WO2023104187A1

WO2023104187A1 - Sheet-shaped combined mold attracted by magnetic force and manufacturing method therefor

Info

Publication number: WO2023104187A1
Application number: PCT/CN2022/137929
Authority: WO
Inventors: 苏少虹
Original assignee: 苏少虹
Priority date: 2021-12-10
Filing date: 2022-12-09
Publication date: 2023-06-15
Also published as: CN114043648A

Abstract

The present invention relates to a sheet-shaped combined mold attracted by a magnetic force. The mold comprises a mold body, wherein a mold cavity is formed in the mold body; the mold body comprises a plurality of magnetic sheet bodies; each magnetic sheet body is provided with a sub-mold cavity; the magnetic sheet bodies are combined together by means of magnetic attraction; and the sub-mold cavities of the magnetic sheet bodies are spliced into the mold cavity. After the technical solution of the present invention is used, the mold body is formed by splicing the magnetic sheet bodies in a magnetic attraction manner, and when the mold body is assembled, magnetic sheet bodies having different numbers, different shapes, different structures and different thicknesses and compounded by different materials can be selected as required, thereby quickly forming molds of different specifications, improving the production efficiency of the mold, and reducing the production cost of the mold. Secondly, after the mold is machined and formed for the first time, the mold can be quickly modified and maintained and repaired at a later time at a low cost by means of simple secondary machining. Further provided in the present invention is a manufacturing method for the magnetic sheet type combined mold.

Description

A sheet combined mold utilizing magnetic force and its manufacturing method

technical field

The invention relates to a sheet-shaped combined mold which utilizes magnetic attraction and a manufacturing method thereof, belonging to the field of molds.

Background technique

Mold is known as the "mother of industry", which refers to the sub-molds and tools used in industrial production to obtain products by injection molding, blow molding, blister, extrusion, die-casting or forging. In short, tools for making shaped objects. At present, there are various manufacturing methods for molds. Some mold cavities are processed by subtractive methods such as milling, cutting, turning and grinding, some are made by additive processing methods such as 3D printing, and molds are formed by pouring methods. In the existing technology, there are the following problems in the subtractive processing technology such as milling, turning and grinding: ① High requirements for mold design and mold processing professionals; Long production period, ⑤ high processing cost, ⑥ after the mold is made, secondary modification and adjustment are difficult, high cost and long cycle, ⑦ mold maintenance is difficult and costly, ⑧ consumables are difficult to reuse. Additive processing technologies such as traditional 3D printing have the following problems: ①Slow processing speed and long time; ②The printing of large-sized components is limited; ③The types of printing consumables available are relatively limited and the cost is high; ④The strength of the printed components is insufficient. , ⑤ After the mold is made, the secondary modification and adjustment are difficult, costly, and the cycle is long. ⑦ Die maintenance is difficult and costly.

In view of this, the inventor of this case conducted in-depth research on the above-mentioned problem, and then this case was produced.

technical problem

The purpose of the present invention is to provide a mold that can be manufactured quickly and at low cost and is convenient for secondary processing adjustment, repair and maintenance, and recycling. Another purpose of the present invention is to propose a method for making the mold.

technical solution

In order to achieve the above purpose, the present invention adopts such a technical solution: a sheet-shaped combined mold that utilizes magnetic attraction, including a mold body, in which a cavity for molding an article is provided, and the mold body includes a plurality of magnetic The sheet body, each magnetic sheet body is provided with sub-mold cavities, and each magnetic sheet body is combined together by means of magnetic attraction, and the sub-mold cavities of each magnetic sheet body are combined to form the mold cavity.

As a preferred mode of the present invention, there are at least three magnetic pieces, and the shapes of the mold sub-cavities on each of the magnetic pieces are the same or different.

As a preferred mode of the present invention, the outer body of the magnetic sheet is covered with a mold frame for enhancing strength.

As a preferred mode of the present invention, the mold frame includes a bottom plate and a surrounding frame surrounding the bottom plate, the bottom plate and the surrounding frame form an accommodating chamber for accommodating the magnetic sheet, and the magnetic The sheet body is embedded in the accommodating chamber, and the magnetic sheet body is compounded with the mold frame to form a composite mold sheet, and a reinforced mold cavity corresponding to the mold cavity is provided on the composite mold sheet.

As a preferred mode of the present invention, the outer casing of the mold body is provided with a mold base that cooperates with the mold body.

As a preferred mode of the present invention, each of the magnetic sheet bodies is provided with a through hole, and also includes a fastening bolt, and the fastening bolt is passed through the through hole of each of the magnetic sheet bodies to lock each of the magnetic sheet bodies. Locks are held together.

As a preferred mode of the present invention, a protective layer is coated or sprayed on the wall of the mold cavity.

As a preferred mode of the present invention, the magnetic sheet body is a NdFeB magnetic sheet, an AlNiCo magnetic sheet, or a SmCo magnetic sheet, and also includes a cover plate that covers the mold cavity, and the mold cavity and the shoe sole shape to match.

The present invention also proposes a manufacturing method of a sheet-shaped combined mold that utilizes magnetic attraction, which is manufactured in the following manner: Step A, processing a plurality of sheet-shaped magnet material blocks, all or part of the magnet material blocks are provided with The sub-mould; step B, magnetizing a plurality of magnet material blocks to form a magnetic sheet body; step C, assembling the magnetic sheet bodies together by means of magnetic attraction, each magnetic sheet body constitutes the mold body, and each magnetic sheet body The sub-cavities form the cavity of the mold body.

As another mode of the present invention, the mold is manufactured in the following manner: step A, process a plurality of magnet material blocks in sheet shape, all or part of the magnet material blocks are provided with sub-cavities; step B, magnetic The material blocks are arranged together, each magnetic material block forms the mold body, and the sub-cavities of each magnetic sheet body form the mold cavity of the mold body; step C, magnetizing multiple magnet material blocks, so that each magnet material block magnetically attracts together.

As a preferred mode of the present invention, in step A, the magnetic sheet body is formed by 3D printing or processed by laser cutting, wire cutting and the like.

As a preferred mode of the present invention, the magnetic sheet body includes magnetic powder and a binder mixed together, and the magnetic powder is NdFeB permanent magnetic powder, AlNiCo permanent magnetic powder or samarium cobalt permanent magnetic powder or the like.

As a preferred mode of the present invention, the magnetic sheet body is processed by 3D printing equipment, and the 3D printing equipment includes a frame, a plurality of printing nozzles arranged on the frame, a conveying device arranged under the printing nozzles, and a For the mold frame on the conveying device, the conveying direction of the conveying device is the length direction of the frame, and a plurality of printing nozzles are arranged along the width direction of the frame, and each printing nozzle is arranged along the width of the frame, During 3D printing, each printing nozzle conveys printing materials to form printing units in the die frame, and presses the printing units through the press plate, so that each printing unit extends in the horizontal direction and sticks together.

As a preferred mode of the present invention, the print head is mounted on the frame through a first lifting mechanism, and the pressing plate is mounted on the frame through a second lifting mechanism.

As a preferred mode of the present invention, the mold frame includes a bottom plate and a surrounding frame arranged on the bottom plate, and a press plate is used to press the printing unit.

As a preferred mode of the present invention, discharge holes are arranged on the pressing plate, and high-pressure gas nozzles are arranged on the pressing plate corresponding to the discharging holes.

Beneficial effect

After adopting the technical solution of the present invention, the mold body is spliced together by magnetic sheets through magnetic attraction. When assembling the mold body, different numbers, different shapes, different structures, different thicknesses, and different materials can be selected according to requirements. Sheets, so as to quickly form molds of different specifications, improve mold production efficiency and reduce mold production costs. In addition, after the initial processing of the mold, you can also choose to quickly modify and improve the mold and maintain and repair it through simple secondary processing. For example, by milling machines, grinding machines or other processes, the secondary processing and improvement or maintenance of the magnetic sheet body is carried out; by remaking part of the magnetic sheet body, to replace the magnetic sheet body that really needs to be modified, the secondary processing, improvement or maintenance of the mold can be carried out; The wall of the cavity is coated or sprayed with a protective layer to increase the flatness of the mold surface and at the same time prevent the material from sticking to the cavity during the molding process. The present invention also proposes a manufacturing method of a sheet-shaped combined mold that utilizes magnetic attraction. The mold made by this method can be degaussed when the mold is scrapped and recycled, so that the magnetic pieces can be separated more easily, which is convenient for the follow-up of consumables. Recycle and reuse processing. In addition, when the present invention adopts the 3D printing method to process the magnetic sheet body, the printing units are respectively printed out by a plurality of printing nozzles, and then the printing units are squeezed to make each printing unit bonded together to form a magnetic sheet body, which is relatively Compared with the traditional 3D printing method, the invention has the advantages of simple movement path of the printing nozzle, easy manipulation, higher printing efficiency, wider selection of printing consumables, lower cost, and stronger printing component strength.

Description of drawings

Fig. 1 is the structural representation of mold among the present invention.

Fig. 2 is a schematic diagram of the structure of the magnetic sheet body in the present invention.

Fig. 3 is a schematic diagram of the cooperative structure of the conveying device, the frame body and the printing unit in the present invention.

Fig. 4 is a structural schematic diagram of the middle platen of the present invention.

Fig. 5 is a schematic structural diagram of the printing device cooperating with the conveying device in the present invention.

Fig. 6 is a schematic diagram of the arrangement of the printing nozzles in the present invention (the arrow in the figure indicates the moving direction of the mounting plate).

FIG. 7 is another structural schematic diagram of the arrangement of the printing heads in the present invention (the arrow in the figure indicates the moving direction of the mounting plate).

FIG. 8 is another structural schematic diagram of the arrangement of the printing heads in the present invention (the arrow in the figure indicates the moving direction of the mounting plate).

Fig. 9 is a schematic diagram of another structure of the magnetic sheet body in the present invention.

Fig. 10 is a schematic diagram of the structure of the mold body matched with the mold base in the present invention.

Fig. 11 is another structural schematic diagram of the middle pressure plate of the present invention.

In the figure: mold body 100; magnetic sheet body 10; sub-mold cavity 11; through hole 12; cavity 101; protective layer 102; cover plate 200; fastening bolt 20; conveying device 30; Frame 40; The first lifting mechanism 41; The second lifting mechanism 42; Print nozzle 43; Press plate 44; Discharge hole 441; ; Bottom plate 51; Reinforced cavity 52; Surrounding frame 53; Groove 54; Composite mold 500;

Embodiments of the present invention

In order to further explain the technical solution of the present invention, the following will be described in detail in conjunction with the examples.

Referring to Fig. 1 to Fig. 11, a sheet-shaped combined mold utilizing magnetic attraction includes a mold body 100, and a mold cavity 101 for forming an article is provided in the mold body 100. In an embodiment, the mold cavity 101 is connected to the shoe sole. Matched in shape, it can be used for foam molding of shoe soles. The mold body 100 includes a plurality of magnetic sheet bodies 10. In an embodiment, the thickness of the magnetic sheet body 10 is 1mm, and each magnetic sheet body 10 is provided with a sub-mold cavity 11, more specifically, a sub-mold cavity 11 is a part of the cavity wall of the mold cavity. Each magnetic sheet body 10 is combined together by means of magnetic attraction (according to the use requirements of the mold, there can be different magnetic attraction forces, usually strong magnetic attraction). Each magnetic sheet body 10 The sub-mold cavities 11 are assembled into the mold cavity 101.

As a preferred mode of the present invention, there are at least three magnetic sheet bodies 10, and the shapes of the sub-moulds 11 on each of the magnetic sheet bodies 10 are the same or different. When the sub-moulds of each magnetic sheet body 10 When the shapes of the cavities 11 are the same, they can be combined into relatively regular cavities, such as cuboid-shaped cavities. When the shapes of the sub-cavities 11 of each magnetic piece are different, the combination of various sub-cavities 11 can form Die cavities of various shapes. The present invention may also include a magnetic sheet body 10 without a sub-cavity 11 , and this type of magnetic sheet body 10 may be used as the periphery of the mold body 100 to increase the overall strength of the mold.

As a preferred mode of the present invention, the magnetic sheet body 10 is covered with a mold frame 50 for enhancing strength, and the mold frame 50 is, for example, a metal frame or a ceramic frame, which is used to enhance the strength of the magnetic sheet body 10. strength, which can be formed by metal powder through 3D printing, laser sintering, etc., or can be formed by degreasing and sintering the existing metal powder injection molding material after 3D printing. The strength of the material selected for the mold frame 50 is better than Magnetic sheet body 10 to meet the molding requirements of some occasions. Introduce the die frame of two kinds of structures in the present invention, in Fig. 3, die die frame 50 is as the tool of magnetic sheet body 10 processing, and magnetic sheet body 10 can be removed from die sheet frame 50, in In FIG. 9 , the magnetic sheet body 10 is bonded on the die frame 50 after being processed in the die frame 50 , and is integrated with the die frame 50 .

As a preferred mode of the present invention, the mold body 100 is covered with a mold frame 300 that cooperates with the mold body 100, the mold body 100 is installed on the mold frame 300 as a mold core, and the mold body 100 and the mold frame 300 can be clamped. The slot block is defined and positioned.

As a preferred mode of the present invention, each of the magnetic sheet bodies 10 is provided with a through hole 12, the through hole 12 is generally arranged at a position near the corner of the mould, and also includes a fastening bolt 20, and the fastening bolt 20 is passed through the Each of the magnetic sheet bodies 10 is locked and fixed together in the through holes 12 of each of the magnetic sheet bodies 10 . In the present invention, the magnetic pieces 10 can be magnetically attracted together by the magnetic attraction of the magnetic pieces 10 , and the magnetic pieces 10 can be combined more firmly by further providing fastening bolts 20 .

As a preferred mode of the present invention, a protective layer 102 is coated or sprayed on the wall surface of the mold cavity 101 (ie cavity wall). The protective layer 102 can be made of Teflon material, which can increase the smoothness of the surface and prevent the material from sticking to the mold cavity 101 during the molding process. The protective layer 102 may also be a gypsum layer, for example, to protect the mold body 100 .

As a preferred mode of the present invention, the magnetic sheet body 10 is a neodymium-iron-boron magnetic sheet, an alnico magnetic sheet or a samarium-cobalt magnetic sheet, which can withstand the temperature of shoe sole foam molding. The present invention also includes a cover plate 200 that is covered on the mold cavity 101. The mold cavity 101 is adapted to the shape of the sole. The cover plate 200 can also be made by magnetic suction. A chamber matching the mold cavity 101 can also be provided. After the cover plate 200 is covered on the mold body 100, the cover plate 200 and the mold body 100 form a molding chamber, which is used to receive materials for molding.

The present invention also proposes a manufacturing method of a sheet-shaped combined mold utilizing magnetic force, which is produced in the following manner: step A, processing a plurality of sheet-shaped magnetic sheet bodies 10, all or part of the magnetic sheet bodies 10 are A sub-mold cavity 11 is provided; specifically, the material for making the abrasive tool is selected, and according to the characteristics of the material and processing technology of the product to be processed, the selection is not limited to polypropylene, ABS, PPS, rubber, resin and other materials as adhesives, Choose but not limited to fast-quenched NdFeB permanent magnet powder, AlNiCo permanent magnet powder, samarium cobalt permanent magnet powder, and other additive materials can also be selected according to needs, and the materials are stirred evenly in proportion to form a bonded permanent magnet. The basic material of the magnetic sheet, the bonded permanent magnetic sheet, has been disclosed in the prior art, and will not be described in detail here. The present invention skillfully applies it to the mold. In the present invention, such materials are processed into standard sheet-shaped workpieces through 3D printing, calendering, compression molding, injection molding and other processes, and then laser cutting, wire cutting or sintering into magnetic sheet bodies 10 .

Step B, magnetize the multiple magnetic pieces 10, preferably, before magnetizing, combine the multiple magnetic pieces 10 into a mold core in a certain order, and use the existing public technology to magnetize or demagnetize, so that the magnetic The pieces 10 are magnetic, and can attract each other, or demagnetize the magnetic pieces 10 , so as to realize the separation of the magnetic pieces 10 .

Step C, the magnetized magnetic pieces 10 are assembled together by magnetic attraction, each magnetic piece 10 forms the mold body 100 , and the sub-cavities 11 of each magnetic piece 10 form the mold cavity of the mold body 100 . The initial precision of the mold is determined by the thickness of the magnetic sheet body 10, and in this embodiment, the initial precision is 1 mm.

Preferably, the mold cores are nested into the mold frame 300 to form the lower mold of the mould. To inspect the combined mold, the precision of the mold can be inspected by means of laser scanning, trial processing products, etc.

Preferably, the present invention can modify, improve, repair and maintain the mold quickly and at low cost through simple secondary processing as required. The mold can be combined with magnetic sheet bodies 10 of different thicknesses according to needs. If the initial precision cannot meet the requirements, the mold can be modified by simple secondary processing. The processing method can be: ① milling machine, grinding machine or other processes to carry out secondary processing modification, repair and maintenance of the mold; ② by remaking part of the magnetic sheet body 10 to replace the magnetic sheet body 10 that really needs to be modified to perform secondary processing on the mold Modification, repair and maintenance; ③The wall surface of the mold cavity can be coated or sprayed with a protective layer to increase the flatness of the mold surface and at the same time prevent the material from sticking to the mold cavity during the molding process.

In the present invention, the mold can be conveniently recycled and reused, specifically: 1. before the new mold is needed, the data of the existing mold in stock is matched by the database, a suitable old mold is selected, and the old mold is simply processed to form a new mold; 2. For molds that have no preservation value, the existing mature degaussing technology can be used to demagnetize the mold magnetic sheet. After degaussing, the magnetic sheet body 10 can be easily separated, broken, and re-granulated into a new bonded permanent magnetic sheet. base material.

As a preferred mode of the present invention, in step A, the magnetic sheet body 10 is formed by 3D printing or by laser cutting, wire cutting, etc., preferably, the magnetic sheet body 10 is formed by 3D printing.

As a preferred mode of the present invention, the magnetic sheet body 10 is processed by 3D printing equipment, and the 3D printing equipment includes a frame 40, a plurality of print nozzles 43 arranged on the frame 40, and The conveying device 30 and the mold frame 50 arranged on the conveying device 30, take the conveying direction of the conveying device 30 as the length direction of the frame 40, and a plurality of print nozzles 43 are arranged along the width direction of the frame 40, preferably Specifically, each print nozzle 43 is arranged on the frame 40 in a manner capable of moving along the width direction of the frame 40. In the embodiment, the lower end of the first lifting mechanism 41 is provided with a mounting plate 46, and a mounting plate 46 is provided on the mounting plate 46. There is a motor 47, the screw mandrel 48 is connected to the output shaft of the motor 47, the screw mandrel 48 is arranged along the width direction of the frame 40, the screw mandrel nut (not shown in the figure) is arranged on the screw mandrel 48, and the printing nozzle 43 is installed on the screw mandrel The nut moves on the screw rod 48 along with the screw rod nut, so as to realize the movement of the printing nozzle 43 in the width direction of the frame 40 . The mold frame 50 is placed on the conveying device 30, and the conveying device 30, for example, can adopt a conveyor belt to drive the mold frame 50 to move in the length direction of the frame 40, and cooperate with the printing nozzle 43 to move in the width direction of the frame 40. , to realize the movement of the printing nozzle 43 in two dimensions.

As another preferred mode of the present invention, multiple rows of shower heads are arranged on the mounting plate 46, and each row of shower heads includes a plurality of shower heads 43, and the plurality of shower heads 43 are arranged in dislocation in the moving direction of the mounting plate 46. In the embodiment, shown There are 5 rows of nozzles, 25 nozzles 43 in total, and each row of nozzles is used to print a printing unit 60 to improve printing efficiency and printing accuracy. Further, each nozzle 43 is position-controlled by a motor 47 and a screw mandrel 48, the initial position of the nozzle 43 can be adjusted by the motor 47 and the screw rod 48, thereby controlling the width of each printing unit 60, thereby better controlling the magnetic The shape of sheet 10.

In order to ensure that the die frame 50 is placed on the conveyor belt without displacement relative to the conveyor belt, the position of the die frame 50 can be limited by various limiting mechanisms. In the embodiment, the conveyor belt is provided with a positioning bump 31 A plurality of grooves 54 are correspondingly provided on the lower end surface of the die frame 50 , and when the die frame 50 is placed on the conveyor belt, the positioning protrusions 31 snap into the grooves 54 .

During 3D printing, each printing nozzle 43 transports printing materials to form printing units 60 in the die frame 50 respectively. In the embodiment, five printing units 60 are printed in the die frame 50, and each print Units 60 may have the same structure or different structures. The printing units 60 are squeezed by the pressing plate 44 so that each printing unit 60 expands in the horizontal direction and bonded together, that is, the printing units 60 are flattened and the adjacent printing units 60 are bonded together.

As a preferred mode of the present invention, the print head 43 is installed on the frame 40 through the first lifting mechanism 41, the pressing plate 44 is installed on the frame 40 through the second lifting mechanism 42, and the first lifting mechanism 41 and the second elevating mechanism 42 can adopt air cylinders, for example.

As a preferred mode of the present invention, the die frame 50 includes a bottom plate 51 and a surrounding frame 53 arranged on the bottom plate 51. In the embodiment, the surrounding frame 53 is a rectangular frame. In the present invention, the printing unit 60 presses After the magnetic sheet body 10 is formed, if the requirement for surface smoothness is high, the sub-mold cavity 11 can be further processed by turning, milling or grinding. In this embodiment, the magnetic sheet body 10 can be separated from the die frame 50 after processing.

In another embodiment of the present invention, the magnetic sheet body 10 is formed after the magnetic material is printed on the die frame 50, and the magnetic sheet body 10 is bonded with the die frame 50, and the die frame 50 is used to increase The strength of the magnetic sheet. When forming the mold body 100, the die frame 50 is assembled together with the magnetic sheet body 10, and the thickness of the bottom plate 51 in the die frame 50 is set according to the magnetism of the magnetic sheet body 10 to ensure that the die frame 50 is sleeved. The magnetic sheet bodies 10 can attract each other. As a preferred mode of the present invention, in this embodiment, the die frame 50 includes a bottom plate 51 and a surrounding frame 53 arranged on the bottom plate 51, and the magnetic sheet body 10 is combined with the die frame 50 Composite mold sheet 500 is formed, and composite mold sheet 500 is provided with a reinforcing mold cavity 52 corresponding to the mold cavity. Specifically, the reinforcing mold cavity 52 is arranged on the surrounding frame 53. After the mold body 100 is assembled, each reinforcement Cavity 52 forms cavity 101 . Preferably, the present invention can also set discharge holes 441 on the press plate 44. When the press plate 44 presses the printing unit, excess materials can enter the discharge holes 441 and be temporarily stored in the discharge holes 441. Through the displacement of the press plate 44 ( Or the conveyor belt is displaced relative to the pressing plate 44), the magnetic material in the discharge hole 441 and the magnetic material of the die frame 50 can be dislocated to form a shear, and the magnetic material in the discharge hole 441 is separated from the magnetic sheet body 10, The pressing plate 44 is provided with a high-pressure air nozzle 442, and after the die frame 50 is removed, the material in the discharge hole 441 can be blown away by the high-pressure air nozzle 442.

Compared with the traditional layer-by-layer stacking method, the printing method of the magnetic sheet body 10 of the present invention uses multiple nozzles to form the printing unit 60 respectively, and then performs extrusion bonding. The optional range of printing consumables is wider and the cost is lower. The strength is higher, the processing efficiency is higher, each printing unit 60 has a relatively regular shape, and the movement path of the printing nozzle 43 is simple, which is convenient for control and reduces the cost.

After the magnetic pieces 10 form the mold body 100 , through holes 12 are formed on the mold body 100 by drilling, and the magnetic pieces 10 are locked together by fastening bolts 20 .

The product form of the present invention is not limited to the embodiment of this case, and anyone who makes appropriate changes or modifications of similar ideas to it should be considered as not departing from the scope of the patent of the present invention.

Claims

A sheet-shaped combined mold that utilizes magnetic attraction, including a mold body, which is provided with a mold cavity for forming an article, and is characterized in that: the mold body includes a plurality of magnetic pieces, and each magnetic piece has a A sub-cavity is provided, and the magnetic pieces are combined together by means of magnetic attraction, and the sub-cavities of the magnetic pieces are joined together to form the mold cavity.
A sheet combined mold utilizing magnetic force as claimed in claim 1, characterized in that: there are at least 3 said magnetic sheets, and the number of said sub-die cavities on each said magnetic sheet is same or different shape.
A sheet-shaped combined mold that utilizes magnetic attraction according to claim 1, characterized in that: the outer body of the magnetic sheet is covered with a mold frame for enhancing strength.
A sheet combined mold utilizing magnetic force as claimed in claim 3, characterized in that: said mold frame comprises a bottom plate and a surrounding frame surrounding the bottom plate, the bottom plate and the surrounding frame are used to form a The accommodating chamber for accommodating the magnetic sheet body, the magnetic sheet body is embedded in the accommodating chamber, and the magnetic sheet body and the mold frame are combined together to form a composite mold piece. A reinforcing mold cavity corresponding to the mold cavity is provided on the mold piece.
A sheet combined mold utilizing magnetic force as claimed in claim 1, characterized in that: said mold body is covered with a mold base that cooperates with the mold body.
As claimed in claim 1, a sheet combined mold that utilizes magnetic attraction, is characterized in that: each of the magnetic sheets is provided with a through hole, and also includes a fastening bolt, and the fastening bolt is installed on each Each of the magnetic sheet bodies is locked and fixed together in the through holes of the magnetic sheet bodies.
A sheet-shaped combined mold utilizing magnetic attraction according to claim 1, characterized in that: the wall surface of the mold cavity is coated or sprayed with a protective layer.
A sheet-shaped combined mold that utilizes magnetic attraction as claimed in claim 1, wherein the magnetic sheet body is a NdFeB magnetic sheet, an AlNiCo magnetic sheet or a SmCo magnetic sheet, and also includes a cover The cover plate fits on the mold cavity, and the mold cavity is adapted to the shape of the sole.
A method for manufacturing a sheet-shaped combined mold that utilizes magnetic attraction, which is characterized in that: the following method is used to manufacture: Step A, processing a plurality of sheet-shaped magnet material blocks, all or part of the magnet material blocks are provided with The sub-mould; step B, magnetizing a plurality of magnet material blocks to form a magnetic sheet body; step C, assembling the magnetic sheet bodies together by means of magnetic attraction, each magnetic sheet body constitutes the mold body, and each magnetic sheet body The sub-cavities form the cavity of the mold body.
A method for manufacturing a sheet-shaped combined mold that utilizes magnetic attraction, which is characterized in that: the following method is used to manufacture: Step A, processing a plurality of sheet-shaped magnet material blocks, all or part of the magnet material blocks are provided with Sub-mold cavity; step B, arranging the magnetic material blocks together, each magnetic material block forms the mold body, and the sub-mold cavities of each magnetic sheet body form the mold cavity of the mold body; step C, filling a plurality of magnet material blocks Magnetic, so that the pieces of magnet material magnetically attract together.
The manufacturing method of a sheet combined mold using magnetic attraction as claimed in claim 10, characterized in that: in step A, the magnetic sheet body is formed by 3D printing or by laser cutting or wire cutting processing to form.
A method for making a sheet combined mold using magnetic attraction as claimed in claim 11, wherein the magnetic sheet body includes magnetic powder and adhesive mixed together, and the magnetic powder is NdFeB permanent magnet Magnetic powder, alnico permanent magnetic powder or samarium cobalt permanent magnetic powder.
A manufacturing method of a sheet-shaped combined mold utilizing magnetic attraction as claimed in claim 10, characterized in that: the magnetic sheet body is processed and manufactured by a 3D printing device, and the 3D printing device includes a frame, which is arranged on the machine A plurality of print nozzles on the frame, a conveying device arranged under the print nozzles, and a mold frame arranged on the conveying device, with the conveying direction of the conveying device as the length direction of the frame, a plurality of print nozzles along the machine The print nozzles are arranged along the width of the rack, and each print nozzle is arranged along the width of the frame. During 3D printing, each print nozzle conveys the printing material to form a printing unit in the die frame, and the printing unit is squeezed by the pressure plate. Each printing unit is expanded and extended in the horizontal direction and bonded together.
The manufacturing method of a sheet-shaped combined mold using magnetic attraction as claimed in claim 13, characterized in that: the printing nozzle is installed on the frame through the first lifting mechanism, and the pressing plate is mounted on the frame through the second The lifting mechanism is installed on the frame.
A method for making a combined sheet mold using magnetic attraction as claimed in claim 14, wherein the mold frame includes a base plate and a surrounding frame arranged on the base plate, and the press plate is used to squeeze the printing unit .
The manufacturing method of a sheet combined mold utilizing magnetic attraction as claimed in claim 15, characterized in that: the press plate is provided with discharge holes, and the press plate is provided with high-pressure air nozzles corresponding to the discharge holes.