JPH0249602A - Mold for forming shoe sole mainly as outer sole - Google Patents

Abstract

PURPOSE:To form the molded sections of many kinds or many colors at exact boundaries or specified positions by a method wherein a bottom mold, and intermediate mold, and a top mold are stacked up in order to be closed, and wherein first bottom material in the intermediate mold and second bottom material in the bottom mold are primarily vulcanized, and wherein the top mold with the primary moldings of the first bottom material is stacked up on the bottom mold and is secondarily vulcanized after the molds are closed. CONSTITUTION:The first bottom material (d) of a desired quantity is contained in the recessed sections 4, 4 of an intermediate mold (b), and in the same manner, the second bottom material (e) of the different kind of a desired quantity is contained in the recessed section 9 of a bottom mold (c). On the bottom mold (c), the intermediate mold (b) is heaped up, and on the intermediate bottom (b), a top mold (a) in order, to be closed, and by a temperature and pressure known widely, primary vulcanization is performed, and primary moldings d', e' are molded. In this case, when the upper mold (a) is removed from the upper section of the intermediate mold (b), then by the top mold (a), in respective recessed sections or grooves 1 at specified sections on the lower surface side of the top mold, the primary moldings d', d' are fitted. When the bottom mold (c) is closed with the top mold (a), them the primary moldings d', d' of the top mold (a) are fitted and are contained in a space in the recessed section 9 of the bottom mold (c). After that, when the respective primary moldings d', e' in the top mold (a) and the bottom mold (c) are secondarily vulcanized, then by the respective primary moldings d', e' which are not yet perfectly vulcanized, a perfect vulcanized moldings connected integrally is formed.

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a mold for a sole or an outsole of a sports shoe, in particular a sole or an outsole made of a combination of different or different colored sole materials.

<Prior art> For example, as shown in FIG.
9) does not use the middle type, but has a lid-shaped upper type (a) with a flat bottom side; Food supply fort t ← mantle multiple #) Stopping chamber ze 4° concave (from the lower mold (to) where multiple toughnesses are provided)
The mold (9) is filled with a desired amount of one or more kinds or a plurality of colors at a predetermined portion within the concave portion Cψ of its lower mold (c). Store the materials (c),
A desired amount of the second
The lower mold (c) containing the plurality of bottom materials is closed with the upper mold (a), and the plurality of bottom materials are simultaneously vulcanized by known vulcanization means. This was an attempt to manufacture an outer sole (6) equipped with a large number of anti-slip protrusions υ that were integrally molded.As shown in Figure 2 I to ■, the second mold side) Similarly, the middle mold is not used, but a lid-shaped upper mold (A) with a flat bottom surface, a spiked bottom-shaped recess that opens upward on the upper surface side, and a plurality of shallow recesses at predetermined positions in the rectangular recess. dent (goods).

(Goods) and the shallow dents (Goods) 10 Deep dents in the shape of multiple spikes in a predetermined area excluding the rumored formation site.

The first bottom material (c) of a different type or color is formed in each shallow recess in the recess c9r) of the lower mold e. Outer sole (with a plurality of spikes) containing a desired amount of the sole material △ and then integrally bonding and molding these multiple types or multiple colors of sole materials at the same time using a known vulcanization method. 9) etc.

Also, for example, 2nd M, 7! As shown in Figure 1, the third mold is made by first forming an upper mold (A) with a flat lower surface and a predetermined portion on the lower surface in order to manufacture a tall spiked sole or outer sole (6). The medium type (B) and the above-mentioned medium type (B) are provided with a plurality of protrusions for closing the plurality of shallow depressions (Goods) provided at predetermined locations within the upwardly opening concave buttock υ on the upper surface side of the lower mold Q described below. Concave part 01) opened upward
A lower mold (formed from the back) is provided between the protrusions on the lower surface side of the middle mold (B) in the recess (S1ζ), and the mold (G) Each shallow depression (
A desired amount of the first bottom material (C) is stored in B), and the lower mold &4 containing the bottom material (C) is closed by overlapping the middle mold (=) and the upper mold (A), and then The bottom material is subjected to primary vulcanization for a relatively short period of time, for example, about 20 seconds to 1 minute, to form a primary molded product 1 which has not yet been completely vulcanized but maintains a certain shape, and then the upper mold 0). and medium size (b)
is removed from the lower mold (upper part), and a desired amount of the second bottom material (6) of a different type or color is stored on top of the primary molding in the recess Q of the lower mold (→). The lower mold C containing the materials (1) was closed with the upper mold (A) and vulcanized by a known vulcanization method, and these bottom materials (C) and the next molded product were integrally molded. It's a waste of time to try to get shoe soles with spikes.

<Problems to be Solved by the Invention> In the above-mentioned conventional molds, when simultaneously vulcanizing and molding, each bottom material tends to melt and flow due to heating, and also tends to move due to pressure. As a result, the vulcanized and molded products cross the boundaries and get mixed up, resulting in defects in the appearance of the molded product after vulcanization and loss of commercial value.

Similarly, in the conventional mold No. 2 mentioned above, since the second bottom material is overwhelmingly large, it is possible to use a relatively small amount of 7' types, multiple types, or multiple colors depending on the second bottom material. As the initial bottom material is forced out from within each shallow depression,
There was a defect in that the initial bottom material was molded into a predetermined shape at a predetermined position, and a molded product could not be obtained, resulting in a defective product with no commercial value.

Furthermore, the third conventional mold mentioned above is
The primary moldings of the second bottom material in which the primary moldings of the first bottom material of 1 m or multiple types or colors in each recess at a predetermined position in the recess of the lower mold are overwhelmingly large during secondary vulcanization. At least a part of it is extruded from within each of the shallow holes, and after secondary vulcanization, it forms part of the base of the secondary carving of the second bottom material and part of the periphery of each spike part. Similarly, there were defects that significantly damaged the appearance and diminished the value of the product, but the purpose of this project is to overcome these defects and improve productivity.

Means for Solving Problems> The present invention, as a means for achieving the above-mentioned object, comprises an upper mold, a middle mold, and a lower mold, and the upper mold opens downward at a predetermined portion on the lower surface side thereof, and the opening edge form a number of recesses or grooves smaller than the bottom surface, and the middle mold has a predetermined portion on its upper surface side; A concave portion opened upward is formed at a predetermined portion on the upper surface side to store different types of bottom materials, and these lower molds, middle molds, and upper molds are sequentially stacked and closed, and the first bottom material in the middle mold and Primary vulcanization is applied to the second bottom material in the lower mold,
A mold mainly for the outer sole, characterized in that the upper mold with the primary molding of the first sole material is overlapped with the lower mold, closed, and then secondary vulcanization can be performed, and The medium mold has a downwardly protruding protrusion capable of diagonally cutting the effective material and the removal material of different types of bottom materials at a predetermined position on its lower surface, or the medium mold has a projection on its lower surface;
A plurality of protuberances are formed at predetermined portions of the lower mold to close recesses for accommodating bottom materials of different types or different colors, and similarly, the lower mold excludes recesses for accommodating predetermined bottom materials of different types on its upper surface side. A plurality of upward concavities in the shape of spikes are formed at predetermined locations.

<Operations and Effects> The mold for the sole of the present invention, mainly the outer sole, is composed of an upper mold, a middle mold, and a lower mold. When performing the primary vulcanization of the second bottom material, a plurality of recesses or grooves each having an opening edge smaller than the bottom surface are provided in advance at a predetermined location on the lower surface side of the upper mold. Sometimes a portion of the bottom material is filled and molded. Therefore, when the upper mold is removed from the middle mold after the first vulcanization, not only does it not take any effort to remove the mold from the middle mold, but it is also possible to remove the mold from the middle mold simply by closing the lower mold with the upper mold. It is possible to smoothly transition to secondary vulcanization without requiring a means for placing the above-mentioned secondary molded product on top of the primary molded product of other bottom material in the recess of the lower mold, and productivity is significantly improved. did it.

In addition, the mold of the present invention is such that the middle mold and the upper mold are sequentially stacked on the lower mold, and a second bottom material of a different kind is used between the upper mold and the middle mold. The dissimilar second bottom material or the first bottom material is subjected to primary vulcanization in a lower mold in a relatively short period of time, for example to the extent that the bottom material is not fully vulcanized but merely maintains the desired formation; After vulcanization, the primary molded product adhering to the lower surface of the upper mold is fitted and housed so as to be in close contact with the primary molded product in the lower mold, after removing the excess bottom material in the lower mold. It is to be paid. (Usually, the desired amount is the total amount equivalent to the volume of the predetermined dent or recess, plus some extra amount, so the extra amount of bottom material may become one of the defects that are mixed in at the boundary between multiple bottom materials.) ) Therefore, it was possible to provide shoe soles, mainly outer soles, with high commercial value that could be molded in multiple types and in multiple shapes.

<Example> An example of a shoe sole according to the present invention, mainly a molding mold for the outer sole, will be described below with reference to the drawings. First, as shown in FIG. 3, the mold holder of this example is
The medium-sized can, which is composed of an upper mold (1), a middle-sized can) and a lower mold (a), is coated with the first bottom material (
A plurality of recesses (4) are provided for storing the spacer (4), and each day (4) has an extra gkk? - A recess (6) is provided to accommodate the corresponding protruding surplus portion (f), and a groove is formed on the lower surface side of the recess (6).

ΔNext, the method of using the molding die, ie, the method of manufacturing the desired outer sole ω), is shown in Figure 4 as follows. First, as shown in Figure 4, pour the desired amount of the first bottom material (d) into the recesses (4), (4) of the medium-sized box.
Similarly, a desired amount of the second bottom material (e) of a different type is stored in the recess (9) of the lower mold (c).

Next, as shown in Figure 4 (■), place the middle mold (
b) The upper mold (C) is sequentially stacked on the inner sole (b) and closed, and primary vulcanization is performed at a known temperature and pressure for a relatively short period of time (e.g., 20 seconds to 1 minute) to form each of the aforementioned bottoms. Materials (d) and (e) have formed a predetermined shape or have not yet been completely vulcanized, and a primary molded product (C5) is being formed. ) When removed from above, the upper mold (a) becomes as shown in Figure 4 (■).
A part of the primary molding (d5) is fitted inside the secondary molding (d5. (d5 material (d) is not present, and the protrusion (5 ) on the outside of the recess (6), (
6) Insert the protruding portion of the first bottom material (e) into the
f), the primary molding of the ζ-filtered material remains
The necessary molded part and the surplus molded part (5)'v)k are partitioned by projections (γ) projecting downward from a predetermined portion on the lower surface side of the middle mold (b).

Then, by removing unnecessary surplus moldings (b), a space is formed in which the primary molding of the first bottom material (d5) can be stored in a predetermined part of the lower mold. , when the lower mold (e) is closed with the upper mold (a), the next molded product (
=, (C5 is fitted and stored in the space in the recess (9) of the lower mold (C). Next, each next molded product (d5 (When C5 is subjected to secondary vulcanization using a known vulcanization method, for example, at a temperature of about 3 to 170° and a vapor pressure of about 150 JPY for about 6 minutes, each subsequent molding that has not yet been completely vulcanized (d5.) A complete vulcanized product in which C5 is integrally bonded is molded. Then, when the upper mold (a) is removed from the lower mold (@), the upper m (@) is removed from its lower surface. The molded article remains attached to the side.

Then, the molded product may be removed from the upper mold (,). A recess or groove (1) provided at a predetermined portion on the lower surface side of the upper mold (a) at a predetermined portion on the upper surface side of the molded product;
(1) Since protrusions aa and an of equivalent shape are formed, these are unnecessary as the outer sole, etc., and are removed by splitting or other known means (\). It is possible to provide an outer sole or sole suitable for sports shoes such as those for table tennis, etc., which have relatively small anti-slip protrusions on the ground surface.

Specific Embodiments> The mold for the outer sole as the shoe sole according to the present invention is the third embodiment described above.
In addition to the embodiments shown in FIGS. 5 to 4, the embodiments shown in FIGS.
Another example of molding die (3) shown in the figure can be mentioned. That is, as shown in FIG. 5, the mold (4) of this embodiment has a groove bottom formed by an upper mold (5), a middle mold (B5), and a lower mold (C5).

The upper mold (a) has a plurality of depressions or grooves (b) that open downward at a predetermined portion on the lower surface side, and each of the depressions or grooves (b) has an opening edge (2) thereof. It is formed smaller than the bottom surface.

Next, the medium-sized can has a recess Q in the shape of a shoe sole with spikes, which has a plurality of recesses in the shape of a spiked shoe sole at a predetermined portion of the bottom of the medium-sized can, in order to store the initial sole material.
→ and a predetermined portion on the lower surface thereof; a plurality of protruding portions (b) for pressurizing the bottom material of a different kind or color housed in the lower mold (c); A recess (b) is provided around each of the parts (b). ◇The lower mold (c5) is provided with a recess (c5) at a predetermined portion of the bottom to accommodate a different type of second bottom material (e) on its upper surface side. A shoe sole-shaped recess with spikes (forming an L barrel) has a plurality of micro-deflections α1.01 and a plurality of recesses in the shape of spikes at predetermined portions where the recesses H are not provided.

Next, a method of manufacturing a desired shoe sole or outsole (9) using the above-mentioned molded shoe last is shown in FIGS. 6I to 6M as follows. Figure 6 first! As shown in Figure 1, a desired amount of the first bottom material (d) is stored in the recess H of the medium mold (b5), and the same (desired amount of the second bottom material (e) of a different type is placed).
e) is housed in each recess (11) at a predetermined portion of the bottom of the lower die (C).

Next, as shown in Figure 6 ■, these lower molds (middle molds (c5)
b5, the upper mold (c5) is stacked one after another on the middle mold (roller) and closed, and primary vulcanization is performed at a known temperature and pressure for a relatively short period of time, for example, about 20 seconds to 1 minute, and each of the bottom materials (d)
and (c) are molded primary moldings (d5 and (e5) that can hold the desired shape but are not yet completely vulcanized.Therefore, the upper mold (5 is the middle mold) is removed from above. As shown in Fig. 6 (■), the upper mold (a) has a recess or groove αη in a predetermined part on its lower surface side, and (b) a primary molded material of the first bottom material (d5). In addition, when the middle mold (b5 is the lower mcc') is removed from the middle mold (b5 is the lower mcc'), each part of the middle mold (b5 is attached to a predetermined part on the lower surface side) The lower mold (
Each subsequent molded product of the second bottom material of a different type in c5 (the surplus molded part (f) of e5 is pushed in. Therefore, it is only necessary to remove the surplus molded part (f). (6)
There is no primary molded product (d5) in the recess α→.

Furthermore, a primary molded product (e) of a different type of second bottom material is stored in each recess H at a predetermined position in the recess (I8) on the upper surface side of the lower mold (c5).Next, The upper mold (a
When the lower mold (c5) is closed at step 5, the - of the upper mold (1) is closed.
The next molded product (d5 is housed in each recess (11) of the lower mold (c5). Thereafter, a known heating means such as a temperature of about 1500
When secondary vulcanization is performed for about 4 to 7 minutes at -170'' and a steam pressure of about 150, several secondary molded products (d5 and e5 are inseparable from The combined molded product is molded.Then, the upper mold (1) is removed from the lower mold (c5), and the upper mold (a5) is removed with the molded product still attached to its lower surface. The molded product may be removed from the upper mold (a5) and removed from the upper mold (-).

In addition, protrusions ao and aa having shapes corresponding to the nine recesses or grooves CLη and (b) are formed on the lower surface of the upper mold (,5) at predetermined portions on the upper surface of the molded product. Due to the air pocket at the lower end corresponding to the spike, it is possible to overcome the defect that is said to make it difficult to form a complete molded product that is full to the lower end of the spike. Relatively tall spikes that look like □□□
The effect is especially remarkable for the 5th go of @. ) is particularly desirable.

The soles (6) with spikes shown in FIG. (If the recess #4 in the shape corresponding to each spike in the recess α on the lower surface side of c5 is made somewhat larger in volume, it will be suitable for conventional simultaneous vulcanization or -second vulcanization odor shoes. can.

[Brief explanation of the drawing]

FIGS. 1 and 2 are schematic longitudinal cross-sectional views of conventional shoe sole molds. FIG. 3 is a schematic vertical cross-sectional view of a mold mainly for the outer sole according to an embodiment of the present invention. FIG. 4: Usage states I to M are examples of longitudinal cross-sectional diagrams showing usage states of the mold of the present invention.0 FIG. This is a schematic diagram. FIGS. 6-6 are schematic vertical cross-sectional views illustrating the usage of a mold for a shoe sole or an outsole according to another embodiment of the present invention. FIGS. 7 - 7 are schematic diagrams showing an outer sole mainly manufactured using a mold for the outer sole according to an embodiment of the present invention, where ■ is a plan view showing the upper surface side thereof, and ■ is a side view thereof. Deashi, ■
is a cross-sectional view of ■. FIGS. 8I to 8 are schematic diagrams showing another embodiment of a shoe sole or an outsole manufactured using a shoe sole or outsole mold according to another embodiment of the present invention, and . , ■ shows a side view thereof, and ■ shows a cross-sectional view of I. (Drawing code) (4), (A5--Mold, ■), @-
...Sole or outer sole, (a), (-5
・・・・・・・・・Upper mold, Cage L (b5・・・・・・・
...Medium size, (c), (C5...Lower type,
(1), Φ)... Concavity or groove, (2
), 4......opening edge, (3'l, Q3)
......Bottom, (4) # (8L (10)
I C15)p (one, (a),...
Concavity, (→〒-force (6), α... recess, (a)...protrusion, (9),
(1→, 0 barrel・・・・・・・・・Concavity, (1G)・・・
・・・・・・・・・・・・・・・・・・Protuberance. That's all■ Early 2 figures 1 time V Bud 2 figures■ 4th day) et al■ l 6! ■ ■ Humiliation 6 illustrations

Claims (1)

[Scope of Claims] 1. Consisting of an upper mold, a middle mold, and a lower mold, the upper mold has a downward opening at a predetermined portion on its lower surface side, and the opening edge forms a plurality of recesses or grooves smaller than the bottom surface, and the middle mold Forms a concavity or recess that opens upward in order to store the first bottom material at a predetermined portion on the upper surface side of the lower mold, and similarly, the lower mold is used to store a different type of second bottom material at a predetermined portion on the upper surface side of the lower mold. A concave portion opened upward is formed, the lower mold, the middle mold and the upper mold are sequentially stacked and closed, and the first bottom material in the middle mold and the second bottom material in the lower mold are subjected to primary vulcanization. 1. A mold mainly for an outer sole, characterized in that the upper mold with the primary molded material of the sole material is overlapped with the lower mold, closed, and then secondary vulcanization can be performed. 2. The middle mold is characterized in that a protrusion protruding downward can be formed at a predetermined portion on the lower surface side of the middle mold to partition the useful material and the removed material in the second bottom material of a different type in the recess of the lower mold. A mold for forming the shoe sole according to item 1, mainly for the outer sole. 3. The medium mold has a plurality of spike-like recesses formed at a predetermined portion within the recess on the upper surface thereof, and a plurality of protruding portions that close the recesses of the lower mold are formed at predetermined portions on the lower surface thereof. A mold for forming a shoe sole, mainly an outer sole, according to claim 1. 4. The sole according to claim 3, wherein the lower mold has a plurality of spike-like recesses formed in a predetermined portion of the upper surface side of the recess, excluding the recess forming portion. Bottom mold.