CN105922471A - Material cutting device and method - Google Patents
Material cutting device and method Download PDFInfo
- Publication number
- CN105922471A CN105922471A CN201610295647.0A CN201610295647A CN105922471A CN 105922471 A CN105922471 A CN 105922471A CN 201610295647 A CN201610295647 A CN 201610295647A CN 105922471 A CN105922471 A CN 105922471A
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- Prior art keywords
- wheel
- longitudinal
- conveyer
- clearly
- cutoff device
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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
- 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
- B29B9/00—Making granules
- B29B9/02—Making granules by dividing preformed material
- B29B9/04—Making granules by dividing preformed material in the form of plates or sheets
Abstract
The invention relates to a material cutting device and method. The material cutting device comprises a conveyer I, a transverse material cutting device body and a longitudinal material cutting device body; and the transverse material cutting device body and the longitudinal material cutting device body are both arranged above the conveyer I. The material cutting device is characterized in that the transverse material cutting device body comprises a transverse cutting wheel and a transverse material clearing wheel in gear connection with the transverse cutting wheel; the longitudinal material cutting device body comprises a longitudinal cutting wheel; longitudinal cutting blades are arranged on the surface of the longitudinal cutting wheel; and longitudinal material clearing wheels are installed on the periphery of the longitudinal cutting wheel and embedded in longitudinal gaps of the longitudinal cutting blades. According to the material cutting device, by clearing away or scraping away materials attached to the surface of the transverse cutting wheel and the surface of the longitudinal cutting wheel, it is guaranteed that cutting is smoothly performed.
Description
Technical field
The present invention relates to a kind of cutoff device and blank method.
Background technology
The preparation of environment-friendly type wood plastic composite is primary raw material mainly by waste or used plastics, agricultural crop straw etc., adds the auxiliary material mixing granulations such as solubilizer, lubricant, plasticizer, colouring agent, and its production technology mainly uses double-screw extruding pelletizing.In the granulation of wood plastic composite, material prepared by double-screw extruding pelletizing equipment has certain temperature and viscosity and in irregular shape, and the particulate material that the wood plastic composite just produced cannot be broken into uniformly by current blank, disintegrating apparatus and diameter is less, enter wood-plastic composite material shaping device with such pellet to be shaped adding man-hour, material skewness can be caused, affect product percent of pass, and former is caused the problems such as the biggest abrasion and destruction.
Chinese patent application publication No. CN 102046294 A discloses the shredding machine of a kind of sheet production particle, and described shredding machine has:
Longitudinal cutting device (1) with the first cutting roller (2) and the second cutting roller (3)；
It is positioned at described longitudinal cutting device (1) transverse cutting device (4) below；
Described first cutting roller (2) has band longitudinal surface (4) and the serrate profile in face (5) adjacent on it, described longitudinal surface (4) tilts to the direction of the longitudinal axis of described first cutting roller (2), and described (5) at least extend with the axis oriented normal of described first cutting roller (2) ground in the range of piecemeal；
Described second cutting roller (3) has band longitudinal surface (6) and the serrate profile in face (7) adjacent on it, described longitudinal surface (6) tilts to the direction of the longitudinal axis of described second cutting roller (3), and described (7) are at least perpendicular to the longitudinal axis of described second cutting roller (3) in the range of piecemeal and extend or at least vertical plane to the longitudinal axis of described second cutting roller (3) reaches 4 degree of extensions in scope piecemeal；
nullThe serrate profile of the serrate profile of wherein said first cutting roller (2) and described second cutting roller (3) be so joined to a depth of penetration (T) so that，At described cutting roller (2，3) on the direction of the longitudinal axis，The longitudinal surface (4) of the serrate profile of described first cutting roller (2) and face (5) are the face (7) of the serrate profile of adjacent described second cutting roller (3) in the range of piecemeal，The blade finally obtained of the longitudinal cutting device (1) thus so formed extends in parallel on the longitudinal direction of described sheet material，At least three in four limits of each bar cut out of wherein said sheet material is at described first cutting roller (2) and the corresponding longitudinal surface (4 of the serrate profile of the second cutting roller (3)，6) and described second cutting roller (3) serrate profile corresponding face (7) between contact，And according to corresponding longitudinal surface (4，6) inclination is guided angularly relative to the respective longitudinal axis of described first cutting roller (2) and the second cutting roller (3)，And according to the blade finally obtained by the longitudinal direction directed parallel along described sheet material，Thus，After described longitudinal cutting device (1)，Each is fed to described transverse cutting device (4) along the longitudinal direction of described sheet material is the most parallel.
Said apparatus uses longitudinal cutting device and transverse cutting device to be particle by plate cutting; it does not accounts for the physico-chemical attributes of sheet material; when sheet material by wood plastic composite etc. have the material of stickiness form time; it is cut when; these materials often can be pasted on cutting wheel; gap between blocking cutting blade, thus affect follow-up cutting.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of cutoff device and blank method, and it can remove the glutinous material of adhesion in time, it is ensured that being smoothed out of cutting.
The present invention includes that conveyer I, horizontal cutoff device and longitudinal cutoff device, horizontal cutoff device and longitudinal cutoff device are all disposed within the top of conveyer I；Described horizontal cutoff device includes laterally cutting wheel and expecting the most clearly wheel with laterally cutting the horizontal of wheel gear connection, described longitudinal cutoff device includes longitudinally cutting wheel, longitudinally cutting wheel surface is provided with longitudinal cutter sheet, longitudinally cutting wheel periphery to be provided with and expect the most clearly wheel, described longitudinal direction is expected clearly in the axial clearance that wheel embeds longitudinal cutter sheet.
The most clear described material wheel connection has motor, and the most clear material wheel does contact campaign along the axis direction of the most clear material wheel under the drive of motor.
The length of the most clear described material wheel is less than or equal to laterally cutting the 1/4 of wheel length.
Described longitudinal cutoff device and horizontal cutoff device set gradually along the conveying direction of conveyer I.
Described longitudinal direction expects that clearly taking turns connection has motor, longitudinal clear material wheel to rotate under the drive of motor, and rotation direction is contrary with the rotation direction longitudinally cutting wheel.
Also include that material pressing device, described material pressing device include being arranged on the pressing plate of conveyer I belt bottom and being arranged on the pressure wheel on conveyer I belt top.
Described pressure wheel periphery is provided with scraper cleaner.
Also including distributing device, material is sent to conveyer I by distributing device.
Described distributing device includes base plate and is arranged on the baffle plate of base plate both sides.
The present invention also provides for a kind of blank method, and step is: being placed on by material on conveyer I, conveyer I carries material, makes the material longitudinal blank of carrying out in no particular order and horizontal blank；The step of longitudinal blank is: the longitudinal direction transporting material to conveyer I and longitudinal cutoff device is cut between wheel, and material is done longitudinally cutting by the longitudinal cutter sheet longitudinally cutting wheel, and the most clear material wheel removes the material sticked in the axial clearance between longitudinal cutter sheet；The step of described horizontal blank is: transport material to conveyer I and laterally cutoff device laterally cut between wheel, material is done transverse cuts by the tooth bar laterally cutting wheel, and the most clear material wheel removes the material sticked between tooth bar.
Material is attached on after longitudinally cutting wheel, and the most clear material wheel of described longitudinal cutoff device does the rotation contrary with the direction of rotation longitudinally cutting wheel, and the material sticked in axial clearance is removed by the most clear material wheel counter-rotating.
Material is attached on after laterally cutting wheel, and material the most clearly is taken turns and done contact campaign along the horizontal clear axis direction expecting wheel under the drive of motor, takes turns the material sticked to the two ends release laterally cutting wheel by laterally cutting.
Present invention additionally comprises cloth and binder step, the step of cloth is: by distributing device, material is evenly distributed on conveyer I；The step of described binder is: transporting material in the gap between pressure wheel and conveyer I, material is pressed into bulk by pressure wheel.
The invention has the beneficial effects as follows, plate material, under the cutting of horizontal cutoff device and longitudinal cutoff device, is cut into granular material by the present invention.Described horizontal cutoff device includes laterally cutting wheel and expecting the most clearly wheel with laterally cutting the horizontal of wheel gear connection, expects that the most clearly taking turns extruding laterally cuts the material sticked in the lateral clearance of wheel, thus removes the material sticked.
Described longitudinal cutoff device includes longitudinally cutting wheel, longitudinally cutting wheel surface is provided with longitudinal cutter sheet, longitudinally cutting wheel periphery to be provided with and expect the most clearly wheel, described longitudinal direction is expected clearly in the axial clearance that wheel embeds longitudinal cutter sheet, and the most clear material wheel strikes off the material sticked in axial clearance.
The present invention laterally cuts wheel by removing or striking off and longitudinally cuts the material that wheel surface sticks, it is ensured that being smoothed out of cutting.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention.
Fig. 2 is the structural representation laterally cutting wheel 4.
Fig. 3 is the partial enlarged drawing of Fig. 2.
Fig. 4 is the axial section structural representation longitudinally cutting wheel 7.
Fig. 5 is the schematic enlarged-scale view of Fig. 4.
In the drawings, 1 conveyer II, 2 chute, 3 conveyers I, 4 are laterally cut wheel, 41 horizontal cutting edges, 42 lateral clearances, 5 are expected the most clearly wheel, 6 expect the most clearly wheel, 7 longitudinally cut wheel, 71 longitudinal cutter sheets, 72 axial clearances, 8 pressing plates, 9 pressure wheels, 10 scraper cleaners, 11 distributing devices, 12 comminutors.
Detailed description of the invention
As it is shown in figure 1, include that conveyer I 3, horizontal cutoff device and longitudinal cutoff device, horizontal cutoff device and longitudinal cutoff device are all disposed within the top of conveyer I 3；Described horizontal cutoff device includes laterally cutting wheel 4 and expecting wheel 5 with laterally cutting the most clear of wheel 4 gears connection, described longitudinal cutoff device includes longitudinally cutting wheel 7, longitudinally cut wheel 7 surface configurations and have longitudinal cutter sheet 71, longitudinally cutting wheel 7 peripheries and be provided with the most clear material wheel 6, described longitudinal direction expects clearly to take turns in the axial clearance 72 of 6 embedding longitudinal cutter sheets 71.
The most clear described material wheel 5 connection has motor, and the most clear material wheel 5 does contact campaign along the axis direction of the most clear material wheel 5 under the drive of motor.
The length of the most clear described material wheel 5 is less than or equal to laterally cutting the 1/4 of wheel 4 length.
Described longitudinal cutoff device and horizontal cutoff device set gradually along the conveying direction of conveyer I 3.
Described longitudinal direction expects that clearly taking turns 6 connections has motor, longitudinal clear material wheel 6 to rotate under the drive of motor, and rotation direction is contrary with the rotation direction longitudinally cutting wheel 7.
Also include that material pressing device, described material pressing device include being arranged on the pressing plate 8 of conveyer I 3 belt bottom and be arranged on the pressure wheel 9 on conveyer I 3 belt top.
Described pressure wheel 9 periphery is provided with scraper cleaner 10, and scraper cleaner 10 can be the scraper plate being fixed on pressure wheel 9 periphery, has certain distance, thus removed by the material scraper being attached on pressure wheel 9 between scraper plate end and pressure wheel 9.
Also including distributing device 11, material is sent to conveyer I 3 by distributing device 11.
Described distributing device 11 includes base plate and is arranged on the baffle plate of base plate both sides.
The present invention also provides for a kind of blank method, and step is: be placed on by material on conveyer I 3, and conveyer I 3 carries material, makes the material longitudinal blank of carrying out in no particular order and horizontal blank；The step of longitudinal blank is: the longitudinal direction transporting material to conveyer I 3 and longitudinal cutoff device is cut between wheel 7, material is done longitudinally cutting by the longitudinal cutter sheet 71 longitudinally cutting wheel 7, the material sticked in the axial clearance 72 between the most clear material wheel 6 removing longitudinal cutter sheet 71；The step of described horizontal blank is: transporting material to conveyer I 3 and laterally cutting of horizontal cutoff device is taken turns between 4, material is done transverse cuts by the tooth bar laterally cutting wheel 4, expects the most clearly the material sticked between wheel 5 removing tooth bars.
Material is attached on after longitudinally cutting wheel 7, and the most clear material wheel 6 of described longitudinal cutoff device does the rotation contrary with the direction of rotation longitudinally cutting wheel 7, and the material sticked in axial clearance 72 is removed by the most clear material wheel 6 counter-rotatings.
Material is attached on after laterally cutting wheel 4, and horizontal clear material is taken turns 5 and done contact campaign along the axis direction of material wheel 5 the most clearly under the drive of motor, takes turns 4 materials sticked to the two ends release laterally cutting wheel 4 by laterally cutting.
Present invention additionally comprises cloth and binder step, the step of cloth is: by distributing device 11, material is evenly distributed on conveyer I 3.
The step of described binder is: transporting material in the gap between pressure wheel 9 and conveyer I 3, material is pressed into bulk by pressure wheel 9.
Use the present invention to carry out blank, be broadly divided into following four step and operate:
1, cloth: exported from comminutor 12 by material, intersperses among conveyer I 3 by distributing device 11, and conveyer I 3 is belt conveyor, and distributing device 11 includes base plate and is arranged on the baffle plate of base plate both sides, makes material be evenly distributed on conveyer I 3.The height of described base plate can adjust up and down.
2, binder: after material is on conveyer I 3, it is sent to pressure wheel 9 position, there is between the belt of pressure wheel 9 and conveyer I 3 gap, and described gap can be adjusted by adjusting the height of pressure wheel 9, pressure wheel 9 and belt squeeze material, be pressed into plate by material.
3, longitudinal blank: pressure wheel 9 sets gradually with longitudinally cutting the wheel 7 conveying direction along conveyer I 3, longitudinally cuts in the gap taken turns between 7 and belt so material enters after being pressed into plate, and plate-like material is cut into strand shape.As shown in Figure 4 and Figure 5, it is serrate profile that described longitudinal direction cuts the surface of wheel 7, and the surface longitudinally cutting wheel 7 is disposed with longitudinal cutter sheet 71, is axial clearance 72 between longitudinal cutter sheet 71, described longitudinal cutter sheet 71 is arranged along the axle center cincture longitudinally cutting wheel 7, and plate material is cut into strand shape.Described longitudinal direction is cut wheel 7 peripheries and is provided with the most clear material wheel 6, described longitudinal direction is expected clearly to take turns in the axial clearance 72 of 6 embedding longitudinal cutter sheets 71, the most clear material wheel 6 surfaces are with gear piece, it can be fixed on a certain position, can also under the drive of motor reverse movement, the direction of reverse movement and longitudinal wheel 7 rotation directions of cutting are contrary, thus remove and be attached on the material in axial clearance 72.
4, horizontal blank: after plate-like material is cut into a strip-shaped materials, enters and laterally cuts between wheel 4 and belt, be cut into granular material.As shown in Figures 2 and 3, laterally cutting wheel 4 surface configurations has horizontal cutting edge 41, indention, is lateral clearance 42 between adjacent transverse cutting edge 41, and horizontal cutting edge 41 is transversely cut the axis parallel of wheel 4 and arranged, silk strip-shaped materials is cut into graininess.Described laterally clear material wheel 5 surfaces are with gear piece, and the most clear material wheel 5 and laterally cut wheel 4 gears and connect, thus laterally cut wheel 4 and passively drive and rotate, the axial length of the most clear described material wheel 5 is laterally cut the axle center length taking turns 4 1/4 or shorter.The most clear material wheel 5 is during rotating, it transversely expects clearly that under the drive of motor the axis direction of wheel 5 does contact campaign, thus the sizing in the lateral clearance 42 laterally cutting wheel 4 can be released to the two ends laterally cutting wheel 4, respectively be provided with one piece of chute at two ends, the material being pushed out slips in belt along chute.It is cut into granular material and enters conveyer II 1 by chute 2, enter next process.
If the material of the present invention is plate-like, the step 1 of the present invention and step 2 can be omitted.The step 3 of the present invention and step 4 can be exchanged, and the most first carry out horizontal blank, then carry out longitudinal blank.
Claims (10)
1. a cutoff device, including conveyer I (3), laterally cutoff device and longitudinal cutoff device, laterally cutoff device and longitudinal cutoff device are all disposed within the top of conveyer I (3), it is characterized in that, described horizontal cutoff device includes laterally cutting wheel (4) and expecting the most clearly to take turns (5) with laterally cutting the horizontal of wheel (4) gear connection, described longitudinal cutoff device includes longitudinally cutting wheel (7), longitudinally cutting wheel (7) surface configuration has longitudinal cutter sheet (71), longitudinally cut wheel (7) periphery to be provided with and expect the most clearly wheel (6), described longitudinal direction expects clearly to take turns in the axial clearance (72) that (6) embed longitudinal cutter sheet (71).
2. cutoff device as claimed in claim 1, is characterized in that, described expect the most clearly to take turns (5) and connects and have motor, expects the most clearly to take turns (5) under the drive of motor along expecting that the most clearly the axis direction taking turns (5) does contact campaign.
3. cutoff device as claimed in claim 1 or 2, is characterized in that, described longitudinal direction is expected clearly to take turns (6) and connected and have motor, expects that the most clearly taking turns (6) rotates under the drive of motor, and rotation direction and longitudinal rotation direction cutting wheel (7) contrary.
4. cutoff device as claimed in claim 1 or 2, is characterized in that, also include that material pressing device, described material pressing device include being arranged on the pressing plate (8) of conveyer I (3) belt bottom and be arranged on the pressure wheel (9) on conveyer I (3) belt top.
5. cutoff device as claimed in claim 4, is characterized in that, described pressure wheel (9) periphery is provided with scraper cleaner (10).
6. cutoff device as claimed in claim 1 or 2, is characterized in that, also include distributing device (11), and material is sent to conveyer I (3) by distributing device (11).
7. a blank method, is characterized in that, step is: be placed on by material on conveyer I (3), and conveyer I (3) carries material, makes the material longitudinal blank of carrying out in no particular order and horizontal blank；The step of longitudinal blank is: the longitudinal direction transporting material to conveyer I (3) and longitudinal cutoff device is cut between wheel (7), material is done longitudinally cutting by the longitudinal cutter sheet (71) longitudinally cutting wheel (7), expects that the most clearly taking turns (6) removes the material sticked in the axial clearance (72) between longitudinal cutter sheet (71)；The step of described horizontal blank is: transport material to laterally cutting between wheel (4) of conveyer I (3) and horizontal cutoff device, and material is done transverse cuts by the tooth bar laterally cutting wheel (4), expects that the most clearly taking turns (5) removes the material sticked between tooth bar.
8. blank method as claimed in claim 7, it is characterized in that, material is attached on after longitudinally cutting wheel (7), the longitudinal direction of described longitudinal cutoff device expects that clearly taking turns (6) does the rotation contrary with the direction of rotation longitudinally cutting wheel (7), expects that the most clearly taking turns (6) counter-rotating removes the material sticked in axial clearance (72).
9. blank method as claimed in claim 7 or 8, it is characterized in that, material is attached on after laterally cutting wheel (4), laterally expect the most clearly to take turns (5) under the drive of motor along expecting that the most clearly the axis direction taking turns (5) does contact campaign, will laterally cut material that wheel (4) sticks to the two ends release laterally cutting wheel (4).
10. blank method as claimed in claim 7 or 8, is characterized in that, present invention additionally comprises cloth and binder step, the step of cloth is: by distributing device (11), material is evenly distributed on conveyer I (3)；The step of described binder is: transporting material in the gap between pressure wheel (9) and conveyer I (3), material is pressed into bulk by pressure wheel (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610295647.0A CN105922471B (en) | 2016-05-06 | 2016-05-06 | A kind of cutoff device and blank method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610295647.0A CN105922471B (en) | 2016-05-06 | 2016-05-06 | A kind of cutoff device and blank method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105922471A true CN105922471A (en) | 2016-09-07 |
| CN105922471B CN105922471B (en) | 2018-03-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610295647.0A Active CN105922471B (en) | 2016-05-06 | 2016-05-06 | A kind of cutoff device and blank method |
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| Country | Link |
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| CN (1) | CN105922471B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108816153A (en) * | 2018-06-22 | 2018-11-16 | 安徽泰瑞生态农业科技发展有限公司 | A kind of fertilizer granulation equipment |
| CN110744741A (en) * | 2019-11-07 | 2020-02-04 | 湖南工业大学 | Double-roller extrusion granulation device |
| CN112958234A (en) * | 2021-01-25 | 2021-06-15 | 吴可金 | Medical film secondary cutting device buckles |
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| FR1159829A (en) * | 1956-09-20 | 1958-07-02 | J F Bas & Cie | Improvements in the control of granulator components for plastics |
| EP0827443B1 (en) * | 1995-05-20 | 1999-02-10 | STOCKHAUSEN GmbH & CO. KG | Process and device for the coarse fragmentation of aqueous polymer gels |
| CN1400088A (en) * | 2001-07-30 | 2003-03-05 | 住友电木株式会社 | Production process and apparatus for thermosetting resin composite material |
| CN101214708A (en) * | 2007-12-29 | 2008-07-09 | 三角轮胎股份有限公司 | Rubber sheet granule cutter |
| CN102046294A (en) * | 2008-05-27 | 2011-05-04 | 自动化塑料机械有限责任公司 | Comminution device for the production of particles from a strip-shaped material |
| CN102430758A (en) * | 2011-12-08 | 2012-05-02 | 孟庆黎 | Lead pig grinding and granulating machine |
| CN202208071U (en) * | 2011-04-28 | 2012-05-02 | 东莞市普凯塑料科技有限公司 | Plastic pelletizer |
| CN204093523U (en) * | 2014-08-21 | 2015-01-14 | 福建省华普新材料有限公司 | A kind of modified paint pulverizer |
| CN205572770U (en) * | 2016-05-06 | 2016-09-14 | 湖南映宏新材料股份有限公司 | Material cutting device |
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Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1159829A (en) * | 1956-09-20 | 1958-07-02 | J F Bas & Cie | Improvements in the control of granulator components for plastics |
| EP0827443B1 (en) * | 1995-05-20 | 1999-02-10 | STOCKHAUSEN GmbH & CO. KG | Process and device for the coarse fragmentation of aqueous polymer gels |
| CN1400088A (en) * | 2001-07-30 | 2003-03-05 | 住友电木株式会社 | Production process and apparatus for thermosetting resin composite material |
| CN101214708A (en) * | 2007-12-29 | 2008-07-09 | 三角轮胎股份有限公司 | Rubber sheet granule cutter |
| CN102046294A (en) * | 2008-05-27 | 2011-05-04 | 自动化塑料机械有限责任公司 | Comminution device for the production of particles from a strip-shaped material |
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| CN204093523U (en) * | 2014-08-21 | 2015-01-14 | 福建省华普新材料有限公司 | A kind of modified paint pulverizer |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108816153A (en) * | 2018-06-22 | 2018-11-16 | 安徽泰瑞生态农业科技发展有限公司 | A kind of fertilizer granulation equipment |
| CN110744741A (en) * | 2019-11-07 | 2020-02-04 | 湖南工业大学 | Double-roller extrusion granulation device |
| CN112958234A (en) * | 2021-01-25 | 2021-06-15 | 吴可金 | Medical film secondary cutting device buckles |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105922471B (en) | 2018-03-16 |
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Effective date of registration: 20180208 Address after: The red Industrial Park Economic Development Zone, Loudi City, Hunan province Xinhua County 417600 Applicant after: Hunan gelinmei Yinghong Resources Recycling Co. Ltd. Address before: A Red Zone Industrial Park of Loudi city in 417600 Hunan County of Xinhua Province Applicant before: Crane boom manufacturing method |
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