JP2913442B2 - Manufacturing method for shoe soles with spikes - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a spike using an injection molding mold for molding a shoe sole in which a part of a non-slip device such as a spike suitable for athletics, golf or baseball is embedded and fixed. The present invention relates to an improvement in a method of manufacturing a shoe sole with a film e, which is colored or colored on the installation surface side, and is closely joined to the film e.

[0002]

2. Description of the Related Art Hitherto, proposals have been made to enhance the commercial value of shoes by coloring or coloring the contact surface of the shoe sole. For example, there have been proposals to produce a colored shoe sole molded product by printing on the ground surface of the shoe sole by printing or other printing means, or by injecting a sole material mixed with a pigment or metal powder in advance.

However, the former method of printing on the contact surface side has a defect that the printing is easily abraded and disappeared, and the contact device having an uneven contact surface or a non-slip device such as a spike has a defect that printing is difficult. The means for injecting a bottom material in which a pigment or a metal powder is previously mixed, as in the latter case, has a defect that an oxidation state called a weld line is caused, blackening is caused, and the commercial value is significantly reduced.

[0004]

To overcome the above-mentioned deficiencies of the means for coloring or coloring the contact surface side of the shoe sole and to form a coloring or coloring on the contact surface which is not easily worn out. An object of the present invention is to easily provide a shoe sole with a spike.

[0005]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, according to the present invention, in a sole-shaped cavity of the molding die A, a convex portion of the inner surface 1 of the convex die a corresponding to the nut is formed. The bases 16 of the fixed spikes D are provided in the portions 2, 2,... At the portions corresponding to the tips 15 of the fixed spikes D in the recesses 3 of the concave mold b. The buffer members 9 made of a thermoplastic synthetic resin that does not adhere to the bottom material f described later are inserted into 4, 4... And the fixed spikes D of the respective fixed type spikes D are recessed at the distal end portions 8 of the respective buffer members 9. The distal end portion 15 of each fixed spike D that supports the distal end portion 15 and is previously supported by the distal end portion 8 of the cushioning member 9.
In addition, coloring or coloring is applied to the grounding surface side of the main body 12 of a thermoplastic synthetic resin having good elasticity and good adhesion to the bottom material f, and concave portions 11, 11.
.. is to insert and support each through hole 10, 10... Of the film e having a, and then inject the sole material f onto the film e in the sole-shaped cavity. Things.

[0006]

The tip 15 of each fixed spike D or the spike c with each nut d fixed at a predetermined position in a shoe-shaped cavity formed by the convex mold a and the concave mold b of the mold A.
Further, each through-hole 10 through which the distal end portion 8 of the buffer member 9 is inserted into the male screw hole of each nut d, and the rib 17 of the convex piece a provided on the outer periphery and the fitting recess of the concave mold b The grooves 18 support the thermoplastic synthetic resin film e, which has extremely good elasticity and is colored or colored, uniformly.
Further, the film e is tightly bonded to the bottom material f while being pressed against the bottom surface of the concave portion 3 of the concave mold b by the injection pressure of the injected bottom material f. The film e is extremely extensible and has good adhesion to the bottom material f and is formed of a polyurethane resin or the like having good abrasion resistance, and is colored or colored by a paint different from ink. ing.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A method for manufacturing a shoe sole B with spikes according to the present invention will be described below with reference to the drawings. The method for manufacturing a shoe sole with spikes according to the present invention relates to an improvement of a so-called vertical or horizontal injection molding die as shown in FIGS. That is, as shown in FIG. 4, FIG. 5, FIG. 7, FIG. 8, etc., the molding die A is composed of a convex die a and a concave die b, and the inner surface 1 of the convex die a and the concave part 3 of the concave die b. Form a desired shoe sole-shaped cavity. The convex shape a is provided with the same number of the convex portions 2, 2,... As the fixed type spikes D at portions corresponding to the base portions 16 of the fixed type spikes D to be fixed on the inner surface 1 thereof. b each of the convex portions 2 in the concave portion 3 of FIG.
Are formed at corresponding portions. Further, each through hole or impervious hole 4 of the concave mold b
Are fitted with buffer members 9 each having a recess 14. Each through-hole or impervious hole 4 fitted with the buffer member 9
Have channels 7, 7,... Communicating therewith, each of which inserts an ejector 6, 6,... Which presses the buffer member 9 and is connected to the holding plate g. Each of the cushioning members 9 is made of a different or different thermoplastic synthetic resin material having poor adhesion to a bottom material f described later as shown in FIG. Is desirable. Next, (a) and (b) of FIG.
The fixed type spike D composed of the tip portion 15 and the base portion 16 is mainly used for athletic athletic shoes, and the one shown in FIG. It is used for trucks on the ground and the like, and the one shown in FIG. 12 (b) is mainly used for trucks of paving materials for all weather. Further, as shown in FIGS. 9 and 10, a thermoplastic synthetic resin film e having one surface colored or colored is provided with a large number of concave arc-shaped notches 11, 11,. The through holes 10, 10
・ ・Similarly, the main body 12 of the thermoplastic synthetic resin of the film e is a thermoplastic synthetic resin of the same type or the same quality as the bottom material f described later, and has extremely good elasticity. For example, an extension of about 7 to 8 times the entire length is possible. Further, the coating layer 13 which is formed on one surface of the main body 12 and which is printed or colored by applying a desired color or coloring, is expressed by a paint for applying an appropriate color or coloring. After the metal powder is mixed or previously adhered to the main metal powder main body 12, the coating material is applied to the main metal powder main body 12. The bottom member f is a nylon (trade name) or a polyurethane resin, which is a kind of aliphatic polyamide resin. Next, as shown in FIG. 7, FIG. 8 and FIG. 13, etc., in forming the sole-shaped cavity with the convex mold a and the concave mold b of the molding die A, Each tip 15 of the fixed type spike D is inserted into each through hole 1
0, the leading end 15 of each fixed spike D is recessed in each through hole in the recess 3 of the recessed mold b or each buffer member 9 in the impervious hole 4 with the film e inserted therein. 14
And the film e has its outer peripheral edge arriving at the fitting groove 18 along the outer circumference of the concave mold b.
When the concave shape b is sealed with the convex shape a to form the shoe sole-shaped cavity between the two types a and b, the film e is formed along the tip 18 of each fixed spike D and the periphery of the convex shape a. Ribs 17 and fitting grooves 18 corresponding to the ribs 17
Then, a required amount of the bottom material f is injected onto the film e, and the injection pressure of the bottom material f causes the film e to expand and be pressed onto the concave portion 3 of the concave mold b. As a result, the molded product of the bottom material f and the film e closely contact and are integrally joined.

[0008] Accordingly, the convex mold a of the molding die A is removed from the concave mold b, and the tip 15 of each fixed spike D is exposed from the grounding surface side as shown in FIG. The bottom B can be manufactured. The sole B with spikes is a hard plate with spikes attached to the front step part of athletic sports shoes.

[0009]

Another embodiment of the present invention is a method for manufacturing a shoe sole with spikes,
In addition to the basic embodiments shown in FIGS. 4, 5, 7, 8, 9, and 11, (a), FIGS. 13 and 14, and the like, FIG. (C), the spike c of each spike c is inserted into each through-hole 10 of the film e in the sole-shaped cavity formed by the convex mold a and the concave mold b. And the outer periphery of the film e is sandwiched between the ribs 17 of the convex shape a and the fitting grooves 18 of the concave shape b, and a required amount of the bottom material f is injected onto the film e, e and the molded material of the bottom material f are closely adhered and integrally joined, so that a sole B with spikes of a golf athletic shoe can be mainly manufactured.

Further, in addition to the basic embodiment and the embodiment using the nut d with each spike c, FIGS.
As shown in FIG. 11 (b), FIG. 12 (c) and FIG. 15, etc., each fixed spike D and each spike c nut d
Instead, nuts d as shown in FIG. 12D are used, and buffer members 9 also shown in FIG. 11A are used.
The tip 8 of the cushioning member 9 forms a recess and / or a cut 14, and most of the main part of each cushioning member 9 has a through hole or a through hole provided at a predetermined portion of the recess 3 of the concave mold b. It is fitted in the impermeable hole 4. In the shoe-shaped cavity, each of the nuts d is sandwiched between each of the convex portions 2 of the convex shape a and each of the cushioning members 9, and the distal end portion 8 of each of the cushioning members 9 is in the female screw hole of each of the nuts. Supported by insertion. At this time, the distal end portion 8 of each of the buffer members 9 is inserted in advance into each of the through holes 10 of the film e, and the outer periphery of the film e is formed by the convex concave rib 17 and the concave concave groove b. Narrow pressure is supported at 18. Accordingly, thereafter, a required amount of the bottom material f is injected onto the film e, and the film e is pressed against the concave portion 3 of the concave mold b by the blast pressure of the bottom material f, so that a molded product of the bottom material f is formed. And tightly bonded together. After this, the convex mold a is removed from the concave mold b,
Each nut d is embedded and fixed in a predetermined portion, and a shoe sole having a colored or colored film e coupled to the grounding surface side is modeled, and each spike c is screwed into each nut d of the shoe sole,
The spike sole B can be manufactured. The spiked sole B is suitable mainly for golf athletic shoes.

As shown in FIG. 9 or FIG. 10, the film e is provided with a large number of concave arc-shaped notches 11 along the outer peripheral edge thereof and has excellent extensibility. The injection pressure of the bottom material f is used to make close contact with the concave portion of the concave mold b. The colored or colored layer formed on the grounding surface side of the film e is a coating layer 13 as shown in FIGS.
Alternatively, a metal powder such as brass or stainless steel may be applied to the main body 12 before applying the paint on the grounding surface side of the main body.

The cushioning member 9 shown in FIG. 11 has a concave shape in a shoe sole-shaped cavity formed by the convex shape a and the concave shape a before injection of the sole material f as shown in FIGS. 3 to 5 and FIG. 6B, it is somewhat exposed from the hole edge 5 of each through-hole or non-through-hole 4 provided at a predetermined portion of the concave surface 3 of FIG. The film 3 is pressed together with the film e by the concave portion 3 of the concave shape b, and the cushioning member 9 is pushed down to the same plane as the bottom surface of the concave portion 3 regardless of the embodiment. When the bottom material f is nylon 6 (trade name) belonging to a polyurethane resin or an aliphatic polyamide resin, the cushioning member 9 is a foam or solid body of nylon 11 (trade name) belonging to an aliphatic polyamide resin. If they are, they have poor adhesion to each other.
Similarly, since the film e preferably has good adhesion to the bottom material f, a film of nylon 6 (trade name) belonging to the same material as the front bottom material f or the same kind of polyurethane resin or aliphatic polyamide resin is used. Anything can be used.

[0013]

According to the method for manufacturing a shoe sole with spikes according to the present invention, a polyurethane which has been previously colored or colored with a paint or the like different from ink and which is the same or similar to the sole material f and has good abrasion resistance is used. Since it is formed of a resin or the like, the color and pattern are not easily worn. The film e
Since a metal powder such as brass or stainless steel is applied before the paint is applied, a molded product of the bottom material, such as a case where a bottom material f to be injected is mixed in advance, is a so-called weld line, a black stained oxidation. It can be expressed in a gold or metallic tone without a state, and can enhance the commercial value. Since the film e is supported by the front end portion 15 of each fixed spike D, the rib 17 of the convex shape a and the fitting groove 18 of the concave shape b, the film e is formed without moving and deforming at a predetermined position. It does not impair the appearance of the object.
Further, when the film e is pressed against the bottom surface of the concave portion 3 of the concave portion b by the bottom material f injected upward, the film e has a very good extensibility and is well stretched, and has good adhesion to the bottom material. It does not easily peel off from the bottom material f but is tightly bonded integrally. At this time, since the film e has a large number of concave arc-shaped notches 11 on the outer periphery thereof, it can be formed uniformly without wrinkles. Therefore, it is possible to provide a shoe sole B with spikes having extremely high commercial value.

[Brief description of the drawings]

FIG. 1 is a schematic front view of a vertical mold according to the present invention.

FIG. 2 is also a schematic front view of a horizontal type.

FIG. 3 is a partially enlarged cross-sectional schematic view of a mold including a part of a shoe-shaped cavity formed by a convex mold and a concave mold of a mold before injection of a sole material according to another embodiment.

FIG. 4 is a partially enlarged sectional schematic view of a forming mold including a part of a shoe sole-shaped cavity formed by a convex mold and a concave mold of a mold before injection of a bottom material according to the basic embodiment.

FIG. 5 is a partially enlarged cross-sectional schematic view of a molding die including a part of a shoe sole-shaped cavity formed by a convex mold and a concave mold before injection of a bottom material according to another example of the basic embodiment. It is.

FIG. 6 is a partially enlarged cross-sectional schematic view of a mold including a part of a cavity formed by a convex mold and a concave mold of a mold after injection of a bottom material according to another embodiment.

FIG. 7 is a partially enlarged cross-sectional schematic view of a forming die including a part of a cavity formed by a convex and a concave of the forming die after injection of a bottom material according to the basic embodiment.

FIG. 8 is a partially enlarged cross-sectional schematic view of a forming mold including a part of a cavity formed by a convex mold and a concave mold after injection of a bottom material according to another example of the basic embodiment.

FIG. 9 is a schematic plan view of a colored or colored thermoplastic synthetic resin film used in the present invention.

FIG. 10 is a schematic cross-sectional view taken along the line XX of FIG. 9;

FIG. 11 (a) is a partially cutaway side schematic view of a cushioning member used in a basic embodiment of the present invention. (B) Similarly, it is an illustration of a partially cutaway side schematic view of a cushioning member used in another embodiment of the present invention.

FIGS. 12 (a) and (b) are side cutaway schematic views of a fixed spike used in a basic embodiment of the present invention. (C) Similarly, it is the partially cutaway side schematic drawing of the spike used for another example of the basic embodiment of this invention. (D) Similarly,
It is a partially cutaway side schematic view of a nut used for another example of another embodiment of the present invention.

FIG. 13 is also a partially enlarged cross-sectional schematic view showing the relationship between the convex and concave molds and the fixed spikes and the colored or colored thermoplastic synthetic resin film according to the basic embodiment of the present invention. is there.

FIG. 14 is a schematic plan view of a shoe sole with spikes manufactured by the manufacturing method of the present invention.

FIG. 15 is a schematic longitudinal sectional view taken along the line YY of FIG. 14;

[Explanation of symbols]

 Reference Signs List A Molding mold B Shoe sole with spike D Fixed spike a Convex b Concave c Spike d Nut e Thermoplastic synthetic resin film f Bottom material 1 Convex inner surface 2 Convex convex 3 Concave concave 4 Concave concave 4 Hole or impermeable hole 5 Recessed hole edge 6 Ejector 7 Channel 8 Tip of buffer member 9 Buffer member 10 Through hole of thermoplastic synthetic resin film 11 Missing portion of outer peripheral edge of thermoplastic synthetic resin film 12 Main body of thermoplastic synthetic resin film 13 Coating layer of thermoplastic synthetic resin film 14 Through hole 15 Tip 16 Base 17 Convex rib 18 Recessed fitting groove

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁶ identification code FI // B29L 31:50 (58) Investigated field (Int.Cl. ⁶ , DB name) A43B 1/00-23/30

Claims (4)

(57) [Claims] 1. A spike or spiked nut or nut with a convex or concave mold and a nut or nut with the convex or concave mold formed therein, and a desired bottom material is fixed in a shoe-shaped cavity formed by a convex mold and a concave mold of a vertical mold or a horizontal mold. To produce a spike sole with spikes, a film e with good extensibility, good adhesion and bonding with the sole material f described later, and colored or colored on the ground surface side
, And the fixed spikes D are formed by the projections 2, 2,... Of the inner surface 1 of the projection a corresponding to the base 16 of the fixed spikes D in the shoe-shaped cavity of the mold A. The base material 16 is provided in a through hole or a non-through hole 4, 4,... Which is also provided at a position corresponding to the tip portion 15 of each of the fixed spikes D in the concave portion 3 of the concave mold b.
A mold A for inserting a buffer member 9 made of a thermoplastic synthetic resin that does not adhere to the mold and supporting the distal end portion 15 of each fixed spike D with a concave portion 31 of the distal end portion 8 of each buffer member 9 and a thermoplastic resin. A bottom material f is prepared, and each fixed spike D previously supported by the tip 8 of each buffer member 9 of the molding die A is prepared.
Are connected to the through-holes 10, 10... Of the film e.
To support the film e, and
The film is uniformly supported by the fitting groove 18 on the outer periphery of the cavity and the rib 17 of the concave b corresponding to the fitting groove 18, and then the bottom material f is placed on the film e of the shoe-shaped cavity. And a method for producing a shoe sole with spikes in which the film e is tightly bonded to the bottom side of the molded product of the sole material f. 2. The mold A is provided with nuts d with spikes in place of the fixed spikes D in the sole-shaped cavity formed by the convex molds a and the concave molds b. The spikes c of the nuts d with spikes c are fitted and supported by the spikes c in the through holes 31 of the tip end portions 8 of the buffer members 9 fitted in the respective through holes or the impervious holes 4 of the recess 3. 2. The method for manufacturing a spike sole with spikes according to claim 1, wherein said colored or colored film e is inserted and supported. 3. The molding die A prepares only each nut d in place of each fixed spike D or each spike c nut d in a sole-shaped cavity formed by the convex mold a and the concave mold b. The tip end 8 of each buffer member 9 fitted in each through hole or non-through hole 4 of the concave portion 3 of the concave mold b is fitted and supported in the female screw hole of each nut d.
The method for producing a shoe sole with spikes according to claim 1 or 2, wherein the colored or colored film (e) is inserted and supported by the tip part (8) of the shoe. 4. The colored or colored film e
Is that a metal powder is brought into close contact with one surface of a main body 12 of a thermoplastic synthetic resin film e having good extensibility, then a paint is adhered to the upper surface, and a large number of concave arc-shaped notches 11 are formed on the outer peripheral edge thereof. The method for producing a shoe sole with spikes according to any one of claims 1 to 3, characterized in that: