Automatic feeding device of plastic extruder

Abstract

The utility model provides an automatic feeding device of a plastic extruder, which relates to the technical field of extruders and comprises a base, supports are fixedly connected to two sides of the base, an extrusion cylinder is fixedly connected between the two supports and is positioned right above the base, a first motor is fixedly mounted on one side, far away from the extrusion cylinder, of one support, and a second motor is fixedly mounted on the other side, far away from the extrusion cylinder, of the other support. The side, close to the first motor, of the top end of the extrusion barrel is fixedly connected with a material conveying pipe, the top end of the material conveying pipe is fixedly connected with a feeding barrel, the second motor drives the stirring shaft to rotate anticlockwise, the multiple stirring rods are driven to stir raw materials, the raw materials are matched with the heating rods to heat the raw materials, and the raw materials are evenly heated and cannot be hardened; the inner side wall of the feeding barrel cavity is scraped by a scraper, raw material waste caused by adhesion of the inner side wall of the cavity is avoided, a stirring shaft is driven by a second motor to rotate clockwise, the stirring shaft drives a conveying shaft to rotate, quantitative automatic feeding is achieved, blockage is not prone to occurring through spiral conveying, and practicability is greatly improved as a whole.

Description

Technical Field

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

[0002] In plastic extrusion molding equipment, plastic extruder is usually called the main machine, and the subsequent equipment plastic extrusion molding machine is called the auxiliary machine. The main machine of the plastic extruder is the extruder, which consists of an extrusion system, a transmission system and a heating and cooling system. Plastic extrusion molding machinery is one of the widely used machines in the plastic processing industry, both now and in the future.

[0003] Existing:

[0004] Comparative document CN211441079U discloses an automatic feeding device for a plastic extruder. "During the feeding process of the current extruder, the staff often pours the material into the hopper of the extruder, which requires the staff to frequently add material, which wastes manpower and increases production costs. Therefore, it is very meaningful to develop an automatic feeding device that is convenient for the extruder. Therefore, an automatic feeding device for a plastic extruder is proposed; in the utility model, two symmetrically arranged baffles can block the discharge port to prevent the material from flowing out of the discharge port. When the output shaft of the second motor drives the belt to rotate, the two baffles are One of the transmission shafts rotates, and gears are sleeved on the two transmission shafts and the two gears are meshed, so the two transmission shafts drive the baffle plates to rotate in opposite directions, so that the baffle plates and the discharge port are staggered, realizing automatic discharge of materials. Compared with frequent manual feeding, the degree of automation is higher, the production cost is reduced, and it is more convenient to use; in the utility model, a stirring rod is provided inside the storage box, and the stirring rod is transmission-connected with the output shaft of the first motor fixed on the upper surface wall of the storage box, and the output shaft of the first motor can drive the stirring rod to stir the material, so that the material is mixed more evenly, which is conducive to the production of plastics;”

[0005] However, the automatic feeding device of the plastic extruder has a too simple structure. Due to the long-term storage of raw materials, the raw materials are easy to harden and stick, which is not conducive to subsequent feeding. The inner wall of the storage box is easy to stick to the raw materials, resulting in waste. At the same time, it is not scraped off in time, which is not conducive to later cleaning. Impurities mixed in the raw materials are not filtered, and excessive accumulation is easy to block.

[0006] Therefore, the utility model provides an automatic feeding device for a plastic extruder. Utility Model Content

[0007] The purpose of the utility model is to solve the shortcomings in the prior art and provide an automatic feeding device for a plastic extruder.

[0008] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: an automatic feeding device for a plastic extruder, comprising a base, both sides of the base are fixedly connected with supports, an extrusion barrel is fixedly connected between the two supports and is located directly above the base, one of the supports is fixedly installed with a first motor on the side away from the extrusion barrel, a feed pipe is fixedly connected to the side of the top of the extrusion barrel close to the first motor, a feed barrel is fixedly connected to the top of the feed pipe, a stirring mechanism is installed in the feed barrel, the stirring mechanism comprises a second motor and a stirring shaft, the second motor is fixedly installed on the top of the feed barrel, the stirring shaft is arranged inside the feed barrel, a plurality of stirring rods are fixedly connected on both sides of the symmetrical stirring shaft, a heating rod is fixedly installed on the top of the plurality of stirring rods, a scraper is fixedly connected between the ends of the plurality of stirring rods on both sides away from the stirring shaft, and a feed shaft is installed at the bottom end of the stirring shaft.

[0009] As a preferred solution of the present invention, the top end of the stirring shaft extends out of the feed barrel and is fixedly connected to the output end of the second motor, and the scraper is in contact with the side wall of the inner cavity of the feed barrel.

[0010] As a preferred solution of the present invention, the feed shaft is located in the feed pipe, the feed shaft is designed with propeller blades and the outer peripheral edge is in contact with the side wall of the inner cavity of the feed pipe.

[0011] As a preferred solution of the present invention, a filter plate is installed between the stirring shaft and the feed shaft, a one-way bearing is fixedly installed on the central axis of the filter plate, a plurality of filter screens are provided on the filter plate, the outer peripheral edge of the one-way bearing is fixedly connected to the cavity wall at the bottom end of the feed barrel, and the filter plate is designed with sloped surfaces on both sides.

[0012] As a preferred solution of the present invention, the stirring shaft is fixedly connected to the feed shaft clockwise via a one-way bearing, and the stirring shaft is movably connected to the feed shaft counterclockwise via a one-way bearing.

[0013] As a preferred solution of the present invention, a feed port is provided on the top of the feed barrel close to the second motor, the bottom of the feed barrel is designed in a leak-collecting shape, and drain ports are provided at both ends of the lower slope ports on both sides of the filter plate at the bottom of the feed barrel, and valves are installed on the drain ports.

[0014] The beneficial effects of the utility model are as follows: the feed barrel is filled with raw materials through the feed port. In order to prevent the raw materials from being left for a long time to cool and harden, the second motor drives the stirring shaft to rotate counterclockwise, driving a plurality of stirring rods to stir the raw materials and cooperate with the heating rod to heat the raw materials. The raw materials are evenly heated and will not harden. During the rotation, the scraper scrapes the inner side wall of the feed barrel cavity to prevent the inner side wall of the cavity from sticking and wasting raw materials. The second motor drives the stirring shaft to rotate clockwise, and the stirring shaft drives the feed shaft to rotate, so as to realize quantitative automatic feeding. The spiral conveyor is not easy to be blocked. The impurities mixed in the raw materials can be removed by the filter screen of the filter plate without affecting the subsequent production, which greatly improves the practicality as a whole. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A three-dimensional structural schematic diagram of an automatic feeding device for a plastic extruder provided by the utility model;

[0016] Figure 2 A schematic diagram of the planar cross-sectional structure of a feeding barrel of an automatic feeding device for a plastic extruder provided by the utility model;

[0017] Figure 3 The utility model provides a schematic diagram of the structure of a filter plate of an automatic feeding device for a plastic extruder when viewed from above.

[0018] Legend:

[0019] 1. Base; 2. Support; 3. Extruder; 4. First motor; 5. Feed barrel; 51. Feed port; 6. Feed pipe; 7. Stirring mechanism; 71. Second motor; 72. Stirring shaft; 73. Stirring rod; 74. Scraper; 75. Heating rod; 76. Feed shaft; 8. Filter plate; 81. One-way bearing; 82. Filter. DETAILED DESCRIPTION

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

[0021] Example

[0022] like Figure 1 , Figure 2 , Figure 3As shown, the utility model provides a technical solution: an automatic feeding device for a plastic extruder, comprising a base 1, both sides of the base 1 are fixedly connected with supports 2, an extrusion barrel 3 is fixedly connected between the two supports 2 and is located directly above the base 1, a first motor 4 is fixedly installed on one side of one of the supports 2 away from the extrusion barrel 3, a feed pipe 6 is fixedly connected to the side of the top of the extrusion barrel 3 close to the first motor 4, a feed barrel 5 is fixedly connected to the top of the feed pipe 6, a stirring mechanism 7 is installed in the feed barrel 5, the stirring mechanism 7 comprises a second motor 71 and a stirring shaft 72, the second motor 71 is fixedly installed on the top of the feed barrel 5, the stirring shaft 72 is arranged inside the feed barrel 5, a plurality of stirring rods 73 are fixedly connected on both sides of the stirring shaft 72, a heating rod 75 is fixedly installed on the top of the plurality of stirring rods 73, a scraper 74 is fixedly connected between the ends of the plurality of stirring rods 73 on both sides away from the stirring shaft 72, and a feed shaft 76 is installed at the bottom end of the stirring shaft 72.

[0023] The top end of the stirring shaft 72 extends out of the feed barrel 5 and is fixedly connected to the output end of the second motor 71. The scraper 74 contacts the side wall of the inner cavity of the feed barrel 5. When the second motor 71 drives the stirring shaft 72 to rotate, it also drives the scraper 74 to scrape the inner side wall of the feed barrel 5 to prevent the raw materials from sticking to the cavity wall.

[0024] The feed shaft 76 is located in the feed pipe 6. The feed shaft 76 adopts a propeller blade design and the outer peripheral edge is in contact with the inner cavity side wall of the feed pipe 6. When the feed shaft 76 rotates, the propeller blade fits with the inner cavity side wall of the feed pipe 6 to realize spiral quantitative conveying of raw materials without jamming.

[0025] A filter plate 8 is installed between the stirring shaft 72 and the feed shaft 76. A one-way bearing 81 is fixedly installed on the central axis of the filter plate 8. A plurality of filter screens 82 are provided on the filter plate 8. The outer peripheral edge of the one-way bearing 81 is fixedly connected to the cavity wall at the bottom end of the feed barrel 5. The filter plate 8 is designed with sloped surfaces on both sides. On the basis of effectively filtering the raw materials, the sloped surface is used to facilitate the subsequent removal of impurities adhered to the filter plate 8, which can be removed by flushing or scraping with tools.

[0026] The stirring shaft 72 is fixedly connected to the feed shaft 76 clockwise via a one-way bearing 81. Clockwise rotation of the stirring shaft 72 can lock the one-way bearing 81 to drive the feed shaft 76 to rotate. The stirring shaft 72 is movably connected to the feed shaft 76 counterclockwise via the one-way bearing 81. Counterclockwise rotation of the stirring shaft 72 does not drive the feed shaft 76 to rotate due to the movably connected one-way bearing 81.

[0027] A feed port 51 is provided on the side of the top of the feed barrel 5 close to the second motor 71, and the bottom of the feed barrel 5 is designed in a leak-collecting shape to facilitate material collection and subsequent quantitative conveying by the feed shaft 76. Both ends of the lower slope of the bottom of the feed barrel 5 close to the filter plate 8 are provided with drain outlets, and valves are installed at the drain outlets. Opening the valve allows the drain outlet to discharge impurities adhered to the filter plate 8.

[0028] Working principle:

[0029] As shown in the base 1-3: Specifically, when the automatic feeding device of the plastic extruder is used, the feed barrel 5 is first filled with raw materials through the feed port 51, and the second motor 71 is driven to drive the stirring shaft 72 to rotate counterclockwise. Since the one-way bearing 81 is movable, its feed shaft 76 does not rotate, and the stirring shaft 72 drives a plurality of stirring rods 73 to stir the raw materials, and cooperates with the heating rod 75 to heat the raw materials to avoid the raw materials from being hardened due to long-term storage, which is not conducive to subsequent transportation. At the same time, the scraper 74 is used to stir the inner wall of the feed barrel 5. Scrape off to avoid the waste of raw materials sticking together. The filter screen 82 on the filter plate 8 can filter the impurities in the raw materials to ensure the purity of the raw materials. Subsequently, the valve of the support 2 of the feed barrel 5 can be opened, and the impurities on the filter plate 8 can be washed by water, and discharged from the support 2 of the feed barrel 5 using the slope surface of the filter plate 8. Drive the second motor 71 to drive the stirring shaft 72 to rotate clockwise. Since the one-way bearing 81 is locked, it can drive the feed shaft 76 to rotate to realize the quantitative delivery of the raw materials. The extrusion mechanism in the extrusion barrel 3 is a prior art and will not be described in detail.

[0030] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. An automatic feeding device for a plastic extruder, comprising a base (1), characterized in that: Supports (2) are fixedly connected to both sides of the base (1); an extrusion barrel (3) is fixedly connected between the two supports (2) and is located directly above the base (1); a first motor (4) is fixedly installed on the side of one of the supports (2) away from the extrusion barrel (3); a feed pipe (6) is fixedly connected to the side of the top of the extrusion barrel (3) close to the first motor (4); a feed barrel (5) is fixedly connected to the top of the feed pipe (6); a stirring mechanism (7) is installed in the feed barrel (5); the stirring mechanism (7) includes a second motor The invention relates to a mixing device (71) and a mixing shaft (72), wherein the second motor (71) is fixedly mounted on the top of the feed barrel (5), the mixing shaft (72) is arranged inside the feed barrel (5), a plurality of mixing rods (73) are fixedly connected on both sides of the mixing shaft (72), a heating rod (75) is fixedly mounted on the top of the plurality of mixing rods (73), a scraper (74) is fixedly connected between the ends of the plurality of mixing rods (73) on both sides away from the mixing shaft (72), and a feed shaft (76) is mounted on the bottom end of the mixing shaft (72).

2. The automatic feeding device for a plastic extruder according to claim 1, characterized in that: The top end of the stirring shaft (72) extends out of the feed barrel (5) and is fixedly connected to the output end of the second motor (71), and the scraper (74) is in contact with the side wall of the inner cavity of the feed barrel (5).

3. The automatic feeding device for a plastic extruder according to claim 1, characterized in that: The material delivery shaft (76) is located in the material delivery pipe (6). The material delivery shaft (76) is designed as a propeller blade and its outer periphery is in contact with the inner cavity side wall of the material delivery pipe (6).

4. The automatic feeding device for a plastic extruder according to claim 1, characterized in that: A filter plate (8) is installed between the stirring shaft (72) and the feeding shaft (76), a one-way bearing (81) is fixedly installed on the central axis of the filter plate (8), a plurality of filter screens (82) are provided on the filter plate (8), the outer peripheral edge of the one-way bearing (81) is fixedly connected to the cavity wall of the bottom end of the feed barrel (5), and the filter plate (8) is designed to have sloped surfaces on both sides.

5. The automatic feeding device for a plastic extruder according to claim 4, characterized in that: The stirring shaft (72) is fixedly connected to the feeding shaft (76) in a clockwise direction via a one-way bearing (81), and the stirring shaft (72) is movably connected to the feeding shaft (76) in a counterclockwise direction via the one-way bearing (81).

6. The automatic feeding device for a plastic extruder according to claim 4, characterized in that: A feed port (51) is provided on the top of the feed barrel (5) near the second motor (71), and the bottom of the feed barrel (5) is designed to be leak-collecting. Both ends of the lower slope openings on both sides of the bottom of the feed barrel (5) near the filter plate (8) are provided with sewage outlets, and valves are installed on the sewage outlets.

Images