JPH08150660A - Method and apparatus for involving terminal of skin material - Google Patents

Abstract

PURPOSE: To provide a skin material terminal involving apparatus having a simple structure and short in cooling time. CONSTITUTION: A lower mold 21 set in such a state that terminal part 14 of a skin material 13 is extended to the outer peripheral edge of a core material 12, an upper mold 30 pressing the core material 12 and the skin material 13 and bending the terminal part 14 of the skin material 13, a block 33 possible to advance and retreat involving the terminal part 14 of the skin material 13 toward the rear surface of the core material 12, a nozzle 23 opened on the side of the terminal part 14 of the skin material 13 to eject hot air.cooling air and the hot air.cooling air generator connected to the nozzle 23 through a changeover valve are provided.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of winding a terminal of a skin material on an interior part of an automobile or the like and a winding device.

[0002]

2. Description of the Related Art A conventional method and apparatus for winding a terminal of a skin material will be described below. FIG. 8 is a perspective view of an automobile door trim, and FIG. 9 is a front view showing a schematic configuration of a conventional terminal winding device for a skin material.

Door trim 11 which is an interior part for automobiles
There is a laminated structure in which, for example, a skin material 13 made of PVC (polyvinyl chloride) with polypropylene foam is attached to the surface of a core material 12 of a PP (polypropylene) composite material containing a filler. The terminal portion 14 is rolled up along the periphery of the back surface of the core material 12 and welded to perform terminal treatment.

As a method of this terminal treatment, in a terminal winding device 1 as shown in FIG. 9, first, a door trim 11 in which a skin material 13 is adhered to the surface of a core material 12 formed into a required shape by a press molding method is used. The door trim 11 is fixed by setting it on the pedestal 2 and lowering the work holder 3.

Next, the hot air blower 4 mounted on a ram (not shown) descends and the hot air is blown onto the end portions 14 of the skin material 13 to heat them, and the back surface of the end portions 14 becomes molten. After the hot air blower 4 further rises, FIG.
As shown in (b), the clamp 5 moves to bend the terminal portion 14 and press it against the back surface side of the core material 12 for a predetermined time (about 1
Hold for 5 seconds and allow to cool naturally. Finally, the clamp 5 retracts, the work holder 3 rises, and the door trim 11 is taken out.

Further, as shown in FIG. 11 (a), the pedestal 2
Slide bar 6 that can move forward and backward and up and down along the outer circumference of
There is also a terminal winding device 10 in which the electric heating box 8 for holding the bar heater 7 is installed inside the pedestal 2 along the outer periphery of the pedestal 2 via a heat insulating material.

In this device 11, the door trim 11 is set on the pedestal 2 and the end portion 14 of the skin material 13 is extended on the upper surface of the slide bar 6. Next, the pressing pad 9 descends to hold the door trim 11, and the electrothermal box 8 descends to heat and melt while pressing the back surface side of the terminal portion 14. After that, as shown in FIG. 11B, the slide bar 6 advances after the pedestal 2 descends, bends the end portion 14 of the skin material 13 to the back surface side of the core material 12, and the slide bar 6 descends. The terminal portion 14 is pressed against the back surface side of the core material 12 and welded.

[0008]

However, in the above-mentioned conventional configuration, the heating device such as the hot air blower or the electric heating box is designed to move up and down, so that the structure is complicated and the cooling of the terminal portion after welding is performed. However, there is a problem in that it takes time because of natural cooling.

The present invention solves the above-mentioned problems of the prior art, and an object thereof is to provide a method of winding a terminal of a skin material having a simple structure and a short cooling time.

Another object of the present invention is to:
An object of the present invention is to provide a terminal winding device for a skin material having a simple structure and a short cooling time.

[0011]

In order to achieve the above-mentioned one object, a method of winding a terminal of a skin material according to the present invention is such that a peripheral end portion of a skin material integrally attached to a surface side of a core material is cored. In the terminal winding method of the skin material that is wound and adhered to the back side of the material,
The step of setting on the lower mold with the end portion of the skin material extended to the outer peripheral edge of the core material, and lowering the upper mold, and the end portion of the skin material by the bent portion provided on the outer peripheral edge of the upper mold. And the step of heating and melting the end portion of the skin material with a heating device, and advancing the block disposed on the outer periphery of the lower die to wind and weld the end portion of the skin material to the back surface side of the core material. It is characterized by comprising a step and a step of blowing cold air from a nozzle to cool the end portion of the skin material.

Further preferably, in the method of winding the end portion of the skin material according to the present invention, hot air is blown out from the nozzle for 10 to 15 seconds in the heating and melting by the heating device, and the surface temperature of the end portion of the skin material is 120 to 200 ° C. It is characterized by heating and melting.

Further, preferably, the method of winding the end portion of the skin material according to the present invention is characterized in that cold air is jetted from the nozzle for 5 to 10 seconds to cool the end portion of the skin material.

More preferably, in the method of winding the end portion of the skin material according to the present invention, after the end portion of the skin material is wound on the back surface side of the core material and welded, the upper die is lowered to form the skin with the upper die and the block. The feature is that the end portion of the material is pressed.

In order to achieve the above-mentioned other objects, a device for winding a terminal of a skin material according to the present invention comprises a lower die for setting the end portion of the skin material in a state of extending to the outer peripheral edge of the core material, and a core material. And the skin material and press the end portion of the skin material to bend, a block that can move forward and backward by winding the end portion of the skin material on the back side of the core material and weld it, and heat the end portion of the skin material It has a configuration including a heating device for melting, a nozzle that opens to the end portion side of the skin material and ejects wind, and a cold air generation device that is connected to the nozzle.

[0016] Preferably, in the end material winding device of the skin material of the present invention, the heating device is a hot air generating device connected to the nozzle through a switching valve.

Further, preferably, in the device for winding the end portion of the skin material of the present invention, the heating device is a bar heater which can move up and down.

Preferably, the device for winding the end of the skin material according to the present invention has a structure in which a bending plate for bending the end portion of the skin material is provided on the outer periphery of the upper die.

Further, preferably, the skin material end winding device according to the present invention has a structure in which the lower mold is provided with an air escape hole for communicating with a nozzle.

More preferably, the skin material terminal winding device of the present invention has a structure in which a smooth R portion is formed on the upper edge of the block.

[0021]

According to this method, the end portion of the skin material is heated by the heating device, the end portion of the skin material is cooled by ejecting the cool air from the nozzle, and the skin material is advanced by advancing the block arranged on the outer periphery of the lower die. Since the end portion of the above is wound and welded on the back surface side of the core material, the end portion of the skin material can be efficiently wound and welded with a simple structure.

With this structure, the end portion of the skin material can be easily rolled up and welded to the back surface side of the core material by the forward and backward movement of the block, and the nozzle is opened to the end portion side of the skin material. The structure is simple and the cooling efficiency is improved, and since the end portion of the skin material is forcibly cooled, the cooling time is shortened.

[0023]

An embodiment of the present invention will be described below with reference to the drawings. The same parts as those shown in the conventional example are designated by the same reference numerals.

FIG. 1 is a plan view of a terminal winding device for skin material according to the present invention, and FIG. 3 is a side view showing a schematic structure of the winding device. In the figure, 11 is a door trim, 12 is a core material, and 13 is a skin material.

Door trim 11 which is an interior part for automobiles
Is the skin material 13 on the surface of the core material 12 formed into the required shape.
It is generally configured by sticking together. In this embodiment, the core material 12 is made of a PP (polypropylene) composite resin containing a filler, and the skin material 13 is a PVC (vinyl chloride) resin sheet laminated with polypropylene foam. The portion 14 is wound and adhered along the peripheral edge of the back surface of the core material 12 and subjected to terminal treatment.

The terminal winding device 20 for the skin material 13 includes a lower mold 21 for setting the door trim 11, an upper mold 30 for pressing the door trim 11, and a plurality of molds along the outer periphery of the lower mold 21, as shown in FIG. Block 33 which is divided and arranged
Etc.

The lower die 21 is fixed to the base plate 22, and the size of the lower die 21 is such that the end portion 14 of the skin material 13 extends to the outer periphery of the lower die 21 and is wound on the back surface side of the core material 12. The size is set so that it can be welded. Further, the lower mold 21 is provided with a nozzle 23 for ejecting hot air or cold air, and when the door trim 11 is set on the lower mold 21, the nozzle 23 blows air near the end portion 14 of the skin material 13. It is open to the position. The nozzle 23 is connected to a hot / cold air generator 25 via a switching valve 24.
The 3rd exit passes through a wind passage 26, which will be described later, and a wind escape hole 27.
It leads to.

The upper die 30 is supported by a ram 31 which can move up and down, and the size of the upper die 30 is the end portion 14 of the skin material 13.
Is set so that it protrudes to the outer circumference. Further, the upper mold 30 is provided with a bending plate 32 that bends the end portion 14 of the skin material 13 so as to be perpendicular to the base plate 22 when the door trim 11 is pressed.

The block 33 is divided into a plurality of blocks, and the lower mold 2
It is arranged along the outer periphery of the No. 1 and is supported by a cylinder 37 via a reinforcing plate 36 so as to be able to move forward and backward. Further, a smooth R portion 34 is formed on the upper edge of the block 33, and the upper surface of the block 33 is such that when the door trim 11 is set on the lower mold 21 and the block portion 33 is moved forward, the end portion 14 of the skin material 13 is inserted into the core material 12. The height is set so that it can be rolled up on the back side of. When the block 33 moves forward, the front surface 3 of the block 33
It is positioned so that a wind passage 26 is formed between 3a and the lower mold 21.

Next, a method of winding the end portion 14 of the skin material 13 using the present device 20 will be described with reference to the drawings.

In FIGS. 3 and 4, the door trim 11 in which the skin material 13 is adhered to the surface of the core material 12 formed into a required shape by the press molding method is set on the lower mold 21, and the upper mold 30 is lowered. As a result, the door trim 11 is fixed between the upper and lower molds 21 and 30, and the end portion 14 of the skin material 13 protruding on the outer periphery of the upper mold 30 is bent by the bending plate 32 so as to be perpendicular to the base plate 22. To be

Next, as shown in FIGS. 5 and 6, the lower mold 21
Hot air is jetted from the nozzle 23 of 10 to 15 seconds to heat and melt the end portion 14 of the skin material 13 to a surface temperature of 120 to 200 ° C., and the block 33 is advanced to move the end portion 14 of the core material 12 by the upper surface of the block 33. Roll it up on the back side. Further, by lowering the upper mold 30, the terminal portion 14 is sandwiched between the upper mold 30 and the block 33, and the skin material 13 and the core material 1 are
Ensure welding with 2.

Then, cold air is blown from the nozzle 23 of the lower mold 21 for 5 to 10 seconds to cool the end portion 14 of the skin material 13 and bond it to the core material 12. At this time, the smooth R portion 34 of the block 33 spreads the cool air to the terminal portion 14 for efficient cooling, and further escapes through the wind passage 26 formed between the front surface 33a of the block 33 and the lower mold 21. It is discharged from the hole 27 to the outside.

As described above, according to this embodiment, the lower mold 21
Is provided with a nozzle 23 for ejecting hot air or cold air. The nozzle 23 is connected to a hot air / cold air generator 25 via a switching valve 24, and an outlet of the nozzle 23 is provided with a wind passage 26.
Since it is communicated with the air escape hole 27 through the above, the terminal portion 14 of the skin material 13 can be efficiently heated and cooled in a short time with a simple structure.

A smooth R portion 3 is provided on the upper edge of the block 33.
4 is formed, and when the block 33 is further advanced, it is positioned so that the air passage 26 is formed between the front surface 33a of the block 33 and the lower mold 21, so that the cold air is directed toward the terminal portion 14 To be efficiently cooled, and further reliably discharged through the escape hole 27 through the wind passage 26. .

Further, a bending plate 3 for bending the terminal portion 14 of the skin material 13 when the door trim 11 is pressed against the upper mold 30.
Since the upper mold 30 is lowered, the end portion 14 of the skin material 13 is bent by the bending plate 32 so as to be perpendicular to the base plate 22 since the second mold 2 is attached.

Further, the block 33 is moved forward to move to the block 3
3 After the terminal portion 14 is wound on the back surface side of the core material 123 by the upper surface, the upper mold 30 is further lowered to sandwich the terminal portion 14 between the upper mold 30 and the block 33, and the skin material 13 and the core material 12 It is possible to ensure welding with.

Further, as shown in FIG. 7, a rod heater 38 which is vertically movable near the front end of the slide surface 35 of the block 33.
May be provided, and the end portion 14 of the skin material 13 may be heated and melted by raising it to the vicinity of the outlet of the nozzle 23 of the lower mold 21.

[0039]

INDUSTRIAL APPLICABILITY As described above, the present invention provides a method for winding a terminal of a skin material, in which a peripheral edge portion of the skin material integrally attached to the front surface side of the core material is wound around and bonded to the back surface side of the core material. The step of setting on the lower mold with the end portion of the skin material extended to the outer peripheral edge of the core material, and lowering the upper mold, and the end portion of the skin material by the bent portion provided on the outer peripheral edge of the upper mold. And the step of heating and melting the end portion of the skin material with a heating device, and advancing the block disposed on the outer periphery of the lower die to wind and weld the end portion of the skin material to the back surface side of the core material. The heating device melts the end portion of the skin material by heating and melting the end portion of the skin material by ejecting cold air from the nozzle, and the end portion of the skin material is ejected from the nozzle. Cools the block, and advances the block placed on the outer periphery of the lower mold. Thus since the welding winding terminal portion of the skin material to the back surface side of the core material allows entrainment welded efficiently skin material terminal portion with a simple structure.

Further, according to the present invention, the lower die is set in a state where the end portion of the skin material is extended to the outer peripheral edge of the core material, and the upper portion for pressing the core material and the skin material and bending the end portion of the skin material. A mold, a block that can move forward and backward by winding the end portion of the skin material on the back side of the core material and welding, a heating device that heats and melts the end portion of the skin material, and a wind that opens at the end portion of the skin material. By providing a nozzle for ejecting the nozzle and a cool air generator connected to the nozzle, the end portion of the skin material can be easily rolled up and welded to the back surface side of the core material by the forward and backward movement of the block, and the nozzle is Since the end portion of the skin material is opened, the structure is simple and the cooling efficiency is improved, and the end portion of the skin material is forcibly cooled, so that the cooling time is shortened.

[Brief description of drawings]

FIG. 1 is a perspective view of a door trim to which an embodiment of the present invention is applied.

FIG. 2 is a plan view of the terminal winding device for the skin material in the embodiment of the present invention.

FIG. 3 is a partial front view of the winding device.

FIG. 4 is a front view of a main part of the winding device.

FIG. 5 is a process explanatory view of the method of winding the end of the same skin material.

FIG. 6 is an explanatory view of a main part process of a method of winding the end of the skin material.

FIG. 7 is a front view of a main part of another end winding device for a skin material according to the present invention.

FIG. 8 is a perspective view of a vehicle door trim.

FIG. 9 is a partial front view of a conventional terminal winding device for a skin material.

FIG. 10 (a) is a process explanatory view of the same skin material before the winding in the terminal winding method. (B) It is process explanatory drawing after the winding of the terminal winding method of the same skin material.

FIG. 11 (a) is a process explanatory diagram of another conventional method of winding the end of the skin material before winding. (B) It is process explanatory drawing after the winding of the other conventional terminal winding method of the skin material.

[Explanation of symbols]

 11 Door Trim 12 Core Material 13 Skin Material 14 Terminal Part 20 Terminal Rolling-In Device 21 Lower Die 23 Nozzle 24 Switching Valve 25 Hot / Cold Air Generator 27 Escape Hole 30 Upper Die 32 Bending Plate 33 Block 34 R Part

Claims (10)

[Claims] 1. A method of winding a terminal portion of a skin material, wherein a peripheral edge portion of a skin material integrally attached to a front surface side of the core material is rolled into and bonded to a back surface side of the core material, wherein a skin material is provided on an outer peripheral edge of the core material. And a step of bending the end portion of the skin material by the bending portion provided on the outer peripheral edge of the upper mold while lowering the upper mold with the terminal part of the upper part extended, and a heating device. The step of heating and melting the end of the skin material by the following, the step of winding and welding the end of the skin material to the back side of the core material by advancing the block arranged on the outer periphery of the lower mold, and blowing cold air from the nozzle And a step of cooling the end portion of the skin material. 2. The end of the skin material according to claim 1, wherein in the heating and melting by the heating device, hot air is jetted from the nozzle for 10 to 15 seconds to heat and melt the end portion of the skin material to a surface temperature of 120 to 200 ° C. How to get involved. 3. The method of winding the end portion of the skin material according to claim 1, wherein cold air is jetted from the nozzle for 5 to 10 seconds to cool the end portion of the skin material. 4. The skin according to claim 1, wherein after the end portion of the skin material is wound on the back surface side of the core material and welded, the upper die is lowered and the end portion of the skin material is pressed by the upper die and the block. Method of winding the end of material. 5. A lower mold for setting the end portion of the skin material in a state where the end portion of the skin material is extended to the outer peripheral edge of the core material, and an upper die for pressing the core material and the skin material and bending the end portion of the skin material. A block that can move forward and backward by winding and welding the end part of the skin material on the back side of the core material, a heating device that heats and melts the end part of the skin material, and blows air by opening at the end part side of the skin material A terminal winding device for a skin material, comprising a nozzle and a cool air generator connected to the nozzle. 6. The end-winding device for the skin material according to claim 5, wherein the heating device is a hot air generating device connected to the nozzle through a switching valve. 7. The end winding device for the skin material according to claim 5, wherein the heating device is a vertically movable rod heater. 8. The end material winding device for a skin material according to claim 5, wherein a folding plate for bending the end portion of the skin material is provided on the outer periphery of the upper mold. 9. The end winding device for a skin material according to claim 5, wherein the lower mold is provided with a wind escape hole communicating with the nozzle. 10. The end winding device for a skin material according to claim 5, wherein a smooth R portion is formed on an upper edge of the block.