CN210233946U - Adjustable powder coating screw - Google Patents
Adjustable powder coating screw Download PDFInfo
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- CN210233946U CN210233946U CN201921108659.3U CN201921108659U CN210233946U CN 210233946 U CN210233946 U CN 210233946U CN 201921108659 U CN201921108659 U CN 201921108659U CN 210233946 U CN210233946 U CN 210233946U
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Abstract
The utility model relates to an adjustable powder coating screw, which comprises a screw body, wherein the screw body sequentially comprises a transmission section, a feeding section, a transition section, a shearing section and a fastening piece from left to right; the screw body is a spline shaft, and the spline shaft is evenly distributed with 36 spline teeth along the direction of the central axis thereof; the transmission section is arranged at the left end of the spline shaft and is integrally designed with the spline shaft, the feeding section is provided with a plurality of thread sleeves, and the inner surfaces of the thread sleeves are provided with internal splines of the thread sleeves; the transition section comprises a transition spline sleeve, the outer surface of the transition spline sleeve is in smooth transition, and the inner surface of the transition spline sleeve is provided with an inner spline of the transition spline sleeve; the shearing section comprises a plurality of spiral pieces, the spiral pieces are in an oval design, a through hole is formed in the center of each spiral piece, the surface of each through hole is in a circular tooth shape, and the circular teeth of the through holes correspond to the splines of the spline shafts. The utility model discloses can adjust the angle of the disconnected length of pay-off section and shearing in order to adapt to the production demand to be convenient for local change damage parts.
Description
Technical Field
The utility model relates to a powder coating processing machinery equipment technical field, in particular to powder coating screw rod with adjustable.
Background
In the production process of the powder coating, raw materials need to be melted and extruded by an extruder, and the materials are mutually meshed and extruded by two screws in a double-screw extruder under the melting condition to complete the mixing of the raw materials. In the process, the feeding and shearing processes have very important influence on the final quality of the coating, and the quality to be achieved by different types of coatings has different processing requirements on feeding and shearing in the extrusion process, for example, in the process of producing art powder coatings, the screw pieces of the shearing section are arranged in an angle of 60 degrees, so that the shearing force of the screw on the raw material can be reduced, the auxiliary agent in the raw material is not damaged, the raw material can rapidly pass through the screw cavity and can have certain dispersibility in the screw cavity, and the stable lines and luster of the art powder coatings and the low-gloss powder coatings can be obtained, and the mechanical properties of the art powder coatings and the low-gloss powder coatings can be ensured; when the anticorrosive powder coating is produced, the number of 90-degree angle shearing sections is reduced, the shearing force of the screw on the anticorrosive powder coating can be reduced, the screw is prevented from being crosslinked and solidified on the surface of the screw, the extrusion speed of an extruder can be effectively improved, the possibility of coking of the anticorrosive powder coating due to too-slow extrusion is reduced, the phenomenon that a material blocks a discharge port is avoided, the production efficiency of the coating is greatly improved, meanwhile, unqualified products are reduced, and the production yield is improved.
The traditional double-screw extruder is designed with corresponding special screws according to different products, so that the application range is limited, the feeding section and the screw body are designed into a whole, on one hand, the length of the feeding section cannot be adjusted according to requirements, on the other hand, when part of external threads are damaged in the production process, the screws can only be integrally replaced, so that the resource waste is caused, and the production cost is increased; and the traditional double-screw extruder is difficult to control the precision when adjusting the angle of adjacent screw slices.
The utility model discloses an extrude screw axis as utility model patent that bulletin number is CN204585788U discloses, including two section at least shafts, and two sections shafts pass through bushing, and the screw extrusion strip is established to the shaft surface, shaft and axle sleeve pass through splined connection, this kind of extrude the rotation axis and divide into two parts with the material feeding section with the shearing section, can realize the adjustment of material feeding section and shearing section length or change when ruining to a certain extent through changing material feeding section or shearing section, nevertheless all reach the purpose through changing whole material feeding section or shearing section, and the mode is not nimble enough, and the unable adjustment of flight angle still consumes too many resources, can't reduce manufacturing cost by a wide margin, improves production efficiency.
Therefore, there is a need for further improvements in powder coating screws to address the above-mentioned problems.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a powder coating screw rod with adjustable can adjust with the adaptation production demand to the length of material feeding section and shearing breakage and the angle of shearing to its detachable construction carries out local change when having made things convenient for certain unit article to damage in the production process with reduction in production cost, improves production efficiency.
In order to achieve the purpose of the utility model, the technical proposal of the utility model is that:
an adjustable powder coating screw comprises a screw body, wherein the screw body sequentially comprises a transmission section, a feeding section, a transition section, a shearing section and a fastening piece from left to right; the screw body is a spline shaft, and the spline shaft is evenly distributed with 36 spline teeth along the direction of the central axis of the spline shaft; the transmission section is arranged at the left end of the spline shaft, is integrally designed with the spline shaft and is connected with an external driving mechanism; the feeding section is provided with a plurality of thread sleeves, the inner surfaces of the thread sleeves are provided with internal splines of the thread sleeves, and the thread sleeves are tightly close to the transmission section and are meshed with the splines of the spline shaft in a sleeved mode through the internal splines of the thread sleeves; the transition section comprises a transition spline sleeve, the outer surface of the transition spline sleeve is in smooth transition, the inner surface of the transition spline sleeve is provided with a transition spline sleeve internal spline, and the transition spline sleeve is tightly close to the thread sleeve and is engaged and sleeved on the spline shaft through the transition spline sleeve internal spline and the spline of the spline shaft; the shearing section comprises a plurality of spiral pieces, the spiral pieces are in an oval design, a through hole is formed in the center of each spiral piece, the surface of each through hole is in a circular tooth shape, circular teeth of each through hole correspond to splines of the spline shaft, and the spiral pieces are abutted against the transition spline housing, are meshed with the splines of the spline shaft through the circular teeth of the spiral pieces, are sleeved on the spline shaft, and are tightly pressed and fixed through fasteners.
Further, the splines are of a scalloped design.
Furthermore, the feeding section is formed by combining a plurality of thread sleeves with equal thread pitches.
Furthermore, the feeding section is formed by combining a plurality of thread sleeves with equal helical angles and unequal thread pitches.
Furthermore, the external thread of the thread sleeve is a circular arc thread.
Furthermore, the splines in the threaded sleeve are designed into round teeth corresponding to the splines of the spline shaft, and the number of the spline teeth in the threaded sleeve can be 9, 18 or 36.
Further, the internal splines of the transition spline housing are designed to be round teeth corresponding to the splines of the spline shaft, and the number of the internal splines of the transition spline housing can be 9, 18 or 36.
Compared with the prior art, the utility model has the following advantages:
(1) the adjustable powder coating screw rod of the utility model is of a detachable structure from the feeding section to the fastening piece, and the feeding section and the shearing section are respectively formed by combining a plurality of thread bushing units and a plurality of thread sheet units, thereby not only facilitating the damage of a certain unit in the production process to carry out local replacement, but also facilitating the adjustment of the lengths of the feeding section and the shearing angle according to different materials and production requirements;
(2) the arc thread design of the external thread of the thread sleeve effectively improves the conveying efficiency of materials, thereby improving the production efficiency of extruding the coating;
(3) the utility model relates to a simply, easy to use, application scope is wide to reduced production and maintenance cost, improved production efficiency, can extensively popularize and apply.
Drawings
Fig. 1 is a schematic overall structure diagram of an embodiment of the present invention;
FIG. 2 is a schematic view of a screw structure according to an embodiment of the present invention;
FIG. 3 is a schematic view of a thread bushing according to an embodiment of the present invention;
FIG. 4 is a schematic view of a spiral slice structure according to an embodiment of the present invention;
fig. 5 is an exploded view of an embodiment of the present invention;
reference numerals: spline shaft 1, thread bush 2, transition spline housing 3, flight 4, fastening piece 5.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and specific embodiments.
An adjustable powder coating screw comprises a screw body, wherein the screw body sequentially comprises a transmission section, a feeding section, a transition section, a shearing section and a fastening piece from left to right;
the screw body is a spline shaft 1, 36 spline teeth are evenly distributed on the spline shaft 1 along the direction of the central axis of the spline shaft, and in order to reduce stress concentration on the spline and improve the load capacity of the spline, the spline is designed into round teeth;
the transmission section is arranged at the left end of the spline shaft 1, is integrally designed with the spline shaft 1 and is connected with an external driving mechanism, and when the transmission section is driven, the transmission section can rotate clockwise or anticlockwise so as to drive the whole screw to rotate in the same direction;
the feeding section is provided with a plurality of thread sleeves 2, so that partial threads can be partially replaced when being damaged in the production process, meanwhile, in order to improve the conveying efficiency of materials, the external threads of the thread sleeves 2 are designed to be circular-arc threads, further, the feeding section can select the thread sleeves 2 with equal or different screw pitches and equal spiral angles to be freely combined according to production requirements, the inner surface of each thread sleeve 2 is provided with a thread sleeve internal spline, the thread sleeve internal spline is designed to be a circular tooth corresponding to the spline of the spline shaft 1, the number of the splines in each thread sleeve can be 9, 18 or 36, and the thread sleeves 2 are closely sleeved on the spline shaft 1 by meshing of the thread sleeves internal splines and the splines of the spline shaft 1;
the transition section comprises a transition spline housing 3, the outer surface of the transition spline housing 3 is in smooth transition, the inner surface of the transition spline housing is provided with transition spline housing internal splines, the transition spline housing internal splines are designed to be round teeth corresponding to the splines of the spline shaft 1, the number of the transition spline housing internal splines can be 9, 18 or 36, and the transition spline housing 3 is closely abutted against the thread housing 2 and is in sleeve joint with the spline of the spline shaft 1 through the engagement of the transition spline housing internal splines and the splines of the spline shaft 1;
the shearing section comprises a plurality of spiral pieces 4, the spiral pieces 4 are designed in an oval shape, a through hole is formed in the center of each spiral piece 4, the surface of each through hole is in a circular tooth shape, circular teeth of the through hole correspond to splines of the spline shaft 1, the design of the through hole enables the spiral pieces 4 to adjust the shearing angle in a unit of 10 degrees, namely, the angle between adjacent spiral pieces 4 is adjusted to be 10 degrees, 20 degrees, 30 degrees, 40 degrees, 50 degrees, 60 degrees, 70 degrees, 80 degrees or 90 degrees according to the shearing requirements of corresponding products, the spiral pieces 4 are sleeved on the spline shaft 1 by meshing the circular teeth of the spiral pieces 4 and the splines of the spline shaft 1 closely to the transition spline housing 3, and are tightly propped and fixed by fasteners.
The working principle is as follows: the utility model discloses a powder coating screw rod with adjustable can adjust the material feeding section and cut disconnected length and cut the angle of cutting off through dismouting thread bush 2 and flight 4 according to the needs of production to adapt to different materials and application demand, the screw rod that will adjust is connected with the drive structure of extruder through the transmission section, under outside actuating mechanism's drive, clockwise or anticlockwise rotation of transmission section, thereby drive the screw rod body syntropy and rotate, at this moment, the material is through the material feeding section, the changeover portion is delivered to and is cut disconnected and cut the discharge gate that extrudees to the extruder.
While the preferred embodiments of the present invention have been described in detail, it will be understood by those skilled in the art that the invention is not limited to the embodiments disclosed, but is capable of numerous equivalents and substitutions without departing from the spirit of the invention, the equivalents and substitutions being limited only by the scope of the appended claims.
Claims (7)
1. An adjustable powder coating screw is characterized by comprising a screw body, wherein the screw body sequentially comprises a transmission section, a feeding section, a transition section, a shearing section and a fastening piece from left to right; the screw body is a spline shaft, and the spline shaft is evenly distributed with 36 spline teeth along the direction of the central axis of the spline shaft; the transmission section is arranged at the left end of the spline shaft, is integrally designed with the spline shaft and is connected with an external driving mechanism; the feeding section is provided with a plurality of thread sleeves, the inner surfaces of the thread sleeves are provided with internal splines of the thread sleeves, and the thread sleeves are tightly close to the transmission section and are meshed with the splines of the spline shaft in a sleeved mode through the internal splines of the thread sleeves; the transition section comprises a transition spline sleeve, the outer surface of the transition spline sleeve is in smooth transition, the inner surface of the transition spline sleeve is provided with a transition spline sleeve internal spline, and the transition spline sleeve is tightly close to the thread sleeve and is engaged and sleeved on the spline shaft through the transition spline sleeve internal spline and the spline of the spline shaft; the shearing section comprises a plurality of spiral pieces, the spiral pieces are in an oval design, a through hole is formed in the center of each spiral piece, the surface of each through hole is in a circular tooth shape, circular teeth of each through hole correspond to splines of the spline shaft, and the spiral pieces are abutted against the transition spline housing, are meshed with the splines of the spline shaft through the circular teeth of the spiral pieces, are sleeved on the spline shaft, and are tightly pressed and fixed through fasteners.
2. The adjustable powder coating screw of claim 1, wherein the spline of the spline shaft is of a scalloped design.
3. The adjustable powder coating screw of claim 1, wherein the feeding section is formed by combining a plurality of thread sleeves with equal pitch.
4. The adjustable powder coating screw of claim 1, wherein the feed section is formed by combining a plurality of thread sleeves having equal helix angles and different thread pitches.
5. The adjustable powder coating screw according to claim 3 or 4, wherein the external thread of the thread bushing is a circular arc thread.
6. The adjustable powder coating screw of claim 1, wherein the splines in the threaded sleeve are of a scalloped design corresponding to the splines of the splined shaft, and the number of splines in the threaded sleeve can be 9, 18 or 36.
7. The adjustable powder coating screw according to claim 1, wherein the internal spline of the transitional spline housing is designed with round teeth corresponding to the splines of the spline shaft, and the number of the internal spline teeth of the transitional spline housing can be 9, 18 or 36.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921108659.3U CN210233946U (en) | 2019-07-15 | 2019-07-15 | Adjustable powder coating screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921108659.3U CN210233946U (en) | 2019-07-15 | 2019-07-15 | Adjustable powder coating screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210233946U true CN210233946U (en) | 2020-04-03 |
Family
ID=69991139
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921108659.3U Active CN210233946U (en) | 2019-07-15 | 2019-07-15 | Adjustable powder coating screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210233946U (en) |
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2019
- 2019-07-15 CN CN201921108659.3U patent/CN210233946U/en active Active
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