JPS61154722A - Automatic metal die exchanging method of press work machine - Google Patents

Abstract

PURPOSE:To reduce the loss in time and to exchange safely by providing the storing rack of metal dies with adjoining a press working machine, by storing to the rack with removing by a control device one part of the upper die or lower die and by taking off substitute metal die. CONSTITUTION:The metal die housing 25 to incorporate freely rotatively automatic tool exchanging devices 17, 19, upper die rack group 21 and lower die rack group 23 at the position adjoining in the longitudinal direction of the upper and lower dies of a press brake. A rack plate 29 is driven with the numerical control by the pinion gear 31 provided on the upper and lower parts of the center of a parallel part, locating the necessary upper die rack 21 and lower die rack 23 on the corresponding position of the automatic metal die changing device 17, 19. The holding bodies 33, 35 of the automatic metal die changing device 17, 19 move in parallel to the longitudinal direction of the upper die and lower die with being guided by freely elastic rail members 37, 39. It is thus delivered upto the upper die rack 21 and lower die rack 23 with moving upto the metal die housing 25 is necessary.

Description

[Detailed Description of the Invention] a. Field of Industrial Application The present invention relates to an automatic mold changing method for a press machine, and more specifically, a cylindrical or oval mold with a large cross section provided adjacent to the press machine. A cylindrical rotating rack is used as a storage shelf for an appropriate number of upper molds and lower molds, and at least one of the upper molds or the lower molds is removed by a numerical control device, transferred to the rack and stored, and a replacement mold is taken out. This invention relates to an automatic die changing method for a press machine that is transferred and converted.

b. Conventional technology For example, in press processing machines such as press brakes, jarring machines, and punch presses, which process an upper mold and a lower mold as a pair and place a plate material between them, there is no storage rack for the molds nearby. Replacing molds, such as transporting them separately to the warehouse, was a time-consuming and dangerous process that was unsatisfactory.

C1 Problems to be Solved by the Invention The above-mentioned conventional apparatus had disadvantages such as large time loss and danger.

Means for Solving the d1 Problem The automatic die changing method of the present invention uses a device that installs a die storage rack adjacent to the press machine and separately removes and moves the upper die and the lower die. The molds can be transported to separate racks for the upper mold and the lower mold at the same time, and the replacement mold can be taken out and moved automatically at the same time.

81 Effect As is already clear, the method of the present invention makes it possible to automatically replace the upper and lower molds and to attach and detach them even at the same time.

f. Embodiment FIG. 1 shows a press brake 1 as an example of a press machine, in which the machine frame is formed by an upper frame 5 connecting side frames 3L and 3R above and a lower frame 7 connecting them below. A lower mold 9 is mounted on the lower frame 7.

The upper frame 5 is provided with a ram 13 that is driven up and down by hydraulic cylinders IIL and 11R, and an upper die 15 is attached to the lower end of the ram 13.

The lower mold 9 described above is a collection of divided lower molds 9D, and the upper mold 1
1 constitutes an assembly of split upper molds 15D, and a plate material W placed between the lower mold 9 and the upper mold 11 is pressurized and bent into a downward convex shape.

A mold storage unit rotatably incorporates an automatic tool changer 17, 19 (see Fig. 3), an upper mold rack group 21, and a lower mold rack group 23 in a position adjacent to the upper and lower molds in the longitudinal direction of the press brake 1. A storage compartment 25 is provided.

In the example shown in FIG. 3, the racks numbered 1 to 6 are the upper mold racks 21, and the racks numbered 7 to 12 are the lower mold racks 23.

All of the racks mentioned above are connected by links (not shown) and are kept at equal distances, and a plurality of cylindrical rails 27 with an oval cross section are held between wheels, etc., and a rack plate 29 is provided on the outer peripheral side. is held.

The rack plate 29 is connected in a straight line in the upper and lower parallel parts of the rail 27, and for example, the rack plate 29 is connected to the upper and lower parts of the rail 27 by pinion gears provided above and below the center of the parallel part.
Automatic mold changer driven by numerical control in 31 17.1
The desired upper mold rack 21 and lower mold rack 23 are placed in two corresponding positions.
and position it.

The gripping body 33.35 of the automatic mold changer 17.19 moves in parallel to the longitudinal direction of the upper mold 15 and the lower mold 9, guided by, for example, a telescopic rail member 37.39. In this way, if necessary, the upper and lower molds are divided into 1/2 or 1/3 of their length and moved to the mold storage 25 and transported to the upper mold rack 21 or the lower mold rack 23.

To move a desired replacement mold to the ram 13 and the lower frame 7, the upper mold rack 21 and the lower mold rack 23 are rotated by the pinion gear 31 and then carried in by the reverse operation described above.

What is shown in FIG. 4 is an explanatory diagram of the control device 41 of the present invention.
The motor M1 is an electric motor such as a servo motor that rotates the pinion gear 31 in both positive and negative directions, and M2 is an electric motor such as a servo motor that controls the moving distance of the automatic mold changing device 17.19.

Similarly, PGl and PG2 are electric! jI machine M1, M2
The encoder feeds back the rotational speed of the electric motor to the control device 41.

Further, the control device 41 is configured to manually input the desired upper, lower, and both mold rack numbers, and positions for carrying out and carrying in the upper and lower molds.

q3 Effects of the Invention As is already clear from the detailed description above, according to the method of the present invention, the upper and lower parts of the upper and lower molds that are currently installed, and the mold rack that is to be carried out and stored. Manually input the number, the mold number to be replaced and brought in, and the location to be taken out and brought in.

This alone allowed the mold to be replaced automatically, allowing it to be done quickly and safely by remote control.

Note that it is clear that the control means can be easily changed not only in the above-mentioned embodiments but without departing from the technical idea of the present invention.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a press brake and mold storage as an example machine implementing the present invention.FIG. 2 is an explanatory diagram showing the press brake and mold storage installed next to each other.FIG. FIG. 4, which is a cross-sectional view taken along the line {--}, is a block diagram illustrating the control method. (Explanatory diagram showing the main parts of the drawing) 1...Press brake 9...Lower die 15...Upper die 17...Automatic mold exchange equipment 21...
Upper rack 23...lower rack 11...
1 River (2118 Proceedings (spontaneous) December 13, 1985 Director General of the Patent Office Uga Michibu 1, Indication of the case Patent Application No. 1983-273923 2,
Title of invention Automatic mold changing method for press processing machine 3.
Relationship with the case of the person making the amendment Patent applicant address (residence) 200 Ishida, Isehara City, Kanagawa Prefecture Name (
Name) AMADA Co., Ltd. Representative ゛ Ten 1) Mitsuru Akira 4, Agent address 1-12 Toranomon, Minato-ku, Tokyo 105 1:12
Number 3 Toranomon 5th floor, Building Telephone: Tokyo (504) 3075, 3076, 3077
No. (2) Drawing 6, Contents of amendment (1) Among the drawings, Figure 3 will be amended as shown in the attached sheet. (2) Change “Upper mold 11” on page 3, line 18 of the specification to “
The upper mold 15j is corrected. (3) Akira 11t1! Page 4, line 4 “Mold storage! 25
” and “It is a provision.” [Figures 1 and 2]
Insert "as shown in the figure. (4) Correct "number of rotations, 1" on page 5, line 17 of the specification to "amount of rotation."

Claims (2)

[Claims] (1) An appropriate number of cylindrical or oval-shaped rotary racks with large cross sections installed adjacent to the press processing machine are used as storage shelves for upper and lower molds, and at least one of the upper molds or the lower molds is stored numerically. An automatic die changing method for a press working machine, characterized in that the die is removed by a control device, transferred to a rack and stored, and a replacement die is taken out, transferred, and replaced. (2) When replacing both the above-mentioned upper mold and lower mold,
2. The automatic die changing method for a press working machine according to claim 1, wherein a pair of attachment/detachment mechanisms for an upper die and a lower die are operated simultaneously.