Double-screw extrusion device for flame-retardant reinforced PBT (polybutylene terephthalate) material

Abstract

The utility model provides a flame-retardant reinforced PBT material twin-screw extrusion device, which comprises a machine body, a discharge port, a feed port, a polishing assembly, a scraper and a roller, the discharge port is arranged on the surface of the machine body, the feed port is arranged on the top of the machine body, the polishing assembly is arranged on the top of the surface of the machine body, the scraper is arranged in the polishing assembly, and the roller is arranged at the bottom of the machine body. A set of sliding rods penetrate through the left side of the grinding assembly, a sliding rod and a first screw penetrate through the right side of the grinding assembly, supporting frames are arranged on the left side and the right side of the grinding assembly, a first motor is connected to the top of the first screw, a second screw is arranged at the top of the grinding assembly, the outer portion of the second screw penetrates through the top of a moving frame, and a connecting rod penetrates through the bottom of the moving frame. According to the design, a second motor drives a second screw rod to rotate, so that the second screw rod can drive a moving frame to move back and forth, and the bottom of the scraper is ground by a grinding head.

Description

Technical Field

[0001] The utility model discloses a twin-screw extruder device for flame-retardant reinforced PBT material, belonging to the technical field of twin-screw extruders. Background Art

[0002] The twin-screw extruder is developed on the basis of the single-screw extruder. Due to its good feeding performance, mixing and plasticizing performance, exhaust performance, extrusion stability and other characteristics, it has been widely used in the molding processing of extruded products. PBT material is an engineering material with excellent performance, excellent toughness and fatigue resistance, heat resistance, good weather resistance, good electrical properties and low water absorption.

[0003] However, the twin-screw extruders for PBT materials currently available on the market cut the PBT material solidified at the discharge port of the twin-screw extruder by means of a scraper, so that the discharge port of the machine body will not be blocked, thereby facilitating the extrusion of the PBT material inside the machine body. However, the long-term use of the scraper will make the blade less sharp, thereby reducing the cutting efficiency. Therefore, a twin-screw extruder for flame-retardant reinforced PBT material is urgently needed to solve the above-mentioned problems. Utility Model Content

[0004] In view of the shortcomings of the prior art, the purpose of the utility model is to provide a twin-screw extruder device for flame-retardant reinforced PBT material to solve the problems raised in the above-mentioned background technology. The utility model has a reasonable structure and good practicality. The second motor drives the second screw to rotate, so that the second screw can drive the movable frame to move back and forth, so that the grinding head can grind the bottom of the scraper.

[0005] In order to achieve the above-mentioned purpose, the utility model is realized through the following technical scheme: a twin-screw extruder of flame-retardant reinforced PBT material, comprising a body, a discharge port, a feed port, a grinding assembly, a scraper and a roller, the surface of the body is provided with a discharge port, and the top of the body is provided with a feed port, the top of the surface of the body is provided with a grinding assembly, and the inside of the grinding assembly is provided with a scraper, the bottom of the body is provided with a roller, a group of sliding rods are inserted on the left side of the grinding assembly, and a sliding rod and a screw rod 1 are inserted on the right side of the grinding assembly, support frames are provided on the left and right sides of the grinding assembly, the top of the screw rod is connected to a No. 1 motor, the top of the grinding assembly is provided with a Screw Rod 2, and the outside of the Screw Rod 2 is inserted in the top of the moving frame, the bottom of the moving frame is inserted with a connecting rod, the top of the moving frame is connected to a limiting block, the right side of the grinding assembly is provided with a No. 2 motor, and a grinding head is provided on one side of the bottom of the moving frame.

[0006] Furthermore, the bottoms of the left and right support frames of the grinding assembly are welded to the two sides of the top of the machine body.

[0007] Furthermore, a placement groove is provided on the top of the grinding component, and the two walls of the placement groove are connected to the two ends of the screw rod 2 by sliding, and the right end of the screw rod 2 is plugged and fixed to the rotating shaft of the second motor.

[0008] Furthermore, support blocks are provided at both ends of the connecting rod, and the tops of the support blocks are welded to the two sides of the bottom of the grinding assembly.

[0009] Furthermore, a clamping strip is provided on one side of the limit block, and a matching clamping groove is provided on the outside of the clamping strip and the top of the grinding assembly.

[0010] Furthermore, the blade of the scraper is placed inside the grinding head, and a grinding stone is provided inside the grinding head.

[0011] Beneficial effects of the utility model: the utility model is a twin-screw extruder device for flame-retardant reinforced PBT material. By starting the No. 2 motor, the screw No. 2 can drive the movable frame to move back and forth inside the grinding assembly. Since the bottom of the scraper is inserted into the inside of the grinding head, the movable frame can drive the grinding head to move back and forth at the bottom of the scraper, so that the grinding stone provided inside the grinding head grinds the blade of the scraper. The design drives the screw No. 2 to rotate through the No. 2 motor, so that the screw No. 2 can drive the movable frame to move back and forth, so that the grinding head grinds the bottom of the scraper. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Other features, objects and advantages of the present invention will become more apparent by reading the detailed description of non-limiting embodiments with reference to the following drawings:

[0013] Figure 1 This is a three-dimensional schematic diagram of the overall structure of a twin-screw extruder for flame-retardant reinforced PBT material of the utility model;

[0014] Figure 2 This is an overall schematic diagram of a grinding assembly of a twin-screw extruder of a flame-retardant reinforced PBT material of the utility model;

[0015] Figure 3 It is a schematic cross-sectional view of a grinding assembly of a twin-screw extruder of a flame-retardant reinforced PBT material of the utility model;

[0016] Figure 4 This is an overall schematic diagram of a moving plate of a twin-screw extruder of a flame-retardant reinforced PBT material of the utility model;

[0017] In the figure: 1-machine body, 2-discharge port, 3-feed port, 4-grinding assembly, 401-support frame, 402-slide rod, 403-screw rod 1, 404-motor No. 1, 405-moving frame, 406-screw rod 2, 407-motor No. 2, 408-limiting block, 409-connecting rod, 410-grinding head, 5-scraper, 6-roller. DETAILED DESCRIPTION

[0018] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0019] See also Figure 1-Figure 4 The utility model provides a technical solution: a twin-screw extruder of a flame retardant reinforced PBT material, comprising a body 1, a discharge port 2, a feed port 3, a grinding component 4, a scraper 5 and a roller 6. The surface of the body 1 is provided with a discharge port 2, and the top of the body 1 is provided with a feed port 3. The top of the surface of the body 1 is provided with a grinding component 4, and the inside of the grinding component 4 is provided with a scraper 5. The bottom of the body 1 is provided with a roller 6. A group of sliding rods 402 are inserted on the left side of the grinding component 4, and a sliding rod 402 is inserted on the right side of the grinding component 4. Rod 402 and screw 1 403, support frames 401 are provided on the left and right sides of the grinding component 4, the top of screw 1 403 is connected to motor 1 404, the top of the grinding component 4 is provided with screw 2 406, and the outside of screw 2 406 is inserted into the top of the moving frame 405, the bottom of the moving frame 405 is inserted with a connecting rod 409, the top of the moving frame 405 is connected to a limiting block 408, the right side of the grinding component 4 is provided with motor 2 407, and the bottom side of the moving frame 405 is provided with a grinding head 410.

[0020] As the first embodiment of the present utility model: the bottoms of the left and right support frames 401 of the grinding assembly 4 are welded to the two sides of the top of the machine body 1. This design plays a role in supporting the grinding assembly 4. A placement groove is provided on the top of the grinding assembly 4, and the two walls of the placement groove are connected to the two ends of the screw rod 406 by sliding. The right end of the screw rod 406 is plugged and fixed to the rotating shaft of the second motor 407. This design can drive the screw rod 406 to rotate through the second motor 407, so that the mobile frame 405 can move back and forth. Support blocks are provided at both ends of the connecting rod 409, and the top of the support block is welded to the two sides of the bottom of the grinding assembly 4. A card strip is provided on one side of the limit block 408, and the outer side of the card strip is provided with a matching card slot at the top of the grinding assembly 4. This design makes the back and forth movement of the mobile frame 405 more stable. The blade of the scraper 5 is placed inside the grinding head 410, and the grinding head 410 is provided with a grinding stone. This design facilitates the grinding operation of the scraper 5.

[0021] As a second embodiment of the present utility model: first, start the machine body 1 to pour the flame retardant reinforced PBT material from the feed port 3 into the interior of the machine body 1, so that the machine body 1 squeezes the flame retardant reinforced PBT material and discharges it from the discharge port 2, and starts the No. 1 motor 404 to drive the screw 1 403 to rotate. At this time, the grinding assembly 4 will move downward, so that the scraper 5 installed inside the grinding machine assembly 4 will cut the flame retardant reinforced PBT material solidified at the discharge port 2, and the sliding rod 402 is used to enhance the stability of the downward movement of the grinding assembly 4. By starting the No. 2 motor 407, the screw 2 406 can drive the moving frame 405 to move back and forth inside the grinding assembly 4. The bottom of the scraper 5 is inserted into the inside of the grinding head 410. At this time, the movable frame 405 can drive the grinding head 410 to move back and forth at the bottom of the scraper 5, so that the grinding stone provided inside the grinding head 410 grinds the blade of the scraper 5, which is beneficial for the scraper 5 to cut the solidified flame retardant reinforced PBT material. The connecting rod 409 is inserted into the bottom of the movable frame 405 to increase the stability of the moving frame 405 moving back and forth. This design drives the screw 2 406 to rotate through the No. 2 motor 407, so that the screw 2 406 can drive the movable frame 405 to move back and forth, so that the grinding head 410 grinds the bottom of the scraper 5.

[0022] The above shows and describes the basic principles and main features of the utility model and the advantages of the utility model. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic features of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is defined by the attached claims rather than the above description, and it is intended to include all changes within the meaning and scope of the equivalent elements of the claims. Any figure mark in the claims should not be regarded as limiting the claims involved.

[0023] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A twin-screw extruder for flame-retardant reinforced PBT material, comprising a body (1), a discharge port (2), a feed port (3), a grinding assembly (4), a scraper (5) and a roller (6), characterized in that: The surface of the machine body (1) is provided with a discharge port (2), and the top of the machine body (1) is provided with a feed port (3); the top of the surface of the machine body (1) is provided with a grinding component (4), and the inside of the grinding component (4) is provided with a scraper (5); and the bottom of the machine body (1) is provided with a roller (6); The grinding assembly (4) comprises a support frame (401), a slide bar (402), a screw rod (403), a first motor (404), a moving frame (405), a second screw rod (406), a second motor (407), a stop block (408), a connecting rod (409) and a grinding head (410). A group of slide bars (402) are inserted on the left side of the grinding assembly (4), and a slide bar (402) and a screw rod (403) are inserted on the right side of the grinding assembly (4). The left and right sides of the grinding assembly (4) are provided with a support frame ( 401), a No. 1 motor (404) is connected to the top of the screw rod 1 (403), a No. 2 screw rod (406) is provided at the top of the grinding component (4), and the outside of the No. 2 screw rod (406) is inserted into the top of the moving frame (405), a connecting rod (409) is inserted into the bottom of the moving frame (405), the top of the moving frame (405) is connected to a limiting block (408), a No. 2 motor (407) is provided on the right side of the grinding component (4), and a grinding head (410) is provided on one side of the bottom of the moving frame (405).

2. A twin-screw extruder of a flame retardant reinforced PBT material according to claim 1, characterized in that: The bottoms of the left and right support frames (401) of the grinding assembly (4) are welded to the top sides of the machine body (1).

3. A twin-screw extruder of a flame retardant reinforced PBT material according to claim 1, characterized in that: A placement groove is provided on the top of the grinding assembly (4), and the two walls of the placement groove are connected to the two ends of the second screw (406) by sliding, and the right end of the second screw (406) is plugged and fixed to the rotating shaft of the second motor (407).

4. A twin-screw extruder of a flame retardant reinforced PBT material according to claim 1, characterized in that: Support blocks are provided at both ends of the connecting rod (409), and the tops of the support blocks are welded to the two sides of the bottom of the grinding assembly (4).

5. The twin-screw extruder of a flame retardant reinforced PBT material according to claim 1, characterized in that: A clamping strip is provided on one side of the limit block (408), and a matching clamping groove is provided on the outside of the clamping strip and on the top of the grinding assembly (4).

6. The twin-screw extruder of a flame retardant reinforced PBT material according to claim 1, characterized in that: The blade of the scraper (5) is placed inside the grinding head (410), and a grinding stone is provided inside the grinding head (410).

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