Feeding device for PE pipe extruder

Abstract

The utility model provides a feeding device for a PE (Poly Ethylene) pipe extruder, which belongs to the technical field of plastic processing and comprises an extruder body, a storage box, a spiral feeding pipe communicated with the lower part of the storage box, an extrusion head fixedly arranged on the outer end face of the spiral feeding pipe, and a servo motor adaptively arranged on the outer side of the spiral feeding pipe, the power distribution cabinet is arranged above the spiral feeding pipe; the feeding mechanism comprises a fixing block fixedly connected to the outer surface of the storage box, a hand wheel arranged on the outer side of the fixing block and a connecting column fixedly connected to the inner surface of the hand wheel. Through cooperation of all parts in the feeding mechanism, not only can the opening and closing angle of the striker plate be flexibly adjusted, but also the angle of the striker plate can be stably locked, and it is ensured that the adjusted angle is stable and unchanged, so that the discharging speed and the discharging amount of materials are accurately controlled, the production efficiency and the product quality are improved, and meanwhile the production cost is reduced. And production interruption caused by accidental change is reduced.

Description

Technical Field

[0001] This utility model belongs to the field of plastic processing technology, specifically relating to a feeding device for a PE pipe extruder. Background Technology

[0002] PE pipe extruders are mainly used to produce polyethylene pipes. They heat and melt polyethylene (PE) resin granules, creating a flowable molten state. The molten material is then propelled through a die by the extruder screw to form a tubular structure with a specific outer diameter and wall thickness. The die design directly affects the dimensional accuracy and surface quality of the final product. The high-temperature pipe blank exiting the die needs to be rapidly cooled and solidified to maintain its shape stability; this is typically achieved using vacuum sizing sleeves, spray cooling devices, etc.

[0003] Some existing PE pipe extruders often suffer from the drawback of inconsistent material feeding during operation. Unstable feeding can lead to changes in the plasticization and flow state of the molten plastic, thus affecting the quality of the pipe. For example, uneven wall thickness and fluctuations in outer diameter can occur due to unstable feeding. To compensate for this, operators may need to frequently adjust machine parameters, increasing workload and potentially causing production line shutdowns or slowing down production. Excessive feeding can lead to raw material waste, as excess material cannot be fully converted into finished products and requires secondary processing or disposal. Conversely, insufficient feeding can result in pipe defects such as voids or insufficient strength, also leading to material waste. Utility Model Content

[0004] The purpose of this invention is to provide a feeding device for a tube extruder, which aims to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A feeding device for a tube extruder includes an extruder body, a storage tank, a spiral feeding pipe connected to the bottom of the storage tank, an extrusion head fixedly installed on the outer end face of the spiral feeding pipe, a servo motor adapted to be installed on the outside of the spiral feeding pipe, and a power distribution cabinet disposed above the spiral feeding pipe.

[0007] The feeding mechanism includes a fixed block fixedly connected to the outer surface of the storage box, a handwheel disposed on the outer side of the fixed block, a connecting column fixedly connected to the inner surface of the handwheel, a bidirectional threaded rod fixedly connected to the through end of the connecting column, internal threaded blocks threaded to both sides of the bidirectional threaded rod, a rack fixedly connected to the outer surface of the internal threaded block, a gear meshing with the outer surface of the rack, a driven column fixedly connected to the inner surface of the gear, a baffle plate fixedly sleeved on the outer surface of the driven column, and a locking assembly used to lock the connecting column.

[0008] In a preferred embodiment of this utility model, a rotating bearing sleeve is installed at the connection between the connecting column and the fixed block, and the through end of the driven column is fixedly installed on the inner wall of the storage box through the bearing.

[0009] In a preferred embodiment of this utility model, a rotating bearing sleeve is installed at the connection between the driven column and the storage box, and the baffle plate is located inside the storage box.

[0010] As a preferred embodiment of the present invention, the locking assembly includes a fixing plate fixedly sleeved on the outer surface of the connecting column, and a plurality of limiting grooves formed on the outer surface of the fixing plate.

[0011] As a preferred embodiment of the present invention, the locking assembly further includes a fixing sleeve fixedly installed on the outside of the fixing block, a sliding column that slides in contact with the inner surface of the fixing sleeve and cooperates with the limiting groove, and a connecting plate fixedly sleeved on the outer surface of the sliding column.

[0012] As a preferred embodiment of the present invention, the locking assembly further includes a spring sleeved on the outer surface of the sliding column, and a pull ring fixedly connected to the end of the fixing sleeve away from the fixing plate.

[0013] In a preferred embodiment of this utility model, the outer end face of the spring is fixedly connected to the outer surface of the connecting disk, the other end of the spring is fixedly connected to the inner wall of the fixing sleeve, and the limiting grooves are distributed in a circumferential array on the outer surface of the fixing disk.

[0014] Compared with the prior art, the beneficial effects of this utility model are: through the cooperation of various components in the feeding mechanism, not only can the opening and closing angle of the baffle be flexibly adjusted, but the angle of the baffle can also be locked firmly to ensure that the adjusted angle remains stable. This allows for precise control of the material feeding speed and quantity, thereby improving production efficiency and product quality while reducing production interruptions caused by unexpected changes. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This utility model Figure 1 A magnified view of the structure at point A in the middle;

[0018] Figure 3 This is a structural schematic diagram of the present invention from another perspective;

[0019] Figure 4 This utility model Figure 3 A magnified structural diagram of a portion of point B in the middle section;

[0020] Figure 5 This is a schematic diagram of the internal structure of the fixing sleeve of this utility model.

[0021] In the diagram: 100, Extruder body; 101, Storage bin; 102, Spiral feed tube; 103, Extrusion head; 104, Servo motor; 105, Power distribution cabinet; 200, Feeding mechanism; 201, Fixing block; 202, Handwheel; 203, Connecting column; 204, Bidirectional threaded rod; 205, Internal threaded block; 206, Rack; 207, Gear; 208, Driven column; 209, Baffle plate; 210, Locking assembly; 210a, Fixing disc; 210b, Limiting groove; 210c, Fixing sleeve; 210d, Sliding column; 210e, Connecting disc; 210f, Spring; 210g, Pull ring. Detailed Implementation

[0022] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0023] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0024] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments.

[0025] Example

[0026] Reference Figures 1-5 This embodiment of the present invention provides a feeding device for a PE pipe extruder, which can flexibly adjust the opening and closing angle of the baffle plate 209 and lock it.

[0027] The extruder body 100 includes a storage tank 101, a spiral feeding pipe 102 connected to the bottom of the storage tank 101, an extrusion head 103 fixedly installed on the outer end face of the spiral feeding pipe 102, a servo motor 104 adapted to be installed on the outside of the spiral feeding pipe 102, and a power distribution cabinet 105 disposed above the spiral feeding pipe 102.

[0028] It should be noted that the storage bin 101 is used to store the PE raw materials to be processed. The spiral feed pipe 102 conveys the raw materials from the storage bin to the extrusion head 103 through spiral propulsion. The extrusion head 103 serves as a molding die to form the molten PE material into a pipe of a specific shape. The servo motor 104 is used to drive the spiral feed pipe 102 to operate.

[0029] The feeding mechanism 200 includes a fixed block 201 fixedly connected to the outer surface of the storage box 101, a handwheel 202 disposed on the outer side of the fixed block 201, a connecting column 203 fixedly connected to the inner surface of the handwheel 202, a bidirectional threaded rod 204 fixedly connected to the through end of the connecting column 203, an internal threaded block 205 threaded to both sides of the bidirectional threaded rod 204 respectively, a rack 206 fixedly connected to the outer surface of the internal threaded block 205, a gear 207 meshing with the outer surface of the rack 206, a driven column 208 fixedly connected to the inner surface of the gear 207, a baffle plate 209 fixedly sleeved on the outer surface of the driven column 208, and a locking assembly 210 used in conjunction with locking the connecting column 203.

[0030] It should be noted that the fixing block 201 is used to provide an installation base for other components. Turning the handwheel 202 can drive the connecting post 203 and the bidirectional threaded rod 204 to rotate synchronously. The two threads of the bidirectional threaded rod 204 are in opposite directions. By limiting the gear 207 through the driven post 208, the gear 207 limits the rack 206 and the internal threaded block 205. Thus, the two internal threaded blocks 205 drive the two racks 206 to move in opposite directions in a straight line through the rotational distribution of the bidirectional threaded rod 204. Then, the two racks 206 drive the two gears 207, the driven post 208 and the baffle plate 209 to rotate in opposite directions, so as to achieve the effect of adjusting the opening angle of the baffle plate 209.

[0031] Specifically, a rotating bearing sleeve is installed at the connection between the connecting column 203 and the fixed block 201, and the through end of the driven column 208 is fixedly installed on the inner wall of the storage box 101 through the bearing.

[0032] Furthermore, a rotating bearing sleeve is installed at the connection between the driven column 208 and the storage box 101, and the baffle plate 209 is located inside the storage box 101.

[0033] Preferably, the locking assembly 210 includes a fixed plate 210a fixedly sleeved on the outer surface of the connecting post 203, and a plurality of limiting grooves 210b formed on the outer surface of the fixed plate 210a.

[0034] It should be noted that when the connecting column 203 rotates, it can also drive the fixed plate 210a and several limiting grooves 210b to rotate synchronously.

[0035] It should be noted that the locking assembly 210 also includes a fixing sleeve 210c fixedly installed on the outside of the fixing block 201, a sliding post 210d that slides in contact with the inner surface of the fixing sleeve 210c and is used in conjunction with the limiting groove 210b, and a connecting plate 210e fixedly sleeved on the outer surface of the sliding post 210d.

[0036] Among them, the fixed sleeve 210c is used to support the sliding column 210d. The outer end face of the sliding column 210d slides in contact with the inner wall of the limiting groove 210b. Pulling the sliding column 210d can drive the connecting plate 210e to move synchronously in a straight line.

[0037] Furthermore, the locking assembly 210 also includes a spring 210f sleeved on the outer surface of the sliding post 210d, and a pull ring 210g fixedly connected to the end of the fixed sleeve 210c away from the fixed plate 210a.

[0038] It should be explained that when the connecting plate 210e moves, it can also stretch the spring 210f, and the pull ring 210g makes it easy for the user to pull the sliding column 210d.

[0039] Specifically, the outer end face of the spring 210f is fixedly connected to the outer surface of the connecting plate 210e, the other end of the spring 210f is fixedly connected to the inner wall of the fixing sleeve 210c, and the limiting grooves 210b are distributed in a circumferential array on the outer surface of the fixing plate 210a.

[0040] During use, ensure the equipment is stopped for safe operation. Pull the sliding column 210d by the pull ring 210g to overcome the elastic force of the spring 210f and make the sliding column 210d exit from the limiting groove 210b on the fixed plate 210a, thereby releasing the locking state of the connecting column 203. Then, turn the handwheel 202, which drives the connecting column 203 to rotate, thereby causing the bidirectional threaded rod 204 to rotate synchronously. Since the thread directions on both sides of the bidirectional threaded rod 204 are opposite, this causes the two internal threaded blocks 205 to move towards or away from each other. These two internal threaded blocks 205 are respectively connected to the rack 206, so the rack 206 also moves accordingly.

[0041] As the rack 206 moves linearly, it causes the gear 207 to rotate. Therefore, the rotation of the gear 207 directly causes the driven column 208 to rotate, which in turn drives the baffle plate 209 fixed on it to rotate, thereby adjusting the size of its opening in the storage box 101 and thus changing the feeding speed and flow rate of the PE raw material.

[0042] After the required angle adjustment is completed: release the pull ring 210g, and under the action of the spring 210f, the sliding column 210d is re-inserted into the limiting groove 210b of the fixed plate 210a, locking the position of the connecting column 203, preventing the baffle plate 209 from rotating unexpectedly due to external factors, and ensuring the stability of the feeding amount.

[0043] In summary, through the cooperation of various components in the feeding mechanism 200, not only can the opening and closing angle of the baffle plate 209 be flexibly adjusted, but the angle of the baffle plate 209 can also be firmly locked to ensure that the adjusted angle remains stable. This allows for precise control of the material feeding speed and quantity, thereby improving production efficiency and product quality while reducing production interruptions caused by unexpected changes.

[0044] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape and proportion of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of this utility model. The order or sequence of any process or method steps may be changed or reordered according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structural equivalents but also equivalent structures. Without departing from the scope of this invention, other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments. Therefore, this invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0045] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the best mode of carrying out the present invention as currently considered, or those features that are not relevant to implementing the present invention) may be omitted.

[0046] It should be understood that numerous specific implementation decisions can be made during the development of any practical implementation, such as in any engineering or design project. Such development efforts may be complex and time-consuming, but for those skilled in the art who benefit from this disclosure, the development effort will be a routine work of design, manufacturing, and production without requiring much experimentation.

[0047] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A feeding device for a PE pipe extruder, characterized in that: include, The extruder body (100) includes a storage tank (101), a spiral feed pipe (102) connected to the bottom of the storage tank (101), an extrusion head (103) fixedly installed on the outer end face of the spiral feed pipe (102), a servo motor (104) adapted to be installed on the outside of the spiral feed pipe (102), and a power distribution cabinet (105) disposed above the spiral feed pipe (102). The feeding mechanism (200) includes a fixed block (201) fixedly connected to the outer surface of the storage box (101), a handwheel (202) disposed on the outer side of the fixed block (201), a connecting column (203) fixedly connected to the inner surface of the handwheel (202), a bidirectional threaded rod (204) fixedly connected to the through end of the connecting column (203), an internal threaded block (205) respectively threaded to the two sides of the bidirectional threaded rod (204), a rack (206) fixedly connected to the outer surface of the internal threaded block (205), a gear (207) meshing with the outer surface of the rack (206), a driven column (208) fixedly connected to the inner surface of the gear (207), a baffle plate (209) fixedly sleeved on the outer surface of the driven column (208), and a locking assembly (210) used to lock the connecting column (203).

2. The feeding device for a PE pipe extruder according to claim 1, characterized in that: A rotating bearing sleeve is installed at the connection between the connecting column (203) and the fixing block (201), and the through end of the driven column (208) is fixedly installed on the inner wall of the storage box (101) by the bearing.

3. The feeding device for a PE pipe extruder according to claim 2, characterized in that: A rotating bearing sleeve is installed at the connection between the driven column (208) and the storage box (101), and the baffle plate (209) is located inside the storage box (101).

4. The feeding device for a PE pipe extruder according to claim 3, characterized in that: The locking assembly (210) includes a fixed plate (210a) fixedly sleeved on the outer surface of the connecting post (203), and a plurality of limiting grooves (210b) formed on the outer surface of the fixed plate (210a).

5. A feeding device for a PE pipe extruder according to claim 4, characterized in that: The locking assembly (210) further includes a fixed sleeve (210c) fixedly installed on the outside of the fixed block (201), a sliding post (210d) that slides in contact with the inner surface of the fixed sleeve (210c) and cooperates with the limiting groove (210b), and a connecting plate (210e) fixedly sleeved on the outer surface of the sliding post (210d).

6. A feeding device for a PE pipe extruder according to claim 5, characterized in that: The locking assembly (210) also includes a spring (210f) sleeved on the outer surface of the sliding post (210d) and a pull ring (210g) fixedly connected to the end of the fixing sleeve (210c) away from the fixing plate (210a).

7. A feeding device for a PE pipe extruder according to claim 6, characterized in that: The outer end face of the spring (210f) is fixedly connected to the outer surface of the connecting plate (210e), and the other end of the spring (210f) is fixedly connected to the inner wall of the fixing sleeve (210c). The limiting groove (210b) is distributed in a circumferential array on the outer surface of the fixing plate (210a).

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