JPH0366428A - Die exchanging method for turret punch press and turret punch press - Google Patents

Abstract

PURPOSE:To improve the workability by exchanging the die holder except the die holder being indexed at the working position for the die holder with plural dies mounted preliminarily prepared during the press working with the die holder exchanging device set in its neighbourhood. CONSTITUTION:Plural die holders with plural dies mounted are set freely attachably and detachably at the upper turret 21 and the lower turret 23 of being a rotary body. One die holder of these plural die holders in indexed at the working position. Because the striker 11 of being freely movable to the position of plural dies mounting on the above die holder is set at the upper position of the working position, so one kind of the punching is worked by plural dies with the up and down motion of this striker. While working, the die holder is exchanged with the die holder exchanging device 33 which is arranged in the neighbourhood of another die holder. Therefore, the workability is improved and also the tool management is easily executed.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Field of Industrial Application) This invention relates to a mold changing method in a turret punch press and a turret punch press.

(Prior art) Conventionally, the method for replacing molds in turret punch presses has been to replace the tool one by one, or to replace the entire mold holder, but during replacement, the turret is moved to the holder replacement position. The machine rotated, processing stopped, and replacement work was carried out.

(Problems to be Solved by the Invention) By the way, in the conventional method of changing the mold of a turret punch press, it takes a lot of time to change the tool every time the tool required for processing changes.
Since the press operation is stopped, productivity cannot be improved, and tool management becomes complicated.

The purpose of this invention is to improve the above-mentioned problems, and the object of the present invention is to provide a turret punch press that allows unused mold holders to be replaced even during punching processing, improves productivity, and facilitates tool management. An object of the present invention is to provide a mold changing method and a turret punch press.

[Structure 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 plurality of molds are attached to a rotating body at attachment/detachment positions. Among the mold holders, the mold holders other than the mold holder indexed to the processing position are replaced by a plurality of mold holders prepared in advance during press processing using a mold holder exchange device installed near this mold holder. This is a method for replacing a mold in a turret punch press, in which a mold holder with a mold attached thereto is replaced.

Further, the present invention provides a plurality of mold holders detachably provided on a rotating body, a plurality of molds attached to each of the mold holders, and a processing position of the plurality of mold holders. A striker is provided movably to the positions of a plurality of molds attached to the mold holder indexed to the processing position, and a striker is provided in the vicinity of the mold holder other than the mold holder indexed to the processing position. A turret punch press was constructed by including a mold holder exchange device and a mold holder exchange device.

(Function) By employing the method for exchanging molds in a turret punch press and the turret punch press of the present invention, a plurality of mold holders each having a plurality of molds mounted thereon are detachably provided on the rotating body.

One of the plurality of mold holders is indexed to a processing position. A striker is provided above the processing position and is movable to the positions of a plurality of molds mounted on the mold holder, so that by vertical movement of this striker, a plurality of molds can be cut into one type, for example. The punching process is performed.

While the punching process is being performed, the die holder is replaced by a die holder exchanger installed near another die holder.

(Example) Hereinafter, an example of the present invention will be described in detail based on the drawings.

First, the overall structure of the turret punch press will be schematically explained.

Referring to FIG. 8, the turret punch press 1 is composed of a C-shaped frame 7 that is made up of an upper frame 3 and a lower frame 5. Although not shown, a striker 11 is installed vertically in the C-shaped frame 7 via a double crank 9 that can handle uneven loads by a drive source such as an electric motor. The striker 11 is movable in the X-axis direction (direction perpendicular to the plane of the paper in FIG. 8) via a drive member (for example, a ball screw, nut, etc.) not shown in the drawings from a motor 13, and a cylinder operated by fluid pressure. 15, it is configured to be movable in the Y-axis direction (horizontal direction in FIG. 8).

Directly below the slider 11, a plurality of upper mold holders 19 equipped with a plurality of punch airs are radially arranged and fixed to an upper turret 21 which is a rotating body.

The lower turret 2 is opposite to the lower part of the upper turret 21.
3 is supported by a lower frame 5, and a plurality of lower mold holders 25 are radially arranged and locked to a lower turret 23, which is a rotating body. A die 27 is inserted into each lower mold holder 25 at a position corresponding to the punch 17. Note that the upper turret 21. The lower turret 23 is rotated by an electric motor or the like (not shown).

With the above configuration, the vertical movement of the striker 11 set at a predetermined position presses the punch 17 of the upper mold holder 19 that is locked to the upper turret knot 21, and the punch 17 of the upper mold holder 19 is pressed against the lower mold holder 25 of the lower turret 23. Punching is performed in cooperation with the provided die 27.

On the other hand, a clamp 31 is supported by two slide members provided in the C-shaped frame 7, and the clamp 31 is used to support the workpiece W.
Grasp one end of the

With the above configuration, the workpiece W is held by the clamp 31,
It is positioned at a predetermined position between the upper and lower turrets 21, 23 by the slide member 29 in accordance with command values from an NC device or the like. The upper and lower turrets 21 and 23 similarly rotate according to command values, and predetermined molds (bunch 17 and die 27) are positioned at the processing point, and punching is performed.

Furthermore, in order to exchange a plurality of mold holders 19.25 attached to the upper and lower turrets 21.23, a mold holder exchange device (hereinafter referred to as A) is installed near the upper and lower turrets 21.23.
It's called a TC changer. ) 33 are provided. Although this ATC changer 33 has a generally known configuration and will not be described in detail, the gear transmission member 33 is operated by a motor 35 etc.
Rotate the three balls via 7. A plurality of arms 41 are protruded from the left and right sides and above and below the ball 39, and a locking claw member 43 is provided at the tip of the arm 41. The locking pawl member 43 is movable in the Y-axis direction by a cylinder 45 operated by hydraulic pressure, and a pawl 47 at the tip of the locking member 43 is provided so as to be movable up and down via a bullet 49.

With the above configuration, among the mold holders 19.25 provided on the upper and lower turrets 21.23, the mold holder 19 under processing is
．． The mold holder 1925 on the opposite side of the mold holder 25 is locked with the claw 47 of the locking claw member 43 provided on the arm 41 of the ATC changer 33, and pulled out from the upper and lower turrets 21 and 23. Although not shown, a mold holder in which a mold for the next processing is set is locked to the other arm 41 of the ATC changer 33, so that it drives the electric motor 35 of the ATC changer 33 and connects the gear transmission member. ball 3 through 37
9, remove the upper and lower mold holders 19.25, position them in the upper and lower turrets 21.23, and place the new upper and lower mold holders 19.25 into the upper and lower turrets 21. Attach it to .23.

Further, the upper and lower mold holders 19.25 and the ATC changer 33 attached to the upper and lower turrets 21.23 will be explained in detail with reference to FIGS. 1 to 4. Note that the upper and lower mold holders 19 and 25 that are locked to the upper and lower turrets 21 and 23 are combined with locking means of the same structure, so the upper mold holder 19 that is locked to the upper turret 21 However, the explanation of the lower mold holder 25 locked to the lower turret 23 will be omitted.

The upper turret 21, which is a rotating body, is equipped with an upper mold holder 19 that is radially divided into four directions, and each upper mold holder 19 is equipped with punch air necessary to process at least one type of product. is set. Convex portions 51 are provided on both side surfaces of the upper mold holder 19, and are engaged with engagement grooves 53 provided in the upper turret 21. on the other hand,
The upper turret 21 is provided with a cylinder 55 operated by hydraulic pressure, and is provided with a clamp member 59 which is a locking member that opens and closes when the piston 57 of the cylinder 55 moves back and forth, and the claw portion 61 of the clamp member 59 is attached to the upper mold. The holder 19 is engaged with a shoulder 65 of a projection 63 provided on the holder 19 and held there. (See FIG. 3) With the above configuration, bunch air necessary for processing at least one type of product is set in one upper mold holder 19 during processing. Although not shown, the striker 11 can operate all the punches 17 in one upper mold holder, so there is no need to rotate the upper and lower turrets 21 and 23 to process one product. . In addition, both the upper and lower mold holders 19.25 are firmly fixed together with a clamp member 59 by operating hydraulic cylinders 55 built into the upper and lower turrets 21.23, which are rotating bodies. has been done.

On the other hand, the ATC changer 33 has a plurality of arms 41 (two in this embodiment) arranged on both sides of the ball 39, and is moved forward and backward by a hydraulic cylinder 45 that is engaged with the arms 41. A movable locking claw member 43 is provided. The locking pawl member 43 has a pawl 47 formed at its tip, a bullet 49 is attached between the tips of the arm 41, and the locking pawl member 43 is always urged upward. The pawl 47 can be freely engaged and disengaged from a locking hole 67 provided on the back surface of the upper and lower mold holders 19.25 mounted on the upper and lower turrets 21.23. (See FIG. 4) With the above structure, the upper and lower mold holders 19.
Among the mold holders 25, the mold holder 19° 25 on the opposite side to the mold holder being processed is pulled out by the ATC changer 33. To pull it out, the claw 47 of the locking claw member 43 provided on the arm 41 of the ATC changer 33 is activated by the hydraulic cylinder 45 to engage the claw 47 provided on the back surface of the upper and lower mold holders 19.25. Insert into the stop hole 67.

After insertion, the elastic force of the bullet 49 can securely lock the bullet, and the clamp member 59 is opened by operating the cylinder 55 provided on the lower turret 21 and 23 to move the piston 57 forward. Release the clamp. From this state, the cylinder 45 of the ATC changer 33 is operated to pull out the upper and lower mold holders 19 and 25 from the upper and lower turrets 21 and 23.

Upper and lower mold holders 19.25 and ATC changer 3
An example of the arrangement with No. 3 is shown in FIG. As shown in the figure, a work W held by two clamps 31 of sliding members
is set at a predetermined processing position, and punching is performed by the punch 17 and die 27 provided in the upper and lower mold holders 19 and 25 working together. The upper and lower mold holders 19.25 during processing and the opposite mold holder 1.9.25 are pulled out and replaced by the ATC changer 33. Note that the ATC changer 33 is provided at a position where it does not interfere with the movement of the workpiece W.

The upper and lower mold holders 19.25 extracted by the ATC changer 33 are pivoted to a transfer position 69.

At the transfer position 69, the bunch 17 necessary for the next processing is
And the top with die 27 incorporated.

The lower mold holder 19.25 is taken out by the locking claw member 43 of the other arm 41 of the ATC changer 33, and the lower turret I'21. 23. Incidentally, in order to transport the upper and lower mold holders 19, 25 by the ATC changer 33, it is a matter of course that a transport table or rail is provided.

As mentioned above, the outer shape of the upper and lower mold holders 19.25 and the setting to the upper and lower turrets 21.23, which are rotating bodies, are all unified, and multiple mold holders can be used for one press body. I own 21 and 23. Therefore, tools can be easily managed, and tools specific to each product can be managed as one mold holder. Also,
Suitable for scheduled operation, unused mold holders can be freely changed and maintained externally without stopping the machine.

The above matters can be expressed as a diagram as shown in Figure 6. That is, by using a mold holder that combines optimal tools, it is possible to handle various processed products and improve productivity.

In addition, the ATC changer 33 is capable of automatic operation and can perform mold conversion without operator intervention, storing molds in sets on shelves, performing conversion for each set, and considering only mold conversion. Instead, we have further developed the ATC concept by considering the entire subsequent machining process and the setup before and after it.

FIG. 7 shows another embodiment, in which the same parts as those in the first embodiment are given the same reference numerals and the explanation thereof will be omitted.

This embodiment is adopted for an X- and Y-axis moving type punch press 1, and holders 71A and 71B, on which a plurality of tools can be mounted according to a series of machining orders, are rotatable ATCs by hydraulic cylinders 73A and 73B, respectively. It is attached to the changer 75.

With the above configuration, at the holder exchange position 77, the holder 71A or 71B with the tool properly set in advance is AT operated by the hydraulic cylinder 73A or 73B.
It is drawn to the C changer 75, rotated 180 degrees, and moved to the punch position to perform processing. For example, holder 71A
When the holder 71B is in the punching position, the holder 71B is in seven holder carry-out positions on the opposite side, and is carried out to the holder exchange position 77 by the cylinder 73B. Next, the tools in the holder 77B carried out to the holder exchange position 77 are freely set, converted into tools necessary for the next machining, and left on standby.

Thus, tool setup and machining can proceed simultaneously without stopping the machine.

It should be noted that the present invention is not limited to the embodiments described above, but can be implemented in other embodiments by making appropriate changes. For example, in this embodiment, one mold holder is provided with molds necessary for processing one type of product, but the present invention is not limited to this.

[Effects of the Invention] As can be understood from the above description of the embodiments, according to the present invention, in addition to being a rotating body, a mold holder is detachably provided in the lower turret, for example, radially, and the mold holder can be replaced. Remove the mold holders that are not being processed by the device from the upper and lower turrets. Further, the mold holder, which has already been set with the mold necessary for the next processing, is locked in the mold holder conversion device, and the mold holder is replaced.

As a result, the mold holder can be replaced during the punching process, improving work efficiency and making tool management easier.

[Brief explanation of drawings]

Figures 1 to 4 show the main parts of this invention.
The figure is an enlarged sectional view taken along line I-1 in Figure 8,
The figure is a side view taken along the line ■-■ in FIG. 1, FIG. 3 is an enlarged view of the section viewed from the arrow ■ in FIG. 1, and FIG. 4 is an enlarged sectional view taken along the line IV-■ in FIG. 1. , Fig. 5 is an explanatory diagram of the operation, Fig. 6 is an explanatory diagram of scheduling in which the mold holder and the processed product correspond, Fig. 7 is a plan explanatory diagram showing another embodiment, and Fig. 8 is an explanatory diagram of the present invention. It is a side view of the turret punch press of one Example. 1... Turret punch press 11... Striker 17... One punch... Upper mold holder 21... Upper turret 23... Lower turret 25... Lower mold holder 27... die
33...Mold holder exchange device 41...Arm 43
... Locking claw member 47 ... Claw 49 ... Bullet 51 ... Convex portion 53 ... Engagement groove 55 ... Cylinder 57 ... Piston 59 ... Clamp member 67 ... - Locking holes 71A, 7iB...Holder 75...Mold holder exchange device

Claims (2)

[Claims] (1) Among a plurality of mold holders with a plurality of molds attached to a rotary body in a turret punch press, the mold holders other than the mold holder indexed to the processing position are Mold exchange in a turret punch press, characterized in that the die holder is replaced with a die holder equipped with a plurality of pre-prepared dies during press processing using a die holder exchange device installed near the die holder. Method. (2) a plurality of mold holders detachably provided on a rotating body; a plurality of molds attached to each mold holder;
A striker movably provided to the positions of a plurality of molds attached to a mold holder indexed to a processing position among the plurality of mold holders, and a mold indexed to the processing position. A turret punch press comprising: a mold holder exchange device provided near a mold holder other than the holder.