JPS62156922A - Material supply and discharge device of extruding machine - Google Patents

Abstract

PURPOSE:To contrive elimination of labor in exchanging work of an extrusion material, by performing automatically a series of exchanges of the materials such as supply of the remaining material to an extruding machine hopper and discharge of the remaining material from the extruding machine hopper. CONSTITUTION:A vessel 5 of a supply side conveyor 30 is slid by an operation button 51 and thrown into a lifter 20 waiting at the lowest position of a lifter guide rail 22. Then an insulation coating material is thrown into a hopper 12 by a method wherein the vessel is raised up to a predetermined position of the top part 22a and dropped by actuating a driving device 21 for ascent and descent. When throwing-in is completed the empty vessel 5 descends down to the lowest position for suspension and waiting at that position. When extrusion work of an extrusion machine 1 is completed, the material remaining in the hopper 12 drops into the empty vessel 5 waiting at the foregoing predetermined position on the lower part of the hopper 12 from a discharge port 12a through a discharge chute 15 for discharge and collection.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a material supply/discharge device for an extruder used for manufacturing insulated cables, etc.

(Prior art) In order to supply extruded material to the popper of an extruder used in the process of extruding and applying insulation sheathing material to insulated cables, conventionally, an operator manually placed a container filled with the extruded material onto a hopper. The extruded material was fed into the potper by either lifting it into the container and throwing it into the container, or by pneumatic transport. In addition, in order to collect unnecessary leftover materials from the pumper, conventionally, an empty container was manually carried near the discharge port at the bottom of the pumper, the leftover materials were discharged into this container, and then collected. The method used was to manually transport the materials to the remaining materials storage area.

(Problems to be Solved by the Invention) In recent years, the production of electric wires used in electronic devices, etc. has been trending towards a reduction in the number of different products. are increasing. Under such circumstances, there is a limit to the human power required to supply extrusion materials to the extruder and collect residual materials, and automation and labor saving are desired.

In addition, the method of supplying extruded materials to the potper by pneumatic transportation is the optimal method for mass production, but in high-mix, low-volume production where materials are frequently exchanged, pneumatic transportation requires a lot of time to clean the transportation system when changing materials. This method is not preferable because it causes a decrease in the operating rate of the extruder.

The present invention has been made in view of the above circumstances, and aims to automate material change, save labor, and shorten setup time in an extruder that is applied to high-mix, low-volume production, and improves the operating rate of the extruder. The purpose of the present invention is to provide an improved material supply and discharge device for an extruder.

(Means for Solving the Problems) In order to achieve the above-mentioned object, according to the present invention, the extruded material is delivered by a container to a hopper having an openable and closable discharge port for discharging the residual material to the outside of the extruder. Directly throw in and supply
In the material supply/discharge device that opens the discharge port and collects the discharged residual material into the container, the container filled with the extruded material is placed at a first predetermined value □ position below the hopper and is transferred to the top of the popper. is lifted to a second predetermined position, and the container is overturned to throw the extruded material into the hopper, while the empty container is returned to the first predetermined position to wait, and the remaining material is discharged from the outlet. a lifter that collects extruded materials, a supply conveyor that stores containers filled with extruded materials and inputs the containers to the first predetermined position in response to an input request, and stocks empty containers and containers that have collected residual materials. It consists of a discharge side conveyor and a control device that controls at least the lifting and lowering of the lifter, the opening and closing control of the discharge port of the hopper, and the container loading control of the supply side conveyor, and the lifter is configured to carry out empty containers or containers from which residual material has been collected. There is provided a feeding/discharging device for an extruder 14, characterized in that the extruder 14 is conveyed to a third predetermined position and discharged to the discharge side conveyor.

(Function) Containers filled with extrusion material are stocked in the supply side conhair in advance, and the supply side conhair loads one of the stocked containers into the first predetermined position of the lifter in response to a loading request from the control device. do.

Next, the lifter lifts the container to a second predetermined position above the hopper under the lifting control of the control device, overturns the container and throws the extruded material into the hopper, and returns the empty container to the first predetermined position. Return it and wait for the remaining material to be discharged from the hopper outlet.

When the extrusion work by the extruder is finished and the extruded material is to be replaced, the hopper discharge port is opened by the opening/closing control of the control device, and the remaining material is discharged into a container waiting at a first predetermined position and collected. let Next, the control device causes the lifter to transport the container to a third predetermined position by lifting/lowering control, and discharges the container onto the discharge side conveyor. Then, the controller again causes a new container filled with extrusion material to be introduced from the feed conveyor into the first predetermined position and causes the lifter to feed it to the hopper in the same manner as described above. Note that if the amount of extruded material to be supplied to the hopper is insufficient in one container, the control device transports the empty container in which the extruded material has been thrown into the lifter to a third predetermined position and transfers it to the discharge side. A new container is introduced from the supply conveyor into the first predetermined position, and the extrusion material filling this container is fed into the hopper in the same manner as described above.

(Example) An embodiment of the present invention will be described below with reference to the drawings.

The drawings show an extruder 1 used in the process of extruding and adhering insulation sheathing material for insulation-sheathed cables, and a material supply system according to the present invention that supplies insulation sheathing material (extrusion material) to the extruder 1 and collects the remaining material. The extruder 1 melts the insulating coating material, kneads it, and extrudes it from the plasticizing device 10 by inserting the core wire 3 sent out from the unillustrated sending device 10. It consists of a crosshead 11 for applying the molten insulation coating phase to the outer periphery of the core wire 3, and a hopper 12 placed on the extruder 101 and supplying the insulation coating material to the plasticizing device IO. A discharge port 12a for discharging residual material is provided on the lower side wall of the hopper 12, and a shutter 14, which is moved up and down along the wall surface by an air cylinder 13 attached to the side wall of the hopper 12, opens and closes the discharge port 12a. A discharge shoe 1-15 is attached that extends downward from the discharge port 12a toward the left in the figure. This discharge chute 15 is composed of an outer cylinder 15a and an inner cylinder 15b that is telescopically fitted into the outer cylinder 15a.
The inner cylinder 15b is protruded and retracted by an air cylinder 16 installed between brackets protruding from each lower outer wall of the inner cylinder 15b. A level meter 18 for measuring the capacity of the insulation coating inside the hopper 12 is attached to the lower side wall of the hopper 12 opposite to the outlet 12a. This level meter 18 turns on a warning light 53 on an operation panel 50, which will be described later, when the capacity of the insulating coating in the ompper 12 falls below a predetermined level.

Reference numeral 20 denotes a known lifter for raising and lowering the insulating coating material container 5. The lifter 20 is raised and lowered along a lifter guide rail 22 by a lifting drive device 21.
2 extends upward from the floor surface, and has an upper end portion 22a bent at a right angle above the flopper 12 on the extruder IO side. and,
When the container 5 is raised to the 1=end 22a position (second predetermined position) of the lifter guide rail 22 by the lifter 20, the container 5 is moved by a known overturning mechanism (not shown), so that the upper opening of the container 5 is raised to the above-mentioned hopper. 12 (into the state shown by the imaginary line B in the figure). The container 5 has a cylindrical shape and is open at the top as described above. Reference numeral 24 denotes a guide duct having an inverted truncated conical shape that prevents scattering of the insulating coating material thrown into the hopper 12 from the container 5 at the upper end 22a of the lifter guide rail 22. It is attached to the side wall of the lifter guide rail 22. The pipe 2 is placed along the inner wall generatrix of the guide duct 24.
5 is attached, the lower end of this pipe 25 is inserted into the upper opening of the hopper 12 with approximately medium heat slightly below the opening surface, the upper end is made to protrude from the upper opening surface of the guide duct 24, and the hose 26 is inserted. It is connected to a proar 27 attached to the side wall of the lifter guide rail 22 via the lifter guide rail 22 .

Reference numerals 30 and 40 indicate a supply side conveyor and a discharge side conveyor, respectively, which stock the containers 5, and the supply side conveyor 30
The guide rail 31 is tilted downward to the right (with the lifter 20 side facing downward), and when the lifter 20 is lowered to the lowest position (first predetermined position), the right end of the guide rail 31 as shown in the figure has a slight gap. and is connected to the lifter 20. A large number of rollers (not shown) are arranged on the upper surface of the guide rail 31, and the container 5 slides on these rollers.The container 5 mounted on the supply side container 30 slides on the rollers and is guided. It is stopped by a stopper (not shown) at a predetermined position slightly before the right end of the rail 31, and is stocked at that position. Containers 5 placed on the supply side container 3o following this container 5 are lined up and stocked after the container 5 placed first and stopped.

A discharge conveyor 40 is placed above the supply conveyor 30, and the guide rail 41 of the discharge conveyor 4o is tilted upward to the right (the lifter 20 side is upward).
0 is a predetermined position approximately in the middle of the lifter guide rail 22 (third
When the guide rail 41 is transported to a predetermined position (the state indicated by the imaginary line A in the figure), the right end of the guide rail 41 in the figure is connected to the lifter 20 with a slight gap. A large number of rollers (not shown) are also arranged on the upper surface of the guide rail 41, and when a container 5 is placed on these rollers, it moves four times to the left to the ultimate position of the guide rail 41, stops, and is stocked at that position. .

Reference numeral 50 denotes an operation panel for controlling the operation of the extruder 1 and the material supply/discharge device, and is placed and fixed on the upper end of a support rod 52 protruding from the floor surface. The operation panel 50 has a large number of operation buttons 51 and the warning light 53, and by operating one of these operation buttons 51, you can not only control the operation of the extruder 10, but also control the lifting and lowering of the lifter 20, and control the feed side conhair 30, which will be described later. input control, discharge port 12a of omper 12
opening/closing control, elongation/contraction control of the discharge chute 15, proar 27
It is possible to control on/off, etc.

Next, the operation of the material supply/discharge device configured as described above will be explained.

First, a large number of containers 5 filled with insulating coating material are stocked in the supply side container 30 in advance. The insulating coating material to be stocked may be of the same type in each container 5, but in preparation for high-mix, low-volume production, each container 5 is stocked with the first container 5 in accordance with the manufacturing order of the insulated cables. Predetermined insulating coating materials of different types are filled in order.

When setup work such as replacing the comple die of the crosshead 11 and cleaning the plasticizing device 10 and omper 12 is completed and a predetermined one of the operation buttons 51 on the operation panel 50 is pressed, the stopper of the supply side conhair 30 is pressed. The brake is released and the leading container 5 slides, and the container 5 is thrown into the lifter 20 waiting at the lowest position of the lifter guide rail 22. At this time, subsequent containers 5 mounted on the guide rail 31 slide on the guide rail 31 and are sequentially delivered to predetermined positions.

Next, when another predetermined operation button 51 is pressed, the elevating drive device 21 is activated and the lifter 20 rises to a predetermined position on the upper end 22a of the lifter guide rail 22, and the container 5 lifted to this position is moved by the tipping mechanism. The insulation covering material is thrown into the flopper 12 through the guide duct 24. When the insulation coating material has been added, the lifter 2
0 descends to the lowest position of the lifter guide rail 22 with the empty container 5 placed thereon, and stops and waits at that position.

When the warning light 53 on the operation panel 50 lights up and it is necessary to replenish the hopper 12 with the green-proofing liquid covering material, press the predetermined operation button 5.
1, the lifter 20 moves to the lifter guide rail 22.
The empty container 5 is pushed out and discharged to the discharge side conveyor 40 by a known method, and the lifter 20
is returned to the lowest position of the lifter guide rail 22. The empty containers 5 pushed out to the discharge side conveyor 40 slide on the guide rail 41 and are stocked at the leftmost extreme position. Next, in the same manner as described above, when the predetermined operation button 51 is pressed, the subsequent container 5 is loaded from the supply side conveyor 30 into the lifter 20, and when the predetermined operation button 51 on the side is then pressed, this container 5 is loaded into the lifter 20. 5 is lifted to the uppermost position of the lifter guide rail 22 by the lifter 20, and the insulation coating material is dropped into the hopper 12. Thereafter, the required amount of insulation coating material is supplied to the hopper 12 in the same manner.

When the extrusion work of the extruder 1 is completed, the following insulation covering material replacement work is performed. That is, first, a predetermined operation button 51 is pressed to operate the air cylinder 16, and the outlet end of the inner cylinder 15b of the discharge chute 15 opens the upper opening of the container 5 waiting at the lowest position of the lifter guide rail 22. The inner cylinder 15b is made to protrude as shown by the imaginary line in the figure. Next, the operation panel 50 is operated to close the shutter 12b, and the air cylinder 13 is actuated to lift the shutter 14 upward and open the discharge port 12a. Then, the remaining material in the homper 12 falls through the discharge port 12a and the discharge chute 15 into the empty container 5 waiting at the predetermined position below the homper 12, and is discharged and collected. At this time, when a predetermined operation button 51 is pressed to operate the blower 21, pressurized air is blown out from the opening at the tip of the pipe 25.
This air blows up powdered or pelleted insulating coating materials that have adhered to the inner wall surface and bottom surface of the hopper 12 due to static electricity, etc., and discharges them together with the air from the outlet 12a, so that the inside of the hopper 12 is extremely efficiently Cleaning will take place.

When the cleaning inside the ompper 12 is completed, the inner cylinder 15b of the discharge chute 15 is retracted to its original position by operating the operation panel 50, and the arm of the air cylinder 13 is extended to push down the shutter 14 to close the discharge port 12a.

Then, in the same manner as described above, the lifter 20 is moved to a predetermined position in the middle of the lifter guide rail 22, and the containers 5 are discharged to the discharge side container 40 and stocked. (When the cleaning and setup work is completed, the container 5 filled with a different type of insulating coating material is put into the lifter 20 from the supply side container 30 in the same way as described above, and the new insulating coating material is transferred to the hopper 12.
is supplied to

(Effects of the Invention) As described in detail below, according to the material supply/discharge device for an extruder of the present invention, a container filled with extrusion material that is charged into the first predetermined position below the hopper is fed into the hopper. The container is lifted to a second predetermined position above the collar, and the container is overturned to throw the extruded material into the hopper, while the empty container is returned to the first predetermined position and left waiting, and the remaining material is discharged from the discharge port. a lifter that collects extruded materials, a supply conveyor that stores containers filled with extruded materials and inputs the containers to the first predetermined position in response to an input request, and stocks empty containers and containers that have collected residual materials. a discharge side conveyor, at least lift control of the lifter, opening/closing control of the discharge port of the hopper;
and a control device for controlling container loading of the supply side conveyor, and the lifter is configured to convey empty containers or containers with collected residual materials to a third predetermined position and discharge them to the discharge side conveyor. Therefore, a series of material changes such as supplying the extrusion material to the extruder hopper and discharging the remaining material can be performed automatically and efficiently in a short time, and the work of extrusion material replacement can be saved. In addition, since the remaining material is collected and stocked and used again, an excellent effect is achieved in that the loss of extruded material is reduced.

[Brief explanation of drawings]

The drawing shows one embodiment of the present invention, and is a front configuration diagram of a material supply/discharge device of an extruder. 1... Extruder, 5... Container, 12... Hopper,
12a...Discharge port, 13.16...Air cylinder, 15...Discharge chute, 20...Lifter, 25.
... Pipe, 27... Blower, 30... Supply side conveyor, 40... Discharge side conveyor, 50... Operation panel.

Claims (1)

[Claims] 1. The extrusion material is directly thrown into and supplied from a container to a hopper having an openable and closable discharge port for discharging the residual material to the outside of the extruder, and the material is discharged by opening the discharge port. In the material supply/discharge device for collecting residual material into the container, a container loaded into a first predetermined position below the hopper and filled with the extrusion material is lifted to a second predetermined position above the hopper, and the container is lifted to a second predetermined position above the hopper. a lifter for inverting and throwing the extruded material into the hopper, while returning the empty container to the first predetermined position to wait, and collecting the remaining material discharged from the discharge port; a supply side conveyor for stocking and feeding the containers into the first predetermined position in response to a feeding request; a discharge side conveyor for stocking empty containers and containers with collected residual material; at least a lift control for the lifter, and a control for the hopper. comprising a control device that controls the opening and closing of the discharge port of the conveyor, and controls the loading of containers on the supply side conveyor,
A material supply/discharge device for an extruder, wherein the lifter conveys an empty container or a container with collected residual material to a third predetermined position and discharges it to the discharge side conveyor. 2. The extruder according to claim 1, further comprising a telescopic chute that guides the remaining material discharged from the discharge port to the container waiting at the first predetermined position. Material supply/discharge equipment. 3. The apparatus according to claim 1, further comprising a pressurized air supply device disposed at a position facing the upper opening of the hopper and blowing out cleaning pressurized air into the inside of the hopper. Extruder material supply/discharge device.