JP3058722B2 - Mold changing method of injection molding machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for exchanging a mold of an injection molding machine for carrying a mold into or out of a mold clamping device of the injection molding machine.

[0002]

2. Description of the Related Art Conventionally, as a method of exchanging a mold of an injection molding machine,

A) A mold is loaded or unloaded from a lateral direction of the injection molding machine through a mold loading / unloading device from a cart traveling on a rail installed on the floor in parallel with the injection molding machine. . b) A device in which the mold is chucked by the chuck device and the mold is loaded or unloaded from above. Etc. are known. For example, there is a method disclosed in Japanese Utility Model Publication No. 2-2576 as a method which is performed in the lateral direction of a).

In this method, a movable carriage is provided on the side opposite to the operation side of the injection molding machine, and a mold exchanging table having a transfer means for transferring a mold from the side of the injection molding machine is provided on the upper surface of the carriage. Is carried in and out from the lateral direction. B)
From above is described in JP-B-59-48737.
Is described in Japanese Patent Application Publication No.

In this method, a mold stock table having a conveyor roll is installed on the floor on the opposite side of the operation of the injection molding machine, and a column is erected between the mold stock table and the injection molding machine.
A turning arm is provided on the upper surface of this support so as to form a T-shape. At both ends of the arm, chuck devices for chucking a mold are attached, and the chuck device is moved up and down by an elevating cylinder to carry in and out the mold. It is a method to do from. In this case, the loading and unloading of the mold is performed by rotating the arm by 180 degrees.

In another embodiment, instead of a revolving arm, a fixed arm is protruded from above a mold stock table to above an injection molding machine, and a transfer table having a chuck device moves on this arm. It is done in such a way. Also, similarly, from above b),
It is that of Japanese Patent Publication No. 58-18899.

In this method, a traveling rail is erected above the injection molding machine and a mold stocker installed on the side of the injection molding machine at right angles, and a mold transport robot is provided to move on the traveling rail. , Loading of mold by this robot,
Carry out.

Conventionally, a mold changing carriage called a mold carrier is provided on the operation side or the non-operation side of the injection molding machine,
Since the mold is carried in and out in the horizontal direction, installation space for both the injection molding machine and the mold changing device is required, so that the number of machines (M / C) installed per area is reduced. Problem.

[0009]

In the conventional method of exchanging the mold of the injection molding machine, as described above, the injection molding machine is moved from the bogie or the mold stocker installed on the non-operating side or the operating side of the injection molding machine. The loading / unloading of the mold is carried out from the lateral direction by a transfer means into or out of the mold mounting portion, or from above by a chuck device or a transfer robot.

[0010] Therefore, in each case, a truck or a support is required on the side of the injection molding machine, or a support or a support is provided on the side.
Since a traveling rail and a robot, etc., which are installed vertically at right angles to the molding machine, are required, the number of installed injection molding machines per factory area is reduced,
The method using a transfer robot for transferring on a traveling rail is effective when the equipment scale is large, but lacks practicality when the equipment scale is small.

The present invention has been made on the basis of the above circumstances, does not require a space for installation on the floor surface, is compact, can increase the number of installed injection molding machines per the same factory area, and can be used for automatic molds. It is an object of the present invention to provide a method of exchanging a mold of an injection molding machine which enables exchange.

[0012]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a method of clamping a mold on a frame of an injection molding machine, a state along a mold opening direction, and a method of fixing a metal of the mold clamping apparatus. A track is provided between the mold mounting portion and a mold storage means for storing a die mounted on the mold mounting portion, and the mold is held on the track so as to be able to travel and move up and down. A transfer carriage equipped with the obtained mold loading / unloading means is provided, and a mold of an injection molding machine for loading or unloading the mold to / from the mold mounting portion via the transfer carriage equipped with the mold loading / unloading means. In the exchange method.

[0013]

According to the method for exchanging the mold of the injection molding machine of the present invention,
A mold is clamped on the upper part of the frame of the injection molding machine, and the mold to be carried is chucked by the mold carrying-in / out means of the carrying carriage moving on the track provided in the mold opening direction, and the transfer carriage is injection-molded. After moving to the upper part of the mold mounting part of the machine, it is carried in by the mold loading / unloading device. In addition, the mold to be carried out is grasped and carried out from the mold attaching portion to the transfer cart.

At this time, the transfer carriage on which the mold carrying-in / out means is mounted can be installed in the installation space of the injection molding machine by traveling on a track provided on the frame of the injection molding machine. Thus, the number of injection molding machines installed in the same area can be increased.

[0015]

An embodiment of the present invention will be described below with reference to the drawings. The injection molding machine 1 of the present invention includes a frame 2 (a gantry)
The injection device 3 and the mold clamping device 4 are installed on the upper surface of the device.

Further, on the operation side and the non-operation side of the upper surface of the frame 2, two rails 7, 7 composed of rails are laid in parallel along the mold clamping and mold opening directions of the mold clamping device 4. ing. Stoppers 8 are attached to both end portions, respectively.

On these tracks 7, 7 there are provided two wheels 9 on one side, and a chuck as a mold loading / unloading means capable of vertically holding a mold 10 to be loaded and unloaded. A transfer cart 12 on which a king device 11 is mounted is movably mounted.

The transfer carriage 12 is driven by a drive unit 15 (FIG. 3).
(See FIG. 3), the robot can move freely on the tracks 7, 7 and can be stopped at a desired position. The driving device 15 transmits the driving force of the motor 16 with a brake that can be rotated forward and backward to the screw shaft 18 via the speed reduction mechanism 17.
Nut member screwed to screw shaft 18 (not shown)
Is moved.

A movable frame 21 is provided on the transfer carriage 12 so as to straddle the upper part of the mold mounting portion 20 of the injection molding machine 1. The movable frame 21 has two ends, the cylinder rods 22 of the two hydraulic cylinders 22, 22.
a, 22a are supported by being attached to the upper end thereof, and are vertically movable. Further, a movable frame 21 is provided upright, and the chucking device 11 is attached substantially at the center of the movable frame 21.

In the chucking device 11, a rod (not shown) is inserted into a hanging hole (not shown) provided in a mold mounting plate 10a of the mold 10 by an air cylinder (not shown). Chucking is performed.

A guide member (not shown) for guiding the mold 10 when loading and unloading the mold 10, a landing stopper, and an automatic mold clamping device are attached to the fixed die plate 6 and the movable die plate 25. Have been.

Further, at one end in the traveling direction of the transfer carriage 12 on which the chucking device 11 is mounted, that is, at a position above the mold clamping cylinder 5, a rotatable transfer on which a plurality of dies 10 can be placed. A loading turntable 30 is provided to constitute a mold storage means 31. On the turntable 30,
The molds 10 can be stacked on the A side 30a and the B side 30b one by one.

Next, the operation will be described. When the mold 10 is carried in, the mold 10 to be used (hereinafter, referred to as a next mold) is placed on the A side 30 a of the turntable 30. On the other hand, the transfer truck 1 equipped with the chucking device 11
The mold 2 is moved to a position facing the mold mounting section 20, and the mold (hereinafter referred to as a cash mold) 10 which has been used so far is carried upward. Thereafter, while the cash mold 10 is being chucked, the transfer cart 12 is moved in the mold clamping direction, that is, in the direction in which the mold storage means 31 is arranged, and the cash mold 10 is lowered to the B side 30b of the turntable 30. Transfer. Then
The turntable 30 rotates 180 °.

Thereafter, the next die 10 placed on the A side 30a of the turntable 30 and moved to the B side 30b side is chucked by the chucking device 11 and lifted upward to be fixed in the fixed die direction 6. That is, it is moved in the direction of the mold mounting portion 20, and then the next mold 10 is lowered by the chucking device 11 until it comes into contact with the landing stopper. Then, it is fixed to the fixed die plate 6 and the moving plate 25 by an automatic die clamping device. This completes the loading operation of the next mold 10.

As described above, according to the present invention, the mold clamping device 4 is clamped on the frame 2 of the injection molding machine 1 in a state along the mold opening direction, and the mold mounting portion 20 of the mold clamping device 4 Tracks 7 and 7 are provided between the metal mold storage means 31 for storing the mold 10 mounted on the mold mounting portion 20 and the molds 10 can run on the tracks 7 and 7 and the mold 10 can be moved. A transfer truck 12 having a chucking device 11 as a mold loading / unloading means which can be held up and down freely is provided.
The loading and unloading of the mold 10 to and from the mold mounting portion 20 is performed via the.

Therefore, according to this mold exchanging method,
The transfer cart 12 equipped with the chucking device 11 can be installed in the installation space of the injection molding machine 1 by traveling on the tracks 7, 7 provided on the frame 2 of the injection molding machine 1. Injection molding machine 1 in the same area
Can be increased.

Further, by making the mold storage means 31 a rotatable turntable 30 on which a plurality of dies 10 can be placed, the dies can be exchanged more efficiently. . It is needless to say that the present invention can be variously modified without departing from the scope of the invention.

[0028]

As described above, according to the present invention, the mold clamping device is mounted on the frame of the injection molding machine in a state along the mold opening direction and the mold mounting portion of the mold clamping device. A trajectory is provided between the dies and the mold storage means for storing the dies attached to the mold mounting portion, and the dies can be moved on the trajectories and the dies can be vertically moved. The present invention relates to a method of exchanging a mold of an injection molding machine for providing a transfer carriage having means mounted thereon, and for carrying a mold into or out of the mold clamping device via the transfer carriage having the mold carry-in / out means.

Therefore, according to this mold exchanging method,
The transfer carriage equipped with the mold loading / unloading means can be installed in the installation space of the injection molding machine by traveling on the track provided on the frame of the injection molding machine, and can be installed in the same area. The effect of this is that the number of installed injection molding machines can be increased.

[Brief description of the drawings]

FIG. 1 is a schematic front view showing an embodiment of an injection molding machine to which a mold changing method of the present invention can be applied.

FIG. 2 is a schematic plan view of FIG.

FIG. 3 is a schematic right side view of FIG. 1;

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Injection molding machine, 2 ... Frame, 3 ... Injection device, 4 ... Mold clamping device, 7 ... Track, 10 ... Die, 11 ... Chucking device (die loading / unloading means), 12 ... Transfer trolley, 20 ... Mold mounting part, 30. Turn table, 31. Mold storage means.

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-2-128805 (JP, A) JP-A-63-267530 (JP, A) JP-A-62-233813 (JP, A) 116823 (JP, A) JP-A-63-116822 (JP, A) JP-A-3-19812 (JP, A) JP-A 64-71712 (JP, A) JP-A-62-191114 (JP, A) JP-A-59-83607 (JP, A) JP-A-61-53124 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) B29C 45/00-45/84

Claims (2)

(57) [Claims] 1. A mold clamped on a frame of an injection molding machine, along a mold opening direction, and a mold mounting portion of the mold clamping device and a mold mounted on the mold mounting portion. A track is provided between the mold storage means for storing the mold, and a transfer carriage equipped with a mold loading / unloading means capable of running on the track and vertically holding the mold is provided. A method of exchanging a mold of an injection molding machine, wherein a mold is carried into or out of the mold mounting portion via a transfer carriage equipped with the mold carrying-in / out means. 2. The method according to claim 1, wherein the mold storage means has a rotatable turntable structure on which a plurality of molds can be placed.