JPH0129674B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a method and apparatus for punching soft materials, and is suitable for punching sheet rubber, rubberized cloth, cloth, soft synthetic resin molded materials, etc. This allows the punching process to be performed without damaging the punching die blade.

Conventional Technology Conventionally, in order to punch out soft materials as described above, a punching board made of semi-hard synthetic resin such as cardboard, vinyl chloride, or acrylic was used to be made of a strong hard material such as iron or concrete. A soft object is placed on the top surface of the punching plate placed on a substrate that does not have cushioning properties, and the lowest point of the punching die is 0.2mm thicker than the thickness of the punching plate. The method used was to punch out an arbitrary shape by pressing down and pressing down to a certain extent. According to this conventional method, the blade of the punching die is recessed in the punching plate, and the position where the blade is formed must be constantly moved to avoid contact with the soft material during the next punching, which is time-consuming. At the same time, the punching board must be replaced every certain number of punches.
It is expensive and uneconomical, and has the disadvantage that the cutting edge of the punching die is severely worn out. In addition, in order to eliminate such drawbacks, Japanese Patent Application Laid-Open No. 1983-1981 proposed by the present applicant
No. 180321 also exists, but although this method significantly improves the above-mentioned drawbacks, the cutting edge of the punching die still comes into contact with the punching plate, and although it is extremely rare, it does not cause contact with soft objects. , the contact is accompanied by wear and tear on the cutting edge. In addition, as in the invention described in JP-A-57-1700, only one of the two laminated sheets is completely punched out with the cutting edge of the punching die, thereby preventing contact between the punching board and the punching blade. However, if this technique is used to punch out a board consisting of only one sheet, it will require a lot of work to separate the board into individual objects in order to leave a little thickness of the board, or the punching object will be cut out. It requires a complicated mechanism to stabilize the position of the device, which has the disadvantage of increasing the size of the device.

Problems to be Solved by the Invention The present invention aims to eliminate the above-mentioned drawbacks, and aims to prevent the cutting edge of the punching die from coming into contact with anything other than the soft material to be punched and formed. The purpose is to prevent cutting and wear of the cutting edge, to easily and quickly remove the soft material after punching, and to perform punching work with the soft material to be punched in a stable position.

Means for Solving the Problems In order to solve the above-mentioned problems, the present invention has the following features:
A soft material to be punched and formed is suctioned and fixed onto the upper surface of the receiving member, which can be moved up and down, using a suction/exhaust nozzle, and a cutting blade is positioned on the bottom surface of this soft material. Set the lowermost position of this member located on the upper surface to a position where a small gap is formed between the cutting blade and the cutting blade to form a non-cutting part in the soft material without penetrating the soft material. This method uses a soft material punching method in which the uncut portion is cut by exhaust pressure from an exhaust nozzle, the soft material is blown away, and the soft material is separated from the receiving member. In addition, the device for implementing this method includes a vertically movable receiving member with a surface for placing a soft material on the upper surface for punching and forming, and a suction device for suctioning and fixing the soft material to this receiving member. a nozzle; a cutting blade positioned facing a portion to be cut of a soft object placed on a placement surface of a receiving member;
This cutting blade is located on the upper surface of the soft material and forms a small distance between it and the cutting blade when it is lowered to its lowest point, allowing the cutting blade to cut into the soft material without penetrating it. It consists of a member that forms a cutting part and an exhaust nozzle that blows pressurized gas onto the soft material having the non-cutting part, and cuts and blows off the soft material from the non-cutting part using exhaust pressure.

Function As described above, the present invention has a soft material for punching and molding fixed by suction with a suction nozzle on the upper surface of a vertically movable receiving member, and a cutting blade is located on the lower surface of this soft material. A small distance is formed between the lowermost position of the member, which is located on the upper surface of the cutting blade through the soft material, and the cutting blade, so that the cutting blade can cut into the soft material without penetrating it, Since the cutting blade is cut to a position where a non-cutting part is formed in the soft material, the cutting blade and this member do not come into contact with each other, and the cutting blade is not worn out.
There is no damage and the position of the member can be moved.
There is no need for replacement, and the soft part punched out with the uncut part left is thin, so the uncut part is cut by exhaust pressure from the exhaust nozzle and the soft material is blown away. , it can also be easily removed from the receiving member.

Embodiment An embodiment of the present invention will be described below with reference to the drawings. Reference numeral 1 denotes a receiving member, and a soft material 2 for punching and molding is shown.
A mounting surface 3 is provided on the upper surface, and a spring 5 is interposed between the lower surface and the main body base 4 to enable vertical movement. On the outer periphery of this receiving member 1, a peripheral punching die 8 is placed on the mounting surface 3 of the receiving member 1 and has a cutting blade 7 facing the cut portion 6 of the soft material 2. An inner peripheral punching die 11 is inserted into the insertion hole 10 in the center of the receiving member 1.
is slidably inserted, and the cylindrical cutting blade 12 of the inner peripheral punching die 11 is inserted into the central cut portion 13 of the soft material 2.
The protrusion 14 of the soft material 2 can be inserted into the cylinder of the cutting blade 12. Furthermore, the cutting blades 7 and 12 are positioned facing the parts to be cut 6 and 13 so that the cutting edges do not come into contact with the soft material 2 when the soft material 2 is not pressed. The shape and number of holes 7 and 12 to be installed can be arbitrarily determined depending on the shape of the soft material 2 to be punched, the purpose of molding, etc., and are not particularly important. In addition, the vertically movable member 15, which is located on the upper surface of the cutting blades 7, 12 via the soft material 2, is formed with a small distance between it and the cutting blades 7, 12 when lowered to its lowest position. The upper surface position of the stopper 17 is formed so that the portions 7 and 12 can be cut without penetrating the soft material 2 to form an uncut portion 16 in the soft material 2. In addition, the uncut portion 16 of the soft material 2 has a 0.001
It is desirable that the thickness be in the range of about 0.02 mm to 0.02 mm, and when the soft material 2 is a stretched fabric using the base fabric 18, as shown in FIG. 2, at least the base fabric 18
It is necessary to make the cutting blades 7 and 12 cut until the material is cut. Moreover, pressurized air is used for peeling after cutting with the cutting blades 7 and 12, and an intake/exhaust nozzle 2 is installed in the cylindrical inner peripheral punching die 11.
0 is inserted, and when the member 15 is lowered, the intake/exhaust nozzle 20 is set to the suction state to adsorb the soft material 2 to the mounting surface 3 of the receiving member 1 to stabilize it, and after completing punching, the outer peripheral punching die 11 The exhaust nozzle 21 located outside blows away the burr 22 part, then the exhaust nozzle 23 located above this exhaust nozzle 21 blows off the soft material 2, and finally the intake and exhaust nozzle 20 is placed in the exhaust state. As a result, the convex portion 14 of the soft material 2 is eliminated. The exhaust nozzles 21 and 23 move forward and backward as the member 15 moves up and down.

Effects of the Invention Since the present invention is configured as described above,
The cutting blade and this member do not come into contact with each other, so the cutting blade is not worn or damaged, and there is no need to move or replace the member. In addition, since the soft material for punching and molding is suctioned and fixed on the upper surface of the receiving member by suction and exhaust nozzles,
A highly reliable product can be obtained using a small and simple mechanism without causing the soft material to shift from the receiving member or performing inaccurate punching. In addition, since the uncut part of the soft part punched out with the uncut part left is thin, it is possible to cut the uncut part with the exhaust pressure from the exhaust nozzle and blow away the soft part to separate it from the receiving member. This allows the soft object to be removed from the receiving member extremely easily.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention, and FIG. 1 is a sectional view, and FIG. 2 is an enlarged sectional view showing the cutting state of the cutting blade into a soft material. DESCRIPTION OF SYMBOLS 1... Receiving member, 2... Soft material, 3... Placement surface, 6... Part to be cut, 7, 12... Cutting blade, 15... This member, 16
...Uncut portion, 20... Suction/exhaust nozzle, 21... Exhaust nozzle.

Claims (1)

[Scope of Claims] 1. A soft material to be punched and formed is suctioned and fixed onto the upper surface of the vertically movable receiving member by an intake/exhaust nozzle, and a cutting blade is positioned on the lower surface of this soft material. The lowermost position of this member located on the upper surface of the cutting blade is placed through the object, and a small distance is formed between the cutting blade and the cutting blade to cut into the soft object without penetrating it. A method for punching a soft material, characterized in that the uncut portion is cut by exhaust pressure from an exhaust nozzle to blow the soft material away from the receiving member. 2. A vertically movable receiving member with a mounting surface for a soft material to be punched and formed on the upper surface, a suction nozzle for suctioning and fixing the soft material to this receiving member, and a receiving member for placing a soft material on the mounting surface of the receiving member. The cutting blade is positioned facing the part to be cut into the soft material that is placed, and the cutting blade is located on the upper surface of the soft material through the soft material, and a small gap is formed between the cutting blade and the cutting blade when it is lowered to its lowest point. The cutting blade cuts into the soft material without penetrating it, forming a non-cutting part in the soft material, and pressurized gas is blown onto the soft material having the non-cutting part, and the soft material is removed from the non-cutting part. and an exhaust nozzle that cuts and blows away soft materials using exhaust pressure.