Adjustable double-screw extrusion device

Abstract

The utility model provides an adjustable twin-screw extrusion device which comprises a device chassis and an adjusting mechanism, a rotating shaft drives a feeding screw at the bottom to rotate, the rotating shaft enters a twin-screw structure through a feeding section groove with a hole in the bottom to perform extrusion work, an operator can combine and match a plurality of groups of feeding section grooves and screw section grooves according to extrusion work, and the extrusion efficiency is improved. Section grooves with different requirements are installed on the section groove sliding rails at the bottom, the functional adaptability to different extrusion materials and different extrusion durations is improved, the two sets of extrusion motors can adjust the relative distance to slide on the motor sliding rails, the distance between the two screws at the tail ends of the extrusion motors is changed, and the extrusion coefficient is changed. The multiple sets of smashing rods and the sectional screw rods can be connected through the protruding grooves in the two ends, the extrusion requirements for different materials are met, the sliding shaft bases are matched with the extrusion motors to move on the sliding rails, the relative distance of double helixes is changed, the material extrusion applicability is improved, and extruded finished products enter a material receiving bin to be collected and placed.

Description

Technical Field

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

[0002] Twin-screw plastic extruders are high-quality, efficient plastic extrusion equipment. Compared to single-screw extruders, twin-screw extruders can achieve satisfactory mixing results at lower speeds. The material's residence time in the machine is short, resulting in less shear heat, making it suitable for processing heat-sensitive materials and requiring less thermal stabilizer. Twin-screw extruders rely primarily on a stable and easily controlled heater for heat supply, which prevents thermally unstable materials from decomposing and producing toxic gases, ensuring safe operation.

[0003] According to the search announcement number CN221717788U, a twin-screw plastic extruder that is easy to feed includes an extrusion sleeve, four corners of the bottom end of the extrusion sleeve are fixedly connected to support feet, and the left side of the extrusion sleeve is fixedly connected to a shell. The twin-screw plastic extruder that is easy to feed is provided with a second drive motor, a connecting shaft, a driven gear and a screw conveying shaft. When the raw materials inside the storage hopper need to enter the interior of the extrusion sleeve, the second drive motor is started, and the second drive motor drives the first drive gear to rotate through the connecting shaft. The rotation of the first drive gear can drive the screw conveying shaft to rotate through the driven gear. The rotation of the screw conveying shaft can allow the raw materials inside the storage hopper to enter the interior of the extrusion sleeve through the feed barrel, thereby automatically feeding and reducing labor. The speed of rotation of the first drive gear can control the feeding speed, which solves the problem of slow feeding speed and easy clogging of the feed barrel.

[0004] However, the following problems exist when implementing the above technical solutions: the above technical solutions have general feeding protection, no corresponding anti-blocking structure, and the machine is prone to jamming and stopping. The twin-screw structure is fixed and the relative spacing of the twin screws cannot be adjusted. The internal screw is set to a closed setting, which makes it difficult to open and replace internal parts conveniently. The extrusion coefficient cannot be adjusted according to the extrusion material, and the applicability of the device is general. Utility Model Content

[0005] The purpose of the present invention is to provide an adjustable twin-screw extruder to solve the problems in the above-mentioned background technology.

[0006] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions: an adjustable twin-screw extruder, comprising a device chassis and an adjustment mechanism, wherein feeding brackets are provided on both sides of the device chassis, a connecting ring is provided on the inner side of the top end of the feeding bracket, shock-absorbing springs are provided on both sides of the connecting ring, an adjustment mechanism is provided at the central bottom of the feeding bracket, a feeding motor is provided on the top of the shock-absorbing spring, a rotating shaft is provided at the bottom of the feeding motor, a rotating scraper is provided on the outer side of the rotating shaft, and the bottom end of the rotating shaft is provided with a rotating scraper. A feeding screw is provided, a feeding hopper is provided on the outside of the feeding screw, a feeding node is provided at the bottom of the feeding hopper, a screw node is provided on the rear side of the feeding node, a node slide is provided at the bottom of the screw node, a motor slide is provided on the front side of the node slide, an extrusion motor is provided on the top of the motor slide, a crushing rod is provided at the end of the extrusion motor, a segmented screw is provided on one side of the crushing rod, a sliding shaft seat is provided at the outer end of the segmented screw, and a material receiving bin is provided at the inner bottom of the sliding shaft seat.

[0007] Preferably, the device chassis and the feeding bracket are fixedly connected, the feeding bracket and the connecting ring are fixedly connected, the connecting ring and the shock-absorbing spring are fixedly connected, and two groups of shock-absorbing springs are provided.

[0008] Preferably, the damping spring is in sliding connection with the feeding motor, and the feeding motor is in rotating connection with the rotating shaft.

[0009] Preferably, the rotating shaft and the rotating scraper are fixedly connected, two groups of rotating scrapers are provided, the rotating shaft and the feeding screw are fixedly connected, the outer edge of the rotating scraper matches the size of the inner wall of the feeding hopper, and the feeding hopper and the bottom feeding section slot are connected by a slot.

[0010] Preferably, the feed section groove and the screw section groove are connected by a slot, the size of the feed section groove matches that of the screw section groove, and the feed section groove, the screw section groove and the section groove slide are connected by a sliding connection, the size of the feed section groove, the screw section groove and the section groove slide are matched.

[0011] Preferably, the device chassis and the motor slide rail are connected by bolts, and the motor slide rail and the extrusion motor are connected by sliding.

[0012] Preferably, the extrusion motor and the crushing rod are rotationally connected, and the extrusion motor is provided with two groups. The crushing rod and the segmented screw are connected by a slot. The segmented screw and the sliding shaft seat are rotationally connected, and the sliding shaft seat is provided with two groups. The device chassis and the material receiving bin are connected by a slot.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] When the top feeding motor is operating, the shock-absorbing spring can reduce the vibration of the rotating scraper to avoid wear and jamming. The feeding motor rotates to avoid clogging of the extruded material at the bottom. The rotation of the shaft drives the rotating scraper to rotate on the inner wall of the feeding hopper to avoid residue of extruded material and ensure the full mixing of different extruded materials. The shaft drives the feeding screw at the bottom to rotate, accelerating the falling process and feeding speed of the material in the feeding hopper. The material enters the twin-screw structure through the feeding slot with a hole at the bottom for extrusion. The operator can set multiple groups of feeding slots and screw slots according to the extrusion operation. By combining and matching, the section slots with different requirements are installed on the section slot slide rails at the bottom to improve the functional adaptability to different extrusion materials and different extrusion times. The two sets of extrusion motors can adjust the relative distance and slide on the motor slide rails to change the distance between the double screws at the ends and change the extrusion coefficient. Multiple sets of crushing rods and segmented screws can be connected through the raised grooves at both ends to meet the extrusion requirements of different materials. The sliding shaft seat cooperates with the extrusion motor to move on its own slide rails to change the relative distance between the double screws and improve the applicability of material extrusion. The finished products after extrusion are collected and placed in the receiving bin. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the overall appearance structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the internal appearance structure of the utility model;

[0017] Figure 3 This is a schematic diagram of the structure of the top feeding part of the utility model;

[0018] Figure 4 This is a schematic diagram of the back appearance structure of the utility model.

[0019] Numbers in the figure: 1. Device chassis; 2. Feeding bracket; 3. Connecting ring; 4. Shock-absorbing spring; 5. Adjusting mechanism; 501. Feeding motor; 502. Rotating shaft; 503. Rotating scraper; 504. Feeding screw; 505. Feeding hopper; 506. Feeding slot; 507. Screw slot; 508. Slot slide; 509. Motor slide; 510. Extrusion motor; 511. Crushing rod; 512. Segmented screw; 513. Sliding shaft seat; 514. Receiving bin. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] See also Figure 1-4 The utility model provides a technical solution: an adjustable twin-screw extruder, including a device chassis 1 and an adjusting mechanism 5, a feeding bracket 2 is provided on both sides of the device chassis 1, a connecting ring 3 is provided on the inner side of the top end of the feeding bracket 2, and shock-absorbing springs 4 are provided on both sides of the connecting ring 3, an adjusting mechanism 5 is provided at the central bottom of the feeding bracket 2, a feeding motor 501 is provided on the top of the shock-absorbing spring 4, a rotating shaft 502 is provided at the bottom of the feeding motor 501, a rotating scraper 503 is provided on the outer side of the rotating shaft 502, a feeding screw 504 is provided at the bottom end of the rotating shaft 502, and the feeding screw 504 is provided. A feeding hopper 505 is provided on the outside, a feeding node 506 is provided at the bottom of the feeding hopper 505, a screw node 507 is provided on the rear side of the feeding node 506, a node slide rail 508 is provided at the bottom of the screw node 507, a motor slide rail 509 is provided on the front side of the node slide rail 508, an extrusion motor 510 is provided on the top of the motor slide rail 509, a crushing rod 511 is provided at the end of the extrusion motor 510, a segmented screw 512 is provided on one side of the crushing rod 511, a sliding shaft seat 513 is provided at the outer end of the segmented screw 512, and a material receiving bin 514 is provided at the inner bottom of the sliding shaft seat 513.

[0022] Furthermore, the device chassis 1 and the feeding bracket 2 are fixedly connected, the feeding bracket 2 and the connecting ring 3 are fixedly connected, and the connecting ring 3 and the shock-absorbing spring 4 are fixedly connected. There are two groups of shock-absorbing springs 4. When the top feeding motor is operating, the shock-absorbing spring 4 can reduce the vibration of the rotating scraper 503 to avoid wear and jamming.

[0023] Furthermore, the damping spring 4 is slidably connected to the feeding motor 501 , and the feeding motor 501 is rotatably connected to the rotating shaft 502 . The feeding motor 501 rotates to avoid clogging of the bottom extruded material.

[0024] Furthermore, the rotating shaft 502 and the rotating scraper 503 are fixedly connected, and two groups of rotating scrapers 503 are provided. The rotating shaft 502 and the feeding screw 504 are fixedly connected, and the outer edge of the rotating scraper 503 matches the inner wall size of the feeding hopper 505. The feeding hopper 505 and the bottom feeding slot 506 are connected by a slot. The rotation of the rotating shaft 502 drives the rotating scraper 503 to rotate on the inner wall of the feeding hopper 505 to avoid residue of extruded materials and ensure sufficient mixing of different extruded materials. The rotating shaft 502 drives the feeding screw 504 at the bottom to rotate, accelerating the falling process and feeding speed of the material in the feeding hopper 505, and entering the twin-screw structure through the feeding slot 505 with a hole in the bottom for extrusion.

[0025] Furthermore, the feed section groove 506 and the screw section groove 507 are connected by a card slot, the sizes of the feed section groove 506 and the screw section groove 507 match, the feed section groove 506, the screw section groove 507 and the section groove slide 508 are connected by a sliding connection, the sizes of the feed section groove 506, the screw section groove 507 and the section groove slide 508 match, and the operator can combine multiple groups of feed section grooves 506 and screw section grooves 507 according to the extrusion operation, and install the section grooves with different requirements on the section groove slide 508 at the bottom, so as to improve the functional adaptability to different extrusion materials and different extrusion times.

[0026] Furthermore, the device chassis 1 and the motor slide rail 509 are connected by bolts, and the motor slide rail 509 and the extrusion motor 510 are connected by sliding. The two sets of extrusion motors 510 can adjust the relative distance and slide on the motor slide rail 509 to change the distance between the twin screws at the ends and change the extrusion coefficient.

[0027] Furthermore, the extrusion motor 510 and the crushing rod 511 are rotationally connected, and the extrusion motor 510 is provided with two groups. The crushing rod 511 and the segmented screw 512 are connected by a slot, and the segmented screw 512 and the sliding shaft seat 513 are rotationally connected. There are two groups of sliding shaft seats 513. The device chassis 1 and the material receiving bin 514 are connected by a slot. Multiple groups of crushing rods 511 and segmented screws 512 can be connected through the raised grooves at both ends to meet the extrusion requirements of different materials. The sliding shaft seat 513 cooperates with the extrusion motor 510 to move on their respective slide rails, change the relative distance of the double helix, and improve the applicability of material extrusion. The finished products after extrusion are collected and placed in the material receiving bin 514.

[0028] Working principle: First, the operator can combine and match multiple sets of feeding slots 506 and screw slots 507 according to the extrusion operation, and install the slots with different requirements on the slot slide rail 508 at the bottom to improve the functional adaptability to different extrusion materials and different extrusion times. At the same time, multiple sets of crushing rods 511 are connected to the segmented screw 512 through the raised grooves at both ends. The two sets of extrusion motors 510 can adjust the relative distance and slide on the motor slide rail 509 to change the distance between the double screws at the end and change the extrusion coefficient. The sliding shaft seat 513 cooperates with the extrusion motor 510 to move on their respective slide rails to change the relative distance between the double screws and improve the applicability of material extrusion. Then, when the top feeding motor is operating, The shock-absorbing spring 4 can reduce the vibration of the rotating scraper 503 to avoid wear and jamming. The feeding motor 501 rotates to avoid clogging of the bottom extruded material. The rotating shaft 502 rotates to drive the rotating scraper 503 to rotate on the inner wall of the feeding hopper 505 to avoid residue of extruded material and ensure sufficient mixing of different extruded materials. The rotating shaft 502 drives the feeding screw 504 at the bottom to rotate, accelerating the falling process and feeding speed of the material in the feeding hopper 505, and entering the twin-screw structure through the feeding slot 505 with a hole in the bottom for extrusion. Finally, the extruded finished product enters the receiving bin 514 for collection and placement, thus completing the use process of an adjustable twin-screw extruder.

[0029] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An adjustable twin-screw extruder, comprising a device chassis (1) and an adjustment mechanism (5), characterized in that: Feeding brackets (2) are provided on both sides of the chassis (1) of the device, a connecting ring (3) is provided on the inner side of the top end of the feeding bracket (2), shock-absorbing springs (4) are provided on both sides of the connecting ring (3), an adjusting mechanism (5) is provided at the central bottom of the feeding bracket (2), a feeding motor (501) is provided on the top of the shock-absorbing spring (4), a rotating shaft (502) is provided at the bottom of the feeding motor (501), a rotating scraper (503) is provided on the outer side of the rotating shaft (502), a feeding screw (504) is provided at the bottom end of the rotating shaft (502), a feeding hopper (505) is provided on the outer side of the feeding screw (504), and the feeding hopper (505) is provided. ) is provided with a feeding slot (506) at the bottom, a screw slot (507) is provided at the rear side of the feeding slot (506), a slot slide rail (508) is provided at the bottom of the screw slot (507), a motor slide rail (509) is provided at the front side of the slot slide rail (508), an extrusion motor (510) is provided at the top of the motor slide rail (509), a crushing rod (511) is provided at the end of the extrusion motor (510), a segmented screw (512) is provided on one side of the crushing rod (511), a sliding shaft seat (513) is provided at the outer end of the segmented screw (512), and a material receiving bin (514) is provided at the inner bottom of the sliding shaft seat (513).

2. The adjustable twin-screw extruder according to claim 1, characterized in that: The device chassis (1) and the feeding bracket (2) are fixedly connected, the feeding bracket (2) and the connecting ring (3) are fixedly connected, and the connecting ring (3) and the shock-absorbing spring (4) are fixedly connected. Two groups of shock-absorbing springs (4) are provided.

3. The adjustable twin-screw extruder according to claim 1, characterized in that: The damping spring (4) and the feeding motor (501) are in sliding connection, and the feeding motor (501) and the rotating shaft (502) are in rotational connection.

4. The adjustable twin-screw extruder according to claim 1, characterized in that: The rotating shaft (502) and the rotating scraper (503) are fixedly connected. Two groups of rotating scrapers (503) are provided. The rotating shaft (502) and the feeding screw (504) are fixedly connected. The outer edge of the rotating scraper (503) matches the inner wall size of the feeding hopper (505). The feeding hopper (505) and the bottom feeding slot (506) are connected by a slot.

5. The adjustable twin-screw extruder according to claim 1, characterized in that: The feed slot (506) and the screw slot (507) are connected by a slot, and the sizes of the feed slot (506) and the screw slot (507) match each other. The feed slot (506), the screw slot (507) and the slot slide rail (508) are connected by a sliding connection, and the sizes of the feed slot (506), the screw slot (507) and the slot slide rail (508) match each other.

6. The adjustable twin-screw extruder according to claim 1, characterized in that: The device chassis (1) and the motor slide rail (509) are connected by bolts, and the motor slide rail (509) and the extrusion motor (510) are connected by sliding.

7. The adjustable twin-screw extruder according to claim 1, characterized in that: The extrusion motor (510) and the crushing rod (511) are connected in rotation, and two groups of the extrusion motor (510) are provided. The crushing rod (511) and the segmented screw (512) are connected in a slot, and the segmented screw (512) and the sliding shaft seat (513) are connected in rotation, and two groups of the sliding shaft seat (513) are provided. The device chassis (1) and the material receiving bin (514) are connected in a slot.

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