JPH08229767A - Molding clamping device for metal die - Google Patents

Abstract

PURPOSE: To prevent tilting of a molding before it is clamped, by mounting a molding clamping member openably/closably in a body of equipment vertically moved toward the molding in a metal die, and mounting a molding pressing member, closing the clamping member to press the molding before it is clamped, in the center of the clamping member. CONSTITUTION: Before an ejector pin is actuated with a metal die device opened, a clamping device is positioned in an upper part of a molding in a condition of opening chuck pawls 2, 3 spread. Next, when the clamping device is lowered down, a sucker pad 15 is brought into contact with an upper surface part of the molding. Here is started sucking action of the sucker pad 15, also to actuate the ejector pin so as to press up the molding. Here in a condition that the sucker pad 15 is pressed toward the molding and the ejector pin by elastic spring members 11, 12, further in a condition of sucking, the ejector pin is lifted. By these actions, the molding is stabilized. In a position where the ejector pin is fully lifted, the chuck pawls 2, 3 are closed to clamp the molding conveyed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gripping device for gripping a molded product in a mold, and particularly to a mold for temporarily pushing up an embedded molded product and gripping the pushed molded product. Related to the molded product gripping device.

[0002]

2. Description of the Related Art As an example, a gripping device for gripping a molded product molded by injection molding or the like to take it out of a mold and convey it to a predetermined position will be described with reference to FIGS. Reference numeral 101 denotes a mold device used for injection molding or the like, which is configured to be openable / closable by a fixed side mold plate 102 and a movable side mold plate 103. A cavity 105 in which a molded product 104 is molded is formed in the movable mold plate 103. Further, an ejector pin 106 for pushing the molded product 104 out of the cavity 105 is arranged on the movable side mold plate 103, and the ejector pin 106 can be operated in conjunction with the opening / closing operation of the mold device 101. It has become. On the other hand, in the vicinity of the mold device 101, the molded product 1 extruded from the cavity 105.
Molded product gripping device 1 that grips 04 and conveys it to a predetermined location
07 are arranged. Below the molded product gripping device 107, openable and closable chuck claws 108 and 109 driven by compressed air or the like are attached.

Next, the operation will be described. After the molding is completed, when the mold device 101 is expanded, the ejector pin 106 operates in conjunction with the expansion operation to push up the molded product 104 from the cavity 105. Here, the molded product 1 with the gripping device 107 attached to the tip of the robot arm or the like having the chuck claws 108 and 109 expanded.
Move to position 04. When the movement is completed, the chuck claws 108 and 109 are closed to hold the molded product 104. Next, the gripping device 107 is moved to convey the molded product 104 to a predetermined position.

[0004]

However, in the above-mentioned conventional technique, since the molded product 104 is pushed up by the ejector pin 106 which is smaller than the molded product 104, the molded product 104 comes out of the cavity 105. In some cases, it tilted as shown in FIG.
This is because the vibration of the molding machine and the like acts on the instability.
When the molded product 104 is tilted in this way, the gripping device 10
It is impossible to grip the molded product 104 in step 7, and it is necessary to stop the molding machine and manually remove the molded product 104. It is conceivable to increase the number of ejector pins or to make the ejector pins thicker in order to prevent the molded product 104 from tilting, but the structure of the mold device becomes complicated, and It is not realistic because it becomes large due to its complexity.

[0005]

SUMMARY OF THE INVENTION The present invention is intended to solve the above problems, and a molded product is embedded in a mold, and the molded product is held upward by pushing the molded product upward with an ejector pin. In the mold product gripping device of the mold, the mold product gripping member is openably and closably attached to the housing that moves up and down toward the mold product in the mold, and the gripping member is closed at the center of the gripping member to perform molding. A molded product pressing member for pressing the molded product before gripping the product is attached.

[0006]

EXAMPLE An example will be described with reference to FIGS. Chuck claws 2 and 3 are attached to the lower part of the housing 1 at positions facing each other so as to be openable and closable. The chuck claws 2 and 3 use compressed air as a drive source, and are opened and closed by the pressure of the compressed air as in the prior art.

A pressing member 4 for pressing the work is attached to the central portions of the chuck claws 2 and 3. More specifically, a plate 5 is fixed to the central portion of the housing 1, and the guide shafts 6, 7 extend vertically from the plate 5.
Has been fixed. In addition, a movable plate 10 is mounted on the guide shafts 6 and 7 through slidable ball bushes 8 and 9.
Is movably mounted. The movable plate 10 is constantly urged downward by elastic members 11 and 12 such as coil springs stretched between the movable plate 10 and the plate 5. Reference numerals 13 and 14 denote guide bushes that prevent the ball bushes 8 and 9 and the moving plate 10 from protruding from the guide shafts 6 and 7.

A suction pad 15 made of a rubber-like elastic material is attached to the lower end surface of the moving plate 10 so as to hold the pressed product without damaging it. A tube 16 is attached to the suction pad 15, and suction is performed through the tube 16. As shown in FIG. 3, when the circular shaped product 17 is gripped, the suction pad 15 may be changed to a V-shaped elastic pressing member 18 in conformity with the shape of the shaped product.

Next, the operation will be described. The operation of taking out a molded product molded by the mold device as in the prior art will be described. Before the mold device is opened and the ejector pin is operated, the gripping device is positioned above the molded product in a state where the chuck claws 2 and 3 are expanded. Next, when the gripping device is lowered, the suction pad 15 is brought into contact with the upper surface portion of the molded product. Here, the suction action of the suction pad 15 is started and the ejector pin is operated to push up the molded product. At this time, the suction pad 15 is
It rises in a state of being pressed toward the ejector pin of the molded article by 12 and in a state of being adsorbed. Due to these effects, the molded product is stable. When the ejector pin is fully raised, the chuck claws 2 and 3 are closed and the molded product is gripped and conveyed to a predetermined location.

[0010]

According to the present invention, a molded product is embedded in a mold,
In a mold product gripping device for a mold, wherein the mold product is pushed upward by an ejector pin to grip the mold product,
A molded product gripping member is attached to the housing that moves up and down toward the molded product in the mold so that it can be opened and closed, and the gripping member closes at the center of the gripping member and presses the molded product before gripping the molded product. Since the member is attached, the inclination of the molded product before gripping the molded product can be prevented as much as possible, so that the molded product can be stably gripped.

[Brief description of drawings]

FIG. 1 is a front view of an embodiment of the present invention.

FIG. 2 is a right side view of FIG.

FIG. 3 is a front view of another embodiment of the vacuum pad.

FIG. 4 is a partially cut front view of a conventional mold device when opened.

FIG. 5 is a front view when a molded product is properly gripped by a conventional molded product gripping device.

6 is a front view when the molded product of FIG. 4 is pushed up by an ejector pin and inclined.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Housing 2,3 Chuck claw 4 Pressing member 5 Plate 6,7 Guide shaft 8,9 Ball bush 10 Moving plate 11,12 Repellent member 13,14 Guide bush 15 Adsorption pad 16 Tube 17 Circular molded product 18 Pressing Element

Claims (1)

[Claims] 1. A molded product gripping device for a mold, wherein a molded product is embedded in a mold and the ejector pin pushes the molded product upward to grip the molded product. A molded product gripping member is attached to the housing that moves up and down toward the molded product so as to be openable and closable, and a molded product pressing member that presses the molded product before the gripping member closes and grips the molded product is installed. Device for holding mold products.