JP6969050B2 - Horizontal stretching machine with vertical contraction function for sheet-like objects - Google Patents

Description

The present invention relates to a stretching machine for stretching a sheet-like material such as a thermoplastic resin film, and more particularly to a lateral stretching machine having a vertical shrinkage function of the sheet-like material.

Conventionally, as a stretching machine for stretching a sheet-like object, a plurality of equal-length link devices formed in a folded shape provided with a gripping device for gripping a side end portion of the sheet-like object are endlessly connected to each other. It is equipped with a device and is arranged on both sides of the sheet-like object along a closed path formed on a substantially horizontal plane that returns from the inlet side for introducing the sheet-like object to the inlet side via the outlet side for sending out the sheet-like object. By running a plurality of equal-length link devices along a closed route with the guidance of the outer peripheral side guide rail and the inner peripheral side guide rail, the sheet-like object is conveyed from the inlet side to the exit side, and the sheet-like object is conveyed. Proposed to be configured to be simultaneously stretched in the vertical direction (MD direction) along the transport direction of the above and in the horizontal direction (TD direction) along the width direction of the sheet-like object forming a right angle to the sheet, and then sent out from the outlet side. , Practical use (see, for example, Patent Documents 1 to 3).

Special Fair No. 5-4896 Gazette Japanese Patent No. 4379306 Japanese Patent No. 4802919

On the other hand, in recent years, with the diversification of materials and functions of sheet-like materials, there has been a demand for stretching in one direction and shrinking in the other direction, and further stretching in one direction and then shrinking.

The present invention follows the basic configuration of a stretching machine for stretching a sheet-like material that has been conventionally used, and with a simple structure, the sheet-like material can be stretched in one direction and contracted in the other direction, and further. It is an object of the present invention to provide a lateral stretching machine having a vertical shrinking function of a sheet-like material that can be stretched in one direction and then contracted.

In order to achieve the above object, the lateral stretching machine provided with the vertical shrinkage function of the sheet-like material of the present invention is used.
It is provided with an endless link device in which a plurality of equal-length link devices formed in a folded shape are connected in an endless manner, and is provided with a gripping device for gripping the side end portion of the sheet-like object. The outer peripheral side guide rail and the inner peripheral side guide rail are arranged along a closed path formed on a substantially horizontal plane that returns to the inlet side from the inlet side for introducing the shaped object through the outlet side for sending out the sheet shaped object. By guiding the plurality of equal length link devices along the closed path by the guidance of the outer peripheral side guide rail and the inner peripheral side guide rail, the sheet-like material is conveyed from the inlet side to the outlet side. At the same time, the sheet is configured to be stretched in the horizontal direction along the width direction of the sheet-like material forming a right angle to the transport direction of the sheet-like material, and at the same time to be contracted in the vertical direction along the transport direction and then sent out from the outlet side. In a horizontal stretching machine equipped with a vertical contraction function for an object,
An inlet side region in which the outer peripheral side guide rails and the inner peripheral side guide rails facing each other on both sides of the sheet-like object are arranged in parallel, and the distance between the outer peripheral side guide rail and the inner peripheral side guide rail is arranged at the first distance interval. The laterally stretched and longitudinally contracted regions, which are connected to the inlet side region and have the outer peripheral side guide rail and the inner peripheral side guide rail arranged in a divergent manner toward the transport direction of the sheet-like material, and the laterally stretched and The first distance is such that the outer peripheral side guide rail and the inner peripheral side guide rail that are connected to the vertical contraction region and face each other on both sides of the sheet-like object are parallel to each other, and the distance between the outer peripheral side guide rail and the inner peripheral side guide rail is set. It has an exit side area arranged at a second distance interval wider than the interval, and has.
The first distance between the outer peripheral side guide rail and the inner peripheral side guide rail arranged in the inlet side region is set so that the link plates of the equal length link device are aligned on the inner peripheral side guide rail. It is characterized by being set.

In this case, the outer peripheral side guide rail and the inner peripheral side guide rail are arranged in a constricted manner in the direction of transporting the sheet-like material between the lateral stretching and longitudinal contracting regions and the outlet side region. It can be made to have a lateral contraction region.

According to the lateral stretching machine provided with the vertical contraction function of the sheet-like object of the present invention, the outer peripheral side guide rail and the inner peripheral side guide rail facing each other on both sides of the sheet-like object are parallel and the outer peripheral side guide. The inlet side region in which the distance between the rail and the inner peripheral side guide rail is arranged at the first distance interval and the inlet side region are connected to each other, and the outer peripheral side guide rail and the inner peripheral side guide rail are directed in the transport direction of the sheet-like object. The outer peripheral side guide rails and the inner peripheral side guide rails that are connected to the lateral stretching and longitudinal contraction regions and face each other on both sides of the sheet-like object are parallel to the laterally stretched and longitudinally contracted regions arranged in a divergent shape. In addition, by having an outlet side region in which the distance between the outer peripheral side guide rail and the inner peripheral side guide rail is arranged at a second distance interval wider than the first distance interval, the sheet conventionally used has been used. While following the basic configuration of the stretching machine that stretches the material, it is possible to use a sheet-like material that is stretched in the horizontal direction, contracted in the vertical direction, or further stretched on the original fabric of the sheet-like material with a simple configuration. This allows the sheet-like material stretched in the vertical direction to be shrunk.
Then, the link plates of the equal-length link device are arranged in a straight line at the first distance between the outer peripheral side guide rail and the inner peripheral side guide rail arranged in the inlet side region, and are located on the inner peripheral side guide rail. By setting the above, the shrinkage length and shrinkage rate in the vertical direction of the sheet-like object can be set large, and the driving force can be transmitted between the equal-length link devices and the outer peripheral side guide rail and the outer peripheral side guide rail. The guide rail on the inner peripheral side can be guided smoothly.

Further, in the lateral direction, the outer peripheral side guide rail and the inner peripheral side guide rail are arranged in a constricted manner in the transport direction of the sheet-like material between the lateral stretching and longitudinal contracting regions and the outlet side region. By having a contraction region, the sheet-like material can be stretched laterally and then contracted.

It is a top view which shows an Example of the lateral stretching machine provided with the vertical contraction function of the sheet-like material of this invention. It is explanatory drawing which shows typically the main part of the guide rail and the equal length link device of the stretching machine. It is a top view which shows the open state of the link plate of the equal length link device of the stretching machine. It is a top view which shows the state which the link plate of the equal length link device of the stretching machine is closed. The isometric link device of the stretching machine is shown, (a) is a sectional view taken along the line XX of FIG. 3, (b) is a bottom view of (a), and (c) is a right side view of (a). FIG. 3 is a sectional view taken along the line YY of FIG. 3 of the equal length link device of the stretching machine. It is a ZZ sectional view of FIG. 3 of the equal length link device of the stretching machine.

Next, an embodiment of the lateral stretching machine provided with the vertical contraction function of the sheet-shaped object of the present invention will be described with reference to the drawings.

This lateral stretching machine having a function of shrinking the sheet-like material in the vertical direction is in the front-rear direction (horizontal direction in FIG. 1) in the central portion in order to convey the sheet-like material 1 made of the thermoplastic resin or the like to be processed. It is provided with a transport space provided so as to extend to, and a pair of endless link devices 3 arranged on both sides of the transport space so as to sandwich the transport space.
In this stretching machine, the inlet side region (preheating region) A, the lateral stretching and longitudinal contraction regions B, and the outlet side region (heat fixing region) C are set so as to be sequentially connected in the transport direction of the sheet-like material 1. There is.

Similar to Patent Documents 1 to 3, the endless link device 3 is formed by connecting a plurality of equal-length link devices 2 formed in a folded shape having a gripping device 18 for gripping the side end portion of the sheet-like object 1 in an endless manner. It is something that has been done.
The plurality of equal-length link devices 2 connected in an endless manner are meshed with the required inlet-side sprocket 4 and outlet-side sprocket 7 arranged at predetermined positions on the inlet side and the outlet side of the sheet-like object 1 in the transport space. ing.
Further, the plurality of equal-length link devices 2 are connected in an endless manner to form an endless link device 3, and return to the inlet side from the inlet side where the sheet-like object 1 is introduced to the outlet side where the sheet-like object 1 is sent out. It is placed on the outer peripheral side guide rail 5 and the inner peripheral side guide rail 6 arranged along the closed path formed on the horizontal plane via the support rollers 14a and 14b, and travels along the closed path. It has been made.
In the following, when it is not necessary to distinguish between the outer peripheral side guide rail 5 and the inner peripheral side guide rail 6, they are collectively referred to as “guide rails 5 and 6”.

The endless link device 3 is driven by the inlet side sprocket 4. Then, the gripping device 18 is opened and closed by an opening / closing means (not shown) such as an opening / closing guide provided on the inlet side to grip the sheet-like object 1, and in the preheating region (entrance side region) A, the lateral stretching and the vertical direction are performed. It is heated to the temperature required to shrink. Further, the endless link device 3 is guided by the guide rails 5 and 6 arranged in a divergent manner in the traveling direction in the lateral stretching and longitudinal contracting regions B, and the gripping pitch is gradually reduced from P1 to P2. , The sheet-like material 1 is stretched in the horizontal direction (TD direction) along the width direction of the sheet-like material 1 at right angles to the transport direction of the sheet-like material 1, and at the same time, in the vertical direction (MD direction) along the transport direction. After shrinking, heat is fixed at a predetermined temperature in the heat fixing region (outlet side region) 7, a cooling region (not shown) is provided as necessary for rapid cooling, and the opening / closing guide or the like provided on the outlet side is opened / closed. The gripping device 18 is opened and closed by means (not shown) to remove the sheet-like object 1, and the removed sheet-like object 1 is allowed to proceed as it is. Further, the endless link device 3 is driven by the outlet side sprocket 7 and is configured to return to the inlet side sprocket 4.

Here, as shown in FIG. 2A, the outer peripheral side guide rail 5 and the inner peripheral side guide rail 6 are placed between the lateral stretching and longitudinal contracting regions B and the outlet side region C of the sheet-like object 1. It is possible to have a lateral contraction region B'arranged in a slightly constricted shape (to shrink) in the transport direction. Thereby, the sheet-like material 1 can be stretched in the lateral direction and then slightly contracted.

As described above, the lateral stretching machine provided with the vertical contraction function of the sheet-like object is provided with a large number of gripping devices 18 for gripping the end portions of the sheet-like object 1 at both end ends of the sheet-like object 1. A link device 3 is provided, and the endless link device 3 is composed of a large number of equal-length link devices 2 formed in a folded shape, is driven by the inlet side sprocket 4 of the sheet-like object 1, and is arranged in a divergent shape in the traveling direction. Guided by the guide rails 5 and 6, the sheet-like object 1 is stretched in the lateral direction (TD direction) along the width direction of the sheet-like object 1 perpendicular to the transport direction of the sheet-like object 1 and at the same time. It is configured to be contracted in the vertical direction (MD direction) along the transport direction, then the sheet-like object 1 is removed, driven by the outlet side sprocket 7, and returned to the inlet side sprocket 4.

Here, as the gripping device 18, a device having a small gripping force, specifically, a device having a small gripping force in the MD direction can be used, whereby the device can be simplified.

The guide rails 5 and 6 have a rectangular cross section, and form a pair extending in parallel with the outer peripheral side guide rail 5 on the sheet-like material side and the inner peripheral side guide rail 6 on the anti-sheet-like material side. There is.

A link shaft holder 10 (first link shaft holder) is arranged above the outer peripheral side guide rail 5 so as to straddle the guide rail 5, and two pairs of horizontal rollers (radial bearings) 12 (12a to 12d) are vertically arranged below both sides thereof. It is mounted rotatably around the shaft.

A link shaft holder 11 (second link shaft holder) is arranged above the inner peripheral side guide rail 6 so as to straddle the guide rail 6, and a pair of lateral rollers (radial bearings) 13 are placed around the vertical axis below both sides thereof. It is mounted rotatably.

The lateral rollers 12 and 13 are arranged so as to roll across both side surfaces of the guide rails 5 and 6 that regulate the movement of the equal length link device 2, and the guide rails 5 and 6 are always arranged by the action (rotation) thereof. The link shafts 8 and 9 (described later) are moved at high speed by changing (rotating) while substantially perpendicular to both side surfaces of the above, and the equal length link device 2 is guided to the guide rails 5 and 6. It is designed to be able to run at high speed.

The link shaft holder 10 is formed with a mounting portion 17 projecting toward the sheet-like object (protruding substantially vertically), and the mounting portion 17 is provided with a gripping device 18. The gripping device 18 is arranged close to the guide rail 5 so that the protrusion distance from the guide rail 5 is small, and is provided so that the movement of the gripping position is small even if the link shaft holder 10 swings. ing.

On the opposite surface of the link shaft holder 10, a link shaft 8 for rotatably connecting the link plates 15 and 16 constituting the folding portion of the equal-length link device is attached. Since the gripping device 18 is arranged close to the guide rail 5, the link shaft 8 of the link shaft holder 10 is provided at a position deviated from the center of the guide rail 5 toward the guide rail 6.

A link shaft 9 is provided at the lower end of the link shaft holder 11 so as to be located substantially directly above the center of the guide rail 6. The link shaft 9 is a link shaft for rotatably jointing the link plates 15 and 16 together with the link shaft 8.

The link shaft holder 10 has a pair of horizontal rollers 12a and 12d that sandwich the guide rail 5, and a pair of horizontal rollers 12b and 12c that sandwich the guide rail 5. A large number of link shaft holders 10 having the above configuration are arranged side by side along the guide rail 5. On the other hand, the link shaft holder 11 has a pair of horizontal rollers 13 that sandwich the guide rail 6, and a large number of the link shaft holders 11 are arranged side by side along the guide rail 6.

Since the link shaft holder 10 is in contact with both side surfaces of the guide rail 5 by two pairs of horizontal rollers 12a to 12d (four pieces) (two-point contact), the posture is regulated by the guide rail 5. Therefore, the posture of the gripping device 18 attached to the link shaft holder 10 is also restricted, and the link plates 15 and 16 shown in FIG. 3 are in an open state (link plates 15 and 16 are arranged in a straight line and the inner peripheral side guide rails are arranged. In both the state where the link plates 15 and 16 shown in FIG. 4 are closed) and the state where the link plates 15 and 16 shown in FIG. 4 are closed, they always protrude toward the sheet-like object 1 in a direction substantially perpendicular to the guide rail 5 (vertical direction). The posture is maintained.

On the other hand, since the link shaft holder 11 is in contact with both side surfaces of the guide rail 6 one by one (one-point contact) by the pair of horizontal rollers 13 and 13, the posture is increased by the guide rail 6 as compared with the link shaft holder 10. Is not strongly regulated and can rotate about the link shaft 9 within a mechanical play range, so that smooth operation is performed when moving along the guide rail 6.

In this embodiment, the horizontal rollers 12a to 12d are moved up and down on the link shaft holder 10, the diagonal horizontal rollers 12b and 12d are positioned above the guide rail 5, and the diagonal horizontal rollers 12a and 12c are positioned downward. It is located in each of them. Due to this vertical relationship, the distance from the positions of the lateral rollers 12b and 12d that support the reaction force to the gripping device 18 can be shortened, and the bending during this period can be reduced. Therefore, by reducing the deflection, it is possible to suppress a change in the gripping position of the sheet-like object 1 of the gripping device 18, and it is possible to perform stretching with high accuracy. Here, the horizontal roller on the sheet-like object side and the inlet side is 12b, and the diagonal horizontal roller is 12d.
The horizontal rollers 12b and the horizontal rollers 12d are provided on the link shaft holder 10 so as to sandwich the upper portion of the guide rail 5, and the horizontal rollers 12a and 12c are provided from the lower end of the link shaft holder 10 so as to sandwich the lower portion of the guide rail 5. It is provided at the tip of the protruding support shaft 12e.

Since the link shaft holder 10 has two pairs of horizontal rollers 12a to 12d arranged side by side, a large installation space is required in the direction along the guide rail 5 as compared with the pair of horizontal rollers. do.
In this embodiment, the horizontal rollers adjacent to the link shaft holder 10 are vertically shifted and overlapped with each other to suppress the installation space along the guide rail 5.
That is, since the support shaft 12e protrudes by the thickness of the lateral roller 12b and the lateral roller 12d or more, the lateral roller 12a and the lateral roller 12b and the lateral roller 12c and the lateral roller 12d are overlapped in the lateral direction without contacting each other. Can be placed. Therefore, the installation space of the horizontal rollers 12a and the horizontal rollers 12b along the guide rail 5 is suppressed by this overlap.

Further, when a large number of link shaft holders 10 having the above configuration are arranged side by side along the guide rail 5, the horizontal rollers 12a and the horizontal rollers 12b and the horizontal rollers 12c and the horizontal rollers 12d of the adjacent link shaft holders 10 are adjacent to each other. In this embodiment, since the horizontal rollers of the adjacent link shaft holder 10 are separated from each other in the vertical direction and do not come into contact with each other, the link shaft holders 10 can be arranged so as to be overlapped in the horizontal direction, and the adjacent link shafts are arranged by the overlap. The pitch of the holder 10 can be reduced.

The link shaft holder 11 is arranged symmetrically with a pair of horizontal rollers 13 sandwiching the guide rail 6 so as to run in a stable state by sandwiching the same position (position at the same height) of the guide rail 6 from both sides. It is composed.

By reducing the installation space and pitch of each lateral roller of the link shaft holder 10, the link shaft holders 10 and 11 are configured to have the same pitch when arranged side by side on the guide rails. ..

The link shaft 9 of the link shaft holder 11 is arranged so as to be located substantially directly above the center of the inner peripheral side guide rail 6. With this configuration, the dimensions of the links (link plates 15 and 16) can be lengthened. Therefore, the shrinkage length and shrinkage rate in the MD direction (the traveling direction of the film) can be increased. In other words, the distance between the guide rails 5 and 6 can be reduced to achieve the same shrinkage length and shrinkage rate, so that the device can be miniaturized.

Further, in the present embodiment, the distance interval (first distance interval) between the outer peripheral side guide rail 5 and the inner peripheral side guide rail 6 arranged in the inlet side region A is set to the link plate 15 of the equal length link device 2. , 16 are set so as to be located on the inner peripheral side guide rail 6 in a straight line, so that the vertical shrinkage length and shrinkage rate of the sheet-like object 1 can be set large, and the like. It is possible to smoothly transmit the driving force between the long link devices 2 and guide the outer peripheral side guide rail 5 and the inner peripheral side guide rail 6.

In this embodiment, in order to prevent the equal-length link device 2 from floating during traveling, a floating prevention roller 19 is arranged on the mounting portion 17 of the gripping device, and the floating prevention rail 20 is laid on the fixed side. I am trying to be supported by.

In the above configuration, the traveling operation of the equal length link device 2 guided by the guide rails 5 and 6 will be described.

In the inlet side region A, the link plates 15 and 16 of the equal length link device 2 are opened and arranged in a straight line and are located on the inner peripheral side guide rail 6, and protrude in a substantially vertical direction from the guide rail 5. Each gripping device 18 grips the ends of the sheet-like object 1 at intervals of pitch P1. When the equal-length link device 2 is driven from the inlet side sprocket 4, the lateral rollers of each link shaft holder move in contact with the guide rails 5 and 6, respectively, while rotating.

When the horizontal rollers 12 (12a to 12d) and the horizontal rollers 13 of the equal-length link device 2 reach the lateral stretching and longitudinal contraction regions B in which the guide rails 5 and 6 are arranged in a divergent state, the outer peripheral side guide rail 5 The distance between the guide rails 6 on the inner peripheral side and the guide rails 6 on the inner peripheral side gradually widens, and the angles θ of the link plates 15 and 16 of the equal length link device 2 gradually close from the open state (180 °) arranged in a straight line. The distance between the adjacent link shaft holders 10 and the link shaft holder 11 is narrowed, and the distance between the gripping devices 18 is also narrowed from the grip pitch P1 to P2. The region where the distance between the link shaft holders 10 and 11 is narrowed is the lateral stretching and longitudinal contraction region B and the subsequent outlet side region (heat fixing region) C, and in the outlet side region (heat fixing region) C, the outer circumference. The distance between the side guide rail 5 and the inner peripheral side guide rail 6 (second distance interval) is the distance between the outer peripheral side guide rail 5 and the inner peripheral side guide rail 6 arranged in the inlet side region A (first distance interval). It is maintained at a constant distance, which is larger than the distance interval).

As a result, the link shaft holder 10 is guided while the posture is restricted by the guide rail 5, and the gripping device 18 conveys the sheet-like object 1 in a posture protruding vertically from the guide rail 5 and the sheet-like object 1. The sheet-like object 1 forming a right angle to the direction is stretched in the lateral direction (TD direction) along the width direction, and at the same time, contracted and stretched in the vertical direction (MD direction) along the transport direction.

As described above, the lateral stretching machine having the function of contracting the sheet-shaped material in the vertical direction has a simple configuration while following the basic configuration of the stretching machine for stretching the sheet-shaped material that has been conventionally used. By stretching in the horizontal direction and shrinking in the vertical direction, and further, by using the sheet-like material stretched on the original fabric of the sheet-like material, the sheet-like material stretched in the vertical direction can be shrunk. ..
Then, the link plates 15 and 16 of the equal-length link device 2 are arranged in a straight line at the first distance between the outer peripheral side guide rail 5 and the inner peripheral side guide rail 6 arranged in the inlet side region A, and the inner peripheral side. By setting it so that it is located on the guide rail 6, the vertical shrinkage length and shrinkage rate of the sheet-like object 1 can be set large, and the drive between the equal-length link devices 2 can be set. It is possible to smoothly transmit the force and guide the outer peripheral side guide rail 5 and the inner peripheral side guide rail 6.

Further, as shown in FIG. 2A, the outer peripheral side guide rail 5 and the inner peripheral side guide rail 6 are conveyed between the lateral stretching and longitudinal contracting regions B and the outlet side region C to convey the sheet-like object 1. By having a lateral contraction region B'arranged in a slightly constricted shape (to shrink) in the direction, the sheet-like material 1 is stretched laterally and then slightly contracted. It can also be.

The lateral stretching machine having the function of contracting the sheet-like material in the vertical direction of the present invention has been described above based on the embodiment thereof, but the present invention is not limited to the configuration described in the above embodiment. , The configuration can be changed as appropriate within the range that does not deviate from the purpose.

The lateral stretching machine provided with the vertical contraction function of the sheet-shaped material of the present invention has a simple structure and stretches the sheet-shaped material in one direction, contracts in the other direction, and further stretches in one direction. Since it can be shrunk afterwards, it can be suitably used for stretching and shrinking a sheet-like material corresponding to the diversification of materials and functions of the sheet-like material, and has great industrial applicability. Is.

1 Sheet-like object 2 Equal length link device 3 Endless link device 4 Inlet side sprocket 5 Outer peripheral side guide rail 6 Inner peripheral side guide rail 7 Outlet side sprocket 8 Link shaft 9 Link shaft 10 Link shaft holder 11 Link shaft holder 12, 12a ~ 12d 2 pairs of horizontal rollers 12a, 12c Diagonal horizontal rollers 12b, 12d Diagonal horizontal rollers 13 Horizontal rollers 14a, 14b Support rollers 15, 16 Link plate 17 Gripping device mounting part 18 Gripping device 19 Lifting prevention roller 20 Lifting prevention rail A Inlet side area (preheating area)
B Lateral stretching and longitudinal contraction region B'Lorient contraction region C Outlet side region (heat fixation region)

Claims (2)

It is provided with an endless link device in which a plurality of equal-length link devices formed in a folded shape are connected in an endless manner, and is provided with a gripping device for gripping the side end portion of the sheet-like object. The outer peripheral side guide rail and the inner peripheral side guide rail are arranged along a closed path formed on a substantially horizontal plane that returns to the inlet side from the inlet side for introducing the shaped object through the outlet side for sending out the sheet shaped object. By guiding the plurality of equal length link devices along the closed path by the guidance of the outer peripheral side guide rail and the inner peripheral side guide rail, the sheet-like material is conveyed from the inlet side to the outlet side. At the same time, the sheet is configured to be stretched in the horizontal direction along the width direction of the sheet-like material forming a right angle to the transport direction of the sheet-like material, and at the same time to be contracted in the vertical direction along the transport direction and then sent out from the outlet side. In a horizontal stretching machine equipped with a vertical contraction function for an object,
An inlet side region in which the outer peripheral side guide rails and the inner peripheral side guide rails facing each other on both sides of the sheet-like object are arranged in parallel, and the distance between the outer peripheral side guide rail and the inner peripheral side guide rail is arranged at the first distance interval. The laterally stretched and longitudinally contracted regions, which are connected to the inlet side region and have the outer peripheral side guide rail and the inner peripheral side guide rail arranged in a divergent manner toward the transport direction of the sheet-like material, and the laterally stretched and The first distance is such that the outer peripheral side guide rail and the inner peripheral side guide rail that are connected to the vertical contraction region and face each other on both sides of the sheet-like object are parallel to each other, and the distance between the outer peripheral side guide rail and the inner peripheral side guide rail is set. It has an exit side area arranged at a second distance interval wider than the interval, and has.
A gripping device is provided that moves the first distance between the outer peripheral side guide rail and the inner peripheral side guide rail arranged in the inlet side region along the outer peripheral side guide rail constituting the equal length link device. 1 The link plate that connects the link shaft attached to the link shaft holder and the link shaft located on the inner circumference side guide rail attached to the second link shaft holder that moves along the inner circumference side guide rail is in a straight line. A lateral stretching machine having a function of vertically contracting a sheet-like object, which is characterized in that it is arranged so as to be arranged on the inner peripheral side guide rail. A lateral contraction region in which an outer peripheral side guide rail and an inner peripheral side guide rail are arranged in a constricted manner in the transport direction of a sheet-like material between the lateral stretching and longitudinal contraction regions and the outlet side region. The lateral stretching machine having a vertical shrinkage function of the sheet-like material according to claim 1.

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