JPH03153316A - Taking-out device for molded product - Google Patents

Abstract

PURPOSE:To make identification of a defective product easy by preventing generation of trouble ascribable to frictional electricity, by a method wherein a molded product is introduced into a recovery chamber from a taking-out head by passing through a transport pipe, destaticized by a destaticizer and then held into a holding vessel arranged at the lower part of a recovery chamber. CONSTITUTION:A molded product held in one side mold of a resin molding machine is introduced into a recovery chamber by passing through a transport pipe 40 through a taking-out head 30 by receiving suction force with a decompression device 60. Frictional electricity is eliminated with corona discharge which is caused by destaticizing device 90, in the introduced molded product. On the one hand, when it is detected by an optical sensor 45 that the molded product is introduced within a recovery chamber 50 through the transport pipe 40, suction force is made not workable by suspending an action of the decompressing device 60 and an opening and closing lid 70 at the lower part of the recovery chamber 50 becomes an open state with its own weight. The molded product introduced into the recovery chamber 50 is dropped smooth within the recovery chamber 50, discharged through the open state opening and closing lid 70 and held within a lower holding vessel 80. Since the holding vessel 80 is separated from and independent of the recovery chamber 50, it is possible to handle freely the held molded product.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention is connected to a resin molding machine, and after the molding process is finished,
The present invention relates to a molded product take-out device for taking out a molded product held in one mold of the resin molding machine.

[Conventional technology]

FIG. 2 shows a typical example of an injection molding machine for manufacturing resin molded products, where 10 is the resin molding machine body, 11 is an injection unit, 12 is a mold clamping unit, and the injection unit 11 is a hopper. 13, a kneading screw 14 and an injection nozzle 15, and the mold clamping unit 12 includes a fixed mold 17 provided on a fixed platen 16, and a fixed mold 17 provided on a fixed platen 16.
6 and a movable mold 19 provided on a movable platen 18 that is movable in directions toward and away from the mold. 20 is a tie bar for guiding the movable platen 18, and 21 is an oil cylinder for moving the movable platen 18.

In such an injection molding machine, with the movable mold 19 in close contact with the fixed mold 17, molten resin is injected from the injection nozzle 15 into the molding space formed by both molds, and is cooled and solidified to produce a molded product. be done.

After one molding process is completed in this way, the movable mold 19 is opened and moved in a direction away from the fixed mold 17, and in this opened state (FIG. 2 shows this state). The molded product, which is normally held attached to the movable mold 19, is taken out by the molded product take-out device.

However, the present inventor has previously proposed a molded product take-out device applied to such an injection molding machine, which includes a take-out head, a storage container consisting of an outer box and an inner box, a transport pipe, and a pressure reducing means. (Patent application 1986-1200)
No. 55).

[Problem to be solved by the invention]

However, subsequent research revealed a new problem with the above-mentioned molded product removal device. That is, while the molded product is being transported to the storage container, the molded product is charged with friction, and this frictional electricity causes the molded product to adhere to the inner wall of the storage container.

In addition, since molded products are collected all at once in storage containers, it becomes complicated to sort out initially defective products, and it is difficult to inspect molded products at appropriate times. Occurred. The present invention has been made based on the above circumstances, and a first object of the present invention is to prevent troubles caused by frictional electricity of molded products in a molded product take-out device. A second object of the present invention is to facilitate the initial classification of defective products and to facilitate inspection of the quality of molded products at appropriate times.

[Means to solve the problem]

In order to achieve the above object, the molded product take-out device according to the present invention is connected to a resin molding machine, and after the molding process is finished, takes out the molded product held in one mold of the resin molding machine. A molded product removal device for
A take-out head for taking out the molded product from the mold; a transport pipe for transporting the molded product taken out by the take-out head; a collection chamber for the molded product connected to the outlet of the transport pipe; A configuration is adopted that includes a pressure reducing means that applies a suction force to the product, and a static eliminating means that neutralizes the static electricity from the molded product introduced into the recovery chamber.

In addition, an optical sensor is installed to detect when a molded product is introduced into the collection chamber from the transport pipe and stop the operation of the decompression means, and a light sensor is installed in the collection chamber at a position where the molded product discharged from the exit of the transport pipe falls. an opening/closing lid which is closed by the suction force when the pressure reducing means starts operating and is opened by its own weight when the pressure reducing means stops operating; and an opening/closing lid located outside the recovery chamber. Adopts a configuration in which a storage container for molded products is placed below the container.

[Effect]

The molded product held in one mold of the resin molding machine is
Under the suction force of the depressurizing means, the material is introduced from the take-out head through the transport pipe into the collection chamber, and is neutralized by the static eliminator in the collection chamber. Therefore, there is no possibility that the molded product will adhere to the inner wall of the collection chamber.

In addition, when the optical sensor detects that the molded product has been introduced into the collection chamber, the decompression means stops operating and the suction force stops working, and the lower lid of the collection chamber opens due to its own weight, causing the inside of the collection chamber to open. The introduced molded product falls within the recovery chamber, is discharged from the open/closed lid, and is stored in a storage container disposed below the recovery chamber.

〔Example〕

The present invention will be explained in detail below.

In the embodiment shown in FIG. 1, 30 is a take-out head, 40 is a transport pipe, 50 is a recovery chamber, 60 is a pressure reducing means, 70 is an opening/closing lid, 80 is a storage container, and 90 is a static elimination means.

The take-out head 30 is for taking out the molded product from the mold, and is used when the movable mold 19 is moved away from the fixed mold 17 in the resin molding machine shown in FIG. 2, for example. It is held and provided by a take-out head drive mechanism (not shown) that is driven in conjunction with the take-out head drive mechanism. This take-out head drive mechanism moves the take-out head 30 in a direction approaching the movable mold 19 in an open state.

Therefore, the take-out head 30 is moved so that its front surface 31 is in contact with or very close to the mold surface of the movable mold 19.

A take-out hole 32 is formed in the front surface 31 of the take-out head 30 and opens at a position corresponding to a molding cavity (not shown) of the movable mold 19.

The illustrated example is an example in which the movable mold 19 has one molding cavity. The number of takeout holes 32 is actually selected in accordance with the molding cavity of the movable mold 19. The extraction hole 32 is airtightly communicated with the transport pipe 40 via a through hole 33 formed in the extraction head 30.

The transport pipe 40 transports the molded product taken out by the take-out head 30 to the collection chamber 50 by the suction force of the decompression means 60. In the transport pipe 40, 43 is a main pipe part, and 44 is a connection part with the recovery chamber 50. Main pipe part 43
is made of, for example, flexible rubber so that it can easily follow the movement of the take-out head 30.

The connecting portion 44 is made of a transparent material such as acrylic resin, for example.

The recovery chamber 50 is connected to the outlet 41 of the transport pipe 40. A collision plate 51 is provided in a tilted position in a portion of the collection chamber 50 facing the outlet 41 of the transport pipe 40 to prevent the molded product from moving backward into the transport pipe 40 and to facilitate its downward fall. I have to. The collision plate 51 is constructed by providing a flexible material such as rubber or felt on the upper surface of the substrate.

The optical sensor 45 detects whether the molded product is being transported from the transport pipe 40 to the collection chamber 5.
The operation of the pressure reducing means 60 is stopped upon detecting that the pressure has been introduced into the zero range. This optical sensor 45 is arranged around the transparent connection part 44. At a position facing the optical sensor 45 with the connecting part 44 in between, there is a reflecting plate 4 for returning the light that has passed through the connecting part 44 to the optical sensor 45.
6 is provided.

The pressure reducing means 60 reduces the pressure inside the recovery chamber 50 and applies suction force to the molded product. This pressure reducing means 60 is provided adjacent to the recovery chamber 50. 61 is a decompression chamber, 6
2 is an opening, and 63 is a mesh.

The static eliminating means 90 is for eliminating static from the molded product introduced into the recovery chamber 50 and is provided in the upper part of the recovery chamber 50. 91.92 is a static elimination bar, and the static elimination bar 91
．． The tip of each bar 92 is exposed in the recovery chamber 50, and a corona discharge is generated in the recovery chamber 50 by the neutralization bar 91,92.

The opening/closing lid 70 is provided in the recovery chamber 50 at a position where the molded product discharged from the transport pipe 40 falls, and is brought into a closed state by the suction force when the pressure reducing means 60 starts operating. 60 is brought into an open state by its own weight when it stops operating. The opening/closing shaft of the opening/closing lid 70 extends horizontally and is provided on the side wall of the recovery chamber 50. The tilting angle of the recovery chamber 50 is adjustable, and by appropriately selecting this tilting angle, the opening/closing force of the opening/closing lid 70 can be adjusted. Therefore, the opening/closing lid 70 can be opened and closed without using any special drive means for opening and closing.

The storage container 80 is located outside the recovery chamber 50 and has an opening/closing lid 70.
It is located below the . The storage container 80 is separate and independent from the collection chamber 50, and the molded product discharged from the open/close lid 70 in the open state is stored in the storage container 80.

According to the above embodiment, the molded product held in one of the molds of the resin molding machine is passed through the transport pipe 40 from the take-out head 30 into the recovery chamber 50 under the suction force of the decompression means 60. will be introduced in

Frictional electricity is removed from the molded product introduced into the recovery chamber 50 by corona discharge generated by the static eliminating means 90 . Therefore, the molded product is prevented from adhering to the inner wall of the collection chamber 50 due to frictional electricity.

On the other hand, when the optical sensor 45 detects that the molded product has been introduced into the collection chamber 50 from the transport pipe 40, the operation of the pressure reducing means 60 is stopped and the suction force is no longer applied.
The lower opening/closing lid 70 of 0 is opened by its own weight.

The molded product introduced into the collection chamber 50 falls smoothly within the collection chamber 50 and is discharged from the open/close lid 70 in the open state.
It is stored in the lower storage container 80.

Since the storage container 80 is separate and independent from the collection chamber 50, it is possible to freely handle the molded products stored in the storage container 80 at an appropriate time. For example, only initial defective products can be easily classified, and molded products can be extracted at an appropriate time and their quality can be easily inspected.

Although one embodiment of the present invention has been described above, the embodiment of the present invention is not limited to the above embodiment.

For example, if there are multiple molding cavities of a movable mold, a corresponding number of molded product take-out holes and through holes are formed, and a corresponding number of transport pipes, recovery chambers, and storage containers are separately provided. You can do it like this. In this case, one pressure reducing means can be used in common by using a manifold or the like.

Additionally, if the molded product is defective, a signal from the resin molding machine will stop the operation of the optical sensor, and even if the defective molded product passes through the connection of the transport pipe, the decompression means will stop operating. By adopting a configuration in which the opening/closing lid is kept closed, defective molded products can be stopped in the collection chamber, and as a result, defective molded products can be easily separated.

〔Effect of the invention〕

Claim! According to the invention, since the frictional electricity of the molded product introduced into the recovery chamber is removed by the static eliminating means, it is possible to prevent the molded product from adhering to the inner wall of the recovery chamber.

According to the invention of claim 2, it is possible to prevent the molded products from adhering to the inner wall of the collection chamber, and since the storage container is separate and independent from the collection chamber, the molded products stored in the storage container can be prevented from adhering to the inner wall of the collection chamber. It becomes possible to handle products freely, it becomes easy to classify defective products in the initial stage, and it becomes easy to inspect the quality of molded products at an appropriate time. Further, since the opening/closing lid is opened and closed by the suction force of the depressurizing means for suctioning the molded product and its own weight, no special driving means for opening and closing is required, and the structure is simple.

[Brief explanation of the drawing]

FIG. 1 is a schematic sectional view showing an embodiment of a molded product take-out device according to the present invention, and FIG. 2 is an explanatory view schematically showing an example of a resin molding machine. 10... Resin molding machine main body 11... Injection unit y)
13... Hopper 14... Kneading screw 15... Injection nozzle 16... Fixed platen 17... Fixed mold 18... Movable platen 19... Movable mold 20... Tie bar 2
1...Oil cylinder 30...Take-out head 3
1... Take-out spatula 32... Take-out hole 40... Transport pipe 43... Main pipe section 45... Optical sensor 50... Collection chamber 60... Pressure reduction means 62... Opening a 0.・Opening/closing lid 90 ・Front surface 33 of static eliminating means ・Through hole 41 ・Outlet 44 ・Connection part 46 ・Reflector plate 51 ・Balance plate 61 ・Decompression chamber 63 ・...Mesh 80...Storage container 91...Static elimination bar

Claims (2)

[Claims] (1) A molded product take-out device connected to a resin molding machine for taking out the molded product held in one mold of the resin molding machine after the molding process is finished, the device taking out the molded product from the mold. Take-out head (30
), a transport pipe (40) for transporting the molded product taken out by the take-out head (30), a molded product collection chamber (50) connected to the outlet (41) of this transport pipe (40), and this collection chamber. (50) A depressurizing means (60) for reducing the pressure inside the chamber to apply suction force to the molded product, and a static eliminating means (90) for neutralizing the static from the molded product introduced into the recovery chamber (50). Characteristic molded product removal device. (2) The apparatus according to claim 1, further comprising an optical sensor (45) that detects that the molded product is introduced from the transport pipe (40) into the collection chamber (50) and stops the operation of the pressure reducing means (60). ), and in the collection chamber (50), the outlet (41) of the transport pipe (40)
) is placed at a position where the molded product discharged from the molded product falls.When the pressure reducing means (60) starts operating, it is closed by its suction force, and when the pressure reducing means (60) stops operating, its own weight is removed. It is characterized by the addition of an opening/closing lid (70) that can be opened by the user, and a storage container (80) for molded products located outside the collection chamber (50) and below the opening/closing lid (70). A device for taking out molded products.