JPS6176330A - Roll-in method of skin of molded article and roll-in device thereof - Google Patents

Abstract

PURPOSE:To enable to engulf a roll-in part of skin to a terminal part of a base material, by making use of a phenomenon wherein a flexible tube is kept flattening gradually by pressing the same while the same is being widened in an elliptic state. CONSTITUTION:A molded article W consisting of a base material Wa laminated in a previous process and the skin Wb having a roll-in part Wc is set up so that a skin Wb side is positioned on a receiving part 5. Then a top force 7 and a press pad 11 are made to descend at the same time. Along with a matter that the receiving pad 5 of a bottom force 3 is pressed against a stationary die plate 1 side, the roll-in part Wc of the molded article W is stood up vertically and the inside surface of the lower part of a rubber tube 12 is brought into contact with the same. Simultaneously with the above, a rubber tube 12 is kept flattening while air in the rubber tube 12 is being discharged through a pipe 13 and the roll-in part Wc is being engulfed at the same time by the rubber tube 12. Then the rubber tube 12 is made to inflate by feeding the air to the rubber tube 12 through the pipe 13 when the top force 7 has been clamped with the bottom force 3. The rubber tube 12 is invaded into a gap part in a complicated shape according to the above matter and the roll-in part Wc is made to engulf completely in a terminal part of the base material Wa.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a skin wrapping method and a wrapping device for a molded article consisting of a base material and a skin, and more specifically, to a method for wrapping the skin of a molded product consisting of a base material and a skin, and more specifically, to This invention relates to a method for wrapping the skin of a molded product, in which a skin wrapping portion of the molded product in which the skin of the molded product is laminated is wrapped around the end portion of the base material using a flexible tube, and a device for wrapping the skin therein. .

, [Prior Art] Conventionally, after compression-molding a base material and a skin at the same time, the wound part of the skin is rolled into the end part of the base material to complete an automobile interior product, as shown in FIG. It is processed using a unique molding process.

FIG. 5 shows the processing steps for automobile interior products. First, in the processing step shown in FIG. 5(a), the mold 11
A pre-formed base material 12 is placed in the molded portion of the molded part, and a skin 13 coated with a warming adhesive is placed on this base material 12. Next, the mold 11 is closed and the base material 12 and the skin 13 are compression-molded.
2.13 is adhered to form a molded product 14.

Next, the molded product 14 is taken out from the mold 11, and only the ears 12a and 12b formed at both ends of the base material 12 are cut by the cutter 15 in the cutting step shown in ('b) in FIG. . At that time, the rolled-up portions 13a, 1 of the epidermis 13
3b is left as is without cutting.

Subsequently, the molded product 14 is conveyed to a peeling process shown in (C1) in FIG. and remove it.

Thereafter, the molded product 14 is conveyed to the rolling process shown in (dl) in FIG. 5, where an adhesive is applied to the rolled parts 13a and 13b of the skin 13, and the rolled parts 13a and 13b of the skin 13 are rolled and bonded to the end part of the base material 12.

As a result, an automobile interior product 14a is completed in which the wrapped portions 13a and 13b of the skin 13 are adhered to the end portion of the base material 12.

[Problem that the invention seeks to solve]

However, in such a method for molding automobile interior parts, the wrapped portions 13a and 13b of the skin 13 are formed on the base material 12.
Wrapping process (d) for wrapping and gluing the terminal part of
Because this is done manually, the skin folds 1
There is a problem that not only the work for winding up the ends of the base material 12 becomes complicated, but also the winding work takes a lot of time.

Therefore, this invention was made to solve the above-mentioned problems, and when the skin wrapping part of a molded product in which a base material and a skin having a wrapping part are laminated is rolled into the end part of the base material, By applying pressure to the flexible tube, it spreads into an elliptical shape and gradually collapses, thereby automating the wrapping of the skin wrapping around the end of the base material and reducing the wrapping work time. This makes shortening possible.

[Means for solving problems]

That is, in the skin wrapping method for a molded article according to the present invention, when wrapping the skin wrapping portion of the molded product in which the base material and the skin having the wrapping portion are laminated, into the end portion of the base material,
Set the skin side of the laminated molded product on the receiving pad.

After that, the upper mold, which has a flexible tube made of rubber, synthetic resin, etc. on its periphery, and the presser pad are simultaneously lowered, and the elliptical shape of the flexible tube expands and gradually collapses. The rolled-up portion of the skin is pressed onto the end portion of the base material by using the method, and the rolled-up portion of the skin is rolled into the end portion of the base material.

Further, in the skin wrapping device for a molded article according to the present invention, a space is formed in the center of the lower die, and an elastic body such as a spring is provided in the lower die within the space. A receiving pad on which a molded product is placed is provided at the tip of the elastic body, and is provided so as to be freely protrusive and retractable with respect to the lower mold. In addition, an upper mold with a space formed in the center is provided in the opposite part of the lower mold so as to be able to move up and down, and an elastic body such as a spring is provided in the upper mold within the space, and an elastic body such as a spring is provided at the tip of the upper mold. is equipped with a pressing pad that presses the molded product. In addition, rubber is added to the periphery of the lower surface of the upper mold.
A tube made of a flexible material such as synthetic resin is provided around the tube, and a pipe for supplying and discharging air is connected to the tube.

[Effect]

In such a molded product winding device, the skin side of the molded product, in which the base material and the skin having the winding portion are laminated, is set on the receiving pad of the lower die.

Lower the upper mold and presser pad toward the lower mold at the same time. When the tube surrounding the lower peripheral edge of the upper mold comes into contact with the molded product set in the lower mold, the tube expands into an elliptical shape and collapses while the air inside the tube is exhausted from the pipe. At this time, the tube collapses while simultaneously rolling up the rolled-up portion of the epidermis.

Then, when the upper mold is closed to the lower mold, air is supplied from the pipe to the tube to cause it to expand. Along with this, the tube enters the complex-shaped gap and completely wraps the rolled-up portion of the skin around the end portion of the base material. After this state continues for a predetermined period of time, the supply of air to the tube is stopped, and the upper mold is raised to open the mold. As a result, a molded article is obtained in which the wrapped portion of the skin is adhered to the end portion of the base material.

〔Example〕

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of a method for wrapping the skin of a molded article and a wrapping device thereof according to the present invention will be described in detail with reference to the drawings.

FIG. 1 is a schematic sectional view of the skin wrapping device for molded products according to the present invention before the mold is closed, FIG. 2 is a schematic sectional view of the skin wrapping device of FIG. 1 when the mold is closed, and FIGS. FIG. 4 is a partially enlarged sectional view for explaining the method for wrapping the skin of a molded article according to the present invention.

In FIGS. 1 to 4, reference numeral 1 denotes a fixed die plate formed flat, and a support mold 2 having a space 2a formed in the center is provided on the upper surface of the fixed die plate 1. A lower mold 3 is formed by the supporting mold 2 and the fixed die plate l.

Further, a plurality of springs 4 are fixed to the fixed die plate 1 in the space 2a of the lower mold 3, and a molded product W consisting of a base material Wa and a skin wb having a rolled-up portion Wc is attached to the tip of the spring 4. A receiving pad 5 for placement is fixed, and the lower mold 3
It is designed to appear and appear in the space 2a. The upper surface of the receiving band 5 is formed into a substantially dish shape so as to match the shape of the molded product W.

Further, a stopper 6 is provided between the springs 5 of the fixed die plate 1 to restrict the retracted position when the receiving pad 5 is retracted into the space 2a, and the length of the stopper 6 is such that the receiving pad 5 When immersed in the space 2a, the extension line of the edge of the receiving pad 5 that rises diagonally upward is a length located at the inner upper end of the support mold 2 minus the thickness of the base material and the skin of the molded product W. It is said that

In addition, an upper mold 7 is disposed opposite the lower mold 3,
The upper die 7 is composed of a flat movable die plate 8 and a support die 9 provided on the lower surface of the movable die plate 8 and having a space 9a formed in the center thereof.

Further, a plurality of springs 10 are fixed to the movable die plate 8 in the space 9a of the upper mold 7, and the tips thereof are
A presser pad 11 for pressing the molded product W is fixed thereto, and a part thereof is accommodated in the space 9a of the upper mold 7. The lower surface of the presser pad 11 is a molded product W.
It is formed flat to match the shape of the

In addition, a rubber tube 12 is provided around the lower peripheral edge 9b of the support mold 9 of the upper mold 7, and a rubber tube 12 is provided on the side of the rubber tube 12 for discharging air contained in the rubber tube 12.
A pipe 13 that also serves to supply air inside is connected. When the upper mold 7 is closed to the lower mold 3, the rubber tube 12 comes into contact with the upper end surface of the support mold 2 of the lower mold 3, and the air inside is discharged from the pipe 13, collapsing into an oval shape. It looks like this.

In the skin wrapping device for a molded article configured as described above, a method for wrapping the skin of a molded article W in which a base material Wa and a skin wb having a wrapped portion Wc are laminated will be described.

First, a molded product W consisting of the base material Wa laminated in the previous step and the skin wb having the wrapped portion Wc is set on the receiving pad 5 of the lower mold 3 as shown in FIG. At that time, the molded product W
Next, the upper die 7 and the presser pad 11 are simultaneously lowered in the direction of the lower die 3. Accordingly, as shown in FIG. 3, the rubber tube 12 provided around the lower peripheral edge 9b of the support mold 9 comes into contact with the molded product W placed in the lower mold 3, and the presser pad 11 also presses against the molded product. Press W.

Then, by further lowering the upper mold 7, the lower mold 3
The receiving pad 5 of is pressed toward the fixed die plate 1, and the wound portion We of the molded product W rises vertically, and the lower inner surface of the rubber tube 12 comes into contact with it. and,
The movement of the receiving pad 5 is regulated by a stopper 6, and the molded product W is fixed between the receiving pad 5 and the holding pad 11. At the same time, the air inside the rubber tube 12 is being discharged from the pipe 13, expanding and collapsing into an oval shape. At this time, the rubber tube 12 collapses while simultaneously rolling up the wrapped portion Wc of the skin wb.

Then, as shown in FIG. 2, when the upper mold 7 is closed to the lower mold 3, air is supplied from the pipe 13 to the rubber tube 12 to inflate it. At the same time, as shown in FIG. 4, the rubber tube 12 enters the complex-shaped gap and completely wraps the wrapped portion WC of the skin wb into the end portion of the base material Wa. After this state continues for a predetermined time, the supply of air to the tube 12 is stopped, and the upper mold 7 is raised to open the mold. As a result, a molded product W is obtained in which the wrapped portion Wc of the skin wb is adhered to the end portion of the base material Wa.

〔Effect of the invention〕

As explained above, in the method for wrapping the skin of a molded article and the wrapping device thereof according to the present invention, the skin wrapping portion of the molded product in which the base material and the skin having the wrapping portion are laminated is transferred to the skin wrapping portion of the base material. When wrapping the skin around the end of the base material, by pressing the flexible tube, we take advantage of the phenomenon of it expanding into an elliptical shape and gradually collapsing. This has the effect of being able to automate the process.

Further, in the present invention, the wrapping operation time can be reduced by automating the wrapping of the skin wrapping portion around the end portion of the base material.

In addition, in the present invention, by using a flexible tube, it can easily penetrate into the complex-shaped gap on the other side, so the finished appearance of the molded product after rolling can be improved. It has the effect of

[Brief explanation of the drawing]

FIG. 1 is a schematic cross-sectional view of the molded product skin wrapping device according to the present invention before the mold is closed. FIG. 2 is a schematic cross-sectional view of the skin wrapping device shown in FIG. 1 when the mold is closed. - FIGS. 3 and 4 are partially enlarged cross-sectional views illustrating the method for wrapping the skin of a molded article according to the present invention. FIG. 5 is a process diagram for explaining the conventional processing process of a molded product. 1--Fixed guide plate 2--Support mold 2 a--Space part 3--Lower mold 4--Spring 5-- ...-Receiving pad 6--Stopper 7--Upper mold 8--Movable guide plate 9--One support mold 9 a--One space Part 9b - - Lower peripheral edge part 10 - Spring 11 - Presser pad 12 - Rubber tube 13 - Pipe W - 1 11111 Article applicant Toyota Motor Corporation Figure 1 Figure 2 Figure 3 (b) Figure 5

Claims (2)

[Claims] (1) When wrapping the skin wrapping part of a molded product in which a base material and a skin having a wrapping part are laminated, into the end part of the base material,
The skin side of the molded product is placed on the receiving pad, and the upper die and the presser pad, each of which has a flexible tube disposed on the peripheral edge of the lower surface, are lowered, and the rolled-up portion of the skin is supported by the flexible tube. A method for wrapping the skin of a molded article, characterized in that the wrapping portion of the skin is rolled into the end portion of a base material while pressing the end portion of the material. (2) A receiving pad is provided in the space of the lower mold so as to be freely protrusive and retractable through an elastic body, and an upper mold having a space formed in the center is disposed in the opposite part of the lower mold so as to be movable up and down. , a presser pad is provided in the space of this upper mold with an elastic body interposed therebetween;
Furthermore, a skin entrainment device for a molded product is characterized in that a flexible tube is provided around the lower peripheral edge of the upper mold, and a pipe for both supplying and discharging air is connected to the flexible tube. .