JPH0722920B2 - Equipment for cutting soft objects - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION A. Object of the Invention (1) Field of Industrial Application The present invention is to punch a central portion of a tape-like soft material that can be melted by heat, such as a print name, a woven name, and an embroidery woven fabric into a predetermined shape. Or, it relates to a cutting device for cutting into a predetermined length.

(2) Conventional technology The conventional cutting device for punching the above tape-shaped soft material into a predetermined shape is such that an upper / lower body, in which a heater is installed inside, is mounted via a spring to an elevating / lowering body that is vertically driven along a guide column. It has a structure in which a lower mold that elastically supports and cooperates with the upper mold is fixed to a substrate to which the soft material is intermittently fed, and a soft material sandwiched between the upper mold and the lower mold is heated by a heater. It is configured to melt and cut with the heat of the upper mold.

(3) Problem to be Solved by the Invention However, the above-described conventional cutting device has a disadvantage that the spring elastically supporting the upper die on the lifting body is deteriorated in a short time by the heat of the heater for heating the upper die. . Further, since the upper die is supported by the elevating body that moves up and down along the guide column via the spring, the upper die is supported by the play between the guide column and the elevating body and the rattling between the elevating body and the upper die. In some cases, it became unstable, and the beautiful cut surface could not be obtained.

The present invention has been made in view of the above circumstances, and provides a soft material cutting device capable of preventing deterioration of a spring due to heat of a heater and preventing backlash of an upper die to obtain a beautiful cut surface. The purpose is to provide.

B. Configuration of the Invention (1) Means for Solving the Problems In order to achieve the above object, the present invention provides an upper mold which is connected to a driving source and is provided on an elevating body which moves up and down, and which is heated by a heater. A soft body cutting device provided with a substrate to which a heat-meltable tape-shaped soft body is constrained, and a lower die for cutting the soft body in cooperation with the upper die, While being fixed to the lifting body, the lower die is elastically supported on the substrate by springs so as to be movable up and down, and the lower die is lowered together with the upper die by the pressing force of the lower die. Characterize.

(2) Operation According to the present invention having the above-described configuration, when the tape-shaped soft material supplied onto the substrate reaches the upper portion of the lower die elastically supported on the substrate via the spring, the tape-shaped soft object is connected to the drive source. The upper die provided on the vertically moving body moves downward toward the lower die. As a result, the soft material is sandwiched between the upper mold and the lower mold, and is melted and cut by the heat of the upper mold heated by the heater. At that time, the lower mold pressed by the upper mold as the upper mold descends descends from the substrate against the elastic force of the spring, and the cutting edge of the upper mold that cuts the soft material is placed on the substrate together with the lower mold. It further descends from the position of the restrained soft object. As a result, cutting of the soft material is surely performed, and it is possible to prevent molten debris from being attached to the upper mold and the lower mold.

(3) Example An example of the present invention will be described below with reference to the drawings.

1 and 2 show an apparatus for cutting a soft body according to an embodiment of the present invention, and an overall front view showing a state before cutting and a state after cutting the soft body, and FIG. 3 shows cutting. It is a perspective view of a tape-shaped soft body.

As shown in FIG. 3, a tape-shaped soft body T formed of a heat-meltable material such as a print name, a woven name, and an embroidery woven fabric.
Is wound around a cylindrical core metal R in a roll shape, and is sequentially drawn out from one end of the core metal R to punch out a product W such as a patch with a heat cut mold composed of an upper mold and a lower mold described later. .

As shown in FIG. 1, a flat plate-shaped substrate 2 is horizontally supported on the upper ends of columns 1 standing on the floor. The substrate 2 a plurality of guide posts 3 having a flange 3 ₁ is erected vertically is secured by a nut 4 at the lower end, the guide post 3
An elevating body 5 is supported so as to be vertically movable along. A lower end of a spring 10 is connected via an adjusting screw 9 to the other end of a swinging arm 8 which is pivotally supported at one end via a pivot 7 on a bracket 6 provided on one of the columns 1. The upper end of 10 is connected to the lower surface of the substrate 2. A disk-shaped cam follower 12 rotatably supported in the middle of the swing arm 8 via a rotary shaft 11.
Is a drive shaft that is connected to a drive source (not shown) and driven to rotate.
An eccentric cam 14 fixed to 13 is pressed by the elastic force of the spring 10. The connecting shaft 15 provided near the tip of the swing arm 8 and the connecting shaft 16 provided on the side surface of the lifting body 5 are the substrate 2
It is connected by a connecting rod 17 passing through the holes 2 ₁ formed on. As a result, when the drive shaft 13 is rotated, the swing arm 8 swings up and down around the pivot shaft 7 via the cam follower 12 that contacts the eccentric cam 14, and the swing arm 8 is connected to the swing rod 8 via the connecting rod 17. The connected lifting body 5 periodically moves up and down along the guide column 3.

An upper mold 19 mounted on the lower surface of the lifting body 5 via two mounting bolts 18 accommodates a cylindrical heater 20 in its upper part and punches the soft object T in a patch shape at its lower end. Equipped with upper blade 21. On the other hand, in the center of the substrate 2 under an opening 2 ₂ is formed so as to face the upper die 19, through the lower mold support member 22 which is welded to the bottom of the opening 2 ₂ vertically movable guide Spring 24 with bolt 23
A lower die 25 that cooperates with the upper die 19 via the above is elastically supported so as to be vertically movable within a limited range. When the upper mold 19 is separated upward, the upper surface of the lower mold 25 is flush with the upper surface of the substrate 2 and forms a guide surface for supplying the soft material T.
Then, when the upper die 19 is lowered, the lower die 25 pressed by the upper die 19 is slightly lowered from the upper surface of the substrate 2 while compressing the spring 24. The soft material T is restrained on the upper surface of the substrate 2 by a known means.

Next, the operation of the embodiment of the present invention having the above configuration will be described.

The tape-shaped soft body T rewound from the core R is intermittently supplied along the upper surface of the substrate 2 by a feeding device (not shown), and the punching position is the upper part of the lower mold 25 as shown in FIG. Located at and stop. At this time, the cam follower 12 pressed by the large-diameter portion of the eccentric cam 14 descends, the swing arm 8 swings against the spring 10 to the position shown in FIG. 2, and the connecting rod 17 is attached to the swing arm 8. The lifting body 5 connected via the upper mold 19
At the same time, it descends along the guide column 3. When the upper mold 19 descends, the soft object T supported by the lower mold 25 that is flush with the upper surface of the substrate 2 is pinched between the upper mold 19 and the upper blade of the upper mold 19 heated by the heater 20. It is melted and cut by 21. The upper die 19 continues to descend slightly after the soft material T is clamped between the lower die 25 and the lower die 25, and lowers the lower die 25 below the upper surface of the substrate 2 against the spring 24 as shown in FIG. Push down. As a result, a shearing force acts between the punched product W and the outer peripheral portion of the soft material T that is constrained on the substrate 2, and the soft material T is reliably and beautifully cut without causing stringing and the like. , Upper mold
It is also prevented that the debris of the melted soft material T adheres to 19 and the lower mold 25.

Moreover, since the substrate 2 is fixed, even if the lower mold 25 is lowered together with the cut product W, the body of the soft material T on the substrate 2 does not move, and the soft material T is displaced to cause a feeding device or It does not affect the operation of the restraint means.

Although the embodiments of the present invention have been described in detail above, the present invention is not limited to the above embodiments, and various small design changes can be made without departing from the present invention described in the claims. It is possible.

For example, in the embodiment, the patch-shaped product W is punched out from the central portion of the tape-shaped soft product T, but it is also possible to cut this soft product T linearly at predetermined intervals. Also upper mold
The drive mechanism of the lifting / lowering body 5 that supports 19 is not limited to the one using the eccentric cam 14 and the cam follower 12, and an appropriate drive mechanism such as a crank mechanism can be adopted.

C. Effects of the Invention As described above, according to the present invention, the upper die having the heater therein is fixed to the lifting body, and the lower die that cuts the soft material in cooperation with the upper die is mounted on the substrate through the spring. Since it is elastically supported, the heat of the upper mold heated by the heater is less likely to be transmitted to the spring, and as a result, the life of the spring can be extended. Moreover, since the upper die can be directly fixed to the elevating body without using a spring, looseness of the upper die can be reduced and a beautiful cut surface can be obtained. Further, since the upper mold and the lower mold, which are melt-cut by pinching the soft material, are slightly lowered with respect to the soft material constrained on the substrate, only the reliable cutting is performed by the shearing force acting on the cutting portion. In addition, it is possible to avoid the inconvenience of the molten scraps of the molten material being attached to the upper mold and the lower mold.

Further, since the substrate does not move even when the lower die is lowered, the body of the soft object constrained on the substrate does not move, and therefore, the displacement of the soft object does not occur.

[Brief description of drawings]

1 and 2 show an apparatus for cutting a soft body according to an embodiment of the present invention, and an overall front view showing a state before cutting and a state after cutting the soft body, and FIG. 3 shows cutting. It is a perspective view of a tape-shaped soft body. 2 ... Substrate, 5 ... elevator, 19 ... upper mold, 20 ... heater, 24 ... spring, 25 ... lower mold, T ... soft object

Claims (1)

[Claims] 1. An upper mold (19) provided on an ascending / descending body (5) which is connected to a drive source and moves up and down, and is heated by a heater (20), and a tape-shaped soft body (T) capable of being melted by heat. In a device for cutting a soft body, which is provided on a substrate (2) to which is constrained, and which comprises a lower mold (25) for cutting the soft body (T) in cooperation with the upper mold (19), The upper die (19) is fixed to the lifting body (5), and the lower die (25) is elastically supported on the substrate (2) via a spring (24) so as to be vertically movable, and is moved downward. The lower mold (25) is lowered together with the upper mold (19) with respect to the substrate (2) by the pressing force of 1.