CN113619165A - Polylactic acid straw tube drawing mechanism and water bath crystallization device - Google Patents
Polylactic acid straw tube drawing mechanism and water bath crystallization device Download PDFInfo
- Publication number
- CN113619165A CN113619165A CN202110910320.0A CN202110910320A CN113619165A CN 113619165 A CN113619165 A CN 113619165A CN 202110910320 A CN202110910320 A CN 202110910320A CN 113619165 A CN113619165 A CN 113619165A
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- Prior art keywords
- straw
- cylinder
- polylactic acid
- water bath
- clamping
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- 239000010902 straw Substances 0.000 title claims abstract description 102
- 229920000747 poly(lactic acid) Polymers 0.000 title claims abstract description 37
- 239000004626 polylactic acid Substances 0.000 title claims abstract description 37
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims description 51
- 238000002425 crystallisation Methods 0.000 title claims description 27
- 230000008025 crystallization Effects 0.000 title claims description 27
- 238000009434 installation Methods 0.000 claims abstract description 8
- 238000010438 heat treatment Methods 0.000 claims description 17
- 239000000463 material Substances 0.000 claims description 6
- 238000007599 discharging Methods 0.000 claims description 2
- 230000008878 coupling Effects 0.000 claims 1
- 238000010168 coupling process Methods 0.000 claims 1
- 238000005859 coupling reaction Methods 0.000 claims 1
- 238000001816 cooling Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000001580 bacterial effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009395 breeding Methods 0.000 description 1
- 230000001488 breeding effect Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 235000013410 fast food Nutrition 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 235000021485 packed food Nutrition 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000008093 supporting effect Effects 0.000 description 1
Images
Classifications
-
- 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
- B29C71/00—After-treatment of articles without altering their shape; Apparatus therefor
- B29C71/02—Thermal after-treatment
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2067/00—Use of polyesters or derivatives thereof, as moulding material
- B29K2067/04—Polyesters derived from hydroxycarboxylic acids
- B29K2067/046—PLA, i.e. polylactic acid or polylactide
-
- 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
- B29L2023/00—Tubular articles
- B29L2023/005—Hoses, i.e. flexible
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Table Equipment (AREA)
Abstract
The invention provides a polylactic acid straw pulling mechanism which comprises a support, an installation rack, a collecting hopper, a conveyor belt mechanism, a driving motor, a straw pulling assembly and a straw clamping assembly.
Description
Technical Field
The invention relates to the technical field of plastic straws, in particular to a polylactic acid straw pulling mechanism and a water bath crystallization device.
Background
Polylactic acid has good biodegradability, can be completely degraded by microorganisms in the nature, is non-toxic and harmless, is a novel biodegradable material, is widely applied to various civil plastic products, packaged food, fast food lunch boxes, straws, non-woven fabrics, industrial and civil fabrics, drug slow-release materials and the like, and when the straw made of polylactic acid is used in an environment of more than 50 ℃ without secondary heating crystallization after molding and before secondary heating crystallization, the straw is easy to soften and deform due to uneven heating, so that the application temperature of the polylactic acid straw is wider, and the polylactic acid straw needs to be subjected to heating crystallization treatment.
In the prior art, a polylactic acid straw is usually heated by adopting a water bath crystallization mode, the straw after the water bath crystallization is finished needs to be taken down from a crystallization device, the temperature of the straw after the water bath crystallization is finished is high, so the straw generally needs to be immersed into cold water again for cooling, but the effect of cooling the cold water is limited, and a certain temperature still exists on the surface of the polylactic acid straw, at the moment, if the straw is taken manually, not only is the situation of scalding easily caused, but also the straw is difficult to arrange when being taken manually, the crystallization operation efficiency of the polylactic acid straw is greatly influenced, the manual operation strength is high, if a machine is adopted, the problems can be solved to a great extent, but the prior art does not report or disclose a device for taking or collecting the straw after the polylactic acid straw is heated and crystallized in a water bath, so a device for taking the straw after the polylactic acid straw is heated and crystallized in a water bath is created, therefore, the production efficiency of the polylactic acid straw is necessary.
Disclosure of Invention
The invention aims to provide a polylactic acid straw drawing mechanism and a water bath crystallization device, which aim to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
the utility model provides a polylactic acid straw tube drawing mechanism, includes support, installation frame, collecting hopper, conveyer belt mechanism, driving motor, tube drawing subassembly and straw centre gripping subassembly, wherein:
the device comprises a support, a mounting rack, a tube drawing assembly, a suction tube clamping assembly, a tube drawing assembly and a tube drawing assembly, wherein the mounting rack is mounted at the upper part of the support;
the mounting device is characterized in that a collecting hopper is fixed on the mounting rack, a conveyor belt mechanism is mounted inside the collecting hopper and located at the lower end of the tube drawing assembly and used for conveying a drawn straw, a driving motor is mounted on the collecting hopper, and the driving motor is coaxially connected with a roller of the conveyor belt mechanism and used for driving the conveyor belt mechanism to rotate.
Preferably, the tube drawing assembly comprises a bottom connecting plate, a cylinder side vertical plate, a cylinder fixing plate, a guide rod cylinder, a button box switch and a pull rod, the cylinder side vertical plate is installed on two sides of the bottom connecting plate, the bottom connecting plate is fixed on an installing rack, the cylinder fixing plate is installed on the side face of the upper end of the cylinder side vertical plate, the two upper ends of the cylinder side vertical plate are connected through the pull rod, the guide rod cylinder is installed on the side face of the cylinder fixing plate, and the button box switch is fixed on the side face of the cylinder side vertical plate and used for controlling the telescopic cylinder and the suction tube clamping assembly to work.
Preferably, straw centre gripping subassembly is by clamping jaw fixed plate, pneumatic finger cylinder, holding frame and grip block, the clamping jaw fixed plate is installed in guide arm cylinder side, pneumatic finger cylinder is installed to clamping jaw fixed plate upper end, all be fixed with the holding frame on two clamping jaws of pneumatic finger cylinder, install the grip block on the holding frame.
Preferably, the clamping jaws of the pneumatic finger cylinder are parallel clamping jaws, clamping grooves are formed in the inner side faces of the clamping plates, the clamping grooves in the two clamping plates are arranged in parallel, and the cross sections of the clamping grooves are semicircular.
Preferably, one end of the collecting hopper, which is far away from the conveyor belt mechanism, is provided with a hopper with the bottom lower than the conveyor belt mechanism.
Preferably, the material collecting hopper at the lower end of the conveying belt mechanism is hollow, the water collecting plate is installed at the lower end of the conveying belt mechanism, and the water collecting plate is arranged in an inclined mode towards the material collecting hopper.
Preferably, the bottom of the hopper of the aggregate bin is provided with a plurality of drain holes.
The invention also provides a polylactic acid straw water bath crystallization device, wherein the water bath crystallization device comprises a pushing pipe mechanism, a water bath heating mechanism and a pipe pulling mechanism, the pushing pipe mechanism is used for installing the polylactic acid straw on the water bath heating mechanism, the water bath heating mechanism is used for performing water bath crystallization on the straw, the pipe pulling mechanism adopts the polylactic acid straw pipe pulling mechanism, and the polylactic acid straw pipe pulling mechanism is installed at the straw feeding position of the water bath heating mechanism and is used for taking down the straw subjected to water bath crystallization and moving the straw into a collecting hopper.
Compared with the prior art, the invention has the beneficial effects that:
according to the invention, the clamping plate is driven to clamp through the pneumatic finger cylinder, so that the suction pipe after water bath crystallization is clamped, the suction pipe is driven to the upper part of the conveyor belt mechanism through the pipe pulling assembly, the clamped suction pipe is loosened by the clamping plate, so that the suction pipe automatically drops onto the conveyor belt mechanism, the suction pipe is conveyed into the collecting hopper through the conveyor belt mechanism, the suction pipe can be automatically pulled, conveyed and collected, and only the suction pipe in the collecting hopper needs to be taken out manually in the later period, so that the suction pipe is greatly convenient to take, the polylactic acid water bath crystallization efficiency is improved, and the injury to workers and the labor intensity of the workers are reduced.
Drawings
FIG. 1 is a three-dimensional schematic view of the overall structure of the present invention;
FIG. 2 is a three-dimensional schematic view of the tube drawing assembly and the pipette clamping assembly of the present invention;
FIG. 3 is a side view of the tube drawing assembly and the pipette clamping assembly of the present invention;
FIG. 4 is a three-dimensional schematic view of the installation of the tube drawing assembly and the installation frame of the present invention;
FIG. 5 is a schematic view of the overall side structure of the present invention.
In the figure: the device comprises a mounting frame 1, a collecting hopper 2, a conveyor belt mechanism 3, a driving motor 4, a pipe drawing assembly 5, a connecting plate at the bottom 501, a vertical plate at the side of a 502 cylinder, a cylinder fixing plate 503, a guide rod cylinder 504, a button box switch 505, a pull rod 506, a straw clamping assembly 6, a clamping jaw fixing plate 601, a pneumatic finger cylinder 602, a clamping frame 603, a clamping plate 604 and a clamping groove 61.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example (b):
referring to fig. 1 to 5, the present invention provides a technical solution:
the utility model provides a polylactic acid straw tube drawing mechanism, includes installation frame 1, collecting hopper 2, conveyer belt mechanism 3, driving motor 4, tube drawing subassembly 5 and straw centre gripping subassembly 6, wherein:
the pipe drawing assembly 5 is installed on the installing rack 1, the pipe drawing assembly 5 is composed of a bottom connecting plate 501, cylinder side vertical plates 502, a cylinder fixing plate 503, a guide rod cylinder 504, a button box switch 505 and a pull rod 506, the cylinder side vertical plates 502 are installed on two sides of the bottom connecting plate 501, the bottom connecting plate 501 is fixed on the installing rack 1, the cylinder fixing plate 503 is installed on the upper end side of the cylinder side vertical plate 502, the upper ends of the two cylinder side vertical plates 502 are connected through the pull rod 506, the pull rod 506 has a good fixing effect and can connect the two cylinder side vertical plates 502 into a whole, so that the cylinder side vertical plates 502 are prevented from shaking, the cylinder side vertical plates are more stable in operation and have a better supporting effect, the guide rod cylinder 504 is installed on the side of the cylinder fixing plate 503, a moving slide block on the guide rod cylinder 504 can do linear movement to drive the clamping jaw fixing plate 601 to do linear movement, the pipe drawing assembly 5 drives the pipe clamping assembly 6 to move to draw out a pipe, and the button box switch 505 is fixed on the side surface of the cylinder side vertical plate 502.
The pipe drawing assembly 5 is provided with a straw clamping assembly 6, the straw clamping assembly 6 consists of a clamping jaw fixing plate 601, a pneumatic finger cylinder 602, a clamping frame 603 and a clamping plate 604, the clamping jaw fixing plate 601 is arranged on the side surface of the guide rod cylinder 504, the pneumatic finger cylinder 602 is arranged at the upper end of the clamping jaw fixing plate 601, the clamping frame 603 is fixed on two clamping jaws of the pneumatic finger cylinder 602, the clamping plate 604 is arranged on the clamping frame 603, the distance between the two clamping jaws of the pneumatic finger cylinder 602 can be changed according to the internal air pressure, when the distance between the clamping jaws is reduced, the distance between the two clamping plates 604 is reduced under the driving of the clamping frame 603, the straw is clamped between the clamping plates 604, the straw is clamped, when the straw is required to be put down, the distance between the two clamping jaws is increased, the distance between the clamping plates 604 is increased, and the straw falls down, the clamping jaws of the pneumatic finger cylinder 602 are parallel clamping jaws, so that the distance between the two clamping plates 604 can be equal everywhere, a straw can be clamped conveniently, the clamping grooves 61 are formed in the inner side surfaces of the clamping plates 604, the clamping grooves 61 in the two clamping plates 604 are arranged in parallel, the cross section of each clamping groove 61 is semicircular, when the straw is clamped, the two clamping plates 604 are close to each other, the two clamping grooves 61 form a circle, the straw can be clamped in the clamping grooves 61, the straw is prevented from deforming during clamping, the button box switch 505 is arranged on the control loops of the guide rod cylinder 504 and the pneumatic finger cylinder 602, and the control of the guide rod cylinder 504 and the pneumatic finger cylinder 602 is realized through the button box switch 505.
A collecting hopper 2 is fixed on the mounting rack 1, a conveying belt mechanism 3 is mounted inside the collecting hopper 2, a hopper with the bottom lower than the conveying belt mechanism 3 is arranged at one end of the collecting hopper 2 away from the conveying belt mechanism 3, a straw is convenient to store, the conveying belt mechanism 3 is positioned at the lower end of a tube drawing assembly 5, after a straw clamping assembly 6 clamps the straw, the tube drawing assembly 5 drives the tube drawing assembly to move above the conveying belt mechanism 3, the straw clamping assembly 6 puts down the straw, the straw falls onto the conveying belt mechanism 3, the conveying belt mechanism 3 conveys the straw into the hopper of the collecting hopper 2 for storage, a driving motor 4 is mounted on the collecting hopper 2, the driving motor 4 is coaxially connected with a roller of the conveying belt mechanism 3 and is used for driving the conveying belt mechanism 3 to rotate, the moving direction of the conveying belt mechanism 3 is the direction A shown in figure 1, the collecting hopper 2 at the lower end of the conveying belt mechanism 3 is hollow, the water collecting plate 7 is installed at the lower end of the conveyor belt mechanism 3, the water collecting plate 7 inclines towards the hopper direction of the collecting hopper 2, certain moisture is arranged on the surface of the straw after water bath crystallization, the moisture is discharged through the drain hole when being accumulated at the bottom in the hopper of the collecting hopper 2, the problem of sanitation such as bacterial breeding caused by excessive moisture accumulation is prevented, and the moisture left on the conveyor belt mechanism 3 by the straw flows onto the water collecting plate 7 under the action of gravity and is discharged through the water collecting plate 7.
The invention also provides a polylactic acid straw water bath crystallization device, wherein the water bath crystallization device comprises a pushing pipe mechanism, a water bath heating mechanism and a pipe pulling mechanism, the pushing pipe mechanism is used for installing the polylactic acid straw on the water bath heating mechanism, the water bath heating mechanism is used for performing water bath crystallization on the straw, the pipe pulling mechanism adopts the polylactic acid straw pipe pulling mechanism, and the polylactic acid straw pipe pulling mechanism is installed at the straw feeding position of the water bath heating mechanism and is used for taking down the straw subjected to water bath crystallization and moving the straw into the collecting hopper 2.
The use principle of the invention is as follows: before the device is used, the device is arranged at the discharging position of a straw of a water bath heating mechanism, an air pump is connected to a guide rod cylinder 504 and a pneumatic finger cylinder 602, when the device works, the pneumatic finger cylinder 602 is controlled to move through a button box switch 505, a clamping plate 604 of a straw clamping assembly 6 is driven to two sides of the straw to be taken down, then the distance of clamping jaws of the pneumatic finger cylinder 602 is shortened through the button box switch 505, the straw is clamped in a clamping groove 61, and the clamping and fixing of the straw are completed;
then the telescopic cylinder 507 is reset, the straw clamping component 6 is driven to be right above the conveyor belt mechanism 3, the pneumatic finger cylinder 602 is controlled to increase the distance of the clamping jaw, the straw falls naturally, and after the straw falls onto the conveyor belt mechanism 3, the conveyor belt mechanism 3 conveys the straws into the hopper of the collecting hopper 2 for storage, the water accumulated in the hopper of the collecting hopper 2 is discharged through the drain holes, the water left by the straws on the conveyor belt mechanism 3 flows onto the water collection sheet 7 under the action of gravity, and is discharged through the water collection sheet 7 although the embodiment of the invention has been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. The utility model provides a polylactic acid straw tube drawing mechanism, includes installation frame (1), collecting hopper (2), conveyer belt mechanism (3), driving motor (4), tube drawing subassembly (5) and straw centre gripping subassembly (6), its characterized in that:
the mounting rack (1) is provided with a tube drawing assembly (5), the tube drawing assembly (5) is provided with a straw clamping assembly (6), the straw clamping assembly (6) is used for clamping and fixing a straw to be drawn, and the tube drawing assembly (5) is used for driving the straw clamping assembly (6) to move to draw the straw;
be fixed with aggregate bin (2) on installation frame (1), the internally mounted of aggregate bin (2) has conveyor belt mechanism (3), conveyor belt mechanism (3) are located the lower extreme of tube drawing subassembly (5) for transport the straw of choosing, install driving motor (4) on aggregate bin (2), the cylinder coaxial coupling of driving motor (4) and conveyor belt mechanism (3) is used for driving conveyor belt mechanism (3) and rotates.
2. The polylactic acid straw drawing mechanism according to claim 1, wherein: tube drawing subassembly (5) comprises bottom connecting plate (501), cylinder side riser (502), cylinder fixed plate (503), guide arm cylinder (504), button box switch (505) and pull rod (506), cylinder side riser (502) are installed to bottom connecting plate (501) both sides, bottom connecting plate (501) are fixed on installation frame (1), cylinder fixed plate (503) are installed to cylinder side riser (502) upper end side, two cylinder side riser (502) upper end is connected through pull rod (506), guide arm cylinder (504) are installed to cylinder fixed plate (503) side, button box switch (505) are fixed in cylinder side riser (502) side for control telescopic cylinder (507) and straw centre gripping subassembly (7) work.
3. The polylactic acid straw drawing mechanism according to claim 2, wherein: straw centre gripping subassembly (6) are by clamping jaw fixed plate (601), pneumatic finger cylinder (602), holding frame (603) and grip block (604), guide arm cylinder (504) side is installed in clamping jaw fixed plate (601), pneumatic finger cylinder (602) is installed to clamping jaw fixed plate (601) upper end, all be fixed with holding frame (603) on two clamping jaws of pneumatic finger cylinder (602), install grip block (604) on holding frame (603).
4. The polylactic acid straw drawing mechanism according to claim 3, wherein: the clamping jaw of pneumatic finger cylinder (602) adopts parallel clamping jaw, the medial surface of grip block (604) is provided with centre gripping groove (61), and relative parallel arrangement of centre gripping groove (61) on two grip blocks (604), the cross-section in centre gripping groove (61) is semi-circular.
5. The polylactic acid straw drawing mechanism according to claim 1, wherein: and one end of the collecting hopper (3) far away from the conveying belt mechanism (3) is provided with a hopper with the bottom lower than the conveying belt mechanism (3).
6. The polylactic acid straw drawing mechanism according to claim 5, wherein: the material collecting hopper (2) at the lower end of the conveying belt mechanism (3) is hollow, the water collecting plate (7) is installed at the lower end of the conveying belt mechanism (3), and the water collecting plate (7) inclines towards the hopper direction of the material collecting hopper (2).
7. The polylactic acid straw drawing mechanism according to claim 5, wherein: and a plurality of drain holes are formed in the bottom of the collecting hopper (2).
8. A polylactic acid straw water bath crystallization device which is characterized in that: the water bath crystallization device comprises a pushing pipe mechanism, a water bath heating mechanism and a pipe pulling mechanism, wherein the pushing pipe mechanism is used for installing a polylactic acid straw on the water bath heating mechanism, the water bath heating mechanism is used for performing water bath crystallization on the straw, the pipe pulling mechanism adopts the polylactic acid straw pipe pulling mechanism according to any one of claims 1-7, and the polylactic acid straw pipe pulling mechanism is installed at the straw discharging position of the water bath heating mechanism and is used for taking down the straw subjected to water bath crystallization and moving the straw into the collecting hopper (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110910320.0A CN113619165A (en) | 2021-08-09 | 2021-08-09 | Polylactic acid straw tube drawing mechanism and water bath crystallization device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110910320.0A CN113619165A (en) | 2021-08-09 | 2021-08-09 | Polylactic acid straw tube drawing mechanism and water bath crystallization device |
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| Publication Number | Publication Date |
|---|---|
| CN113619165A true CN113619165A (en) | 2021-11-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110910320.0A Pending CN113619165A (en) | 2021-08-09 | 2021-08-09 | Polylactic acid straw tube drawing mechanism and water bath crystallization device |
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| Country | Link |
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| CN (1) | CN113619165A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114773873A (en) * | 2022-05-31 | 2022-07-22 | 安徽恒鑫环保新材料有限公司 | Degradable coffee grounds U-shaped pipe and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110861813A (en) * | 2019-12-17 | 2020-03-06 | 北自所（北京）科技发展有限公司 | Pre-pipe drawing device and overturning pre-pipe drawing system |
| CN112721248A (en) * | 2020-12-29 | 2021-04-30 | 安徽恒鑫环保新材料有限公司 | Polylactic acid straw crystallization process |
| CN213766879U (en) * | 2020-11-24 | 2021-07-23 | 广州源甚峰模具设备有限公司 | Self-adaptive pipe drawing device |
-
2021
- 2021-08-09 CN CN202110910320.0A patent/CN113619165A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110861813A (en) * | 2019-12-17 | 2020-03-06 | 北自所（北京）科技发展有限公司 | Pre-pipe drawing device and overturning pre-pipe drawing system |
| CN213766879U (en) * | 2020-11-24 | 2021-07-23 | 广州源甚峰模具设备有限公司 | Self-adaptive pipe drawing device |
| CN112721248A (en) * | 2020-12-29 | 2021-04-30 | 安徽恒鑫环保新材料有限公司 | Polylactic acid straw crystallization process |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114773873A (en) * | 2022-05-31 | 2022-07-22 | 安徽恒鑫环保新材料有限公司 | Degradable coffee grounds U-shaped pipe and preparation method thereof |
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Application publication date: 20211109 |