JPS59191599A - Die exchanger - Google Patents

Abstract

PURPOSE:To permit preparation and storage of many press dies and to put in and out automatically the desired press die by running a connected carriage group on a storage table, and positioning the carriage carrying the desired press die on a charging table. CONSTITUTION:A carriage group G is advanced in the case of charging a hemming die B into a press device P. The stopper plate of a carriage B1 contacts with a stopper pin and the advancing limit of the carriage B1 detects a dog Aad and transmits a signal to stop a hydraulic motor K2, thereby stopping the advance of the group G and positioning the carriage B1 in a charging part F for the hemming die. When the carriage B1 is lowered together with a carriage rail 14a by a lifting cylinder, the rail for the die contacts with the conveying chain of a mechanism for charging and conveying the hemming die. The releasing cylinder of a device for fixing and releasing the hemming die is then operated to release the projection for fixing. When the charging and discharging chain is rotated forward, the detaining means provided to the chain is detained to a hook and draws the die B on a stationary rail, thereby charging the hemming die into the press device P.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a mold changing device that can automatically change press molds.

An example of a conventional press die changing device is the one shown in Figure 1, which automatically takes in and out four hemming dies prepared and stored on both sides of the press machine base as needed. .

Its configuration is centered around the press device P at a constant interval W.
Two fixed rails 1 on the main body side having a diameter of 100 mm are laid symmetrically to a required position outside the mold, protruding outward from both sides, and a hemming mold loading/unloading mechanism (not shown) is provided in the center thereof.

Storage platforms 3 and 4 are each provided with two truck rails 2 extending directly from the fixed rail 1. In addition, on one storage stand 3, two sets of two mold rails 5 with a constant interval W are installed parallel to the fixed rail 1, and four hemming molds A with wheels are installed.
, B on which a six-wheeled trolley 6 is provided on the trolley rail 2, and is located in front of the storage platform 3 (
A cylinder 9 fixed to the lower surface of the storage table 3 is connected to a forward stopper 7 and a backward stopper 8 which are erected at both ends (right side in the drawing) and rear (left side in the drawing),
This action allows it to travel back and forth.
The other storage stand 4 also has a hemming type C1D mounted thereon with a similar configuration, and is prepared and stored therein.

Since the structure is for ironwork, in order to put the hemming die A into the press device P, the trolley 6 is moved backward and brought into contact with the backward stopper 8, and the die rail 5 on which the hemming die A is placed is moved backward. is connected to the extension line of the main body side fixed rail 1, that is, the hemming die is positioned at the hemming die insertion part F. Therefore, the hemming mold A is set by being hooked with the hook 10 provided by the input and ejection I+S structure and pulled into the press apparatus iP.

Next, when carrying out the hemming die B, after returning the hemming die A from the press device P to the moving rail 5 waiting in the loading section F by the reverse movement of the loading/unloading mechanism, the cart 6 is moved forward. When the hemming die B is brought into contact with the advance stopper 7, the hemming die B is positioned in the input portion F, and therefore, the hemming die B is set in the press device P in the same manner as for the hemming die.

The loading and unloading of the hemming dies C and D placed on the other storage stand 4 is also carried out in the same manner.

However, in such a conventional mold changing device, the storage trolley is a common trolley for two press molds, and the forward movement, which is erected at both ends of all storage racks, is used to position the press molds to be loaded into the loading section. The process was carried out by bringing the cart into contact with the stopper or retraction stopper, and the normal preparation and storage location for each press die was at a fixed location. The number of press dies on the stand is limited to two, and even if both sides are used, only four press dies can be used, and there is a problem in that it is not possible to prepare and store more press dies.

This invention was made by focusing on such conventional problems, and a long storage platform is equipped with a press-type truck, and each truck is connected and runs on a truck rail. A stopper plate equipped on the trolley and a pair of stosopabi installed in the press mold input section are combined by a limit switch arranged on the storage stand, so that a desired press mold can be selected for assignment. The aim is to solve the above problems.

Hereinafter, one embodiment of the present invention will be described based on FIG. 2 and subsequent figures. The same members as in the conventional example are designated by the same reference numerals.
I will omit that explanation.

First, the overall configuration will be described with reference to FIG. 2. In this embodiment, four hemming molds A, B, C, and D are placed on four-wheeled carts AI, B1, CI, and Dl, respectively. Carts connected sequentially by connecting links 11 to form a group G are arranged on a storage stand 13 installed on a frame 12 on one side of the press apparatus P. The storage platform 13 is arranged in series with its center line aligned with the terminals of the 14 hemming-type loading tables on which one truck is placed, and the center line is aligned with the terminals of the main body side fixed rails 1, 1. Sub-storage platform 15.16 that can hold three trolleys symmetrically in front
Two truck rails 14a, 15a, 16a are arranged in series on each platform 14.degree. 15.16 perpendicular to the extension line of the fixed rail 1. As a truck driving device, a hydraulic motor 2 is installed on the pedestal 12, and a hydraulic motor 2 is installed at the rear end of the storage platform 13, and a sprocket 3 is installed at the front end of the storage platform 13. The rear end of the truck L) 1 is connected to the roller chain 4 through the sprocket 3 and the sprocket 1 in a ring shape, and by rotation of the hydraulic motor 2, the truck group G is
/ - Runs back and forth on the wheels 14a, 15a, 16a. In addition, a forward limit switch (hereinafter referred to as rLsJ) dog Aad is located on the lower center surface of the trolley A1, and
Reverse LS dogs Dbd are installed on the lower center of the truck D1, and operate by contacting these dogs Aad and Dbd to decelerate and stop the trucks AI, 81, CI, and DI on the loading platform and 14, respectively. LS, that is, bogie AI backward pttLSAbl, bogie AI backward d speed LsAbs, bogie B1 backward limit LSBbA! , trolley B,
1 backward deceleration LSBbs, bogie C1 backward “guy 1,5Cb
1. Taito C1 backward deceleration LSCbs is secondary storage stand 15
At *'ri 'l')+, also, the trolley B I A
+J advance deceleration LSBaS9 bogie B1 forward limit], 5Bal,
Bogie C1 forward deceleration LSCas, bogie C1 forward limit +,, +
5Cal + bogie LJ1 forward deceleration LSDas, bogie L) 1
Advance limits L S 1) a6 are provided at required locations on the sub storage platform 16, respectively.

Next, see Figures 3 and 4 for all sets of configuration features for each member side.
The explanation is based on the diagram.

Valley hemming types A, H, C, and D are equipped with a total of four wheels H1 (Z), two at the lower end of the front and two at the rear, and supported by H, S, and H, which protrude diagonally downward in the center in both UA+ directions and are inserted. Hook H
2 is formed, and a fixing protrusion H3 is provided at a predetermined location on the lower surface to be fixed to the trolley.

In Tanion Shichihe 1, B1, CI, and lJl, mold rails 5 on which hemming molds are placed on the upper surfaces of the front and rear ends are spaced at a certain interval W and are positioned 20 dragons higher than the fixed rail 1. The end of the rail 5 on the press group (to) P side is formed on a downward slope 5a, so that when the mold is inserted, the vehicle is mounted on the upward slope 1a of the end of the fixed rail 1. It has become. Then, the fixing protrusion H3 is fixed at a predetermined location from the opposite direction of the press device P.A metal fitting R1 is fixed to the metal fitting R1, and the head of the mold metal fitting R2 is fixed to the metal fitting R1 so as to be rotatable in the vertical direction. The projection H3 is clamped and fixed by the portion R2a. In addition, there is a rolling wheel R at the end of the mold fitting R2.
3 and locking weight f (4 is attached and the head R
2a is always urged to rotate counterclockwise. Also, on the bottom center surface, there is a trolley stopper plate S.
P is provided.

In the hemming type loading table 14, two truck rails 14a are supported by four rail lifting cylinders 14c erected on the one truck 14b.
A reference metal fitting 14d is installed on the middle shaft 4b. A piston rod 14q of a stopper cylinder 14f, which is rotatably bolted in the vertical direction to a bracket 14e standing upright on a pedestal '14b in front of the metal fitting 14d, is pinned at one end of the reference metal fitting 14dK. L^”Fringe 1
An L-shaped link 14h is connected to an L-shaped link 14h, which is connected to the other end of the metal fitting 14d and fixed to the J, 1'1 part of the metal fitting 14d so as to be able to move vertically. ing. In addition, a backward stopper pin bS is installed in a similar configuration to the forward stopper pin aS, and the movement of the stopper cylinder 14f causes the carriage stopper plate SPk both stopper pins to move as shown in FIG. as and bS are clamped so that they can be raised and lowered and set in the mink type input section F to the trolley.

2. Hemming-type fixing release device H) (is also erected on an arm member 14k that is vertically rotatably pinned to the tip of a support 14j that is erected at a predetermined position on the pedestal 14b. The distal end of the piston rod 14n of the release cylinder 14m is connected to the bracket N41 so as to be rotatable laterally.

As shown in Fig. 3, the connecting link 11 is bolted to the connecting carriages so that they can rotate in the vertical direction, so that even if there is a slight difference in height between the carriages, they will not interfere with each other. I try not to.

Next, we will discuss the effect.

First, in order to introduce the hemming type Bi press into the hemming type Bi press apparatus P from the state shown in FIG. 2, the hydraulic motor 2 is rotated in the forward direction to move the truck group G forward. In that case, it is stored in advance that hemming type B is being input using an electric control device (not shown).

While the bogie group G is moving forward, the forward LS dog Aadi equipped with bogie A1 and the propulsion deceleration Svas of bogie B1 detect it and send a signal. Cylinder 14fftl!
With one movement, the forward stopper pin aS is rotated upward, and the carriage stopper plate SP of the carriage B1 is set to be stopped. Subsequently, the stopper plate SP moves to the stopper bin aS, and the forward limit LSBal of the bogie B1 is reached.
detects the dog Aad and sends a signal to the hydraulic motor.
By stopping the bogie group G, the forward movement of the bogie group G is stopped, and the rear stopper cylinder 14f rotates the backward stopper pin bS upward, and the stopper plate SP can be slid downwardly with the forward stopper (pin aS). Position the stand 11 in the hemming mold input part F by holding it in place.

Therefore, the lift cylinder 14c moves the carriage 81' together with the carriage rail 14a! When lowered by approximately 201 + Im, the die rail 5 overlaps the slope 5a with the slope 1a and connects with the fixed rail 1, and the tip of the charging hook H2 of the hemming die B placed on the fixed rail 1, General conveyance chain P of the hemming-type feeding conveyance mechanism installed in the center of 1.
abuts on c. Next, when the release cylinder 14m of the hemming type identification release device HR is operated to raise the piston rod 14nk, the arm member 14 is connected to the mold fitting R2 via the rolling wheel R3v.
The fixing protrusion H3 is rotated to lower the rear part R2a.
In this case, the support is completely released from being held by the metal fitting R1 and becomes free. Then, when the loading/unloading chain Pck is rotated forward in the direction of the arrow T, the hook Pd attached to the chain Pc is hooked to the hook H2, and the hemming die B is pulled into the fixed rail 1 and into the press machine P. throw into.

Next, when the hemming mold B is to be returned to the trolley B1, the above-mentioned operation is reversed. In addition, when hemming type C, L) 1 bogie #4-G is moved forward to position 1~, put it in, or take it out of the loading section F, it is performed according to the same procedure as the above-mentioned operation. To load and unload hemming molds A, 8, and C by retreating, the operation is almost the same as the above except that the backward stopper pin bs operates before the forward stopper pin aS when positioning it to the front loading section F. Perform according to the instructions.

The flowchart shown in FIG. 5 is a diagram summarizing the series of operations of each member on the diagonal. In this example, a storage table was provided on one side of the press machine. By providing on both sides, more molds can be stored.
r=J-no.

As explained above, this invention allows each press die to run on a long press or a storage platform as a carriage in a group of connected carriages, and install limit switches at the required locations for reading. After positioning the carriage carrying the n-th press mold on the loading table installed in the center of the storage table using a pair of movable stopper pins, it is released from the press mold carriage and loaded into the press machine. Because of this configuration, it is possible not only to prepare and store a large number of press dies, but also to be able to select any press dies as needed and automatically move them in and out of the press equipment.

[Brief explanation of drawings]

Fig. 1 is a diagram showing the ridges of a conventional hemming die changing device, where ■ is a plan view, ■ is a front view, and Fig. 2 is a diagram showing an outline of the die changing device of the present invention. , Figure I is a plan view,
11 is a front view, FIG. 3 1 is a partially cutaway enlarged front view related to the hemming mold loading table, and FIG. 11 is II-- of FIG.
11 line sectional view, FIG. 4 is a partially cutaway enlarged side view related to the hemming mold loading table, and FIG. 5 is a flowchart showing the operations of the main operating members. P...Press device A, B, C, D...Hemming type F...
・・・・・・Hemming type input part G・・・・・・Bogie group C1.81, CI, DI・・・・・・Bolly 1
4... Hemming mold loading table 14 a + 15 a, 16 a...
・Bogie rail SP...Bolly stopper plate aS...Forward stopper pin bs...Backward stopper pin

Claims (1)

[Claims] In a die changing device that is installed on the side of a press machine and is configured to exchange dies by laying a rail, a group of at least three bogies each mounted with a stopper plate and connected to each other are used. A pair of stoppers provided on the stopper plate at the mold insertion part move the desired trolley forward or backward on the rail, and move the desired trolley based on the signal from a limit switch disposed along the rail to detect the position of the trolley. A mold changing device characterized by having a configuration in which a pin is engaged to position the mold, and a mold is loaded into and taken out from a press device.