JPH05329283A - Method for positioning sheet cover in production process for adhesive sheet - Google Patents

Abstract

PURPOSE:To enable even an unskilled person to efficiently and surely position a sheet cover to a compression mold in the production process for adhesive sheets. CONSTITUTION:Push-in projections 5b, 5b, 5c provided to be pushed with part 1a to 1a where the ornamental grooves of the sheet cover 1 are to be formed into hollow grooves 2b, 2b, 2c of a cushion pad 2 are formed to a shape bulging at the front end and the parts where the ornamental grooves of the sheet cover are to be formed are superposed along the push-in projections 5b, 5b, 5c at the time of setting the sheet cover 1. The push-in projections 5b, 5b, 5c are thereafter pinched with positioning lips 3 to 3 each having a C shape in section and the parts 1a to 1a where the ornamental grooves of the sheet cover are to be formed are positioned and held along the push-in projections 5b, 5b, 5c.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of positioning a seat cover in a manufacturing process of an adhesive sheet for vehicles, for example.

[0002]

2. Description of the Related Art An adhesive sheet of this type is usually manufactured by using upper and lower clamping dies 12, 13 as shown in FIG.
Is adhered to the cushion pad 2, and the seat cover 1 is set on the setting surface 12a of the upper pressing mold 12, while the adhesive 6 is applied to the upper surface of the lower pressing mold 13, which is a seating surface. Cushion pad 2 is set, and both compression dies 1
The seat cover 1 is adhered to the cushion pad 2 while holding 2 and 13 under pressure.

Here, the seat cover 1 is formed by sewing a skin piece cut into a predetermined shape, and the cushion pad 2 is formed by foaming a foaming agent into a predetermined shape in a foaming mold. Therefore, they are prepared in separate steps.

The seating surface of the adhesive sheet manufactured in this manner is normally arranged so that the left and right side holder parts S1 and S1 are located closer to the center than the main seating part S2 in order to make the seating comfort good as shown in FIG. Is also slightly raised to form a concave surface, while the side holder portions S1 and S1 and the main seating portion S are formed.
Decorative grooves S3 to S3 are formed along the boundary with 2 or the boundary before and after the main seat S2.

The decorative grooves S3 to S3 are generally formed by pushing the sewn portions 1a to 1a of the seat cover 1 into concave grooves 2b to 2b for decorative grooves formed on the cushion pad 2. The upper and lower pressing dies 12 and 13 are pressed and held, and are simultaneously formed when the seat cover 1 is bonded to the cushion pad 2.

In order to push the sewn portions 1a to 1a into the concave grooves 2b to 2b of the cushion pad 2, the setting surface 12a of the upper clamping die 12 is provided with push-in protrusions 12b to 12b having a sharp tip. It is formed to project.

When the seat cover 1 is set so that the sewn portions 1a to 1a are overlapped with each other along the pushing protrusions 12b to 12b, and the pressure dies 12 and 13 are pressed and held, the above-mentioned sewing is performed. Fitting portions 1a to 1a are pushed in and projecting ridges 12b to 12b
Thus, the seat cover 1 is adhered while being pressed into the concave grooves 2b to 2b of the cushion pad 2, so that the decorative grooves S3 to S3 are formed at the above-mentioned predetermined portions.

[0008]

Here, in order to obtain a decorative groove having a good appearance, the sewn portions 1a to 1a of the seat cover 1 to
It is necessary to press 1a into the recessed grooves 2b to 2b of the cushion pad 2 accurately, and for that purpose, the sewing parts 1a to 1a are positioned in a state in which they are accurately overlapped with the pushing protrusions 12b to 12b, and then the position shift occurs. It is necessary to clamp both the pressing molds 12 and 13 without holding them.

However, as described above, the seat shape in recent years has become more three-dimensional and complicated, and the sewn portions 12b to 12b of the seat cover 1 are pushed into the pushing protrusions 12b to 1b.
Positioning along 2b is not easy, and it is time-consuming, inefficient, and requires skill. In addition, even after the positioning is once performed, it is inevitable that the sewn portions 12b to 12b are pushed into the recessed grooves 2b to 2b, and that the positional deviations or the steps are not uniform.

The present invention has been made in view of this problem, and provides a method of positioning a seat cover in an adhesive sheet manufacturing process that allows an unskilled person to position and set the seat cover efficiently and accurately. The purpose is to provide.

[0011]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention has a push-in ridge formed in a bulge-like shape at the front end thereof, and is set along the push-in ridge when the seat cover is set. After the portions of the seat cover where the decorative groove is to be formed are overlapped with each other, a positioning clip having a C-shaped cross section is sandwiched between the pushing protrusions to form the portion of the seat cover where the decorative groove is to be formed. Is positioned and held along the push-in ridge.

[0012]

When the seat cover is set, the predetermined portion of the seat cover in which the decorative groove is to be formed is positioned and held by the positioning clip in a state of being superposed along the pushing ridge having a bulge at the tip, and both upper and lower molds are positioned. At the time of pressing, the cushion is pressed into the concave groove for the decorative groove of the cushion pad in a state where the positioning and holding are maintained.

[0013]

Embodiments of the present invention will now be described with reference to the accompanying drawings. In this example, as shown in FIG. 1, the seat cover 1 is set in the lower clamping die 5 and the cushion pad 2 is set in the upper clamping die 4 as an example. As described above, the positioning method described below becomes more effective by setting the vertical position opposite to the conventional one.

First, the cushion pad 2 is set on the lower surface side of the upper clamping die 4 in the figure, with the seating surface 2a side thereof facing downward, temporarily fixed by appropriate means. This clamping upper mold 4
Although not shown, it is supported by an appropriate means so as to be able to move up and down, and a set surface 4a is formed on the lower surface side thereof in conformity with the bottom surface shape of the cushion pad 2.

The cushion pad 4 is prepared by foaming and molding in a separate step in advance, and its shape and other changes are not particularly required, and the side holder portions 2e, 2e, which form both sides of the seat surface (lower surface in the figure) 2a, 2e is the main seat 2d in the center
It is slightly raised and is formed in a substantially curved shape.
On the seat surface 2a, along the boundary between the main seat portion 2d and the side holder portions 2e, 2e, the concave grooves 2b, 2 for decorative grooves are formed.
b is formed (hereinafter, the concave groove in this portion is referred to as "vertical concave groove"). The vertical grooves 2b, 2b are formed so as to reach both ends of the cushion pad 2 in the front-rear direction (the direction perpendicular to the paper surface). A horizontal concave groove 2c similar to the vertical concave groove 2b is also formed between the vertical concave grooves 2b, 2b and substantially in the center of the main seating portion 2d in the front-rear direction. As described above, the seat surface 2a of the cushion pad 2 has vertical and horizontal concave grooves 2b,
2b and 2c are arranged and formed in a substantially H shape.

Further, the seat surface 2 of the cushion pad 2
The hot-melt type adhesive 6 is previously applied to a and is dried. The portions to which the adhesive 6 was applied are indicated by X in the figure.

Next, the seat cover 1 is set on the setting surface 5a on the upper surface side of the pressing die 5 with the back surface side thereof facing upward.

The setting surface 5a of the pressing die 5 is formed so as to be slightly raised so as to match the curved shape of the seat surface 2a of the cushion pad 2. The groove 2 of the cushion pad 2 is formed on the setting surface 5a.
Indented ridges 5b, 5 in H shape corresponding to b, 2b, 2c
b and 5c are arranged and formed. Longitudinal pushing protrusion 5
b and 5b correspond to the vertical concave grooves 2b and 2b, and the lateral pushing projection 5c is formed corresponding to the horizontal concave groove 2c.

The push-in projections 5b, 5b, 5c are sewn to the seat cover 1 when the pressing upper die 4 is lowered and the seat cover 1 described later is adhesively held to the seat surface 2a of the cushion pad 2. The recesses 2 of the cushion pad 2 are formed by the portions 1a to 1a.
It is used to form the decorative grooves S3 to S3 on the seating surface of the adhesive sheet S by being pressed into b, 2b, 2c, and is formed in a bulge shape so that it can be inserted into the concave grooves 2b, 2b, 2c as shown in the figure Has been done.

Although not shown in the drawing, this compression clamping die 5
Is capable of heating the adhesive 6 to a temperature at which it can be melted.

Next, the seat cover 1 is formed by sewing a plurality of skin pieces cut into a predetermined shape, and the sewn portions 1a to 1a have the recessed grooves 2b and 2b of the cushion pad 2. , 2c are pressed into the decorative grooves S3 to S3
In order to form the above, the portions are corresponding to the concave grooves 2b, 2b, 2c. In the seat cover 1 formed in this way, the sewn portions 1a to 1a are inserted into the pushing protrusions 5
b, 5b, 5c so as to be placed along the pressing clamp die 5
Is set on the setting surface 5a.

On the other hand, the sewn portions 1a to 1a of the seat cover 1 set in this way are pushed into the protrusions 5b, 5b,
Positioning clips 3 to 3 are prepared as jigs for positioning and fixing along 5c.

The positioning clips 3 to 3 are integrally formed of, for example, a fluororesin having a property of not being adhered to the cushion pad 2 by the adhesive 6.
As shown in the figure, it has a long C-shaped cross section and has a certain elastic force. As shown in FIG. 3, the push-in ridges 5b, 5b sandwich the sewn portions 1a-1a of the seat cover 1 therebetween. , 5c.

The positioning clips 3 to 3 are separately prepared for the vertical pushing protrusions 5b and 5b and the horizontal pushing protrusion 5c, respectively, and the positioning clips 3 and 3 for the vertical pushing protrusions 5b and 5b are provided. Is formed to be longer than the vertical pushing protrusion 5b by a predetermined amount, and when fitted, one end thereof protrudes from the setting surface 5a, and the protrusion is formed to have a length capable of gripping the protrusion. Further, the positioning clip 3 for the lateral pushing projection 5c is formed to have substantially the same length as the lateral pushing projection 5c, and the positioning clips 3, 3 for the vertical pushing projection when fitted on both ends thereof. Stretching pieces 3a, 3a are formed integrally with each other so as to extend over and extend beyond the setting surface 5a and have a grippable length.

The upper and lower pressing dies 4 and 5 and the positioning clips 3 to 3 are constructed as described above, and the seat cover 1 is positioned and set as described below.

First, as shown in FIG. 1, the cushion pad 2 is set on the upper clamping die 4. The adhesive 6 is applied to the seat surface 2a of the cushion pad 2 in advance.

On the other hand, the seat cover 1 is set on the setting surface 5a of the pressing lower die 5. That is, after the sewn portions 1a to 1a of the seat cover 1 are placed along the leading ends of the push-in projections 5b, 5b, and 5c, the sewn portions 1a to 1a are sandwiched therebetween. The positioning clips 3 to 3 prepared separately for each of the pushing protrusions 5b, 5b,
Fit in 5c.

Here, first, the positioning clips 3 and 3 are fitted to the vertical pushing protrusions 5b and 5b, and then the positioning clip 3 is fitted to the lateral pushing protrusions 5c. And
The pulling pieces 3a, 3a at both ends of the positioning clip 3 for the lateral pushing protrusion 5c are extended leftward and rightward in the drawing so as to extend over the positioning clips 3, 3 which are fitted in advance as described above. It protrudes from 5a. In addition,
One ends of the positioning clips 3 and 3 that are fitted in advance are also fitted and protrude from the set surface 5a.
This set state is shown in FIG.

With the above, the operation of setting the seat cover 1 is completed, and the seat cover 1 is positioned and held with the sewn portions 1a to 1a being superposed along the pushing projections 5b, 5b, 5c and compressed. It is set on the setting surface 5a of the mold 5.

When the seat cover 1 is set on the pressing mold 5 in this manner, the pressing mold 4 is lowered to set both pressing molds 4 and 5.
Hold by pressing. At this time, the sewing portion 1a of the seat cover 1
1a is a push-in ridge 5 by the positioning clips 3-3.
The cushion pad 2 is pushed into the concave grooves 2b, 2b, 2c of the cushion pad 2 while being held along the b, 5b, 5c.

Thereafter, the pressing die 5 is heated to melt the adhesive 6 applied to the cushion pad 2, and then cooled, so that the seat cover 1 is adhered to the cushion pad 2. When the bonding process is completed in this way, the temporary fastening between the upper clamping die 4 and the cushion pad 2 is released, and only the upper clamping die 4 is retracted upward to release the clamping.

Next, the positioning clips 3 to 3 are removed. For this work, the protruding ends of the positioning clips 3 to 3 may be gripped, pulled in the extending direction, slid along the pushing protrusions, and pulled out from the concave grooves 2b, 2b, 2c. First, the positioning clips 3 and 3 fitted to the vertical pushing protrusions 5b and 5b are pulled out first, and then the positioning clips 3 fitted to the lateral pushing protrusion 5c.
Is withdrawn.

Since each of the positioning clips 3 to 3 is made of a fluororesin which cannot be adhered by the adhesive 6, the positioning clips 3 to 3 can be easily slid along the pushing ridges so that the cushion pad 2 and the seat cover 1 can be connected. It can be pulled out from between.

After the positioning clips 3 to 3 have been removed, the cushion pad 2 together with the seat cover 1 is taken out from the clamping die 5.

After that, if the terminal portion of the seat cover 1 is fixed, the seat cushion (or seat back) of the adhesive sheet S can be obtained. The decorative groove S3 of the seat cushion etc. thus obtained
S3 is the concave grooves 2b, 2 of the cushion pad 2 with the sewn portions 1a to 1a of the seat cover 1 accurately positioned.
Since it is formed by being pressed into b and 2c, its shape is very good.

The adhesive sheet S is manufactured as described above. In the manufacturing process, the positioning of the seat cover 1 and by extension, the sewn portions 1a to 1a is completed by mounting the positioning clips 3 to 3, It is not necessary for an operator to hold the sewn portions 1a to 1a until the sewn portions 1a to 1a are pushed into the recessed grooves of the cushion pad 2 in order to prevent the positional deviation. Therefore, the positioning (setting work) of the seat cover is simplified, and it can be performed efficiently even by a skilled worker.

In the embodiment described above, the case where the decorative groove is formed along the sewn portion of the seat cover is illustrated, but the present invention is not limited to this case, and a predetermined portion of the seat cover is formed. It is widely applicable to the case where a decorative groove is formed.

Also, the case where the seat cover is set in the pressing lower mold is exemplified, but the present invention is not limited to this, and the same is true when the seat cover is set in the pressing upper mold as shown in FIG. It is sufficient to provide a pushing protrusion with a bulge at the tip on the setting surface of the press-fitting mold on which the seat cover is set, and to position and hold a predetermined portion of the seat cover with a positioning clip between the pushing protrusion and the pushing protrusion. Various embodiments can be implemented without departing from the scope of the claims.

[0039]

According to the present invention, the seat cover can be easily positioned because of the above method, and the decorative groove of the seat cover is to be formed efficiently and accurately even by an unskilled operator. Can be pushed into the concave groove of the cushion pad, so that the decorative groove having a good appearance can be stably obtained without variation.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view showing a set state of a seat cover and a cushion pad according to an embodiment of the present invention.

FIG. 2 is an overall perspective view of a pressing mold with a seat cover set.

FIG. 3 is a vertical cross-sectional view of the vicinity of a push-in ridge on which a positioning clip is attached.

FIG. 4 is an overall perspective view of an adhesive sheet.

FIG. 5 is related to a conventional seat cover positioning method,
It is a longitudinal cross-sectional view showing a set state of the seat cover and the cushion pad.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Seat cover, 1a ... Sewing part 2 ... Cushion pad, 2a ... Seat surface, 2b ... Vertical groove, 2
c ... Lateral groove 3 ... Positioning clip 4, 12 ... Upper clamping die 5, 13 ... Lower clamping die 5a ... Set surface, 5b ... Vertical pushing protrusion, 5c ... Horizontal pushing protrusion 6 ... Adhesive 12b ... Pushing Ridge S ... Adhesive sheet, S1 ... Side holder part, S2 ... Main seat part, S3 ... Decorative groove

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁵ Identification code Internal reference number FI technical display location B29L 31:58 4F

Claims (1)

[Claims] 1. A seat cover is set on one of the pressing molds having a pushing groove for a decorative groove formed on a setting surface, with a portion where a decorative groove is to be formed along the pushing groove. On the other hand, a cushion pad having a groove for a decorative groove is set on the seating surface of the other pressing mold, and an adhesive is applied to the seating surface of the cushion pad. While pressing the portion of the seat cover where the decorative groove is to be formed, into the concave groove of the cushion pad through the pressing protrusion, both press molds are held by pressing to hold the seat cover. In the manufacturing process of an adhesive sheet, which is adhered to a cushion pad to obtain an adhesive sheet in which a linear decorative groove is formed on a seat surface, the pressing protrusion is formed in a bulge at the tip, and the seat cover is set. When the seam is pushed along the indentation ridge, After the portions of the cover where the decorative groove is to be formed are overlapped with each other, a positioning clip having a C-shaped cross section is sandwiched between the push-in ridges to form the portion of the seat cover where the decorative groove is to be formed. A method of positioning a seat cover in a process of manufacturing an adhesive sheet, characterized in that it is positioned and held along the pushing protrusion.