CN110978374A - Method for injection moulding perforated spherical elements - Google Patents

Method for injection moulding perforated spherical elements Download PDF

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Publication number
CN110978374A
CN110978374A CN201911337414.2A CN201911337414A CN110978374A CN 110978374 A CN110978374 A CN 110978374A CN 201911337414 A CN201911337414 A CN 201911337414A CN 110978374 A CN110978374 A CN 110978374A
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CN
China
Prior art keywords
injection molding
spherical
upper die
cylinder
lower die
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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.)
Withdrawn
Application number
CN201911337414.2A
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Chinese (zh)
Inventor
刘龙云
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Maanshan Sizer Intellectual Property Service Co Ltd
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Maanshan Sizer Intellectual Property Service Co Ltd
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Application filed by Maanshan Sizer Intellectual Property Service Co Ltd filed Critical Maanshan Sizer Intellectual Property Service Co Ltd
Priority to CN201911337414.2A priority Critical patent/CN110978374A/en
Publication of CN110978374A publication Critical patent/CN110978374A/en
Withdrawn legal-status Critical Current

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    • 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
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/03—Injection moulding apparatus
    • 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
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
    • B29C45/14008—Inserting articles into the mould
    • 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
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
    • B29C45/14065—Positioning or centering articles in the mould
    • 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
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/1742—Mounting of moulds; Mould supports
    • 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
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/26—Moulds
    • B29C45/2602—Mould construction elements
    • 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
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/26—Moulds
    • B29C45/2628—Moulds with mould parts forming holes in or through the moulded article, e.g. for bearing cages
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
    • F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
    • F16F15/04—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/24—Casings; Enclosures; Supports specially adapted for suppression or reduction of noise or vibrations
    • 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
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/1742—Mounting of moulds; Mould supports
    • B29C2045/1746—Mounting of moulds; Mould supports using magnetic means
    • 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
    • B29L2022/00—Hollow articles
    • B29L2022/002—Globes

Abstract

The invention discloses an injection molding method of a perforated spherical member, which uses an injection mold comprising: the upper die is a shell with a downward spherical bulge, a horizontal plate is arranged at a notch of a spherical groove formed in the upper die, a loading rod used for driving the upper die to move up and down is fixedly connected to the middle of the horizontal plate, a plurality of first through holes are formed in the upper die, and a plurality of groove bodies coaxial with the first through holes are formed in the surface of the spherical recess; the injection molding method comprises the following steps: 1) moving the upper die downwards to an injection molding position through a loading rod; 2) inserting a plug into each first through hole, and inserting the end part of the plug into the groove body; 3) pouring injection molding liquid into a gap between the upper die and the lower die to start injection molding; 4) and 3) taking out the block after the injection molding is finished to obtain a molded injection molding piece. The injection molding method solves the problem that additional punching is needed after injection molding of the perforated spherical piece in the prior art.

Description

Method for injection moulding perforated spherical elements
Technical Field
The present invention relates to the field of injection molding, and in particular to a method of injection molding perforated spherical elements.
Background
A special perforated spherical member with a porous structure and a layer of spherical reinforced plate inside for improving strength needs, therefore, a special injection molding method is needed for injection molding, because the perforated spherical member is a curved surface, the perforation operation is not easy after injection molding, and if the perforated spherical member is perforated according to the perforation method in the prior art, the problems of poor precision and low efficiency are caused.
Disclosure of Invention
The invention aims to provide an injection molding method of a perforated spherical piece, which solves the problem that additional perforation is needed after injection molding of the perforated spherical piece in the prior art.
In order to achieve the above object, the present invention provides an injection molding method of a perforated spherical member, using an injection mold comprising: the upper die is a shell with a downward spherical bulge, a horizontal plate is arranged at a notch of a spherical groove formed in the upper die, a loading rod used for driving the upper die to move up and down is fixedly connected to the middle of the horizontal plate, a plurality of first through holes are formed in the upper die, and a plurality of groove bodies coaxial with the first through holes are formed in the surface of the spherical recess; the injection molding method comprises the following steps: 1) moving the upper die downwards to an injection molding position through the loading rod; 2) inserting a plug into each first through hole, and inserting the end part of the plug into the groove body; 3) pouring injection molding liquid into a gap between the upper die and the lower die to start injection molding; 4) and 3) taking out the block after the injection molding is finished to obtain a molded injection molding piece.
Preferably, before step 1), the method further comprises: moving the upper die to a certain height, and suspending the spherical plate above the lower die; and 2), plugging the spherical plate to penetrate through the second through holes and the first through holes and then inserting the spherical plate into the groove body.
Preferably, the spherical plate is suspended by a plurality of hoisting mechanisms; wherein, hoisting mechanism includes: the cylinder seat is fixedly connected to the side face of the lower die, and the first cylinder is fixedly connected to the cylinder seat; one end of the loading block is fixedly connected to the first cylinder, the other end of the loading block extends horizontally in the direction of the loading rod, a plurality of supporting lugs corresponding to the loading block are formed on the upper edge of the spherical plate, and the loading block acts on the lower surfaces of the supporting lugs to support the spherical plate through the supporting lugs.
Preferably, a limiting groove is formed in a part, in contact with the supporting lug, of the loading block, an opening is formed in one side, facing the supporting lug, of the limiting groove, and the supporting lug is limited in the limiting groove.
Preferably, an electromagnet is arranged in the middle of the lower die, and the spherical plate can be adsorbed with the electromagnet.
Preferably, the injection mold further comprises: the vibrating mechanism is arranged below the lower die and connected to the lower die; wherein the vibration mechanism includes: the base is arranged below the lower die and is connected with the lower die through a plurality of elastic telescopic pieces; the bottom of lower mould is provided with biax vibrating motor, all overlap on two axis bodies of biax vibrating motor and be equipped with the cam.
Preferably, the bottom of the lower die is provided with a through groove matched with the cam.
Preferably, the double-shaft vibration motor is connected with the base through a support spring. .
Preferably, the elastic expansion member comprises: the telescopic link is located with the cover damping spring on the telescopic link, telescopic link and damping spring's both ends are equallyd divide do not the rigid coupling in lower mould and base.
Preferably, a cylinder frame is arranged at the position, located at each first through hole, of the upper die, a second cylinder is mounted on the cylinder frame, and the plug shaft is fixed to a cylinder shaft of the second cylinder in a shaft connection mode.
According to the technical scheme, the injection molding method comprises the following steps: 1) moving the upper die downwards to an injection molding position through the loading rod; 2) inserting a plug into each first through hole, and inserting the end part of the plug into the groove body; 3) pouring injection molding liquid into a gap between the upper die and the lower die to start injection molding; 4) and 3) taking out the block after the injection molding is finished to obtain a molded injection molding piece. By combining the method with the injection mold, the injection molded part does not need to be additionally punched, and compared with the traditional punching operation, the punching method has the advantages of high precision and high efficiency.
Additional features and advantages of the invention will be set forth in the detailed description which follows.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a flow chart of a preferred embodiment of the injection molding process of the present invention;
FIG. 2 is a schematic overall structure of a preferred embodiment of an injection mold;
FIG. 3 is a state diagram of a preferred embodiment of the upper die, lower die and spherical plate material;
fig. 4 is a structural view of a preferred embodiment in which the second cylinder is mounted on the upper die.
Description of the reference numerals
1 lower die and 2 upper die
3 spherical surface plate 4 support lug
5 block 6 horizontal plates
7 loading rod 8 loading block
9 first cylinder 10 cylinder block
11 electromagnet 12 base
13 support spring 14 passing through the groove
15 double-shaft vibrating motor 16 cam
17 telescopic rod 18 damping spring
19 second cylinder 20 first through hole
Detailed Description
The following detailed description of embodiments of the invention refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.
In the present invention, unless otherwise specified, directional words included in terms such as "upper, lower, left, right, front, rear, inner, and outer" and the like merely represent the directions of the terms in a normal use state or are colloquially known by those skilled in the art, and should not be construed as limiting the terms.
Referring to the flow chart of fig. 1, and the associated block diagram of the injection mold of fig. 2-4, the method of injection molding a perforated spherical member in the present invention uses an injection mold comprising: the device comprises an upper die 2 and a lower die 1, wherein a spherical recess is formed on the upper surface of the lower die 1, the upper die 2 is a shell with a downward spherical bulge, a horizontal plate 6 is arranged at a notch of a spherical groove formed on the upper die 2, a loading rod 7 for driving the upper die 2 to move up and down is fixedly connected to the middle part of the horizontal plate 6, a plurality of first through holes 20 are formed on the upper die 2, and a plurality of groove bodies coaxial with the first through holes 20 are formed on the surface of the spherical recess; the injection molding method comprises the following steps: 1) the upper die 2 is moved downwards to the injection position by the loading rod 7; 2) inserting a plug 5 into each first through hole 20, and inserting an end of the plug 5 into the tank body; 3) pouring injection molding liquid into a gap between the upper die 2 and the lower die 1 to start injection molding; 4) and 3) taking out the plug 5 after the injection molding is finished to obtain a molded injection molding piece.
Through above-mentioned technical scheme's implementation, combine injection mold can need not punch the operation in addition to the injection molding after moulding plastics, compare in traditional operation of punching, have the efficient advantage of precision height. The loading rod 7 can be a hydraulic telescopic rod 17, a pneumatic telescopic rod 17 or an electric telescopic rod 17.
In this embodiment, when it is required to perform injection molding on the injection molded part embedded with the spherical plate material 3, it is preferable to further include, before step 1): moving the upper die 2 to a certain height, and suspending the spherical plate 3 above the lower die 1; in step 2), the plug 5 penetrates through the second through holes and the first through holes 20 and then is inserted into the groove body. The upper die 2 moves to a height that the spherical plate 3 can be placed between the upper die 2 and the lower die 1. Insert the prefabrication work that can accomplish perforation sphere piece hole on after in the cell body through blockking up 5 each and insert again after passing second through-hole and first through-hole 20, do not need solitary process of punching, the problem that curved surface shape structure is difficult to punch can be avoided, because whole hole is once only accomplished, consequently, efficiency more generally punches and promotes obviously, because three point is a line of keeping away from, the second through-hole promptly, three point that first through-hole 20 and cell body are constituteed makes the precision in hole compare in normal punching and have obvious promotion.
In this embodiment, since the spherical plate material 3 needs to be suspended between the upper die 2 and the lower die 1, preferably, the spherical plate material 3 is suspended by a plurality of lifting mechanisms; wherein, hoisting mechanism includes: the device comprises a cylinder seat 10, a first cylinder 9 and a loading block 8, wherein the cylinder seat 10 is fixedly connected to the side surface of the lower die 1, and the first cylinder 9 is fixedly connected to the cylinder seat 10; one end of the loading block 8 is fixedly connected to the first air cylinder 9, the other end of the loading block faces the direction of the loading rod 7 and extends horizontally, a plurality of supporting lugs 4 corresponding to the loading block 8 are formed on the upper edge of the spherical plate 3, and the loading block 8 acts on the lower surfaces of the supporting lugs 4 to support the spherical plate 3 through supporting the supporting lugs 4.
In this embodiment, in order to better define the position of the supporting lug 4 and prevent deviation, it is preferable that a limiting groove is formed on a portion of the loading block 8, which is in contact with the supporting lug 4, and one side of the limiting groove facing the supporting lug 4 is set to be open, and the supporting lug 4 is limited in the limiting groove.
In this embodiment, since the spherical plate 3 has a certain buoyancy after the injection liquid is injected, the position thereof may be shifted, and in order to further stabilize the position of the spherical plate 3, it is preferable that an electromagnet 11 is disposed at the middle portion in the lower mold 1, and the spherical plate 3 and the electromagnet 11 can generate an adsorption effect. Can press spherical panel 3 firmly on the record piece through the adsorption between spherical panel 3 and the electro-magnet 11, the steadiness can be high, can to electro-magnet 11 outage after the completion of moulding plastics. In addition, the spherical plate material 3 should be selected to have a material capable of attracting the magnet.
In this embodiment, in order to further improve the injection molding effect, preferably, the injection mold further includes: the vibrating mechanism is arranged below the lower die 1 and connected to the lower die 1; wherein the vibration mechanism includes: the base 12 is arranged below the lower die 1, and the base 12 is connected with the lower die 1 through a plurality of elastic telescopic pieces; the bottom of lower mould 1 is provided with biax vibrating motor 15, all overlap on two axostylus bodies of biax vibrating motor 15 and be equipped with cam 16.
In this embodiment, in order to reduce the overall height without affecting the vibration effect, it is preferable that the bottom of the lower die 1 is provided with a passage groove 14 that cooperates with the cam 16.
In this embodiment, in order to provide a certain damping effect to the biaxial vibration motor 15, it is preferable that the biaxial vibration motor 15 and the base 12 are connected by a support spring 13. .
In this embodiment, in order to further provide an elastic expansion piece to have a good shock absorption effect on the lower die 1, preferably, the elastic expansion piece includes: telescopic link 17 and cover are located damping spring 18 on the telescopic link 17, telescopic link 17 and damping spring 18's both ends are equallyd divide do not in lower mould 1 and base 12.
In this embodiment, in order to realize the automatic control of the plug 5 in step 2), preferably, a cylinder frame is disposed on the upper die 2 at each position of the first through hole 20, a second cylinder 19 is mounted on the cylinder frame, and the plug 5 is fixed on a cylinder shaft of the second cylinder 19 in a shaft coupling manner.
The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, however, the present invention is not limited to the specific details of the above embodiments, and various simple modifications can be made to the technical solution of the present invention within the technical idea of the present invention, and these simple modifications are within the protective scope of the present invention.
It should be noted that the various technical features described in the above embodiments can be combined in any suitable manner without contradiction, and the invention is not described in any way for the possible combinations in order to avoid unnecessary repetition.
In addition, any combination of the various embodiments of the present invention is also possible, and the same should be considered as the disclosure of the present invention as long as it does not depart from the spirit of the present invention.

Claims (10)

1. A method of injection molding a perforated spherical element, the method using an injection mold comprising: the device comprises an upper die (2) and a lower die (1), wherein a spherical recess is formed on the upper surface of the lower die (1), the upper die (2) is a shell with a spherical bulge formed downwards, a horizontal plate (6) is arranged at a notch of a spherical groove formed in the upper die (2), a loading rod (7) used for driving the upper die (2) to move up and down is fixedly connected to the middle part of the horizontal plate (6), a plurality of first through holes (20) are formed in the upper die (2), and a plurality of groove bodies coaxial with the first through holes (20) are formed on the surface of the spherical recess;
the injection molding method comprises the following steps: 1) the upper die (2) is moved downwards to an injection molding position through the loading rod (7); 2) inserting a plug (5) into each first through hole (20), and inserting the end of the plug (5) into the groove body; 3) pouring injection molding liquid into a gap between the upper die (2) and the lower die (1) to start injection molding; 4) and 3) taking out the plug (5) after the injection molding is finished to obtain a molded injection molding piece.
2. A method of injection molding a perforated spherical element as claimed in claim 1 further comprising, prior to step 1): moving the upper die (2) to a certain height, and suspending the spherical plate (3) above the lower die (1); wherein the content of the first and second substances,
the spherical plate (3) is provided with a plurality of second through holes which are in one-to-one correspondence with the first through holes (20), and in the step 2), the plug (5) penetrates through the second through holes and the first through holes (20) and then is inserted into the groove body.
3. A method of injection moulding a perforated spherical element according to claim 2, characterized in that said spherical sheet material (3) is suspended by a plurality of lifting means; wherein the content of the first and second substances,
the hoisting mechanism comprises: the device comprises a cylinder seat (10), a first cylinder (9) and a loading block (8), wherein the cylinder seat (10) is fixedly connected to the side surface of the lower die (1), and the first cylinder (9) is fixedly connected to the cylinder seat (10);
one end rigid coupling of loading block (8) in on first cylinder (9), the other end orientation the direction level of loading rod (7) extends, the last reason of sphere panel (3) be formed with a plurality of with support ear (4) that loading block (8) correspond, loading block (8) act on the lower surface of support ear (4) is in order to through holding up support ear (4) will sphere panel (3) hold up.
4. A method as claimed in claim 3, wherein said loading block (8) is formed with a retaining groove in a portion thereof which contacts said retaining lug (4), wherein a side of said retaining groove facing said retaining lug (4) is open, and said retaining lug (4) is retained in said retaining groove.
5. A method as claimed in claim 3, wherein an electromagnet (11) is provided centrally in said lower mold (1), said spherical sheet material (3) being capable of attracting said electromagnet (11).
6. A method of injection molding a perforated spherical member according to any one of claims 1-5, wherein the injection mold further comprises: the vibration mechanism is arranged below the lower die (1) and connected to the lower die (1); wherein the content of the first and second substances,
the vibration mechanism includes: the base (12) is arranged below the lower die (1), and the base (12) is connected with the lower die (1) through a plurality of elastic telescopic pieces;
the bottom of lower mould (1) is provided with biax vibrating motor (15), all overlap on two axostylus bodies of biax vibrating motor (15) and be equipped with cam (16).
7. A method of injection moulding a perforated spherical element according to claim 6, characterised in that the bottom of the lower mould (1) is provided with a through slot (14) cooperating with the cam (16).
8. A method of injection moulding a perforated spherical element according to claim 6, characterised in that said biaxial vibration motor (15) is connected to said base (12) by means of support springs (13).
9. A method of injection molding a perforated spherical element as claimed in claim 6, wherein said elastic expansion element comprises: telescopic link (17) and cover are located damping spring (18) on telescopic link (17), the both ends of telescopic link (17) and damping spring (18) are equallyd divide do not in lower mould (1) and base (12).
10. A method of injection moulding a perforated spherical element according to claim 1, characterised in that a cylinder frame is arranged on the upper mould (2) at the location of each of said first through holes (20), that a second cylinder (19) is mounted on said cylinder frame, and that said block (5) is journalled fixed to the cylinder axis of said second cylinder (19).
CN201911337414.2A 2019-12-23 2019-12-23 Method for injection moulding perforated spherical elements Withdrawn CN110978374A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201911337414.2A CN110978374A (en) 2019-12-23 2019-12-23 Method for injection moulding perforated spherical elements

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201911337414.2A CN110978374A (en) 2019-12-23 2019-12-23 Method for injection moulding perforated spherical elements

Publications (1)

Publication Number Publication Date
CN110978374A true CN110978374A (en) 2020-04-10

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CN201911337414.2A Withdrawn CN110978374A (en) 2019-12-23 2019-12-23 Method for injection moulding perforated spherical elements

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111531809A (en) * 2020-05-13 2020-08-14 于祯灏 Scattered-point recombination type die for one-step forming of spherical plastic net

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111531809A (en) * 2020-05-13 2020-08-14 于祯灏 Scattered-point recombination type die for one-step forming of spherical plastic net

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Application publication date: 20200410