JP3794555B2 - Feeding mechanism for sheet-like long objects in a cutting apparatus for elastic sheet-like long objects - Google Patents

Description

[0001]
[Industrial application fields]
TECHNICAL FIELD The present invention relates to a sheet-like long object feeding mechanism in a sheet-like long object cutting device having elasticity such as rubber, and more specifically, a sheet-like long object having elasticity with high frictional resistance. The present invention relates to a feed mechanism for accurately and intermittently moving the lens toward the cutting means.
[0002]
[Prior art and problems]
An elastic sheet member such as a cleaning blade or a squeegee for a printing machine incorporated in office equipment such as an electrophotographic copying machine is usually cut in the width direction from a long sheet formed into a sheet shape. Manufactured.
[0003]
However, since these sheet-like long objects have elasticity, they have high frictional resistance, and the thickness of the sheet-like long objects is not necessarily uniform over the entire surface. There is a problem that deviation (oblique) occurs when a sheet-like long article is conveyed due to the fact that the hardness is not uniform over the whole and the pressing pressure by the feeding roller and the pressing roller is not constant.
[0004]
As described above, when the deviation occurs, the feed amount to the cutting portion of the sheet-like long object cannot be kept constant, and the cutting width of the sheet-like long object that requires accuracy like a cleaning blade is kept constant. There is a problem that you can not.
[0005]
In order to solve such problems of the prior art, the present applicant has been searching for a solution for many years based on the technical problem of how to accurately cut a sheet-like long object having elasticity, The techniques disclosed in Japanese Patent Laid-Open Nos. 8-257984 and 8-257987 have been proposed.
[0006]
A feature of the above prior art is that the vicinity of one end of the sheet-like long object having elasticity is held by a holding part having a claw-like tip, and air is supplied to the lower surface of the sheet-like long object together with the holding part. The sheet-like long object is moved toward the cutting means composed of a traveling cutter, and the other end of the sheet-like long object is brought into contact with a support base having an upwardly curved surface and fixed in a curved state. The curved portion is cut along the width direction of the long object by the cutting means.
[0007]
That is, by supplying air to the lower surface of the sheet-like long object having elasticity that moves toward the cutting means, the apparatus and the sheet-like long object are prevented from coming into contact with each other. It is intended to accurately move.
[0008]
This method is highly evaluated technically in comparison with the prior art, which has not been able to move smoothly due to the large frictional resistance of elastic sheet-like long objects. The means for preventing contact between the apparatus and the sheet-like long object by supplying is not a problem when the size and weight of the sheet-like long object are always constant, but the sheet-like long object is supplied by the supplied air. In order to make it applicable to sheet-like long objects with various sizes and weights, the air supply amount must be small. There is a technically difficult problem to make the relationship with air constant as a result of constant or bending of the sheet-like long object.
[0009]
OBJECT OF THE INVENTION
Therefore, an object of the present invention is to eliminate vibration (flapping) of the entire sheet-like long object due to air regardless of the size and weight of the elastic sheet-like long object, and always stably. the sheet-like elongated material having elasticity is movable, whereby the sheet-like elongated material having elasticity which makes it possible to a constant cut width of the sheet-like elongated material having elasticity capable of uniformly cutting width It is to provide a feeding mechanism.
[0010]
[Means for Solving the Problems]
The present invention has been proposed in order to achieve the above object, and has the following features.
That is, according to the present invention, in the sheet-like long material cutting device having elasticity, the sheet-like long material is a mechanism for intermittently sending the sheet-like long material to the cutting means,
The sheet-like long object is held on the pedestal of the holding part by a holder at one end in the longitudinal direction, and moves intermittently toward the cutting means together with the holding part,
The lower surface of the sheet-like long object moves in synchronization with the intermittent feeding mechanism of the holding unit, and one end thereof is fixed to the lower surface of the holding unit, via a roller installed immediately before the cutting means A sheet-like long object feeding mechanism is provided, wherein the sheet-like long object is wound in a downward direction, and the other end moves in contact with an elastic sheet-like belt configured to be wound around a take-up roll.
[0012]
Further, according to the present invention, the winding roll is synchronized with the operation of the holding unit via a step motor, and the operation at the time of winding up to the end of the cutting process of the sheet-like long object is performed. After the long object cutting process is completed , a sheet-like long object feeding mechanism having elasticity and configured to be rotatable is provided.
[0013]
Further, according to the present invention, the long sheet-like material after cutting is sequentially fed to a rotatable endless belt disposed adjacent to the cutting means, and is held by the holding unit after the cutting process is completed. There is provided a sheet-like long object feeding mechanism having the elasticity, which is pulled back to a position at the start of work in a state and released from the holding portion.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
The present invention will be described below with reference to the drawings.
FIG. 1 is a partial cross-sectional view of a cutting device for explaining an outline of a feeding mechanism for a sheet-like long object (hereinafter, simply referred to as “sheet-like long object”) having elasticity according to the present invention. FIG. 2 is a partial perspective view for explaining the feeding mechanism.
The sheet-like long object 13 having elasticity is held in a state in which the end in the longitudinal direction is sandwiched between the holder 12 and the base 18 formed in the holding part 11. The holding unit 11 is connected to a step motor (not shown), and this step motor is configured to rotate by a certain angle each time an input pulse is applied. If the interval is set, the holding unit 11 can control intermittent transfer at a constant interval toward the cutting means.
[0015]
In the present invention, as the holding part moves, the lower surface of the sheet-like long object 13 moves in contact with the sheet-like belt 15 that moves in synchronization with the stepping motor (intermittent feed mechanism) of the holding part. It is an important feature.
[0016]
FIG. 2 shows a state before the sheet-like long object is set in the holding unit 11. As can be seen from FIG. 2, one end of the sheet-like belt 15 is fixed to the lower surface of the holding portion 11, and is wound downward via a roller 16 installed immediately before the cutting means 17. Is configured to be wound on a winding roll 14. The holding part 11 and the end of the sheet belt are placed on the guide table 19. The guide table is preferably formed with a plurality of step grooves 19a in the traveling direction in order to improve the traveling performance.
[0017]
That is, the sheet-like belt 15 is one in which the sheet-like long object 15 is intermittently moved toward the cutting means along with the movement of the holding unit 11 and is also intermittently moved in the direction of the arrow A. Immediately before the cutting means, it is wound downward via a roller 16 and is finally wound on the take-up roll 14 in the direction of arrow a.
[0018]
The sheet belt is not particularly limited as long as it is a sheet material with little bending, and a cloth belt, a sheet material made of synthetic resin such as polypropylene, a resin or rubber such as urethane or fluorine on a glass sheet. Examples thereof include sheet-like belts impregnated or coated and then fired. Among these, a sheet-like belt made of a glass sheet impregnated with fluororubber and fired is preferably used because of its excellent durability and excellent slipperiness. The thickness of the sheet-like belt is not particularly limited, and according to the experiment of the present inventors, it may be about 0.1 to 1.0 mm, and preferably about 0.5 ± 0.4 mm.
[0019]
The engagement between the take-up roll 14 and the stepping motor of the holding unit 11 is performed until the end of the cutting process of the sheet-like long object, during which the sheet-like long object moves intermittently in the direction of arrow A, but the cutting is performed. When the process is completed, the take-up roll 14, the holding unit 11, and the step motor are disengaged, the take-up roll 14 becomes rotatable, and the holding unit 11 becomes movable.
[0020]
As shown in FIG. 3, the sheet-like long article after cutting is sent onto an endless belt 22 that is rotatably supported by rolls 21, 21 arranged behind the cutting means. In this apparatus, it is preferable that the terminal direction is slightly lowered so that the long sheet-like object after cutting can move under its own weight. In addition, the sheet-like long object 13 having elasticity, which is the object to be cut of the present invention, is in a state where the cut surfaces are in close contact with each other even after being cut by the traveling cutter 20, and as a whole, the sheet-like long object is used as it is. Forming. That is, the sheet-like long object after cutting can be separated into strips by an external force, but in the lifted state, it is as if a single long object is formed.
[0021]
Therefore, as described above, the long sheet-like object after the cutting process can be pulled back to the position at the start of the work while being held by the holding unit 11.
At this time, since both the holding unit 11 and the take-up roll 14 are disengaged from the step motor, the holding unit 11 can move forward and backward, the holding unit 11 moves in the direction of arrow B, and the take-up roll 14 is also moved to the arrow. It will rotate in the b direction.
[0022]
The cutting means is not particularly limited, but a technique suitable as a method for cutting a sheet-like long object having elasticity is described in detail in the prior art related to the application of the present applicant.
That is, when the sheet-like long object 13 held by the holding part 11 and fed into the cutting means 17 stops at a predetermined position on the cutting means 17, the cutting means 17 is raised by a push-up mechanism (not shown). And it is made to contact | abut to the lower surface of the sheet-like elongate object 13 to the state shown in FIG. At this time, the sheet-like long object 13 in surface contact with the cutting means 17 is more preferably pressed against the ends of the tension members 31A and 31B from both sides of the cutting portion, as shown in FIG. Is fixed to the upper surface of the cutting means 17.
[0023]
As shown in FIG. 6, the tension members 31 </ b> A and 31 </ b> B are preferably configured to cover the entire width of the sheet-like long object, and the tip, that is, the contact portion with the sheet-like long object Is formed into a bird cage 34, thereby preventing deformation of the elastic sheet and preventing displacement.
As shown in FIG. 6, a shaft 35 fixed to an attachment member (not shown) is inserted into each of the tension members, and the tension members 31 </ b> A and 31 </ b> B can rotate around the shaft 35. Yes. Further, drive pins 33A and 33B are projected from the respective tension members 31A and 31B, and each drive pin corresponds to a long hole 41A and 41B formed in the bifurcated plate 40.
[0024]
Further, as shown in FIG. 6, two grooves 32 are formed in the lower portion of the tension member 31 </ b> A, and the grooves 32 are formed when the sheet-like long object 13 is conveyed. When the holding part 11 approaches the tension member 31 </ b> A, the holder 12 is formed in a shape that enters the tension member 31 </ b> A. Thereby, the sheet-like elongate object 13 can be cut | disconnected to the edge part on the opposite side to the conveyance direction, and a yield improves.
[0025]
In addition, a traveling cutter 20 that is suspended from above and cuts a sheet-like long object in the width direction is disposed facing the central groove of the cutting means 17. The traveling cutter 20 is supported so as to be movable in the vertical direction of FIG. 4 and in a direction perpendicular to the longitudinal direction of the sheet-like long object (width direction of the sheet-like long object 13). The tip of the traveling cutter 20 is inserted between the pair of tension members 31A and 31B.
The sheet-like long object having elasticity that is the object to be cut in the present invention is not formed with a sharp cut surface only by pressing the cutter from above. Can not be cut.
[0026]
In the present invention, the sheet-like long object 13 is moved while being pressed by the holder 11 and is moved intermittently in synchronization with the operating state of the holder while being in contact with the lower surface of the sheet. Coupled with the action of the belt 15, there is no deviation at the time of movement regardless of the type and size of the sheet-like long object, and the holding means allows the sheet-like long object to be moved by a predetermined amount. It can be reliably supplied to the cutting means.
Therefore, even if the thickness of the sheet-like long object is not uniform throughout, even if the hardness of the sheet-like long object is not uniform throughout, the sheet-like long object is reliably cut by a predetermined length. Can be supplied to.
[0027]
【Example】
Embodiments of the present invention will be described below with reference to the drawings.
FIG. 1 and FIG. 2 show a mechanism for feeding the sheet-like long object to the cutting means in order to cut the elastic sheet-like long object along the width direction.
As shown in FIG. 2, the holding portion 11 has a holding tool 12 that is rotatable about a fulcrum shaft by a clamp lever (not shown), and below the holding tool 12 is a sheet-like shape. A pedestal 18 for fixing the long object 13 is extended. One end of the sheet-like long object 13 is held between the holder 12 and the pedestal 18.
[0028]
An end portion in the longitudinal direction of the sheet belt 15 is fixed to the lower surface of the holding portion 11, and the sheet belt intermittently moves as the holding portion moves. A winding roll 14 that rotates intermittently synchronously is wound in the direction of arrow a. The intermittent operation of the holding unit and the take-up roll is performed by connection with a step motor.
[0029]
The holding portion 11 and the sheet-like belt 15 are performed on a guide table 19, and a plurality of step grooves 19a are formed on the upper surface of the guide table along the moving direction. The step groove on the guide table is effective for smoothly moving the holding portion 11 and the sheet-like belt.
In this embodiment, the sheet-like belt 15 is a sheet-like belt having a thickness of 0.15 mm, in which a glass sheet is impregnated with fluororubber and fired. Since this sheet-like belt is excellent in durability and slippery, it can contribute to the cutting of a sheet-like long object with high accuracy over a long period of time without causing bending.
[0030]
【The invention's effect】
According to the present invention, a sheet-like long sheet having elasticity is obtained by using both a holding part and a sheet-like belt that are synchronized via an intermittent feeding mechanism as a sheet-like long-sheet feeding mechanism having elasticity. Feeding a sheet-like long object that can supply the object accurately and smoothly to the cutting means, and can always form a constant cut width regardless of the material, thickness or weight of the sheet-like long object. A mechanism can be provided.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view of an essential part for explaining a sheet-like long object feeding mechanism according to the present invention.
2 is a perspective view of an essential part for explaining a sheet-like long object feeding mechanism of FIG. 1; FIG.
FIG. 3 is a cross-sectional view showing the configuration of the apparatus at the end of the cutting process of a sheet-like long object.
FIG. 4 is a reference diagram of cutting means.
FIG. 5 is a reference diagram showing a fixed state of the sheet-like long object of the cutting means.
FIG. 6 is a reference diagram of a tension member for fixing a sheet-like long object at the time of cutting.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 11 Holding part 12 Holding tool 13 Sheet-like long thing 14 Sheet-like belt winding roll 15 Sheet-like belt 16 Roller 17 Cutting means 18 Holding part base 19 Guide table 19 Step groove 20 on guide table 20 Traveling cutter 21 Roll 22 Endless belt 30 Sheet-like elongated member 31A, 31B Sheet-like elongated member 32 Holder entry grooves 33A, 33B Tensile member drive pin 34 Tensile member hook tip 35 Shaft 40 Forked plate 41A, 41B Drive pin Long hole to engage

Claims (3)

In a sheet-like long material cutting apparatus having elasticity, the sheet-like long material is a mechanism for intermittently sending the sheet-like long material to a cutting means,
The sheet-like long object is held on the pedestal of the holding part by a holder at one end in the longitudinal direction, and moves intermittently toward the cutting means together with the holding part,
The lower surface of the sheet-like long object moves in synchronization with the intermittent feeding mechanism of the holding unit, and one end thereof is fixed to the lower surface of the holding unit, via a roller installed immediately before the cutting means. A sheet-like long-length object feeding mechanism having elasticity, wherein the sheet-like belt is wound downward and the other end moves in contact with a sheet-like belt configured to be wound around a take-up roll. The winding roll is synchronized with the operation of the holding unit via a step motor, and the operation at the time of winding up to the end of the cutting process of the sheet-like long object is completed. Is a mechanism for feeding a sheet-like long object having elasticity according to claim 1. The sheet-like long material after cutting is sequentially fed to a rotatable endless belt disposed adjacent to the cutting means, and after the cutting process, the sheet-like long object is held in the holding portion until reaching the position at the start of work. 3. A feeding mechanism for an elastic sheet-like long object according to claim 1, wherein the feeding mechanism is pulled back and released from the holding portion.

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