JP2566290Y2 - Groove-shaped structure of adhesive sheet - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a die structure of a pressure-bonding molding die for an adhesive sheet, and more particularly to a deep groove-shaped die of a pressure-bonding molding die for pressure-bonding a sheet cover to a mold pad having a deep groove. Regarding the structure.

[0002]

2. Description of the Related Art To manufacture a sheet having a groove shape,
Conventionally, the sewn portion of the seat cover is engaged with the bottom of the groove of the mold pad by hogling to form a concave portion of the seat.

[0003] However, for a sheet having a deep groove shape, the feeling of the deep groove cannot be sufficiently obtained by the engagement by the hog ring.
3 and the seat cover 3 in the recess 36 and the frame 37 as well.
Adhesive sheet method for adhering 2 is adopted.

As shown in FIG. 8, a method for manufacturing such an adhesive sheet is to form a sheet cover 32 on a molding surface 40 of a lower mold 39 having a protruding ridge 38 formed in a deep groove 35 of a mold pad 34. Vacuum suction setting is performed, and the sewn portion 33 is put on the ridge portion 38. In this state, the mold pad 34 having the adhesive applied to the front surface and the deep groove portion 35 is fixed to the upper die 41, and heating and cooling are performed while pressing on the back surface of the sheet cover 32, and the pressure is released. Is manufactured.

[0005]

However, due to the shape of the deep groove portion 35, that is, since the groove is narrow and deep, when the deep groove portion 35 is pressed onto the seam portion 33, the seam portion 33 and the deep groove portion In many cases, the sewn portions 33 do not easily reach the bottom of the deep groove portion 35 because they rub against each other at the groove standing surface 35 a of 35. Further, the sewn portion 33 was twisted or wrinkled near the entrance of the deep groove portion 35. For this reason, the linearity of the deep groove portion 35 of the manufactured adhesive sheet cannot be sufficiently obtained, and a defect in shape formation has occurred.

Therefore, an object of the present invention is to propose a deep groove shape type structure of an adhesive sheet capable of forming a good shape of a deep groove portion of the adhesive sheet.

[0007]

According to the present invention, as a means for solving the above technical problem, a lower mold and an upper mold sew a plurality of pieces along a pattern of the groove on a mold pad having the groove. A press-bonding molding die for press-bonding the seat cover, wherein a hollow portion is formed in the lower die, and a molding surface is formed on the upper surface along the surface of the mold pad. A plurality of ventilation holes and a narrow groove-like slit are penetrated according to the pattern of the groove portion of the mold pad so as to be capable of vacuum suction from the lower mold, and a convex ridge portion which can be inserted into the groove portion of the mold pad is formed from the hollow portion into a narrow groove shape. A groove-shaped type structure of an adhesive sheet configured to protrude upward through a slit and connect the protruding portion to a vibrating means provided in the hollow portion so as to be able to vibrate within the groove width of the narrow groove-shaped slit. did.

[0008]

According to the above structure, the molding surface of the lower mold is formed along the surface shape of the mold pad, and the ridge inserted into the groove is different from the conventional one in the form of a narrow groove penetrating the molding surface. The slit protrudes from the inside of the hollow portion. The protruding ridge portion is formed so as to be able to reciprocate in the groove width direction of the deep groove portion by vibrating means provided in the hollow portion. Further, the narrow groove-shaped slit formed on the molding surface is formed with a margin so that the ridge portion can vibrate. For this reason, when the seat cover is set by vacuum suction on the molding surface of the lower mold, the sewing portion is strongly sucked by the gap formed between the narrow groove-shaped slit and the protruding ridge portion, and the sewn portion is firmly attached to the protruding ridge portion. Is fixed. In addition, when the mold pad is lowered, it reciprocates in the width direction of the deep groove portion of the inserted mold pad, thereby expanding the deep groove portion in the width direction of the groove and preventing the sewn portion from coming into contact with the groove standing surface. The sewn portion can be reliably inserted into the bottom of the deep groove portion while reducing the friction and minimizing the rubbing.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. FIG. 3 shows an upper mold 11 and a lower mold 13.
The state before the pressure-bonding bonding molding of the molding die composed of and the mold pad 1 and the seat cover 6 is shown. The mold pad 1 is formed of a porous cushion body as in the related art, and includes a central main pad 2 and left and right side pads 3. A deep groove 4 is provided between the main pad 2 and the side pad 3.
Are formed. The main pad 2 is located below the left and right side pads 3 and has a concave shape.

The seat cover 6 is also formed by sewing a skin 7 and a urethane pad 8 cut into a predetermined shape into a predetermined shape, as in the prior art. The sewn portions 9 are formed corresponding to the deep groove portions 4 and the left and right end portions of the mold pad 1.

The molding die comprises an upper die 11 and a lower die 13 as in the prior art. The upper die 11 is disposed to face the lower die 13 and is configured to be vertically movable by a driving device (not shown). A mold pad 1 is provided on the lower surface of the upper mold 11.
Is formed so as to be fixed at a predetermined position.

The lower die 13 is formed by a crimping die 16 and a base 19. The base 19 has a concave portion 20, and the crimping die 16 has a lower end 1 that can be placed along the outer peripheral portion of the concave portion 20.
6a is formed in a convex shape. As a result, the lower mold 1
3 has a hollow portion 14 as a whole. The upper surface of the crimping die 16 is formed on a molding surface 17 having a shape that allows the mold pad 1 to be inverted and placed thereon, and the molding surface 17 has a large number of air holes 17a through which vacuum suction can be performed. further,
Elongated narrow groove-shaped slits 18 are provided corresponding to the deep groove portions 4 of the mold pad 1. This narrow slit 18
Is formed to be wider than the groove width of the deep groove portion 4, and the length thereof substantially corresponds to the length of the deep groove portion 4. Note that the narrow groove-shaped slit 18 is formed in the deep groove 4 formed in the mold pad 1.
Are formed on the molding surface 17 corresponding to the shape, position, etc. of the mold pad 1 in the present embodiment, while being formed on the deep groove portion 4 provided between the main pad 2 and the side pad 3. Can vary depending on the design.

On the other hand, a suction port 21 connected to a vacuum suction device is formed in a part of the concave portion 20 of the base 19, and the hollow portion 1 is formed.
4 allows vacuum suction. Further, at predetermined positions corresponding to the narrow groove-shaped slits 18 of the molding surface 17 at the bottom of the concave portion 20, support members 22 pointing upward are provided in two rows. The height of each support 22 is approximately half the height of the hollow portion 14, and a vibration device 23 is provided at the upper end of each support 22.

The vibration device 23 is connected to a predetermined power source (not shown), and is formed so that a plurality of vibration shafts 24 provided in the device can be vibrated by an external connection operation. The vibrating shaft 24 is provided upright in the vibrating device 23, and reciprocates along the width direction of the narrow groove-shaped slit 18 of the molding surface 17. An upper portion of the vibrating device 23 is opened, and a plurality of vibrating shafts 24 formed in each row are provided with one convex ridge 26 further upwardly. Each of them is formed in a shape protruding from the slit 18 above the lower die 13 and capable of being inserted into the deep groove 4 of the mold pad 1.

The protruding ridge 26 is formed in a plate shape having a substantially spear-shaped cross section, and the portion of the protruding ridge 26 projecting upward from the molding surface 17 is a shape that can be inserted into the deep groove 4 of the mold pad 1 as in the conventional case. It has become. That is, it corresponds to the width, depth and length of the deep groove 4. The protruding ridge portion 26 is positioned so as to protrude upward from the narrow groove-shaped slit 18 provided in the molding surface 17, and the narrow groove-shaped slit 16 is formed wider than the groove width of the deep groove portion. Slightly elongated gaps 18a are formed on both sides of the ridge 26.

Next, a method of bonding the seat cover 6 to the mold pad 1 using this mold will be described.
The lower mold 13 is operated by a vacuum suction source to vacuum-suction the hollow portion 14. The seat cover 6 is provided on the molding surface 17 of the lower mold 13.
Of the sewn portion 9 facing the forming surface 17 and the sewn portion 9
Set to 6. At this time, since the suction is also performed from the elongated gaps 18a formed on both sides of the protruding ridge portion 26 in the narrow groove-shaped slit 18, a strong suction force acts on the vicinity of the protruding ridge portion 26 unlike the conventional case. Become.

For this reason, the sewing portion 9 is firmly fixed to the ridge 26, and the skin 7 does not float from the ridge 26. Other portions of the seat cover 6 are also suction-set on the molding surface 17 in close contact.

Next, the mold pad 1 with the adhesive applied to the surface and the deep groove to be bonded is set on the upper mold 11, and the upper mold 11 is lowered. At the same time hollow part 14
By operating a switch of a vibration device 23 provided therein, the reciprocating vibration of the vibration shaft 24 is finely reciprocated in the width direction of the narrow groove slit 18. Due to this vibration, the ridge 26 attached to the vibration shaft 24 starts fine vibration in the width direction of the narrow groove-like slit 18 within the width thereof.

The sewing portion 9 is firmly fixed to the ridge 26 by a suction force, and the gap 18a between the ridge 26 and the narrow groove 18 moves to one side by the vibration of the ridge 26. Only, the state of being always sucked is maintained. For this reason, the sewing part 9 does not deviate from the ridge 26.

The upper die 11 is attached to the ridge 26 in such a state.
When the mold pad 1 is moved downward, the ridge 26 to which the sewn portion 9 is fixed is inserted into the deep groove 4 while finely reciprocating in the groove width direction of the deep groove 4. At this time, since the ridges 26 are vibrating in the groove width direction, the contact between the groove standing surface 5 and the sewn portion 9 and the urethane pad 8 near the sewn portion becomes intermittent, and The vibration in the direction also has the effect of expanding the deep groove portion 4 in the groove width direction. As a result, unlike the related art, the rubbing between the sewn portion 9 or the like and the grooved surface 5 is reduced, and the sewn portion 9 is caught in the middle of the deep groove portion 4, or the sewn portion 9 is displaced from the protruding ridge portion 26. Ridge 26 without
Reaches the bottom of the deep groove 4 of the mold pad 1. The other parts of the seat cover 6 do not shift from the molding surface 17 due to the vibration.

After the seat cover 6 is fixed to the mold pad 1 as described above, the vibration of the ridge 26 is stopped,
The sheet cover 6 is adhered to the mold pad 1 by being heated with pressure by the upper mold 11. Thereafter, the upper mold 11 is cooled, and the upper mold 11 is moved upward.
The mold pad 1 to which is adhered is taken out.

As shown in FIG. 5, the deep groove portion of the adhesive sheet manufactured as described above is such that the sewn portion 9 reaches the bottom of the deep groove portion 4 and the sewn portion 9 is displaced and the groove standing surface 5 is formed. Also, the seat cover 6 is finished in a straight state with a sufficient feeling of a deep groove without occurrence of lifting of the seat cover 6 in the vicinity thereof. Furthermore, since the sewn portion 9 reaches the bottom and is adhered in a state where it is located straight, adhesion peeling after manufacturing hardly occurs, and a good-looking state can be maintained.

In this embodiment, the vibration device 23 having a plurality of vibration shafts 24 is used as the vibration means, and one convex ridge 26 corresponding to the deep groove 4 is attached. However, the present invention is not limited to this. It does not do. It is only necessary that the ridge 26 be connected to a device capable of generating a constant vibration so that a constant vibration can be generated in the narrow groove slit 18.

In this embodiment, the vibrating device 23 is used to vibrate the ridge 26. However, the present invention is not limited to this. An air cylinder 27 by opening and closing may be used. That is, the amount of air in the cylinder 27 is
8 etc. to adjust the built-in piston 2
The lower part of the ridge 26 may be attached to a rod that drives the piston 9 and moves in synchronization with the piston 29. The ridge 26 is not provided upright in the recess 20, but is held in the hollow portion 14 by a pin or the like.

Further, as shown in FIG. 7, the vibration can be performed by a cam 30 and a spring 31. In this case, the ridge 26 is held in the hollow portion 14, and a cam 30 having, for example, a rhombic cross section is provided along the lower side of the ridge 26. The cam 30 is rotated by a motor, and from the difference in the radius of rotation of the cam 30, the ridge 26 is pushed, and at the same time, the ridge 26 is pressed by the spring 31 provided on the opposite side and is pushed back by the reaction to return. The ridges 26 can also be vibrated.

[0026]

According to the invention, a vibrating ridge is provided on the molding surface of the lower mold, and the seat cover is adhered to the ridge with the sewing portion firmly fixed. Since the mold pad is set on the molding surface while vibrating in the groove width direction of the deep groove portion of the pad, the sewn portion and the vicinity of the sewn portion are reduced in contact with the groove standing surface of the deep groove portion and rub against each other The sewn portion reaches the bottom of the deep groove portion without any trouble. Thus, the fixed state of the ridge is maintained and adhered and fixed to the deep groove, so that the ridge is securely adhered to the deep groove. Therefore, the deep groove portion of the manufactured adhesive sheet has linearity, and wrinkles and floating do not occur near the deep groove portion, so that product defects can be reduced.

[Brief description of the drawings]

FIG. 1 is a sectional view of a lower mold.

FIG. 2 is a perspective view of a lower mold.

FIG. 3 is a view showing a state where a mold pad is lowered to a lower mold on which a seat cover is set.

FIG. 4 is a diagram showing a state where a seat cover near a ridge is sucked;

FIG. 5 is a cross-sectional perspective view showing a bonding state and appearance of a deep groove portion of a manufactured bonding sheet.

6A and 6B are a cross-sectional view and a perspective view illustrating a mechanism of generating vibration by an air cylinder.

FIGS. 7A and 7B are a cross-sectional view and a perspective view showing a mechanism of generating vibration by a cam and a spring.

FIG. 8 is a cross-sectional view illustrating a conventional method for manufacturing an adhesive sheet.

FIG. 9 is a cross-sectional perspective view showing the bonding state and appearance of a deep groove portion of a conventional bonding sheet.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Mold pad 4 ... Groove part (deep groove part) 6 ... Seat cover 9 ... Sewing part 11 ... Upper die 13 ... Lower die 14 ... Hollow part 17 ... Molding surface 17a ... Vent hole 18 ... Narrow groove slit 23 ... Vibration means 26 ... ridge

Continuation of the front page (51) Int.Cl. ⁶ Identification code Agency reference number FI Technical display location // B29L 31:58

Claims (1)

(57) [Scope of request for utility model registration] 1. A press-bonding molding die for press-bonding a sheet cover sewn along a pattern of a groove with a plurality of pieces to a mold pad having a groove by a lower die and an upper die, wherein the lower die is A molding surface is formed on the upper surface thereof along the surface of the mold pad, and the molding surface has a plurality of ventilation holes and a pattern of the groove portion of the mold pad so as to be capable of vacuum suction from a lower mold. A vibrating means having a narrow groove-like slit penetrating therethrough, projecting a convex ridge insertable into the groove of the mold pad upward from the hollow through the narrow groove-like slit, and providing the convex ridge inside the hollow; And a groove-shaped structure of the adhesive sheet which is configured to be vibrated within a range of a groove width of the narrow groove-shaped slit.