WO2023184859A1 - 一种安全鞋及其专用制造模具 - Google Patents

一种安全鞋及其专用制造模具 Download PDF

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Publication number
WO2023184859A1
WO2023184859A1 PCT/CN2022/116796 CN2022116796W WO2023184859A1 WO 2023184859 A1 WO2023184859 A1 WO 2023184859A1 CN 2022116796 W CN2022116796 W CN 2022116796W WO 2023184859 A1 WO2023184859 A1 WO 2023184859A1
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WO
WIPO (PCT)
Prior art keywords
toe
injection molding
sole
shoe
last
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PCT/CN2022/116796
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English (en)
French (fr)
Inventor
戴力
戴源慧
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温州戴亦科技有限公司
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Publication of WO2023184859A1 publication Critical patent/WO2023184859A1/zh

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    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B3/00—Footwear characterised by the shape or the use
    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B13/00—Soles; Sole-and-heel integral units
    • A43B13/02—Soles; Sole-and-heel integral units characterised by the material
    • A43B13/12—Soles with several layers of different materials
    • A43B13/125—Soles with several layers of different materials characterised by the midsole or middle layer
    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B23/00—Uppers; Boot legs; Stiffeners; Other single parts of footwear
    • A43B23/02—Uppers; Boot legs
    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B23/00—Uppers; Boot legs; Stiffeners; Other single parts of footwear
    • A43B23/08—Heel stiffeners; Toe stiffeners
    • A43B23/081—Toe stiffeners
    • A43B23/086—Toe stiffeners made of impregnated fabrics, plastics or the like
    • A43B23/087—Toe stiffeners made of impregnated fabrics, plastics or the like made of plastics
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D35/00—Producing footwear
    • B29D35/0009—Producing footwear by injection moulding; Apparatus therefor
    • B29D35/0018—Moulds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D35/00—Producing footwear
    • B29D35/06—Producing footwear having soles or heels formed and joined on to preformed uppers using a moulding technique, e.g. by injection moulding, pressing and vulcanising
    • B29D35/061—Producing footwear having soles or heels formed and joined on to preformed uppers using a moulding technique, e.g. by injection moulding, pressing and vulcanising by injection moulding
    • B29D35/062—Producing footwear having soles or heels formed and joined on to preformed uppers using a moulding technique, e.g. by injection moulding, pressing and vulcanising by injection moulding using means to bond the moulding material to the preformed uppers

Definitions

  • the present invention relates to injection molding shoe manufacturing technology, in particular to a safety shoe and its special manufacturing mold.
  • Safety shoes are shoes that have a safety protection effect on the feet. They are composed of soles, linings, uppers, toe protection heads to prevent punctures and other components.
  • the toe protection heads are set between the upper and the front lining of the shoes.
  • the manufacturing process includes (1) sewing of the upper, lining, and midsole, (2) lasting the upper for the first time on an ordinary plastic last, (3) brushing glue between the front end of the upper and the front lining , (4) Install the toe protective head, (5) Use the front upper machine to clamp and tighten the upper, (6) Remove the shaped combined upper from the plastic shoe last for the first time, (7) Remove the last The combined shoe upper with toe protection head installed is lasted for the second time on a special aluminum last. (8) Put the special aluminum last into the sole mold for sole injection molding. (9) After the sole injection foaming is completed, the second time After taking off the last, the production of safety shoes is completed. Its shortcomings include the following aspects:
  • the upper needs to be unlasted twice, and the shoe cavity of the safety shoes is prone to change, causing discomfort to the user.
  • the toe protection head is not firmly combined with the upper and sole.
  • the uppers are generally made of leather or artificial leather, which has poor air permeability.
  • the first object of the present invention is to design a safety shoe in which the toe protector is installed without the need for glue fixation.
  • the second object of the present invention is to design a special manufacturing mold for safety shoes that can firmly connect the toe protection head with the upper and sole.
  • a safety shoe which includes a sole, an upper, and a toe protective head, which is characterized in that the toe protective head is installed outside the toe of the shoe upper, There is also a toe outer sheet on the outside of the toe protective head.
  • the toe outer sheet is integrally connected to the sole by injection molding.
  • the lower end of the toe protective head is injection molded and connected to the sole.
  • the outer sheet of the toe cap is injection-molded and fixed to the outer part of the toe protective head on the shoe upper.
  • the present invention omits the tightening process of the front upper machine and further configures the technical solution: the fabric of the shoe upper is a fabric with a pore structure.
  • the present invention further configures the technical solution: the shoe upper and the shoe midsole are integrally formed into a sock-type structure. , the shoe midsole is integrated with the shoe sole through the injection of plastic and the pores of the shoe midsole fabric.
  • the technical solution is further configured.
  • the toe protective head is provided with an injection molding process hole, and a connection fixing pin is injection molded on the injection molding process hole.
  • a toe inner wrapping piece is formed on the inner side of the toe protective head.
  • the toe inner wrapping piece is Through the injection of plastic, the fabric pores of the shoe upper are integrated with the head of the shoe upper.
  • the present invention further arranges the technical solution: the inner waist and outer side of the upper are respectively provided with an inner waist support piece and an outer support. piece, the inner waist support piece and the outer support piece are integrally injection-molded and connected to the sole, and the inner sides of the inner waist support piece and the outer support piece are connected to the fabric fineness of the shoe upper through injection molding.
  • a heel protection piece is provided at the heel of the shoe upper, and the heel protection piece is integrally connected to the sole by injection molding.
  • the inner side of the heel protection piece is connected to the fabric fineness of the shoe upper through injection plastic. hole.
  • a special manufacturing mold for manufacturing the safety shoes which includes a movable mold, a movable mold frame, a static mold, and a static mold frame, and is characterized in that the movable mold It is composed of left and right sub-molds.
  • the movable mold It is composed of left and right sub-molds.
  • the present invention further arranges the technical solution: the parting surface between the left and right sub-molds is sectioned in a "7" shape, and the transverse parting surface is located at On one side of the connection point between the injection molding cavity of the toe outer sheet and the rear cavity, the longitudinal parting surface is parted along the cross section of the center plane of the rear cavity.
  • the pressing mechanism includes a handle, Eccentric rotating shaft and last plate. Both ends of the eccentric rotating shaft are rotationally connected to the bottom plate of the upper mold frame.
  • the handle is connected to one end of the eccentric rotating shaft.
  • An open cylindrical hole is provided on the last plate. The eccentric rotating shaft and the open cylindrical hole are connected to each other, and the last head plate is fixed on the opening end of the shoe last.
  • Figure 1 is a schematic structural diagram of this embodiment.
  • Figure 2 is a structural cross-sectional view of this embodiment.
  • Figure 3 is a cross-sectional view along A-A in Figure 1.
  • Figure 4 is a schematic three-dimensional view of the movable and static molds in the unclosed state of the second embodiment.
  • Figure 5 is a three-dimensional schematic diagram of the movable mold in the second embodiment.
  • Figure 6 is a three-dimensional view of the aluminum last (with upper and toe protector attached) placed in the movable mold in the second embodiment.
  • the first embodiment includes a shoe sole 2, a shoe upper 1, a shoe midsole 8, and a toe protective head 6, wherein:
  • the upper 1 is made of fabric with a pore structure.
  • the upper 1 and the midsole 8 are integrally formed and have a sock-like structure.
  • the midsole 8 is made of plastic injection and the pores of the midsole fabric are connected to the sole. 2 blended into one.
  • the upper adopts a sock-type structure, which reduces the manufacturing process and labor costs of sewing the upper, lining and midsole, facilitates the lasting of the upper, and omits the process of clamping and tightening the front upper machine. At the same time, the safety shoes have good breathability.
  • the toe protective head 6 is installed on the outside of the toe of the shoe upper 1, and a toe outer sheet 3 is also provided outside the toe protective head 6.
  • the toe outer sheet 3 is connected with the sole 2 Integrated injection molding connection, the lower end of the toe protective head 6 is injection molded and connected to the shoe sole 2, and the toe outer sheet 3 embeds the outer part of the toe protective head 6 on the upper 1 by injection molding. , so that the toe protection head can be installed without glue fixation.
  • the toe protection head 6 is provided with an injection molding process hole 9, and a connection fixing pin 10 is injection molded on the injection molding process hole 9. At the same time, a connection fixing pin 10 is formed on the inner side of the toe protection head 6.
  • the toe inner wrapping piece 11 is integrated with the head of the shoe upper 1 through injection molding and the pores of the shoe upper fabric.
  • the inner waist and outer sides of the upper 1 are respectively provided with The inner waist support piece 4 and the outer support piece 7 are integrally injection-molded and connected to the shoe sole 2.
  • the inner waist support piece 4 and the outer support piece 7 are integrally injection molded.
  • the inner side of the shoe upper 1 is connected to the pores of the fabric of the shoe upper 1 through injection molding; a heel protection piece 5 is provided at the heel of the shoe upper 1, and the heel protection piece 5 is integrally connected to the sole 2 by injection molding.
  • the inner side of the heel protection piece 5 is connected to the pores of the fabric of the shoe upper 1 through injection molding.
  • the second embodiment includes a movable mold 21, a movable mold frame 24, a static mold 20, and a static mold frame 23.
  • the movable mold 21 is composed of left and right sub-molds 213 and 212.
  • a toe outer sheet injection molding cavity 211 is provided at the front end of the left mold 213, and a space between the back of the aluminum last 25 and the toe outer sheet injection molding cavity 211 is provided on the movable mold frame 24
  • the output end of the pressing mechanism of the mating surface is pressed against the opening end of the aluminum last 25 .
  • the parting surface between the left and right sub-molds 213 and 212 is sectioned in a "7" shape, and the transverse parting surface is 215 is located on one side of the connection between the toe outer sheet injection molding cavity 211 and the rear cavity, and the longitudinal parting surface 214 is parted along the center plane of the rear cavity.
  • the pressing mechanism includes a handle 31 and an eccentric rotating shaft. 32.
  • Last plate 30 the two ends of the eccentric shaft 32 are rotationally connected to the bottom plate of the movable mold frame 24, the handle 31 is connected to one end of the eccentric shaft 32, and an opening is provided on the last plate 30 Cylindrical hole 33, the eccentric rotating shaft 32 and the open cylindrical hole 33 are connected to each other, and the last head plate 30 is fixed on the common end of the aluminum last 25.
  • the upper 1 of the sock-type structure is inserted into the aluminum last 25.
  • the toe protective head 6 is installed on the outside of the toe of the upper 1.
  • the upper 1, the toe protector 6 is installed on the outside of the toe of the upper 1.
  • the aluminum last 25 assembled with the toe protection head 6 is put into the movable mold 21.
  • the left and right sub-molds 213 and 212 in the movable mold 21 clamp the aluminum last left and right, and then the handle 31 is rotated to connect the opening with the eccentric shaft 32.
  • the eccentric fit of the cylindrical hole 33 drives the last head plate 30 to press the aluminum last 25 and move upward, thereby driving the rear end of the aluminum last 25 to move upward, and the front end of the aluminum last 25 to move downward, so that the back of the aluminum last 25 is in contact with the toe cap.
  • the mating surface between the outer shell injection molding cavities 211 is fully compressed.
  • the polyurethane sole liquid foams and expands under the action of the mold closing pressure and the foaming expansion force of the polyurethane material, the polyurethane sole material will move into the dynamic mold 21
  • the sole cavity and the toe outer sheet injection molding cavity 211 between the static mold 20 are fully filled.
  • the sole 2 and the toe outer sheet 6, the heel protection sheet 5, and the inner waist support sheet 4 It is integrally formed and connected with the outer support piece 7, and then the mold is opened and lasted, and the safety shoes are manufactured.
  • the present invention has the following beneficial effects compared with the prior art:
  • the shoe upper is lasted easily, eliminating the process of clamping and tightening the front shoe machine, and at the same time reducing the manufacturing process and labor costs of sewing the upper, lining and midsole.
  • the manufacturing process of the heel protection sheet is simple and the material cost is low. Since the heel protection piece is integrated with the sole, the process of placing hot melt glue or chemical sheets between the heel and the back lining is reduced. The heel protection piece is integrally formed using the sole material, reducing material costs.
  • safety shoes On the basis of meeting the national safety shoe standards, safety shoes not only have good breathability, but also have good arch and upper support, as well as heel protection.
  • the shoe upper only needs to be unlasted once, the shoe cavity is not easy to change, and the wearing comfort is strong.
  • the outer cover of the toe is easy to form and saves a lot of costs.
  • the toe cap outer sheet and the sole are molded at the same time, which is very convenient.
  • the front of the shoe upper is used as the inside of the toe protector, and the toe cap outer sheet of the polyurethane one-time molded piece is used as the toe protector.
  • the outsourcing sheet saves the cost of upper leather and upper.

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

Abstract

一种安全鞋及其专用制造模具，包含鞋底(2)、鞋帮(1)、足趾保护头(6)，足趾保护头(6)安装在鞋帮(1)的鞋头外部，在足趾保护头(6)的外部还设有鞋头外包片(3)，鞋头外包片(3)与鞋底(2)一体化注塑成型连接，足趾保护头(6)的下端注塑连接在鞋底(2)上，鞋头外包片(3)将足趾保护头(6)外部注塑嵌合固定在鞋帮(1)上。安全鞋的足趾保护头(6)安装无需胶水固定，安全鞋专用制造模具能够将足趾保护头(6)与鞋帮(1)、鞋底(2)牢固连接于一体，与现有技术相比，具有鞋帮(1)套楦方便，透气性好，制造成本低，鞋头外包片(3)成型方便、外观质量好等优点。

Description

一种安全鞋及其专用制造模具 技术领域
本发明涉及注塑鞋制造技术，特别是一种安全鞋及其专用制造模具。
背景技术
安全鞋是一种对足部有安全防护作用的鞋，它由鞋底、衬里、鞋帮、足趾保护头防刺穿等部件构成，其中足趾保护头设置在鞋帮与前帮衬里之间的鞋头上，其制造工艺包含(1)鞋帮及衬里、中底缝制，(2)鞋帮在普通塑料鞋楦进行第一次套楦，(3)在鞋帮的前端与前帮衬里之间刷胶，(4)安装足趾保护头，(5)采用前帮机对鞋帮进行夹包绷紧，(6)将定型好的组合鞋帮从塑料鞋楦上进行第一次脱楦，(7)将安装好足趾保护头的组合鞋帮在专用铝楦上进行第二次套楦，(8)将专用铝楦放入鞋底模具中进行鞋底注塑，(9)鞋底注塑发泡完成后，进行第二次脱楦，安全鞋制造完成。其不足之处有以下几方面：
1、生产工艺繁琐，需要进行足趾保护头的安装和鞋帮面头部的定型。
2、鞋帮需要经过两次脱楦，安全鞋的鞋腔易发生变化，给使用者穿着带来不舒适感觉。
3、足趾保护头安装需要用胶水进行固定，安全鞋上含有胶水，对使用者不环保，同时给操作者身体带来危害。
4、足趾保护头与鞋帮、鞋底结合牢固度不强。
5、制造过程工序多，鞋帮及衬里、中底缝制劳动用工非常大，需要备份两套鞋楦，鞋帮需要用前帮机进行绷紧，制造成本高。
6、鞋帮一般采用皮革或人造革，透气性差。
发明内容
本发明的第一目的是设计一种足趾保护头安装无需胶水固定的安全鞋。
本发明的第二目的是设计一种能够将足趾保护头与鞋帮、鞋底牢固连接于一体的安全鞋专用制造模具
为了达到上述第一目的，本发明采用以下技术解决方案：一种安全鞋，它包含鞋底、鞋帮、足趾保护头，其特征在于所述足趾保护头安装在所述鞋帮的鞋头外部，在所述所足趾保护头的外部还设有鞋头外包片，所述鞋头外包片与所述鞋底一体化注塑成型连接，所述足趾保护头的下端注塑连接在所述鞋底上，所述鞋头外包片将所述足趾保护头外部注塑嵌合固定在所 述鞋帮上。
本发明为了方便鞋帮套楦，省略前帮机夹包绷紧工序，对所述技术方案进行进一步设置：所述鞋帮的面料为具有细孔结构的面料。
本发明为了提高鞋帮的透气性，同时减少鞋帮、衬里及中底缝制的制造工序及劳动用工成本，对所述技术方案进行进一步设置：所述鞋帮与鞋中底一体成形，为袜套式结构，所述鞋中底通过注塑料、鞋中底的面料细孔与所述鞋底融为一体。
本发明为了保证鞋头外包片在注塑发泡过程中的成型完整度，提高正品率，同时提高鞋头外包片、足趾保护头、鞋帮相互连接的牢固度，对所述技术方案进行进一步设置：在所述足趾保护头上设有注塑工艺孔，在所述注塑工艺孔上注塑连接固定销，同时，在所述足趾保护头内侧面形成鞋头内包片，所述鞋头内包片通过注塑料、鞋帮的面料细孔与所述鞋帮的头部融为一体。
本发明为了使脚弓和鞋面有较好支撑，后跟有保护，鞋子不掉脚，对所述技术方案进行进一步设置：所述鞋帮的内腰和外侧分别设有内腰支撑片和外侧支撑片，所述内腰支撑片和所述外侧支撑片与所述鞋底一体化注塑成型连接，所述内腰支撑片和所述外侧支撑片的内侧面通过注塑料连接在所述鞋帮的面料细孔中；在所述鞋帮的后跟部设有后跟保护片，所述后跟保护片与所述鞋底一体化注塑成型连接，所述后跟保护片的内侧面通过注塑料连接在所述鞋帮的面料细孔中。
为了达到上述第二目的，本发明采用以下技术解决方案：一种制造所述安全鞋的专用制造模具，它包含动模、动模架、静模、静模架，其特征在于所述动模由左、右子模构成，在所述左模的前端设有鞋头外包片注塑型腔，在所述动模架上设有用于压紧鞋楦背部与所述鞋头外包片注塑型腔之间配合面的压紧机构，所述压紧机构的输出端顶在所述铝楦的统口端上。
本发明为了提高鞋头外包片的外观质量，对所述技术方案进行进一步设置：所述左、右子模之间的分型面按“7”字型进行剖面分型，横向分型面位于所述鞋头外包片注塑型腔与后部型腔连接处一侧，纵向分型面沿后部型腔中心面剖面分型。
本发明为了提高鞋楦背部与所述鞋头外包片注塑型腔之间压紧力的均匀性，同时，减少机构空间占用，对所述技术方案进行进一步设置：所述压紧机构包含手柄、偏心转轴、楦头板，所述偏心转轴两端与所述上模架的底板转动连接，所述手柄与所述偏心转轴一端连接，在所述楦头板上设有开口圆柱孔，所述偏心转轴与所述开口圆柱孔相互配合连接，所述楦头板固定在所述鞋楦的统口端上。
附图说明
图1为本实施例一结构示意图。
图2为本实施例一结构剖面图。
图3为图1中沿A-A剖面图。
图4为本实施例二动、静模未合模状态的立体示意图。
图5为本实施例二中动模的立体示意图。
图6为本实施例二中铝楦(套上鞋帮、足趾保护头)放入动模中立体图。
具体实施方式
下面结合附图和实施例对本发明作进一步的详细说明。
实施例一
如图1、图2、图3所示，本实施例一包含鞋底2、鞋帮1、鞋中底8和足趾保护头6，其中：
所述鞋帮1为具有细孔结构的面料，所述鞋帮1与鞋中底8一体成形，为袜套式结构，所述鞋中底8通过注塑料、鞋中底的面料细孔与所述鞋底2融为一体。鞋帮采用袜套式结构，减少鞋帮、衬里及中底缝制的制造工序及劳动用工成本，方便鞋帮套楦，省略前帮机夹包绷紧工序，同时使安全鞋具有良好的透气性。
所述足趾保护头6安装在所述鞋帮1的鞋头外部，在所述所足趾保护头6的外部还设有鞋头外包片3，所述鞋头外包片3与所述鞋底2一体化注塑成型连接，所述足趾保护头6的下端注塑连接在所述鞋底2上，所述鞋头外包片3将所述足趾保护头6外部注塑嵌合固定在所述鞋帮1上，使所述足趾保护头安装无需胶水固定。
再如图2所示，在所述足趾保护头6上设有注塑工艺孔9，在所述注塑工艺孔9上注塑连接固定销10，同时，在所述足趾保护头6内侧面形成鞋头内包片11，所述鞋头内包片11通过注塑料、鞋帮的面料细孔与所述鞋帮1的头部融为一体。通过设置注塑工艺孔9保证鞋头外包片在注塑发泡过程中的成型完整度，提高正品率，同时提高鞋头外包片、足趾保护头、鞋头内包片、鞋帮相互连接的牢固度。
再如图1、图2、图3所示，为了使安全鞋的脚弓和鞋面有较好支撑，后跟有保护，鞋子不掉脚，在所述鞋帮1的内腰和外侧分别设有内腰支撑片4和外侧支撑片7，所述内腰支撑片4和所述外侧支撑片7与所述鞋底2一体化注塑成型连接，所述内腰支撑片4和所述外侧支撑片7的内侧面通过注塑料连接在所述鞋帮1的面料细孔中；在所述鞋帮1的后跟部设有后跟保护片5，所述后跟保护片5与所述鞋底2一体化注塑成型连接，所 述后跟保护片5的内侧面通过注塑料连接在所述鞋帮1的面料细孔中。
实施例二
如图4、图5、图6所示，本实施例二包含动模21、动模架24、静模20、静模架23，所述动模21由左、右子模213、212构成，在所述左模213的前端设有鞋头外包片注塑型腔211，在所述动模架24上设有用于压紧铝楦25背部与所述鞋头外包片注塑型腔211之间配合面的压紧机构，所述压紧机构的输出端顶在所述铝楦25的统口端上。
再如图5所示，为了进一步提高注塑鞋头外包片的外观质量，所述左、右子模213、212之间的分型面按“7”字型进行剖面分型，横向分型面215位于所述鞋头外包片注塑型腔211与后部型腔连接处一侧，纵向分型面214沿后部型腔中心面剖面分型。
再如图6所示，为了进一步提高鞋楦背部与所述鞋头外包片注塑型腔之间压紧力的均匀性，同时，减少机构空间占用，所述压紧机构包含手柄31、偏心转轴32、楦头板30，所述偏心转轴32两端与所述动模架24的底板转动连接，所述手柄31与所述偏心转轴32一端连接，在所述楦头板30上设有开口圆柱孔33，所述偏心转轴32与所述开口圆柱孔33相互配合连接，所述楦头板30固定在所述铝楦25的统口端上。
安全鞋制造时，第一步，将袜套式结构的鞋帮1套进铝楦25，第二步，将足趾保护头6安装在鞋帮1的鞋头外部，第三步，将鞋帮1、足趾保护头6组合好的铝楦25放进动模21中，动模21中的左、右子模213、212将铝楦左、右夹紧，然后转动手柄31，通过偏心转轴32与开口圆柱孔33的偏心配合，带动楦头板30压紧铝楦25向上移动，从而带动铝楦25的后端向上移动，铝楦25的前端向下移动，使铝楦25背部与所述鞋头外包片注塑型腔211之间的配合面得到充分的压紧，第四步，动模21与铝楦25各个方向夹紧处理完成后，在静模20中注入聚氨酯鞋底原液，然后将动模21与静模20合模，放入烘干流水线上加热发泡，随着聚氨酯鞋底原液的发泡膨胀，在合模压力和聚氨酯材料发泡膨胀力的作用下，聚氨酯鞋底材料将动模21与静模20之间的鞋底型腔和鞋头外包片注塑型腔211充实填满，第五，发泡完成后，鞋底2与鞋头外包片6、后跟保护片5、内腰支撑片4和外侧支撑片7一体化成型连接，然后开模，脱楦，安全鞋制造完成。
综上所述，本发明与现有技术相比具有的有益效果：
1、鞋帮套楦方便，省略前帮机夹包绷紧工序，同时减少鞋帮、衬里及中底缝制的制造工序及劳动用工成本。
2、后跟保护片制造工序简单，材料成本低。由于后跟保护片与鞋底一体化成型连 接，减少了后跟的后帮与后帮衬里中间放热熔胶或者化学片的工序，利用鞋底材料一体成型后跟保护片，减少材料成本。
3、安全鞋在符合国家安全鞋的标准基础上，既具有良好的透气性，又具有较好的脚弓和鞋面支撑，以及后跟保护。
4、鞋帮只需一次脱楦，鞋腔不易发生变化，穿着舒适感强。
5、鞋头外包片无分型线，外观质量好，成型完整度高。
5、鞋头外包片、足趾保护头、鞋帮相互连接的牢固度强。
6、安全鞋不含胶水，环保性好。
7、鞋头外包片成型方便，节省许多成本。采用本发明的结构和专用模具，鞋头外包片与鞋底同时一次成型，非常方便，同时把鞋帮前头作为足趾保护头的内里，把聚氨酯一次成型片的鞋头外包片当作足趾保护头外包片，节省了帮面皮料与车帮成本。

Claims (8)

  1. 一种安全鞋，它包含鞋底(2)、鞋帮(1)、足趾保护头(6)，其特征在于所述足趾保护头(6)安装在所述鞋帮(1)的鞋头外部，在所述所足趾保护头(6)的外部还设有鞋头外包片(3)，所述鞋头外包片(3)与所述鞋底(2)一体化注塑成型连接，所述足趾保护头(6)的下端注塑连接在所述鞋底(2)上，所述鞋头外包片(3)将所述足趾保护头(6)外部注塑嵌合固定在所述鞋帮(1)上。
  2. 根据权利要求1所述的一种安全鞋，其特征在于所述鞋帮(1)的面料为具有细孔结构的面料。
  3. 根据权利要求2所述的一种安全鞋，其特征在于所述鞋帮(1)与鞋中底(8)一体成形，为袜套式结构，所述鞋中底(8)通过注塑料、鞋中底的面料细孔与所述鞋底(2)融为一体。
  4. 根据权利要求3所述的一种安全鞋，其特征在于在所述足趾保护头(6)上设有注塑工艺孔(9)，在所述注塑工艺孔(9)上注塑连接固定销(10)，同时，在所述足趾保护头(6)内侧面形成鞋头内包片(11)，所述鞋头内包片(11)通过注塑料、鞋帮的面料细孔与所述鞋帮(1)的头部融为一体。
  5. 根据权利要求4所述的一种安全鞋，其特征在于在所述鞋帮(1)的内腰和外侧分别设有内腰支撑片(4)和外侧支撑片(7)，所述内腰支撑片(4)和所述外侧支撑片(7)与所述鞋底(2)一体化注塑成型连接，所述内腰支撑片(4)和所述外侧支撑片(7)的内侧面通过注塑料连接在所述鞋帮(1)的面料细孔中；在所述鞋帮(1)的后跟部设有后跟保护片(5)，所述后跟保护片(5)与所述鞋底(2)一体化注塑成型连接，所述后跟保护片(5)的内侧面通过注塑料连接在所述鞋帮(1)的面料细孔中。
  6. 一种制造权利要求1所述安全鞋的专用制造模具，它包含动模(21)、动模架(24)、静模(20)、静模架(23)，其特征在于所述动模(21)由左、右子模(213)、(212)构成，在所述左模(213)的前端设有鞋头外包片注塑型腔(211)，在所述动模架(24)上设有用于压紧铝楦(25)背部与所述鞋头外包片注塑型腔(211)之间配合面的压紧机构，所述压紧机构的输出端顶在所述铝楦(25)的统口端上。
  7. 根据权利要求6所述的专用制造模具，其特征在于所述左、右子模(213)、(212)之间的分型面按“7”字型进行剖面分型，横向分型面(215)位于所述鞋头外包片注塑型腔(211)与后部型腔连接处一侧，纵向分型面(214)沿后部型腔中心面剖面分型。
  8. 根据权利要求7所述的专用制造模具，其特征在于所述压紧机构包含手柄(31)、偏心转轴(32)、楦头板(30)，所述偏心转轴(32)两端与所述动模架(24)的底板转动连接，所述手柄(31)与所述偏心转轴(32)一端连接，在所述楦头板(30)上设有开口圆柱孔(33)，所述偏心转轴(32)与所述开口圆柱孔(33)相互配合连接，所述楦头板(30)固定在所述铝楦(25)的统口端上。
PCT/CN2022/116796 2022-03-28 2022-09-02 一种安全鞋及其专用制造模具 WO2023184859A1 (zh)

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