KR20230052303A - double belt press device - Google Patents

Abstract

The double belt press machine includes a lower belt unit 1 having a plurality of rolls 1b, a lower endless belt 1c and a lower frame 1a; and an upper belt unit 2 having a plurality of rolls 2b, an upper endless belt 2c, and an upper frame 2a, wherein the object X is conveyed and pressurized between the lower endless belt and the upper endless belt. The lower frame and the upper frame are detachably connected at at least the front end of the front end of one end and the rear end of the other end in a horizontal direction orthogonal to the transport direction of the object to be processed.

Description

double belt press device

The present invention relates to a double belt press machine.

this application claims the priority based on patent application 2020-160348 for which it applied to Japan on September 25, 2020, and uses the content here.

Recently, prepregs formed by impregnating reinforcing fibers with a resin have been used as lightweight and high-strength composite materials. For example, Patent Document 1 discloses a double belt press device for producing a prepreg in which reinforcing fibers are impregnated with a thermoplastic resin. As shown in Patent Literature 1, a double belt press device impregnates reinforcing fibers with a thermoplastic resin by driving a pair of endless belts arranged vertically and heating and pressurizing a material between these endless belts. Each of these endless belts is supported by a plurality of rolls and is driven by rotation of the rolls.

Japanese Unexamined Patent Publication No. 2014-105310

In a double belt press machine for producing prepreg, an endless belt made of metal such as stainless steel is used. It is common for such an endless belt not to be replaced, and has a thickness value of, for example, about 1 mm in order to improve durability. However, if the thickness value of the endless belt is increased to improve durability, the heat capacity of the endless belt increases. In the case of manufacturing a prepreg impregnated with a thermoplastic resin, it is necessary to raise the temperature between a pair of endless belts in order to lower the viscosity of the thermoplastic resin to an impregnable level. If the heat capacity of the endless belt is large, a large amount of energy is required to raise the temperature of the endless belt, making it difficult to devote energy to improving the production speed of the product.

The present invention has been made in view of the above problems, and an object of the present invention is to enable reduction of heat capacity of an endless belt in a double belt press apparatus, thereby improving production speed.

The present invention adopts the following configuration as a means for solving the above problems.

A double belt press apparatus according to a first aspect of the present invention includes: a lower belt unit having a plurality of rolls, a lower endless belt supported by the plurality of rolls, and a lower frame supporting the plurality of rolls; and an upper belt unit disposed above the lower belt unit and having a plurality of rolls, an upper endless belt supported by the plurality of rolls, and an upper frame supporting the plurality of rolls, wherein the lower endless belt unit is provided. It is configured to pressurize while conveying the object between the belt and the upper endless belt, and the lower frame and the upper frame are a front end on one side and an end on the other side in a horizontal direction perpendicular to the conveying direction of the object to be processed. Among the rear ends, at least the front end is detachably connected.

The double belt press apparatus according to a second aspect of the present invention, in the first aspect, further includes a hinge portion disposed at the rear end side to rotatably connect the upper frame with respect to the lower frame, wherein the upper frame With the hinge as the center of rotation, the front end of the upper frame is spaced apart from the front end of the lower frame, and the front end of the upper frame is connected to the front end of the lower frame. It is possible to change the posture to a standard posture.

The double belt press device according to the third aspect of the present invention, in the second aspect, further includes a holding mechanism for maintaining the upper frame posture of the belt attaching and detaching posture.

In the double belt press device according to the fourth aspect of the present invention, in any one of the first to third aspects, the lower frame, the upstream end in the conveying direction is located at the most upstream of the lower belt unit It is located on the downstream side in the conveying direction from the position of the upstream main surface of the roll, and is upstream in the conveying direction from the position of the main surface of the downstream side of the roll whose downstream end is located most downstream of the lower belt unit. , and the upper frame is located downstream in the conveying direction from the position of the main surface on the upstream side of the roll where the upstream end in the conveying direction is positioned most upstream of the upper belt unit, and the downstream end in the conveying direction is located in the upper belt unit. It is located on the upstream side in the conveying direction from the position of the main surface on the downstream side of the roll located most downstream of the upper belt unit.

The double belt press machine according to a fifth aspect of the present invention, in any one of the first to fourth aspects, further includes a support leg for supporting the lower frame from below, and the support leg is in the conveying direction A rear leg body that is grounded and disposed on the rear side in a horizontal direction orthogonal to the ground; and a front leg body disposed on the front side in a horizontal direction orthogonal to the transport direction, grounded, and detachable from the lower frame.

A double belt press machine according to a sixth aspect of the present invention, in the fifth aspect, includes an outer leg body in which the support leg is disposed rearward than the rear leg body and is grounded.

According to the present invention, the upper frame for pivoting the roll supporting the upper endless belt and the lower frame for pivoting the roll supporting the lower endless belt are ends on one side in the horizontal direction orthogonal to the conveyance direction of the object to be processed. It is separable at least at the front end among the front end and the rear end which is an end part of the other side. For this reason, by separating the front end of the upper frame and the front end of the lower frame, the upper frame and the lower frame can be attached and detached without cutting the upper endless belt and the lower endless belt. That is, according to the present invention, the upper endless belt and the lower endless belt can be attached and detached without cutting, and the upper endless belt and the lower endless belt can be replaced as expendable items. Therefore, according to the present invention, the thickness values of the upper endless belt and the lower endless belt can be made smaller than those of an endless belt that is not interchangeable, and the heat capacity of the upper endless belt and the lower endless belt can be reduced. Therefore, according to the present invention, the production speed can be improved by reducing the heat capacity of the endless belt in the double belt press machine.

1 is a side view showing a schematic configuration of a double belt press machine in a first embodiment of the present invention.
Fig. 2 is a plan view showing a schematic configuration of a double belt press machine in the first embodiment of the present invention.
3 is a AA cross-sectional view of FIG. 2 .
Fig. 4 is a side view showing a schematic configuration of a double belt press machine in a second embodiment of the present invention.
5 is a plan view showing a schematic configuration of a double belt press machine in a second embodiment of the present invention.
Fig. 6 is a cross-sectional view showing a schematic configuration of a double belt press machine in a second embodiment of the present invention.
7A is a schematic view showing a modified example of the double belt press device of the present invention, and is a view showing a state in which the upper belt unit is lowered.
7B is a schematic view showing a modified example of the double belt press device of the present invention, and is a view showing a state in which the upper belt unit is raised.
8A is a schematic view showing a modified example of the double belt press device of the present invention, and is a view showing a state in which the upper belt unit is lowered.
8B is a schematic view showing a modified example of the double belt press device of the present invention, and is a view showing a state in which the upper belt unit is raised.

Hereinafter, an embodiment of a double belt press device according to the present invention will be described with reference to the drawings.

(First Embodiment)

1 is a side view showing a schematic configuration of a double belt press device S1 according to a first embodiment. 2 is a plan view showing a schematic configuration of the double belt press machine S1 of the first embodiment. FIG. 3 is a cross-sectional view A-A of FIG. 2 . The double belt press apparatus S1 of the present embodiment is for manufacturing a prepreg in which reinforcing fibers are impregnated with a thermoplastic resin. The double belt press device S1 of the present embodiment impregnates the thermoplastic resin into the reinforcing fiber to make prepreg while conveying the material X (reinforcing fiber and thermoplastic resin) as the object to be processed from left to right in FIG. 1 . As shown in FIG. 1 and the like, the double belt press device S1 of the present embodiment includes a lower belt unit 1, an upper belt unit 2, a support leg 3, a hinge portion 4, and a heater unit 5 and a cooling unit 6.

On the other hand, in the following description, the direction in which the material X is conveyed is the width direction of the double belt press device S1, and one side of the width direction (the upstream side of the flow direction of the material X) is the left side. , the other side in the width direction (the downstream side in the flow direction of the material (X)) is made right. Further, the horizontal direction orthogonal to the width direction is the depth direction, and one side (right side in FIG. 3) of the depth direction is the front side, and the other side (left side in FIG. 3) is the rear side.

The lower belt unit 1 is a belt unit supported from below by a support leg 3 . The lower belt unit 1 includes a lower frame 1a, a roll 1b and a lower endless belt 1c. The lower frame 1a is a frame supporting the plurality of rolls 1b. The lower frame 1a has left and right rods 1a1 extending in the left and right directions, front and rear rods 1a2 extending in the depth direction, and upper and lower rods 1a3 extending in the vertical direction. The left and right rods 1a1, the front and rear rods 1a2, and the upper and lower rods 1a3 are configured in a lattice shape.

For example, as shown in Fig. 3, the lower frame 1a has a shape in which a front portion 1a4 disposed on the front side in the depth direction and a rear portion 1a5 disposed on the rear side in the depth direction are connected by front and rear bars 1a2. has Front end 1a4 is formed by left and right rods 1a1 and upper and lower rods 1a3 disposed on the front side in the depth direction. The rear portion 1a5 is formed by the left and right rods 1a1 and the upper and lower rods 1a3 disposed on the rear side in the depth direction.

Further, an upper frame 2a described below is disposed above the lower frame 1a, and a support leg 3 is disposed below the lower frame 1a. Upper ends of the upper and lower rods 1a3 are connected to the upper frame 2a. A flange 1a6 for connection with the upper frame 2a is provided at an upper end of the upper and lower rods 1a3. In addition, the lower ends of the upper and lower rods 1a3 are connected to the lower frame 1a. A flange 1a7 for connection with the support leg 3 is provided at the lower end of the upper and lower bars 1a3.

In this embodiment, the plurality of flanges 1a6 are arranged along a single horizontal plane. That is, in this embodiment, the plurality of flanges 1a6 are arranged at the same height. However, it is not necessary to arrange the flanges 1a6 at the same height. Also, in this embodiment, the plurality of flanges 1a7 are arranged along a single horizontal plane different from the horizontal plane on which the flanges 1a6 are arranged. That is, in this embodiment, the plurality of flanges 1a7 are also arranged at the same height. However, it is not necessary to arrange the flanges 1a7 at the same height.

The plurality of rolls 1b are provided with rotational axes parallel to the lower belt unit 1, and support the lower endless belt 1c so as to be able to run. In this embodiment, a drive roll 1d, a tension roll 1e, a driven roll 1f, and a pressure roll 1g are provided as the roll 1b.

The driving roll 1d is a roll 1b to which a motor 1i is connected, and is rotationally driven by the power of the motor 1i. The drive roll 1d is arranged at the rightmost end in the width direction of the double belt press device S1 among the plurality of rolls 1b, and is pivotally supported at the right end of the lower frame 1a. On the other hand, the driving roll 1d is provided protruding to the right from the right end of the lower frame 1a. That is, the rightmost end of the drive roll 1d in the width direction is disposed on the right side of the rightmost end of the lower frame 1a (namely, on the downstream side in the conveying direction of the material X).

The tension roll 1e is a roll 1b connected with a cylinder that adjusts the position of the tension roll 1e, and adjusts the tension applied to the lower endless belt 1c. The tension roll 1e is disposed at the leftmost end in the width direction of the double belt press device S1 among the plurality of rolls 1b, and is supported by the left end of the lower frame 1a.

On the other hand, the tension roll 1e is provided protruding to the left from the left end of the lower frame 1a. That is, the leftmost end of the tension roll 1e in the width direction is disposed on the left side of the leftmost end of the lower frame 1a (ie, upstream in the conveying direction of the material X). Further, the lower end of the main surface of the tension roll 1e is at the same height as the lower end of the main surface of the drive roll 1d.

On the other hand, as described above, in the present embodiment, the rightmost end of the driving roll 1d is disposed downstream of the lower frame 1a in the transport direction, and the leftmost end of the tension roll 1e is the lower frame ( It is arrange|positioned on the upstream side of the conveyance direction rather than 1a). That is, in this embodiment, the upstream end of the lower frame 1a in the conveying direction is located downstream in the conveying direction from the position of the upstream main surface of the roll 1b located at the most upstream of the lower belt unit 1, The downstream end of the lower frame 1a in the conveying direction is located upstream in the conveying direction from the position of the downstream principal surface of the roll 1b located most downstream of the lower belt unit 1 . For this reason, the total length value of the lower frame 1a in the direction along the conveying direction is smaller than the total length value of the lower endless belt 1c wound around the roll 1b in the same direction.

The driven roll 1f is disposed above the tension roll 1e and rotates along with the running of the lower endless belt 1c. The position of the upper end of the main surface of the driven roll 1f is at the same height as the position of the upper end of the main surface of the driving roll 1d.

The pressure roll 1g is a roll 1b that presses the lower endless belt 1c against the material X, and is disposed between the drive roll 1d and the driven roll 1f as shown in FIG.

The lower endless belt 1c is, for example, a ring-shaped belt made of stainless steel, and has a constant width in the depth direction of the double belt press machine S1. Although it will be explained in more detail later, in this embodiment, the lower endless belt 1c is detachable from the plurality of rolls 1b and exchangeable by pulling it out to the front in a state where the tension is relaxed. The lower endless belt 1c is premised on periodic replacement and has a smaller thickness value than the endless belt presumed not to be replaced. Specifically, the thickness value of the endless belt on the premise of not being replaced is required to be 1 mm or more, but the thickness value of the lower endless belt 1c in this embodiment is, for example, about 0.3 mm. Because of this, the heat capacity of the lower endless belt 1c in this embodiment is much smaller than that of the endless belt assuming that it is not exchanged.

The upper belt unit 2 is a belt unit supported from below by the lower belt unit 1 . The upper belt unit 2 has an upper frame 2a, a roll 2b and an upper endless belt 2c. The upper frame 2a is a frame supporting the plurality of rolls 2b. The upper frame 2a has left and right rods 2a1 extending in the left and right directions, front and rear rods 2a2 extending in the depth direction, and upper and lower rods 2a3 extending in the vertical direction. The left and right rods 2a1, the front and rear rods 2a2, and the upper and lower rods 2a3 are configured in a lattice shape.

For example, as shown in Fig. 3, the upper frame 2a has a shape in which a front part 2a4 disposed on the front side in the depth direction and a rear part 2a5 disposed on the rear side in the depth direction are connected by front and rear bars 2a2. has Front end 2a4 is formed by left and right rods 2a1 and upper and lower rods 2a3 disposed on the front side in the depth direction. The rear portion 2a5 is formed by the left and right rods 2a1 and the upper and lower rods 2a3 disposed on the rear side in the depth direction.

Further, a lower frame 1a is disposed below the upper frame 2a. The lower ends of the upper and lower rods 2a3 are connected to the lower frame 1a. A flange 2a6 for connection with the lower frame 1a is provided at the lower end of the upper and lower rods 2a3. More specifically, the upper and lower bars 2a3 connected to the lower frame 1a are aligned with the upper and lower bars 1a3 of the lower frame 1a. For this reason, the flange 2a6 provided on the upper and lower bar 2a3 of the upper frame 2a and the flange 1a6 provided on the upper and lower bar 1a3 of the lower frame 1a are in contact with each other from the vertical direction.

When the flange 2a6 and the flange 1a6 are fastened with bolts or the like not shown, the upper frame 2a (ie, the upper belt unit 2) and the lower frame 1a (ie, the lower belt unit 1) are formed. this is fixed

In this embodiment, the plurality of flanges 2a6 are arranged along a single horizontal plane. That is, in this embodiment, the some flange 2a6 is arrange|positioned at the same height. However, it is not necessary to arrange the flanges 2a6 at the same height.

In addition, the upper frame 2a has an extension bar 2a7 that contacts the support leg 3 from above when the upper belt unit 2 is in an open posture described later. As shown in Fig. 3, the extension bar 2a7 protrudes horizontally from the rear end of the front and rear bar 2a2 of the upper frame 2a toward the rear side. A flange 2a8 is provided at the distal end of the extension bar 2a7.

The plurality of rolls 2b are provided with rotational axes parallel to the upper belt unit 2, and support the upper endless belt 2c so as to be able to run. In this embodiment, a driving roll 2d, a tension roll 2e, a driven roll 2f, and a pressure roll 2g are provided as the roll 2b.

The drive roll 2d is a roll 2b to which a motor 2i is connected, and is rotationally driven by the power of the motor 2i. Drive roll 2d is arrange|positioned at the far right end of the width direction of double belt press apparatus S1 among several roll 2b, and is pivotally supported by the right end part of upper frame 2a. On the other hand, the driving roll 2d protrudes to the right from the right end of the upper frame 2a. That is, the rightmost end of the driving roll 2d in the width direction is disposed on the right side of the rightmost end of the upper frame 2a (namely, on the downstream side in the conveying direction of the material X).

The tension roll 2e is a cylinder-connected roll 2b that adjusts the position of the tension roll 2e, and adjusts the tension applied to the upper endless belt 2c. The tension roll 2e is arranged at the leftmost end in the width direction of the double belt press device S1 among the plurality of rolls 2b, and is pivotally supported by the left end of the upper frame 2a.

On the other hand, the tension roll 2e protrudes leftward from the left end of the upper frame 2a and is provided. That is, the leftmost end of the tension roll 2e in the width direction is disposed on the left side of the leftmost end of the upper frame 2a (ie, upstream in the conveying direction of the material X). Further, the position of the upper end of the main surface of the tension roll 2e is at the same height as the upper end of the main surface of the driving roll 2d.

On the other hand, as described above, in this embodiment, the rightmost end of the driving roll 2d is disposed downstream of the upper frame 2a in the transport direction, and the leftmost end of the tension roll 2e is the upper frame 2a ) is disposed upstream in the conveying direction. That is, in this embodiment, the upstream end of the upper frame 2a in the conveying direction is located on the downstream side in the conveying direction from the position of the upstream main surface of the roll 2b located at the most upstream of the upper belt unit 2, and the upper side The downstream end of the frame 2a in the conveying direction is located upstream in the conveying direction from the position of the downstream main surface of the roll 2b located most downstream of the upper belt unit 2 . For this reason, the overall length value of the upper frame 2a in the direction along the conveying direction is smaller than the overall length value of the upper endless belt 2c wound around the roll 2b in the same direction.

The driven roll 2f is arranged below the tension roll 2e and rotates along with the running of the upper endless belt 2c. The position of the lower end of the main surface of the driven roll 2f is at the same height as the position of the lower end of the main surface of the drive roll 2d.

The pressure roll 2g is a roll 2b that presses the upper endless belt 2c against the material X, and is disposed between the drive roll 2d and the driven roll 2f as shown in FIG.

The upper endless belt 2c is a ring-shaped belt made of, for example, stainless steel, and has a constant width value in the depth direction of the double belt press machine S1. Although described in detail later, in the present embodiment, the upper endless belt 2c is detachable from the plurality of rolls 2b by pulling it forward in a state in which the tension is relaxed, and is exchangeable.

The upper endless belt 2c is premised on periodic replacement and has a smaller thickness value than that of the endless belt presumed not to be replaced. Specifically, the thickness value of the endless belt on the premise of not being replaced is required to be 1 mm or more, but the thickness value of the upper endless belt 2c in this embodiment is, for example, about 0.3 mm. For this reason, the heat capacity of the upper endless belt 2c in this embodiment is much smaller than that of the endless belt assuming that it is not exchanged.

The upper belt unit 2 is rotatable about the hinge part 4 . In this way, by rotating around the hinge portion 4, the upper frame 2a can change its posture between a horizontal posture (standard posture) and an open posture (belt attaching and detaching posture). The horizontal posture is the posture of the upper belt unit 2 indicated by the solid line in FIG. 3, and is the posture in which the shaft core of the roll 2b of the upper belt unit 2 is horizontal. In the horizontal posture, the front part 2a4 of the upper frame 2a is in contact with the front part 1a4 of the lower frame 1a, and the upper endless belt 2c and the lower endless belt 1c are opposed to each other.

The open posture is the posture of the upper belt unit 2 indicated by a phantom line in FIG. 3, and is an inclined posture such that the shaft core of the roll 2b of the upper belt unit 2 is displaced upward as it faces forward. In the open posture, the front part 2a4 of the upper frame 2a is separated from the front part 1a4 of the lower frame 1a, and the upper endless belt 2c and the lower endless belt 1c are disposed apart from each other. On the other hand, in the case of the open posture, bolts or the like fastening the flange 2a6 of the front portion 2a4 of the upper frame 2a and the flange 1a6 of the front portion 1a4 of the lower frame 1a are removed.

By setting the upper belt unit 2 to the open position in this way, the upper endless belt 2c can be pulled out to the front side of the upper belt unit 2 (upward in the open position). That is, by setting the upper belt unit 2 to an open posture, it is possible to attach and detach the upper endless belt 2c without cutting it.

The support leg 3 is disposed below the lower belt unit 1 and supports the lower belt unit 1 from below. The support leg 3 includes a front leg body 3a, a rear leg body 3b, an outside leg body 3c, and a support base 3d. The front leg body 3a is disposed below the front portion 1a4 of the lower frame 1a. The front leg body 3a is fastened to a flange 1a7 provided on the front portion 1a4 of the lower frame 1a with bolts or the like not shown, and can be removed from the lower frame 1a by removing the bolts or the like. there is. That is, the front leg main body 3a is detachable from the lower frame 1a. This detachable front leg body 3a is disposed ahead of the rear leg body 3b in the depth direction of the double belt press machine S1 and is grounded.

The rear leg body 3b is disposed below the rear portion 1a5 of the lower frame 1a. The rear leg body 3b is fastened to a flange 1a7 provided on the rear portion 1a5 of the lower frame 1a with a bolt or the like not shown. The rear leg body 3b is disposed rearward of the front leg body 3a in the depth direction of the double belt press device S1 and is grounded.

The outer leg body 3c is disposed further rearward than the rear leg body 3b, is grounded, and is connected to the rear leg body 3b via a horizontal bar. The outer leg main body 3c contacts the extension bar 2a7 of the upper belt unit 2 in the open position from above via the flange 2a8, and supports the upper belt unit 2 in the open position from below. .

On the other hand, when the upper belt unit 2 is in a horizontal posture, the center of gravity of the double belt press device S1 is disposed between the front leg body 3a and the rear leg body 3b in plan view. On the other hand, in this embodiment, by placing the upper belt unit 2 in an open position, the center of gravity of the double belt press device S1 is located between the rear leg body 3b and the outer leg body 3c in plan view. For this reason, by setting the upper belt unit 2 to an open posture, it is possible to maintain the balance of the double belt press device S1 even if the front leg main body 3a is removed.

On the other hand, the lower frame 1a can be taken out to the front side of the lower belt unit 1 by removing the front leg body 3a with the upper belt unit 2 in an open position. That is, by removing the front leg main body 3a with the upper belt unit 2 in an open posture, it is possible to attach and detach the lower endless belt 1c without cutting it.

The support base 3d is a horizontal plank portion connected to the upper portion of the outer leg body 3c and the lower frame 1a, and supports the hinge portion 4 from below. On the other hand, it is also possible to directly fix the hinge part 4 to the lower frame 1a without providing the support 3d.

The hinge part 4 rotatably connects the lower frame 1a and the upper frame 2a through the support 3d. In this embodiment, the support 3d is provided in two places, and the hinge part 4 is also provided in two places. The upper belt unit 2 rotates around the hinge part 4 .

The heater unit 5 is arranged upstream of the pressure rolls 1g and 2g, and heats the material (X). The heater unit 5 includes a pair of heaters vertically opposed to each other with a region through which the material X passes, and heats the material X from the vertical direction.

The cooling unit 6 is disposed downstream of the pressure rolls 1g and 2g in the material transport direction, and cools the reinforcing fibers impregnated with the resin. The configuration of the cooling unit 6 is not particularly limited. For example, the cooling unit 6 may be a blower. In addition, the cooling unit 6 can be provided with a plurality of cooling rolls, and can be configured to cool the material (X) by heat exchange with the cooling rolls.

In the double belt press device S1 of the present embodiment, the upper belt unit 2 is placed in a horizontal position, and the material X between the upper part of the lower endless belt 1c and the lower part of the upper endless belt 2c is heated and A prepreg is produced by pressing. Specifically, the lower endless belt 1c is driven by the driving roll 1d so that the upper part of the lower endless belt 1c flows from left to right.

Further, the upper endless belt 2c is driven by the drive roll 2d so that the lower part of the upper endless belt 2c flows from left to right. Between the lower endless belt 1c and the upper endless belt 2c running in this way, the material X is continuously or discretely supplied from the left side. The supplied material X is heated by the heater unit 5 to melt the thermoplastic resin, and the melted resin is pressed by the pressure rolls 1g and 2g to impregnate the reinforcing fibers. Thereafter, by cooling the resin, it becomes a prepreg and is discharged from the double belt press device S1.

In the case of exchanging the upper endless belt 2c in the double belt press machine S1, the upper belt unit 2 and the lower belt unit 1 are loosened, and the upper belt unit 2 is not shown. It is lifted with a crane or the like to change the posture of the upper belt unit 2 from the horizontal posture to the open posture. After the upper belt unit 2 is in the open position, the tension applied to the upper endless belt 2c is released by the tension roll 2e. On the other hand, the process of loosening the tension applied to the upper endless belt 2c can be performed before putting the upper belt unit 2 into an open posture. Subsequently, the upper endless belt 2c is removed from the roll 2b, and then a new upper endless belt 2c is mounted on the roll 2b.

Further, when replacing the lower endless belt 1c, as described above, the posture of the upper belt unit 2 is changed from the horizontal posture to the open posture, and the front leg body 3a is removed. After the upper belt unit 2 is in the open position, the tension applied to the lower endless belt 1c is released by the tension roll 1e. On the other hand, the process of loosening the tension applied to the lower endless belt 1c can be performed before putting the upper belt unit 2 into an open posture. Subsequently, the lower endless belt 1c is removed from the roll 1b, and then a new lower endless belt 1c is mounted on the roll 1b.

The double belt press apparatus S1 of the present embodiment as described above has a lower belt unit 1 having a lower endless belt 1c supported by a plurality of rolls 1b and an upper side of the lower belt unit 1. An upper belt unit 2 having an upper endless belt 2c supported by a plurality of rolls 2b while being arranged is provided. The double belt press apparatus S1 of this embodiment pressurizes while conveying the material X between the lower endless belt 1c and the upper endless belt 2c. The lower belt unit 1 includes a lower frame 1a for pivoting a roll 1b supporting the lower endless belt 1c. In addition, the upper belt unit 2 is provided with an upper frame 2a for pivoting a roll 2b supporting the upper endless belt 2c. In addition, the lower frame 1a and the upper frame 2a are detachably connected at the front end of one end and the front end of the rear end of the other end in the horizontal direction orthogonal to the transport direction of the material X.

According to the double belt press machine S1 of the present embodiment, the upper frame 2a supporting the roll 2b supporting the upper endless belt 2c and the roll 1b supporting the lower endless belt 1c The lower frame 1a supporting the shaft is detachable from at least the front end of the front end that is one end and the rear end that is the other end in the horizontal direction orthogonal to the conveyance direction of the material X. For this reason, by separating the front end of the upper frame 2a and the front end of the lower frame 1a, the upper frame 2a and the lower frame 1a are formed without cutting the upper endless belt 2c and the lower endless belt 1c. It is possible to attach and detach to avoid it. That is, according to the double belt press device S1 of the present embodiment, the upper endless belt 2c and the lower endless belt 1c can be attached and detached without cutting, and the upper endless belt 2c and the lower endless belt 1c can be attached and detached without cutting. ) can be exchanged as consumables.

Therefore, according to the double belt press device S1 of the present embodiment, the thickness values of the upper endless belt 2c and the lower endless belt 1c can be made smaller than those of the endless belts that are not subject to replacement. For this reason, the heat capacities of the upper endless belt 2c and the lower endless belt 1c can be reduced. Therefore, the double belt press apparatus S1 of the present embodiment can reduce the heat capacity of the endless belt, and can improve the production speed when energy equivalent to that of the conventional double belt press apparatus is used. Moreover, according to the double belt press apparatus S1 of this embodiment, when it is set as the production speed equivalent to the conventional double belt press apparatus, energy consumption can be reduced.

Moreover, the double belt press apparatus S1 of this embodiment is equipped with the hinge part 4. The hinge part 4 is disposed on the rear end side and rotatably connects the upper frame 2a to the lower frame 1a. Further, in the double belt press device S1 of the present embodiment, the upper frame 2a is in an open posture in which the front end of the upper frame 2a is spaced apart from the front end of the lower frame 1a with the hinge portion 4 as the center of rotation. The front end of the upper frame 2a and the front end of the lower frame 1a are linked to a horizontal posture, and the posture can be changed.

According to the double belt press device S1 of the present embodiment, the posture of the upper frame 2a (ie, the upper belt unit 2) can be easily changed by rotating the hinge portion 4 as the center. Therefore, according to the double belt press apparatus S1 of this embodiment, the posture change operation of the upper belt unit 2 is easy.

In addition, in the double belt press device S1 of the present embodiment, the upstream end of the lower frame 1a in the material transport direction is the roll 1b (tension roll 1e) positioned at the most upstream of the lower belt unit 1 )) is located on the downstream side in the material conveying direction rather than the position of the upstream main surface. In addition, the downstream end of the lower frame 1a in the material conveyance direction is upstream in the material conveyance direction from the position of the downstream main surface of the roll 1b (drive roll 1d) located at the most downstream of the lower belt unit 1. located on the side In addition, the upstream end of the upper frame 2a in the material conveyance direction is downstream in the material conveyance direction from the position of the main surface on the upstream side of the roll 2b (tension roll 2e) located at the most upstream of the upper belt unit 2. located on the side Further, the downstream end of the upper frame 2a in the material conveyance direction is upstream in the material conveyance direction from the position of the downstream main surface of the roll 2b (drive roll 2d) located at the most downstream of the upper belt unit 2. located on the side

According to the double belt press apparatus S1 of this embodiment, the length value of the lower endless belt 1c in the material transport direction is larger than the length value of the lower frame 1a in the material transport direction. For this reason, attachment and detachment of the lower endless belt 1c can be performed easily. Further, according to the double belt press device S1 of the present embodiment, the length value of the upper endless belt 2c in the material transport direction is larger than the length value of the upper frame 2a in the material transport direction. For this reason, the upper endless belt 2c can be attached and detached easily.

Moreover, the double belt press apparatus S1 of this embodiment is equipped with the support leg 3 which supports the lower frame 1a from below. In addition, the support leg 3 is disposed on the rear side in the horizontal direction orthogonal to the material transport direction and grounded, and the rear leg body 3b is disposed on the front side in the horizontal direction orthogonal to the material transport direction and grounded, and the lower frame 1a ) has a detachable front leg body 3a.

According to the double belt press device S1 of the present embodiment, the front leg main body 3a only needs to be removed from the lower frame 1a when attaching or detaching the lower endless belt 1c from the lower belt unit 1. For this reason, the weight of the lower belt unit 1 and the upper belt unit 2 can be supported by the rear leg body 3b and the front leg body 3a during the period when the lower endless belt 1c is not attached or detached. can Therefore, according to the double belt press device S1, the lower belt unit 1 and the upper belt unit 2 can be stably supported. On the other hand, in the double belt press device S1 of the present embodiment, by supporting the lower belt unit 1 and the upper belt unit 2 with other members, it is also possible to adopt a configuration without the support legs 3. .

Further, in the double belt press device S1 of the present embodiment, the support leg 3 is provided with an outer leg body 3c that is disposed rearward than the rear leg body 3b and is grounded. For this reason, when the upper belt unit 2 is wide open, even when the center of gravity of the double belt press device S1 moves rearward from the rear leg main body 3b, the balance of the double belt press device S1 can be maintained. there is. Therefore, as shown in Fig. 3, the upper belt unit 2 can be opened wide to a posture in which the upper belt unit 2 can stand on its own.

(Second Embodiment)

Subsequently, a second embodiment of the present invention will be described. Meanwhile, in the description of the second embodiment, the description of the same parts as those of the first embodiment is omitted or simplified.

Fig. 4 is a side view showing a schematic configuration of a double belt press machine S2 according to a second embodiment. 5 is a plan view showing a schematic configuration of the double belt press machine S2 of the second embodiment. Fig. 6 is a cross-sectional view showing a schematic configuration of a double belt press device S2 according to a second embodiment.

For example, as shown in Fig. 4, the lower belt unit 1 is provided with three pressure rolls 1g. In addition, the lower belt unit 1 does not include the driven roll 1f provided in the first embodiment. On the other hand, in this embodiment, the tension roll 1e has the same diameter as the drive roll 1d.

Also, the upper belt unit 2 is provided with three pressure rolls 2g. In addition, the upper belt unit 2 does not include the driven roll 2f provided in the first embodiment. On the other hand, in this embodiment, the tension roll 2e has the same diameter as the drive roll 2d. In addition, in FIG. 4, the motor 1i and the motor 2i are omitted and shown.

Moreover, the double belt press apparatus S2 of this embodiment is equipped with the cooling unit 6. The cooling unit 6 is disposed downstream of the pressure rolls 1g and 2g in the material transport direction, and cools the reinforcing fibers impregnated with the resin. The configuration of the cooling unit 6 is not particularly limited. For example, the cooling unit 6 can be provided with a plurality of cooling rolls and can be configured to cool the material (X) by heat exchange with the cooling rolls.

Further, in the double belt press device S2 of the present embodiment, as shown in FIG. 6 , the support leg 3 has a substantially L-shaped base portion 3e and a base portion ( With respect to 3e), it is provided with the attachable and detachable part 3f. The upper end of the base portion 3e is fixed to the lower frame 1a. As shown in Fig. 6, the upper end of the base portion 3e is connected to a portion on the side of the rear portion 1a5 of the lower frame 1a from below. Further, the lower portion of the base portion 3e extends toward the front side. The base portion 3e has strength capable of supporting the lower belt unit 1 and the upper belt unit 2 even when the detachable portion 3f is removed.

The detachable portion 3f is inserted between the front end of the base portion 3e and the lower frame 1a. The upper end of the detachable portion 3f is connected to a portion on the front 1a4 side of the lower frame 1a from below. The detachable portion 3f is fixed to the base portion 3e and the lower frame 1a by bolts or the like not shown.

Moreover, the double belt press device S2 of this embodiment is provided with the holding mechanism 7 which maintains the attitude|position of the upper frame 2a of open posture. The holding mechanism 7 has a fixed part 7a fixed to the lower frame 1a and a moving part 7b fixed to the upper frame 2a. The fixed portion 7a and the moving portion 7b are provided with through holes whose centers coincide when viewed from the material transport direction when the upper frame 2a is in an open posture. In addition, the holding mechanism 7 is provided with a fastening rod 7c inserted into both the through hole of the fixed portion 7a and the through hole of the moving portion 7b in a state where the upper belt unit 2 is in an open position, there is.

On the other hand, in FIG. 5, since the upper belt unit 2 is in a horizontal position, originally, the fastening rods 7c cannot be inserted into the through-holes of the fixing part 7a and the moving part 7b, but for convenience of description, the fastening rods (7c) shows the inserted state. In this way, since the fastening rod 7c is inserted into both the through hole of the fixing part 7a and the through hole of the moving part 7b, the moving part 7b cannot move with respect to the fixing part 7a, and the upper frame ( 2a) (ie, the upper belt unit 2) is fixed in the open posture.

In the case of exchanging the upper endless belt 2c in the double belt press machine S2, the upper belt unit 2 and the lower belt unit 1 are loosened, and the upper belt unit 2 is not shown in the crane, etc. , the upper belt unit 2 is lifted, and the posture of the upper belt unit 2 is changed from the horizontal posture to the open posture. Then, the posture of the upper belt unit 2 is maintained in the open posture by the holding mechanism 7 . After the upper belt unit 2 is held in the open position, the tension applied to the upper endless belt 2c by the tension roll 2e is released. On the other hand, the process of loosening the tension applied to the upper endless belt 2c can be performed before putting the upper belt unit 2 into an open posture. Subsequently, the upper endless belt 2c is removed from the roll 2b, and then a new upper endless belt 2c is mounted on the roll 2b.

Further, when replacing the lower endless belt 1c, as described above, the posture of the upper belt unit 2 is changed from the horizontal posture to the open posture, and the detachable portion 3f is removed. After the upper belt unit 2 is in the open position, the tension applied to the lower endless belt 1c is released by the tension roll 1e. On the other hand, the process of loosening the tension applied to the lower endless belt 1c can be performed before putting the upper belt unit 2 into an open posture. Subsequently, the lower endless belt 1c is removed from the roll 1b, and then a new lower endless belt 1c is mounted on the roll 1b.

According to the double belt press device S2 of the present embodiment as described above, similarly to the double belt press device S1 of the first embodiment, the upper side pivotally supports the roll 2b supporting the upper endless belt 2c. The lower frame 1a supporting the roll 1b supporting the frame 2a and the lower endless belt 1c has a front end on one side and a front end on the other side in the horizontal direction orthogonal to the transport direction of the material X. It is separable from at least the front end of the rear end which is an end part. For this reason, by separating the front end of the upper frame 2a and the front end of the lower frame 1a, the upper frame 2a and the lower frame 1a are formed without cutting the upper endless belt 2c and the lower endless belt 1c. It is possible to attach and detach to avoid it. That is, according to the double belt press device S2 of the present embodiment, the upper endless belt 2c and the lower endless belt 1c can be attached and detached without cutting, and the upper endless belt 2c and the lower endless belt 1c can be attached and detached without cutting. ) can be exchanged as consumables. Therefore, according to the double belt press device S2 of the present embodiment, the thickness values of the upper endless belt 2c and the lower endless belt 1c can be made smaller than those of the endless belts that are not subject to replacement. For this reason, the heat capacities of the upper endless belt 2c and the lower endless belt 1c can be reduced. Therefore, the double belt press device S2 of the present embodiment can reduce the heat capacity of the endless belt, and can improve the production speed when energy equivalent to that of the conventional double belt press device is used. Moreover, according to the double belt press apparatus S2 of this embodiment, when it is set as the production speed equivalent to the conventional double belt press apparatus, energy consumption can be reduced.

The lower part of the base part 3e extends toward the front side. The base portion 3e has strength capable of supporting the lower belt unit 1 and the upper belt unit 2 even when the detachable portion 3f is removed. For this reason, it is also possible to employ|adopt the structure which does not provide the detachable part 3f. In such a case, the lower endless belt 1c can be attached or detached without performing the attaching or detaching operation of the detachable portion 3f. On the other hand, by providing the detachable portion 3f, the lower belt unit 1 and the upper belt unit 2 are connected by the detachable portion 3f and the base portion 3e during the period when the lower endless belt 1c is not being attached or detached. ) can support the weight of Therefore, according to the double belt press device S2, the lower belt unit 1 and the upper belt unit 2 can be stably supported. Further, in the double belt press device S2 of the present embodiment, it is also possible to employ a structure not provided with the support legs 3 by supporting the lower belt unit 1 and the upper belt unit 2 with other members. .

In addition, the double belt press device S2 of this embodiment is provided with the holding mechanism 7 which maintains the attitude|position of the upper frame 2a of open posture. For this reason, it is possible to maintain the posture of the upper frame 2a in the open posture without continuing support by a crane or the like.

In the above, preferred embodiments of the present invention have been described with reference to the accompanying drawings, but it is needless to say that the present invention is not limited to the above embodiments. All shapes, combinations, etc. of each constituent member shown in the above-described embodiment are examples, and various changes are possible based on design requirements and the like without departing from the spirit of the present invention.

For example, in the above embodiment, the configuration in which the attitude change of the upper belt unit 2 is performed using an external crane or the like has been described. However, the present invention is not limited thereto. For example, as shown in Figs. 7A and 7B, a configuration including a hydraulic cylinder 10 for moving the upper belt unit 2 up and down may be adopted. By adopting such a configuration, it is possible to separate the upper belt unit 2 from the lower belt unit 1 by expanding and contracting the hydraulic cylinder 10, and attaching and detaching the lower endless belt 1c and the upper endless belt 2c. do. By providing the hydraulic cylinder 10 in this way, it is also possible to fix the upper belt unit 2 and the lower belt unit 1 hydraulically without using bolts or the like.

Further, for example, as shown in FIGS. 8A and 8B , by adopting a configuration including a hydraulic cylinder 11 and a link mechanism 12, the upper belt unit 2 is secured by expansion and contraction of the hydraulic cylinder 11. It can also be made to raise obliquely upward with respect to the lower belt unit 1.

In the double belt press machine, the heat capacity of the endless belt can be reduced, and the production speed can be improved.

1: lower belt unit 1a: lower frame
1a1: left and right bar 1a2: front and rear bar
1a3: upper and lower bars 1a4: all
1a5: Rear 1a6: Flange
1a7: flange 1b: roll
1c: lower endless belt 1d: drive roll
1e: Tension roll 1f: Follower roll
1g: pressure roll 1i: motor
2: upper belt unit 2a: upper frame
2a1: left and right bar 2a2: front and rear bar
2a3: upper and lower bars 2a4: all
2a5: rear 2a6: flange
2a7: extension rod 2a8: flange
2b: roll 2c: upper endless belt
2d: drive roll 2e: tension roll
2f: driven roll 2g: pressure roll
2i: motor 3: support leg
3a: front leg body 3b: rear leg body
3c: outer leg body 3d: support
3e: base part 3f: detachable part
4: hinge part 5: heater unit
6: cooling unit 7: holding mechanism
7a: fixed part 7b: moving part
7c: fastening rod 10: hydraulic cylinder
11: hydraulic cylinder 12: link mechanism
S1: double belt press unit S2: double belt press unit
X: material (processing object)

Claims (6)

a lower belt unit having a plurality of rolls, a lower endless belt supported by the plurality of rolls, and a lower frame supporting the plurality of rolls; and
An upper belt unit disposed above the lower belt unit and having a plurality of rolls, an upper endless belt supported by the plurality of rolls, and an upper frame supporting the plurality of rolls,
It is configured to press while conveying an object to be processed between the lower endless belt and the upper endless belt,
The lower frame and the upper frame are detachably connected at least at the front end of the front end of one end and the rear end of the other end in a horizontal direction orthogonal to the conveying direction of the object to be processed. According to claim 1,
Further comprising a hinge disposed at the rear end and rotatably connecting the upper frame with respect to the lower frame;
The upper frame can be changed to a standard posture in which the front end of the upper frame is spaced apart from the front end of the lower frame and the front end of the upper frame is connected to the front end of the lower frame with the hinge part as the center of rotation. The double belt press device that is meant to be done. According to claim 2,
The double belt press device further comprising a holding mechanism for maintaining the posture of the upper frame in the belt attaching and detaching posture. According to any one of claims 1 to 3,
In the lower frame, an upstream end in the conveying direction is located on a downstream side in the conveying direction from a position of an upstream main surface of a roll positioned most upstream of the lower belt unit, and a downstream end of the lower belt unit. Located on the upstream side in the conveying direction from the position of the downstream main surface of the most downstream roll,
The upper frame has an upstream end in the conveying direction located on a downstream side in the conveying direction from a position of an upstream main surface of a roll positioned most upstream of the upper belt unit, and a downstream end of the upper belt unit. A double belt press device located upstream in the conveying direction from the position of the downstream main surface of the most downstream roll. According to any one of claims 1 to 4,
Further comprising a support leg for supporting the lower frame from below,
The support leg,
a rear leg body disposed at the rear side in a horizontal direction orthogonal to the transport direction and grounded; and
A double belt press machine having a front leg body which is disposed on the front side in a horizontal direction orthogonal to the conveying direction, is grounded, and is detachable from the lower frame. According to claim 5,
The double belt press apparatus, wherein the supporting leg includes an outer leg body disposed rearward than the rear leg body and grounded.

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