JP3005662B2 - 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 dies in an injection molding machine, and more particularly to a method for exchanging dies which does not require installation space and saves space.

[0002]

2. Description of the Related Art There are a number of conventional die changing apparatuses and methods. However, a die is loaded and unloaded from a cart installed on a floor in parallel with a molding machine, and a die is loaded and unloaded from a lateral side of the molding machine by a discharge device. There is already known one that performs chucking by a chuck device and performs it from above. Hereinafter, these techniques will be briefly described.

[0003] In the mold changing apparatus described in Japanese Utility Model Publication No. 2-2576, a movable cart is provided on the non-operating side of the molding machine, and the mold is transferred to the upper surface of the cart from the lateral direction of the molding machine. A mold exchanging table having a transfer means is provided to carry the mold in and out from the lateral direction.

In Japanese Patent Publication No. 59-48737, a mold stock table having a conveyor roll is installed on the floor opposite to the operation side of the injection molding machine as shown in the embodiment. A stanchion is erected between the mold stock table and the injection molding machine, and a turning arm is provided on the upper surface of the stanchion so as to form a T-shape, and a chuck device for chucking a mold at both ends of the arm is provided. In this method, the mold is loaded and unloaded from above by moving the chuck device up and down by a lifting cylinder. In this case, the loading and unloading of the mold is performed by turning the arm 180 degrees. In another embodiment, a fixed arm, not a swivel arm, is protruded from above a mold stock table to above an injection molding machine, and a transfer table having a chuck device is moved on this arm. It is.

[0005] Also, Japanese Patent Publication No. 58-18899 discloses a method which is performed from above. 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 that moves on the traveling rail is provided. The carry-in and carry-out of the mold are performed.

[0006]

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 and unloading of the mold is carried out from the lateral direction by a transfer means into the mold mounting part, and the loading and unloading of the mold from above by a chuck device or a transfer robot. It is necessary, or a support post is required on the side, and a running rail and a robot, etc., which are erected at right angles to the molding machine, are required.Therefore, the number of installed 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.

SUMMARY OF THE INVENTION It is an object of the present invention to eliminate the need for an installation space for a floor, to increase the number of molding machines installed per unit area of a compact plant, and to automatically exchange dies.

[0008]

In order to achieve the above object, a method of exchanging a mold of an injection molding machine according to the present invention comprises a method of clamping a mold on an upper portion of a mold clamping device of an injection molding machine and laying the track in a mold opening direction on a track. placing the mold to produce carry and transportable to transfer Okugyo table to move, provided in an upper portion of the mold mounting portion of the molding machine out morphism, loading of the mold in the vertical direction, the die for performing unloading loading the mold to be carried by the unloading device and chucked from the transfer Okugyo table is loaded into the mold mounting portion, prior Kikin type loading, said mold was unloaded from the mold mounting portions in unloading device This is a method for changing the mold of an injection molding machine that is mounted on a transfer carriage and carried out , and is used for loading the mold.
At the time, the mold to be carried in is chucked from the transfer carriage.
After moving up and moving the transfer table,
Evacuate from the top and unload the mold when unloading
The mold should be chucked from the mold mounting part and raised.
After that, the transfer carriage is moved to the upper part of the mold mounting part.
The method of exchanging the mold of the injection molding machine to be performed was adopted.

According to the frequency of mold exchange and the factory layout, if one or two transfer / transfer tables or a turntable having a turntable structure are selected and used, the mold exchange can be performed more efficiently.

[0010]

[Function] The mold is clamped on the upper part of the mold clamping device of the injection molding machine, and is carried into the transfer carriage moving on the track laid in the mold opening direction.
The mold should give fine transportable placed, provided at the top of the mold mounting portion of the molding machine out morphism, loading of the mold in the vertical direction, the mold carrying performing unloading, the mold to be carried by the unloading device wherein the transfer Okugyo stand chucks carried into the mold mounting portion, prior Kikin type loading, unloading the mold taken out of the mold mounting portion in the unloading device is placed in the transfer Okugyo table Mold changing method of injection molding machine
In transferring the mold, the mold to be carried in is transferred.
Chuck from the carriage and raise it after the transfer
Retract the base from the upper part of the mold mounting part, then check
In addition to moving the mold down,
While the transfer carriage is retracted, the mold to be unloaded
Chucking from the mold mounting part, raising it and carrying it out
Then, move the transfer carriage to the upper part of the mold mounting part.
You.

According to the frequency of mold exchange and the layout of the factory, one or two transfer / transfer tables or a turntable structure can be selected and used, so that the mold exchange can be performed more efficiently. .

[0012]

An embodiment will be described with reference to the drawings. FIG. 1 shows an embodiment of the present invention. In an injection molding machine 1, an injection device 3 and a mold clamping device 4 are installed on an upper surface of a frame 2. The mold is clamped on the upper part of the mold clamping device 4, that is, between the mold clamping cylinder 5 and the fixed die plate 6, and two tracks 7 are laid in parallel in the mold opening direction. Stoppers 8 are attached to both end surfaces of these tracks, respectively.

On the upper surface of the track 7, a transfer table 11 having four wheels 9 on one side, on which a mold 10 to be loaded and unloaded is placed and moved, is mounted movably in the track direction. . The transfer table 11 is moved by a driving device (not shown) to the track 7.
It can be moved up freely and stopped at a desired position. This drive device is composed of a motor with a brake that can rotate forward and backward, a speed reducer, and the like.

A gate-shaped frame 13 is erected on the upper part of the mold mounting portion 12 of the injection molding machine 1 across the track 7.
A mold loading / unloading device 14 is provided substantially at the center of the frame 13.
Is installed. The mold loading / unloading device 14 is composed of a hydraulic cylinder 15 and a mold chucking device 17 vertically provided at a tip of a cylinder rod 16 of the hydraulic cylinder 15. The mold chucking device 17 is an air cylinder. 18, the rod 21 of the mold chucking device 17 is inserted into the hanging hole 20 provided in the mold mounting plate 19 of the mold 10 to chuck the mold.

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 22. Have been.

Next, the operation will be described. When the mold 10 is carried in, the mold 10 to be used (hereinafter, referred to as the next mold) is placed on the transfer / transportation table 11 at the position (A), and the mold 10 is placed below the mold carrying-in / out device 14 (B). ), The mold chucking device 17 is lowered, the next mold 10 is chucked and slightly lifted, and then the transfer / transport table 11 is returned to the original position. 10 is suspended and lowered until the next mold 10 contacts the landing stopper. Then, it is fixed to the fixed die plate 6 and the movable plate 22 by an automatic die clamping device. This is the next mold 1
The loading operation of 0 is completed. When unloading, the operation is performed in the reverse of the loading operation.

In this embodiment, the mold loading / unloading device 1 is used.
Although the drive source of 4 is based on the hydraulic cylinder 15, a lift device combining a servo motor and a ball screw or a lift device combining an electric motor, a worm gear, a lifting screw and the like can be used.

FIG. 3 and FIG. 4 show another embodiment, and the same members as those in FIG. Hereinafter, only different members will be described.

Upper part of the mold clamping device 4, that is, the mold clamping cylinder 5
A track 37 is laid on the upper portion between the mold and the fixed die plate 6 in parallel with the mold opening direction. Track 37 is shown in FIG.
Is provided in an overhanging manner on the side of the injection device 3 longer than the transfer carriage 11b by the amount of the placement of the transfer carriage 11b, and is located at both ends (A) and (C) on the track 37. 1
1a and 11b are provided.

Next, the operation will be described. In the operation of loading the next die 10 and unloading the die (hereinafter referred to as cash die) 10b which has been used, the next die 10 is first placed on the transfer stage 11a at the position (A). Next, the mold chucking device 17 of the mold carry-in / carry-out device 14 descends, removes the cash mold 10b from the fixed die plate 6 and the movable die plate 22, and chucks the cash mold 10b.
7, the transfer carriage 11b is moved from the position (C) to the position (B) while the die chucking device 17 is lowered to move the cash 10b to the transfer carriage 11.
b. Then, the transfer carriage 11b is returned to the original (C).
It returns to the position and the unloading operation ends. Next, the transfer stage 11a on which the next die 10 is placed is moved from the position (A) to the position (B), and the die chucking device 17 is lowered to make the next die 10 move.
And lift it slightly upward to return the transfer / transport table 11a to the (A) position. Next, the mold chucking device 17 is lowered to the mold mounting portion 12 until it stops at the landing stopper, and the carry-in operation of the next mold 10 is completed.

FIGS. 5 and 6 show still another embodiment of the present invention. As in the embodiment shown in FIGS. 1 to 4, the mold 38 of the injection molding machine 1 is closed and the track 38 is opened in the mold opening direction. Is laid. Orbit 3 different from that of the previous embodiment
8 is divided into two parts in the longitudinal direction, and one side thereof is provided on the upper surface of a turntable 39 which can be turned by 180 degrees, and the transfer tables 11a and 11b are mounted on the turntable 39. The frame 40 supporting the mold chucking device 17 has a box shape. The mold chucking device 1 is provided on the upper surface of the mold mounting portion 12 of the injection molding machine 1.
7 are provided.

The turning drive of the turntable 39 is performed by a mechanism using a brake motor with a speed reducer (not shown), attaching a pinion to the motor shaft, and meshing the pinion with a large gear provided on the outer periphery of the turntable 39. It has become. Of course, it is also possible to adopt another method, for example, a method using warm and warm hocool.

Next, the operation will be described. For the loading operation of the next die 10 and the unloading operation of the cash die 10b, first, the next die 10 is placed on the transfer table 11a on the (A) side of the turntable 39. Next, the mold chucking device 17 is connected to the injection molding machine 1.
And the cash die 10b is chucked and raised to the upper limit. In this state, the transfer carriage 11b on the (B) side on the turntable 39 is moved to the cash type 1
0b and the cash mold 10 is placed on the transfer carriage 11b.
b is returned to the (B) side on the turntable 39 and the unloading operation is completed.

Next, the turntable 39 is turned by 180 degrees to move the transfer stage 11a on which the next mold 10 is mounted to the upper portion of the mold mounting portion 12, and the next mold 10 is moved by the mold chucking device 17. The mold chucking device 1 is chucked, raised to the ascending limit, and returned to its original position.
7 is lowered to carry the next mold 10 into the mold mounting portion 12. This completes the loading operation of the next mold 10.

[0025]

Since the present invention is a mold exchanging method as described above, a mold exchanging apparatus of an injection molding machine using this method does not require an installation space, is compact, and has a small size. Automatic exchange of the mold can be easily performed for each unit.

Further, one or two of the transfer / transport tables for placing and moving the dies at the time of loading and unloading the dies are selected and used depending on the mold replacement frequency and the factory layout. The mold exchange can be performed more efficiently.

Further, the method can be efficiently performed by selecting and using a method in which two transfer / transportation platforms are provided on the track on the turntable.

[Brief description of the drawings]

FIG. 1 is a front view showing an embodiment of a method for exchanging a mold of an injection molding machine according to the present invention.

FIG. 2 is a plan view of FIG.

FIG. 3 is a front view showing another embodiment of the method for exchanging the mold of the injection molding machine of the present invention.

FIG. 4 is a partial plan view of FIG. 3;

FIG. 5 is a front view showing still another embodiment of the mold changing method of the injection molding machine according to the present invention.

FIG. 6 is a partial plan view of FIG. 5;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Injection molding machine 2 Frame 3 Injection device 4 Mold clamping device 7 Track 10 Die 11 Transfer / transport table 12 Die mounting part 14 Die loading / unloading device 17 Die chucking device 37 Trajectory 38 Trajectory

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int. Cl. ⁷ , DB name) B29C 45/26-45/44

Claims (5)

(57) [Claims] 1. A mold clamp on an upper part of a mold clamp device of an injection molding machine,
Mold opening by placing the mold to produce beauty transportable Oyo carried into the transfer Okugyo table that moves on a track that is laid in the direction, provided at the top of the mold mounting portion of the molding machine out morphism, mold in the vertical direction The die to be loaded and unloaded is chucked from the transfer / transportation stand by the die to be loaded by the loading / unloading device , and is loaded into the die mounting portion. The die loading and unloading device described above. The mold exchange of the injection molding machine, in which the mold carried out from the mold mounting portion is placed on the transfer carriage and carried out.
A method for replacing , when loading the mold, the mold to be transported from the transfer carriage.
After chucking and raising, move the transfer carriage to the gold
Evacuate from the upper part of the mold mounting part, and
And chuck the mold to be carried out from the mold mounting part.
And then raise the transfer carriage over the mold mounting part.
A method for exchanging a mold of an injection molding machine, comprising: 2. The method according to claim 1, wherein the transfer / transportation stand comprises a single unit and is used commonly for carrying in and out the mold. 3. The method according to claim 1, wherein the transfer / transfer platform comprises two units, and is used for loading and unloading the die. 4. The method according to claim 1, wherein said track is of a fixed type which is not divided in the longitudinal direction. 5. The method according to claim 1, wherein the track is divided into two parts in a longitudinal direction, and one of the two parts is provided on an upper surface of a turntable.