JPH02274521A - Taking-out device of injection-molded product - Google Patents

Abstract

PURPOSE:To reduce drastically a cycle time, by constituting the title device so that an injection-molded product taken out from a mold with a chuck of a taking-out arm is released once on a pad of a delivery member, a chuck of a release arm is lowered by holding the injection-molded product on the pad of the delivery member and the injection-molded product is released out of a molding machine. CONSTITUTION:Since a chuck 21 of a taking-out arm 2 releases once a work taken out of a mold 51 on a pad 31 of a delivery member 3, the taking-out arm 2 is returned to the original position without performing an up-and-down motion for releasing the work W out of a molding machine. The pad 31 or a release arm 4 of the delivery member 3 is moved by keeping a pace with returning to the original position of the taking-out arm 2 and a chuck 41 of a release arm 4 is lowered by holding the work W of the pad 31 of the delivery member 3 and the work W is released out of the molding machine.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a device for taking out a synthetic resin injection molded product.

[Prior art and its problems]

A special ejecting device is used to eject a synthetic resin injection molded product (hereinafter referred to as a work) from a mold of an injection molding machine. This take-out device has a take-out arm with a chuck attached to its tip.

The chuck enters between the opened molds and takes out the workpiece.There is a horizontal type in which the take-out arm rotates or moves horizontally and the chuck enters between the molds from the side. There is a vertical movement type in which the chuck enters between the molds from above by moving in the direction of the chuck, but in the vertical movement type, the ejecting device is installed on the injection molding machine, so the floor space around the injection molding machine can be used effectively. There are advantages available.

FIG. 3 shows the operation of the conventional vertical movement type chuck 1. After the mold 51 is opened, the chuck 21 is moved (
A) Lowering → (B) Gripping the workpiece → (C) Raising → (D) Traversing → (E) Rotating → (F) Lowering → (G) Release warp → (H
) Execute the process of rising → (1) rotation return → (J) lateral travel return. For this reason, the cycle time for the unloader to complete all operations is inevitably long1, for example, 150 TO
The maximum cycle time of a take-out machine used in an N-class injection molding machine is about 6 seconds. If the cycle time is shortened any further, the operating noise will increase, and the shocks and bumps will increase, shortening the life of the machine. Also, the vibration of the machine will increase, and the reproducibility of the position when the workpiece is released from the chuck will be significantly reduced. Problems such as deterioration may occur. on the other hand,
Due to the demand for improved productivity, injection molding machines are increasingly being cycled up, and it is becoming difficult for take-out machines to keep up with the short cycle times of injection molding machines.

[Purpose of the invention]

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide an injection molded product removal device that can significantly shorten cycle time and contribute to improved productivity.

(Structure and operation of the invention) The injection molded product ejecting device of the present invention has a frame having one end attached above the injection molding machine and extending in the horizontal direction, and a chuck at the tip, and a mold that is opened. A take-out arm that moves up and down between the take-out arms, a release arm that has a chuck at its tip and moves up and down at the other end of the frame, and a delivery member that is disposed between the take-out arms and the release arm and has a pedestal. Equipped with
The injection molded product taken out from the mold by the chuck of the take-out arm is once released onto the pedestal of the delivery member, and either the pedestal or the release arm moves and approaches, and the injection molded product on the pedestal is released. It is characterized in that it is gripped by the chuck of the release arm, lowered, and released outside the molding machine.

In such an injection molded product take-out device, the chuck of the take-out arm temporarily releases the work taken out from the mold onto the pedestal of the transfer member, so the take-out arm does not move up and down to release the work out of the molding machine. Return to original position without doing anything. Then, in parallel with the return of the take-out arm to its original position, the cradle or release arm of the delivery member moves, and the chuck of the release arm grips the wire on the cradle of the delivery member and descends.
Release it outside the molding machine. That is, in the past, one take-out arm carried out the entire stroke, but in the present invention, the pedestal of the transfer member and the release arm share half of the stroke, and execute the work in parallel with the take-out arm. Therefore, the cycle time is reduced by half.

〔Example〕

The present invention will be specifically described below based on embodiments shown in the drawings.

In FIG. 1, one end 1a of a frame 1 is fixed above an injection molding machine 5, and the other end 1b extends laterally. A take-out arm 2 is arranged at one end la side of the frame 1, and a chuck 21 is attached to the tip of the take-out arm 2.

The chuck 21 is rotated by a rotating mechanism (not shown). The take-out arm 2 is driven by an air cylinder 22 and travels laterally along the frame 1 within a range regulated by the stoppers 11 and 12. The chuck 21 is driven by the air cylinder 23 to move up and down, enters the opened mold 51 III, takes out the workpiece, and moves it upward.

Next, a delivery member 3 is suspended from the midsection of the frame 1 so as to be horizontally movable, and a pedestal 31 provided with a chuck (not shown) is provided below the delivery member 3 to protrude horizontally. . The delivery member 3 is driven by an air cylinder 32 and travels laterally along the frame 1 within a range regulated by the opposing stoppers 13 and 14. Here, when the transfer member 3 contacts the stopper 14 and the take-out arm 2 contacts the stopper 11, the chuck 21 and the pedestal 3
1 will face each other at close range.

Note that depending on the shape of the workpiece, a chuck is not required on the pedestal 31, and when the delivery member 3 is traveling horizontally, the pedestal 31
A simple positioning guide may be provided to prevent the workpiece from moving above the molding machine, but in any case, the transfer member 3 is structured so as not to make a large vertical movement with a large stroke to release the workpiece to the outside of the molding machine. It is easy and lightweight, and can be driven horizontally at high speed.

Further, a release arm 4 having a chuck 41 attached to its tip is attached to the other end 1b side of the frame 1, and the chuck 41 is driven by an air cylinder 42 to move up and down. Then, when the delivery member 3 comes into contact with the stopper 13 and the chuck 41 rises, the chuck 41
and the pedestal 31 are arranged to face each other at close range. Note that this chuck 41 does not require a turning mechanism and has a simple and lightweight structure, so it can be moved up and down at high speed like the delivery member 3.

When the mold 51 is opened, the chuck 21 of the take-out arm 2 moves from (A) downward to (B
) Workpiece grip → (C) Raise → (D) Rotation → (E) Traverse movement → (F) Work release → (G) Traverse movement return → (II) Rotation return process is executed, but (F) Workpiece release When
The chuck 21 and the pedestal 31 of the delivery member 3 face each other,
The pedestal 31 executes a process of CI) gripping the workpiece released from the chuck 21 → (, ■) lateral movement → (K) releasing the workpiece → (L) lateral movement return. When (K) the workpiece is released, the chuck 41 of the release arm 4 and the pedestal 31 face each other, and the chuck 41 moves from (M) gripping the workpiece released from the pedestal 31 to (N) descending ( At this time, the delivery member 3
The pedestal 31 can be horizontally moved back and lowered. )→(
One cycle is completed by executing the process of 0) work release → (P) raising.

In this way, the transfer member 3 and the release arm 4, which operate at high speed due to their light weight, share half of the entire stroke, and are executed in parallel with the take-out arm 2, so the chuck 41 of the release arm 4 is When the work W is released outside the molding machine at (0), the chuck 21 of the take-out arm 2 can be kept on standby above the mold 51 in preparation for the next cycle.
Since the cycle time can be significantly shortened, it is possible to keep up with the cycle up of the molding machine with plenty of time.

In addition, in the above embodiment, the chuck 21 of the take-out arm 2
Turn to 4! ! The structure was attached and rotated to release the work onto the horizontal pedestal 31, but after attaching a rotating mechanism to the pedestal 31 or the chuck 41 of the release arm 4 and transferring the work to the vertical pedestal 31. The pedestal 31 may be rotated horizontally, or the chuck 41 may be rotated horizontally after the workpiece is transferred from the pedestal 31 in the vertical position to the chuck 41 in the vertical position.
It is also possible to automatically perform tasks such as simple assembly of workpieces on the horizontal pedestal 31 while the machine is traveling horizontally.

Further, in the above embodiment, an example was shown in which the transfer member 3 moves horizontally and the release arm 4 does not move horizontally, but conversely, the release arm 4 moves horizontally and the transfer member 3 is fixed to the frame 1. In order to avoid horizontal movement, it is also possible that only the delivery member 3 runs horizontally between the extraction arm 2 and the release arm 4 without the extraction arm 2 and the release arm 4 traveling horizontally. , the work taken out from the mold by the take-out arm 2 is once released onto the pedestal 31 of the transfer member 3, and it is only necessary to rub the work once so that the work is released outside the molding machine by the release arm 4. The pedestal 31 is the frame 1
The cradle 31 is attached to the transfer member 3 fixed to the transfer member 3 by a rotating arm, and the cradle 31 rotates to separate the take-out arm 2 and the release arm 4.
6. [Effects of the Invention] As explained above, the injection molded product retrieval device of the present invention has the following features:
The chuck of the take-out arm releases the injection molded product taken out from the mold onto the pedestal of the delivery member, and then the chuck of the release arm grips the injection molded product on the pedestal of the delivery member and descends. Since it is made to be released outside the molding machine, it is possible to significantly shorten the cycle time and provide an injection molded product removal device that greatly contributes to improving productivity.

[Brief explanation of drawings]

FIG. 1 is a front view of the embodiment of the present invention, FIG. 2 is a diagram illustrating the stroke, and FIG. 3 is a diagram illustrating the stroke of the conventional example. 1...Frame 11,12,13.14...Sl
-Brim 2...Take-out arm 3...Delivery member 3
1. ...Case 4...Release arm 21.41...
・Chuck 22.23, 32.42...Air cylinder 51...Mold W...Workpiece 5...Injection molding machine

Claims (1)

[Scope of Claims] A frame having one end attached above the injection molding machine and extending in the horizontal direction, a take-out arm having a chuck at the tip and moving up and down between the opened molds, a release arm having a chuck and moving up and down at the other end of the frame;
A delivery member disposed between the take-out arm and the release arm and having a pedestal is provided, and the injection molded product taken out from the mold by the chuck of the take-out arm is temporarily released onto the pedestal of the delivery member. Either the pedestal or the release arm moves close to each other, and the injection molded product on the pedestal is gripped by the chuck of the release arm, descends, and is released outside the molding machine. A device for taking out injection molded products.