JP2648832B2 - Rubber foot forming sheet - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rubber foot forming sheet comprising a plurality of rubber feet to be attached to the bottom surface of various devices for preventing slipping on a desk and preventing the installation surface from being damaged. Regarding the structure.

[0002]

2. Description of the Related Art Conventionally, a rubber sheet formed by forming an adhesive layer on one surface of an elastic layer made of synthetic rubber or the like having a predetermined thickness and pasting the adhesive layer on a highly releasable backing paper. As a raw material, a plurality of rubber feet having a predetermined shape may be formed on a sheet by punching out only the elastic layer of the sheet using a predetermined mold. The rubber feet in the rubber foot forming sheet configured as described above are manually peeled off from the backing sheet one by one in an assembling process of various devices, and are adhered to the bottom portion of the device.

[0003]

However, since the work of removing the rubber feet one by one from the rubber foot forming sheet and attaching it to the bottom surface of the device is almost always performed by hand, a large amount of labor is required. Also, unlike a label or a seal, the thickness of the elastic layer in the rubber foot forming sheet is 5
mm to 10 mm or more, when the rubber feet formed on the sheet are peeled off, the rubber feet are easily caught between the rubber feet and the surrounding elastic layers, and the peeling work is difficult and the work is difficult. However, there is a problem that automation is difficult. Accordingly, the present invention is to solve the above-mentioned problem, and an object of the present invention is to form a rubber foot that can easily separate the rubber foot from the rubber foot forming sheet and that can easily perform the operation. It is to obtain the structure of the seat.

[0004]

According to the present invention, an elastic layer having a predetermined thickness is mounted on a mount via an adhesive layer.
In a rubber foot forming sheet formed by cutting a plurality of rubber feet on the backing paper by cutting the elastic body layer into a predetermined shape, in the elastic body layer other than the rubber foot forming portion,
A cut extending in a predetermined direction is provided over the entire sheet width. In this case, the formation position of the cut is usually set at the center of the formation portion of the rubber foot or at the front and rear thereof.

Here, it is preferable that the cut is formed so as to be shifted from a line passing through the center of the rubber foot and extending in a predetermined direction in a direction intersecting the predetermined direction.

It is preferable that a plurality of rubber feet are continuously formed in the predetermined direction in a state where they are in contact with each other, and a cut is formed only at both ends in the predetermined direction.

In this case, it is desirable that the contact portion between the rubber feet formed continuously is formed in a straight line.

[0008]

According to the first aspect, a cut extending in a predetermined direction over the entire sheet width is formed at a portion other than the rubber foot forming portion, so that the rubber foot forming sheet is formed along the cut with a small radius of curvature. The rubber foot can be bent, and the rubber foot can be easily peeled off from the backing paper by the bending.

According to the second aspect, since the cut is formed so as to be shifted from the center portion of the rubber foot, a peeling area of the rubber foot when the sheet is bent along the cut is reduced, and it is easy with a slight force. In addition to being able to be peeled, the peeled portion of the rubber foot is always on the side where the cut is shifted, so that the workability is improved and the peeling operation can be automated.

According to the third aspect, by continuously forming the rubber feet in a predetermined direction, the rubber feet can be efficiently formed in the sheet, and the cuts are formed only at both ends of the sheet width. It can be peeled off very easily.

According to the fourth aspect, by making the contact portion between the continuously formed rubber feet straight, the catch between the rubber feet and the surrounding elastic layer is reduced, and the releasability is improved. At the same time, the blade shape at the time of cutting is simplified.

[0012]

Next, an embodiment of a rubber foot forming sheet according to the present invention will be described with reference to the drawings. FIG. 1 is a plan view and a side view showing the structure of a first embodiment according to the present invention. This embodiment includes a backing sheet 1 as shown in FIG. 1, an elastic layer 2 disposed on a release surface of the backing sheet 1, and an adhesive layer 3 formed on the release surface side of the elastic layer 2. It is a belt-shaped sheet to be performed. The backing paper 1 has a surface on which a resin film for improving releasability is formed. The elastic layer 2 is made of synthetic rubber, and its thickness varies depending on the type of the product.
The range is about 0 mm. The elastic layer 2 is cut by a predetermined mold as shown in the figure, and as a result, a large number of flat circular rubber feet 4 are formed.

The rubber feet 4 are continuously arranged without any space in the width direction, with a slight margin provided at both ends in the width direction of the rubber foot forming sheet. On the other hand, in the longitudinal direction of the sheet, rows of rubber feet 4 are formed at predetermined intervals.
Cuts 5 extending in the width direction of the sheet are formed at both ends of the rubber feet 4 arranged in series in the width direction of the sheet. The cut 5 is formed by shifting the center of the rubber foot 4 to the right side of a position on a straight line 6 that crosses the width direction of the sheet.

FIG. 2 is a plan view and a side view showing the structure of a second embodiment according to the present invention. In this embodiment, a plurality of oblong rubber feet 7 are formed on the elastic layer 2 of the rubber foot forming sheet. The rubber foot 7 has a linear portion 7a between the rubber foot 7 and the rubber foot 7 adjacent in the width direction of the sheet.
Are continuously formed in a state where they are in contact with each other. Cuts 8 are formed at both ends of the rubber feet 7 arranged in parallel in the width direction of the sheet, and a straight line 9 traversing the center of the rubber feet 7 in the width direction of the sheet as in the first embodiment. It is formed at a position deviated to the right from the right. Here, the planar shape of the rubber foot does not need to be a circle as in the first embodiment or an oval as in the second embodiment, but may be formed into an arbitrary shape such as an oval, an ellipse, or a rectangle. Is also good.

[Operation of the First and Second Embodiments] The first and second embodiments are bent in accordance with the straight lines 10 and 11 shown in FIGS. By doing so, the right ends of the rubber feet 4 and 7 are peeled off from the backing paper 1. Therefore, the rubber feet 4 and 7 can be completely removed from the backing paper 1 by grasping and pulling this right end.
Rubber feet 4, continuously formed in the width direction of the rubber foot forming sheet
The row of 7 and the cuts 5 and 8 make the rubber foot forming sheet easy to bend in the width direction along the straight lines 10 and 11,
The rubber feet 4 and 7 can be easily removed. Further, since the cuts 5 and 8 are formed to be shifted to the right side of the straight lines 6 and 9, the area where the rubber feet 4 and 7 are peeled off while being bent along the straight lines 10 and 11 is small. Since the right ends of the rubber feet 4 and 7 always peel off, workability is improved.

In the first and second embodiments, the surrounding elastic layer 2 may be removed before the rubber feet 4 and 7 are peeled off. In this case, the continuously formed rubber feet 4,
The presence of the cuts 7 and the cuts 5 and 8 makes it possible to easily remove the elastic layer pieces 12 and 13 (portions indicated by oblique lines) existing between the rows of the rubber feet. When there are no cuts 5 and 8, the entire elastic rubber layer 4 surrounds the entire circumference of the rubber feet 4 and 7.
7, the rubber feet 4 and 7 may be peeled off together. This means that the rubber feet 4 and 7 are at least 1
The same applies to the case where they are not formed continuously in the directions but are formed in a state of being separated from each other.

Here, in the second embodiment, since the contact portion of the continuous rubber foot 7 is linear, the hook between the rubber foot and the surrounding elastic layer when the sheet is bent is prevented. Can be almost eliminated. In the conventional rubber foot forming sheet, as shown in a third embodiment to be described later, each rubber foot is formed in a state of being separated from each other, but in this embodiment, at least one direction (the width direction of the sheet). Since the rubber feet are formed continuously, the efficiency of forming the rubber feet can be improved. Here, instead of arranging the rubber feet in series in the width direction as described above, the rubber feet may be arranged diagonally with respect to the width direction or in a staggered manner in the width direction, and in this case, the direction in which the cut extends, It may be in the width direction of the sheet or oblique to the width direction.

FIGS. 3 to 5 show how the rubber feet are automatically peeled off from the rubber foot forming sheet and removed. As shown in FIG. 3, when the roller 21 is rotated while the rubber foot forming sheet is tightly laid on the roller 21, the right end of the rubber foot 7 is deformed along the curvature of the roller 21 as shown in FIG. Slightly peels off the backing paper 1. Further, the surrounding elastic layer 2 is also deformed along the roller 21 by the cut 8, so that only the rubber foot 7 projects substantially horizontally to the right. At this time, the suction head 22 that sucks by air suction
Is dropped on the rubber feet 7 to adsorb the rubber feet 7.

As shown in FIG. 5, when the roller 21 is further rotated, the distance between the rubber foot 7 supported by the suction head 22 and the backing paper 1 is greatly increased, and the bonding surface is rapidly reduced. At this time, when the suction head 22 is moved upward, the rubber foot 7 can be completely separated from the backing paper 1.

Next, a third embodiment according to the present invention will be described. In this embodiment, as shown in FIG. 6, the rubber feet 4 are arranged with an interval therebetween. in this case,
In the width direction of the sheet, a cut 14 formed in the elastic layer 2 between the rubber feet 4 is formed. This break 14
Is formed on a straight line extending in the width direction of the sheet at a portion where the rubber foot 4 is not formed.

In this embodiment, as in the first and second embodiments, the rubber foot 4 is easily peeled off.
When the surrounding elastic layer 2 is peeled off first, the rubber feet 4 are not peeled off together. Further, since the rubber feet 4 are formed to be separated from each other, even if the mechanical feed precision at the time of forming the rubber feet is low, the shape precision of the rubber feet 4 is not affected, and the yield can be improved. .

FIGS. 7 and 8 show a mold structure for producing the rubber foot forming sheet of the first embodiment. In FIG. 7, a plurality of circular blades 31 and 32 are formed on a mold frame 30. The shapes of the circular blades 31, 32 are shown in FIG.
Corresponds to the shape of the rubber foot 4 shown in FIG. Here, the circular blades 31 formed at both ends in the width direction of the sheet are integrally provided with straight blades 33 for forming the cuts 5 at the end portions. By using the circular blades 31 and 32, the rubber foot forming sheet is moved in the X direction in the drawing every step by using the circular blades 31, 32.
By sequentially cutting the elastic layer 2 of the sheet while moving by a distance L larger than the diameter of 32, a plurality of rubber feet 4 can be formed at the same time.

FIG. 8 shows a mold structure used for manufacturing the rubber foot forming sheet of the first embodiment, similarly to FIG. Curved blade 41 meandering on formwork 40,
42 are formed. These curved blades 41 and 42 are
The semicircular blades 43 having a semicircular arc shape are connected in a zigzag shape. The curved blade 41 has a straight blade 44 at both ends and a straight blade 4 connected at a right angle to the straight blade 44.
5 are provided. On the other hand, the curved blade 42 is provided with straight blades 44 at both ends. Here, the straight blade 45
Is for forming a cut 5.

Using the mold 40 shown in FIG. 8, the elastic layer 2 of the rubber foot forming sheet is sequentially cut while moving the rubber foot forming sheet by the distance L in the X direction in the figure, whereby a plurality of rubber feet are formed. Can be formed. In this case, the mold 40
According to the above, even if there is a slight shift in the moving direction and the moving distance between the mold and the sheet, the shape of the rubber feet is slightly deformed, but the rubber feet are chipped due to the overlap between the adjacent rubber feet. Therefore, the rubber feet 4 continuously arranged in the width direction of the rubber foot forming sheet can be formed with good yield. In the mold 40 shown in FIG. 8, the curved blades 41 and 42 are formed at an interval of two steps, but the interval may of course be one step.

[0025]

As described above, according to the present invention, since a cut extending in a predetermined direction is formed over the entire sheet width except for the rubber foot forming portion in the elastic layer, the rubber foot forming sheet is formed. Can be bent with a small radius of curvature along the cut, and the bending allows the rubber foot to be easily peeled off from the backing paper.

[Brief description of the drawings]

FIG. 1 is a plan view and a side view showing a structure of a first embodiment according to the present invention.

FIG. 2 is a plan view and a side view showing a structure of a second embodiment according to the present invention.

FIG. 3 is an enlarged cross-sectional view showing a method of peeling a rubber foot from the rubber foot forming sheet of each of the above embodiments.

FIG. 4 is an enlarged cross-sectional view showing a method of peeling a rubber foot from the rubber foot forming sheet of each of the above embodiments.

FIG. 5 is an enlarged cross-sectional view showing a method of peeling a rubber foot from the rubber foot forming sheet of each of the above embodiments.

FIG. 6 is a plan view and a side view showing a structure of a third embodiment according to the present invention.

FIG. 7 is a plan view showing a mold structure for manufacturing the first embodiment.

FIG. 8 is a plan view showing another formwork structure for manufacturing the first embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Mount 2 Elastic layer 3 Adhesive layer 4,7 Rubber foot 5,8,14 Cut 12,13 Elastic layer piece

Claims (4)

(57) [Claims] 1. An elastic layer having a predetermined thickness is mounted on a mount via an adhesive layer, and a plurality of rubber feet are separated from the mount by cutting the elastic layer into a predetermined shape. In a rubber foot forming sheet formed so as to be capable of being formed, a cut extending in a predetermined direction is provided in the elastic layer other than the rubber foot forming portion over the entire sheet width. . 2. The method according to claim 1, wherein the cut passes from a line passing through the center of the rubber foot and extending in the predetermined direction.
A rubber foot forming sheet which is formed so as to be shifted in a direction intersecting with the predetermined direction. 3. The method according to claim 1, wherein the plurality of rubber feet are formed continuously in the predetermined direction while being in contact with each other, and the cuts are formed only at both ends in the predetermined direction. Characteristic rubber foot forming sheet. 4. The rubber foot forming sheet according to claim 3, wherein a contact portion between the continuously formed rubber feet is formed in a straight line.