JPS5927665B2 - Press machine mold changing device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a mold changing device for a press machine that uses a plurality of molds in one press machine.

Conventionally, when replacing the molds in a press machine that uses multiple molds in one machine, first hook a wire to the used mold 1 and connect it to the used mold 1, as shown in Figure 1. The wire is pulled by a crane through a pulley, etc., and the mold 1 is carried out to one side of the press machine 2, where it is moved forward together with the unused mold 3. Mold 3 to press machine 2
In the same way, the mold 3 is brought in with a crane and set, and after being pressed, the mold 3 is taken out from the press machine 2 again, and the mold 3 is
After moving the mold 1 backwards, the mold 1 is transferred to the press machine 2 again.
The conventional method was to use only one side of the press machine as a space for changing molds, which required a considerable amount of time to change the molds, reducing the operating rate of the press process.

The present invention was made in order to solve the above-mentioned conventional problems, and in order to shorten the time required for changing molds, both sides of the press machine are used as mold changing spaces, and the molds inside the press machine are replaced. It is an object of the present invention to provide a mold changing device that allows other molds outside the press machine to be carried into the press machine at the same time as they are carried out.

The present invention will be described below with reference to illustrative embodiments.

a is a press machine, 11 is a press slide, 12 is a bed S
13 is a bolster, and wheels 14, which are guide members, are pivotally attached to the left and right front and rear ends of the bolster 13, respectively, and can roll freely in the left and right direction on a rail surface 39 that serves as a guide rail on the upper surface of the bed 12. Further, a hook 15, which is an engaged portion that engages with an engaging portion 26 of a carrier drive device, which will be described later, is provided protruding from the center of the left and right ends.

A portion of the bed 12 corresponding to the wheel 14 when the bolster 13 is set is cut out 12a, and a support member 17 that moves up and down by a cylinder 16 embedded in the notch 12a is fitted into the notch 12a. is provided with a groove 18 penetrating in the left-right direction, and a rack gear 19 is provided in the groove 18.
has been installed. Reference numeral 20 designates a positioning projection for the bolster 13, which is provided on the bed 12.

The carrier drive device has a forward/reverse motor 21, a small gear 22 that is interlocked with the motor 21, and meshes with the small gear 22.
and a pinion 23 that meshes with the rack gear 19;
Wheels 24 rolling on the rail surface 39 on the top surface of the bed 12
and a carrier 25 that rotatably supports them. Engagement portions 26 are provided at the left and right ends of the carrier 25, with which the hooks 15 of the bolster 13 are engaged.

c is a mold 27 arranged on both left and right sides of the press machine a.
A moving device for moving the support member 13 back and forth together with the bolster 13, the guide rail extension part 28 on which the wheels 14 of the bolster 13 roll, the support member 29 that supports the guide rail extension part 28, and the support member 29. a beam 30 for fixing the lower end of the press a, a rack gear 31 extending in the front-rear direction on the center lower surface of the beam 30 in the left and right direction, and a rack gear 31 provided on the left and right lower surfaces of the beam 30 on both left and right sides of the press a. It consists of a truck 34 consisting of wheels 33 that roll on truck rails 32 laid on the floor, and a forward/reverse motor 36 having a pinion 35 that meshes with the rack gear 31. Mold 2
7 is a lower mold 27a fixed on the bolster 13;
An upper mold 27b is superimposed on the lower mold 27a and is engaged with the press slide 11 in the press machine a and moves up and down.
It is made up of.

The mold 27, the bolster 13, and the wheel 14 constitute a mold set. In the above embodiment, the carrier drive device b is of a gear drive type, but it is not limited to this type; for example, as shown in FIG. Both ends of the rod 38 may be fixed in the groove 18 of the bed 12 of the press a, the cylinder 37 and the carrier 25 may be connected, and the carrier 25 may be moved.

Next, the operation of the present invention will be explained.

First, the bolster 13 on which the mold 271 is placed and the mold 272
The carrier drive device b connected to the hook 15 protruding from the bolster 13 on which the mold 271 is placed is operated, and the used mold 271 in the press a is carried out onto the cart 34 of one of the moving devices c, and the other The mold 272 placed on the carriage 34A of the moving device e is carried into the press machine a.

(See Fig. 5, A and A.) After that, the cylinder 16 is lowered and the wheel 14 is inserted into the notch 12a of the bed 12, and the bolster 1
The mold 272 with the mold 3 in contact with the bed 12 is set in a predetermined position. During the pressing operation using the mold 272, the truck 34 of one of the moving devices c is moved forward, and the bolster 13 on which the mold 273 is placed on the truck 34 is connected to the carrier drive device b. (See Figure 5 C.) Next, when the used mold 272 that has finished pressing is pushed up by the cylinder 16 and becomes movable, the carrier drive device b is operated in the opposite direction to the above. While carrying out the mold 272 onto the trolley 34A of the other moving device c,
Mold 273 placed on the trolley 34 of one moving device c
will be brought in. (See FIG. 5 2) During the pressing operation using the mold 273, the cart 34A of the other moving device c is advanced,
The bolster 13 on which the mold 274 is placed, which is placed on the trolley 34A, is connected to the carrier drive device b. (See Figure 5 E) Next, the used mold 273 that has finished the press work is carried out to the trolley 34 of one moving device c, and the mold 274 placed on the trolley 34A of the other moving device c is carried in. let (Refer to FIG. 5) During the pressing operation using the mold 274, the truck 34 of one of the moving devices c is moved backward, and the truck 34 is moved backward.
The bolster 13 on which the mold 271 is placed is connected to the carrier drive device b. (See Figure 5) Next, the used mold 274 that has finished the pressing operation is carried out to the cart 34A of the other moving device c, and the mold 271 placed on the cart 34 of the one moving device c is transferred. Have it brought in. (
(See FIG. 5 H) During the pressing operation using the mold 271, the truck 34A of the other moving device c is moved backward, and the bolster 13 on which the mold 272 is placed on the truck 34A is transferred to the carrier drive device b. Connect. (See Figure 5 A) As described above, according to the present invention, in a press machine that uses a plurality of molds, a plurality of molds are installed on both sides of the press. A carrier drive device is disposed in the bed of the press machine so as to be movable back and forth along the press machine, and a carrier drive device is disposed in the bed of the press machine so as to be movable in the left and right direction. Carry out and carry in the mold exchange at the same time using the above-mentioned carrier drive device, and during press work, move the left and right molds outside the press machine back and forth as appropriate to prepare for transport into the next press machine. This method is indispensable for production lines that handle different workpieces each time, as it can significantly shorten mold change time and improve press working efficiency.

In addition, although the above example was explained using four molds, there is no limit to the number of molds, and the effect becomes more apparent as the number of molds increases. ,
The workpiece is carried in by raising the upper mold after setting the mold.
Next, the upper die may be lowered to perform molding, and then the upper die may be raised to carry out the workpiece, and the upper die may be lowered again. When a mold is set in the machine, a molded workpiece is always inserted in the mold, and when the upper mold is raised, the molded workpiece is carried out, and the next workpiece before molding ( After carrying in (or material), the upper die is lowered to perform the molding, and after forming, the upper die is removed from the slide and the die is transported as it is, thereby reducing the number of times the upper die is raised and lowered, and further reducing press processing time. Since the time is shortened, if it is performed in conjunction with the above-mentioned mold replacement method, it has the effect of further improving the operation rate of press working.

[Brief explanation of drawings]

1A to 2 are schematic plan views showing a conventional mold changing method, FIG. 2 is a partially cutaway front view of a press machine equipped with a mold changing device according to the present invention, and FIG. FIG. 4 is a partially cutaway enlarged front view of main parts showing another embodiment of the present invention, and FIGS. 5-1 show a mold replacement method according to the present invention. FIG. 2 is a schematic plan view. a is a press machine, b is a carrier drive device, c is a moving device,
12 is a bed, 13 is a bolster, 14 is a wheel, 15 is a hook, 18 is a groove, 19 is a rack gear, 21 is a forward/reverse motor, 23 is a pinion, 25 is a carrier, 26 is an engaging part, 27 is a mold, 34 is a trolley, 36 is a forward/reverse motor, 3
7 is cylinder, 38 is rod.

Claims (1)

[Claims] 1 Guide rails are horizontally installed on the upper surface of the bed of the press machine in the left-right direction, at least two guide rails are disposed on one side of the left and right sides of the press machine, and at least one carriage is disposed on the other side, and the A bogie rail that guides the bogie in the front-rear direction is installed horizontally, and each of the bogies has a guide rail extension section that can be connected to the guide rail installed laterally in the left-right direction. A mold set including a mold, a bolster to which the mold is fixed, and a guide member for guiding the mold along the guide rail and the guide rail extension is mounted on the guide rail extension of each truck. Further, the press machine is provided with a carrier that moves parallel to the guide rail by a carrier drive device, and engaging portions are provided on the left and right sides of the carrier, and the press machine is provided with a carrier that moves parallel to the guide rail by a carrier drive device. On the left side of the bolster and on the right side of the bolster of the left side mold set, an engaged part that can be engaged and detached from the engaging part of the carrier is provided. When the upper die is in the assembly position to the press slide of the press machine and the other die set is on a trolley with a guide rail and a guide rail extension connected to the guide rail, the engaging part and the engaged part are connected to each other. A die changing device for a press machine, characterized in that it is engageable.