Feeding machine barrel for sheet production
By designing a feeding barrel for sheet production, and using a combined structure of mandrel assembly and jacket assembly, more precise temperature control and higher usage efficiency are achieved, solving the problems of high cost and poor cooling effect of existing barrel materials, reducing the cost of use and maintenance difficulties.
Patent Information
- Application Number
- CN202422198797.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-09
- Publication Date
- 2025-06-13
- Estimated Expiration
- 2034-09-09
AI Technical Summary
The barrel materials of existing plastic extruders are costly and easily wearable, with poor cooling effect, which increases the cost of use and maintenance difficulty.
A feeding barrel for sheet production is designed, using a combined structure of mandrel assembly and jacket assembly, with separate cooling systems respectively to achieve more precise temperature control, energy-saving and efficient use.
Through the mandrel assembly and jacket assembly that is individually cooled through water, more precise temperature control and higher efficiency are achieved. The jacket assembly does not come into contact with the screw to avoid wear. The mandrel assembly can be replaced separately, reducing cost and maintenance difficulty.
Smart Images
Figure CN222972736U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the technical field of plastic product production equipment, and particularly relates to a feeder barrel for sheet production. Background Art
[0002] The barrel is the core component of a plastic extruder. Currently, all barrels are integral barrels. To strengthen the strength of the inner wall surface of the barrel in contact with the screw, the material of the barrel is nitrided steel, which has a high material cost, and the barrel will still be worn and needs to be replaced as a whole, increasing the usage cost; during the processing, the cooling of the entire barrel depends only on the cooling channels surrounding the inner hole for cooling, with poor cooling effect and low cooling efficiency. Summary of the Invention
[0003] To solve the above technical problems, the purpose of this application is to provide a feeder barrel for sheet production.
[0004] To achieve the above purpose, this application adopts the following technical solution: A feeder barrel for sheet production includes a mandrel assembly and an outer sleeve assembly coaxially sleeved outside the mandrel assembly. The mandrel assembly includes an inner sleeve, a water ring sleeve coaxially sleeved outside the inner sleeve, and a first cooling channel formed between the inner sleeve and the water ring sleeve. The first cooling channel is configured to surround the inner sleeve from front to back. The mandrel assembly is provided with a mandrel inner hole extending from front to back, a first feed port and a discharge port communicating with the mandrel inner hole. The inner wall surface of the inner sleeve is provided with a plurality of draw grooves all extending in the front-rear direction, and the plurality of draw grooves are sequentially distributed along the circumferential direction of the mandrel inner hole; the outer sleeve assembly includes a cooling outer sleeve, a barrel outer sleeve coaxially sleeved outside the cooling outer sleeve, and a second cooling channel formed between the cooling outer sleeve and the barrel outer sleeve. The second cooling channel is configured to surround the cooling outer sleeve from front to back. The outer sleeve assembly is provided with a second feed port corresponding to the first feed port, and the second feed port is connected to the mandrel inner hole.
[0005] In the above technical solution, further preferably, the inner wall surface of the water ring sleeve is provided with a plurality of first ring grooves spaced from front to back and a plurality of first connecting grooves alternately distributed up and down from front to back. Each of the first ring grooves is circumferentially provided around the inner sleeve, and each of the first ring grooves is connected to the adjacent first ring groove at the front side through one of the first connecting grooves. The plurality of first ring grooves, the plurality of first connecting grooves and the outer wall surface of the inner sleeve define the one-way first cooling channel.
[0006] In the above technical solution, further preferably, the first cooling channel further includes a first water inlet and a first water outlet opened on the water ring sleeve, and a second water inlet and a second water outlet opened on the cooling outer sleeve. The second water inlet corresponds to the first water inlet, and the second water outlet corresponds to the first water outlet.
[0007] In the above technical solution, further preferably, the outer wall surface of the cooling outer sleeve is provided with a plurality of second annular grooves spaced apart from front to back and a plurality of second connecting grooves alternately distributed up and down from front to back. Each of the second annular grooves is provided around the circumferential direction of the cooling outer sleeve, and the width of the second annular groove is greater than the width of the first annular groove. Each of the second annular grooves is communicated with the adjacent second annular groove on the front side through a second connecting groove. The plurality of second annular grooves, the plurality of second connecting grooves and the inner wall surface of the cylinder outer sleeve define the one-way second cooling channel.
[0008] In the above technical solution, further preferably, the second cooling channel includes a third water inlet and a third water outlet opened on the cylinder outer sleeve. The second cooling channel and the cylinder outer sleeve are both arranged to avoid the second water inlet and the second water outlet.
[0009] In the above technical solution, further preferably, the third water outlet is located above the third water inlet.
[0010] In the above technical solution, further preferably, the inner sleeve is in interference fit with the water ring sleeve, the cooling outer sleeve is in interference fit with the cylinder outer sleeve, and the water ring sleeve is key-connected to the cooling outer sleeve.
[0011] In the above technical solution, further preferably, there is a key connection structure between the water ring sleeve and the cooling outer sleeve. The key connection structure includes a first key groove opened on the outer wall surface of the water ring sleeve, a second key groove opened on the inner wall surface of the cooling outer sleeve, and a flat key that can be accommodated in the first key groove and the second key groove at the same time. The first key groove is adjacent to the rear end of the water ring sleeve, and the second key groove is adjacent to the rear end of the cooling outer sleeve.
[0012] The present application has the following beneficial effects compared with the prior art:
[0013] The mandrel assembly and the outer sleeve assembly of the present application are cooled by water separately, the temperature control is more accurate, and it is more energy-saving and efficient to use; the outer sleeve assembly does not contact the screw during the operation of the screw, will not be worn out and scrapped, and can be used for a long time. When the mandrel assembly is worn, it can be replaced separately, reducing costs and facilitating maintenance. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 A structural schematic diagram of a feeder barrel provided by an embodiment of the present application;
[0015] Figure 2 is Figure 1 a sectional view taken along the A-A line in
[0016] Figure 3 is Figure 2 a structural schematic diagram of the mandrel assembly in
[0017] Figure 4 is Figure 3 a structural schematic diagram of the water ring sleeve in
[0018] Figure 5 is Figure 2 a structural schematic diagram of the outer sleeve assembly in
[0019] Figure 6 is Figure 5 a structural schematic diagram of the cooling jacket in
[0020] Wherein: 100, feeder barrel; 10, mandrel assembly; 1, inner sleeve; 11, mandrel inner hole; 12, grooving; 2, water ring sleeve; 21, first ring groove; 22, first connecting groove; 23, first key groove; 3, first cooling flow channel; 31, first water inlet; 32, first water outlet; 33, second water inlet; 34, second water outlet; 4, first feed inlet; 5, discharge outlet; 20, outer sleeve assembly; 6, cooling jacket; 61, second ring groove; 62, second connecting groove; 63, second key groove; 7, barrel outer sleeve; 8, second cooling flow channel; 81, third water inlet; 82, third water outlet; 9, second feed inlet; 30, flat key. Detailed implementation manners
[0021] To describe in detail the technical content, structural features, achieved purposes 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 may also be implemented without these specific details or in the case of one or more equivalent arrangements. In addition, various exemplary embodiments may be different, but not necessarily exclusive. For example, without departing from the inventive concept, the specific shapes, structures and characteristics of the exemplary embodiments may be used or implemented in another exemplary embodiment.
[0022] An embodiment of the present application provides a feeder barrel for sheet production. The feeder barrel is used in cooperation with an extrusion screw to shear and stir raw materials, thereby realizing the plasticization and melting of materials.
[0023] As Figures 1-3 shown, the feeder barrel 100 includes a mandrel assembly 10 and an outer sleeve assembly 20 coaxially sleeved outside the mandrel assembly 10. The mandrel assembly 10 includes an inner sleeve 1, a water ring sleeve 2 coaxially sleeved outside the inner sleeve 1, and a first cooling channel 3 formed between the inner sleeve 1 and the water ring sleeve 2. The first cooling channel 3 is configured to surround the inner sleeve 1 from front to back. The mandrel assembly 10 is provided with a mandrel inner hole 11 extending from front to back, a first feed port 4 and a discharge port 5 communicated with the mandrel inner hole 11. The inner sleeve 1 is cylindrical, and the inner wall surface of the inner sleeve 1 defines the mandrel inner hole 11. The discharge port 5 is formed at the rear end of the inner sleeve 1. A plurality of draw grooves 12 extending along the front-rear direction are formed on the inner wall surface of the inner sleeve 1, and the plurality of draw grooves 12 are sequentially distributed along the circumferential direction of the mandrel inner hole 11.
[0024] As Figure 4 shown, a plurality of first annular grooves 21 spaced from front to back and a plurality of first connecting grooves 22 alternately distributed up and down from front to back are formed on the inner wall surface of the water ring sleeve 2. Each first annular groove 21 is formed around the circumferential direction of the inner sleeve 1, and each first annular groove 21 is communicated with the adjacent first annular groove 21 on the front side through a first connecting groove 22. The plurality of first annular grooves 21, the plurality of first connecting grooves 22 and the outer wall surface of the inner sleeve 1 define a one-way first cooling channel 3. Cooling water is supplied in the first cooling channel 3 to adjust the temperature of the inner sleeve 1, so that the material is at a suitable temperature in the feeder barrel 100 to achieve the purpose of sufficient plasticization.
[0025] As Figure 2 、 5 shown, the outer sleeve assembly 20 includes a cooling outer sleeve 6, a barrel outer sleeve 7 coaxially sleeved outside the cooling outer sleeve 6, and a second cooling channel 8 formed between the cooling outer sleeve 6 and the barrel outer sleeve 7. The second cooling channel 8 is configured to surround the cooling outer sleeve 6 from front to back. A second feed port 9 corresponding to the first feed port 4 is provided on the outer sleeve assembly 20. The second feed port 9 is communicated with the mandrel inner hole 11. After the mandrel assembly 10 and the outer sleeve assembly 20 are assembled, the first feed port 4 and the second feed port 9 are communicated to supply raw materials into the mandrel inner hole 11.
[0026] As Figure 5 、 6As shown in the figure, a plurality of second annular grooves 61 spaced apart from front to back and a plurality of second connecting grooves 62 alternately distributed up and down from front to back are formed on the outer wall surface of the cooling jacket 6. Each second annular groove 61 is formed around the circumference of the cooling jacket 6, and the width of the second annular groove 61 is greater than the width of the first annular groove 21. Each second annular groove 61 is communicated with the adjacent second annular groove 61 on the front side through a second connecting groove 62. The plurality of second annular grooves 61, the plurality of second connecting grooves 62 and the inner wall surface of the cylinder jacket 7 define a one-way second cooling flow channel 8.
[0027] As Figure 2 , 3 , as shown in Figure 5, the first cooling flow channel 3 further includes a first water inlet 31 and a first water outlet 32 formed on the water ring sleeve 2, and a second water inlet 33 and a second water outlet 34 formed on the cooling jacket 6. The second water inlet 33 corresponds to the first water inlet 31, and the second water outlet 34 corresponds to the first water outlet 32. Cooling water enters the first cooling flow channel 3 from the second water inlet 33, cools the inner sleeve 1 and the water ring sleeve 2, and then is output from the second water outlet 34 to the mandrel assembly 10. The first cooling flow channel 3 is arranged to avoid the first feed port 4 and the second feed port 9, and the first water inlet 31, the first water outlet 32, the second water inlet 33 and the second water outlet 34 are all distributed below the inner sleeve 1.
[0028] The second cooling flow channel 8 includes a third water inlet 81 and a third water outlet 82 formed on the cylinder jacket 7. The third water inlet 81 is located below the mandrel assembly 10, and the third water outlet 82 is located above the mandrel assembly 10. The third water inlet 81 supplies cooling water to enter the second cooling flow channel 8. After the cooling water cools the cooling jacket 6 and the cylinder jacket 7, it is output from the third water outlet 82 to the jacket assembly 20. The second cooling flow channel 8 and the cylinder jacket 7 are both arranged to avoid the second water inlet 33 and the second water outlet 34, and the third water inlet 81 and the third water outlet 82 are arranged to avoid the second feed port 9.
[0029] The inner sleeve 1 and the water ring sleeve 2 are in interference fit, the cooling jacket 6 and the cylinder jacket 7 are in interference fit, and the water ring sleeve 2 and the cooling jacket 6 are key-connected. There is a key connection structure between the water ring sleeve 2 and the cooling jacket 6. The key connection structure includes a first key groove 23 formed on the outer wall surface of the water ring sleeve 2, a second key groove 63 formed on the inner wall surface of the cooling jacket 6, and a flat key 30 that can be simultaneously accommodated in the first key groove 23 and the second key groove 63. The first key groove 23 is adjacent to the rear end of the water ring sleeve 2, and the second key groove 63 is adjacent to the rear end of the cooling jacket 6.
[0030] The mandrel assembly 10 and the jacket assembly 20 are cooled by separate water flow, and the temperature control is more accurate, making it more energy-efficient and efficient to use; the jacket assembly 20 does not contact the screw during the operation of the screw, will not be worn out and scrapped, and can be used for a long time. When the mandrel assembly 10 is worn, it can be replaced separately, reducing costs and facilitating maintenance.
[0031] The above has shown and described the basic principles, main features and advantages of the present application. Those skilled in the art 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 feeding barrel for sheet production, characterized in that: The invention comprises a core rod assembly and a jacket assembly coaxially sleeved on the outside of the core rod assembly, wherein the core rod assembly comprises an inner sleeve, a water ring sleeve coaxially sleeved on the outside of the inner sleeve, and a first cooling channel formed between the inner sleeve and the water ring sleeve, wherein the first cooling channel is configured to surround the inner sleeve from front to back, the core rod assembly is provided with a core rod inner hole extending from front to back, and a first feed port and a discharge port connected to the core rod inner hole, the inner wall surface of the inner sleeve is provided with a plurality of grooves extending in the front-to-back direction, and the plurality of grooves are sequentially distributed along the circumference of the core rod inner hole; the jacket assembly comprises a cooling jacket, a barrel jacket coaxially sleeved on the outside of the cooling jacket, and a second cooling channel formed between the cooling jacket and the barrel jacket, wherein the second cooling channel is configured to surround the cooling jacket from front to back, and a second feed port corresponding to the first feed port is provided on the jacket assembly, and the second feed port is connected to the core rod inner hole.
2. The feeding barrel according to claim 1, characterized in that The inner wall surface of the water ring sleeve is provided with a plurality of first annular grooves spaced apart from front to back and a plurality of first connecting grooves alternately distributed up and down from front to back, each of the first annular grooves is opened around the circumference of the inner sleeve, each of the first annular grooves is connected to the first annular groove adjacent to the front side via a first connecting groove, and the plurality of first annular grooves, the plurality of first connecting grooves and the outer wall surface of the inner sleeve define a unidirectional first cooling channel.
3. The feeding barrel according to claim 2, characterized in that The first cooling channel also includes a first water inlet and a first water outlet opened on the water ring sleeve and a second water inlet and a second water outlet opened on the cooling jacket, the second water inlet corresponds to the first water inlet, and the second water outlet corresponds to the first water outlet.
4. The feeding barrel according to claim 3, characterized in that The outer wall surface of the cooling jacket is provided with a plurality of second annular grooves spaced apart from front to back and a plurality of second connecting grooves alternately distributed up and down from front to back. Each of the second annular grooves is opened around the circumference of the cooling jacket, and the width of the second annular groove is greater than the width of the first annular groove. Each of the second annular grooves is connected to the second annular groove adjacent to the front side via a second connecting groove. The plurality of second annular grooves, the plurality of second connecting grooves and the inner wall surface of the tube jacket define a unidirectional second cooling channel.
5. The feeding barrel according to claim 4, characterized in that The second cooling channel comprises a third water inlet and a third water outlet which are arranged on the sleeve outer casing, and the second cooling channel and the sleeve outer casing are arranged to avoid the second water inlet and the second water outlet.
6. The feeding barrel according to claim 5, characterized in that The third water outlet is located above the third water inlet.
7. The feed barrel according to claim 1, characterized in that The inner sleeve is interference fit with the water ring sleeve, the cooling outer sleeve is interference fit with the barrel outer sleeve, and the water ring sleeve is key connected with the cooling outer sleeve.
8. The feed barrel according to claim 7, characterized in that A key connection structure is provided between the water ring sleeve and the cooling jacket, and the key connection structure comprises a first key groove provided on the outer wall surface of the water ring sleeve, a second key groove provided on the inner wall surface of the cooling jacket, and a flat key which can be simultaneously accommodated in the first key groove and the second key groove, wherein the first key groove is adjacent to the rear end portion of the water ring sleeve, and the second key groove is adjacent to the rear end portion of the cooling jacket.