JPS63278811A - Continuously pressurizing device - Google Patents

Abstract

PURPOSE:To surely prevent the stain on the useful surface of a transfer belt due to the leakage of the fluid for sealing by a method in which in the front and rear positions in the belt transferring direction near each pressurized chambers being mutually opposite, rotating rolls are provided so as to be brought in close contact with the pressurized chamber contacting surface of each transfer belt, and soft linear members which are in close contact with both edges of the under surface of the above transfer belt and send said belt together, are provided. CONSTITUTION:In front and rear positions in the belt transferring direction near each pressu rized chamber 4a, 4b, rotating rolls 9a, 9b and 10a, 10b for respectively obstructing fluid, are provided on the surface of the pressurized chamber contacting side of each transfer belts 2a, 2b so as to be brought in close contact mutually. The length dimension of these rotating rolls 9a, 9b and 10a, 10b are formed to be larger than the width dimension of the transfer belts 2a, 2b. On both edges of the under surface of the above transfer belt 2a (the surface opposite to the contacting surface of the pressurized chamber 4a), the endless V-belts (linear members) 13a, 13b for damming are provided so as to send the belt 2a together in close contact state with the moving transfer belt 2a. The sealing fluid fed to the peripheral edge 8a of each pressurized chamber-housing 8, leaks out little by little, while said fluid adheres to the pressurized chamber contacting surface of the transfer belts 2a, 2b, but it is dammed by each rotating roll 9a, 9b and 10a, 10b. Further when the fluid flows along the under surface of the transfer belt 2a, it is dammed by the linear members 13a, 13b, and is caused to flow downward.

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention is applicable to reinforcing materials such as paper, cloth, glass fiber, etc. impregnated with liquid thermosetting resin, or thermoplastic resin sheets or films. This invention relates to a continuous pressurizing device suitable for use in compression molding a laminated product.

[Prior Art] Ganjin Motoyama previously proposed Japanese Patent Application No. 1983-56424 as a continuous pressurizing device of this type. In this method, a fixed pressurizing chamber is provided on each back side (the side that does not come into contact with the compressed object) of a pair of conveyor belts that sandwich and convey the compressed object, and the pressurizing fluid is evenly distributed in each of these pressurizing chambers. At the same time, a sealing fluid is supplied and filled between the peripheral edge of each fixed pressurizing chamber and each conveyor belt to confine each pressurizing fluid in each fixed pressurizing chamber, and these pressurizing fluids are The object to be compressed is pressurized by the compressor.

According to this proposal, a gap is formed by the sealing fluid between the peripheral edge of each pressurizing chamber and each conveyor belt, and each conveyor belt is transferred without contacting its respective fixed pressurizing chamber. Excessive frictional force is not applied to the conveyor belt or each pressurizing chamber. Therefore, the conveyor belt can maintain a good polished surface for a long period of time, and extremely excellent pressure processing is possible.

[Problems to be Solved by the Invention] By the way, in order to further improve the performance of the continuous pressurizing device, it has been found that the following points need to be improved.

That is, in the continuous pressurizing device, in order to perform good pressurization without leaking the pressurizing fluid supplied to each pressurizing chamber, the periphery of each fixed pressurizing chamber and the respective conveyance A sealing fluid is supplied and filled between the belt and the belt, so that each pressurizing fluid is confined in each fixed pressurizing chamber. However, since the conveyor belt is constantly moving,
The sealing fluid supplied and filled between the peripheral edge of each pressurizing chamber and each conveyor belt inevitably adheres to the contact surface of each pressurizing chamber of the conveyor belt and leaks out little by little. . Furthermore, in some cases, pressurizing fluid may also leak out, albeit in a small amount. In this way, the fluid that leaks out in a very small amount increases to a non-negligible amount over time, and flows from both edges of the moving surface of each conveyor belt on the pressure chamber contact side to the opposite side of each conveyor belt. It begins to flow down as if conveyed. Since the opposite surface is an active surface that pressurizes the product (compressed object), contamination by fluid must be avoided.

Therefore, in conventional equipment, a sealing material is installed outside the pressurizing chamber to dam the pressurized fluid, and by strongly pressing the sealing material against the belt surface and damming it, the pressurized fluid is transferred to the conveyor belt's active side. This prevented the information from being transmitted to the public. However, this method applies excessive force to the belt and causes foreign matter such as dust to get caught in the belt, causing damage to the belt or shortening its lifespan. Currently, measures to prevent pollution are desired.

The present invention has been made in view of the above circumstances, and provides a continuous pressurizing device that can reliably prevent contamination of the conveyor belt's active surface by sealing fluid (and pressurizing fluid) that occurs over time. The purpose is to

[Means for Solving the Problems] The present invention provides rotatable and flexible rolls having a length larger than the width of the conveyor belt at front and rear positions in the belt conveyance direction near each of the pressure chambers facing each other. The length direction thereof is perpendicular or almost perpendicular to the belt conveyance direction, and the belt is provided so as to be in close contact with the pressurizing chamber abutting surface of each conveyor belt. It is characterized by a flexible linear body for blocking fluid that closely adheres to and follows both edges of the surface, and the roll and flexible linear body are driven by the conveyor belt to adjust the belt speed and speed. It is preferable that it rotates and runs without any difference.

[Function] According to the above configuration, the sealing fluid (and pressurizing fluid) that adheres to the pressurizing chamber contact surface of each conveyor belt and leaks out little by little is transferred to the belt conveyor of each pressurizing chamber. The fluid is dammed up by the rotating rolls located at the front and rear of the direction and in close contact with the pressure chamber contacting side of each conveyor belt, and the increased fluid is dammed by each rotating roll and projects outward from the conveyor belt of the rotating rolls. The fluid flows down from both ends of the conveyor belt above, and flows further along the surface on the pressurizing side of the object to be pressed, and is blocked by the flexible linear body that closely adheres to the belt and runs with it, and flows down. In this way, the leaked fluid is removed from the conveyor belt without entering the useful surface (the pressurizing surface of the compressed object) of the conveyor belt, thereby preventing problems such as product contamination. Furthermore, when the roll rotates without a speed difference from the belt speed, there is an advantage that even if a foreign object is bitten, the damage will not spread greatly in the conveying direction of the belt.

Almost the same thing can be said about flexible linear bodies.

[Example 1] Hereinafter, a first example of the present invention will be described with reference to the drawings.

1 and 2 are diagrams showing the configuration of a continuous pressurizing device according to an embodiment of the present invention. FIG. 1 is a side sectional view showing the overall configuration, and FIG. 2 is a longitudinal sectional view of the main part of the device. It is a front view.

In the figure, I a, la and l b, 1 b
are drums arranged vertically with a fixed gap between them. Endless steel belts (conveyor belts) 2a and 2b are tensioned around the two sets of drums la and lb, and are driven to rotate vertically at a constant speed. The object 3 to be compressed is sandwiched between these endless steel belts 2a, 2b and conveyed.

A fixed pressurizing chamber 4a,
The openings of 4b are opposite to each other. Each fixed pressure chamber 4aq
4b is a pressurizing chamber having a rectangular horizontal cross section, and the endless steel belt 2 is heated by pressurizing fluid 6 supplied from a pressurized fluid supply source (not shown) via fluid supply pipes 5a and 5b.
As 2b, the object 3 to be compressed is pressurized with uniform surface pressure. The pressurizing fluid 6 in each pressurizing chamber 4a, 4b flows out from fluid outflow pipes 7a, 7b whose flow rate is narrower than that of the fluid supply pipes 5ax and 5b, and these fluid supply pipes 5a.

The internal pressure of each pressurizing chamber 4a, 4b is determined by the flow rate difference between 5b and the fluid outflow pipes 7m, 7b and the fluid supply pressure.

A sealing fluid is supplied to the groove-shaped peripheral edge part 8a of the housing 8 constituting each pressurizing chamber 4a14b, and each peripheral edge part 8a is coated with a thin film (0,1 μm) of the sealing fluid.
~0.1 av) to each endless steel belt 2a12b.

Rotating rolls 9a and 9 for fluid blocking are provided at front and rear positions in the belt conveyance direction near each of the pressurizing chambers 4a and 4b, respectively.
b, 10a, and lOb are provided so as to be in close contact with the surface of each conveyor belt 2a, 2b on the pressure chamber contact side.

As these rotating rolls 9a, 9b, lQa, and fob, flexible rolls made of materials such as smooth rubber, soft plastic, or sponge-like or fibrous rubber or plastic are used. Pressurized chambers 4a, 4b
Preferably, the front rolls 9a and 10a have smooth surfaces, and the rear rolls 9b and IQb have spongy or fibrous surfaces. These rotating rolls 9a
, 9b, lea, and lOb are formed such that their lengths are larger than the widths of the conveyor belts 2a, 2b, and both ends thereof protrude outside the edges of the conveyor belts 2a, 2b. Regarding the conveyor belt 2b side,
The lengths of the rolls 10a and 1Ob can be made equal to or slightly shorter than the width of the belt 2b. Further, these rotating rolls 9a, 9b and lOa, 10b are pressed by springs 11 at both ends of their respective rotating shafts in order to come into close contact with the respective conveyor belts 2a, 2b. Further, the rotating rolls 9a, 9b and 1
Of the rollers 0a and 10b, small rollers 12m and 12b may be provided in close contact with rotating rollers 9b and 10b located on the upstream side of conveyance, respectively, so as to rotate synchronously.

In addition, endless V holes are provided at both edges of the lower surface of the upper conveyor belt 2a (the surface opposite to the contact surface of the pressurizing chamber 48) for damming so that the conveyor belt 2a closely follows the moving conveyor belt 2a. Belts (linear bodies) 1.3a and 13b are provided. These V-belts 13a, 13b, as shown in FIG.
In order to improve the adhesion to the conveyor belt 2a, the hooks are rotated by a plurality of rotating rollers 14, and a portion of the rotating rollers 14a and 14b at both ends serve as driving wheels. The belt 13aS13b can rotate at the same speed as the endless steel belt 2a.

In the above configuration, the linear bodies 1:(a, 13b are configured from ■belts, but they are not limited to belts, and may include rope-like members,
Various linear bodies can be used, such as a lobe-shaped member or a wire-shaped member coated with a flexible porous member.

In the above configuration, the object 3 to be compressed is held between the endless steel belts 2a and 2b, and is pressurized while being conveyed to the right in FIG. That is, each pressurizing chamber 4a,
The pressurizing fluid 6 injected into the chamber 4b pressurizes the endless steel belts 2a, 2b with a uniform surface pressure while circulating within each pressurizing chamber 4&, 4b through the flow path shown in the figure, and this force causes the pressurizing fluid 6 to pressurize the endless steel belts 2a, 2b with uniform surface pressure. The compressed material 3 is pressurized with uniform surface pressure.

At this time, in order to prevent leakage of the pressurizing fluid in each pressurizing chamber 4a, 4b, the sealing fluid supplied to the peripheral edge 8a of each pressurizing chamber housing 8 is gradually transferred to the conveyor belt 2m.
, 2b and leaks out, but the leaked fluid is dammed by rotating rolls 9a, 9b and 10a, 1Ob, which rotate at the same speed as the conveyor belts 2a, 2b. The fluid that has been dammed up and increased in volume by each rotating roll is transferred to each rotating roll 9a, 9b, and 10a.

It flows down from both ends of the conveyor belt 10b that protrude outward. Here, a part of the fluid dammed up by the upper rotating rolls 9a, 9b is transferred to the rotating rolls 9a, 9b as described above.
In some cases, the fluid does not flow down from both ends of b, but instead flows to the lower surface of the conveyor belt 2a (the surface opposite to the contact surface of the pressurizing chamber 4a: the effective surface of the conveyor belt 2a). , the linear bodies 13a, 1 are closely attached to both edges of this lower surface and follow.
It is dammed by 3b and flows down. Note that the rotating rolls 9a, 9b and 10a, 10b rotate at the same speed as the conveyor belts 2a, 2b, and the conveyor belts 2a, 2b rotate at the same speed.
There is no sliding contact between the two, so there is no risk of damaging the conveyor belts 2a, 2b, and since the linear bodies 13a, 13b also rotate at the same speed as the conveyor belt 2a, there is no risk of damaging the conveyor belt 2a.

In the above configuration, the rotating roll 9 located on the upstream side of the conveyance
Small rolls 12a and 12b were brought into close contact with b and 10b, respectively, and were provided to rotate synchronously. This is because the fluid contact portions of the rotating rolls 9b and 10b are not immediately rolled up onto the conveyor belts 2a and 2b due to their rotational directions, but after just one rotation, the fluid contact portions are wrapped around the conveyor belts 2m.

2b, so when the transport speed increases and the rotational speed of the rotating rolls 9b and 10b increases, the rotating rolls 9b and 10b carry a relatively large amount of fluid to the drum la side. This is to prevent it from being put away. Therefore, if there is no such concern, there is no particular need to provide the small rolls 12a12b.

As explained above, according to the continuous pressurizing device of the present invention,
The fluid leaked onto the conveyor belts 2a and 2b is discharged outside the conveyor belts 2a and 2b without entering the active surfaces (pressure surfaces of the pressed material) of the conveyor belts 2a and 2b, thereby preventing inconveniences such as product contamination. It never comes.

[Embodiment 2] The feature of this embodiment is that, as shown in FIG.
The linear bodies that accompany a and 2b are composed of two types and two rows of linear bodies, that is, the outer linear body (■ belt) Ha, 13b and the inner linear body 15aS15b,
The other parts are the same as those in the first embodiment.

At least the surfaces of the inner linear bodies 15a and 15b are made of a flexible porous member, and these linear bodies 15a and 15b are made of a flexible porous material.
, 15b, a diaphragm device le is placed below the infinite (orbital) orbit of
a% 16b are provided, and these linear bodies 15a, 15
If b absorbs leaked fluid, the fluid absorption capacity can be easily regenerated.

According to this embodiment, not only the same functions and effects as those of the above-mentioned embodiments can be obtained, but also the following functions that are effective even when the operation is continued for a long time.

In other words, with long-term operation, the leakage fluid becomes V
belt) 13a, passes through L3b and further transfers to the conveyor belt 2.
There is a possibility that the fluid may infiltrate toward the center of the significant surface of a, but in that case, the inner linear bodies 15a and 15b absorb the leaked fluid, so that it will not infiltrate into the center of the significant surface. . In this case, the linear bodies 15a and 15b are connected to the aperture device 16a.
Since the fluid is squeezed out by %16b and its fluid absorbing ability is immediately restored, it is possible to continue to prevent fluid from entering even during long rotations.

In addition, a flexible roll with diagonal grooves cut on both ends of the belt from the flexible linear body for damming on the surface opposite to the pressure chamber abutting surface of the conveyor belt behind the roll behind the pressure chamber ( When groove cutting rolls are installed in one or multiple stages, and these groove cutting rolls are rotated at the same speed as the conveyor belt, the leaked fluid is pumped to both ends of the belt and onto the active surface of the conveyor belt. Infiltration of fluid can be more effectively prevented.

[Effects of the Invention] As explained above, the present invention includes at least one pair of pressurizing chambers whose openings face each other, and at least one pair of conveyor belts that circulate between the facing openings. The object to be compressed, which is conveyed between the pair of conveyor belts, is continuously pressurized via the conveyor belts by pressurizing fluid supplied to each of the pressurizing chambers. In a continuous pressurizing device, there are
A rotatable and flexible roll having a length dimension larger than the width dimension of the presound conveyor belt is provided with its length direction perpendicular or almost perpendicular to the belt conveyance direction, and on the surface of each conveyor belt on the pressure chamber contact side. It is characterized by being provided so as to be in close contact with each other, and further provided with flexible linear bodies for oil removal that are in close contact with and follow along both edges of the surface of the upper conveyor belt opposite to the pressurizing chamber contact surface. It is.

Therefore, according to the present invention, the sealing fluid (and pressurizing fluid) that leaks out little by little while adhering to the pressure chamber contact surface of each conveyor belt is removed in the belt conveyance direction of each pressure chamber. It is dammed by rotating rolls located at the front and rear and in close contact with the pressure chamber contact side of each conveyor belt, and
The fluid that has been dammed up and increased in volume by each rotating roll flows down from both ends of the rotating roll that protrude outward from the conveyor belt, and on the upper conveyor belt, the fluid that has flowed is further transferred to the surface on the side that presses the compressed object. It flows down, blocked by the flexible linear body that follows. In this way, the leaked fluid is removed from the conveyor belt without entering the useful surface (the pressurizing surface of the pressed material) of the conveyor belt, thereby preventing problems such as product contamination.

Furthermore, when the roll rotates without a speed difference from the belt speed, there is an advantage that even if a foreign object is bitten, the damage will not spread greatly in the conveying direction of the belt. Almost the same thing can be said about flexible linear bodies.

[Brief explanation of drawings]

1 and 2 are diagrams showing the configuration of a continuous pressurizing device according to a first embodiment of the present invention. FIG. 1 is a side sectional view showing the overall configuration, and FIG. FIG. 3 is a longitudinal sectional view of a main part of a continuous pressurizing device according to a second embodiment of the present invention. Otori a, Ib...Drum, 2a, 2b...Endless steel belt (conveyor belt), 3...Object to be compressed, 4a, 4b...Fixed force Pressure chamber, 5a, 5b...fluid supply pipe, 6...pressurizing fluid, 7a, 7b...fluid outflow pipe, 8...housing, 8a・・・・・・Periphery of housing, 9a19b%l
ea, 1Ob-one rotation roll, 11... spring, 12a, 12b... small roll, 13a, 13b
,... V-belt [(outer) linear body, 15a
, 15b... Inner linear body, 16a, 16b.
・・・・Aperture device. Applicant Mitsubishi Rayon Engineering Co., Ltd. Figure 1 Ia-1b i Tom 7a H7bi J
4-pack 5 construction pipes 2a, 2b; *i' route
8 i How’t”>f”3
; Tei trap pressure fat's
8a: HjVn7″#Irrl*
n4a, 4b; ffl constant @lf-%
9a, 9b, IOa, fobHgJ rolls 5a, 5b; If tube +2
a, +2b; Small roll 6; For η■ pressure? Nine things 13a, l3bi v
Heert (a & 4) 14.140, 14b; m-roll loaf figure 2

Claims (5)

[Claims] (1) at least a pair of pressurized chambers with openings facing each other;
and at least a pair of conveyor belts that pass between the opposing openings and circulate, and a compressed object that is conveyed while being sandwiched between the pair of conveyor belts is delivered to each of the pressurizing chambers. In a continuous pressurizing device that continuously pressurizes via the conveyor belt with pressurizing fluid supplied, width dimensions of the conveyor belt are set at front and back positions in the belt conveyance direction near each of the opposing pressure chambers. A rotatable and flexible roll having a larger length dimension is provided so that its length direction is perpendicular or almost perpendicular to the belt conveyance direction and is in close contact with the pressure chamber contact side of each conveyor belt, and A continuous pressurizing device, characterized in that a flexible linear body for damming is provided in close contact with and following both edges of the surface of the upper conveyor belt opposite to the pressurizing chamber abutting surface. (2) Flexible linear bodies for damming are provided on the outer and inner sides of both edges of the surface opposite to the pressure chamber abutting surface of the upper conveyor belt, and the inner line 2. The continuous pressurizing device according to claim 1, wherein at least the surface of the shaped body is made of a flexible porous member. (3) The continuous pressure device according to claim 1, wherein the roll rotates with no speed difference from the belt speed. (4) The continuous pressure device according to claim 1, wherein the linear body runs with no speed difference from the belt speed. (5) The continuous pressurizing device according to claim 2, characterized in that a throttle device is provided at a position below the orbit of the inner linear body.