CN110549537A - Heating sole mould - Google Patents

Abstract

A heated sole mold comprises a mold base unit, at least one mold core unit, a magnetic conductive heating unit and a coil unit. The mold base unit defines a mold core space. The mold core unit is arranged in the mold core space and defines a molding space, and the molding space is suitable for pressure molding of foaming materials. The magnetic conductive heating unit includes at least one magnetic conductive heating element, and the magnetic conductive heating element surrounds the outer periphery of the mold core unit, and the magnetic conductive heating element has a magnetic conductive coefficient greater than the magnetic conductive coefficient of the mold core unit. The coil unit surrounds the outer periphery of the magnetic conductive heating element, and is used to provide electromagnetic waves to cause the magnetic conductive heating element to be inductively heated, and then conduct heat to the mold core unit. In this way, the magnetic conductive heating element can be quickly inductively heated and conduct heat to the mold core unit. In addition to improving the heating speed of the mold core unit, since the material with high magnetic conductive coefficient can also improve the heating efficiency, it also has the effect of reducing energy consumption.

Description

Heated sole mold

technical field

The invention relates to a mold, in particular to a heating sole mold.

Background technique

Existing footwear generally uses rubber as the sole material. However, due to the high density of rubber, the resulting footwear is heavy, which does not meet the current lightweight requirements for sports shoes and casual shoes.

For this reason, at present, the industry has developed foamed soles, which combine the characteristics of shock absorption, softness, lightness, etc., as shown in Taiwan's new patent No. Secondary pressing process for foam soles. However, using heater heating to directly heat the mold is not only slow and the temperature is uneven, but also due to the heat conduction effect, the heat energy will spread to any components that are in contact with the mold, resulting in the surrounding components being exposed to high temperature for a long time. The service life is shortened, resulting in an increase in equipment maintenance costs.

Contents of the invention

The object of the present invention is to provide a heated shoe sole mold which can increase the heating speed.

The heating sole mold of the present invention comprises a mold base unit, at least one core unit, a magnetic conduction heating unit, and a coil unit.

The mold base unit defines a mold core space.

The mold core unit is arranged in the mold core space, and defines a molding space, and the molding space is suitable for pressure molding of foaming materials.

The magnetically conductive heating unit includes at least one magnetically conductive heating element, the magnetically conductive heating element surrounds the outer periphery of the mold core unit, and the magnetic permeability of the magnetically conductive heating element is greater than that of the mold core unit.

The coil unit surrounds the outer circumference of the magnetically conductive heating element, and is used to provide electromagnetic waves to inductively heat the magnetically conductive heating element, and then conduct heat to the core unit.

In the heated shoe sole mold of the present invention, the thermal conductivity of the mold core unit is greater than that of the magnetically conductive heating element.

The heating sole mold of the present invention further includes a magnetic modulation unit, and the magnetic modulation unit is arranged between the mold base unit and the coil unit.

In the heating sole mold of the present invention, the magnetic modulation unit is made of soft magnetic material.

In the heated shoe sole mold of the present invention, the magnetic permeability of the at least one magnetically conductive heating element is greater than the magnetic permeability of the mold base unit.

In the heated shoe sole mold of the present invention, the volume of the magnetic conduction heating unit is smaller than that of the core unit.

In the heated shoe sole mold of the present invention, the magnetically conductive heating unit includes a plurality of magnetically conductive heating elements surrounding the molding space, and the magnetically conductive heating elements are in the shape of rods or sheets.

In the heated shoe sole mold of the present invention, the mold core unit is detachably arranged in the mold core space.

In the heated shoe sole mold of the present invention, the coil unit uses high-frequency technology for heating.

Heating sole mold of the present invention, wherein:

The mold base unit includes a lower mold base and an upper mold base, and the lower mold base cooperates with the upper mold base to define the mold core space.

The mold core unit includes a lower mold core and an upper mold core, the lower mold core is set on the lower mold base, and the upper mold core is set on the upper mold base, and the lower mold core and the The cores of the upper mold cooperate to define the molding space.

The magnetically conductive heating unit includes at least two magnetically conductive heating elements, one of which is disposed around the lower mold core, and the other magnetically conductive heating element is disposed around the upper mold core.

The coil unit includes a lower mold coil and an upper mold coil, the lower mold coil surrounds the lower mold core, and the upper mold coil surrounds the upper mold core.

The heated shoe sole mold of the present invention also includes a temperature regulation unit, the temperature regulation unit is arranged in the mold core unit, the temperature regulation unit includes an upper temperature regulation module and a lower temperature regulation module, and the lower temperature regulation module is arranged in the In the core of the lower mold, the upper temperature-regulating module is arranged in the core of the upper mold.

The beneficial effects of the present invention are: by arranging the magnetically conductive heating unit and the coil unit, and designing the magnetically permeable coefficient of the magnetically conductive heating element to be greater than the magnetically permeable coefficient of the mold core unit, the magnetically permeable The heating element is quickly heated by induction and conducts heat to the mold core unit. In addition to increasing the heating speed of the mold core unit, the material with high magnetic permeability can also improve the heating efficiency, so it also has the effect of reducing energy consumption .

Description of drawings

Fig. 1 is the three-dimensional exploded view of the first embodiment of the heating sole mold of the present invention;

Fig. 2 is a schematic cross-sectional view of the first embodiment;

Fig. 3 is an incomplete perspective view of the first embodiment, illustrating that the coil unit of the first embodiment surrounds the magnetic conduction heating unit and the core unit;

Fig. 4 is the schematic sectional view of the second embodiment of the heating sole mold of the present invention;

Fig. 5 is the three-dimensional exploded view of the third embodiment of the heating sole mold of the present invention; and

Fig. 6 is a schematic cross-sectional view of the third embodiment.

Detailed ways

The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

Before the present invention is described in detail, it should be noted that in the following description, similar elements are denoted by the same numerals.

Referring to Fig. 1, Fig. 2 and Fig. 3, the first embodiment of the heating sole mold of the present invention is suitable for the secondary pressing process of a group of midsoles, including a mold base unit 2, two mold core units 3, a temperature regulating Unit 4 , a magnetic heating unit 5 and a coil unit 6 . Wherein, the material of the midsole can be at least one of ethylene/vinyl acetate copolymer (EVA) and thermoplastic polyurethane elastomer (TPU).

It should be noted that in the illustration of this embodiment, one pair of midsoles is produced at a time as an illustration, so two mold core units 3 are used together, and the mold base unit 2, the temperature adjustment unit 4, the magnetic conduction heating The unit 5 and the coil unit 6 are also designed to accommodate a pair of midsoles at the same time, but this embodiment is not limited to the application of a pair of midsoles, and it can be used with a mold core unit 3 or any number of mold core units 3. It can be applied to one midsole or any number of midsoles.

The mold base unit 2 includes a lower mold base 21 and an upper mold base 22 , and the upper mold base 22 cooperates with the lower mold base 21 to define a mold core space 23 . The mold base unit 2 is implemented using a material with a low magnetic permeability, preferably a material with a relative magnetic permeability of less than 10, more preferably aluminum with a relative magnetic permeability of 1.

The mold core unit 3 is arranged in the mold core space 23, each mold core unit 3 includes a lower mold core 31 and an upper mold core 32, the lower mold core 31 is arranged on the lower mold base 21, and The upper mold core 32 is arranged in the upper mold base 22 and the lower mold core 31, and the upper mold core 32 cooperates with the lower mold core 31 to form a forming space 33, and the forming space 33 It is suitable for press molding a foam material 9 to form the midsole, and the foam material 9 is a material selected from the materials of the midsole mentioned above. Wherein, the mold core unit 3 is designed to be detachably arranged in the mold core space 23 .

The temperature regulation unit 4 is arranged on the mold core unit 3 and is used for cooling the mold core unit 3, and includes a lower temperature regulation module 41 and an upper temperature regulation module 42, and the lower temperature regulation module 41 is arranged on the lower temperature regulation module 4. Inside the mold core 31 , the upper temperature regulation module 42 is arranged in the upper mold core 32 . Wherein, the lower temperature-regulating module 41 and the upper temperature-regulating module 42 are designed as pipelines that pass through the lower mold core 31 and the upper mold core 32 respectively, and can inject heat through the pipelines. Water or cold water can be used to raise or lower the temperature, or electric heating tubes respectively pierced in the lower mold core 31 and the upper mold core 32 can be used as an alternative heating method.

The magnetically conductive heating unit 5 includes a plurality of magnetically conductive heating elements 51. The number of the magnetically conductive heating elements 51 matched with the mold core unit 3 is divided into two groups, and surrounds the molding space 33 and the mold core respectively. On the periphery of the kernel unit 3 , each group of magnetically conductive heating elements 51 is further divided into two groups, one group is arranged around the corresponding lower mold core 31 , and the other group is arranged around the corresponding upper mold core 32 . The magnetically conductive heating element 51 is preferably in a small-volume shape such as a rod or a sheet, and is inserted or embedded in the corresponding core unit 3 . Wherein, the volume of each group of magnetically conductive heating units 5 is smaller than that of the corresponding core unit 3 .

Wherein, the magnetic permeability of the magnetically conductive heating element 51 is greater than the magnetic permeability of the mold core unit 3, in order to obtain a better induction heating effect, it is preferable to use a material with a relative magnetic permeability greater than 10, such as carbon Steel (JIS S45C), with a high magnetic permeability of 190, is more likely to induce eddy currents. The thermal conductivity of the mold core unit 3 is greater than that of the magnetic heating element 51 to obtain a better conduction heating effect. It is preferable to use a material with a thermal conductivity greater than 50W/m·K, such as aluminum.

The coil unit 6 surrounds the outer circumference of the magnetically conductive heating element 51, and is used to provide electromagnetic waves to inductively heat the magnetically conductive heating element 51, and then conduct heat to the mold core unit 3, and includes a lower mold coil 61, a Upper mold coil 62 and a programmable controller (Programmable Logic Controller, abbreviated as PLC) (not shown in the figure), the lower mold coil 61 surrounds the lower mold core 31, and the upper mold coil 62 surrounds the The upper die core 32 , the programmable controller is electrically connected to the lower die coil 61 and the upper die coil 62 . Wherein, the coil unit 6 preferably uses high-frequency (100KHz-300MHz) technology to provide electromagnetic waves for heating.

In the secondary pressing process of the midsole, it is mainly divided into three stages, the first stage is the heating stage, the second stage is the temperature holding stage, and the last is the cooling stage. The use of this embodiment in each stage will be described below Way:

The first stage: heating stage

First put the foam material 9 (the midsole) into the molding space 33, and start heating, the coil unit 6 will pass through a high-frequency signal to generate electromagnetic waves, the magnetic conduction heating unit 5 and the The mold core unit 3 will induce eddy current, and then make the magnetic conduction heating unit 5 and the mold core unit 3 heat up rapidly, because the magnetic conduction heating unit 5 is implemented by carbon steel with high magnetic permeability, and it is made into a small The volume is in the shape of a rod or sheet, so the temperature can be raised quickly, and the mold core unit 3 is implemented using aluminum with a large thermal conductivity and a small specific heat. In addition to induction heating, it can also be quickly heated by the magnetic conduction heating unit 5 Heated by heat conduction, the temperature rises quickly and evenly.

Wherein, in the temperature raising stage, heated hot water may also be passed through the temperature adjustment unit 4 to further increase the heating speed of the mold core unit 3 .

The second stage: holding stage

The programmable controller can control the high-frequency heating time, and can use Pulse Width Modulation (PulseWidth Modulation, abbreviated as PWM) technology to switch the high-frequency current to maintain the mold core unit 3 within a predetermined temperature range.

The third stage: cooling stage

At this stage, cooling water is poured into the temperature adjustment unit 4 to lower the temperature of the core unit 3, and the midsole is finished.

Wherein, since the mold core unit 3 is made of aluminum material, it can conduct heat conduction cooling rapidly, and since the volume of each group of magnetic conduction heating units 5 is smaller than the corresponding mold core unit 3, it will also be rapidly cooled by the corresponding mold core unit 3. Heat conduction and rapid cooling, in this way, overcome the shortcomings of carbon steel materials such as small thermal conductivity, large specific heat, and slow cooling.

Through the above description, the advantages of this embodiment can be summarized as follows:

1. By arranging the magnetically conductive heating unit 5 and the coil unit 6, and designing the magnetically conductive heating unit 5 and the mold core unit 3 using different materials, and making the magnetically conductive heating element 51 The magnetic coefficient is greater than the magnetic permeability of the mold core unit 3 (that is to say, the magnetically conductive heating element 51 is implemented using a material with high magnetic permeability), so that the magnetically conductive heating element 51 can be quickly heated by induction and heat conduction To the core unit 3, therefore, in addition to increasing the heating rate of the core unit 3, since the material with high magnetic permeability can also improve the heating efficiency, it can reduce the input power of high frequency and still achieve the required The heating speed is high, so it also has the effect of reducing energy consumption.

Two, by designing the thermal conductivity coefficient of the mold core unit 3 to be greater than the thermal conductivity coefficient of the magnetically conductive heating element 51 (that is to say, using a material with a high thermal conductivity to implement the mold core unit 3), not only can the mold core unit be improved The heating rate of the core unit 3 through the heat conduction of the magnetically conductive heating element 51 can increase the overall temperature uniformity of the mold core unit 3 to achieve better heating quality.

Three, by designing the magnetic permeability of the magnetically conductive heating element 51 to be greater than the magnetic permeability of the mold base unit 2 (that is to say, using a material with a low magnetic permeability to implement the mold base unit 2), it is possible to reduce the The mold base unit 2 is heated by the induction of the coil unit 6, therefore, it can avoid the shortening of the service life of the surrounding components in contact with the mold base unit 2 due to the high temperature for a long time, resulting in an increase in equipment maintenance costs question.

4. By designing the volume of each group of magnetically conductive heating units 5 to be smaller than the corresponding mold core unit 3, and designing the magnetically conductive heating elements 51 to be in the shape of small rods or sheets, the small volume can increase the The speed of the temperature rise of the magnetically conductive heating element 51 is described to avoid the situation that the temperature is not easy to rise and the temperature is uneven due to the use of carbon steel materials with high magnetic permeability, low thermal conductivity, and large specific heat. In the cooling stage, the small volume Likewise, it is easier to conduct and remove heat energy from the corresponding mold core unit 3 , so the temperature drop rate of the magnetic conduction heating unit 5 can be accelerated.

5. By designing the mold core unit 3 to be detachably arranged in the mold core space 23, when changing and making different shoe shapes, only the mold core unit 3 needs to be replaced. The shoe type shares the same mold base unit 2, so as to achieve the effect of reducing mold cost.

Six, by designing the coil unit 6 to use high-frequency technology for heating, since high-frequency technology is a method for directly penetrating electromagnetic wave energy into the interior of an object and converting it into heat, it has the characteristics of rapid heating and can achieve the effect of accelerating the temperature rise. Furthermore, since various materials have different degrees of absorption of electromagnetic waves, by using electromagnetic waves, this embodiment can use materials with high magnetic permeability to implement the magnetic conduction heating unit 5 to achieve the effect of rapid heating. The mold base unit 2 is implemented by using a material with low magnetic permeability, so as to reduce the temperature of the mold base unit 2 and prevent the surrounding components from being easily damaged.

7. By dividing the magnetically conductive heating element 51 and the coil unit 6 into upper and lower groups, it is possible to better approach and surround the corresponding upper mold core 32 and the corresponding lower mold core 31 respectively, so as to obtain better heating Effect.

8. By setting the temperature adjustment unit 4 on the mold core unit 3, the temperature of the mold core unit 3 can be raised and lowered more quickly.

Referring to Fig. 4, it is the second embodiment of the heating sole mold of the present invention, the second embodiment is similar to the first embodiment, the difference between the second embodiment and the first embodiment is:

The second embodiment also includes a magnetic modulation unit 7 .

The magnetic adjustment unit 7 is arranged between the mold base unit 2 and the coil unit 6, and includes a lower magnetic adjustment module 71 and an upper magnetic adjustment module 72, and the lower magnetic adjustment module 71 is arranged on the lower mold base 21 between the lower mold coil 61 and the upper mold base 22 and the upper mold coil 62, and the upper mold base 22 and the upper mold coil 62, the lower magnetic module 71 and the upper magnetic module 72 are preferably respectively It is arranged around the lower mold coil 61 and the upper mold coil 62 for adjusting the direction of the electromagnetic wave of the coil unit 6 towards the core unit 3 .

The magnetic modulation unit 7 is a soft magnetic material. Since the soft magnetic material can change the transmission direction of the high-frequency electromagnetic wave, the electromagnetic wave towards the mold base unit 2 is transferred towards the direction of the mold core unit 3 instead. Therefore, it is possible to increase the The induction heating effect of the magnetic conduction heating unit 5 increases the heating speed of the mold core unit 3 and suppresses the temperature rise of the mold base unit 2 to prevent the surrounding components from being easily damaged.

In this way, the second embodiment can also achieve the same purpose and effect as the first embodiment, and also has the effect of increasing the heating speed and reducing the damage of surrounding components.

Referring to Fig. 5 and Fig. 6, it is the third embodiment of the heating sole mold of the present invention, the third embodiment is similar to the second embodiment, the difference between the third embodiment and the second embodiment in:

The magnetically conductive heating unit 5 of the third embodiment includes four magnetically conductive heating elements 51 . Wherein, the number of the magnetically conductive heating elements 51 is determined by the number of the mold core units 3, and each mold core unit 3 is used with two magnetically conductive heating elements 51. Therefore, the magnetically conductive heating elements 51 The quantity can vary according to the quantity of mold core units 3 used, but is not limited thereto.

The magnetically conductive heating element 51 is in the shape of a box cover, and is respectively sleeved on the lower mold core 31 and the upper mold core 32, and is located between each mold core unit 3 and the coil unit 6. The heating element 51 is preferably matched with the shape design of the corresponding lower mold core 31 and the corresponding upper mold core 32, so as to be fitted and sleeved on the corresponding lower mold core 31 and the corresponding upper mold core 32, so as to obtain better Heat conduction heating effect.

Wherein, the magnetically conductive heating unit 5 can also only include a magnetically conductive heating element 51, and the magnetically conductive heating element 51 is directly sleeved on the lower mold core 31 and the upper mold core 32. It can be changed according to actual needs and is not limited to this.

Wherein, the magnetically conductive heating element 51 is preferably in the form of a thin sheet, so as to achieve the same small-volume effect as above.

In this way, the third embodiment can also achieve the same purpose and effect as the second embodiment above, and also has the effects of facilitating assembly and increasing production speed.

To sum up, the heating of the shoe sole mold in the present invention can indeed achieve the purpose of the present invention.

The above is only an embodiment of the present invention, and should not limit the scope of the present invention with this, that is, all simple equivalent changes and modifications made according to the claims of the present invention and the contents of the description are still within the scope of this invention. the scope of the invention.

Claims (11)

1. A heating sole mould is characterized in that:

The heating sole mould comprises a mould seat unit, at least one mould core unit, a magnetic conduction heating unit and a coil unit;

The die holder unit defines a die cavity space;

The mould core unit is arranged in the mould core space and defines a forming space, and the forming space is suitable for the foaming material to be pressurized and formed;

The magnetic conduction heating unit comprises at least one magnetic conduction heating element, the magnetic conduction heating element surrounds the periphery of the die core unit, and the magnetic permeability coefficient of the magnetic conduction heating element is greater than that of the die core unit; and

And the coil unit surrounds the periphery of the magnetic conduction heating element and is used for providing electromagnetic waves to enable the magnetic conduction heating element to perform induction heating so as to conduct heat to the die core unit.

2. The heated sole mold of claim 1, wherein: the heat conduction coefficient of the die core unit is larger than that of the magnetic conduction heating member.

3. The heated sole mold of claim 1, wherein: the heating sole mold further comprises a magnetic adjusting unit, and the magnetic adjusting unit is arranged between the mold base unit and the coil unit.

4. the heated sole mold of claim 3, wherein: the magnetic regulating unit is made of soft magnetic materials.

5. the heated sole mold of claim 1, wherein: and the magnetic permeability coefficient of the at least one magnetic conduction heating element is greater than that of the die holder unit.

6. The heated sole mold of claim 1, wherein: the volume of the magnetic conduction heating unit is smaller than that of the die core unit.

7. The heated sole mold of claim 1, wherein: the magnetic conduction heating unit comprises a plurality of magnetic conduction heating members surrounding the forming space, and the magnetic conduction heating members are rod-shaped or sheet-shaped.

8. The heated sole mold of claim 1, wherein: the mold core unit is arranged in the mold core space in a detachable mode.

9. The heated sole mold of claim 1, wherein: the coil unit is heated using high frequency technology.

10. The heated sole mold of claim 1, wherein:

The die holder unit comprises a lower die holder and an upper die holder, the lower die holder is matched with the upper die holder to define the die core space,

The die core unit comprises a lower die core and an upper die core, the lower die core is arranged on the lower die base, the upper die core is arranged on the upper die base, the lower die core and the upper die core are matched to define the forming space,

The magnetic conduction heating unit comprises at least two magnetic conduction heating members, wherein one magnetic conduction heating member is arranged around the lower die core, the other magnetic conduction heating member is arranged around the upper die core,

The coil unit comprises a lower die coil and an upper die coil, the lower die coil surrounds the lower die core, and the upper die coil surrounds the upper die core.

11. The heated sole mold of claim 10, wherein: this heating sole mould still contains the thermoregulation unit, the thermoregulation unit set up in the mould benevolence unit, the thermoregulation unit includes last thermoregulation module and lower thermoregulation module, lower thermoregulation module set up in the lower mould benevolence, go up the thermoregulation module set up in the upper mould benevolence.