Feeding mechanism of injection molding machine

Abstract

The utility model discloses a feeding mechanism of an injection molding machine, belongs to the technical field of injection molding machines, and mainly solves the technical problems that in the feeding process of a mechanism in the prior art, since injection molding materials in a molten state contain impurities and hard particles which cannot be molten, the mechanism is lack of a filtering structure, the purity of the molten plastics is difficult to ensure, and the injection molding materials are difficult to melt. The feeding mechanism comprises a feeding cylinder, an installation supporting plate is fixedly connected to the interior of the feeding cylinder, a connecting sleeve is arranged in the installation supporting plate through a bearing, a filtering frame is arranged in the connecting sleeve and is in a cylindrical shape, a plurality of filtering nets are fixedly connected to the filtering frame, and the filtering nets are fixedly connected to the feeding cylinder. A driven rotating wheel is coaxially arranged on the outer surface of the connecting sleeve and located above the mounting supporting plate, a transmission shaft is arranged in the feeding cylinder through a bearing, a driving belt wheel is coaxially arranged on the surface of the transmission shaft, and the driving belt wheel and the driven rotating wheel are in transmission connection through a belt.

Description

Technical Field

[0001] This utility model relates to the field of injection molding machine technology, and more specifically, to an injection molding machine feeding mechanism. Background Technology

[0002] Injection molding machines, also known as injection molding machines or injection machines, are the main molding equipment used to make various shapes of plastic products from thermoplastic or thermosetting plastics using plastic molds. Injection molding machines heat the plastic, apply high pressure to the molten plastic, and inject it to fill the mold cavity. Injection molding machines have a wide range of applications. During the injection molding process, the feeding mechanism on the injection molding machine is needed to guide the molten plastic into the machine for subsequent injection operations.

[0003] However, there are various types of feeding mechanisms in the existing technology. For example, utility model patent CN216230460U relates to a feeding mechanism for an injection molding machine. This utility model includes a feeding shell, a feed inlet, a housing, a flow limiting component, a stirring component, a rotating head, a rotating rod, a flow limiting baffle, a limiting ring, a motor, a stirring auger, a feeding groove, a fixed housing, ball bearings, an inner fixed ring, a fixed block, a machine body, a discharge port, a discharge plate, and a base. The feed inlet is opened on the inner side of the feeding shell, and the housing is installed on the lower end face of the feeding shell. The housing contains... The present invention is equipped with a flow-limiting component, a stirring component is installed on the left side of the lower end face of the housing, an organic body is installed on the right end of the stirring component, a rotating rod is installed on the left end face of the rotating head, a flow-limiting baffle is installed on the outer side of the middle position of the rotating rod, and a partition is installed on the right end face of the motor. Compared with the prior art, the present invention has the following beneficial effects: by using the flow-limiting component, the feeding efficiency of the injection molding material can be controlled; by using the stirring component, the blockage of the injection molding material in the feeding equipment can be prevented, thereby improving the feeding effect of the present invention.

[0004] Although this feeding mechanism can control the feeding efficiency of the injection molding plastic and prevent the injection molding plastic from clogging in the feeding equipment, during the feeding process, because the molten injection molding plastic contains unmeltable impurities and hard particles, the mechanism lacks a filtration structure, making it difficult to ensure the purity of the molten plastic, thus reducing product quality and shortening the equipment life. In order to avoid this phenomenon, it is necessary to design a feeding mechanism for injection molding machines. Utility Model Content

[0005] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the present invention.

[0006] To achieve the above objectives, this utility model provides a feeding mechanism for an injection molding machine, which is accomplished by the following specific technical means:

[0007] A feeding mechanism for an injection molding machine includes a feeding cylinder, an internal mounting plate fixedly connected to the inside of the feeding cylinder, a connecting sleeve disposed inside the mounting plate via a bearing, a cylindrical filter frame disposed inside the connecting sleeve, multiple filter screens fixedly connected to the filter frame, a driven rotating wheel coaxially disposed on the outer surface of the connecting sleeve and positioned above the mounting plate, a drive shaft disposed inside the feeding cylinder via a bearing, a drive pulley coaxially disposed on the surface of the drive shaft, and the drive pulley and the driven rotating wheel being connected by a belt drive.

[0008] Preferably, multiple filter screens are distributed at equal intervals, and a positioning ring is coaxially provided on the outer surface of the filter frame. The positioning ring is located above the connecting sleeve. Two connecting bolts are provided through the connecting sleeve and the positioning ring, and the two connecting bolts are symmetrically distributed. The surfaces of the two connecting bolts are threaded with fastening nuts.

[0009] Preferably, a discharge hopper is provided through the feed cylinder, and the discharge hopper is fixed to one side of the machine cover, with one end of the discharge hopper extending into the filter frame.

[0010] Preferably, a hopper is provided at the bottom of the mounting plate via a connecting flange, and a conveying pipe is connected to the bottom of the hopper.

[0011] Preferably, a protective shell is fixedly connected to the hopper by a support rod. A rotary motor is installed inside the protective shell. The output end of the rotary motor is connected to a screw conveyor shaft, and one end of the screw conveyor shaft extends into the hopper. The surface of the screw conveyor shaft is provided with screw blades.

[0012] Preferably, a fixed frame is fixedly connected to the top of the feed cylinder, and the fixed frame is inverted U-shaped. A servo motor is installed on the fixed frame, and the output end of the servo motor is fixedly connected to one end of the drive shaft. A cover is detachably installed on the top of the fixed frame, and the servo motor is fixed inside the cover.

[0013] Preferably, the protective housing is located below the filter frame, and the spiral blades are located inside the feed pipe.

[0014] Due to the application of the above technical solution, this utility model has the following advantages compared with the prior art:

[0015] This invention, through its connecting sleeve, filter frame, filter screen, driven rotating wheel, drive shaft, and drive pulley, can filter the incoming molten plastic, intercepting unmeltable impurities and hard particles contained in the molten plastic, ensuring the purity of the molten plastic, thereby improving the quality of injection molded products, while also preventing impurities from causing wear to the injection molding machine and extending the life of the injection molding equipment. Attached Figure Description

[0016] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a perspective structural diagram of the present invention;

[0019] Figure 3 This is a partial structural schematic diagram of the present invention;

[0020] Figure 4 This is a schematic diagram of the structure within the filter framework;

[0021] Figure 5 This is an enlarged structural diagram of point A;

[0022] Figure 6 This is a schematic diagram of the structure of the hopper and conveying pipe;

[0023] Figure 7 This is a cross-sectional view of the filter frame.

[0024] In the diagram: 1. Feed cylinder; 2. Mounting support plate; 3. Connecting sleeve; 4. Filter frame; 5. Filter screen; 6. Driven rotating wheel; 7. Drive shaft; 8. Drive pulley; 9. Positioning ring; 10. Connecting bolt; 11. Fastening nut; 12. Fixing frame; 13. Servo motor; 14. Machine cover; 15. Discharge hopper; 16. Connecting flange; 17. Drop hopper; 18. Conveying pipe; 19. Support rod; 20. Protective shell; 21. Rotary motor; 22. Screw conveyor shaft; 23. Screw blade. Detailed Implementation

[0025] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0026] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0027] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments. The present invention provides the following embodiments.

[0028] like Figure 1 , Figure 2 as well as Figure 3 The diagram shows the structure of the feeding mechanism of the injection molding machine in this embodiment. The feeding mechanism includes a feeding cylinder 1, with a mounting plate 2 fixedly connected inside. A connecting sleeve 3 is mounted inside the mounting plate 2 via bearings. A filter frame 4 is mounted inside the connecting sleeve 3, and multiple filter screens 5 are fixedly connected to the filter frame 4. A driven rotating wheel 6 is coaxially mounted on the outer surface of the connecting sleeve 3, and the driven rotating wheel 6 is located above the mounting plate 2. A drive shaft 7 is mounted inside the feeding cylinder 1 via bearings. A drive pulley 8 is coaxially mounted on the surface of the drive shaft 7, and the drive pulley 8 and the driven rotating wheel 6 are connected by a belt drive. The feeding mechanism guides the injection molding material into the injection cylinder. Inside the injection molding machine, the connecting sleeve 3 can rotate on the mounting plate 2. The rotating connecting sleeve 3 drives the filter frame 4 inside to rotate, and multiple filter screens 5 move together with the filter frame 4. The filter screens 5 are made of high-temperature resistant stainless steel. The filter screens 5 are used to filter the molten plastic poured into the frame, intercepting the unmeltable impurities and hard particles contained in the molten plastic. The impurities and hard particles are retained in the filter frame 4. The injection plastic after impurity removal will flow into the inside of the feed cylinder 1 to continue the subsequent feeding operation. This ensures the purity of the molten plastic, improves the quality of the injection molded products, and avoids impurities from causing wear to the injection molding machine, thus extending the service life of the injection molding equipment.

[0029] It is worth noting that, such as Figure 7 As shown, in this embodiment, the filter frame 4 is cylindrical, and the multiple filter screens 5 are distributed at equal intervals.

[0030] like Figure 4 as well as Figure 5As shown, in this embodiment, a positioning ring 9 is coaxially arranged on the outer surface of the filter frame 4, and the positioning ring 9 is located above the connecting sleeve 3. Two connecting bolts 10 are arranged through the connecting sleeve 3 and the positioning ring 9, and the two connecting bolts 10 are symmetrically distributed. The surfaces of the two connecting bolts 10 are threaded with fastening nuts 11. When the filter screen 5 on the filter frame 4 is damaged or blocked, and the filtration effect is affected, the filter frame 4 needs to be removed. By loosening the fastening nuts 11, the connecting bolts 10 can be removed, releasing the fixing effect on the positioning ring 9. Therefore, the staff can pull the filter frame 4 out of the connecting sleeve 3, thereby dismantling the entire filter structure to facilitate the subsequent pouring out of impurities and hard particles, and cleaning of the filter screen 5, ensuring the filtration effect of the filter screen 5.

[0031] like Figure 3 As shown, in this embodiment, a fixed frame 12 is fixedly connected to the top of the feeding cylinder 1, and the fixed frame 12 is inverted U-shaped. A servo motor 13 is installed on the fixed frame 12, and the output end of the servo motor 13 is fixedly connected to one end of the transmission shaft 7. A cover 14 is detachably installed on the top of the fixed frame 12, and the servo motor 13 is fixed inside the cover 14. In order to drive the transmission shaft 7, the servo motor 13 is controlled, and the output end of the servo motor 13 drives the transmission shaft 7 to rotate.

[0032] like Figure 2 as well as Figure 6 As shown, in this embodiment, a discharge hopper 15 is provided through the feed cylinder 1, and the discharge hopper 15 is fixed on one side of the machine cover 14. The discharge hopper 15 is used to inject molten plastic into the injection molding machine. One end of the discharge hopper 15 extends into the filter frame 4. The bottom of the mounting support plate 2 is provided with a drop hopper 17 through the connecting flange 16. The bottom of the drop hopper 17 is connected to the conveying pipe 18. When the impurities and hard particles contained in the molten plastic are filtered out, the pure molten plastic is introduced into the drop hopper 17 through the feed cylinder 1 and conveyed through the conveying pipe 18.

[0033] In this embodiment, a protective shell 20 is fixedly connected to the hopper 17 by a support rod 19. A rotary motor 21 is installed inside the protective shell 20. The output end of the rotary motor 21 is connected to a screw conveyor shaft 22, and one end of the screw conveyor shaft 22 extends into the hopper 17. The surface of the screw conveyor shaft 22 is provided with screw blades 23. The protective shell 20 is located below the filter frame 4, and the screw blades 23 are located inside the conveying pipe 18. When the injection plastic flows into the hopper 17, the rotary motor 21 inside the protective shell 20 is controlled to drive the screw conveyor shaft 22 to rotate through the output end of the rotary motor 21. The screw blades 23 will move together with the screw conveyor shaft 22. The rotating screw conveyor shaft 22 can push the injection plastic to flow in the conveying pipe 18, preventing the injection plastic from being blocked in the conveying pipe 18.

[0034] Although 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 alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An injection molding machine feeding mechanism, comprising a feeding cylinder (1), a mounting support plate (2) is fixedly connected to the inside of the feeding cylinder (1), characterized in that: The inner part of the mounting plate (2) is provided with a connecting sleeve (3) through a bearing, the inner part of the connecting sleeve (3) is provided with a filter frame (4), the filter frame (4) is cylindrical, a plurality of filter screens (5) are fixedly connected on the filter frame (4), the outer surface of the connecting sleeve (3) is coaxially provided with a driven rotating wheel (6), and the driven rotating wheel (6) is located above the mounting plate (2), a transmission shaft (7) is provided in the feeding cylinder (1) through a bearing, the surface of the transmission shaft (7) is coaxially provided with a driving pulley (8), and the driving pulley (8) and the driven rotating wheel (6) are drivingly connected through a belt.

2. An injection molding machine material delivery mechanism as defined in claim 1, wherein: The plurality of filter screens (5) are equidistantly spaced, the outer surface of the filter frame (4) is coaxially provided with a positioning ring (9), and the positioning ring (9) is located above the connecting sleeve (3), the connecting sleeve (3) and the positioning ring (9) are provided with two connecting bolts (10) in penetration, and the two connecting bolts (10) are symmetrically distributed, and the surfaces of the two connecting bolts (10) are both threadedly connected with a fastening nut (11).

3. An injection molding machine material delivery mechanism as defined in claim 1, wherein: The feeding cylinder (1) is provided with a pouring hopper (15) in penetration, and the pouring hopper (15) is fixed on one side of the machine cover (14), and one end of the pouring hopper (15) extends into the filter frame (4).

4. An injection molding machine material delivery mechanism as described in claim 1 wherein: The bottom of the mounting plate (2) is provided with a falling hopper (17) through a connecting flange (16), and the bottom of the falling hopper (17) is communicated with a conveying pipe (18).

5. An injection molding machine material delivery mechanism as claimed in claim 4 wherein: The falling hopper (17) is fixedly connected with a protective shell (20) through a supporting rod (19), the inside of the protective shell (20) is provided with a rotating motor (21), the output end of the rotating motor (21) is connected with a spiral conveying shaft (22), one end of the spiral conveying shaft (22) extends into the falling hopper (17), and the surface of the spiral conveying shaft (22) is provided with a spiral blade (23).

6. An injection molding machine material delivery mechanism as described in claim 1 wherein: The top of the feeding cylinder (1) is fixedly connected with a fixed frame (12), and the fixed frame (12) is inverted U-shaped, the fixed frame (12) is provided with a servo motor (13), and the output end of the servo motor (13) is fixedly connected with one end of the transmission shaft (7), the top of the fixed frame (12) is detachably provided with a machine cover (14), and the servo motor (13) is fixed in the inside of the machine cover (14).

7. An injection molding machine material delivery mechanism as described in claim 5, wherein: The protective shell (20) is located below the filter frame (4), and the spiral blade (23) is located in the conveying pipe (18).

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