Feeding device of double-screw extruder

Abstract

The utility model relates to the technical field of double-screw extruders, in particular to a feeding device of a double-screw extruder, which comprises a feeding hopper and further comprises a flow guide plate fixed on the inner wall of the feeding hopper and used for guiding materials, a magnetic plate for adsorbing metal substances in the materials is arranged at the top of the flow guide plate, and the magnetic plate is fixed on the inner wall of the feeding hopper. A push plate for scraping metal substances is arranged at the top of the magnetic plate, and a driving mechanism for driving the push plate to move is arranged in the feeding hopper. Metal substances in materials can be adsorbed through the magnetic plate, the problem that product forming is affected by the metal substances is avoided, the metal substances on the magnetic plate are scraped through the push plate, the problem that the adsorption effect of the magnetic plate is affected by more metal substances is avoided, blocky materials can be screened through the screening plate, and the screening efficiency is improved. And blocky materials are crushed through the crushing blades, so that the problems that the machine is easily blocked and the plastic forming quality is influenced due to the blocky materials are avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of twin-screw extruders, in particular to a feeding device for a twin-screw extruder. Background Art

[0002] Twin-screw extruder is a kind of equipment widely used in the field of plastic processing. It uses twin screws as the main transmission components to plasticize, mix and extrude high-strength and high-toughness polymer materials.

[0003] The twin-screw extruder requires a feeding device for feeding. During the use of the existing feeding device, there will be some large block materials in the material. The screw after the block material is extruded cannot quickly stir the block materials, which not only affects the plastic molding effect, but also easily causes the equipment to be blocked. In addition, there will be metal substances in the material. Currently, the metal substances are usually adsorbed by a magnetic plate. However, after the magnetic plate adsorbs more metal, the magnetic force of the magnetic plate will decrease, which will cause the metal substances to enter the extruder and affect the plastic molding effect.

[0004] Therefore, it is necessary to provide a new feeding device of a twin-screw extruder to solve the above-mentioned technical problems. Utility Model Content

[0005] The purpose of the utility model is to provide a feeding device for a twin-screw extruder to solve the problems raised in the above background technology.

[0006] To achieve the above object, the utility model provides the following technical solution: a feeding device for a twin-screw extruder, comprising a feed hopper, and further comprising:

[0007] A guide plate fixed to the inner wall of the feed hopper for guiding the material, a magnetic plate for adsorbing metal substances in the material is arranged on the top of the guide plate, a push plate for scraping the metal substances is arranged on the top of the magnetic plate, a driving mechanism for driving the push plate to move is arranged inside the feed hopper, and a driving plate is arranged on the outside of the driving mechanism;

[0008] A screening plate is arranged inside the feed hopper for screening bulk materials, a transmission box is arranged on one side of the feed hopper, a transmission mechanism is arranged inside the transmission box, a crushing blade for crushing bulk materials is arranged on the outside of the transmission mechanism, and the inner wall of the feed hopper is rotatably connected to a first rotating rod and a second rotating rod respectively, and multiple groups of push blocks are fixedly connected to the outer sides of the first rotating rod and the second rotating rod.

[0009] Preferably, a guide block is fixedly connected to one side of the push plate, and a limit rod is slidably connected to the inner wall of the guide block. A collection box for collecting metal substances is provided on one side of the feed hopper.

[0010] Preferably, the transmission mechanism comprises a servo motor installed on one side of the transmission box, and the output end of the servo motor is fixedly connected to a transmission rod.

[0011] Preferably, a gear set is fixed on the outer side of the first rotating rod, and the gear set is fixed on the outer side of the second rotating rod.

[0012] Preferably, two groups of fixing sleeves are fixedly connected to the outer side of the first rotating rod, and a pair of connecting rods are fixedly connected to the outer side of the fixing sleeve.

[0013] Preferably, a baffle is fixedly connected to the inner wall of the feed hopper, a guide rod is fixedly connected to the bottom of the baffle, and a spring is provided on the outer side of the guide rod.

[0014] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0015] The utility model can adsorb metal substances in materials through the magnetic plate to avoid the problem that the metal substances affect the molding of products. The driving mechanism drives the driving plate to move so that the push plate scrapes the metal substances on the magnetic plate to avoid the problem that too much metal substances affect the adsorption effect of the magnetic plate. The block materials can be screened through the screening plate and crushed through the crushing blade to avoid the problem that the block materials easily cause machine blockage and affect the quality of plastic molding. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic structural diagram of a preferred embodiment of a feeding device for a twin-screw extruder provided by the utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the push plate and the guide plate in the utility model;

[0018] Figure 3 It is a schematic diagram of the structure inside the feed hopper in the utility model;

[0019] Figure 4 It is a structural schematic diagram of the transmission mechanism in the utility model;

[0020] Figure 5 It is a structural schematic diagram of the screening plate in the utility model.

[0021] In the figure: 1. feed hopper; 2. guide plate; 3. magnetic plate; 4. push plate; 5. drive mechanism; 6. drive plate; 7. screening plate; 8. transmission box; 9. transmission mechanism; 91. servo motor; 92. transmission rod; 10. crushing blade; 11. first rotating rod; 12. second rotating rod; 13. push block; 14. guide block; 15. limit rod; 16. collection box; 17. gear set; 18. fixed sleeve; 19. connecting rod; 20. baffle; 21. guide rod; 22. spring. DETAILED DESCRIPTION

[0022] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined purpose of the utility model, the specific implementation method, structure, characteristics and effects of the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0023] See also Figure 1-5 As shown, a feeding device of a twin-screw extruder comprises a feed hopper 1, an inner wall of the feed hopper 1 is fixed with a guide plate 2 for guiding the material, a magnetic plate 3 is arranged on the top of the guide plate 2, metal substances in the material can be adsorbed by the magnetic plate 3 to avoid the problem that the metal substances affect the product molding, a push plate 4 is arranged on the top of the magnetic plate 3 to scrape the metal substances, and a driving mechanism 5 is arranged inside the feed hopper 1 to drive the push plate 4 to move, the driving mechanism 5 is a motor screw structure in the prior art, and it is not described here, a driving plate 6 is arranged on the outside of the driving mechanism 5, and the two sides of the driving plate 6 are respectively fixedly connected to the two groups of push plates 4, and the driving plate 6 is driven by the driving mechanism 5 to move, so that the push plate 4 scrapes the metal substances on the magnetic plate 3 to avoid the problem that the metal substances affect the product molding. In order to solve the problem that more materials affect the adsorption effect of the magnetic plate 3, a screening plate 7 is arranged inside the feed hopper 1, and the outer side of the screening plate 7 is rotatably connected to the inner wall of the feed hopper 1, and the bulk material can be screened by the screening plate 7, and a transmission box 8 is arranged on one side of the feed hopper 1, and a transmission mechanism 9 is arranged inside the transmission box 8. A crushing blade 10 for crushing the bulk material is arranged on the outer side of the transmission mechanism 9, and the crushing blade 10 is driven by the transmission mechanism 9 to rotate, so that the crushing blade 10 crushes the bulk material, and the inner wall of the feed hopper 1 is rotatably connected with a first rotating rod 11 and a second rotating rod 12 respectively, and the outer sides of the first rotating rod 11 and the second rotating rod 12 are fixedly connected with a plurality of push blocks 13, and the bulk material can be pushed into the transmission box 8 for crushing by the push blocks 13.

[0024] refer to Figure 2 As shown, a guide block 14 is fixedly connected to one side of the push plate 4, and the inner wall of the guide block 14 is slidably connected to a limit rod 15. Both ends of the limit rod 15 are fixedly connected to the inner wall of the feed hopper 1, and a collection box 16 for collecting metal materials is provided on one side of the feed hopper 1. The driving mechanism 5 can drive the driving plate 6 to move, so that the guide block 14 slides on the outside of the limit rod 15, so that the push plate 4 scrapes the metal material on the magnetic plate 3, thereby avoiding the problem that too much metal material affects the adsorption effect of the magnetic plate 3, and the metal material is collected by the collection box 16.

[0025] refer to Figure 3 , Figure 4 and Figure 5As shown, the transmission mechanism 9 includes a servo motor 91 installed on one side of the transmission box 8, the output end of the servo motor 91 is fixedly connected to a transmission rod 92, one end of the transmission rod 92 is rotatably connected to the inner wall of the transmission box 8, the transmission rod 92 is transmission-connected to the first rotating rod 11 through a belt, a gear set 17 is fixed to the outer side of the first rotating rod 11, the gear set 17 is provided with three sets of gears, the gear set 17 is fixed to the outer side of the second rotating rod 12, the first rotating rod 11 and the second rotating rod 12 can be rotated in the same direction by the setting of the three sets of gears, two sets of fixed sleeves 18 are fixedly connected to the outer side of the first rotating rod 11, a pair of connecting rods 19 are fixedly connected to the outer side of the fixed sleeve 18, a baffle 20 is fixedly connected to the inner wall of the feed hopper 1, a guide rod 21 is fixedly connected to the bottom of the baffle 20, the outer side of the guide rod 21 is slidably connected to the inner wall of the screening plate 7, and a spring 22 is provided on the outer side of the guide rod 21.

[0026] Working principle: When the device is in use, the material is poured into the feed hopper 1, and the metal material in the material can be adsorbed by the magnetic plate 3 to avoid the problem that the metal material affects the product molding. The driving mechanism 5 can drive the driving plate 6 to move, so that the guide block 14 slides outside the limit rod 15, and the push plate 4 scrapes the metal material on the magnetic plate 3 to avoid the problem that too much metal material affects the adsorption effect of the magnetic plate 3. The metal material is collected by the collecting box 16, and the material falls on the screening plate 7 through the guide plate 2. The block material can be screened by the screening plate 7, and the block material remains on the screening plate 7. The servo motor 91 is started to drive the transmission rod 92 to rotate, and the transmission rod 92 is driven by the belt The first rotating rod 11 is driven to rotate, and the first rotating rod 11 drives the second rotating rod 12 to rotate through the gear set 17, so that the push block 13 is rotated, and the push block 13 conveys the block material to the bottom of the crushing blade 10. The rotation of the first rotating rod 11 drives the connecting rod 19 to rotate, so that the connecting rod 19 knocks the screening plate 7, so that the screening plate 7 slides on the outside of the guide rod 21, and the spring 22 is contracted, so that the screening plate 7 can vibrate to avoid blockage of the screening plate 7, and the screening plate 7 can be slightly tilted to make the block material fall into the transmission box 8, so that the crushing blade 10 crushes the block material to avoid the problem that the block of material easily causes machine blockage and affects the quality of plastic molding.

[0027] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technical personnel in this field can make some changes or modifications to equivalent embodiments of equivalent changes using the technical contents disclosed above without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A feeding device for a twin-screw extruder, comprising a feed hopper (1), characterized in that: Also includes: A guide plate (2) is fixed to the inner wall of the feed hopper (1) for guiding the material, a magnetic plate (3) is arranged on the top of the guide plate (2) for adsorbing metal substances in the material, a push plate (4) is arranged on the top of the magnetic plate (3) for scraping off the metal substances, a driving mechanism (5) is arranged inside the feed hopper (1) for driving the push plate (4) to move, and a driving plate (6) is arranged on the outside of the driving mechanism (5); A screening plate (7) is arranged inside the feed hopper (1) for screening bulk materials, a transmission box (8) is arranged on one side of the feed hopper (1), a transmission mechanism (9) is arranged inside the transmission box (8), a crushing blade (10) for crushing bulk materials is arranged on the outside of the transmission mechanism (9), and a first rotating rod (11) and a second rotating rod (12) are rotatably connected to the inner wall of the feed hopper (1), and multiple groups of push blocks (13) are fixedly connected to the outer sides of the first rotating rod (11) and the second rotating rod (12).

2. A feeding device for a twin-screw extruder according to claim 1, characterized in that: A guide block (14) is fixedly connected to one side of the push plate (4), and a limit rod (15) is slidably connected to the inner wall of the guide block (14). A collection box (16) for collecting metal substances is provided on one side of the feed hopper (1).

3. A feeding device for a twin-screw extruder according to claim 1, characterized in that: The transmission mechanism (9) comprises a servo motor (91) mounted on one side of the transmission box (8), and the output end of the servo motor (91) is fixedly connected to a transmission rod (92).

4. A feeding device for a twin-screw extruder according to claim 1, characterized in that: A gear set (17) is fixed on the outer side of the first rotating rod (11), and the gear set (17) is fixed on the outer side of the second rotating rod (12).

5. The feeding device of a twin-screw extruder according to claim 1, characterized in that: Two groups of fixing sleeves (18) are fixedly connected to the outer side of the first rotating rod (11), and a pair of connecting rods (19) are fixedly connected to the outer side of the fixing sleeve (18).

6. A feeding device for a twin-screw extruder according to claim 1, characterized in that: A baffle (20) is fixedly connected to the inner wall of the feed hopper (1), a guide rod (21) is fixedly connected to the bottom of the baffle (20), and a spring (22) is arranged on the outer side of the guide rod (21).

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