Reducing machine barrel for sheet production
By adopting the combination of a three-stage variable diameter barrel structure and a variable diameter screw, the adaptability and efficiency of the existing barrel structure when processing irregular crushed materials is solved, and a more stable and efficient sheet production is achieved.
Patent Information
- Application Number
- CN202422215798.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-10
- Publication Date
- 2025-06-27
- Estimated Expiration
- 2034-09-10
AI Technical Summary
The existing integrated barrel structure for sheet product processing limits feeding volume and shape adaptability, resulting in problems such as difficulty in cutting, bridge retraction, easy fluctuation, and low extrusion output when processing fluffy and irregularly shaped crushed materials.
The three-stage variable diameter cylinder structure is adopted, including the feed section cylinder, the compression section cylinder and the extrusion section cylinder. Through the cooperation of the inner holes extending from front to back and the variable diameter screw, a detachable conveying channel is formed, which improves the geometric adaptability and plasticization effect of the material.
It improves the stability of the cutting material, feeding quantity and production efficiency, ensures the melt plasticization quality of the material, and is easy to manufacture and maintain, reducing the cost of later maintenance.
Smart Images
Figure CN223030323U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the technical field of plastic product production equipment, and particularly to a variable-diameter barrel for sheet production. Background Art
[0002] Currently, the barrels used for sheet product processing generally adopt an integral barrel structure. The design of the same inner hole diameter limits the feeding volume of the barrel, has poor adaptability to the geometric shape of the material, and is prone to problems such as difficult feeding, bridging and backfeeding, easy fluctuation, and low extrusion output when processing fluffy and irregularly shaped broken materials, resulting in defects in the products to varying degrees. Summary of the Invention
[0003] To solve the above technical problems, the purpose of this application is to provide a variable-diameter barrel for sheet production.
[0004] To achieve the above purpose, this application adopts the following technical scheme: A variable-diameter barrel for sheet production, including a feeding section barrel, a compression section barrel, and an extrusion section barrel. The feeding section barrel, the compression section barrel, and the extrusion section barrel are detachably connected from front to back. A first inner hole extending from front to back is provided in the feeding section barrel, and a feed inlet communicating with the first inner hole is provided on the side wall of the feeding section barrel; A second inner hole extending from front to back is provided in the compression section barrel, and the inner diameter of the second inner hole gradually decreases from front to back. The second inner hole has a maximum inner diameter and a minimum inner diameter; A third inner hole extending from front to back is provided in the extrusion section barrel, and an exhaust port communicating with the third inner hole is provided on the side wall of the extrusion section barrel. The first inner hole, the second inner hole, and the third inner hole are sequentially butted from front to back to form a conveying channel for the variable-diameter screw to rotate; The inner diameter of the first inner hole is equal to the maximum inner diameter, and the inner diameter of the third inner hole is equal to the minimum inner diameter; The compression section barrel corresponds to the segmented section where the outer diameter of the variable-diameter screw changes, and the exhaust port corresponds to the exhaust section of the variable-diameter screw.
[0005] In the above technical scheme, further preferably, a plurality of first grooves are provided on the inner wall surface of the feeding section barrel. The plurality of first grooves are circumferentially spaced apart around the first inner hole, and each of the first grooves extends in the front-rear direction.
[0006] In the above technical scheme, further preferably, a plurality of second grooves are provided on the inner wall surface of the compression section barrel. The plurality of second grooves are circumferentially spaced apart around the second inner hole, and each of the second grooves extends in the front-rear direction. Each of the second grooves corresponds to one of the first grooves.
[0007] In the above technical solution, further preferably, a first cooling groove extending spirally from front to back is formed on the outer wall surface of the compression section cylinder body.
[0008] In the above technical solution, further preferably, a plurality of second cooling grooves are formed on the outer wall surface of the extrusion section cylinder body, the plurality of second cooling grooves are arranged at intervals from front to back, and each of the second cooling grooves extends spirally from front to back.
[0009] The present application has the following beneficial effects compared with the prior art:
[0010] The present application uses a cylinder body with a three-stage combination to improve the stability of feeding, the material feeding capacity and the production efficiency, and ensure the quality of material melting and plasticization; and the three-stage cylinder body is convenient for processing and manufacturing, can independently replace the worn cylinder body, reduce the later maintenance cost, and improve the economic applicability. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] Figure 1 is a schematic structural diagram of a variable-diameter barrel provided by an embodiment of the present application;
[0012] Figure 2 is Figure 1 a schematic structural diagram of the feeding section cylinder body in
[0013] Figure 3 is Figure 1 a schematic structural diagram of the compression section cylinder body in
[0014] Figure 4 is Figure 3 a full sectional view of the compression section cylinder body in
[0015] Figure 5 is Figure 1 a schematic structural diagram of the extrusion section cylinder body in
[0016] Figure 6 is along Figure 5 a sectional view taken along the line A-A in
[0017] Wherein: 100, variable-diameter barrel; 1, feeding section cylinder body; 11, first inner hole; 12, feed inlet; 13, first grooving; 2, compression section cylinder body; 21, second inner hole; 22, second grooving; 23, first cooling groove; 3, extrusion section cylinder body; 31, third inner hole; 32, exhaust port; 33, second cooling groove. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0018] To describe in detail the technical content, structural features, achieved objectives and effects of the application, the technical solutions in the embodiments of the present application will be described below in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. In the following description, for the purpose of explanation, many specific details are set forth to provide a detailed description of various exemplary embodiments or implementations of the invention. However, various exemplary embodiments can also be implemented without these specific details or in the case of one or more equivalent arrangements. In addition, various exemplary embodiments can be different, but not necessarily exclusive. For example, without departing from the inventive concept, the specific shapes, structures and characteristics of the exemplary embodiments can be used or implemented in another exemplary embodiment.
[0019] The present application provides a variable-diameter barrel for sheet production, which is used in cooperation with a variable-diameter screw. As Figure 1 shown, the variable-diameter barrel 100 includes a feeding section barrel 1, a compression section barrel 2 and an extrusion section barrel 3. The feeding section barrel 1, the compression section barrel 2 and the extrusion section barrel 3 are detachably connected from front to back. In the embodiment of the present application, the feeding section barrel 1 and the compression section barrel 2, as well as the compression section barrel 2 and the extrusion section barrel 3, are connected by mechanical fasteners.
[0020] As Figure 1 、 2 、4, 5 shown, a first inner hole 11 extending from front to back is formed in the feeding section barrel 1, a second inner hole 21 extending from front to back is formed in the compression section barrel 2, and a third inner hole 31 extending from front to back is formed in the extrusion section barrel 3; the first inner hole 11, the second inner hole 21 and the third inner hole 31 are sequentially butted from front to back to form a conveying channel for the variable-diameter screw to rotate.
[0021] As Figure 2 shown, a feed port 12 communicating with the first inner hole 11 is formed in the side wall of the feeding section barrel 1, and the feed port 12 is for external raw materials to enter the conveying channel. A plurality of first grooves 13 are formed on the inner wall surface of the feeding section barrel 1. The plurality of first grooves 13 are circumferentially spaced apart around the first inner hole 11, and each first groove 13 extends in the front-rear direction. The plurality of first grooves 13 cooperate with the feeding section of the variable-diameter screw to increase the material intake of the raw materials and improve the production capacity.
[0022] As Figure 3 、 4As shown, the inner diameter of the second inner hole 21 gradually decreases from front to back. The second inner hole 21 has a maximum inner diameter D1 and a minimum inner diameter D2. The inner diameter of the first inner hole 11 is equal to the maximum inner diameter D1, and the inner diameter of the third inner hole 31 is equal to the minimum inner diameter D2. The second inner hole 21 of the compression section cylinder body 2 corresponds to the segmented change in the outer diameter of the variable-diameter screw, and the inner diameter of the second inner hole 21 matches the change in the outer diameter of the variable-diameter screw to increase the geometric compression ratio and enhance the plasticizing effect on the material. A number of second grooves 22 are provided on the inner wall surface of the compression section cylinder body 2. The number of second grooves 22 is distributed at intervals around the circumference of the second inner hole 21, and each second groove 22 extends in the front-back direction. Each second groove 22 corresponds to a first groove 13. The threaded cooperation between the number of second grooves 22 and the variable-diameter screw improves the plasticizing efficiency and plasticizing quality. A first cooling groove 23 that spirally extends from front to back is provided on the outer wall surface of the compression section cylinder body 2. A copper pipe through which cooling water can pass can be installed in the first cooling groove 23 to facilitate the adjustment of the temperature of the compression section cylinder body 2.
[0023] As Figure 5 , 6 shown, an exhaust port 32 communicating with the third inner hole 31 is provided on the side wall of the extrusion section cylinder body 3. The exhaust port 32 corresponds to the exhaust section of the variable-diameter screw to allow the gas and water vapor released by the material in the exhaust section to be discharged from the variable-diameter barrel 100. A number of second cooling grooves 33 are provided on the outer wall surface of the extrusion section cylinder body 3. The number of second cooling grooves 33 is arranged at intervals from front to back, and each second cooling groove 33 spirally extends from front to back. A copper pipe through which cooling water can pass can also be installed in each second cooling groove 33 to facilitate the adjustment of the temperature of the extrusion section cylinder body 3. The number of second cooling grooves 33 is arranged in sequence corresponding to the segments on the variable-diameter screw, and the temperature adjustment can cooperate with the change of the material on the screw to improve the plasticizing efficiency and plasticizing quality.
[0024] The above shows and describes the basic principles, main features and advantages of the present application. Those skilled in the art of this industry should understand that the present application is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present application. Without departing from the spirit and scope of the present application, the present application will have various changes and improvements. The scope of protection required by the present application is defined by the appended claims, the specification and their equivalents.
Claims
1. A variable diameter barrel for sheet production, characterized in that: The invention comprises a feeding section cylinder, a compression section cylinder and an extrusion section cylinder, wherein the feeding section cylinder, the compression section cylinder and the extrusion section cylinder are detachably connected from front to back, a first inner hole extending from front to back is provided in the feeding section cylinder, and a feed port connected to the first inner hole is provided on the side wall of the feeding section cylinder; a second inner hole extending from front to back is provided in the compression section cylinder, and the inner diameter of the second inner hole gradually decreases from front to back, and the second inner hole has a maximum inner diameter and a minimum inner diameter; the extrusion section cylinder is provided with a first inner hole extending from front to back, and a second inner hole extending from front to back is provided in the compression section cylinder, and a second inner hole extending from front to back is provided in the compression section cylinder, and a second inner hole having a maximum inner diameter and a minimum inner diameter is provided in the compression section cylinder; A third inner hole extending from front to back is provided, and an exhaust port connected to the third inner hole is provided on the side wall of the extrusion section barrel. The first inner hole, the second inner hole and the third inner hole are connected in sequence from front to back to form a conveying channel for the variable diameter screw to rotate; the inner diameter of the first inner hole is equal to the maximum inner diameter, and the inner diameter of the third inner hole is equal to the minimum inner diameter; the compression section barrel corresponds to the segmented change of the outer diameter of the variable diameter screw, and the exhaust port corresponds to the exhaust section of the variable diameter screw.
2. The variable diameter barrel according to claim 1, characterized in that: The inner wall surface of the feeding section cylinder is provided with a plurality of first grooves, the plurality of first grooves are distributed at intervals around the circumference of the first inner hole, and each of the first grooves extends in the front-to-back direction.
3. The variable diameter barrel according to claim 2, characterized in that: The inner wall surface of the compression section cylinder is provided with a plurality of second grooves, which are distributed at intervals around the circumference of the second inner hole, and each of the second grooves extends in the front-to-back direction, and each of the second grooves corresponds to a first groove.
4. The variable diameter barrel according to claim 1, characterized in that: The outer wall surface of the compression section cylinder is provided with a first cooling groove which spirally extends from front to back.
5. The variable diameter barrel according to claim 1, characterized in that: The outer wall surface of the extrusion section cylinder is provided with a plurality of second cooling grooves, the plurality of second cooling grooves are arranged at intervals from front to back, and each of the second cooling grooves extends spirally from front to back.