JP2571481Y2 - Turret 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 turret punch press capable of performing punching and upward or downward molding.

[0002]

2. Description of the Related Art A turret punch press will be described. A table for supporting a plate material at a height of a pass line is provided on a frame, and an upper turret and a lower turret are provided behind a table. . The upper turret is provided with a plurality of upper dies for punching and a plurality of upper dies for upward molding, and the lower turret is provided with a plurality of lower dies for punching and a plurality of lower dies for upward molding. It is. Here, the lower mold for upward molding protrudes from the height position of the pass line. The lower turret also supports the plate at the height of the pass line, similarly to the table.

Further, a striker for pressing the upper die for punching or the upper die for upward molding located in the processing area is provided above and below the upper turret so as to be movable up and down.
Here, the processing region refers to a region located vertically below the striker.

Accordingly, the plate material is positioned at a predetermined position between the upper turret and the lower turret, and the upper turret and the lower turret are rotated by a predetermined angle in the same direction in synchronization with each other so that a predetermined punching upper die and lower die are formed. The mold (or upper mold and lower mold for upward molding) is positioned in the processing area. Then, by lowering the striker and pressing a predetermined upper die for punching (or an upper die for upward forming), desired punching (or upward forming) is performed on the plate material.

[0005]

However, in the conventional turret punch press as described above, the table and the lower turret are located at the height of the pass line, and it is necessary to support the plate material formed downward. Can not. Therefore, in the conventional turret punch press, the downward forming process cannot be performed.

In addition, since the upward molding die mounted on the lower turret protrudes from the height of the pass line, the plate cannot be kept horizontal, and the plate is moved and positioned. At times, there has been a problem that the plate material is damaged or the plate material has irregularities.

[0007]

SUMMARY OF THE INVENTION In order to solve the conventional problems as described above, in the present invention, an upper turret having a large number of upper molds which are detachable and movable up and down is provided.
A lower turret having a large number of lower molds that are detachable and movable up and down is provided on a frame so as to face up and down, and the upper turret and the lower turret are provided so that any upper mold and lower mold can be indexed into a processing area. Is provided so as to be capable of rotational positioning, and a striker for pressing the upper mold indexed to the processing area by providing a die lifting device for pushing up the lower die indexed to the processing area to a predetermined height position. Provided,
Providing an elevating table that supports a plate material between the upper turret and the lower turret, the elevating table between a height position of the pass line and a predetermined height position lower than the height position of the pass line. It is provided so as to be able to move up and down freely, and an intruding portion through which the striker can enter is provided at a portion of the elevating table located in a processing area.

[0008]

In the above arrangement, a number of upper dies are mounted on the upper turret, and a number of lower dies are mounted on the lower turret.

When performing punching or upward molding, the lifting table is raised to the height of the pass line.
Then, the upper turret and the lower turret are rotated to divide a predetermined upper die and a lower die into a processing region, and position the plate material in the processing region. Furthermore, a predetermined upper mold,
After indexing the lower mold to the processing area, by appropriately operating the mold lifting device to push up the predetermined lower mold,
The predetermined lower mold penetrates the invading portion and rises to a predetermined height position. Here, the predetermined height position means the height position of the pass line for the lower die for punching, and the predetermined height position higher than the height position of the pass line for the upper die for upward molding. Say.

After a predetermined lower mold is pushed up to a predetermined height position, a predetermined upper mold is pressed by a striker, so that a predetermined upper mold and a lower mold cooperate with each other on a sheet material. Desired stamping or upward forming can be performed.

Next, a case where a downward forming process is performed on a plate material will be described.

The upper turret and the lower turret are rotated to index the predetermined upper mold and lower mold for downward molding into the processing area, and to position the plate material in the processing area. After indexing the predetermined upper mold and lower mold for downward molding into the processing area, the mold lowering device is appropriately operated to push up the lower mold for predetermined downward molding to a predetermined height position. Position. Here, the predetermined height position is a height position substantially equal to the height position of the pass line or a predetermined height position lower than the height position of the pass line.

Then, a desired downward molding process can be performed on the plate material by pressing a predetermined downward molding lower die with a striker.

After performing downward forming on the plate material, the lifting table is lowered corresponding to the downward forming amount. Furthermore, when performing a downward forming process on the plate material, the forming portion is supported by a lifting table.

[0015]

Embodiments of the present invention will be described below with reference to the drawings.

Referring to FIGS. 6 and 5, the turret punch press 1 is based on a bridge-type frame having an upper frame 3 and a lower frame 5 opposed to each other. A fixed table 7 for supporting the plate material W is provided on the upper surface of the lower frame 5, and movable tables 9 are provided on both left and right sides (up and down in FIG. 5) of the fixed table 7. The fixed table 7 and the movable table 9
Are provided with a number of free bearings for supporting the plate material W at the height of the pass line. The movable table 9 is movable in the front-rear direction (left and right in FIG. 5) via a rail 11 provided on the lower frame 5.

A movement positioning device 13 is provided for performing movement positioning of the plate material W for performing punching. More specifically, a carriage base 15 constituting a part of the movement positioning device 13 is integrally provided on the front side of the movable table 9, and the carriage base 15 has a carriage provided with a clamp device 17 for gripping the plate material W. 19 is provided to be movable in the left-right direction.

Behind the fixed table 7, a turret device 25 having an upper turret 21 and a lower turret 23 is provided.
Is provided. For details of the turret device 25, referring to FIG. 1, the upper frame 3 is provided with a rotation shaft 27 integrally provided on the upper turret 21 via a chain 29 so as to be rotatable. The rotary shaft 31 provided integrally with the lower turret 23 is rotatably provided via a chain 33. And the chain 29,
Reference numeral 33 denotes an upper turret 2 which is linked to a turret servomotor (not shown) via appropriate means.
1. The lower turret 23 can be synchronously rotated by a predetermined angle in the same direction.

Referring again to FIGS. 5 and 6, the upper part,
The plurality of lower turrets 21 and 23 (3 in this embodiment)
And a plurality of pairs of upper and lower molds 37 and 39, each of which includes a plurality of pairs of movable mold holders 4 and a plurality of vertically movable molds.
It is provided so as to be detachable and exchangeable via the first and the third 43. In addition, an upper mold 39 and a lower mold 41 are provided in a plurality of mold stations other than the mold changing station 35 in the upper turret 21 and the lower turret 23, respectively, so as to be detachable and vertically movable.

As shown in FIG. 6, a plurality of pairs of mold holders 41 and 43 having molds 37 and 39 are mounted on the lower frame 5.
Many are stored in the mold storage device 44 provided in the rear part. The lower frame 5 is provided with a mold exchanging device 45 that is movable in the front-rear direction, and the molds 37 and 39 of the mold exchanging station 35 indexed to the mold exchanging position.
And predetermined molds 37, 3 stored in the mold storage device 43.
9 has the effect of exchanging.

A hydraulic cylinder 47 is provided above the upper turret 21 in the upper frame 3 as shown in FIG. Is provided with a striker 51 for pressing the upper mold 37 located at the position shown in FIG. Here, the processing area refers to an area located vertically below the striker 51.

Further, at a position below the lower turret 23 in the lower frame 5, a die lifting device 53 for raising the lower die 39 provided on the lower turret 23 to a predetermined height position is provided. (See FIG. 1, details will be described later).

According to the above configuration, first, the plate material W is supported on the movable table 9 and the fixed table 7, and the plate material W is gripped by the clamp device 17.
Is moved in the left-right direction on the carriage base 15 and the carriage base 15 is moved in the front-rear direction integrally with the movable table 9. Thereby, the plate material W can be positioned in the processing area. Also, upper turret 2
1. The desired upper die 37 and lower die 39 are indexed to the processing area by rotating the lower turret 23 appropriately. After indexing the predetermined upper mold 37 and lower mold 39 into the processing area,
The mold lifting device operates to push up a predetermined lower mold 39 to a predetermined height position. And the hydraulic cylinder 47
When the striker 51 is lowered by extending the piston rod 49, a predetermined upper die 37 is pressed, and the plate material W is punched by the cooperation of the lower die 39 of the predetermined upper die 37. You.

The lower turret 23 is located at a height lower than the pass line P. More specifically, a fixed rod 55 is fixed to the lower frame 5 at a position vertically below the lower turret 23, and the rotating shaft 31 is rotatably supported on the fixed rod 55 via a bearing 56. A sprocket 57 for winding the chain 33 is keyed to the rotating shaft 31.

On the other hand, the fixed rod 59 is mounted on the upper frame 3.
, And the rotating shaft 27 is rotatably supported on the fixed rod 59 via a bearing 60.

An elevating table 61 for supporting the plate material W is provided between the upper turret 21 and the lower turret 23.
The elevating table 61 is provided to be able to elevate between the height position of the pass line P and a predetermined height position lower than the height position of the pass line P by the elevating cylinder 63. An intruding portion 61a is provided in the processing area of the elevating table 61 so that the lower mold 39 can enter.

The details of the die lifting device 53 for lifting a predetermined lower die 39 located in the processing area to a predetermined height position will be described.
Is constituted by a hydraulic cylinder device provided below the lower turret 23 in the lower frame 5, and a piston rod 65 in the hydraulic cylinder device 53 pushes up a predetermined lower mold 39 from below. Further, the piston rod 65 is provided with a hollow hole 65h.

Referring to FIGS. 2 and 3, an appropriate number of types (three types in this embodiment) are used as the upper mold 37. That is, there are an upper mold 67 for downward molding for performing downward molding, an upper mold 69 for upward molding for performing upward molding, and an upper mold 71 for punching performing punching. Similarly, as the lower mold 39, an appropriate number of types (three types in this embodiment) are used. That is, there are a lower mold 73 for downward molding, a lower mold 75 for upward molding, and a lower mold 77 for punching.

An example of the upper mold 83 for downward molding will be described with reference to FIG. 2. The upper mold mounting hole provided in the mold holder 41 (or the upper turret 21) has a sleeve 7.
9 is provided so as to be slidable up and down, and this sleeve 79 can be urged upward by a spring 81. A punch body 83 is provided in the inner hole of the sleeve 79 so as to be slidable up and down. The punch body 83 can be urged upward by a spring 85. At the lower end of the punch body 83, a punch chip 87 for performing a downward forming process is provided.

The lower mold 73 for downward molding will be described. A lower mold mounting hole provided in the mold holder 43 (or the lower turret 23) is provided with a die holder 89 which is slidable up and down. 89 is spring 9
1 allows downward biasing. At the upper end of the die holder 89, a die chip 93 for performing downward molding from below is provided. FIG. 2 shows a state of the upper mold 67 for downward molding and the lower mold 73 for downward molding immediately after the downward molding.

Next, the upper mold 69 for upward molding and the lower mold 75 for upward molding will be described with reference to FIGS. The upper mold 69 for upward molding will be described. An upper mold mounting hole provided in the mold holder 41 (or the upper turret 21) is provided with a vertically slidable sleeve 95. Can be biased upward. A punch body 99 is provided in the inner hole of the sleeve 95 so as to be slidable up and down. The punch body 99 can be urged upward by a spring 101. At the lower end of the punch body 99, a punch chip 103 for performing upward forming is provided.

The lower mold 75 for upward molding will be described. A lower mold mounting hole provided in the mold holder 43 (or the lower turret 23) is provided with a die holder 105 which is slidable up and down. 105 can be urged downward by a spring 107. At the upper end of the die holder 105, a die chip 109 for performing upward molding is provided. FIG. 4 shows a state of the upward molding die 69 and the upward molding die 75 immediately after the upward molding process.

Next, the punching upper die 71 and the punching lower die 77 will be described with reference to FIGS. The upper die 71 for punching will be described.
A sleeve 111 is slidable up and down in an upper mold mounting hole provided in the upper turret 21 (or the upper turret 21), and the sleeve 111 can be urged upward by a spring 113. A punch body 115 is provided in the inner hole of the sleeve 111 so as to be slidable up and down. The punch body 115 can be urged upward by a spring 117. A punch tip 119 for punching is provided at a lower end of the punch body 115.

The lower die 77 for punching will be described. The lower die mounting hole provided in the die holder 43 (or the lower turret 23) has a die holder 1 slidable up and down.
The die holder 121 can be urged downward by a spring 123. A die 1 for punching is provided on the upper end of the die holder 121.
25 are provided.

The operation of the present embodiment will be described in detail based on the configuration as described above. As for the processing order, after performing the punching process and the upward forming process on the plate material W, the downward forming process is performed, and the downward forming process is performed in order from the rear side to the front side of the plate material W.

First, the punching process will be described with reference to FIGS. As preparation before machining, the lifting cylinder 63 is operated to raise the lifting table 61 to the height position of the pass line P.

After raising the lower turret 23 to the predetermined upper limit height position, the upper turret 21 and the lower turret 2
3 is synchronously rotated in the same direction by a predetermined angle, and a predetermined upper die for punching 71 and a lower die for punching 77 are indexed into a processing area. Further, the plate material W is positioned at a predetermined position between the upper turret 21 and the lower turret 23 by appropriately operating the movement positioning device 13.

Predetermined upper die 71 and lower die 7
After indexing 7 into the machining area, the hydraulic cylinder 53 is operated to raise the piston rod 65, so that the die holder 121 and the die tip 125 are higher than the pass line height position against the urging force of the spring 123. Raise to a predetermined height position. And the hydraulic cylinder 47
Is operated to lower the striker 51 and press the punch body 115 to perform a predetermined punching process on the plate material W.

The chips generated by the punching process are:
Hollow holes and piston rods 65 provided in the die holder 121
And falls through the hollow hole 65h provided in the.

Next, in the case of performing the upward molding, the height positions of the lifting table 61 and the lower turret 23 are almost the same as those in the punching, and the upper mold 69 for upward molding and the lower mold for upward molding are used. The operation of the mold 75 is almost the same. That is, the upper mold 6 for predetermined upward molding
9. The lower mold 75 is indexed to the machining area and the hydraulic cylinder 5
After the predetermined lower mold 75 for upward molding is pushed up to the predetermined height position higher than the height position of the pass line (the height position corresponding to the upward molding amount) by the operation of 3, the predetermined mold is pressed by the striker 51. (See FIG. 3).

Next, referring to FIG. 1 and FIG. 2, when downward forming is performed on the plate material W, the upper turret 21 and the lower turret 23 are appropriately rotated and a predetermined lower forming upper die 67 is formed. Then, the lower mold 73 for the downward molding die is indexed into the processing area, and the plate material W is positioned at a predetermined position between the upper turret 21 and the lower turret 23 by operating the movement positioning device 13. After the predetermined upper mold 67 and lower mold 73 are indexed, the hydraulic cylinder 53 is operated to move the lower mold 73 for downward molding into the pass line P.
(Or a predetermined height position lower than the height position of the pass line P). Then, the hydraulic cylinder 47 is operated to lower the striker 51 to apply a pressure to the upper end of the punch body 83, whereby the punch tip 87 and the sleeve 79 are lowered. Thereby, as shown in FIG. 2, the downward forming process is performed on the plate material W by the cooperation of the punch chip 87 and the die chip 93.

When the downward molding is completed, the hydraulic cylinder 4
7, the striker 51 is raised, and FIG.
Return to the state. Further, the elevating table 61 is lowered by the operation of the elevating cylinder 63 to be positioned at a predetermined height position lower than the height position of the pass line (a height position corresponding to the downward molding amount). The lifting table 61
May be positioned at a predetermined height position corresponding to the downward molding amount.

Then, the plate material W is moved backward by appropriately operating the movement positioning device 13, and the plate material W is carried out from the lifting table 61 side. At this time, the lifting table 61
Is located at a predetermined height position corresponding to the downward molding amount, and since the downward molding portion is supported, the downward molding portion is not deformed.

When a plurality of downward forming processes are performed on one plate W, the downward forming is performed in order from the rear side to the front side of the plate W.

Note that the present invention is not limited to the description of the embodiment as described above, but can be implemented in various other modes.

[0046]

As will be understood from the above description of the embodiment, according to the present invention, when performing the downward forming process, the lifting table provided between the upper turret and the lower turret can be raised and lowered. The downward molding portion can be supported by the elevating table, and appropriate downward molding can be performed without deforming the molding portion.

Further, the lower turret is provided below the height position of the pass line, and the lower die is provided so as to be able to move up and down. Interference, scratches on the board,
Irregularities can be minimized.

[Brief description of the drawings]

FIG. 1 is an explanatory side sectional view showing a main part of this embodiment before a downward molding process.

FIG. 2 is an explanatory cross-sectional view showing a state of a main part immediately after downward molding.

FIG. 3 is an explanatory sectional view of a main part showing a state before a punching process and an upward forming process.

FIG. 4 is an explanatory cross-sectional view of a main part showing a state immediately after upward molding.

FIG. 5 is a schematic plan view of a turret punch press.

FIG. 6 is a perspective view showing an outline of a turret punch press.

[Explanation of symbols]

 Reference Signs List 1 turret punch press 3 upper frame 5 lower frame 21 upper turret 23 lower turret 67, 69, 71 upper die 53 die lifting device 73, 75, 77 lower die 51 striker 61 elevating table 61a entry part

Claims (1)

(57) [Scope of request for utility model registration] 1. An upper turret having a plurality of detachable and vertically movable upper dies, and a lower turret including a plurality of detachable and vertically movable lower dies are provided on a frame so as to be vertically opposed to each other. The upper turret and the lower turret are provided so as to be rotatable so as to index the upper mold and the lower mold into a processing region, and the lower die divided into the processing region is pushed up to a predetermined height position. Providing a mold lifting device for, providing a striker for pressing the upper mold indexed to the processing area, providing a lifting table that supports a plate material between the upper turret and the lower turret,
The elevating table is provided so as to be able to move up and down between the height position of the pass line and a predetermined height position lower than the height position of the pass line. A turret punch press characterized by having a possible intrusion.