JPS5953771A - Cutting apparatus - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a cutting device for sheet-like sewn products such as quilted garments.

Layered sheet-like sewn products, such as the skin of vehicle seats, are made by layering outer fabric such as leather, sheets of elastic material such as urethane, and lining fabric, and sewing them together in the longitudinal direction using a sewing machine and sewing machine. It is formed by cutting the material to the required width.

However, when this layered material is cut, the seams fray at the cut edges and the sewn fabric peels off, making it unusable. Conventionally, the material was cut by leaving an extra fraying margin on both sides of the required cutting width, but the fraying was prevented. Leaving an extra margin required more wood, resulting in wasted material and was economically disadvantageous.

Therefore, the present invention has been made in view of this point. For example, in the material of the skin of a vehicle seat, both the front and back fabrics and sewing threads are made of 4F4I fat material and resin fiber, and the elastic material interposed between them is made of urethane resin. The cutting blade is designed to be heated so that it can be melted in a hot bath, and when cutting the material, the cutting edge is melted and the end of the sewing thread is cut. To provide a cutting device which cuts an overlapping material with a cutting blade heated to prevent fraying by welding to front and back fabrics or an elastic material.

That is, the present invention applies cutting force to the support in the longitudinal direction.
In addition to attaching it to the oJ function, 'F' is attached to both ends of this cutting blade.
The 4L electrode terminal is fixed and the cutting blade is heated by applying a voltage between the electrode terminals.

An embodiment of the present invention will be described below with reference to the drawings.

In the figure, (1) is a cutting blade, and the blade part (1a) is formed in an inclined shape. (2) is a support for the cutting blade (1), and the lower surface of the hollow beam (3) formed by the touch plate is covered with a heat-resistant resin material (4) such as Teflon, and a heat-resistant electrical insulating plate (such as mica) ( 5) and a mounting body (7) formed by laminating metal plates (6).
) is fixed, and a heat-resistant electrical insulating material such as mica is laminated on multiple parts of the lower surface of this mounting body (7), and a gap approximately equal to the thickness of the cutting blade (1) is formed in the lateral direction of the central part. A presser body (8) having a shape is attached. Also, the mounting body (7
) is provided with spacing parts b and b' in a part of the side of the image,
Inside these gaps b and b', guide bodies (10° (10 degrees are located so as to be slidable in the horizontal direction) are attached to the upper edge of the cutting blade (1) on both sides of the upper edge of the cutting blade (1). Guide grooves (10a), (10a) are formed on the front and rear surfaces of the guide body α0, (10'), and a cutting blade (1) is formed in the guide grooves (10a), (10a).
The phloem of the holding body (8) is inserted into the gap a of the holding body (8), and the guide body (10) (10 is the gap part b of the holding body (7),
The engaging body (11) is fixed to the front and rear surfaces of the beam (3) while being located inside b', (11 inner end edges (lla),
(1) are engaged so that the cutting blade (1) is laterally slidably attached to the support (2).

Then, one end of the cutting blade (1) and one bracket of the support body (2) (12 protruding bottles (13) are provided with a wire between them, and the other end and the other platen) (1→ By tensioning the spring θ→ between the pin α→ protruding from the support body (2), the cutting blade (1) can be pulled in the horizontal direction with respect to the support body (2). Electrode terminals (16), (16') are fixed to both ends of the cutting blade (1). One end surface of the cutting blade (1) is brought into contact with the front surface of the cutting blade (1), and the screws (17) and (17') are tightened from the rear side, and the vertical parts 706b), (16b')e
A dovetail member (18) is attached to the mounting body (7) of the support body (2).
, (18') so as to be slidable in the lateral direction, and lead wires are connected to the other ends of the horizontal parts (16a) and (16a').

(12), (12')
The cylinders (20) and (20
') moves up and down.

0! ■ is a presser frame placed below the cutting blade (1), and has a wide rectangular window hole (A) on the bottom through which the cutting blade (1) passes; The pressing blades (c) (23 of them are integrally formed, and this presser frame body 21) is placed between the lower surfaces of both sides and the lower frame (c). The cylinders (25a) were each fitted with one shot.

(25b), (25a, (25b) moves up and down.

(g) is a lower mold located below the presser frame warp and installed on the substrate, and has a blade groove (26a) which is the lower blade and faces the cutting blade (1) in the center horizontal direction. is formed, and the presser blade (c) of the presser frame body 0◇ is inserted back and forth between the blade grooves (26a) and the
(Two relief grooves (26b), (26b) are formed opposite to each other.

Next, the operation of the cutting device of this example configured as described above will be explained.

First, using a multi-axis sewing machine, an elastic intermediate material (31c) such as urethane is sandwiched between a front fabric (31a) such as leather and a back fabric (3113) made of resin fiber, and a sewing thread (31d) made of resin fiber is sandwiched between the outer fabric (31a) such as leather and the lining fabric (3113) made of resin fiber.
) is inserted between the presser frame Q]) and the lower die QQ, and the presser frame Q]) is passed through the cylinders (25a) and (25b). , (25
a. When you move the pusher blade (25b) down, the pusher blade (23
), (23') is the material 0η escape from the lower mold c20? +
``p (26b) + (Push the support (2) into the cylinder in this state), (26b)
By moving the cutting blade (1) downward by 0 to press the cutting blade (1) onto the material 0]) and moving the support (2) further downward, the cutting blade (1) presses the material 0]) onto the lower mold (c). The cutting is performed using the blade groove (26a).

In this case, the cutting blade (1) has electrode terminals (16), (16
By applying a voltage through IF and heating it to about 500°C, the cut end surface of the material G is heated and melted by the cutting blade (1), and the sewing thread (31d) is attached to the front and back fabrics (31a),
(31b) or welded to the intermediate material (31a) to prevent fraying.

In addition, in this cutting, the cutting blade (1) is formed so that the blade part (1a) is inclined to one side, so it cuts diagonally to the material 0υ, and the front and rear of the cutting part of the material OI) is pressed by the pressing blades (23) and (23' 0
The cutting part of η is cut with a cutting blade (
1), the cut end surface is separated from the cutting blade (1), and is not melted more than necessary.

In addition, when the cutting blade (1) is heated, it thermally expands and extends in the longitudinal direction, but the cutting blade (1) is attached to the support (2).
) is pressed from the front and back by the presser body (8) against the mounting body (7), and the guide body 0@ attached to the cutting blade (1)
.

(10 are engagement bodies (lρ,
The electrode terminals (16), (16) are fixed to the cutting blade (1) and are engaged with the electrode terminals (11') to move in the direction of lateral force.
Since the cutting blade (1) can be slid laterally with respect to the mounting body (7) of the handle support (2) via the dovetail members (18) and (18'), the cutting blade (1) can only be moved laterally. It can stretch and maintain straightness without meandering. Also cutting blade (1)
When the cutting blade (1) is extended, the spring 09 will contract by that amount, so the cutting blade (1) will be maintained in a traction and support state.
Therefore, even if the cutting blade (1) is heated and undergoes thermal expansion, the material 0]) can be cut without any problem.

In addition, since the part of the support (2) in contact with the cutting blade (1) is made of heat-resistant insulating material, the cutting blade (1) is attached to the hollow beam (3) that maintains the strength of the support (2). ) is hardly affected by electrical heating.

In addition, the cutting material 0]) is not limited to resin-made front and back fabrics, intermediate materials, and sewing threads that are layered together, but if at least i+i threads are made of resin, i:
The cut ends of the filament threads are melted and deformed, thereby preventing fraying and fraying that are larger than the seam holes in the front and back fabrics.

As described above, the cutting device according to the present invention cuts the material by heating the cutting blade 10I, so that the cut end surface of the material is melted in the bath, and not only the fraying of the cut end surface of the six lining fabric itself but also the fraying of the sewing thread is prevented. There is no need to leave a fraying allowance when cutting the overlap line material as in the past, so the material can be cut according to the regular dimensions, waste of material can be avoided, and product costs can be reduced.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of the cutting device l; 11 according to the present invention;
Figure Fi is an enlarged central vertical sectional view with the material omitted in Figure 1, Figure 3 is a perspective view with some parts omitted, Figures 4 A and B
3 is an enlarged sectional view taken along lines A-A and B-B in FIG. 3, FIG. 5 is a front view of a portion of the material in a cut state, and FIG. 6 is a side sectional view of a portion of the material in the same cut state. In the figure, (1) is the cutting blade, (2) is the support body, (8) is the presser body, 0 (J. (10 is the guide body, (11), (11 is the engaging body, (1
, 6), (16 is the electrode terminal, (20), (20 is the cylinder, I2) is the presser frame body, (g). (23 is the presser blade, (25a), (25b), (25a) '
), (25b') are cylinders, Q→ is the lower mold, OI) is 31jneω material. Hidemu Matsukuma 1・- (,・2: 2! Chi Figure 1 (

Claims (1)

[Claims] The cutting blade is attached to the support so as to be slidable in the longitudinal direction, electrode terminals are fixed to both ends of the cutting blade, and the cutting blade is heated by applying a voltage between the electrode terminals. A cutting device that is characterized by