JP2001347491A - Wood pattern retaining mechanism for plate punching machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To constitute a wood pattern retaining mechanism for plate punching machine never causing a reduction in punching precision even by the use of molding wood patterns formed in various outer dimensions every molded product. SOLUTION: In this wood pattern retaining mechanism for attachably and detachably retaining plural kinds of molding wood patterns fitted to molded product differed in dimension or punch-out shape, a molding wood pattern retaining part 41 for nipping a molding wood pattern from the front and rear is formed of a fixed retaining frame 15 provided along a reference surface set on one-end sides of surface plates 3 and 4 and a movable retaining frame 16 parallel to the fixed retaining frame for extending and contracting the space with the fixed retaining frame. A pair of protruding and recessing presser members 51 and 52 for positioning the molding wood pattern in the lateral center position of the surface plates and nipping the molding wood pattern from the lateral sides is provided between the retaining frames.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of mounting a molding die between upper and lower platens and pressing a sheet-like material to be punched out of cardboard or cardboard which is intermittently fed.
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wooden mold holding mechanism for holding a molded wooden mold in a flat plate punching machine for forming a molded product subjected to a punching process of a desired shape and a crease line crease processing.

[0002]

2. Description of the Related Art A flat plate punching machine requires various types of molding dies adapted to molded products having different dimensions and shapes, and these molded wooden dies are conventionally used regardless of the size of the molded products. In this case, a plate having a common outer dimension corresponding to the size of the platen is used, and a required cutting blade corresponding to a molded product is embedded in the plate.

[0003]

On the other hand, there is a need to reduce the size of a wooden mold corresponding to a small molded product by using a plate material of a size necessary and sufficient to embed a required cutting blade corresponding to the molded product. By doing so, it is possible to obtain an advantage that the manufacturing cost of the molded wooden mold can be reduced and the storage space can be reduced, and the burden of the wooden mold replacement work can be reduced by reducing the size and weight.

[0004] In this case, it is convenient to hold the wooden mold with a pair of frame members having a variable distance from each other, since it is possible to cope with molded wooden molds of various dimensions, but it is convenient. Just by holding it, it is not possible to reliably suppress the lateral displacement of the molded wooden mold in the direction along the frame material, and in addition, applying a large holding force causes the molded wooden mold to be warped and the punching accuracy decreases. Failure occurs. Further, since the diameter of the wooden mold is reduced, it is difficult to determine the position of the wooden mold from the outside, and the adjustment of the position of the wooden mold is troublesome, and there is a problem that the replacement work is troublesome.

[0005] The present invention has been devised to solve such problems of the prior art, and its main objects are as follows.
An object of the present invention is to provide a wooden die holding mechanism for a flat plate punching machine configured so as not to cause a decrease in punching accuracy even when using molded wooden dies having various external dimensions for each molded product. . Another object of the present invention is to configure a wooden die holding mechanism of a flat plate punching machine so that the wooden die changing operation can be performed efficiently.

[0006]

In order to achieve the above object, according to the present invention, there is provided a fixed platen disposed above and below a conveying passage for a punched material sequentially conveyed to a punching position by an intermittent feed mechanism. In a flat plate punching machine that performs predetermined punching with a molding die attached between the movable platen and a movable platen to make a molded product, multiple types of molding die that are adapted to molded products with different dimensions and punched shapes are attached and detached A fixed holding frame provided along a reference plane set at one end of the surface plate for holding a replaceable wooden mold holding mechanism, and a distance between the fixed holding frame and the fixed holding frame being parallel to the fixed holding frame. With the movable holding frame to be formed, while forming a molded wooden mold holding portion for holding the molded wooden mold from front and rear, between the pair of holding frames, the molded wooden mold is positioned at the center position in the left-right direction of the surface plate, And a pair of push-backs that can move forward and backward It was assumed provided with a pressing member.

[0007] According to this, it is possible to cope with a molded wooden mold having an arbitrary size, and it is possible to reliably restrict the displacement of the molded wooden mold by holding the molded wooden mold from two directions perpendicular to each other. This makes it possible to perform highly accurate punching. In this case, if a reference plane is set at one end in the conveying direction of the material to be punched, the front-rear direction is the conveying direction of the material to be punched, and the pair of holding frames narrow the forming wooden mold in a direction along the conveying direction. The pair of holding members hold the formed wooden mold in a direction perpendicular to the conveying direction.

[0008] In particular, the molding die pressed between the pair of holding frames from one end side of the pair of holding frames in the flat plate punching machine is adjusted in advance to a predetermined position corresponding to the size of the molding die. It is possible to adopt a configuration in which the positioning is performed by one of the pressing members and the pressing is performed by the other pressing member so as to be sandwiched between the pressing members. In this case, it is desirable that the tip position of one of the holding members is configured to be able to be determined from the outside. For example, if the holding member is provided on the frame in a state of being projected to the outside, the position of the tip portion can be determined from the amount of protrusion. The position can be adjusted more easily by adding a scale.

Further, a disposal blade not directly involved in the forming of the material to be punched is provided on the other end side of the platen opposite to the reference plane in the flat plate punching machine in order to balance the pressurization at the time of punching the wooden mold. It is possible to adopt a configuration in which a balance wooden mold holding portion that holds the provided wooden mold in a detachable and replaceable manner is provided, and according to this, even when a small-diameter molded wooden mold is held in the molded wooden mold holding portion, accuracy can be improved. Good punching can be performed.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A flat die punching machine according to the present invention will be described in detail below with reference to FIGS. 1 to 6 showing a preferred embodiment of the present invention. FIG. 2 is a schematic view of a forming process by a flat plate punching machine to which the present invention is applied, FIG. 2 is a perspective view of main components of the flat plate punching machine of FIG. 1, and FIG. FIG. 4 is a perspective view of a balance wooden mold holding unit in the wooden mold holding mechanism, FIG. 5 is a sectional view of the wooden mold holding mechanism, and FIG. 6 is a top view of the wooden mold holding mechanism. Are respectively shown.

As shown in FIG. 1, in a forming process using a flat plate punching machine, a material 1 to be punched out of a large number of sheet-shaped cardboards or the like cut into a predetermined size in advance is placed on a feeder table 2 which can be raised and lowered. The material to be punched 1 is provided automatically by a feed conveyor or the like in the case of a fully automatic machine, or by a manual feed operation by an operator in the case of a semi-automatic machine. Sheets are sequentially fed one by one from the upper end to the start end of the transport mechanism B at a predetermined timing.

The fed material 1 to be punched is conveyed between the fixed surface plate 3 and the movable surface plate 4 of the punching portion C by the driving chain 6 of the conveyance mechanism portion B which is intermittently driven to travel, and temporarily stopped. In the punching portion C, a fixed platen 3 on which a molding die 5 is mounted on the lower surface and a movable platen 4 driven up and down by an elevating mechanism D perform predetermined punching of the material 1 to be punched to form a molded product 7. Thereafter, the molded article 7 is conveyed to the terminal side by the re-driven conveyance mechanism section B, and is sequentially discharged to the product discharge section E provided with the paper discharge table 8 which can be moved up and down.

FIG. 2 shows the structure of the main part of the flat plate punching machine.
The transport mechanism section B includes an endless driving chain 6 wound around sprockets 9 and 10 disposed at both ends of the material 1 to be punched along the transport direction and guide rollers 11 and 11 disposed therebetween. At an appropriate position on the outer periphery of the driving chain 6, a spike bar 13 provided with a spike 12 for engaging and retaining the upper surface of the punched material 1 as a locking and holding means for the punched material 1 is mounted.

In the punching section C, a fixed surface plate 3 is disposed above a fixed surface plate 3 above and a movable surface plate 4 below the conveyance path for the material 1 to be punched. A pair of wooden mold holders 15 and 16 are provided, and the rotation of the wooden mold setting motor 17 is transmitted to the screw shafts 14 and 14 via a power transmission mechanism including sprockets 18 and 19 and a chain 20, and the screw shafts 14 and 14 are transmitted. Wooden holder 1 on the other hand
By moving the 6 forward and backward, the distance between the wooden mold holders 15 and 16 can be changed to hold the molded wooden mold 5, and the holding force is set by the torque limiter 21.
The movable platen 4 is supported at its lower surface by a lifting mechanism D.

The elevating mechanism D includes four link arms 22 each having an upper end connected to the movable platen 4 and a lower end connected to the base 23. Each link arm 22 is mounted on a worm wheel shaft 24. Each swing arm 2 of the toggle mechanism 25
When the worm wheel shaft 24 rotates, the eccentric swing of each swing arm 26 causes each link arm 2 to rotate.
2, the movable platen 4 can be moved up and down.

A mechanism for driving and controlling the elevating mechanism D includes a worm wheel 27 for rotating a worm wheel shaft 24, a worm gear 28 and a clutch brake 29.
The motor 3 is connected to a motor 32 for intermittent driving through a wheel 30 and a belt 31 and is capable of intermittent driving control such as a pulse motor.
When the elevating mechanism D is operated by the rotation drive of the worm wheel shaft 24 by 2, the movable wooden platen 4 elevates and lowers, and the molded wooden mold 5 punches the punched material 1.

The worm wheel shaft 24 is connected to the cam index 3 via a sprocket 33 and a chain 34.
5, and the output side of the cam index 35 is connected via a torque limiter 36 to the transfer mechanism section B.
, And intermittently drives the lifting / lowering mechanism D while determining the number of rotations with the cam index 35.

As described above, the pair of wooden holders 15, 1
6 form a molded wooden mold holding portion 41 that expands / contracts the interval between each other and holds the molded wooden mold 5, as shown in detail in FIG. 3.
One fixed wooden mold holder (fixed holding frame) 15 is fixed to the fixed surface plate 3, and the other movable wooden mold holder (movable holding frame).
16 is screwed to a pair of parallel screw shafts 14, 14 extending in the conveying direction of the material 1 to be punched, and advances and retreats in the conveying direction while maintaining a posture parallel to the fixed wooden mold holder 15. The molded wooden mold 5 is pressed against the fixed wooden mold holder 15 by pressing against the side surface of the rectangular molded wooden mold 5.

The fixed wooden mold holder 15 is fixed to one end of the fixed platen 3 located on the carry-out side of the material 1 to be punched,
The surface that is orthogonal to the conveying direction and faces the molded wooden mold 5 is arranged along a reference plane that defines the mounting position of the molded wooden mold 5, and the fixed wooden mold holder 15 controls the size of the molded wooden mold 5 regardless of its size. The molded wooden mold 5 is positioned at a predetermined position along the conveying direction without being fixed, and the fixed wooden mold holder 15 and the movable wooden mold holder 16 which can move forward and backward in opposition thereto are clamped. Accordingly, a plurality of types of molded wooden molds 5 having different dimensions can be held and fixed to the fixed surface plate 3 in a detachable and replaceable manner. The molded wooden mold 5 is used by appropriately selecting a desired one from various sizes in which the cutting blades 42 are embedded in various designs.

The two wooden mold holders 15 and 16 are provided with receiving portions 43 and 44, respectively, which engage with the lower surface of the molded wooden mold 5, and these receiving portions 43 and 44 are thin so as not to hinder the punching by the cutting blade 42. Surfaces of the pair of wooden holders 15 and 16 facing each other and the fixed platen 3
The molded wooden mold 5 is restrained by the lower surface of the mold and the upper surfaces of the receiving portions 43 and 44, and is stably held and fixed to the fixed surface plate 3 (see FIG. 4).

The two-die holders 15, 16 extend in a direction perpendicular to the conveying direction of the material 1 to be punched. 16 wooden mold 5 in the direction along the longitudinal direction
Can be slid, and the molded wooden mold 5 can be taken in and out through a wooden mold entrance 46 provided in the frame 45 on the side of the wooden mold holders 15 and 16 (see FIG. 5).

Further, on the sides of the wooden mold holders 15, 16, wooden mold guide members 47, 48 for guiding the molded wooden mold 5 inserted and removed in a direction along the wooden mold holders 15, 16 are provided with wooden mold entrances 46 of the frame 45. The wooden guide members 47 and 48 are provided with support members of appropriate dimensions, such as square members, which are extended from the outer surface side of the opening edges of the wooden members.
The molded wooden mold 5 is held at an appropriate height position corresponding to the wooden mold holders 15 and 16.

The molded wooden mold holding portion 41 holds the molded wooden mold 5 by moving forward and backward between the pair of wooden mold holders 15 and 16 in a direction along the longitudinal direction, that is, in a direction perpendicular to the conveying direction of the material 1 to be punched. A pair of holding members 51 and 52 to be sandwiched are provided, and one of the first holding members 51 is a side where the molded wooden mold 5 is inserted and removed in a direction along the longitudinal direction of the wooden mold holders 15 and 16, ie, a wooden mold. The door 46 and the wooden guide members 47 and 48 are provided so as to be able to move forward and backward in contact with the wooden holder 15.
1 does not hinder the loading and unloading of the molded wooden mold 5, and the other second pressing member 52 is provided with the fixed wooden mold holder 15 on the side opposite to the wooden doorway 46 and the wooden guide members 47, 48. The spaced apart position is provided so as to be able to advance and retreat, and by properly determining the distance from the fixed wooden mold holder 15, regardless of the dimensions of the molded wooden mold 5, the molded wooden mold 5 pushed from the opposite side is surely regulated. To form a wooden mold 5
Can be positioned efficiently.

The first holding member 51 is a wooden guide member 47.
The groove-shaped portion, which is slidably supported by a support 53 fixed to the bottom surface and closed on three sides by the side surface of the fixed wooden holder 15, the upper surface of the receiving portion 43, and the lower surface of the fixed base 3, forms a square cross section. The first pressing member 51 advances and retreats, and the tip is brought into contact with the side surface of the molded wooden mold 5 inserted between the pair of wooden mold holders 15 and 16 from the wooden mold guide members 47 and 48 via the wooden mold entrance 46. Regulate the molded wooden mold 5.

The second holding member 52 is slidably supported by a support 55 fixed to the frame 54, and has a circular section along the lower surface of the fixed base 3 at a position away from the fixed wooden mold holder 15. The pressing member 52 advances and retreats, the position of the second pressing member 52 is adjusted according to the size of the molded wooden mold 5 to be mounted, and then the second pressing member 52 is preliminarily positioned at a predetermined position by the clamp 56 of the support 55. By being fixed, the tip of the second holding member 52 abuts against the side surface of the molded wooden mold 5 pushed between the pair of wooden mold holders 15 and 16, and the molded wooden mold 5 is positioned at a predetermined position. The position of the tip of the second pressing member 52 can be determined by the scale provided on the second pressing member 52.

When the molded wooden mold 5 is attached, a gap in which the molded wooden mold 5 can be smoothly slid and inserted is held between the two wooden mold holders 15 and 16 and the molded wooden mold 5. After adjusting the position of the movable wooden mold holder 16 in accordance with the size of the molded wooden mold 5, the molded wooden mold 5 is inserted between the wooden mold holders 15 and 16 from the wooden mold entrance 46. The first holding member 51 is retracted toward the wooden guide member 47 so as not to be in the way.

Next, the molded wooden mold 5 slidably held between the two wooden mold holders 15 and 16 is brought into contact with an appropriate bar or a first pressing member 51 on one side surface thereof. Push the other side until it hits the second pressing member 52. Then, the first holding member 51 is fixed by the clamp 57 of the support 53, and the movable wooden mold holder 16 is pressed at a predetermined pressure to fix the molded wooden mold 5 so that there is no play.

On the other hand, when removing the molded wooden mold 5,
After the clamp 57 of the holding member 51 is loosened, the second holding member 52 is advanced to the side of the wooden mold entrance 46 to form the wooden mold 5.
, And the molded wooden mold 5 can be removed easily.

As shown in FIG. 4, on the end side of the fixed platen 3 which is opposite to the reference plane which defines the mounting position of the molding die 5, as shown in FIG. A balance wooden mold holding portion 63 is provided for holding a balance wooden mold 62 to which a disposal blade 61 is attached so as to be detachable and replaceable.

The balance wooden form 62 has a thickness of, for example, 18 mm.
By embedding a discard blade 61 of an arbitrary shape in advance using plywood of a degree, and disposing this at the end opposite to the reference plane on which the molding die 5 is positioned, the molding die 5 is An imbalance is not generated in the pressing force when the movable movable platen 4 that has been lifted against the fixed stationary platen 3 is mounted, so that the cutting blade 42 embedded in the molded wooden die 5
However, the punched material 1 can be accurately punched.

The balance wooden mold holding portion 63 is composed of first to third receiving members 64, 65, 66 for supporting three side edges of the balance wooden mold 62 except for the molded wooden mold holding portion 41 side. The first receiving member 64 that supports the side edge of the wooden mold 62 on the carry-in side of the punched material 1 has a substantially U-shaped cross section that receives the side edge of the balance wooden mold 62, and the receiving part 67 has the balanced wooden mold. The balance wooden mold 62 is fixed to the fixed surface plate 3 so as to be in contact with the lower surface of the fixed surface plate 3 and along the lower surface of the fixed surface plate 3.

The second receiving member 65 that supports one of the side edges of the balance wooden mold 62 in the width direction orthogonal to the transport direction is
A stepped portion 69 fixed to the frame 54 such that the upper surface thereof is in contact with the lower surface of the balance wooden mold 62 and formed at the end on the carry-in side.
Engages with the notch 70 formed at the end of the balance wooden mold 62 and stops the balance wooden mold 62 when the balance wooden mold 62 is inserted, thereby defining the position of the balance wooden mold 62 in the width direction. .

The third receiving member 66 for supporting the other of the side edges of the balance wooden mold 62 in the width direction orthogonal to the transport direction, that is, the side edge on the wooden mold entrance 46 side, contacts the lower surface of the balance wooden mold 62 and An L-shaped cross section is formed so as to prevent the balance wooden mold 62 from coming off, and the stopper 71 provided at the end on the molded wooden mold 5 side restricts the movement of the balanced wooden mold 62 to the molded wooden mold 5 side. .

The third receiving member 66 is detachable by screwing it to the frame 45.
The balance wooden mold 62 can be inserted and removed in a direction orthogonal to the transport direction of the balance wooden mold, and a plurality of types of balance wooden molds having different dimensions by shifting the mounting position of the third receiving member 66 according to the size of the balance wooden mold 62. 62.

In the illustrated embodiment, a fixed platen is provided on the upper side and a movable platen is provided on the lower side, and a molded wooden mold is mounted on the lower surface of the fixed platen provided on the upper side. A fixed platen on the lower side, a movable platen on the upper side, and a molded wooden mold mounted on the fixed platen, or a movable platen on the upper or lower side. An embodiment in which a wooden mold is attached is also possible.

In the illustrated embodiment, the holding member is configured by an inexpensive manual operation. However, a configuration having a known linear motion mechanism that can be automatically controlled, for example, a configuration in which the holding member is driven by a motor via a rack and pinion mechanism is used. It is also possible to employ.

[Brief description of the drawings]

FIG. 1 shows a schematic diagram of a forming process by a flat plate punching machine to which the present invention is applied.

2 shows a perspective view of the main components of the flat plate punching machine of FIG. 1;

FIG. 3 shows a perspective view of a molded wooden mold holding part in the wooden mold holding mechanism according to the present invention.

FIG. 4 shows a perspective view of a balance wooden holding part in the wooden holding mechanism according to the present invention.

FIG. 5 shows a sectional view of a wooden mold holding mechanism according to the present invention.

FIG. 6 shows a top view of a wooden mold holding mechanism according to the present invention.

[Explanation of symbols]

 Reference Signs List A Material supply section B Transport mechanism section C Stamping section D Lifting mechanism section E Product discharge section 1 Material to be punched 2 Paper feed table 3 Fixed surface plate 4 Movable surface plate 5 Molding die 6 Driving chain 7 Molded product 8 Paper discharge stand 9 , 10, 18, 19, 33 Sprocket 11 Guide roller 12 Spike 13 Spike bar 14 Screw shaft 15 Fixed wooden mold holder 16 Movable wooden mold holder 17 Motor (for wooden mold set) 20, 34 Chain 21, 36 Torque limiter 22 Link Arm 23 Base 24 Worm wheel shaft 25 Toggle mechanism 26 Swing arm 27 Worm wheel 28 Worm gear 29 Clutch brake 30 Wheel 31 Belt 32 Motor (for intermittent drive) 33 Sprocket 35 Cam index 37 Rotating shaft 41 Molded wood mold holder 42 Cutting blades 43,44, 7 Receiving part 45, 54 Frame 46 Wooden doorway 47, 48 Wooden guide member 51, 52 Holding member 53, 55 Supporting tool 56, 57 Clamp 61 Discard blade 62 Balance wooden mold 63 Balance wooden mold holding part 64, 65, 66 Holder 69 Step 70 Notch 71 Stopper

Claims (3)

[Claims] 1. A predetermined punching operation is performed on a punched material sequentially conveyed to a punching position by an intermittent feed mechanism using a molded wooden mold mounted between a fixed surface plate and a movable surface plate disposed above and below a conveyance path. In a flat plate punching machine to be formed into a molded product, a wooden die holding mechanism for detachably holding a plurality of types of the molded wooden dies adapted to molded products having different dimensions and punched shapes, wherein A fixed holding frame provided along a reference surface set on one end side, and a movable holding frame that is parallel to the fixed holding frame and expands / contracts an interval between the fixed holding frame,
A molded wooden mold holding portion for holding the molded wooden mold from front and rear is configured, and between the pair of holding frames, the molded wooden mold is positioned at a center position in the left-right direction of the surface plate, and the molding is performed. A flat plate punching machine having a pair of movable holding members for holding a wooden mold from the left and right sides. 2. The method according to claim 1, wherein the molding wooden mold pushed into between the pair of holding frames from one end side of the pair of holding frames is adjusted in advance to a predetermined position corresponding to a dimension of the molding wooden mold. 2. The flat plate punching machine according to claim 1, wherein said holding member is positioned by said holding member, and is held between said holding members by being held by said other holding member. 3. A balance wooden mold having a discarding blade for taking a balance of pressurization at the time of punching the molded wooden mold is detachably held at the other end of the surface plate opposite to the reference plane. The wooden die holding mechanism according to claim 1 or 2, further comprising a balance wooden die holder.