JPS6141511A - Method of kneading material and apparatus therefor - Google Patents

Abstract

PURPOSE:To make it efficiently possible both to peel off a kneaded material and to perform kneading operation without requiring much labour and time, by constructing a plurality of scrapers in such a way that they can be separately or simultaneously moved to or away from a kneading roll. CONSTITUTION:A plurality of scrapers 18a-18c are arranged in such a manner that they can be moved tangentially to or away from a kneading roll 1 around which a material W to be kneaded is present. The scrapers, with at least one, for example, the scraper 18b excepted, are pressed to the kneading roll 1 to peel off the kneaded material with part thereof remaining thereon, and immediately before all the peeled material is removed from the kneading roll, the scrapers pressed to the kneading roll are retracted, and the kneaded material taken out by part of the kneaded material remained on the kneading roll is again brought to the kneading roll to repeat the kneading. Thus, the peeling of a kneaded material and the kneading operation can be effected efficiently withou requiring much labor and time.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a method for kneading a kneaded material and an apparatus thereof, and more specifically, to a method for peeling off a kneaded material having a viscosity that is resistant to adhesion to a kneading roll. The present invention relates to a kneading method and a kneading device for kneading materials that can efficiently perform the kneading and kneading.

[Prior art]

Conventionally, in order to keep the physical properties of a kneaded material such as a rubber material in a constant state, the kneaded material wrapped around the kneading roll surface is peeled off and then returned to the kneading roll in a balled state. Two kneading methods are known, and a tandem kneading machine, in which multiple kneading rolls are arranged in series and the kneading work is repeated while feeding the material to be kneaded in sequence, is known. .

By the way, in the former case of the above method, l? The work efficiency was extremely poor, as workers had to cut and peel off the kneaded material that had adhered to the kneading roll with a scalpel, and then roll the stripped kneaded material into balls and send it to the kneading roll again. There is a problem that cutting the kneaded material is dangerous, requires a lot of effort and time, and requires skill.

Further, in the case of the conventional tandem system, when the kneading material is insufficiently kneaded, it is necessary to add one more kneading roll, which increases the cost and takes time. Furthermore, when using a tandem system, adding a kneading roll to an existing line requires the kneading machine to be stopped for several days, and it may not be possible to add a kneading roll due to installation space problems, or there may be restrictions on the number of compounds available. It had been.

[Purpose of the invention]

This invention was devised by focusing on the conventional problems, and its purpose is to efficiently strip off the kneaded materials and perform the kneading work without requiring much effort and time. The object of the present invention is to provide a method for kneading kneading materials that can be carried out well and an apparatus for the kneading method.

In addition, another object of the present invention is to
To provide a method and apparatus for kneading a kneaded material which is inexpensive and easy to maintain, and which can improve the quality of the kneaded material without adding a kneading roll.

[Structure of the invention]

In order to achieve the above object, this invention includes a plurality of scrapers which are arranged to move back and forth in the tangential direction of the kneading roll around which the material to be kneaded is wound over substantially the entire length of the kneading roll. At least one of the kneading rolls is left in pressure contact, and the kneading material is peeled off leaving a part of the kneading roll, and just before all the kneading material is pulled out from the kneading roll, the kneading roll is brought into pressure contact with the kneading roll. The gist of this method is to move back the scraper that is in the kneading roll, and to pull back the kneaded material pulled out by the kneaded material remaining on the kneading roll to the kneading roll again, thereby repeatedly kneading the kneaded material.

In addition, the present invention is configured such that a plurality of scrapers arranged in the tangential direction of the kneading roll can be moved forward and backward with respect to the kneading roll individually or simultaneously through actuators provided in each scraper. The main points are as follows.

[Embodiments of the invention]

The present invention will be described in detail below based on the accompanying drawings.

1 to 3 show a plan view, a front view, and a side view of a tandem-type kneading device embodying the present invention,
1 is a kneading roll, W is a kneading material with adhesiveness such as a rubber material, 10 is a kneading re-roll 1 (front roll 1
Fig. 3 shows a scraper device installed on the side of a roller (consisting of a and a sub-roll 1b).

In the scraper device 10, a fixed frame 12 tilted downward is installed on a pedestal 11, and guide rails 13a, 13 are provided on the fixed frame 12 along its longitudinal direction.
b has been installed. A slide frame 15 is slidably mounted on the guide rails 13a, 13b via wheels 14a, 14b, and this slide frame 15 is a support frame constructed between fixed frames 138, 13b,
Two hydraulic cylinders 1.7a and 17b installed in 16
It is configured to move forward and backward relative to the kneading roll 1 via (hydraulic actuators 17a; 17b).

On the side of one example of the kneading roll of the slide frame 15, there is a scraper of a predetermined length that is divided into a plurality of parts (divided into three in this embodiment) in the longitudinal direction of the kneading roll 1. 18a, 18b, 18(1) are attached, and between the scrapers 18a and 18b and 18b and 18c, the scrapers 18a, 18b, 18c are installed.
Two cutters 20a and 20b are attached that protrude slightly toward the kneading roll 1 side than the cutting edge 19 of the kneading roll 1.

The cutting edges 19 of the scrapers 18a, 18b, 18c and the tips of the cutters 20a, 20b are arranged so as to contact the kneading roll 1 in the tangential direction with a predetermined step, as shown in FIG. scraper 18a,
18c is the slide frame 15 shown in FIGS. 5 to 8.
It is fixed via a holder 21 provided on the side wall of. The two cutters 20a and 20b are attached to the lower part of the slide frame 15 via a bracket 22 in the tangential direction of the kneading roll 1, as shown in FIGS. 4 to 6. The two cutters 20a and 2Ob
The scraper 18b located in the center between the two is connected to a single hydraulic cylinder 23 (hydraulic actuator 23) mounted on the slide frame 15, and the scrapers 18a and 18b located on the left and right are moved forward and backward individually. It is configured so that it can be done.

The stroke end of the hydraulic cylinder 23 is set to be the same as the tip of the cutting edge 19 of the scraper 18a, 18c.

Note that 24 indicates a conveyor.

Next, a method for kneading the kneaded material W will be explained with reference to FIG. 9 ((d)).

First, the kneaded material W dumped out from the kneading machine (not shown) falls onto the kneading roll 1 which is being driven to rotate.
It is wound around the front roll 1a (see FIGS. 9(a) and 10(a)).

After a certain period of time has elapsed, first the fixed frames 13a, 13
Only the hydraulic cylinders 17a and 17b on both sides installed on the support frame 16 of b start to extend, and at the same time, the driving of the conveyor 24 is also started.

And the scraper 1 attached to the slide frame 15
8a, 18C and the cutter 20as20b move to the kneading roll 1 side, and first, the cutters 20a, 20b touch the kneaded material W wrapped around the outer peripheral surface of the kneading roll 1 in a direction perpendicular to the longitudinal direction of the kneading roll 1. Form a vertical groove in the direction. The cutter 2
The two left and right scrapers 18a and 18c located slightly behind the cutting edges of the blades 0a and 20b are in pressure contact with the kneaded material W, and the kneaded material W is in close contact with the outer peripheral surface of the kneaded roll 1.
Stripping is started leaving the center part of the kneaded material W on both sides, and the peeled off kneaded material W on both sides is sequentially pulled out to the process side by the conveyor 24 (see Fig. 9(b) and Fig. 10(b)).
. In this drawn state, just before all of the kneaded material W is pulled out from the kneading roll 1, the tip of the kneaded material W is detected by a detection means such as a phototube (not shown), and the tip is fixed as described above. The hydraulic cylinders 17a, 17b on both sides installed on the support frame 16 of the frames 13a, 13b are contracted, the scrapers 18a, 18c and the cutters 20a, 20b are retreated to their original positions, and the conveyor 24 is also stopped. Ru. Then, part of the kneaded material W wound around the center of the kneading roll 1 and the kneaded material W on both sides pulled out by the rotational driving force of the kneading roll 1 are pulled back to the kneading roll 1. The kneaded material W is repeatedly kneaded again (see FIGS. 9(C) and 10(C)).

After the kneading operation has been carried out for a certain period of time, the kneaded material W is stripped off and pulled back in the same manner as described above.

In this way, when the predetermined kneading work of the kneaded material W is completed, the three scrapers 18a are removed via the hydraulic cylinders 17a, 17b and 23.

18c and 18b move to the outer peripheral surface side of the kneading roll 1, strip off all the kneaded material W that is in close contact with the outer peripheral surface of the kneading roll 1, and carry it out to the next process by the conveyor 24. (See FIGS. 9(d) and 10(d)).

By repeating the above operations, the kneaded material W can be peeled off efficiently and the kneading operation can be performed well.

In the above embodiment, the scrapers 18a, 1 on both sides
8c is brought into pressure contact with the kneading roll 1 to strip off the kneaded material W, but the scrapers 18a located on both sides,
Scraper 18 located in the center without operating 18c
The kneaded material W may be peeled off by pressing only b, and the kneaded material W pulled out by the kneaded material W remaining on both sides may be pulled back. In this case, it is desirable to increase the width of the central scraper 18b.

That is, at least a part of the kneading roll 1 contains the kneading material W.
All you have to do is leave it behind and peel it off.

〔Effect of the invention〕

This invention provides at least one scraper of a plurality of scrapers disposed movably in the tangential direction of the kneading roll around which the kneaded material is wound over the entire length of 1 IR as described above. The scraper, which is in pressure contact with the kneading roll, is pulled back just before the kneaded material is completely pulled out from the kneading roll. At the same time, the kneaded material pulled out by the kneaded material remaining on the kneading roll is pulled back to the kneading roll again to repeatedly knead the kneaded material, thereby increasing the efficiency of material stripping and kneading work. There is an effect that can be done well. Further, even in the tandem system, the quality of the kneaded material can be improved without adding a kneading roll, and it is also inexpensive and easy to maintain. Furthermore, the kneading operation using the tandem system can be completely unmanned, thereby improving operational efficiency.

[Brief explanation of the drawing]

FIG. 1 is a plan view of a kneading apparatus embodying the present invention, FIG. 2 is a front view of FIG. 1, FIG. 3 is a side view of FIG. 2, and FIG. Fig. 5 is a front view showing the positional relationship, Fig. 5 is a plan view showing the state of the cutter installation, Fig. 6 is a front view of Fig. 5, Fig. 7 is a plan view of the holder showing the scraper installation. Front view of Fig. 7, Fig. 9(a) to Fig. 9(d) and Fig. 10(a) to Fig. 10(
d) is an explanatory diagram of the kneading method. 1...Kneading re-roll, 10...Scraper device, 1
7a, 17b... Hydraulic cylinder (hydraulic actuator), 18a ~ 18cm scraper, 19... Blade edge, 20a, 20b... Cutter, 23... Hydraulic cylinder (hydraulic actuator), W... Kneading material .

Claims (1)

[Scope of Claims] 1. At least one of a plurality of scrapers arranged so as to be movable in the tangential direction of the kneading roll around which the material to be kneaded is wound over substantially the entire length of the kneading roll. The scraper, which is in pressure contact with the kneading roll, is pulled back just before the kneaded material is completely pulled out from the kneading roll. A method for kneading a kneaded material, characterized by repeatedly kneading the kneaded material by pulling the kneaded material drawn out by the kneaded material remaining on the kneading roll back into the kneading roll again. 2. A plurality of scrapers arranged in the tangential direction of the kneading roll are configured so that they can be moved forward and backward with respect to the kneading roll individually or simultaneously through actuators provided in each scraper. A kneading device for kneading materials.