JPS6141510A - Scraper apparatus for kneading roll - Google Patents

Abstract

PURPOSE:To make it possible both to prolong the life of an edge of a scraper and to peel off positively a kneaded material, by arranging scrapers along the length of a kneading roll, and arranging cutters tangentially to the kneading roll. CONSTITUTION:When hydraulic cylinders 17a, 17b provided to a support frame 16 of fixed frames 13a, 13b and a hydraulic cylinder 23 provided to a slidable frame 15 are stretched to kneaded material W around a kneading roll 1, cutters 20a, 20b and scrapers 18a, 18b, 18c mounted to the slidable frame 15 are moved to the kneading roll 1, and the cutters 20a, 20b make grooves in the kneaded material W around the circumferential of the kneading roll 1. Then three scrapers 18a, 18b, 18c are pressed to the kneaded material W formed with the grooves to peel off completely the kneaded material W adhered to the circumferential of the kneading roll 1.

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to a scraper device for a kneading roll,
More specifically, the present invention relates to a scraper device for a kneading roll that reliably scrapes off kneaded material having a viscosity that allows it to stick to the kneading roll.

[Prior art]

Conventionally, kneading rolls used to keep the physical properties of kneaded materials, such as rubber materials, in a constant state are equipped with a scraper device to strip off the kneaded material wrapped around the kneading roll and knead it again. It is being

By the way, as a conventional scraper device, as disclosed in Japanese Patent Application No. 58-74914, for example, the kneaded material wound around the kneading roll is stripped off using a thin and elastic scraper. Such a scraper has the effect of scraping off the kneaded material, but because the scraper has a thin cutting edge, its durability has not been satisfactory.

On the other hand, if a scraper with a thick cutting edge is used, the surface of the kneading roll may not be smooth.
A gap is created between the surface of the kneading roll and the cutting edge of the scraper, and the kneaded material that comes out of that gap wraps around the kneading roll, requiring a lot of effort and time to scrape it off. There were also safety issues.

Furthermore, tandem kneading rolls have the problem that if the drive is frequently stopped due to small troubles such as wrapping of the kneaded material, the operating rate will drop significantly and full automation is extremely difficult. Ta.

[Purpose of the invention]

This invention was devised by paying attention to the conventional problems, and its purpose is to be able to extend the life of the scraper's cutting edge, and to be able to reliably strip off the kneaded material. Furthermore, it is an object of the present invention to provide a scraper device for kneading rolls capable of completely unmanning kneading work using a tandem system and improving operating efficiency.

[Structure of the invention]

In order to achieve the above object, the present invention provides a kneading roll that peels off the kneaded material wound around the kneading roll by pressing a scraper disposed so as to be movable forward and backward in the tangential direction of the kneading roll. The scraper device is configured such that the scraper is divided into a plurality of parts in the longitudinal direction of a kneading roll, and the scraper is located in front of the cutting edge of the scraper and kneads the kneaded material wound around the kneading roll. The gist is that a plurality of cutters are provided for cutting in a direction perpendicular to the longitudinal direction of the roll.

[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 scraper device in a kneading machine according to the present invention, in which 1 is a kneading roll, W is a sticky material such as a rubber material, etc. 10 indicates a scraper device installed on the side of the kneading roll 1. The scraper device 10 includes a pedestal 1
A fixed frame 12 tilted downward is installed on top of the frame 1,
Guide rails 13a and 13b are laid on this fixed frame 12 along its longitudinal direction.

Wheels 14a, 14b are attached to the guide rails 13a, 13b.
The slide frame 15 is slidably placed through the
This slide frame 15 is a fixed frame 13a, 13
It is configured to move forward and backward relative to the kneading roll 1 via two hydraulic cylinders 17a and 17b installed on a support frame 16 installed between b.

On the side of the slide frame 15 on the side of the kneading roll 1, 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, and 18c are installed, and between the scrapers 18a and 18b and 18b and 18C,
Two cutters 20a, 2 protrude slightly toward the kneading roll 1 side from the cutting edges 19 of the scrapers 18a, 18b, 18c.
0b is installed.

The cutting edges 19 of the scrapers 18a, 18b, 18c and the tips of the cutters 20a, 20b are arranged so as to be in contact with the kneading roll 1 in the tangential direction with a predetermined step, as shown in FIG. The scrapers 18a and 18c located at are fixed via holders 21 provided on the side walls of the slide frame 15 shown in FIGS. 5 to 8. 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
, 2Ob, the scraper 18b is located in the center between 2Ob and 2Ob.
The scrapers 18a, 1 are connected to the left and right scrapers 18a, 1
The operation with 8b is configured so that they can be moved forward and backward individually. 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, the effect will be explained.

6) First, the support frame 1 of the fixed frames 13a and 13b is
Hydraulic cylinder 17a installed in 6.

17b and the hydraulic cylinder 23 installed on the slide frame 15 are extended and operated, the slide frame 15
scrapers 18a, 18c and cutter 20 attached to
a, 20b and the individually provided scraper 18b move to the kneading roll 1 side, and first the cutter 20a,
20b forms vertical grooves in the kneaded material W wound around the outer peripheral surface of the kneading roll 1 in a direction perpendicular to the longitudinal direction of the kneading roll 1. And this kneaded material W with vertical grooves
On the other hand, three scrapers 18a, 18b, 18 on the left and right are located slightly behind the cutting edges of the cutters 20a, 20b.
c comes into pressure contact with the kneaded material W and completely strips off the kneaded material W that is in close contact with the outer peripheral surface of the kneading roll 1.

The scraper device 10 that has finished stripping the kneaded material W from the outer peripheral surface of the kneading roll 1 is operated by a hydraulic cylinder 17a,
It returns to its original position by the contraction of 17b and 23.

Further, the peeled-off sheet-like kneading material W is rewound by the rotation of the kneading roll 1 and kneaded by the kneading roll 1 again.

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

〔Effect of the invention〕

The present invention provides a scraper device for a kneading roll that scrapes off the kneaded material wound around the kneading roll by pressing a scraper disposed so as to be movable forward and backward in the tangential direction of the kneading roll. The scraper is configured by being divided into a plurality of parts in the longitudinal direction of the kneading roll, and
There are multiple cutters located in front of the scraper's cutting edge that cut the kneaded material wound around the kneading roll in a direction perpendicular to the longitudinal direction of the kneading roll, so that no heavy load is placed on the scraper's cutting edge. Therefore, the life of the scraper can be extended, the kneaded material can be reliably scraped off, and the tandem kneading operation can be completely unmanned to improve operating efficiency.

Moreover, since the structure is simple, it can be manufactured at low cost and maintenance is also easy.

[Brief explanation of the drawing]

FIG. 1 is a plan view of a scraper device implementing this invention;
Figure 2 is a front view of Figure 1, Figure 3 is a side view of Figure 2, Figure 4 is a front view showing the positional relationship of the scraper and cutter with respect to the kneading roll, and Figure 5 shows how the cutter is installed. 6 is a front view of FIG. 5, FIG. 7 is a plan view of the holder showing the installation of the scraper, and FIG. 8 is a front view of FIG. 7. 1...Kneading roll, 10...Scraper device, 1
8a-18C...Scraper, 19...Blade tip, 20
a, 20b...cutter, W...kneading material.

Claims (1)

[Claims] A scraper device for a kneading roll that peels off the kneaded material wound around the kneading roll by pressing a scraper disposed so as to be movable forward and backward in the tangential direction of the kneading roll, wherein the scraper comprises: The kneading roll is divided into a plurality of parts in the longitudinal direction, and is located in front of the cutting edge of this scraper and cuts the kneaded material wound around the kneading roll in a direction perpendicular to the longitudinal direction of the kneading roll. A kneading roll scraper device characterized by being provided with a plurality of cutters.