JPH0239343B2 - SEIKEIHINTORIDASHIICHINOJIDOSETSUTEIHOHO - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The industrial application field of the present invention is a field related to an automatic setting method of a molded product take-out position of a molded product take-out device used in a die-casting machine, an injection molding machine, etc. It is.

[Prior art] Die-casting machines, injection molding equipment, etc. are equipped with a molded product ejection device that enters between a fixed mold and a movable mold immediately after the mold is opened, and ejects the high-temperature molded product from the mold. are doing.

This device is activated immediately after the mold is opened, approaches the molded product attached to the movable mold side, and solidifies part of the molded product, for example, the molten metal that exists between the runner called a biscuit and the mold entrance. The part is received by a chuck device and taken out from the mold.

The molded product removal operation of the device is automated.

[Problems to be Solved by the Invention] In order to set the automated take-out position of molded products, it is necessary to position the arm and chuck mechanism of the take-out device based on data obtained by actually measuring the mold and other parts. The ejecting device is automatically set by a limit switch that has been set, or by an arithmetic device based on data such as the thickness of the mold, the thickness of the biscuit, the position of the branch end, and the mold opening stroke.

However, if such a method is adopted, the installation positions of several limit switches must be changed each time the product is changed, or a complicated calculation device is required, making the work complicated and resulting in high costs. Ta.

[Means for Solving the Problems] In order to solve the above-mentioned problems, the present invention provides a molded product receiving section such as a chuck of the product at the tip of the arm of the molded product take-out device. A sensor is provided to detect the part to be received, such as a biscuit, and the arm is advanced until the sensor is activated, and when the product is detected, the arm stops operating and performs chucking, etc. A method was adopted in which the movement stroke was stored in a storage device and the arm was operated using this movement stroke from the next molded product removal operation.

[Function] If such a method is adopted, there is no need to adjust the position of the limit switch, etc., and there is no need for an arithmetic device that performs complicated logical operations, making it possible to simplify the control circuit.

Furthermore, if the stroke of the first molded product take-out operation is memorized, the arm can be moved with the same stroke from the next time onwards, so the movement speed of the arm before and after receiving the molded product can be accelerated. It is possible to shorten the time required to take out molded products and improve work efficiency.

[Example] Hereinafter, the method of the present invention will be explained in more detail with reference to the drawings.

FIG. 1 and subsequent figures explain the method of the present invention, and FIG. 1 shows a molded product ejecting device.

In Fig. 1, the part indicated by the symbol 1 is a fixed mold;
The one indicated by code 2 is a movable mold, which is usually used for molded product 3.
makes contact with the gripping part, for example, the biscuit 3a,
When this becomes ON, the movement of the arm is stopped and the stroke at this time is stored in the storage control device 10.

The relationship between the moving stroke and the moving speed in this first moving operation is as shown by the solid line A in FIG. 2, and is performed slowly and carefully.

In this way, the first movement is performed,
The chuck device 7 takes out the molded product 3 and transports it to a predetermined position on the side of the mold, completing one cycle of the taking out operation.

The next time the arm 6 is taken out, the arm 6 is moved based on the stored movement stroke, and the relationship between the movement stroke and the speed at this time is as shown by the chain line indicated by the symbol B in FIG.

That is, at the start of movement, the movement of the arm 6 can be performed such that the speed reaches its maximum at an intermediate point in time when the product is gripped.

By increasing the moving speed of the arm 6 midway in this way, the efficiency of the product take-out operation can be significantly improved, and the shocks at the time of starting and stopping can be reduced.

In this example, since the above-mentioned method for setting the take-out position is adopted, the product take-out position can be set without changing the settings of several limit switches or performing complex calculations based on the dimensions of each part. The equipment can be simplified and work efficiency can be greatly improved.

In addition, in the above-mentioned embodiment, an example was shown in which a limit switch was used as a sensor, but it is of course possible to use not only a limit switch but also a non-contact type sensor such as a non-contact relay or a photoelectric type. be. Alternatively, a magnetic scale may be attached to the guide shaft 5, and the movement distance of the guide shaft 5 may be automatically read and controlled by the action of the magnetic scale and the magnetic head.

[Effects] As is clear from the above description, according to the present invention, a sensor for detecting the receiving portion of the molded product is provided in the vicinity of the molded product receiving section such as a chuck device provided on the arm of the product take-out device. The movement of the arm is stopped when the receiving part is detected by this sensor, and the movement stroke at this time is memorized and the movement is performed using this stroke from the next operation. The settings can be made extremely easy, and the control device can be simplified.

Further, once the movement stroke is determined in this way, the arm can be moved at high speed except during the start and chuck operations by automatic setting, and the take-out operation can be performed extremely efficiently.

[Brief explanation of drawings]

The drawings are for explaining the method of the present invention, and FIG. 1 is an explanatory diagram of the product take-out device, and FIG. 2 is a diagram showing the relationship between stroke and speed to explain the operation of the arm. 1... Fixed mold, 2... Movable mold, 3... Molded product, 4... Product removal device, 5... Guide shaft, 6...
Arm, 7...Chuck device, 8...Limit switch.

Claims (1)

[Claims] 1. A sensor is provided that detects the vicinity of the molded product receiving part and the receiving part of the molded product of an arm that is guided between the fixed mold and the movable mold when the mold is opened and receives the molded product by the molded product receiving part. When activated, the arm stops moving toward the molded product, and
A method for automatically setting a molded product take-out position, characterized in that the movement stroke of the arm at this time is memorized, and from the next time on, the molded product is taken out according to the memorized movement stroke.