JPS5834151B2 - Manufacturing method for baseball catching equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in the manufacturing method of baseball catching tools such as baseball mitts, gloves, first mitts, and the like.

Conventional baseball catching tools, such as baseball gloves, baseball gloves, and first gloves, catch the ball with the ball catching part of the leather chamber of the ball catching surface or the surrounding area or web. Because there was a risk that the ball in contact with the surface of the ball-catching surface leather could slip and cause a fumble or fall, the ball should not be caught on the entire surface of the chamber of the outer leather portion of the ball-catching surface leather, or on the entire surface and part of the fingers. In order to prevent the ball from slipping, a method was proposed in which a large number of concave portions were molded using heat embossing or the like.

However, the anti-slip protrusion or recess formed from the entire surface of the chamber of the outer leather part of the ball-catching surface leather of the Urakyu-gugu base manufactured by the above method, or from the entire surface of the chamber to a part of each finger section. Not only does it gradually disappear due to abrasion during use and lose its anti-slip effect, but also the ball-catching area of the ball-catching surface leather having the protrusions or depressions is heated to a temperature exceeding 100°C. Natural leather loses its unique flexibility (hardens) and at the same time shrinks and deforms, deteriorates, and cracks. Not only is this likely to be difficult, but it also shortens its service life.

For this reason, in addition, in the outer leather part of the ball-catching leather, there are a plurality of through holes that are arranged radially, petal-shaped, etc., mainly in the ball-catching part, and are interposed between the stem part and the back stem part of the ball-catching surface leather. A baseball catching device has been proposed in which the convex portions of a rubber plate are fitted and the circumferential surface of each convex portion is bonded to the cut surface of each through hole in the leather portion using an adhesive.

However, since the surface leather of the ball-catching surface of this ball-catching tool is flexible and thin, each of the punched through holes is easily deformed, resulting in gaps between each of the through holes and each of the rubber-like protrusions. However, since the adhesive area between the cut surface of each through hole and the circumferential surface of each through hole convex portion is extremely small and it is impossible to apply pressure to the adhesive surface, not only is the adhesive state extremely incomplete, but also Contamination with adhesive is unavoidable.The convex parts of the leftover leather and the rubber plate have different flexibility, that is, the degree of bending of the two is different, so these joints are likely to peel off. There were defects such as sand and the like entering the areas where the joints peeled off, damaging the outer leather of the ball-catching surface and significantly shortening its service life.

The method for manufacturing a ball catching tool for baseball of the present invention is to provide a plurality of through holes of any shape heated in a radial, petal shape, impeller shape, etc. mainly in the ball catching part in the outer leather part of the ball catching surface stem part. A liquid polyurethane with excellent slip resistance, flexibility, and wear resistance, or a liquid rubber-like elastic material having the same effect is injected and filled into each of these holes. A part of the elastic material etc. is bonded to the cut surface and part of the inner surface of each through hole of the leather (both have a rough surface without a silver surface), so it is possible to form a liquid without using an adhesive. When the rubber-like elastic body material is reaction-molded, the cut surfaces and inner surfaces of each through-hole in each rubber-like elastic body part and the outer leather part are integrally and strongly bonded, and not only will they not peel off. Since a liquid rubber-like elastic material is injected into each through-hole and then subjected to reaction molding, the work is simple, accurate, and can be manufactured without stains.

A method for manufacturing a baseball catching tool according to the present invention that can achieve the above-mentioned objects will be described below with reference to the drawings.

As shown in Fig. 1 (■), a flexible and thin natural leather material is cut and formed into a ball-catching surface leather a including finger parts and a chamber part, and a radial, petal-shaped or petal-shaped or A plurality of through holes 2, 2 of any shape arranged in the shape of an impeller or the like are punched out.

In this case, it is also possible to punch and cut the outer skin a of the ball-catching surface stem portion B and each of the through holes 2 at the same time.

Next, as shown in FIG. When the body material is injected and filled into each through hole 2 of the skin a, the liquid rubber-like elastic material has good permeability, and the cut surface 3 of each through hole 2 of the skin a. Since the periphery 4 on the inner surface opening side is a rough surface, the liquid rubber elastic material etc.
It permeates through the rough surfaces of the cut surface 3 and the periphery 4 on the inner surface side, and tightly joins them together.

Thereafter, the liquid rubber-like elastic material is heated at room temperature or at a temperature such as 60° C. that does not cause deformation and deterioration of the natural leather.
A rubber-like elastic body portion having high anti-slip properties, flexibility, abrasion resistance, etc., which is heated and reacted in the following, is exposed and molded on the outer surface side of the leather a.

In this case, each of the rubber-like elastic body parts, the cut-off surface 3 of each through-hole 2 of the outer leather a, and the periphery 4 on the inner surface side thereof are defined by fitting each convex part of the rubber-like plate into each through-hole. In addition, it does not require a lot of effort to fit and adhesively bond multiple protrusions and holes one by one, unlike when bonding with adhesive. There is no risk of peeling and there is no risk of peeling, and there is no risk of peeling.

Therefore, the outer leather a of the ball-catching surface stem B retains its flexibility without deteriorating due to heating, etc., and in combination with the rubber-like elastic body part 2, which is similarly flexible, it wraps around a baseball. Moreover, the anti-slip property of the rubber-like elastic body prevents the ball from falling, making it possible to catch the ball perfectly.

Thereafter, a ball-catching surface stem portion B and an upper surface leather (
Baseball catching tool A can be manufactured by sewing, knitting, etc. (not indicated by reference numerals), web d, etc. by known means.

As shown in FIG. 1 (2), the ball-catching part 1 has a radial, petal-shaped, impeller-shaped, etc., mainly on the inner surface opening side of the outer skin a of the ball-catching surface stem part B of the ball-catching tool 4 according to the manufacturing method of the present invention. If the hole diameter on the outer surface A side is smaller than the hole diameter on the inner surface side in each of the through holes 2 arranged in Coupled with the fact that it is in close contact with the cut surface 3, there is no risk of it falling off to the outer surface A side, and not only can it be strongly joined, but also the ball-catching power that wraps around the baseball can be further strengthened.

Further, as shown in FIG. 3 and ■, the surface leather a of the ball catching surface part B of the ball catching tool A according to the manufacturing method of the present invention is coated with the liquid polyurethane or a liquid having the same effect from the inner surface side. When injecting and filling the rubber-like elastic body etc. into each through hole 2,
A thin piece 5 is integrally molded in close contact with the liquid rubber-like elastic material, etc., which extends to the periphery 4 on the inner surface side of each through hole 2 and is connected to the liquid rubber-like elastic material, etc. injected into each through hole 2. There is.

Therefore, it is further ensured that each rubber-like elastic body part does not fall off from each through-hole 2 etc. of the outer leather a.

Furthermore, as shown in FIG. It may be formed to be somewhat higher or lower than the outer surface A side, or it may be formed with an appropriate design on its surface.

As shown in FIG. 2, in the baseball catching tool A manufactured as described above, the flexibility of the outer leather a is not impaired during the manufacturing process, so the outer leather a of the ball catching part 1 and each rubber Not only can the shaped elastic body wrap around the ball to catch the ball,
Together with the anti-slip properties provided by each rubber-like elastic body, it is possible to completely prevent the ball from falling.

[Brief explanation of the drawings] Figures 1 and 2 are schematic plan views showing the skin of the stem of the ball-catching surface, where ■ shows the outer side and ■ shows the inner side. be. FIG. 2 is a schematic plan view of the ball catching surface leather portion of the baseball catching tool of the present invention. FIGS. 3-3 are partially enlarged schematic cross-sectional views of the side of the rubber-like elastic body of the ball-catching part of the outer leather. Reference symbols in the drawings A: Catching tool, B: Catching surface stem, a: Outer leather, b: Rubber-like elastic body, C: ... lining leather, d... Uniraf,
1...Ball catching part, 2...Through hole, 3...
...Cut surface, 4...periphery, 5...thin piece,...

Claims (1)

[Scope of Claims] 1. A method for manufacturing a ball catching tool for baseball, in which a part of a rubber-like elastic body is attached to a transparent hole provided mainly in the ball catching part of the soft and thin outer leather of the ball catching surface stem part. , a radial pattern is formed mainly on the ball catching part or part of the ball catching part and the finger part of the outer leather of the ball catching surface stem part.
A plurality of holes of any shape are drilled in the shape of petals or impellers, etc. Each hole of UD8 is filled with liquid polyurethane or R, which is rich in anti-slip properties, flexibility, and abrasion resistance. 1. A ball-catching surface stem portion which is injected with a liquid comb-like elastic material and has a cut surface of each through-hole of the outer leather and a rubber-like elastic material portion in close contact with each other. A method of manufacturing a ball catching tool. 2. Each hole in the leather of the ball-catching surface stem is formed by punching a plurality of holes from the inner surface of the leather so that the hole diameter on the outer surface of the leather is smaller than the hole diameter on the inner surface. A method for manufacturing baseball equipment according to claim 1.