Automobile C column rear interior trim part covering equipment and method

Abstract

The invention provides an automobile C column rear interior trim part skin covering device and method, and the device comprises an upper die and a lower die which are respectively used for carrying a skeleton and a skin and are used for mutually matching to cover the skin. Wherein the lower die comprises a lower die tire, a plurality of skin pre-positioning mechanisms and a plurality of skin dragging mechanisms, the skin pre-positioning mechanisms and the skin dragging mechanisms are distributed on the periphery of the lower die tire, the skin does not make contact with the lower die tire firstly through the skin pre-positioning mechanisms, and the skin is pre-tensioned above the lower die tire firstly; then, a plurality of point positions on the edge of the skin can be clamped through a plurality of skin dragging mechanisms, dragging of the corresponding preset dragging distance can be carried out on the point positions, particularly, dragging of the corresponding larger distance can be carried out at the position corresponding to the curved surface portion of the framework, and therefore pre-coating can be carried out before the skin is coated with the framework; and the skin forms a coating form corresponding to the outer surface of the skeleton, so that the skin and the skeleton can be better attached in the subsequent coating operation.

Description

Technical Field

[0001] The invention belongs to the technical field of automobile interior decoration processing equipment, and specifically relates to an automobile C-pillar rear interior decoration laminating device and method. Background Art

[0002] There are a large number of interior parts in cars, most of which are made of a specific skeleton with a certain concave-convex structure attached to the skin, and the skin edge is wrapped and fixed on the skeleton edge. 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 corresponding lamination requirements are also getting higher and higher.

[0003] In one vehicle model, there are three interior parts for the C-pillar (the pillars on both sides of the rear windshield), one of which is the rear interior part of the C-pillar, whose frame has a complex edge structure, especially a curved surface with a large curvature at one end of the frame, and the surface is made of thermoplastic polyolefin elastomer (TPO) material, which has limited elasticity and is relatively thin, resulting in the difficulty of the surface laminating equipment using the traditional stretching method and the contour block pushing method to automatically laminate the surface onto the rear interior part frame of the C-pillar. Stretching and tightening the surface will cause it to be damaged or even torn, while if it is not stretched, the laminating effect is not ideal. At the edge of the complex structure frame, especially at the curved surface with a large curvature, there will be a variety of quality problems such as poor surface fit and adhesion of the surface parts. Therefore, for such rear interior parts of the C-pillar, the surface lamination is mainly carried out manually, which has low production efficiency, and the operation of manually laminating the surface and making it adhere to the surface of the frame smoothly is very dependent on experience, which also leads to relatively poor consistency of the finished product.

[0004] Therefore, in order to produce the above-mentioned C-pillar rear interior trim more efficiently and to improve the product surface lamination quality and consistency, a new type of surface lamination equipment and a corresponding surface lamination process 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 automatically laminating the C-pillar rear interior trim with complex edge shapes, and a corresponding laminating method using the device. The present invention adopts the following technical solutions:

[0006] The present invention provides a skin laminating device for automobile C-pillar rear interior trim, which is used for laminating a skin coated with glue on a frame to make an automobile C-pillar rear interior trim, wherein one side of the frame has a curved surface, and the device has the following technical features, which include: an upper mold having an upper mold tire for carrying the frame; and a lower mold for placing the skin and cooperating with the upper mold for skin laminating, wherein the lower mold has: a lower mold tire having a lower imitation contour surface facing the upper mold tire, and one side of which has a lower mold curved surface corresponding to the curved surface of the frame; a plurality of skin predetermined The present invention relates to a plurality of skin dragging mechanisms, which are distributed around the lower mold and are used to pre-tension the skin; and a plurality of skin dragging mechanisms, which are distributed around the lower mold and are used to clamp the skin edges at corresponding positions and drag the clamped skin edges for a corresponding predetermined dragging distance, so that the skin presents a covering shape corresponding to the outer surface of the skeleton before lamination, wherein one of the skin dragging mechanisms is arranged next to the lower mold curved surface portion, and the predetermined dragging distance of the skin dragging mechanism is greater than the predetermined dragging distances of the remaining plurality of skin dragging mechanisms.

[0007] The automotive C-pillar rear interior trim surface laminating device provided by the present invention may also have such technical features, wherein the surface dragging mechanism includes: a pair of clamping members having clamping surfaces facing each other, and the clamping surfaces are planes; a clamping drive cylinder, used to drive the pair of clamping members to move relative to each other, thereby clamping or loosening the surface edge; a clamping member connecting plate, on which the clamping member and the clamping driver are both arranged; a dragging drive cylinder, the output end of which is connected to the clamping member connecting plate, used to drive the clamping member connecting plate and the clamping member to move up and down; and a dragging support guide assembly, used to support the clamping member connecting plate and guide the movement of the clamping member connecting plate when the dragging drive cylinder drives the clamping member connecting plate to move.

[0008] The automobile C-pillar rear interior trim surface laminating equipment provided by the present invention may also have such technical features, wherein the lower mold tire also has: a lower mold first side portion, which is located on both sides of the lower mold tire with the lower mold curved surface portion respectively, and has a longitudinal bending portion; and a lower mold second side portion and a lower mold third side portion, which are located on the same side of the lower mold tire with the lower mold curved surface portion and are located on both sides of the lower mold curved surface portion respectively, the lower mold second side portion has a transverse bending portion, one end of the lower mold first side portion is connected to one end of the lower mold second side portion, a plurality of skin dragging mechanisms are arranged in two rows on both sides of the lower mold tire, at least three skin dragging mechanisms are arranged in sequence beside the lower mold first side portion, at least one skin dragging mechanism is arranged beside the lower mold second side portion, and at least one skin dragging mechanism is arranged beside the lower mold third side portion, and the predetermined dragging distance of each skin dragging mechanism corresponds to the height of the edge of the corresponding lower mold tire.

[0009] The automobile C-pillar rear interior trim surface laminating device provided by the present invention may also have such technical features, wherein the multiple surface dragging mechanisms arranged on one side of the first edge portion of the lower mold are sequentially the first surface dragging mechanism to the fourth surface dragging mechanism, wherein the third surface dragging mechanism is located next to the longitudinal bending portion, and the multiple surface dragging mechanisms arranged on the other side of the lower mold tire are sequentially the fifth surface dragging mechanism to the eighth surface dragging mechanism, wherein the seventh surface dragging mechanism is located next to the lower mold curved portion, and the third surface dragging mechanism and the seventh surface dragging mechanism also include: a secondary support guide assembly, including a secondary support plate, and the dragging drive cylinder is arranged on the secondary support plate; and a secondary dragging drive cylinder, connected to the secondary support plate, for driving the secondary support plate and the dragging drive cylinder to move up and down.

[0010] The automotive C-pillar rear interior trim surface laminating device provided by the present invention may also have such a technical feature, wherein there are six surface pre-positioning mechanisms, which are respectively arranged next to the first surface dragging mechanism, the second surface dragging mechanism, the fourth surface dragging mechanism, the fifth surface dragging mechanism, the seventh surface dragging mechanism, and the eighth surface dragging mechanism, and each of the surface pre-positioning mechanisms includes: a hanging needle, which is arranged next to the corresponding clamping part with its needle head facing upward; and a needle withdrawal drive cylinder, which is used to drive the hanging needle to move up and down.

[0011] The automotive C-pillar rear interior trim surface laminating device provided by the present invention may also have such technical features, which also include: a heating mechanism, used to heat the surface to activate the glue, wherein the heating mechanism includes: a mechanism carrier, arranged above the lower mold; a plurality of lamp tube brackets, arranged on the mechanism carrier; a plurality of heating lamp tubes, respectively fixed in the machine carrier through a plurality of the lamp tube brackets, and their distribution corresponds to the surface shape of the skeleton; and a translation mechanism, used to drive the mechanism carrier to translate.

[0012] The automotive C-pillar rear interior trim surface laminating device provided by the present invention may also have such technical features, wherein the inner surface of the skeleton has a plurality of connecting support protrusions, and the upper mold further includes: a skeleton detection sensor, which is arranged at the upper mold tire, for detecting whether the skeleton is placed on the upper mold tire; and a plurality of skeleton locking mechanisms, including a locking cylinder and a locking piece, the upper mold tire is hollow and has a plurality of fixing holes, which are respectively used to allow each of the connecting support protrusions to penetrate, and the locking cylinder is used to drive the locking piece to move in the fixing hole, so that the locking piece cooperates with the fixing hole to lock the connecting support protrusion, and the lower mold further includes: a skin detection sensor, which is arranged at the lower mold tire, for detecting whether the skin is placed above the lower mold tire.

[0013] The skin laminating device for the rear interior trim of the automobile C-pillar provided by the present invention may also have such technical features, which also include: a control module for controlling the skin laminating process, wherein the control module includes: a skeleton detection unit for obtaining a detection signal from the skeleton detection sensor and judging whether the skeleton is placed on the upper mold tire according to the detection signal; a skin detection unit for obtaining a detection signal from the skin detection sensor and judging whether the skin is placed above the lower mold tire according to the detection signal; a skeleton fixing control unit for controlling a plurality of skeleton locking mechanisms to lock the skeleton on the upper mold tire when the skeleton detection unit judges that the skeleton is placed; a heating control unit for controlling the translation mechanism to drive the mechanism carrier to move to above the lower mold tire after the skin detection unit detects that the skin is placed above the lower mold tire. , so as to heat the skin, and control the translation mechanism to drive the mechanism carrier to move to a predetermined waiting position after the heating is completed; a laminating preparation control unit is used to control the multiple clamping drive cylinders to respectively drive the corresponding pair of clamping members to clamp the edge of the skin after the heating control unit completes its control operation, and then control the multiple needle withdrawal drive cylinders to respectively drive the corresponding hanging needles to move downward so that the hanging needles are separated from the skin, and then control the multiple dragging drive cylinders and the secondary dragging drive cylinders to drive the corresponding pair of clamping members to drag the skin edge at the corresponding position by the corresponding predetermined dragging distance; and a skin laminating control unit is used to control the upper mold lifting mechanism to drive the upper mold to press down toward the lower mold after the laminating preparation control unit completes its control operation to laminate the skin and the skeleton.

[0014] The automotive C-pillar rear interior trim surface laminating equipment provided by the present invention may also have such technical features, wherein the upper mold includes an upper mold carrier and two upper mold units mirror-symmetrically arranged in the upper mold carrier, each of the upper mold units includes the upper mold tire, the lower mold includes a lower mold carrier and two lower mold units mirror-symmetrically arranged in the lower mold carrier, each of the lower mold units includes the lower mold tire, a plurality of the surface pre-positioning mechanisms and a plurality of the surface dragging mechanisms.

[0015] The present invention provides a method for laminating the skin of an automobile C-pillar rear interior trim part, which is used for laminating a skin coated with glue on a skeleton through the above-mentioned automobile C-pillar rear interior trim part laminating equipment to form an automobile C-pillar rear interior trim part, wherein one side of the skeleton has a curved surface part, and the method has the following technical features, which include the following steps: placing the skeleton on the upper mold tire; placing the skin above the lower mold tire and pre-tensioning the skin through a plurality of skin pre-positioning mechanisms; clamping the skin edges at corresponding positions through a plurality of skin dragging mechanisms, and dragging the clamped skin edges for corresponding predetermined dragging distances, so that the skin is in a coated form corresponding to the outer surface of the skeleton before lamination; and pressing the upper mold toward the lower mold to laminate the skin on the skeleton.

[0016] Functions and Effects of the Invention

[0017] According to the automobile C-pillar rear interior trim surface laminating device and method provided by the present invention, the device comprises an upper mold and a lower mold, which are respectively used to carry a frame and a surface, and are used to cooperate with each other to laminate the surface. Among them, the lower mold includes a lower mold tire, a plurality of skin pre-positioning mechanisms distributed around the lower mold tire, and a plurality of skin dragging mechanisms. The plurality of skin pre-positioning mechanisms can make the skin not contact with the lower mold tire first, but pre-tension the skin above the lower mold tire first, and then the plurality of skin dragging mechanisms can clamp a plurality of points on the edge of the skin, and drag each point for a corresponding predetermined dragging distance, especially at the position corresponding to the curved surface of the skeleton, it can drag a correspondingly larger distance, so that the skin can be pre-wrapped before being laminated with the skeleton, and the skin forms a coating shape corresponding to the outer surface of the skeleton, so that the skin can be better fitted to the skeleton in the subsequent laminating operation, avoiding problems such as wrinkling of the skin and inward shrinkage of the edges, and avoiding problems such as cracking caused by pulling the skin hard during the laminating process, thereby realizing the automated production of the rear interior trim of the automobile C-pillar and improving the production efficiency and the quality of the finished product. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 3D diagram of a skin laminating device for rear interior trim parts of a C-pillar of an automobile according to 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 is an orthographic projection diagram of the upper die unit in an embodiment of the present invention;

[0021] Figure 4 is a three-dimensional diagram of an upper mold tire in an embodiment of the present invention;

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

[0023] Figure 6 is an orthographic projection diagram of the lower mold unit in an embodiment of the present invention;

[0024] Figure 7 is a three-dimensional diagram of a lower mold unit in an embodiment of the present invention;

[0025] Figure 8 is a three-dimensional diagram of the lower mold unit from another angle in an embodiment of the present invention;

[0026] Fig. 9 is a logic block diagram of a control module in an embodiment of the present invention;

[0027] Fig.10 The present invention is a flowchart of a method for laminating the skin of an automobile C-pillar rear interior trim component in an embodiment of the present invention.

[0028] Reference numerals:

[0029] Automobile C-pillar rear interior trim surface laminating device 100; upper mold 10; upper mold carrier 11; upper mold square frame 111; upper positioning column 112; positioning fitting 113; upper mold unit 10A; upper mold bracket 12; upper mold tire 13; upper imitation contour surface 13A; upper mold first side 131; longitudinal bending part 1311; reinforcing rib embedding groove 1312; upper mold second side 132; transverse bending part 1321; upper mold curved surface 133; upper mold concave part 1 34; fixing hole 135; Z-shaped fixing hole 136; skeleton locking mechanism 14; locking cylinder 141; locking member 142; lower die 20; lower die carrier 21; lower die square frame 211; lower positioning column 212; positioning member 213; lower die unit 20A; lower die tire 22; lower imitation contour surface 22A; lower die first side 221; lower die second side 222; lower die curved surface 223; lower die concave portion 224; lower die third side 225;

[0030] First epidermis dragging mechanism 23a; second epidermis dragging mechanism 23b; third epidermis dragging mechanism 23c; fourth epidermis dragging mechanism 23d; fifth epidermis dragging mechanism 23e; sixth epidermis dragging mechanism 23f; seventh epidermis dragging mechanism 23g; eighth epidermis dragging mechanism 23h; clamping member 231; clamping drive cylinder 232; clamping member connecting plate 233; dragging drive cylinder 234; dragging support guide assembly 235; secondary dragging drive cylinder 236; secondary support guide assembly 237; heightening support plate 238; epidermis pre-positioning mechanism 24; needle withdrawal drive cylinder 241; hanging needle 242; heating Mechanism 30; mechanism carrier frame 31; mechanism square frame 311; heating unit 30A; lamp tube bracket 33; heating lamp tube 34; translation mechanism 32; translation drive motor 321; drive rod 322; bearing 323; gear 324; rack 325; guide assembly 326; control module 90; skeleton detection unit 91; epidermis detection unit 92; skeleton fixing control unit 93; heating control unit 94; lamination preparation control unit 95; epidermis clamping control part 951; needle withdrawal control part 952; pre-lamination control part 953; epidermis lamination control unit 96; reset control unit 97; general control unit 98; epidermis 7. DETAILED DESCRIPTION

[0031] 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 C-pillar rear interior trim surface laminating device of the present invention in conjunction with embodiments and drawings.

[0032] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0033] <Example>

[0034] This embodiment provides a skin laminating device for automobile C-pillar rear interior parts, which is used to laminate the skin onto the corresponding frame to form the automobile C-pillar rear interior parts. Since the edges of the C-pillar rear interior parts are respectively combined with other adjacent interior parts (such as the upper and lower C-pillar interior parts), there is no need for hemming, and only the skin needs to be adhered. However, as mentioned above, the edge structure of the frame is complex, and the skin is thin and has limited elasticity, so the lamination is difficult.

[0035] The upper and lower molds in the equipment have contoured surfaces that match the frame, so the corresponding frame structure and the difficulties it brings during the laminating process will be described in detail below in conjunction with the upper and lower mold structures.

[0036] Figure 1 It is a three-dimensional diagram of the surface laminating device for the rear interior trim of the automobile C-pillar in this embodiment.

[0037] like Figure 1 As shown, the skin laminating device 100 for the rear interior trim of the automobile C-pillar includes an upper mold 10, a lower mold 20, a heating mechanism 30, and an upper mold lifting mechanism (not shown in the figure). The upper mold 10 is used to fix the frame, the lower mold 20 is used to fix the skin coated with glue, the heating mechanism 30 is used to heat the skin coated with glue to activate the glue, and also to heat the frame to a certain extent for better lamination, and then the upper mold lifting mechanism drives the upper mold 10 to move downward, so that the upper mold 10 and the lower mold 20 cooperate with each other to laminate the skin.

[0038] Figure 2 : is a three-dimensional diagram of the upper mold in this embodiment, Figure 3 It is an orthographic projection of the upper mold unit in this embodiment.

[0039] like Figure 2 and Figure 3 As shown, the upper die 10 includes an upper die carrier 11 and two upper die units 10A disposed in the upper die carrier 11 .

[0040] The upper die carrier 11 includes two upper die square frames 111 with openings facing downward and five upper positioning columns 112. A cylindrical positioning fitting 113 is provided at the lower end of each upper positioning column 112. The positioning fitting 113 has a positioning fitting groove with an opening facing downward, which is a cylindrical groove. Four positioning columns 112 are respectively located at the four corners of the upper die carrier 11, and another positioning column 112 is located between the two upper die square frames 111 and in the middle of the upper die carrier 11.

[0041] The two upper mold units 10A are respectively arranged on two upper mold square frames 111 and are arranged in a mirror-symmetrical manner. Each upper mold unit 10A includes a plurality of upper mold brackets 12, an upper mold tire 13, and a plurality of skeleton locking mechanisms 14. The upper mold bracket 12 is a bracket that is roughly I-shaped and is vertically arranged, with one end fixed to the inner top surface of the upper mold carrier 11 and the other end fixed to the top surface of the upper mold tire 13. In this embodiment, the top surface of the upper mold tire 13 is roughly a plane.

[0042] Figure 4 It is a three-dimensional view of the upper mold tire in this embodiment.

[0043] like Figure 4 As shown, the upper mold 13 is in the shape of a special block, and its surface facing the lower mold 20 (i.e. Figure 1and Figure 2 The downward surface in the middle is the upper profiling surface 13A, which matches the inner surface structure of the interior trim frame behind the C-pillar of the automobile. It can be seen that the profiling surface structure is relatively complex.

[0044] Specifically, the upper mold tire 13 has an upper mold first side portion 131, an upper mold second side portion 132, an upper mold curved surface portion 133, and an upper mold concave portion 134. The upper mold first side portion 131 and the upper mold second side portion 132 are respectively located on both sides of the width direction of the upper mold tire 13, and one end of the two sides are connected and the other ends are far away from each other. The upper mold curved surface portion 133 is formed at one end where the upper mold first side portion 131 and the upper mold second side portion 132 are far away from each other, and the upper mold concave portion 134 is formed between the upper mold first side portion 131 and the upper mold second side portion 132.

[0045] The cross section of the first side portion 131 of the upper mold along its extension direction is in the shape of two steps facing outward, and the width of each part is different. A longitudinal curved portion 1311 is formed near each end of the first side portion 131 of the upper mold, and the middle section of the first side portion 131 of the upper mold is relatively straight and inclined relative to the length direction of the upper mold tire 13 (inclined in the longitudinal direction). In addition, a plurality of plate-shaped reinforcing ribs are provided on the corresponding side of the inner surface of the frame, and a plurality of reinforcing rib embedding grooves 1312 matching the reinforcing ribs are provided on the first side portion 131 of the upper mold.

[0046] The second side portion 132 of the upper mold is roughly in the shape of an obtuse L, with a lateral bend 1321 formed in the middle. The cross-section along its extension direction is in the shape of a step facing inward. The short side of the L is connected to the first side portion 131 of the upper mold, and the width of the second side portion 132 of the upper mold gradually decreases from the end connected to the first side portion 131 of the upper mold to its bend 1321.

[0047] The upper mold curved surface 133 is a hyperboloid similar to a saddle surface, has a large curvature, and has a large area. Based on the height direction of the upper mold 13, the upper mold curved surface 133 has obvious height differences on both sides of the edge and in the middle of the edge.

[0048] The upper mold recess 134 is formed between the first edge 131 and the second edge 132 of the upper mold. From the two sides where the upper mold recess 134 connects with the first edge 131 and the second edge 132 of the upper mold to the middle thereof, the upper mold recess 134 gradually recesses toward the middle of the upper mold tire 13 and has a smooth transition surface.

[0049] Therefore, when the skeleton is placed on the upper mold 13, the two sides of the inner surface of the skeleton can be respectively engaged with the first side 131 of the upper mold and the second side 132 of the upper mold, and the multiple reinforcing ribs on one side of the inner surface can be respectively embedded in each reinforcing rib groove 1312, the middle part of the inner surface of the skeleton is roughly in contact with the upper mold recess 134, and the curved surface at one end of the skeleton is roughly in contact with the upper mold curved surface part 133, thereby providing good stability and uniform support for the skeleton during the lamination process.

[0050] The upper mold 13 is an internal hollow structure, and a plurality of fixing holes 135 communicating with the interior are also provided on its profiling surface 13A. The cross section of the fixing hole 135 is roughly a rounded square, and there is another Z-shaped fixing hole 136 in a Z shape. A plurality of skeleton locking mechanisms 14 are respectively arranged in the upper mold 13, and each skeleton locking mechanism 14 comprises a locking cylinder 141 and an L-shaped locking member 142 arranged at the output end of the locking cylinder. The locking member 142 is located in the corresponding fixing hole 135 and can move in a direction perpendicular to the penetration direction of the fixing hole 135 under the drive of the locking cylinder 141. The inner surface of the skeleton also has a plurality of square columnar protrusions and a Z-shaped protrusion. The plurality of fixing holes 135 are respectively arranged corresponding to each square columnar protrusion, and the size is slightly larger than the corresponding square columnar protrusion. When the skeleton is placed on the upper mold 13, each square columnar protrusion can be inserted into the corresponding fixing hole 135 respectively, and the Z-shaped protrusion can be inserted into the corresponding Z-shaped fixing hole 136. Then, under the action of the locking cylinder 141, the locking piece 142 clamps the square columnar protrusion in the corresponding fixing hole 135, thereby fixing the skeleton on the upper mold 13.

[0051] In addition, a skeleton detection sensor is provided at the upper mold tire 13 , which is a photoelectric sensor for detecting whether a skeleton is placed on the upper mold tire 13 .

[0052] Figure 5 : is a three-dimensional diagram of the lower mold in this embodiment, Figure 6 is the orthographic projection of the lower die unit in this embodiment, Figure 7 is a three-dimensional diagram of the lower mold unit in this embodiment, that is, Figure 5 The enlarged view of the corresponding part in Figure 8 This is a three-dimensional view of the lower mold unit from another angle.

[0053] like Figures 5 to 8 As shown, the lower mold 20 includes a lower mold carrier 21 and two lower mold units 20A disposed in the lower mold carrier 21 .

[0054] The lower die carrier 21 includes two lower die square frames 211 with openings facing upward and five lower positioning posts 212. The length of the lower die square frame 211 is substantially the same as that of the upper die square frame 111, and the width is approximately twice that of the upper die square frame 111, and one side of the width direction of the two is roughly aligned. The five lower positioning posts 212 are respectively arranged corresponding to the five upper positioning posts 112, that is, they are respectively arranged at the four corners and the middle of the lower die carrier 21. The upper end of the lower positioning post 212 has a cylindrical positioning piece 213, and the positioning piece 213 matches the positioning matching groove on the positioning matching piece 113. When the upper die 10 is pressed downward toward the lower die 20, each positioning piece 213 is respectively embedded in the corresponding positioning matching groove, thereby playing a guiding and positioning role, so that the upper die 10 and the lower die 20 can be aligned and pressed together, and can also play a limiting role when the upper die 10 is pressed downward into place.

[0055] The two lower mold units 20A are respectively arranged in two lower mold square frames 211, and the two lower mold units 20A are also arranged in mirror symmetry. Each lower mold unit 20A includes a lower mold tire 22, a plurality of skin dragging mechanisms distributed around the lower mold tire 22, and a plurality of skin pre-positioning mechanisms 24. In this embodiment, there are eight skin dragging mechanisms, namely the first to eighth skin dragging mechanisms 23a to 23h; and there are six skin pre-positioning mechanisms 24.

[0056] The surface of the lower mold 22 facing the upper mold 10 is a lower imitation surface 22A, which matches the structure of the outer surface of the rear interior frame of the automobile C-pillar (that is, the surface facing the body of the vehicle when installed in the vehicle). The lower mold 22 has a lower mold first edge 221, a lower mold second edge 222, a lower mold curved surface 223, and a lower mold convex portion 224, which are respectively arranged in position corresponding to the above-mentioned upper mold first edge 131, upper mold second edge 132, upper mold curved surface 133, and upper mold concave portion 134 and match in shape. The lower mold 22 also has a lower mold third edge 225.

[0057] The cross section of the first side portion 221 of the lower mold along its extension direction is also stepped outward, and each portion has a different width. The portions close to both ends form a longitudinal bend, and the sections are also inclined in the longitudinal direction.

[0058] The second side 222 of the lower mold is also roughly L-shaped, and the cross-section along its extension direction is also step-shaped, with a lateral bend formed in the middle. One end of the short side of the L is connected to one end of the first side 221 of the lower mold, and the second side 222 of the lower mold also has a variable width.

[0059] The lower mold curved surface 223 is also a hyperboloid with a large area and a large curvature, and there is an obvious height difference between one side of the edge and the middle of the edge of the lower mold curved surface 223. A protruding corner is formed on one side of the edge.

[0060] The lower mold protrusion 224 is formed between the lower mold first side 221 and the lower mold second side 222. From the two sides where the lower mold protrusion 224 connects with the two to the middle, the lower mold protrusion 224 gradually protrudes outward and has a smooth transition surface.

[0061] The third side 225 of the lower mold and the second side 222 of the lower mold are respectively located on both sides of the lower mold curved surface portion 223. The cross-section of the third side 225 of the lower mold along its extension direction is step-shaped toward the outside, and its extension length is relatively short. The third side 225 of the lower mold is inclined in the horizontal direction, and an obvious height difference is formed between the proximal end of the third side 225 of the lower mold and the second side 222 of the lower mold.

[0062] The skeleton is a thin plate. The structure of the skeleton can be inferred from the structure of the upper mold 13 and the lower mold 22, that is, both sides of the inner surface of the skeleton are stepped, one side of the inner surface of the skeleton mainly has a longitudinal bend and has a plurality of plate-shaped reinforcing ribs; the other side of the inner surface of the skeleton has a longitudinal and transverse bend, forming an obtuse L-shaped edge and a hyperbolic surface with a large curvature. There are a plurality of connecting support protrusions distributed on the inner surface of the skeleton, including square column-shaped protrusions and Z-shaped protrusions. One side of the outer surface of the skeleton also mainly has a longitudinal bend, and the other side of the outer surface also has a longitudinal and transverse bend, forming an obtuse L-shaped edge and a hyperbolic surface with a large curvature, and the outer surface of the skeleton is a smooth transition surface.

[0063] As mentioned above, the skin is made of TPO material and is relatively thin. If the skin is laid flat on the lower mold by some existing laminating equipment, and the upper mold is pressed down with the frame for lamination, or some contoured pushing blocks are used to cooperate at the edge, it is difficult to make the skin fit well on the longitudinal, transverse and curved edges of the frame, especially on the hyperbolic surface of the frame, and the skin is prone to wrinkling, partial adhesion, and inward retraction of the skin edge. In the device and method of this embodiment, the above problems are solved by eight skin dragging mechanisms 23a-23h, multiple skin pre-positioning mechanisms 24 and corresponding control methods.

[0064] Multiple epidermis pre-positioning mechanisms are used to pre-tension the epidermis before lamination, so that the epidermis is in a flat and slightly tensioned state. In this embodiment, multiple small holes are reserved at the edge of the epidermis. The structure of each epidermis pre-positioning mechanism 24 is basically the same, including a needle withdrawal drive cylinder 241, a connecting plate and a hanging needle 242. The connecting plate is arranged on the output end of the needle withdrawal drive cylinder 241, and the hanging needle 242 is vertically arranged at the plate end of the connecting plate. The needle tip of the hanging needle 242 faces upward. Under the drive of the needle withdrawal drive cylinder 241, the hanging needle 242 can move up and down. The needle tip of the hanging needle 242 has a ball head. The position distribution of the multiple hanging needles 242 corresponds to the distribution of the small holes reserved on the epidermis. When in use, the multiple hanging needles are respectively passed through the corresponding small holes on the epidermis to pre-tension the epidermis. Figure 5 A pre-tensioned skin 7 is also shown in a lower mold unit 20A on the middle right side. At this time, the skin 7 is tensioned above the lower mold tire 22 and is not in contact with the lower mold tire 22.

[0065] The eight epidermis dragging mechanisms 23a-23h are used to clamp the edge of the epidermis and drag the epidermis before lamination so that the epidermis forms a covering shape corresponding to the outer surface of the skeleton. Among them, the first to fourth epidermis dragging mechanisms 23a-23d are sequentially distributed beside the first edge 221 of the lower mold, and the first epidermis dragging mechanism 23a is located beside the end where the first edge 221 of the lower mold and the second edge 222 of the lower mold are connected. The first, second and fourth epidermis dragging mechanisms are provided with epidermis pre-positioning mechanisms 24.

[0066] The fifth to eighth surface dragging mechanisms 23e~23h are sequentially distributed beside the second side 222 of the lower mold, the curved surface portion 223 of the lower mold and the third side 225 of the lower mold, among which the fifth surface dragging mechanism 23e is located beside the end where the second side 222 of the first mold and the first side 221 of the lower mold are connected, the seventh surface dragging mechanism 23g is located beside the curved surface portion 223 of the lower mold, and the eighth surface dragging mechanism 23h is located beside the third side 225 of the lower mold.

[0067] Each epidermis dragging mechanism includes a pair of clamping members 231 , a clamping drive cylinder 232 , a clamping member connecting plate 233 , a dragging drive cylinder 234 (lifting drive cylinder), and a dragging support guide assembly 235 .

[0068] The pair of clamping members 231 are both in the shape of rectangular blocks, and their facing surfaces are both flat, and they can clamp the edge of the epidermis when they are close to and in contact with each other. The clamping drive cylinder 232 is used to drive one of the clamping members 231 to rise and fall slightly relative to the other, so as to clamp or loosen the edge of the epidermis. In this embodiment, the output end of the clamping drive cylinder 232 is connected to the upper clamping member 231 through a corresponding connecting rod structure, and is used to drive the clamping member 231 to rise and fall.

[0069] The clamping member connecting plate 233 is an L-shaped plate, a pair of clamping members 231 and their corresponding connecting rod structures are installed above the short side of the clamping member connecting plate 233, and the clamping drive cylinder 232 is installed below the short side, and its piston rod passes through the upper hole on the plate. In this embodiment, in order to make the device structure more simple and compact, the epidermis pre-positioning mechanism 24 is installed on the clamping member connecting plate 233.

[0070] The dragging drive cylinder 234 is vertically arranged with the output end facing upwards, and its output end is connected to the clamping member connecting plate 233, which can drive the clamping member connecting plate 233 and a pair of clamping members 231 thereon to rise and fall, so that the epidermis can be dragged by rising and falling after a pair of clamping members 231 clamp the edge of the epidermis.

[0071] The dragging support guide assembly 235 is used to support the clamping member connecting plate 233 and guide it when the dragging drive cylinder 234 drives it to move. The dragging support guide assembly 235 includes a vertical support plate, a vertical guide rail and a slider. The upper end of the support plate is fixed to the lower surface of the clamping member connecting plate 233, and the slider is fixed to one surface of the support plate and slidably engaged with the guide rail. Among them, the dragging support guide assembly 235 of the first and eighth epidermis dragging mechanisms also has a lifting limit structure, so that the moving distance of the clamping member 231 is small.

[0072] The third epidermis dragging mechanism 23c and the seventh epidermis dragging mechanism 23g further have a secondary dragging driving cylinder 236 and a secondary supporting guide assembly 237, so that the vertical stroke of a pair of clamping members 231 is larger. Among them, the secondary dragging driving cylinder 236 is vertically arranged with the output end facing upward, the secondary supporting guide assembly 237 includes a vertical secondary supporting plate, a guide rail and a slider, the dragging driving cylinder 234 is fixed on one surface of the secondary supporting plate, and the other surface of the secondary supporting plate has a mounting plate portion protruding outward, and the output end of the secondary dragging driving cylinder 236 is fixed to the mounting plate portion.

[0073] The fourth epidermis dragging mechanism 23d and the eighth epidermis dragging mechanism 23h further have a vertically arranged elevated support plate 238, and their dragging support guide assembly 235 and dragging drive cylinder 234 are installed at the upper end of the elevated support plate 238, so that their pair of clamping members 231 are located at a relatively higher position.

[0074] Figures 5 to 8The diagram shown in FIG. 1 is a diagram of each pair of clamping members in the reset state. As shown therein, in this embodiment, according to the structural setting of each skin dragging mechanism, the number of dragging drive cylinders and the stroke setting, in the reset state, all the multiple pairs of clamping members 231 are approximately at the same height and are all located above the lower mold tire 22, so that the skin can be approximately horizontally stretched above the lower mold tire 22. Afterwards, under the action of the corresponding dragging drive cylinders, each pair of clamping members is respectively driven to different heights (heights corresponding to the shape of the outer surface of the skeleton), so that the skin can be pre-laminated when the skeleton and the skin are not in contact, so that the skin can be better attached to the skeleton in the subsequent laminating operation.

[0075] Among them, the third skin dragging mechanism 23c is located at a longitudinal bending portion of the first side portion 221 of the lower mold, and the seventh skin dragging mechanism 23g is located at the curved portion 223 of the lower mold. The heights of these two places are relatively low, so the moving distance of their clamping members 231 is relatively larger, and the moving distances of the clamping members 231 of the first, fourth and eighth skin dragging mechanisms at the end of the lower mold tire 22 are relatively small.

[0076] The dragging distances of the first to eighth skin dragging mechanisms 23a-23h (that is, the moving distances of the pair of clamping members 231 thereof) are respectively denoted as H1-H8, and then:

[0077] H7>H3>H2≈H6>H4≈H8>H1

[0078] In addition, a skin detection sensor is provided at the lower mold tire 22 , which is a photoelectric sensor for detecting whether a skin is placed above the lower mold tire 22 .

[0079] Optionally, the upper mold 10 and the lower mold 20 may be provided with in-position detection sensors for detecting whether each cylinder or several main cylinders have moved to their proper positions.

[0080] Optionally, a flow path for introducing cooling water may be provided in either or both of the upper mold 13 and the lower mold 22 to cool the formed automobile C-pillar rear interior trim after the skin lamination is completed.

[0081] like Figure 1 As shown, the heating mechanism 30 is disposed above the lower mold 20 , and includes a mechanism carrier 31 , a translation mechanism 32 , and two heating units 30A.

[0082] The mechanism carrier 31 includes two upwardly opened mechanism square frames 311 , the size of which is substantially the same as that of the upper mold square frame 111 .

[0083] The two heating units 30A are respectively arranged in the mechanism frame 31 and are also arranged in mirror symmetry. That is, in the vertical direction, two sets of upper mold units 10A, lower mold units 20A, and heating units 30A are formed, which can be used to simultaneously produce two mirror symmetric automobile C-pillar rear interior trims. Since two such automobile C-pillar rear interior trims are used in one car, such an arrangement is not only conducive to improving production efficiency, but also can make the two interior trims in one car have better consistency.

[0084] Each heating unit 30A includes a plurality of lamp holders 33 and a plurality of heating lamp tubes 34. The lamp holders 33 are arranged vertically, with the lower ends fixed on the inner bottom surface of the mechanism frame 31, and the upper ends have a clamping structure similar to a clamping claw for clamping the heating lamp tubes 34. Each heating lamp tube 34 corresponds to 2 to 3 lamp holders 33. The heating lamp tube 34 arranged in the middle of the mechanism square frame 311 is arranged roughly horizontally, and the remaining plurality of heating lamp tubes 34 are arranged obliquely, with the end thereof closer to the middle of the mechanism square frame 311 being lower. The distribution of the plurality of heating lamp tubes 34 corresponds to the shape of the upper imitation contour surface 13A, so that the skeleton surface arranged on the upper mold can be heated more evenly.

[0085] The translation mechanism 32 enables the mechanism frame 31 and the two heating units 30A therein to be placed on the lower die frame 21, and can move horizontally in the width direction of the lower die frame 21 relative to the lower die frame 21. The translation mechanism 32 includes a translation drive motor 321, a drive rod 322, a plurality of bearings 323, a gear 324, a rack 325, and a guide assembly 326. Among them, the plurality of bearings 323 are respectively installed on one side of the mechanism frame 31 and close to its bottom, and the drive rod 322 is connected to the mechanism frame 31 through the plurality of bearings 323, and its axial direction is consistent with the length direction of the mechanism frame 31. The translation drive motor 321 is connected to the drive rod 322 through a corresponding transmission assembly (not shown in the figure). Two gears 324 are respectively installed on both ends of the drive rod 322. Two racks 325 are respectively installed on the inner sides of the two side plates of the lower die frame 21, and their tooth surfaces face upward and mesh with the gears 324 on the corresponding sides. The guide assembly 326 includes a guide rail and a slider. The two guide rails are respectively arranged on the inner side of the two side plates of the lower mold carrier 21 and are located above the rack 325 and are arranged parallel to the rack 325. A plurality of sliders are respectively arranged on the outer side of the two side plates of the mechanism carrier 31 and are slidably engaged with the guide rails on both sides. Therefore, under the drive of the translation drive motor 321, the drive rod 322 drives the gear 324 to rotate, thereby driving the entire mechanism carrier 31 and the two heating units 30A therein to move along the rack 325.

[0086] In this embodiment, the two lower mold units 20A in the lower mold 20 are arranged on one side of the width direction of the lower mold 20, and the upper mold 10 is correspondingly arranged directly above the lower mold unit 20A. Therefore, when the mechanism carrier 31 moves to this side of the lower mold 20, the skeleton and the skin can be heated, and this position is recorded as the heating position. When it moves to the other side of the lower mold 20, it will not cause obstruction to the upper mold 10 and the lower mold unit 20A, and this position is recorded as the waiting position.

[0087] The upper mold lifting mechanism is used to drive the upper mold 10 to lift and lower as a whole, and the lifting mechanism in the prior art can be used.

[0088] Before the equipment starts working, the heating unit 30A is in the waiting position and the upper mold 10 is in the reset position (i.e., it rises to the predetermined highest point). At this time, the skeleton is manually placed on the upper mold tire 13, the skin is placed on top of the lower mold tire 22, and the skin is pre-tensioned using multiple hanging needles. Then the equipment can be started to automatically laminate the skin.

[0089] Fig. 9 It is a logic block diagram of the control module in this embodiment.

[0090] like Fig. 9 As shown, the automobile C-pillar rear interior trim surface laminating device 100 further includes a control module 90 for controlling the surface laminating process.

[0091] The control module 90 includes a skeleton detection unit 91, an epidermis detection unit 92, a skeleton fixing control unit 93, a heating control unit 94, a pre-covering control unit 95, an epidermis covering control unit 96, a reset control unit 97, and a general control unit 98. Optionally, a start-stop control unit may also be included.

[0092] The skeleton detection unit 91 obtains a detection signal from the skeleton detection sensor, and determines whether a skeleton is placed on the upper mold 13 according to the detection signal.

[0093] The skin detection unit 92 obtains a detection signal from the skin detection sensor, and determines whether a skin is placed on the lower mold 22 based on the detection signal.

[0094] When the skeleton detection unit 91 detects and determines that a skeleton is placed on the upper mold 13 , the skeleton fixing control unit 93 controls the multiple skeleton locking mechanisms 14 to operate and lock the skeleton on the upper mold 13 .

[0095] The heating control unit 94 is used to control the translation drive motor 321 to drive the mechanism carrier 31 and the heating unit 30A to move to the heating position after the skin detection unit 92 detects that the skin is placed above the lower mold 22 for a predetermined time, and then control the heating lamp 34 to start working and continue for a predetermined time, and control the heating lamp 34 to stop working after heating for a sufficient time, and control the translation drive motor 321 to drive the mechanism carrier 31 and the heating unit 30A to move to the waiting position. That is, move to the top of the lower mold unit 20A for heating, so as to heat the skin to activate the glue, and also heat the skeleton at the upper mold 10 to a certain extent, so as to improve the bonding effect.

[0096] The laminating preparation control unit 95 is used to perform preparation work before skin laminating after the heating control unit 94 completes its control operation, and includes a skin clamping control unit 951, a needle withdrawal control unit 952, and a pre-laminating control unit 953. Among them, the skin clamping control unit 951 is used to control multiple clamping drive cylinders 232 to drive each pair of clamping members 231 to clamp the skin edges at corresponding positions after the heating control unit 94 completes its control operation. The needle withdrawal control unit 952 is used to control multiple needle withdrawal drive cylinders 241 to drive multiple hanging needles 242 to move downward after the skin clamping control unit 951 completes its control operation, so that the hanging needles 242 are separated from the skin. The pre-cladding control part 953 is used to control multiple dragging drive cylinders 234 and secondary dragging drive cylinders 236 to drive multiple pairs of clamps 231 to drag the epidermis edges at corresponding positions for corresponding distances after the needle withdrawal control part 952 completes its control operation, thereby achieving pre-cladding of the epidermis before it contacts the skeleton.

[0097] The epidermis laminating control unit 96 is used to control the upper mold lifting mechanism to drive the upper mold 10 to be pressed down toward the lower mold 20 and maintain the pressing state for a predetermined time after the laminating preparation control unit 95 completes its control operation (that is, after the pre-laminating control part 953 completes its control operation), thereby achieving lamination of the epidermis and the skeleton.

[0098] The reset control unit 97 is used to control each mechanism to perform a reset operation after the epidermis laminating control unit 96 completes its control operation, including controlling multiple clamping drive cylinders 232 to drive each pair of clamping members 231 to loosen the epidermis edge, controlling multiple dragging drive cylinders 234 and secondary dragging drive cylinders 236 to drive the clamping members 231 to reset to the initial height, and controlling the upper mold lifting mechanism to drive the upper mold 10 to rise to a predetermined height.

[0099] The general control unit 98 is used to control the operation of the above-mentioned functional units.

[0100] Fig.10 It is a flow chart of the method for laminating the surface skin of the rear interior trim of the automobile C-pillar in this embodiment.

[0101] like Fig.10 As shown, based on the above-mentioned automobile C-pillar rear interior trim surface laminating device 100, the corresponding surface laminating method includes the following steps:

[0102] Step S1, manually place the skeleton on the upper mold 13, and place the skin coated with glue on the top of the lower mold 22 through a plurality of hanging needles 242 and pre-tension it.

[0103] In step S2 , the skeleton detection unit 91 detects that a skeleton is placed on the upper mold 13 , and the skeleton fixing control unit 93 controls the plurality of skeleton locking mechanisms 14 to lock the skeleton.

[0104] Step S3, the skin detection unit 92 detects that a skin is placed above the lower mold 22, and the heating control unit 94 controls the heating unit 30A to move to above the lower mold unit 20A and heat the skin, and controls the heating unit 30A to reset after the heating is completed.

[0105] Step S4, the epidermis clamping control part 951 controls each clamping driving cylinder 232 to drive each pair of clamping members 231 to clamp the epidermis edges at corresponding positions.

[0106] In step S5, the needle withdrawal control part 952 controls each needle withdrawal driving cylinder 241 to drive each material hanging needle 242 to move downward, so that the material hanging needle 242 is separated from the skin.

[0107] Step S6, the pre-lamination control part 953 controls each dragging driving cylinder 234 and the secondary dragging driving cylinder 236 to drive each pair of clamping members 231 to drag the skin edge at the corresponding position for a corresponding predetermined distance.

[0108] Among them, as mentioned above, the dragging distance is relatively larger at the lower mold curved surface portion 223 and a longitudinal curved portion of the lower mold first edge 221, while the dragging distance is relatively small at the end of the lower mold tire 22, so that the epidermis roughly forms a covering shape corresponding to the outer surface of the skeleton before it contacts the skeleton.

[0109] Step S7 , the skin covering control unit 96 controls the upper mold lifting mechanism to drive the upper mold 10 to press down toward the lower mold 20 to the desired position, and maintains the pressing state for a predetermined period of time to complete the skin covering.

[0110] Step S8, the reset control unit 97 controls each mechanism to reset, and the processed automobile C-pillar rear interior trim can be taken out after or during the reset.

[0111] Through the above steps, the skin lamination of the interior decoration part can be automatically completed. The above steps are only exemplary process steps, and certain modifications can be made according to actual needs. For example, the frame can be auxiliary heated by an auxiliary heating mechanism in the steps, or the formed interior decoration part can be cooled after lamination. Some of the above steps can also be performed simultaneously to further improve production efficiency, etc.

[0112] Functions and Effects of the Embodiments

[0113] According to the automobile C-pillar rear interior trim surface laminating device provided in this embodiment, the device includes an upper mold and a lower mold, which are respectively used to carry a frame and a surface, and are used to cooperate with each other to perform surface lamination. Among them, the lower mold includes a lower mold tire, a plurality of skin pre-positioning mechanisms distributed around the lower mold tire, and a plurality of skin dragging mechanisms. The plurality of skin pre-positioning mechanisms can make the skin not contact with the lower mold tire first, but pre-tension the skin above the lower mold tire first, and then the plurality of skin dragging mechanisms can clamp a plurality of points on the edge of the skin, and drag each point for a corresponding predetermined dragging distance, especially at the position corresponding to the curved surface of the skeleton, it can drag a correspondingly larger distance, so that the skin can be pre-wrapped before being laminated with the skeleton, and the skin forms a coating shape corresponding to the outer surface of the skeleton, so that the skin can be better fitted to the skeleton in the subsequent laminating operation, avoiding problems such as wrinkling of the skin and inward shrinkage of the edges, and avoiding problems such as cracking caused by pulling the skin hard during the laminating process, thereby realizing the automated production of the rear interior trim of the automobile C-pillar and improving the production efficiency and the quality of the finished product.

[0114] In the embodiment, two rows of eight skin dragging mechanisms are arranged on both sides of the lower mold, and corresponding to the surface and edge structure of the skeleton, the seventh skin dragging mechanism arranged next to the curved surface portion of the lower mold and the third skin dragging mechanism arranged next to a longitudinal curved portion of the first side of the lower mold drag the skin edge for a longer distance, and the multiple skin dragging mechanisms arranged at the corners of the lower mold drag the skin for a smaller distance, and the initial positions of the clamping parts of the eighth skin dragging mechanism arranged next to the third side of the lower mold and the fifth skin dragging mechanism opposite to it are correspondingly set higher. Therefore, through the arrangement of such multiple skin dragging mechanisms, the skin can form a pre-wrapped shape that corresponds well to the surface of the skeleton after lamination.

[0115] Furthermore, each epidermal dragging mechanism has a dragging drive cylinder and a dragging support guide assembly, and the third epidermal dragging mechanism and the seventh epidermal dragging mechanism further have a secondary dragging drive cylinder and a secondary support guide assembly, thereby not only enabling the two epidermal dragging mechanisms to achieve a greater dragging distance, but also accelerating their dragging speed.

[0116] Furthermore, a skin pre-positioning mechanism is arranged next to the clamping parts of the six skin dragging mechanisms, including a hanging needle and a needle withdrawal driving cylinder. Therefore, the skin can be pre-tensioned by multiple hanging needles to keep it flat before the pre-lamination begins, avoiding problems such as wrinkling and partial adhesion of the skin. The position distribution of multiple hanging needles corresponds to the material, elasticity, thickness and other parameter settings of the skin, which can avoid over-stretching the skin while pre-tensioning it, thereby avoiding problems such as cracking of the skin. After the skin dragging mechanism clamps the edge of the skin, the hanging needle can be driven downward by the needle withdrawal driving cylinder to separate the hanging needle from the skin without manual operation. Therefore, after placing the skeleton and skin in the upper and lower molds respectively, automated production and processing can be achieved, which is more convenient and efficient.

[0117] Furthermore, the device also includes a translatable heating mechanism, which can translate between the upper and lower molds to heat the skin, and can translate to one side when necessary, without blocking the upper and lower molds, so that the skeleton and the skin can be placed conveniently, and the upper mold can be pressed down toward the lower mold to laminate the skin. In addition, the multiple lamps in the heating mechanism can be distributed and tilted according to the surface structure of the skeleton, and can also heat the skeleton to a certain extent to achieve a better lamination effect, and can achieve a more uniform heating effect on the surface of the skeleton.

[0118] Furthermore, the upper mold, lower mold and heating mechanism respectively have two mirror-symmetrical upper mold units, lower mold units and heating units, and are arranged correspondingly in the vertical direction, so that two mirror-symmetrical interior parts can be produced at the same time. Since a car will require two such interior parts, not only the production efficiency is higher, but also the two interior parts used in a car can have better consistency.

[0119] Furthermore, under the control of the control module, it can automatically detect whether the upper and lower molds are respectively placed with a skeleton and a skin, and after detection, automatically perform skeleton locking, skin heating, skin clamping, hanging needle withdrawal, skin dragging (pre-coating) and skin lamination operations, and after the processing of one interior decoration part is completed, each mechanism can be automatically reset to proceed with the processing of the next interior decoration part. The high degree of automation can improve the production efficiency of the interior decoration part and the consistency of the finished product.

[0120] 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 device for automobile C-pillar rear interior parts, used for laminating a skin coated with glue on a frame to make an automobile C-pillar rear interior part, wherein one side of the frame has a curved surface, characterized in that: include: An upper mold having an upper mold tire for carrying the skeleton; as well as The lower mold is used to place the skin and cooperate with the upper mold to perform skin lamination. Wherein, the lower mold comprises: A lower mold tire, having a lower imitation contour surface facing the upper mold tire, and one side of which has a lower mold curved surface portion corresponding to the curved surface portion of the framework; A plurality of skin pre-positioning mechanisms are distributed around the lower mold and are used to pre-tension the skin above the lower mold; as well as A plurality of skin dragging mechanisms are distributed around the lower mold, and are used to clamp the skin edge at the corresponding position, and drag the clamped skin edge for a corresponding predetermined drag distance, so that the skin is in a covering shape corresponding to the outer surface of the skeleton before lamination. One of the skin dragging mechanisms is arranged beside the lower mold curved surface portion, and a predetermined dragging distance of the skin dragging mechanism is greater than the predetermined dragging distances of the remaining plurality of skin dragging mechanisms.

2. The automobile C-pillar rear interior trim laminating equipment according to claim 1, Features: in, The epidermis dragging mechanism comprises: A pair of clamping members having clamping surfaces facing each other, wherein the clamping surfaces are planes; A clamping drive cylinder, used for driving a pair of the clamping members to move relative to each other, thereby clamping or loosening the skin edge; A clamping member connecting plate, on which the clamping member and the clamping driver are both arranged; A dragging drive cylinder, the output end of which is connected to the clamping member connecting plate, and is used to drive the clamping member connecting plate and the clamping member to move up and down; and The dragging support guide assembly is used to support the clamping member connecting plate and guide the movement of the clamping member connecting plate when the dragging drive cylinder drives the clamping member connecting plate to move.

3. The automobile C-pillar rear interior trim laminating equipment according to claim 2, characterized in that: in, The lower mold tire also has: The first side portion of the lower mold and the lower mold curved portion are respectively located on both sides of the lower mold tire and have a longitudinal curved portion; and The second side portion of the lower mold and the third side portion of the lower mold are located on the same side of the lower mold tire as the lower mold curved surface portion and are respectively located on both sides of the lower mold curved surface portion. The second side portion of the lower mold has a transverse curved portion. One end of the first side of the lower mold is connected to one end of the second side of the lower mold, A plurality of the leather dragging mechanisms are arranged in two rows on both sides of the lower mold tire, At least three of the skin dragging mechanisms are sequentially arranged beside the first side of the lower mold. At least one of the skin dragging mechanisms is arranged beside the second side of the lower mold, At least one of the skin dragging mechanisms is arranged beside the third side of the lower mold, The predetermined dragging distance of each skin dragging mechanism corresponds to the height of the edge of the corresponding lower mold tire.

4. The automobile C-pillar rear interior trim laminating equipment according to claim 3, Features: in, The plurality of skin dragging mechanisms disposed on one side of the first side of the lower mold are sequentially a first skin dragging mechanism to a fourth skin dragging mechanism, wherein the third skin dragging mechanism is located beside the longitudinal bending portion, The plurality of skin dragging mechanisms disposed on the other side of the lower mold tire are sequentially the fifth skin dragging mechanism to the eighth skin dragging mechanism, wherein the seventh skin dragging mechanism is located beside the lower mold curved surface portion. The third skin dragging mechanism and the seventh skin dragging mechanism further include: A secondary support guide assembly comprises a secondary support plate, and the dragging drive cylinder is arranged on the secondary support plate; as well as The secondary dragging driving cylinder is connected to the secondary supporting plate and is used for driving the secondary supporting plate and the dragging driving cylinder to move up and down.

5. The automobile C-pillar rear interior trim laminating equipment according to claim 4, Features: in, There are six epidermal pre-positioning mechanisms, which are respectively arranged beside the first epidermal dragging mechanism, the second epidermal dragging mechanism, the fourth epidermal dragging mechanism, the fifth epidermal dragging mechanism, the seventh epidermal dragging mechanism, and the eighth epidermal dragging mechanism. Each of the epidermal pre-positioning mechanisms comprises: A material hanging needle is arranged beside the corresponding clamping member, with its needle head facing upward; as well as The needle withdrawal driving cylinder is used to drive the hanging needle to move up and down.

6. The automobile C-pillar rear interior trim laminating equipment according to claim 5, characterized in that: Also includes: A heating mechanism for heating the skin to activate the glue, Wherein, the heating mechanism comprises: A mechanism carrier frame is arranged above the lower die; A plurality of lamp tube supports, arranged on the mechanism support frame; A plurality of heating lamp tubes are fixed in the machine carrier frame through a plurality of lamp tube brackets, and the distribution of the lamp tube brackets corresponds to the surface shape of the frame; and The translation mechanism is used to drive the mechanism carrier to translate.

7. The automobile C-pillar rear interior trim laminating equipment according to claim 6, Features: in, The inner surface of the frame has a plurality of connection support protrusions. The upper die also includes: a skeleton detection sensor, disposed at the upper mold tire, for detecting whether the skeleton is placed on the upper mold tire; and Multiple skeleton locking mechanisms, including locking cylinders and locking pieces, the upper mold tire is hollow and has multiple fixing holes, respectively used to allow each of the connecting support protrusions to penetrate, the locking cylinder is used to drive the locking piece to move in the fixing hole, so that the locking piece cooperates with the fixing hole to lock the connecting support protrusion, The lower die also includes: The skin detection sensor is arranged at the lower mold tire and is used to detect whether the skin is placed above the lower mold tire.

8. The automobile C-pillar rear interior trim laminating equipment according to claim 7, characterized in that: Also includes: A control module is used to control the process of skin covering. Wherein, the control module comprises: A skeleton detection unit, used for obtaining a detection signal from the skeleton detection sensor and judging whether the skeleton is placed on the upper mold tire according to the detection signal; An epidermis detection unit, used for obtaining a detection signal from the epidermis detection sensor, and judging whether the epidermis is placed on the lower mold tire according to the detection signal; A skeleton fixing control unit, used for controlling the plurality of skeleton locking mechanisms to lock the skeleton on the upper mold when the skeleton detection unit determines that a skeleton is placed; A heating control unit, configured to control the translation mechanism to drive the mechanism carrier to move to the top of the lower mold tire after the skin detection unit detects that the skin is placed on the top of the lower mold tire, so as to heat the skin, and control the translation mechanism to drive the mechanism carrier to move to a predetermined waiting position after the heating is completed; The laminating preparation control unit is used to control the plurality of clamping drive cylinders to respectively drive the corresponding pair of clamping members to clamp the edge of the skin after the heating control unit completes its control operation, and then control the plurality of needle withdrawal drive cylinders to respectively drive the corresponding hanging needles to move downward so that the hanging needles are separated from the skin, and then control the plurality of dragging drive cylinders and the secondary dragging drive cylinders to drive the corresponding pair of clamping members to drag the skin edge at the corresponding position by the corresponding predetermined dragging distance; and The skin covering control unit is used to control the upper mold lifting mechanism to drive the upper mold to press down toward the lower mold after the covering preparation control unit completes its control operation, so as to cover the skin and the frame.

9. The automobile C-pillar rear interior trim laminating equipment according to any one of claims 1 to 8, characterized in that: in, The upper mold comprises an upper mold carrier and two upper mold units arranged in the upper mold carrier in a mirror-symmetrical manner, each of the upper mold units comprises the upper mold tire, The lower mold includes a lower mold carrier and two lower mold units that are mirror-imaged and correspondingly arranged in the lower mold carrier. Each of the lower mold units includes the lower mold tire, a plurality of the skin pre-positioning mechanisms, and a plurality of the skin dragging mechanisms.

10. A method for laminating an automobile C-pillar rear interior trim, for laminating a skin coated with glue on a frame to form an automobile C-pillar rear interior trim by using an automobile C-pillar rear interior trim laminating device as claimed in any one of claims 1 to 9, wherein one side of the frame has a curved surface, characterized in that: The method comprises the following steps: Placing the skeleton on the upper mold; Placing the skin on the lower mold and pre-tensioning the skin through a plurality of skin pre-positioning mechanisms; Clamping the skin edges at corresponding positions respectively by a plurality of skin dragging mechanisms, and dragging the clamped skin edges by a corresponding predetermined dragging distance respectively, so that the skin is in a covering shape corresponding to the outer surface of the skeleton before lamination; and The upper mold is pressed downward toward the lower mold to cover the skin on the frame.

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