Plastic film raw material mixing device

Abstract

The plastic film raw material mixing device comprises a stirring mechanism and a lifting mechanism, the stirring mechanism comprises a mixing tank, a first driving piece, a rotating shaft and a plurality of first stirring blades, a feeding port is formed in the top of the mixing tank, a discharging port is formed in the bottom of the mixing tank, the rotating shaft is rotationally connected to the mixing tank, the rotating shaft and the mixing tank are coaxially arranged, and the first stirring blades are arranged on the rotating shaft. The first stirring blades are fixedly arranged on the rotating shaft; the lifting mechanism comprises a lead screw, a lifting block, a lifting plate and a second driving part, the lead screw is rotationally connected to the mixing tank, the lead screw is located at the position adjacent to the side wall of the mixing tank, the lead screw is parallel to the axial direction of the rotating shaft, the lifting block is in threaded connection with the lead screw, the lifting block is slidably connected with the mixing tank, and the lifting plate is slidably connected with the lead screw; the lifting plate can slide in the axial direction of the lead screw, the lifting plate is rotationally connected with the lifting block, the lifting plate is provided with a plurality of second stirring blades, and the second driving piece is used for driving the lead screw to rotate. And the raw material mixing uniformity can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of film production equipment, in particular to a plastic film raw material mixing device. Background Art

[0002] During the production process of plastic film, it is necessary to mix granular raw materials such as resin and filler evenly through stirring. Due to the different quality and density of various raw materials, the existing plastic film raw material mixing device is prone to stratification during the stirring process, causing the lighter raw materials in the mixing tank to float in the upper layer and the heavier raw materials to settle in the lower layer. In addition, the raw materials located near the side wall of the mixing tank are difficult to mix evenly with the raw materials located in the center of the mixing tank, resulting in uneven mixing of the raw materials, affecting the production quality of the plastic film. Utility Model Content

[0003] The present invention aims to solve, at least to a certain extent, one of the technical problems in the related art. To this end, the present invention provides a plastic film raw material mixing device that can evenly mix raw materials located at the upper and lower parts of a mixing tank, and can also move raw materials near the side walls of the mixing tank to the center for even mixing, thereby improving the uniformity of raw material mixing.

[0004] According to an embodiment of the present invention, a plastic film raw material mixing device is provided, including a stirring mechanism and a lifting mechanism, the stirring mechanism including a mixing tank, a first driving member, a rotating shaft and a plurality of first stirring blades, the top of the mixing tank is provided with a feeding port, the bottom of the mixing tank is provided with a discharge port, the rotating shaft is rotatably connected to the mixing tank, the rotating shaft and the mixing tank are coaxially arranged, the first stirring blades are fixedly provided on the rotating shaft, and the plurality of first stirring blades are evenly spaced along the axial direction of the rotating shaft; the lifting mechanism includes a screw rod, a lifting block, a lifting plate and a second driving member Part, the screw is rotatably connected to the mixing tank, the screw is located adjacent to the side wall of the mixing tank, the screw is arranged parallel to the axial direction of the rotating shaft, the lifting block is threadedly connected to the screw, and the lifting block is slidingly connected to the mixing tank, the lifting plate is slidably connected to the screw, the lifting plate can slide along the axial direction of the screw, the lifting plate is rotatably connected to the lifting block, the lifting plate is provided with a plurality of second stirring blades, and the plurality of second stirring blades are evenly spaced along the circumference of the lifting plate, and the second driving member is used to drive the screw to rotate.

[0005] A plastic film raw material mixing device according to an embodiment of the present utility model has at least the following beneficial effects: the raw materials are put into the mixing tank from the feed port, and the rotating shaft is driven to rotate by the first driving member, thereby driving the first stirring blade to stir the raw materials at the center of the mixing tank. Since the multiple first stirring blades are evenly arranged along the axial direction of the rotating shaft, the raw materials in the axial direction of the mixing tank can be stirred at the same time to improve the mixing efficiency. At the same time, since the lifting block is threadedly connected to the screw rod, and the lifting block is slidingly connected to the mixing tank, the lifting plate is slidingly connected to the screw rod, and the lifting plate is rotatably connected to the lifting block, the second driving member drives the screw rod to rotate, thereby driving the lifting block to move up and down along the axial direction of the screw rod, and the lifting block drives the lifting plate to move up and down along the axial direction of the screw rod. When the lifting plate moves up, it can lift the raw materials at the lower part of the mixing tank to the upper part, and when the lifting plate moves down, it can press the raw materials at the upper part of the mixing tank to the lower part, thereby reducing the possibility of raw material stratification and making the raw materials in the upper and lower parts of the mixing tank evenly mixed. In addition, the lifting plate can rotate under the drive of the rotating shaft while it is lifting and lowering, thereby driving the second stirring blade to rotate. The second stirring blade pushes the raw materials near the side wall of the mixing tank to the center and mixes them evenly with the raw materials at the center, which can improve the mixing uniformity of the raw materials. After mixing, the raw materials are discharged from the discharge port.

[0006] According to some embodiments of the present invention, the side wall of the mixing tank is provided with a first slide groove, the first slide groove is arranged along the axial direction of the screw rod, and the lifting block is provided with a sliding rod, and the sliding rod is slidably connected to the first slide groove.

[0007] According to some embodiments of the present invention, the lifting block is provided with an annular guide groove, the lifting plate is provided with an annular guide block, the annular guide block is embedded in the annular guide groove, and the annular guide block can rotate along the annular guide groove.

[0008] According to some embodiments of the present invention, the screw rod is provided with a second sliding groove, which is arranged along the axial direction of the screw rod, and the lifting plate is provided with a slider, which is slidably connected to the second sliding groove.

[0009] According to some embodiments of the present invention, the screw rod is provided with two limit blocks, the lifting block and the lifting plate are located between the two limit blocks, and the two limit blocks can respectively abut the lifting block and the lifting plate to prevent the lifting block and the lifting plate from moving.

[0010] According to some embodiments of the present invention, a plurality of second stirring blades are provided on the top and bottom surfaces of the lifting plate, and a plurality of protrusions are protruding from opposite sides of the second stirring blade, and the plurality of protrusions are evenly spaced along the length direction of the second stirring blade.

[0011] According to some embodiments of the present invention, an air outlet is provided at the top of the mixing tank, and a plurality of air inlets are provided on the bottom side wall of the mixing tank. The plurality of air inlets are evenly spaced along the circumference of the mixing tank, and the air inlets are inclined upward. The air inlets are connected to an air pump through an air inlet pipe, and the air inlet pipe is provided with a heating element and an air source triplet. The heating element is used to heat the gas, and the air source triplet is used to filter moisture and oil in the gas.

[0012] According to some embodiments of the present invention, the mixing tank is provided with a third driving member and a rotating block, the rotating block is rotatably connected to the mixing tank, a plurality of scrapers are provided at circumferential intervals on the rotating block, the scrapers abut against the bottom wall of the mixing tank, and the third driving member is used to drive the rotating block to rotate.

[0013] According to some embodiments of the present invention, the scraper plate is configured to be arc-shaped, and the protruding direction of the scraper plate is opposite to the rotation direction of the rotating block, and the discharge port is located at the arc center of the scraper plate.

[0014] According to some embodiments of the present invention, the lifting mechanism is provided in plurality, and the plurality of lifting mechanisms are arranged at intervals along the circumference of the mixing tank.

[0015] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0017] Figure 1 This is a cross-sectional view of a plastic film raw material mixing device according to an embodiment of the present utility model;

[0018] Figure 2 This is a cross-sectional view of a lifting block and a lifting plate of a plastic film raw material mixing device according to an embodiment of the present utility model;

[0019] Figure 3 2. It is a top view of the lifting plate of the plastic film raw material mixing device according to an embodiment of the present utility model;

[0020] Figure 4 This is a top sectional view of a plastic film raw material mixing device according to an embodiment of the present utility model;

[0021] Figure 5 This is a partial structural diagram of a plastic film raw material mixing device according to an embodiment of the present utility model;

[0022] Figure 6It is a partial structural schematic diagram of a screw rod of a plastic film raw material mixing device according to an embodiment of the present utility model.

[0023] Description of reference numerals:

[0024] Stirring mechanism 100, mixing tank 110, feed port 111, discharge port 112, first chute 113, air outlet 114, air inlet 115, third driving member 116, rotating block 117, scraper 118, first driving member 120, rotating shaft 130, first stirring blade 140;

[0025] Lifting mechanism 200, screw rod 210, second slide groove 211, limiting block 212, lifting block 220, slide rod 221, annular guide groove 222, lifting plate 230, second stirring blade 231, annular guide block 232, slider 233, protrusion 234, second driving member 240;

[0026] Air pump 300, air inlet pipe 400, heating element 500, and air source triplex 600. DETAILED DESCRIPTION

[0027] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0028] In the description of the present invention, it should be understood that descriptions involving orientations, 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. They 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. Therefore, they cannot be understood as limitations on the present invention.

[0029] In the description of this utility model, "several" means one or more, "many" means more than two, "greater than," "less than," and "exceed" are understood to exclude the number itself, while "above," "below," and "within" are understood to include the number itself. The use of "first" and "second" in the description is solely for the purpose of distinguishing technical features and is not to be construed as indicating or implying relative importance, implicitly specifying the number of the indicated technical features, or implicitly specifying the order of the indicated technical features.

[0030] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0031] It is understandable that, referring to Figures 1 to 3 The utility model is a plastic film raw material mixing device, comprising a stirring mechanism 100 and a lifting mechanism 200, the stirring mechanism 100 comprises a mixing tank 110, a first driving member 120, a rotating shaft 130 and a plurality of first stirring blades 140, the mixing tank 110 is provided with a feeding port 111 at the top, and a discharging port 112 at the bottom of the mixing tank 110, the rotating shaft 130 is rotatably connected to the mixing tank 110, the rotating shaft 130 is coaxially arranged with the mixing tank 110, the first stirring blade 140 is fixedly arranged on the rotating shaft 130, and the plurality of first stirring blades 140 are evenly spaced along the axial direction of the rotating shaft 130; the lifting mechanism 200 comprises a screw rod 210, a lifting block 220, a lifting plate 230, and a lifting plate 231. 0 and a second driving member 240, the screw rod 210 is rotatably connected to the mixing tank 110, the screw rod 210 is located adjacent to the side wall of the mixing tank 110, the screw rod 210 is arranged parallel to the axial direction of the rotating shaft 130, the lifting block 220 is threadedly connected to the screw rod 210, and the lifting block 220 is slidingly connected to the mixing tank 110, the lifting plate 230 is slidingly connected to the screw rod 210, the lifting plate 230 can slide along the axial direction of the screw rod 210, the lifting plate 230 is rotatably connected to the lifting block 220, the lifting plate 230 is provided with a plurality of second stirring blades 231, and the plurality of second stirring blades 231 are evenly arranged along the circumference of the lifting plate 230, and the second driving member 240 is used to drive the screw rod 210 to rotate.

[0032] The raw materials are put into the mixing tank 110 from the feed port 111, and the rotating shaft 130 is driven to rotate by the first driving member 120, thereby driving the first stirring blade 140 to stir the raw materials at the center of the mixing tank 110. Since the multiple first stirring blades 140 are evenly spaced along the axial direction of the rotating shaft 130, the raw materials in the axial direction of the mixing tank 110 can be stirred at the same time to improve the mixing efficiency. At the same time, since the lifting block 220 is threadedly connected to the screw rod 210, and the lifting block 220 is slidably connected to the mixing tank 110, the lifting plate 230 is slidably connected to the screw rod 210. Then, the lifting plate 230 is rotatably connected to the lifting block 220, and the second driving member 240 drives the screw 210 to rotate, thereby driving the lifting block 220 to move up and down along the axial direction of the screw 210. The lifting block 220 drives the lifting plate 230 to move up and down along the axial direction of the screw 210. When the lifting plate 230 moves up, it can lift the raw materials in the lower part of the mixing tank 110 to the upper part. When the lifting plate 230 moves down, it can press the raw materials in the upper part of the mixing tank 110 to the lower part, thereby reducing the possibility of raw materials stratification and ensuring uniform mixing of the raw materials in the upper and lower parts of the mixing tank 110. In addition, while the lifting plate 230 moves up and down, it can rotate under the drive of the rotating shaft 130, thereby driving the second stirring blade 231 to rotate. The second stirring blade 231 pushes the raw materials near the side wall of the mixing tank 110 to the center, mixing them evenly with the raw materials in the center, thereby improving the mixing uniformity of the raw materials. After mixing, the raw materials are discharged from the discharge port 112.

[0033] Furthermore, by evenly arranging the plurality of second stirring blades 231 along the circumference of the lifting plate 230 , the stirring and pushing efficiency of the second stirring blades 231 can be improved.

[0034] It should be noted that the first driving member 120 can be a servo motor or a stepping motor, etc., which can drive the rotating shaft 130 to rotate, and the second driving member 240 can be a bidirectional servo motor or a bidirectional stepping motor, etc., which can drive the screw rod 210 to rotate in both directions.

[0035] Since the lifting block 220 is threadedly connected to the screw rod 210, the bidirectional rotation of the screw rod 210 can drive the lifting block 220 to move up and down along the axial direction of the screw rod 210. When the lifting block 220 rises or falls to a preset position, the second driving member 240 drives the screw rod 210 to rotate in the opposite direction to realize the periodic lifting movement of the lifting block 220.

[0036] The minimum distance between the screw rod 210 and the side wall of the mixing tank 110 is greater than the radius length of the lifting plate 230, the radius length of the lifting plate 230 is greater than or equal to the length of the second stirring blade 231, and the minimum distance between the lifting plate 230 and the side wall of the mixing tank 110 is 1 to 2 cm, which can prevent the lifting plate 230 and the second stirring blade 231 from colliding and wearing with the side wall of the mixing tank 110 when rotating.

[0037] It is understandable that, referring to Figure 1 and Figure 2 The side wall of the mixing tank 110 is provided with a first chute 113, which is arranged along the axial direction of the screw rod 210. The lifting block 220 is provided with a slide rod 221, which is slidably connected to the first chute 113. The slide rod 221 slides in the first chute 113 to guide the lifting block 220 along the axial direction of the screw rod 210. This can reduce the shaking of the lifting block 220 during the lifting process, thereby improving the stability of the lifting block 220 and the lifting plate 230.

[0038] It is understandable that, referring to Figure 2 and Figure 3The lifting block 220 is provided with an annular guide groove 222, and the lifting plate 230 is provided with an annular guide block 232. The annular guide block 232 is embedded in the annular guide groove 222 and can rotate along the annular guide groove 222. By embedding the annular guide block 232 in the annular guide groove 222, when the lifting plate 230 rotates relative to the lifting block 220, the annular guide block 232 can rotate along the annular guide groove 222. The annular guide groove 222 is used to limit the movement of the annular guide block 232, which can improve the rotation stability of the lifting plate 230. Moreover, the side wall of the annular guide groove 222 abuts against the annular guide block 232, which can support and fix the lifting plate 230 in the annular guide groove 222, thereby supporting and fixing the lifting plate 230, so that the lifting plate 230 can move upward synchronously with the lifting block 220.

[0039] It should be noted that the cross-sectional shape of the annular guide block 232 may be an inverted trapezoid or a T-shape, and the shape of the annular guide groove 222 matches the shape of the annular guide block 232 , thereby being able to support and fix the lifting plate 230 .

[0040] It is understandable that, referring to Figure 2 、 Figure 3 and Figure 6 The screw rod 210 is provided with a second chute 211, which is arranged along the axial direction of the screw rod 210. The lifting plate 230 is provided with a slider 233, which is slidably connected to the second chute 211. The slider 233 is slidably connected to the second chute 211, and the second chute 211 is arranged along the axial direction of the screw rod 210. It can guide the slider 233 to move along the axial direction of the screw rod 210, thereby guiding the lifting plate 230 to move up and down, thereby improving the stability of the lifting plate 230. In addition, the side wall of the second chute 211 abuts against the slider 233, so that the screw rod 210 can drive the lifting plate 230 to rotate synchronously with the screw rod 210, thereby achieving the lifting and rotating of the lifting plate 230.

[0041] It is understandable that, referring to Figure 1 The screw rod 210 is provided with two limit blocks 212. The lifting block 220 and the lifting plate 230 are located between the two limit blocks 212. The two limit blocks 212 can respectively abut the lifting block 220 and the lifting plate 230 to prevent the movement of the lifting block 220 and the lifting plate 230. By the two limit blocks 212 abutting the lifting block 220 and the lifting plate 230 respectively to prevent the movement of the lifting block 220 and the lifting plate 230, the lifting and lowering range of the lifting block 220 and the lifting plate 230 can be limited, thereby reducing the risk of the lifting block 220 and the lifting plate 230 colliding with the inner wall of the mixing tank 110, thereby improving the safety of the plastic film raw material mixing device.

[0042] It is understandable that, referring to Figures 1 to 3The top and bottom surfaces of the lifting plate 230 are both provided with a plurality of second stirring blades 231, and the opposite sides of the second stirring blades 231 are both provided with a plurality of protrusions 234, and the plurality of protrusions 234 are evenly spaced along the length direction of the second stirring blades 231. By providing the plurality of second stirring blades 231 on the top and bottom surfaces of the lifting plate 230, when the lifting plate 230 is rotated, the second stirring blades 231 on the top and bottom surfaces of the lifting plate 230 can simultaneously push the raw materials on the upper and lower sides of the lifting plate 230 to the center of the mixing tube, thereby improving the pushing efficiency of the raw materials, and by protruding the plurality of protrusions 234 on the opposite sides of the second stirring blades 231, and the plurality of protrusions 234 are evenly spaced along the length direction of the second stirring blades 231, the contact area between the second stirring blades 231 and the raw materials can be increased, thereby increasing the pushing amount of the raw materials, thereby improving the pushing efficiency of the raw materials.

[0043] It should be noted that the shape of the protrusion 234 can be set to be semicircular, which can reduce the collision damage to the raw materials, thereby reducing the generation of raw material debris and improving the quality of raw material mixing.

[0044] It is understandable that, referring to Figure 1 and Figure 5 An air outlet 114 is provided on the top of the mixing tank 110, and a plurality of air inlets 115 are provided on the bottom side wall of the mixing tank 110. The plurality of air inlets 115 are evenly spaced along the circumference of the mixing tank 110, and the air inlets 115 are tilted upward. The air inlet 115 is connected to the air pump 300 through the air inlet pipe 400. The air inlet pipe 400 is provided with a heating element 500 and an air source triplet 600. The heating element 500 is used to heat the gas, and the air source triplet 600 is used to filter moisture and oil in the gas. By opening a plurality of air inlets 115 on the bottom sidewall of the mixing tank 110, the plurality of air inlets 115 are evenly spaced along the circumference of the mixing tank 110. An air pump 300 delivers air to the air inlet pipe 400, and the heating element 500 heats the air in the air inlet pipe 400. The heated air is then fed into the mixing tank 110 through the air inlet 115 at the bottom of the mixing tank 110. The air then moves upward, removing moisture from the raw materials and being discharged through the air outlet 114 at the top of the mixing tank 110. This can dry the raw materials in the mixing tank 110. Furthermore, since the air inlet 115 is tilted upward, the air flow can be used to drive the raw materials at the bottom of the mixing tank 110 upward, thereby improving the uniformity of mixing. In addition, the air source triplex 600 filters the air fed into the mixing tank 110 to remove moisture and oil from the air, thereby reducing contamination of the raw materials in the mixing tank 110.

[0045] It is understandable that, referring to Figure 1 and Figure 4The mixing tank 110 is provided with a third driving member 116 and a rotating block 117. The rotating block 117 is rotatably connected to the mixing tank 110. A plurality of scrapers 118 are provided at intervals along the circumference of the rotating block 117. The scrapers 118 abut against the bottom wall of the mixing tank 110. The third driving member 116 is used to drive the rotating block 117 to rotate. The third driving member 116 drives the rotating block 117 to rotate, thereby driving the scrapers 118 to rotate. The rotation of the scrapers 118 simultaneously drives the raw materials at the bottom of the mixing tank 110 to be discharged toward the discharge port 112, thereby improving the discharge efficiency and reducing the amount of raw materials remaining in the circumferential direction of the bottom of the mixing tank 110, thereby improving the utilization rate of the raw materials.

[0046] It should be noted that the third driving member 116 can be a stepping motor or a servo motor, etc., as long as it can drive the rotating block 117 to rotate.

[0047] Specifically, refer to Figure 4 The scraper plate 118 is configured to be arc-shaped, and the protruding direction of the scraper plate 118 is opposite to the rotation direction of the rotating block 117. The discharge port 112 is located at the center of the arc of the scraper plate 118. By configuring the scraper plate 118 to be arc-shaped and the protruding direction of the scraper plate 118 to be opposite to the rotation direction of the rotating block 117, when the scraper plate 118 rotates, the raw materials in the radial direction of the bottom of the mixing tank 110 can move along the arc-shaped sidewall of the scraper plate 118 and be concentrated at the center of the arc, thereby pushing the raw materials in the radial direction toward the discharge port 112 for discharge. This can reduce the amount of raw materials remaining in the radial direction of the bottom of the mixing tank 110, thereby improving the utilization rate of the raw materials.

[0048] It is understandable that, referring to Figure 1 and Figure 4 A plurality of lifting mechanisms 200 are provided, and the plurality of lifting mechanisms 200 are spaced apart along the circumference of the mixing tank 110. By providing a plurality of lifting mechanisms 200 and arranging the plurality of lifting mechanisms 200 along the circumference of the mixing tank 110, the raw materials near the sidewalls in the circumferential direction of the mixing tank 110 can be simultaneously pushed to the center, thereby improving mixing uniformity and reducing mixing blind spots.

[0049] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the scope of knowledge possessed by ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A plastic film raw material mixing device, characterized in that: include: A stirring mechanism, comprising a mixing tank, a first driving member, a rotating shaft and a plurality of first stirring blades, wherein a feeding port is provided at the top of the mixing tank, a discharging port is provided at the bottom of the mixing tank, the rotating shaft is rotatably connected to the mixing tank, the rotating shaft is coaxially arranged with the mixing tank, the first stirring blades are fixedly arranged on the rotating shaft, and the plurality of first stirring blades are evenly spaced along the axial direction of the rotating shaft; The lifting mechanism comprises a screw rod, a lifting block, a lifting plate and a second driving member, wherein the screw rod is rotatably connected to the mixing tank, the screw rod is located adjacent to the side wall of the mixing tank, the screw rod is arranged parallel to the axial direction of the rotating shaft, the lifting block is threadedly connected to the screw rod, and the lifting block is slidably connected to the mixing tank, the lifting plate is slidably connected to the screw rod, the lifting plate can slide along the axial direction of the screw rod, the lifting plate is rotatably connected to the lifting block, the lifting plate is provided with a plurality of second stirring blades, and the plurality of second stirring blades are evenly arranged along the circumference of the lifting plate, and the second driving member is used to drive the screw rod to rotate.

2. The plastic film raw material mixing device according to claim 1, characterized in that: The side wall of the mixing tank is provided with a first slide groove, and the first slide groove is arranged along the axial direction of the screw rod. The lifting block is provided with a sliding rod, and the sliding rod is slidably connected to the first slide groove.

3. The plastic film raw material mixing device according to claim 1, characterized in that: The lifting block is provided with an annular guide groove, and the lifting plate is provided with an annular guide block, the annular guide block is embedded in the annular guide groove, and the annular guide block can rotate along the annular guide groove.

4. The plastic film raw material mixing device according to claim 1, characterized in that: The screw rod is provided with a second slide groove, and the second slide groove is arranged along the axial direction of the screw rod. The lifting plate is provided with a slider, and the slider is slidably connected to the second slide groove.

5. The plastic film raw material mixing device according to claim 1, characterized in that: The screw rod is provided with two limit blocks, the lifting block and the lifting plate are located between the two limit blocks, and the two limit blocks can respectively abut against the lifting block and the lifting plate to prevent the lifting block and the lifting plate from moving.

6. The plastic film raw material mixing device according to claim 1, characterized in that: The top surface and the bottom surface of the lifting plate are both provided with a plurality of the second stirring blades, and the opposite sides of the second stirring blade are both protruding with a plurality of protrusions, and the plurality of protrusions are evenly spaced and arranged along the length direction of the second stirring blade.

7. The plastic film raw material mixing device according to claim 1, characterized in that: An air outlet is provided on the top of the mixing tank, and a plurality of air inlets are provided on the bottom side wall of the mixing tank. The plurality of air inlets are evenly spaced along the circumference of the mixing tank, and the air inlets are arranged obliquely upward. The air inlets are connected to an air pump via an air inlet pipe, and the air inlet pipe is provided with a heating element and an air source triplet. The heating element is used to heat the gas, and the air source triplet is used to filter moisture and oil in the gas.

8. The plastic film raw material mixing device according to claim 1, characterized in that: The mixing tank is provided with a third driving member and a rotating block, the rotating block is rotatably connected to the mixing tank, a plurality of scraping plates are arranged at circumferential intervals on the rotating block, the scraping plates abut against the bottom wall of the mixing tank, and the third driving member is used to drive the rotating block to rotate.

9. The plastic film raw material mixing device according to claim 8, characterized in that: The scraper plate is arranged in an arc shape, and the protruding direction of the scraper plate is opposite to the rotation direction of the rotating block, and the discharge port is located at the arc center of the scraper plate.

10. The plastic film raw material mixing device according to claim 1, characterized in that: The lifting mechanism is provided in plurality, and the plurality of lifting mechanisms are arranged at intervals along the circumference of the mixing tank.

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