JPH0331528B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a punch press machine for punching a workpiece material, and more particularly to a punch press machine that can automatically change molds.

[Prior Art] A perspective view of a conventional punch press machine is shown in FIG.

The press main body 41 includes a fan-shaped turret stand 41a rotatably supported around the center of the fan-shape, and a plurality of pairs of punches 43 and dies 46 facing each other at regular intervals on the turret stand 41a. It is located.

Further, a hammer 42 is provided on the press body 41 so as to be located above the head of the punch 43.

On the other hand, in front of the press main body 41 is a workpiece material 5.
0 positioning device 45 is installed, a workpiece material 50 is fixedly supported by a carriage 45a movable in the X and Y directions, and a desired punching location of the workpiece material 50 is moved by the carriage 45a,
An arbitrary punch 43 and die 46 are selected and punched.

[Problems to be Solved by the Invention] However, according to the above punch press machine, the punch 43 and die 4 that can be placed on the turret stand 41a are
There is a drawback that the number of 6 types is limited and the total number of types cannot be increased.

On the other hand, there is a system that automatically replaces only a given pair of molds, but due to limitations in the ability and accuracy of automatic replacement machines such as robots, the replacement molds have to have a special shape, which is expensive, and the conventional It has the disadvantage of low versatility in that molds cannot be used.

Although it is desired that such automatic mold changing machines have reliable operation and improved changing speed, accuracy is particularly strict and precision in units of 1/100 mm is required.
For example, it is currently impossible to directly clamp a general-purpose mold using these automatic exchange machines and insert it into the insertion opening of the main body of the apparatus.

Therefore, the present invention aims to increase the number of molds that can be stored by separating the part that stores the molds from the press machine body, and also to use a general-purpose mold and to make the mold change more accurate and faster. The aim is to realize unmanned FMS lines for sheet metal production by taking the following steps.

[Means for Solving the Problems] Therefore, the punch press machine according to the present invention is arranged between a pair of punches 11 and a die 12 by the striking action of the hammer 4 provided on the press body 1. In a punch press machine for punching a workpiece material 5; a cylindrical punch guide 13 having a large diameter upper part and having an insertion opening 13a into which the punch 11 is inserted, and a joint part 13c formed on the lower surface of the large diameter; and; a cylindrical die holder 17 having a large diameter lower part and having a fitting opening 17a into which the die 12 is fitted and a joint part 17d formed on the upper surface of the large diameter part; and a vertical direction of the press main body 1. an upper base 2 and a lower base 3, which are fixed oppositely to each other and have openings 2a and 3a formed therethrough; a bearing and a rotation mechanism 7a on the upper base 2;
The upper disk 7 is coaxially rotatably provided by 8 and 8a, and a guide is formed in the center of the disk to communicate with the opening 2a of the upper base 2 and is formed to be slightly larger than the diameter of the small diameter part of the punch guide 13. An upper disk 7 in which a hole 7b is formed and a joint portion 7c that engages with a joint portion 13c of the punch guide 13 when the punch guide 13 is inserted from above is formed on the upper surface of the disk; bearing and rotation mechanism 9a,
10, 10a, the lower disk 9 is coaxially rotatably provided, and a guide hole 9b communicating with the opening 3a of the lower base 3 is formed in the center of the disk, and a die holder 17 is formed on the lower surface of the disk. When the die holder 17 is inserted from below, the joint portion 17d of the die holder 17
The lower disk 9 is formed with a joint portion 9c that meshes with the lower disk 9.
and; a mold storage device 20 which is provided on the side of the press body 1 and stores a large number of pairs of punch guides 13 into which various types of punches 11 and dies 12 are inserted, and die holders 17; Select one pair of the punch guide 13 and die holder 17 stored in the mold storage device 20 and move them to the positions of the upper disk 7 and lower disk 9 of the press main body 1, and attach and detach them respectively. It is characterized by comprising an automatic mold exchanger 21 that can be freely changed.

In addition, in the present invention, each joint portion 13c, 17d of the punch guide 13 and die holder 17, and the joint portion 7 of the upper disk 7 and lower disk 9 facing thereto, are provided.
c and 9c are constituted by convex grooves and concave grooves in the radial direction that are continuous in the circumferential direction and that closely mesh with each other.

[Effect] Next, the operation of the above configuration will be explained.

First, the insertion opening 1 of the punch guide 13 is manually inserted.
The punch 11 is inserted into the die 3a, and the die 12 paired with the punch 11 is inserted into the insertion opening 17a of the die holder 17. A large number of punches 11 and dies 12 having various blade shapes are fitted into the punch guide 13 and the die holder 17, and a large number of punches 11 and dies 12 are prepared and arranged and stored in the multistage mold storage device 20.

Next, the automatic mold exchanger 21 performs an automatic mold exchange operation.

The upper arm 21a of the automatic die changer 21 has a punch guide 13 into which a desired punch 11 is inserted.
The lower arm 21b also selects the die holder 17 into which the die 12 paired with the punch 11 is inserted, and transfers it from the mold storage device 20 to the device main body 1.

Then, the automatic die changer 21 includes the punch guide 1
3 into the guide hole 7b of the upper disk 7 of the device main body 1, and insert the die holder 17 into the guide hole 9 of the lower disk 9.
b at the same time.

At this time, the joint portion 13c of the punch guide 13,
While the joint part 7c of the upper disk 7 meshes,
On the other hand, the joint portion 17d of the die holder 17 and the joint portion 9c of the lower disk 9 also mesh with each other.

The above-mentioned automatic exchange operation is performed while the workpiece material is being positioned, and the hammer 4 of the press body 1 is immediately operated to punch out the workpiece material 5.

Further, the upper disk 7 and the lower disk 9 can be rotated simultaneously in the same direction by the rotation mechanism, and the punch 11 can punch the workpiece material 5 rotatably through 360 degrees.

After this punching operation is completed, the punch guide 13,
The die holder 17 is simultaneously transferred from the upper disk 7 and the lower disk 9 by the automatic die exchanger 21 and is stored in the die storage device 20 as before.

The automatic die exchanger 21 can exchange another punch guide 13 and die holder 17 by the above-described automatic exchange operation.

[Example] Hereinafter, an example of the punch press machine of the present invention will be described based on the drawings.

FIG. 1 is a perspective view showing the overall structure of a punch press machine according to the present invention. In the figure, the punch press machine includes an apparatus main body 1, a multistage mold storage device 20 spaced apart from the apparatus main body 1, and an automatic mold exchanger 21 disposed between the apparatus main body 1 and the mold storage device 20. It is composed of.

An upper base 2 and a lower base 3 are fixed in opposition to each other in the vertical direction of the device main body 1, and the upper base 2
A hammer 4 is provided above.

On the other hand, in front of the press main body 1 is a workpiece material 5.
A positioning device 6 is installed to move the machine in the X-axis direction and the Y-axis direction. This positioning device 6
A movable carriage 6a is installed at , and a workpiece material 5 is fixedly supported on this carriage 6a.

Further, as shown in the perspective view of FIG. 2, the upper base 2 and the lower base 3 are respectively formed with circular hole-shaped openings 2a and 3a that penetrate in the vertical direction.

An upper disk 7 is provided on the upper base 2 via a bearing (not shown), and a worm wheel is formed along the outer periphery of the upper disk 7 on the worm 8a of the drive shaft 8 protruding from the press body 1. 7a
are in mesh with each other, and the upper disk 7 is rotationally driven by the drive shaft 8 in the direction A or direction B in the figure.

This upper disk 7 has the upper base 2 in the center.
A guide hole 7b communicating with the opening 2a is formed. Further, a circumferential coupling portion (coupling) 7c is formed on the upper surface of the upper disk 7 in a raised position.

Further, a lower disk 9 is rotatably provided on the lower base 3 via a bearing (not shown), and similarly to the upper disk 7, it has a rotary drive shaft 10 and a worm 10.
a. This lower disk 9 can also be rotationally driven in the direction A or B in the figure by the worm wheel 9a. Further, a guide hole 9b is similarly formed in this lower disk 9, and a circumferential coupling portion (coupling) 9c is formed one step lower on the lower surface of the lower disk 9.

These upper disk 7 and lower disk 9 are driven to rotate simultaneously by rotation of rotary drive shafts 8 and 10.

A punch 11 is inserted through the punch guide 13 from above the guide hole 7b of the upper disk 7, and a die 12 is inserted from the bottom of the guide hole 7b of the lower disk 9.
is inserted via the die holder 17 by an automatic exchange operation described later.

The punch guide 13 is a member having a cylindrical shape with a large diameter at the upper part, and has an insertion opening 13a through which the guide 11a of the punch 11 is inserted in the central part, and a hole to prevent the punch 11 from rotating. A key groove 13b is formed corresponding to the key 11b. A ring-shaped receiving plate 14 is provided on the upper surface of the punch guide 13 and similarly forms an insertion opening 14a and a key groove 14b, and bolts 15 and springs 16 are provided at multiple locations (two or more locations) on the circumference.
The punch 11 is supported at a position above the punch guide 13 by a distance of a predetermined length or more (more than the stroke of the punch 11).

Further, a joint portion 13c is formed in a circumferential shape on the lower surface of the large diameter of the punch guide 13. The joint portion 13c can be engaged with the joint portion 7c of the upper disk 7, and the punch guide 13 is inserted into the guide hole 7b of the upper disk 7 in an automatic exchange operation described later.

The die holder 17 is formed into a cylindrical shape with a large diameter at the lower part, and has an insertion opening 17a into which the die 12 is inserted and an outlet 17b formed in the center, and a hole around the die 12. A key groove 17c is formed corresponding to the key 12a for locking. Further, a joint portion 17d is formed in a circumferential shape on the upper surface of the large diameter portion of the die holder 17. The joint portion 17d can be engaged with the joint portion 9c of the lower disk 9, and the die holder 17 is inserted into the guide hole 9b of the lower disk 9 in an automatic exchange operation to be described later.

The joint portion 13c of the punch guide 13 and the joint portion 7c of the upper disk 7 engage, or the joint portion 17d of the die holder 17 and the joint portion 9c of the lower disk 9.
are the same, and an example thereof will be explained with reference to the side view of FIG. 3a.

In addition, the joint part 13 of the punch guide 13 is shown in FIG.
c and the joint portion 7c of the upper disk 7 are given corresponding symbols. As shown in this figure, these joint parts 13c
The joint portions 7c and 7c each have a trapezoidal continuous tooth shape, and the pitches P ₁ and P ₂ are formed to be the same. Therefore, as long as there is no deviation of one pitch P ₁ (P ₂ ) or _more , meshing can always be performed at the _same location. This is an effective effect for absorbing errors within one piece in total. Furthermore, when engaged, as shown in the plan view of Fig. 3b, since this joint part is formed in a circumferential shape, even if some misalignment occurs in either the X or Y directions, the mutual joints always The center O of the group comrades is automatically located and this center O
The punch 11 and die 12 can be positioned above.

Therefore, it can be said that the above-mentioned joints 13c and 7c have the same structure as a dog clutch, but they differ from a clutch in that they are engaged and engaged not during rotation but during stoppage.

Next, the operation of the punch press machine of the present invention will be explained.

First, as shown in FIG. 2, a pair of punches 11 and a die 12 are inserted into a punch guide 13 and a die holder 17, respectively, by hand or the like. In this way, a large number of punches 11 and dies 12 having various blade shapes are fitted into the same punch guide 13 and die holder 17 and stored in pairs in the multistage mold storage device 20. At this time, keys 11b, 1 of punch 11 and die 12
2a is regulated by the punch guide 13 and the die holder 17, so the punch guide 13 and the die holder 17 are aligned in the same direction.

Further, it is desirable that the punch guide 13 is stored in the upper position of the mold storage device 20, and the die holder 17 is stored in the lower position.

Then, an automatic mold exchange operation can be performed by the automatic mold exchange machine 21. This mold automatic exchange machine 21
The punch guide 13 and the die holder 17 are replaced at the same time, and have a robot-like shape as shown in the figure. The upper arm 21a selects the predetermined punch guide 13, and the lower arm 21b selects the die holder 17, which is a pair with the punch guide 13, according to a command from a control device (not shown), and the mold storage device is installed. 20 and inserted into the disk 2 and lower disk 3 of the main body 1 of the apparatus.

This automatic exchange operation is performed by providing a lifting bolt 22 on the punch guide 13 as shown in the side view of FIG. It can be held and transported.

Similarly, the die holder 17 can be automatically exchanged by moving the operating piece 21b' of the lower arm 21b from the lower part in the direction of the arrow to the discharge port 17b of the die holder 17 to clamp and transfer the die holder 17.

In this way, the punch guide 13 is transferred to the upper disk 7 by the automatic die changer 21, and the joint portion 13c of the punch guide 13 and the joint portion 7 of the upper disk 7 are transferred.
Insert it from above so that it meshes with c,
The die pedestal 17 is transferred to the lower disk 9, and the die pedestal 17 is moved from the bottom (lower base 3
After the die holder 17 is inserted (from below), a slide plate (not shown) slides and supports the die holder 17 at the bottom.

At the time of this insertion, the punch guide 13 and die holder 17 are positioned in directions corresponding to the keys, respectively.

Next, the hammer 4 of the press body 1 operates to punch out the workpiece material 5, but the automatic exchange operation is completed in about 10 seconds in total, and is performed when positioning the workpiece material. Can perform high-speed punching. During this punching, the receiving plate 14 of the punch guide 13 is located above the punch guide 13 at a distance greater than the stroke of the punch 11, so that a heavy load is not applied to the upper disk 7 and the lower disk 9 during this striking. It's summery.

Also, if the upper disk 7 and the lower disk rotate in the same direction at the same time, the punch 11 will not move against the workpiece material 5.
Can be punched with 360° rotation.

After this punching operation is completed, when replacing the mold, the slide plate is retracted, and the arm 21 simultaneously transfers the punch guide 13 and die holder 9 from this disk and stores them back in the mold storage device 20. do.

Then, the automatic mold exchanger 21 can exchange another punch guide 13 and die holder 17 again by the above-mentioned automatic exchange operation.

〔Effect of the invention〕

As explained above, according to the punch press machine of the present invention, a pair of punches and a die are selected from the magazine-type mold storage device 20 by the robot-type automatic mold changer 21, and the pair of punches and dies are selected from the magazine-type mold storage device 20, 1
In the punch press machine, each pair of punches and dies of many types in the mold storage device 20 are inserted into a cylindrical standardized punch guide 13 and a die holder, respectively. 17, it can be selectively taken out and inserted into a predetermined facing position of the punch press main body 1 to perform punching operation.
At the time of selection and insertion, there is no need to temporarily separate the punch and punch guide 13 from the die and die holder 17 and hold them separately, thereby increasing the exchange speed (10 seconds based on the positioning width of the workpiece). It also has punch guide 13 and die holder 1.
This has the effect that a space and a mechanism for separately holding 7 are not required.

In addition, since each punch and die is always inserted and used in a predetermined opposing position of the punch press main body 1 via a standardized punch guide 13 and die holder 17, the types of punches and dies are different. Can be diversified.

Furthermore, the punch guide 13 is formed in a cylindrical shape with a large diameter at the upper part, and a joint part 13c is formed on the lower surface of the large diameter, and the die holder 17 is formed in a cylindrical shape with a large diameter at the lower part, and the large diameter The upper disk 7 and the lower disk 9 of the punch press main body 1 have a joint portion 17d formed on the upper surface of the punch press body 1, into which the punch guide 13 and die holder 17 are inserted. , 17d are the joint parts 7c, 9c, which are formed by convex and concave grooves that closely engage with the radial concave grooves and protrusions continuous in the circumferential direction of each of the joint parts 13c, 17d. From where I am,
The punch and the punch guide 13 and the die and the die holder 17 have a structure that allows them to be easily attached and removed from the above-mentioned predetermined positions of the punch press machine body 1, and are not misaligned with the upper and lower disks 7 and 9 of the punch press machine body 1. There is an effect that the punching operation can be performed by reliably rotating together.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing the punch press machine of the present invention, Fig. 2 is a view showing the insertion of the punch and die, Figs. 3 a and b are side views and plan views showing the joint part, Fig. Figures a and b are views showing automatic exchange, and Figure 5 is a perspective view showing a conventional punch press machine. 1...Press machine main body, 2...Upper base, 3...
Lower base, 4...Hammer, 5...Work material, 7
...Upper disc, 7c...Joint part, 9...Lower disc, 9c...Joint part, 11...Punch, 12...
Die, 13...Punch guide, 13c...Joint part, 17...Die holder, 17d...Joint part, 2
0...Mold storage device, 21...Mold automatic exchange machine.

Claims (1)

[Scope of Claims] 1. In a punch press machine that punches a workpiece 5 disposed between a pair of punches 11 and a die 12 by a striking action of a hammer 4 provided on a press body 1; It has an insertion opening 13a into which the punch 11 is inserted, and a cylindrical upper part with a large diameter, and a joint part 13c consisting of radial protrusions and grooves continuous in the circumferential direction is formed on the lower surface of the large diameter. The punch guide 13 has a fitting opening 17a into which the die 12 is fitted, and a lower portion having a joint portion 17d formed of a convex groove and a concave groove in the radial direction continuous in the circumferential direction on the upper surface of the large diameter portion. a large-diameter cylindrical die holder 17; an upper base 2 and a lower base 3 that are fixed to face each other in the vertical direction of the press main body 1 and have openings 2a and 3a formed therethrough; Bearing and rotation mechanism 7a on the upper base 2,
The upper disk 7 is coaxially rotatably provided by 8 and 8a, and a guide is formed in the center of the disk to communicate with the opening 2a of the upper base 2 and is formed to be slightly larger than the diameter of the small diameter part of the punch guide 13. A hole 7b is formed on the upper surface of the disk, and when the punch guide 13 is inserted from above, a concave groove and a convex groove in the radial direction continuous in the circumferential direction are formed, which tightly mesh with the joint part 13c of the punch guide 13. an upper disk 7 on which a joint portion 7c is formed; a bearing and rotation mechanism 9a on the lower base 3;
10, 10a, the lower disk 9 is coaxially rotatably provided, and a guide hole 9b communicating with the opening 3a of the lower base 3 is formed in the center of the disk, and a die holder 17 is formed on the lower surface of the disk. When the die holder 17 is inserted from below and held fixed, the die holder 17
A joint part 9c consisting of a concave groove and a convex groove in a radial direction continuous in the circumferential direction and closely meshes with the joint part 17d of the joint part 9c.
A lower disk 9 is formed; A punch guide 13 and a die holder 17, which are provided on the side of the press body 1 and into which various types of punches 11 and dies 12 are inserted in advance, are housed in pairs. A mold storage device 20; one pair of punch guides 13 and die holders 17 stored in the mold storage device 20 is selected and the positions of the upper disk 7 and the lower disk 9 of the press main body 1 are determined. A punch press machine comprising: an automatic die changer 21 which can be moved up to and detached from each other;