JP4094839B2 - Finger suck cutting method - Google Patents

Description

[0001]
[Industrial application fields]
The present invention relates to a method for easily and surely cutting an opening of a finger sack linearly in an on-machine manufacturing process, and a finger sack manufactured by the cutting method.
[0002]
[Prior art]
Currently, various types of finger sack are manufactured and sold. Among them, thin finger sacks having a thickness of about 0.1 mm are often used as industrial finger sacks used in the electronics industry and the like because of their feeling of use. These industrial finger sacs are classified into a type with a mouth wound in which the opening is wound in a roll shape and a cut type in which the opening is cut.
The mouth-wrapped type finger sack has a feeling that the mouth-wrapped part tightens the finger after the finger sack is mounted, and there is a problem that the finger gets tired if the finger sack is continuously mounted. In order to avoid this problem, there is a cut type in which the opening of the finger sack is cut linearly.
[0003]
As a conventional technique, after the finger sack is released from the manufacturing apparatus, the opening of the finger sack is manually cut using a scissors or the like. In this case, the finger sack cannot be cut linearly unless it is cut in a stretched state that cannot be wrinkled, and it is not easy to cut the finger sack while adjusting the length of the finger sack. In particular, the thin natural rubber finger sack is very difficult to cut because it easily deforms and has elasticity. If the finger sack is not cut linearly, the appearance is not good.For example, in the case of a finger sack with an opening cut into a concave shape, when the finger sack is widened to fit the concave part, The stress is concentrated and the finger sack may be cut off, which is very problematic.
In addition, if the finger sack is cut after being released from the manufacturing machine, the finger sack must be cut one by one, which requires a great deal of time and manpower, which requires considerable manufacturing costs. End up.
[0004]
Some gloves have an opening cut into a wave shape. Similarly, if the finger sack is cut into a corrugated shape, the corrugated part will break when the finger sack is worn, and the corrugated part will enter between the finger sack and the finger sack. Have difficulty. In addition, when the finger sack is spread in an attempt to wear the finger sack, the stress concentrates on the concave portion of the corrugation, and there is a problem that the finger sack is easily cut. Therefore, it is preferable that the opening of the finger sack be cut linearly or nearly linearly.
[0005]
In order to attach the finger sack to the finger, the opening of the finger sack is picked and widened with a finger other than the finger to be attached, and the finger to be used is inserted and attached. For example, when a finger sack is attached to the index finger of the right hand, the opening part of the finger sack is picked and widened with the thumb and middle finger of the right hand and the index finger and thumb of the left hand, and the index finger of the right hand is inserted and attached.
Since the finger sack has a higher rate of expanding the opening with respect to each opening than the case of wearing a glove, there is a greater risk of breakage and it is necessary to cut more linearly.
[0006]
[Problems to be solved by the invention]
The present invention relates to a method for linearly cutting an opening of a finger sack easily and reliably on-machine in a finger sack manufacturing process. By continuously cutting the finger sack on the machine, it is possible to achieve uniform quality and a significant reduction in manufacturing costs.
[0007]
[Means for Solving the Problems]
In the conventional cut-type finger sack in which the opening is cut linearly, the opening of the finger sack is cut with a scissors or the like after the finger sack is released from the manufacturing apparatus.
[0008]
Some gloves have an opening cut into a wave shape. Similarly, if the finger sack is cut into a corrugated shape, the corrugated part will break when the finger sack is worn, and the corrugated part will enter between the finger sack and the finger sack. Have difficulty. In addition, when the finger sack is spread out in an attempt to wear the finger sack, stress concentrates on the concave portion of the corrugation, and the finger sack is easily cut off. Therefore, it is preferable to cut the opening of the finger sack linearly.
Therefore, the inventors of the present invention have made extensive efforts to develop a method capable of cutting a finger sack continuously and linearly on-machine.
[0009]
First, in order to cut the finger sac on an on-machine, the present inventors considered rotating the mold with the finger sack attached on a linear cutter to cut the finger sack. However, with this method, the rotation direction of the mold and the angle of the cutter must be made parallel to each other, and if there is any eccentricity in the rotation of the mold, the mold rotates once over the cutter. When the above is done, the cut ends of the finger sucks do not overlap well, and it is extremely difficult to cut the finger sucks with certainty.
[0010]
Therefore, the present inventors have made extensive efforts to develop a method for reliably cutting the finger sack even if some deformation occurs in the mold. As a result, first, at the start of cutting, the angle of the cutter is slightly inclined in the direction of the tip of the finger sack in advance, and the finger sack is cut in a spiral shape. (If the angle is too tight, the cutting surface of the finger sack becomes difficult to be linear.) Before the mold is rotated once on the cutter, the inclination of the cutter is adjusted in the direction of the opening of the finger sack. Then, after the mold was rotated once, the finger sac was reliably cut by cutting the finger sack so as to intersect with each other.
In addition, the shape of the cut cut by crossing is somewhat convex, so that when the finger sack is worn, even if the opening of the finger sack is widened, stress does not concentrate on the cut, and the finger is cut from the cut part. The sack will not break.
[0011]
There are various finger sack materials such as natural rubber (NR), NBR, etc. If the finger sack film is not completely dried during the finger sack manufacturing process, it can be cut with a normal temperature cutter. However, it was found that when the finger sack dries to some extent, it becomes difficult to cut with a normal temperature cutter. Accordingly, the inventors of the present invention heated the cutter part and tried to cut the finger sack as described above, and as a result, the finger sack film could be reliably cut even when it was somewhat dry. Moreover, since the cut surface is cut in such a state that it is welded in half by the heat of the cutter, the number of breaks from the cut surface of the finger sack is reduced when the finger sack is attached than when cut with a normal temperature cutter.
That is, the present invention
(1) In the continuous on-machine cutting method of the natural rubber or synthetic rubber latex finger sack opening formed on the mold by the dipping method, the finger sack is rotated with respect to the moving direction of the mold while rotating the mold. Touch the cutter tilted toward the tip, cut it in a spiral manner toward the tip of the finger sack, then reverse the tilt direction of the cutter, and cross the trajectory after the first cutting point of the finger sack. A continuous on-machine opening cutting method for latex finger sack, characterized in that the opening is cut linearly.
(2) The continuous on-machine opening cutting method of the latex finger sac according to ( 1 ) , wherein the finger sac opening is linearly cut using a heated cutter.
(3) A latex finger sack product produced by the continuous on-machine opening cutting method according to (1) or (2).
(4) In the continuous on-machine cutting method of the natural rubber or synthetic rubber latex finger sack opening formed on the mold by the dipping method, the finger sack is rotated with respect to the moving direction of the mold while rotating the mold. Touch the cutter tilted toward the tip, cut it in a spiral manner toward the tip of the finger sack, then reverse the tilt direction of the cutter, and cross the trajectory after the first cutting point of the finger sack. A continuous on-machine opening cutting device for latex finger sack, characterized in that the opening is cut linearly.
(5) The latex finger sack continuous on-machine opening cutting device according to (4), wherein the cutter is moved.
It is.
Here, cutting the finger sack opening in a straight line means cutting the finger sack opening in a straight line at a right angle by visually observing the finger sack and cutting it so that the cut part looks substantially straight. Not to do.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present invention will be described in detail.
The cut-type finger sack of the present invention in which the opening is cut has no mouth-wrapping at the opening, so that the mouth-wrapped part does not tighten the finger after the finger sack is attached, and the finger sack continues to be attached. Even fingers are less tired. The purpose of using the finger sack of the present invention can be considered variously for industrial use and medical use, but is not particularly limited. The thickness and length of the finger sack of the present invention are not particularly limited. It is possible to change the length of the finger sack by changing the installation position of the on-machine cutting device of the present invention.
[0013]
Some commercially available gloves have an opening cut into a wave shape. Similarly, if the finger sack is cut into a corrugated shape, the corrugated part will break when the finger sack is worn, and the corrugated part will enter between the finger sack and the finger sack. Have difficulty. In addition, when the finger sack is spread out in an attempt to wear the finger sack, stress concentrates on the concave portion of the corrugation, and the finger sack is easily cut off. Therefore, it is preferable to cut the opening of the finger sack linearly. Cutting the finger sack opening in a straight line means that the finger sack is visually cut and cut so that the cut part looks substantially straight. It's not cutting.
[0014]
The finger sack opening cutting method of the present invention is applied to a cutter that is inclined toward the tip of the finger sack with respect to the direction of movement of the mold while rotating the mold as shown in FIG. Cut in a spiral shape in the tip direction, and then reverse the tilt direction of the cutter, and cut the finger suck opening linearly by crossing the cutting trajectory after the first cutting point of the finger suck. Actually, this cut portion is cut obliquely, but since the inclination angle is small, it looks like it is cut in a straight line almost at right angles to the finger sack.
Theoretically, the finger sack can be cut by rotating the forming die in parallel on a straight cutter. However, since the forming die is eccentric unless it is a very precise machine, it is very difficult to cross the cutting trajectories. Since the cutting method of the present invention spirally cuts in the direction of the tip of the finger sac and then reverses the tilt direction of the cutter in the middle of the finger sack cutting, the cutting trajectory can be surely crossed even if the mold is somewhat eccentric. Is possible.
The angle of the cutter when cutting the finger sack is not particularly limited, but it is preferable that the finger sack is shifted by about 1 mm when the mold is rotated once.
By the above method, the finger sack can be continuously cut on-machine.
[0015]
The angle and shape of the cutter reversing portion 4 in FIG. 1 are not particularly limited, but it is preferable that the cutter inversion portion 4 has a curved shape as shown in FIG. By making the cutter reversal part curved, even if the finger sack opening is widened, it is difficult for stress to concentrate on that part.
[0016]
There are various finger sack materials such as natural rubber (NR), NBR, etc. If the finger sack film is not completely dried during the manufacturing process of the finger sack, it can be cut with a normal temperature cutter. However, when the finger sac is dried to some extent, the finger sack film is cross-linked to develop film strength, and it is difficult to cut with a normal temperature cutter. The inventors of the present invention heated the cutter portion and tried to cut the finger sack as described above, and as a result, the finger sack was reliably cut even when the film of the finger sack was somewhat dry. Moreover, since the cut surface is cut in such a state that it is welded in half by the heat of the cutter, the number of times that the finger sack breaks from the cut surface is reduced when the finger sack is attached, compared to the case cut with a normal temperature cutter.
Although the heating method of a cutter is not specifically limited, If an electric heater etc. are used, a cutter can be heated easily. Moreover, although the temperature of a cutter is based also on the dry state of a finger suck film, 200 degreeC or more is preferable.
In consideration of heating, ceramic may be used as the material of the cutter, but a cheaper metal is preferable. The material of the finger sack mold is preferably ceramic or glass.
[0017]
With the above method, continuous on-machine cutting of the finger sac is possible, but since the mold moves continuously on the cutter, the cutter is severely damaged depending on the cutting method. If the cutter breaks, the cutter must be replaced and continuous cutting must be interrupted. For example, by preparing a long cutter, rotating a roller sandwiching the cutter, and gradually moving the cutter, an unused cutter can always be used, so that continuous cutting for a long time is possible. Although the cutter can be moved continuously or intermittently, it is preferable that the cutter is moved continuously because the mold is continuously moved.
[0018]
By manufacturing the finger sack using the above-described method and apparatus for continuously cutting the finger sack on-machine, uniform quality and a significant reduction in manufacturing cost can be achieved.
[0019]
【Example】
Hereinafter, examples of the present invention will be described with reference to the drawings, but the present invention is not limited to the examples.
Example 1
FIG. 1 is an explanatory diagram of a cutting method. In FIG. 1, a finger sack 1 is formed on a mold 2 and the mold 2 is moved in the direction F while rotating in the R direction. Cutting is started by rotating the mold 2 against the cutter 3 from the cutting start position 7. At this time, since the finger sac moves while rotating on the cutter 3 which is inclined to the finger sack tip 5 direction, it spirals in the direction of the finger sack tip 5 from the cutting start position 7 to the reversal part 4 of the cutter. Cut into shapes. Since the inclination angle of the cutter is reversed from the reversal portion 4 of the cutter, the finger suck is cut in the direction of the end 6 of the finger suck. At this time, it is possible to reliably cut the finger sack opening by cutting the finger sac at the cutting start position 7 or later so as to intersect with each other. The cutting of the finger sack is completed by separating the mold 2 from the cutter at the cutting end position 8. This cutting method can reliably cut the preliminary sack opening even if the mold is slightly eccentric.
The mold 2 is rotated several times on the cutter 3 that is inclined to the tip of the finger sack 5 and cut into a spiral shape. After that, cutting is possible even if the cutter is reversed. The film of the sack end 6 remains in a spiral band shape, and may cause a problem by adhering to the adjacent mold. Accordingly, it is preferable to cut the film so that the cut film is not spirally left as much as possible after the start of cutting, and immediately before the mold is rotated once.
The cutting trajectory of the finger sack is as shown in FIG. The trajectory cut from the cutting start position 7 is reversed in the direction of the cutting trajectory at the reversal part 4 of the cutter, the cutting trajectory intersects at the intersection 9, and the cutting ends at the cutting end position 8. FIG. 3 shows a developed view of the finger sack in which the finger sack of FIG. 2 is cut in the AA ′ direction and further cut in the BB ′ direction and developed into a sheet shape.
By making the corner of the reversal part 4 of the cutter into a curved shape as shown in FIG. 4, there is no concave corner on the finger sack cutting surface, so that even if the finger sack opening is widened, stress is not concentrated on that part. Can be cut. When the finger suck cut by reducing the tilt angle of the cutter was developed in the same manner as in FIG. 3 and the cutting trajectory of the finger suck was viewed, it became linear as shown in FIG. Since the finger sack 1 developed in the form of a sheet shown in FIG. 5 has already been cut, it is actually cut as shown in FIG.
[0020]
There are various types of finger sack materials such as natural rubber (NR), NBR, etc. If the finger sack film is not completely dry during the finger sack manufacturing process, the method of Example 1 can be used with a normal temperature cutter. Can be cut. However, it was found that when the finger sack dries to some extent, the finger sack film is cross-linked and develops film strength, which makes it difficult to cut with a normal temperature cutter. Therefore, the inventors heated the cutter 3 to about 200 ° C. with the electric heater 10 as shown in FIG. 7 and tried to cut the finger sack 1 as described above. Even if there was, it was able to cut reliably. Moreover, since the cut surface is cut in such a state that it is welded in half by the heat of the cutter 3, the number of breaks from the cut surface of the finger sack is reduced when the finger sack is attached, compared to the case cut with a normal temperature cutter.
[0021]
The method of Example 1 and Example 2 enables continuous on-machine cutting of the finger sack. However, since the mold moves continuously on the cutter, the cutter is severely damaged depending on the cutting method. If the cutter breaks, the cutter must be replaced and continuous cutting must be interrupted. For example, if a long cutter 3 is prepared as shown in FIG. 8 and the roller 11 sandwiching the cutter 3 is rotated in the direction of arrow F2, and the cutter 3 is gradually moved in the direction of arrow F3, an unused cutter is always used. Can be used for continuous cutting for a long time. Although the cutter can be moved continuously or intermittently, it is preferable that the cutter is moved continuously because the mold is continuously moved.
[0022]
【The invention's effect】
As described above, according to the on-machine cutting method and apparatus of the continuous finger sack opening of the present invention, it becomes possible to continuously and easily cut the finger sack opening linearly, Uniform quality and a significant reduction in manufacturing costs can be achieved.
[Brief description of the drawings]
FIG. 1 is an explanatory diagram for cutting a finger sack.
FIG. 2 is an explanatory view of a cutting locus of a finger sack.
FIG. 3 is a development view showing a cutting trajectory of a finger sack.
FIG. 4 is an explanatory diagram of a reversing part of a cutter.
FIG. 5 is a development view showing a cutting locus of a finger sack.
FIG. 6 is a development view showing a cut state of the finger sack.
FIG. 7 is an explanatory diagram for cutting a finger sack by heating a cutter.
FIG. 8 is an explanatory diagram of an apparatus for moving a cutter.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Finger sack 2 Mold 3 Cutter 4 Reversing part 5 Cutter tip 6 Finger sack edge 7 Cutting start position 8 Cutting end position 9 Intersection 10 Heater 11 Roller

Claims (3)

  In the continuous on-machine cutting method of natural rubber or synthetic rubber latex finger sack opening molded on the mold by the dipping method, while rotating the mold, toward the tip direction of the finger sack with respect to the moving direction of the mold Touch the tilted cutter, cut it spirally in the direction of the tip of the finger sack, then reverse the tilt direction of the cutter, cross the cutting trajectory after the first cutting point of the finger sack, and open the finger sack opening A continuous on-machine opening cutting method for latex finger sack, characterized by cutting linearly.   The method for continuously cutting an on-machine opening of a latex finger sac according to claim 1, wherein the finger sac opening is linearly cut using a heated cutter.   In the continuous on-machine cutting method of natural rubber or synthetic rubber latex finger sack opening molded on the mold by the dipping method, while rotating the mold, toward the tip direction of the finger sack with respect to the moving direction of the mold Touch the tilted cutter, cut it spirally in the direction of the tip of the finger sack, then reverse the tilt direction of the cutter, cross the cutting trajectory after the first cutting point of the finger sack, and open the finger sack opening A continuous on-machine opening cutting device for latex finger sack, characterized by cutting linearly.

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