JPS6317761A - Band plate tension giving device - Google Patents

Abstract

PURPOSE:To simplify a device in structure as a whole as well as to miniaturize it, by giving the extent of pressure uniformly to each slit band plate being pressed via an endless belt by a pressure giver utilizing hydraulic pressure, in case of the band plate tension giving device. CONSTITUTION:After a slit band plate 2 is passed through between outer surface where both upper and lower endless belts 3 are opposed with each other, fluid pressure of a pressure giver 4 pressing an inner surface of the endless belt 3 is raised up to the specified pressure. If so, with a property that all points in a fluid comes to the same pressure, the pressure giver 4 presses the whole range of the inner surface of the endless belt 3 coming into contact with the pressure giver 4 with the same pressure, thus the pressure giver 4 acts so as to uniformly give pressure to all parts of each slit band plate 2 to be indirectly contacted via the pressure giver 4 and the endless belt 3. And, each endless belt 3 is independently rotated each as one body without entailing any slip with the slit band plate owing to frictional engagement with each slit band plate 2, thus uniform tension is given to each slit band plate with frictional force between the pressure giver 4 and the endless belt 3.

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention is directed to a slick line in which a wide band is cut into a plurality of strips along the longitudinal direction of a temporary cough band, in which each slit band is cut after the slit of the band. This invention relates to a strip tensioning device that can adjust tension imbalances that occur when winding up a strip and apply uniform tension.

[Conventional technology]

Generally, the cross section of a wide strip is not completely flat, but is thicker in the center and thinner at both ends. When slitting this, the thickness of each slit strip after slitting varies between the center and both ends of the strip. occurs.

When each of these slit strips is wound with a mandrel, a thicker slit strip has a larger winding diameter than a thinner one, and there is a difference in the winding pattern of each slit strip at the center and both ends. This results in an imbalance in the tension in each slit strip wound onto the mandrel. As a result, the slit strip at both ends wound around the mandrel becomes softer than the center, and when removed from the mandrel, becomes telescopic or crushed into an oval shape, making it difficult to unwind or transport. There was a drawback that it became impossible.

For this reason, tension was applied to the slit strip using a roller type tensioning device or a tension pad method to prevent each slit strip 7) wound around the mandrel from becoming loosely wound. In the case of a tension pad, the tension of each slit strip becomes unbalanced due to the deviation in the plate thickness, and in the case of a tension pad, scratches occur on the surface of the slit strip.

Therefore, the applicant has developed a strip tension applying device (Patent Application No. 1986-1500) that adjusts the imbalance in the winding tension due to the thickness deviation of each slit strip without damaging the surface of each slit strip.
2545) was invented.

This belt tension applying device utilizes an endless belt, in which a plurality of endless belts stretched between a pair of pulleys are arranged in the horizontal direction, and the upper and lower endless belts are arranged vertically. A slit strip is passed between the opposing outer surfaces of the endless strip, and on the inner surface of the endless strip, a pressing member is used to press and press the endless strip against the slit strip from above and below, and the endless strip becomes one with the moving slit strip. This is a mechanism that generates tension in the slit strip by rotating the endless strip and using frictional force caused by sliding between the pressing body and the inner surface of the endless strip, and the friction coefficient of the outer surface of the endless strip is By making the slit band larger than the inner surface, the slit band plate and the endless band can be wound without slipping and the slit band plate can be wound without damage.

[Problem that the invention seeks to solve]

By the way, the pressing body constituting the above-mentioned strip tension applying device extends in a direction perpendicular to the moving direction of each slit strip, and both ends thereof are interlocked and connected to a cylinder mechanism.
The driving force of the cylinder mechanism was used to press and press each endless band against each slit band plate.

At this time, if the pressing body is a completely rigid body, when both ends of the pressing body are pressed by the cylinder mechanism, the pressing body will be able to cover all of the slit strips that are in indirect contact with the cough pressing body through the endless band. However, since the pressing body is not a completely rigid body, when applying pressure to each slit strip, compared to the slit strip near both ends where the cylinder mechanism is connected, There was a problem in that the pressure on the central slit band plate was likely to become weak.

In addition, the cylinder mechanism, which serves as a drive source for applying pressure to each slit strip, has a complicated structure and is difficult to downsize. Therefore, it has been difficult to make the overall structure of the device simple and compact.

This invention was devised in view of the above-mentioned problems and to solve the problems, and its purpose is to spread the slits evenly across each slit strip that is pressed through the endless strip. To provide a strip tensioning device that can apply pressure to the strip, and that can simplify and downsize the entire device by eliminating the need for a cylinder mechanism that has a complicated structure and is difficult to miniaturize. be.

[Means for solving problems]

In order to achieve the above object, the present invention arranges a plurality of rotatably held endless bands in the horizontal direction, and arranges the upper and lower endless bands to face each other vertically. A pressing body placed on the inner surface side of the endless band presses the endless band from above and below against the slit band plate passed between the outer surfaces, and the friction between each endless band and each slit band plate moves. The slit strips are rotated independently together with the moving slit strips, and the slit strips are rotated by the frictional force caused by the sliding between the pressing body and the inner surface of the endless strips. In the band tension applying device for generating tension, at least one of the pressing bodies is constituted by a pressure applying body that evenly presses the inner surface of the endless band with fluid pressure.

[Effect]

The present invention having the above configuration operates as follows.

After passing the slit strip between the opposing outer surfaces of the upper and lower endless strips, when the fluid pressure of the pressure applying body that presses the inner surface of the endless strip is increased to a constant pressure, all of the fluid in the fluid is increased. Due to the property that points are under the same pressure, the pressure applying body presses the entire range of the inner surface of the endless band that is in contact with the pressure applying body with the same pressure, and the pressure applying body It acts so as to equally apply pressure to all of the slit strips that are indirectly in contact with each other through the slit strips.

Then, each endless band rotates independently without slipping due to frictional engagement with each moving slit band plate, and the pressure applying body and the endless band rotate. The frictional force caused by sliding between the inner surface and the inner surface acts to apply equal tension to each slit strip without damaging the surface of the slit strip.

〔Example〕

Hereinafter, the present invention will be described in more detail based on embodiments shown in the drawings.

Here, FIG. 1 is a front view of the strip tensioning device, FIG. 2 is a side view of the strip tensioning device, and FIG. 3 is an enlarged side view of the main parts of the strip tensioning device.

In the figure, reference numeral 1 denotes a strip tension applying device that applies a predetermined tension to the slit strip 2, and the strip tension applying device 1 is located on the front side of a slit strip winding device (not shown), and is located on the moving path of the slit strip 2. It is located in the middle of. Strip tension applying device 1
is an endless band 3 which is rotatably held vertically facing each other.
, a pressure applying body 4 that presses the inner surface 3a of the endless band 3, and a pressing body 5. The pressure applying body 4 presses the endless band 3 disposed on the lower side upward, while the pressing body 5 presses the endless band 3 disposed on the upper side downward.

The endless bands 3 are arranged so as to be rotatable in the moving direction of the slit band plate 2, and a plurality of endless bands 3 are arranged side by side in the lateral direction, that is, in the direction orthogonal to the moving direction of the slit band plate 2, and furthermore, these are arranged vertically. are placed opposite each other. Each of the endless bands 3 arranged vertically in parallel is stretched around each pulley 6, respectively.

The outer surface 3b of the endless band 3 functions to move the slit band plate 2 integrally with the slit band plate 2. On the other hand, the inner surface 3a of the endless band 3 functions to generate tension in the slit band plate 2 by the frictional force caused by sliding with the pressure applying body 4 or the pressing body 5.

Due to these differences in function, the outer surface 3b of the endless band 3
is formed of a material having a larger coefficient of friction than the inner surface 3a. For example, the outer surface 3b is made of soft urethane resin or rubber, and the inner surface 3a is made of hard nylon, copper plate, or the like.

The pulleys 6 located on the lower and upper sides are freely rotatably attached to rotating shafts 7 and 8 provided horizontally on the lower and upper sides, respectively. That is, each pulley 6 is pivoted so that it can rotate independently in the direction of movement of the slit strip plate 2, and thereby each endless band 3 can rotate independently in the direction of movement of the slit strip plate 2. It has become.

In addition, each pulley 6 is rotatably supported on the rotation shafts 7 and 8.
Since no driving source is attached to the endless band 3, the endless band 3 does not rotate by its own blade other than by frictional engagement with the moving slit band plate 2. In other words, the endless band 3 does not rotate unless it comes into contact with the slit band plate 2.

The rotating shafts 7 and 8 are disposed perpendicularly to the moving direction of the slit strip plate 2, and are inserted through the inside of the endless strip 3. Of these, both ends of the rotating shaft 7 horizontally installed on the lower side extend from the sides of the endless band 3 and are supported by bearings 7a provided on the lower surface of a holder 11, which will be described later. Further, both ends of a rotating shaft 8 horizontally installed on the upper side protrude from the sides of the endless band 3 and are supported by bearings 8a provided on the upper surface of the pressing body 5. These bearings 7a, 8a are configured to move up and down by, for example, screw movement.
The tension of each endless band 3 can be adjusted by raising and lowering the rotary shafts 7.8 by raising and lowering the rotary shafts 13a, and by means of the pulleys 6 that are freely rotatably attached to the rotary shafts 7 and 8, respectively.

The pressure applying body 4 is disposed so as to pass through the inner side of the endless band 3 disposed on the lower side. The pressure applying body 4 disposed in such a state is applied to the inner surface 3a of the endless band 3.
A pressure bonding plate 9 that directly presses the pressure bonding plate 9, an expansion and contraction body 10 that presses the pressure bonding plate 9 against the inner surface 3a of the endless band 3, and a holder 11 that holds these pressure bonding plates 9 and the expansion and contraction body 10 from below. The crimping plate 9 has a plate shape with a constant width, length, and thickness, and its longitudinal direction is orthogonal to the moving direction of the slit strip plate 2. It is inserted through the inside of 3. The upper surface of the pressure bonding plate 9, which is in contact with the inner surface 3a of the endless band 3, is finished flat so that the inner surface 3a of the endless band 3 can be pressed uniformly. Further, the upper surface of the pressure bonding plate 9 is finished so as to reduce g-friction with the inner surface 3a of the endless band 3.

The width direction of the pressure bonding plate 9 is the same direction as the moving direction of the slit strip plate 2, and each endless band 3 rotates in the width direction of the pressure bonding plate 9. Therefore, the thicker sides of both width edges of the upper surface of the pressure bonding plate 9 are finished in an arc shape, and roller devices 19a are provided on both width sides of the holder 11 below the pressure bonding plate 9, and the endless band 3 is connected to the pressure applying body 4. It is designed to allow smooth rotation around the Additionally, cooling grooves 9b are provided inside the crimp plate 9. By changing the width dimension of this crimp plate 9,
The contact area between the endless band 3 and the slit band plate 2 can be increased or decreased.

Further, the width dimension of the crimp plate 9 is determined by taking into account the space of the line where the strip tension applying device 1 is installed, and in particular,
By reducing the width dimension of the crimp plate 9, the dimensions of the strip tension applying device 1 in the line direction can be reduced, making it possible to install the strip tension applying device 1 even in locations where there is insufficient installation space. .

The expansion and contraction body 10 is held between an upper pressure bonding plate 9 and a lower holding body 11 in a vertically sandwiched state. The expansion/contraction body 10 has a hollow shape having a certain width, length, and thickness, and its longitudinal direction is a slit strip plate. It is disposed in a direction perpendicular to the direction of movement of the belt 3, and is inserted through the inside of the endless belt 3. The expansion and contraction body 10 is a hollow body with a fluid sealed inside.
It is made of a sealing material that prevents internal fluid from leaking, and is also made of a material that is highly expandable and expandable, such as synthetic resin.

The expansion and contraction body 10 expands and contracts due to the pressure of the internal fluid, and uniformly presses the lower surface of the pressure bonding plate 9 disposed on the upper surface side based on the properties of the fluid pressure. The expansion and contraction body 10 can press the slit strip plate 2 uniformly through the pressure bonding plate 9. Furthermore, by changing the pressure of the fluid inside the expansion/contraction body 10, the pressing force for pressing the crimp plate 9 can be changed, and the pressing force for pressing the slit strip plate 2 via the crimp plate 9 can be changed. For example, air, oil, etc. are used as the fluid.

Like the pressure bonding plate 9 and the expansion/contraction body 10, the holding body 11 is also arranged with its longitudinal direction perpendicular to the moving direction of the slit band plate 2, and is inserted through the inside of the endless band 3. . The holding body 11 that holds the pressure bonding plate 9 and the expansion/contraction body 10 is made of a material and shape having a certain degree of rigidity, and is fixed to a pair of bases 15 on both sides. The holder 11 fixed to the pair of bases 15 reliably supports the pressure bonding plate 9 and the expansion/contraction body 10 from below.

The pressing body 5 is disposed so as to pass through the inside of the endless band 3 disposed on the upper side. The pressing body 5 disposed in this manner includes a pressure bonding plate 12 that directly presses the inner surface 3a of the endless band 3, and a holder 13 that holds the pressure bonding plate 12 from above.

The lower surface of the pressure bonding plate 12 in contact with the inner surface 3a of the endless band 3 is parallel to the upper surface of the pressure bonding plate 9 constituting the pressure applying body 4 and is finished flat, so that the inner surface 3a of the endless band 3 is uniformly It can be pressed. Further, the lower surface of the pressure bonding plate 12 is finished so as to reduce friction with the inner surface 3a of the endless band 3.

The width direction of the pressure bonding plate 12 is the same direction as the moving direction of the slit band plate 2, and each endless band 3 rotates cyclically in the width direction of the pressing body 5. For this reason, the thicker sides of both width edges of the lower surface of the pressure bonding plate 12 are finished in an arc shape, and roller devices 12a are provided on both width sides of the holder 13 above the pressure bonding plate 12, and the endless band 3 is attached to the pressing body 5. It is designed so that it can be rotated smoothly.

Furthermore, cooling grooves 12b are provided inside the crimp plate 12.

The width dimension of the crimp plate 12 is the same as the width dimension of the crimp plate 9, and the slit strip plate 2 passing between the endless strips 3 facing each other vertically is pressed in the same manner from above and below. hand,
It is possible to apply a constant tension.

The holder 13 that holds the pressure bonding plate 12 from above is made of a material and shape having a certain degree of rigidity, and is fixed to the pair of bases 15. Like the pressure bonding plate 12, this holder 13 is also disposed with its longitudinal direction perpendicular to the moving direction of the slit band plate 2, and is inserted through the inside of the endless band 3.

A holder 13 fixed to a base 15 reliably holds the pressure bonding plate 12 from above.

A recess 15a for fixing the holder 11 is formed in the center of the upper surface of the base 15, and a fixing base 14 is attached to the upper surface of the base 15. A recess 14a is formed in the center of the upper surface of the fixing base 14 for fixing a holder 13 of the pressing body 5, which will be described later. A hole 14C for a locking mechanism is formed in the left and right side wall surfaces 14b of the recess 14a, and a hole 13a is also formed in the side surface of the holder 13, which will be described later.
A locking rod 14d is inserted into these holes 13a and 14c. The fixed stand 14 is fixed to the base 15 with bolts 17.

The aforementioned holder 11.13 supports the drive device 1 around the pivot shafts 16a and 16b of the support column 16 fixed to the side surface of the base 15.
It can be tilted up and down as the sun expands and contracts.

Further, the substrate 20 to which the base 15 is attached is connected to the driving device 1
9, it is configured to be movable in a direction perpendicular to the moving direction of the slit strip plate 2.

Next, the operation of the strip tension applying device based on the configuration of the above embodiment will be explained.

After passing the slit band plate 2 between the outer surfaces 3b of the vertically opposing endless bands 3, fluid is pressurized into the expansion and contraction body 10 that constitutes the pressure applying body 4, and the expansion and contraction body 10 is expanded. .

The fluid is forced to expand and contract using a pump (not shown).
It is press-fitted inside.

The expanded inflatable body 10 presses the holding body 11 and the pressure bonding plate 9 that are in vertical contact with the cough inflatable body 10, but due to the property that all points in the fluid have the same pressure, the inflatable body 10 presses against the pressure bonding plate 9. The entire range of the holding body 11 and the pressure bonding plate 9 in contact with the expansion/contraction body 10 is pressed with the same pressure.

At this time, while the holding body 11 is completely fixed to the base 15, the pressure bonding plate 9 is supported by the holding body 11 in a vertically movable manner by the expandable and contractible body 10. The amount of vertical expansion of the inflatable body 10 is entirely determined by the pressure bonding plate 9.
is converted into an amount that moves the amount upward. If there is a slight gap between the upper surface of the crimp plate 9 and the inner surface 3a of the endless band 3, the crimp plate 9 moves upward and the upper ml of the crimp plate 9 is removed.
completely adheres to the inner surface 3a of the endless band 3.

On the other hand, when the upper surface of the crimp plate 9 is in complete contact with the inner surface 3a of the endless pin 3, it becomes integral with the crimp plate 9 pressed upward by the fluid pressure of the expansion and contraction body 10, and forms an endless shape. The band moves upward, and the outer surface 3b of the endless band 3, which is in close contact with the crimp plate 9, comes into complete contact with the surface of the slit band plate 2.

After the outer surface 3b of the endless strip 3 is completely in contact with the back surface of the strip 7), press the slit strip 2 upward,
The outer surface 3b of the upper endless strip 3 and the surface of the slit strip plate 2 are brought into close contact to generate a reaction force, and the outer surfaces 3b of the upper and lower opposing endless strips 3 are attached to the slit strip plate 2 from above and below.
Press the front and back sides with the same pressure. At this time, the expanding body 1
Due to the property that all points in the fluid at zero have the same pressure, an equal pressure is applied to the entire range of the front and back surfaces of the slit strip plate 20 that is in close contact with the outer surfaces 3b of the upper and lower opposing endless strips 3. be done.

Then, when winding of the slit band plate 2 is started, the front and back surfaces of the moving slit band plate 2 and the outer surface 3b of the endless band 3 are
Due to the frictional engagement with the upper and lower endless bands 3, the upper and lower endless bands 3 rotate in a circular manner. At this time, each endless band 3 rotates independently of the moving slit band plate 2 in unison with each slit band plate 2 without slipping. On the other hand, due to the sliding force between the pressure bonding plates 9 and 12 constituting the pressing body 5 and the pressure applying body 4 and the inner surface 3a of the endless band 3, the moving slit band plate 2 The crimping strip 9° 12 that presses the inner surface 3a of the endless strip 3 which circulates and rotates through frictional engagement with the slit strip winding device and the strip tensioning device (not shown) performs a so-called brake-like function. A constant tension is generated in each slit strip plate 2 located between the

This invention is not limited to the above-described embodiments, and it goes without saying that various modifications can be made without departing from the spirit of the invention. For example, in the above embodiment, the inner side of the endless band 3 disposed on the upper side is pressed by the pressing body 5, but the pressure applying body 4 may be used instead of the pressing body 5. Alternatively, the pressure applying bodies 4 and 5 disposed on the lower side and the upper side may be reversed, that is, the pressing body 5 may be disposed on the lower side and the pressure applying body 4 may be disposed on the upper side.

〔Effect of the invention〕

As is clear from the above description, according to the strip tension applying device according to the present invention, due to the property that all points in the fluid have the same pressure, the pressure applying body is an endless body in contact with the pressure applying body. Since the entire inner surface of the endless strip is pressed with the same pressure, pressure can be equally applied to all of the slit strips that are in indirect contact with the pressure applying body via the endless strip.

This makes it possible to reliably adjust the tension imbalance that occurs when winding each slit strip and apply even tension, making it possible to fully utilize the excellent advantages of this device. becomes.

In addition, by simply increasing the fluid pressure of the pressure applying body, pressure can be applied evenly to the entire range of the slit band, making it possible to eliminate the need for a cylinder mechanism that has a complicated structure and is difficult to miniaturize. The overall structure can be made simple and compact.

In addition, since the structure of the entire device is simple and compact, extremely novel and beneficial effects such as easier maintenance and inspection work can be achieved.

[Brief explanation of the drawing]

The drawings show an embodiment of the strip tensioning device according to the present invention, in which FIG. 1 is a front view of the strip tensioning device, FIG. 2 is a side view of the strip tensioning device, and FIG. 3 is a side view of the strip tensioning device. FIG. 2 is an enlarged side view of the main parts of the strip tension applying device. [Explanation of symbols]

Claims (1)

[Claims] A plurality of rotatably held endless bands are arranged horizontally and vertically facing each other, and a slit band plate is passed between the opposing outer surfaces of the upper and lower endless bands. A pressing body placed on the inner surface side of the endless band presses and crimps the endless band from above and below, and each endless band is driven by frictional engagement with each moving slit band plate. A strip tensioning device that rotates each endless strip independently as a unit to generate tension in the slit strip by frictional force caused by sliding between the pressing body and the inner surface of the endless strip. A strip tension applying device characterized in that at least one of the pressing bodies is constituted by a pressure applying body that evenly presses the inner surface of the endless strip using fluid pressure.