JP3536032B2 - Method and apparatus for manufacturing rubber gloves for work - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for manufacturing working gloves generally called rubber-clad gloves, particularly working rubber-clad gloves which have been subjected to an instep process.

[0002]

2. Description of the Related Art Conventionally, so-called rubber-clad gloves are mainly manufactured by the following method. The manufacturing method will be briefly described.

First, there is a method of sticking a rubber sheet by hot press bonding. In this method, a knitted glove is attached to a flat hand, a palm-shaped unvulcanized rubber sheet is placed on the knitted glove, and the rubber sheet is attached by heat press bonding with a press machine, and then the knitted glove is three-dimensional. It is mounted on the molding hand mold and molded by thermal vulcanization.

In this hot pressing method, a rubber sheet may be attached only to the palm surface, or a rubber sheet may be attached to both the palm surface and the back surface. When a rubber sheet is attached only to the palm surface, it is excellent in terms of breathability, but if the anti-slip effect is exerted when gripping an object, the knitted part loses the grip of the rubber sheet. There is a problem that the gloves rotate (especially the fingertips). Further, when the rubber sheets are attached to both the palm surface and the back surface of the palm, it is general to use a rubber sheet that has been cut into an instep shape beforehand to perform the instep processing. In this case, there is no problem with breathability and holdability, but it is necessary to align the knitted gloves and the rubber sheet in the manufacturing process, and accuracy is required.
There is a problem that the (rubber sheet) is apt to be displaced and the manufacturing is difficult. Therefore, there is a problem in that the gloves cannot be finely processed such as removing the upper part of the fingers and the gloves become hard in terms of flexibility.

Further, depending on the amount of pressing pressure, there is a problem that the pressure is strong and the rubber sheet is slipped into the glove to make it hard, or the pressure is weak and the rubber sheet is easily peeled off.

Secondly, there is a method of sticking a rubber sheet with a rubber paste. In this method, a knitted glove is attached to a flat hand, a general rubber glue in which a solvent and a rubber material are melted is applied to the surface of the knitted glove by a method such as coating or dipping, and then the palm-shaped glove is not applied. A rubber vulcanizate sheet is attached to the palm of a knitted glove, and then the knitted glove is replaced in a three-dimensional hand mold to perform molding by thermal vulcanization.

In this rubber gluing method, as in the case of the hot pressing method described above, when an anti-slip effect is exerted when grasping an object, the knitting portion loses the grip force of the rubber sheet and the glove rotates. There is a problem (especially the fingertip part). Further, there is a problem that the rubber paste obstructs ventilation (especially on the back of the hand) and the air permeability is poor. Further, there is a problem that dust or the like is easily attached to the rubber paste and the gloves are easily soiled. In addition, since rubber paste is generally used by dissolving a solvent (mainly gasoline) and a rubber material, the ratio of exerting a load on a worker and the environment at the time of manufacturing is large.

Further, Japanese Patent Publication No. 62584/1993 describes an example of a method of continuously manufacturing by a conveyor system using a molding mold having a cutting edge for a rubber sheet. A huge roll is required, which is not realistic when considering the cost of manufacturing equipment and securing the installation area of equipment.

[0009]

As described above, in the conventional method for manufacturing rubber-tensioned gloves, breathability, holdability, and
There are problems such as poor flexibility, poor workability, and easy soiling of gloves. Further, there are problems that the gloves become hard and the rubber sheet is easily peeled off depending on the manufacturing process. Further, there is a problem that it is costly or impractical in terms of equipment.

Therefore, an object of the present invention is to provide a rubber glove for work which does not cause such problems, is excellent in breathability, holdability, flexibility and workability, has an easy manufacturing process and is of high quality . It is to provide a manufacturing method and a manufacturing apparatus.

[0011]

In order to achieve the above object, in the method for manufacturing a rubber glove for work according to the present invention, a first step of mounting a knitted glove (1) on a flat hand (2). And a concave portion (A) having substantially the same shape as the flat plate type hand mold (2) for fitting the flat plate type hand mold (2) on the upper surface, and an outer blade (C) for cutting a rubber sheet on the outer peripheral edge thereof. Along with
On the molding mold (5), in which the inner blade (D) for cutting the rubber sheet is provided at the outer peripheral edge of the portion (B) inside the recess (A), which corresponds to the backing for gloves, The unvulcanized rubber sheet (3) of (1) is placed, and the flat bill (2) with the knitted gloves (1) is set on the unvulcanized rubber sheet (3). 4)
The second step of placing the slab and the unvulcanized rubber sheet (4) for the palm that is set, the heater plate (6) having the resin plate (7) on the lower surface is pressed against the molding mold (5). The third step is to perform pressure bonding with a heat press to the rubber sheet, stick a rubber sheet, punch the upper surface of the glove, and cut an extra rubber sheet around the glove at the same time. The knitted gloves (10) to which the sheet is attached are released from the mold, replaced with the three-dimensional molding hand mold (9), and molded by thermal vulcanization, which is a fourth step.

The apparatus for manufacturing rubber gloves for work according to the present invention is almost the same as the flat hand mold (2) for fitting the flat hand mold (2) having the knitted gloves (1) mounted on the upper surface. A concave portion (A) of the same shape is formed, and an outer blade (C) for cutting a rubber sheet is provided on the outer peripheral edge of the concave portion (A). A molding mold (5) provided with an inner blade (D) for cutting a rubber sheet, and a molding plate (5) provided movably up and down on the molding mold (5) and having a resin plate (7) on the bottom surface. It consists of the heater plate (6) arranged, and the flat mold (2) with the unvulcanized rubber sheet (3) for the back of the hand and the knitted gloves (1) on the molding mold (5), palm The unvulcanized rubber sheet (4) set for the Pressing a (6), the crimping by heat pressing, and performing cut extra rubber sheet instep punching and gloves periphery of sticking and gloves instep surface of the rubber sheet.

[0013]

Symbols in parentheses indicate corresponding elements or matters described in the drawings and embodiments of the invention described later.

According to the present invention, the following effects are exhibited by combining the hot pressing method and the molding mold. (1) Glove is manufactured by sticking a rubber sheet without using rubber glue (solvent type) at all, so that the ratio of giving a load to an operator and the environment is small. (2) By sticking a rubber sheet that has been finely punched on the back of the hand (for example, the fingers are also punched), gloves with excellent breathability, flexibility, holdability, and workability can be obtained. Can be manufactured. (3) Since the molding mold is processed to have a recessed portion, and the outer edge and the outer edge of the portion corresponding to the glove shell removal are provided with an outer blade and an inner blade for cutting the rubber sheet, the rubber sheet is hot-pressed. Crimping, instep processing, and cutting of the extra rubber sheet around the gloves can be done at the same time, shortening the work process and time. (4) By fixing the flat plate-shaped hand mold to the molding mold and performing the hot press bonding, it is possible to stably perform the high-precision punching without worrying about the deviation of the rubber sheet. (5) By arranging the resin plate on the heater plate, the resin plate serves as a cushioning material during pressing to prevent damage to the molding mold, and the softness of the resin plate prevents the pressure during pressing from being flat. The outer periphery of the mold can be dispersed, and the rubber sheet wraps around the side surface (outer periphery) of the glove so that the part can be adhered well.

[0016]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. The working rubber-clad glove according to the embodiment of the present invention is manufactured as follows.

First Step As shown in FIG. 1, first, a pair of left and right light metal flat plate-shaped hand molds 2 are knitted by knitting knitted gloves 1
Put on.

Second Step Next, as shown in FIG. 2, the unvulcanized rubber sheet 3 for the back of the hand is placed on the molding mold 5 which constitutes the press together with the heater plate 6, and the knitted gloves are placed thereon. A flat plate-shaped bill 2 attached with 1 is set, and an unvulcanized rubber sheet 4 for palm is placed on the knitted gloves 1.

The upper surface of the molding mold 5 is shown in FIG.
Further, as shown in FIG. 4, a recess A having substantially the same shape as that of the flat plate hand mold 2 is formed for fitting the flat plate hand mold 2. Further, an outer blade C for cutting a rubber sheet is provided on the outer peripheral edge of the recess A, and further, an outer edge of the portion B corresponding to the glove upper removal inside the recess A is provided for rubber sheet cutting located at the upper extraction portion. An inner blade D is provided. Further, the heater plate 6 located above the molding mold 5 is provided so as to be movable up and down by hydraulic pressure, although not limited to this. A resin plate 7 is arranged on the lower surface of the heater plate 6.

Third Step Next, the heater plate 6 is moved to the lower side together with the resin plate 7 and pressed against the unvulcanized rubber sheet 4 for the palm set on the molding mold 5 to form the molding mold. The 5 is press-bonded by a hot press. As a result, as shown in FIG. 5, the unvulcanized rubber sheets 3 and 4 are adhered, and the outer blade C and the inner blade D work to punch out the upper surface of the glove and an extra rubber sheet around the glove. It is designed to cut the same time.

Incidentally, in the present embodiment, the thickness of the rubber sheets 3 and 4 is 0.8 mm for the palm and 0.5 for the back in consideration of manufacturability, workability of the finished product, flexibility and the like.
The recess A of the molding mold 5 has a height of 3.8 mm for the entire flat plate mold, and the height B of the inner blade D is 0.3 mm although the portion B corresponding to the instep is not particularly set. This is because the flat hand 2 and the knitted gloves 1 and the rubber sheets 3 and 4 on both sides have a combined thickness of about 4.8 mm and the rubber sheet 3 for the back has a thickness of 0.5 mm. Considering good adhesion between the knitted gloves 1 and the rubber sheets 3 and 4, as a result of various tests, this value was obtained. The hot pressing is performed at 120 ° C. for the molding mold 5 and 170 ° C. for the heater plate 6 at a pressure of 5 kg / cm 2 for 45 seconds. Naturally, these numerical values vary depending on changes in the material of the knitted gloves 1, the knitting method, the thickness of the rubber sheets 3 and 4, and the like.

Fourth Step Then, as shown in FIG. 6, the knitted gloves 10 to which the rubber sheet is stuck are released from the flat plate-shaped hand mold 2 and replaced with the light metal three-dimensional molding hand mold 9. After that, when molding is performed by thermal vulcanization in a vulcanizing furnace, a rubber glove for work as shown in FIG. 7 is completed. As shown in FIG. 8 (a), the cross section of the fingertips of the rubber-tipped gloves for work is firmly held on the palm side and the back side, so when gripping an object as shown in FIG. 8 (b). When the anti-slip effect is exerted, the gloves do not rotate due to the knitting force of the rubber sheet losing the grip. In FIG. 9, for comparison, a rubber sheet is attached only on the palm side (a).
However, (b) shows the case where the knitted portion loses the gripping force of the rubber sheet and the glove rotates. Incidentally, in the present embodiment, the vulcanization temperature is set to 1 in consideration of the degree of crosslinking of rubber and the like.
The temperature is 35 ° C to 138 ° C, and the vulcanization time is 45 minutes.

By the above-mentioned first to fourth steps, it is possible to manufacture high-quality work rubber-tensioned gloves which are excellent in breathability, holdability, flexibility, workability, easy to manufacture, and high in quality.

[0024]

As described above, according to the present invention, the following effects are exhibited by combining the hot pressing method and the molding mold. (1) Glove is manufactured by sticking a rubber sheet without using rubber glue (solvent type) at all, so that the ratio of giving a load to an operator and the environment is small. (2) By sticking a rubber sheet that has been finely punched on the back of the hand (for example, the fingers are also punched), gloves with excellent breathability, flexibility, holdability, and workability can be obtained. Can be manufactured. (3) Since the molding mold is processed to have a recessed portion, and the outer edge and the outer edge of the portion corresponding to the glove shell removal are provided with an outer blade and an inner blade for cutting the rubber sheet, the rubber sheet is hot-pressed. Crimping, instep processing, and cutting of the extra rubber sheet around the gloves can be done at the same time, shortening the work process and time. (4) By fixing the flat plate-shaped hand mold to the molding mold and performing the hot press bonding, it is possible to stably perform the high-precision punching without worrying about the deviation of the rubber sheet. (5) By arranging the resin plate on the heater plate, the resin plate serves as a cushioning material during pressing to prevent damage to the molding mold, and the softness of the resin plate prevents the pressure during pressing from being flat. The outer periphery of the mold can be dispersed, and the rubber sheet wraps around the side surface (outer periphery) of the glove so that the part can be adhered well.

[Brief description of drawings]

FIG. 1 is an explanatory diagram showing a process of mounting a knitted glove on a flat hand.

FIG. 2 is an explanatory diagram showing a step of performing hot press compression bonding of an unvulcanized rubber sheet on a knitted glove.

FIG. 3 is an explanatory view showing the upper surface of a molding mold in detail.

FIG. 4 is a cross-sectional view taken along line XX of FIG. 3, showing a state of hot press bonding.

5A and 5B are explanatory views showing a state of sticking a rubber sheet, cutting a back portion, and cutting an excess rubber sheet around the glove, where FIG. 5A shows the palm side and FIG. 5B shows the back side.

FIG. 6 is an explanatory view showing a step of mounting a knitted glove with a rubber sheet attached to a hand mold for three-dimensional molding and performing thermal vulcanization molding.

FIG. 7 is an external perspective view showing the completed rubber-coated gloves for work.

8A and 8B are cross-sectional views showing a fingertip portion of the work rubber-tensioned glove shown in FIG. 7, where FIG. 8A shows a normal state and FIG. 8B shows a case where a force acts in the arrow direction.

9A and 9B are cross-sectional views showing fingertips of a rubber glove for work according to a conventional example, where FIG. 9A shows a normal state, and FIG. 9B shows a case where a force acts in the arrow direction.

[Explanation of symbols]

1 Knitted gloves 2 Flat hand type 3 Unvulcanized rubber sheet for back 4 Unvulcanized rubber sheet for palm 5 Mold for molding 6 heater plate 7 resin plate 9 Hand mold for three-dimensional molding 10 Knitted gloves with rubber sheets attached A Flat type hand fitting recess B Uncut part C Outer blade for cutting the outer circumference of gloves D Inner blade for cutting gloves

─────────────────────────────────────────────────── ─── Continuation of front page (56) Reference JP-A-1-292106 (JP, A) JP-A-62-33807 (JP, A) (58) Fields investigated (Int.Cl. ⁷ , DB name) A41D 19/00, 19/04

Claims (2)

(57) [Claims] 1. A first method for mounting a knitted glove on a flat-shaped hand mold.
Steps and a recess having substantially the same shape as that of the flat plate hand mold for fitting the flat plate hand mold are formed on the upper surface, and an outer blade for cutting a rubber sheet is provided on the outer peripheral edge thereof, and the glove shell inside the recess is formed. An unvulcanized rubber sheet for the back of the hand was placed on a molding mold that was provided with an inner blade for cutting the rubber sheet located on the outside of the instep on the outer periphery of the part corresponding to the removal, and knitted gloves were attached on it. The second step of setting the flat bill, and further placing an unvulcanized rubber sheet for palm on the knitted gloves, and from the set unvulcanized rubber sheet for palm,
Press the heater plate with the resin plate on the lower surface, press-bond to the molding mold with a heat press, attach the rubber sheet, cut the upper surface of the glove, and cut the extra rubber sheet around the glove. And a fourth step in which the knitted gloves to which the rubber sheet is attached are released from the flat plate-shaped hand mold, replaced with the three-dimensional molding hand mold, and molded by thermal vulcanization. A method for producing a rubber-coated glove for work, which comprises: 2. A recess having substantially the same shape as that of the flat plate hand mold is formed on the upper surface for fitting the flat plate hand mold fitted with knitted gloves, and an outer blade for cutting a rubber sheet is provided on the outer peripheral edge thereof. A molding mold in which an inner blade for cutting a rubber sheet is provided on the outer peripheral edge of a portion corresponding to the glove shell removal inside the recess, and a mold which is vertically movable above the molding mold. And a heater plate having a resin plate on the lower surface, and an unvulcanized rubber sheet for the back of the hand, a flat bill with knitted gloves attached, and an unvulcanized rubber sheet for the palm on the molding mold. From above that set in order, further press the heater plate, and press-bond by hot press,
Equipment for manufacturing rubber gloves for work, which is characterized by sticking rubber sheets, punching the upper surface of gloves and cutting excess rubber sheets around the gloves.