JPH0952283A - Paper passing device for horizontal stretching machine - Google Patents

Abstract

(57) [Summary] (Correction) [Problem] In a conventional apparatus, a film may be introduced into a transverse stretching machine in a wavy, oblique, or bent state. An object of the present invention is to provide a paper passing device for a transverse stretching machine that can set a film in a correct arrangement. SOLUTION: An upper belt conveyor 30 and a lower belt conveyor 20 are arranged so as to vertically face each other with a film 1 continuously supplied therebetween, each of which can move up and down individually and run at the same speed. Was set up. Further, the film inlet side of the upper belt conveyor 30 is provided with an inclined portion 32a, the belt 22 of the lower belt conveyor 20 is formed of a breathable material, and at the film inlet portion of the lower belt conveyor 20, A suction box 29 for sucking air on the lower surface side of the film 1 flowing on the belt 22 is provided.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a film transverse stretching machine for grasping both side edges of a film with clips and continuously stretching the film in the width direction in an oven. The present invention relates to a paper-passing device for a transverse stretching machine for correctly supplying both side ends of a film continuously supplied from a previous step to a gripping position of a clip.

[0002]

2. Description of the Related Art Conventionally known sheet passing devices for a horizontal stretching machine are shown in FIGS. In FIG. 3, which is a plan view showing a conventional transverse stretching machine, 1 is a film, 2 is an oven, 3 is a clip, and 4 is a pair of paper passing devices arranged in the left-right direction of the film 1 to be supplied. Film 1
Are continuously fed from the previous process installed on the left side of the figure, and upstream of the inlet of the oven 2, both ends are gripped by the clips 3, and the clip 3 running in parallel with the film 1 travels. Then, after being transferred in the oven 2 and stretched in the width direction in the process, it is released from the clip 3 on the downstream side of the outlet of the oven 2 and sent to the next step.

Further, FIGS. 4 and 5 are a side view and a front view showing the details of the above-described sheet passing device 4. In these figures, 5 is a tenter, 6 is a roll, 7 is a thread plate, 8 is a belt conveyor, 9 is a belt, 10 is a pulley,
Reference numeral 11 is a tight toner, and 12 and 13 are lifting devices. The tenter 5 and the belt conveyer 8 sandwich the film 1 to be transferred and are installed to face each other vertically, and the film 1 is passed through the roll 6 and the belt 9 by the pressing force of the lifting devices 12 and 13. Pressed. In addition, the thread plate 7 disposed between the rolls 6 of the tenter 5 is provided with the adjacent rolls 6.
It is arranged at almost the same height as the apex of, and makes the traveling of the film 1 smooth. Further, the tight toner 11 generates an appropriate tension on the belt 9 to prevent the belt 9 from slipping when the belt 9 is driven by the pulley 10.

In such a transverse stretching machine, when the stretching of the film 1 is started, the film 1 is passed through, that is,
The setting to the transverse stretching machine is performed as follows. First, the elevating devices 12 and 13 are operated to lower the belt conveyor 8 and raise the tenter 5 to bring the belt 9 and the roller 6 into a pressure contact state. Next, when the belt 9 of the belt conveyor 8 is driven by the pulley 10, the roll 6 of the tenter 5 which is pressed against the lower surface of the belt 9 is driven by it. Next, when the film 1 is supplied between the belt 9 and the roll 6, the film 1 is transported in the direction of the arrow shown in FIG. 4, and both widthwise end portions thereof are supplied to the gripping position of the clip 3. Then, as shown in FIG. 5, the clip 3 is gripped, and the passage of the film 1 is completed.

Further, as shown in FIGS. 4 and 5, when the film 1 is gripped by the clip 3 and the sheet passing is completed,
The elevating devices 12 and 13 are actuated again, the tenter 5 is lowered, and the belt conveyor 8 is raised to move the film 1 upward and downward away from the passage of the film 1, and the film 1 is transferred by the gripping force of the clip 3 to laterally stretch the work. I do. When this film 1 is passed through the film, if the film 1 is wavy in the width direction or runs obliquely, the film 1
The positions of both end portions in the width direction of (1) deviate from the regular positions, so that they cannot enter the clip 3 and the film 1 cannot be grasped accurately.

FIG. 6 is a plan view showing a tenter 10 in which the roller 6 is arranged so as to be inclined with respect to the width direction in order to prevent this problem. In the figure, 14 is a rotary drive shaft for running the clip 3, X is a reference axis indicating a width direction orthogonal to the transport direction of the film 1, R is an axis center line of the roll 6, and θ is a reference axis X and an axis. This is the angle formed by the core line R. In this way, the roll 6 is arranged with the axis R inclined with respect to the reference axis X by an angle θ in the horizontal plane so that the outer end is closer to the upstream in the traveling direction than the inner end.

Therefore, the roll 6 of the tenter 10 and the belt 9 of the belt conveyor are supplied from the upstream side of the transverse stretching machine.
The both side end portions of the traveling film 1 sandwiched between the two are in a direction along the circumference of the inclined roll 6, that is,
With respect to the traveling direction of the film 1, the film 1 is attempted to move outward by an angle θ, and the film 1 is pulled in the width direction to perform width-out. Therefore, for one of the above-mentioned reasons, when one of the both side ends of the film 1 is inside the normal position, the film 3 is moved and corrected to the correct relational position, and the both side ends of the film 1 are moved to the clip 3 So that it is properly gripped.

However, the film 1 stretched in the width direction by such a transverse stretching machine has a small thickness,
With respect to deformation that bends in a direction perpendicular to the plane, the rigidity is low, and the tip portion and both end portions are likely to warp or wavy to reduce the dimension in the width direction.

For this reason, the tenter 5 and the belt conveyor 8
When the film 1 is introduced between the two, it may be bent and sandwiched, or it may be introduced in a state where the width is shortened,
It is often the case that the both ends of the film 1 cannot be accurately transferred to the gripping position of the clip 3 and do not enter the clip 3 correctly, so that the film 1 is not gripped correctly. In this way, when the dimension of the film 1 in the width direction becomes shorter and the film 1 is introduced between the tenter 5 and the belt conveyor 8, in the above-described conventional transverse stretching machine, the tenter 5 allows the film 1 to move. An attempt is made to move and correct both end portions of the roll 6 to the proper positions in the clip 3, but since the roll 6 of the tenter machine 5 is driven by the belt 9,
Even if the axis center of is tilted, the correction effect becomes insufficient,
Further, since the entrance to the space between the tenter 10 and the belt conveyor 8 is narrow, the film 1 may be introduced in an abnormal state, leading to a failure in sheet passing.

If the passage of the film 1 fails, the tenter 5 and the belt conveyor 8 are left as they are,
Since the position and orientation of the film 1 in the width direction cannot be changed, the belt conveyor 8 is raised by the elevating device 13, the leading end of the film 1 is pulled back to the entrance side, and then the belt conveyor 8 is lowered again. Since the film 1 had to be conveyed again, the post-treatment work was difficult, and in terms of work efficiency, it was necessary to minimize the failure rate of sheet passing.

[0011]

DISCLOSURE OF THE INVENTION The present invention solves the above-mentioned problems with the conventional paper-passing device for a horizontal stretching machine. The failure rate of paper passing by gripping can be reduced, post-processing work such as film re-doing work performed by raising and lowering the belt conveyor by raising and lowering operation of the lifting device can be reduced, and work efficiency can be reduced. It is an object of the present invention to provide a paper passing device for a horizontal stretching machine that can improve the above-mentioned.

[0012]

Therefore, the sheet passing device for a transverse stretching machine of the present invention as defined in claim 1 has the following means. (1) Since both widthwise end portions of the film continuously supplied from the previous step are supplied to the gripping positions of the clips running along both sides of the film, the vertical movements are freely made and are substantially the same. The upper belt conveyor and the lower belt conveyor, which run at a speed, were arranged so as to face each other vertically so that the film can be introduced while sandwiching the film from above and below.

In addition to the above-mentioned means (1), the paper-passing device for a horizontal stretching machine according to the present invention has the following means. (2) The tip portion of the upper belt conveyor into which the film is introduced is provided with an inclined portion that opens outward and is inclined toward the upstream side of the supplied film.

Further, the paper-passing device for a horizontal stretching machine of the present invention as defined in claim 3 is the means of the above (1) or the above (1), (2).
In addition to the above means, the following means were adopted. (3) The belt of the lower belt conveyor is made of a breathable material, and air on the film surface on the side in contact with the belt of the lower belt conveyor near the tip of the lower belt conveyor into which the film is introduced. An inhalation box was installed to inhale.

According to the paper-passing device for a horizontal stretching machine according to claim 1 of the present invention, (1) the lower belt conveyor is raised by the elevating device and the upper belt conveyor is lowered by the above-mentioned means (1). , The two are brought into contact with each other at the film passage position, and the film supplied from the previous process is introduced between the upper and lower belt conveyors, but the conventional paper feed using the roll driven by the upper belt conveyor. Compared to the device, the upper and lower belt conveyors run at the same speed, so the film receives the same force from the upper and lower sides, and the film is not deformed. It is introduced during the period, and the film is not wavy in the width direction or runs diagonally.

Further, when the film is introduced with the dimension in the width direction shortened, an action of moving and correcting both side end portions of the film to the normal position of the clip occurs, and both side end portions of the film are moved inside the clip. The paper can be correctly inserted into and is grasped, the number of paper passing failures can be reduced, and post-processing such as paper passing can be reduced. After gripping both end portions of the film with the clip, the upper and lower belt conveyors are respectively moved up and down to be separated from the film, and the film is transferred by the gripping force of the running clip, and continuously stretched in the horizontal direction. You can do the work.

Further, according to the paper-passing device for a transverse stretching machine of the present invention, in addition to the above (1), the above-mentioned (2) is provided.
(2) The upper belt conveyor is a conveyor in which the belt is wound around at least three rolls, and the leading end on the film inlet side is an outward (upstream) slope. Section is provided. Thereby, the introduction port of the film formed by the upper and lower belt conveyor is widened by the inclined portion provided on the upper belt conveyor, and when the film is introduced, even if the tip of the film is warped,
The leading edge of the film easily enters the wider inlet, and the warped portion is pushed down toward the inclined portion of the upper belt conveyor, preventing the film from being introduced in an abnormal state when it is bent, Both ends are properly inserted and gripped in the clip.

According to the paper-passing device for a horizontal stretching machine of the present invention, in addition to the above-mentioned item (1), or in addition to the above-mentioned items (1) and (2), the above-mentioned item (3) is provided. (3) The lower belt conveyor is a conveyor in which a breathable belt is wound around a plurality of rolls, and the upper side is opened between the belts in the vicinity of the introduction port to the lower belt conveyor of the film. A suction box is provided, connected to a vacuum blower so as to suck the air on the side that contacts the film through a breathable belt, that is, the lower surface side of the film. The belt conveyor and vacuum blower can be started to supply the film from the upstream side. As a result, the negative pressure of the suction box attracts the film to the upper surface of the lower belt conveyor, which is permeable to air, and the ironing effect of this adsorption corrects the dimension in the widthwise direction, and both sides of the film are corrected. The ends are correctly fed into the grip position of the clip.

[0019]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of a sheet passing device for a horizontal stretching machine of the present invention will be described below with reference to the drawings. A horizontal stretching machine to which the form of the paper passing device for the horizontal stretching machine of the present invention is applied,
It is almost the same as the conventional one shown in FIG. FIG.
2 is a side view showing an embodiment of a paper passing device for a horizontal stretching machine of the present invention, and FIG. 2 is a front view of the embodiment shown in FIG. In these figures, the same or similar parts as the conventional ones are designated by the same reference numerals and the description thereof will be omitted.

In these figures, 20 is a lower belt conveyor, 21 is a lower conveyor holding block, 22 is a belt, 23 is a drive roll, and 24, 25 and 26 are driven rolls. Further, 27 is a motor fixed to the lower conveyor holding block 21, and as shown in FIG. 2, a motor for rotating the drive roll 23 via a drive belt 28, and 29 is a suction box.

The lower belt 22 has a large number of vent holes or is made of an air permeable material, and is wound around a driving roll 23, driven rolls 24, 25 and 26,
Tension is appropriately applied by the driven roll 26 that also serves as a tight toner. The suction box 29 is provided between the drive roll 23, the driven rolls 24, 25, and 26 and the belt 22 wound around the drive roll 23 and the driven roll 2.
4 is formed in the vicinity of the introduction portion of the film 1 and is composed of a container whose upper side is supported by a lower belt holding block 21 and which is connected to a vacuum blower (not shown).
The air on the lower surface side of the film 1 passing above is sucked.

Reference numeral 30 is an upper belt conveyor, 31 is an upper conveyor holding block, 32 is a belt, 33 is a driving roll, 34 and 35 are driven rolls, 36 is a tensioner, 3
A motor 7 is fixed to the conveyor holding block 31 and rotates the drive roll 33 via the drive belt 38 as shown in FIG. The upper belt 32 is wound around a driving roll 33, driven rolls 34 and 35, and tension is appropriately applied by the tighter 36. The upstream side where the film 1 is introduced is driven by the driving roll 33 and the driven roll 34. An inclined portion 32a that opens to the upstream side is formed. The upper and lower belt conveyors 20 and 30 are
The whole can be moved up and down by the lifting devices 12 and 13, and the lower and upper belts 22 and 32 run at the same speed.

Since the sheet passing device for the horizontal stretching machine of the present embodiment has the above-mentioned structure, when the film 1 is passed through the sheet, that is, when the film is set in the horizontal stretching machine, the lower belts are moved by the elevating devices 12 and 13. The conveyor 20 is raised, the upper belt conveyor 30 is lowered, and both are pressed and brought into contact with each other at a predetermined position of the film passage position, at the same time, the lower and upper belts 22 and 32 are started to run, and a vacuum not shown is also shown. The blower is started to start sucking air in the suction box 29.

Next, the leading end of the film 1 supplied from the upstream side, which is the left side of FIG. 1, is guided to the inlet formed by the lower and upper belt conveyors 20 and 30. The lower and upper belt conveyors 20 and 30 grip a part of the inner side of the film 1 from the both side ends thereof to run, guide the both side ends of the film 1 to a gripping position in the clip 3, and the clip 3 moves to the film. Lifting device 12 and 1 after gripping 1
At 3, the lower and upper belt conveyors 20 and 30 are retracted to the upper and lower standby positions to complete the sheet passing operation.

As described above, according to the sheet-passing device for the horizontal stretching machine of this embodiment, the lower and upper belt conveyors 2 are used for sheet-passing.
Before the film 1 is gripped by 0 and 30, the front end and both side ends are free ends that are not restrained, and therefore, as in the conventional case, the film 1 warps or corrugates to shorten the widthwise dimension. Even if the tip portion is warped, it enters the wide inlet and the inclined portion 32a of the upper belt conveyor 30.
Is pressed down by the suction box 29, adsorbed on the upper surface of the belt 22 by the negative pressure of the suction box 29, and smoothly introduced between the lower and upper belts 20 and 32 traveling at the same speed.

Since the flat film 1 has a considerably large rigidity in the plane, when the film 1 is adsorbed to the belt 22, the film 1 is squeezed and stretched without being damaged. Both side ends of the film 1 are introduced in proper relational positions with respect to the clip 3 and are accurately gripped by the clip 3.

[0027]

EFFECTS OF THE INVENTION According to the paper passing device for a horizontal stretching machine of the present invention,
The following effects can be obtained by the configurations described in the claims.

(1) The belts of the upper and lower belt conveyors are individually driven and run at the same speed, so that no force is generated to deform the film from above and below, and the film is smoothed. Can be introduced between the two belts.

(2) Since the inclined portion that opens to the outside is provided on the upstream side of the upper belt conveyor, even if the leading edge of the film is warped upward, it is pushed down to correct the posture of the film. , It is possible to prevent the failure of paper passing due to the warp.

(3) A suction box is provided in the film introduction section of the lower belt conveyor, and the film is sucked onto the belt and stretched in a plane, so that the width of the film is widened and the clip lip and The correct relational position is secured, and the failure of gripping the film by the clip is eliminated.

[Brief description of drawings]

FIG. 1 is a side view showing an embodiment of a paper passing device for a horizontal stretching machine of the present invention,

FIG. 2 is a front view of a sheet passing device for a horizontal stretching machine having the form shown in FIG.

FIG. 3 is a plan view of a conventional transverse stretching machine to which the sheet passing device for the transverse stretching machine of the form shown in FIG. 1 is applied,

FIG. 4 is a side view of the conventional paper passing device for a horizontal stretching machine shown in FIG.

5 is a front view of the sheet passing device for the horizontal stretching machine shown in FIG. 4,

6 is a plan view showing an example of a tenter of the paper passing device for the horizontal stretching machine shown in FIG.

[Explanation of symbols]

 1 Film 2 Oven 3 Clip 4 Paper Feeding Device 5 Roll Extender 6 Roll 7 Thread Plate 8 Belt Conveyor 9 Belt 10 Pulley 11 Titoner 12 (For Width Extender) Lifting Device 13 (For Belt Conveyor) Lifting Device 14 (For Clip Traveling) ) Rotational drive shaft 20 Lower belt conveyor 21 Lower conveyor holding block 22 Belt 23 Drive roll 24, 25, 26 Driven roll 27 Motor 28 (Drive) belt 29 Suction box 30 Upper belt conveyor 31 Upper belt conveyor holding block 32 Belt 32a Inclined part 33 Drive roll 34,35 Driven roll 36 Titoner 37 Motor 38 Drive belt

Claims (3)

[Claims] 1. A paper feed device for a transverse stretching machine, wherein both lateral ends of a continuously fed film are sequentially gripped by clips and the film is fed to a lateral stretching machine for stretching the film in the width direction. The horizontal stretching machine is provided with an upper belt conveyor and a lower belt conveyor, which are vertically opposed to each other and which are vertically movable. Paper passing device. 2. The paper feeding device for a horizontal stretching machine according to claim 1, wherein a leading end portion of the upper belt conveyor into which the film is introduced is an inclined portion that opens outward. 3. The lower belt conveyer comprises a breathable belt, and a suction box for sucking air on the side of the introduced film which comes into contact with the belt is provided on the lower side for introducing the film. The sheet passing device for a horizontal stretching machine according to claim 1 or 2, wherein the sheet passing device is provided near a front end portion of the belt conveyor.