JP2580440B2 - Multiple dies for 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 multiple press die mounted on a punch press and holding a large number of dies in a radial direction. Concerning the continuous mold.

[0002]

2. Description of the Related Art Conventionally, for example, a multiple die mounted on a turret punch press is disclosed in, for example,
As shown in the publication, the stripper guide is linked to the index device and follows the rotation, and the punch carrier follows the vertical movement.

In addition, among the many dies provided in the above-mentioned multiple dies, the dies which do not perform the punching process also perform the vertical movement.

[0004]

However, since the multiple metal mold known in the prior art has a double structure of a stripper guide and a punch carrier, the structure is complicated, it is difficult to maintain accuracy, and the cost is high. There was a problem of becoming.

[0005] In addition, since a mold that does not perform punching also moves up and down, there has been a problem that the positioning of the mold and the like become complicated in terms of mechanism.

An object of the present invention is to solve the above problems,
An object of the present invention is to provide a multiple die for a punch press which has a simple structure, can easily maintain accuracy, and can easily position a die.

[0007]

In order to achieve the above object, the present invention provides a stripper guide provided on an upper mold holding member of a punch press so as to be vertically movable, and a plurality of vertically movable punches provided radially. A punch driver that is vertically movable and rotatable in the stripper guide, and a groove for engaging the head of the punch is provided on the circumference of the lower surface of the punch driver, and any one of the plurality of punches is provided. It is characterized in that only one hitting portion is provided with a hitting portion, and a punch-through hole is radially provided in an upper portion of the groove other than the hitting portion.

[0008]

In the above construction, the work is positioned on the die located below the desired punch in the upper multiple mold, and the punch driver is rotated so that the hitting portion comes above the desired punch. Indexing and positioning. Thus, when the punch driver is hit downward with a known striker, for example, the stripper guide first moves down to hold the work together with the die. Since the punch is hit, the lower end of the punch projects into the die, and punching is performed. However, the other punches in the upper multiple mold are in the stripper guide and the lower end does not protrude in the direction of the work and the die.

Next, when the striker is raised, the punch driver is raised by, for example, the restoring force of a known stripping spring, but the groove is also raised at the same time. To reliably pull out the lower end of the punch from the die and the work. When the striker further rises, the stripper guide also rises by, for example, a known return spring and separates from the work and the die, so that the work can be taken out or moved and positioned for the next processing.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment of the present invention will be described below with reference to the drawings.

FIG. 5 shows a turret punch press (punch press) 1 as a punch press. In the turret punch press 1, column frames 5, 7 are erected on both sides of a base 3, and these column frames 5, 5 are further provided.
The upper frame 9 is provided above the upper frame 7.

On the lower surface of the upper frame 9, a single punch 11 as a plurality of upper dies and a punch package (upper multiple die) 13 in which a plurality of punches of this embodiment are radially accommodated are detachably mounted. A disk-shaped upper turret (upper mold holding member) 15 is rotatably supported by an upper rotating shaft 17.

The base 3 is opposed to the upper turret 15.
On the upper surface of the lower turret (lower die), a single die 19 and a die package (lower multiple die) 21 as a lower die forming a pair with the single punch 11 and the punch package 13 are detachably mounted. A holding member 23 is rotatably supported by a lower rotation shaft 25. A ram 29 on which a striker 27 for hitting the single punch 11 and the punch package 13 as an upper mold is provided below the upper frame 9.

Accordingly, the rotation of the upper turret 15 and the lower turret 23 is synchronously controlled by a turret servomotor (not shown) provided in the frame, so that a desired single punch 11 and a single die 19 or a punch package 13 are provided.
The position of the pair of the die package 21 and the die package 21 is selectively controlled at a processing position directly below the striker 27.

Further, a fixed table (not shown) is provided at the center of the upper surface of the base 3, and a pair of movable tables whose positioning is controlled along the Y-axis direction (left-right direction in FIG. 5) on both front and rear sides of the fixed table. A table 31 is movably supported. The movable table 31 is integrally provided with a carriage base 33 which is movable in the Y-axis direction which is the front-rear direction while straddling the fixed table. The carriage base 33 is equipped with a carriage 35 that is movable in the X-axis direction (a direction perpendicular to the plane of FIG. 5). The carriage 35 is provided with a work clamp 37 for gripping one end of a plate-shaped work W so as to be movable in the X-axis direction.

Accordingly, the positioning of the work W between the upper turret 15 and the lower turret 23 is controlled by moving the carriage 35 provided with the work clamp 37 for gripping the work W on the carriage base 33 in the X-axis direction. The operation is performed by controlling the movement of the carriage base 33 in the Y-axis direction.

The work W positioned as described above
The punching is performed by a predetermined single punch 11 and a single die 19 or a predetermined punch package 13 and a die package 21 selected by rotating and positioning the upper turret 15 and the lower turret 23.

Next, referring to FIG. 1, a description will be given of a multiple metal mold 39 for a punch press according to this embodiment. The punch press multiple die 39 includes the punch package 13 and the die package 21. The punch package 13 is provided with a stripper guide 41 supported on the upper turret 15 so as to be vertically movable. A flange portion 47 at the lower end of the rotary tube 45 is engaged with the upper flange portion 43 of the stripper guide 41, and between the flange portion 47 and the bottom surface 49 of the stepped hole provided in the upper turret 15. A guide spring 51 is provided via a thrust bearing, and constantly urges the stripper guide 41 upward.

Further, an upper portion of the stripper guide 41 is provided with an inner hole portion 53 so as to have a cup shape. A plurality of punches 57 extend downward from the bottom surface 55 of the inner hole 53.
However, it is provided so as to be movable up and down in a radial arrangement. These punches 57 are referred to as punches 57A, 57B,. The punches 57A, 57B,..., 57J have a head portion 59, a large-diameter portion 61 serving as a guide, a medium-diameter portion 63, and a punch portion 65.
A, 65B,..., 65J are provided.

The punch portions 65A, 65B,.
The cross-sectional shapes of J are not necessarily the same, and may have different diameters, for example, as shown in FIG. 3, or may have different cross-sectional shapes, such as a square or a hexagon. In short, by appropriately selecting the punches 57A, 57B,..., 57J, punching of different sizes and shapes can be performed.

A hold spring is also provided between the bottom surface 69 of the stepped hole radially provided on the upper surface of the guide plate 67 provided at the lower end of the stripper guide 41 and the lower end of the large diameter portion 61 via a washer. 71 is provided,
The punches 57A, 57B,..., 57J are constantly urged upward. At the lower end of the guide plate 67, a stripper plate 73 is provided radially to guide the punch portions 65A, 65B,..., 65J. Note that the stripper plate 73 is
And a lock pin 77 for positioning and fixing to the guide plate 67.

On the upper part of the stripper guide 41,
A rotary plate 79 is provided rotatably and vertically immovable via a seal 81. The rotary plate 79 has a center hole 83 for guiding the first punch driver 85 so as to be vertically movable. At the lower end of the first punch driver 85, a flange-shaped second punch driver (punch driver) 87 is provided fixed by bolts 89. On the lower surface of the second punch driver 87, a T-shaped groove 91 is provided in a circumferential shape so as to hook the head 59 of the punch 57. This T-shaped groove 91
A punch through hole 93 is provided radially above the hole at a position facing the punch 57. However, in only one place, there is a place where the punch-through hole 93 is not provided as the hitting portion 95.

The second punch driver 87 has backup pins 97 radially at the same pitch as the punch 57.
Is provided in the punch through hole 93 via a washer so as to be vertically movable. However, in only one place, the punch-through hole 93 and the backup pin 97 are missing, and the hitting part 95 is used instead.
It is provided so that it can perform the function as. The hitting portion 95 is rotatably indexed on a desired one of the punches 57, for example, on a punch 57A, and hits only the punch 57A downward.

Further, the rotary plate 79 is provided non-rotatably with respect to the first punch driver 85 by the pins 99. An inner hole 101 is provided downward at a position facing the back pin 97.
The backup pin 97 is always urged downward by the backup spring 103 provided in the inside. The backup spring 103 and the backup pin 97
Functions to fix the unused punch 57.

At the upper end of the first punch driver 85, a head plate 105 is provided fixed to bolts 107. A stripping spring 109 made of, for example, urethane rubber is provided between the lower surface of the head plate 105 and the upper surface of the rotary plate 79.

On the outer periphery of the rotary plate 79,
Pins 111 provided on the rotary tube 45 are engaged with each other so that they cannot rotate with each other and cannot move up and down.
Further, a gear tube 115 rotatably supported via a bearing 113 on the upper turret 15 surrounding the outer periphery of the rotary tube 45 is provided. A gear 117 is provided on an outer periphery of the gear tube 115 and a vertical groove 119 is provided on an inner periphery thereof, and a head of a pin 111 provided on the rotary tube 45 is engaged. The gear 117 is designed to mesh with a final gear 123 of an index device 121 as already known, for example, as disclosed in Japanese Patent Application Laid-Open No. 1-52096.

On the lower turret 23, a die package 21 facing the punch package 13 is provided. The die package 21 includes a plurality of dies 1.
25 are provided. More specifically, since these dies 125 are opposed to the punches 57A, 57B,..., 57J, they can be distinguished into dies 125A, 125B,. That is, the dies 125A, 125B,..., 125J are provided with die holes 127A, 127B,. However, the plurality of dies 125 have a simple configuration as shown in FIG. 1 which does not rotate and does not move up and down.

The operation of the multiple die 39 for punch press will now be described with reference to FIG. First, on,
After rotating the lower turrets 15 and 23 to index the desired punch package 13 and die package 21 directly below the striker 27, the work W is placed on the die package 21.
The work W is positioned on a desired die, for example, a die 125A by appropriately operating the carriage base 33 and the carriage 35. When the gear tube 115 is rotated by appropriately operating the known index device 121, the rotation is transmitted from the rotary tube 45 to the rotary plate 79, and further transmitted to the first punch driver 85. Thus, the hitting portion 95 provided in the second punch driver 87 can be indexed on a desired punch, for example, the punch 57A.

After the indexing of the hitting portion 95 is completed, the striker 27 is lowered by operating the ram 29 and the head plate 109 is hit.
The rotary plate 79, the stripper guide 41, the rotary tube 45, and the first and second punch drivers 85 and 87 are lowered together against the urging force of the guide spring 51 without being compressed. Thus, when the stripper plate 73 contacts the work W, the work W is sandwiched between the die 125 and the stripper guide 41. After that, the first and second punch drivers 85,
Only 87 is lowered while compressing stripping spring 109.

Then, the hitting portion 95 hits the head 59 of the punch 57A.
1 can be lowered while compressing the
A protrudes from the lower surface of the stripper plate 73, breaks through the work W, and further has a die hole 127A of the die 125A.
Punching is completed by projecting inward.

Further, the other punches 57B,..., 57J jump up due to the impact of punching because the backup pin 97 urged downward by the backup spring 103 comes into contact with the head 59 when the second punch driver 87 is lowered. Never. Since the hold spring 71 is stronger than the backup spring 103, the punch 57
B,..., 57J do not jump out of the stripper plate 99.

Next, when the ram 29 is appropriately operated to raise the striker 27, the stripping spring 10
With the restoring force of 9, the first and second punch drivers 85 and 87 first rise. Then, the punch 57A in which the punch portion 65A has protruded into the die hole 127A is forcibly moved to the other punches 57B,.
Raised to J level.

Further, the striker 27 and the first and second
When the punch drivers 85 and 87 are raised, the stripper guide 4 is restored by the restoring force of the guide spring 51.
1. Rotary tube 45, rotary plate 79
Begin to rise together, so stripper plate 73
Is also separated from the work W.

When the striker 27 further rises and reaches the top dead center, the striker 27
Leave 05. Then, stripping spring 1
With the restoring force of 09, the upper surface of the second punch driver 87 comes into contact with the lower surface of the rotary plate 79, so that the elevation of the first punch driver 85 stops. At this time, since the backup pin 97 contacts the washer on the upper surface of the second punch driver 87, the lower end is separated from the head 59 of the punch 57. Therefore, there is no trouble in rotating the second punch driver 87 to index the hitting portion 95 to any one of the desired punches 57A, 57B,..., 57J. Of course, since the T-shaped groove 91 engaged with the head 59 of the punch 57 is also provided in a circumferential shape, there is no problem even if the second punch driver 87 rotates on the fixed punch 57.

Next, if the final gear 123 of the indexing device 121 is engaged with the gear 117 of the gear tube 115, the second punch driver 87 is rotated so that the hitting portion 95 is moved to a desired punch, for example, a punch 57A.
Can be indexed.

As described above, according to this embodiment, the large number of punches 57 stored in the punch package 13
Are radially provided on the stripper guide 41 provided on the upper turret 15 so as to be movable up and down, so that the structure is simple and the precision can be easily maintained, which is effective in improving the quality. In addition, if the structure is simple, it will lead to cost reduction, which will bring about an economic effect.

Further, by the index device 121,
The striker 95 provided in the second punch driver 87 may be rotated and indexed to a desired punch, for example, the punch 57A, so that it is not necessary to move the striker, and the turret package 21 may be fixed. Since the structure is simplified, it has an economic effect.

The present invention is not limited to the above-described embodiment, but can be embodied in other modes by making appropriate changes.

[0039]

As will be understood from the above description of the embodiment, according to the present invention, a number of punches housed in the upper multiple mold are provided on the upper mold holding member so as to be vertically movable. Since the stripper guides are provided radially, the structure is simplified and the precision is easily maintained, which is effective in improving the quality. Further, if the structure is simplified, the cost can be reduced.

Furthermore, the indexing device is used to perform punching by hitting only a desired punch by merely indexing a hitting portion provided on the punch driver on the desired punch, and to remove many other punches in the stripper guide. Since it does not operate, the work positioning can be performed by considering only the desired punch, so that the working efficiency is improved.

Further, in order to operate only a desired punch, the punch driver need only be rotated and indexed by the index device, so that it is not necessary to move the striker.
The structure of the punch press as a whole is simplified, and an economic effect is achieved.

[Brief description of the drawings]

FIG. 1 is an axial cross-sectional view of a multiple mold for a punch press in an unloaded state according to the present invention.

FIG. 2 is an axial sectional view of the multiple mold shown in FIG. 1 in a loaded state.

FIG. 3 is a view taken in the direction of arrows III-III in FIG.

FIG. 4 is a view taken in the direction of arrows IV-IV in FIG. 1;

FIG. 5 is an explanatory front view showing the entire turret punch press as a punch press.

[Explanation of symbols]

 Reference Signs List 1 turret punch press (punch press) 13 punch package (upper multiple die) 15 upper turret (upper die holding member) 39 multiple die for punch press 41 stripper guide 53 inner hole 57 punch 59 head 87th 2 Punch driver (punch driver) 91 T-shaped groove 93 Punch through hole 95 Hitting part 121 Indexing device

Claims (1)

(57) [Claims] 1. A plurality of vertically movable punches are radially provided on a stripper guide provided on an upper mold holding member of a punch press so as to be vertically movable, and a vertically movable and rotatable punch driver is provided in the stripper guide. And a groove for engaging the head of the punch is provided on the circumference of the lower surface of the punch driver, and a hitting portion that can hit only one of the plurality of punches is provided. A multiple punch die for punch press, characterized in that punch-through holes are provided radially above the groove at locations other than the part.