JPH084266Y2 - Automatic material supply system for injection molding machine - Google Patents

Description

[Detailed description of the device]

[0001]

[Field of Industrial Application] When supplying raw materials to an injection molding machine, the present invention mixes the virgin raw materials in a completely dried state and the recycled materials in an optimum crushed state in a desired mixing ratio. In addition, the present invention relates to an apparatus configured so that automatic supply to an injection molding machine can be systematically performed.

[0002]

2. Description of the Related Art Conventionally, when supplying raw materials to an injection molding machine, that is, when supplying a virgin raw material and a mixed material with a recycled material, a virgin raw material tank, a virgin raw material dryer, Or properly install molded products, runner separation device, runner crushing device,
It has been a conventional means to supply raw materials to an injection molding machine through a mixer depending on a transportation device (mainly an air transportation device is adopted). As is clear from such a configuration, since various equipment and devices are installed scatteredly, the space in the molding factory becomes momentum and becomes a squeeze, which greatly affects the work efficiency and reduces the productivity. There were many problems such as deterioration.

[0003]

Conventionally, according to the raw material supply device for this kind of injection molding machine, even if it is a relatively new type, it can be said that the virgin raw material tank,
It has been customary today that a crushing device, a crushing material tank, a mixing device, etc. are installed, and after being passed through a dryer by an air transportation device, they are supplied to an injection molding machine. However, when supplying raw materials to an injection molding machine, ... The raw material that needs to be dried is a virgin raw material. That is, since the recycled material is a material immediately after injection molding, it is sufficiently dried. ． Therefore, there is no point in drying recycled materials. ． However, since various equipment and devices are scattered around the injection molding machine, the work space becomes vigorous and narrow. ． For this reason, the working conditions deteriorate and the workability is extremely poor. ． Depending on the above items, the operating rate of the injection molding machine is low,
Productivity is low in general ... The present invention is intended to fundamentally solve these problems.

[0004]

The device of the present invention is based on
As a means to fundamentally solve the problem described in Section 3, the virgin raw material tank (that is, the virgin raw material storage tank) is daringly removed, and only the virgin raw material is allowed to pass through the dryer, which is a wasteful work. The idea is to save steps. Based on such a basic idea, when supplying raw materials to an injection molding machine, focus on only the equipment that is absolutely necessary, and, of course, make sure that the equipment that is absolutely necessary is three-dimensionally placed in the proper place on the main frame. It is said that the work space is secured as much as possible (that is, the space is effectively used) and the workability is improved by arranging and mounting the work space. That is, a virgin raw material dryer 1 for injection molding work is provided on one side of the main body stand 10, and a crusher 2 for reusing a runner or the like is provided on the other side of the dryer.
While the tanks 3 for storing recycled materials that allow the crusher 2 to pass through are provided at the bottom, respectively, while each element of each of the above-mentioned Saruyuki and others can be adapted in advance to a desired transport amount and mixing ratio, Based on the transport speed and the transport pressure, the dried virgin raw material 1 for the injection molding work transfers the dried virgin raw material to the delivery conduit 4.
And, from the storage tank 3, while introducing the recycled material to the delivery pipe line 5, and further introducing the same into the mixing device 6 and mixing them for a fixed time suitable for the raw material, after that, An automatic material supply system device for an injection molding machine characterized by being systematically configured so that it can be transported to the material tank of the injection molding machine by the conduits 7 and 8, and 9 in the figure is shown. Virgin raw material feeder, 11
Is a product / runner separator after injection molding, 12 and 12 are casters for movement, 13 and 14 are control boxes,
... is represented. Further, although the pneumatic transportation device is omitted in the figure, depending on various transportation conditions, such as raw material type, transportation amount, mixing ratio, etc., the pressure transportation type or suction type may be used at any time. Needless to say, it is possible.

[0005]

The apparatus for automatically supplying raw material for an injection molding machine according to the present invention is configured as described above, and a certain amount of virgin raw material is fed from the virgin raw material feeder 9 to one side of the main frame 10. By being charged in the virgin raw material dryer 1 for injection molding work, which is arranged in the above position, and being heated at a constant temperature for a certain time after charging, the virgin raw material reaches a completely dried state. On the other hand, the runner etc. molded by the injection molding machine and the accompanying products are immediately cut and separated in the product / runner separator 11 which is mounted on the upper part of the other side of the main frame 10 as shown in FIG. However, the runner and the like separated by the product / runner separator 11 is disposed immediately below the product / runner separator 11, and is crushed into an appropriately sized fragment by the crusher 2. It is stored in a storage tank 3 for recycled material provided directly below the storage tank 3. Thus, when a certain period of time elapses, the transport amount that is set in the control boxes 13 and 14 (wiring diagram is omitted) of the device of the present invention and is desired in advance according to the sequence operation based on the operation of the timer or the like. (Although it is determined by the shape and size of the molded product to be molded and the number of molds to be used per molding die, etc., the number of shots of the injection molding machine will eventually become a factor) and the mixing ratio ( The ratio of recycled material to be mixed with virgin raw material, the value determined by various factors such as shape and size of molded product molded by injection molding machine and environmental conditions used,
In the end, not only the physical properties of the molded product but also the mechanical strength are of utmost importance, and since the material of the molding raw material also has a great influence, the strength test of the sample based on the approximate mixing ratio. Based on the results of the above, the transportation speed and the transportation pressure in the pipeline (which should be determined based on the mixing ratio of the recycled material to the virgin raw material) and the basic According to Dalton's law of partial pressure), the dried virgin raw material dryer 1 for injection molding work delivers the dried virgin raw material to the delivery conduit 4 and the storage tank 3 Guides the recycled materials to the sending pipes 5, respectively, and further introduces them into the mixing device 6,
Mixing for a certain period of time that is most suitable for raw materials:
At the time of such mixing, the Dalton's partial pressure law described above is used: that is, the total pressure = the sum of the partial pressures of the component gases. Assuming that the delivery pipe internal pressure is Q, the molding raw material mixing ratio in this case is expressed by the following equation. That is: Amount of virgin raw material: Amount of recycled material = P: Q From the place expressed by the above relational expression, 100
Mixing can be performed with a mixing accuracy of%. After that, it can be transported by conduits 7 and 8 to the material tank to the injection molding machine. Due to the above-mentioned configuration, even if the raw material is accurately supplied to the injection molding machine, there is no waste and the mixing accuracy of the virgin raw material and the recycled material is 100%.
Furthermore, the whole device is compact and can be freely moved, and the space can be fully utilized, so it can be said that it is perfectly suitable for energy saving, space saving and resource saving times.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the device of the present invention will be described with reference to FIG. In this figure, a virgin raw material dryer 1 for injection molding work is provided on one side (left side in the figure) of the main body frame 10.
On the other side (on the right side in the figure), a crusher 2 for reusing a runner and the like is provided on the upper side, and a tank 3 for storing recycled material for passing the crusher 2 is provided on the lower side. ing. In the present embodiment, the product / runner separator 11 is attached directly above the crusher 2 and the mixing device 6 is attached in the central lower part of the main body stand 10. . Therefore, from the lower part of the virgin raw material dryer 1 for the injection molding work which is disposed on one side (the left side in the figure) of the main body stand 10, the dried virgin raw material depends on the delivery pipe line 4, and The
Only the runners selected and separated from the product / runner separator 11 at the top of the other side (right side in the figure) of the main frame 10 are
After passing through the crusher 2 disposed directly below it, it is once stored in the storage tank 3 for recycled material immediately below, and then introduced into the mixing device 6 by the delivery pipe line 5 and merged. After such introduction and merging, mixing can be performed in a mixing process for a certain period of time that is suitable for the raw material, etc.

[0005]

As will be described in detail in "Function", the mixing accuracy is approximately 100% because it is based on the transportation speed and the transportation pressure in the pipeline such that the desired transportation amount and mixing ratio can be obtained in advance. After that, go to the material tank of the injection molding machine,
It is said to be transported by the conduits 7 and 8. In the present embodiment, the virgin raw material dryer 1 is provided on the left side of the main frame 10, and on the right side thereof, a crusher 2 for reusing a runner and the like, a tank 3 for storing recycled materials, and the like. Although various elements are arranged, due to the layout of the factory, etc., even if the left and right are completely replaced, there is no difference in terms of their characteristics and effects. It adds that there is no.

[0005]

As will be described in detail in "Function", since the transport rate and the transport pressure in the pipeline are set so that the desired transport rate and the desired mixing ratio can be obtained in advance, the mixing accuracy can reach 100%, And then the conduits 7 and 8 to the material tank of the injection molding machine.
It is perfect for transportation. In this embodiment, the virgin raw material layer 1 is provided on the left side of the main body stand 10, and on the right side thereof, a crusher 2 for reusing a runner and the like, and a tank 3 for storing recycled material.
Various elements such as etc. are arranged, but due to the layout of the factory, etc., even if it is arranged in a place where the left and right are completely replaced, the characteristics and effects etc. will change It is added that it is not.

[0007]

As described above, according to the device of the present invention, all three major functions of the raw material, that is, the virgin raw material and the mixed material with the recycled material to the injection molding machine, that is, the drying, the mixing and the supplying, are provided. As a built-in device, since it is a compact device in which the whole device is built into the main frame, there is an extremely enormous device that does not take up space and contributes to the improvement of productivity. .

[Brief description of drawings]

FIG. 1 is a “partially omitted front view” showing an embodiment of the device of the present invention.

[Explanation of symbols]

 1 Virgin Raw Material Dryer 2 Crusher 3 Storage Tank 4 Delivery Pipeline 5 Delivery Pipeline 6 Mixing Device 7 Conduit 8 Conduit 9 Virgin Raw Material Feeder 10 Main Frame 11 Product / Runner Separator 12 Transfer Caster 13 Control Box 14 Control box

Claims (1)

[Scope of utility model registration request] 1. A virgin raw material dryer 1 for injection molding work is provided on one side of a main frame 10, and a crusher 2 for reusing a runner or the like is provided on the other side.
Reservoir storage tanks 3 for passing the crusher 2 are provided at the lower part, respectively, while transporting speeds that can be appropriately synthesized in advance by the respective elements of Serano et al. Based on the transport pressure and the transport pressure, the dried virgin raw material dryer 1 for the injection molding operation delivers the dried virgin raw material to the delivery conduit 4, and the storage tank 3 delivers the recycled material to the delivery conduit 5.
In addition, each of them is guided and introduced into the mixing device 6 for a certain period of time suitable for the raw material, and then mixed to the material tank of the injection molding machine by the conduits 7 and 8. As you can see, it is an automatic material feeder for injection molding machines, which is characterized by a system configuration.