WO2023193397A1 - 一种鞋子的制造模具及制造方法 - Google Patents

一种鞋子的制造模具及制造方法 Download PDF

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Publication number
WO2023193397A1
WO2023193397A1 PCT/CN2022/116074 CN2022116074W WO2023193397A1 WO 2023193397 A1 WO2023193397 A1 WO 2023193397A1 CN 2022116074 W CN2022116074 W CN 2022116074W WO 2023193397 A1 WO2023193397 A1 WO 2023193397A1
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Prior art keywords
mold
shoe
heating
cavity
cooling channel
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PCT/CN2022/116074
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English (en)
French (fr)
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蔡乃强
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蔡乃强
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Publication of WO2023193397A1 publication Critical patent/WO2023193397A1/zh

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    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43D—MACHINES, TOOLS, EQUIPMENT OR METHODS FOR MANUFACTURING OR REPAIRING FOOTWEAR
    • A43D25/00—Devices for gluing shoe parts
    • A43D25/06—Devices for gluing soles on shoe bottoms
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/02—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles
    • B29C44/12—Incorporating or moulding on preformed parts, e.g. inserts or reinforcements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/34—Auxiliary operations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/34—Auxiliary operations
    • B29C44/3415—Heating or cooling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/34—Auxiliary operations
    • B29C44/58—Moulds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/48—Wearing apparel
    • B29L2031/50—Footwear, e.g. shoes or parts thereof

Definitions

  • the present invention relates to the technical field of shoe manufacturing, and in particular to a shoe manufacturing mold and a manufacturing method.
  • the purpose of the present invention is to provide a shoe manufacturing mold and a manufacturing method, which do not require manual assembly, the entire shoemaking process is environmentally friendly and reasonable, and can improve the production efficiency of shoemaking. And make the quality of shoes better.
  • a shoe manufacturing mold includes an upper mold, a middle mold, a lower mold and a shoe last that can be sealed and matched; the upper mold is provided with an upper cavity; the middle mold is provided with a middle cavity; and the lower mold is provided with a lower cavity ; The lower cavity and the middle cavity form a shoe midsole molding cavity; the upper end of the shoe last is installed in the upper cavity, and the lower end is inserted into the shoe midsole molding cavity; the shoe last is provided with a first heating and cooling device that penetrates the upper end surface of the shoe last channels and several air channels distributed on the bottom surface of the shoe last and respectively connected with the first heating and cooling channels; the upper mold is provided with a second heating and cooling channel that runs through the upper and lower ends of the upper mold and is connected to the shoe midsole molding cavity.
  • the second heating and cooling and the air channel for filling carbon dioxide for heating or cooling can make the production of shoes simple, fast and environmentally friendly, improve production efficiency and yield rate, and produce shoes The quality is better.
  • a third heating and cooling channel is also included, and the third heating and cooling channel passes through the upper and lower ends of the upper mold and the middle mold in sequence, and is connected to the shoe midsole molding cavity.
  • a third heating and cooling channel By setting up a third heating and cooling channel, it can also be used to fill in carbon dioxide for heating or cooling.
  • the midsole of the shoe can better contact with carbon dioxide during the production process, so that it can foam evenly, thereby ensuring that the upper and the The midsole of the shoe is better bonded during the manufacturing process.
  • the second heating and cooling channel is connected to the top of the shoe midsole molding cavity; the third heating and cooling channel is connected to the bottom of the shoe midsole molding cavity.
  • an air channel connected to the second heating and cooling channel is provided on the inner wall around the upper end of the middle mold, so that carbon dioxide can enter the shoe midsole molding cavity more evenly along the surrounding sides of the middle mold for heating, that is, The surrounding areas of the shoe midsole molding cavity are exposed to carbon dioxide, ensuring production efficiency and production effects, and speeding up the cooling during cooling.
  • it also includes a cover plate; a positioning cavity connected to the upper cavity is provided on the top of the upper mold; the upper end of the shoe last is inserted into the positioning cavity; the cover plate is matchedly provided in the positioning cavity, and A spring is connected between the bottom of the cover plate and the bottom of the positioning cavity; the top of the shoe last is connected to the cover plate.
  • the present invention also provides a method for manufacturing shoes manufactured using the above-mentioned manufacturing mold, which includes the following steps:
  • the first heating and cooling channel is evacuated to extract the carbon dioxide for subsequent processes
  • the foaming raw material particles are TPU, two-component PU or EVA.
  • carbon dioxide is used to keep heating the foaming raw material pellets for 1 to 3 minutes.
  • the foaming raw material pellets are foamed for 5 to 15 seconds.
  • step (9) the temperature of the filled vaporized dry ice is -37 degrees Celsius.
  • the present invention utilizes the properties and characteristics of supercritical carbon dioxide, which does not require additional heating or cooling of the mold during the shoemaking process.
  • the process is simpler, can improve the production efficiency of shoemaking, and the use of carbon dioxide makes the entire shoemaking process environmentally friendly; Inflating the mold can control the better adhesion of the shoe midsole with the shoe outsole and shoe upper during the foaming process. At the same time, it greatly reduces the risk of glue overflow between the shoe midsole, the shoe upper and the shoe outsole during the production process.
  • the various parts of the shoe are not easy to deglue, making the quality of the shoe better and the yield rate higher.
  • Figure 1 is a schematic diagram of the overall structure of the present invention.
  • Figure 2 is a longitudinal cross-sectional view of the present invention
  • Figure 3 is a longitudinal cross-sectional view 2 of the present invention.
  • Figure 4 is a side view of the middle mold of the present invention.
  • Figure 5 is a top view of the middle mold of the present invention.
  • Figure 6 is a schematic diagram of the bottom structure of the shoe last of the present invention.
  • Figure 7 is a schematic structural diagram of the lower mold of the present invention.
  • a shoe manufacturing mold includes an upper mold 1, a middle mold 2, a lower mold 3 and a shoe last 4 that can be sealed and matched; an upper cavity 101 is provided on the upper mold 1; in the middle mold 2 is provided with a middle cavity 201; a lower cavity 301 is provided on the lower mold 3; the lower cavity 301 and the middle cavity 201 form a shoe midsole molding cavity 5; the upper end of the shoe last 4 is installed in the upper cavity 101, and the lower end is inserted into the shoe In the midsole molding cavity 5, specifically, the lower end of the shoe last 4 is inserted into the middle position of the shoe last 4; the shoe last 4 is provided with a first heating and cooling channel 6 that penetrates the upper end surface of the shoe last 4 and is distributed in the shoe.
  • a third heating and cooling channel 9 is also included.
  • the third heating and cooling channel 9 passes through the upper and lower ends of the upper mold 1 and the middle mold 2 in turn, and is connected to the shoe midsole molding cavity 5.
  • the second heating and cooling channel 8 is connected to the top of the shoe midsole molding cavity 5; the third heating and cooling channel 9 is connected to the bottom of the shoe midsole molding cavity 5.
  • the second heating and cooling channel 8 and the third heating and cooling channel 9 are located behind the shoe last 4, while the first heating and cooling channel 6 is close to the rear end of the shoe last.
  • an air groove 13 connected with the second heating and cooling channel 8 is provided on the inner wall around the upper end of the middle mold 2 .
  • multiple air channels 7 are provided, and the multiple air channels 7 are staggered and evenly distributed on the bottom surface of the shoe last 4 , thereby ensuring that the gas can fully contact the inside of the shoe upper 502 and affect the shoe upper 502 put pressure on.
  • FIG 2 it also includes a cover plate 10; a positioning cavity 11 connected with the upper cavity 101 is provided on the top of the upper mold 1; the upper end of the shoe last 4 is inserted into the positioning cavity 11; the cover plate 10 is provided in a matching manner
  • a spring 12 is connected in the positioning cavity 11 and between the bottom of the cover plate 10 and the bottom of the positioning cavity 11; the top of the shoe last 4 is connected to the cover plate 10.
  • at least two springs 12 are provided, and the at least two springs 12 are distributed on both sides of the shoe last 4 .
  • the present invention also provides a method for manufacturing shoes manufactured using the above-mentioned manufacturing mold, which includes the following steps:
  • the first heating and cooling channel 6 is evacuated (i.e., the pressure is released) to extract the carbon dioxide;
  • step 8 Connect the first heating and cooling channel 6, the second heating and cooling channel 7 and the third heating and cooling channel 8 to the cooling equipment, and connect the first heating and cooling channel 6, the second heating and cooling channel 7 and the third heating and cooling channel
  • gasified dry ice i.e. carbon dioxide
  • step 8 gasified dry ice (i.e. carbon dioxide) is charged to cool the foamed raw material pellets, so that the foamed raw material pellets form the shoe midsole 503;
  • the foaming raw material pellets can be TPU, two-component PU or EVA.
  • step (5) when the foaming raw material pellets are TPU, carbon dioxide above 150 degrees Celsius will be added.
  • the foaming raw material pellets are When two-component PU is used, carbon dioxide above 135 degrees Celsius will be added.
  • the foaming raw material pellets are EVA, carbon dioxide above 80 degrees Celsius will be added. Therefore, different temperatures can be ensured by selecting corresponding temperatures for different foaming raw material pellets. Heating effect on foaming raw material pellets.
  • step (6) the foaming raw material pellets are kept heated for 1 to 3 minutes. Since carbon dioxide is gradually pressurized, heating the material for 30 seconds to 1 minute can basically soften the material.
  • the foaming raw material pellets are foamed for 5 to 15 seconds. In order to ensure the foaming effect, foaming for 15 seconds is generally selected.
  • the temperature of the filled vaporized dry ice is -37 degrees Celsius.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)

Abstract

本发明公开了一种鞋子的制造模具及制造方法，其中，制造模具包括有可密封配合的上模、中模、下模和鞋楦；在上模上设置有上腔；在中模上设置有中腔；在下模上设置有下腔；下腔与中腔构成一鞋中底成型腔；鞋楦的上端安装在上腔内，下端插入至鞋中底成型腔中；在鞋楦上设置有贯穿鞋楦上端面的第一加热冷却通道和分布在鞋楦底面上的且分别与第一加热冷却通道连通的若干条气道；在上模中设置有贯穿上模上下两端的并连通至鞋中底成型腔中的第二加热冷却通道。本发明在制鞋过程中不需要另外对模具加热或冷却，过程简单，生产效率高，其可利用二氧化碳使整个制鞋过程更环保，且制鞋过程中让鞋中底在发泡时可与鞋大底和鞋面更好地粘合，使鞋子的质量更好。

Description

一种鞋子的制造模具及制造方法 技术领域
本发明涉及鞋子制造技术领域，具体是涉及一种鞋子的制造模具及制造方法。
背景技术
传统的鞋子制作过程，通常较为繁琐，需要依次制作鞋面、鞋中底和鞋大底，再将其全部组合起来。鞋面、鞋中底和鞋大底的组合过程需要人工进行调整，加热并利用胶水粘贴，一方面需要人工进行的地方较多，质量难以稳定且效率低，坏品率较高，同时，现有这些做法也不够环保。因此，需要对现有技术进行改进。
发明内容
针对以上现有技术所存在的问题，本发明的目的是提供一种鞋子的制造模具及制造方法，其不需要人工地组合，整个制鞋过程环保合理，且其能够提高制鞋的生产效率，并使得鞋子的质量更好。
为了实现上述目的，本发明的技术方案是：
一种鞋子的制造模具，包括有可密封配合的上模、中模、下模和鞋楦；在上模上设置有上腔；在中模上设置有中腔；在下模上设置有下腔；下腔与中腔构成一鞋中底成型腔；鞋楦的上端安装在上腔内，下端插入至鞋中底成型腔中；在鞋楦上设置有贯穿鞋楦上端面的第一加热冷却通道和分布在鞋楦底面上的且分别与第一加热冷却通道连通的若干条气道；在上模中设置有贯穿上模上下两端的并连通至鞋中底成型腔中的第二加热冷却通道。利用上述的模具配合用于充入二氧化碳进行加热或冷却的第一加热冷却通道、第二加热冷却和气道能够 让鞋子的制作简单快捷且环保，提高了生产效率和良品率，其制作出的鞋子的质量较好。
作为一种具体的实施方式，还包括有第三加热冷却通道，第三加热冷却通道依次贯穿上模和中模的上下两端，并连通至鞋中底成型腔中。通过设置第三加热冷却通道也能够用于充入二氧化碳进行加热或冷却，在加热时让鞋中底在制作过程中可以更好地与二氧化碳接触，从而可以均匀地发泡，进而保证鞋面与鞋中底在制作过程中更好地粘合。
进一步地，第二加热冷却通道连通至鞋中底成型腔的顶部；第三加热冷却通道连通至鞋中底成型腔的底部。通过以上设置能够更进一步地提高鞋中底在制作过程中与二氧化碳接触的均匀性，保证发泡的效果。
进一步地，在中模的上端的四周内壁上设置有一与第二加热冷却通道连通的气沟，从而让二氧化碳可以更均匀地沿中模的四周进入到鞋中底成型腔进行加热内，亦即鞋中底成型腔的四周均会接触到二氧化碳，保证了生产效率和制作效果，而在冷却时又可以加快冷却速度。
作为一种具体的实施方式，还包括有盖板；在上模的顶部设置有一与上腔连通的定位腔；鞋楦的上端穿设至定位腔中；盖板匹配地设置在定位腔中且盖板的底部与定位腔的底部之间连接有弹簧；鞋楦的顶部与盖板连接。通过以上的设置能够方便地定位好鞋楦。
本发明还提供有一种利用上述制造模具所制造的鞋子的制造方法，包括以下步骤：
(1)在下模的下腔的底部放入上表面带有热熔胶的鞋大底；
(2)在下模上安装好中模，且在鞋中底成型腔中放入发泡原料粒；
(3)在机台上固定上模，将鞋面套设在鞋楦上之后，在鞋面的底面上设置 热熔胶，再将鞋楦配合地安装在上模的上腔中；
(4)将上模、中模、下模和鞋楦合模，使鞋面的下端插入至鞋中底成型腔的发泡原料粒内，从而能够保证各材料与模具之间的配合；
(5)在第一加热冷却通道、第二加热冷却通道和第三加热冷却通道中充入温度为80～200摄氏度的二氧化碳，直至鞋面的内侧压力和鞋中底成型腔内的压力均达到100个大气压使二氧化碳穿透入发泡原料粒内；当二氧化碳的压力达到100个大气压，且温度为80～200摄氏度时，二氧化碳处于超临界状态，超临界状态的二氧化碳与其他超临界流体一样具有很强的溶剂化能力，且具有超强的渗透能力，能够渗透于发泡原料粒中；并且二氧化碳为惰性气体，不会与萃取的物质发生化学反应，且二氧化碳无毒、无残留、环保无污染，成本低易获取；充入二氧化碳的过程可以保证超临界二氧化碳的流动让发泡原料粒能够均与超临界二氧化碳有均匀的接触，防止接触不均匀；
(6)利用二氧化碳保持对发泡原料粒加热若干分钟，并确定各材料间软化穿透溶合；这样做可以保证发泡原料粒的发泡效果，以便将发泡原料粒形成质量好的鞋中底，且还可以保证热熔胶与发泡原料粒之间可以紧密地贴合连接，以便使鞋子的质量更好；
(7)对第二加热冷却通道和第三加热冷却通道抽真空，将二氧化碳抽出，使鞋面的内侧与鞋中底成型腔之间存在压力差，同时，让发泡原料粒发泡若干秒；利用鞋面的内侧与鞋中底成型腔之间的压力差可以让二氧化碳驱动鞋面一直有向下移动的趋势，保证鞋面和鞋大底分别与发泡过程中的发泡原料粒之间可以充分接触，并且能够更好地粘合，大大地降低鞋面四周外壁与鞋中底以及鞋中底与鞋大底之间溢胶的风险且鞋子各部分之间也不易脱胶；
(8)发泡完成后，对第一加热冷却通道抽真空，将二氧化碳抽出，以便后 续的工序；
(9)在第一加热冷却通道、第二加热冷却通道和第三加热冷却通道内充入气化后的干冰对发泡后的发泡原料粒进行冷却；充入气化的干冰后可以让发泡后的发泡原料粒快速冷却，从而加速鞋子的制作过程；
(10)完成流程后开模，并取出套设在鞋楦上的鞋制品。
作为一种具体的实施方式，所述的发泡原料粒为TPU、二液型PU或EVA。
作为一种具体的实施方式，在所述的步骤(6)中，利用二氧化碳保持加热发泡原料粒1～3分钟。
作为一种具体的实施方式，在所述的步骤(7)中，发泡原料粒发泡5～15秒。
作为一种具体的实施方式，在所述的步骤(9)中，充入的气化干冰的温度为-37摄氏度。
本发明的有益效果为：
本发明利用超临界二氧化碳的性质及特性，其在制鞋过程中不需要另外对模具加热或冷却，过程更简便，能够提高制鞋的生产效率，且二氧化碳的使用让整个制鞋过程环保；通过对模具的充气可控制鞋中底在发泡过程中与鞋大底和鞋面更好地粘合，同时，大大地降低鞋中底与鞋面和鞋大底在制作过程中溢胶的风险且鞋子各部分之间也不易脱胶，使得鞋子的质量更好，良品率更高。
附图说明
图1是本发明的整体结构示意图；
图2是本发明的纵向截面图一；
图3是本发明的纵向截面图二；
图4是本发明的中模的侧视图；
图5是本发明的中模的俯视图；
图6是本发明的鞋楦的底部结构示意图；
图7是本发明的下模的结构示意图。
附图标记：
1、上模；101、上腔；2、中模；201、中腔；3、下模；301、下腔；4、鞋楦；5、鞋中底成型腔；6、第一加热冷却通道；7、气道；8、第二加热冷却通道；9、第三加热冷却通道；10、盖板；11、定位腔；12、弹簧；13、气沟；14、密封圈；500、鞋大底；501、热熔胶；502、鞋面；503、鞋中底。
具体实施方式
下面结合附图和具体实施例对发明做进一步阐述，下述说明仅是示例性的，不限定发明的保护范围。
如图1-图7，一种鞋子的制造模具，包括有可密封配合的上模1、中模2、下模3和鞋楦4；在上模1上设置有上腔101；在中模2上设置有中腔201；在下模3上设置有下腔301；下腔301与中腔201构成一鞋中底成型腔5；鞋楦4的上端安装在上腔101内，下端插入至鞋中底成型腔5中，具体为鞋楦4的下端插入至鞋中底成型腔5的中部位置；在鞋楦4上设置有贯穿鞋楦4上端面的第一加热冷却通道6和分布在鞋楦4底面上的且分别与第一加热冷却通道6连通的若干条气道7；在上模1中设置贯穿上模上下两端的并连通至鞋中底成型腔5中的第二加热冷却通道8。
如图2所示，还包括有第三加热冷却通道9，第三加热冷却通道9依次贯穿上模1和中模2的上下两端，并连通至鞋中底成型腔5中。
优选的，如图2所示，第二加热冷却通道8连通至鞋中底成型腔5的顶部；第三加热冷却通道9连通至鞋中底成型腔5的底部。
优选的，如图2所示，第二加热冷却通道8和第三加热冷却通道9位于鞋楦4的后方，而第一加热冷却通道6靠近鞋楦的后端。
在本实施例中，如图2、图4和图5所示，在中模2的上端的四周内壁上设置有一与第二加热冷却通道8连通的气沟13。
优选的，气道7设置有多条，且多条气道7相互交错地均匀分布在鞋楦4的底面上，从而保证了气体可以充分地与鞋面502的内侧接触，并对鞋面502施加压力。
如图2所示，还包括有盖板10；在上模1的顶部设置有一与上腔101连通的定位腔11；鞋楦4的上端穿设至定位腔11中；盖板10匹配地设置在定位腔11中且盖板10的底部与定位腔11的底部之间连接有弹簧12；鞋楦4的顶部与盖板10连接。具体的，弹簧12设置有至少两条，且至少两条的弹簧12分布在鞋楦4的两侧。
在本实施例中，如图2所示，为了提高上模1、中模2、下模3与鞋楦4相互之间的密封性，在上模1与中模2及中模2与下模3之间均设置有密封圈14；在鞋楦4的上端与上模1之间也设置有密封圈14。
本发明还提供有一种利用上述制造模具所制造的鞋子的制造方法，包括以下步骤：
(1)在下模3的下腔301的底部放入上表面带有热熔胶501的鞋大底500；
(2)在下模3上安装好中模2，且在鞋中底成型腔5中放入发泡原料粒；
(3)在机台上固定好上模1，将鞋面502套设在鞋楦4上之后，在鞋面502的底面上设置热熔胶501，再将鞋楦4配合地安装在上模1的上腔101中；具体地说，上模1固定后会接通准备用于输入加热的二氧化碳的设备；
(4)将上模1、中模2、下模3和鞋楦4合模，使鞋面502的下端插入至 鞋中底成型腔5的发泡原料粒内；具体地说，合模后，鞋楦4连带着鞋面502插入多个的发泡原料粒中，且中模2套设在鞋面502的下端，中模2的内壁与鞋面502下端的外壁之间存在间隙以用于填入发泡后的发泡原料粒，而中模2的顶部与底面之间密封，防止发泡后的发泡原料粒溢出；
(5)在第一加热冷却通道6、第二加热冷却通道7和第三加热冷却通道8中充入温度为80～200摄氏度的二氧化碳，直至鞋面502的内侧压力和鞋中底成型腔5内的压力均达到100个大气压，使二氧化碳穿透入发泡原料粒内，当然，二氧化碳的加压过程是逐渐加压的，使得二氧化碳可以循环流动，加强二氧化碳与发泡原料粒接触的均匀性；
(6)利用二氧化碳保持加热发泡原料粒加热若干分钟，让二氧化碳在鞋中底成型腔5中循环并与发泡原料粒和热熔胶501充分接触，并确定各材料间软化穿透溶合；
(7)对第二加热冷却通道8和第三加热冷却通道9抽真空(即泄压)，将二氧化碳抽出，使鞋面502的内侧与鞋中底成型腔5之间存在压力差，同时，让发泡材料粒201发泡若干秒；
(8)发泡完成后，对第一加热冷却通道6抽真空(即泄压)，将二氧化碳抽出；
(9)将第一加热冷却通道6、第二加热冷却通道7和第三加热冷却通道8接通冷却设备，并在第一加热冷却通道6、第二加热冷却通道7和第三加热冷却通道8中充入气化后的干冰(亦即二氧化碳)对发泡后的发泡原料粒进行冷却，使发泡后的发泡原料粒形成鞋中底503；
(10)完成流程后开模，并取出套设在鞋楦4上鞋制品。
作为进一步改进，发泡原料粒可以为TPU、二液型PU或EVA，其中，在步 骤(5)中，发泡原料粒为TPU时，会选择加入150摄氏度以上的二氧化碳，发泡原料粒为二液型PU时，会选择加入135摄氏度以上的二氧化碳，而发泡原料粒为EVA时，会选择加入80度以上的二氧化碳，因此，对于不同的发泡原料粒选择对应的不同温度后能够保证对发泡原料粒的加热效果。
作为进一步改进，在所述的步骤(6)中，保持加热发泡原料粒1～3分钟，其中，由于二氧化碳是逐渐加压的，所以加热材料30秒～1分钟基本可以使材料软化。
作为进一步改进，在所述的步骤(7)中，发泡原料粒发泡5～15秒，为了保证发泡效果，一般选择发泡15秒。
作为进一步改进，在所述的步骤(9)中，充入的气化干冰的温度为-37摄氏度。
本发明并不局限于上述实施方式，如果对本发明的各种改动或变形不脱离本发明的精神和范围，倘若这些改动和变形属于本发明的权利要求和等同技术范围之内，则本发明也意图包含这些改动和变形。

Claims (10)

  1. 一种鞋子的制造模具，其特征在于：
    包括有可密封配合的上模、中模、下模和鞋楦；在上模上设置有上腔；在中模上设置有中腔；在下模上设置有下腔；下腔与中腔构成一鞋中底成型腔；鞋楦的上端安装在上腔内，下端插入至鞋中底成型腔中；在鞋楦上设置有贯穿鞋楦上端面的第一加热冷却通道和分布在鞋楦底面上的且分别与第一加热冷却通道连通的若干条气道；在上模中设置有贯穿上模上下两端的并连通至鞋中底成型腔中的第二加热冷却通道。
  2. 根据权利要求1所述的鞋子的制造模具，其特征在于：
    还包括有第三加热冷却通道，第三加热冷却通道依次贯穿上模和中模的上下两端，并连通至鞋中底成型腔中。
  3. 根据权利要求2所述的鞋子的制造模具，其特征在于：
    第二加热冷却通道连通至鞋中底成型腔的顶部；第三加热冷却通道连通至鞋中底成型腔的底部。
  4. 根据权利要求3的鞋子的制造模具，其特征在于：
    在中模的上端的四周内壁上设置有一与第二加热冷却通道连通的气沟。
  5. 根据权利要求1所述的鞋子的制造模具，其特征在于：
    还包括有盖板；在上模的顶部设置有一与上腔连通的定位腔；鞋楦的上端穿设至定位腔中；盖板匹配地设置在定位腔中且盖板的底部与定位腔的底部之间连接有弹簧；鞋楦的顶部与盖板连接。
  6. 一种利用权利要求1-5所制造的鞋子的制造方法，其特征在于：包括以下步骤：
    (1)在下模的下腔的底部放入上表面带有热熔胶的鞋大底；
    (2)在下模上安装好中模，且在鞋中底成型腔中放入发泡原料粒；
    (3)在机台上固定上模，将鞋面套设在鞋楦上之后，在鞋面的底面上设置热熔胶，再将鞋楦配合地安装在上模的上腔中；
    (4)将上模、中模、下模和鞋楦合模，使鞋面的下端插入至鞋中底成型腔的发泡原料粒内；
    (5)在第一加热冷却通道、第二加热冷却通道和第三加热冷却通道中充入温度为80～200摄氏度的二氧化碳，直至鞋面的内侧压力和鞋中底成型腔内的压力均达到100个大气压，使二氧化碳穿透入发泡原料粒内；
    (6)利用二氧化碳保持对发泡原料粒加热若干分钟，并确定各材料间软化穿透溶合；
    (7)对第二加热冷却通道和第三加热冷却通道抽真空，将二氧化碳抽出，使鞋面的内侧与鞋中底成型腔之间存在压力差，同时，让发泡原料粒发泡若干秒；
    (8)发泡完成后，对第一加热冷却通道抽真空，将二氧化碳抽出；
    (9)在第一加热冷却通道、第二加热冷却通道和第三加热冷却通道内充入气化后的干冰对发泡后的发泡原料粒进行冷却；
    (10)完成流程后开模，并取出套设在鞋楦上的鞋制品。
  7. 根据权利要求6所述的鞋子的制造方法，其特征在于：
    所述的发泡原料粒为TPU、二液型PU或EVA。
  8. 根据权利要求6所述的鞋子的制造方法，其特征在于：
    在所述的步骤(6)中，利用二氧化碳保持加热发泡原料粒1～3分钟。
  9. 根据权利要求6所述的鞋子的制造方法，其特征在于：
    在所述的步骤(7)中，发泡原料粒发泡5～15秒。
  10. 根据权利要求6所述的鞋子的制造方法，其特征在于：
    在所述的步骤(9)中，充入的气化干冰的温度为-37摄氏度。
PCT/CN2022/116074 2022-04-08 2022-08-31 一种鞋子的制造模具及制造方法 WO2023193397A1 (zh)

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