JPH1071598A - Exchange and housing device for punch die and plane punching machine therewith - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate the exchange of punch dies quickly in the plane punching machine which punches plate shaped raw material into a specified shape by pressing the material onto the punch die provided with blades. SOLUTION: A holding arm 4 is provided, which holds a punch die 8 while let it be faced to a first entrance 9 to a die mounting chamber 2 so as to let it slide to the mounting chamber 2 in the horizontal direction. A die housing chamber 3 is provided for the upper part or lower part of a device main body 1. A holding arm 4 holding the following punch die 8 at its first entrance 9 is moved to the position of a second entrance 10 for the die housing chamber 3 by an elevating device 7, the following punch die 8 is thereby housed in the die housing chamber 3, and let it standby until the following action is started. When the following action is started, the punch die 8 stored in the die housing chamber 3 is taken out over the holding arm 4, it is moved to the position of the first entrance 9 by the elevating device 7 thereafter, the punch die 8 is slid in the horizontal, direction with respect to the holding arm 4, and it is inserted in the inside of the die mounting chamber 2 so as to be mounted thereto.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flat plate punching machine for punching a plate-shaped material such as cardboard into a predetermined shape by pressing it against a punching blade, and for exchanging and storing the punching die. And an exchange / storage device of the same type.

[0002]

2. Description of the Related Art Generally, when producing a paper box such as a candy or a cosmetic or a paper box such as a book case, a cardboard as a material is punched into a predetermined shape by an automatic flat plate punching machine. This automatic flat board punching machine feeds the cardboard stacked on the feeder one by one to the punching unit by the feeder board, and in the punching unit, the press plate with the cardboard set on the top rises and punches the cardboard. By pressing against the downward blade, the cardboard is punched into a predetermined shape set by the shape of the blade, and the original sheet punched into the predetermined shape is discharged through a scrap removing portion.

[0003]

The punching die attached to the punching portion has a structure in which a wooden mold having a blade of a predetermined shape is fitted into an iron frame and fixed with bolts, and is about 50 kg. It has a relatively large total weight of the order. The stamping die is replaced with a required one each time the stamped product is changed. At the time of this exchange, after the driving of the punching machine is stopped, the punching die is considerably heavy as described above, so that a worker takes up the punching die by two or three persons and places it on the fixed holding arm. Then, the punching die is pushed into the die mounting chamber while being slid on the holding arm by hand, and is mounted. For this reason, the replacement of the punching type involves a troublesome operation of lifting a heavy object, and takes a relatively long time. In addition, the driving of the punching machine must be stopped during the replacement work. This causes a reduction in the operating rate of the punching machine.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has a punching type exchange / storage device capable of easily and quickly exchanging a punching type, and a flat plate punching machine equipped with the same. The purpose is to provide.

[0005]

In order to achieve the above-mentioned object, a punching type exchange / storage device according to the present invention presses a plate-like material against a punching die which is provided with a blade and held in a die mounting chamber. An exchange / storage device which is attached to a flat plate punching machine for punching into a predetermined shape to perform exchange and storage of the punching die, wherein the punching die is opposed to a first entrance to the die mounting chamber. A holding arm for holding and sliding in the horizontal direction to the mold mounting chamber, a mold storage chamber provided at an upper portion or a lower portion of the flat plate punching machine, and a position of a first doorway of the mold mounting chamber. And an elevating device for elevating and lowering between the mold storage chamber and the position of the second entrance.

[0006] In the above configuration, since the holding arm capable of holding the punching die is provided so as to face the first entrance to the die mounting chamber, the next punching die can be assembled on the holding arm during the operation of the punching machine. Can be. That is, for the punching die, for example, an iron frame is placed on a holding arm, and then a wooden mold with a required blade is fitted into the frame, and the wooden mold and the frame are fastened with bolts. Assembled by the procedure of fixing each other. Since the punching type assembling means is performed in a state where the punching machine is driven, the operation rate does not decrease.

[0007] In the next punching die assembled on the holding arm, the holding arm is moved to the second position in the mold storage chamber by the operation of the elevating device.
After being moved to a position facing the entrance, it is stored in the mold storage room and waits until the next start. In this manner, the next punching die can be assembled in advance and stored so as not to interfere. The holding arm emptied by storing the next punching die in the die storage chamber is moved to a position facing the first entrance of the die mounting chamber by the operation of the lifting device. Then, when the previous punching operation is completed, the punching die in the die mounting chamber is once taken out onto the holding arm, and then the punching die is lifted and lowered from the holding arm.

The empty holding arm is moved to a position facing the second entrance of the mold storage chamber, and after the next punching die is taken out of the mold storage chamber onto the holding arm, the holding arm is moved to the mold mounting chamber. The punching die on the holding arm is pushed into the die mounting chamber while sliding in the horizontal direction. This makes it possible to easily and quickly perform the punching die replacement operation, shorten the time for stopping the punching machine during the replacement operation, and improve the operation rate. The previous punching die may be stored in the die storage room without being lowered from the holding arm.

[0009] Preferably, a plurality of rotary supports are provided in the mold storage chamber and slidably support the punching die with respect to the second entrance. With this configuration, it is easy to put in and take out the heavy punching type mold storage chamber.

[0010] Preferably, a plurality of rotating support groups each comprising a plurality of the rotating support members arranged on the same horizontal plane are vertically arranged in a plurality of stages to form a plurality of stages of storage spaces for accommodating the punching dies. ing. Thereby, a plurality of punching dies can be stored.

[0011] In one embodiment of the present invention, the lifting device comprises: a flat plate punching machine; a screw rod disposed on a front surface of the flat punching machine formed with the first entrance and extending vertically and screwed with the holding arm; A rotary drive mechanism for rotating the screw rod; and a guide body for moving the holding arm up and down along the screw rod as the screw rod rotates. With this configuration, the vertical movement of the holding arm can be smoothly performed by the rotation of the screw bar, and the vertical position of the punching die supported by the holding arm can be positioned with high accuracy.

Preferably, the rotation drive mechanism has a motor for rotating the screw rod, and the motor is supported by a storage box forming the mold storage chamber. According to this configuration, the rotation drive mechanism can be installed without difficulty on, for example, the upper surface of the storage box having a relatively large space.

[0013] In another embodiment of the present invention, the lifting device includes a rope for suspending the holding arm, a rope driving mechanism for moving the rope, and the holding arm for moving the rope. And a guide body for moving up and down.
Preferably, one end of the cable is connected to the holding arm, and the cable driving mechanism moves the operating member connected to the other end of the cable in a moving direction of the coin cable. And a cable driving device for moving. With this configuration,
An elevating device having a relatively simple structure can be obtained.

[0014] Preferably, the cable drive mechanism is supported by a storage box forming the mold storage chamber. According to this configuration, the rotation drive mechanism can be installed without difficulty on, for example, the upper surface of the storage box having a relatively large space.

A flat plate punching machine according to the present invention is a flat plate punching machine for punching a plate-shaped material into a predetermined shape by pressing the plate-shaped material into a punching die provided with a blade and held in a die mounting chamber, The exchange / storage device having the above-described configuration is attached to the flat plate punching machine.

[0016]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a partially cutaway right side view showing a flat plate punching machine provided with a punching type exchange / storage device according to a first embodiment of the present invention, and FIG. 2 is a front view thereof. Shows only a punching part which is a main part of the present invention in a flat plate punching machine. This flat plate punching machine includes an apparatus main body 1 and a punching type exchange / storage apparatus A mounted on an upper part thereof. A mold mounting chamber 2 is provided inside the apparatus main body 1. The punching type exchange / storage device A is attached to an upper surface of the apparatus main body 1 by an attachment member such as a bolt (not shown) to form the mold storage chamber 3, and a punch-like exchange / storage device A such as a bolt is provided on the front surface of the apparatus main body 1. A pair of left and right holding arms 4 attached to the mounting member and supporting and holding a punching die 8 generally called a chase at both left and right edges thereof, and the holding arm 4 faces a first entrance 9 of the die mounting chamber 2. An elevating device 7 for elevating and lowering between a position and a position facing the second entrance 10 of the mold storage chamber 3 is provided.

As shown in FIG. 4, the punching die 8 fits a wooden mold 12 having a blade 11 of a predetermined shape attached into a rectangular frame 13 made of iron, and also attaches the wooden mold 12 and the frame 13 to each other. They are fixed to each other by fastening bolts (not shown). FIG. 3 is a sectional view taken along line III-III of FIG. In the figure, the punching die 8 is mounted with the blade 11 facing downward in the mold mounting chamber 2, but the blade 11 is always facing upward outside the die mounting chamber 2 so as not to damage the blade 11. Handled by Usually, in the mold storage room 3,
A plurality of punching dies 8 having blades 11 of different shapes are stored.

As shown in FIG. 2, the lifting device 7 extends in the vertical direction and is fixed to the front surface 1a of the apparatus main body 1 via upper and lower mounting brackets 17 and 18 with mounting members such as bolts. An integrated guide body 14, a pair of screw rods such as a pair of ball screws 22 arranged inside the guide body 14 in parallel with each other, and a rotational drive of the ball screw 22 fixed to the upper surface of the storage box 100; And a single motor 23 serving as a power source. In this manner, the entire exchange / storage device A is detachably attached to the apparatus main body 1 by the attachment member.

As shown in FIG. 3, each of the guide members 14 has a substantially C-shaped cross section, and has a vertical opening 14a. As shown in FIG. The first doorway 9 of the mounting chamber 2 and the second doorway 10 of the mold storage chamber 3 are respectively located on opposite left and right sides and are arranged in parallel with each other. Both guides 14 are attached to the front of the apparatus main body 1, and their vertical openings 14 a
Facing away from you. Both ball screws 22 are rotatably supported by a thrust bearing 19 built in the lower bracket 18 and a radial bearing 20 attached to an upper support piece 21. The storage box 100
The rotational force of the motor 23 supported on the upper surface of the motor is passed over a toothed drive pulley 24 fixed to the drive shaft and a toothed passive pulley 27 fixed to the upper end of the right ball screw 22. Right ball screw 22 via the toothed belt 29
And the toothed passive pulley 27 and the toothed passive pulley 28 fixed to the upper end of the left ball screw 22
Is transmitted to the ball screw 22 on the left side via the toothed belt 30 bridged between the two. The two driven pulleys 27 and 28 have the same diameter, so that the two ball screws 22 rotate in synchronization with each other. These motor 23, each pulley 24, 2
7, 28 and the toothed belts 29 and 30 constitute a rotation drive mechanism 200 for rotating the ball screw 22.

As shown in FIG. 1, both holding arms 4 have a substantially rectangular flat plate shape, and are cantilevered to a lifting / lowering device 7 with one surface thereof facing each other in parallel and projecting from the front surface 1a of the apparatus body 1. It is supported so that it can move up and down freely. That is, as shown in FIG. 3, the base end 31 of each holding arm 4 located on the device main body 1 side has a cylindrical shape having an outer shape that is slidably fitted inside the guide body 14. A female screw portion 32 screwed to the ball screw 22 is formed on the inner peripheral surface of the base end portion in the cylindrical direction. Therefore, the holding arm 4 rotates with the rotation of the ball screw 22 with which the female screw portion 32 is screwed.
In a state where the rotation is prevented by the guide member 14, the guide member 14 moves up and down along the guide member 14 while sliding on the inner surface of the guide member 14.

As shown in FIG. 1, a turntable 33 is rotatably attached to the center of the holding arm 4 in the longitudinal direction via a support shaft 34 (FIG. 2) penetrating the holding arm 4. . As clearly shown in FIG. 5A showing a cross-sectional view taken along the line V-V in FIG. 2, a pair of rod-shaped support members 37 and 38
The punching die 8 is supported by the pair of support members 37 and 38 of the rotary base 33 so as to sandwich the both side edges. And is slidably held in a state of being bridged between the holding arms 4 and 4.

A small protrusion 39 is formed on the surface of one support member 38 facing the other support member 37, while a protrusion is formed at the center of the side edge of the punching die 8. A concave portion 40 into which 39 can fit is formed. On the other hand, on the surface of the other support member 37 facing the recess 40, a substantially semicircular fixing groove 41 is formed, through which a fixing pin 42 projecting from the turntable 33 so as to be able to advance and retreat is slidable in and out. ing. FIG. 5B shows a state in which the fixing pin 42 protrudes from the turntable 33 and is inserted into the fixing groove 41. At this time, the fixing pin 42 forms a wedge between the other supporting member 38 and the punching die 8. It enters the state of being driven, and the punching die 8 is clamped together with one of the support members 37 from both sides to be fixed. The protrusion 39 is formed to have a small bulging height of about 1 mm. When the fixing pin 42 is pulled out of the fixing groove 41 and retreated into the turntable 33, the punching die 8 is pressed by hand. Then, by sliding in the horizontal direction, the concave portion 40 easily gets over and fits into the protrusion 39.

As shown in FIG. 1 and FIG. 2, the surface of the punching die 8 opposite to the surface on which the blade 11 is provided,
A plurality of (four in this embodiment) hook members 43 are arranged along both left and right sides. On the other hand, FIG. 6 showing a sectional view taken along the line VI-VI of FIG.
As shown in (a), guide rails 44 for slidably engaging the hook members 43 are arranged in parallel to the left and right. Therefore, the first of the mold mounting chamber 2 is
By pushing the punching die 8 held opposite the entrance 9 into the die mounting chamber 2 by hand, the punching die 8 is moved in the die mounting chamber 2 by the hook member 43 sliding on the guide rail 44. It is moved to a predetermined mounting position.

Further, the mold mounting chamber 2 has VII-VI of FIG.
As shown in FIG.
Are provided so as to be movable up and down.
As shown in FIG. 1, three guide rails 44 are provided along the outside of each of the left and right (only the right side) guide rails 44, and escape grooves 47 formed on the side portions of the guide rails 44, respectively. It is located below the punching die 8 through (FIG. 7). After the punching die 8 is pushed into a predetermined mounting position inside the die mounting chamber 2, the latching member 48 moves upward,
The punch 8 is lifted by hooking both edges of the punch 8.
Thereby, as shown in FIG. 6B, the punching die 8 is pressed and fixed to the fixing surface 45 provided above the guide rail 44. The press platen 49 installed below the mold mounting chamber 2 in FIG. 1 moves upward with the cardboard 50 as a material set on the upper surface, and cuts the cardboard 50 into the die 8 of the die 8.
Press on 2. Thereby, the cardboard 50 is punched into a predetermined shape by the blade 11.

As shown in FIGS. 1 and 2, the inside of the mold accommodating chamber 3 can accommodate the punching dies 8 in three stages. That is, a rotating support having a plurality of (four in this embodiment) horizontal axes, for example, roller bearings 51, is provided on both wall surfaces of the punching die 8 in the storage box 100 at the respective die storage positions. Mounted horizontally. On the other hand, the punching die 8 has receiving pieces 52 projecting from the left and right sides of the frame 13 on the surface on which the blade 11 is disposed. Therefore,
When the holding arm 4 is lifted by the elevating device 7 to a height opposite to the desired mounting position of the mold storage chamber 3 and stopped, the operator manually puts the punching die 8 held by the holding arm 4 into the second entrance. When the punching die 8 is pressed, the punching die 8 is smoothly inserted into the die storage chamber 3 by the receiving piece 52 rotating the roller bearing 51 about the horizontal axis thereof and stored therein. A rotatable support group consisting of eight roller bearings 51 arranged in the same horizontal plane is provided vertically in three stages to form a three-stage storage space.

A pulse motor or a stepping motor is used as the motor 23, and the rotation of the motor 23 is controlled by a sequence controller (not shown). Thereby, both holding arms 4 are accurately positioned between the position facing the first entrance 9 of the mold mounting chamber 2 and the position facing the desired mold storage position at the second entrance 10 of the mold storage chamber 3. Up and down. for that reason,
No positioning limit switch or the like is required, and the holding arm 4 is accurately positioned and stopped.

Next, the operation of the punching machine will be described. In FIG. 1, a required punching die 8 is fixed to the die mounting chamber 2, and a thick paper 50
Is pressed, and the cardboard 50 is punched into a predetermined shape by the blade 11 of the punching die 8. While this cutting machine is working,
A punching die 8 for punching the next product having a different shape is prepared. That is, the iron frame 13 shown in FIG. 4 is attached to the two supporting members 3 of the left and right holding arms 4 shown in FIG.
7 and 38, and is held between the two holding arms 4 to be held. Next, the next wooden mold 12 on which the required blade 11 is attached as shown in FIG. 4 is fitted into the frame 13 supported by the holding arm 4, and bolts are tightened to form the wooden mold 12 and the frame 13 together. Are fixed to each other, the punching die 8 is assembled.

The assembling of the punching die 8 is performed at a position where both the holding arms 4 face the first entrance 9 of the die mounting chamber 2. Further extending downward, the first entrance 9
The mold assembly position can also be set below. By doing so, the punching die 8 can be easily mounted on the holding arm 4 stopped at a low position close to the floor surface, so that the work of loading and unloading the punching die 8 with respect to the holding arm 4 becomes easy.

Next punching die 8 on the holding arm 4
Is completed, the lifting device 7 is set to operate to ascend. Thereby, both ball screws 22 rotate synchronously by receiving, for example, a rotational force in the forward direction of the motor 23,
The two holding arms 4 into which the female screw portion 32 is screwed with the ball screw 22 always keep the same height from the solid line position in FIG. 1 and rise at the same speed, so that the punching die 8 has both side edges. It is supported by both holding arms 4 and rises while maintaining a horizontal state. When the punching die 8 is raised to a position opposite to the empty die storage position of the die storage chamber 3, the rotation of the motor 23 is stopped and both holding arms 4 are shown, for example, by two-dot chain lines in FIG. 1. Rest in position.

The punching die 8 is attached to the holding arm 4 with the blade 11 facing upward, and when the above-described lifting device 7 is operated, as shown in FIG. A recess 40 is fitted into the groove to prevent the punch 8 from sliding with respect to the holding arm 4, and a fixing pin 42 is inserted into the fixing groove 41 to clamp the punch 8 between the fixing pin 42 and the support member 38. Fix it.

When both holding arms 4 are raised to a position facing the mold storage chamber 3, the fixing pins 42 are manually inserted into the fixing grooves 41.
The punching die 8 is retracted into the turntable 33 to make the punching die 8 slidable with respect to the holding arm 4. continue,
A punch 8 held by both holding arms 4 by an operator
When the punch 8 is manually pushed in the direction of the second entrance 10 of the mold storage chamber 3 of FIG. 1, after the recess 40 of FIG. It is inserted into the mold storage chamber 3 by sliding on the member 38, and further, the receiving piece 52 is
By moving on and rolling on the upper part 1, it moves smoothly to a predetermined position in the mold storage chamber 3 and is stored in the mold storage chamber 3 in a standby state until the next start. In this manner, the next die 8 can be pre-assembled during operation of the punching machine and stored in an unobstructed place.

The holding arm 4 that has been emptied by storing the next punching die 8 in the mold storage chamber 3 is rotated from the position indicated by the two-dot chain line in FIG. To the first position of the mold mounting chamber 2.
It is made to face the entrance 9. When the previous punching operation is completed, the latching member 48 in the mold mounting chamber 2 moves down to the state shown in FIG. 7, and the punching die 8 moves from the state shown in FIG. 6B to the state shown in FIG. The hook member 43 of the punching die 8 is locked to the guide rail 44 to be in a suspended state. After the punching die 8 is once taken out from the die mounting chamber 2 in FIG. 1 onto both holding arms 4, the punching die 8 is lifted and lowered from the holding arm 4.

Subsequently, the empty holding arm 4 is raised to a predetermined position facing the second entrance 10 of the mold storage chamber 3 by the operation of the elevating device 7, and the next punching die 8 is moved out of the mold storage chamber 3. Take out on the holding arm 4. At this time, since the punching die 8 slides smoothly on the rotating roller bearing 51 and is taken out from the second entrance 10, the taking-out work is easy. This punched die 8
5A, the concave portion 40 shown in FIG. 5A is fitted into the protrusion 39 for positioning, and as shown in FIG. 5B, the fixing pin 42 is projected from the turntable 33 and inserted into the fixing groove 41. By doing so, it is sandwiched between the fixing pin 42 and the support member 38 and is fixed to both holding arms 4. After that, the holding arm 4, that is, the punching die 8 is lowered to a position facing the first entrance 9 of the die mounting chamber 2 by the operation of the lifting device 7 of FIG. 1.

When the punching die 8 is opposed to the die mounting chamber 2, the punching die 8 is positioned by fitting the projection 39 and the recess 40 in FIG. 5B, and is clamped and fixed between the fixing pin 42 and the support member 38. As shown in FIG. 1, the punched die 8 thus made is held in a direction shown by an arrow B by holding the handle 53 at the tip of the hand by a half turn so that the blade 11 (FIG. 4) faces downward. At this time, on the turntable 33, as shown in FIG.
A fixing pin 42 is located below the punching die 8. Subsequently, as shown in FIG. 5D, when the fixing pin 42 is retracted into the turntable 33, the punching die 8 is placed on the support member 37, and the recess 40 is moved from the projection 39. After being separated, the punching die 8 becomes slidable on the support member 37. In this state, the punching die 8 is pushed into the die mounting chamber 2 of FIG.
Further, the hook member 43 is moved in a suspended state to a predetermined mold mounting position in the mold mounting chamber 2 by sliding on the guide rail 44. After that, the latching member 48 moves upward as described above to fix the punching die 8. In this way, the work of replacing the punching die 8 can be performed easily and quickly.
The vertical movement of the holding arm 4 is performed by controlling the motor 23 by a control unit (not shown).

FIG. 8 is a right side view showing a flat plate punching machine according to a second embodiment of the present invention, and FIG. 9 is a plan view thereof. In these drawings, the same or equivalent components as those in FIGS. 1 and 2 are denoted by the same reference numerals, and detailed description thereof will be omitted.

The flat punching machine of this embodiment is different from the flat punching machine of the first embodiment in the structure of the lifting device 60. The lifting device 60 suspends the holding arm 4 with a cable such as a chain 63, and reciprocates a piston rod 62 by the operation of a hydraulic cylinder device such as a hydraulic cylinder 61 which is a driving source. The configuration is such that the holding arm 4 is moved up and down by running the vehicle 63. The hydraulic cylinder 61 is fixed to the upper surface of the apparatus main body 1 via pedestals 81 and 82 in a front-rear direction in which the piston rod 62 is directed rearward (to the right in FIGS. 8 and 9). The piston rod 62 is connected to a central portion of an angle-shaped operating member 64 having a U-shaped cross section.

The operating member 64 maintains a relative position perpendicular to the piston rod 62 by sliding the bearing members 67 fixed to both ends of the operating member 64 along the guide shaft 68 in the chain moving direction D. The main body 1 receives the pressing force of the piston rod 62 at the center.
Is moved back and forth. Guide rollers 7 are provided on the outer surfaces of the bearing members 67 via bearings 69.
The guide roller 70 is arranged in parallel with the guide shaft 68 and rolls on a guide rail 71 provided on the upper surface of the apparatus main body 1 to assist the smooth movement of the operating member 64. I do. The hydraulic cylinder 61, the piston rod 62, the operating member 64, and the like constitute a cable drive mechanism 300 for moving the chain 63. Among them, the hydraulic cylinder 61 and the piston rod 62 move the operating member 64 in the chain moving direction D.
10 is constituted.

On the other hand, on the front face 1a of the apparatus main body 1, a left and right integrated guide body 72 both extend in the vertical direction and
Are arranged along the left and right sides of the first entrance 9. As shown in FIG. 9, the guide body 72 has a U-shaped cross section. The upper portion of the guide body 72 is supported by the storage box 100 with a mounting member such as a bolt via a bracket 85, and the lower portion of the guide body 72 is supported on the apparatus main body 1 by a mounting member such as a bolt via a bracket 86. Have been. The storage box 100 includes the bracket 8
7, and is supported on the upper surface of the apparatus main body 1 by a mounting member such as a bolt. Thus, the entire exchange / storage device A including the holding arm 4, the elevating device 60 including the guide body 72, and the storage box 100 is detachably attached to the device main body 1 by the attachment member. A holding member 73 that slidably engages with the guide body 72 is fixed to the base end portion 31 of the holding arm 4 so as to embrace the guide body 72. As shown in FIG. 8, a pair of the holding members 73 are provided at upper and lower positions of the base 31 of each holding arm 4. The holding arm 4 moves up and down while always keeping a horizontal state and sliding on the guide body 72 by engagement of the pair of holding members 73 with the guide body 72. Guide sprockets 74 for guiding a chain 63 are mounted on the left and right sides of the upper front end of the apparatus main body 1, and one end of each of the two left and right chains 63, 63 has a base end 31 of the holding arm 4. And the other end is fixed to a bearing 69 to connect the holding arm 4 and the operating member 64. The rope is not limited to the above-mentioned chain, and a toothed belt, a belt without a toothed shape, a wire, and the like can also be used.

When raising the punching die 8 from the position of the first entrance 9 of the mold mounting chamber 2 to the position of the second entrance 10 of the mold storage chamber 3, a lifting command is given to a control unit (not shown) so that the hydraulic cylinder 61 is raised. The piston member 62 is operated to protrude rearward, and the operating member 64 is moved rearward. At this time, the operating member 64 is
7 slides on the guide shaft 68, and the guide roller 70 rolls on the guide rail 71, so that the apparatus body 1 moves smoothly toward the rear. This operating member 6
4 moves while always maintaining the posture orthogonal to the piston rod 62 as described above, and thus pulls the pair of chains 63 fixed to both ends thereof evenly backward. Thereby, the pair of left and right holding arms 4 are pulled by the chain 63 and rise. When the holding arm 4 is raised to the upper limit position shown by the two-dot chain line in FIG. 8, the holding arm 4 is detected by a proximity sensor (not shown), and the operation of the hydraulic cylinder 61 is stopped.

When the punching die 8 is lowered from the position of the second entrance 10 of the mold storage chamber 3 to the position of the first entrance 9 of the die mounting chamber 2, a lowering command is given to the control unit. The hydraulic cylinder 61 is operated to move the piston rod 62 forward (to the left in FIGS. 8 and 9). As a result, the holding arm 4 moves the piston rod 62
The lowering position of the hydraulic cylinder 61 is detected by a limit switch (not shown) when the holding arm 4 is lowered by its own weight and lowered to a lower limit position shown by a solid line.
Stop the operation of.

Instead of moving the operating member 64 by moving the piston rod 62 by the hydraulic cylinder 61, the operating member 64 may be moved by moving the screw rod by a motor to move the operating member 64. .

In each of the above embodiments, the mold storage chamber 3 is provided at the upper part of the apparatus main body 1. However, when there is a space under the apparatus main body 1, the mold storage chamber 3 may be provided at the lower part of the apparatus main body 1. , May be provided on both the upper part and the lower part. In the above embodiment, the punching die 8 is moved into and out of the mold storage chamber 3 and the mold mounting chamber 2 by a manual operation by an operator. However, this operation is automatically performed by, for example, an air cylinder or the like. It is also possible to adopt a configuration for performing this.

[0043]

As described above, according to the present invention, during the punching operation, the next punching die can be assembled on the holding arm and moved by the operation of the lifting / lowering device of the holding arm. Since a standby state can be stored in the mold storage room provided at the upper or lower part of the punching machine, it is possible to easily and quickly exchange a relatively heavy punching die when changing a punched product. it can. Therefore, the time during which the punching machine is stopped for the replacement of the punching die can be greatly reduced, and the operating rate is improved.

[Brief description of the drawings]

FIG. 1 is a right side view of a partly broken main part of an exchange / storage device according to a first embodiment of the present invention.

FIG. 2 is a front view of the same.

FIG. 3 is a sectional view taken along line III-III in FIG. 2;

FIG. 4 is a perspective view of a punching die used in the above device.

5A is a cross-sectional view taken along the line VV of FIG. 2, FIG. 5B is a cross-sectional view showing a state where the punching die is fixed by projecting a fixing pin from the state of FIG. 2A, and FIG. FIG. 4D is a cross-sectional view of the state in which the punching die has been rotated half a turn from the state of FIG.

6A is a cross-sectional view taken along the line VI-VI of FIG. 1, and FIG. 6B is a cross-sectional view of a state in which the punching die is fixed from the state of FIG.

FIG. 7 is a sectional view taken along line VII-VII of FIG. 1;

FIG. 8 is a right side view of a main part showing a replacement / storage device according to a second embodiment of the present invention.

FIG. 9 is a plan view of the same.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Device main body, 1a ... Front surface 2 ... Mold installation room, 3 ... Mold storage room, 4 ... Holding arm, 7, 60 ... Elevating device, 8 ... Punching type (chase), 9 ... 1st entrance of mold installation room. 10, a second entrance of the mold storage chamber, 11: blade, 14, 72: guide body,
22: screw rod, 23: motor, 50: cardboard (material), 5
DESCRIPTION OF SYMBOLS 1 ... Rotary support body, 61 ... Fluid pressure cylinder apparatus, 63 ... Chain (cable), 64 ... Operating member, 100 ... Storage box, 200 ... Rotation drive mechanism, 300 ... Cable drive mechanism, 3
10: cable drive machine, A: exchange / storage device.

Claims (9)

[Claims] 1. A flat plate punching machine which presses a plate-shaped material 50 into a predetermined shape by pressing a punching die 8 provided with a blade 11 and held in a die mounting chamber 2 so as to perform the punching. Exchange / storage device A for exchanging and storing die 8
A holding arm 4 for holding the punching die 8 so as to face a first entrance 9 to the die mounting chamber 2 and sliding the punching die 8 horizontally into the die mounting chamber 2, and an upper part of the flat plate punching machine. Alternatively, a mold storage room 3 provided at a lower portion, and the holding arm 4 is moved up and down between a position of a first entrance 9 of the mold installation room 2 and a position of a second entrance 10 of the mold storage room 3. Punching type exchange with devices 7, 60
Storage device. 2. The punching type according to claim 1, further comprising a plurality of rotary supports 51 disposed in the die storage chamber 3 and slidably supporting the punching die 8 with respect to the second entrance 10. Replacement and storage device. 3. A plurality of rotating support groups each including a plurality of rotating support members 51 arranged on the same horizontal plane, wherein the plurality of rotating support members are vertically arranged to house the punching die 8. A punching type exchange / storage device in which a storage space is formed. 4. The apparatus according to claim 1, wherein the lifting device 7 is
A screw rod 22 that is disposed on the front surface of the main body 1 of the flat plate punching machine where the first entrance 9 is formed, extends in the vertical direction, and is screwed with the holding arm 4; A punching type exchange / storage device comprising a drive mechanism 200 and a guide body 14 for moving the holding arm 4 up and down along the screw rod 22 as the screw rod 22 rotates. 5. The rotary drive mechanism 2 according to claim 4,
Reference numeral 00 denotes a punching type exchange / storage device in which a motor 23 for rotating the screw rod 22 is supported by a storage box 100 forming the mold storage chamber 3. 6. The lifting device 60 according to claim 1,
Comprises a rope 63 for suspending the holding arm 4, a rope driving mechanism 300 for moving the rope, and a guide body 72 for moving the holding arm 4 up and down as the rope 63 moves. A punching type exchange / storage device. 7. The cable driving mechanism according to claim 6, wherein one end of the cable is connected to the holding arm.
00 is an operating member 6 to which the other end of the cable 63 is connected.
4. A punching type exchange / storage device having a cable driving device 310 for moving the operating member 64 in the moving direction of the cable 63. 8. The cable driving mechanism 3 according to claim 6, wherein
00 is a storage box 100 forming the mold storage chamber 3
Punching type exchange / storage device supported by 9. A flat plate punching machine for punching a plate-shaped material 50 into a predetermined shape by pressing the plate material 50 against a punching die 8 provided with a blade 11 and held in a die mounting chamber 2. A flat plate punching machine comprising the punching type exchange / storage device A according to claim 1 attached to the punching machine.