Screw press-in device of plastic extruding machine

Abstract

The utility model discloses a screw press-in device of a plastic extruding machine, and relates to the technical field of plastic extruding machines. The screw press-in device of the plastic extruding machine comprises a machine barrel, a fixing assembly and a pushing assembly, a screw is arranged in the machine barrel, the fixing assembly is arranged on the machine barrel, the pushing assembly is arranged on the machine barrel and comprises a connecting plate, a movable seat and a press-in plate, the movable seat is installed on the connecting plate in a sliding mode, and the press-in plate is fixedly installed at the bottom of the movable seat. Through the arrangement of the propelling assembly, different production tasks possibly need to use screws of different sizes, and the press-in plate is replaced or adjusted to adapt to the screws of different sizes, so that the flexibility and multifunctionality of the production line are ensured, the press-in plate is replaced or adjusted more quickly, simply and conveniently, and the production efficiency is improved. Operators can easily carry out adjustment according to needs, and do not need to spend too much time and effort, so that the production efficiency and the utilization rate of a production line are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of extruders, in particular to a screw pressing device for an extruder. Background Art

[0002] The diameter of large screw of extruder is generally above 150mm, such as φ150, φ200, φ250 extruders. Large screw of extruder is mainly used to produce insulation layer and sheath layer of wire and cable with large cross section. The screw of extruder is the most important part of extruder equipment, which is directly related to the plasticizing effect and output of different plastics. In order to meet the needs of different plastic processing, the extruder needs to replace different types of screws.

[0003] After exploration and analysis, the following shortcomings exist in actual use:

[0004] The pressing plates on the existing screw pressing devices of some extruders are usually fixed. Different production tasks may require the use of screws of different sizes, and the fixed pressing plates may limit the flexibility in the production process.

[0005] In summary, the present application now proposes an extruder screw pressing device to solve the above-mentioned problems. Utility Model Content

[0006] The utility model aims to provide a screw pressing device for an extruder, which can solve the problem that the pressing plates on the screw pressing devices of some extruders are usually fixed.

[0007] In order to achieve the above-mentioned purpose, the utility model provides the following technical solution: a screw pressing device for an extruder, comprising:

[0008] A barrel, wherein a screw is arranged inside the barrel;

[0009] A fixed component is arranged on the barrel, and the fixed component includes a sleeve, an opening and a movable block. The inner wall of the sleeve is provided with a plurality of groups of openings, and the movable block is movably installed inside the opening;

[0010] The propulsion assembly is arranged on the barrel and comprises a connecting plate, a movable seat and a pressing plate. The movable seat is slidably mounted on the connecting plate, and the pressing plate is fixedly mounted on the bottom of the movable seat.

[0011] Preferably, the fixing assembly also includes a spring and a push rod, the sleeve is arranged on the barrel, a spring is fixedly installed on one side of the movable block, the other end of the spring is fixedly installed on the inner wall of one side of the opening, the outer wall of the barrel is provided with a slot corresponding to the movable block, the movable block is snap-fitted and installed in the slot, and a push rod is fixedly installed on the top of the movable block. The design of the sleeve makes the entire screw pressing device easier to disassemble and maintain, and is convenient for operators to perform maintenance. Operators can perform necessary repairs or replacements more quickly without spending too much time to solve the problems of disassembly and reinstallation. By simplifying the disassembly process, the possibility of accidental damage can be reduced and the service life of the device can be extended.

[0012] Preferably, a limiting slide groove is provided on the top of the sleeve, and the push rod is slidably installed in the limiting slide groove, so that the sleeve can be easily disassembled by pushing the push rod.

[0013] Preferably, a fixing bracket is fixedly installed on the top of the sleeve, a threaded column is threadedly installed on the fixing bracket, and the bottom end of the threaded column passes through the fixing bracket and the top of the connecting plate for rotational installation.

[0014] Preferably, the propulsion assembly also includes a movable plate, a second spring, a connecting column and a pull plate. A cavity is provided inside the movable seat, and a movable plate is slidably arranged in the cavity. A second spring is fixedly installed on one side of the movable plate, and the other end of the second spring is fixedly installed on an inner wall of one side of the cavity. Pull plates are provided on both sides of the movable seat, and a connecting column is fixedly installed on the other side of the movable plate. The other end of the connecting column passes through the movable seat and is fixedly installed on one side of the pull plate. A second card slot is provided on both sides of the connecting plate, and one end of the pull plate is card-connected and installed in the second card slot. Different production tasks may require the use of screws of different sizes. By replacing or adjusting the pressing plate to adapt to screws of different sizes, the flexibility and versatility of the production line are ensured, and replacing or adjusting the pressing plate becomes faster and easier. The operator can easily make adjustments as needed without spending too much time and effort, thereby improving production efficiency and utilization of the production line. At the same time, by ensuring good cooperation between the pressing plate and the screw, the quality and consistency of the extruded product can be improved, thereby optimizing the extrusion process and reducing product defects and scrap rate.

[0015] Preferably, the center points of the barrel and the sleeve are on the same horizontal line, which facilitates the installation and removal of the sleeve.

[0016] Preferably, the barrel matches the screw.

[0017] Compared with the prior art, the beneficial effects of the utility model are:

[0018] (1) The screw pressing device of the extruder, through the coordinated use of the sleeve, the opening, the movable block, the spring and the push rod, the design of the sleeve makes the entire screw pressing device easier to disassemble and maintain, and is convenient for operators to perform maintenance. Operators can perform necessary repairs or replacements more quickly without spending too much time to solve the problem of disassembly and reinstallation. By simplifying the disassembly process, the possibility of accidental damage can be reduced and the service life of the device can be extended.

[0019] (2) The screw pressing device of the extruder, through the coordinated use of the connecting plate, the movable seat, the pressing plate, the movable plate, the second spring, the connecting column and the pulling plate, may require the use of screws of different sizes for different production tasks. The pressing plate can be replaced or adjusted to accommodate screws of different sizes, thereby ensuring the flexibility and versatility of the production line, making it faster and easier to replace or adjust the pressing plate. The operator can easily make adjustments as needed without spending too much time and effort, thereby improving production efficiency and the utilization rate of the production line. At the same time, by ensuring that the pressing plate and the screw are well matched, the quality and consistency of the extruded product can be improved, thereby optimizing the extrusion process and reducing product defects and scrap rates. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0021] Figure 1 It is a three-dimensional diagram of the utility model;

[0022] Figure 2 The utility model is a three-dimensional cutaway view Figure 1 ;

[0023] Figure 3 The utility model is a three-dimensional cutaway view Figure 2 ;

[0024] Figure 4 This is a schematic diagram of the structure of the fixing assembly of the utility model;

[0025] Figure 5 It is a schematic diagram of the structure of the connecting plate and the movable seat of the utility model.

[0026] Figure numerals: 1. barrel; 2. screw; 3. sleeve; 4. opening; 5. movable block; 6. spring one; 7. push rod; 8. fixed bracket; 9. threaded column; 10. connecting plate; 11. movable seat; 12. press plate; 13. movable plate; 14. spring two; 15. connecting column; 16. pull plate. DETAILED DESCRIPTION

[0027] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0028] See also Figure 1-5 The utility model provides a technical solution: a screw pressing device for an extruder, comprising a barrel 1, a fixing assembly and a pushing assembly, a screw 2 is arranged inside the barrel 1, the fixing assembly is arranged on the barrel 1, the fixing assembly comprises a sleeve 3, an opening 4 and a movable block 5, a plurality of groups of openings 4 are provided on the inner wall of the sleeve 3, a movable block 5 is movably installed inside the opening 4, the pushing assembly is arranged on the barrel 1, the pushing assembly comprises a connecting plate 10, a movable seat 11 and a pressing plate 12, a movable seat 11 is slidably installed on the connecting plate 10, and a pressing plate 12 is fixedly installed at the bottom of the movable seat 11.

[0029] Furthermore, the fixing assembly also includes a spring 6 and a push rod 7. The sleeve 3 is arranged on the barrel 1, and a spring 6 is fixedly installed on one side of the movable block 5. The other end of the spring 6 is fixedly installed on the inner wall of one side of the opening 4. The outer wall of the barrel 1 is provided with a slot 1 corresponding to the movable block 5. The movable block 5 is snap-fitted and installed in the slot 1. A push rod 7 is fixedly installed on the top of the movable block 5. The entire device is fixedly installed above the barrel 1. First, the sleeve 3 is sleeved on the barrel 1, and the sleeve 3 is pressed downward so that the movable block 5 on the sleeve 3 is retracted to the inside of the opening 4. When the sleeve 3 moves to the specified position, the movable block 5 is snap-fitted and installed in a slot on the barrel 1 by the reaction force of the spring 6, so that the sleeve 3 can be fixed. The design of the sleeve 3 makes the entire screw pressing device easier to disassemble and maintain, and is convenient for operators to perform maintenance. Operators can perform necessary repairs or replacements more quickly without having to spend too much time to solve the problems of disassembly and reinstallation. By simplifying the disassembly process, the possibility of accidental damage can be reduced and the service life of the device can be extended.

[0030] Furthermore, a limiting slide groove is provided on the top of the sleeve 3, and the push rod 7 is slidably installed in the limiting slide groove, so that the sleeve 3 can be easily disassembled by pushing the push rod 7.

[0031] Furthermore, a fixing bracket 8 is fixedly installed on the top of the sleeve 3, and a threaded column 9 is threadedly installed on the fixing bracket 8. The bottom end of the threaded column 9 passes through the fixing bracket 8 and the top of the connecting plate 10 for rotational installation.

[0032] Furthermore, the propulsion assembly also includes a movable plate 13, a second spring 14, a connecting column 15 and a pull plate 16. A cavity is provided inside the movable seat 11, and a movable plate 13 is slidably provided in the cavity. A second spring 14 is fixedly installed on one side of the movable plate 13, and the other end of the second spring 14 is fixedly installed on an inner wall of one side of the cavity. Pull plates 16 are provided on both sides of the movable seat 11, and a connecting column 15 is fixedly installed on the other side of the movable plate 13. The other end of the connecting column 15 passes through the movable seat 11 and is fixedly installed on one side of the pull plate 16. A second card slot is provided on both sides of the connecting plate 10, and one end of the pull plate 16 is card-connected and installed in the second card slot. Different production tasks may require the use of screws of different sizes. Rotating the threaded column 9 drives the connecting plate 10 The whole on moves downward, so that the pressing plate 12 is sleeved on the screw 2, and the screw 2 is pushed into the inside of the barrel 1 by the pressing plate 12 moving downward, and the pressing plate 12 is clamped and installed in the barrel 1. The pressing plate 12 is replaced or adjusted to adapt to screws of different sizes, thereby ensuring the flexibility and versatility of the production line, making it faster and easier to replace or adjust the pressing plate 12. The operator can easily make adjustments as needed without spending too much time and effort, thereby improving production efficiency and production line utilization. At the same time, by ensuring that the pressing plate 12 is well matched with the screw, the quality and consistency of the extruded product can be improved, thereby optimizing the extrusion process and reducing product defects and scrap rates.

[0033] Secondly, the center points of the barrel 1 and the sleeve 3 are on the same horizontal line, which is convenient for installing and disassembling the sleeve 3.

[0034] Secondly, barrel 1 and screw 2 are matched.

[0035] Working principle: The whole device is fixedly installed on the top of the barrel 1. First, the sleeve 3 is sleeved on the barrel 1, and the sleeve 3 is pressed downward to make the movable block 5 on the sleeve 3 shrink to the inside of the opening 4. When the sleeve 3 moves to the specified position, the movable block 5 is clamped and installed in a slot on the barrel 1 through the reaction force of the spring 16, so that the sleeve 3 can be fixed. Then, the threaded column 9 is rotated to drive the entire connecting plate 10 to move downward, so that the pressing plate 12 is sleeved on the screw 2. The screw 2 is pushed into the inside of the barrel 1 by the downward movement of the pressing plate 12, and the pressing plate 12 is clamped and installed in the barrel 1.

[0036] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the purpose of the present invention.

Claims

1. A screw pressing device for an extruder, characterized in that: include: A barrel (1), wherein a screw (2) is arranged inside the barrel (1); A fixed component is arranged on the barrel (1), and comprises a sleeve (3), an opening (4) and a movable block (5); the inner wall of the sleeve (3) is provided with a plurality of groups of openings (4), and the movable block (5) is movably installed inside the opening (4); The propulsion assembly is arranged on a barrel (1), and comprises a connecting plate (10), a movable seat (11) and a pressing plate (12). The movable seat (11) is slidably mounted on the connecting plate (10), and the pressing plate (12) is fixedly mounted on the bottom of the movable seat (11).

2. The screw pressing device for an extruder according to claim 1, characterized in that: The fixing assembly further comprises a spring (6) and a push rod (7); the sleeve (3) is arranged on the barrel (1); a spring (6) is fixedly mounted on one side of the movable block (5); the other end of the spring (6) is fixedly mounted on an inner wall of one side of the opening (4); a slot (1) corresponding to the movable block (5) is provided on the outer wall of the barrel (1); the movable block (5) is snap-fitted into the slot (1); and a push rod (7) is fixedly mounted on the top of the movable block (5).

3. The screw pressing device for an extruder according to claim 2, characterized in that: A limiting sliding groove is provided on the top of the sleeve (3), and the push rod (7) is slidably installed in the limiting sliding groove.

4. The screw pressing device for an extruder according to claim 3, characterized in that: A fixing bracket (8) is fixedly mounted on the top of the sleeve (3), a threaded column (9) is threadedly mounted on the fixing bracket (8), and the bottom end of the threaded column (9) passes through the fixing bracket (8) and the top of the connecting plate (10) for rotational mounting.

5. The screw pressing device for an extruder according to claim 4, characterized in that: The propulsion assembly further comprises a movable plate (13), a second spring (14), a connecting column (15) and a pull plate (16); a cavity is provided inside the movable seat (11), a movable plate (13) is slidably provided inside the cavity, a second spring (14) is fixedly installed on one side of the movable plate (13), the other end of the second spring (14) is fixedly installed on an inner wall of one side of the cavity, a pull plate (16) is provided on both sides of the movable seat (11), a connecting column (15) is fixedly installed on the other side of the movable plate (13), the other end of the connecting column (15) passes through the movable seat (11) and is fixedly installed on one side of the pull plate (16), a second card slot is provided on both sides of the connecting plate (10), and one end of the pull plate (16) is card-engaged in the second card slot.

6. The screw pressing device for an extruder according to claim 5, characterized in that: The center points of the barrel (1) and the sleeve (3) are on the same horizontal line.

7. The screw pressing device for an extruder according to claim 6, characterized in that: The barrel (1) and the screw (2) are matched.

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