JP2534548Y2 - Punch press - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a punch press capable of saving a work table space and having a large number of punches and dies.

[0002]

2. Description of the Related Art Conventional punch presses are often of the turret type, and are composed of a table for supporting a plate material and a turret portion having an upper die and a lower die.
The table is provided with a moving mechanism in the X-axis direction and the Y-axis direction for positioning the plate material at the punch position of the turret portion. First, an upper mold as a predetermined punch and a lower mold as a die. Is rotated to the punch position to determine the position, and then the processing position of the plate material is positioned by the moving device, and placed between the upper turret and the lower turret having the upper die and the lower die, and the desired punching processing is performed. Had gone.

[0003]

However, in the above-described conventional punch press, since the punch position is determined, the plate must be moved in the X-axis direction or the Y-axis direction by a moving device. The table on which the table was to be mounted had to provide at least four times the space of the plate.

In the turret type punch press described above, in order to replace a plurality of upper dies provided on an upper turret and a plurality of lower dies provided on a lower turret, the upper turret must be removed and replaced. And there are drawbacks such as requiring extremely complicated man-hours.

The present invention has been made in view of the above circumstances, and its purpose is to reduce the work table space and provide a large number of upper dies (punches) and lower dies (dies). Another object of the present invention is to provide a punch press that can easily replace the punch press.

[0006]

In order to achieve the above object, a punch press according to the present invention comprises a punch holder having a plurality of punches mounted on an upper stage between two portal frames provided in parallel with each other. A transfer device for punches arranged and circulated; a die holder provided with the same number of dies corresponding to the punch holders provided in a lower stage; a transfer device for die to be circulated provided; At a position corresponding to the transfer device, a guide for the punch and a guide for the die for positioning and guiding each are provided, and a ram cylinder having a ram that is moved and positioned in the left-right direction on the guide for the punch is provided, A work table is provided, which is movable and positioned so as to be able to approach and separate from the portal frame in a cross direction.

[0007]

The punch press constructed as described above circulates while maintaining the correspondence between the punch holder provided with the punch provided on the upper stage and the die holder provided with the die provided on the lower stage. The guide is guided by a punch guide and a die guide at a position close to, and the transfer device is stopped and fixed at a predetermined position. At this position, a predetermined position of the work on the work table is positioned and inserted between the punch and the die, and while moving the ram cylinder having the ram on the guide provided above the punch,
By operating the ram cylinder to move the ram up and down, punching is performed in cooperation with the punch and the die. Thus, if the work table is twice as wide as the work width, any punching can be performed.

Further, the punch holder and the die holder can be easily exchanged simply by hooking them on the transfer device.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIGS.

Referring to FIGS. 1 and 2, a punch press 1 is shown.
Are two gate-shaped main frames 3 provided in parallel with each other
The main body is constituted by a frame structure including F, 3B, and an upper frame 5 and a lower frame 7 which are horizontally passed between the main frames 3F, 3B.

At the center of the upper surface of the upper frame 5, two guide rails 9, 9 are provided, and these guide rails 9, 9 are provided.
An elongated hole 11 is provided along the guide rail 9 between them. The ram cylinder 1 is mounted on the guide rails 9, 9.
3 is provided so that it can run freely. This ram cylinder 1
3 has a striker (ram) 15 protruding from the lower surface thereof, and the striker 15 penetrates the elongated hole 11 and protrudes to the lower surface side of the upper frame 5. A nut member 17 into which a ball screw 19 is inserted is fixed to the head of the ram cylinder 13, and the ram cylinder 13 is moved on the guide rail 9 via the nut member 17 as the ball screw 19 rotates. A motor 21 is provided at one end of the ball screw 19, and the motor 21 is mounted on a fixed base extending from the upper frame 5.

The above-mentioned upper frame 5 and ram cylinder 1
A transfer device 23 for punches is provided around 3. The punch transfer device 23 is composed of a shaft 25 and a chain wheel 27 protruding from the main frames 3F and 3B. There is a step in the vertical direction between the center and the axis of the main frame 3B,
In the figure, the main frame 3F side is raised. This step is determined by the height of a punch holder 29 described later. The chain 31 is provided at each of the four locations on one side of the chain, and is configured to surround the chain 31 and circulate in the same direction (for example, the direction of arrow A) by a motor (not shown).

As shown in FIG. 3, for example, the chain 31 sandwiches a roller 35 between a plurality of link plates 33 and a pin 37.
A hook 39 is provided at a predetermined interval on one outside of the link plate 33. The hook 39 is provided so as to protrude from the link plate 33 and is bent upward to form a cutout portion 41 at the center. Such a chain 31 is a main frame 3
Both the hooks 39 are installed by F and 3B so that the hooks 39 face each other inward.

On the other hand, the punch holder 29 has a cylindrical main body 4.
3, a punch P built in the main body, and a pressure receiving shaft 45 extending from the punch P and protruding above the main body 43.
And a coil spring 47 disposed around the pressure receiving shaft 45, and the punch P is always held by the bias of the coil spring 47.

On the outer periphery of the main body 43 of the punch holder 29, an upper engaging portion 49 and a lower engaging portion 51 project radially from each other. Both the upper engaging portion 49 and the lower engaging portion 51 are formed by flanged shafts, and are configured to be slidably hung in the notches 41 provided in the hooks 39 of the chain 31. ing.

The chain 31 holding the punch holder 29 is moved by the chain wheel 27 of the main frame 3 with the pressure receiving shaft 45 of the punch holder 29 always directed upward, and sent to the lower side of the upper frame 5. When it comes, it is slid into the punch guide 53 provided inside the main frames 3F and 3B. The punch guide 53 has a groove 5 on the upper part which is engaged with a part of the main body 43 of the punch holder 29.
5 and a housing groove 57 for housing the upper engaging portion 49 and the lower engaging portion 51 of the main body 43, and are provided in the longitudinal direction of the main frame 3F, like the upper frame 5. The punch guide 53 guides the punch holder 29 without swinging.

A shot pin holder 61 is slidably mounted on one side of the punch guide 53, for example, a part of the punch guide 53 on the main frame 3F via a dovetail groove 59. Is provided with a shot pin 63. The shot pins 63 are fitted into shot pin holes provided on the side surface of the punch holder 29. The shot pin holder 61 includes a ball screw 6 for punch provided along the holder 53 for punch.
5 and the ball screw 65 for punching the belt 6 so as to synchronize with the ball screw 19 of the ram cylinder 13.
7 is rotated. By the rotation of the punch ball screw 65, the punch holder 29 is positioned so as to correspond to the position of the ram cylinder 29.

The relationship between the punch holder 29 and the punch guide 53 and the punch transfer device 23 are applied to the die holder 67 provided in the lower stage in the same manner. That is, the die holder 67 has a cylindrical main body 69.
The die D can be attached to the center. An upper engaging portion 49 similar to that provided on the punch holder 29 is provided on the outer peripheral surface of the upper end portion of the main body 69, and a lower engaging portion 51 is provided below the upper engaging portion 49 in the radial direction. It is hung on the chain 31 of the die transfer device 71 via the upper engagement portion 49 and the lower engagement portion 51.
The chain 31 is mounted on a chain wheel 27 and is circulated synchronously with the punch transfer device 23. A die block support 73 for supporting a die holder 67 is provided on the lower frame 7 by the die transfer device 71, and the die holder 67 is configured to slide on the die block support 73.

On the left and right sides where the die block support 73 is provided, a die guide 7 that slides while holding the die holder 67 therebetween.
The dovetail groove 59 and the shot pin holder 61 are provided on the main frame 3F side of the die guide 75, and are engaged with the die ball screw 77. The die ball screw 77 is configured to rotate synchronously with the punch ball screw 65 via a belt 79.

A work table 81 as shown in FIG. 1 protrudes from the main frames 3F and 3B in an intersecting state. One side of the work table 81 is a table frame 83 extending from the lower frame 7.
A carriage base 85 that moves on the table frame 83 in the Y-axis direction; and a work clamp 87 provided on the carriage base 85 and moves in a direction perpendicular to the Y-axis direction (X-axis direction). The work W clamped by the work clamp 87 is positioned by the work clamp 87 in the X-axis direction, and by the carriage base 85 in the Y-axis direction. Therefore, it is sufficient for the work table 81 to be twice as large in the width direction of the work W. It is needless to say that a plurality of ball bears 89 are provided on the upper surface of the work table 81.

As described above, in the punch press 1 according to the present embodiment, the work W is placed on the work table 81, the end thereof is clamped by the work clamp 87, and the work W is moved in the Y-axis direction by the carriage base 85. Position. As a result, a predetermined portion of the work W can be
3 and the die guide 75.

Next, the predetermined punch holder 29 and the corresponding die holder 67 are guided into the punch guide 53 and the die guide 75 by the punch transfer device 23 and the die transfer device 71, respectively. The ball screw 65 and the ball screw 77 for the die are operated, and the shot pin 63 of the shot pin holder 61 provided on each of the ball screws 65 and 67 is moved to the punch holder 29 and the die holder 67.
The ram cylinder 13 is set to move to a predetermined position on the punch holder 29. In this state, a fluid is introduced into the ram cylinder 13 and the pressure receiving shaft 45 of the punch holder 29 is pressed by the striker 15, so that the punch P and the die D cooperate to perform punching. Hereinafter, punching of the work W in the X-axis direction is performed by synchronously moving the ram cylinder 13, the punch holder 29, and the die holder 67 by driving the motor 21.

Thus, for example, when the processing of the first row in the Y-axis direction is completed, the carriage base 85 is moved to set the second row, and the ram cylinder 13, the punch holder 29, and the die holder 67 are set. Are performed in synchronization with each other, and punching is performed. In addition,
It goes without saying that the punch holder 29 and the die holder 67 are in a free state after the punch transfer device 23 and the die transfer device 71 are stopped, and are driven by the movement of the shot pin holder 61.

As described above, the punch press 1 of the present embodiment
Since the work W only needs to be moved on the work table 81 in the Y-axis direction, the work W is hardly damaged, and the work table 81 has a width approximately twice as large as the width of the work W. If it can respond enough. Further, the punch holder 29 and the die holder 67 are connected to the hook 39 of the chain 31.
Can be easily exchanged.

It should be noted that the present invention is not limited to the above-described embodiment, but can be implemented in other modes by making appropriate changes.

[0026]

[Effects of the Invention] As described above, the present invention has the configuration described in the claims of the utility model registration.
The work table can be reduced in space, a large number of punches and dies can be provided, and the work table can be easily replaced.

[Brief description of the drawings]

FIG. 1 is a side view of an embodiment of a punch press according to the present invention.

FIG. 2 is a front view of FIG.

FIG. 3 is a perspective view of a main part where a punch holder is hooked on a chain.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Punch press 3 Main frame 9 Guide rail 13 Ram cylinder 23 Punch transfer device 29 Punch holder 53 Punch guide 67 Die holder 71 Die transfer device 77 Die guide 81 Work table P Punch D Die

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁶ Identification code Agency reference number FI Technical display location B30B 15/14 B30B 15/14 A

Claims (1)

(57) [Scope of request for utility model registration] 1. A punch transfer device in which a punch holder having a plurality of punches mounted thereon is arranged and circulated between two portal frames provided in parallel with each other, and the punch transfer device is provided in a lower stage. A punch for positioning and guiding each of the die transfer devices provided at the corresponding positions of the punch transfer device and the die transfer device is provided with a die holder provided with the same number of dies corresponding to the holder. A ram cylinder having a ram that is moved and positioned in the left-right direction on the punch guide is provided, and a ram cylinder is provided on the punch guide so that the ram cylinder can move close to and away from the portal frame in a cross direction. Punch press characterized by providing a work table to be performed.