JPS61142032A - Clamping for covered member onto core member and apparatus thereof - Google Patents

Abstract

PURPOSE:To automatically clip a covered member onto a core member, preventing the covered member from being damaged, by inserting the double wound R part at the center part of a clamping piece through spreading into the covered member having the core member interposed. CONSTITUTION:The clamping pieces 1 which are formed by winding a piano wire into an arbitrary annular form in nearly one and half turns, making steps, and by directing the both edges in the same direction in U-figure form are accommodated in piled-up state into an accommodation case 3. A pusher 17 pushes-out the piece 1 accommodated into the accommodation case 3 one by one, setting the center part in U-figure form of the piece 1 at the top, from a pushing-out port 5. Further, a spread- out projection 19 is formed into the projecting form onto the inside surface of the pushing-out port 5 of the pusher 17 in order to push-out the piece 1 in the spread-out state from the pushing-out port 5, and inserted into between the double wound piano wires on the both sides of the piece 1 when shifted inside the pushing-out port 5 of the piece 1. The spread-out piece 1 is pushed-out onto a cover member 22 attached with the guide plate 20 installed in projection at the position of the pushing-out port 5, and the covered member 22 is tentatively fitted onto a core member 21.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a method and apparatus for temporarily fixing a covering material to a core material.

[Prior Art] Conventionally, when fixing furniture such as a chair in a reception set by folding the covering material that covers the chair along the periphery of the core material and then driving decorative rivets into the seat, before driving the decorative rivets, First, the covering material must be temporarily fastened to the core material, and in that case, unlike office-use clips, they are generally difficult to handle due to their large size and strong spring force, and even though they are temporarily fastened, they are difficult to handle. It is necessary to install a large number of them at short intervals.

Moreover, since each of these must be attached by hand or using pliers, hammers, etc., this clamping work requires a considerable amount of time and effort. Because there is a small amount of burrs around the periphery of the clip, this burr may damage the surface of the covering material even if you are careful when working with the clip. In addition, if the clip is a wire clip, it takes a lot of time and effort, such as drilling holes at regular intervals in the flange of the core material and drilling holes to align the wire material around the periphery of the sheathing material. There was a drawback.

[Problems to be Solved by the Invention] The present invention provides a method and device for clamping a sheathing material to a core material, which can be firmly clipped without damaging the sheathing material, and which can be automatically clipped by a machine and is easy to work with. It's about getting.

[Means for Solving the Problems] The present invention provides a clamp piece in which a piano wire is wound into an annular shape of an arbitrary shape approximately one and a half times in different steps, with both ends facing in the same direction in a U shape. There is a method of expanding the double-wound R part of the clamp piece, inserting a covering material with a core material sandwiched between the double-wrap parts of the clamp piece, and clamping it. a stock means for stacking and storing clamp pieces that are rolled up to form a U-shape with both ends facing in the same direction; and a stock means for stacking and storing clamp pieces that are rolled up in a U-shape with both ends facing in the same direction; a pusher means for pushing out the clamp pieces one by one from the ejection opening; and a pusher means protruding from the inner surface of the ejection opening of the pusher means to push out the clamp pieces one by one from the ejection opening in an expanded state; The present invention provides a device for clamping a sheathing material to a core material, each having an expanding protrusion inserted between the heavily wound piano wires.

[Example] Next, the configuration of an embodiment of the present invention will be explained with reference to the drawings.

A clamp piece 1 is formed by wrapping piano wire into a ring of any shape, in this case, a circular ring, as shown in FIG. As shown in Fig. 7, they are tightly connected to each other as a stock means by melting and coating with resin, melting and coating with wax, or heat-bonding a hot-melt film. The clamp piece 1 is stored in a storage case 3 with a lid 2 in a state where it is pressed downward in FIG. The storage case 3 is held in a position in which it can be pushed out from a projection opening 5 formed at one end of the lower part of the storage case 3 (leftward).

A cylinder case 6 for forming an air cylinder is press-fitted to the rear of the lower end of the storage case 3 in which the clamp piece 1 is stored (towards the right in FIG. Due to the movement of the spool 14 for the air switching valve 13 due to the rotation of the handle 11 which is rotatable around the piston 10 against the biasing force of the spring 12, the spool 14 for the air switching valve 13 is moved forward against the biasing force of the spring 15, and the tip of the piston rod 16 is moved forward. One clamp piece 1 is pushed out from the projection port 5 through the pusher 17, and the spool 1 is pushed out by the return of the handle 11 by the biasing force of the spring 12.
4 returns, atmospheric pressure is introduced into the air cylinder 8 from the air hole 18, and the piston 9 is moved by the spring 15.
The clamp piece 1 in the storage case 3 is returned by the force, and in this returned state, the entire clamp piece 1 in the storage case 3 is moved one pitch downward by the urging force of the spring 4, and the next clamp piece 1 is prepared for extrusion.

An expansion protrusion 19 for extruding the clamp piece 1 in an expanded state is provided on the inner surface of the ejection opening 5 through which the clamp piece 1 is pushed out in this manner. When moving, the clamp piece 1 is inserted between the double-wound piano wires on both sides (section 0 in Figure 6), causing the clamp piece 1 to protrude in an expanded state, and the expanded clamp piece 1 moves to the protrusion opening 5 position. For example, the covering material 22 is pushed out onto the covering material 22 covered along the core material 21 of a chair, which is in contact with the guide plate 20 protruding from the
is temporarily fixed to the core material 21.

The clamp piece 1 of this embodiment can be made into any shape other than the circle shown in FIGS. 4 to 6, such as a rectangular or triangular shape, or it can be shaped like a piano wire as shown in FIG. By shifting the top and bottom back and forth, temporary tightening work can be easily done by hand, and the clamping device shown in FIG. It is also possible to replace the clamp device with an electromagnetically driven clamp device that moves the plunger 25 for pushing out the clamp piece 1 against the biasing force of the spring 26 by the excitation of the clamp piece 1 .

[Effects of the Invention] The present invention provides a clamp piece in which a piano wire is wound in an annular shape of an arbitrary shape approximately once and a half in different steps, with both ends facing in the same direction in a U-shape, and a double-wound R in the center of the clamp piece is formed. By inserting the core material into the sheathing material while expanding the parts, the sheathing material can be firmly and automatically clipped to the core material without damaging the sheathing material, and automatically and easily by mechanization.

[Brief explanation of the drawing]

FIG. 1 is a cutaway front view of one embodiment of the present invention, FIG. 2 is a plan view thereof, FIG. 3 is a left side view thereof, FIG. 4 is a front view of the clamp piece 1, and FIG. 6 is a view taken from arrow B in FIG. 4, FIG. 7 is a front view showing the connected state of the clamp piece 1, and FIG. 8 is a view taken from the direction of arrow B in FIG.
FIG. 9 is a partially cutaway front view of another embodiment of the clamp device. 1... Clamp piece 3... Storage case 5...
・Protrusion port 8...Air cylinder 11...
Handle 13...Air switching valve 17...
Pusher 19... Expansion protrusion 20... Guide plate 21... Core material 22... Covering material 23...
·Limit switch

Claims (6)

[Claims] (1) Expand the double-wound R part at the center of the U-shape of the clamp piece, which is made by winding the piano wire into an arbitrary-shaped ring approximately once and a half in different steps, with both ends pointing in the same direction in a U-shape. Open it and
A method for clamping a sheathing material to a core material, which comprises inserting and clamping a sheathing material sandwiching a core material into a double-wound portion of a clamp piece. (2) The method of clamping a covering material to a core material according to claim 1, wherein the double-wound R portion of the U-shaped center portion of the clamp piece is shifted back and forth. (3) A stock means for stacking and storing clamp pieces formed by winding a piano wire into a ring shape of an arbitrary shape approximately once and a half, with both ends facing in the same direction in a U-shape; a pusher means for pushing out the clamp pieces one by one from the ejection opening with the U-shaped center portion of the clamp piece as the tip; A device for clamping a covering material to a core material, characterized in that it includes an expanding protrusion formed in a protruding manner and inserted between the double-wound piano wires on both sides of the clamp piece when the clamp piece moves into the ejection opening. (4) The core material according to claim 3, characterized in that a guide plate for guiding the clamp piece onto the covering material along the core material is provided at the protrusion opening of the pusher means. Clamping device for cladding. (5) The device for clamping the covering material to the core material according to claim 3 or 4, wherein the pusher means is driven by air pressure. (6) The device for clamping a covering material to a core material according to claim 3 or 4, wherein the pusher means is electromagnetically driven.