CN114642296A - Safety shoes and special manufacturing mold thereof - Google Patents
Safety shoes and special manufacturing mold thereof Download PDFInfo
- Publication number
- CN114642296A CN114642296A CN202210383033.3A CN202210383033A CN114642296A CN 114642296 A CN114642296 A CN 114642296A CN 202210383033 A CN202210383033 A CN 202210383033A CN 114642296 A CN114642296 A CN 114642296A
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- CN
- China
- Prior art keywords
- shoe
- toe
- sole
- protection head
- mold
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- 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
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- 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
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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
The invention relates to the technology of manufacturing injection-molded shoes, in particular to a safety shoe and a special manufacturing mold thereof. The toe protection shoe comprises a shoe sole, a shoe upper and a toe protection head and is characterized in that the toe protection head is arranged outside the shoe head of the shoe upper, a toe protection head outer wrapping sheet is further arranged outside the toe protection head and connected with the shoe sole in an integrated injection molding mode, the lower end of the toe protection head is connected to the shoe sole in an injection molding mode, and the toe protection head outer wrapping sheet fixes the outer portion of the toe protection head on the shoe upper in an injection molding and embedding mode. Its purpose need not the fixed safety shoes of glue in order to design a toe protection head installation and can firmly be connected the special manufacturing mould of safety shoes of an organic whole with upper of a shoe, sole with toe protection head, compare with prior art, have the upper of a shoe cover shoe last convenient, the gas permeability is good, low in manufacturing cost, the shaping of toe outer wrapping sheet is convenient, appearance quality advantage such as good.
Description
Technical Field
The invention relates to the technology of injection molding shoe manufacturing, in particular to a safety shoe and a special manufacturing mold thereof.
Background
The safety shoe with safety protection function for foot is formed from sole, lining, upper and toe protection head, in which the toe protection head is placed on the shoe head between upper and front upper lining, and its manufacturing process includes (1) sewing upper, lining and insole, (2) making first shoe last cover on the upper by using general plastic shoe last, (3) brushing glue between front end of upper and front upper lining, (4) mounting toe protection head, (5) using front upper machine to make bag-holding and tightening of upper, (6) making first shoe last cover-off from plastic shoe last, (7) making second shoe last cover on the special-purpose aluminum shoe last, (8) placing the special-purpose aluminum shoe in the sole mould to make injection moulding, and (9) making second shoe last cover-off after the injection and foaming of sole are completed, and finishing the manufacturing of the safety shoe. The disadvantages are as follows:
1. the production process is complicated, and the toe protection head needs to be installed and the head of the upper part of the shoe needs to be shaped.
2. The upper of the shoe needs to be subjected to two times of delasting, the shoe cavity of the safety shoe is easy to change, and uncomfortable feeling is brought to a user.
3. The toe protection head needs to be fixed by glue when being installed, and the safety shoes contain the glue, so that the toe protection head is not environment-friendly for users and brings harm to the bodies of operators.
4. The toe protection head has low firmness of combination with the upper and the sole.
5. The manufacturing process has many working procedures, the labor for sewing the upper, the lining and the insole is very large, two sets of shoe trees need to be backed up, the upper needs to be tightened by a front upper machine, and the manufacturing cost is high.
6. The upper is generally made of leather or artificial leather, and the air permeability is poor.
Disclosure of Invention
The first purpose of the invention is to design a safety shoe for mounting a toe protection head without glue fixation.
The second purpose of the invention is to design a special manufacturing mold for safety shoes, which can firmly connect the toe protection head, the upper and the sole into a whole
In order to achieve the first object, the invention adopts the following technical solutions: a safety shoe comprises a sole, an upper and a toe protection head, and is characterized in that the toe protection head is installed outside the toe of the upper, a toe wrapping sheet is further arranged outside the toe protection head and connected with the sole in an integrated injection molding mode, the lower end of the toe protection head is connected to the sole in an injection molding mode, and the toe wrapping sheet enables the outside of the toe protection head to be fixed on the sole in an injection molding and embedding mode.
In order to facilitate shoe upper lasting, the invention omits the bag clamping and tightening process of a toe lasting machine, and the technical scheme is further provided with: the fabric of the upper is a fabric with a pore structure.
In order to improve the air permeability of the upper and reduce the manufacturing procedures and labor cost of sewing the upper, the lining and the middle sole, the technical proposal is further provided with: the upper of a shoe and shoes insole integrated into one piece, for ankle socks formula structure, the shoes insole through the injection molding material, the surface fabric pore in shoes insole with the sole fuses into an organic whole.
In order to ensure the molding integrity of the toe cap outer covering sheet in the injection molding foaming process, improve the rate of certified products and simultaneously improve the firmness of the mutual connection of the toe cap outer covering sheet, the toe protection head and the shoe upper, the technical scheme is further provided with: the toe protection head is provided with an injection molding process hole, the injection molding process hole is connected with a fixing pin in an injection molding mode, meanwhile, a toe inner wrapping sheet is formed on the inner side face of the toe protection head, and the toe inner wrapping sheet is integrated with the head of the upper through injection molding materials and fabric pores of the upper.
In order to better support the arch and the vamp and protect the heel, the technical scheme is further provided with: an inner waist supporting sheet and an outer side supporting sheet are respectively arranged at the inner waist and the outer side of the upper, the inner waist supporting sheet and the outer side supporting sheet are connected with the sole in an integrated injection molding manner, and the inner side surfaces of the inner waist supporting sheet and the outer side supporting sheet are connected in the fabric pores of the upper through injection molding materials; the heel protection plate is arranged at the heel part of the upper and is connected with the sole in an integrated injection molding way, and the inner side surface of the heel protection plate is connected into the fabric pores of the upper through injection molding materials.
In order to achieve the second object, the invention adopts the following technical solutions: a special manufacturing mold for manufacturing the safety shoe comprises a movable mold, a movable mold frame, a static mold and a static mold frame, and is characterized in that the movable mold consists of a left sub mold and a right sub mold, a toe cap outer covering piece injection molding cavity is arranged at the front end of the left mold, a pressing mechanism used for pressing a matching surface between the back of a shoe tree and the toe cap outer covering piece injection molding cavity is arranged on the movable mold frame, and the output end of the pressing mechanism is abutted to the top opening end of an aluminum shoe tree.
In order to improve the appearance quality of the toe cap wrapping sheet, the technical scheme is further provided with: and the parting surface between the left sub die and the right sub die is subjected to section parting according to a 7-shaped shape, the transverse parting surface is positioned on one side of the joint of the toe cap outer covering piece injection molding cavity and the rear cavity, and the longitudinal parting surface is subjected to section parting along the central surface of the rear cavity.
In order to improve the uniformity of pressing force between the back of a shoe tree and the injection molding cavity of the toe cap wrapping sheet and reduce the occupied space of a mechanism, the technical scheme is further provided with the following steps: the pressing mechanism comprises a handle, an eccentric rotating shaft and a shoe last board, two ends of the eccentric rotating shaft are rotatably connected with the bottom board of the upper die frame, the handle is connected with one end of the eccentric rotating shaft, an opening cylindrical hole is formed in the shoe last board, the eccentric rotating shaft is connected with the opening cylindrical hole in a matched mode, and the shoe last board is fixed to the collar end of the shoe last.
Drawings
Fig. 1 is a schematic structural diagram of the present embodiment.
Fig. 2 is a cross-sectional view of the structure of this embodiment.
Fig. 3 is a cross-sectional view taken along line a-a of fig. 1.
Fig. 4 is a schematic perspective view of the second embodiment of the present invention in a state where the movable mold and the stationary mold are not closed.
Fig. 5 is a perspective view of a second moving mold in the second embodiment.
FIG. 6 is a perspective view of a second example of the present invention in which an aluminum last (with an upper and toe guard) is placed in a movable mold.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples.
Example one
As shown in fig. 1, 2 and 3, the present embodiment includes a sole 2, an upper 1, a midsole 8 and a toe guard 6, wherein:
the upper of a shoe 1 is the surface fabric that has the pore structure, upper of a shoe 1 and shoes insole 8 integrated into one piece are the ankle socks formula structure, shoes insole 8 through the injection molding material, shoes insole's surface fabric pore with sole 2 fuses as an organic whole. The upper of a shoe adopts the structure of a sock, reduces the manufacturing process and labor cost of sewing the upper of a shoe, the lining and the insole, facilitates the shoe upper lasting, omits the bag clamping and tightening process of a toe lasting machine, and simultaneously ensures that the safety shoe has good air permeability.
The toe protection head 6 is installed outside the toe cap of the upper 1, the toe protection head 6 is further provided with a toe cap outer wrapping sheet 3 outside the toe protection head 6, the toe cap outer wrapping sheet 3 is connected with the sole 2 in an integrated injection molding mode, the lower end of the toe protection head 6 is connected to the sole 2 in an injection molding mode, and the toe cap outer wrapping sheet 3 fixes the toe protection head 6 outside in an injection molding embedding mode on the upper 1, so that the toe protection head is installed without glue for fixation.
As shown in fig. 2, the toe protection head 6 is provided with an injection molding process hole 9, the injection molding process hole 9 is injection-molded and connected with a fixing pin 10, meanwhile, a toe protection head inner side surface 6 is formed with a toe cap inner wrapping sheet 11, and the toe cap inner wrapping sheet 11 is integrated with the head of the shoe upper 1 through injection molding materials and the fabric pores of the shoe upper. The injection molding process holes 9 are arranged to ensure the molding integrity of the toe cap outer wrapping sheet in the injection molding foaming process, improve the rate of certified products, and improve the firmness of the interconnection of the toe cap outer wrapping sheet, the toe protection head, the toe cap inner wrapping sheet and the upper.
As shown in fig. 1, 2 and 3, in order to make the arch and the vamp of the safety shoe have better support and protect the heel, the inner waist and the outer side of the shoe upper 1 are respectively provided with an inner waist support sheet 4 and an outer side support sheet 7, the inner waist support sheet 4 and the outer side support sheet 7 are connected with the shoe sole 2 by integral injection molding, and the inner side surfaces of the inner waist support sheet 4 and the outer side support sheet 7 are connected in the pores of the fabric of the shoe upper 1 by injection molding; the heel protection plate 5 is arranged at the heel part of the upper 1, the heel protection plate 5 is connected with the sole 2 in an integrated injection molding mode, and the inner side surface of the heel protection plate 5 is connected into the fabric pores of the upper 1 through injection molding materials.
Example two
As shown in fig. 4, 5, and 6, the second embodiment includes a movable mold 21, a movable mold frame 24, a stationary mold 20, and a stationary mold frame 23, where the movable mold 21 is composed of a left mold 213 and a right mold 212, a toe cap outer cover injection cavity 211 is disposed at a front end of the left mold 213, a pressing mechanism for pressing a matching surface between a back of an aluminum last 25 and the toe cap outer cover injection cavity 211 is disposed on the movable mold frame 24, and an output end of the pressing mechanism abuts against a top opening end of the aluminum last 25.
As shown in fig. 5, in order to further improve the appearance quality of the injection toe cap outer covering sheet, the parting plane between the left and right sub-molds 213 and 212 is profiled in a 7-shaped manner, the transverse parting plane 215 is located at the side of the junction between the toe cap outer covering sheet injection cavity 211 and the rear cavity, and the longitudinal parting plane 214 is profiled along the central plane of the rear cavity.
As shown in fig. 6, in order to further improve the uniformity of the pressing force between the back of the shoe tree and the injection molding cavity of the toe cap outer covering piece and reduce the occupied space of the mechanism, the pressing mechanism includes a handle 31, an eccentric rotating shaft 32 and a last board 30, two ends of the eccentric rotating shaft 32 are rotatably connected with the bottom board of the movable mold base 24, the handle 31 is connected with one end of the eccentric rotating shaft 32, the last board 30 is provided with an open cylindrical hole 33, the eccentric rotating shaft 32 is connected with the open cylindrical hole 33 in a matching manner, and the last board 30 is fixed on the open end of the aluminum last 25.
When the safety shoe is manufactured, firstly, an upper 1 with a sock type structure is sleeved in an aluminum last 25, secondly, a toe protection head 6 is installed outside the toe of the upper 1, thirdly, the aluminum last 25 formed by combining the upper 1 and the toe protection head 6 is placed in a movable mold 21, a left sub mold 213 and a right sub mold 212 in the movable mold 21 clamp the aluminum last left and right, then a handle 31 is rotated, the last board 30 is driven to press the aluminum last 25 to move upwards through eccentric matching of an eccentric rotating shaft 32 and an opening cylindrical hole 33, so that the rear end of the aluminum last 25 is driven to move upwards, the front end of the aluminum last 25 moves downwards, the matching surface between the back part of the aluminum last 25 and an injection molding cavity 211 of an outer wrapping piece of the shoe head is fully pressed, fourthly, after clamping treatment in all directions of the movable mold 21 and the aluminum last 25 is completed, polyurethane sole original liquid is injected into a static mold 20, then the movable mold 21 and the static mold 20 are placed on a drying line to be heated and foamed, with the foaming expansion of the polyurethane sole stock solution, under the action of the mold closing pressure and the foaming expansion force of the polyurethane material, the polyurethane sole material fills up the sole cavity between the movable mold 21 and the stationary mold 20 and the toe cap outer covering sheet injection molding cavity 211, fifth, after the foaming is finished, the sole 2, the toe cap outer covering sheet 6, the heel protection sheet 5, the inner waist support sheet 4 and the outer side support sheet 7 are integrally formed and connected, then the mold is opened, the last is removed, and the safety shoe manufacturing is finished.
In conclusion, compared with the prior art, the invention has the following beneficial effects:
1. the shoe upper is convenient to sleeve the shoe last, the bag clamping and tightening process of a front upper machine is omitted, and meanwhile, the manufacturing process and labor cost of sewing the shoe upper, the lining and the insole are reduced.
2. The heel protection sheet has simple manufacturing process and low material cost. The heel protection sheet and the sole are integrally formed and connected, so that the working procedure of heat release glue melting or chemical sheets between the heel part of the heel and the heel part lining is reduced, and the material cost is reduced by integrally forming the heel protection sheet by sole materials.
3. The safety shoes have good air permeability, better arch and vamp support and heel protection on the basis of meeting the national safety shoe standard.
4. The upper only needs to be put off the last once, the shoe cavity is not easy to change, and the wearing comfort is strong.
5. The toe cap outer covering sheet has no parting line, good appearance quality and high molding integrity.
5. The firmness of the connection of the toe cap outer wrapping sheet, the toe protecting head and the shoe upper is strong.
6. The safety shoes do not contain glue, and have good environmental protection.
7. The toe cap wrapping sheet is convenient to form, and a lot of cost is saved. By adopting the structure and the special die, the toe cap outer wrapping sheet and the sole are simultaneously formed at one time, the toe cap outer wrapping sheet is very convenient, the toe cap front is taken as the inner lining of the toe protection head, the toe cap outer wrapping sheet of the polyurethane one-time forming sheet is taken as the toe protection head outer wrapping sheet, and the cost of upper surface leather and the cost of a vehicle upper are saved.
Claims (8)
1. The utility model provides a safety shoe, it contains sole (2), upper of a shoe (1), toe protection head (6), its characterized in that toe protection head (6) are installed the toe cap outside of upper of a shoe (1) the outside of toe protection head (6) still is equipped with toe cap outsourcing piece (3), toe cap outsourcing piece (3) with sole (2) integration injection moulding connects, the lower extreme of toe protection head (6) is moulded plastics and is connected on sole (2), toe cap outsourcing piece (3) will toe protection head (6) outside gomphosis of moulding plastics is fixed on upper of a shoe (1).
2. A safety shoe as claimed in claim 1, characterised in that said upper (1) is a fabric with a fine pore structure.
3. A safety shoe as claimed in claim 2, characterised in that said upper (1) is formed integrally with said mid-sole (8) in a sock-type configuration, said mid-sole (8) being incorporated into said sole (2) by means of injection moulding, the fabric pores of the mid-sole.
4. A safety shoe as claimed in claim 3, characterized in that said toe guard (6) is provided with injection-molded holes (9), said injection-molded holes (9) being provided with fastening pins (10) for injection-molding, and said toe guard (6) being provided at its inner side with toe cap inserts (11), said toe cap inserts (11) being integrated with said upper (1) by means of injection-molded material, upper shell pores.
5. The safety shoe as claimed in claim 4, characterized in that an inner waist supporting sheet (4) and an outer side supporting sheet (7) are respectively arranged at the inner waist and the outer side of the upper (1), the inner waist supporting sheet (4) and the outer side supporting sheet (7) are integrally connected with the sole (2) by injection molding, and the inner side surfaces of the inner waist supporting sheet (4) and the outer side supporting sheet (7) are connected in the pores of the fabric of the upper (1) by injection molding materials; the heel protection plate is characterized in that a heel protection plate (5) is arranged at the heel part of the upper (1), the heel protection plate (5) is connected with the sole (2) in an integrated injection molding mode, and the inner side surface of the heel protection plate (5) is connected into a fabric pore of the upper (1) through injection molding materials.
6. A special manufacturing mold for manufacturing the safety shoe as claimed in claim 1, which comprises a movable mold (21), a movable mold frame (24), a static mold (20) and a static mold frame (23), wherein the movable mold (21) is composed of a left sub mold (213) and a right sub mold (212), a toe cap outer cover injection mold cavity (211) is arranged at the front end of the left mold (213), a pressing mechanism for pressing a matching surface between the back of an aluminum last (25) and the toe cap outer cover injection mold cavity (211) is arranged on the movable mold frame (24), and the output end of the pressing mechanism is pressed against the opening end of the aluminum last (25).
7. The special manufacturing mold according to claim 6, characterized in that the parting plane between the left and right sub-molds (213), (212) is profiled in 7-shape, the transverse parting plane (215) is located at the side of the junction of the toe cap outer covering sheet injection cavity (211) and the rear cavity, and the longitudinal parting plane (214) is profiled along the center plane of the rear cavity.
8. The special manufacturing mold according to claim 7, wherein the pressing mechanism comprises a handle (31), an eccentric rotating shaft (32), and a last board (30), both ends of the eccentric rotating shaft (32) are rotatably connected with the bottom plate of the movable mold frame (24), the handle (31) is connected with one end of the eccentric rotating shaft (32), the last board (30) is provided with an open cylindrical hole (33), the eccentric rotating shaft (32) and the open cylindrical hole (33) are cooperatively connected, and the last board (30) is fixed on the opening end of the aluminum last (25).
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210383033.3A CN114642296A (en) | 2022-03-28 | 2022-03-28 | Safety shoes and special manufacturing mold thereof |
| PCT/CN2022/116796 WO2023184859A1 (en) | 2022-03-28 | 2022-09-02 | Safety shoe and special manufacturing mold therefor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210383033.3A CN114642296A (en) | 2022-03-28 | 2022-03-28 | Safety shoes and special manufacturing mold thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114642296A true CN114642296A (en) | 2022-06-21 |
Family
ID=81997175
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210383033.3A Pending CN114642296A (en) | 2022-03-28 | 2022-03-28 | Safety shoes and special manufacturing mold thereof |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN114642296A (en) |
| WO (1) | WO2023184859A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023184859A1 (en) * | 2022-03-28 | 2023-10-05 | 温州戴亦科技有限公司 | Safety shoe and special manufacturing mold therefor |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117584394A (en) * | 2024-01-18 | 2024-02-23 | 晋江市匠成模具科技有限公司 | Three-color three-density shoe, shoe making mold and shoe making method |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1176881A (en) * | 1967-01-11 | 1970-01-07 | Desma Werke Gmbh | Footwear |
| US5736167A (en) * | 1997-02-27 | 1998-04-07 | Chang; Hui Hwa | Mold device for making safety shoe |
| CN2472542Y (en) * | 2001-04-28 | 2002-01-23 | 晋江市万宝利鞋塑制品有限公司 | Labour and protective safety shoes for preventing piercing and protecting toe |
| DE102010049298A1 (en) * | 2010-10-22 | 2012-04-26 | Fa. Mayer Gbr (Vertretungsberechtigte Gesellschafter: Herr Helmut Mayer, 88045 Friedrichshafen) | Safety shoe with protective cap |
| CN114642296A (en) * | 2022-03-28 | 2022-06-21 | 温州戴亦科技有限公司 | Safety shoes and special manufacturing mold thereof |
| CN217407927U (en) * | 2022-04-06 | 2022-09-13 | 温州戴亦科技有限公司 | Sock type safety shoe |
| CN217407926U (en) * | 2022-04-06 | 2022-09-13 | 温州戴亦科技有限公司 | Prevent playing injection moulding shoes with tip protection |
-
2022
- 2022-03-28 CN CN202210383033.3A patent/CN114642296A/en active Pending
- 2022-09-02 WO PCT/CN2022/116796 patent/WO2023184859A1/en unknown
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023184859A1 (en) * | 2022-03-28 | 2023-10-05 | 温州戴亦科技有限公司 | Safety shoe and special manufacturing mold therefor |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2023184859A1 (en) | 2023-10-05 |
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