CN112959617A - One-outlet two-lead-acid battery box injection mold - Google Patents
One-outlet two-lead-acid battery box injection mold Download PDFInfo
- Publication number
- CN112959617A CN112959617A CN202110343068.XA CN202110343068A CN112959617A CN 112959617 A CN112959617 A CN 112959617A CN 202110343068 A CN202110343068 A CN 202110343068A CN 112959617 A CN112959617 A CN 112959617A
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- Prior art keywords
- plate
- core
- runner
- mold
- acid battery
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Classifications
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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
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
- B29C45/2602—Mould construction elements
- B29C45/2606—Guiding or centering means
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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
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
- B29C45/32—Moulds having several axially spaced mould cavities, i.e. for making several separated articles
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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
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/72—Heating or cooling
- B29C45/73—Heating or cooling of the mould
- B29C45/7331—Heat transfer elements, e.g. heat pipes
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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
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/72—Heating or cooling
- B29C45/73—Heating or cooling of the mould
- B29C45/7337—Heating or cooling of the mould using gas or steam
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The invention relates to an injection mold for a two-outlet lead-acid battery box, which comprises an upper mold component and a lower mold component, wherein the upper mold component comprises an upper runner mounting plate, an upper connecting plate and an upper mold plate which are sequentially arranged from top to bottom, an upper mold core is arranged on the upper mold plate, the lower mold component comprises a lower mold plate which is sequentially arranged from top to bottom, lower locating plate and bottom plate, be provided with two lower cores in the lower locating plate, two lower cores run through the lower bolster respectively and stretch into in the upper core, the lateral wall and the lower bolster sealing fit of lower core, constitute two die cavity settings between upper core and two lower cores, be provided with first holding chamber in the upper runner mounting panel, first holding intracavity is provided with the runner plate, the center department of runner plate is provided with the pouring pipe, the runner plate is provided with two sets of discharging pipes in two die cavity departments that correspond, each discharging pipe passes through the runner and pours the pipe intercommunication, the nozzle of each discharging pipe extends corresponding die cavity department. Adopt above-mentioned scheme, it can two battery cases of injection moulding at every turn, and machining efficiency is high.
Description
Technical Field
The invention relates to the technical field of injection molds, in particular to an injection mold for a one-to-two lead-acid battery box.
Background
The battery box of the lead-acid battery is formed by injection molding of a mold, generally, hot-melt plastic is injected into a cavity of the mold, the plastic is uniformly heated for a period of time, and then the plastic is cooled for a period of time to form the battery box. However, in a common mold, only one battery box can be formed in one mold, and the processing efficiency is low.
Disclosure of Invention
The invention overcomes the defects of the prior art and provides the injection mold for the two-in-one lead-acid battery box, which can be used for injection molding two battery boxes at a time and has high processing efficiency.
In order to achieve the purpose, the invention adopts the technical scheme that: a one-outlet two-lead-acid battery box injection mold comprises an upper mold component and a lower mold component, wherein the upper mold component comprises an upper runner mounting plate, an upper connecting plate and an upper mold plate which are sequentially arranged from top to bottom, the upper runner mounting plate is fixedly connected with the upper connecting plate, the upper connecting plate is fixedly connected with the upper mold plate, an upper mold core is arranged on the upper mold plate, the lower mold component comprises a lower mold plate, a lower positioning plate and a lower fixing plate which are sequentially arranged from top to bottom, the lower mold plate is attached to the upper mold plate and fixedly connected with the lower positioning plate, the lower positioning plate is fixedly connected with the lower fixing plate, two lower mold cores are arranged in the lower positioning plate at intervals, the two lower mold cores respectively penetrate through the lower mold plate and extend into the upper mold core, the side wall of each lower mold core is in sealing fit with the lower mold plate, two mold cavities are arranged, the first containing cavity is internally provided with a runner plate, the center of the runner plate is provided with an injection pipe, the runner plate is provided with two groups of discharging pipes corresponding to the two cavities, each discharging pipe is communicated with the injection pipe through a runner, and a nozzle of each discharging pipe extends to the corresponding cavity.
Through adopting above-mentioned scheme, an upper mold core and two lower mold core cooperations can constitute two die cavities, can be at the die cavity shaping battery case, and every die cavity corresponds seven discharging pipes, and outside hot melt plastics are through pouring into the runner of water pipe injection runner board in, by runner with plastics evenly distributed to each discharging pipe, and the nozzle spun plastics of discharging pipe can get into the die cavity, then after the cooling, two battery cases of once injection moulding, and machining efficiency is high.
The invention further provides that: the upper end face of runner plate is provided with two cylinder groups respectively corresponding to two sets of discharging pipes, wherein each cylinder group comprises three cylinders arranged at equal intervals, the lower ends of the pistons of the three cylinders in each cylinder group are fixedly connected with a linkage plate, the linkage plate is provided with a valve needle corresponding to the discharging pipe, and each valve needle can extend into the discharging pipe and is in clearance fit with a nozzle of the discharging pipe.
Through adopting above-mentioned scheme, be provided with seven needles on the linkage board, three cylinder drives the linkage board simultaneously and reciprocates to the needle on the drive linkage board reciprocates, can prevent the nozzle jam of discharging pipe, simple structure, control is convenient.
The invention further provides that: the lower core comprises six core plates which are arranged side by side, every two core plates are mutually attached and fixedly connected with each other, the lower ends of the core plates are respectively abutted on the lower fixing plate and fixedly connected with the lower fixing plate, and first cooling air channels are respectively arranged in the core plates.
By adopting the above scheme, the narrow width setting down on the core to the lower extreme of core passes through the fix with screw setting on the bottom plate, and the setting of first cooling duct can carry out rapid cooling to the core, makes battery case rapid prototyping, simple structure, reasonable in design.
The invention further provides that: the runner plate is provided with heating wires, the side surface of the upper runner mounting plate is provided with an adjusting hole at one side corresponding to each group of discharging pipes, and the bottom surface of the upper runner mounting plate is provided with a first through hole for the discharging pipes to penetrate through.
Through adopting above-mentioned scheme, the regulation hole is provided with seven, and the heating wire generates heat after the circular telegram, can heat the runner board, guarantees that the plastics in the runner flow smoothly, simple structure, reasonable in design.
The invention further provides that: the upper end face of the upper connecting plate is provided with a slot for inserting a nozzle of the discharging pipe, the bottom of the slot is provided with a second through hole communicated with the cavity, the lower end face of the upper connecting plate is provided with a first concave cavity, and a second cooling air channel is further arranged in the upper connecting plate.
Through adopting above-mentioned scheme, the slot plays the positioning action to the nozzle of discharging pipe, and the upper junction plate is laminated through first cavity and cope match-plate pattern more, and the setting of second cooling duct can carry out rapid cooling, simple structure, reasonable in design to the upper junction plate.
The invention further provides that: the upper end face and the lower end face of the upper die plate are respectively provided with a first boss and a second boss, the first boss is matched with the first cavity in shape and is inserted into the first cavity, the upper die plate is provided with a second accommodating cavity in the middle of the first boss, the upper die core is arranged in the second accommodating cavity, the outer side face of the upper die core is attached to the inner wall of the second accommodating cavity, the upper die core is fixedly connected with an upper connecting plate, and a third cooling air duct is arranged in the upper die plate.
By adopting the above scheme, the upper core passes through screw fixed connection with the upper junction plate, and the location installation of cope match-plate pattern and upper junction plate and lower bolster of being convenient for is installed to the setting of first boss and second boss, and the setting in third cooling air duct can carry out rapid cooling, simple structure, reasonable in design to the cope match-plate pattern.
The invention further provides that: the upper end surface of the lower template is provided with a second cavity matched with the second boss, the second boss is inserted into the second cavity, the lower template is further provided with a supporting plate, the lower mold core penetrates through the supporting plate, and the supporting plate is provided with an overflow groove.
By adopting the scheme, the side surface of the supporting plate is attached to the side surface of the lower core plate, injected plastic cannot flow through the supporting plate so as to form a complete battery box body, and redundant plastic can be discharged from the overflow groove.
The invention further provides that: the lower positioning plate is provided with an opening for the lower mold core to penetrate through, the side wall of the opening is provided with a positioning block for positioning the lower mold core, the positioning block is fixedly connected with the lower fixing plate, the lower positioning plate is fixedly provided with guide posts, and the guide posts penetrate through the lower positioning plate, the lower mold plate, the upper connecting plate and the upper runner mounting plate respectively.
Through adopting above-mentioned scheme, the setting of locating piece can play limiting displacement to lower die core, and the setting of guide post can supply mould subassembly and lower mould subassembly direction assembly, simple structure, reasonable in design.
The invention further provides that: and a fourth cooling air channel is arranged on the lower fixing plate and communicated with the first cooling air channel.
Through adopting above-mentioned scheme for every core plate can both cool off, reasonable in design in the core down.
The invention further provides that: an upper end cover is fixedly arranged on the upper end face of the upper flow channel mounting plate, the upper end of the pouring pipe extends out of the upper end cover, and a lower end cover is fixedly arranged on the lower end face of the lower fixing plate.
By adopting the scheme, the upper end cover and the lower end cover are used for connecting external equipment so as to facilitate the installation of the die.
The invention is further described below with reference to the accompanying drawings.
Drawings
FIG. 1 is a schematic overall structure diagram of an embodiment of the present invention;
FIG. 2 is a schematic top view of an embodiment of the present invention;
FIG. 3 is a schematic cross-sectional view taken along line B-B of FIG. 2;
FIG. 4 is a schematic cross-sectional view taken along line C-C of FIG. 2;
FIG. 5 is a schematic view of the mating structure of the upper core and the lower core;
FIG. 6 is a schematic view of the structure of the lower core;
FIG. 7 is a schematic structural view of an upper flow channel mounting plate;
FIG. 8 is a schematic structural view of a flow field plate;
FIG. 9 is a schematic structural view of an upper end surface of the upper connecting plate;
FIG. 10 is a schematic view of the lower end surface of the upper connecting plate;
FIG. 11 is a schematic view of the mating structure of the upper mold plate and the upper core;
FIG. 12 is a schematic view of the lower end surface of the upper platen;
FIG. 13 is a schematic structural view of the lower template;
FIG. 14 is a schematic view of the structure of the lower positioning plate;
FIG. 15 is a schematic structural view of the lower fixing plate;
fig. 16 is a schematic view of the structure of the battery pack.
Detailed Description
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the present invention.
As shown in figures 1-15, the one-outlet two-lead acid battery box injection mold comprises an upper mold component and a lower mold component, wherein the upper mold component comprises an upper runner mounting plate 1, an upper connecting plate 2 and an upper mold plate 3 which are sequentially arranged from top to bottom, the upper runner mounting plate 1 is fixedly connected with the upper connecting plate 2 through screws, the upper connecting plate 2 is fixedly connected with the upper mold plate 3 through screws, an upper mold core 4 is arranged on the upper mold plate 3, the lower mold component comprises a lower mold plate 5, a lower positioning plate 6 and a lower fixing plate 7 which are sequentially arranged from top to bottom, the lower mold plate 5 is attached to the upper mold plate 3, the lower mold plate 5 is fixedly connected with the lower positioning plate 6 through hinges, the lower positioning plate 6 is fixedly connected with the lower fixing plate 7 through screws, two lower mold cores 8 are arranged in the lower positioning plate 6 at intervals, the two lower mold cores 8 respectively penetrate through the lower mold plate 5 and extend into the upper mold core, constitute two die cavity A settings between upper mold core 4 and two lower mold cores 8, be provided with first holding chamber 11 in the upper flow channel mounting panel 1, be provided with runner plate 91 in the first holding chamber 11, runner plate 91's center department is provided with notes water pipe 92, runner plate 91 is provided with two sets of discharging pipes 93 in two die cavity A departments intervals that correspond, every discharging pipe 93 of group is including seven, each discharging pipe 93 is through runner and notes water pipe 92 intercommunication, the nozzle of each discharging pipe 93 extends corresponding die cavity A department.
In this embodiment, two cylinder groups are respectively disposed on the upper end surface of the flow channel plate 91 at two corresponding groups of discharge pipes 93, each cylinder group includes three cylinders 94 disposed at equal intervals, the lower ends of the pistons of the three cylinders 94 in each cylinder group are fixedly connected with a linkage plate 95, the linkage plate 95 is provided with valve needles at positions corresponding to the discharge pipes 93, and each valve needle can extend into the discharge pipe 93 and be in clearance fit with nozzles of the discharge pipe 93.
In this embodiment, the lower core 8 includes six core plates 81 arranged side by side, each core plate 81 is attached to each other two by two and is fixedly connected to each other by screws, the lower end of each core plate 81 abuts against the lower fixing plate 7 and is fixedly connected to the lower fixing plate 7 by screws, and the first cooling air duct 811 is arranged in each core plate 81.
In this embodiment, the flow path plate 91 is provided with a heating wire 96, the side surface of the upper flow path mounting plate 1 is provided with an adjusting hole 13 at a side corresponding to each group of discharge pipes 93, and the bottom surface of the upper flow path mounting plate 1 is provided with a first through hole 12 for the discharge pipe 93 to pass through.
In this embodiment, the upper end surface of the upper connecting plate 2 is provided with a slot 21 into which a nozzle of the discharging pipe 93 is inserted, the bottom of the slot 21 is provided with a second through hole 22 communicated with the cavity, the lower end surface of the upper connecting plate 2 is provided with a first cavity 23, and the upper connecting plate 2 is further provided with a second cooling air duct 24.
In this embodiment, the upper end surface and the lower end surface of the upper template 3 are respectively provided with a first boss 31 and a second boss 32, the first boss 31 is matched with the shape of the first cavity 23 and is inserted into the first cavity 23, the upper template 3 is provided with a second accommodating cavity 33 in the middle of the first boss 31, the upper core 4 is arranged in the second accommodating cavity 33, the outer side surface of the upper core 4 is attached to the inner wall of the second accommodating cavity 33, the upper core 4 is fixedly connected with the upper connecting plate 2 through screws, and a third cooling air duct 34 is arranged in the upper template 3.
In this embodiment, the upper end surface of the lower template 5 is provided with a second cavity 51 matched with the second boss 32, the second boss 32 is inserted into the second cavity 51, the lower template 5 is further provided with a support plate 101, the lower core 8 passes through the support plate 101, and the upper end surface of the support plate 101 is provided with an overflow groove 1011.
In this embodiment, an opening 61 through which the lower mold core 8 is inserted is formed in the lower positioning plate 6, a positioning block 102 for positioning the lower mold core 8 is disposed on a side wall of the opening 61, the positioning block 102 is fixedly connected to the lower fixing plate 7, a guide post 103 is fixedly disposed on the lower positioning plate 6, and the guide post 103 is respectively inserted into the lower positioning plate 6, the lower mold plate 5, the upper mold plate 3, the upper connecting plate 2 and the upper runner mounting plate 1.
In the present embodiment, the lower fixing plate 7 is provided with a fourth cooling air duct 71, and the fourth cooling air duct 71 and the first cooling air duct 811 are communicated with each other.
In this embodiment, an upper end cover 104 is fixedly provided on the upper end surface of the upper flow path mounting plate 1, the upper end of the pouring pipe 92 is disposed to extend out of the upper end cover 104, and a lower end cover 105 is fixedly provided on the lower end surface of the lower fixing plate 7.
In this embodiment, a battery case D is injection molded as shown in fig. 16.
The above embodiments are merely preferred embodiments of the present invention, and general changes and substitutions by those skilled in the art within the technical scope of the present invention are included in the protection scope of the present invention.
Claims (10)
1. The utility model provides a two lead acid battery case injection mold, includes mould assembly and bed die assembly, its characterized in that: the upper die assembly comprises an upper runner mounting plate, an upper connecting plate and an upper die plate which are sequentially arranged from top to bottom, the upper runner mounting plate is fixedly connected with the upper connecting plate, the upper connecting plate is fixedly connected with the upper die plate, an upper core is arranged on the upper die plate, the lower die assembly comprises a lower die plate, a lower positioning plate and a lower fixing plate which are sequentially arranged from top to bottom, the lower die plate is attached to the upper die plate, the lower die plate is fixedly connected with the lower positioning plate, the lower positioning plate is fixedly connected with the lower fixing plate, two lower cores are arranged in the lower positioning plate at intervals, the two lower cores respectively penetrate through the lower die plate and extend into the upper core, the side wall of the lower core is in sealing fit with the lower die plate, two cavities are formed between the upper core and the two lower cores, a first accommodating cavity is arranged in the upper runner mounting plate, a runner plate is, the runner plate is provided with two groups of discharging pipes at positions corresponding to the two cavities, each discharging pipe is communicated with the injection pouring pipe through a runner, and a nozzle of each discharging pipe extends to the corresponding cavity.
2. The injection mold for one-to-two lead-acid battery cases according to claim 1, wherein: the upper end face of runner plate is provided with two cylinder groups respectively corresponding to two sets of discharging pipes, wherein each cylinder group comprises three cylinders arranged at equal intervals, the lower ends of the pistons of the three cylinders in each cylinder group are fixedly connected with a linkage plate, the linkage plate is provided with a valve needle corresponding to the discharging pipe, and each valve needle can extend into the discharging pipe and is in clearance fit with a nozzle of the discharging pipe.
3. The injection mold for one-out-two lead-acid battery cases according to claim 1 or 2, wherein: the lower core comprises six core plates which are arranged side by side, every two core plates are mutually attached and fixedly connected with each other, the lower ends of the core plates are respectively abutted on the lower fixing plate and fixedly connected with the lower fixing plate, and first cooling air channels are respectively arranged in the core plates.
4. The injection mold for one-out-two lead-acid battery cases according to claim 1 or 2, wherein: the runner plate is provided with heating wires, the side surface of the upper runner mounting plate is provided with an adjusting hole at one side corresponding to each group of discharging pipes, and the bottom surface of the upper runner mounting plate is provided with a first through hole for the discharging pipes to penetrate through.
5. The injection mold for one-out-two lead-acid battery cases according to claim 1 or 2, wherein: the upper end face of the upper connecting plate is provided with a slot for inserting a nozzle of the discharging pipe, the bottom of the slot is provided with a second through hole communicated with the cavity, the lower end face of the upper connecting plate is provided with a first concave cavity, and a second cooling air channel is further arranged in the upper connecting plate.
6. The injection mold for one-to-two lead-acid battery cases according to claim 5, wherein: the upper end face and the lower end face of the upper die plate are respectively provided with a first boss and a second boss, the first boss is matched with the first cavity in shape and is inserted into the first cavity, the upper die plate is provided with a second accommodating cavity in the middle of the first boss, the upper die core is arranged in the second accommodating cavity, the outer side face of the upper die core is attached to the inner wall of the second accommodating cavity, the upper die core is fixedly connected with an upper connecting plate, and a third cooling air duct is arranged in the upper die plate.
7. The injection mold for one-out-two lead-acid battery cases according to claim 6, wherein: the upper end surface of the lower template is provided with a second cavity matched with the second boss, the second boss is inserted into the second cavity, the lower template is further provided with a supporting plate, the lower mold core penetrates through the supporting plate, and the supporting plate is provided with an overflow groove.
8. The injection mold for one-out-two lead-acid battery cases according to claim 1 or 2, wherein: the lower positioning plate is provided with an opening for the lower mold core to penetrate through, the side wall of the opening is provided with a positioning block for positioning the lower mold core, the positioning block is fixedly connected with the lower fixing plate, the lower positioning plate is fixedly provided with guide posts, and the guide posts penetrate through the lower positioning plate, the lower mold plate, the upper connecting plate and the upper runner mounting plate respectively.
9. The injection mold for one-to-two lead-acid battery cases according to claim 3, wherein: and a fourth cooling air channel is arranged on the lower fixing plate and communicated with the first cooling air channel.
10. The injection mold for one-out-two lead-acid battery cases according to claim 1 or 2, wherein: an upper end cover is fixedly arranged on the upper end face of the upper flow channel mounting plate, the upper end of the pouring pipe extends out of the upper end cover, and a lower end cover is fixedly arranged on the lower end face of the lower fixing plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110343068.XA CN112959617A (en) | 2021-03-30 | 2021-03-30 | One-outlet two-lead-acid battery box injection mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110343068.XA CN112959617A (en) | 2021-03-30 | 2021-03-30 | One-outlet two-lead-acid battery box injection mold |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112959617A true CN112959617A (en) | 2021-06-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110343068.XA Pending CN112959617A (en) | 2021-03-30 | 2021-03-30 | One-outlet two-lead-acid battery box injection mold |
Country Status (1)
| Country | Link |
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| CN (1) | CN112959617A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114454435A (en) * | 2022-01-26 | 2022-05-10 | 山联(长兴)新材料股份有限公司 | Injection molding equipment for inorganic biodegradable tableware and processing method thereof |
-
2021
- 2021-03-30 CN CN202110343068.XA patent/CN112959617A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114454435A (en) * | 2022-01-26 | 2022-05-10 | 山联(长兴)新材料股份有限公司 | Injection molding equipment for inorganic biodegradable tableware and processing method thereof |
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