Kneading machine for plastic film processing

Abstract

The utility model provides a kneader for plastic film processing, which comprises a closed box body and a support arranged at the bottom of the box body, the box body comprises a cylindrical shell and end sealing plates arranged at two ends of the shell, the cylindrical shell and the end sealing plates are rotationally connected with each other, and two kneader bodies are arranged in the shell side by side. Protruding shearing parts corresponding to the shapes of the paddles are arranged on the inner wall of the shell, a driving assembly is further arranged outside the shell, and then the whole shell is driven to rotate along the axis. The driving assembly can drive the shell to rotate automatically. Meanwhile, the rotating shafts of the kneading device rotate at a differential speed, so that the paddles on the two rotating shafts rotate at a differential speed in the shell, and shearing force is formed between the paddles. And the rotating blades and the shearing part on the inner wall of the shell also have a differential rotation effect, and materials positioned in an area between the inner wall of the shell and the kneading device also can be sheared and stirred, so that the mixing and shearing efficiency is greatly improved compared with the traditional equipment which can only be sheared between the blades.

Description

Technical Field

[0001] The utility model relates to the technical field of plastic film production, in particular to a kneading machine for plastic film processing. Background Art

[0002] Plastic films made of polyvinyl chloride, polyethylene, polypropylene, polystyrene and other resins are used for packaging and as coating layers. They are widely used in food, medicine, chemical industry, industrial profiles and other fields, bringing great convenience to people's lives. For example, plastic films are also widely used in waterproof materials. In the production process of waterproof rolls, plastic films are first used as the base layer, and then waterproof materials are laid on top, and finally shaped into a roll structure.

[0003] When producing plastic film, it usually goes through the steps of raw material mixing, kneading, extrusion blow molding, PVC glass paper base film, coating, slitting, inspection, packaging, etc. Kneading is the step of evenly mixing different plastic particle raw materials after hot melting to form the required homogenized plastic product, which is usually carried out using a kneader. Kneading machine is a special mixing and stirring equipment. The most commonly used one is to use two Σ blades, arranged in a side-by-side tangential differential speed type, that is, one stirring paddle has a fast speed and the other has a slow speed, so as to generate shear force. Different paddle speeds enable the mixed materials to be sheared quickly, so that the materials can be mixed evenly.

[0004] The kneading machines currently used usually use stirring paddles of various shapes to produce differential speeds when they rotate to achieve shear mixing functions. However, in this method, the material can only achieve the shear effect when passing through the area between the two stirring paddles, while the area on the outside close to the inner wall where a large amount of material exists cannot show the shear mixing function, resulting in limited mixing efficiency. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a kneading machine for processing plastic film, which solves the problem in the prior art that the shearing effect can be achieved only when the material passes through the area between two stirring paddles, resulting in low mixing efficiency.

[0006] According to an embodiment of the utility model, a kneading machine for processing plastic film comprises a closed box body and a bracket arranged at the bottom of the box body, the box body comprises a cylindrical outer shell and end plates arranged at both ends of the outer shell, the end plates and the outer shell are closed and rotatably connected, wherein the end plates are fixedly connected to the bracket, and the outer shell is rotatably installed between two opposite end plates, two kneaders are arranged side by side inside the outer shell, the kneaders comprise a rotating shaft and paddles arranged on the rotating shaft, the rotating shaft is arranged parallel to the axis of the outer shell, and both ends of the rotating shaft are rotatably connected to the end plates, one end of the rotating shaft passes through the outside of the end plate and is connected to a control motor, the paddles are in the same plane, and are reciprocated and staggered on the rotating shaft in an arc shape, a protruding shearing portion is arranged on the inner wall of the outer shell corresponding to the shape of the paddles, and a driving component is also arranged on the outside of the outer shell to drive the outer shell as a whole to rotate along the axis.

[0007] Furthermore, a protruding sealing section is provided on the opposite side of the end sealing plate, and the outer diameter of the sealing section matches the inner diameter of the outer shell, so that the sealing section is just embedded in the end of the outer shell.

[0008] Furthermore, a rotating bearing is sleeved on the outer edge of the sealing section, and the outer side of the rotating bearing is connected to the inner wall of the edge of the outer shell, so as to realize the rotating sealing connection between the outer shell and the end plate.

[0009] Furthermore, the driving assembly includes a ring gear coaxially sleeved on the outside of the shell and a driving motor arranged on the bracket, the output shaft of the driving motor is parallel to the axis of the shell, and a driving gear is provided on the output shaft of the driving motor, and the driving gear is meshed with the ring gear.

[0010] Furthermore, the shell is provided with an opening, and a sealing door is provided corresponding to the opening. The sealing door is rotatably connected to a position of the shell corresponding to the opening edge, so that the sealing door can be rotated outward to open.

[0011] Furthermore, the shearing portion includes a plurality of shearing plates, which are parallel to the axis of the shell and are circumferentially arranged on the inner wall of the shell, so that the shearing plates are perpendicular to the inner wall of the shell and radially face the axis of the shell.

[0012] Furthermore, a recessed portion is provided on the shear plate at an arc-shaped protruding portion corresponding to the blade, so that the edge of the blade just passes through the recessed portion.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] The box body in the utility model includes a cylindrical outer shell and end plates arranged at both ends of the outer shell, and the end plates are connected to the outer shell in a closed rotational manner. Therefore, when the end plates are fixed, the outer shell can be driven to rotate by itself through the driving assembly. At the same time, the two control motors also drive the rotating shafts of the two kneaders to rotate differentially, so that the blades on the two rotating shafts rotate differentially in the outer shell, forming shear forces between each other. Then the rotating blades and the shearing part of the inner wall of the outer shell also have the effect of differential rotation, and the material in the area between the inner wall of the outer shell and the kneader can also be sheared and stirred. Compared with traditional equipment that can only be sheared between the blades, the efficiency of mixing and shearing is greatly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a side schematic diagram of the internal structure of an embodiment of the utility model.

[0016] Figure 2 Schematic diagram of a shear plate in an embodiment of the utility model.

[0017] In the above drawings: 1, housing; 2, end plate; 3, bracket; 4, kneader; 5, shear plate; 6, drive motor; 7, drive gear; 11, sealing door; 12, ring gear; 13, handle; 21, sealing section; 22, rotating bearing; 31, bottom plate; 32, support rod; 41, control motor; 42, rotating shaft; 43, paddle; 51, recessed portion. DETAILED DESCRIPTION

[0018] The technical solution of the present utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0019] like Figure 1 As shown, the embodiment of the utility model provides a kneading machine for plastic film processing, including a closed box and a bracket 3 arranged at the bottom of the box. In this embodiment, the box as a whole is a horizontally placed cylindrical structure, and the bracket 3 includes a horizontal bottom plate 31 and two vertical support rods 32 arranged on the bottom plate 31, which are used to cooperate with the box.

[0020] In a specific solution, the box body includes a cylindrical shell 1 and end plates 2 arranged at both ends of the shell 1, and the end plates 2 are connected to the shell 1 in a closed rotational manner, wherein the bottom end of the end plates 2 is fixedly connected to the support rod 32, and the shell 1 is rotatably installed between the two opposite end plates 2. In this embodiment, a protruding sealing section 21 is provided on the opposite side of the end plates 2, and the sealing section 21 is a cylindrical structure. The outer diameter of the sealing section 21 matches the inner diameter of the shell 1, so that the sealing section 21 is just embedded in the end of the shell 1. Preferably, a rotating bearing 22 is sleeved on the outer edge of the sealing section 21, and the outer side of the rotating bearing 22 is connected to the inner wall of the edge of the shell 1 to realize the rotating sealing connection between the shell 1 and the end plates 2. Furthermore, an opening is also provided on the shell 1, and a sealing door 11 is correspondingly provided at the opening, and a handle 13 is provided on the sealing door 11, and the sealing door 11 is rotatably connected to the position of the corresponding opening edge of the shell 1, so that the sealing door 11 can be rotated outward to open. When the housing 1 is rotated so that the sealing door 11 is located at the top, the sealing door 11 can be opened to feed the materials; when the kneading work is completed, the sealing door 11 is rotated to the bottom and opened to discharge the materials.

[0021] Two kneaders 4 are arranged side by side inside the shell 1, and the kneaders 4 include a rotating shaft 42 and a paddle 43 arranged on the rotating shaft 42. The rotating shaft 42 is arranged parallel to the axis of the shell 1, and both ends of the rotating shaft 42 are rotatably connected to the end plate 2. One end of the rotating shaft 42 passes through the outside of the end plate 2 and is connected to the control motor 41. The paddles 43 are in the same plane and are reciprocated and staggered on the rotating shaft 42 in an arc shape. It should be noted that because the end plate 2 is arranged vertically, the control motor 41 is fixedly arranged on the outer wall of the end plate 2 facing away from the shell 1, and at the same time, both ends of the rotating shaft 42 are evenly rotatably connected to the end plate 2 to achieve differential speed control of the paddles 43.

[0022] like Figure 2 As shown, in this embodiment, a protruding shearing portion is provided on the inner wall of the housing 1 corresponding to the shape of the blade 43. The shearing portion includes a plurality of shearing plates 5, which are parallel to the axis of the housing 1 and are circumferentially arranged on the inner wall of the housing 1, so that the shearing plates 5 are perpendicular to the inner wall of the housing 1 and radially face the axis of the housing 1. In this embodiment, a total of six shearing plates 5 are arranged circumferentially at equal intervals, and a recessed portion 51 is provided on the shearing plate 5 corresponding to the arc-shaped protruding portion of the blade 43, so that the edge of the blade 43 just passes through the recessed portion 51. Therefore, when the protruding portion on the blade 43 passes tangentially with the recessed portion 51, a shearing force will also be formed, thereby exerting a shear mixing effect on the material located therebetween.

[0023] A driving assembly is also provided outside the housing 1, which drives the housing 1 to rotate along the axis as a whole. The driving assembly includes a ring gear 12 coaxially sleeved outside the housing 1 and a driving motor 6 provided on the bracket 3. The output shaft of the driving motor 6 is parallel to the axis of the housing 1, and a driving gear 7 is provided on the output shaft of the driving motor 6, and the driving gear 7 is meshed with the ring gear 12. When the driving motor 6 is working, the ring gear 12 is driven to rotate through the driving gear 7, thereby driving the housing 1 to rotate as a whole, that is, driving the rotation of the shear plate 5. The housing 1 and the two groups of kneaders 4 are made to rotate independently, and differential speeds are formed in turn to achieve the shearing function.

[0024] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A kneading machine for plastic film processing, characterized in that: The invention comprises a closed box body and a bracket arranged at the bottom of the box body, wherein the box body comprises a cylindrical shell and end plates arranged at both ends of the shell, wherein the end plates are closed and rotatably connected with the shell, wherein the end plates are fixedly connected with the bracket, and the shell is rotatably installed between two opposite end plates, and two kneaders are arranged in parallel inside the shell, wherein the kneaders comprise a rotating shaft and paddles arranged on the rotating shaft, wherein the rotating shaft is arranged parallel to the axis of the shell, and both ends of the rotating shaft are rotatably connected to the end plates, one end of the rotating shaft passes through the outside of the end plates and is connected to a control motor, the paddles are in the same plane, and are reciprocated and staggered around the rotating shaft in an arc shape, and a protruding shearing portion corresponding to the shape of the paddles is arranged on the inner wall of the shell, and a driving component is also arranged outside the shell to drive the shell as a whole to rotate along the axis.

2. A kneading machine for plastic film processing as claimed in claim 1, characterized in that: A protruding sealing section is arranged on the opposite side of the end sealing plate, and the outer diameter of the sealing section matches the inner diameter of the outer shell, so that the sealing section is just embedded in the end of the outer shell.

3. A kneading machine for plastic film processing as claimed in claim 2, characterized in that: The outer edge of the sealing section is sleeved with a rotating bearing, and the outer side of the rotating bearing is connected to the inner wall of the edge of the shell, so as to realize the rotating sealing connection between the shell and the end plate.

4. A kneading machine for plastic film processing as claimed in claim 1, characterized in that: The driving assembly includes a ring gear coaxially sleeved on the outside of the shell and a driving motor arranged on a bracket, the output shaft of the driving motor is parallel to the axis of the shell, and a driving gear is arranged on the output shaft of the driving motor, and the driving gear is meshed with the ring gear.

5. A kneading machine for plastic film processing as claimed in claim 1, characterized in that: The shell is also provided with an opening, and a sealing door is correspondingly provided at the opening. The sealing door is rotatably connected to a position of the shell corresponding to the opening edge, so that the sealing door can be rotated outward to open.

6. A kneading machine for plastic film processing as claimed in claim 1, characterized in that: The shearing portion includes a plurality of shearing plates, which are parallel to the axis of the shell and are circumferentially arranged on the inner wall of the shell, so that the shearing plates are perpendicular to the inner wall of the shell and radially face the axis of the shell.

7. A kneading machine for plastic film processing as claimed in claim 6, characterized in that: A recessed portion is provided on the shear plate corresponding to the arc-shaped protruding portion of the blade, so that the edge of the blade just passes through the recessed portion.

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