side portions of the skeleton 9, and because the inner sides of the two side portions have reinforcing ribs, a plurality of strip grooves corresponding to the reinforcing ribs are also formed on the side pressure blocks 224.

[0052] The clamping mechanism 23 includes a plurality of upper mold clamping cylinders 231 and corresponding upper mold clamping rods 232, five of which are circumferentially distributed along the lower end of the lower mold frame 21. The upper mold clamping rods 232 rotate toward the middle under the drive of the cylinder to clamp the skeleton 9 together.

[0053] The auxiliary heating mechanism 24 includes a plurality of infrared lamp tubes 241 , five in this embodiment, which are arranged above the clamping mold 223 through corresponding brackets and circumferentially arranged along the outer periphery of the upper mold lifting frame 221 for supplementary heating of the area to be hemmed of the skeleton 9 .

[0054] The upper mold cooling mechanism 25 includes a flow channel (not shown in the figure) arranged in the pressing mold 223 and a water channel interface 251 located outside one side of the pressing mold 223, which is used to circulate cooling liquid to cool the interior decoration parts after the laminated and hemmed parts are completed.

[0055] Figure 3 yes Figure 1 Enlarged view of the portion within frame A.

[0056] like Figure 3 As shown, the lower mold 30 includes a supporting mold 31, a skin pre-positioning mechanism 32 (skin dragging mechanism), a first edge wrapping mechanism 33, a second edge wrapping mechanism 34, a third edge wrapping mechanism 35, a fourth edge wrapping mechanism 36, and a lower mold cooling mechanism (not shown in the figure).

[0057] The upper surface of the supporting mold 31 is a contoured surface matching the outer surface of the frame 9, and is used to cooperate with the pressing mold 223 of the upper mold 20 to laminate the skin and the frame.

[0058] Figure 4 It is a three-dimensional diagram of the skin pre-positioning mechanism in this embodiment. Since a large number of edge-wrapping related structures need to be set in the limited space around the supporting mold, a coupled structural design is adopted, and some structural parts of the edge-wrapping mechanism are also shown in the figure.

[0059] like Figure 4 As shown, the epidermis pre-positioning mechanism 32 is used to pre-position the epidermis, and includes a plurality of positioning components 321, eight in total in this embodiment. Four positioning components 321 are respectively arranged at the four corners of the supporting mold 31 (i.e., at the four corners of the epidermis on the mold). The other four positioning components 321 are distributed in pairs on both sides of the two long sides of the supporting mold 31.

[0060] The positioning assembly 321 includes a bracket, a lifting cylinder mounted on the bracket, an extension plate 3212 arranged on the piston rod of the lifting cylinder, and a material hanging needle 3213 arranged on the outer end of the extension plate 3212. In this embodiment, the material hanging needle 3212 is vertically arranged upward, and the upper end of the material hanging needle 3213 is a spherical end with a relatively larger diameter. Eight hanging needle holes are reserved at the corresponding positions of the epidermis. The lifting cylinders of the eight positioning assemblies 321 are respectively recorded as 5-1 to 5-8.

[0061] The first to fourth edge wrapping mechanisms are used to wrap the four edge portions of the frame 9 respectively, and the corner wrapping mechanism is used to wrap the four corner portions of the frame 9 .

[0062] Figure 5 It is a three-dimensional diagram of the edge wrapping mechanism and the corner wrapping mechanism in this embodiment.

[0063] like Figure 5As shown, the first to fourth edge wrapping mechanisms and the corner wrapping mechanisms are arranged circumferentially along the supporting mold 31. When the upper mold 20 is pressed down with the skeleton 9, the first to fourth edge wrapping mechanisms are respectively located beside the above-mentioned first to fourth edge portions of the skeleton 9.

[0064] The first edge-binding mechanism 33 is used to edge the first edge portion 91, and includes three surface clamping components 331 and an edge pressing component 332. The three surface clamping components 331 are arranged in sequence along a straight line, corresponding to the first to third portions to be edged of the first edge portion 91, and a gap is left between two adjacent surface clamping components 331.

[0065] Figure 6 is a stereoscopic view of the epidermis clamping assembly in this embodiment.

[0066] like Figure 6 As shown, the epidermis clamping assembly 331 is used to clamp the edge of the epidermis, and can pull up and push inward the clamped epidermis edge, thereby cooperating with the edge pressing assembly 332 to achieve the edging of the first edge 91 and the second edge 92 with complex structures.

[0067] Each epidermis clamping assembly 331 includes a translation assembly 3311 (guide rails and sliders, etc.), a bracket 3312 arranged on the translation assembly and movable relative to the supporting film tire 31 along its width direction, a transmission assembly 3313 (gears and racks, etc.) for driving the bracket to translate, a forward motor 31-1 for driving the transmission assembly, a lifting cylinder 1-1 arranged on the bracket, a clamping cylinder 2-1 installed on the piston rod of the lifting cylinder through corresponding connecting parts, and a clamp 3314 connected to the piston rod of the clamping cylinder at one end. Among them, the forward motor 31-1 is a servo motor. Driven by the forward motor, the clamp can move horizontally toward the mold tire; driven by the lifting cylinder, the clamp can move up and down in the vertical direction; driven by the clamping cylinder, the clamp can be opened or clamped.

[0068] Figure 7 2 is a three-dimensional diagram of the clip in this embodiment.

[0069] like Figure 7 As shown, the clamp 3314 is composed of an upper clamping plate 33141 and a lower clamping plate 33142 that match each other, wherein the rear end of the lower clamping plate is fixed on the bracket, and the rear end of the upper clamping plate is connected to the end of the piston rod of the clamping cylinder through a Z-shaped connecting plate.

[0070] Seen from the side, the upper and lower clamping plates are both roughly hook-shaped, and the openings of the hooks are both facing downward. The front end (outer end) of the upper clamping plate 33141 is long and has a plurality of short strip-shaped notches distributed thereon, forming a rake shape. The front end of the lower clamping plate 33142 is also long and has a barb 33142a with an opening facing upward that matches the upper clamping plate. When the clamp is clamped, the front ends of the upper and lower clamping plates fit together, thereby clamping the edge of the epidermis. The edge of the epidermis is bent along the shape of the barb of the front end of the upper clamping plate and the lower clamping plate, and the rake-shaped front end of the upper clamping plate can increase friction, thereby clamping the edge of the epidermis.

[0071] The three skin clamping assemblies 331 in the first hemming mechanism 33 are basically the same in structure, except that the outer end shapes of the three clips 3314 are different, and the outer ends of the three clips are arranged in sequence and roughly connected to form an arc that matches the first edge portion 91. In this embodiment, the forward motors in the other two skin clamping assemblies 331 are respectively recorded as 31-2 and 31-3, the lifting cylinders are respectively recorded as 1-2 and 1-3, and the clamping cylinders are respectively recorded as 2-2 and 2-3, so as to facilitate the description of the corresponding method steps later.

[0072] The edge clamping assembly 332 includes two oblique thrust cylinders 6-1, 6-2 and a contoured clamping block 3321. The two oblique thrust cylinders 6-1, 6-2 are interspersed in the gap between two adjacent epidermis clamping assemblies 331 and are tilted, with their piston rods tilted approximately toward the upper end of the supporting mold 31. The contoured clamping block 3321 is in the shape of an elongated block and is fixed on the piston rod ends of the two oblique thrust cylinders at the same time. It moves upward tilted under the drive of the oblique thrust cylinders and has a contoured clamping surface (concave surface) that matches the outer surface of the first edge 91. When the cylinder is in the original position (i.e., when the piston rod of the cylinder is retracted), the contoured clamping block 3321 is located below the outer ends of the three clips 3314.

[0073] Since a large number of action mechanisms need to be arranged around the supporting mold 31 and the surrounding space is limited, in this embodiment, the four positioning components 321 located at the edge are respectively arranged above each oblique thrust cylinder, and the extension plate 3212 extends from the gap between the clamp and the contoured clamping block to below the front end of the clamp. The hanging needle is roughly located at the front end of the lower clamping plate, and a makeshift groove is also provided on the lower clamping plate to make way for the hanging needle.

[0074] The second edge wrapping mechanism 34 also includes three surface clamping components 341 and an edge pressing component 342, which are used to wrap the second edge 92 of the skeleton 9. Its structure and relative position are basically the same as the surface clamping component 331 and the edge pressing component 332 of the first edge wrapping mechanism 33. The only difference is that the outer ends of the three clamps 3414 of the second edge wrapping mechanism 34 are arranged in sequence and roughly connected to form an arc matching the second edge 92, and the three surface clamping components 331 correspond to the fourth to sixth parts to be wrapped of the second edge 92 respectively; the contoured pressing block 3421 of the edge pressing component 342 has a contoured pressing surface matching the outer surface of the second edge 92. In this embodiment, the forward motors in the three skin clamping assemblies 341 in the second hemming mechanism 34 are respectively denoted as 32-1, 32-3, and 32-3, the lifting cylinders are respectively denoted as 3-1, 3-2, and 3-3, and the clamping cylinders are respectively denoted as 4-1, 4-2, and 4-3. The two oblique thrust cylinders of the edge pressing assembly 342 are respectively denoted as 6-3 and 6-4.

[0075] The structures of the third and fourth hemming mechanisms are prior art, and thus are only briefly described below.

[0076] The third edge wrapping mechanism 35 is used to wrap the third edge 93 of the skeleton 9, and includes a forward push cylinder 7, a linkage plate 351 connected to the piston rod of the forward push cylinder 7, a forward push cylinder 10-1 installed on one end of the linkage plate 351, a lifting cylinder 11-1 connected to the piston rod of the forward push cylinder 10-1, and a corner edge wrapping block 352 with a U-shaped groove connected to the piston rod of the lifting cylinder 11-1; a lifting cylinder 8-3 arranged on the corresponding bracket, and a corner edge wrapping block 352 arranged on the lifting cylinder 8-3; a forward push cylinder 10-1 installed on the other end of the linkage plate 351. The push cylinder 10-2, the lifting cylinder 11-2 connected to the piston rod of the front thrust cylinder 10-2, and the corner edging block 352 with a contoured pressing surface arranged on the lifting cylinder 11-2; the lifting cylinder 8-4 installed on the other end of the linkage plate 351, and the edging matching block 355 arranged on the lifting cylinder 8-4 and in a hook shape and matching with the corner edging block 352; the front thrust cylinders 9-3 and 9-4 arranged on the corresponding brackets, and the edge pressing blocks 356 with contoured pressing surfaces respectively arranged on the ends of the piston rods of the front thrust cylinders 9-3 and 9-4.

[0077] The fourth edging mechanism 36 is used to edge the fourth edge 94 of the skeleton 9, which includes lifting cylinders 8-1 and 8-2 respectively arranged on corresponding brackets, forward thrust cylinders 9-1 and 9-2 respectively arranged on the ends of the piston rods of the lifting cylinders 8-1 and 8-2, and corner edging blocks 361 and 362 respectively arranged on the ends of the piston rods of the forward thrust cylinders 9-1 and 9-2; a lifting cylinder 11-3 arranged on the corresponding bracket, a forward thrust cylinder 10-3 connected to the piston rod of the lifting cylinder 11-3 through a corresponding connecting plate, and an edge clamping block 363 with a contoured clamping surface arranged on the end of the piston rod of the forward thrust cylinder 10-3.

[0078] Therefore, the third and fourth hemming mechanisms can push the edge of the skin onto the third side 93 and the fourth side 94 through the contour blocks, and press the skin at both ends of the two sides through the corner hemming blocks.

[0079] The lower mold cooling mechanism includes a flow channel arranged in the supporting mold 31 and a water channel interface arranged on the outside of one side thereof, which is used to circulate cooling liquid to cool the interior decoration parts after the lamination and hemming.

[0080] The heating mechanism 40 includes a lamp tube rack 41, a plurality of infrared lamp tubes 42, a heating plug cylinder 43, a heating transplanting motor 44 and a corresponding transmission structure.

[0081] The lamp frame 41 is composed of a plurality of plates, and is in a U-shaped plate shape matching the frame 9. A plurality of infrared lamps 42 are fixed to the lamp frame 41, and are arranged in sequence along the bending direction of the lamp frame 41. In this embodiment, a total of seven infrared lamps 42 are provided. In addition, the lamp frame 41 is provided with corresponding pin holes.

[0082] The piston rod of the heating plug cylinder 43 extends when the lamp tube holder 41 moves to a designated position, thereby fixing the lamp tube holder 41 at the position.

[0083] The heating and transplanting motor 44 is used to drive the corresponding transmission structure to drive the lamp holder 41 to move to the support mold 31 of the lower mold 30, and the lower part of the lamp holder 41 is placed in the concave part on the upper surface of the support mold 31, so as to heat the skin coated with glue on the support film 31. After the heating is completed, the heating and transplanting motor 44 drives the lamp holder 41 to move out of the lower mold 30 (for resetting).

[0084] In an alternative solution, two sets of lower molds 30 may be arranged in the equipment frame 10, and the two sets of lower molds 30 share the heating mechanism 40. Preferably, the two sets of lower molds 30 are arranged in a mirror image. When one of the lower molds 30 cooperates with the upper mold 20 to cover the edge, the skin can be placed in the other lower mold 30 to improve production efficiency.

[0085] Figure 8It is a logic block diagram of the control module in this embodiment.

[0086] like Figure 8 As shown, the device 100 also includes a plurality of sensors and a control module 50 for controlling the process of laminating and hemming.

[0087] The sensor includes at least a skeleton detection sensor disposed in the upper mold 20 and a skin detection sensor disposed in the lower mold, which are used to detect whether the skeleton and skin are placed in the upper and lower molds, respectively. Optionally, a detection sensor for detecting whether each cylinder or the main cylinder is in place (i.e., the piston rod is extended) can also be provided.

[0088] The control module 50 includes a workpiece detection unit 51, a workpiece fixing control unit 52, a heating control unit 53, an edge preparation control unit 54, an edge control unit 55, a reset control unit 56, a cooling control unit 57, and a general control unit 58. Optionally, a start-stop control unit may also be included.

[0089] The workpiece detection unit 51 detects whether a skeleton and a skin are placed on the upper mold 20 and the lower mold 30 respectively through a skeleton detection sensor and a skin detection sensor.

[0090] The start-stop control unit starts the laminating and hemming process when the workpiece detection unit 51 detects the skeleton and the skin. In an alternative solution, the start-stop control unit may include a start-stop control button, which is manually operated to control the start and stop of the process.

[0091] The workpiece fixing control unit 52 is used to control the corresponding upper mold or lower mold mechanism to fix the workpiece when the workpiece detection unit 51 detects the corresponding workpiece.

[0092] Specifically, when the skeleton is detected, the multiple clamping cylinders 231 of the upper mold 20 are controlled to rotate the upper mold clamping rod 232 toward the middle of the upper mold 20, and the two side push cylinders 225 are controlled to push the two side pressure blocks 224 toward both sides, thereby clamping the skeleton of the upper mold. When the skin is detected, the six clamping cylinders 2-1 to 2-3, 4-1 to 4-3 of the lower mold 30 are controlled to drive six clamps to clamp the edge of the skin, thereby fixing and tensioning the skin.

[0093] The heating control unit 53 is used to control the heating mechanism 40 to move to the supporting mold 31 carrying the skin to heat the skin coated with glue after the workpiece is fixed, and to control the heating mechanism 40 to reset (i.e. move it away from the lower mold) after the heating is completed (after a predetermined heating time); and to control the auxiliary heating mechanism 24 to perform additional heating on the area of ​​the skeleton to be hemmed before starting the laminating and hemming.

[0094] Specifically, it first controls the heating pin cylinder 43 to be in place so that it no longer fixes the lamp tube holder 41; then controls the heating transplanting motor 44 to drive the lamp tube holder 41 to move to above the lower mold 30, and maintains this position to heat the epidermis for 8 seconds; then controls the heating transplanting motor 44 to drive the lamp tube holder 41 to reset, that is, move out of the lower mold 30 area.

[0095] The edge wrapping preparation control unit 54 is used to control the lifting cylinder 222 to drive the pressing mold 223 to move down to a predetermined pressing position after the heating mechanism 40 is reset, and then control the six forward push motors to drive the corresponding clamps to move forward to a predetermined edge wrapping preparation position, so as to prepare for edge wrapping. After the edge wrapping preparation is completed, most of the middle area of ​​the skin is pressed by the matching upper and lower molds, and the edge of the skin forms a U-shaped bending shape that roughly covers the first side 91 and the second side 92 of the skeleton 9.

[0096] The edge wrapping control unit 55 is used to control the first to fourth edge wrapping mechanisms to respectively fit and wrap the corresponding skin edges onto the corresponding edges of the frame after the edge wrapping preparation is completed, thereby achieving the laminating and edge wrapping to form the B-pillar interior trim.

[0097] Specifically, for the third side 93 and the fourth side 94, the third edge wrapping mechanism 35 and the fourth edge wrapping mechanism 36 are controlled to wrap the edge of the skin onto the side by using the profiling block pushing method. For the first side 91 and the second side 92, the first edge wrapping mechanism 33 and the second edge wrapping mechanism 34 are controlled to wrap the edge of the skin onto the side by clamping the edge of the skin and pulling it upward, and by using the servo motor to realize the follow-up push of the edge of the skin toward the skeleton, that is, while the edges of both sides of the skin are pulled upward with a predetermined force by multiple clips 3314 and 3414, the clips are driven to push toward the skeleton in a follow-up manner by multiple servo motors, thereby realizing the overlapping and wrapping of the two sides of the complex structure, so that the skin tightly and fits the two sides.

[0098] A more specific hemming control process will be shown in the following method steps.

[0099] The reset control unit 56 is used to control the first to fourth hemming mechanisms of the lower mold and the upper mold to reset respectively after the hemming is completed, so as to perform the next round of laminating and hemming processing.

[0100] The cooling control unit 57 is used to control the valve set at the water channel interface of the upper and lower molds to open after the edging is completed, so that the coolant flows into the upper and lower molds, thereby cooling the B-pillar interior parts that have been wrapped and edging is completed, and control the valve to close after cooling is completed (after a predetermined period of time).

[0101] The general control unit 58 is used to control the operation of the above-mentioned functional units.

[0102] Fig. 9 It is a flow chart of the method for laminating and hemming the automobile B-pillar interior trim in this embodiment.

[0103] like Fig. 9 As shown, based on the above device 100, the corresponding laminating and hemming method includes the following steps:

[0104] Step S1 , manually put the skeleton on the upper die 20 , the workpiece detection unit 51 detects the presence of the skeleton at the upper die 20 through the corresponding sensor, and the workpiece fixing control unit 53 controls the clamping mechanism 23 to clamp the skeleton.

[0105] In step S2, the glue-coated epidermis is temporarily fixed on the supporting membrane 31 and tensioned manually using multiple hanging needles of the lower mold 30. The workpiece detection unit 51 detects the presence of epidermis at the lower mold through the corresponding sensor. The workpiece fixing control unit 53 controls multiple epidermis clamping components 331 and 341 to clamp the edge of the epidermis, and then controls multiple positioning components 321 to move the hanging needles downward to separate the hanging needles from the epidermis.

[0106] Among them, the skin has the glue side facing upward, and the lower surface of the skin is roughly attached to the upper surface of the supporting film tire 31. The skin can be pre-tensioned and pre-positioned by the hanging needle. In an alternative solution, the hanging needle can also be withdrawn after the skin is heated.

[0107] In step S3 , the heating control unit 53 controls the heating mechanism 40 to move to above the lower mold 30 to heat the surface, and controls the heating mechanism 40 to reset after the heating is completed.

[0108] In step S4, the edging preparation control unit 54 controls the upper mold 20 to move the clamping mold 223 downward to a predetermined clamping position, thereby cooperating with the supporting mold 31 to clamp the skeleton and the middle part of the epidermis, and controls multiple forward push motors to drive multiple clamps to move forward toward the mold to a predetermined preparation position, so that the epidermis forms a curved shape that roughly covers the first side and the second side of the skeleton.

[0109] In step S5 , the edge wrapping control unit 55 controls the first to fourth edge wrapping mechanisms to wrap the skin edge around the first to fourth side portions of the frame and keep doing so for a predetermined period of time, thereby forming a B-pillar interior trim.

[0110] As described above, the first hemming mechanism 33 and the second hemming mechanism 34 are respectively controlled to wrap the skin edge onto the first side portion and the second side portion by clamping the skin edge and pulling it upward while implementing the follow-up horizontal push of the skin edge through the servo motor. After completing the hemming action, each mechanism maintains the position (i.e., maintains pressure) for 19 seconds.

[0111] Step S6, the cooling control unit 57 controls the valves provided at the water channel interfaces of the upper mold and the lower mold to open respectively, so that the cooling water flows through the pressing mold 223 and the supporting mold 31 to cool the processed B-pillar interior parts.

[0112] Step S7, the reset control unit 56 controls the mechanisms in the upper mold and the lower mold to reset respectively, and then the processed B-pillar interior trim can be taken out.

[0113] Fig.10 is a flow chart of step S5 in this embodiment.

[0114] like Fig.10 As shown, illustratively, the following control flow may be adopted in step S5:

[0115] Step S5-1, the edge wrapping control unit 55 controls the forward push cylinder 6-n (that is, all the forward push cylinders marked with 6-, including 6-1 to 6-4, the same below) to drive the two contour pressing blocks 3321 and 3421 to push forward obliquely upward to press the edge of the skin at the first edge 91 and the second edge 92.

[0116] Step S5-2: the heating control unit 53 controls the auxiliary heating mechanism 24 of the upper mold to perform additional heating on the area of ​​the frame to be hemmed.

[0117] In step S5-3, the edge wrapping control unit 55 controls the lifting cylinders 1-n and 3-n to drive the clamps to rise, tightening the edges of both sides of the skin upwards, and at the same time controls the forward push motors 31-n and 32-n to drive the clamps 3314 and 3414 to push the edges of the skin forward toward the skeleton to the predetermined edge wrapping position.

[0118] Step S5-4, the edge control unit 55 controls the forward push cylinder 7 to move forward to the position, driving the multiple edge blocks to move to the corresponding skin edge. The edge blocks include the above-mentioned corner edge blocks, edge matching blocks, and side edge blocks.

[0119] Step S5-5, controlling the lifting cylinder 8-n to drive the multiple edge-wrapping blocks to move up to the position, so as to attach the edge of the skin to the third side portion 93 and the fourth side portion 94.

[0120] Step S5-6, controlling the forward push cylinder 9-n to drive the corresponding edge wrapping block to move forward to a position, thereby wrapping the edge of the skin onto the third side portion 93 and the fourth side portion 94.

[0121] Step S5-7, control the forward push cylinder 10-n to drive the corresponding edge wrapping block to move forward to the position, so as to press the edges of the skin wrapped at both ends of the third side portion 93 and the fourth side portion 94.

[0122] Step S5 - 8 , controlling the lifting cylinder 11 - n to drive the corresponding edge-wrapping block to move up to the position, thereby completing the overlapping edge-wrapping of the third side portion 93 and the fourth side portion 94 .

[0123] Step S5-9, waiting for a predetermined time, that is, maintaining the state of the above-mentioned multiple lifting cylinders, forward pushing cylinders, and forward pushing motors in place for a predetermined time.

[0124] Through the above steps, the laminating and hemming of the frame 9 can be automatically completed, including the automatic hemming of two sides with complex structures. The above steps are only exemplary process steps. For example, for the hemming of the third and fourth sides, other hemming processes in the prior art can be used; auxiliary heating and cooling can also be omitted in the steps, etc.

[0125] Functions and Effects of the Embodiments

[0126] The automobile B-pillar interior trim laminating and hemming equipment provided in this embodiment includes an upper mold for carrying a skeleton, a lower mold for carrying a skin, and a control module, wherein the lower mold has a first hemming mechanism and a second hemming mechanism, both of which have a clamp for clamping the edge of the skin, a lifting driver for driving the clamp to lift and lower, and a forward push driver for driving the clamp to push forward toward the skeleton, so that under the control of the control module, multiple clamps can clamp the edge of the skin, pull it up, and then push it inward toward the skeleton, thereby automatically realizing the process of laminating and hemming. In particular, since the forward push driver is a servo motor, a follow-up forward push drive can be realized under the control of the control template, so that the clamp can pull the edge of the skin upward while pushing forward toward the skeleton in a follow-up manner, so that the equipment can adapt to the complex shapes of the first and second sides of the skeleton, achieve an ideal fitting hemming effect, avoid damaging the skin with relatively less elasticity during the hemming process, and improve the production and processing efficiency and yield rate of automobile B-pillar interior trims.

[0127] In the embodiment, the lower mold also includes a skin pre-positioning mechanism, which includes a plurality of positioning components arranged along the circumference of the mold, each positioning component has a lifting material hanging needle, so that the skin can be tensioned and pre-positioned by the plurality of hanging material hanging needles, so that the relative positions between the skin and the frame, and between the skin and the mold are more accurate, and the precision of the finished interior decoration parts is higher. In addition, using a plurality of hanging material hanging needles to temporarily fix the skin first is also conducive to clamping the skin edge with a clip, which can avoid problems such as uneven skin edge and even adhesion when the skin edge is clamped manually with a clip.

[0128] Furthermore, the first and second edge wrapping mechanisms also have edge pressing assemblies, which have long strip-shaped contoured pressing blocks. Therefore, under the control of the control module, the two contoured pressing blocks can first be used to press the skin against the corresponding edges, so that the skin can better fit the two concave parts of the frame with more complex structures. And after the long strip-shaped contoured pressing blocks press a part of the skin, it is also easier for the clip to pull the skin upwards.

[0129] Furthermore, the edge clamping assembly has multiple oblique push cylinders, which can stably push the long contoured clamping block to achieve a better pressing effect. The oblique push cylinders are arranged in the gap between the two surface clamping assemblies, and some positioning assemblies are arranged on the oblique push cylinders, so that the limited space around the supporting mold of the lower mold can be fully utilized, and a large number of movable mechanisms can be arranged to realize complex edge wrapping operations.

[0130] Furthermore, the upper mold is also provided with a detection sensor, a side pressure mechanism and a clamping mechanism, and the lower mold is also provided with a detection sensor. Therefore, under the control of the control module, when it is detected that a skeleton is placed on the upper mold, the side pressure block can be automatically pushed sideways and the clamping mechanism can be clamped, so as to automatically fix the skeleton so that it will not have position displacement or shaking during the laminating and hemming process. When it is detected that a skin is placed on the lower mold, the edge of the skin can be automatically clamped with a clamp and the hanging needle can be separated from the skin, thereby improving the accuracy of laminating and hemming and the quality of finished products, and also reducing the burden on workers.

[0131] Furthermore, a removable heating mechanism is provided, and it has a concave structure matching the lower mold, so that the skin surface can be heated efficiently, the heating effect is more uniform, and it can be removed as a whole after heating, without affecting the upper mold pressing and subsequent hemming operations. In addition, the upper mold also has infrared lamps arranged along the circumference of the upper mold, which can supplement the heating of the edge of the frame to be hemmed, so that the edge of the skin and the edge of the frame are better combined.

[0132] Furthermore, the upper and lower molds are also provided with corresponding cooling mechanisms, which can be connected to and circulate cooling liquid, so that the interior parts can be automatically cooled after the lamination and hemming are completed under the control of the control module, so that the interior parts can be cured as soon as possible after the lamination and hemming are completed, avoiding the problem of the interior parts being easily damaged due to their high temperature when further transferred. In addition, no additional manual cooling operation is required, which can save corresponding manpower and time.

[0133] The above embodiments are only used to illustrate the specific implementation of the present invention, and the present invention is not limited to the description scope of the above embodiments. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and descriptions are only to illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A laminating and hemming device for automobile B-pillar interior parts, used for laminating a skin coated with glue on a frame and hemming to make a B-pillar interior part, wherein the frame has a first side portion and a second side portion with a gradually changing cross-sectional shape, characterized in that: include: An upper mold, used for carrying the skeleton; A lower mold is used to carry the skin and cooperate with the upper mold to perform lamination and hemming; as well as The control module is used to control the laminating and hemming process. The lower mold has a first edge wrapping mechanism and a second edge wrapping mechanism, which are used to wrap the first edge and the second edge, respectively, and each of them includes a plurality of surface clamping components. Each of the skin clamping assemblies comprises: A clamp, used for clamping the edge of the epidermis; A lifting driver, used for driving the clamp to lift; and The forward push driver is a servo motor, used to drive the clamp to push forward toward the frame. The control module at least includes: A hemming preparation control unit, used for controlling the upper mold to press downward toward the lower mold, so that the skin is covered on the frame to complete the hemming preparation; and The edge wrapping control unit is used to control each of the lifting drives to drive the corresponding clamps to move upward to tighten the skin edge after the edge wrapping preparation is completed, and at the same time control each of the forward pushing drives to drive the clamps forward toward the skeleton in a follow-up manner, thereby completing the overlapping edge wrapping of the first edge portion and the second edge portion.

2. The automotive B-pillar interior trim laminating and hemming equipment according to claim 1, Features: in, The upper mold has a pressing mold for carrying the frame, which has a contoured surface matching the inner side surface of the frame. The lower mold also has a supporting mold for carrying the skin, and the first edge binding mechanism and the second edge binding mechanism are respectively arranged on both sides of the supporting mold in the width direction. The first edge binding mechanism and the second edge binding mechanism also respectively have an edge pressing assembly, which includes: A contoured pressing block is in the shape of an elongated strip and has a contoured pressing surface facing the supporting mold and matching the outer surface of the first edge portion or the second edge portion; as well as One or more oblique thrust drives, used to drive the contoured pressing block to move obliquely upwards, After completing the edge wrapping preparation, the edge wrapping control unit first controls the oblique push driver to drive the corresponding contoured pressing block to press toward the first edge portion or the second edge portion, and then controls the lifting driver and the forward push driver to perform overlapping edge wrapping.

3. The automotive B-pillar interior trim laminating and hemming equipment according to claim 2, characterized in that: in, The plurality of skin clamping components of the first edge binding mechanism and the second edge binding mechanism are arranged in sequence, and there is a gap between two adjacent skin clamping components. The edge pressing assembly includes a plurality of the oblique thrust drivers, which are respectively arranged at the gaps, and the contoured pressing blocks are respectively connected to the plurality of the oblique thrust drivers. The front ends of the plurality of clips of the first edge binding mechanism and the second edge binding mechanism are arranged in sequence and connected to form an arc shape matching the first edge portion or the second edge portion.

4. The automotive B-pillar interior trim laminating and hemming equipment according to claim 2, Features: in, The lower mold also includes a skin pre-positioning mechanism for tensioning and pre-positioning the skin, which includes a plurality of positioning components. Each of the positioning components comprises: A hanging needle, used to pass through the needle hole reserved on the epidermis; as well as The lifting cylinder is used to drive the hanging needle to move up and down. The epidermis clamping assembly also includes a clamping cylinder for driving the clamp to clamp or open. The control module also includes a workpiece fixing control unit, which is used to control the multiple clamping cylinders to drive the corresponding clamps to clamp the edge of the skin tightened by the multiple hanging needles, and then control the multiple lifting cylinders to drive the corresponding hanging needles to move downward, so that the hanging needles are separated from the skin.

5. The automotive B-pillar interior trim laminating and hemming equipment according to claim 4, characterized in that: in, A plurality of positioning components are arranged along the circumference of the supporting mold and are respectively arranged beside positions corresponding to the four corners of the frame, the first side and the second side. The positioning assembly also includes an extension plate, one end of which is arranged on the output end of the lifting cylinder, and the other end is provided with the hanging needle, and the hanging needle is arranged vertically upward.

6. The automotive B-pillar interior trim laminating and hemming equipment according to claim 5, characterized in that: in, The upper mold is provided with a skeleton detection sensor. The lower mold is provided with a skin detection sensor. The control module further includes a workpiece detection unit, which is used to detect whether the upper mold is provided with the skeleton through the skeleton detection sensor, and detect whether the lower mold is provided with the skin through the skin detection sensor. When the workpiece detection unit detects that the lower mold is provided with the skin, the workpiece fixing control unit controls the plurality of clamping cylinders to drive the corresponding clamps to clamp the edge of the skin, and then controls the plurality of lifting cylinders to drive the corresponding hanging needles to move downward.

7. The automotive B-pillar interior trim laminating and hemming equipment according to claim 6, characterized in that: in, The upper die also has: A clamping mechanism, comprising a plurality of upper mold clamping cylinders arranged along the circumference of the pressing mold, and a clamping rod driven by each of the upper mold clamping cylinders; and The side pressure mechanism comprises a plurality of side pressure blocks arranged above the pressing mold and a plurality of side push cylinders for driving the side pressure blocks to be pushed obliquely downward, wherein the side pressure blocks have a contoured surface matching the inner side surface of the frame. When the workpiece detection unit detects that the upper mold is provided with the skeleton, the workpiece fixing control unit controls the multiple upper mold clamping cylinders to drive the corresponding clamping rods to rotate, and controls the multiple side push cylinders to drive the corresponding side pressure blocks to be pushed obliquely downward, thereby clamping the skeleton.

8. The automotive B-pillar interior trim laminating and hemming equipment according to claim 2, characterized in that: Also includes: a heating mechanism for heating the skin to activate the glue; as well as The auxiliary heating mechanism is arranged in the upper mold and is used to supplementally heat the area of ​​the frame to be hemmed. The upper surface of the supporting mold is a concave surface matching the outer surface of the frame. The heating mechanism comprises: The lamp tube holder is in the shape of a bent plate matching the concave surface; A plurality of heating lamp tubes are fixed on the lamp tube rack; and A heating transplanting motor is used to drive the lamp tube rack to move. The auxiliary heating mechanism includes a plurality of heating lamps arranged in a ring shape above the pressing mold. The control module also includes a heating control unit, which is used to control the heating transplanting motor to drive the lamp tube rack to move to the concave surface to heat the surface before preparing for edge wrapping, and control the heating transplanting motor to drive the lamp tube rack to move to the outside of the lower mold after heating is completed; and is used to control the auxiliary heating mechanism to supplement the heating of the area to be edged of the skeleton before or during the edge wrapping.

9. The automotive B-pillar interior trim laminating and hemming equipment according to claim 2, characterized in that: in, The upper mold also has an upper mold cooling mechanism, including a flow channel arranged in the compression mold and a water channel interface arranged outside one side of the compression mold for circulating cooling liquid. The lower mold also has a lower mold cooling mechanism, including a flow channel arranged in the supporting mold and a water channel interface arranged outside one side of the supporting mold, which is used to circulate cooling liquid to cool the B-pillar interior trim that has been completed with lamination and hemming.

10. A method for laminating and edging an automobile B-pillar interior part, for laminating a skin coated with glue on a frame and edging the frame to make a B-pillar interior part, wherein the frame has a first side portion and a second side portion with a gradually changing cross-sectional shape, characterized in that: Using the automotive B-pillar interior trim laminating and hemming equipment according to any one of claims 1 to 9, the method comprises at least the following steps: a hemming preparation step of pressing the upper mold carrying the frame toward the lower mold carrying the skin so that the skin covers the frame; and In the edging step, each of the lifting drivers drives the corresponding clamps for clamping the edge of the skin to move upward to tighten the edge of the skin, and at the same time, each of the forward pushing drivers drives the clamps forward toward the skeleton in a follow-up manner, thereby completing the overlapping and edging of the first edge portion and the second edge portion.

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