JPS631665A - Roll type tentering device - Google Patents

Abstract

PURPOSE:To make it possible to install nip rolls simply in a short time, by making the upper one of the nip rolls removable from a lower roll support member together with a support member for the upper roll, and by fitting the lower section of the upper roll support member in a hole in the lower roll support member so that both members are integrally incorporated with each other. CONSTITUTION:The installation of a sheet-like material 3 onto a travel line, is carried out such that a movable free roll 1b is brought to a position below the center section of the sheet-like material 3 in a such a condition that a stationary free roll 1a is previously removed, and a support member 2'' is brought to an intermediate position between the sheet-like material 3 and an end sheet-like material 7. Then, the stationary free roll 1a is brought into such a condition that the support member 2' for the free roll 1a comes to the intermediate position, and the lower section of the support member 2' is fitted into a through-hole in the support member 2''. After the positions of free rolls 1a, 1b are finally determined, both support members are fixed and integrally incorporated with each other by means of bolts 6. Thereafter, the movable free roll 1b is pushed up in association with the operation of a cylinder 4 to nip the end part of the sheet-like material 3.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a roll-type sheet tentering device, and more specifically, to a roll-type sheet tentering device that nips both ends of a central sheet material divided into three parts along the running direction. The present invention relates to a roll-type sheet tentering device useful for applying a tensile force in the width direction of a sheet-like object to prevent wrinkles from occurring in the running direction of the sheet-like object or to smooth out wrinkles that have occurred.

PRIOR ART As a means of smoothing out wrinkles that occur in the running direction (longitudinal direction) of a sheet-like object that is continuously running or as a means for preventing the generation of wrinkles, it is necessary to grip both ends of the sheet-like object (in the width direction (longitudinal direction)) and in the width direction (
A so-called cross guider is known as a sheet width adjusting device that applies a tensile force in the transverse direction.

A cross guider generally has a pair of left and right nip rolls for nipping a sheet material, and the two nip rolls are composed of a pair of upper and lower free rolls and a support for supporting the rolls.

However, a sheet-like object that is continuously running is divided into three parts along the running direction (perpendicular to the width direction), and after the sheet-like object is divided into three parts, a cross is placed horizontally on both ends of the central sheet-like object. In order to prevent the sheet from wrinkling in the lateral direction, a very long roll with a horizontal shaft is guided from the outside of the end sheet to the end of the central sheet, and the roll is Grip both ends of the central sheet, or insert the nip roll of the cross guider from the third division while the sheet is running, and fix it so as to grip both ends of the central sheet. There are possible ways. However, in the case of the former, the device is large-scale and difficult to install in a small space, and furthermore, the longer roll shaft increases roll vibration, which impairs the safety of sheet-like materials. There is. Also,
In the latter case, it is necessary to insert the cross guider from the three-part part of the sheet while the sheet is traveling, but installation becomes difficult due to interference with the traveling sheet and requires a lot of time. In some cases, the cross guider body may come into contact with the traveling sheet-like object, and the cross guider body may be thrown off, damaging the entire device, as well as causing safety problems.

OBJECTS OF THE INVENTION The first object of the present invention is to improve this problem, to divide a continuously running sheet-like object into three parts along the running direction (perpendicular to the width direction), and to divide the sheet into three parts along the running direction (perpendicular to the width direction). A roll-type sheet that can easily, quickly, and safely attach a nip roll to the three-part part of the sheet-like object under running conditions in order to prevent wrinkles in the central part of the sheet-like object. An object of the present invention is to provide a tentering device.

The second object of the present invention is to prevent the upper and lower parts of the sheet and the nip roll from falling off or breaking when the cutter blade of the cutting device that divides the sheet into three parts along the running direction (in the width direction) for some reason falls off or breaks. Collisions with the supports that support the rolls occur, but this prevents damage to the width adjustment device at that time, protects the drive system of the sheet material, and quickly detects abnormal breakage of the sheet material itself. An object of the present invention is to provide a roll-type sheet tentering device equipped with the following device.

Structure and Function of the Invention The present invention is a roll type having a pair of left and right nip rolls arranged in an inverted eight shape, which continuously travel and nip both ends of a central sheet material after being divided into three parts along the running direction. In the sheet tentering device, the upper roll of the nip roll can be separated and removed from the support of the lower roll together with the support, and when in use, the lower part of the support of the upper roll is provided on the support of the lower roll. Preferably, a blade for slitting the sheet-like material is fitted into the hole formed in the upper roll, and further integrates both supports by means of a fixing means. A roll-type sheet width adjustment device characterized in that a stationary cutting equipment is provided, and the operation of the stationary cutting equipment is detected based on the load applied to the blade, thereby detecting an abnormality in the three-part slit. It is a device.

The present invention will be explained below with reference to the drawings.

FIG. 1 is a plan view schematically showing the positional relationship between a traveling sheet-like object and a pair of left and right nip rolls.

FIG. 2 is a schematic side view showing a state in which the nip rolls are gripping a sheet-like object. Sheet width adjustment device (
Nip rolls 1 and 1' of the cross guider (hereinafter referred to as cross guider)
Each of these nip rolls is supported by a support 2.2', and these nip rolls are connected to a pair of upper and lower free rolls 1 (ω, +b>
[Fixed free roll 1 (field) and movable free roll 1 (b
)]. The nip rolls 1.1' are provided with their roll axes in an inverted eight shape, in other words, at a certain angle θ with respect to the lateral direction of the sheet material 3. This angle θ is usually 5 to 30°. Nip roll 1, 1'
A sheet-like material is nipped between a pair of upper and lower free rolls 1 (ω, (b)).This nip applies a force to the continuously running sheet-like material in a direction perpendicular to the roll axis. The lateral component in this direction applies a force that pulls the sheet material in the lateral direction, and has the effect of smoothing out wrinkles.

FIG. 3 is an assembly diagram of a conventional cross guider.

A central sheet-like material 3 is nipped between a fixed roll 1(a) and a movable free roll 1 which is moved up and down by a diaphragm cylinder 4 that applies a nipping force. A support body 2 supports both rolls 1(a) and 1(b). This cross guider has the problems mentioned above.

FIG. 4 is an assembled view of a cross holder showing one embodiment of the present invention, in which a fixed free roll 1 (b) is supported by a support 2' and a movable free roll 1 (b) is supported by a support 2''. The support body 2' can be separated from the support body 2''. In FIG. body 2
．． 2' is integrated. Both supports may be fixed together by means other than bolts.

Fixed free roll 1(a) and movable free roll 1(b)
What is meant by nipping the end of the sheet material 3?This nipping force is adjusted by supplying compressed air to the diaphragm cylinder 4 to push up the movable free roll 1(b) from below, and by this pushing up force. can. Movable free roll 1 (b)
The vertical movement of the cylinder 4 may be performed by other means as long as it has the same effect as the cylinder 4.

Installation of the sheet width adjustment device on the sheet material running line is as follows:
First, with the fixed free roll 1 (field removed), move the movable free roll 1 <b> under the edge of the central sheet-like material 3, and then move the support 2'' between the sheet-like material 3 and the end sheet. Intermediate position with object 7 (1 after dividing the film into three parts)
Then, bring the fixed free roll 1 (ω) so that its support 2' is in the above-mentioned intermediate position, and then lower the lower part of the support 2' to the support 2''. Fit it into the through hole. Free roll 1 ω.

After the position shown in (b) is finally determined, both supports are fixed and fixed with bolts 6. Thereafter, the movable free roll 1(b) is pushed up by the operation of the cylinder 4 to nip the end of the sheet-like material 3. The nipping force is determined by, for example, F≧(200/μ) When dividing into items, for example, the slitter is defective, the slitter blade falls off,
It is often seen that the division into three parts is incomplete due to damage or other reasons. Then, for example, if the sheet-like material is no longer cut, the sheet-like material collides with the support of the nip roll. It is desirable to use a sheet width adjustment device (cross guider) to detect this abnormal phenomenon and take some safety measures such as stopping the drive system for running the sheet-like object. In the present invention, as such a safety measure, an abnormal phenomenon detection terminal is preferably provided. FIG. 5 is a sectional view showing an example of this detection terminal. This abnormal phenomenon detection terminal is provided on the front surface or head of the support 2' of the fixed free roll 1 (at).
It consists of a switch 12 and a frame 14 provided on the back side of the camera. If the sheet-like material is not sufficiently divided along the running direction due to a slitter abnormality, the sheet-like material hits the slitter blade 11 and is cut into slits by this slitter 11. The object presses the switch 12 toward the switch 12, causing the switch 12 to be activated. This detects the operation of the slitter blade, that is, the operation of the stationary cutting equipment. When the sheet is removed, the springs 13, 13' restore the slitter blade 11 to its original position. The switch 12 may be of any type as long as it has the function of detecting fluctuations in the slitter blade 11, and examples thereof include a vibration switch (vibration sensor), a limit switch, and the like. Further, as other abnormal phenomenon detection means, a contact type limit switch, a reflection type or a transmission type phototube switch, etc. can be used. In some cases, the abnormal phenomenon detection means does not need to be fixed to the support 2', and in this case, it is sufficient to provide the abnormal phenomenon detection means between the position where the sheet material is divided into three parts and the cross guider. Even if a stop signal is received in the drive system for sheet-like objects, there is inertia, and it is unavoidable that the sheet-like object continues to be in contact with the stationary cutting equipment after traveling for a while. However, since the sheet material is slit by the slitter blade 11 during this time, it is possible to prevent abnormal force from being applied to the stationary cutting equipment or the cross guider.

In the above, the present invention has been described as being applied to the central sheet-like material when the sheet-like material is divided into three parts, but the apparatus of the present invention can also be applied to the case where the central sheet-like material is further divided. Therefore, it should be understood that the central sheet-like material in Specification 4 includes an embodiment in which the central sheet-like material is further divided.

In the present invention, the sheet-like material may be cloth, a sheet or film made of a polymer, and the roughness may be paper or the like. As the polymer, thermoplastic polymers, particularly polyesters, are preferred.

Effects of the Invention The roll-type sheet tentering device of the present invention has the advantage that it can be easily installed in a short time and safely, and that wrinkles in the longitudinal direction of the sheet material can be removed. It has the advantage that the device is compact. This sheet tentering device can be installed with support from one direction when attached to existing sheet-like material transport equipment, such as film manufacturing equipment, so it can be installed in any desired location, and there is no need to move the installation location. It has the advantage of being easy. Furthermore, by detecting an abnormality in which a sheet is divided into three parts and stopping the sheet drive system, damage to the sheet width adjustment device and drive system, as well as abnormalities in quality, can be detected at an early stage.
This method has the advantage that sheet-like products can be produced with higher reliability.

[Brief explanation of drawings]

FIG. 1 is a plan view schematically showing the operation of the sheet width adjustment device, and FIG. 2 is a side view thereof. FIG. 3 is an assembly diagram of a conventional sheet width adjustment device. FIG. 4 shows an assembly diagram showing one example of the roll-type sheet width adjusting device of the present invention. FIG. 5 is a side view showing an example of an abnormality detection device. 1.1': Nip roll, 1 (ω: Fixed free roll, 1 mountain): Movable free roll, 2.2
', 2'': Free roll support, 3: Center sheet. 4, Diaphragm cylinder linker, 5: Frame. 6: Bolt, 7: End sheet, 11 Nislitter blade, 12: Switch, 13.13': Spring. 14: Frame Figure 1

Claims (1)

[Claims] 1. A roll-type sheet that is continuously running and has a pair of left and right nip rolls in an inverted eight shape that nip both ends of a central sheet material after being divided into three parts along the running direction. In the tentering device, the upper roll of the nip roll can be separated and removed from the support of the lower roll together with the support, and when in use, the lower part of the support of the upper roll is provided on the support of the lower roll. 1. A roll-type sheet width adjustment device, characterized in that it fits into a hole and further integrates both supports with a fixing means. 2. A stationary cutting equipment having a blade for slitting the sheet material is provided on the front surface or the head of the upper roll support, and the operation of the static cutting equipment is detected by the load applied to the blade. 2. The roll-type sheet width adjusting device according to claim 1, wherein an abnormality in the slit of the three-part slitter is detected.