Screw extruder feeding mechanism with adjustable feeding amount

Abstract

The utility model discloses a feeding mechanism of a screw extruder with adjustable feeding quantity, which comprises a feeding cylinder, a screw rod, a screw rod, a screw rod, a screw rod, a screw rod, a screw rod, a screw rod and a screw rod, the cover plate is detachably installed at an upper cylinder opening of the feeding cylinder, a rotating shaft is rotatably installed on the cover plate and coaxially arranged in the feeding cylinder, the upper portion of the rotating shaft is connected with a stirring rod, and the lower portion of the rotating shaft is connected with a spiral blade; the first motor is mounted on the cover plate and is in transmission connection with the rotating shaft; the two inserting pieces are movably inserted into the two inserting piece openings respectively, and one sides of the two inserting pieces are arranged in a staggered mode so as to seal the lower barrel opening of the feeding barrel; the driving structure comprises two hinge shafts and a second motor, the two hinge shafts are rotatably installed on the same sides of the two insertion piece openings respectively and connected to the insertion pieces, and the second motor drives the two hinge shafts through a gear assembly to enable the two insertion pieces to rotate so as to open the lower barrel opening. According to the utility model, the problem that the feeding quantity cannot be adjusted when the hopper of the existing screw extruder is used for feeding is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of screw extruders, in particular to a feeding mechanism of a screw extruder with adjustable feeding amount. Background Art

[0002] The screw extruder relies on the pressure and shear force generated by the rotation of the screw to fully plasticize and evenly mix the material, and then form it through the die. When using the screw extruder, the material needs to be placed into it through the feed port. When loading, most people pour the material directly into the inner wall of the screw extruder hopper, which cannot be broken up. As a result, the material will accumulate on the inner wall of the hopper, resulting in slow screw extrusion processing efficiency in the screw extruder and the inability to adjust the feed amount.

[0003] The information disclosed in this background technology section is only intended to increase the understanding of the overall background of the present invention, and should not be regarded as an admission or any form of suggestion that the information constitutes the prior art already known to those skilled in the art. Utility Model Content

[0004] In order to overcome the defects of the prior art, a feeding mechanism for a screw extruder with adjustable feed amount is provided to solve the problem that the feed amount cannot be adjusted when loading the hopper of the existing screw extruder.

[0005] To achieve the above object, a feeding mechanism for a screw extruder with adjustable feed amount is provided, comprising:

[0006] A feeding cylinder, wherein the size of the lower portion of the feeding cylinder gradually decreases from top to bottom, and an insertion opening is formed on two opposite sides of the lower portion of the feeding cylinder;

[0007] a cover plate detachably mounted on the upper barrel opening of the feeding barrel, the cover plate being rotatably mounted with a rotating shaft, the rotating shaft being coaxially arranged in the feeding barrel and extending above the inserting opening, the upper portion of the rotating shaft being connected to a plurality of stirring rods arranged on the upper portion of the feeding barrel, and the lower portion of the rotating shaft being connected to a spiral blade arranged on the lower portion of the feeding barrel;

[0008] A first motor is mounted on the cover plate, and the first motor is transmission-connected to the rotating shaft;

[0009] Two inserts, the two inserts are movably inserted into the two insert openings, and one side of the two inserts is staggered to close the lower barrel opening of the feeding barrel;

[0010] The driving structure includes two hinged shafts and a second motor. The two hinged shafts are rotatably mounted on the same side of the two inserting openings. The hinged shafts are connected to the inserting pieces. The second motor drives the two hinged shafts through a gear assembly to simultaneously rotate the two inserting pieces toward the outside of the inserting openings to gradually open the lower barrel opening.

[0011] Furthermore, the gear assembly includes:

[0012] a driving gear, coaxially connected to an output end of the second motor;

[0013] The driven gears are coaxially connected to the two hinge shafts respectively, the driving gear is engaged with one driven gear, and the driving gear is connected to the other driven gear through a transmission gear.

[0014] Furthermore, a base is installed on the outer side of the feeding barrel, the second motor is fixed on the base, and the transmission gear is rotatably installed on the base.

[0015] Furthermore, the cover plate is provided with a feeding port.

[0016] Furthermore, the first motor is coaxially connected to the rotating shaft.

[0017] The beneficial effect of the present invention is that the feed mechanism of the screw extruder with adjustable feed rate of the present invention drives the two inserts to rotate toward the outside of the insert opening to gradually open the lower barrel opening through the driving structure at the same time, and drives the distance between the two inserts through the second motor to adjust the opening size of the lower barrel opening to adjust the feed rate, thereby realizing adjustable control of the feed rate of the screw extruder. In addition, the first motor drives the rotating shaft to rotate, driving the stirring rod to stir the raw materials on the upper part of the feeding barrel to disperse the raw materials and prevent the raw materials from agglomerating and accumulating at the upper barrel opening of the feeding barrel. On the other hand, the spiral blades transport the raw materials downward under the drive of rotation, preventing the raw materials from clogging the lower barrel opening of the feeding barrel. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Other features, objects and advantages of the present application will become more apparent upon reading the detailed description of non-limiting embodiments made with reference to the following drawings:

[0019] Figure 1 This is a structural schematic diagram of the feeding mechanism of a screw extruder with adjustable feed amount according to an embodiment of the present invention.

[0020] Figure 2 This is a cross-sectional view of a feeding mechanism of a screw extruder with adjustable feed rate according to an embodiment of the present invention.

[0021] Figure 3 for Figure 1 Cross-sectional view at AA in.

[0022] Figure 4 This is a schematic diagram of the state in which two inserts open the lower tube opening according to an embodiment of the utility model. DETAILED DESCRIPTION

[0023] The present application will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely for the purpose of explaining the relevant utility model and are not intended to limit the utility model. It should also be noted that, for ease of description, only the portions relevant to the utility model are shown in the accompanying drawings.

[0024] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0025] Reference Figures 1 to 4 As shown, the utility model provides a feeding mechanism for a screw extruder with adjustable feed amount, comprising: a feeding barrel 1, a cover plate 2, a first motor 3, an insert 4, and a driving structure 5.

[0026] In this embodiment, the feeding cylinder 1 is cylindrical in shape as a whole. Specifically, the upper portion of the feeding cylinder is cylindrical with a constant diameter, and the lower portion of the feeding cylinder is cylindrical with a variable diameter.

[0027] The size of the lower portion of the feeding barrel 1 gradually decreases from top to bottom. Insertion openings 10 are provided on opposite sides of the lower portion of the feeding barrel 1.

[0028] The cover plate 2 is detachably mounted on the upper opening of the feeding barrel 1. In this embodiment, the cover plate 2 is provided with a feeding port. The cover plate is circular and eccentrically disposed on the cover plate.

[0029] The cover plate 2 is rotatably mounted with a rotating shaft 21. The rotating shaft and the cover plate are coaxially arranged. The rotating shaft 21 is coaxially arranged in the feeding barrel 1.

[0030] See Figure 2 As shown, the rotating shaft 21 extends above the inserting port. The lower end of the rotating shaft extends to near the upper portion of the inserting port. The upper portion of the rotating shaft 21 is connected to a plurality of stirring rods 22 disposed on the upper portion of the feeding barrel 1. The lower portion of the rotating shaft 21 is connected to a spiral blade 23 disposed on the lower portion of the feeding barrel 1.

[0031] The first motor 3 is mounted on the cover plate 2 and is connected to the rotating shaft 21 in a transmission manner.

[0032] In a preferred embodiment, first motor 3 is coaxially connected to shaft 21. The first motor drives the shaft, driving the stirring rod to agitate the raw materials in the upper portion of the feeding barrel to disperse them and prevent them from agglomerating and accumulating at the upper barrel opening. Furthermore, the distance between the spiral blades and the inner wall of the feeding barrel is 1-2 mm. The rotation of the spiral blades transports the raw materials downward, preventing them from clogging the lower barrel opening.

[0033] There are two inserts 4. The inserts are circular. The two inserts 4 are movably inserted into the two insert openings. The inserts are arranged in a horizontal direction. One side of the two inserts 4 is staggered to close the lower barrel opening of the feeding barrel 1.

[0034] The driving structure 5 includes two hinged shafts and a second motor. The two hinged shafts are rotatably mounted on the same side of the two inserting openings. The hinged shafts are connected to the inserting piece 4.

[0035] See Figure 3 and Figure 4 As shown, the second motor drives the two hinged shafts simultaneously through the gear assembly to rotate the two inserts 4 toward the outside of the insert opening to gradually open the lower barrel opening. Furthermore, the distance between the two inserts is driven by the second motor to adjust the opening size of the lower barrel opening to adjust the feeding amount.

[0036] Continue reading Figure 3 and Figure 4 As shown, in this embodiment, the gear assembly includes: a driving gear 541 , a driven gear 542 and a transmission gear 543 .

[0037] The driving gear 541 is coaxially connected to the output end of the second motor. The two hinge shafts are coaxially connected to the driven gears 542. The driving gear 541 is meshed with one driven gear 542. The driving gear 541 is connected to the other driven gear 542 through the transmission gear 543.

[0038] As a preferred embodiment, a base 15 is installed on the outside of the feeding barrel 1. The second motor is fixed on the base 15. The transmission gear 543 is rotatably installed on the base 15.

[0039] In this embodiment, the transmission gear is rotatably mounted on the base via a wheel axle. One side of the transmission gear meshes with the driving gear, and the other side of the transmission gear meshes with another driven gear. Then, the second electric drive drives the rotation of the driving gear to achieve the two inserts rotating in opposite directions around the hinge axis.

[0040] In this embodiment, the size of the insert is adapted to the size of the port at the lower end of the charging barrel.

[0041] The feed mechanism of the screw extruder with adjustable feed rate of the present invention uses a drive structure to simultaneously drive two inserts to rotate toward the outside of the insert opening to gradually open the lower barrel opening. A second motor drives the distance between the two inserts, thereby adjusting the opening size of the lower barrel opening to adjust the feed rate, thereby achieving adjustable control of the feed rate of the screw extruder. In addition, the first motor drives the rotating shaft to rotate, driving the stirring rod to stir the raw materials in the upper part of the feeding barrel to disperse the raw materials and prevent the raw materials from agglomerating and accumulating at the upper barrel opening of the feeding barrel. On the other hand, the spiral blades, driven by rotation, transport the raw materials downward, preventing the raw materials from clogging the lower barrel opening of the feeding barrel.

[0042] The above description is merely a preferred embodiment of the present application and an illustration of the technical principles employed. Those skilled in the art should understand that the scope of the utility model disclosed in this application is not limited to the technical solutions formed by the specific combination of the above-mentioned technical features, but also encompasses other technical solutions formed by any combination of the above-mentioned technical features or their equivalents without departing from the concept of the utility model. For example, a technical solution formed by replacing the above-mentioned features with (but not limited to) technical features with similar functions disclosed in this application.

Claims

1. A screw extruder feeding mechanism with adjustable feed rate, characterized in that: include: A feeding cylinder, wherein the size of the lower portion of the feeding cylinder gradually decreases from top to bottom, and an insertion opening is formed on two opposite sides of the lower portion of the feeding cylinder; a cover plate detachably mounted on the upper barrel opening of the feeding barrel, the cover plate being rotatably mounted with a rotating shaft, the rotating shaft being coaxially arranged in the feeding barrel and extending above the inserting opening, the upper portion of the rotating shaft being connected to a plurality of stirring rods arranged on the upper portion of the feeding barrel, and the lower portion of the rotating shaft being connected to a spiral blade arranged on the lower portion of the feeding barrel; A first motor is mounted on the cover plate, and the first motor is transmission-connected to the rotating shaft; Two inserts, the two inserts are movably inserted into the two insert openings, and one side of the two inserts is staggered to close the lower barrel opening of the feeding barrel; The driving structure includes two hinged shafts and a second motor. The two hinged shafts are rotatably mounted on the same side of the two inserting openings. The hinged shafts are connected to the inserting pieces. The second motor drives the two hinged shafts through a gear assembly to simultaneously rotate the two inserting pieces toward the outside of the inserting openings to gradually open the lower barrel opening.

2. The screw extruder feeding mechanism with adjustable feed rate according to claim 1, characterized in that: The gear assembly comprises: a driving gear, coaxially connected to an output end of the second motor; The driven gears are coaxially connected to the two hinge shafts respectively, the driving gear is engaged with one driven gear, and the driving gear is connected to the other driven gear through a transmission gear.

3. The screw extruder feeding mechanism with adjustable feed rate according to claim 2, characterized in that: A base is installed on the outer side of the feeding cylinder, the second motor is fixed on the base, and the transmission gear is rotatably installed on the base.

4. The screw extruder feeding mechanism with adjustable feed rate according to claim 1, characterized in that: The cover plate is provided with a feeding port.

5. The feed mechanism of the screw extruder with adjustable feed amount according to claim 1, characterized in that: The first motor is coaxially connected to the rotating shaft.

Images