JPS59124823A - Exchanger for screw cylinder of injection molding machine - Google Patents

Abstract

PURPOSE:To raise the efficiency of injection molding operations as well as to shorten the stopping time of injection as much as possible by using a system in which the screw cylinder of an injection molding machine is easily and quickly exchanged with new screw cylinder. CONSTITUTION:A post 11 is erectly provided on a base 8 set close to an injection molding machine 1 in a slidable manner in the direction of crossing the longitudinal axis of the molding machine 1 and also in a turnable manner in the circumferential direction. An oil-pressure cylinder 18 to move the post 11 in a slidable manner and a motor 12 to turn the post 11 are provided to the base 8. The post 11 is attached with paired guide arms 13 facing each other, where the post 11 is centered, and provided with a clutch claw 17 to grasp the screw cylinder 13 and an oil-pressure cylinder 18 to move the clutch claw 17. The screw cylinder 5 is removed from the molding machine 1 by one clutch claw 17, and the other screw cylinder 5 is attached to the injection molding machine 1 by the other clutch claw. The exchange of the screw cylinder 5 can thus be simply made by operating the oil-pressure cylinder 18, the motor 12, and the clutch claw 17.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a screw/cylinder exchange device for an injection molding machine.

Do the screws and cylinders installed in injection molding machines require maintenance such as cleaning? It is necessary to perform a certain amount of free shots in case of changing the plastic material being injected.

The above maintenance is conventionally done using a 4'2 hanging tool.
Either remove the cylinder and the injection molding machine body y+', or
Alternatively, I try to do it with just one installation, but it takes a certain amount of time and effort to operate the hanging tools, and it takes a long time to stop the work. Otherwise, the work becomes cumbersome, the stop time for coloring becomes long, and the efficiency of the molding work decreases.

The above-mentioned free shot is necessary to avoid defects in the molded product due to mixing with plastic material of another type or color, which is first put into the screw cylinder and mixed with the remaining plastic material. As long as different plastic materials are used, waste of plastic materials and waste of time due to free shots is unavoidable.

This invention was made based on the above-mentioned background, and consists of a fixed screw and a
The cylinder is configured so that it can be quickly and easily replaced with a new screw/cylinder automatically or within a 10-meter operation, and injection stops for 1 hour and 4 hours due to maintenance of the screw/cylinder. Free shots when changing materials to a separate building or plastic material of a different color)
It is an object of the present invention to provide a screw/cylinder exchange device for an injection molding machine that can be omitted and thereby improve the efficiency of injection molding operations.

This invention will be explained below with reference to the drawings.

No figure 1! , g7 Figure 1 shows an example of the power of the invention, 1 shows the main body of an injection molding machine, and above the main body 1 of the injection molding machine there is a cross direction perpendicular to the length direction of the main body 1 of the injection molding machine. A potato-shaped injection table 2 is provided on the side of the opening r, and a screw cylinder 5, which is held in place by mounting blocks 3 and 4, is mounted on this injection table 2, and a screw cylinder 5 is mounted on the mounting block 3°. 4. The injection table 2 can be inserted into the recess of the injection molding table 2 to be movable in the width direction of the injection molding 1.
The injection table 2 is also removably provided through the opening 1fii of the mounting blocks 3 and 4. In the figure, 6 is a hydraulic cylinder that fixes the mounting blocks 3 and 4 to the injection table 2, and 7 is a handling block that is attached to the injection table 2 and protrudes from the injection table opening side of the mounting block 3.4. It is.

On the other hand, on the side of the injection molding machine main body 10 in the width direction, there is a hollow base 8 on which guide shoes 8a, 8a of large size are mounted on the upper surface. is set up. A support 9 is erected on the base 8 so as to be movable by the guide shoes ga, 8a, and the support 9 is erected on the base 8 by the guide shoes ga, 3a.
A hydraulic cylinder 10 is attached to move the vehicle.

The above-mentioned support column 9VC is supported so that the post 11 can swing horizontally with its axis vertical, and is also placed inside the base 8 and has a boss on the bottom surface of the support column 9. A rotation motor 12 that rotates at a corner is attached to the upper part of the post 11, which is approximately at the same height as the injection table 2 of the injection molding machine main body 1. 11. Same as each other, opening fAI on each side.
The gripping mechanisms 1-1 and 1-1 having the guide arm 13 having a U-shaped side surface with a BA formed therein are arranged in such a manner that the openings 13Aχ of the guide arm 13 are oriented in mutually opposite directions and 41-1 are substantially parallel to each other; , is mounted horizontally. The guide arm 13 is constructed by connecting guide pieces 13a and 132 that are arranged vertically and parallel to each other at the crotch part 13b. A grasping hand 14 is provided so as to be movable along the line. At the end of the gripping hand 14 on the opening 13A side of the guide arm 13, there is an opening/closing cylinder 1 installed beside the guide arm 13.
5 is connected to the link 16, ] 6'Y valve is connected to 1
The gripping claws 17, 17 are provided so as to be openable and closable, and the gripping claws 17, 17 are opened and closed by the opening/closing cylinder 15 so as to be able to hold the handling block 7. In other words, the opening/closing cylinder 15 and the connecting link 16.1
6 constitutes the opening/closing mechanism K.

Further, the crotch portion 13bK of the guide arm 13 is connected to the gripping hand 14.
One hydraulic cylinder 18 is attached to the cylinder rod 18a, and this hydraulic cylinder 18
is moved by the cylinder rod 18alC between the guide pieces 1:3a and 13a of the guide arm 13 in the gripping hand 14, and this movement causes the gripping claws 17, l7'
The guide arm 1 is made to protrude from the opening 13A of the guide arm 1: (.In other words, the guide arm 13, the gripping hand 14, the opening/closing mechanism 1, the hydraulic cylinder 18, and the gripping structure L'l as the main body. configured.

The rotation motor 12 is rotated alternately in opposite directions at the rotation angle of the boss II in 180', thereby opening the pair of guide arms 13 at the ends of the openings g-1413A and I+11.
'1 is made to alternately face the opening of the injection table 2, and by sliding the guide arm to the stop of the boss) IIY'J injection molding machine using the hydraulic cylinder 10, the tip of the guide arm]3 opening]3Ai1111 ? They can be brought into contact with the openings 1111 of the injection table 2 alternately.

In addition, 20 in the figure is a hydraulic clamp to which the tip of the guide piece 13a of the main part of the guide arm J3 is attached to the mounting block 4 and the guide arm 13vc-i. The handling block 7 is gripped by the claws 17, 17, and fixed to the tip 4jffB of the other inner arm 13 by a hydraulic clamp 20, and a fixed second screw cylinder 22 is connected to the J: end of the post 11 and fixed rotary. A joint 23 is a terminal box provided above the gripping mechanism H.

? 'K configured as above 7. z1 of this invention
Explain the usage.

In the event that public funds are incurred for the use of one plastic material attached to the injection table 2 and placed in the first screw cylinder 5, and seven plastic materials of a different type or color,
First, 10 hydraulic cylinders are operated to advance the boss IIY so that one of the guide arms 13 comes into contact with the end surface on the opening side of the tip injection table 2.

The hydraulic cylinder 18 is operated slightly to move the gripping hand 14 toward the injection table 2 side, and the gripping claws 17 grip the seven non-link blocks. ? ' to release the hydraulic clamp 6, lock the mounting block 3.4 against the injection table 2, and pull the grip hand 14 into the guide arm 13 using the hydraulic cylinder 18.

This causes the first screw cylinder 54 to be drawn into the tip g#1 of the guide arm 13. Next, the first screw cylinder 5 is locked to the guide arm 13 by the hydraulic clamp 20. Next, operate 10 hydraulic cylinders to move the post 11 back.

By the way, the gripping claw 7 of the other gripping mechanism H is used to grip the second screw cylinder 21 after the above operation is completed.

Subsequently, the posts 11 are rotated by 180 degrees by the rotation motor 12, and the posts 11 are advanced so that the tip of the guide arm 13 of the other gripping mechanism H comes into contact with the end of the injection table 2. Here, the second screw cylinder 21 held by the gripping claw 17 by the hydraulic cylinder 18 is placed in the recess of the injection table 2, and the second screw cylinder 21 is fixed to the injection table 2 by the hydraulic clamp 6. Next, the gripping claw 17' is opened and the gripping hole 1 is opened.
14 and return to the other guide arm 13.

Operate the hydraulic clamp 6.20'f of the injection cylinders 5 and 21 to connect the hydraulic cylinder 10 and the rotation motor 1.
2, opening/closing/opening/closing the cylinder 15 and the hydraulic cylinder 18 can be done with only simple operations, making it easy and quick to do the paternity work. Therefore, when using a separate building or plastic material of a different color, all you have to do is replace the 8 degree screw and cylinder fO. .

In addition, if maintenance of the first screw cylinder 5 becomes necessary, the screw cylinder 5 is removed from the injection) iY, jf4 machine body and maintenance is performed as described above. At this time, the first screw cylinder 5 is held by the gripping hand 14 in this state! Maintenance work can be carried out immediately at a glance. In other words, the uninvented device can be used as a removed screw cylinder 50 workbench, improving the hL rate of maintenance work.

In addition, screw cylinder 5, 21. In the case of the father, the other gripping mechanism H should hold the screw cylinder 21 before replacing it. @Heat and screw/cylinder 2
It is desirable to maintain the operating temperature at 1, and in this case, the operation can be started as soon as the cylinder is replaced.

Furthermore, the actual replacement time using the prototype machine was about 1 minute.

As explained above, the present invention is arranged so that f'LT is reinstalled adjacent to the main body of the injection molding machine, and the f'LT is placed on the base with sliding marks in the direction orthogonal to the longitudinal axis of the injection molding machine, and on the circumference. A post Y is erected at the rotation mark in the direction, and a hydraulic cylinder and post 'a?' are used to slide the post on this base. A rotation motor is provided to rotate this post. The guide arms of J are installed separately from each other around the post, and the guide arms are provided with gripping claws for gripping the screw cylinder and a hydraulic cylinder for moving the gripping pins, and one gripper is installed. Using a claw, remove the screw Schilling from the injection molding machine body, and use the other gripping claw to injection mold this screw cylinder and another screw cylinder f8. The installation on the X-mount is determined as follows, and can be done by operating the sliding hydraulic cylinder, rotating motor, and gripping claws, which intersect the screw and cylinder.
It is easier to operate than the conventional lifting tool, so it does not require much effort and time to replace the screw cylinder. 2. Use a different type or color of plastic material. When performing injection molding, by replacing the screw and cylinder according to the plastic material, it is possible to eliminate the conventionally required free shot.This results in wasted plastic material and the associated free shot. There is no wastage of time.Furthermore, since the screw cylinder removed from the injection molding carving body is gripped by the gripping hand, in this situation, the uninvented device can be placed on the workbench and the screw cylinder removed immediately. Maintenance can be started, and the rate of maintenance work can be improved.

[Brief explanation of the drawing]

Is the drawing an implementation of this invention? Figure 1 is a top view, Figure 2 is a side view, Figure 3 is a perspective view of the screw cylinder, Figure 4 is a plan view, and Figure 5 is a broken section. Fig. 6 is a front view partially cut away, Fig. 7 is a cutaway plan view of the strip mechanism, and Fig. 8f is a side sectional view of the mechanical grip mechanism. ]... Injection molding machine body, 2... Injection table, 5... First screw cylinder, 8... Base, ]1... Post, 12... Rotating motor, 13...・Guide arm, 1
4... Gripping hand, 17... Gripping claw, 18... Hydraulic cylinder, 21... Second screw cylinder. Applicant Niigata Iron Works Co., Ltd. Figure 1 Cause 2 Figure 3

Claims (1)

[Claims] A base is installed adjacent to the injection molding machine main body from which the screw cylinder is removably provided on the injection table, and the injection molding machine main body is mounted on the base in the same direction, especially in the right angle direction. a post installed vertically so as to be able to slide freely and freely turn in the circumferential direction; a pair of tea-shaped arms attached to the post by turning each other clockwise around the post; and a pair of arms installed on the base; The hydraulic cylinder that rotates Y, the rotation motor that rotates the post, and the screw cylinder?
A hand with 7 gripping claws is slidably attached to the above-mentioned guide arm, and a hydraulic cylinder that moves this gripping arm along the inner arm is used as an object. Screw and cylinder replacement device for injection molding machines.