CN110576557A - Production process of PP (polypropylene) box for contact lenses - Google Patents
Production process of PP (polypropylene) box for contact lenses Download PDFInfo
- Publication number
- CN110576557A CN110576557A CN201910904455.9A CN201910904455A CN110576557A CN 110576557 A CN110576557 A CN 110576557A CN 201910904455 A CN201910904455 A CN 201910904455A CN 110576557 A CN110576557 A CN 110576557A
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- CN
- China
- Prior art keywords
- box
- collecting
- stirring
- fixedly connected
- contact lenses
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/02—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type
- B29B7/22—Component parts, details or accessories; Auxiliary operations
-
- 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
- B29C45/0053—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor combined with a final operation, e.g. shaping
- B29C45/0055—Shaping
-
- 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
-
- 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
- B29C45/76—Measuring, controlling or regulating
- B29C45/77—Measuring, controlling or regulating of velocity or pressure of moulding material
-
- 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
- B29C45/76—Measuring, controlling or regulating
- B29C45/78—Measuring, controlling or regulating of temperature
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G65/00—Loading or unloading
- B65G65/30—Methods or devices for filling or emptying bunkers, hoppers, tanks, or like containers, of interest apart from their use in particular chemical or physical processes or their application in particular machines, e.g. not covered by a single other subclass
- B65G65/32—Filling devices
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
Abstract
The invention provides a production process of a PP box of a contact lens, which comprises the following steps: collecting raw materials in the step (1); stirring; step (3) injection molding; step (4), demolding and discharging; step (5), collecting and subpackaging: sending the mixture into a dust removal and cleaning collection tool; the clean collecting tool comprises a bottom frame, an operation frame and a controller; a fixed cover is embedded into the top of the operating frame, and a plurality of split charging slideways are sequentially arranged on the fixed cover; the bottom end of each subpackage slide way is positioned in a feeding port of the collecting box, and a first air cylinder, a pressing plate and a forward and reverse rotating motor are arranged in the bottom frame from bottom to top; the output shaft of the positive and negative rotation motor is fixedly connected with the weighing disc, and the weighing disc is sequentially provided with a plurality of collecting boxes matched with the distributing slideways. The invention is safe and sanitary, is simple and convenient to operate, improves the production efficiency and saves the cost.
Description
Technical Field
The invention relates to a production process of a PP box, in particular to a production process of a PP box of a contact lens.
Background
The technology of the PP box of making disposable contact lens at present is imperfect, and the PP box produces wearing and tearing and pollution easily at the in-process of processing, influences the security that the product used, and simultaneously at the in-process staff's of processing intensity of labour is big, needs the transport raw materials to stir, does not have special detection device to carry out timely detection to the PP box after the production is accomplished simultaneously, sees whether reach production standard.
disclosure of Invention
The production process of the PP box for the contact lenses is safe, sanitary and simple and convenient to operate, production efficiency is improved, and cost is saved.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
A production process of a PP box of a contact lens comprises the following steps: collecting raw materials in the step (1): selecting a polypropylene raw material as a raw material;
Stirring in step (2): putting the collected raw materials into a stirring device for stirring and mixing; the time is 25-35 minutes;
step (3), injection molding: feeding the mixed raw materials into an injection molding machine for injection molding;
step (4), demolding and discharging: demolding and discharging the contact lens PP box molded in the injection molding machine;
Step (5), collecting and subpackaging: sending the mixture into a dust removal and cleaning collection tool; the clean collecting tool comprises a bottom frame, an operation frame and a controller; a fixed cover is embedded into the top of the operating frame, and a plurality of split charging slideways are sequentially arranged on the fixed cover; the bottom end of each subpackage slide way is positioned in a feeding port of the collecting box, and a first air cylinder, a pressing plate and a forward and reverse rotating motor are arranged in the bottom frame from bottom to top; an output shaft of the forward and reverse rotating motor is fixedly connected with a weighing disc, and a plurality of collecting boxes matched with the distributing slideways are sequentially arranged on the weighing disc; wherein the bottom of the weighing tray is provided with a weighing sensor; the two ends of the weighing plate are provided with induction pieces, and the supporting plate is provided with a first limit switch and a second limit switch which are matched with the induction pieces; the supporting plate is fixed on the inner wall of the operation frame.
In order to prevent pollution and abrasion caused by a large amount of materials during collection, the PP boxes of the contact lenses after being demoulded and discharged from the injection molding machine are taken out by utilizing a discharge mechanical arm of the injection molding machine, each sucker on the mechanical arm tightly sucks one PP box and then correspondingly sends the PP box into a distribution slide way on a fixed cover, each distribution slide way sequentially slides and sends the materials into a corresponding collection box, the collection boxes are tightly pressed by a pressing rod, displacement is avoided, because the collection boxes are prevented from being smashed and fallen by the materials at the beginning, a first air cylinder drives a weighing disc to ascend, the smashing and falling force is reduced, when a weighing sensor senses a certain weight, a signal is transmitted to a controller, the controller sends an instruction to descend the first air cylinder, in order to ensure that the materials in the collection boxes are uniformly prevented, a forward and reverse rotating motor drives the weighing disc to swing back and forth in a small amplitude, and a sensing piece is matched with, the material in the collecting box is ensured to be uniform; the PP box formed by the injection molding machine can be prevented from being polluted and abraded during collection, and the qualification rate of products is improved.
And (6) randomly taking out one PP box in the same batch, and sending the PP boxes to the detection integrated device for inspection.
The invention is further improved in that: the weighing plate is provided with a plurality of pressing rods for pressing the collecting boxes, so that the collecting boxes are pressed during working, shaking is prevented, and the stability of the structure is improved.
The invention is further improved in that: the integrated detection device comprises a detection table, and a fixed clamp and a weighing instrument are sequentially arranged on the detection table; a sliding rod is arranged above the detection table, a sliding cover is fixed on the sliding rod in a sliding mode, a second air cylinder is arranged on the sliding cover, and an air cylinder shaft of the second air cylinder is fixedly connected with the detection sucker component.
one side of the PP box of the contact lens is placed in a fixed clamp, and a second cylinder drives the fixed clamp to be pressed downwards; and meanwhile, the detection sucker component tightly sucks the upper side of the detection sucker component, the upper end and the lower end of the detection sucker component are in compression fit, so that a worker can conveniently perform length detection and thickness measurement on the PP box of the contact lens, after the measurement is completed, the second cylinder drives the detection sucker component to be extracted from the fixed clamp, the sliding cover slides on the sliding rod to slide right above the weighing instrument, then the second cylinder drives the detection sucker component to move downwards, the detection sucker component releases suction, and the detection sucker component is placed on the weighing instrument to be weighed.
the invention is further improved in that: the stirring device comprises a stirring bin, a supporting seat and a stirring motor; the stirring motor is fixedly connected with a stirring shaft in the stirring bin, and one end of the supporting seat is provided with a track rod; the moving device slides on the track rod and is fixedly connected with a connecting plate, and one end of the connecting plate is fixedly connected with the third air cylinder; and a cylinder shaft of the third cylinder is fixedly connected with the base plate, the charging barrel is fixed on the base plate, and the discharging port penetrates through the base plate to be fixedly connected with the discharging valve. The purchased raw materials are also required to be stirred and then sent into the injection molding machine, the total amount of the raw materials is heavy, the raw materials are firstly introduced into the charging barrel, the moving device slides upwards on the track rod to drive the backing plate to slide, and the matched sliding sleeve is matched with the track rod in a sliding manner, so that the matched sliding sleeve also ascends in the ascending process of the charging barrel, and the stability of the charging barrel is also ensured; when the stirring device ascends to the upper part of the stirring bin, the third cylinder pushes the base plate to move right above the stirring bin, the discharge valve is opened, and raw materials in the charging barrel are sent into the stirring bin, so that manual lifting is avoided.
The invention has the further improvement that the raw material adopts Chinese petrochemical polypropylene F401, the formability is good, the surface gloss of the product is good, the heat resistance is good, the melting point is 164 ~ 170 ℃, the product can be sterilized at the temperature of more than 100 ℃, the product can not deform at 150 ℃ without external force, the embrittlement temperature is-35 ℃, the embrittlement occurs at the temperature of less than-35 ℃, the cold resistance is not as good as that of polyethylene, the chemical stability is good, and the corrosion prevention effect is good.
The invention is further improved in that: wherein the temperature of the charging barrel of the injection molding machine is 210-260 ℃, and the injection pressure is 67mpa, so that the stability of the injection molding pressure and temperature is ensured, and the molding rate is improved.
the invention is further improved in that: the caliber of the upper end of each collecting box is larger than the diameter of the distributing slide way.
The invention is further improved in that: a matching sliding sleeve is arranged on the track rod in a sliding manner, and one end of the matching sliding sleeve is fixedly connected with the charging barrel through a telescopic rod; in order to ensure the safety and stability, the telescopic rod is matched with the base plate to move.
compared with the prior art, the invention has the following beneficial effects because the technology is adopted: the contact lens PP box can be effectively prevented from being worn and polluted during processing, the stability and the working efficiency of operation are improved, and meanwhile, the safety is high.
Drawings
FIG. 1 is a schematic view of a clean collection tool according to the present invention;
FIG. 2 is a schematic view of the support plate of FIG. 1;
FIG. 3 is a schematic view of the structure of the stirring apparatus;
FIG. 4 is a schematic structural view of an integrated detection device;
fig. 5 is a knot schematic of a PP box.
Detailed Description
The invention is further elucidated with reference to the drawings and the detailed description.
As shown in fig. 1-5, the process for producing a PP box for contact lenses of the present example comprises the following steps:
Collecting raw materials in the step (1): selecting a polypropylene raw material as a raw material; the material adopts Chinese petrochemical polypropylene F401.
stirring in step (2): putting the collected raw materials into a stirring device for stirring and mixing; the time is 25-35 minutes; the stirring device comprises a stirring bin 23, a supporting seat 24 and a stirring motor 25; the stirring motor 25 is fixedly connected with a stirring shaft in the stirring bin 23, and one end of the supporting seat 24 is provided with a track rod 26; the moving device 27 slides on the track rod 26 and is fixedly connected with a connecting plate 28, and one end of the connecting plate 28 is fixedly connected with a third air cylinder 29; a cylinder shaft of the third cylinder 29 is fixedly connected with a backing plate 30, the charging barrel 21 is fixed on the backing plate 30, and a discharge port penetrates through the backing plate 30 to be fixedly connected with a discharge valve 31; the track rod 26 is slidably provided with a matching sliding sleeve 32, and one end of the matching sliding sleeve 32 is fixedly connected with the charging barrel 21 through an expansion rod 33.
The purchased raw materials are also required to be stirred and then sent into the injection molding machine, the total amount of the raw materials is heavy, the raw materials are firstly guided into the charging barrel 21, the moving device 27 slides upwards on the track rod 26 to drive the backing plate 30 to slide, and the matching sliding sleeve 32 is matched with the track rod 26 in a sliding manner, so that the matching sliding sleeve 32 also ascends in the ascending process of the charging barrel 21, and the stability of the charging barrel 21 is also ensured; when the stirring bin is lifted, the third cylinder pushes the base plate to move right above the stirring bin, the discharge valve 31 is opened, raw materials in the charging barrel 21 are sent into the stirring bin 23, manual lifting is avoided, and the telescopic rod is matched with the base plate 30 to move so as to guarantee safety and stability.
Step (3), injection molding: feeding the mixed raw materials into an injection molding machine for injection molding; wherein the cylinder temperature of the injection molding machine in the step (3) is 210 ℃ and 260 ℃, and the injection pressure is 67 mpa.
Step (4), demolding and discharging: demolding and discharging the contact lens PP box molded in the injection molding machine;
step (5), collecting and subpackaging: sending the mixture into a dust removal and cleaning collection tool; the clean collecting tool comprises a bottom frame 1, an operation frame 2 and a controller 3; a fixed cover 4 is embedded into the top of the operating frame 2, and a plurality of split charging slideways 5 are sequentially arranged on the fixed cover 4; the bottom end of each subpackage slideway 5 is positioned in a feed inlet of the collecting box 6, and a first air cylinder 7, a pressing plate 8 and a forward and reverse rotating motor 9 are arranged in the bottom frame 1 from bottom to top; an output shaft of the forward and reverse rotating motor 9 is fixedly connected with a weighing disc 10, and a plurality of collecting boxes 6 matched with the distributing slideways 5 are sequentially arranged on the weighing disc 10; wherein the bottom of the weighing plate 10 is provided with a weighing sensor 11; two ends of the weighing plate 10 are provided with induction pieces 12, wherein a first limit switch 14 and a second limit switch 15 which are matched with the induction pieces 12 are arranged on the supporting plate 13; the supporting plate 13 is fixed on the inner wall of the operating frame 1; the weighing plate 10 is provided with a plurality of pressing rods 16 for pressing the collecting box 6; the caliber of the upper end of each collecting box 6 is larger than the diameter of the material distributing slide way 5.
in order to prevent pollution and abrasion caused by a large amount of materials during collection, the PP boxes of the contact lenses after being demoulded and discharged from the injection molding machine are taken out by utilizing a discharge mechanical arm of the injection molding machine, each sucker on the mechanical arm tightly sucks one PP box and then correspondingly sends the PP box into a distribution slide way 5 on a fixed cover 4, each distribution slide way 5 sequentially slides and sends the materials into a corresponding collection box 6, the collection boxes 6 are tightly pressed by a pressing rod 16, displacement cannot be generated, because the collection boxes 6 are prevented from being smashed by the materials at the beginning, a first air cylinder 7 drives a weighing plate 10 to ascend, the smashing force is reduced, when a weighing sensor 11 senses certain weight, a signal is transmitted to a controller 3, the controller 3 sends an instruction to descend the first air cylinder 7, in order to ensure that the materials in the collection boxes 6 are uniformly prevented, a forward and reverse rotation motor 9 drives the weighing plate 10 to swing in a small range from front to back, a sensing piece 12 is matched with, the small amplitude swing is realized, and the uniformity of the materials in the collecting box 6 is ensured; the PP box formed by the injection molding machine can be prevented from being polluted and abraded during collection, and the qualification rate of products is improved.
Step (6), randomly taking out one PP box from the same batch, and sending the PP boxes into a detection integrated device for inspection; the integrated detection device comprises a detection table 17, and a fixed clamp 18 and a weighing instrument 19 are sequentially arranged on the detection table 17; a slide rod 19 is arranged above the detection table 17, a slide cover 20 is fixed on the slide rod 19 in a sliding mode, a second air cylinder 21 is arranged on the slide cover 20, and an air cylinder shaft of the second air cylinder 21 is fixedly connected with a detection sucker component 22.
One side of the PP box of the contact lens is placed in the fixed clamp 18, and the second air cylinder 21 drives the fixed clamp 18 to be pressed downwards; meanwhile, the detection sucker assembly 22 sucks the upper side of the contact lens PP box tightly, the upper end and the lower end of the contact lens PP box are in compression fit, a worker can conveniently perform length detection and thickness measurement on the contact lens PP box, after the measurement is completed, the second cylinder 21 drives the detection sucker assembly 22 to be pulled out of the fixed clamp 18, the sliding cover 20 slides on the sliding rod 19 to slide right above the weighing instrument 19, then the second cylinder 21 drives the detection sucker assembly 22 to move downwards, the detection sucker assembly releases suction, and the detection sucker assembly is placed on the weighing instrument 19 to be weighed.
Claims (8)
1. A production process of a PP box for contact lenses is characterized by comprising the following steps: the method comprises the following steps:
Collecting raw materials in the step (1): selecting a polypropylene raw material as a raw material;
stirring in step (2): putting the collected raw materials into a stirring device for stirring and mixing; the time is 25-35 minutes;
step (3), injection molding: feeding the mixed raw materials into an injection molding machine for injection molding;
Step (4), demolding and discharging: demolding and discharging the contact lens PP box molded in the injection molding machine;
Step (5), collecting and subpackaging: sending the mixture into a dust removal and cleaning collection tool; the clean collecting tool comprises a bottom frame (1), an operation frame (2) and a controller (3); a fixed cover (4) is embedded into the top of the operating frame (2), and a plurality of split charging slideways (5) are sequentially arranged on the fixed cover (4); the bottom end of each split charging slide way (5) is positioned in a feed inlet of the collecting box (6), and a first air cylinder (7), a pressing plate (8) and a positive and negative rotation motor (9) are arranged in the bottom frame (1) from bottom to top; an output shaft of the forward and reverse rotation motor (9) is fixedly connected with a weighing disc (10), and a plurality of collecting boxes (6) matched with the distributing slideways (5) are sequentially arranged on the weighing disc (10); wherein the bottom of the weighing plate (10) is provided with a weighing sensor (11); induction pieces (12) are arranged at two ends of the weighing disc (10), wherein a first limit switch (14) and a second limit switch (15) which are matched with the induction pieces (12) are arranged on the supporting plate (13); the supporting plate (13) is fixed on the inner wall of the operating frame (1);
And (6) randomly taking out one PP box in the same batch, and sending the PP boxes to the detection integrated device for inspection.
2. The process for producing a PP box for contact lenses according to claim 1, wherein: and in the step (5), a plurality of pressing rods (16) for pressing the collecting box (6) are arranged on the weighing disc (10).
3. The process for producing a PP box for contact lenses according to claim 1, wherein: the integrated detection device comprises a detection table (17), and a fixed clamp (18) and a weighing instrument (19) are sequentially arranged on the detection table (17); a sliding rod (19) is arranged above the detection table (17), a sliding cover (20) is fixed on the sliding rod (19) in a sliding mode, a second air cylinder (21) is arranged on the sliding cover (20), and an air cylinder shaft of the second air cylinder (21) is fixedly connected with a detection sucker component (22).
4. The process for producing a PP box for contact lenses according to claim 1, wherein: the stirring device comprises a stirring bin (23), a supporting seat (24) and a stirring motor (25); the stirring motor (25) is fixedly connected with a stirring shaft in the stirring bin (23), and one end of the supporting seat (24) is provided with a track rod (26); the moving device (27) slides on the track rod (26) and is fixedly connected with a connecting plate (28), and one end of the connecting plate (28) is fixedly connected with a third air cylinder (29); and a cylinder shaft of the third cylinder (29) is fixedly connected with a backing plate (30), the charging barrel (21) is fixed on the backing plate (30), and the discharging port penetrates through the backing plate (30) to be fixedly connected with a discharging valve (31).
5. The process for producing a PP box for contact lenses according to claim 1, wherein: the raw material adopts Chinese petrochemical polypropylene F401.
6. The process for producing a PP box for contact lenses according to claim 1, wherein: wherein the cylinder temperature of the injection molding machine in the step (3) is 210 ℃ and 260 ℃, and the injection pressure is 67 mpa.
7. the process for producing a PP box for contact lenses according to claim 1, wherein: the caliber of the upper end of each collecting box (6) is larger than the diameter of the distributing slide way (5).
8. the process for producing a PP box for contact lenses according to claim 4, wherein: the track pole (26) is gone up the slip and is equipped with and connect sliding sleeve (32), connect the one end of connecting sliding sleeve (32) through telescopic link (33) with feed cylinder (21) are connected fixedly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910904455.9A CN110576557B (en) | 2019-09-24 | 2019-09-24 | Production process of PP (polypropylene) box for contact lenses |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910904455.9A CN110576557B (en) | 2019-09-24 | 2019-09-24 | Production process of PP (polypropylene) box for contact lenses |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110576557A true CN110576557A (en) | 2019-12-17 |
| CN110576557B CN110576557B (en) | 2022-01-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910904455.9A Active CN110576557B (en) | 2019-09-24 | 2019-09-24 | Production process of PP (polypropylene) box for contact lenses |
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| CN103974572A (en) * | 2013-02-05 | 2014-08-06 | 宏达国际电子股份有限公司 | Housing of electronic device, method for manufacturing same |
| CN104443463A (en) * | 2014-09-17 | 2015-03-25 | 浙江越溪胶丸有限公司 | Full-sealing type capsule sub-packaging mechanism with de-dusting function |
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| CN207510758U (en) * | 2017-11-27 | 2018-06-19 | 舟山市岱山县晓苏微电机配件厂 | Moulding automatic weighting sack-filling device |
| CN109307495A (en) * | 2018-11-05 | 2019-02-05 | 潍坊路加精工有限公司 | Material size weight measuring equipment |
| CN110182421A (en) * | 2019-01-18 | 2019-08-30 | 德玛克（长兴）自动化系统有限公司 | A kind of unmanned Intelligent Production System of battery plastic case of a plurality of production line |
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|---|---|---|---|---|
| CN1253068A (en) * | 1998-11-02 | 2000-05-17 | 罗姆和哈斯公司 | Method and equipment for forming plastic sheet |
| CN101537677A (en) * | 2008-03-19 | 2009-09-23 | 深圳富泰宏精密工业有限公司 | Manufacturing method of shell and shell therefrom |
| KR101177113B1 (en) * | 2009-05-07 | 2012-08-24 | 양순옥 | A cutting of injection molding width and transfer device |
| CN103974572A (en) * | 2013-02-05 | 2014-08-06 | 宏达国际电子股份有限公司 | Housing of electronic device, method for manufacturing same |
| CN203164136U (en) * | 2013-02-22 | 2013-08-28 | 安徽省郎溪县韩星眼镜有限公司 | Equipment for detecting quality of contact lenses |
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| CN107553803A (en) * | 2017-09-27 | 2018-01-09 | 晋江邦达塑料有限公司 | A kind of full-automatic double-colored one step foaming forming machine |
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| Publication number | Publication date |
|---|---|
| CN110576557B (en) | 2022-01-28 |
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