CN110271163B - Screw extruder gear box assembly and screw extruder - Google Patents
Screw extruder gear box assembly and screw extruder Download PDFInfo
- Publication number
- CN110271163B CN110271163B CN201910640142.7A CN201910640142A CN110271163B CN 110271163 B CN110271163 B CN 110271163B CN 201910640142 A CN201910640142 A CN 201910640142A CN 110271163 B CN110271163 B CN 110271163B
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- screw
- hole
- output shaft
- rear end
- screw extruder
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Links
- 230000007704 transition Effects 0.000 claims abstract description 34
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 45
- 238000009434 installation Methods 0.000 claims description 5
- 230000000149 penetrating effect Effects 0.000 claims description 4
- 239000000463 material Substances 0.000 description 6
- 239000000306 component Substances 0.000 description 5
- 239000002994 raw material Substances 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000036316 preload Effects 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/252—Drive or actuation means; Transmission means; Screw supporting means
- B29C48/2526—Direct drives or gear boxes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H37/00—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00
- F16H37/12—Gearings comprising primarily toothed or friction gearing, links or levers, and cams, or members of at least two of these types
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The invention discloses a gear box assembly of a screw extruder and the screw extruder. The screw extruder gearbox assembly comprises a box body, a screw, a transition rod, an output shaft and an end cover assembly, wherein the front end of the screw is provided with a thrust screw, and the rear end of the screw is provided with a positioning neck; the transition rod is detachably connected to the rear end of the screw rod; the output shaft is arranged on the box body, a through hole is formed in the output shaft along the axial direction, the screw rod and the transition rod can penetrate into or out of the through hole from the rear end of the output shaft, the thrust screw can penetrate out of the front end of the through hole, and the positioning neck can be detachably connected to the hole wall of the through hole through the key; an end cap assembly is removably mounted to the rear end of the output shaft to axially position the transition rod and the screw. The screw rod can penetrate in the through-hole or take out from the through-hole from the rear end of output shaft, does not need to dismantle a large amount of auxiliary line equipment in the feed inlet department of receiving equipment, can dismantle transition rod and screw rod in proper order moreover, the easy dismounting of screw rod.
Description
Technical Field
The invention relates to a screw extruder gear box assembly and a screw extruder.
Background
The screw extruder is widely applied equipment in the plastic rubber industry, and can fully plasticize and uniformly mix materials by means of pressure and shearing force generated by rotation of a screw, so that the screw extruder is key equipment affecting product quality.
The gear box is the power transmission component of the screw extruder device. The screw is a core component in the screw extruder and is a wearing part, the user needs to replace the screw every 1-2 years, and the screw is also periodically disassembled during the period to maintain and repair the screw. The step of disassembling the screw of the traditional screw extruder is as follows: firstly, disassembling pins on a machine barrel of a screw extruder, opening a material mixing inlet of a receiving device in front of the machine barrel, and then ejecting the screw forward by a jack from the back of a gear box. In order to meet a certain amount of disassembly space, a large amount of auxiliary line equipment at the outlet end of the screw extruder, such as a film cooling system and the like, are required to be disassembled, so that time and labor are wasted; and because the screw is long and heavy, large lifting equipment is required.
Disclosure of Invention
The invention aims to provide a screw extruder gearbox assembly and a screw extruder, which can reduce the workload in the process of maintaining a screw.
In order to achieve the purpose, on one hand, the invention adopts the following technical scheme:
a screw extruder gearbox assembly comprising:
A case;
the front end of the screw is provided with a thrust screw, and the rear end of the screw is provided with a positioning neck;
a transition rod detachably connected to a rear end of the screw;
The output shaft is arranged on the box body, a through hole is formed in the box body along the axial direction, the screw rod and the transition rod can penetrate into or out of the through hole from the rear end of the output shaft, the thrust screw can penetrate out of the front end of the through hole, and the positioning neck can be detachably connected to the hole wall of the through hole through a key;
An end cap assembly removably mounted to the rear end of the output shaft to axially position the transition rod and the screw.
In one embodiment, a washer is disposed between the transition rod and the rear end of the screw.
In a specific embodiment, an inner hole shaft shoulder is arranged on the inner wall of the through hole, an outer wall shaft shoulder is arranged on the outer wall of the transition rod, and the inner hole shaft shoulder is used for axially positioning the outer wall shaft shoulder.
In a specific embodiment, the transition rod is of a hollow structure with two open ends, an installation part is arranged on the inner wall of the transition rod, and a bolt penetrates through the installation part and is connected with the rear end of the screw rod.
In a specific embodiment, the hole wall at the rear end of the through hole is provided with an internal thread, the end cover assembly comprises a threaded sleeve and a rear cover, the threaded sleeve is in threaded connection with the internal thread at the rear end of the through hole, and the rear cover is connected with the rear end of the threaded sleeve.
In a specific embodiment, the rear cover is provided with a first stop groove, the corresponding position of the output shaft is provided with a second stop groove, and the stop block is clamped in the first stop groove and the second stop groove.
In a specific embodiment, the rear cover is provided with a connector, the connector is in threaded connection with the rear cover, the connector is provided with a water inlet and a water return port, the water inlet is communicated with the circulating water channel on the screw rod through a water inlet pipe, and the water return port is communicated with the circulating water channel on the screw rod through a water return pipe; the water inlet pipe is arranged in the water return pipe in a penetrating way, or the water return pipe is arranged in the water inlet pipe in a penetrating way.
In a specific embodiment, a flat key is connected to the outer wall of the positioning neck, and a flat key groove for accommodating the flat key is correspondingly arranged on the hole wall of the through hole.
In a specific embodiment, a bevel gear is arranged on the outer wall of the output shaft, two ends of the output shaft are respectively supported on the box body through aligning bearings, the middle part of the output shaft is supported on the box body through a thrust bearing, and axial pretightening force is provided for the thrust bearing when the bevel gear rotates.
On the other hand, the invention adopts the following technical scheme:
A screw extruder comprising the screw extruder gearbox assembly of any one of the preceding claims.
The beneficial effects of the invention are as follows:
According to the screw extruder gearbox assembly and the screw extruder, after the end cover assembly is disassembled, the screw can be penetrated into the through hole from the rear end of the screw output shaft or can be pulled out from the through hole, a large number of auxiliary line equipment at the feed inlet of the material receiving equipment is not required to be disassembled, and the screw is more convenient to disassemble and assemble; and because the transition rod is arranged between the screw rod and the end cover assembly, the length and the weight of the screw rod are reduced relative to those of the screw rod in the prior art, the transition rod and the screw rod can be disassembled in sequence, and the disassembly and assembly of the screw rod are further simplified.
Drawings
FIG. 1 is a schematic view of a screw extruder according to an embodiment of the present invention;
FIG. 2 is a schematic view of the structure of a screw extruder gearbox assembly provided in an embodiment of the present invention;
FIG. 3 is a partial enlarged view at A in FIG. 2
FIG. 4 is a schematic structural view of an output shaft according to an embodiment of the present invention;
FIG. 5 is a cross-sectional view taken along the direction B-B in FIG. 4;
Fig. 6 is a top view along fig. 4.
Reference numerals:
100. a gear box; 200. a screw; 300. a barrel; 400. a feed inlet of the receiving device; 500. auxiliary line equipment; 210. a thrust screw; 220. positioning the neck;
101. A case; 102. an input shaft; 103. a first-stage reduction gear shaft; 104. a primary reduction gear; 105. a secondary reduction gear shaft; 106. a secondary reduction gear; 107. an output shaft; 108. an output gear; 109. aligning the bearing; 110. a thrust bearing; 111. a feed gear; 112. a speed ratio gear; 113. a transition rod; 115. a through hole; 116. a key; 117. a gasket; 118. a mounting part; 119. a bolt; 120. a water inlet sleeve;
1141. a threaded sleeve; 1142. a rear cover; 1143. a first stop groove; 1144. a second stop groove; 1145. a stopper; 1146. a joint; 1147. a water inlet pipe, 1148 and a water return pipe;
1151. a key slot; 1152. an inner hole shaft shoulder; 1153. and (5) an internal thread.
Detailed Description
The technical scheme of the invention is further described below by the specific embodiments with reference to the accompanying drawings.
In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. 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 devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. The terms "first," "second," "third," and the like are used merely to distinguish between descriptions and are not to be construed as indicating or implying relative importance.
One embodiment of the present invention provides a screw extruder, preferably a single screw extruder. As shown in fig. 1, the screw extruder includes a screw extruder gearbox assembly including a gearbox 100 and a screw 200. The discharge port of the screw extruder gear box assembly is positioned at the feed port 400 of the receiving apparatus to feed the feed port 400 of the receiving apparatus. The number of the screw extruder gear box components is selected according to the number of the raw material types required by the material receiving equipment, for example, when only one raw material is required, the feeding port 400 of the material receiving equipment is provided with one set of screw extruder gear box components, and when at least two raw materials are required, the feeding port 400 of the material receiving equipment is provided with at least two sets of screw extruder gear box components.
As shown in fig. 2, the gear box 100 includes a box body 101, and an input shaft 102, at least one reduction gear shaft, and an output shaft 107 are disposed in parallel on the box body 101. In this embodiment, two reduction gear shafts are taken as an example, and the two reduction gear shafts are the primary reduction gear shaft 103 and the secondary reduction gear shaft 105, respectively, although one or more reduction gear shafts may be used in other embodiments. The input shaft 102, the primary reduction gear shaft 103, the secondary reduction gear shaft 105, and the output shaft 107 are supported by bearings on the casing 101, respectively, and the input shaft 102 is connected to the screw 200. Specifically, a primary reduction gear 104 is provided on the primary reduction gear shaft 103, a secondary reduction gear 106 is provided on the secondary reduction gear shaft 105, and an output gear 108 is provided on the output shaft 107. The primary reduction gear 104, the secondary reduction gear 106, and the output gear 108 may each be, but are not limited to, fixedly coupled to their respective shafts by keys. The input shaft 102 is meshed with a primary reduction gear 104, the primary reduction gear shaft 103 is meshed with a secondary reduction gear 106, and the secondary reduction gear shaft 105 is meshed with an output gear 108. The input shaft 102 drives the output shaft 107 and the screw 200 to rotate through the reduction gear shafts of the respective stages and the reduction gears.
Optionally, the output gear 108 is a helical gear, two ends of the output shaft 107 are respectively supported on the box 101 through a aligning bearing 109, the middle part of the output shaft 107 is supported on the box 101 through a thrust bearing 110, the aligning bearing 109 and the thrust bearing 110 are preferably but not limited to roller bearings, and the middle thrust bearing 110 does not play a supporting role and is only used for bearing the axial thrust of the screw 200. The bevel gear is located between the thrust bearing 110 and the self-aligning bearing 109 at the rear end of the output shaft 107, and the axial force provided by the bevel gear when operating is directed to the self-aligning bearing 109 at the rear end of the output shaft 107 to provide axial preload to the thrust bearing 110.
The front end of the output shaft 107 is also preferably, but not limited to, provided with a feeding gear 111 integral with the output shaft 107, so that concentricity of the feeding gear 111 axis and the output shaft 107 axis can be ensured. The feeding gear 111 is engaged with the speed ratio gear 112 to realize feeding.
In order to solve the problem of difficult disassembly of the screw 200 in the prior art, as shown in fig. 2 to 5, a thrust screw 210 is provided at the front end of the screw 200, a positioning neck 220 is provided at the rear end of the screw 200, the outer diameter of the thrust screw 210 is smaller than the outer diameter of the positioning neck 220, and a transition rod 113 is detachably connected to the rear end of the screw 200. The transition rod 113 is preferably, but not limited to, a hollow structure with two open ends to reduce weight and facilitate the installation of other components. The output shaft 107 is provided with a through hole 115 along the axial direction, the screw rod 200 and the transition rod 113 can be penetrated into the through hole 115 from the rear end of the output shaft 107 or pulled out from the through hole 115, the thrust screw 210 can be penetrated out from the front end of the through hole 115, the positioning neck 220 can be detachably connected to the wall of the through hole 115 through the key 116, and the end cover assembly is detachably arranged at the rear end of the output shaft 107 so as to prop against the transition rod 113 and axially position the transition rod 113 and the screw rod 200.
Optionally, a key 116 is circumferentially attached to the outer wall of the positioning neck 220. The number of keys 116 is preferably, but not limited to, at least two, and the keys 116 are preferably, but not limited to, uniformly circumferentially disposed. The keys 116 are preferably, but not limited to, flat keys. The key 116 is preferably, but not limited to, removably attached to the positioning neck 220 by a bolt 119 connection or the like. The key groove 1151 for accommodating the key 116 is correspondingly arranged on the inner wall of the through hole 115, the key 116 and the key groove 1151 are axially arranged, the front end of the key groove 1151 is provided with a groove wall for axially positioning the front end of the key 116, so that the thrust screw 210 is allowed to penetrate out of the front end of the through hole 115, meanwhile, the output shaft 107 and the positioning neck 220 are connected through the key 116, so that the positioning neck 220 can be axially positioned, the structure is simple, the processing is convenient, the key groove 1151 has an axial positioning function on the screw 200, and the torque can be effectively transmitted, and the concentricity of the screw 200 and the output shaft 107 can be ensured.
According to the screw extruder gearbox assembly provided by the embodiment, after the end cover assembly is disassembled, the screw 200 can be inserted into the through hole 115 from the rear end of the output shaft 107 and the screw 200 can be pulled out of the output shaft 107 from the through hole 115, so that a large number of auxiliary line devices 500 at the feeding port 400 of the machine barrel 300 and the receiving device are not required to be disassembled, and the screw 200 is more convenient to disassemble and assemble; moreover, as the transition rod 113 is arranged between the screw rod 200 and the end cover assembly, the length and the weight of the screw rod 200 relative to the screw rod 200 in the prior art are reduced, and the screw rod 200 and the transition rod 113 can be detached in sequence, so that the disassembly and assembly of the screw rod 200 are further simplified.
As shown in fig. 3, a washer 117 is provided between the transition rod 113 and the rear end of the screw 200. The axial positioning of the screw 200 can be ensured by selecting washers 117 of different thicknesses. An inner hole shoulder 1152 is provided on the inner wall of the through hole 115, and an outer wall shoulder is provided on the outer wall of the transition rod 113, and the inner hole shoulder 1152 is used for axially positioning the outer wall shoulder, thereby axially positioning the transition rod 113 and the screw 200. The detachable connection between the transition rod 113 and the screw 200 is not limited, and for example, a mounting portion 118 is provided on an inner wall of the transition rod 113, and a bolt 119 is connected to a rear end of the screw 200 through the mounting portion 118.
As shown in fig. 2 and 4, an internal thread 1153 is provided on a hole wall at a rear end of the through hole 115, the end cap assembly includes a threaded sleeve 1141 and a rear cap 1142, the threaded sleeve 1141 is a hollow structure with two open ends, an external thread matched with the internal thread 1153 is provided on an outer wall of the threaded sleeve 1141, the threaded sleeve 1141 is connected to a rear end of the through hole 115 through the internal thread 1153 and the external thread, and the rear cap 1142 is connected to a rear end of the threaded sleeve 1141 to cap a rear end of the threaded sleeve 1141. The internal threads 1153 and external threads are preferably, but not limited to, trapezoidal threads. The threaded sleeve 1141 is in threaded connection with the output shaft 107, so that the transmission between the screw 200 and the output shaft 107 is smoother and more reliable.
The rear cover 1142 is not limited in the manner of mounting, for example, the rear cover 1142 is attached to the threaded sleeve 1141 by the bolt 119. The rear cover 1142 is provided with a first stop groove 1143, and the corresponding position of the output shaft 107 is provided with a second stop groove 1144, and the stop block 1145 is locked in the first stop groove 1143 and the second stop groove 1144, so as to further prevent the threaded sleeve 1141 from rotating relative to the output shaft 107.
As shown in fig. 2 and 4, a connector 1146 is disposed on the rear cover 1142, the connector 1146 is screwed on the rear cover 1142, a water inlet and a water return port are disposed on the connector 1146, the water inlet is communicated with a water inlet pipe 1147, the water return port is communicated with a water return pipe 1148, the water inlet pipe 1147 and the water return pipe 1148 are respectively communicated with a circulating water channel on the screw 200, and the water inlet pipe 1147 is penetrated in the water return pipe 1148. The return pipe 1148 and the rear cover 1142 may be connected by screw, but are not limited thereto. In order to ensure tightness, a water inlet sleeve 120 is arranged at the rear end of the screw 200, and one end of a water return pipe 1148 penetrates into the water inlet sleeve 120. The water intake sleeve 120 is preferably, but not limited to, threaded with the screw 200. A sealing ring is preferably, but not limited to, provided between the water inlet jacket 120 and the screw 200. A sealing ring is preferably, but not limited to, arranged between the water inlet sleeve 120 and the water return sleeve.
In other ways, the positions of the water inlet pipe 1147 and the water return pipe 1148 may be interchanged, that is, the water return pipe 1148 is inserted into the water inlet pipe 1147, and the water inlet pipe 1147 and the rear cover 1142 are connected by threads.
The technical principle of the present invention is described above in connection with the specific embodiments. The description is made for the purpose of illustrating the general principles of the invention and should not be taken in any way as limiting the scope of the invention. Other embodiments of the invention will be apparent to those skilled in the art from consideration of this specification without undue burden.
Claims (7)
1. A screw extruder gearbox assembly, comprising:
A case (101);
the front end of the screw (200) is provided with a thrust screw (210), and the rear end of the screw is provided with a positioning neck (220);
The transition rod (113) is detachably connected to the rear end of the screw (200), a gasket (117) is arranged between the transition rod (113) and the rear end of the screw (200), the transition rod (113) is of a hollow structure with two open ends, an installation part (118) is arranged on the inner wall of the transition rod (113), a bolt (119) passes through the installation part (118) to be connected with the rear end of the screw (200), and the bolt (119) is connected to the edge position of the rear end surface of the screw (200);
The output shaft (107) is arranged on the box body (101) and is provided with a through hole (115) along the axial direction, the screw (200) and the transition rod (113) can penetrate into or out of the through hole (115) from the rear end of the output shaft (107), the thrust screw (210) can penetrate out of the front end of the through hole (115), the positioning neck (220) can be detachably connected to the hole wall of the through hole (115) through a key (116), an inner hole shoulder (1152) is arranged on the inner wall of the through hole (115), an outer wall shoulder is arranged on the outer wall of the transition rod (113), and the inner hole shoulder (1152) axially positions the outer wall shoulder;
An end cap assembly removably mounted to the rear end of the output shaft (107) to axially position the transition rod (113) and the screw (200).
2. The screw extruder gearbox assembly of claim 1 wherein,
An internal thread (1153) is arranged on the hole wall at the rear end of the through hole (115), the end cover assembly comprises a threaded sleeve (1141) and a rear cover (1142), the threaded sleeve (1141) is in threaded connection with the rear end of the through hole (115), and the rear cover (1142) is connected to the rear end of the threaded sleeve (1141).
3. The screw extruder gearbox assembly of claim 2, wherein the rear cover (1142) is provided with a first stop groove (1143), the output shaft (107) is provided with a second stop groove (1144) at a corresponding position, and a stop block (1145) is clamped in the first stop groove (1143) and the second stop groove (1144).
4. The screw extruder gearbox assembly of claim 2 wherein,
The rear cover (1142) is provided with a connector (1146), the connector (1146) is in threaded connection with the rear cover (1142), the connector (1146) is provided with a water inlet and a water return port, the water inlet is communicated with a circulating water channel on the screw (200) through a water inlet pipe (1147), and the water return port is communicated with the circulating water channel on the screw (200) through a water return pipe (1148); the water inlet pipe (1147) is arranged in the water return pipe (1148) in a penetrating way, or the water return pipe (1148) is arranged in the water inlet pipe (1147) in a penetrating way.
5. The screw extruder gearbox assembly of any one of claims 1 to 4, wherein,
The outer wall of the positioning neck (220) is connected with a flat key, and the hole wall of the through hole (115) is correspondingly provided with a flat key groove for accommodating the flat key.
6. The screw extruder gearbox assembly of any one of claims 1 to 4, wherein,
The novel self-aligning gearbox is characterized in that a bevel gear is arranged on the outer wall of the output shaft (107), two ends of the output shaft (107) are respectively supported on the box body (101) through aligning bearings (109), the middle part of the output shaft (107) is supported on the box body (101) through thrust bearings (110), and axial pretightening force is provided for the thrust bearings (110) when the bevel gear rotates.
7. Screw extruder, characterized by comprising a screw extruder gearbox assembly according to any one of claims 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910640142.7A CN110271163B (en) | 2019-07-16 | 2019-07-16 | Screw extruder gear box assembly and screw extruder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910640142.7A CN110271163B (en) | 2019-07-16 | 2019-07-16 | Screw extruder gear box assembly and screw extruder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110271163A CN110271163A (en) | 2019-09-24 |
| CN110271163B true CN110271163B (en) | 2024-07-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910640142.7A Active CN110271163B (en) | 2019-07-16 | 2019-07-16 | Screw extruder gear box assembly and screw extruder |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113524616A (en) * | 2021-06-29 | 2021-10-22 | 三角轮胎股份有限公司 | Screw rod ejection device of rubber extruder |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105673818A (en) * | 2016-04-20 | 2016-06-15 | 南京宁嘉机电有限公司 | Main gearbox assembly of single-screw extruder and application of main gearbox assembly |
| CN109531964A (en) * | 2018-11-27 | 2019-03-29 | 广东金明精机股份有限公司 | Easy-to-dismount screw of plastic extruder disassembly and assembly structure and its method for dismounting |
| CN210233922U (en) * | 2019-07-16 | 2020-04-03 | 南京宁嘉机电有限公司 | Screw extruder gear box assembly and screw extruder |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204196185U (en) * | 2014-10-08 | 2015-03-11 | 江阴齿轮箱制造有限公司 | The Simple detachable device of conveying screw rod |
| CN208816678U (en) * | 2018-10-15 | 2019-05-03 | 镇江李长荣高性能材料有限公司 | A kind of centrifugal blower gas sealing structure |
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2019
- 2019-07-16 CN CN201910640142.7A patent/CN110271163B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105673818A (en) * | 2016-04-20 | 2016-06-15 | 南京宁嘉机电有限公司 | Main gearbox assembly of single-screw extruder and application of main gearbox assembly |
| CN109531964A (en) * | 2018-11-27 | 2019-03-29 | 广东金明精机股份有限公司 | Easy-to-dismount screw of plastic extruder disassembly and assembly structure and its method for dismounting |
| CN210233922U (en) * | 2019-07-16 | 2020-04-03 | 南京宁嘉机电有限公司 | Screw extruder gear box assembly and screw extruder |
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| CN110271163A (en) | 2019-09-24 |
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Effective date of registration: 20190923 Address after: Airport Industrial Park in Jiangsu province Nanjing City Xijing road 211153 Jiangning economic and Technological Development Zone Applicant after: Nanjing Ningjia Electromechanical Co.,Ltd. Applicant after: Nanjing High Precision Transmission Equipment Manufacturing Group Co.,Ltd. Address before: Airport Industrial Park in Jiangsu province Nanjing City Xijing road 211153 Jiangning economic and Technological Development Zone Applicant before: Nanjing Ningjia Electromechanical Co.,Ltd. |
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Effective date of registration: 20200507 Address after: No. 79 Jianheng Road, Jiangning District, Nanjing City, Jiangsu Province, 210012 Applicant after: NANJING HIGH-SPEED & ACCURATE GEAR GROUP Co.,Ltd. Address before: Airport Industrial Park in Jiangsu province Nanjing City Xijing road 211153 Jiangning economic and Technological Development Zone Applicant before: NANJING NINGJIA ELECTROMECHANICAL Co.,Ltd. Applicant before: Nanjing High Precision Transmission Equipment Manufacturing Group Co.,Ltd. |
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