Injection molding material feeding device

Abstract

The utility model provides an injection molding feeding device belongs to the development technical field of injection molding feeding equipment, including the vertical setting of feeding pipeline, the feeding pipeline top has the accommodation chamber, be provided with the sieve cylinder in the accommodation chamber, and the sieve cylinder is supported through the vibrating mechanism, the sieve cylinder has at least two layers of sieve plate in it, and its upper portion has the feed port, and the lower portion has the discharge port, and the material that enters the sieve cylinder from the feed port is flowed from the sieve plate and enters the discharge port under the action of vibrating mechanism, and then enters the feeding pipeline from the discharge port. The above-mentioned solution is provided to the problem that the contact type pressing sieve causes the deformation of plastic particles or the clogging of sieve holes.

Description

Technical Field

[0001] This application belongs to the field of development technology of injection molding feeding equipment, and specifically relates to an injection molding feeding device. Background Technology

[0002] Injection molding machines are the main molding equipment used to make various shapes of plastic products from thermoplastic or thermosetting plastics using plastic molding molds. When feeding plastic into the injection molding machine, the suction pipe is generally used to send the plastic particles from the bottom to the upper feeding cylinder through the principle of negative pressure.

[0003] In existing technologies, the inability to disassemble and clean the material after injection molding, coupled with the inconvenience of installing and removing the filter screen and poor cleaning effect, are addressed by presenting a technical solution in document CN218196574U. This solution involves connecting the upper and lower loading cylinders via a connecting plate and includes an internal filter screen and cleaning mechanism. However, the applicant's technical personnel believe that the contact-type pressing sieve causes deformation of plastic particles or blockage of the sieve holes; the single-layer filtration relying on a rotating cleaning rod results in low filtration efficiency; and the cumbersome operation requires disassembling screws and slide rails. Utility Model Content

[0004] The purpose of this invention is to address the problems existing in the prior art by providing an injection molding feeding device for a vibrating multi-layer sieve plate filtration system.

[0005] To achieve the above technical objectives, the following technical solution is provided: an injection molding feeding device, comprising a vertically arranged feeding pipe, a mounting cavity above the feeding pipe, a screening cylinder inside the mounting cavity, the screening cylinder being supported by a vibration mechanism; the screening cylinder having at least two layers of screen plates, with an inlet at the top and an outlet at the bottom, the material entering the screening cylinder through the inlet is subjected to the vibration mechanism, flows out from the screen plates into the outlet, and then enters the feeding pipe from the outlet.

[0006] In one feasible embodiment, the vibration mechanism includes a base supported by a feeding pipe, the base having an inner cavity, and an inner channel connecting the feeding pipe and the discharge port within the inner cavity; several motors are arranged around the inner channel and between the inner cavity, each motor having its own fixed cavity; a turntable is arranged on the shaft of the motor used for vibration, and a protrusion is provided on the side of the turntable to contact the bottom surface of the screening cylinder, wherein the bottom surface of the screening cylinder is an inclined surface that gradually rises from the discharge port to the outside; Several spring components are provided on the side of the base to support the sieve cylinder; when the motor rotates in the plane, the protrusion rotates on the inclined surface of the sieve cylinder, causing the sieve cylinder to vibrate up and down in the mounting cavity.

[0007] In an feasible manner, a backwashing mechanism for reverse cleaning of the screening cylinder is installed inside the feeding pipe. The backwashing mechanism includes an external blower and a telescopic pipe connected to the blower. The free end of the telescopic pipe is embedded in the feeding pipe. A limiting plate is provided at the free end to prevent the telescopic pipe from falling out of the feeding pipe. The limiting plate can also prevent the material in the feeding pipe from flowing out. The limiting plate is equipped with a pair of traction ropes located in the horizontal plane. The traction ropes are fixed to the shaft of the motor used for winding. The traction ropes are tightened by rotating the motor, so that the telescopic pipe enters the inner channel and is tightly connected to the discharge port.

[0008] In one feasible approach, a storage space is provided inside the feeding pipe for accommodating the limiting plate.

[0009] In one feasible embodiment, the sieve plate has three layers, each sieve plate having filter holes. The diameter of the filter holes on the sieve plate above the sieve cylinder is 8mm-10mm; the diameter of the filter holes on the sieve plate in the middle of the sieve cylinder is 5mm-7mm; and the diameter of the filter holes on the sieve plate below the sieve cylinder is 3mm-4mm.

[0010] Compared with the prior art, the present invention has the following advantages: The technical solution of this application features a vibrating multi-layer sieve plate filtration system. It employs a vibrating mechanism with an inclined base and cam structure, and also incorporates telescopic pipe backwashing technology. This significantly improves filtration efficiency. Furthermore, the vibration not only filters the material but also separates impurities during cleaning. The combined vibration and airflow backwashing mechanism ensures a more thorough cleaning. The integrated vibration mechanism design eliminates the need for frequent disassembly of the filter components. Attached Figure Description

[0011] 1. Feeding pipe; 11. Housing cavity; 2. Screening cylinder; 21. Screen plate; 22. Feed inlet; 23. Discharge outlet; 210. Filter hole; 3. Vibration mechanism; 31. Base; 32. Inner channel; 33. Motor; 34. Fixed cavity; 35. Turntable; 36. Protrusion; 37. Spring component; 4. Backwashing mechanism; 41. Fan; 42. Telescopic pipe; 43. Limiting plate; 44. Traction rope; 5. Storage space. Figure 1 This is a schematic diagram of the overall structure of this embodiment; Figure 2 This is a side view diagram of this embodiment; Figure 3 for Figure 2 Sectional view at point AA; Figure 4 This is a schematic diagram of the vibration mechanism in this embodiment; Detailed Implementation

[0012] like Figure 1 , Figure 2, Figure 3 The embodiment shown includes an injection molding feeding device comprising a vertically arranged feeding pipe 1, with a mounting cavity 11 at the top of the feeding pipe 1. A screening cylinder 2 is installed inside the mounting cavity 11, and the screening cylinder 2 is supported by a vibration mechanism 3. The screening cylinder 2 has at least two layers of screen plates 21, with an inlet 22 at the top and an outlet 23 at the bottom. Material entering the screening cylinder 2 through the inlet 22 is vibrated by the vibration mechanism 3, flows out of the screen plates 21 and into the outlet 23, and then enters the feeding pipe 1 through the outlet 23. The screen plates 21 are arranged in three layers, each screen plate 21 having filter holes 210. The diameter of the filter holes 210 on the screen plates 21 located above the screening cylinder 2 is 10 mm; the diameter of the filter holes 210 on the screen plates 21 located in the middle of the screening cylinder 2 is 7 mm; and the diameter of the filter holes 210 on the screen plates 21 located below the screening cylinder 2 is 4 mm.

[0013] In this embodiment, as Figure 4 The vibration mechanism 3 shown includes a base 31 supported by a feeding pipe 1. The base 31 has an inner cavity, and the inner cavity has an inner channel 32 connecting the feeding pipe 1 and the discharge port 23. Several motors 33 are arranged around the inner channel 32 and between the inner cavity. Each motor 33 has a separate fixed cavity 34. A turntable 35 is arranged on the shaft of the motor 33 used for vibration. The side of the turntable 35 is provided with a protrusion 36 that contacts the bottom surface of the sieve cylinder 2. The bottom surface of the sieve cylinder 2 is an inclined surface that gradually rises from the discharge port 23 to the outside. Several springs 37 for supporting the sieve cylinder 2 are arranged on the side of the base 31. When the motor 33 rotates in the plane, the protrusion 36 rotates on the inclined surface of the sieve cylinder 2, so that the sieve cylinder 2 vibrates up and down in the mounting cavity 11.

[0014] In this embodiment, as Figure 4 The feeding pipe 1 shown is equipped with a backwashing mechanism 4 for reverse cleaning of the screening cylinder 2. The backwashing mechanism 4 includes an external blower 41 and a telescopic pipe 42 connected to the blower 41. The free end of the telescopic pipe 42 is embedded in the feeding pipe 1, and a limiting plate 43 is provided at the free end to prevent the telescopic pipe 42 from falling off the feeding pipe 1. The limiting plate 43 also prevents the material in the feeding pipe 1 from flowing out. A pair of traction ropes 44 located in the horizontal plane are provided on the limiting plate 43. The traction ropes 44 are respectively fixed on the rotating shaft of the motor 33 used for winding. By rotating the motor 33, the traction ropes 44 are tightened, so that the telescopic pipe 42 enters the inner channel 32 and achieves a tight connection with the discharge port 23. Preferably, the feeding pipe 1 has a storage space 5 for placing the limiting plate 43.

[0015] Injection molding granules enter the screening cylinder 2 through the feed inlet 22. Through the vibration mechanism 3, granules meeting process requirements pass through three layers of screen plates 21 and enter the discharge outlet 23, then flow into the feeding pipe 1. Although the screening cylinder 2 can be directly removed from the housing cavity 11 for cleaning, its operating efficiency is high, and the content of granules not meeting injection molding requirements is low. When adding injection molding granules, the backwashing mechanism 4 blows debris and granules that are not the correct size from the filter holes 210 to the side of the screening cylinder 2, allowing for further feeding. When the content of granules that are not the correct size is high, the backwashing mechanism 4 cleans the screen plates 21, and the entire screening cylinder 2 is removed and inverted, allowing the granules to flow out from the feed inlet 22.

[0016] In the description of this specification, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing the technical solution of this patent and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this patent application.

[0017] In this specification, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this specification according to the specific circumstances.

[0018] In this specification, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0019] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. An injection molding feeding device, characterized in that, The device includes a vertically arranged feeding pipe (1), with a mounting cavity (11) above the feeding pipe (1). A screening cylinder (2) is installed in the mounting cavity (11), and the screening cylinder (2) is supported by a vibration mechanism (3). The screening cylinder (2) has at least two layers of screen plates (21), with an inlet (22) at the top and an outlet (23) at the bottom. The material entering the screening cylinder (2) through the inlet (22) is subjected to the vibration mechanism (3), flows out from the screen plate (21) into the outlet (23), and then enters the feeding pipe (1) through the outlet (23). The vibration mechanism (3) includes a base (31) supported by the feeding pipe (1), the base (31) having an inner cavity, the inner cavity having an inner channel (32) connecting the feeding pipe (1) and the discharge port (23); a plurality of motors (33) are arranged around the inner channel (32) and between the inner cavity, the motors (33) having individual fixed cavities (34); a turntable (35) is arranged on the rotating shaft of the motor (33) used for vibration, the side of the turntable (35) having a protrusion (36) that contacts the bottom surface of the sieve cylinder (2), wherein the bottom surface of the sieve cylinder (2) is an inclined surface that gradually rises from the discharge port (23) outward; The base (31) is provided with several springs (37) on its side for supporting the sieve cylinder (2); when the motor (33) rotates in the plane, the protrusion (36) rotates on the inclined surface of the sieve cylinder (2), causing the sieve cylinder (2) to vibrate up and down in the mounting cavity (11).

2. The injection molding feeding device according to claim 1, characterized in that, The feeding pipe (1) is provided with a backwashing mechanism (4) for backwashing the sieve cylinder (2). The backwashing mechanism (4) includes an external blower (41) and a telescopic pipe (42) connected to the blower (41). The free end of the telescopic pipe (42) is embedded in the feeding pipe (1). The free end is provided with a limiting piece (43) to prevent the telescopic pipe (42) from falling off the feeding pipe (1). The limiting piece (43) can also prevent the material in the feeding pipe (1) from flowing out. The limiting plate (43) is provided with a pair of traction ropes (44) located in the horizontal plane. The traction ropes (44) are respectively fixed on the rotating shaft of the motor (33) used for winding the line. The traction ropes (44) are tightened by rotating the motor (33), so that the telescopic pipe (42) enters the inner channel (32) and is tightly connected to the discharge port (23).

3. The injection molding feeding device according to claim 2, characterized in that, The feeding pipe (1) has a storage space (5) for placing the limiting piece (43).

4. The injection molding feeding device according to claim 1, characterized in that, The sieve plate (21) is provided with three layers, and each sieve plate (21) is provided with a filter hole (210). The diameter of the filter hole (210) on the sieve plate (21) located above the sieve cylinder (2) is 8mm-10mm; the diameter of the filter hole (210) on the sieve plate (21) located in the middle of the sieve cylinder (2) is 5mm-7mm; and the diameter of the filter hole (210) on the sieve plate (21) located below the sieve cylinder (2) is 3mm-4mm.

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