JP2872370B2 - Turret punch press - Google Patents

Description

Description of the Invention (Object of the Invention) (Field of Industrial Application) The present invention relates to a turret punch press, and more specifically, to remove a mold set mounted on a turret and to use a mold to be subsequently used. The present invention relates to a turret punch press provided with an automatic die changing device for mounting a die set on a turret.

(Prior Art) Conventionally, in order to remove a mold attached to a turret in a turret punch press, and to attach a mold to be used next to the turret, an automatic mold exchanging device is used.

As shown in FIG. 11, for example, this automatic die changing apparatus is rotatably mounted on a frame 201 of a turret punch press and has a tool stock yard 207 adjacent to lower turrets 203 and 205. A tool moving exchange device 209 that moves between the tool stock yard 207 and the upper and lower turrets 203 and 205 is provided. Note that this conventional example is an example in which three molds in the turrets 203 and 205 are replaced.

(Problems to be Solved by the Invention) By the way, the above-described conventional die changing apparatus is intended to increase the number of dies held in the tool stock yard 207.
The L dimension shown in the drawing of FIG. 11 increases, and accordingly, the movement stroke S of the automatic die changing device 209 also increases. Therefore, there is a problem that the time required for automatic mold replacement becomes longer, and the dimension of the stroke S becomes longer, leading to an increase in space and cost. Further, during punching of the workpiece, the automatic die changing device 209 is located in front of the tool stock yard 207, so that there is a problem that the die cannot be set.

SUMMARY OF THE INVENTION An object of the present invention is to provide a turret punch press in which the exclusive space of a mold holding region is reduced, more molds are held, and productivity is improved in order to improve the above-mentioned problems. .

[Constitution of the Invention] (Means for Solving the Problems) In order to achieve the above object, the present invention provides a turret punch press in which a turret supporting a large number of dies is rotatably provided, and is provided adjacent to the turret. A mold holding area for holding a plurality of molds is provided, and a mold automatic exchanging device for taking out the mold of the mold holding area and mounting the mold on the turret is provided at a position corresponding to the mold holding area. A mold set storage section is provided so as to be reciprocally movable between a position corresponding to the turret, a plurality of rows of mold sets in the mold holding area in the left and right direction, and a plurality of stages in the up and down direction. A turret punch press was provided with fixing means for vertically moving and positioning the die set stored in the die set storage part in the die set storage part.

(Operation) By employing the turret punch press of the present invention, a mold holding area for holding a plurality of dies is provided adjacent to the turret of the turret punch press. The automatic mold changing device for taking out the mold in the mold holding area and mounting it on the turret is provided so as to be reciprocally movable between a position corresponding to the mold holding area and a position corresponding to the turret. .

The mold holding area is provided with a mold set storage section, and the mold set storage section has a plurality of rows in the left-right direction.
A plurality of mold sets are stored vertically. Then, the mold set is movable in the vertical direction, and is positioned by the fixing means so as not to be displaced when the desired mold set is taken out by the automatic mold changing apparatus.

Thus, a large number of molds are held in the mold set storage section.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

Since the structure of the turret punch press is already known, it will be schematically described. Referring to FIGS. 1 and 2, the turret punch press 1 has a portal frame 3, and a turret composed of a rotatable upper turret 5 and a lower turret 7 in the center of the portal frame 3. 9 is supported on the portal frame 3. On this turret 5,
On the circumference of the lower turret 7, dies comprising a plurality of punches and dies are mounted facing each other.

A processing position 11 is provided on the left side of the turret 9. A die selected from the dies is indexed at the processing position 11, and a driving device provided on the upper frame of the portal frame 3. As a result, the punch and the die cooperate with each other to perform punching at a desired position of the work W positioned at the processing position due to the vertical movement of the striker provided above the processing position.

A fixed center table 13 is provided below the portal frame 3.
A movable table 15 is provided on both sides of the movable table 15 so as to be movable in the Y-axis direction (the horizontal direction in FIG. 1). When the movable table 15 is moved in the Y-axis direction, the movable table 15 is guided by a plurality of guides 17 extending in the Y-axis direction and is smoothly moved.

A carriage base 19 is provided on the left end of the movable table 15.
The carriage base 19 is provided with a workpiece movement positioning device 21. The carriage base 19 extends in the X-axis direction (the vertical direction in FIG. 1). That is, the carriage base 19 is provided with a carriage 23 movable in the X-axis direction, and a plurality of work clamps 25 for gripping the work W are attached to the carriage 23.

With the above configuration, the movable table 15 is moved in the Y-axis direction, and the carriage 23 is moved in the X-axis direction.
A desired position to be processed by being moved in the directions of the axis and the Y-axis is positioned at the processing position and punching is performed.

A work movement positioning device 21 is provided on the left side with the turret 9 at the center.
A mold holding area 27 is provided in the gate-shaped frame 3 on the right side, which is the opposite side of the mold.

In the mold holding area 27, a plurality of mold sets 29 each including an appropriate number of punches and dies are arranged at appropriate intervals in the Y-axis direction.
And the mold set storage section 31 which is arranged facing up and down
Is provided. Moreover, the mold set 29 disposed in the mold set storage section 31 is configured to be movable in the Z-axis direction (the vertical direction in FIG. 2).

More specifically, referring also to FIGS. 3 to 6, the gantry 33 of the mold holding area 27 is a turret punch press 1
Is fixed to the portal frame 3 by bolts or the like. A mold set storage section 31 in which the mold sets 29 are stored in a plurality of rows (three rows in the present embodiment) in a plurality of rows (six rows in the present embodiment).
Is composed of a base portion 35 and a mold set storage portion main body 37 (see FIG. 4). The base portion 35 has a plurality of (two in this embodiment) rails extending vertically to the gantry 33. A plurality of, for example, LM guides 41 provided on the back surface of the base portion 35 are engaged with the rails 39. A rotation transmission device 45 such as a timing belt is provided by a motor 43 provided on the upper side surface of the gantry 33.
, A screw rod 47 is vertically provided, and a nut 49 screwed to the screw rod 47 is fixed to the base portion 35. This base
As for the positioning at the time of vertical movement, the dog 51 which is a fixing means provided on the base portion 35 pops out by the operation of the pneumatic piston device 53, and the base portion 35 is positioned.

With the above configuration, the rotation is transmitted to the screw rod 47 via the rotation transmission device 45 by driving the motor 43,
The base portion 35 is moved up and down via a nut 49 screwed into the base. (See FIG. 5) By moving the base 35 up and down, the mold set 29 to be used next among the mold sets 29 mounted in a plurality of stages is provided.
Can be positioned at the exchange position of the automatic mold exchange device described later.

Referring again to FIGS. 1 and 2, on the circumference of the turret 9 composed of the upper turret 5 and the lower turret 7,
In order to mount the mold set 29, a plurality (three in the present embodiment) of mold set mounting areas 55 cut into, for example, a substantially U shape are provided at appropriate intervals. In addition, in FIG. 1, one of the positions of the mold set mounting area 55 is a mold changing position 57.

An automatic die changing device 59 movable in the X-axis and Y-axis directions is provided at the front of the die changing position 57 and the die set storage section 31. The housing 61 (four in the present embodiment), which is at least the same mold mounting portion as the mold set mounting area 55, is provided.

More specifically, referring to FIGS. 1, 2 and 7, the lower frame 63 of the turret punch press 1
A plurality of guide rails extending in the Y-axis direction in FIG.
65 are provided in parallel, and each housing 61 is integrally provided on the guide rail 65 via a plurality of guide members 67.

A ball screw 71 is rotatably supported on bearings 69 provided on both sides of the lower frame 63, and a nut member 73 is screwed onto the ball screw 71. The nut member 73 is attached to a lower part of the housing 61.

With the above configuration, when a drive motor (not shown) is driven, the ball screw 71 rotates, so that the housing 61 is moved in the Y-axis direction via the nut member 73. When the housing 61 is moved in the Y-axis direction, the housing 61 is guided by the guide rail 65, so that the housing 61 moves smoothly.

A plurality of guide rails 75 are provided on the bottom plate 61U of the housing 61 at appropriate intervals so as to extend in the X-axis direction. Each guide rail 75 is provided with an X-axis carriage 79 via a plurality of guide members 77.

The right side wall 61F in FIG.
The X-axis cylinder 81 is attached to the X-axis cylinder 81. The tip of a piston rod 83 attached to the X-axis cylinder 81 is attached to the upper right side wall of the X-axis carriage 79.

With the above configuration, when the X-axis cylinder 81 is operated,
The X-axis carriage 79 is moved in the X-axis direction via the piston rod 83. Note that the X-axis carriage 79 is X
When it is moved in the axial direction, it is guided by the guide rail 75 and moves smoothly.

Each of the housings 61 is provided with an unlocking device 85, and the X-axis carriage 79 is provided with a mold holding portion 87 for holding a mold set. That is, as shown in FIG. 7, as the lock releasing device 85, locking members 89P and 89D extend in the X-axis direction on both upper and lower sides of each housing 61 via guide members (not shown). The locking members 89P and 89D are connected by a connecting member 91 at the right end in FIG.

The right side wall 61 in FIG.
An unlocking cylinder 93 is provided in F, and a piston rod 95 is mounted on the unlocking cylinder 93. The tip of the piston rod 95 is attached to the connecting member 91.

With the above configuration, when the lock release cylinder 93 is operated, the lock members 89P and 89D connected to the connection member 91 via the piston rod 95 are moved in the X-axis direction.
When the locking members 89P and 89D are moved in the X-axis direction, each guide member is guided along each housing 61.

As shown in FIG. 7, as the mold holding portion 87, holding bars 97 for holding a mold set are provided on the upper and lower left sides in FIG. 7 of the X-axis carriage 79, A chuck device 99 is attached to the tip of each holding bar 97.
P, 99D is installed. The chuck devices 99P and 99D have a structure like a known collet chuck.

The respective holding bars 97 correspond to the respective X-axis carriages in FIG.
The connecting bars 101 are integrated with connecting bars 101 protruding rightward in 79, and the connecting bars 101 are connected by connecting members 103. A holding cylinder 105 is provided in each of the X-axis carriages 79, and a piston rod 107 is mounted on the tip (right end in FIG. 7) of the holding cylinder 105. Is the connecting member 103
Mounted on

With the above configuration, when the holding cylinder 105 is operated, the chuck devices 99P and 99D are moved in the X-axis direction via the piston rod 107, the connecting member 103, and the connecting bar 101.

A plurality of mold set mounting areas 55 provided on the upper turret 5 and the lower turret 7 of the turret 9 are mounted with replaceable mold sets.

More specifically, as shown in FIG. 7, a mold base 109 (also referred to as a mold holder) on which the punch P is mounted is provided in the mold set mounting area 55 of the upper turret 5 in FIG. It can be mounted horizontally or removed from the right. Similarly, in the lower turret 7, the die base 111 on which the die D is mounted can be horizontally mounted from the right in FIG. 7 or can be removed from the die set mounting area 55.

The structure in which the mold bases 109 and 111 are mounted on the upper and lower turrets 5 and 7 and the punch P and the die D are attached to the mold bases 109 and 111.
Since the structure attached to is already known, detailed description is omitted. Reference numerals 113 and 115 indicate the chuck devices 99P and 99D.
Are inserted into the holding holes 113 and 115, and the chuck devices 99P and 99D are inserted into the holding holes 113 and 115 to hold the mold bases 109 and 111 and simultaneously withdraw or mount the upper and lower turrets 5 and 7 integrally. .

Next, the mold set 29 is removed from the mold set storage section 31 and is mounted on the mold set mounting area 55 of the turret 9 located at the mold replacement position 57, or the mold set 29 is moved to the mold replacement position 57. A description will be given of an operation of exchanging a mold that is removed from a certain mold set mounting area 55 and stored in the mold set storage unit 31.

First, the housing 61 of the automatic die changing device 59 is moved rightward in the Y-axis direction in FIG.
To the required position. Then, the X-axis cylinder 81 shown in FIG. 7 is operated to move the X-axis carriage 79 toward the mold set storage section 31, and further, the holding cylinder
Activate 105 and chuck device 99P, 99D
In the figure, it moves upward and is mounted in holding holes 113, 115 formed in the die bases 109, 111 on which the punch P and the die D are mounted, and holds the die set 29. Then, it is returned to the original position.

Next, the housing 61 is moved to the left in the Y-axis direction in FIG. 1, and there is an empty housing 61 in which the mold set 29 is not mounted. In this embodiment, there are four housings 61. , The leftmost housing 61 is empty. The empty housing 61 is stopped at the mold changing position 57, and the X-axis cylinder 81 is operated to move the X-axis carriage 79 leftward in FIG.

Next, when the unlocking cylinder 93 is operated, the locking members 89P and 89D are inserted into the upper turret 5 and the lower turret 7,
Release the engagement of the engagement member (not shown) and mold base 109,
111 is in a free state with respect to the upper turret 5 and the lower turret 7, respectively.

After that, the holding cylinder 105 is operated to set the mold base 1
The chuck device 9 is inserted into the holding holes 113 and 115 provided in 09 and 111.
9P and 99D are inserted to hold the mold bases 109 and 111. In this state, the locking members 89P and 89D are moved rightward in FIG. 7 to return to the original positions, whereby the mold bases 109 and 111 of the mold set 29 are removed from the mold set mounting area 55.

Next, the housing 61 holding the mold set 29 is slightly moved in the Y-axis direction in FIG.
After the X-axis carriage 79 is moved to the left in the X-axis direction in FIG. 7, the lock release cylinder 93 is operated to mount the mold set 29 to the mold set position. Insert into region 55.

With the mold set 29 inserted in the mold set mounting area 55, the holding cylinder 105 is operated, and the chuck devices 99P, 99
9D is pulled out from the holding holes 113 and 115, and the lock release cylinder 93 is operated to move the lock members 89P and 89D rightward in FIG. The mold set 29 is the mold set mounting area 55
Will be set to

In the manner described above, the upper turret 5 and the lower turret 7 are rotated to index another mold set mounting area 55 to the mold changing position 57, and then the automatic mold changing apparatus 59 is operated to operate the mold. The mold set 29 set in the set mounting area 55 is removed, and the other mold sets 29 mounted on the housing 61 are sequentially mounted on the mold set mounting area 55.

As described above, since the plurality of mold set mounting areas 55 provided in the turret 9 and at least the same number of housings 61 as the mold mounting portions are provided in the automatic mold changing apparatus 59,
Since a plurality of mold sets 29 can be aligned and exchanged for attachment and detachment, the mold exchange time required for one process can be significantly reduced.

In the present embodiment, the mold sets 29 are housed in the mold set storage section 31 in six rows and three rows in the vertical direction.
Can be stored compactly. As a result, the mold holding area 27
And the exclusive space can be reduced, the traveling stroke of the automatic die changing device 59 can be small, and the size of the entire equipment can be reduced.

FIG. 8 shows a second embodiment in which the mold set 29 stored in the mold storage section 31 is moved up and down. This embodiment differs from the first embodiment in the drive system for moving the mold set storage section 31 up and down.

A screw rod 47 is suspended from a motor 117 provided above the gantry 33 in the mold holding area 27 via a rotation transmission device 119 composed of a bevel gear, and a nut 49 screwed to the screw rod 47 is fixed to the base 35. doing.

With the above configuration, when the motor 117 is driven, the rotation is transmitted to the screw rod 47 via the rotation transmission device 119, and when the screw rod 47 rotates, the base 35 moves up and down via the nut 49, and the mold set storage portion 31 The desired mold set 29 can be positioned at a predetermined position. Note that the motor 117 is AC or DC
As the servomotor, the dog 51 and the pneumatic piston device 53 in the first embodiment may not be provided, and a positioning mechanism using a servomotor may be used.

9 and 10 show a third embodiment in which the mold set 29 housed in the mold housing 31 is moved up and down. This embodiment is different from the first embodiment in the configuration of the mold set storage section 31. The first embodiment employs a vertical moving system. However, the present embodiment employs a gondola type circulation system. The same reference numerals are given and the description is omitted.

The gantry 121 of the mold holding area 27 is fixed to the portal frame 3 of the turret punch press 1 with bolts or the like.
A plurality of rows (three rows in this embodiment) of the mold sets 29 are housed, and a plurality of (eight in this embodiment) mold set storage sections 123 are provided endlessly.

A chain wheel 125 is provided vertically on the gantry 121, and a chain 127
A plurality of support rods 129 are locked. A box section 131 containing the mold set 29 of the mold set storage section 123 is suspended from the support rod 129.

With the above configuration, the chain wheel 125 is rotated by a motor or the like (not shown), and the box 131 suspended from the support rod 129 locked to the chain 127 is moved. Then, when the desired mold set 29 is located at the replacement position, the motor is stopped and the box 131 is positioned with a shot pin or the like (not shown), and the mold set 29 is replaced.

As a result, the width of the device is about half that of the first embodiment, and the number of dies to be stored can be as large as 24 sets. In addition to the effects of the first embodiment, the back side of the die set storage section 123 (10 (Right side in the figure), the effect that the mold set 29 can be replaced can be exhibited.

The present invention is not limited to the embodiments described above, but can be embodied in other forms by making appropriate changes. For example, in this embodiment, the turret 9 is provided with three mold set mounting areas 55,
Although an example in which four housings 61 which are mold mounting portions are used in 59 has been described, the mold set mounting area 55 is further increased, and at least The provision of the housing 61 is also possible.

Further, the number of the mold set storage sections 31 and 123 in which the mold sets 29 are stored is not limited to the present embodiment, and a large number can be provided. Further, the motors 43 and 117 for vertically moving the mold set storage sections 31 and 123 employed in the present embodiment can be changed to fluid pressure operated cylinders.

[Effects of the Invention] As can be understood from the above description of the embodiments, according to the present invention, since the configuration is as described in the claims, the mold set storage portion of the mold holding area As a result, more dies can be held, the occupied space of the die holding area can be reduced, the entire apparatus can be made compact, die setup or maintenance can be performed, and productivity can be improved. .

[Brief description of the drawings]

FIG. 1 is a plan view of a turret punch press according to an embodiment of the present invention, FIG. 2 is a side view of FIG.
FIG. 4 is an enlarged view of the part viewed from the arrow III in FIG. 2, and FIG.
5 is a cross-sectional view taken along the line VV in FIG. 3, FIG. 6 is a plan view in FIG. 3, and FIG. 7 is a VII in FIG. FIG. 8 shows a second embodiment, FIG. 8 shows a cross-sectional view at the same site as FIG. 5, and FIGS. 9 and 10 show a third embodiment. FIG. 10 is a front view of the same part as FIG. 3, FIG. 10 is a right side view of FIG. 9, and FIG. 11 is a plan view of a turret punch press showing a conventional example. 1 Turret punch press 9 Turret 27 Mold holding area 29 Mold set 31 Mold set storage 43 Motor 45 Rotation transmitting device 47 Screw rod 49 …… Nut 51 …… Dog, 53 …… Pneumatic piston device 59 …… Automatic die changing device 117 …… Motor, 119 …… Rotation transmission device 123 …… Die set storage

Claims (1)

(57) [Claims] 1. A turret punch press rotatably provided with a turret supporting a large number of dies, a turret punch press, and a mold holding region for holding a plurality of dies adjacent to the turret is provided. An automatic mold changing device for taking out the mold and mounting it on the turret, reciprocally movable between a position corresponding to the mold holding area and a position corresponding to the turret; A mold set storage section for storing a plurality of rows of mold sets in the horizontal direction and a plurality of stages in the vertical direction is provided, and the mold sets stored in the mold set storage sections are vertically movable and positioned. A turret punch press, characterized in that the turret punch press is provided with a fixing means for performing the above operation.