JP2726199B2 - Heating roll cleaning device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heating roll cleaning apparatus, and more particularly, to a heating roll cleaning apparatus for kneading a synthetic resin or the like and cleaning a surface of a heating roll for producing a sheet.

[0002]

2. Description of the Related Art In general,
When a sheet made of a material such as a synthetic resin such as a vinyl chloride resin or a silicone resin, or an elastic polymer such as rubber or EPDM is manufactured, a gel or fisheye is generated in the sheet due to its quality control. You need to check if there is any.

[0003] In addition, even a processing maker that processes a material obtained from a manufacturer into various molded products needs to inspect the obtained material in advance to confirm the presence or absence of gel, fisheye, and the like. If a gel, fisheye, etc. are present in the molded article, when printing on the surface of the molded article,
This is because the ink is poorly loaded and only defective products are obtained.

[0004] In order to check for the presence of a gel, fisheye, or the like in a material, particularly a synthetic resin, it is necessary to produce a sheet of the material, and such a sheet can be produced by a kneading apparatus.

The kneading apparatus has a configuration in which a pair of heating rolls arranged in parallel are arranged in parallel with a predetermined gap, for example, a gap of about 0.2 mm.

A powdery synthetic resin is loaded from above the pair of heating rolls, and the pair of heating rolls is rotated to knead the synthetic resin. At this time, heat and shear force are applied to the synthetic resin by making the rotation speeds of the two heating rolls different.

[0007] By the kneading of the synthetic resin, a sheet of the synthetic resin is manufactured in a state of hanging down from both heating rolls. On the other hand, a part of the synthetic resin in a molten state or a semi-molten state adheres to the surfaces of the two heating rolls, and if left as it is, the gap size between the two heating rolls changes and becomes non-uniform, resulting in a sheet of the synthetic resin sheet to be manufactured. The thickness also becomes uneven.

For this reason, in the prior art, an operator wipes and removes the synthetic resin adhering to both heating rolls with a cloth or the like. However, such removing means requires much time for the removing operation. However, there is a problem that the operation rate of the kneading device is reduced. In addition, since both the heating rolls are at a considerably high temperature, there is a danger of burns or the like when performing manual work.

Accordingly, an object of the present invention is to provide a heating roll cleaning apparatus capable of automatically cleaning the surfaces of a pair of heating rolls, improving the operation rate and ensuring safety. It is assumed that.

[0010]

According to a first aspect of the present invention, there is provided a cleaning roll for removing a synthetic resin adhered to the surfaces of a pair of heating rolls, a support for supporting the cleaning roll, and a heating device. When kneading, the cleaning roll is the pair of heating rolls.
Retracting the support so as to al retracted, before the time of cleaning
The surface of the cleaning roll is on each surface of the pair of heating rolls.
A heating roll cleaning apparatus, comprising: a cleaning roll displacement means for advancing the support so as to slide, and a stain removing member for removing a synthetic resin adhered to the surface of the cleaning roll.

[0011] According to a second aspect of the invention, a cleaning roller for removing extraneous synthetic resin surface of the pair of heating rolls, the
A dirt removing member for removing dirt from the surface of the cleaning roll;
Rotation supporting the cleaning roll together with the dirt removing member
A support, so that the surface of the cleaning roller is selectively sliding contact with one of the surfaces of the pair of heating rolls,
Rotary drive for rotating the rotary support about a rotation axis
A heating roll cleaning device comprising a mechanism .

[0012]

The operation of the above-described heating roll cleaning apparatus will be described below.

A kneaded product is manufactured by loading a material such as a synthetic resin between a pair of heating rolls and driving both heating rolls so as to wind the synthetic resin. After the kneading, the synthetic resin in a molten or semi-molten state is attached to each of the two heating rolls by the operation of the two heating rolls.

[0014] The cleaning roll displacement means is provided at the rear during heating and kneading.
Cleaning roll that has retreated and evacuated from a pair of heating rolls
The surface of which is in sliding contact with the surfaces of the pair of heating rolls.
Move forward. At this time, the rotation directions of the rolls are preferably adjusted so as to be opposite to each other. However, if the rotation directions of the rolls are the same, it is preferable to make the rotation speeds different.

Thus, the cleaning roll rotates and wipes off the synthetic resin adhering to the surfaces of both heating rolls.
With the operation of such a cleaning roll, the surface of the cleaning roll becomes dirty with the synthetic resin wiped from both the heating rolls. At this time, the dirt removing member removes dirt on the surface of the cleaning roll.

As a result, the surfaces of both heating rolls can be reliably and automatically cleaned, and the operating rate of both heating rolls can be improved.

Further, since cleaning work by hand as in the prior art is not required, safety can be ensured.

As the cleaning roll displacement means, a support for supporting the cleaning roll and a hydraulic cylinder for driving the cleaning roll are used.

As the cleaning roll, a roll formed of the same material as the synthetic resin adhering to both heating rolls in a cylindrical shape is preferable. Further, the surface hardness of the cleaning roll is preferably lower (softer) than the surface hardness of both heating rolls.

As the dirt removing member, a scraper for removing dirt on the surface of the cleaning roll is used.

It is preferable that the two heating rolls and the cleaning roll can have different rotation speeds and rotation directions by respective driving sources.

Further, according to the heating roll cleaning device according to the second aspect, the rotation drive mechanism section rotates the cleaning roll into the cleaning roll.
The rotating support that supports the dirt removing member
The surface of the cleaning roll is rotated by being driven to rotate.
Selective for any one of the surfaces of the pair of heating rolls
To make sliding contact.

As a result, the cleaning roll rotates and wipes off the synthetic resin adhering to the surfaces of both heating rolls.
With the operation of the cleaning roll, the surface of the cleaning roll becomes soiled by the synthetic resin wiped from the heating roll. At this time, the dirt removing member removes dirt on the surface of the cleaning roll.

As a result, the cleaning of the surfaces of both heating rolls can be selectively, reliably and automatically performed, and the operation rate of both heating rolls can be improved.

[0025]

Embodiments of the present invention will be described below in detail.

A heating roll cleaning device 1 shown in FIG. 1 is a pair of heating rolls 2, 3 arranged in parallel with a gap G of about 0.2 mm for kneading a synthetic resin and producing a kneaded product.
It is arranged below.

This heating roll cleaning apparatus 1 has a surface hardness lower (softer) than that of the heating rolls 2 and 3 formed of the same material as the synthetic resin for cleaning the surfaces of the pair of heating rolls 2 and 3. A cleaning roll 4 having
Cleaning roll displacement means 5 disposed below an intermediate portion of the heating rolls 2 and 3 for slidingly contacting the cleaning rolls 4 with respective surfaces of the pair of heating rolls 2 and 3; And a scraper 6 as a stain removing member.

The heating rolls 2 and 3 are driven at different rotational speeds by individual driving sources (not shown) in the direction of the arrow shown in FIG.

The heating rolls 2 and 3 have springs 8 and
It is supported by supporting members 10 and 11 provided with the member 9 so that the distance between them can be changed arbitrarily.

The cleaning roll 4 is provided with a dedicated driving source, and is driven at a different rotation speed from the heating rolls 2 and 3, for example, in the same direction as the heating roll 3 as shown in FIG. Has become.

The cleaning roll displacing means 5 includes a support 12 for supporting the cleaning roll 4 and the support 12 shown in FIG.
And a hydraulic cylinder 7 for displacing the heating rolls 2 and 3 to slide the cleaning roll 4 on the respective surfaces of the heating rolls 2 and 3, respectively. Next, the operation of the heating roll cleaning device 1 will be described.

A synthetic resin is loaded between a pair of heating rolls 2 and 3, and both heating rolls 2 and 3 are driven in the direction of the arrow shown in FIG. Thus, a kneaded product is manufactured. By the operation of both heating rolls 2 and 3, both heating rolls 2 and 3 are
Synthetic resin in a molten or semi-molten state adheres as dirt.

For both of the heating rolls 2 and 3,
The distance between the two members is set to about several cm by the support members 10 and 11, and in this state, the cleaning cylinder 4 is supported by the hydraulic cylinder 7 of the cleaning roller displacement means 5 via the support 12.
Is displaced together with the scraper 6 toward the heating rolls 2 and 3 as shown in FIG. 2, and the cleaning roll 4 is brought into sliding contact with the surfaces of the heating rolls 2 and 3. At this time, the respective rotating directions of the heating rolls 2 and 3 and the cleaning roll 4 are set to, for example, the directions of the arrows shown in FIG.

Thus, the cleaning roll 4 forcibly wipes off the synthetic resin adhering to the surfaces of the heating rolls 2 and 3. With the operation of the cleaning roll 4, the surface of the cleaning roll 4 becomes dirty with the synthetic resin wiped from the heating rolls 2 and 3.
Removes and removes dirt on the surface of the cleaning roll 4.

As a result, the surfaces of both heating rolls 2 and 3 can be reliably and automatically cleaned, and the operating rate of both heating rolls can be improved.

Further, according to the heating roll cleaning device 1, since the manual cleaning work as in the related art is not required, the safety of the worker can be ensured.

Next, another embodiment of the present invention will be described with reference to FIG.

A heating roll cleaning apparatus 1A shown in FIG. 3 includes a rotary support 15 for supporting the cleaning roll 4 together with the scraper 6, instead of the hydraulic cylinder 7 and the support 12.
A feature is that cleaning roll displacing means 5A using a rotation drive mechanism (not shown) that drives the rotation support 15 in the directions of arrows a and b shown in FIG.

According to the heating roll cleaning device 1A, the cleaning roll 4 is brought into sliding contact with either one of the surfaces of the heating rolls 2 and 3 by the cleaning roll displacement means 5A.

Thus, the cleaning roll 4 wipes the synthetic resin adhered to the surface of the heating roll 2 or 3 while rotating. With the operation of the cleaning roll 4, the surface of the cleaning roll 4 becomes dirty with the synthetic resin wiped from the heating roll 2 or 3. At this time, the scraper 6 removes dirt on the surface of the cleaning roll 4. Remove.

As a result, the cleaning of the surfaces of the heating rolls 2 and 3 can be selectively, reliably and automatically performed, and the operation rate of the heating rolls 2 and 3 can be improved. Also, safety is improved.

The present invention is not limited to the embodiments described above, and various modifications can be made within the scope of the invention.

For example, the cleaning roll displacing means 6 may be configured to use an electromagnetic plunger and a spring in addition to the hydraulic cylinder 11.

[0044]

According to the first aspect of the present invention described above, since the above-described configuration is employed, the cleaning of the pair of heating rolls to which the synthetic resin adheres can be performed automatically and reliably. It is possible to provide a heating roll cleaning device capable of improving the operation rate of the heating roll and ensuring safety in operation.

According to the second aspect of the present invention, since the above configuration is adopted, the pair of heating rolls to which the synthetic resin adheres can be selectively, automatically and reliably cleaned. A heating roll cleaning device having the same effect as in the case can be provided.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of an apparatus according to an embodiment of the present invention.

FIG. 2 is a schematic explanatory view showing the operation of the apparatus according to the embodiment of the present invention.

FIG. 3 is a schematic configuration diagram of an apparatus according to another embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Heating roll cleaning device 2 Heating roll 3 Heating roll 4 Cleaning roll 5 Cleaning roll displacement means 6 Scraper

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Takashi Kimura 3-43-2 Ebisu, Shibuya-ku, Tokyo Japan Inside Kiso Co., Ltd. (72) Inventor Masaaki Suzuki 3-43-2 Ebisu, Shibuya-ku, Tokyo Date (56) References JP-A-6-15656 (JP, A) JP-A-59-38783 (JP, A) JP-A-3-146979 (JP, A) JP, U)

Claims (2)

(57) [Claims] 1. A synthetic resin adhered to the surfaces of a pair of heating rolls.
A cleaning roll for removing the cleaning roll, and a support for supporting the cleaning roll.
During heating and kneading, the cleaning roll is rotated by the pair of
Retracting the support so as to retract from the heat roll, a cleaning roll displacement means for advancing said support in sliding contact on the surfaces of the surface the pair of heating rolls of the cleaning roller during cleaning, the cleaning roller Synthetic tree attached to the surface of
A heating roll cleaning device comprising: a dirt removing member for removing grease . 2. A synthetic resin adhered to surfaces of a pair of heating rolls.
Cleaning roll for removing dust and dirt on the surface of the cleaning roll
A dirt removing member for removing the dirt,
A rotating support for supporting with the removing member;
As the surface of the Le is selectively sliding contact with one of the surfaces of the pair of heating rolls, rotary shaft the rotary support
And a rotation drive mechanism for rotating the heating roll about the heating roller.