JPH06134693A - Rubber sheet cutting device - Google Patents

Abstract

PURPOSE:To smoothly carry a rubber sheet on the following side after cutting even if it is a rubber sheet of strong tackiness and not to affect on the life of a take-up conveyor. CONSTITUTION:A rubber sheet W on a calendar line is cut by a cutter constituted of a fixed blade 22 and a rotary blade 24, and it is peeled by a pusher 29 which is the head end of a peeling mechanism 27 provided on the fixed blade 22 coated with resin 33 for antitack. Consequently, it is possible to deliver a rubber sheet W2 to a take-up machine by forcibly peeling the rubber sheet W2 on the following side adhered to the fixed blade 22.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rubber sheet cutting device for cutting a rubber sheet wound on a winder into a predetermined length in a calendar line for producing a rubber sheet. The tip is peeled off to facilitate smooth rewinding.

[0002]

2. Description of the Related Art A rubber sheet continuously fed from a calendar line is cooled by three cooling rolls 1 and then fed to a take-up conveyor 3 via a guide roll 2 as shown in FIG. Winding is performed alternately with the liner sheets 6 and 7 using the base winding machines 4 and 5, and the rubber sheet W having a predetermined length is wound around one of the winding machines 4 and (5). Then, the rubber sheet W is cut by the cutter 9 of the rubber sheet cutting device 8 on the upstream side of the winding machines 4 and 5, and is rewound to the other winding machine 5, (4).

A rubber sheet cutting device 8 installed in a calendar line for producing such a rubber sheet W has a fixed die 10 installed above the take-up conveyor 3.
The rubber sheet W is slid along the upper surface of the anti-adhesion resin 11 on the surface of 0 and sent to the winders 4 and 5, while the cutter 9 is moved along the groove 12 formed in the fixed die 10 to move the rubber. The sheet W is cut.

In another rubber sheet cutting device, a cutter is directly run on the upper surface of the take-up conveyor to cut the rubber sheet.

[0005]

Among such conventional rubber sheet cutting devices, the one in which the fixed die 10 is installed above the take-up conveyor 3 and the cutter 9 runs along the groove 12 for cutting, As shown in an enlarged view in FIG. 5, since the cut rubber sheet W is thin, has no strength, and has adhesiveness, the tip of the trailing rubber sheet W2 is cut into the groove 12 by the cutter 9. However, there is a problem in that it cannot get over the upper surface of the fixed die 10 and be sent to the rewinding winder 4, (5) due to being caught or caught.

Even if the trailing edge of the leading rubber sheet W1 is caught in the groove 12 of the fixed die 10, the winding force of the winders 4 and 5 acts to peel it off and wind it up. There is no problem.

Further, in the case where the rubber sheet is cut by running the cutter directly along the upper surface of the take-up conveyor, there is no problem of feeding the rubber sheet on the trailing side by the take-up conveyor, but it is possible to cut the rubber sheet At that time, the cutter may contact the conveyor belt, which shortens the life of the conveyor belt.

The present invention has been made in view of the above problems of the prior art. Even if the rubber sheet has a strong adhesiveness, the rubber sheet on the trailing side after cutting can be smoothly conveyed, An object of the present invention is to provide a rubber sheet cutting device that does not adversely affect the life of the take-up conveyor.

[0009]

In order to solve the above problems, the rubber sheet cutting device of the present invention has a cutter constituted by a fixed blade and a rotary blade installed upstream of a rubber sheet winder, It is characterized in that the fixed blade of the cutter is provided with a peeling mechanism for peeling off the tip of the rubber sheet attached at the time of cutting.

The rubber sheet cutting device of the present invention is
The peeling mechanism of the first invention is configured by a jet air device for injecting air.

[0011]

According to this rubber sheet cutting device, the rubber sheet is cut by the cutter composed of the fixed blade and the rotary blade, and the tip of the peeling mechanism provided on the fixed blade is made of resin for preventing adhesion. It is designed to be peeled off with a pusher coated with, so that the rubber sheet attached to the fixed blade can be forcibly peeled off and sent to the winder.

According to this rubber sheet cutting device,
The peeling mechanism is composed of a jet air device that injects air, which is installed on the fixed blade to inject air toward the attached rubber sheet, and the air sheet is forcibly pulled by the rubber sheet. It can be peeled off and sent to the winder.

[0013]

Embodiments of the present invention will be described in detail below with reference to the drawings. 1 to 3 relate to an embodiment of a rubber sheet cutting device of the present invention, FIG. 1 is a schematic perspective view, FIG. 2 is an operation explanatory diagram, and FIG. 3 is a schematic configuration diagram shown together with a winding device.

This rubber sheet cutting device 20 is, as shown in FIG. 3, on the upstream side of the winding machine 4 and also on the winding conveyor 3.
The rubber sheet W, which is installed considerably above the sheet, is continuously cut from the calender line before being cooled by the cooling roll 1 and then sent to the take-up conveyor 3 via the guide roll 2.

The rubber sheet cutting device 20 is provided with a cutter 21 composed of a shear, and has a fixed blade 22 which is horizontally projected and installed, and a rotary blade 24 which is attached to a rotary drum 23 and is driven to rotate. The fixed blade 22 and the rotary blade 24 are wider than the width of the rubber sheet W fed from the calender line.

As shown in FIG. 3, a guide plate 25 is provided between the guide roll 2 and the fixed blade 22 to prevent the rubber sheet W from coming into contact with the fixed blade 22 in a normal winding state. In order to prevent the adhesion of the rubber sheet W on the surface, a non-adhesive rubber or the like or an anti-adhesive resin 26 such as polyfluoroethylene fiber is coated.

A pusher device 28 is provided on the fixed blade 22 as a peeling mechanism 27 for peeling off the rubber sheet W adhering to the fixed blade 22 of the rubber sheet W when the cutter 21 cuts it.

As shown in FIG. 1, the pusher device 28 is provided with a pusher 29 having a sharp tip that reciprocates along the upper surface of the fixed blade 22, and both end portions of the pusher 29 are guided to guide the reciprocating motion. It projects downward and slides along the side surface of the fixed blade 22.

A rod 32 of a fluid pressure cylinder 31 fixed to a mounting base 30 of the fixed blade 22 is connected to the back of the pusher 29, and the pusher 29 is moved forward of the fixed blade 22 by supplying a working fluid such as air. You can stick out up to.

In order to prevent the rubber sheet W from adhering to the tip end surface of the pusher 29, a non-adhesive rubber 33 or an anti-adhesive resin 33 such as polyfluoroethylene fiber is coated.

Next, the operation of the rubber sheet cutting device 20 thus constructed will be described with reference to FIG. First, in a normal winding state, the rubber sheet W continuously fed from the calender line passes through the cooling roll 1 and the guide roll 2, and then winds while sliding on the adhesion preventing resin 26 on the surface of the guide plate 25. It is supplied onto the conveyor 3 and is wound up with the liner sheet 6 on the winder 4 on the downstream side (see FIG. 2A).

By providing such a guide plate 25, the fixed blade 22 of the cutter 21 installed between the guide roll 2 and the take-up conveyor 3 is prevented from interfering with the rubber sheet W, and the cutter is also provided. 21 rotary blades 2
The interference between the rubber sheet W and the rubber sheet W is prevented by rotating the rotary drum 23 and retracting the position of the rotary blade 24 upward.

When the rubber sheet W having a predetermined length is wound around the winder 4 in this manner, another winder 5 (see FIG. 5) is used.
The rubber sheet W is cut for rewinding.

The cutter 21 cuts the rubber sheet W.
It is performed by rotating the rotary drum 23 of the fixed blade 22
And the rotary blade 24 cuts the rubber sheet W (see FIG. 2).
(See (b)). During the cutting of the rubber sheet W, the fixed blade 22 and the rotary blade 24 bite into the rubber sheet W, and the trailing end of the cut leading side rubber sheet W1 and the leading end of the trailing side rubber sheet W2 are cut. Although the rubber sheet W1 on the leading side is wound by the winder 4 due to the adhesiveness and the like, the rubber sheet W1 on the leading side is wound by the winder 4, so that the rotary blade 24 may rotate. Is peeled off and wound up.

However, the trailing rubber sheet W2 attached to the fixed blade 22 is not peeled off and cannot be rewound as it is.

Therefore, the working fluid is supplied to the fluid pressure cylinder 31 of the pusher device 28 constituting the peeling mechanism 27 to extend the rod 32, and the pusher 29 is projected and attached along the upper surface of the fixed blade 22. Peel off the leading edge of the rubber sheet W2 on the trailing side.

In this case, since the tip end surface of the pusher 29 is coated with the adhesive prevention resin 33, the pusher 29 can be peeled off smoothly without sticking to the rubber sheet W2.

According to such a rubber sheet cutting device 20, the cutter 2 composed of the fixed blade 22 and the rotary blade 24 is used.
It is possible to surely cut by 1 and to easily peel off the trailing rubber sheet W2 adhered by the pusher device 28 constituting the peeling mechanism 27, and convey it on the winding conveyor 3 to wind it. The replacement can be reliably performed.

Next, another embodiment of the invention will be described with reference to the schematic perspective view shown in FIG. In this rubber sheet cutting device 40, the peeling mechanism 27 is composed of a jet air device 41, and an air header 42 having a width substantially equal to the width of the fixed blade 22 is attached to the upper surface of the fixed blade 22 in parallel with the fixed blade 22. ing. This air header 4
2, a plurality of nozzles 43 are attached to the tip of the fixed blade 22 at regular intervals, and an air supply pipe 44 is attached to the center of the back part to supply air from an air supply source (not shown).

Since the other structure is the same as that of the above-described embodiment of the present invention, the same symbols are given to the same portions and the description thereof will be omitted.

The rubber sheet cutting device 4 thus constructed
Also in 0, when the rubber sheet W is cut, the tip end of the trailing-side rubber sheet W2 attached to the fixed blade 22 is blown from the nozzle 43 onto the rubber sheet W2.
Can be peeled off.

As a result, the rubber sheet W can be conveyed by the take-up conveyor 3 and reliably rewound.

The present invention is not limited to the above-described embodiments, and each constituent element may be modified within the scope of the invention.

[0034]

According to the rubber sheet cutting apparatus of the present invention as specifically described above with reference to the embodiment, the rubber sheet is cut by the cutter composed of the fixed blade and the rotary blade. Since the peeling mechanism provided on the fixed blade is used for peeling, the rubber sheet attached to the fixed blade can be forcibly peeled off and conveyed by the take-up conveyor to be sent to the winder. It can be surely cut and smoothly rewound.

Further, according to the rubber sheet cutting apparatus of the present invention, the peeling mechanism is composed of a jet air apparatus for injecting air, which is installed on the fixed blade to inject air toward the attached rubber sheet. As a result, the rubber sheet can be forcibly peeled off by the air injection and conveyed by the take-up conveyor to be sent to the winder, and the rubber sheet can be reliably cut and smoothly rewound. it can.

Furthermore, according to these rubber sheet cutting devices, the conveyor belt of the take-up conveyor is not damaged during cutting and the service life is not shortened.

[Brief description of drawings]

FIG. 1 is a schematic perspective view of an embodiment of a rubber sheet cutting device of the present invention.

FIG. 2 is an operation explanatory view according to an embodiment of the rubber sheet cutting device of the present invention.

FIG. 3 is a schematic configuration diagram showing together with a winding device according to an embodiment of the rubber sheet cutting device of the present invention.

FIG. 4 is a schematic perspective view and an operation explanatory view according to an embodiment of a rubber sheet cutting device of another invention.

FIG. 5 is a schematic configuration diagram including a partially enlarged view showing a conventional rubber sheet cutting device together with a winding device.

[Explanation of symbols]

 1 Cooling Roll 2 Guide Roll 3 Winding Conveyor 4,5 Winding Machine 6,7 Liner Sheet 20 Rubber Sheet Cutting Device 21 Cutter 22 Fixed Blade 23 Rotating Drum 24 Rotating Blade 25 Guide Plate 26 Adhesion Prevention Resin 27 Peeling Mechanism 28 Pusher device 29 Pusher 30 Mounting base 31 Fluid pressure cylinder 32 Rod 33 Adhesion prevention resin 40 Rubber sheet cutting device 41 Jet air device 42 Air header 43 Nozzle 44 Air supply pipe W Rubber sheet W1 Leading rubber sheet W2 Trailing side Rubber sheet

Claims (2)

[Claims] 1. A cutter comprising a fixed blade and a rotary blade is installed upstream of a rubber sheet winder, and a peeling mechanism for peeling off the tip of the rubber sheet attached to the fixed blade of the cutter at the time of cutting is provided. A rubber sheet cutting device characterized in that 2. The rubber sheet cutting device according to claim 1, wherein the peeling mechanism is composed of a jet air device for injecting air.