JPH0999457A - Injection molding taking-out machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an injection molding taking-out machine automating the setting of a skin and conserving the moving range of a feed mechanism. SOLUTION: An injection molding taking-out machine is equipped with a product grasping device 10 constituted by attaching a plurality of grasping pawls 11 grasping an injection molding to a base part 10a having a size corresponding to that of the injection molding, a skin suction device 20 constituted by attaching a plurality of skin suction pads 21 having exhaust pumps attached thereto to the base part 20a having a size corresponding to that of the skin and a feed mechanism lifting and lowering the lower end part of a vertical support rod 9 for supporting the product grasping device 10 and the skin sucking device 20 between the intermediate position between molds and the upper position of a mold clamping machine and further horizontally moving the same to a mold and a product feed-out position. The lower end part of base parts 10a, 20a wherein the product grasping device 10 and the skin sucking device 20 mutually become back to back in a vertical state are pivotaly provided on the lower end part of the support rold and an actuator revolving these base parts from a vertical state to mutually separate horizontal states is provided.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is completed by setting a skin on one mold and coating the skin on an injection-molded product molded on the other mold by closing the mold clamping machine. The present invention relates to an injection molded product takeout machine for taking out a molded product.

[0002]

2. Description of the Related Art FIG. 4 illustrates a conventional unloader of this type. The die 6 is attached to the die clamping machine portion 7 on one side of the die clamping machine, and the die 6a is attached to the other die clamping machine portion 7a so that they can be opened and closed while facing each other. A product gripping tool 10 configured such that a plurality of base ends of L-shaped gripping claws 11 are mounted on the rotating shaft 9b of the housing 9a at the lower end of the support rod 9 of the transport mechanism so as to be opened and closed by the base 10a.
Has been fixed. The product gripping tool 1 is provided on the housing 9a.
A motor for driving 0 to rotate between a horizontal position and a vertical position is built in. Further, on the upper side of the support rod 9, there is attached a skin adsorption tool 20, which is configured by attaching a plurality of suction cups 21 to which exhaust pumps are attached to the base in order to manually adsorb the epidermis 3. An air cylinder that opens and closes the grip claw 11 to open and close positions is attached to the base portion 10a (see FIG. 1).

In a state where the injection-molded product 4 completed by covering the outer skin 3 on the injection-molded product 4 is bitten into the periphery by gripping the gripping claws 11 and gripped (A in the figure), the support rod 9 is retracted. And move up. Then, the product is moved to the product unloading position of the belt conveyor 1, and the product gripping tool 10 is rotated to the horizontal position to open the grip claws 11 and release the injection-molded product 5 (FIG. 8B). At that time, the epidermis 3 by hand
Is adsorbed on the skin adsorbing tool 20, is conveyed to the position facing the mold 6a, and is further approached to release the suction of the exhaust pump to set the skin 3 on the mold 6a (FIG. 6C).

[0004]

That is, it requires manpower for the epidermis set, the product gripping tool 10 and the epidermis suction tool 2
Since the height of the mounting position on the support rod 9 of 0 is different,
The amount of movement of the transfer mechanism is correspondingly large, the cycle time is long, and the structure is bulky.

In view of the above points, the present invention has an object to provide a take-out machine for an injection-molded product of the kind described at the beginning which is capable of automating the skin set and saving the moving range of the transport mechanism. .

[0006]

In order to achieve this object, the present invention molds an injection-molded article by means of molds mounted on both sides of a mold clamping machine and opened and closed at positions opposed to each other. After molding, set the skin on one of the molds once the mold clamping machine is open, and close the mold clamping machine to cover the skin with the injection molded product of the other mold and take out the completed injection molded product. For injection machine removal machine for
A product gripper consisting of a plurality of gripping claws for gripping injection-molded products on the base of injection-molded products, and a suction-adhesive suction pad with exhaust pump attached to the base of the size corresponding to the skin. And a lower end portion of a vertical support rod for supporting the product gripping tool and the skin suction tool at an intermediate position between the molds and an upper position of the mold clamping machine. It is equipped with a transport mechanism that moves it up and down and moves it horizontally to the mold and product unloading position.The lower end of the support rod is the lower end of the base that is back-to-back in a state where the product gripper and the skin adsorption tool are perpendicular to each other. And an actuator that pivots the bases from the vertical state to the horizontal state in which they are separated from each other.

The product gripping tool grips the injection-molded product in the vertical state, is moved to the product unloading position, and is rotated horizontally together with the skin suction tool. In this state, the product gripper releases the injection-molded product to carry it out, and the skin adsorption device adsorbs the adjacent skin. The setting of the skin to the suction position can be performed sequentially from the side by a belt conveyor, or the skin placing table can be gradually raised by open loop control. According to claim 2, in response to the detection signal of the distance measuring means for measuring the height position of the epidermis stacked on the epidermis placement table,
By placing the skin stacking device, which controls the set height of the epidermis by the closed loop control, at a position adjacent to the product unloading position, it is possible to constantly set with high accuracy.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION An ejector for an injection molded product according to an embodiment of the present invention will be described with reference to FIGS. 1 and 2. The same or equivalent portions as those described in FIG. 4 will be described with the same reference numerals. The product gripper 10 is the injection molded product 5 as described above.
The base ends of the four L-shaped gripping claws 11 that grip the periphery of
The air cylinders 12 pivotally attached to the four corners of the base portion 10a having a size corresponding to the injection-molded product 5 and pivoted between the grip claw 11 and the base portion 10a respectively, peel the periphery of the injection-molded product 5 from the mold 6. The holding claw 11 is opened and closed between a closed position where the product is taken out of the belt conveyor 1 and an open position where the injection-molded product 5 is released at the product carry-out position of the belt conveyor 1. As described above, the skin adsorption device 20 is configured by attaching suction cups 21 that are made negative pressure by a built-in exhaust pump at six places around the base 20a having a size corresponding to the skin 3.

The lower ends of both of these bases 10a and 20a are pivotally attached to the lower end of the support rod 9 so as to be rotatable from a vertical state in which they are back-to-back along the support rod 9 to a horizontal state in which they are separated from each other. It That is, the bearings 26a and 27a at the lower ends of the bases 10a and 20a are rotatably supported by the support shafts 26 and 27, and the rods 13a of the air cylinder 13 attached to the lower ends of the support rods 9 in a back-to-back relationship. A link 14 is pivotally attached between the tip and the base 10a, 20a,
An actuator for rotating the bases 10a and 20a from a vertical state to a horizontal state is configured.

As shown in FIG. 2, the transport mechanism guides the support rod 9 to the vertical guide pipe 15 so as to be able to move up and down, and guides the projections on both sides of the guide pipe 15 to the square rails 16. Allows the mold clamping machines 7 and 7a to move horizontally in the opening / closing direction.
By guiding 6 to the rail 17 in the orthogonal direction,
The upper parts of the mold clamping machines 7 and 7a are moved toward the belt conveyor 1. The drive devices for the support rod 9 and the guide pipe 15 are not shown.

A skin stocking device 30 for stacking the skins 3 is arranged at a position adjacent to the starting end of the belt conveyor 1 which is a product unloading position. This device is
The rail 17 is provided so as not to interfere when the epidermis suction tool 20 rotates.
Attached to the lower surface of the skin 3 via the arm 32a, a laser range finder 32 for measuring the distance to the lower skin 3, a skin mounting table 33 with a suction cup 33a for stacking the skin 3, and a mounting table for the tip of the cylinder rod 31a. In response to the detection signal of the cylinder 31 which is fixed to the section and is moved up and down, and the laser range finder 32, the distance is a predetermined constant value, that is, the height position of the uppermost skin 3 is within a predetermined height range Cylinder control means 34 (see FIG.
C) and.

The operation of the unloader thus constructed is shown in FIG.
This will be described with reference to FIG. Injection molding is performed with the mold clamping machines 7 and 7a closed, and the injection-molded product 4 is injection-molded and opened in the mold 6. In this state, as shown in FIG. 3A, the product gripping tool 10 back-to-back and the skin adsorbing tool 20 that adsorbs the skin 3 descend between the molds 6 and 6a, and further the rail 1
6 moves horizontally to the mold 6a to set the skin 3, and the negative pressure is released to release the suction cup 21 from the skin 3, and the suction cup 21 is once retracted and then raised. In this state, the skin 3 is covered with the injection-molded product 4 of the mold 6 by the movement of the mold clamping unit 7a to complete the injection-molded product 5.

Next, as shown in FIG. 3B, back-to-back product gripping tool 1 is again opened with mold clamping machines 7 and 7a opened.
0 and the skin adsorption tool 20 are moved down and moved to the mold 6,
The injection-molded product 5 is gripped by closing the grip claws 11, once retracted and then raised, and moved to the product unloading position along the rail 17. Subsequently, as shown in FIG. 3C, the product gripping tool 10 and the skin suction tool 20 are rotated to a horizontal position, and the gripping claws 11 are opened to release the injection molded product 5 to the starting end portion of the belt conveyor 1 and carry it out. Let further,
The epidermis suction tool 20 adsorbs the epidermis 3 and conveys it to the position of FIG. 3A. During this period, the next injection-molded product 4 is molded.

While the above steps are repeated, the laser range finder 32 measures the distance between the uppermost skins 3 stacked on the skin placing table 33 without the skin suction tool 20 interposed therebetween, and a predetermined height is measured. When the height is lowered from the position to the height at which suction is not possible, the cylinder control means 34 is driven to raise the cylinder rod 31a. As a result, although the support rod 9 is limited in the descending position due to the presence of the belt conveyor 1, the epidermis suction tool 20 surely adsorbs the epidermis 3 that is gradually consumed.

[0015]

According to the first aspect of the present invention, by supporting an epidermis suction tool for automatically setting epidermis on a support rod in a back-to-back state with a product gripping tool, it is possible to reduce the movement stroke of the transport mechanism, and thereby the operation cycle. Can be shortened. Also,
Since the skin is also adsorbed at the product unloading position, the operation cycle can be further shortened, which is advantageous in terms of the area occupied by the unloader.

According to the second aspect of the present invention, an epidermis adsorbing device for controlling the uppermost height of the gradually consumed epidermis to be constant is realized by saving the occupied area.

[Brief description of drawings]

FIG. 1 is a side view of an essential part of an injection molding product takeout machine according to the present invention.

FIG. 2 is a perspective view of the relevant part.

FIG. 3 is a side view explaining the operation of the unloader.

FIG. 4 is a side view for explaining the operation of the conventional unloader.

[Explanation of symbols]

 3 Skin 4 Injection-molded product 5 Injection-molded product 9 Support rod 10 Product gripping tool 10a, 20a Base 11 Grasping claw 20 Skin-sucking tool 21 Sucker 33 Skin-seat mounting table

Claims (2)

[Claims] 1. An injection-molded product is molded by a mold attached to both sides of a mold clamping machine and opened and closed at positions facing each other, and one mold is formed with the mold clamping machine once opened after the injection molding. An injection molding product take-out machine for taking out an injection-molded product completed by setting the skin and covering the skin with the injection-molded product of the other mold by closing the mold clamping machine. A product gripper that is configured by attaching multiple gripping claws that hold injection-molded products to a base of a size, and a plurality of skin suction suction cups with an exhaust pump attached to the base of a size corresponding to the skin. The configured skin suction tool, and the lower end of the vertical support rod for supporting the product gripping tool and the skin suction tool is moved up and down between the intermediate position between the molds and the upper position of the mold clamping machine, and Horizontal dies and product unloading And a transport mechanism for moving the support rod to a stationary position, and the lower end of the support rod is pivotally attached to the lower end of the base that is back-to-back in a vertical state with respect to each other, and An ejector for an injection-molded product, comprising an actuator for rotating the base from a vertical state to a horizontal state in which the base is separated from each other. 2. A skin stacking device is arranged at a skin stacking position adjacent to a product unloading position, and this skin stacking device fixes a horizontal skin mounting table to the tip end of a cylinder rod. A cylinder for raising and lowering, a distance measuring means for measuring the height position of the skin stacked on the skin placing table, and a height position of the skin being made constant in response to a detection signal of the distance measuring means. 2. The take-out machine for an injection-molded product according to claim 1, further comprising a cylinder control means for driving and controlling the cylinder.