Rubber extruder with filtering and screening functions

Abstract

The utility model discloses a rubber extruder with filtering and screening functions, which relates to the technical field of extruders and comprises a workbench, a hot melt extrusion component is arranged on the surface of the workbench, a feed hopper is arranged at the top of one end of the hot melt extrusion component, a screening component is movably arranged on the workbench at the top of the feed hopper, and the screening component is arranged on the workbench. A material distributing sieve plate obliquely arranged in the receiving hopper is used for screening rubber particle raw materials, the rubber particles meeting the specification fall into the feeding hopper, the rubber particles not meeting the specification roll into the crushing box along the material distributing sieve plate to be subjected to secondary crushing, and the crushed rubber particles enter the feeding hopper through a discharging square pipe; and the recycling groove is connected with the discharging square pipe in an inserted mode to recycle crushed rubber particles, and the inner wall of the discharging square pipe is coated with a Teflon coating to reduce material adhesion, so that large particles in rubber particle raw materials are prevented from entering the feeding hopper, sufficient hot melting of the rubber particles is guaranteed, and the quality of extruded rubber parts is improved.

Description

Technical Field

[0001] This utility model relates to the field of extruder technology, specifically to a rubber extruder with a filtering and screening function. Background Technology

[0002] Rubber extruders are core equipment in the rubber industry. They continuously extrude rubber raw materials by plasticizing them through screw rotation and barrel heating, and are widely used in the production of tires, hoses, seals and other products.

[0003] During the use of a rubber extruder, the feed hopper directly receives the rubber granules fed from the feeding end. However, since the rubber granules are obtained through crushing, some larger particles may not be crushed during the production process. When these larger particles are mixed with standard-sized rubber granules and directly fed into the extruder, insufficient heat melting may occur. This results in the extruded rubber parts being encased in unmelted rubber granules, creating a hollow structure, which reduces product quality and causes some inconvenience to production.

[0004] In summary, existing rubber extruders suffer from the problem of directly feeding rubber granules into their interior, which can easily result in larger rubber granules not being fully melted, leading to hollow interiors in the extruded rubber parts. Utility Model Content

[0005] The purpose of this invention is to provide a rubber extruder with a filtering and screening function to solve the technical problem that when most existing rubber extruders are used, the rubber granules are directly fed into them, which easily causes large rubber granules to not be fully melted, resulting in hollow extruded rubber parts.

[0006] The technical problem to be solved by this utility model can be achieved through the following technical solution:

[0007] A rubber extruder with a filtering and screening function includes a worktable.

[0008] A hot melt extrusion assembly is provided on the workbench surface, and a feeding hopper is provided at the top of one end of the hot melt extrusion assembly. A screening assembly is movably provided on the top of the workbench of the feeding hopper.

[0009] The screening assembly includes a laterally movable receiving hopper, a distributing screen plate inclined inside the receiving hopper that can vibrate, a discharge chute on one side of the receiving hopper with the lowest end of the distributing screen plate movably resting on the bottom wall of the discharge chute, a crushing box on one side of the receiving hopper that covers the discharge chute, two sets of crushing rollers symmetrically distributed inside the crushing box that are rotatably arranged and located below the discharge chute, a feeding square tube movably connected to the hot melt extrusion assembly at the bottom of the crushing rollers, upright plates symmetrically arranged at both ends of the top of the workbench, a support slide rod between the upright plates for guiding and limiting the movement of the receiving hopper, and a lead screw between the upright plates for driving the receiving hopper to move.

[0010] Preferably, the hot melt extrusion assembly includes a heating sleeve, an extrusion head disposed at one end of the heating sleeve, a spiral feed rod disposed inside the heating sleeve, and a motor disposed at the other end of the heating sleeve for driving the spiral feed rod.

[0011] Preferably, the lengths of the supporting slide rod and the lead screw are at least twice the length of the receiving hopper, and a sliding sleeve and a threaded sleeve are respectively provided on one side of the receiving hopper. The sliding sleeve is slidably connected to the supporting slide rod, and the threaded sleeve is threadedly connected to the lead screw.

[0012] Preferably, one end of the crushing box is rotatably provided with a toothed disc connected to two sets of crushing rollers, and the toothed discs mesh with each other.

[0013] Preferably, a recycling trough is provided on one side of the feed hopper for insertion with the output end of the discharge square tube.

[0014] Preferably, pulleys are rotatably provided at the other end of the crushing box and on the side of the receiving hopper where a sliding sleeve is provided, and the pulleys on the crushing box are connected to the crushing rollers, with a transmission belt movably provided on the outer side of the pulleys.

[0015] Preferably, a servo motor is provided on the end face of the pulley on the crushing box, and a side plate for fixing the servo motor is provided on the end of the crushing box where the pulley is provided.

[0016] Preferably, the inner wall of one side of the receiving hopper is provided with a cam disk for driving the distributing screen plate to vibrate, and the cam disk is connected to the pulley provided on the crushing box, and an electrical control box is provided on the table surface of the workbench.

[0017] Preferably, a support plate is provided on one side of the workbench and on the top of the electrical control box, and the two sets of support plates are on the same horizontal plane.

[0018] Preferably, the support plate is provided with a guide rail on the side near the receiving hopper, and the receiving hopper is provided with a side protrusion that matches the guide rail on the side near the support plate.

[0019] The beneficial effects of this utility model are:

[0020] 1. In this utility model, the receiving hopper can first receive the rubber granule raw material fed into the feeding hopper. The inclined distribution screen plate in the receiving hopper screens the rubber granule raw material. Those that meet the specifications fall into the feeding hopper, and those that do not meet the specifications roll down the distribution screen plate into the crushing box for secondary crushing. The crushing roller is equipped with trapezoidal blades on its outer periphery to achieve efficient crushing. The crushed rubber granules enter the feeding hopper through the feeding square tube. The recovery tank is inserted into the feeding square tube to recover the crushed rubber granules. The inner wall of the feeding square tube is coated with Teflon to reduce material sticking. This avoids large particles in the rubber granule raw material from entering the feeding hopper, ensures the full heat melting of the rubber granules, and improves the quality of the extruded rubber parts.

[0021] 2. In this utility model, the receiving hopper and the feeding hopper are separate structures. The screw can be rotated in different directions to drive the receiving hopper to reciprocate, thereby separating the receiving hopper and the feeding hopper, which facilitates maintenance and repair by the staff and makes the device more flexible. Attached Figure Description

[0022] The present invention will be further described below with reference to the accompanying drawings.

[0023] Figure 1 This is a three-dimensional schematic diagram of the device in this utility model;

[0024] Figure 2 This is a three-dimensional schematic diagram of the pulley in this utility model;

[0025] Figure 3 This is a schematic diagram of the gear disc structure in this utility model;

[0026] Figure 4 This is a schematic diagram of the cam disk structure in this utility model.

[0027] In the diagram: 1. Workbench; 2. Hot melt extrusion assembly; 3. Feed hopper; 4. Receiving hopper; 5. Distributing screen plate; 6. Discharge chute; 7. Crushing box; 8. Crushing roller; 9. Feeding square tube; 10. Gear disc; 11. Recycling trough; 12. Pulley; 13. Transmission belt; 14. Servo motor; 15. Cam disc; 16. Electrical control box; 17. Support plate; 18. Guide rail; 19. Side protrusion; 20. Vertical plate; 21. Support slide rod; 22. Lead screw. Detailed Implementation

[0028] The specific embodiments of this utility model are described in detail below, but it should be understood that the scope of protection of this utility model is not limited to the specific embodiments.

[0029] like Figure 1-4As shown, a rubber extruder with a filtering and screening function includes a worktable 1.

[0030] A hot melt extrusion assembly 2 is provided on the table surface of the workbench 1. A feed hopper 3 is provided at the top of one end of the hot melt extrusion assembly 2. A screening assembly is movably provided on the top of the workbench 1 above the feed hopper 3.

[0031] The screening assembly includes a transversely movable receiving hopper 4, a shaking dividing screen plate 5 inclined inside the receiving hopper 4, a discharge chute 6 on one side of the receiving hopper 4 with the lowest end of the dividing screen plate 5 movably resting on the bottom wall of the discharge chute 6, a crushing box 7 on one side of the receiving hopper 4 covering the discharge chute 6, two sets of crushing rollers 8 symmetrically distributed inside the crushing box 7 and located below the discharge chute 6, a feeding square tube 9 movably connected to the hot melt extrusion assembly 2 at the bottom of the crushing rollers 8, and upright plates 20 symmetrically arranged at both ends of the top of the workbench 1. A support slide rod 21 between the vertical plates 20 is used to guide and limit the movement of the receiving hopper 4. A lead screw 22 between the vertical plates 20 is used to drive the receiving hopper 4 to move. The hot melt extrusion assembly 2 includes a heating sleeve, an extrusion head disposed at one end of the heating sleeve, a spiral feed rod disposed inside the heating sleeve, and a motor disposed at the other end of the heating sleeve to drive the spiral feed rod. The lengths of the support slide rod 21 and the lead screw 22 are at least twice the length of the receiving hopper 4. A sliding sleeve and a threaded sleeve are respectively disposed on one side of the receiving hopper 4. The sliding sleeve is slidably connected to the support slide rod 21, and the threaded sleeve is threadedly connected to the lead screw 22. Feed hopper 3 A recycling trough 11 is provided on one side for insertion with the output end of the feeding square tube 9. The workbench 1 serves as the main support structure, and its table surface integrates the hot melt extrusion assembly 2, the screening assembly, and the electrical control system. The heating sleeve in the hot melt extrusion assembly 2 is used to melt the rubber granule raw material. It has a built-in spiral feed rod and is driven by a motor to realize the melting and conveying of the rubber raw material. The extrusion head is used to form rubber products. The heating sleeve achieves precise temperature control through electric heating or an oil circulation system. When the rubber granule raw material is fed into the feed hopper 3, it will first pass through the receiving hopper 4. The inclined distribution screen plate 5 in the receiving hopper 4 feeds the rubber granule raw material. The material is screened, and those that meet the specifications fall into the feed hopper 3, while those that do not meet the specifications roll down the distribution screen plate 5 into the crushing box 7 for secondary crushing. The crushing roller 8 is equipped with trapezoidal blades on its outer periphery to achieve efficient crushing. The crushed rubber particles enter the feed hopper 3 through the discharge square tube 9. The recovery tank 11 is inserted into the discharge square tube 9 to recover the crushed rubber particles. The inner wall of the discharge square tube 9 is coated with Teflon to reduce material adhesion. When the device needs to be repaired, the operator rotates the screw 22, which drives the receiving hopper 4 to reciprocate, thereby separating the receiving hopper 4 from the feed hopper 3, making it convenient for the operator to carry out maintenance.

[0032] In this embodiment, specifically, one end of the crushing box 7 is rotatably equipped with a toothed disc 10 connected to two sets of crushing rollers 8, and the toothed discs 10 mesh with each other. The other end of the crushing box 7 and the side of the receiving hopper 4 equipped with a sliding sleeve are both rotatably equipped with pulleys 12, and the pulleys 12 on the crushing box 7 are connected to the crushing rollers 8. A transmission belt 13 is movably arranged on the outer side of the pulleys 12. A servo motor 14 is arranged on the end face of the pulleys 12 on the crushing box 7. A side plate for fixing the servo motor 14 is provided at one end of the crushing box 7 where the pulleys 12 are located. A cam disc 15 for driving the distributing screen plate 5 to vibrate is provided on the inner wall of one side of the receiving hopper 4. The cam disk 15 is connected to the pulley 12 on the crushing box 7. An electrical control box 16 is installed on the table surface of the workbench 1. When the device is in use, a set of crushing rollers 8 and a set of pulleys 12 are synchronously driven to rotate by the servo motor 14. The crushing rollers 8 form a transmission structure through the meshing of two sets of toothed discs 10, thereby realizing the rotation of the two sets of crushing rollers 8. The two sets of pulleys 12 are driven by the transmission belt 13 to drive the cam disk 15 to rotate. The cam disk 15 drives the material distribution screen plate 5 to vibrate and facilitate material feeding, as well as avoid clogging. The electrical control box 16 integrates a PLC control system to monitor parameters such as screening efficiency, crushing current, and extrusion pressure in real time.

[0033] In this embodiment, specifically, support plates 17 are provided on one side of the workbench 1 and the top of the electrical control box 16, and the two sets of support plates 17 are on the same horizontal plane. A guide rail 18 is provided on the side of the support plate 17 near the receiving hopper 4, and a side protrusion 19 matching the guide rail 18 is provided on the side of the receiving hopper 4 near the support plate 17. The side protrusion 19 is embedded in the guide rail 18, which not only supports the receiving hopper 4 but also restricts the movement of the receiving hopper 4, ensuring the stability of the movement of the receiving hopper 4.

[0034] The content not described in detail in this document is prior art known to those skilled in the art.

[0035] The working principle of this utility model is as follows: the rubber raw material first enters the receiving hopper 4, and the material distribution screen plate 5 in the receiving hopper 4 vibrates at high frequency under the drive of the cam disk 15. The rubber particles that meet the requirements enter the feeding hopper 3 through the screen holes, and the unqualified ones enter the crushing box 7 for crushing. After crushing, they fall into the feeding hopper 3 through the discharge square pipe 9.

[0036] The above-disclosed embodiments are only a few specific examples of the present utility model. However, the embodiments of the present utility model are not limited thereto. Any variations that can be conceived by those skilled in the art should fall within the protection scope of the present utility model.

Claims

1. A rubber extruder with a filtering and screening function, comprising a worktable (1), characterized in that: A hot melt extrusion assembly (2) is provided on the table surface of the workbench (1). A feed hopper (3) is provided at the top of one end of the hot melt extrusion assembly (2). A screening assembly is movably provided on the top workbench (1) of the feed hopper (3). The screening assembly includes a transversely movable receiving hopper (4), a shaking material distribution screen plate (5) inclined inside the receiving hopper (4), a discharge chute (6) on one side of the receiving hopper (4), with the lowest end of the material distribution screen plate (5) movably resting on the bottom wall of the discharge chute (6), a crushing box (7) on one side of the receiving hopper (4), and the crushing box (7) covering the discharge chute (6), and two sets of symmetrically distributed rotating components inside the crushing box (7). The crushing roller (8) is located below the discharge trough (6), the discharge square tube (9) is set at the bottom of the crushing roller (8) and is movably connected to the hot melt extrusion assembly (2), the upright plates (20) are symmetrically arranged at both ends of the top of the workbench (1), the support slide rod (21) is set between the upright plates (20) to guide and limit the movement of the receiving hopper (4), and the screw rod (22) is set between the upright plates (20) to drive the receiving hopper (4) to move.

2. The rubber extruder with a filtering and screening function according to claim 1, characterized in that, The hot melt extrusion assembly (2) includes a heating sleeve, an extrusion head disposed at one end of the heating sleeve, a spiral feed rod disposed inside the heating sleeve, and a motor disposed at the other end of the heating sleeve for driving the spiral feed rod.

3. The rubber extruder with a filtering and screening function according to claim 1, characterized in that, The lengths of the supporting slide rod (21) and the lead screw (22) are at least twice the length of the receiving hopper (4). A sliding sleeve and a threaded sleeve are respectively provided on one side of the receiving hopper (4). The sliding sleeve is slidably connected to the supporting slide rod (21), and the threaded sleeve is threadedly connected to the lead screw (22).

4. The rubber extruder with a filtering and screening function according to claim 1, characterized in that, One end of the crushing box (7) is rotatably provided with a toothed disc (10) connected to two sets of crushing rollers (8), and the toothed discs (10) mesh with each other.

5. The rubber extruder with a filtering and screening function according to claim 1, characterized in that, A recycling trough (11) is provided on one side of the feeding hopper (3) for insertion with the output end of the discharge square tube (9).

6. The rubber extruder with a filtering and screening function according to claim 1, characterized in that, The other end of the crushing box (7) and the side of the receiving hopper (4) with a sliding sleeve are both provided with pulleys (12), and the pulleys (12) on the crushing box (7) are connected to the crushing roller (8), and a transmission belt (13) is movably provided on the outside of the pulleys (12).

7. A rubber extruder with a filtering screen function according to claim 6, characterized in that, A servo motor (14) is provided on the end face of the pulley (12) on the crushing box (7), and a side plate for fixing the servo motor (14) is provided on one end of the crushing box (7) where the pulley (12) is located.

8. The rubber extruder with a filtering and screening function according to claim 7, characterized in that, The receiving hopper (4) has a cam disk (15) on one side of its inner wall for driving the material distribution screen plate (5) to vibrate. The cam disk (15) is connected to the pulley (12) on the crushing box (7). The workbench (1) has an electrical control box (16) on its surface.

9. The rubber extruder with a filtering and screening function according to claim 1, characterized in that, The workbench (1) has a support plate (17) on one side of the table surface and the top of the electrical control box (16), and the two sets of support plates (17) are on the same horizontal plane.

10. The rubber extruder with a filtering and screening function according to claim 9, characterized in that, The support plate (17) is provided with a guide rail (18) on the side near the receiving hopper (4), and the receiving hopper (4) is provided with a side protrusion (19) that matches the guide rail (18) on the side near the support plate (17).

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