JPH05111956A - Rolling-in method of end section of laminated material - Google Patents

Abstract

PURPOSE:To decrease mandays and facilities by diminishing the number of manufacturing processes, obviate special adhesives for sticking end sections and reduce the manufacturing cost by conducting processes such as the molding of a laminated material before the end section is rolled in, trim, piercing, etc., together regarding a base material and a skin. CONSTITUTION:When the end section of a laminated material 5 with a base material 6 and a skin 3 stuck to the base material 6 is rolled in so that the base material is positioned on the inside, the base material 6 is composed of a thermoplastic material, and a section inner than the rolled-in end section of the laminated material 5 is pushed by a guide member 23 while only the base material 6a section of the end section is heated and softened. The base material 6a of the end section and the skin 3a are positioned along the guide member 23, bent together so that the base material 6 is located on the inside, the guide member 23 is retreated, the base material 6a of the end section and the skin 3a are further rolled in, and the softened base material of the end section is welded to a section inner than the softened material 6a.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a winding method suitable for winding an end portion of a laminated material having a base material and a skin adhered to the base material so that the base material faces inward. It is a thing.

[0002]

2. Description of the Related Art Conventionally, as a method of winding the end portion of a laminated material as described above, for example, a molded ceiling 1 for an automobile shown in FIG.
The winding method used when manufacturing the is known. That is, a molded ceiling 1 for an automobile usually has a base material 2 made of a material such as corrugated board, as shown in FIG.
Since it is formed of the laminated material 4 including the skin 3 made of a material such as a synthetic resin adhered to it, the front and rear end portions of the molded ceiling 1 are preferably not covered with finishing parts. The winding part 1a is provided for the purpose of obtaining a good appearance,
This winding part 1a is a winding method in which the outer skin 3 at the end of the laminated material 4 is left as shown by the phantom line in FIG. 12 and the remaining outer skin 3 is wound so that the base material 2 is on the inside. Is formed by.

[0003]

However, since such a winding method is adopted, the conventional method for manufacturing the molded ceiling 1 is such that the base material 2 is formed along the roof panel of an automobile in the base material forming step. The base material 2 is formed into a cross-sectional shape, then, in a base material trim piercing step, a predetermined position of the base material 2 is perforated and the periphery of the base material 2 is cut into the contour shape of the molded ceiling 1, and then the skin attaching step. Then, the skin 3 is attached to the base material 2 to form the laminated material 4, and then, in the skin trim piercing step, the skin 3 is perforated and the periphery of the skin 3 is surrounded by the contour shape of the base material 2. Is cut into a contour shape in which the front and rear end portions are added with a winding allowance, and the outer skin 3 is left only on the front and rear end portions of the laminated material 4 as described above. After applying the adhesive to the part, wind the end part so that the base material 2 is on the inside. They crowded in pasted to the substrate 2, is performed in a manufacturing process consisting of five steps of, because of the large number of steps in this manufacturing step, the man-hour increase,
There is a problem in that the production cost increases because a press type equipment and other equipment must be prepared for each process, and a special adhesive is also required for attaching the end portion of the skin 3.

[0004]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a winding method that advantageously solves the above-mentioned problems, and the end winding method of a laminated material according to the present invention is a base material. And a skin adhered to the laminated material, when winding the end portion of the laminated material so that the base material is on the inner side, the laminated material is formed by using the base material as a thermoplastic material, and the wound end of the laminated material While pressing the guide member so as to expose the portion inside the portion so that the winding end is exposed along the bending position, the base material of the winding end is heated and softened, and then the base material of the winding end. And the outer skin along with the guide member, and the base member is bent together from the bending position so as to be the inside, and then the guide member is retracted, the end portion is further wound, the end portion Of the softened substrate of It is characterized in that the fusing on the substrate side.

[0005]

According to such a method, since the base material of the laminated material and the skin adhered to the laminated material are wound together, the steps such as molding of the laminated material and trim piercing before winding the ends are performed as the base material. Since it can be done together with the skin, the number of production steps can be reduced, which can reduce the number of man-hours and equipment, and the base material of the laminated material is a thermoplastic material, and the wound end portion is heat-welded. Since it is fixed by the above, a special adhesive for sticking the end portions is not required, and from these points, the production cost can be significantly reduced.

[0006]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a cross-sectional view showing an embodiment of the method of winding the end portion of the laminated material of the present invention, which is applied to the manufacture of a molded ceiling of an automobile similar to that shown in FIG. 11, and is shown in FIG. The same parts as are indicated by the same reference numerals. That is, reference numeral 1 in the figure shows a molded ceiling manufactured by using the method of this embodiment. The molded ceiling 1 extends along a roof panel 51 of an automobile as shown in FIG. The rear glass 52 and the windshield (not shown) have winding parts 1a at both ends respectively located near the windshield and are attached to the roof panel 51 by clips 53 provided on the back surface. Reference numeral 5 in the drawing denotes the molded ceiling 1 in the above embodiment.
The laminated material 5 used in the manufacturing of 1. is formed by adhering the skin 3 made of a material such as a synthetic resin to a base material 6 made of a thermoplastic material such as a thermoplastic resin.

In the method of this embodiment, however, when the molded ceiling 1 is manufactured using the above-mentioned laminated material 5, the laminated material 5 is first formed into a cross-sectional shape along the roof panel 51 in the molding step. The material 6 and the skin 3 are molded together.
At the time of this molding, preferably, as shown in FIG. 1B, the notch 6a is simultaneously press-molded at the bending position of the base material 6 to facilitate the later-described winding.

Next, here, in the trim piercing process,
The base material 6 and the skin 3 are perforated at predetermined positions of the laminated material 5, and the periphery of the laminated material 5 is
The base material 6 and the skin 3 are cut together into the contour shape of the molded ceiling with the winding margins at the front and rear ends added. Here, each of the molding step and the trim piercing step can be easily performed by using a press die.

Thereafter, in this embodiment, the front and rear ends of the laminated material 5 which has been formed, punched and contour-cut as described above are shown in FIG. 1 () by using a winding device as shown in FIGS. c)
The winding parts 1a are wound to form the winding parts 1a, respectively, and thereby the molded ceiling 1 is manufactured.

FIG. 2 is a front view showing a winding device used for carrying out the winding method of this embodiment, and FIG. 3 is a view of the winding device shown in FIG.
4 is a side view of the winding device, and FIG. 4 is a side view of the winding device.
And a frame-shaped fixed frame 9 fixed and supported above the base 7 by columns 8 that also serve as guide rails standing on the four corners of the base 7, and are stacked on the base 7. Material 5
The laminated material holding table 10 that holds the
The laminated material holding base 10 is fixedly mounted via a supporting base 11 having a, in which the laminated material holding base 10 is located on the left and right ends of the spacer 11a of the supporting base 11 in FIG. 2 and extends in the vertical direction in FIG. It consists of two blocks 12 having outwardly curved sides and a frame 13 connecting the blocks 12, and the two blocks 12 correspond to the front and rear ends of the molded ceiling as shown in FIG. Protruding strips 12a curved from the outside near the front and rear ends of the laminated material 5
By closely contacting the inner side surfaces of these with the front and rear ends thereof in contact with the slightly curved upper surfaces from below, it is possible to hold the portions from the front and rear ends thereof to a position slightly closer to the center thereof. The frame 13 can hold the central portion of the laminated material 5 by closely contacting the curved upper surface of the laminated material 5 from below.

Further, the winding device here is provided with two large and small elevating frames, a nozzle elevating frame 14 and a guide plate elevating frame 15, above the laminated material holding base 10, and the larger elevating frame. Sliders 16 are provided at the four corners of the nozzle elevating frame 14 so as to be fitted to the columns 8, and at the center of the nozzle elevating frame 14, nozzles are provided upright on the center of the fixed frame 9. The piston rod of the lifting cylinder 17 is connected, whereby here its nozzle lifting frame 14
Can be moved up and down in a horizontal state based on the operation of the nozzle elevating cylinder 17 under the guidance of the support column 8.

The nozzle elevating frame 14 is located above the front and rear ends of the laminated material 5 on the laminated material holding base 10 (the right end portion in FIG. 2 is the front end portion and the left end portion is the rear end portion). To
Two hot-air nozzles 19 each having a downwardly-directed outlet that is curved following the front and rear ends of the laminated material 5 and having three heaters 18 at the top are fixed, and the heaters 18 are not shown. It is connected via a flexible duct to the air outlets of the two high-pressure air blowers 20 provided on the fixed frame 9, whereby here the hot air nozzles 19 are moved up and down by the nozzle elevating frame 14. ,
It is possible to move up and down between the ascending limit position close to the fixed frame 9 shown in FIG. 2 and the descending limit position close to the front and rear ends of the laminated material 5 on the laminated material holding base 10, and from the high-pressure blower 20. The high-pressure air to be supplied is heated by the heater 18 to form hot air, and the hot air is located at the lower limit position of the hot air nozzle 19
The air can be blown to the vicinity of the front and rear ends of the laminated material 5 on the laminated material holding base 10 from the blowout port.

On the other hand, piston rods of four guide plate elevating cylinders 21 erected downward on the fixed frame 9 are coupled to the four corners of the guide plate elevating frame 15 which is the smaller elevating frame. Therefore, here, the guide plate elevating frame 15 is shown in the ascending limit position shown by the phantom line in FIG. 2 and the solid line in the figure while keeping the horizontal state based on the synchronous operation of the four guide plate elevating cylinders 21. It can be raised and lowered to and from the lower limit position.

And the guide plate lifting frame 15
The guide plate advancing and retracting cylinder 22 is
Two pieces are provided above the two blocks 12 of the ten, and horizontally fixed to the outside of the laminated material 5 on the laminated material holding base 10 in the front-back direction (left and right direction in FIGS. 2 and 3). The guide rods of the guide plate advancing / retreating cylinders 22 are respectively coupled with two guide plates 23 each having a curved shape as a guide member, following the front and rear ends of the laminated material 5, respectively. By moving the guide plate elevating frame 15 up and down, the guide plates 23 are moved between the ascending limit position near the fixed frame 9 and the descending limit position near the front and rear ends of the laminated material 5 on the laminated material holding base 10. The laminated material 5 can be moved forward and backward in accordance with the operation of the guide plate advancing / retreating cylinder 22.

The guide plate elevating frame 15 is provided with a frame for preventing lifting and displacement during winding.
A plurality of laminated material pressing pads 24 for pressing and fixing the laminated material 5 on the laminated material holding base 10 to the laminated material holding base 10 are also provided.

Further, the winding device here includes a winding mechanism 25 along the left and right end portions of the support base 11 and the side portions of the block 12 facing outward, and the winding mechanism 25 is shown in FIG.
Further, as shown in FIG. 5, a plurality of main cylinders 27 whose rear end is swingably supported on the base 7 via pins 26,
The piston rods of the main cylinders 27 are swingably connected via pins 28 and the spacers 11 of the support base 11 are connected.
a plurality of connecting plates 30 swingably supported on the side portions of a via pins 29, and a plurality of connecting plates 30 whose swinging ends are swingably supported on the connecting plates 30 via pins 31. A guide sleeve is attached to the sub-cylinder 32 and the connecting plate 30 so as to correspond to each sub-cylinder 32.
An elevating rod 35 which is supported by 33 so as to be able to ascend and descend and is always urged downward by a spring 34 toward the base 7.
And a plurality of winding pieces 36 each having a tip portion 36a having an L-shaped cross section arranged along the curved ridge 12a of the block 12 and bulging toward the ridge 12a as shown in FIG. And each of the sub-cylinders 32 has a piston rod and a corresponding lifting rod 35 at the tip thereof.
The bases 36b of the are connected to each other via a pin 37 and a pin 38 so as to be swingable. , The tip end 36a is swung around the pin 29 so that the tip end 36a crosses the protrusion 12a, and further, based on the synchronous operation of the plurality of sub cylinders 32, the winding pieces 36 are attached to the protrusion 13a.
It can be swung around the pin 38 that rises against the tensile force of the spring 34 so as to enter the back side of the spring.

In addition to this winding device, an operation panel 3 for inputting commands such as starting and stopping the device and setting working conditions
9. A safety net 40 that surrounds the three sides to protect the worker and a sensor 41 that detects the worker's arm and the like when the laminated material 5 is carried in and out of the device to prevent malfunction of the device are respectively provided. ..

In the winding device constructed as described above, the laminated material 5 which is formed, punched and contour-cut as described above is shown in FIGS. 5 to 10 and described below.
The front and rear ends of the are wound.

That is, here, as shown in FIG. 5, an operator places the laminated material 5 on the laminated material holding table 10 with the skin 3 facing downward, and the vicinity of the front and rear ends of the laminated material 5 is the laminated material holding table.
When the apparatus is started after being placed so as to fit inside the curved ridge 12a of the block 12 of 10, when the nozzle elevating frame 14 descends, the hot air nozzles 19 near the front and rear ends of the laminated material 5. As the guide plate elevating frame 15 descends, the guide plate 23 and the guide plate advancing / retreating cylinder 22 descend to the vicinity of the front and rear ends of the laminated material 5, and then the guide plate 23 operates by the guide plate advancing / retreating cylinder 22. As shown by the arrow B in FIG. 6, the laminated material 5 is moved forward and backward to the inside of the base material 6b and the outer skin 3a, and the front and rear end portions of the base material 6b and the outer skin 3a form the notches 6a. It is pressed so as to be exposed along the provided bending position, and then the hot air nozzle 19 heats only the upwardly exposed base material 6b portion of its front and rear end portions with hot air to soften it.

Next, here, while the hot air nozzle 19 is raised to the above-mentioned upper limit position by the elevation of the nozzle elevating frame 14, the operation of the main cylinder 27 of the winding mechanism 25 causes the above-mentioned many winding pieces 36 to move toward Their tips as shown by arrow C
36a swings around the pin 29 so as to go over the protrusion 12a, so that the tip ends 36a of the base material 6b at the front and rear ends of the laminated material 5 and the outer skin 3a are indicated by arrows in FIG. 1 (b). As shown by D, the base plate 6b is bent along with the guide plate 23 so that the base member 6b is located inside, and the base plate 6b is bent in the bent position as shown in FIG.

Thereafter, here, the guide plate 23 is moved by the operation of the guide plate advancing / retreating cylinder 22 so that the arrow E in FIG.
As shown by, and then the auxiliary cylinder 32 of the winding mechanism 25.
The above-mentioned many winding pieces 36 are swung around the pins 38 so that their tip portions 36a enter the back side of the protrusion 12a as shown by the arrow F in FIG.
36a further wraps the base material 6b at the end portion and the outer skin 3a as indicated by an arrow G in FIG. 1 (b), and the softened base material 6b at the end portion is located inside the base material 6. Are welded to the portion to bring them into a wound state as shown in FIG.

During the above-mentioned winding, in this device, the pin 38 rises against the tensile force of the spring 34 due to the reaction force from the end of the laminated material 5 to the tip 36a of the winding piece 36. ,
Since the position of the swing center of the tip end portion 36a of the winding piece 36 is appropriately changed, the tip end portion 36a smoothly and smoothly enters the back side of the protrusion 12a, and the softened base material 6b at the end portion of the laminated material 5 Can be reliably welded to the portion of the base material 6 inside thereof.

By this operation, the winding of the front and rear end portions of the front and rear end portions of the laminated material 5 is completed, and thereafter, the guide plate elevating frame 15 is lifted as shown by an arrow H in FIG. 22 rises to the above-mentioned ascending limit position, and the cylinders 27, 32 of the winding mechanism 25 are operated in the reverse order of the above steps to wind the winding piece.
36 oscillates so as to come out of the protrusion 12a as shown by an arrow J in the figure, and it becomes possible to carry out the above-mentioned laminated material 5 whose front and rear end portions have been wound, and the operator can carry out the laminated material 5 After the unloading is completed, it waits for the next loading of the next laminated material 5 as it is.

As described above, according to the winding method of this embodiment, since the base material 6a at the front and rear ends of the laminated material 5 and the skin 3a attached to the base material 6a are wound together, the winding of the end portion is performed. Before forming the laminated material 5 and the process of trim piercing,
Since it is possible to perform the base material 6 and the skin 3 together, it is possible to reduce the man-hours and equipment by reducing the number of production steps, and moreover, the base material 6 of the laminated material 5 is incorporated as a thermoplastic material. Since the end portion 6a is fixed by heat welding, a special adhesive for sticking the end portion is not required, and the production cost can be significantly reduced from these points.

Further, according to the apparatus of this embodiment, only the portion of the base material 6b exposed from the guide plate 23 can be softened along the guide plate 23, so that the parting line at the time of winding can be made clear. it can.

Although the present invention has been described above based on the illustrated example, the present invention is not limited to the above example, and for example, the end portion of the laminated material may be heated by using an electric heater,
Further, the end portion of the laminated material after heating may be pressed inward by a pair of rollers moving from the central portion to the end portion and wound.
And, needless to say, the present invention can be applied to the end winding of products other than the molded ceiling as in the above example.

[0027]

As described above, according to the end winding method of the present invention, it is possible to perform the steps of forming the laminated material and trim piercing before the end winding is performed on the base material and the skin together. By reducing the number of production processes, it is possible to reduce the number of man-hours and facilities, and since the wound end is fixed by heat welding, a special adhesive for sticking the end is not required. It is possible to significantly reduce the production cost.

[Brief description of drawings]

FIG. 1 (a) is a cross-sectional view showing a molded ceiling of an automobile manufactured by an embodiment of the method for winding end portions of a laminated material of the present invention in a state of being mounted on a roof panel, and FIG. (C) is sectional drawing which shows the edge part of the laminated material before winding and after winding in the method of the Example, respectively.

FIG. 2 is a front view showing a winding device used for carrying out the winding method according to the embodiment.

FIG. 3 is a view of the winding device seen from the direction of arrow A in FIG.

FIG. 4 is a side view of the winding device.

FIG. 5 is an explanatory view showing a state of the winding device before the winding operation.

FIG. 6 is an explanatory view showing an operating state of the winding device at the time of heating the end portion of the laminated material based on the method of the embodiment.

FIG. 7 is an explanatory view showing an operating state of the winding device when the end portion of the laminated material is bent based on the method of the embodiment.

FIG. 8 is an explanatory view showing an operation state of the winding device when the guide plate is retracted based on the method of the embodiment.

FIG. 9 is an explanatory diagram showing an operating state of the winding device at the time of winding the end portion of the laminated material based on the method of the embodiment.

FIG. 10 is an explanatory diagram showing an operating state of the winding device after the end portion of the laminated material is wound up based on the method of the embodiment.

FIG. 11 is a plan view showing a molded ceiling for an automobile, which is an example of a product which is formed of a laminated material and whose ends are rolled up.

FIG. 12 is a cross-sectional view showing a method of winding the end portion of the conventional laminated material applied to the winding of the end portion of the molded ceiling.

[Explanation of symbols]

 3 Skin 3a End part 5 Laminated material 6 Base material 6b End part 12 Block 12a Protrusion 22 Guide plate advancing / retracting cylinder 23 Guide plate 25 Rolling mechanism 27 Main cylinder 32 Sub cylinder 36 Rolling piece

Claims (1)

[Claims] 1. When laminating an end portion of a laminated material including a base material and a skin adhered to the base material so that the base material is inside, the laminated material is formed by using the base material as a thermoplastic material. , While pressing the guide member so as to expose the portion of the laminated material inside the winding end portion so that the winding end portion is exposed along the bending position, heat the base material of the winding end portion to soften, The base material and the skin of the end portion to be rolled up are added to the guide member, and the base material is bent together from the bending position so that the base material is inside, and then the guide member is retracted, and then the end portion is removed. A method of winding an end portion of a laminated material, further comprising winding, and fusing the softened base material of the end portion to a base material inside thereof.