JPH044994A - Continuous compacting equipment - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION "Field of Industrial Application" This invention relates to an improvement of a continuous pressing device called a roll type double belt press.

``Conventional technology'' Used for compression molding reinforcing materials such as paper, cloth, and glass fiber impregnated with liquid thermosetting resin, or laminated sheets or films of thermoplastic resin. A continuous pressing device called a roll type double belt press is known which is suitable for this purpose.

FIG. 7 and FIG. 8 show an example of this type of continuous pressurizing device disclosed in Japanese Patent Application Laid-Open No. 61-242799.

The continuous pressurizing device of this example passes the compressed object 3 sandwiched between a pair of upper and lower conveyor belts 1.2 such as steel belts between the upper and lower pressurizing devices. 3 can be pressure molded.

Among the upper and lower pressurizing devices, the lower pressurizing device includes a base-like structure 4 provided in a fixed state, and this structure 4
The upper pressurizing device includes a structure 6 that is supported so as to be movable up and down, and a large number of rolls 7 that revolve around the structure 6. It is configured. Note that a horizontal surface 4a is formed on the upper surface of the structure 4, and a horizontal surface 6a is formed on the lower surface of the structure 6.
A is formed and a conveyor belt l is formed with a structure 4.6.

While pressing 2 from above and below, rolls 5..., 7...
By moving around the compressed material 3, the compressed material 3 can be pressure-molded.

"Problem to be Solved by the Invention" The continuous pressurizing device of the conventional structure reduces the reaction force of the press load in order to avoid an increase in the amount of deflection of the rolls 5.7 in response to an increase in the load on the object 3 to be compressed. Horizontal surface 4 of structures 4, 6
It has a structure that can be received by rolls 7 and 6.
... rolls between the conveyor belt 1 and the load body 6, and the rolls 5... roll between the conveyor belt 2 and the load body 4.

When press-molding the object 3 to be compressed using the continuous pressurizing device having the above structure, it is necessary to control the temperature of the object 3 to be compressed. In the structure in which the compressed objects 3 are rolled, the temperature of the compressed objects 3 is mainly caused by the heat transferred from the conveyor belt 1.2 to the compressed objects 3 by thermal conduction via the rolls 5..., 7... It is assumed that this will be determined.

In this respect, in the continuous pressurizing device having the above structure, the roll 5
, 7 . . . and the conveyor belt 1.2 is a line contact, so that the heat transfer rate becomes low and there is a problem in that fine temperature control of the compressed object 3 is difficult.

In addition, in the above-mentioned continuous pressure device, since a large number of rolls 5.7 orbit around the load body 4.6, the number of rolls that are not involved in actual pressure forming tends to increase, and the equipment is reduced accordingly. There were complications.

Furthermore, as shown in FIG.
．． 2 and the object to be compressed 3, if the rolls 5 and 7 are bent, there is a problem that the entire object to be compressed 3 is not evenly pressurized.

In addition, as a modification of this type of continuous pressure device, as shown in FIG. 9, a plurality of small rollers 8 are arranged in the width direction of the conveyor belt 1.2 so as to sandwich the upper and lower sides of the conveyor healds 1, 2.
Devices are known in which the movement is driven by a conveyor belt 1.2.

The continuous pressing device of this structure has a structure in which the conveying belt 1.2 is pressed by a plurality of short rollers 8, so there are no problems with the continuous pressing device shown in FIGS. 7 and 8. The problem of non-uniform compressive force caused by the deflection of the rolls 5 and 7 does not occur, and the conveyor belt 1.2 is characterized by being able to be pressurized uniformly in the width direction.

However, in a device with this structure, since the outer diameter of the rollers 8 is small, the conveyor belt 1.
When the rollers 8... are pressed against the conveyor belt 1.2 with the structure 4.2 sandwiched between them, the rollers 8... that roll while contacting the horizontal surfaces 4a, 6a of the structure 4.6 move against the conveyor belt. 1.2
Since the conveyor belts I.2 may be held in a staggered manner from above and below, there is a risk of deforming the conveyor belt I2 into a meandering state, and if the pressing force is increased, there is a risk of damaging the conveyor belt I.2.

The present invention has been made to solve the above problems, and it is possible to easily control the temperature of the material to be compressed, and
It is an object of the present invention to provide a continuous pressurizing device that can significantly reduce the number of rolls compared to conventional moving roll type devices, has a simplified structure, and is easy to maintain.

“Means for Solving the Problem J In order to solve the problem, the invention stated in claim 1,
In a continuous pressing device that presses and forms an object to be compressed, which is interposed between a pair of upper and lower conveyor belts, from above and below via the upper and lower conveyor belts, the upper conveyor belt and the lower conveyor belt A structure is provided below the conveyor belt and is spaced apart from the conveyor belt, and at least one of the upper and lower structures is supported vertically movably, and the conveyor belt of each structure is provided.
・On the side surface, a plurality of press rolls whose respective center axes are oriented in the width direction of the conveyor belt are spaced apart from each other by a predetermined distance, and supported individually and rotatably by support bearings attached to the structure. , between the press roll and the structure supporting it, a plurality of support rolls shorter than the press roll are individually in contact with the press roll in a parallel state, and are lined up in the length direction of the press roll. It is supported by support bearings.

"Operation" The press roll that presses the object to be compressed is supported by support rolls, and a plurality of support rolls are arranged in the length direction of the press roll, so the amount of deflection of the press roll during pressurization is reduced. The object to be compressed is uniformly pressurized. Furthermore, the temperature of the object to be compressed is adjusted by blowing out hot air or cold air from the air holes formed in the structure. Furthermore, the hot or cold air blown from the ventilation holes is blown directly onto the conveyor belt through the gap between the press rolls, heating or cooling the object to be compressed, so the temperature of the object to be compressed can be efficiently adjusted. be done.

Embodiment FIGS. 1 to 4 show an embodiment of the present invention, and the continuous pressurizing device of this embodiment consists of a conveyor belt 11 that moves horizontally while sandwiching an object 10 from above and below. 12 is provided so that the compressed object IO can be continuously molded by applying pressure from above and below.

In the apparatus of this embodiment, three base-like structures 14 are installed on a lower support surface 13 such as a base below the conveyor healds 11 and 12 along the moving direction of the conveyor belts 11 and 12. and above the conveyor belt 11.12,
Three base-like structures 16 supported by the upper support surface I5
are suspended so as to face the three structures 14 below.

The structure I6 is vertically movably suspended from the upper support surface I5 by a support member 17 incorporating a spring member or the like. Note that since this support member 17 supports the heavy structure 16 in a vertically movable manner, it is equipped with a support such as a support rod that mainly supports the load of the structure I6. , is omitted in the drawing.

A press roll 2o and a support roll 21, which will be described below, are provided on the upper surface of the structure 14 and the bottom surface of the structure 16. First, as shown in FIG. 3, the press roll 20 is slightly longer than the width of the conveyor belt 11, 12, and is conveyed by support bearings 22 attached to the top surface of the structure 14 and the bottom surface of the structure 16. belt 11
．． 12, and is rotatably supported around the circumference thereof. Note that a plurality of press rolls 2o provided in each of the structures 14 and 16 are connected to the conveyor belt 1.
1.12, and are arranged with a predetermined gap between each other. The width of this gap may be such that it does not become an obstacle when forming the blow holes 25 in the structure 14.16, which will be described later.
If the outer diameter of o is 30 mm, the width of the gap is 40 mm.
Set to a certain degree.

Moreover, between the upper surface of the structure I4 and the press roll 20, and between the bottom surface of the structure 16 and the press roll 20, support bearings 23 attached to the structure 14 or the structure 16 are provided. A plurality of support rolls 21 are each rotatably provided. These support roles 2! A plurality of these have a length of about a fraction to several tenths of the press roll 20, and are supported in plural on the same straight line at predetermined intervals in the length direction of the press roll 20. As shown, a pair of left and right support rolls 21.degree. 2I are provided in contact with the surface of the press roll 20 opposite to the surface on the conveyor belt side.

With the above structure, the press roll 20 and the support roll 21 move up and down together as the structure 16 moves up and down.

In addition, a portion of the upper surface of the structure I4 and a portion of the bottom surface of the structure 16, between the press rolls 20 and 20 adjacent to each other along the length direction of the conveyor belts II and 12, are provided with an air blower. A hole 25 is opened as shown in FIG. 4 and is connected to a source of hot or cold air in the illustrated passage provided outside the structure 14.16.

Next, a case will be described in which the object to be compressed 3 is pressure-molded using the continuous pressure device configured as described above.

In the continuous pressurizing device having the above structure, the compressed material l is placed between the conveyor belts 11 and 12, as in the conventionally structured continuous pressurizing device.
The O is transported in a state where it is sandwiched, and during this transport, pressure molding processing is performed using upper and lower pressure devices.

This pressure molding process is performed by lowering each structure 16 by adjusting each support member 17 of the upper structure 16. This is done by sandwiching the conveyor belts 11 and 12 from above and below with the press rolls 20 of the body 16, as shown in FIGS. 2 and 3. Further, the pressure force can be adjusted by adjusting the vertical position of the structure 16 using the support member 17. Therefore, in this embodiment, since three structures I6 are provided, each of the three structures 16 can be press-molded at a desired pressure.

When press rolls 20 sandwich the conveyor belts 11, 12 from above and below to pressurize the object to be compressed, the support bearings 22 support both ends of the press rolls 20, so the axis of the press rolls 20 Although parts other than the support part try to bend, this bending deformation is prevented by the support roll 21. Therefore, even if the pressing force is increased, the press roll 2
The amount of deflection at 0 can be controlled to a minute value within the allowable range. Therefore, the object 10 to be compressed can be uniformly pressurized. Furthermore, when press-forming the compressed object IO, three vertically movable structures 16 equipped with press rolls 20 are provided.
The pressing force can be adjusted appropriately for each of the three structures 16.

In addition, when press-molding the compressed object 10, it becomes necessary to adjust the molding temperature, but this requires adjusting the temperature of the air blow holes 25 formed in each structure 14, 16 to a predetermined temperature. The heated or cooled air is blown out as shown in FIG. 4, for example. Here, the hot air or cold air blown out from the blow holes 25... is blown directly onto the conveyor belt 11.12, so that the object 10 to be compressed can be directly heated or cooled via the conveyor belt 11.12. Therefore, the temperature of the object 10 to be compressed can be controlled much more efficiently than heating by line contact via press rolls as in the conventional apparatus. Therefore, the object 10 to be compressed can be heated to a desired temperature and molded under desired pressurizing conditions.

Furthermore, although the deflection of the press roll 20 is prevented by a plurality of small support rolls 21..., the conveyor belt 11,
What presses the conveyor belt 11.
There is also little risk of damaging the surface of 12.

5 and 6 show examples of the planar arrangement of the support rolls 21. The support rolls 21 may be arranged in a staggered manner as shown in FIG. 5, or in a staggered manner as shown in FIG. They may be arranged in left and right alignment.

In addition, in the above embodiment, the structures 14 and 16 are each made up of three
Structure 14.16
Of course, one or more of each may be provided as desired.

"Effects of the Invention" As explained above, the present invention has a configuration in which the press roll is supported by a plurality of support rolls provided in the length direction of the press roll, so that the amount of deflection of the press roll during pressurization can be reduced. Therefore, the object to be compressed can be pressure-molded uniformly.

In addition, in conventional equipment, it is necessary to provide a large number of rolls that orbit around the structure, and rolls that do not directly contribute to pressure forming while circulating are also required, resulting in an extremely large number of rolls. However, in the device of the present invention, all of the press rolls provided can be used for forming, so the number of press rolls can be reduced compared to conventional devices, and the structure can be significantly simplified and maintenance can be reduced. becomes easier.

On the other hand, the conveyor belt holding the compressed object can be directly heated and cooled by blowing out hot or cold air from the ventilation holes formed in the structure, so the temperature of the compressed object can be adjusted to the desired temperature. The material to be compressed can be pressure-molded at a desired temperature.

[Brief explanation of the drawing]

1 to 4 show an embodiment of the present invention,
Figure 1 is a schematic side view, Figure 2 is an enlarged side view of the main parts, Figure 3 is an enlarged front view of the main parts, Figure 4 is an enlarged side view of the ventilation holes, and Figure 5 is the support roll. FIG. 6 is a plan view showing another example of the arrangement of support rolls, and FIGS. 7 and 8 show an example of a conventional device.
Figure 7 is a side view, Figure 8 is a partially enlarged front view, and Figure 9 is a partially enlarged front view.
The figure is a partially enlarged front view of another example of the conventional device. IO...Object to be compressed, 11.12...Transport belt, 1
4.16... Structure, 17... Support member, 20...
・Press roll, 21 ・・Support roll, 22.23
...Support bearing, 25...Blower hole. Applicant Mitsubishi Rayon Engineering Co., Ltd. Figure 4 Figure 5 Figure 6 Figure 1 Figure 2 Figure 3 Figure 7 Figure 8 Figure 9

Claims (2)

[Claims] (1) In a continuous pressing device that presses and forms a compressed object interposed between a pair of upper and lower conveyor belts from above and below via the upper and lower conveyor belts, the upper and lower sides of the upper conveyor belt A structure is provided below the conveyor belt and separated from the conveyor belt, and at least one of the upper and lower structures is supported to be movable up and down. A plurality of press rolls with their respective center axes oriented in the width direction are spaced apart from each other by a predetermined distance and are individually rotatably supported by support bearings attached to the structure, while the press rolls and the support rolls are A plurality of support rolls, each of which is shorter than the press roll, is arranged between the support roll and the structure, each of which is in parallel contact with the press roll, and is aligned in the length direction of the press roll and supported by the structure by support bearings. A continuous pressurizing device characterized by: (2) Air holes that open in the gaps between a plurality of press rolls arranged in parallel in the length direction of the conveyor belt are formed on the surface of the structure on the side of the conveyor belt, and the air holes supply hot air or cold air. 2. The continuous pressurizing device according to claim 1, wherein the continuous pressurizing device is connected to a source.