JPH0547634Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to an improvement of a clamping device for skin material.

(Prior Art) It has been common practice in the past to attach a skin material to the surface of a base material mainly for the purpose of improving the aesthetic appearance and protecting the surface. When forming such a laminate, that is, when bonding the skin material to the surface of the base material, for example, as shown in FIG. It is generally common practice to position and align the skin material a along the surface of the base material by clamping and holding it from both sides with a pair of clamp frame members b and b constituting the jig c. .

(Problem to be solved by the invention) However, the clamping jig c of the clamping device as described above simply clamps the outer circumferential portion of the skin material a between the clamp frame members b and b from above and below in a flat plane. Therefore, for example, when the above-mentioned skin material a is clamped and held under tension,
The skin material a becomes easily misaligned due to the restoring force acting on it, and as a result, lifting and wrinkles occur in the skin material a, making it difficult to properly position the skin material a on the surface of the base material. There was a problem that it was not possible to make it comply with the following.

Furthermore, even if the skin material a has a slippery property, the skin material a tends to slip due to the surface pressure that is applied when the skin material a is bonded, and as in the above case, the skin material a is This means that it will not be possible to properly align the material surface.

The present invention has been developed in view of these points, and its purpose is to improve the structure of the clamp jig for clamping the skin material.
The purpose is to securely clamp and hold the skin material so as not to displace it, position it in a regular state on the surface of the base material, and properly align it with the surface of the base material.

(Means for Solving the Problems) In order to achieve the above object, the present invention provides that when bonding a skin material to the surface of a base material, the outer periphery of the skin material is held in an expanded state by a pair of clamp frame members. The following solution was taken for a clamp device that has a frame-shaped clamp jig that is clamped from both sides.

That is, the solution means of the present invention is such that a positioning pin made of an elastic body that can be elastically deformed is provided on one clamp frame member of the clamp jig so as to protrude toward the other clamp frame member. Further, a fitting hole into which the positioning pin fits is formed in the other clamp frame member. When clamping the skin material, by fitting the positioning pin into the engagement hole formed in the skin material, the skin material is sandwiched from both sides by both clamp frame members. Attach it and hold it with a clamp to prevent it from shifting. on the other hand,
When removing the skin material from the above clamp jig,
In an unclamped state in which the positioning pin is released from the fitting hole, the skin material is pulled to elastically deform the positioning pin, thereby releasing the positioning pin from the fitting hole. It is characterized by what it did.

(Function) With the above configuration, in the present invention, when the skin material is bonded to the surface of the base material, the outer periphery of the skin material in an expanded state is sandwiched from both sides by the pair of clamp frame members of the clamp jig. It is held by the clamp. In this state, the positioning pin of one clamp frame member is engaged with the engagement hole of the skin material, and is fitted into the engagement hole of the other clamp frame member, thereby preventing the positional shift of the skin material. Regulated.

As a result, even if the skin material is held under tension by clamps or has slippery properties, it is possible to reliably prevent the skin material from shifting. There is no lifting or wrinkles, and the skin material is properly positioned and properly aligned with the surface of the base material.

On the other hand, when removing the skin material from the clamp jig, the above-mentioned positioning pins are unfitted to the fitting holes to be in an unclamped state, and when the skin material is pulled in this state, this tensile force Then, the positioning pin is elastically deformed, and the positioning pin is disengaged from the engagement hole.

Specifically, for example, with the skin material and the base material sandwiched between the upper and lower molds of the mold and the skin material bonded to the surface of the base material, both clamp frame members are separated from each other. When the cutter installed on the side of the mold is used to cut the unnecessary part of the outer peripheral edge of the skin material, the skin material is pulled due to the pressing force of the cutter when cutting. This tensile force acts on the positioning pin, causing the positioning pin to disengage from the engagement hole of the flexible skin material.

In this way, the skin material is automatically removed from the positioning pins by the cutting operation of the cutter, so
The removal work of the skin material does not require human labor, and the removal of the skin material becomes smooth.

(Example) Hereinafter, an example of the present invention will be described based on the drawings.

Figure 2 shows a clamping device A according to an embodiment of the present invention.
1 schematically shows a laminate molding apparatus equipped with a base 2 of the laminate molding apparatus, 1 is an upper mold integrally provided on a base 2 of the laminate molding apparatus, 3 is a lower mold disposed opposite to the lower mold, The upper mold 1 and the lower mold 3 are used as a base material (not shown).
A mold 4 is constructed on which a skin material W (shown in FIG. 1) is bonded.

Around the upper die 1 of the base plate 2, there are four clamp cylinders 5 (only two are shown in FIG. 2) each having a piston rod 5a extending downward.
are arranged, and a rectangular frame-shaped movable clamp frame member 6 is connected to the tip of the piston rod 5a of each clamp cylinder 5, as shown in FIG.
Further, above the movable clamp frame member 6, a fixed clamp frame member 7 having substantially the same shape as the movable clamp frame member 6 is supported by the lower ends of support members 8, 8, . . . extending downward from the base 2. It is arranged as follows.

Then, by the synchronized contraction operation of each of the clamp cylinders 5, the movable clamp frame member 6 is raised, and the outer circumference of the skin material W is sandwiched from both sides with the fixed clamp frame member 7 in an expanded state. While being clamped, the movable clamp frame member 6 is lowered by synchronized extension operations of the respective clamp cylinders 5 to unclamp the skin material W held by the clamp.

Therefore, when bonding the skin material W to the surface of the base material between the movable clamp frame member 6 and the fixed clamp frame member 7, the outer periphery of the skin material W is held in an expanded state from both sides. A frame-shaped clamp jig 9 for holding the clamp is configured.

Further, the clamp jig 9 and each of the above-mentioned clamp cylinders 5 constitute a clamp device A of the present invention.

Furthermore, as shown in enlarged detail in FIG. 1, four mounting holes 12, 12, . Each mounting hole 12 includes
Positioning pins 10, 1 made of elastic material such as rubber
0, ... are mounted so as to protrude upward, that is, protrude toward the fixed clamp frame member 7 side,
On the other hand, the corner portion of the fixed clamp frame member 7 has a fitting hole 1 into which each of the positioning pins 10 fits.
1, 11, . . . are formed.

When clamping the skin material W, the movable clamp frame is held in a state in which the engagement holes w1, w1, . By raising the member 6 by the contraction operation of each of the clamp cylinders 5 and fitting each of the positioning pins 10 into each of the fitting holes 11 of the fixed clamp frame member 7, the skin material W is attached to both the movable and fixed clamp frames. It is firmly clamped and held by members 6 and 7 from both sides to prevent it from shifting.

Further, when removing the skin material W from the clamp jig 9, the movable clamp frame member 6 is lowered by the extension operation of each of the clamp cylinders 5, and the positioning pins 10 are fitted into the respective fitting holes 11. In the released unclamped state, pull the skin material W in the direction of the arrow in FIG.
The engagement of each positioning pin 10 with each engagement hole w1 is released by elastically deforming the positioning pin 10 as shown by imaginary lines in the figure.

As described above, in this embodiment, the fixed clamp frame member 7 is moved in a state in which each positioning pin 10 of the movable clamp frame member 6 is engaged with each engagement hole w1 of the skin material W.
By fitting each positioning pin 10 into each fitting hole 11 of For example, when the material W is under tension, the clamp jig 9
Even if the skin material W is held by a clamp or has a slippery property, it is possible to reliably prevent the skin material W from shifting, thereby eliminating lifting and wrinkles of the skin material W. The material W can be properly positioned and properly aligned on the surface of the base material.

Further, in the above embodiment, since each positioning pin 10 is made of an elastic body that can be elastically deformed,
In the clamped state after bonding, the movable clamp frame member 6 is lowered to separate the positioning pins 10 from the respective fitting holes 11 of the fixed clamp frame member 7,
In this unclamped state, for example, when cutting the unnecessary outer peripheral edge of the skin material W with a cutter (not shown) provided on the side of the upper mold 1, the skin material W is cut by the pressing force of the cutter when cutting. It is possible to bend each of the positioning pins 10 by pulling, and thereby each positioning pin 10 can be disengaged from each engagement hole w1 of the skin material W.

Therefore, the skin material W can be automatically removed from the positioning pin 10 by the cutting operation of the cutter, and the skin material W can be smoothly removed without manual intervention.

In addition, when clamping and holding the skin material W in the clamping jig 9, an unnecessary part of the skin material W that does not contribute to the product, that is, an outer peripheral part of the skin material W that is not bonded to the base material, has a length of, for example, 15 to 100 mm. A plurality of slits (not shown) are formed in advance to apply surface pressure to the skin material W when clamping the skin material W with the clamp jig 9 under tension or when bonding the skin material W. In such cases, the skin material W can be reliably aligned with the base material by giving the skin material W a degree of freedom to stretch with each of the slits and adjusting the expansion rate of the skin material W depending on the product. do.

The slits may be formed at predetermined intervals along the outer periphery of the skin material W, or may be formed in a staggered manner, or a combination of these may be used, depending on the requirements. may be determined as appropriate depending on the product shape.

Moreover, the opening position of each engagement hole w1 of the skin material W is as follows:
Openings are slightly inward in areas where it is better to pull the skin material W outward to ensure that it is aligned with the base material, while openings are slightly outward in areas where it is better to loosen the skin material W. Adjust the expansion rate by opening the opening.

Furthermore, a slit reaching the outer peripheral edge of the skin material W is formed in each engagement hole w1 of the skin material W, so that the laminate can be easily removed from the clamping jig 9 after the skin material W has been bonded to the base material. Just do it.

Further, in the above embodiment, the upper clamp frame member 7 is fixed and the lower clamp frame member 6 is movable. If not, on the contrary, the upper clamp frame member 7 may be movable and the lower clamp frame member 6 may be fixed.

(Effect of the invention) As explained above, according to the invention, the positioning pin protruding from one clamp frame member is engaged with the engagement hole of the skin material, and the positioning pin is connected to the other clamp frame member. By fitting the skin material into the fitting hole formed in the clamp frame members, the skin material can be securely clamped and held without shifting the skin material. can be properly positioned and properly aligned on the surface of the base material. In addition, since the positioning pin is made of an elastic body that can be elastically deformed, after the two clamp frame members are separated from each other in the clamped state after bonding and are brought into the unclamped state, for example, a cutter provided on the side of the mold can be used. When cutting the unnecessary part of the outer periphery of the skin material,
The skin material can be automatically removed from the positioning pin by the cutting action of the cutter, and the skin material can be smoothly removed without manual intervention.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIG. 1 is an enlarged longitudinal cross-sectional view of the main parts of a clamping jig showing an unclamped state of the skin material, and FIG. 2 is a schematic configuration diagram of a laminate forming apparatus equipped with a clamping device. , FIG. 3 is a perspective view of the clamp jig. FIG. 4 is a view corresponding to FIG. 1 of a conventional clamping jig showing a state in which the skin material is clamped. 6... Movable clamp frame member, 7... Fixed clamp frame member, 9... Clamp jig, 10... Positioning pin, 11... Fitting hole, A... Clamp device,
W...Skin material, w1...Engagement hole.

Claims (1)

[Scope of utility model registration request] When bonding a skin material to the surface of a base material, the clamp device has a frame-shaped clamping jig that clamps and holds the skin material in an expanded state by sandwiching the outer peripheral part of the skin material from both sides between a pair of clamp frame members. hand,
One clamp frame member of the above clamp jig includes:
A positioning pin made of an elastic body that can be elastically deformed is provided to protrude toward the other clamp frame member, and a fitting hole into which the positioning pin fits is formed in the other clamp frame member. When clamping, by fitting the positioning pin into the engagement hole formed in the skin material, the skin material is sandwiched from both sides by both clamp frame members, and positional displacement is prevented. On the other hand, when removing the skin material from the clamp jig, pull the skin material in an unclamped state with the locating pin released from the fitting hole to make the locating pin elastic. 1. A clamping device for a skin material, characterized in that a positioning pin is disengaged from an engagement hole by being deformed.