JPH04202873A - Crushing and pressing roll - Google Patents

Abstract

PURPOSE:To crush and press a web of waste paper by placing a pair of rolls in such a manner as to form mutually engaging wavy grooves on the outer circumferences, making the engaging gap between the rolls to be adjustable and introducing a web between the rolls. CONSTITUTION:Wavy grooves 15a, 16a are formed on the outer circumferences of a pair of rolls 15,16 and the rolls are placed in a state to engage the grooves with each other. The gap between the rolls is made to be adjustable with a screw and a spring. A sheet web 13 is crushed and pressed by passing through the gap between the rolls.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a crushing and pressing roll machine for maintaining the confidentiality of recovered paper in an office waste paper collection system and reducing high piles.

(Prior Art) Conventionally, when paper from an office is no longer needed, it is shredded in a shredder or incinerated to maintain confidentiality, depending on the content of the document.

(Problems to be Solved by the Invention) Cutting documents using a shredder with a cutter has the following problems when waste paper is considered as a recycled paper resource.

(1) Since paper is cut into small pieces using a cutter, the fibers that make up the paper are cut, and when recycled into paper, the fiber length becomes shorter and strength decreases.

(2) Paper shredded into small pieces by a shredder becomes bulky and requires compressed packaging to prevent it from scattering during handling, and it is time-consuming and expensive to transport due to its bulk, so it is excluded from collection. There is.

The present invention makes it possible to maintain confidentiality by crushing without cutting with a shredder and compressing at the same time as the crushing, and also reduces bulk, does not shorten fiber length by not cutting fibers, and is suitable for recycled paper. It is an object of the present invention to provide a web crushing press roll machine that is effective as a web crushing roll machine.

(Means for Solving the Problems) Therefore, the present invention forms wave-shaped grooves on the outer peripheral surfaces of a pair of rolls, arranges them so that they mesh with each other, and adjusts and pressurizes the anastomosis gap between both rolls. This system is equipped with an adjustable pressure mechanism, and the web is sent between the rolls to crush and compress the web, and this is used as a means to solve the problem.

(Function) Along with forming wave-shaped grooves on the outer peripheral surface of the pair of rolls,
A sheet-like web is passed between these rolls, which are arranged so as to mesh with each other, and as the web is bitten, it is sandwiched between the rolls, further stretched along the corrugated grooves, and crushed. At the center of the meshing point of the rolls, the web is then compressed by the pressure of the rolls to reduce bulk and densify the crushed web.

(Example) The present invention will be described below with reference to the embodiments shown in the drawings. Fig. 5 shows a recovered waste paper processing machine using a crushing press roll machine in an embodiment of the present invention.

The waste paper collected in FIG. 5 is placed in a waste paper collection box 10 and supplied to a waste paper processing machine. Waste paper 11 is in collection box 10
It is taken out by a take-out conveyor 12, conveyed in the form of a web 13 by a belt, and crushed by a crushing press roll 15, 16.
sent to. Water is applied to both sides of the paper through a shower nozzle 14 to add water to the paper before passing it through the rolls in order to reduce its bulk and increase its density. The crushing and pressing rolls are a pair of rolls 15゜1 with corrugated grooves formed on the outer peripheral surface on a frame F.
6 are arranged so that their waveforms mesh with each other, as shown in FIG. It is fixed on a supported arm 19 by a rotating bearing.The gap between the upper and lower crushing and pressing rolls 15 and 16 is adjusted by setting the minimum gap using a screw 21, and by setting the pressing force between the rolls using a spring 20. These constitute an adjusting pressure mechanism that adjusts and presses the meshing gap between the rolls 15 and 16.

Now, the web 13 (waste paper 11 or the state in which it is caught by the conveyor belt and flowing in a band shape) is the shower 1
After water is added in step 4, it is fed between crushing and pressing rolls 15 and 16, and the corrugated grooves 1 of the rolls are formed as shown in FIGS. 1 to 4.
5a, 16a, and some of the water is squeezed out and received by the water pan 22, and circulated by the pump 23 to the shower nozzle 14 as part of the shower water to be reused. The crushed and pressed waste paper 24 is stored in a container 25 and collected. In addition, as a method for facilitating collection, there is also a method of compression molding the waste paper 24 using a molding machine 26 shown in FIG. 6 to form a block-shaped waste paper 27.

Next, the action of crushing and compressing the web 13 will be explained with reference to FIGS. 1 to 4. First, the pair of rolls 15 and 16 have corrugated grooves 15a and 16a formed on their outer peripheral surfaces, and are arranged so as to mesh with each other, and the gap between the corrugated grooves 15a and 16a is configured to be adjustable. There is.

Here, when the sheet-like web 13 (waste paper) is passed between the rolls 15 and 16, the web 13 is
is approximately the same length as the roll width as shown in Fig. 2, but as it is bitten between the rolls 15 and 16, the line bb and C-C in Fig. 1 and the web 13 are and stretched along the corrugated grooves 15a and 16a,
From FIG. 3 to FIG. 4, the web 13 is 13a
It is cut and crushed as follows.

That is, along line CC in FIG. 1, a pair of rolls 15.
By applying an external force in the direction of reducing the gap between 16, in the wedge-shaped cross section as shown in Fig. 4,
The web 13 is compressed by the pressing force of a pair of upper and lower rolls 15, 16 to reduce its bulk, and becomes a crushed web 13a to be densified.

(Effect of the invention) Resource recovery is currently an important issue in terms of global environmental conservation, and among these, recovery of waste paper such as paper waste from office buildings is important from the perspective of resource recycling. Paper waste in Obe City is increasing at a rate that exceeds its processing capacity.

According to the present invention, since the recovered waste paper is subjected to crushing and pressing, the fiber length will not be shortened unlike in the case of cutting with a cutter, without impairing the effectiveness of maintaining the confidentiality of documents, and it can be used as a resource. At the same time, it is possible to maintain the value of the product, solve the problem of bulk due to squeezing, reduce the labor of collection, and reduce transportation costs.

[Brief explanation of the drawing]

FIG. 1 is a side view showing the meshing state of upper and lower crushing press rolls according to an embodiment of the present invention, FIG. 2 is a sectional view taken along line a-a in FIG. 1, and FIG. B-line sectional view, Figure 4 is the 1st
5 is a side view of a recovered waste paper processing machine equipped with a crushing and pressing roll machine showing an embodiment of the present invention, and FIG. 6 is a further compression treatment of the waste paper squeezed in FIG. 5. FIG. 2 is a perspective view of a molding machine. Explanation of the main parts of the figure 11 - Waste paper 13 - Web 13a - Crushed web 14 - Shower 15, 16 - Crushing press rolls 15a, 16a Wave-shaped groove 17 - Frame 18 - Pivot 19 - Arm 20 - Spring 21 - Screw 24 - Waste paper 25 - Container

Claims (1)

[Claims] Along with forming wave-shaped grooves on the outer peripheral surface of the pair of rolls,
A crushing and compressing roll machine characterized in that the rolls are arranged so as to mesh with each other and are provided with an adjusting pressure mechanism capable of adjusting and applying pressure to the meshing gap between both rolls, and the web is sent between the rolls for crushing and compressing. .