Automatic feeding mechanism of injection molding machine

Abstract

The utility model discloses an automatic feeding mechanism of an injection molding machine. The automatic feeding mechanism comprises a bin body, a discharging pipe is arranged at an outlet in the lower surface of the bin body, a first flange plate is arranged on the discharging pipe, the upper surface of the bin body is open, a top frame is arranged at the position of the opening of the bin body, and a motor is vertically arranged in the center of the top frame. A driving shaft of the motor downwards penetrates through the top frame and is connected with a main shaft through a second flange plate, a bottom frame is arranged at the lower position in the bin body, and the bottom frame is parallel to the top frame. After the bin body is filled with plastic particle materials, the materials can slowly flow out of the discharging pipe under the action of self weight, the motor drives the main shaft to rotate, the first stirring rod and the second stirring rod can rotate along with the main shaft, the materials gathered at the outlet position of the bin body are stirred, the materials are scattered, and therefore the materials are prevented from being accumulated, and the efficiency is improved. It is guaranteed that materials can smoothly pass through the discharging opening from beginning to end; the device can be popularized and used.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molding machine production, in particular to an automatic feeding mechanism for an injection molding machine. Background Art

[0002] Injection molding machine is also known as injection molding machine or injection machine. It is the main molding equipment that uses plastic molding molds to make plastic products of various shapes from thermoplastics or thermosetting plastics. It is divided into vertical, horizontal, and all-electric types. The injection molding machine can heat the plastic and apply high pressure to the molten plastic to make it eject and fill the mold cavity. The filling of the injection molding machine is mostly to put the granular plastic into the hopper installed on the injection molding machine. The material in the hopper, under the action of its own weight, will enter the screw cavity of the injection molding machine. However, in the process of the material falling, due to the narrowing of the outlet of the hopper, the material is easily blocked at the mouth of the hopper, resulting in poor material discharge. Some hoppers will be installed with vibration motors on the side walls, but during the vibration of the vibration motor, the entire hopper will shake, which will easily cause damage to the hopper over time.

[0003] In view of the above problems, the present utility model is proposed. Utility Model Content

[0004] In view of the deficiencies in the prior art, the purpose of the utility model is to provide an automatic feeding mechanism for an injection molding machine, so as to solve the problems mentioned in the background technology.

[0005] In order to solve the above technical problems, the utility model provides the following technical solutions.

[0006] The utility model provides an automatic feeding mechanism for an injection molding machine, comprising a warehouse body, a discharge pipe is arranged at the outlet of the lower surface of the warehouse body, a first flange is arranged on the discharge pipe, the upper surface of the warehouse body is open, a top frame is arranged at the open position of the warehouse body, a motor is vertically arranged at the center of the top frame, a driving shaft of the motor passes through the top frame downward and is connected to a main shaft through a second flange, a bottom frame is arranged at the lower position inside the warehouse body, and the bottom frame is parallel to the top frame;

[0007] The main shaft is vertical and located in the center of the warehouse body. The middle and lower part of the main shaft is installed on the base frame. A plurality of stirring structures are evenly arranged around the lower end of the main shaft from bottom to top at equal intervals. The plurality of stirring structures are arranged around the lower end of the main shaft.

[0008] A pressure sensor is disposed on the lower surface of the bottom frame, and a controller and an alarm are disposed on the upper surface of the top frame. The pressure sensor signal is connected to the controller, and the controller controls the connection to the alarm.

[0009] Preferably, the middle part of the base frame is disc-shaped, a limit plate is provided at the lower middle part of the main shaft, the main shaft passes through the middle part of the base frame, and the lower surface of the limit plate is attached to the upper surface of the middle part of the base frame.

[0010] Preferably, the stirring structure comprises a first stirring rod and a plurality of second stirring rods, wherein the first stirring rod is vertically arranged on the main shaft, and an end of the first stirring rod away from the main shaft is close to the vertical projection of the inner wall of the bottom outlet of the bin body.

[0011] Preferably, a plurality of the second stirring rods are evenly arranged on the surface of the first stirring rod at equal intervals, the second stirring rod is perpendicular to the first stirring rod, and the second stirring rod has two directions, vertical and horizontal.

[0012] Preferably, the lower end of the main shaft is flush with the upper surface of the bottom outlet of the bin body.

[0013] Preferably, the warehouse body consists of an upper cylindrical part and a lower frustoconical part.

[0014] Preferably, the first flange is installed in the lower middle position of the discharge pipe.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] After the silo is filled with plastic granules, the materials can slowly flow out of the discharge pipe under the action of their own weight. The motor drives the main shaft to rotate, and the first stirring rod and the second stirring rod can rotate with the main shaft to stir the materials gathered at the outlet of the silo to disperse the materials, thus avoiding material accumulation and ensuring that the materials can smoothly pass through the discharge port from beginning to end;

[0017] As the material continues to flow out, when the height of the accumulated material is lower than the pressure sensor, the pressure sensor cannot detect the pressure signal, and the controller can control the alarm to sound to remind the on-site staff to add materials to the warehouse in time to ensure the continuous injection molding production;

[0018] The main shaft is detachably connected to the driving shaft of the motor. When the first stirring rod and the second stirring rod are worn and broken, the main shaft can be conveniently disassembled for inspection and maintenance. The device can be widely used. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a three-dimensional diagram of the warehouse body of the utility model;

[0020] Figure 2 It is a three-dimensional diagram of the main shaft of the utility model;

[0021] Figure 3 This is a three-dimensional diagram of the first stirring rod of the utility model.

[0022] In the figure: 1. bin body; 11. discharge pipe; 12. first flange; 13. top frame; 14. motor; 15. alarm; 16. bottom frame; 17. pressure sensor; 2. main shaft; 21. limit plate; 22. first stirring rod; 23. second stirring rod. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0024] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0025] like Figure 1-3 As shown, an automatic feeding mechanism for an injection molding machine comprises a bin body 1, a discharge pipe 11 is arranged at the outlet of the lower surface of the bin body 1, that is, the plastic granular material in the bin body 1 flows out through the discharge pipe 11, a first flange 12 is arranged on the discharge pipe 11, and the discharge pipe 11 can be installed at the feed port position of the screw bin of the injection molding machine through the first flange 12, the upper surface of the bin body 1 is open, so it is convenient to add materials into the bin body 1, a top frame 13 is arranged at the open position of the bin body 1, a motor 14 is vertically arranged at the center of the top frame 13, the driving shaft of the motor 14 passes through the top frame 13 downward and is connected to the main shaft 2 through the second flange, a bottom frame 16 is arranged at the lower position inside the bin body 1, the bottom frame 16 is parallel to the top frame 13, and the top frame 13 supports the motor 14 and the alarm 15;

[0026] The main shaft 2 is vertical and located in the center of the silo 1. The middle and lower part of the main shaft 2 is installed on the base frame 16. The base frame 16 supports the main shaft 2. A plurality of stirring structures are evenly arranged around the lower end of the main shaft 2 at equal intervals from bottom to top. The plurality of stirring structures are arranged around the lower end of the main shaft 2.

[0027] A pressure sensor 17 is provided on the lower surface of the bottom frame 16, and a controller and an alarm 15 are provided on the upper surface of the top frame 13. The signal of the pressure sensor 17 is connected to the controller, and the controller controls the connection to the alarm 15. When the material height in the bin body 1 is lower than the height of the pressure sensor 17, the alarm 15 can sound to remind the workers to add materials.

[0028] The middle part of the base frame 16 is disc-shaped, and a limit plate 21 is set in the middle and lower position of the main shaft 2. The main shaft 2 passes through the middle part of the base frame 16, and the lower surface of the limit plate 21 is attached to the upper surface of the middle part of the base frame 16. The middle part of the base frame 16 supports the limit plate 21, that is, supports the main shaft 2.

[0029] The stirring structure includes a first stirring rod 22 and multiple second stirring rods 23. The first stirring rod 22 is vertically arranged on the main shaft 2. The end of the first stirring rod 22 away from the main shaft 2 is close to the vertical projection of the inner wall of the bottom outlet of the warehouse body 1, that is, the first stirring rod 22 can cover the edge of the internal outlet of the warehouse body 1.

[0030] A plurality of second stirring rods 23 are evenly arranged on the surface of the first stirring rod 22 at equal intervals. The second stirring rods 23 are perpendicular to the first stirring rod 22 . The second stirring rods 23 have two directions, vertical and horizontal.

[0031] The lower end of the main shaft 2 is flush with the upper surface of the bottom outlet of the bin body 1, so that the main shaft 2 does not affect the discharge of materials during rotation.

[0032] The bin body 1 is composed of an upper cylindrical part and a lower truncated cone part.

[0033] The first flange 12 is installed at a lower middle position of the discharge pipe 11 .

[0034] In summary: after the silo is filled with plastic granular materials, the materials can slowly flow out from the discharge pipe 11 under the action of their own weight, the motor 14 drives the main shaft 2 to rotate, and the first stirring rod 22 and the second stirring rod 23 can rotate with the main shaft to stir the materials gathered at the outlet of the silo 1 to disperse the materials, thereby avoiding material accumulation and ensuring that the materials can smoothly pass through the discharge port from beginning to end;

[0035] As the material continues to flow out, when the height of the accumulated material is lower than the pressure sensor 17, the pressure sensor 17 cannot detect the pressure signal, and the controller can control the alarm 15 to sound to remind the on-site staff to add materials to the bin 1 in time to ensure the continuous injection molding production;

[0036] The main shaft 2 is detachably connected to the driving shaft of the motor 14. When the first stirring rod 22 and the second stirring rod 23 are worn and broken, the main shaft 2 can be conveniently disassembled for inspection and maintenance. The device can be widely used.

[0037] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An automatic feeding mechanism for an injection molding machine, characterized in that: It comprises a warehouse body (1), a discharge pipe (11) is arranged at the outlet of the lower surface of the warehouse body (1), a first flange (12) is arranged on the discharge pipe (11), the upper surface of the warehouse body (1) is open, a top frame (13) is arranged at the open position of the warehouse body (1), a motor (14) is arranged vertically at the center of the top frame (13), a driving shaft of the motor (14) passes through the top frame (13) downward and is connected to the main shaft (2) through a second flange, a bottom frame (16) is arranged at the lower position inside the warehouse body (1), and the bottom frame (16) is parallel to the top frame (13); The main shaft (2) is vertically shaped and located at the center of the warehouse body (1). The middle and lower part of the main shaft (2) is installed on the base frame (16). A plurality of stirring structures are evenly arranged around the lower end of the main shaft (2) at equal intervals from bottom to top. The plurality of stirring structures are arranged around the lower end of the main shaft (2). A pressure sensor (17) is provided on the lower surface of the bottom frame (16), and a controller and an alarm (15) are provided on the upper surface of the top frame (13). The pressure sensor (17) signal is connected to the controller, and the controller controls the connection to the alarm (15).

2. The automatic feeding mechanism of an injection molding machine according to claim 1, characterized in that: The middle part of the base frame (16) is disc-shaped, a limiting plate (21) is arranged at the middle lower position of the main shaft (2), the main shaft (2) passes through the middle part of the base frame (16), and the lower surface of the limiting plate (21) is attached to the upper surface of the middle part of the base frame (16).

3. The automatic feeding mechanism of an injection molding machine according to claim 1, characterized in that: The stirring structure comprises a first stirring rod (22) and a plurality of second stirring rods (23); the first stirring rod (22) is vertically arranged on the main shaft (2); an end of the first stirring rod (22) away from the main shaft (2) is close to the projection of the inner wall of the bottom outlet of the bin body (1) in the vertical direction.

4. The automatic feeding mechanism of an injection molding machine according to claim 3, characterized in that: A plurality of the second stirring rods (23) are evenly arranged at equal intervals on the surface of the first stirring rod (22); the second stirring rod (23) is perpendicular to the first stirring rod (22); and the second stirring rod (23) has two directions, vertical and horizontal.

5. The automatic feeding mechanism of an injection molding machine according to claim 1, characterized in that: The lower end of the main shaft (2) is flush with the upper surface of the bottom outlet of the bin body (1).

6. The automatic feeding mechanism of an injection molding machine according to claim 1, characterized in that: The bin body (1) consists of an upper cylindrical part and a lower truncated cone part.

7. The automatic feeding mechanism of an injection molding machine according to claim 1, characterized in that: The first flange (12) is installed at a lower middle position of the discharge pipe (11).

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