A mixing device for preparing PVC heat-shrinkable film
By combining a ratchet ring and an elastic spiral ring plate, the problems of material sedimentation and discharge difficulties in the preparation of PVC heat shrink film are solved, achieving uniform mixing and efficient discharge, thus improving production efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- YUELONG FILM CO LTD FOSHAN CHINA
- Filing Date
- 2025-09-29
- Publication Date
- 2026-06-23
AI Technical Summary
During the preparation of PVC heat shrink film, material is prone to sedimentation, resulting in uneven mixing. Furthermore, material tends to adhere to the inner wall and blades of the mixing drum, leading to low discharge efficiency.
The material adopts a combination structure of ratchet ring and elastic spiral ring plate. The ratchet ring rotates in the opposite direction to drive the elastic spiral ring plate to rotate in the opposite direction on the inner wall of the barrel for stirring. The bottom baffle plate stirs the material to ensure uniform mixing. When rotating in the forward direction, the elastic spiral ring plate stops rotating, and the upper cover plate moves downward to squeeze the material and clean the inner wall, achieving efficient discharge.
It improves the uniformity of material mixing and discharge efficiency, solves the problems of uneven mixing and difficult discharge, and enhances production efficiency.
Smart Images
Figure CN224391571U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of film preparation technology, specifically to a mixing device for preparing PVC heat shrink film. Background Technology
[0002] Mixing equipment for preparing PVC heat-shrinkable film typically employs a combination system of a high-speed mixer (hot mixer) and a cold mixer. First, raw materials such as PVC resin, plasticizers (e.g., DOP), stabilizers, and lubricants are heated (100-120°C) in the high-speed hot mixer by the shear friction of the stirring paddles, achieving uniform mixing and initial gelation. Subsequently, the materials are transferred to a cold mixer for rapid cooling to 40-50°C to prevent clumping and maintain a loose state, providing homogeneous raw materials for subsequent extrusion blow molding or calendering. The key to this equipment lies in precise temperature control and mixing efficiency, ensuring the dispersibility and thermal stability of each component in the formulation.
[0003] In the process of making PVC heat shrink film, mixing equipment is used to mix the materials evenly. However, during the mixing process, the materials are prone to sedimentation, resulting in uneven mixing. Furthermore, during the discharge process, the materials tend to adhere to the inner wall of the mixing drum and the mixing blades, making it difficult to discharge and reducing the efficiency of material discharge.
[0004] To address the aforementioned technical problems, patent number 202420922314.6 discloses a stirring device for preparing formable polyimide films, relating to the field of film preparation technology. The device includes a mixer body; a control console, positioned on the upper surface of the mixer body, for controlling the rotation of the stirring roller; a stirring roller, positioned on the inner wall of the mixing drum, for mixing the raw materials; a mixing drum, positioned on the upper surface of the mixer body, for holding the raw materials; a discharge pipe, positioned on the surface of the mixing drum, through which the mixed raw materials are discharged; a motor, positioned at one end of the stirring roller, for driving the stirring roller to rotate; and a cleaning device, positioned on the surface of the stirring roller, for cleaning the large amount of residual raw materials adhering to the inner wall of the mixing drum. This invention solves the problem that the raw materials used in film preparation are adhesive, and some of the raw materials adhere to the inner wall of the mixing drum, making it inconvenient for workers to clean the mixing drum due to the large amount of residual film raw materials adhering to the inner wall. Summary of the Invention
[0005] To achieve the above objectives, the technical solution adopted in this application is as follows: a mixing device for preparing PVC heat shrink film, comprising a base, an mounting plate fixedly installed above the base, a material cylinder provided above the mounting plate, a stirring assembly provided above the inner wall of the material cylinder, the stirring assembly comprising an open ring plate fixedly installed above the material cylinder, a plurality of side rods symmetrically and evenly distributed and fixedly connected above the inner wall of the open ring plate, an upper shell plate fixedly connected above the plurality of side rods, a threaded cylinder rod movably installed on the inner wall of the upper shell plate, a ratchet ring threadedly connected through the upper shell plate below the threaded cylinder rod, a fixing ring fixedly connected below the inner ring of the ratchet ring, and an elastic spiral ring plate fixedly connected below the fixing ring.
[0006] In a further preferred embodiment, a fixing plate is fixedly connected below the elastic spiral ring plate, and a lower sleeve is fixedly connected below the fixing plate near one end of the threaded cylinder rod, and is movably sleeved below the outer wall of the threaded cylinder rod. Several levers are fixedly connected to the outer wall of the lower sleeve in a circumferentially evenly distributed manner.
[0007] In a further preferred embodiment, a positioning gear is fixedly connected to the outer wall above the threaded cylinder, and an auxiliary gear is meshed with the outer wall of the positioning gear.
[0008] In a further preferred embodiment, a motor is fixedly connected above the auxiliary gear, and the motor is fixedly mounted above the inner wall of the upper shell plate.
[0009] In a further preferred embodiment, an auxiliary disk is fixedly installed below the material cylinder, and the auxiliary disk is movably connected to several of the dial plates.
[0010] Further preferably, the discharge assembly includes an upper cover plate fixedly installed on the outer ring of the ratchet ring, with limiting grooves on both sides of the upper cover plate surface. Two material distribution plates are fixedly connected to the inner wall of the material cylinder in a symmetrical and uniform manner, and the material distribution plates are fixedly installed on the inner wall of the open ring plate above them. Several discharge grooves are evenly distributed in a circular pattern on the concave surface of the auxiliary disc, and several check valve pipes are fixedly connected to the bottom wall of the discharge groove in a straight line in a uniform manner.
[0011] In a further preferred embodiment, the auxiliary disk has several inclined ribs evenly distributed and fixedly connected to its concave surface, and the inclined ribs are movably connected to the lever plate.
[0012] In a further preferred embodiment, a guide groove is provided in the middle of the upper surface of the base, and the bottom end of the threaded cylinder is movably installed on the bottom of the inner wall of the guide groove.
[0013] In a further preferred embodiment, a discharge frame is fixedly installed through the base on one side of the guide chute, and two support rods are symmetrically and evenly distributed and fixedly connected to the discharge frame on the side near the base, with the other ends of the two support rods fixedly installed at the front end of the base.
[0014] Preferably, a control panel is fixedly connected to the upper front end of the base, and control buttons are fixedly connected to both sides of the control panel surface.
[0015] Compared with the prior art, the beneficial effects of this application are as follows:
[0016] (1) By using the reverse rotation of the ratchet ring, the elastic spiral ring plate is driven to rotate in the opposite direction on the inner wall of the barrel, and the material is stirred from bottom to top, and the bottom is stirred by the paddle plate, so that the material can be mixed by the up-and-down tumbling and bottom stirring, thereby improving the uniformity of the material mixing.
[0017] (2) By rotating in the forward direction, under the forward locking engagement of the ratchet ring, the reverse rotation of its threaded cylinder rod drives the ratchet ring to move downward on the outer wall of the threaded cylinder rod. At this time, the elastic spiral ring plate stops rotating and drives the upper cover plate to move downward in the material cylinder, squeezing the material. Under the downward pressure engagement, the check valve pipe is opened, and the material is discharged. During the downward movement of the upper cover plate, the material on the inner wall of the material cylinder is scraped and cleaned and falls to the bottom. The material adhering to the surface of the elastic spiral ring plate is squeezed and comes into contact with each other and falls to the bottom. Thus, the stirred material can be discharged by downward squeezing. During the squeezing process, the material on the inner wall of the material cylinder and the surface of the stirring blade is cleaned, improving the efficiency of material discharge. Attached Figure Description
[0018] Figure 1 This invention provides a three-dimensional structural diagram of a mixing device for preparing PVC heat-shrinkable film. Figure 1 ;
[0019] Figure 2 This invention provides a three-dimensional structural diagram of a mixing device for preparing PVC heat-shrinkable film. Figure 2 ;
[0020] Figure 3 This is a partial structural diagram of a mixing device for preparing PVC heat-shrinkable film according to the present invention. Figure 1 ;
[0021] Figure 4 This is a partial structural diagram of a mixing device for preparing PVC heat-shrinkable film according to the present invention. Figure 2 ;
[0022] Figure 5 This is a partial structural diagram of a mixing device for preparing PVC heat-shrinkable film according to the present invention. Figure 3 ;
[0023] Figure 6 This invention provides a schematic diagram of the inner wall structure of a mixing device for preparing PVC heat-shrinkable film. Figure 1 ;
[0024] Figure 7 This is a partial structural diagram of a mixing device for preparing PVC heat-shrinkable film according to the present invention. Figure 4 ;
[0025] Figure 8 This invention provides a schematic diagram of the inner wall structure of a mixing device for preparing PVC heat-shrinkable film. Figure 2 ;
[0026] Figure 9 This invention provides a schematic diagram of the inner wall structure of a mixing device for preparing PVC heat-shrinkable film. Figure 3 ;
[0027] Figure 10 This is a schematic diagram of the auxiliary disc in a mixing device for preparing PVC heat-shrinkable film according to the present invention.
[0028] In the diagram: 1. Base; 2. Mounting plate; 3. Material cylinder; 4. Discharge frame; 5. Support rod; 6. Mixing assembly; 601. Open ring plate; 602. Side rod; 603. Upper shell plate; 604. Positioning gear; 605. Threaded cylinder rod; 606. Ratchet ring; 607. Auxiliary gear; 608. Motor; 609. Elastic spiral ring plate; 610. Auxiliary disc; 611. Fixing ring; 612. Lower sleeve; 613. Pulley plate; 614. Fixing plate; 7. Discharge assembly; 701. Material distribution plate; 702. Upper cover plate; 703. Limiting groove; 704. Inclined rib plate; 705. Discharge chute; 706. Check valve pipe; 707. Guide chute; 8. Control panel; 9. Control buttons. Detailed Implementation
[0029] The present application will be further described below with reference to specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.
[0030] In the description of this application, it should be noted that the terms "center", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., which indicate the orientation and positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and should not be construed as limiting the specific protection scope of this application.
[0031] It should be noted that the terms "first," "second," etc., in the specification and claims of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.
[0032] The terms “comprising” and “having”, and any variations thereof, in the specification and claims of this application are intended to cover non-exclusive inclusion, for example, a process, method, system, product, or device that includes a series of steps or units is not necessarily limited to those steps or units that are explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to such process, method, product, or device.
[0033] The existing technology has the following drawbacks: during the mixing process, the material is prone to sedimentation, resulting in uneven mixing. Furthermore, during the discharge process, the material tends to adhere to the inner wall of the mixing drum and the mixing blades, making it difficult to discharge and reducing the efficiency of material discharge.
[0034] As an improvement, such as Figure 1 - Figure 10 As shown, the preferred embodiment of this application is as follows:
[0035] A mixing device for preparing PVC heat-shrinkable film includes a base 1, an mounting plate 2 fixedly installed above the base 1, a material cylinder 3 above the mounting plate 2, and a stirring assembly 6 above the inner wall of the material cylinder 3. The stirring assembly 6 includes an open ring plate 601 fixedly installed above the material cylinder 3. Several side rods 602 are symmetrically and evenly distributed and fixedly connected to the inner wall of the open ring plate 601. An upper shell plate 603 is fixedly connected above the side rods 602. A threaded cylinder rod 605 is movably installed on the inner wall of the upper shell plate 603. A ratchet ring 606 is threadedly connected to the lower part of the threaded cylinder rod 605 through the upper shell plate 603. A fixing ring 611 is fixedly connected to the lower part of the inner ring of the ratchet ring 606. An elastic spiral ring plate 609 is fixedly connected to the lower part of the fixing ring 611. The motor 608 rotates, driving an auxiliary gear 607 to rotate accordingly. Subsequently, a positioning gear 604 meshing with the auxiliary gear 607 rotates in the opposite direction, causing the threaded cylinder rod 605 located in the middle of the positioning gear 604 to rotate accordingly, thereby driving the ratchet ring 605 to rotate. The ratchet ring 606 rotates on the threaded cylinder 605. Because the ratchet ring 606 rotates in the opposite direction, its inner ring spins freely. The ratchet ring 606 is threadedly connected to the threaded cylinder 605. Under the elastic extension of the elastic spiral ring plate 609, the ratchet ring 606 is driven upwards. With the cooperation of the fixed ring 611, it contacts the upper shell plate 603 and drives the upper cover plate 702 away from the material cylinder 3 along the distribution plate 701. At this time, material is added, and the ratchet ring 606... The upper part of the 6 has already contacted the upper shell plate 603, and then the threaded cylinder rod 605 drives the elastic spiral ring plate 609 to stir between the material cylinders 3. Due to the forward free rotation of the ratchet ring 606, the material in the material cylinder 3 is stirred and mixed. The material is turned and stirred from bottom to top by the elastic spiral ring plate 609 which is rotated in the opposite direction to ensure the uniformity of the stirring. The paddle plate 613 below the elastic spiral ring plate 609 stirs the material at the bottom of the material cylinder 3.
[0036] By using the reverse rotation of the ratchet ring 606, the elastic spiral ring plate 609 is driven to rotate in the opposite direction on the inner wall of the material cylinder 3, and the material is stirred from bottom to top. The bottom is stirred by the agitator plate 613, thereby mixing the material by the up-and-down tumbling and bottom stirring, thus improving the uniformity of the material mixing.
[0037] like Figure 6 , Figure 7 and Figure 9As shown, in this embodiment, a fixing plate 614 is fixedly connected below the elastic spiral ring plate 609. A lower sleeve 612 is fixedly connected below the fixing plate 614 near one end of the threaded cylinder rod 605 and is movably sleeved on the lower outer wall of the threaded cylinder rod 605. Several paddle plates 613 are fixedly connected to the outer wall of the lower sleeve 612 in a circumferentially even distribution. Through the lower sleeve 612 connected below the elastic spiral ring plate 609, the paddle plates 613 distributed on the outer wall are driven to rotate in the auxiliary disk 610, thereby stirring and mixing the material in the lower part of the material cylinder 3.
[0038] like Figure 4 , Figure 6 and Figure 8 As shown, in this embodiment, a positioning gear 604 is fixedly connected to the outer wall above the threaded cylinder 605. An auxiliary gear 607 is meshed with the outer wall of the positioning gear 604. A motor 608 is fixedly connected above the auxiliary gear 607. The motor 608 is fixedly installed on the inner wall of the upper shell plate 603. The motor 608 drives the auxiliary gear 607 to rotate, and the positioning gear 604 meshing with it rotates in the opposite direction, providing power for the rotation of the threaded cylinder 605.
[0039] like Figure 6 , Figure 8 , Figure 9 and Figure 10 As shown, in this embodiment, an auxiliary disk 610 is fixedly installed below the material cylinder 3. The auxiliary disk 610 is movably connected to several paddles 613. The paddles 613, which rotate around the threaded cylinder rod 605, rotate on the auxiliary disk 610 to agitate the material settled at the bottom of the material cylinder 3.
[0040] like Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 9 and Figure 10As shown, in this embodiment, the discharge assembly 7 includes an upper cover plate 702 fixedly installed on the outer ring of the ratchet ring 606. Limiting grooves 703 are provided on both sides of the upper cover plate 702. Two distribution plates 701 are symmetrically and evenly distributed and fixedly connected to the inner wall of the material cylinder 3. The distribution plates 701 are fixedly installed on the inner wall of the open ring plate 601. Several discharge grooves 705 are evenly distributed circumferentially on the concave surface of the auxiliary disk 610. Several check valve pipes 706 are evenly distributed and fixedly connected to the bottom wall of the discharge grooves 705 in a straight line. The motor 608 changes its rotation direction, driving the auxiliary gear 607 to rotate accordingly. The positioning gear 604, which meshes with the auxiliary gear 607, drives the threaded cylinder rod 605 to rotate forward. Because the ratchet ring 606 rotates forward, its inner and outer rings rotate synchronously and lock. Since the outer ring contacts the upper cover plate 702, and the limiting grooves 703 in the upper cover plate 702 interact with the distribution plates... The contact limit causes the ratchet ring 606 to move downwards on the outer wall of the forward-rotating threaded cylinder 605. The downward movement of the elastic spiral ring plate 609 drives the upper cover plate 702 into the material cylinder 3, which then moves downwards along the diverter plate, squeezing the fully stirred material in the material cylinder 3. After the material is squeezed downwards, the check valve pipe 706 in the discharge trough 705 is opened by the downward pressure, and the material is then guided into the discharge chute in the base 1 along the check valve pipe 706. During the downward movement of the lower cover plate, the elastic spiral ring plate 609 in the material cylinder 3 is squeezed, and the material is contracted in conjunction with the discharge. The material on the surface of the elastic spiral ring plate 609 is also squeezed off after contact with each other. The material on the inner wall of the material cylinder 3 is scraped downwards by the upper cover plate 702, which facilitates the cleaning and collection of the material adhering to the stirring structure and the inner wall of the material cylinder 3.
[0041] By rotating in the forward direction, the ratchet ring 606, under the forward locking engagement, moves downward on the outer wall of the threaded cylinder 605. At this time, the elastic spiral ring plate 609 stops rotating and drives the upper cover plate 702 to move downward in the material cylinder 3, squeezing the material. Under the downward pressure, the check valve pipe 706 is opened, and the material is discharged. During the downward movement of the upper cover plate 702, the material on the inner wall of the material cylinder 3 is scraped and cleaned and falls to the bottom. The material adhering to the surface of the elastic spiral ring plate 609 is squeezed and comes into contact with each other before falling to the bottom. Thus, the mixed material can be discharged by downward squeezing. During the squeezing process, the material on the inner wall of the material cylinder 3 and the surface of the stirring blades is cleaned, improving the efficiency of material discharge.
[0042] like Figure 6 , Figure 8 and Figure 10As shown, in this embodiment, a number of inclined ribs 704 are fixedly connected to the concave surface of the auxiliary disk 610 in a circumferentially evenly distributed manner. The inclined ribs 704 are movably connected to the lever plate 613. The inclined ribs 704 are located on the concave surface of the auxiliary disk 610. With the cooperation of the elastic spiral ring plate 609, after the lever plate 613 touches the inclined ribs 704, it presses the elastic spiral ring plate 609 upward. After it is separated from the elastic spiral ring plate 609, it returns to its original state, thereby changing the state of stirring during the rotation of the elastic spiral ring plate 609.
[0043] like Figure 1 , Figure 2 , Figure 3 and Figure 5 As shown, in this embodiment, a guide chute 707 is provided in the middle of the upper surface of the base 1. The bottom end of the threaded cylinder rod 605 is movably installed on the bottom of the inner wall of the guide chute 707. A discharge frame 4 is fixedly installed through the base 1 on one side of the guide chute 707. Two support rods 5 are symmetrically and evenly distributed and fixedly connected to the side of the discharge frame 4 near the base 1. The other ends of the two support rods 5 are fixedly installed at the front end of the base 1. After the material enters the guide chute 707, it enters the discharge frame 4 along its slope and is then discharged for further processing. A control panel 8 is fixedly connected above the front end of the base 1. Control buttons 9 are fixedly connected to both sides of the surface of the control panel 8. The control panel 8 is adjusted by the control buttons 9 to control the operation of the overall structure.
[0044] The working principle of this application is as follows: the staff guides the material through the space between the upper cover plate 702 and the open ring plate 601 and it falls into the material cylinder 3. After the material is introduced, the control buttons 9 on both sides of the control panel 8 are used to start the equipment to work.
[0045] Stirring: The motor 608 located in the upper shell plate 603 is started. The rotation of the motor 608 drives the auxiliary gear 607 to rotate, and the positioning gear 604 meshing with it rotates in the opposite direction, causing the threaded cylinder 605 in the middle of the positioning gear 604 to rotate as well. This drives the ratchet ring 606 to rotate on the threaded cylinder 605. Because the ratchet ring 606 rotates in the opposite direction, its inner ring spins freely. The ratchet ring 606 is threadedly connected to the threaded cylinder 605. Under the elastic extension of the elastic spiral ring plate 609, the ratchet ring 606 is driven to move upward. With the cooperation of the fixing ring 611, it moves with the upper shell plate. 603 makes contact and drives the upper cover plate 702 away from the material cylinder 3 along the material distribution plate 701. At this time, material is added and the ratchet ring 606 is in contact with the upper shell plate 603. Then, the threaded cylinder rod 605 drives the elastic spiral ring plate 609 to stir between the material cylinders 3. Due to the forward rotation of the ratchet ring 606, the material in the material cylinder 3 is stirred and mixed. The material is turned and stirred from bottom to top by the elastic spiral ring plate 609 which is rotated in the opposite direction to ensure the uniformity of the stirring. The paddle plate 613 below the elastic spiral ring plate 609 stirs the material at the bottom of the material cylinder 3.
[0046] Extrusion discharge: After the material mixing is completed, the starting motor 608 changes its rotation direction, driving the auxiliary gear 607 to rotate accordingly. The positioning gear 604, which meshes with the auxiliary gear, drives the threaded cylinder 605 to rotate forward. Because the ratchet ring 606 rotates forward, its inner and outer rings rotate synchronously and lock. Since the outer ring contacts the upper cover plate 702, and the limiting groove 703 in the upper cover plate 702 contacts and limits the movement of the flow divider plate, the ratchet ring 606 is displaced on the outer wall of the forward-rotating threaded cylinder 605 and moves downwards. The elastic spiral ring plate 609 moves downwards, driving the upper cover plate 702 into the material cylinder 3, and then along the flow divider plate... The material is squeezed and pressed in the cylinder 3 after being fully mixed. After the material is squeezed downward, the check valve 706 in the discharge trough 705 is opened by the downward pressure. Then the material is guided into the discharge chute in the base 1 through the check valve 706. During the downward movement of the lower cover plate, the elastic spiral ring plate 609 in the cylinder 3 is squeezed and contracted in conjunction with the discharge of the material. The material on the surface of the elastic spiral ring plate 609 is also squeezed and detached after contact with each other. The material on the inner wall of the cylinder 3 is scraped downward by the upper cover plate 702, so as to facilitate the cleaning and collection of the material adhering to the mixing structure and the inner wall of the cylinder 3.
[0047] Auxiliary stirring: During the stirring process, the threaded cylinder 605 will drive the elastic spiral ring plate 609 to rotate, while the inclined rib plate 704 is located on the upper concave surface of the auxiliary disk 610. With the cooperation of the elastic spiral ring plate 609, after the paddle plate 613 touches the inclined rib plate 704, it presses the elastic spiral ring plate 609 upward. After it is separated from the rib plate 704, the elastic spiral ring plate 609 returns to its original state, thereby changing the state of stirring during the rotation of the elastic spiral ring plate 609.
[0048] Discharge: After being squeezed and discharged through the check valve pipe 706, the material falls into the discharge chute in the base 1 and enters the discharge frame 4 along its slope, thus realizing the discharge of the material.
[0049] The basic principles, main features, and advantages of this application have been described above. Those skilled in the art should understand that this application is not limited to the above embodiments. The embodiments and descriptions in the specification are merely the principles of this application. Various changes and modifications can be made to this application without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection claimed by this application is defined by the appended claims and their equivalents.
Claims
1. A mixing device for preparing PVC heat-shrinkable film, comprising a base (1), an mounting plate (2) fixedly mounted above the base (1), and a material cylinder (3) provided above the mounting plate (2), characterized in that, The inner wall of the material cylinder (3) is provided with a stirring assembly (6). The stirring assembly (6) includes an open ring plate (601) fixedly installed above the material cylinder (3). Several side rods (602) are symmetrically and evenly distributed and fixedly connected above the inner wall of the open ring plate (601). An upper shell plate (603) is fixedly connected above the several side rods (602). A threaded cylinder rod (605) is movably installed on the inner wall of the upper shell plate (603). A ratchet ring (606) is threadedly connected through the upper shell plate (603) below the threaded cylinder rod (605). A fixing ring (611) is fixedly connected below the inner ring of the ratchet ring (606). An elastic spiral ring plate (609) is fixedly connected below the fixing ring (611). A discharge assembly (7) is provided on the outer wall of the ratchet ring (606).
2. The mixing apparatus for preparing PVC heat-shrinkable film as described in claim 1, characterized in that, A fixing plate (614) is fixedly connected below the elastic spiral ring plate (609). A lower sleeve (612) is fixedly connected below the fixing plate (614) near the end of the threaded cylinder (605) and is movably sleeved on the lower part of the outer wall of the threaded cylinder (605). Several levers (613) are fixedly connected to the outer wall of the lower sleeve (612) in a circumferentially even distribution.
3. The mixing device for preparing PVC heat-shrinkable film as described in claim 2, characterized in that, A positioning gear (604) is fixedly connected to the outer wall above the threaded cylinder (605), and an auxiliary gear (607) is meshed with the outer wall of the positioning gear (604).
4. The mixing device for preparing PVC heat-shrinkable film as described in claim 3, characterized in that, A motor (608) is fixedly connected above the auxiliary gear (607), and the motor (608) is fixedly installed above the inner wall of the upper shell plate (603).
5. The mixing device for preparing PVC heat-shrinkable film as described in claim 2, characterized in that, An auxiliary disk (610) is fixedly installed below the material cylinder (3), and the auxiliary disk (610) is movably connected to several of the dial plates (613).
6. The mixing apparatus for preparing PVC heat-shrinkable film as described in claim 5, characterized in that, The discharge assembly (7) includes an upper cover plate (702) fixedly installed on the outer ring of the ratchet ring (606). The upper cover plate (702) has a limiting groove (703) on both sides of its surface. The inner wall of the material cylinder (3) is symmetrically and evenly distributed with two material distribution plates (701). The material distribution plates (701) are fixedly installed on the inner wall of the open ring plate (601) above them. The upper concave surface of the auxiliary disk (610) is provided with several discharge grooves (705) evenly distributed around the circumference. The bottom wall of the discharge groove (705) is fixedly connected with several check valve pipes (706) evenly distributed in a straight line.
7. The mixing apparatus for preparing PVC heat-shrinkable film as described in claim 6, characterized in that, The auxiliary disk (610) has a number of inclined ribs (704) that are evenly distributed around its concave surface and are fixedly connected to it. The inclined ribs (704) are movably connected to the lever plate (613).
8. The mixing apparatus for preparing PVC heat-shrinkable film as described in claim 1, characterized in that, The base (1) has a guide groove (707) in the middle of its upper surface, and the bottom end of the threaded cylinder (605) is movably installed on the bottom of the inner wall of the guide groove (707).
9. The mixing apparatus for preparing PVC heat-shrinkable film as described in claim 8, characterized in that, The material guide chute (707) has a discharge frame (4) fixedly installed through the base (1) on one side. The discharge frame (4) has two support rods (5) fixedly connected in a symmetrical and evenly distributed manner on the side near the base (1). The other end of the two support rods (5) is fixedly installed at the front end of the base (1).
10. The mixing apparatus for preparing PVC heat-shrinkable film as described in claim 3, characterized in that, A control panel (8) is fixedly connected to the upper front end of the base (1), and control buttons (9) are fixedly connected to both sides of the surface of the control panel (8).