JPH08142055A - Purge material treatment method and apparatus - Google Patents

Abstract

PURPOSE: To enable in-process recycle by facilitating post-treatment and enhancing transport efficiency and enabling the movement use between respective molding machines. CONSTITUTION: A molding and cooling step 1S of molding the uncured purge material W discharged from an injection molding machine to be supplied through a hopper into a sheet by a molding roll 1R to which cooling water is supplied and cooling the sheet, a strip like cutting step 2S of cutting the cooled sheet like purge material W into a strip like form by a roll cutter C and a shredding step 3S of finely shredding the strip like purge material W into a short strip like form by a shear cutter H are provided.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention facilitates post-treatment such as landfilling and recycling of the purge material generated during color change and material change in injection molding.
The present invention relates to a purging material processing method and a purging material processing apparatus that enhance transportation efficiency.

[0002]

2. Description of the Related Art Conventionally, a purge material generated during color change and material change in injection molding is discharged from an injection molding machine into a dedicated container and left to cool. The purge material was hardened in a block shape, and in this block state or in a flat plate shape crushed, it was transported to a landfill site for landfill treatment, or transported to a treatment maker for recycling.

[0003]

The above-mentioned conventional purge material has a weight of 5 to 10 kg per injection molding machine of 2000 tons class, and its shape is 300 × 300.
Since it is a block-shaped product of × 300 mm ³ or more or a flat-shaped product, the transport efficiency is poor, and even if it is reprocessed, it cannot be put into the crusher as it is, and the process is difficult. was there.

Therefore, the present inventor has focused on the technical idea of the present invention that the uncured purge material discharged from the injection molding machine is formed into a sheet, cut into strips and finely chopped, and further researched. As a result of repeated development, the present invention has been achieved which achieves the purpose of facilitating post-treatment and improving transport efficiency, enabling mobile use between molding machines, and enabling in-process recycling.

[0005]

According to the purge material treatment method of the present invention (the first invention according to claim 1), the uncured purge material discharged from the injection molding machine is molded into a sheet and cooled. It comprises a molding step, a strip cutting step of cutting the sheet-shaped purge material into strips, and a shredding step of finely cutting the strip-shaped purge material.

The purging material treatment method of the present invention (the second invention according to claim 2) is a molding step of molding an uncured purging material discharged from an injection molding machine into a sheet by a molding roll, and the sheet. A cooling step of supplying a cooling medium to the purge material shaped like a sheet to cool the sheet-shaped purge material, and a strip-shaped cutting step of cutting the cooled sheet-shaped purge material into a strip shape by a roll cutter, A shredding step of shredding the strip-shaped purging material with a shear cutter.

A purging material treating apparatus of the present invention (the third invention according to claim 3) is a molding roll for molding the uncured purging material discharged from an injection molding machine into a sheet, and the molding roll. A cooling medium supply device that supplies a cooling medium to the purged material to cool the purged material, and a roll cutter that cuts the cooled sheet-shaped purged material into strips,
A shear cutter for finely cutting the cut strip-shaped purge material.

The purging material treating apparatus of the present invention (the fourth invention according to claim 4) is a chute disposed at the upper part of the apparatus main body into which the uncured purging material discharged from the injection molding machine is put, and the chute. A forming roll disposed below the chute so as to face the inside of the apparatus main body and forming the charged purge material into a sheet shape, and an arrangement below the forming roll so as to face the inside of the apparatus main body and supplied. And a cooling medium supply device for supplying a cooling medium to the sheet-like purge material, and a vertical cutting device which is arranged to face the inside of the apparatus body below the forming roll and cuts the cooled sheet-like purge material into strips. A roll cutter, a traverse cutter disposed below the forming roll so as to face each other in the apparatus main body, and periodically reciprocates in the thickness direction of the purging material to finely chop the strip-shaped purging material. Engage in the lower part of the device below the cutter Are freely arranged, it is made of a containing box for accommodating the shredded purged material.

[0009]

According to the purge material processing method of the first aspect of the present invention, the uncured purge material discharged from the injection molding machine is formed into a sheet shape and cooled, and the purge material formed into the sheet shape is stripped. The strip-shaped purging material is cut into small pieces.

In the purging material treatment method of the second invention having the above-mentioned constitution, the uncured purging material discharged from the injection molding machine is formed into a sheet shape by a forming roll, and the purging material formed into the sheet shape is processed. To supply a cooling medium to cool the sheet-shaped purge material, cut the cooled sheet-shaped purge material into strips with a roll cutter, and cut the strip-shaped purge material into fine pieces with a shear cutter. .

In the purging material treating apparatus of the third invention having the above-mentioned constitution, the molding roll molds the uncured purging material discharged from the injection molding machine into a sheet shape, and the cooling medium supply device A cooling medium is supplied to the purge material formed into a sheet to cool the purge material, the roll cutter cuts the cooled sheet-shaped purge material into a strip, and the shear cutter cuts the cut sheet. The strip-shaped purging material is cut into fine pieces.

In the purging material treating apparatus of the fourth invention having the above-mentioned structure, the uncured purging material discharged from the injection molding machine is introduced into the chute arranged in the upper part of the apparatus main body, and the chute disposed below the chute The charged purging material is formed into a sheet by the forming rolls that are arranged to face each other in the apparatus body, and the cooling medium supply is arranged to face the inside of the apparatus body below the forming roll. Depending on the device
A cooling medium is supplied to the supplied sheet-like purging material to be cooled, and the sheet-like purging material cooled by the vertical cutting roll cutter arranged facing the apparatus main body under the forming roll. The strip-shaped purging material is cut into strips and reciprocally moved in the thickness direction of the purging material by the transverse cutting cutter arranged to face the apparatus main body below the forming roll to finely chop the strip-shaped purging material. The purging material shredded by the accommodating box disengageably disposed under the device below the transverse cutting cutter is accommodated.

[0013]

According to the purge material treating method of the first invention having the above-mentioned effects, the uncured purge material discharged from the injection molding machine is formed into a sheet, cut into strips, and then finely chopped. This has the effect of facilitating post-treatment, improving transport efficiency, and enabling in-process recycling.

In the purging material treating method of the second invention having the above-mentioned operation, the uncured purging material discharged from the injection molding machine is formed into a sheet shape by a forming roll, and the sheet-like purging material is formed into a belt shape by a roll cutter. Since the strip-shaped purging material is finely shredded by the shear cutter, the post-treatment is facilitated, the transportation efficiency is improved, and the in-process recycling is enabled.

In the purging material treating apparatus of the third aspect of the present invention, the roll cutter cuts the cooled sheet-shaped purging material into strips, and the shear cutter cuts the stripped purging material. Since it is finely chopped, it has the effect of facilitating post-treatment and enhancing transport efficiency.

In the purging material processing apparatus of the fourth aspect of the present invention, the vertical cutting roll cutter cuts the sheet-shaped purging material into strips, and the horizontal cutting cutter periodically cuts the purging material in the thickness direction. Since the strip-shaped purging material is reciprocally shredded into small pieces, and the shredded purging material is accommodated in the storage box that is detachably attached to the lower portion of the apparatus, each processing step can be performed continuously. This has the effects of facilitating post-processing, improving transport efficiency, and allowing mobile use between molding machines.

[0017]

Embodiments of the present invention will be described below with reference to the drawings.

(First Embodiment) As shown in FIG. 1, the purge material treatment method of the first embodiment is such that the uncured purge material W supplied through a hopper discharged from an injection molding machine is cooled with cooling water. Forming cooling step 1S for forming and cooling into a sheet shape by the forming roll 1R supplied with, and a strip cutting step 2S for cutting the cooled sheet-like purge material W into a strip shape by a roll cutter 1C, and the strip shape cutting step 2S. It consists of a shredding step 3S in which the purge material W is shredded into strips by the shear cutter 1H.

In the molding and cooling step 1S, as shown in FIG. 1, the molten uncured purge material W discharged from the injection molding machine and supplied through the hopper has cooling water circulated therein for 2 to 3 mm. Is extruded as a thin sheet by a forming roll 1R made of a material having good heat conduction such as aluminum rotating oppositely at a facing interval, and the purge material W contacting from the surface of the forming roll 1R is cooled. It is a thing.

In the band-shaped cutting step 2S, as shown in FIG. 1, the cooled sheet-like purge material W supplied from the forming roll 1R is provided on the shaft by the roll cutter 1C. By cutting into a strip shape in the longitudinal direction, a strip-shaped sheet having a width corresponding to the pitch of the roll cutter 1C is obtained.

In the shredding step 3S, as shown in FIG. 1, the strip-shaped sheet purge material W supplied from the roll cutter 1C is disposed so as to face each other and is periodically arranged in the thickness direction of the purge material W. The shear cutter 1H reciprocally moves into small strips.

In the purge material treating method of the first embodiment having the above-mentioned operation, the molten uncured purge material W discharged from the injection molding machine is formed into a sheet shape, and finally cut into a strip shape. Since it is cut into small pieces into strips, post-processing and recycling are facilitated and transport efficiency is improved.
This has the effect of enabling in-process recycling.

(Second Embodiment) As shown in FIGS. 2 to 4, the purge material processing apparatus of the second embodiment is charged with the uncured purge material W in a molten state discharged from the injection molding machine. Chute 2 and the purge material W put into the chute 2
Forming roll 3 for forming a sheet into a sheet, and the forming roll 3
Cooling medium supply device 4 for supplying a cooling medium to the sheet-shaped purge material W supplied from the device, a vertical cutting roll cutter 5 for cutting the cooled sheet-shaped purge material W into strips, and the thickness of the purge material W It comprises a horizontal cutting cutter 6 which reciprocates periodically in a direction to finely cut the strip-shaped purge material W, and a storage box 7 which stores the purge material W finely cut by the horizontal cutting cutter 6.

The apparatus main body 1 is composed of a rectangular container having a U-shaped vertical cross section as shown in FIG. 2, and has a pyramid-shaped chute 2 into which a purge material W is put in a circular hole portion at the center of the upper surface. It is arranged.

The forming roll 3 is provided with knurls on its outer periphery so that the purge material W, which is disposed in the apparatus main body 1 below the chute 2 and faces each other with an interval of 2 to 5 mm, is easily pushed out. A pair of rolling rolls 3
1 and 32, the purge material W charged into the chute 2 can be formed into a thin sheet and supplied.

The forming roll 3 is composed of a pair of hollow cylinders made of a material having good heat conductivity such as aluminum, and is supplied with a cooling medium such as cooling water or cooling air to contact the outer peripheral portion of the melt. The purge material W can be cooled.

The facing distance between the rolling rolls 31 and 32 depends on the extrusion speed, but the molten purge material W having a temperature of 200 to 250 degrees should be 100 to 150 degrees.
The distance is appropriately adjusted within the range of 5 mm to 5 mm, and in the second embodiment, the facing distance and the extrusion speed can be freely adjusted by an adjusting mechanism (not shown).

As shown in FIG. 2, the cooling medium supply device 4 is disposed so as to face the inside of the main body of the apparatus below the forming roll 3, and the sheet-like purge material W supplied from the forming roller 3 is provided. Although the surface is cooled and solidified, since the central portion is still in a molten state, the sheet-like purge material W supplied from the forming roller 3 and being cut by the vertical cutter is cooled with cooling water or cooling air. The cooling medium spraying devices 41 and 42 for spraying and supplying the medium are configured to prevent the re-adhesion of the melted central portion of the purge material W cut by the vertical cutting cutter 5.

As shown in FIG. 3, the vertical cutting roll cutter 5 contacts the sheet-like purging material W at appropriate intervals arranged in parallel in the apparatus main body 1 below the forming roll 3 and moves downward. Rubber rollers 53, 53 for applying tensile force to the
A pair of truncated cone-shaped roll cutters 51, 52 having vertical cross-sections are disposed so as to oppose the two rotating shafts 55, 56 provided with, and the cooled sheet-shaped purge material W is cut into strips. It consists of the configuration to obtain.

As shown in FIG. 4, the cross-cutting cutter 6 is composed of rectangular cutters 61 and 62 which are arranged below the vertical cutting roll cutter 5 in the apparatus main body 1 so as to face each other. The rectangular cutter 61 is controlled by hydraulic cylinders 63 and 64 whose hydraulic pressure is controlled.
The strip 62 has a structure in which the strip-shaped purge material W can be finely cut into fine strips by periodically reciprocating in the guides 65 and 66 in the thickness direction according to the supply speed of the purge material W.

As shown in FIG. 2, the storage box 7 is composed of a box body 70 having a U-shaped vertical cross-section, which is detachably disposed under the apparatus body 1 below the transverse cutting cutter 6. The strip-shaped purging material W shredded by the horizontal cutting cutter 6 can be accommodated.

The action corresponding to the purge material processing method of the purge material processing apparatus of the second embodiment having the above construction will be described below. The molten uncured purge material W discharged from the injection molding machine is put into a pyramid-shaped chute 2 arranged in a circular hole at the center of the upper surface of the apparatus body 1 as shown in FIG.

The block-shaped purging material W introduced into the chute 2 constitutes the forming roll 3 which is arranged in the apparatus body 1 below the chute 2 so as to face each other with an interval of 2 to 5 mm. The pair of rolling rolls 31 and 3
2, the sheet is formed into a thin sheet of 2 to 5 mm and supplied.

Further, since the rolling rolls 31 and 32 are composed of a pair of hollow cylinders made of a material having good heat conductivity such as aluminum, the cooling rolls 31 and 32 are supplied with a cooling medium such as cooling water or cooling air. The molten purge material W that contacts the outer peripheral portions of the rolls 31 and 32 is cooled.

The cooling medium supply device 4 is in the form of a sheet supplied from the forming roller 3 by the cooling medium spraying devices 41 and 42 which are arranged so as to face each other inside the apparatus body below the forming roll 3. A cooling medium such as cooling water or cooling air is spray-supplied to the surface of the purge material W, and the surface is cooled and solidified, but the central portion is still in a molten state, and thus the sheet is being cut by the vertical cutter. A cooling medium such as cooling water or cooling air is spray-supplied to the strip-shaped purge material W, and the central portion of the purge material W, which has been cut by the vertical cutter 5, is still solidified by cooling and solidification. To prevent the

As shown in FIG. 3, the vertical cutting roll cutter 5 is a rubber roller 53 that abuts the sheet-shaped purging material W at appropriate intervals arranged in parallel in the apparatus main body 1 below the forming roll 3. , 53 are arranged so as to face the two rotary shafts 55, 56, and the sheet-shaped purge material W cooled by a pair of truncated cone-shaped roll cutters 51, 52 having a vertical cross section. It is to cut into.

As shown in FIG. 4, the cross-cutting cutter 6 is located below the vertical-cutting roll cutter 5 in the apparatus main body 1.
The rectangular cutters 61 and 62 arranged to face each other are
Hydraulic cylinder 6 whose supply of hydraulic pressure is controlled by a switching valve
The strip-shaped purge material W is finely cut into strips by periodically reciprocating in the guides 65 and 66 in the thickness direction according to the movement speed of the purge materials W in accordance with the movement of the purge materials W and 3. It is a thing.

As shown in FIG. 2, the housing box 7 is formed by a box body 70 having a U-shaped vertical cross-section, which is detachably disposed under the apparatus body 1 below the transverse cutting cutter 6. Strip-shaped purge material W chopped by the horizontal cutting cutter 6
Is to accommodate. If necessary, the contained strip-shaped purge material W is sent to a transportation pallet or a crusher. These powers can be either hand-operated or electric motor driven.

In the purging material processing apparatus and method according to the second embodiment having the above-mentioned operation, the vertical cutting roll cutter 5 is
The cooled sheet-shaped purge material W is cut into strips, and the transverse cutting cutter finely cuts the cut strip-shaped purge material into strips, facilitating post-treatment and transporting. It has the effect of increasing efficiency.

The purging material treating apparatus of the second embodiment is such that the chute 2, the forming roll 3, the cooling medium supplying device 4, the vertical cutting roll cutter 5, the horizontal cutting cutter 6 and the purging material W finely chopped into strips. Since the housing box 7 for housing is disposed in the compact apparatus main body, it is possible to move and use the molding machines.

Further, the purging material processing apparatus of the second embodiment is
Each of the above components is arranged in a compact device body,
Since it is possible to move and use each molding machine, the accommodation box 7
By directly introducing the fine strip-shaped purging material W housed in the hopper into the hopper of the injection molding machine, it is possible to recycle the material in the process.

In the purging material processing apparatus of the second embodiment, the sheet-shaped purging material W is being cut by the vertical cutting cutter by the cooling medium spraying devices 41 and 42.
A cooling medium such as cooling water or cooling air is spray-supplied to the
Since the central portion of the purge material W, which has been cut by the vertical cutting cutter 5, which is still in a molten state, is cooled and solidified, it is possible to prevent the cut surface from being redeposited.

In the purging material processing apparatus of the second embodiment, since the chute, the forming roll, the vertical cutting roll cutter and the horizontal cutting shear cutter are sequentially arranged in the vertical direction inside the apparatus main body, each processing step is continuously performed. There is an effect that it can be performed.

The embodiments described above are merely examples for the purpose of explanation, and the present invention is not limited to them. Those skilled in the art will recognize from the claims, the detailed description of the invention and the description of the drawings. Modifications and additions can be made without departing from the technical idea of the present invention.

In the above-described second embodiment, the example in which the molten purging material is supplied to the chute so that the temperature is not kept in the chute has been described, but the present invention is not limited thereto and the rolling is performed. In order to smoothly insert into the roll, it is necessary to keep the purge material at 150 ° C. or higher.
In order to keep the temperature at 50 ° C or higher, a mode in which the temperature around the chute is kept warm can be adopted.

In the above-mentioned embodiment, an example in which a cooling medium is supplied to the rolling roll to have both a rolling function and a cooling function has been described, but the present invention is not limited to this, and the rolling roll is Since it is necessary to keep the purge material at 150 ° C. or higher for smooth insertion processing, the cooling medium spraying device 41 arranged downstream without cooling the purge material in the rolling rolls,
According to 42, a mode can be adopted in which a cooling medium such as cooling water or cooling air is spray-supplied to the sheet-shaped purge material W to cool and solidify the purge material.

[Brief description of drawings]

FIG. 1 is an explanatory diagram showing a method of treating a purge material according to a first embodiment of the present invention.

FIG. 2 is a cross-sectional view showing a purge material processing apparatus according to the first embodiment of the present invention.

FIG. 3 is a plan view showing a vertical cutting roll cutter of the second embodiment device.

FIG. 4 is a perspective view showing a transverse cutting cutter of the second embodiment device.

[Explanation of symbols]

 1R Forming roll 1C Roll cutter 1H Shear cutter 1S Forming cooling process 2S Strip cutting process 3S Shredding process W Purge material

Claims (4)

[Claims] 1. A molding step of molding an uncured purge material discharged from an injection molding machine into a sheet shape and cooling, a band cutting step of cutting the purge material formed into a sheet shape into a band shape, and A method for treating a purge material, which comprises a shredding step of shredding a strip-shaped purge material. 2. A molding step of molding an uncured purge material discharged from an injection molding machine into a sheet shape by a molding roll, and a cooling medium is supplied to the sheet-shaped purge material to form a sheet shape. The cooling step of cooling the purge material, the strip-like cutting step of cutting the cooled sheet-like purge material into a band shape with a roll cutter, and the shredding step of shredding the belt-like purge material into small pieces with a shear cutter. A method for treating a purging material, comprising: 3. A forming roll for forming an uncured purge material discharged from an injection molding machine into a sheet, and a cooling medium supplied to the sheet-like purge material to cool the purge material. Purging material treatment, comprising: a cooling medium supply device; a roll cutter that cuts the cooled sheet-shaped purging material into strips; and a shear cutter that shreds the cut strip-shaped purging material into fine pieces. apparatus. 4. A chute disposed on the upper part of the apparatus main body into which the uncured purge material discharged from the injection molding machine is charged, and a chute disposed below the chute and opposed to each other inside the apparatus main body, and the charging is performed. And a molding roll for molding the purge material into a sheet shape, and is disposed so as to face the apparatus body below the molding roll.
A cooling medium supply device that supplies a cooling medium to the supplied sheet-like purge material, and a cooling medium supply device that is disposed to face the inside of the device body below the forming roll.
A vertical cutting roll cutter that cuts the cooled sheet-like purge material into a strip shape, and is disposed so as to face the apparatus body below the forming roll.
A traverse cutter that reciprocates periodically in the thickness direction of the purging material to finely chop the strip-shaped purging material; A purging material processing apparatus comprising: