Single-layer plastic sheet extruder

Abstract

The utility model relates to the technical field of plastic product preparation equipment, in particular to a single-layer plastic sheet extruder which comprises a protective cover, a feeding pipe is fixedly mounted on the side wall of the protective cover, a feeding hopper is arranged above the feeding pipe, a driving motor is arranged at the tail end of a transmission shaft, a rotating shaft is horizontally and rotatably mounted in the feeding hopper, and a motor is arranged at the tail end of the rotating shaft. A plurality of stirring rods are fixedly mounted on the rotating shaft; one end of the rotating shaft penetrates out of the feeding hopper, the end, penetrating out of the feeding hopper, of the rotating shaft and an output shaft of the driving motor are fixedly sleeved with chain wheels, and a chain is wound on the two chain wheels in an engaged mode. In the process that the driving motor drives the spiral feeding disc to rotate, under the transmission action between the chain wheel and the chain, the rotating shaft can drive the multiple stirring rods to stir materials in the feeding hopper, an additional electric driving device is not needed, and the effects of conveying and stirring the materials can be achieved only through one driving motor; and the power cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of plastic product preparation equipment, in particular to a single-layer plastic sheet extruder. Background Art

[0002] When producing plastic sheets such as polypropylene, polyethylene, and polystyrene, a corresponding inclined single-layer plastic sheet extrusion device is required. Common inclined single-layer plastic sheet extrusion devices include inclined single-layer plastic sheet extruders.

[0003] The Chinese patent with publication number CN211074603U discloses an inclined single-layer plastic sheet extruder with uniform glue output, which can ensure more uniform feeding and discharge the gas in the raw material, thereby facilitating more uniform glue output.

[0004] In the sheet extruder in the above patent document, the stirring of the material in the feed hopper needs to be achieved by rotating the stirring rod with the stirring motor, which requires a lot of electricity and has a high electricity cost. Utility Model Content

[0005] The purpose of the utility model is to solve the following shortcomings in the prior art: in the existing sheet extruder, the stirring of the material in the feed hopper needs to be achieved by rotating the stirring motor with the stirring rod, which requires more electricity and has a high electricity cost, and a single-layer plastic sheet extruder is proposed.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A single-layer plastic sheet extruder comprises a protective cover, a feed pipe is fixedly installed on the side wall of the protective cover, a feed hopper is arranged above the feed pipe, a drop pipe is fixedly installed on the lower surface of the feed hopper, the drop pipe is fixedly connected to the feed pipe, a spiral feed disc is arranged in the feed pipe, a transmission shaft is arranged at the end of the spiral feed disc close to the protective cover, a drive motor is arranged at the end of the transmission shaft, the drive motor is located in the protective cover, a rotating shaft is horizontally rotatably installed in the feed hopper, and a plurality of stirring rods are fixedly installed on the rotating shaft;

[0008] One end of the rotating shaft passes through the feed hopper, and a sprocket is fixedly sleeved on the end of the rotating shaft passing through the feed hopper and the output shaft of the driving motor. Chains are meshed and wound around the two sprockets, and two openings are provided on the upper surface of the protective cover for the chain to pass through.

[0009] Preferably, the side wall of the protection cover is provided with two groups of heat dissipation components, and the heat dissipation components are used for dissipating heat from the protection cover.

[0010] Preferably, the side wall of the protective cover is provided with an installation opening, and the two groups of heat dissipation components are respectively fixedly installed in the two installation openings, and the heat dissipation components include a hollow rod with one end fixedly installed in the installation opening and a closed-end design, and a piston rod with a sliding seal inserted in the hollow rod, an air outlet rod is fixedly installed at the end of the hollow rod located outside, and an air inlet rod is fixedly installed on the surface of the hollow rod located in the protective cover, and a one-way valve is provided in the air outlet rod and the air inlet rod, and the piston rod is connected to the hollow rod through a telescopic component, and the movement of the two piston rods is controlled by a pressing component.

[0011] Preferably, the telescopic component comprises a telescopic spring arranged in the hollow rod, and two ends of the telescopic spring are respectively fixedly connected to one end of the piston rod and the inner wall of the hollow rod.

[0012] Preferably, the pressing component comprises a plurality of first pressing balls equidistantly fixedly mounted on the side wall of the chain, and a second pressing ball is fixedly mounted on one end of the piston rod, and the second pressing ball is located on the moving path of the plurality of first pressing balls.

[0013] Preferably, the conducting direction of the one-way valve in the air outlet rod is from the inside of the hollow rod to the outside, and the conducting direction of the one-way valve in the air inlet rod is from the inside of the protective cover to the inside of the hollow rod.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. When the driving motor drives the spiral feeding plate to rotate, the rotating shaft will drive multiple stirring rods to stir the materials in the feed hopper under the transmission effect between the sprocket and the chain. No additional electric drive device is required. Only one driving motor is needed to achieve the effect of conveying and stirring materials, reducing electricity costs;

[0016] 2. When the chain is rotating, under the action of the pressing parts, the two sets of heat dissipation components will intermittently discharge the hot air accumulated in the protective cover, thereby achieving the effect of heat dissipation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a front three-dimensional structural schematic diagram of a single-layer plastic sheet extruder proposed by the utility model;

[0018] Figure 2 This is a top-down perspective structural diagram of a single-layer plastic sheet extruder proposed by the utility model;

[0019] Figure 3 This is a schematic diagram of a partial three-dimensional cross-sectional structure of a protective cover in a single-layer plastic sheet extruder proposed by the utility model;

[0020] Figure 4It is a schematic diagram of a partial three-dimensional cross-sectional structure of a heat dissipation component in a single-layer plastic sheet extruder proposed by the utility model;

[0021] Figure 5 for Figure 2 A magnified view of the structure in the middle.

[0022] In the figure: 1 protective cover, 2 feeding pipe, 3 feeding hopper, 4 dropping pipe, 5 driving motor, 6 rotating shaft, 7 stirring rod, 8 sprocket, 9 chain, 10 hollow rod, 11 piston rod, 12 air outlet rod, 13 air intake rod, 14 telescopic spring, 15 first ball, 16 second ball. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0024] The terms such as "upper", "lower", "left", "right", "middle" and "one" cited in the present utility model are only for the convenience of description and are not used to limit the scope of application of the present utility model. Changes or adjustments in their relative relationships shall be regarded as the scope of application of the present utility model without substantially changing the technical content.

[0025] Reference Figure 1-Figure 5 A single-layer plastic sheet extruder comprises a protective cover 1, a feed pipe 2 is fixedly mounted on the side wall of the protective cover 1, a feed hopper 3 is arranged above the feed pipe 2, a drop pipe 4 is fixedly mounted on the lower surface of the feed hopper 3, the drop pipe 4 is fixedly connected to the feed pipe 2, a spiral feed disc is arranged in the feed pipe 2, a transmission shaft is arranged at the end of the spiral feed disc close to the protective cover 1, a drive motor 5 is arranged at the end of the transmission shaft, the drive motor 5 is located in the protective cover 1, a rotating shaft 6 is horizontally mounted in the feed hopper 3, and a plurality of stirring rods 7 are fixedly mounted on the rotating shaft 6;

[0026] One end of the rotating shaft 6 passes through the feed hopper 3, and a sprocket 8 is fixedly sleeved on the end of the rotating shaft 6 passing through the feed hopper 3 and the output shaft of the driving motor 5. A chain 9 is meshed and wound around the two sprockets 8, and two holes are provided on the upper surface of the protective cover 1 for the chain 9 to pass through;

[0027] When the drive motor 5 is started, the output shaft of the drive motor 5 rotates with the transmission shaft and the spiral feed plate. At this time, under the transmission action of the two sprockets 8 and the chain 9, the rotating shaft 6 will also rotate together, and the multiple stirring rods 7 will also rotate with the rotating shaft 6. The multiple stirring rods 7 will stir the material in the feed hopper 3 to ensure that the raw materials fall into the feeding pipe 2 more evenly and smoothly, thereby ensuring that the glue output is more uniform to a certain extent. No additional electric drive device is required. Only one drive motor 5 is needed to achieve the effect of conveying and stirring materials, reducing electricity costs.

[0028] The side wall of the protective cover 1 is provided with two groups of heat dissipation components, which are used for heat dissipation of the protective cover 1. The side wall of the protective cover 1 is provided with an installation opening, and the two groups of heat dissipation components are fixedly installed in the two installation openings respectively. The heat dissipation components include a hollow rod 10 with one end fixedly installed in the installation opening and designed as a closed end, and a piston rod 11 inserted in the hollow rod 10 with a sliding seal. An air outlet rod 12 is fixedly installed at one end of the hollow rod 10 located in the outside world, and an air inlet rod 13 is fixedly installed on the surface of the hollow rod 10 located in the protective cover 1. Check valves are provided in both the air outlet rod 12 and the air inlet rod 13. The conducting direction of the check valve in the air outlet rod 12 is from the inside of the hollow rod 10 to the outside world, and the conducting direction of the check valve in the air inlet rod 13 is from the inside of the protective cover 1 to the inside of the hollow rod 10;

[0029] The piston rod 11 is connected to the hollow rod 10 through a telescopic component, and the telescopic component includes a telescopic spring 14 arranged in the hollow rod 10. The two ends of the telescopic spring 14 are respectively fixedly connected to one end of the piston rod 11 and the inner wall of the hollow rod 10. The two piston rods 11 are controlled to move by a pressing component. The pressing component includes a plurality of first pressing balls 15 equidistantly fixedly installed on the side wall of the chain 9. A second pressing ball 16 is fixedly installed at one end of the piston rod 11, and the second pressing ball 16 is located on the moving path of the plurality of first pressing balls 15.

[0030] When the chain 9 is rotating, the first balls 15 will intermittently abut against the two second balls 16. When the first balls 15 abut against the second balls 16, the piston rod 11 will move toward the direction close to the hollow rod 10 under the action of the pressure, and the volume inside the hollow rod 10 will decrease, the pressure will increase, and the gas inside the hollow rod 10 will be discharged from the gas outlet rod 12. When the first balls 15 no longer abut against the second balls 16, the piston rod 11 will move rapidly under the elastic potential energy of the telescopic spring 14. After reset, the volume inside the hollow rod 10 increases and the pressure decreases, and the gas inside the protective cover 1 will enter the hollow rod 10 from the air inlet rod 13. When the second ball 16 abuts against the first ball 15 next time, the gas inside the hollow rod 10 will be discharged to the outside from the air outlet rod 12 again. This reciprocating process can achieve the effect of heat dissipation in the protective cover 1. Because the drive motor 5 will generate heat when working and accumulate in the protective cover 1, and the drive motor 5 works in a high temperature environment for a long time, a short circuit may occur.

[0031] In the utility model, when the driving motor 5 is started, the output shaft of the driving motor 5 rotates with the transmission shaft and the spiral feeding disk. At this time, under the transmission action of the two sprockets 8 and the chain 9, the rotating shaft 6 will also rotate together, and the multiple stirring rods 7 will also rotate with the rotating shaft 6. The multiple stirring rods 7 will stir the material in the feed hopper 3 to ensure that the raw materials fall into the feeding pipe 2 more evenly and smoothly, thereby ensuring that the glue output is more uniform to a certain extent. No additional electric drive device is required. Only one driving motor 5 is required to achieve the effect of conveying and stirring materials, thereby reducing electricity costs.

[0032] In the present invention, unless otherwise clearly specified or limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense.

[0033] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A single-layer plastic sheet extruder, comprising a protective cover (1), characterized in that: A feeding pipe (2) is fixedly mounted on the side wall of the protective cover (1), a feeding hopper (3) is arranged above the feeding pipe (2), a dropping pipe (4) is fixedly mounted on the lower surface of the feeding hopper (3), the dropping pipe (4) is fixedly connected to the feeding pipe (2), a spiral feeding disc is arranged inside the feeding pipe (2), a transmission shaft is arranged at the end of the spiral feeding disc close to the protective cover (1), a driving motor (5) is arranged at the end of the transmission shaft, the driving motor (5) is located inside the protective cover (1), a rotating shaft (6) is horizontally rotatably mounted inside the feeding hopper (3), and a plurality of stirring rods (7) are fixedly mounted on the rotating shaft (6); One end of the rotating shaft (6) passes through the feed hopper (3), and a sprocket (8) is fixedly sleeved on the end of the rotating shaft (6) passing through the feed hopper (3) and the output shaft of the driving motor (5), and a chain (9) is meshed and wound on the two sprockets (8), and the upper surface of the protective cover (1) is provided with two openings for the chain (9) to pass through.

2. A single-layer plastic sheet extruder according to claim 1, characterized in that: The side wall of the protective cover (1) is provided with two groups of heat dissipation components, and the heat dissipation components are used to dissipate heat from the protective cover (1).

3. A single-layer plastic sheet extruder according to claim 2, characterized in that: The side wall of the protective cover (1) is provided with an installation opening, and the two groups of heat dissipation components are fixedly installed in the two installation openings respectively. The heat dissipation components include a hollow rod (10) fixedly installed in the installation opening and having one end designed to be closed, and a piston rod (11) inserted into the hollow rod (10) with a sliding seal. An air outlet rod (12) is fixedly installed at the end of the hollow rod (10) located outside, and an air inlet rod (13) is fixedly installed on the surface of the hollow rod (10) located inside the protective cover (1). Both the air outlet rod (12) and the air inlet rod (13) are provided with a one-way valve. The piston rod (11) is connected to the hollow rod (10) through a telescopic component, and the movement of the two piston rods (11) is controlled by a pressing component.

4. A single-layer plastic sheet extruder according to claim 3, characterized in that: The telescopic component comprises a telescopic spring (14) arranged in a hollow rod (10), and two ends of the telescopic spring (14) are respectively fixedly connected to one end of the piston rod (11) and the inner wall of the hollow rod (10).

5. A single-layer plastic sheet extruder according to claim 3, characterized in that: The pressing component comprises a plurality of first pressing balls (15) fixedly mounted at equal distances on the side wall of the chain (9); a second pressing ball (16) is fixedly mounted on one end of the piston rod (11); the second pressing ball (16) is located on the moving path of the plurality of first pressing balls (15).

6. A single-layer plastic sheet extruder according to claim 3, characterized in that: The conducting direction of the one-way valve in the air outlet rod (12) is from the inside of the hollow rod (10) to the outside, and the conducting direction of the one-way valve in the air inlet rod (13) is from the inside of the protective cover (1) to the inside of the hollow rod (10).

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