JPH0679848A - Molding machine for elastic body having oriented short fiber mixed therein - Google Patents

Abstract

PURPOSE:To provide a forming machine for elastic bodies having oriented short fiber blended therein, which successively press-bonds elastic sheet bands cut into every predetermined dimension, and can make them integrated positively to render the mass production possible for them. CONSTITUTION:On upside at the right end of the main body 11 of a forming machine 10, a pair of forwarding rollers 12, 13 are disposed rotatably, and on the downside thereof, a guide device 14 comprising a guide board 14a and a guide body 14b is disposed to guide a rubber sheet 1. A shearing blade 15 is secured on the lower end corner part at the inside of the guide body 14b. A shearing blade 16 for cutting the rubber sheet 1 in cooperation with the shearing blade 15 is disposed horizontally reciprocally along the lower surface of the guide board 14a, the lower surface of the shearing blade 15 and the upper surface of a horizontal guide table 11a. Viewing from the side part, a rectangular resistant board 25 is arranged in a manner capable of approaching and separating with respect to the lower surface of the shearing blade 15.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a molding machine for an elastic body containing oriented short fibers in which the ends of a group of short fibers embedded inside are exposed from both sides of an elastic body having a constant thickness. The elastic body is used as a vibration damping material, a track pad, a construction pad, a floor material, a sliding material, and the like.

[0002]

2. Description of the Related Art An elastic body of this type has excellent durability and wear resistance because a short fiber group is embedded in the thickness direction of the elastic body, and the ends of the short fiber group are made of an elastic body. Since it is exposed from both sides, it has excellent impact resistance. Furthermore, there is an advantage that the friction coefficient can be arbitrarily adjusted by adjusting the protruding length of the short fiber group exposed from the elastic body, and in recent years, the demand has been greatly increased.

By the way, as a method for aligning the directions of the short fiber groups mixed in the elastic body in one direction, a cylindrical extrusion method and a sheet feeding method using a calender roll are generally used.

The former cylindrical extrusion method is disclosed in Japanese Examined Patent Publication No. Sho 58-2.
When the elastic body is pushed out through the annular passage as described in Japanese Patent No. 9231, the direction of the short fiber group is oriented by passing through a portion (called a weir) where the opening area of the passage is narrowed. According to the above, the hose-shaped elastic body is formed. Therefore, when using the elastic body for various purposes, usually, a step of cutting into a sheet shape is required, and the orientation ratio of the short fiber group by the same cylindrical extrusion method (probability that the short fiber group faces in a specific direction). Has a disadvantage of being as low as about 80%.

On the other hand, the latter sheet feeding method has the advantage that the orientation rate of the short fiber group is considerably high at 90% or more, but on the other hand, as the thickness increases, the orientation rate decreases, so that a thick sheet can be used. There is an inconvenience that it is difficult to obtain.

Therefore, an elastic sheet containing short fibers in which short fiber groups are oriented in the longitudinal direction is cut in the width direction by a sheet feeding method at predetermined intervals, and the cut elastic sheet strips are sequentially joined to each other at their side faces. A method for producing an elastic body in which short fiber groups are oriented in the thickness direction is disclosed in, for example, JP-A-60-219.
It is proposed as described in Japanese Patent No. 034.

[0007]

However, when the manufacturing method described in the above publication is specifically implemented,
There are various problems as described below. That is, it is difficult to sequentially feed the cut elastic sheet bands while keeping the posture in the vertical direction.

When the cut elastic sheet strips are sequentially crimped and integrated, if the crimping force is too strong, unvulcanized rubber or the like flows, the direction of the short fibers changes, and conversely, if the crimping force is weak,
The elastic sheet strips are no longer joined. Therefore, it is very difficult to control the crimping force when crimping the elastic sheet band.

When the elastic sheet is cut, the cut portion of the sheet may adhere to the blade and the elastic sheet may not be delivered.

The present invention has been made in view of the above-mentioned problems, and it is an orientation that solves the above-mentioned problems and sequentially presses elastic sheet strips cut into predetermined dimensions so that they can be surely integrated to enable mass production. An object is to provide a molding machine for an elastic body containing short fibers.

[0011]

In order to achieve the above-mentioned object, the molding machine of the present invention comprises: a) an elastic sheet in which a group of short fibers is oriented in the longitudinal direction of the sheet, and the elastic sheet in a predetermined width direction. Forming an elastic body containing oriented short fibers in which the short fiber ends are exposed on both sides by forming elastic sheet bands by cutting, and laminating and pressing the elastic sheet bands in order with their cut surfaces aligned. A machine, b) a pair of delivery rolls for delivering the elastic sheet by a predetermined size, and c) a guide member for guiding the elastic sheet along the delivery direction of the elastic sheet by the delivery roll, and the guide member With a shearing blade disposed with a space of d, the elastic sheet to be fed is cut in the widthwise direction in cooperation with the shearing blade, and the cut elastic sheet band can be extruded in the cutting direction. Time of sending roll The sandwich the elastic sheet strip and shear blades to reciprocate in synchronism, that e) sequentially extruded on,
A pair of resistance plates are provided so as to face the resistance plate, one of which is fixed and the other of which is fixed, so as to be parallel to and close to and away from each other.

According to a second aspect of the present invention, f) a detector for detecting a pressing force when the elastic blade strip is pushed out by the shearing blade is provided, and based on the value detected by the detector, the resistance plate on the fixed side is detected. It is preferable to adjust the distance between the resistance plates on the moving side.

As described in claim 3, g) the resistance plate on the fixed side may be formed on one surface of the shear blade.

According to a fourth aspect of the present invention, h) the rotation angle is smaller than the rotation angle after the delivery roll is rotated by a predetermined angle in the delivery direction of the elastic sheet, the elastic sheet is delivered and cut by the shear blade. More preferably, the delivery roll is rotated in the opposite direction by an angle.

[0015]

According to the molding machine of the present invention having the above construction (claim 1), the elastic sheet in which the short fiber group is oriented in the longitudinal direction of the sheet forms the guide member and the shear blade by the delivery roll. After being guided by the sheet to be fed out by a predetermined size, the elastic blade is cut in the width direction by advancing the shear blade orthogonal to the elastic sheet toward the shear blade body. Then, following this cutting, the cut elastic sheet band is extruded into the passage formed by the pair of resistance plates by the end face of the shearing blade. As a result, both sides of the elastic sheet strip are sandwiched by the pair of resistance plates, the elastic sheet strip is held in a posture parallel to the end face of the shearing blade, and a predetermined resistance force is applied to the movement of the elastic sheet strip. In this state, the shear blade retreats to its original position (initial position), and then when the elastic sheet is sent out and fed by the roll to the specified size, the shear blade advances again and the elastic sheet is cut in the width direction, resulting in elastic elasticity. The sheet strip is extruded into the passage formed by the pair of resistance plates by the end faces of the shear blades, so that the sheet strip is pressure-bonded to the elastic sheet strip extruded previously. The crimping force at this time can be controlled to an optimum value by adjusting the distance by moving the other resistance plate close to or away from the fixed resistance plate. By repeating the above operation, a plurality of elastic sheet strips are sequentially pressed and integrated to form an elastic body containing desired oriented short fibers.

According to the molding machine of the second aspect, the pressing force when the shear blade pushes out the elastic sheet band is detected by the detector, and the interval between the pair of resistance plates is determined based on the detected value. Adjusted automatically.

According to the molding machine of the third aspect, since the resistance plate on the fixed side is also used as one surface of the shear blade body, the number of parts is reduced and the structure is simplified.

According to the molding machine of the fourth aspect, when the delivery roll is rotated by a predetermined angle in the delivery direction of the elastic sheet and the elastic sheet is delivered by a predetermined dimension, the elastic sheet is sheared by the shear blade as described above. Although cut, the delivery roll rotates in the opposite direction by an angle smaller than the rotation angle, so that the cut portion of the elastic sheet is pulled back. Therefore, even if the cut portion of the elastic sheet adheres to the shearing blade or the like, the elastic sheet is reliably peeled off, so that the next feeding operation of the elastic sheet is not hindered.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a molding machine for an elastic body containing oriented short fibers of the present invention will be described below with reference to the drawings. First, the elastic body containing oriented short fibers molded by the molding machine of this embodiment will be described. FIG. 5 shows a molding method thereof. As shown in FIG. 5, an unvulcanized rubber 1a containing a large number of short fibers 2 mixed therein. Is rolled by a calendar roll (not shown),
The short fibers 2 are oriented in the longitudinal direction of the sheet and are formed in the rubber sheet (elastic sheet) 1. The sheet 1 has a thickness of about 0.6 to 1.0 mm, and the orientation rate of the short fibers 2 is usually 95% or more. As the material of the elastic sheet, not only rubber but also unvulcanized elastic body of synthetic resin such as vinyl chloride and polyurethane is used, and the short fiber 2 includes polyester, polyamide, carbon, glass, and metal fiber such as stainless steel. Also used.

The rubber sheet 1 has a predetermined size (for example, 5 m).
m) are sequentially cut in the width direction and formed on the rubber sheet band 3, and then the rubber sheet band 3 is fed in a direction perpendicular to one surface of the rubber sheet 1, and a large number of rubber sheet bands 3 are sequentially arranged. By being pressure-bonded and laminated on the side surface of the above, the elastic body 5 containing oriented short fibers in which the ends of the short fibers 2 are exposed on the upper and lower surfaces is formed. After the elastic body 5 is vulcanized, both upper and lower surfaces are buffed to adjust the protruding length of the ends of the short fibers 2 (usually 0.1 to 0.3 mm). After that, processing such as punching into a shape suitable for the application is performed, and the final product is finished. The molding machine of the present invention molds the elastic body 5.

FIG. 1 is a front view showing an embodiment of a molding machine and a partially enlarged view thereof, FIG. 2 is a plan view of the molding machine of FIG. 1, and FIG.
FIG. 3 is a right side view of the molding machine of FIG.

As shown in these figures, above the right end of the main body 11 of the molding machine 10, a pair of delivery rolls 12.1.
3 is rotatably arranged. Delivery roll 12.1
A guide device 14 including a guide plate 14a and a guide body 14b is disposed below the guide plate 3, and guides the rubber sheet 1 delivered by the rolls 12 and 13. Guide body 14b
As shown in the enlarged view of FIG. 1, a shear blade body 15 having a rectangular cross section is fixedly provided at the inner lower corner portion of the. An inner vertical surface of the shear blade body 15 is arranged flush with the vertical surface of the guide body 14b, and acts as a guide.

The rubber sheet 1 in cooperation with the shearing blade body 15
A shearing blade 16 for cutting is arranged along the lower surface of the guide plate 14a and the lower surface of the shearing blade body 15 and the upper surface of the horizontal guide base 11a so as to be reciprocally movable in the horizontal direction. Shearing blade 1
Reference numeral 6 denotes a rectangular plate body as viewed from above as shown in FIG. 2. The right end surface of the plate body 6 is a vertical flat surface and also has a function of pushing the cut rubber sheet band 3 forward to press it. As shown in the enlarged view of FIG. 1, the upper surface of the shear blade 16 and the guide plate 14
There is a slight gap between the lower surface of a and
The upper surface of the shear blade 16 and the lower surface of the shear blade body 15 come into contact with each other, and a shearing action occurs at the time of this contact.

The shearing blade 16 is attached to the front end of a support plate 17 which is horizontally slidable along the horizontal guide 11a. As shown in FIG. 2, a pair of load cells 18, 18, a pair of connecting rods 19, 19, and a pair of toggle devices 20, 20 are provided in this order at the rear end of the support plate 17, and are fixed below the center of the main body 11. It is connected to the provided crank mechanism 21. The crank mechanism 21 includes a crank disc 21 a that is rotated by a driving force of a motor 22, a lower end of an arm plate 20 a that constitutes a part of the toggle device 20, and a crank disc 21.
and a connecting link 21b connected to a. The left side of the upper end portion of the arm plate 20a is rotatably attached to both ends of a shaft 23 rotatably supported on the left end portion of the main body 11 via a pair of bearings 23a. The right side of the upper end portion of the arm plate 20a is connected to a link 20b forming a part of the toggle device 20 via a shaft 24.
Further, the link 20b enters the connecting rod 19 by being connected thereto via the shaft 19a. With these configurations, when the motor 22 is rotated in one direction, the shear blade 16 horizontally reciprocates via the crank mechanism 21 and the toggle device 20. In addition, the crank disk 21 a is provided on the lower surface of the main body 11 with a bearing 21.
The center of the drive shaft 21d is rotatably supported via the end portion of the drive shaft 21d. The rotation of the motor 22 is performed by the pulley 21e fixed to the drive shaft 21d via the endless belt 22a. Be transmitted.

On the front surface of the horizontal guide 11a, a support 11b having a slightly low height is provided. Inside the support 11b, a rectangular resistance plate 25 is vertically movable when viewed from the side as shown in FIG. 3, in other words, with respect to the lower surface of the shear blade body 15 which constitutes the fixed resistance plate. Approaching
It is arranged so that it can be separated. The lower end of the resistance plate 25 is attached to the lifting device 26 in the main body 11 with a plurality of bolts 26 a. The lifting device 26 includes an inclined plate 27 that is movable in the width direction of the main body 11 and an upper inclined surface 2 of the inclined plate 27.
It has a lower sloping surface 28a joined to 7a, and is provided with an elevating plate 28 that moves up and down by horizontal movement of the sloping plate 27.
The tilting plate 27 is moved by a horizontal feed mechanism (not shown) using a pulse motor 29, and the pulse motor 29, based on the value detected by the load cell 18,
The rotation direction and the rotation speed are controlled. A heating device (not shown) is built in each of the support body 11b and the guide body 14b so that the rubber sheet band 3 can be heated and kept at a predetermined temperature. This is because the adhesive force of the rubber sheet band 3 changes depending on the temperature, so that the adhesive force at the time of pressure-bonding the rubber sheet band 3 is ensured and reliably integrated. The temperature at which the optimum adhesive force is exerted varies depending on the rubber type, but is usually 25 to 100 ° C.

By the way, the pair of delivery rolls 12
After feeding the rubber sheet 1 downward by a predetermined length, when the cutting operation by the shearing blade 16 is completed, the rubber sheet 13 is rotated in the opposite direction so that the rubber sheet 1 can be pulled back by, for example, half the fed length. I have to. This is to prevent the cut end portion of the rubber sheet 1 from adhering to the shear blade body 15 and hindering the next feeding when the rubber sheet 1 is cut by the shear blade 16. That is, even if the cut end of the rubber sheet 1 adheres to the shearing blade body 15, by pulling back the rubber sheet 1, the rubber sheet 1
This is because the cut end of is peeled off from the shear blade 15. Hereinafter, this configuration will be described in order.

As shown in FIG. 2, the pair of delivery rolls 12 and 13 are connected via a gear 31 so as to rotate in mutually opposite directions, and the driving force of the motor 22 is transmitted to one roll 13. It is like this. Rotating shafts 13a and 13b are respectively provided at both ends of the roll 13 so as to be integrally rotatable, and the rotating shafts 13a and 13b are respectively provided with bearings 32.
It is rotatably supported by. One rotating shaft 13a
In addition to the gear 31, a brake mechanism 33 is attached to the. A large-diameter pulley 35 is mounted around the other rotating shaft 13b via a one-way clutch 34, and a small-diameter pulley 37 is mounted via another one-way clutch 36. Further, a torque limiter 38 is attached to the end of the rotary shaft 13b, and the rotation of each of the pulleys 35 and 37 is transmitted to the rotary shaft 13b (roll 13) via the torque limiter 38.

Below the pulleys 35 and 37, drive pulleys 41 and 42 are provided with a common drive shaft 43.
Is stuck to. The drive shaft 43 is rotatably supported by a pair of bearings 44, 44 fixed to the lower surface of the main body 11. The drive pulleys 41 and 42 have the same outer diameter, and an endless belt 45 is wound between the pulley 35 and the drive pulley 41, and an endless belt 46 is wound between the pulley 37 and the drive pulley 42.

One end of a link lever 47 is fixed to one end of the drive shaft 43 as shown in FIG. 1, and the other end of the link lever 47 is moved in the vertical direction so that the drive shaft 43 rotates in one direction. Has become. And link lever 4
The other end of 7 has a cam follower 47a in a cam groove (not shown) of a disk-shaped groove cam 48 fixed to the drive shaft 21d.
And the groove cam 48 rotates together with the drive shaft 21d, the other end of the link lever 47 moves vertically about the drive shaft 43, and the drive shaft 43 rotates in one direction. With the rotation of the drive shaft 43, the drive pulleys 41 and 42 rotate, and the delivery roll 13 rotates.

The relationship between the drive pulleys 41 and 42 and the rotation direction and rotation angle of the delivery roll 13 will be described with reference to FIG. To simplify the description, the outer diameter ratio of the drive pulley 41: the drive pulley 42: the small diameter pulley 37: the large diameter pulley 35 is 1: 1: 1: 2.

First, the relationship between the torque holding forces of the brake mechanism 33 and the torque limiter 38 is set such that the brake mechanism 33 <torque limiter 38.

The one-way clutch 34 on the large-diameter pulley 35 side is engaged by clockwise rotation as shown in FIG. 4 (c),
The one-way clutch 36 of the small diameter pulley 37 is shown in FIG.
It is configured to engage with each other by rotating counterclockwise as shown in.

As shown in FIG. 4A, when the drive pulley 41 makes one rotation in the clockwise direction, the large-diameter pulley 35 makes one-half rotation. At this time, the one-way clutch 34 is engaged, so that the delivery roll 13 is rotated clockwise. 1/2 turn, and the other delivery roll 12 (FIG. 1) makes 1/2 turn counterclockwise. The drive pulley 42 also makes one rotation in the clockwise direction and the small-diameter pulley 37 makes one rotation in the clockwise direction, but at this time, the one-way clutch 36 does not engage (is free), so that the rotational force is transmitted to the delivery roll 13. Not done. As a result, the rubber sheet 1 (FIG. 1) is pulled back upward.

When the drive pulley 42 makes one rotation counterclockwise as shown in FIG. 4B, the small diameter pulley 37 makes one rotation,
At this time, since the one-way clutch 36 is engaged, the delivery roll 13 makes one rotation in the counterclockwise direction and the other delivery roll 12 (FIG. 1) makes one rotation in the clockwise direction. The drive pulley 41 also makes one rotation in the counterclockwise direction and the large-diameter pulley 35 makes one-half rotation in the counterclockwise direction.
Since No. 4 does not engage (is free), the rotational force is not transmitted to the delivery roll 13. As a result, the rubber sheet 1 (FIG. 1) is fed downward.

The above operation and the operation of the shearing blade 16 for cutting the rubber sheet 1 are performed in the following order. That is, these operations are performed by the common motor 22.
Is performed by rotating the drive shaft 21d in one direction (for example, clockwise).

(1) First, the pivot point of the connecting link 21b on the crank disk 21a is at a position rotated 180 ° from the position indicated by the solid line in FIG. 1, and from this state, the drive shaft 21d is rotated by the rotation of the motor 22. When the cam follower 47a of the link lever 47 is lowered by a predetermined distance by the rotation of the cam 48, the drive shaft 43 rotates counterclockwise by a predetermined angle, and the drive pulley 42, the endless belt 46,
The delivery roll 13 is rotated counterclockwise and the delivery roll 12 is rotated clockwise through the small-diameter pulley 37 and the one-way clutch 36 to deliver the rubber sheet 1. At this time, the crank disk 21a also rotates clockwise with the cam 48.

(2) With the rotation of the crank disk 21a,
The shearing blade 16 advances through the connecting link 21b, the toggle device 20, the connecting rod 19, the load cell 18, and the support plate 17,
The rubber sheet 1 is cut by the cooperative action with the shearing blade body 15, and the pivotal fulcrum on the crank disk 21a is shown in FIG.
Rubber sheet band 3 cut forward by moving to the position indicated by the solid line
Push out. The rubber sheet band 3 is extruded into the passage formed by the lower surface of the shear blade body 15 and the upper surface of the resistance plate 25 as shown in the enlarged view of FIG. The load cell 18 detects the force for pressing the next rubber sheet band 3 onto the rubber sheet band 3 sent to the. When the pressing force is insufficient, the pulse motor 29 rotates and the resistance plate 25 rises. On the contrary, when the pressing force is excessive, the pulse motor 29 rotates in the opposite direction and the resistance plate 25 descends. . During this time, the position of the cam follower 47a of the link lever 47 on the cam 48 is maintained at a fixed position regardless of the rotation of the cam 48, and the cam follower 47a of the link lever 47 does not move up and down. The pressure bonding force varies depending on the type of rubber of the rubber sheet band 3, but is usually set in the range of 5 to 100 kg / cm ² .

(3) The pivot point on the crank disk 21a is shown in FIG.
Further rotates clockwise from the solid line position, the shearing blade 16 begins to retreat, and the cam follower 47a of the link lever 47 is raised by the rotation of the cam 48, so that the drive shaft 43 rotates clockwise by a predetermined angle. , The drive roll 41, the endless belt 45, the large-diameter pulley 35, and the one-way clutch 34 rotate the delivery roll 13 clockwise and the delivery roll 12 counterclockwise to pull the rubber sheet 1 upward. Be done. The pullback length of the rubber sheet 1 at this time is shorter than the delivery length as described above, and is set to, for example, half the delivery length.

As described above, each time the crank disc 21a and the cam 48 make one revolution, the above-mentioned operations are sequentially repeated, and a large number of cut rubber sheet bands 3 are obtained.
By laminating and pressure bonding as described above, the elastic body 5 containing a predetermined oriented short fiber is molded.

Although one embodiment has been introduced above, the molding machine of the present invention is not limited to this. For example, a) Reciprocating movement of the shearing blade 16 and forward / reverse rotation of the delivery roll 13 are performed by separate driving means, and the operation of each driving means is synchronized by using an electric control means. Good.

(B) The vertical movement of the resistance plate 25 may be directly performed by a cylinder device or the like without using the inclined plate 27 and the elevating plate 28.

C) The reciprocating power of the crank mechanism 21 may be directly transmitted to the shearing blade 16 without interposing the toggle device 20.

D) The resistance plate 2 for controlling the crimping force
The resistance plate facing the resistance plate 5 may not be shared by the lower surface of the shear blade body 15 and another resistance plate paired with the resistance plate 25 may be provided.
Further, a resistance plate on the fixed side is provided on the lower surface side of the rubber sheet band 3,
A resistance plate located on the upper surface side of the rubber sheet band 3 may be provided so as to be vertically movable.

[0044]

As is apparent from the above description,
According to the molding machine for an elastic body containing oriented short fibers of the present invention, the following excellent effects are obtained.

(1) The elastic sheet strips can be sequentially fed out while keeping the posture in the vertical direction, and the pressure force when the sheet strips are stacked and pressure-bonded is set so that the other resistance plate approaches the resistance plate on the fixed side. Alternatively, since the distance is adjusted so that the distance can be adjusted, the sheet strips cut into the predetermined size can be sequentially pressed to surely integrate them. Therefore, it is possible to mass-produce an elastic body containing short fibers having a high orientation rate by using an elastic sheet containing short fibers that is oriented by a sheet feeding method using a calendar roll.

(2) In the molding machine according to the second aspect, since the detector detects the pressing force when the shearing blade pushes out the elastic sheet strip, the interval between the pair of resistance plates is automatically adjusted. No need to adjust the crimping force when the bands are crimped together to integrate them, the operation is simple, and because the crimping force is always controlled accurately, unvulcanized rubber flows and the direction of the short fibers is changed. It does not change or a defective joining of the sheet band does not occur.

(3) In the molding machine according to claim 3, since the resistance plate on the fixed side is also used as the position surface of the shear blade body, the number of parts is reduced and the structure is simplified.

(4) In the molding machine according to claim 4, even if the cut portion of the elastic sheet adheres to the shearing blade or the like, it is peeled off, which hinders the next feeding operation of the elastic sheet. Never come

[Brief description of drawings]

FIG. 1 is a front view showing an embodiment of a molding machine of the present invention and a partially enlarged view thereof.

2 is a plan view of the molding machine of FIG. 1. FIG.

3 is a right side view of the molding machine shown in FIG. 1, partly in cross section.

4 (a) to 4 (d) are explanatory views showing the relationship between the drive pulleys 41 and 42 and the rotation direction and rotation angle of the delivery roll 13 in the molding machine of FIG. 1, respectively.

FIG. 5 is a perspective view, partly omitted, showing a process of forming an elastic body containing oriented short fibers by cutting an elastic sheet in which short fiber groups are oriented into predetermined dimensions.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 rubber sheet (elastic sheet) 2 short fibers 3 rubber sheet band (elastic sheet band) 5 elastic body containing oriented short fibers 10 molding machine 11 main body 12/13 delivery roll 14 guide device 15 shear blade body 16 shear blade 18 load cell 20 Toggle device 21 Crank mechanism 22 Motor 25 Resistance plate

Claims (4)

[Claims] 1. An elastic sheet in which short fiber groups are oriented in the longitudinal direction of the sheet is cut in a width direction at a predetermined size to form an elastic sheet band, and the elastic sheet band is oriented in the cut surface. A pair of delivery rolls for delivering the elastic sheet in predetermined dimensions, which is a molding machine for forming an elastic body containing oriented short fibers in which short fiber ends are exposed on both sides by sequentially stacking and pressing. A guide member that guides the elastic sheet along the feeding direction of the elastic sheet by the feeding roll, a shearing blade that is arranged with a predetermined interval from the guide member, and the elastic sheet that is fed out is sheared in the width direction thereof. A shearing blade that cuts in cooperation with the blade body and that can push out the cut elastic sheet strip in the cutting direction and reciprocate in synchronization with the rotation of the delivery roll, and the elastic sheet strip that is sequentially pushed out. Sandwiching the resistor plate, one of which is fixed and the other of which is fixed, parallel and close to each other.
A machine for forming an elastic body containing oriented short fibers, comprising: a pair of resistance plates that are arranged so as to be separated from each other. 2. A detector for detecting the pressing force when the elastic sheet strip is pushed out by the shearing blade is provided, and the interval between the resistance plate on the moving side and the resistance plate on the moving side is determined based on the value detected by the detector. The molding machine for an elastic body containing oriented short fibers according to claim 1, which is adjusted. 3. The molding machine for an elastic body containing oriented short fibers according to claim 1, wherein the resistance plate on the fixed side is constituted by one surface of the shear blade body. 4. The delivery roll is rotated by a predetermined angle in the delivery direction of the elastic sheet, the elastic sheet is delivered and cut by the shearing blade, and then the delivery roll is reversed by an angle smaller than the rotation angle. A machine for molding an elastic body containing oriented short fibers according to any one of claims 1 to 3, which is adapted to rotate in a direction.