Convenient-to-feed double-screw extruder for plastic film production

Abstract

The utility model discloses a convenient-to-feed double-screw extruder for plastic film production, and relates to the technical field of plastic processing. The bottom end of the outer bin is fixedly connected with the top end of the base; the outer wall of the driving motor is fixedly connected with the outer wall of the base; the outer wall of the screw rod is in sliding connection with the inner wall of the outer bin; through the arrangement of the feeding mechanism and the two alternately-arranged stirring plates, when raw materials fall on the stirring plates, the stirring plates are continuously rotated and reset under the support of metal elastic pieces, so that the raw materials are shaken and become loose, the raw materials become loose and are prevented from being hardened through the two stirring plates, and the raw materials are prevented from being hardened through the vibration of a filter disc. The plastic raw materials are screened, impurities mixed in the raw materials are separated out, the plastic materials can penetrate through the filtering disc to fall into the outer bin, the purity of the plastic materials is greatly improved, and the impurity content is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of plastic processing, in particular to a twin-screw extruder for producing plastic films which is convenient for feeding. Background Art

[0002] Twin-screw extruder is developed on the basis of single-screw extruder. It has been widely used in the molding of extruded products due to its good feeding performance, mixing and plasticizing performance, exhaust performance, extrusion stability and other characteristics.

[0003] However, in the prior art, when producing plastic film, the plastic original parts need to be processed by a twin-screw extruder. However, some impurities such as metal debris may be mixed in the feeding process, which will not only affect the quality of the plastic processed by the twin-screw extruder, but also affect the twin screws, reducing their service life. After a long time, the screws need to be disassembled, cleaned and repaired. The existing screw installation method is relatively cumbersome and time-consuming and labor-intensive to disassemble. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model adopts the following technical solution to solve the technical problems: a twin-screw extruder for producing plastic films that is easy to feed, comprising: a base; an outer bin, the bottom end of the outer bin is fixedly connected to the top end of the base; a driving motor, the outer wall of the driving motor is fixedly connected to the outer wall of the base; a screw, the outer wall of the screw is slidably connected to the inner wall of the outer bin; a feeding mechanism, the bottom end of the feeding mechanism is fixedly connected to the top end of the outer bin; a connecting mechanism, the outer wall of the connecting mechanism is fixedly connected to the output end of the driving motor; the feeding mechanism comprises a feeding shell, the inner wall of the feeding shell is rotatably connected with a toggle plate at both ends, the bottom end of the toggle plate is fixedly connected with a metal spring, the outer wall of the feeding shell is provided with a discharge port, a filter disc is arranged inside the feeding shell, the outer wall of the filter disc is fixedly connected with sliding rods at the four corners, the outer wall of the filter disc is fixedly connected with a push spring, and the outer walls of both ends of the filter disc are fixedly connected with bellows.

[0005] Preferably, the bottom end of the feed shell is fixedly connected to the outer wall of the outer bin, and the outer wall of the metal spring is fixedly connected to the inner wall of the feed shell. When the raw material falls on the toggle plate, the metal spring is pressed downward by gravity, and the toggle plate is continuously rotated and reset under the support of the metal spring, thereby shaking the raw material.

[0006] Preferably, the outer wall of the slide rod is slidably connected to the inner wall of the feed shell, the end of the push spring away from the filter disc is fixedly connected to the inner wall of the feed shell, and the end of the bellows away from the filter disc is fixedly connected to the inner wall of the feed shell. The filter disc moves in the feed shell through the slide rod, and the filter disc vibrates through the action of the push spring, thereby screening the plastic raw materials.

[0007] Preferably, the connection mechanism comprises a fixed cylinder, the inner wall of the fixed cylinder is slidably connected with a slide cylinder, the inner wall of the slide cylinder is provided with a positioning groove, blocks are slidably connected with the inner walls of the fixed cylinder at both ends, the bottom end of the inner wall of the fixed cylinder is rotatably connected with a turning handle, the bottom end of the turning handle is fixedly connected with a torsion spring, and the outer wall of the block is fixedly connected with a push rod. The outer wall of the slide cylinder is fixedly connected with the outer wall of the screw, the outer wall of the fixed cylinder is fixedly connected with the output end of the driving motor, and the outer wall of the block is slidably connected with the inner wall of the positioning groove. The slide cylinder enters the fixed cylinder, and the push rod is pressed at this time, so that it pushes the fixedly connected block to slide on the inner wall of the slide cylinder, and through the connection of the turning handle, the block at the other end is driven to move together, so that the slide cylinder completely enters the fixed cylinder.

[0008] Preferably, the outer wall of the rotating handle is rotatably connected to the outer wall of the clamping block, the end of the torsion spring away from the rotating handle is fixedly connected to the inner wall of the fixed cylinder, and the outer wall of the push rod is slidably connected to the inner wall of the fixed cylinder. Under the action of the torsion spring, the rotating handle is rotated to reset, and the clamping blocks at both ends are pushed to move again and clamped into the positioning grooves, so that the connection between the fixed cylinder and the sliding cylinder cannot be loosened.

[0009] The beneficial effects of the utility model are as follows:

[0010] 1. The utility model provides a connecting mechanism to fix the screw and the slide cylinder, and to fix the fixed cylinder and the output end of the driving motor, so that the slide cylinder enters the fixed cylinder. Under the action of the torsion spring, the turning handle is rotated to reset, and the clamping blocks at both ends are pushed to move again and are clamped in the positioning groove, so that the connection between the fixed cylinder and the slide cylinder cannot be loosened, so that the fixed cylinder is driven to rotate by the driving motor, and the screw is rotated through the connection of the slide cylinder. The operation is simple and the screw can be quickly installed and disassembled.

[0011] 2. The utility model sets a feeding mechanism and two alternately arranged toggle plates. When the raw material falls on the toggle plate, the toggle plate is supported by a metal spring sheet to continuously rotate and reset, thereby shaking the raw material to make it loose. The two toggle plates make the raw material looser to prevent it from being compacted. The vibration of the filter disc can screen the plastic raw material, so that impurities mixed in the raw material are separated, and the plastic material passes through the filter disc and falls into the outer bin, which greatly improves the purity of the plastic material and reduces the impurity content. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is the front view of the utility model;

[0013] Figure 2 It is a cross-sectional view of the utility model;

[0014] Figure 3 It is a structural schematic diagram of the connection mechanism of the utility model;

[0015] Figure 4 It is a structural schematic diagram of the feeding mechanism of the utility model.

[0016] In the figure: 1. base; 2. drive motor; 3. outer bin; 4. feed mechanism; 41. feed shell; 42. toggle plate; 43. metal spring; 44. filter plate; 45. slide rod; 46. push spring; 47. bellows; 48. discharge port; 5. screw; 6. connecting mechanism; 61. fixed cylinder; 62. slide cylinder; 63. positioning groove; 64. block; 65. handle; 66. torsion spring; 67. push rod. DETAILED DESCRIPTION

[0017] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations are obvious to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and design various embodiments with various modifications suitable for specific purposes.

[0018] Example:

[0019] See also Figure 1 - Figure 4 The utility model provides a technical solution: a twin-screw extruder for producing plastic films that is easy to feed, comprising: a base 1; an outer bin 3, the bottom end of the outer bin 3 is fixedly connected to the top end of the base 1; a driving motor 2, the outer wall of the driving motor 2 is fixedly connected to the outer wall of the base 1; a screw 5, the outer wall of the screw 5 is slidably connected to the inner wall of the outer bin 3; a feeding mechanism 4, the bottom end of the feeding mechanism 4 is fixedly connected to the top end of the outer bin 3; a connecting mechanism 6, the outer wall of the connecting mechanism 6 is fixedly connected to the output end of the driving motor 2; the feeding mechanism 4 comprises a feeding shell 41, the inner wall of the feeding shell 41 is rotatably connected with a toggle plate 42 at both ends, the bottom end of the toggle plate 42 is fixedly connected with a metal spring 43, the outer wall of the feeding shell 41 is provided with a discharge port 48, a filter disc 44 is arranged inside the feeding shell 41, the outer wall of the filter disc 44 is fixedly connected with slide rods 45 at the four corners, the outer wall of the filter disc 44 is fixedly connected with a push spring 46, and the outer walls of the two ends of the filter disc 44 are fixedly connected with bellows 47.

[0020] The bottom end of the feed shell 41 is fixedly connected to the outer wall of the outer bin 3, and the outer wall of the metal spring 43 is fixedly connected to the inner wall of the feed shell 41. The raw material falls on the toggle plate 42, and under the action of gravity, it presses the fixedly connected metal spring 43 downward, and supported by the metal spring 43, the toggle plate 42 is continuously rotated and reset, thereby shaking the raw material.

[0021] The outer wall of the slide bar 45 is slidably connected to the inner wall of the feed shell 41, the end of the push spring 46 away from the filter disc 44 is fixedly connected to the inner wall of the feed shell 41, and the end of the bellows 47 away from the filter disc 44 is fixedly connected to the inner wall of the feed shell 41. The filter disc 44 moves on the inner wall of the feed shell 41 through the fixedly connected slide bar 45, and the filter disc 44 vibrates through the action of the fixedly connected push spring 46, thereby screening the plastic raw materials.

[0022] The connecting mechanism 6 comprises a fixed cylinder 61, the inner wall of which is slidably connected with a slide cylinder 62, the inner wall of which is provided with a positioning groove 63, the inner ends of which are slidably connected with blocks 64, the bottom end of the inner wall of which is rotatably connected with a turning handle 65, the bottom end of which is fixedly connected with a torsion spring 66, and the outer wall of which is fixedly connected with a push rod 67. The outer wall of the slide cylinder 62 is fixedly connected with the outer wall of the screw rod 5, the outer wall of the fixed cylinder 61 is fixedly connected with the output end of the driving motor 2, and the outer wall of the block 64 is slidably connected with the inner wall of the positioning groove 63. When the slide cylinder 62 enters the inner wall of the fixed cylinder 61, the push rod 67 is pressed to push the fixedly connected block 64 to slide on the inner wall of the slide cylinder 62, and the block 64 at the other end is driven to move together through the connection of the rotatingly connected turning handle 65, when the slide cylinder 62 completely enters the fixed cylinder 61.

[0023] The outer wall of the rotating handle 65 is rotatably connected to the outer wall of the clamping block 64, the end of the torsion spring 66 away from the rotating handle 65 is fixedly connected to the inner wall of the fixed cylinder 61, and the outer wall of the push rod 67 is slidably connected to the inner wall of the fixed cylinder 61. Under the action of the torsion spring 66, the rotating handle 65 that is fixedly connected is rotated and reset, and the clamping block 64 that is rotatably connected at both ends is pushed to move again and be clamped into the inner wall of the positioning groove 63, so that the connection between the fixed cylinder 61 and the sliding cylinder 62 cannot be loosened.

[0024] Working principle:

[0025] When in use, the screw rod 5 and the slide cylinder 62 are fixedly connected through the connecting mechanism 6, the fixed cylinder 61 and the output end of the driving motor 2 are fixedly connected, and the screw rod 5 connecting the slide cylinder 62 is installed in the outer bin 3 on the base 1, so that the slide cylinder 62 enters the fixed cylinder 61. At this time, the push rod 67 is pressed to push the fixedly connected block 64 to slide on the inner wall of the slide cylinder 62, and through the connection of the turning handle 65, the block 64 at the other end is also driven to move together. When the slide cylinder 62 completely enters the fixed cylinder 61, the push rod 67 is released, and under the action of the torsion spring 66, the turning handle 65 is rotated and reset, and the blocks 64 at both ends are pushed to move again and are stuck in the positioning groove 63, so that the connection between the fixed cylinder 61 and the slide cylinder 62 cannot be loosened, thereby driving the fixed cylinder 61 to rotate through the driving motor 2, and the screw rod 5 is rotated on the inner wall of the outer bin 3 through the connection of the slide cylinder 62;

[0026] When the screw 5 rotates to start feeding, the plastic raw material is put into the feed shell 41 through the feed mechanism 4, and the raw material falls on the toggle plate 42. Under the action of gravity, the metal spring 43 is squeezed downward. Supported by the metal spring 43, the toggle plate 42 is continuously rotated and reset, thereby shaking the raw material to make it loose. The two toggle plates 42 make the raw material looser and fall into the filter disc 44 at the lower end. Under the influence of gravity, the filter disc 44 moves in the feed shell 41 through the slide rod 45, and the filter disc 44 vibrates through the push spring 46, thereby screening the plastic raw material and separating the impurities mixed in the raw material. As the filter disc 44 vibrates, the impurities enter the bellows 47 and are discharged from the feed shell 41 through the discharge port 48, while the plastic material passes through the filter disc 44 and falls into the outer bin 3, and is processed by the rotating screw 5.

[0027] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field and related fields without creative work should fall within the scope of protection of the present invention. Structures, devices and operating methods not specifically described and explained in the present invention shall be implemented according to conventional means in the field unless otherwise specified and limited.

Claims

1. A twin-screw extruder for producing plastic film which is convenient for feeding, characterized in that: include: Base (1); An outer bin (3), the bottom end of the outer bin (3) being fixedly connected to the top end of the base (1); A driving motor (2), wherein an outer wall of the driving motor (2) is fixedly connected to an outer wall of the base (1); A screw rod (5), wherein the outer wall of the screw rod (5) is slidably connected to the inner wall of the outer bin (3); A feeding mechanism (4), wherein the bottom end of the feeding mechanism (4) is fixedly connected to the top end of the outer bin (3); A connecting mechanism (6), wherein an outer wall of the connecting mechanism (6) is fixedly connected to an output end of the driving motor (2); The feeding mechanism (4) comprises a feeding shell (41), the two ends of the inner wall of the feeding shell (41) are rotatably connected to a toggle plate (42), the bottom end of the toggle plate (42) is fixedly connected to a metal spring (43), the outer wall of the feeding shell (41) is provided with a discharge port (48), a filter disc (44) is arranged inside the feeding shell (41), the four corners of the outer wall of the filter disc (44) are fixedly connected to slide rods (45), the outer wall of the filter disc (44) is fixedly connected to a push spring (46), and the outer walls of both ends of the filter disc (44) are fixedly connected to bellows (47); The connecting mechanism (6) comprises a fixed cylinder (61), the inner wall of the fixed cylinder (61) is slidably connected to a sliding cylinder (62), the inner wall of the sliding cylinder (62) is provided with a positioning groove (63), both ends of the inner wall of the fixed cylinder (61) are slidably connected to clamping blocks (64), the bottom end of the inner wall of the fixed cylinder (61) is rotatably connected to a rotating handle (65), the bottom end of the rotating handle (65) is fixedly connected to a torsion spring (66), and the outer wall of the clamping block (64) is fixedly connected to a push rod (67).

2. A twin-screw extruder for producing plastic film that is easy to feed according to claim 1, characterized in that: The bottom end of the feed shell (41) is fixedly connected to the outer wall of the outer bin (3), and the outer wall of the metal spring sheet (43) is fixedly connected to the inner wall of the feed shell (41).

3. A twin-screw extruder for producing plastic film that is easy to feed according to claim 2, characterized in that: The outer wall of the sliding rod (45) is slidably connected to the inner wall of the feed shell (41), one end of the push spring (46) away from the filter disc (44) is fixedly connected to the inner wall of the feed shell (41), and one end of the bellows (47) away from the filter disc (44) is fixedly connected to the inner wall of the feed shell (41).

4. A twin-screw extruder for producing plastic film that is easy to feed according to claim 1, characterized in that: The outer wall of the sliding cylinder (62) is fixedly connected to the outer wall of the screw rod (5), the outer wall of the fixed cylinder (61) is fixedly connected to the output end of the drive motor (2), and the outer wall of the clamping block (64) is slidably connected to the inner wall of the positioning groove (63).

5. A twin-screw extruder for producing plastic film that is easy to feed according to claim 4, characterized in that: The outer wall of the rotating handle (65) is rotatably connected to the outer wall of the clamping block (64), one end of the torsion spring (66) away from the rotating handle (65) is fixedly connected to the inner wall of the fixed cylinder (61), and the outer wall of the push rod (67) is slidably connected to the inner wall of the fixed cylinder (61).

Images