JPH0249887B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] This invention relates to a method of supplying material to a plurality of injection molding machines.

[Prior Art] Materials are supplied to a molding machine by disposing an air pipe between a hopper of the molding machine and a material storage tank, and utilizing the flow of air generated within the pipe.

[Problems to be solved by the invention] In air conveyance using pipes, it is necessary to arrange an air pipe for each molding machine, and as the number of types of materials used for molding increases, it is necessary to arrange air pipes equal to the number of materials used for molding. I had to set it up. For this reason, the pipelines installed between many molding machines and each material storage tank are extremely complicated, which not only makes it difficult to clean the inside of the air pipe when changing materials or colors, but also makes maintenance and management difficult. Many problems also arose.

[Means for Solving the Problems] This invention was devised to solve the above problems, and its purpose is to supply material from above to a plurality of molding machines. Therefore, it is an object of the present invention to provide a new method that eliminates the conventional troubles and allows a predetermined amount of material to be quickly and accurately conveyed to a specific molding machine and supplied to a hopper.

A feature of the present invention for the above-mentioned purpose is that a required number of molding machines are arranged in parallel, a beam member equipped with a guide rail is installed above the hoppers of the molding machines, and a carrier bucket is movably installed on the guide rail. , arrange the required number of material storage hoppers on the beam member on the opposite side of the molding machine,
Different materials for molding are stored in each material storage hopper, and these materials are individually supplied from each material storage hopper to the hopper of each molding machine as needed by reciprocating the carrier bucket.

Further, the present invention will be explained in detail with reference to illustrated embodiments.

In the figure, 1, 2, and 3 are molding machines arranged in parallel, and 4 is the hopper 1a, 2a, and 3a of each molding machine 1, 2, and 3.
It is a beam member made of a rectangular pipe built over the top, and a guide rail 5 is attached to the side of the beam member.
Further, a transfer member 6 such as a circulation belt is provided over the top and inside of the beam member 4 so as to be able to reciprocate.

Six material storage hoppers 7, 8, 9, 10, 11, and 12 are arranged on the upper part of the beam member 4 and the guide rail 5 on the opposite side to the forming machines 1, 2, and 3, and the material storage hoppers 7, 8, 9, 10, 11, and Different materials for molding are stored in each storage hopper.

At the bottom of each material storage hopper 7 to 12, there is provided a shutter-type weighing box 15 in which a certain amount of material is measured by driving an air cylinder 13 for measuring and delivered to a carrier bucket 14 attached to the transfer belt 6. be.

The carrier bucket 14 is connected to a shuttle 16 that is attached to the transfer member 6 and moves on the guide rail 5, and the bottom part is always provided with a spring 17.
The bottom cover 18 is closed by a bottom cover 18 that can be opened and closed.

Further, on the lower side of the beam member 4, a lever 19 provided on the bottom cover 18 of the carrier bucket 14 is pressed against the spring 17 for each hopper position of the molding machines 1, 2, and 3, and the bottom cover 18 is opened. An air cylinder 20 is provided horizontally.

Therefore, from each of the material storage hoppers 7 to 12, the hoppers 1a, 2a of each molding machine 1, 2, 3,
The supply of material to 3a is carried out by the carrier bucket 14, which is moved by the transfer member 6.

The carrier bucket 14 serves as the material storage hopper 7.
12, the material measured in the weighing box 15 is transferred to the carrier bucket 14 by driving the air cinder 13.

The carrier bucket 14 that has received the material is moved to a predetermined molding machine 3 by moving the transfer member 6.
When the transfer member 6 stops, the transfer member 6 stops at a predetermined position above the hopper. This movement of the transfer member 6 can be performed by numerically controlled driving by a pulse motor 21.

When the carrier bucket 14 stops, the air cylinder 20 is driven to push open the bottom cover 18 and drop the material in the carrier bucket into the hopper 1a. At this time, the hopper 3a is in an advanced position together with the injection device. In addition, when the hopper has a lid, opening and closing the lid is the same as stopping the carrier bucket.
This may be done in conjunction with closing the bottom of the carrier bucket after feeding.

When the supply of material to the hopper is completed, the air cylinder 20 returns to its original position and the carrier bucket 1
4 closes and moves again together with the transfer member 6 towards the material storage hoppers 7-12. After the carrier bucket 14 was cleaned and blown,
It moves under one of the material storage hoppers, stops, transfers the material again, and moves to the next molding machine for material supply.

[Effects of the Invention] As described above, the present invention connects a required number of molding machines arranged in parallel and a predetermined number of material storage tanks by means of a carrier bucket that moves above the molding machines,
Since the material in the material storage tank is transferred in fixed amounts to the carrier bucket and the material is supplied to either hopper, there is no need to worry about the troubles that would occur when supplying the material using an air pipe.

In addition, since the material is supplied above the molding machine,
It has the advantage of being able to supply materials at fixed intervals without being affected by the molding operation.

[Brief explanation of the drawing]

The drawings schematically show an apparatus used in the method of supplying material to a molding machine according to the present invention, and FIG. 1 is a partially cutaway plan view, and FIG. 2 is a partially longitudinal side view at the hopper dryer position. FIG. 3 is a partially longitudinal side view at the hopper position. 1, 2, 3... Molding machine, 1a, 2a, 3a...
Hopper, 4... Beam member, 5... Guide rail,
6... Transfer member, 7-12... Material storage hopper, 13... Measuring air cylinder, 14... Calibrator bucket, 15... Measuring box, 20... Opening air cylinder.

Claims (1)

[Claims] 1 The required number of molding machines 1, 2, and 3 are arranged in parallel, and the hoppers 1a and 2 of these molding machines 1, 2, and 3 are arranged in parallel.
A beam member 4 equipped with a guide rail 5 is erected above the molding machines 1, 3a, and a carrier bucket 14 is movably provided on the guide rail 5. A number of material storage hoppers 7 to 12 are arranged to store different molding materials in each material storage hopper,
The materials are transferred to each material storage hopper 7 to 1 as needed by the reciprocating movement of the carrier bucket 14.
2 to the above hopper 1a, 2a, 3a of each molding machine
A method for supplying materials to a molding machine, characterized by individually supplying materials to a molding machine.