Car armrest composite edge wrapping equipment

Abstract

The present invention provides a composite edging device for automobile armrests, which is used for sticking a skin with a hot-melt adhesive layer on the inner surface to an automobile armrest frame and edging the automobile armrest frame, and has the following characteristics, including: a supporting mechanism; a skin fixing device, which is arranged on the supporting mechanism and is used to fix the skin; a frame fixing device, which is arranged on the supporting mechanism and is located above the skin fixing device and is used to fix the automobile armrest frame; a baking device, which is arranged on the supporting mechanism and is used to melt the hot-melt adhesive layer of the decorative fabric and heat the door panel; and an edging device, which is used to edge the automobile armrest frame, wherein the skin fixing device includes a contouring mold, a pneumatic positioning unit, and a vacuum generator, and the pneumatic positioning unit has a positioning pin that matches the positioning hole, and the positioning pin is used to pass through the positioning hole so that the skin is positioned on the contouring mold.

Description

Technical Field

[0001] The invention relates to the field of machinery, and in particular to a composite hemming device for an automobile armrest. Background Art

[0002] During the processing of the semi-finished automobile armrest, it is necessary to first spray hot melt adhesive on the inner surface of the cut skin to form a hot melt adhesive layer, and then paste the skin with the hot melt adhesive layer on the outer surface of the automobile armrest frame, and then flip the skin located at the edge of the automobile armrest frame and wrap it around and paste it on the inner surface of the automobile armrest frame.

[0003] At present, the glue spraying process in the processing of semi-finished automobile products is usually completed manually, and the pasting of the skin, decorative fabrics, etc. and the edge binding process are completed manually or automatically by edge binding equipment. CN108582808A discloses a door panel edge binding device with a pulling member, which is used to paste decorative fabrics and edge binding on the door panel frame. The fabric fixing structure used in the fabric pasting is fixed by pulling and vacuuming the pulling member, and the pulling member takes up a large space, which is not conducive to the layout of the overall equipment, and the control process of the pulling member is also relatively complicated.

[0004] In addition, the structure of the car armrest is very different from that of the car door panel, and the edging requirements are also different. Figure 8 Schematic diagram of the structure of the automobile armrest frame of the present invention, such as Figure 8 As shown, the automobile armrest frame 1 includes a transition edge 2 and a non-transition edge 3 . Fig. 9 yes Figure 8 The enlarged schematic diagram of the transition edge is shown in Figure 2. Fig. 9 As shown, the transition edge 2 narrows from wide in the horizontal direction and gradually decreases in height in the vertical direction, that is, it is S-shaped in both the horizontal and vertical directions. The special structure of the transition edge 2 increases the difficulty of hemming this part, and the hemming structure in the prior art cannot hem it.

[0005] In addition, the skin used for processing the above-mentioned automobile armrest is a PVC skin, including a first skin area and a second skin area connected together. For the sake of aesthetics, three stitches extending along the length direction are arranged on the first skin area, and a plurality of positioning holes are pre-cut on the entire edge of the entire skin. The positioning holes penetrate the skin, and the plurality of positioning holes are evenly distributed along the edge of the skin. In the prior art, there is no special fixing device to position such a skin.

[0006] In summary, there is an urgent need to provide an automated equipment for surface spraying, fixing and hemming of automobile armrests. Summary of the invention

[0007] The present invention is developed to solve the above-mentioned problems of skin fixing, sticking and edge wrapping of automobile armrests, and aims to provide a composite edge wrapping device for automobile armrests.

[0008] The present invention provides a composite hemming device for automobile armrests, which is used for pasting a skin with a hot-melt adhesive layer on the inner surface onto an automobile armrest frame and hemming the automobile armrest frame, and has the following characteristics: a supporting mechanism; a skin fixing device, which is arranged on the supporting mechanism and is used to fix the skin; a frame fixing device, which is arranged on the supporting mechanism and is located above the skin fixing device and is used to fix the automobile armrest frame; a baking device, which is arranged on the supporting mechanism and is used to melt the hot-melt adhesive layer of the decorative fabric and heat the door panel; and an hemming device, Used for edging the armrest frame of an automobile, wherein the epidermis fixing device includes a fixing frame and a contour mold fixedly arranged on the fixing frame, a pneumatic positioning unit, and a vacuum generator. The contour mold has a shape matching the shape of the armrest frame of the automobile and is used for positioning the epidermis. The contour mold is provided with a plurality of through holes. The pneumatic positioning unit has a positioning needle matching the positioning hole. The positioning needle is used to pass through the positioning hole so that the epidermis is positioned on the contour mold. The vacuum generator is respectively connected to the plurality of through holes and is used to evacuate the through holes so that the epidermis is adsorbed and sucked tightly on the contour mold.

[0009] The composite edging equipment for the automobile armrest provided by the present invention may also have the following features: wherein, the epidermis includes a first epidermis area, a stitch extending along the length direction is arranged on the first epidermis area, the contoured mold includes a first mold area corresponding to the first epidermis area, a plurality of through holes are arranged in a through hole group, a plurality of through holes in the through hole group arranged on the first mold area are distributed linearly along the length direction of the contoured mold, a plurality of through hole groups are distributed in rows or columns, and no through holes are arranged on the portion of the first mold area corresponding to the stitch.

[0010] The composite edging equipment for automobile armrests provided by the present invention may also have the following features: wherein, the epidermis also includes a second epidermis area, the contoured mold also includes a second mold area corresponding to the second epidermis area, and the multiple through holes in the through hole group arranged on the second mold area are distributed linearly along the width direction of the contoured mold, and the multiple through hole groups are distributed in rows.

[0011] The composite hemming device for the automobile armrest provided by the present invention may also have the following feature: wherein the pneumatic positioning unit further has a cylinder, and the cylinder drives the positioning needle to move downward or upward.

[0012] The composite edging equipment for automobile armrests provided by the present invention may also have the following features: a through hole is also provided on the contoured mold, and the positioning needle corresponds to the through hole. When the cylinder drives the positioning needle to rise, the positioning needle passes through and out of the through hole. The part of the positioning needle that passes through the through hole is used to position the epidermis. When the cylinder drives the positioning needle to move downward, the top of the positioning needle is lower than the top of the through hole.

[0013] The composite hemming device for automobile armrests provided by the present invention may also have the following features: wherein the automobile armrest frame includes a transition edge, the hemming device includes a hemming mechanism for imitating hand-like grasping for hemming the transition edge, the hemming mechanism includes a first flanging unit, a first positioning and clamping unit, and a first control unit, the first flanging unit includes: a first flanging block, which is correspondingly arranged on the outer side of the transition edge, is arranged horizontally, is in an inverted L shape, matches the shape of the transition edge, has a first upper surface and a first lower surface in an S shape in the vertical direction, and a first side surface in an S shape in the horizontal direction; and a first flanging driving component, which is used to drive the first flanging block to move forward or backward, the first positioning and clamping unit includes: a first flanging block, which is arranged correspondingly on the outer side of the transition edge, is arranged horizontally, is in an inverted L shape, matches the shape of the transition edge, has a first upper surface and a first lower surface in an S shape in the vertical direction, and a first side surface in an S shape in the horizontal direction; and a first flanging driving component, which is used to drive the first flanging block to move forward or backward, the first positioning and clamping unit includes: a first flanging block, which .... A clamping block is rotatably connected to the first flange block, is in an inverted L shape, and has a clamping lower surface that matches the shape and size of the first upper surface; and a first clamping driving component is used to drive the first clamping block to rotate forward or backward by a predetermined angle. The first control unit controls the first clamping driving component to drive the first clamping block to rotate forward by a predetermined angle, so that the clamping lower surface presses the skin on the first upper surface in a predetermined state, and the predetermined state is a state in which the first clamping block and the first flange block can both drive the skin to move and slide relative to the skin; the first control unit also controls the first flange driving component to drive the first flange block to move forward at a second predetermined speed, so that the skin flips from the outer surface of the automobile armrest frame to the inner surface.

[0014] In the composite edging equipment for the automobile armrest provided by the present invention, it can also have the following characteristics: wherein, the first flanging driving component is also used to drive the first flanging block to move downward or upward, and the first control unit also controls the first flanging driving component to drive the first flanging block to move upward at a first predetermined speed, so that the first lower surface is higher than the predetermined height of the upper surface of the transition edge, and the first control unit also controls the first flanging driving component to drive the first flanging block to move downward at a third predetermined speed, so that the skin covers the inner surface of the automobile armrest frame.

[0015] The composite edging equipment for automobile armrests provided by the present invention may also have the following characteristics: wherein the first predetermined speed, the second predetermined speed and the third predetermined speed are equal, and the predetermined height is less than or equal to the thickness of the skin.

[0016] The composite hemming device for the automobile armrest provided by the present invention may also have the following features: wherein the first clamping block and the first flanging block are rotatably connected via a rotating shaft, and the first clamping driving component and the first flanging driving component are both cylinder driving components.

[0017] Functions and Effects of the Invention

[0018] According to the automobile armrest composite edging equipment involved in the present invention, because it includes a skin fixing device, a frame fixing device, a baking device and an edging device, the skin can be sprayed with glue through the glue spraying equipment, and the skin with hot melt adhesive on the inner surface can be pasted on the automobile armrest frame through the automobile armrest composite edging equipment, and the automobile armrest frame can be edged, and the operation of the glue spraying equipment and the automobile armrest composite edging equipment can be controlled by the control device, that is, the system can realize automatic glue spraying, automatic skin pasting and edging processing, thereby improving the quality stability and efficiency of automobile armrest processing.

[0019] In addition, because the epidermis fixing device in this embodiment includes a profiling mold, a pneumatic positioning unit and a vacuum generator, the profiling mold is provided with a plurality of through holes, and the pneumatic positioning unit has a positioning needle that matches the positioning hole on the epidermis, the epidermis can be initially positioned by the positioning needle and the positioning hole, so that the epidermis can be accurately placed on the positioning needle and the profiling mold, and then the through hole is vacuumed by the vacuum generator so that the epidermis is adsorbed and tightly sucked on the profiling mold. Therefore, the epidermis fixing device can achieve rapid and accurate positioning of the epidermis, and the device also has the advantages of simple structure and easy automatic control. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a structural block diagram of a glue spraying and edging system for an automobile armrest in an embodiment of the present invention;

[0021] Figure 2 The three-dimensional structure diagram of the composite hemming equipment for the automobile armrest in the embodiment of the present invention is shown in FIG. Figure 1 ;

[0022] Figure 3 The three-dimensional structure diagram of the composite hemming equipment for the automobile armrest in the embodiment of the present invention is shown in FIG. Figure 2 ;

[0023] Figure 4 is a schematic structural diagram of an epidermal fixing device in an embodiment of the present invention;

[0024] Figure 5 is a schematic structural diagram of a pneumatic positioning unit in an embodiment of the present invention;

[0025] Figure 6 is a schematic structural diagram of an edge binding device in an embodiment of the present invention;

[0026] Figure 7 is a structural schematic diagram of a hand-like grasping hemming mechanism in an embodiment of the present invention;

[0027] Figure 8 It is a structural schematic diagram of the automobile armrest frame of the present invention;

[0028] Fig. 9 yes Figure 8 Enlarged schematic diagram of the transition edge. DETAILED DESCRIPTION

[0029] In order to make the technical means, creative features, objectives and effects of the present invention easy to understand, the following embodiments are combined with the accompanying drawings to specifically illustrate the composite edge wrapping equipment for automobile armrests of the present invention.

[0030] Figure 1 It is a structural block diagram of the glue spraying and edging system for automobile armrests in an embodiment of the present invention.

[0031] As shown in the figure, this embodiment provides a car armrest glue spraying and edging system 1000, including a glue spraying device 100, a car armrest composite edging device 200 and a control device 300. The control device 300 is used to control the operation of the glue spraying device 100 and the car armrest composite edging device 200, so that the surface processed by the glue spraying device 100 is transferred to the car armrest composite edging device 200 for processing at a constant interval. The transfer can be manual or automatic.

[0032] The glue spraying device 100 is used to spray hot melt glue on the inner surface of the cut skin mentioned in the background technology, and has a glue spraying control device 110. The glue spraying device 100 is a prior art, for example, the automobile interior door panel glue spraying device in the previously published Chinese invention patent application CN110947561A applied by the applicant is adopted, and on this basis, the bracket for fixing the automobile interior door panel in the placement part thereof is changed into a structure for fixing the skin. In addition, the glue spraying control device 110 is connected to the control device 300 in communication and operates under the control of the control device 300.

[0033] Figure 2 The three-dimensional structure diagram of the composite hemming equipment for the automobile armrest in the embodiment of the present invention is shown in FIG. Figure 1 ; Figure 3 The three-dimensional structure diagram of the composite hemming equipment for the automobile armrest in the embodiment of the present invention is shown in FIG. Figure 2 .

[0034] The automobile armrest composite hemming device 200 is used to adhere the skin with hot melt adhesive (layer) on the inner surface processed by the glue spraying device 100 to the automobile armrest frame 1, and hem the automobile armrest frame 1. Figure 1-3As shown, the automobile armrest composite edge wrapping device 200 includes a supporting mechanism 210 , a skin fixing device 220 , a frame fixing device 230 , a baking device 240 , an edge wrapping device 250 and an edge wrapping control device 260 .

[0035] The edge wrapping control device 260 is connected to the control device 300 in communication, and includes a first control unit 261 and a second control unit 262. The first control unit 261 is used to control the operation of the skin fixing device 220, the frame fixing device 230 and the baking device 240 under the control of the control device 300. The second control unit 262 is used to control the operation of the edge wrapping device under the control of the control device 300.

[0036] like Figure 2 , 3 As shown, the support mechanism 210 includes a lower support portion 211 and an upper support portion 212 connected together.

[0037] Figure 4 Schematic diagram of the structure of the epidermis fixing device in an embodiment of the present invention.

[0038] like Figure 4 As shown, the skin fixing device 220 is used to fix and position the skin, and includes a fixing frame (not shown in the figure), a contour mold 221, a pneumatic positioning unit 222 and a vacuum generator 223 (not shown in the figure). The fixing frame is installed on the lower support part 211.

[0039] The profiling mold 221 is fixedly arranged on the fixing frame, and has a shape matching the shape of the automobile armrest frame 1, and is used to fix the skin during the processing to prevent the skin from moving during the processing, so as to facilitate the smooth progress of the processing. The profiling mold 221 includes a first mold area 2211, a second mold area 2212, and a long side area 2213. A plurality of through hole groups 2214 are arranged on the first mold area 2211 and the second mold area 2212, and each through hole group 2214 includes 4-8 through holes 22141 arranged along a straight line.

[0040] The first mold area 2211 corresponds to the first epidermis area of ​​the epidermis, and the multiple through holes 22141 in the through hole group 2214 arranged on the first mold area 2211 are linearly distributed along the length direction of the profiling mold 221, and the multiple through hole groups 2214 are both arranged in rows and columns. The portion of the first mold area 2211 corresponding to the suture of the epidermis is not provided with through holes 22141. The second mold area 2212 corresponds to the second epidermis area of ​​the epidermis, and the multiple through holes 22141 in the through hole group 2214 arranged on the second mold area 2212 are linearly distributed along the length direction of the profiling mold 221, and the multiple through hole groups 2214 are arranged in rows. The long side area 2213 is provided with multiple through holes 2215 evenly distributed along its length direction.

[0041] The vacuum generator is fixedly arranged on the fixing frame, and is a vacuum pump, which is respectively connected to the through holes 22141 through vacuum pipes (not shown in the figure). When the vacuum pump evacuates the air in the vacuum pipes and through holes 22141, the through holes 22141 suck the skin tightly onto the contour mold 221.

[0042] Figure 5 Schematic diagram of the structure of the pneumatic positioning unit in an embodiment of the present invention.

[0043] like Figure 5 As shown, the pneumatic positioning unit 222 is fixedly arranged on the fixing frame, and has a positioning pin 2221 and a positioning pin driving cylinder 2222. The positioning pin 2221 matches the positioning hole of the epidermis, and is used to pass through the positioning hole so that the epidermis is positioned on the profiling mold 221. The positioning pin driving cylinder 2222 is used to drive the positioning pin 2221 to move down or up. When the positioning pin driving cylinder 2222 drives the positioning pin 2221 to rise, the positioning pin 2221 is in the positioning position. At this time, by placing the epidermis on the positioning pin, the epidermis can be positioned on the profiling mold 221, so that the first epidermis area of ​​the epidermis corresponds to the first mold area 2211, and the second epidermis area corresponds to the second mold area 2212. When the positioning pin driving cylinder 2222 drives the positioning pin 2221 to move down, it is convenient for the hemming device 250 to hem from above the positioning pin 2221.

[0044] The number of the pneumatic positioning units 222 is the same as the number of the positioning holes on the skin. A plurality of pneumatic positioning units 222 are arranged around the periphery of the contouring mold 221, and their distribution corresponds to the distribution of the positioning holes.

[0045] The pneumatic positioning unit 222 corresponding to the long side area 2213 is arranged below the through hole 2215 of the long side area 2213. When the positioning pin driving cylinder 2222 drives the positioning pins 2221 to rise, the positioning pins 2221 pass through and out of the through hole 2215, thereby reaching their positioning positions. The part of the positioning pins 2221 that passes through the through hole 2215 is used to position the epidermis. When the positioning pin driving cylinder 2222 drives the positioning pins 2221 to move downward, the top of the positioning pins 2221 is lower than the top of the through hole 2215.

[0046] like Figure 2 As shown, the frame fixing device 230 is installed on the upper support part 212, and is used to fix the automobile armrest frame 1, including a frame fixing unit (not shown in the figure) and a vertical driving unit (not shown in the figure). The frame fixing unit is installed on the vertical driving unit and is located directly above the contour mold 221, and is used to fix the automobile armrest frame 1 and move up and down under the drive of the vertical driving unit. The frame fixing unit is a prior art, such as a structure in which a positioning mold and a clamp are matched. The vertical driving unit is a prior art, such as a slide rail structure.

[0047] like Figure 3 As shown, the baking device 240 is installed on the lower support part 211, and is used to heat the hot melt adhesive on the car armrest frame 1 and the skin. The baking device 240 includes a heating unit 241 and a horizontal driving unit (not shown in the figure). The heating unit 241 includes a heating frame (not shown in the figure), an upper heating tube (not shown in the figure) and a lower heating tube (not shown in the figure). The heating frame is installed on the horizontal driving unit. The upper heating tube is installed on the heating frame, and is used to heat the car armrest frame 1 under the control of the first control unit 261; the lower heating tube is installed on the heating frame, and is used to melt the hot melt adhesive layer of the skin under the control of the first control unit 261. The horizontal driving unit is used to drive the heating frame of the heating unit 241 to move horizontally. When the heating frame is driven by the horizontal driving unit to move horizontally from the heating initial position to the heating position, the upper heating tube is located below the frame fixing unit and corresponds to the frame fixing unit, and the lower heating tube is located above the profiling mold 221 and corresponds to the profiling mold 221. The horizontal driving unit is a prior art, such as a slide rail structure.

[0048] Figure 6 Schematic diagram of the structure of the hemming device in the embodiment of the present invention.

[0049] like Figure 6As shown, the hemming device 250 is used to flip the skin adhered to the automobile armrest frame 1 from the outer surface of the automobile armrest frame 1 to the inner surface, and includes a hand-like grasping hemming mechanism 251 and a non-transition edge hemming mechanism 252. The hand-like grasping hemming mechanism 251 and the non-transition edge hemming mechanism 252 are both arranged on the outer side of the profiling mold 221.

[0050] Figure 7 It is a structural schematic diagram of a hand-like grasping hemming mechanism in an embodiment of the present invention.

[0051] like Figure 7 As shown in the figure, the hand-like grasping hemming mechanism 251 is used to hem the transition edge 2 of the automobile armrest frame 1, so the mechanism is also called a transition edge hemming mechanism. The number of transition edge hemming mechanisms 251 is at least 2, and they are respectively arranged at positions corresponding to the transition edge 2. Each transition edge hemming mechanism 251 includes a first flanging unit 2511, a first positioning and pressing unit 2512, and a first control unit (not shown in the figure),

[0052] The first flanging unit 2511 includes a first flanging block 25111 and a first flanging driving member 25112. The first flanging block 25111 is correspondingly arranged on the outer side of the transition edge 2, is arranged horizontally, is in an inverted L shape, matches the shape of the transition edge, and has a first upper surface 251111 and a first lower surface 251112 that are S-shaped in the vertical direction, and a first side surface 251113 that is S-shaped in the horizontal direction. The first flanging driving member 25112 is used to drive the first flanging block 25111 to move forward or backward or move downward or upward. The first flanging driving member 25112 is a cylinder driving member, and the cylinder driving member, for example, includes two cylinders, which respectively drive the first flanging block 25111 to move in the horizontal direction and the vertical direction.

[0053] The first positioning and clamping unit 2512 includes a first clamping block 25121 and a first clamping driving member 25122. The first clamping block 25121 is rotatably connected to the first flanging block 25111 via a rotating shaft, so that the first clamping block 25121 can rotate relative to the first flanging block 25111, and can move forward or backward or move downward or rise together with the first flanging block 25111. The first clamping block 25121 is in an inverted L-shape, and has a clamping lower surface 251211 that matches the shape and size of the first upper surface 251111. The first clamping driving member 25122 is used to drive the first clamping block to rotate forward or backward by a predetermined angle. The first clamping driving member 25122 is a cylinder driving member.

[0054] The first upper surface 251111, the first lower surface 251112, the first side surface 251113 and the pressing lower surface 251211 are all smooth surfaces.

[0055] The first control unit is in communication connection with the second control unit 262, and is used to control the first pressing driving member 25122 to drive the first pressing block 25121 to rotate forward or backward by a predetermined angle under the control of the second control unit 262. When the first pressing block 25121 rotates forward by a predetermined angle, the pressing lower surface 251211 presses the epidermis onto the first upper surface 251111 in a predetermined state. The predetermined state is a state in which the first pressing block 25121 and the first flange block 25111 can both drive the epidermis to move and slide relative to the epidermis.

[0056] The first control unit is also used to control the first flanging driving member 25112 to drive the first flanging block 25111 to move forward or backward or rise or move downward under the control of the second control unit 262. When the first flanging block 25111 moves forward, the first flanging block 25111 turns the skin from the outer surface of the automobile armrest frame 1 to the inner surface; when the first flanging block 25111 moves downward, the first flanging block 25111 makes the skin cover the inner surface of the automobile armrest frame 1.

[0057] like Figure 6 As shown, the non-transition edge hemming mechanism 252 is used to hem the non-transition edge 3 of the automobile armrest frame 1. There are multiple non-transition edge hemming mechanisms 252, which are respectively arranged at positions corresponding to the non-transition edges 3. Each non-transition edge hemming mechanism 252 includes a second flanging unit 2521 and a first control unit (not shown in the figure).

[0058] The second flanging unit 2521 includes a second flanging block 25211 and a second flanging driving member 25212. The second flanging block 25211 matches the shape of the non-transition edge and is in an inverted L shape. The second flanging driving member 25212 is used to drive the second flanging block 25211 to move forward or backward or rise or move downward. The second flanging driving member 25212 is a cylinder driving member.

[0059] The second control unit is in communication connection with the second control unit 262, and is used to control the second flanging driving member 25212 to drive the second flanging block 25211 to move forward, backward, upward, or downward under the control of the second control unit 262. When the second flanging block 25211 moves forward, the second flanging block 25211 flips the skin from the outer surface of the automobile armrest frame 1 to the inner surface; when the second flanging block 25211 moves downward, the second flanging block 25211 makes the skin cover the inner surface of the automobile armrest frame 1.

[0060] The first control unit 261 controls the operation of the skin fixing device 220, the frame fixing device 230 and the baking device 240 under the control of the control device 300, so that the process of sticking the skin with the hot melt adhesive (layer) on the inner surface to the automobile armrest frame 1 includes the following steps:

[0061] In step S1-1, the first control unit 261 controls the positioning needle driving cylinder 2222 to drive the positioning needle 2221 to rise from its initial position to the positioning position, and then enters step S1-2.

[0062] Step S1-2, align the positioning hole of the skin with the positioning pin 2221, and place the skin with the back side facing upward on the contour mold 221 and the positioning pin 2221. And, fix the automobile armrest frame 1 on the frame fixing unit with the surface (outer surface) to which the skin is to be attached facing downward. Then proceed to step S1-3.

[0063] In step S1-3, the first control unit 261 controls the vacuum generator to evacuate the space so as to absorb the decorative fabric onto the contoured mold 221. Then, the process proceeds to step S1-4.

[0064] In step S1-4, the first control unit 261 controls the vertical driving unit to drive the frame fixing unit to move downward from its initial position to the heating position, and controls the horizontal driving unit to drive the heating unit 241 to move horizontally from the heating initial position to the heating position. Then, step S1-5 is entered.

[0065] Step S1-5, the first control unit 261 controls the upper heating tube to heat the automobile armrest frame 1, and controls the lower heating tube to heat the hot melt adhesive layer of the surface fixed on the contour mold 221. Then enter step S1-6.

[0066] In step S1-6, the first control unit 261 controls the horizontal driving unit to drive the heating unit 241 to retreat to the initial heating position, and controls the upper heating tube and the lower heating tube to stop heating. Then, the process proceeds to step S1-7.

[0067] Step S1-7, the first control unit 261 controls the vertical driving unit to drive the frame fixing unit to move downward from the heating station to the pasting station, so that the automobile armrest frame 1 is pressed tightly against the skin. Then, step S1-8 is entered.

[0068] In step S1-8, the first control unit 261 controls the positioning pin driving cylinder 2222 to drive the positioning pin 2221 to return from its positioning position to its initial position. At this time, the hemming device 250 operates to flip the skin at the edge of the automobile armrest frame 1 and press it to the inner surface of the automobile armrest frame 1. Then enter step S1-9.

[0069] In step S1-9, the first control unit 261 controls the vacuum generator to stop vacuuming, and then enters step S1-10.

[0070] Step S1-10, the first control unit 261 controls the vertical driving unit to drive the frame fixing unit to rise from the pasting station back to its initial station, and then enters step S1-11.

[0071] Step S1-11, removing the automobile armrest frame 1 that has been pasted and hemmed (processed) from the frame fixing unit, thus completing a round of pasting and hemming processing.

[0072] The second control unit 262, under the control of the control device 300, controls the transition edge hemming mechanism 251 through the first control unit to hem the transition edge 2 of the automobile armrest frame 1, and the process includes the following steps:

[0073] Step S2-1, the first control unit controls the first pressing driving member 25122 to drive the first pressing block 25121 to rotate forward by a predetermined angle, so that the pressing lower surface 251211 presses the epidermis onto the first upper surface 251111 in a predetermined state, and then enters step S2-2. The predetermined state is a state in which the first pressing block 25121 and the first flange block 25111 can both drive the epidermis to move and slide relative to the epidermis.

[0074] Step S2-2, the first control unit controls the first flanging driving member 25122 to drive the first flanging block 25111 to rise from the initial position at a first predetermined speed to the first flanging position, and then enters step S2-3. When the first flanging block 25111 is at the first flanging position, the first lower surface 251112 is higher than the upper surface of the transition edge 2 by a predetermined height, and the predetermined height is less than or equal to the thickness of the epidermis.

[0075] Step S2-3, the first control unit controls the first flanging driving component 25122 to drive the first flanging block 25111 to move forward from the first flanging position at a second predetermined speed to the second flanging position, so that the epidermis is flipped from the outer surface of the automobile armrest frame 1 to the inner surface, and then enters step S2-4.

[0076] Step S2-4, the first control unit controls the first flanging driving component 25122 to drive the first flanging block 25111 to move downward from the second flanging position at a third predetermined speed, so that the skin covers the inner surface of the automobile armrest frame, and then enters step S2-5.

[0077] In steps S2-S4, the first control unit further controls the first pressing block 25121 to maintain a state in which the skin is pressed against the first upper surface 251111 in a predetermined state. The first predetermined speed, the second predetermined speed, and the third predetermined speed are equal.

[0078] Step S2-5, the first control unit controls the first flanging driving member 25122 to drive the first flanging block 25111 to return to the initial position through ascending, retreating, and downward movement in sequence. The return speed of the first flanging block 25111 is greater than or equal to the first predetermined speed, preferably greater than the first predetermined speed.

[0079] The second control unit 262, under the control of the control device 300, controls the non-transition edge hemming mechanism 252 through the second control unit to hem the non-transition edge 3 of the automobile armrest frame 1, and the process includes the following steps:

[0080] Step S3-1, the second control unit controls the second flanging driving member 25212 to drive the second flanging block 25211 to move forward from its initial position, so that the skin is flipped from the outer surface of the automobile armrest frame 1 to the inner surface, and then enters step S3-2.

[0081] Step S3-2, the second control unit controls the second flanging driving member 25212 to drive the second flanging block 25211 to move downward, so that the skin covers the inner surface of the automobile armrest frame, and then enters step S3-3.

[0082] Step S3-3, the second control unit controls the second flanging driving member 25212 to drive the second flanging block 25211 to return to its initial position through ascending and retreating actions in sequence.

[0083] Functions and Effects of the Embodiments

[0084] According to the automobile armrest composite edging equipment involved in this embodiment, because it includes a skin fixing device, a frame fixing device, a baking device and an edging device, the skin can be sprayed with glue through the glue spraying equipment, and the automobile armrest composite edging equipment can be used to stick the skin with hot melt adhesive on the inner surface to the automobile armrest frame, and the automobile armrest frame can be edged, and the operation of the glue spraying equipment and the automobile armrest composite edging equipment can be controlled by the control device, that is, the system can realize automatic glue spraying, automatic skin sticking and edging processing, thereby improving the quality stability and efficiency of automobile armrest processing.

[0085] In addition, because the epidermis fixing device in this embodiment includes a profiling mold, a pneumatic positioning unit and a vacuum generator, the profiling mold is provided with a plurality of through holes, and the pneumatic positioning unit has a positioning needle that matches the positioning hole on the epidermis, the epidermis can be initially positioned by the positioning needle and the positioning hole, so that the epidermis can be accurately placed on the positioning needle and the profiling mold, and then the through hole is vacuumed by the vacuum generator so that the epidermis is adsorbed and tightly sucked on the profiling mold. Therefore, the epidermis fixing device can achieve rapid and accurate positioning of the epidermis, and the device also has the advantages of simple structure and easy automatic control.

[0086] Furthermore, because the contoured mold in this embodiment includes a first mold area, the first mold area corresponds to the first skin area of ​​the skin, and the multiple through holes arranged on the first mold area are distributed linearly along the length direction of the contoured mold, it is convenient to realize that the part corresponding to the stitching on the first mold area is not provided with through holes, thereby avoiding the influence of the stitching connection part on the skin during subsequent vacuum positioning.

[0087] Furthermore, because the contoured mold in this embodiment also includes a second mold area, the multiple through holes in the through hole group on the second mold area are distributed linearly along the width direction of the contoured mold, and the distribution direction is perpendicular to the through hole arrangement direction in the through hole group on the first mold area. The different arrangements of the two mold areas during vacuum extraction can enable the entire contoured mold to achieve a better vacuum positioning effect on the epidermis.

[0088] Furthermore, because the number of the pneumatic positioning units in this embodiment is the same as the number of the positioning holes on the skin and they are arranged correspondingly, good positioning of the skin edge can be achieved.

[0089] Furthermore, because the pneumatic positioning unit in this embodiment drives the positioning pin to move down and up through the cylinder, the positioning pin can only provide a positioning function during the process of pasting the skin, thereby not interfering with the subsequent hemming processing of the hemming device.

[0090] Furthermore, because a through hole is also provided on the long side area of ​​the contoured mold in this embodiment, when the cylinder drives the positioning needle to rise, the positioning needle passes through and out of the through hole, and the part of the positioning needle that passes through the through hole can position the epidermis. When the cylinder drives the positioning needle to move down, the top of the positioning needle is lower than the top of the through hole. In this way, when the hemming device performs hemming, although the edge of the epidermis is no longer positioned by the positioning needle, it can still be supported by the long side area of ​​the contoured mold, thereby achieving a better hemming effect.

[0091] Furthermore, because the hemming device in the present embodiment includes an hemming mechanism that simulates hand-like grasping and a non-transition edge hemming mechanism, the hemming mechanism that simulates hand-like grasping includes a flanging unit, a positioning and pressing unit and a first control unit, the flanging unit includes a pressing block and a pressing drive component, the positioning and pressing unit includes a pressing block and a pressing drive component, the first control unit can control the pressing drive component to drive the pressing block to rotate forward by a predetermined angle, so that the pressing lower surface presses the epidermis on the first upper surface in a predetermined state, and the predetermined state is a state in which the pressing block and the flanging block can both drive the epidermis to move and slide relative to the epidermis. In this way, when the flanging block moves forward at a second predetermined speed under the control of the first control unit, so that the epidermis is flipped from the outer surface of the automobile armrest frame to the inner surface, it can imitate the state of manual hemming in which the epidermis is tightened and slowly slides out while hemming, thereby preventing the occurrence of epidermis wrinkles and achieving high-quality hemming of the transition edge of the frame.

[0092] Likewise, when the flanging block performs an ascending motion at a first predetermined speed and a descending motion at a third predetermined speed under the control of the first control unit, the epidermis is also in a tight and slowly sliding out state.

[0093] Furthermore, the first control unit also controls the flanging driving component to drive the flanging block to rise at a first predetermined speed, so that the first lower surface is higher than a predetermined height of the upper surface of the transition edge, and the predetermined height is less than or equal to the thickness of the epidermis, so that when the epidermis is flipped from the outer surface of the automobile armrest frame to the inner surface, the flanging block presses the epidermis onto the automobile armrest frame, thereby achieving a better pasting and edging effect.

[0094] Furthermore, the first predetermined speed, the second predetermined speed and the third predetermined speed are equal and less than the return speed of the flanging block, which not only ensures the uniformity and consistency during flanging and achieves a good flanging effect, but also further shortens the return time and improves the processing efficiency.

[0095] Furthermore, the pressing block and the flanging block are rotatably connected via a rotating shaft, which has a simple structure and facilitates controlling the flanging block to rotate to a predetermined angle.

[0096] The above-mentioned embodiments are preferred examples of the present invention and are not intended to limit the protection scope of the present invention.

Claims

1. A composite hemming device for automobile armrests, used for pasting a skin with a hot melt adhesive layer on the inner surface onto an automobile armrest frame, and hemming the automobile armrest frame, wherein the automobile armrest frame comprises a transition edge, wherein the transition edge is narrowed from wide in the horizontal direction and gradually decreases in height in the vertical direction, and is characterized in that: include: Support mechanism; An epidermis fixing device, arranged on the supporting mechanism, for fixing the epidermis; A frame fixing device, arranged on the supporting mechanism and located above the surface fixing device, for fixing the frame of the automobile armrest; A baking device, arranged on the supporting mechanism, for melting the hot melt adhesive layer of the surface and heating the automobile armrest frame; and The hemming device is used to hem the automobile armrest frame. The epidermis fixing device comprises a fixing frame and a contour mold fixedly arranged on the fixing frame, a pneumatic positioning unit and a vacuum generator. The contour mold has a shape matching the shape of the automobile armrest frame and is used to position the epidermis. The contour mold is provided with a plurality of through holes. The pneumatic positioning unit has a positioning needle matching the positioning hole on the epidermis. The positioning needle is used to pass through the positioning hole so that the epidermis is positioned on the contour mold. The vacuum generator is connected to the plurality of through holes respectively and is used to evacuate the through holes so that the epidermis is adsorbed and tightly sucked on the contour mold. The hemming device comprises a hand-like grasping hemming mechanism for hemming the transition edge, the hemming mechanism comprises a first flanging unit, a first positioning and pressing unit, and a first control unit. The first flanging unit comprises: A first flange block, which is arranged correspondingly on the outer side of the transition edge, is arranged horizontally, is in an inverted L shape, matches the shape of the transition edge, and has a first upper surface and a first lower surface that are S-shaped in the vertical direction, and a first side surface that is S-shaped in the horizontal direction; and The first flanging driving component is used to drive the first flanging block to move forward, backward, downward or upward, and includes two driving cylinders, which respectively drive the first flanging block to move in the horizontal direction and the numerical direction. The first positioning and pressing unit comprises: A first pressing block, rotatably connected to the first flanging block, is in an inverted L-shape, and has a pressing lower surface matching the shape and size of the first upper surface; and a first pressing driving member, for driving the first pressing block to rotate forward or backward by a predetermined angle; The first control unit controls the first clamping drive component to drive the first clamping block to rotate forward by the predetermined angle, so that the clamping lower surface presses the epidermis onto the first upper surface in a predetermined state, and the predetermined state is a state in which the first clamping block and the first flange block can both drive the epidermis to move and slide relative to the epidermis.

2. The composite hemming equipment for automobile armrests according to claim 1 is characterized in that: in, The skin comprises a first skin region, a suture extending in a length direction is arranged on the first skin region, and the contour mold comprises a first mold region corresponding to the first skin region. The plurality of through holes are arranged in a through hole group, the plurality of through holes in the through hole group arranged on the first mold base area are distributed linearly along the length direction of the contoured mold base, the plurality of through hole groups are distributed in rows or columns, and the portion of the first mold base area corresponding to the stitching line is not provided with the through holes.

3. The composite hemming equipment for automobile armrests according to claim 2 is characterized in that: in, The skin also includes a second skin area, and the contour mold also includes a second mold area corresponding to the second skin area. The plurality of through holes in the through hole group arranged on the second mold area are distributed in a linear manner along the width direction of the contoured mold, and the plurality of through hole groups are distributed in a row.

4. The composite hemming equipment for automobile armrests according to claim 1 is characterized in that: in, The pneumatic positioning unit further comprises a cylinder, and the cylinder drives the positioning needle to move downward or upward.

5. The composite hemming equipment for automobile armrests according to claim 4 is characterized in that: in, The profiling mold is also provided with a through hole, and the positioning pin corresponds to the through hole. When the cylinder drives the positioning needle to rise, the positioning needle passes through and out of the through hole, and the portion of the positioning needle that passes through the through hole is used to position the epidermis. When the cylinder drives the positioning pin to move downward, the top of the positioning pin is lower than the top of the through hole.

6. The composite hemming equipment for automobile armrests according to claim 1 is characterized in that: in, The first control unit also controls the first flanging driving component to drive the first flanging block to move forward at a second predetermined speed, so that the skin is flipped from the outer surface of the automobile armrest frame to the inner surface.

7. The composite hemming equipment for automobile armrests according to claim 6 is characterized in that: in, The first control unit further controls the first flanging driving member to drive the first flanging block to ascend at a first predetermined speed, so that the first lower surface is higher than the upper surface of the transition edge by a predetermined height. The first control unit also controls the first flanging driving member to drive the first flanging block to move downward at a third predetermined speed, so that the skin covers the inner surface of the automobile armrest frame.

8. The composite hemming equipment for automobile armrests according to claim 7 is characterized in that: in, The first predetermined speed, the second predetermined speed and the third predetermined speed are equal, and the predetermined height is less than or equal to the thickness of the epidermis.

9. The composite hemming equipment for automobile armrests according to claim 6, characterized in that: in, The first pressing block and the first flanging block are rotatably connected via a rotating shaft, and the first pressing driving component and the first flanging driving component are both cylinder driving components.

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