TWM545036U - Mold for integral forming shoe material - Google Patents

Description

Mold for shoe forming and manufacturing

The present invention relates to a mold, in particular to a mold for integrally forming a shoe material, and is suitable for production as a shoe bottom.

Shoes are no longer just to protect the soles of the feet, but also to develop a variety of shoes for wearing and occasions, to provide consumers with a choice of clothing, creating a huge commercial vitality. During the walk, the shoe absorbs part of the reaction force of the ground due to gravity, and the reaction force is reduced to directly transmit the lower limbs of the human body. In this regard, various manufacturers have developed a variety of buffer feedback force types, such as the use of material foaming, hollow airbags and the like in the position between the sole or the sole and the upper.

The soles made by foaming are as Taiwanese patents M513603, M467338, M403227, and I519401. The first three new patents are made by foaming EVA (ethylene vinyl acetate) resin, and the resin is placed in a mold for heating and pressure foaming. The invention patent is similarly foamed in a mold using TPU (Thermoplastic polyurethane).

The above invention patent adopts the technology of TPU foaming. Although it has good resilience and extremely low compression and permanent deformation, the foamed sole needs to be additionally glued, and then rubber or EVA with wear-resistant and anti-slip function is attached. Shoe accessories made of materials, To be a complete sole. In addition to increasing the processing time, the sole needs to be glued, and the bonding strength needs to consider environmental factors, so the bonding strength is tested.

In addition, in the past, when the TPU foamed, the mold was made upright foaming, and it was able to be manufactured in a vertical and large area to meet the demands of mass production in today's industry. Therefore, in the past, there was no TPU foaming mold in the horizontal process.

The mold for integrally forming the shoe material, in particular, can be combined with the shoe accessory when foaming in the mold, so that it can be integrated into one body, and the combination of the shoe soles can be avoided. .

A mold for integrally forming a shoe material, comprising an upper mold and a lower mold, wherein the upper and lower molds form a cavity on opposite sides when the mold is closed, and the bottom surface of the mold hole is provided with a positioning point to provide a horizontal arrangement of the shoe accessories, The cavity provides foaming after the foamed particles are filled, so that the foamed particles are integrated with the shoe accessories, and the foamed particles are located on one side surface of the shoe fitting.

1‧‧‧Shoe accessories

10‧‧‧Shoe accessories

2‧‧‧Mold

21‧‧‧ cavity

22‧‧‧Location points

23‧‧‧Down

24‧‧‧上模

3‧‧‧expanded particles

30‧‧‧Foamed particle layer

31‧‧‧ gel particles

The first figure is a flow chart of the use of the mold for integrally forming the shoe material.

The second picture shows the schematic of the shoe fitting in the mold.

The third and fourth figures are schematic diagrams of the mold filled with particles.

The fifth figure is a schematic diagram of the vacuum drawing of the mold.

The sixth figure is a schematic diagram of the vacuum heating of the mold vapor.

The seventh figure is a schematic view of the finished product of the shoe material.

The eighth figure is a flow chart of another embodiment of the present creation.

The ninth drawing is a schematic view of the first clamping in another embodiment of the present creation.

The tenth figure is a schematic diagram of stacking two shoe accessories on each other in another embodiment of the present creation.

The eleventh figure is a schematic view of an embodiment in which a gel particle and a foamed particle are mixed to form a foamed particle layer.

The mold for integrally forming the shoe material comprises the upper mold 24 and the lower mold 23, and the upper and lower molds 24, 23 are formed on the opposite sides thereof to form the cavity 21, and the bottom surface of the cavity 21 is provided. The positioning point 22 provides the shoe fitting 1 to be horizontally placed, and the cavity 21 provides the foamed particles 3 to be foamed after being filled, so that the foamed particles 3 are integrated with the shoe fitting 1 and the foamed particles 3 are located on the side surface of the shoe fitting 1 . The upper mold 24 includes a feed hole, a vapor passage, a cooling passage, and a discharge passage, and the lower mold 23 includes a vapor passage, a cooling passage, and a discharge passage.

Referring to the first figure, the figure shows the use method of the mold for integrally forming the shoe material, which comprises the following steps: inserting the shoe fitting, filling the mold with the mold, vacuuming the mold, heating the mold, and heating the mold. Cool and remove the shoe material.

Please refer to the second to seventh figures of the drawing for the detailed production process of this creation. Inserting the shoe fitting, the shoe fitting 1 is placed in the cavity 21 of the mold 2, and the cavity 21 is provided with an positioning point 22 for fixing the horizontal position of the shoe fitting 1; the shoe fitting 1 is a single material and can be RB (rubber) The positioning point 22 is a concave groove on the surface of the cavity 21 of the lower mold, and the concave groove is located at a position corresponding to any one of the front end, the rear end or the intermediate position of the cavity 21, or both, and the aforementioned mold 2's cavity 21 is based on the outsole shape of the shoe. For example, it can also be arranged for a single cavity 21 (used for molding a single insole) or a double cavity (for use with a pair of insoles).

The mold is filled with particles, and the cavity 21 of the mold 2 is filled with the expanded particles 3, and the partially expanded particles 3 are stacked on the surface of the shoe assembly 1, as shown in the third and fourth figures; EPOP (non-crosslinked TPU expanded beads), and the expanded particles 3 are selected to be substantially uniform in particle size and filled in the cavity 21 of the mold 2, and this embodiment is filled with a single type of expanded particles 3. The cavity 21 is taken as an example.

The mold is evacuated, and the gas in the cavity 21 is extracted so that the cavity 21 of the mold 2 is in a vacuum state; the excess gas in the cavity 21 is extracted, so that the cavity 21 is formed in addition to the shoe assembly 1 and the foamed particles 3 described above. Vacuum state, as shown in the fifth figure.

The mold steam is heated, and high temperature steam is poured into the cavity 21, so that the expanded particles 3 are swelled and joined to each other and filled in the cavity 21, and the surface of the shoe assembly 1 is melted and viscous and adheres to the foamed particles 3 as shown in the sixth figure. As indicated above, the steam heating referred to above is filled with water vapor into the mold 2, and the water vapor is 100 °C.

The mold is cooled, and the cooling liquid is cooled in the cavity 21; when the mold 2 is cooled, it is poured into the mold 2 with low temperature water, so that the mold 2 is measured and controlled to between 35 ° C and 25 ° C.

The shoe material is taken out, and the shoe material 1 and the foamed particles 3 are integrated into a shoe material after the mold is taken out, and the shoe material 1 is bonded to one surface of the foamed particle layer 30, that is, the plurality of the shoe parts 1 after being heated and foamed. The expanded beads 3 constitute a layer of foamed particles 30, and the shoe fitting 1 is bonded to one side surface thereof as shown in the seventh figure. In this embodiment and the drawings, a combination of a shoe outsole and a slip-resistant sole is taken as an example.

Through the above description, it can be known that the present invention can be combined with the shoe fitting 1 in the in-mold foaming, so that it can be integrated into one body to achieve a stable combination with each other, thereby avoiding the troubles of time-consuming and troublesome operation of the shoe sole combined with the shoe sole. The purpose and function of this creation.

In addition, the present invention includes the first clamping of the mold before the step of filling the particles into the mold. Referring to the eighth and ninth drawings of the drawing, the mold 2 is horizontally placed in the foregoing steps. The lower mold 23 and the upper mold 24 are included, and a gap of 1 mm to 2 mm is maintained between the lower mold 23 and the upper mold 24; and the second clamping of the mold is included before the vacuuming step of the mold, so that the upper mold 24 and the lower mold 23 The complete mold clamping eliminates the above gap and simultaneously extrudes (compresses) the expanded particles 3 in the cavity 21 as shown in the fourth figure. The gap is reserved by the first clamping (the overall space of the cavity 21 is increased in advance, the volume of the cavity 21 is temporarily increased to accommodate the space of the expanded beads 3), and the extruded foamed particles 3 are clamped for the second time. The effect of pre-compressing the expanded beads 3 and compactly arranging is formed.

There is another embodiment in the creation, please refer to the tenth figure, the shoe fittings 1, 10 referred to in the figure can be two different functions, types, uses, and the two shoe accessories 1 are stacked or spaced from each other. arrangement. The shoe assembly 1 of the foregoing stacked type is only positioned in the cavity 21 by one of the shoe accessories 1, and the shoe accessories are either RB, EVA, TPU stabilizer or foam rubber.

It is worth mentioning that, in the step of filling the particles in the mold of the foregoing embodiment, a single type of expanded particles 3 (EPOP, non-crosslinked TPU expanded beads) is taken as an example, and the gel particles 31 and foaming may also be used. The particles 3 are mixed in the cavity 21, and the number of the gel particles 31 is less than that of the expanded particles 3. The aforementioned gel particles 31 are PU-GEL, as described in Figure 11 shows.

The shoe material integrally formed structure can be produced by the above-mentioned manufacturing method, and includes: a foamed particle layer 30 composed of a plurality of expanded beads 3 stacked with an uneven particle diameter, and a surface of the expanded particle layer 30 including a front end a rear end and an intermediate position between the front end and the rear end; and a combination of the shoe fitting 1 in the mold and the foamed particle layer 30 by foaming and bonding to any of the foregoing positions, or both of the front end, the rear end, or the intermediate position .

1‧‧‧Shoe accessories

2‧‧‧Mold

21‧‧‧ cavity

22‧‧‧Location points

23‧‧‧Down

Claims (2)

A mold for integrally forming a shoe material, comprising an upper mold and a lower mold, wherein the upper and lower molds form a cavity on opposite sides when the mold is closed, and the bottom surface of the mold hole is provided with a positioning point to provide a horizontal arrangement of the shoe accessories, The cavity provides foaming after the foamed particles are filled, so that the foamed particles are integrated with the shoe accessories, and the foamed particles are located on one side surface of the shoe fitting. The mold for integrally forming a shoe material according to claim 1, wherein the upper mold comprises a feed hole, a vapor passage, a cooling passage, and a discharge passage, and the lower mold includes a vapor passage, a cooling passage, and a discharge passage.