Feeding device of injection molding machine

Abstract

The invention discloses an injection molding machine feeding device, and relates to the technical field of injection molding machine equipment.The injection molding machine feeding device comprises an injection molding machine body, a material conveying pipeline is arranged in the injection molding machine body, a plurality of heating assemblies are arranged outside the material conveying pipeline, and a feeding hopper is installed outside the material conveying pipeline through a through hole; and a driving motor is installed outside the feeding hopper, the upper end of the driving motor is connected with a driving gear through a rotating shaft, and the position, located above the driving motor, of the outer surface of the feeding hopper is rotationally connected with a driven gear ring connected with the driving gear in an engaged mode. By arranging a series of structures, the stirring assembly rotating continuously and the screw communicating with the material conveying pipeline, plastic particles in the feeding hopper can be continuously fed into the material conveying pipeline, and the plastic particles can be effectively prevented from being accumulated at an outlet of the feeding hopper; and the material conveying efficiency and continuity are ensured.

Description

Technical Field

[0001] The invention relates to the technical field of injection molding machine equipment, in particular to a feeding device for an injection molding machine. Background Art

[0002] Injection molding machine, also known as injection molding machine, is the main molding equipment that uses plastic molding molds to make plastic products of various shapes from thermoplastics or thermosetting plastics. Injection molding machines can be divided into vertical, horizontal and vertical-horizontal composite types according to the arrangement of the injection device and the clamping device.

[0003] Existing injection molding machines usually use a hopper to feed plastic particles into a pipe, convey the plastic particles to a mold assembly through a screw, and heat-melt the plastic particles inside the pipe through a heating assembly wrapped around the surface of the pipe. However, when conveying the plastic particles into the feed pipe through the hopper, the plastic particles have a certain hardness before hot melting, and are easily accumulated at the discharge port of the hopper, thereby affecting the feeding efficiency. Summary of the invention

[0004] The object of the present invention is to provide a feeding device for an injection molding machine to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical scheme: a feeding device for an injection molding machine comprises an injection molding machine body, a feeding pipeline is arranged inside the injection molding machine body, a plurality of heating components are arranged outside the feeding pipeline, a feeding hopper is installed on the outside of the feeding pipeline through a through hole, a driving motor is installed on the outside of the feeding hopper, the upper end of the driving motor is connected with a driving gear through a rotating shaft, the outer surface of the feeding hopper is located above the driving motor and is rotatably connected with a driven gear ring meshing with the driving gear, a connecting cross bar is installed at a position of the upper end of the driven gear ring located at the opening of the feeding hopper, a driven telescopic rod is installed at the center position of the lower end of the connecting cross bar, a rotating rod is installed at the lower end of the driven telescopic rod, a screw is installed at the lower end of the rotating rod and enters the interior of the feeding pipeline through the through hole, the left and right sides of the rotating rod are symmetrically rotatably connected with telescopic components, and the other end of the telescopic component is installed with a stirring component in contact with the inner wall of the feeding hopper.

[0006] Preferably, a support plate is installed at the upper end of the through hole of the conveying pipeline, the feed hopper passes through the support plate and communicates with the through hole, a motor protection shell connected to the feed hopper is installed on the outside of the driving motor, and two reinforcement plates are installed at the lower end of the motor protection shell, and the lower end of the reinforcement plate is connected to the upper end of the support plate.

[0007] Preferably, a pipeline protection shell is installed on the outside of the material conveying pipeline, and a transparent glass frame is provided on the lower surface of the feed hopper.

[0008] Preferably, the telescopic assembly includes a first sleeve, a sliding rod and a second sleeve, an arc groove is opened on both symmetrical sides of the rotating rod, the second sleeve is rotatably connected to the inside of the arc groove through a rotating shaft, two first fixed plates are symmetrically installed at one end of the stirring assembly, both ends of the first sleeve are rotatably connected through a rotating shaft and a first fixed plate, and a sliding rod is slidably provided between the first sleeve and the second sleeve.

[0009] Preferably, the stirring assembly includes a fixed rotating rod and a soft pad, one end of the fixed rotating rod is rotatably connected to the telescopic assembly through a first fixed plate, and the other end of the fixed rotating rod is installed with a soft pad.

[0010] Preferably, a cavity is opened inside the rotating rod, a fixed ring is fixedly installed inside the cavity, a lifting slide rod is slidably connected inside the fixed ring, the lower end of the lifting slide rod is connected to the upper end of the screw rod, and a limiting plate is provided at the position where the upper end of the lifting slide rod is located above the fixed ring.

[0011] Preferably, a closed circular ring is installed at the opening of the lower end of the cavity, and the lifting slide rod and the closed circular ring are slidably connected.

[0012] Preferably, two spring telescopic rods are symmetrically installed between the lifting slide rod and the inner wall of the cavity, and a rotating block is installed at both ends of the spring telescopic rod.

[0013] Preferably, two second fixed plates are installed on both sides symmetrically of the lifting slide bar surface, and two second fixed plates are installed symmetrically on the inner wall surface of the internal cavity of the rotating rod. Both ends of one rotating block are rotatably connected to the two second fixed plates on the surface of the lifting slide bar through a rotating shaft, and both ends of the other rotating block are rotatably connected to each other through a rotating shaft and the two second fixed plates on the inner wall surface of the cavity.

[0014] Preferably, a plurality of rubber columns are installed at a position outside the lifting slide rod at the lower end of the limiting plate, and the lower ends of the rubber columns are in contact with but not connected to the upper end of the fixed ring.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. The feeding device of the injection molding machine drives the driving gear to rotate through the driving motor, and the driving gear drives the driven gear ring to rotate, and the driven gear ring drives the connecting cross bar and the driven telescopic rod to rotate, and the driven telescopic rod drives the rotating rod to rotate, and the rotating rod drives the two screws to rotate synchronously. The symmetrical telescopic components at both ends of the rotating rod will be unfolded under the action of centrifugal force, and drive the stirring component to contact the inner wall of the feed hopper and rotate continuously. The plastic particles inside the feed hopper will be stirred by the two stirring components and enter the inside of the screw. Under the rotation of the screw, the plastic particles will enter the inside of the feed pipe through the through hole, and be transported inside the feed pipe, and finally be hot-melted by the heating component. By providing a continuously rotating stirring component and a screw connected to the feed pipe, the plastic particles inside the feed hopper can be continuously fed into the inside of the feed pipe, which can effectively avoid the accumulation of plastic particles at the outlet of the feed hopper and ensure the efficiency and continuity of material transportation.

[0017] 2. The feeding device of the injection molding machine is provided with a lifting slide bar inside the rotating rod. When the rotating rod rotates, the lifting slide bar will perform random lifting and lowering movements, thereby driving the screw to perform random lifting and lowering movements. At the same time, the screw will rotate, effectively disrupting the accumulation of plastic particles inside the feed hopper. Under the action of the limit plate, the screw will have a minimum descending height, so that the screw is connected to the feed pipe and does not contact the internal structure of the feed pipe, which can effectively increase the feeding efficiency of the plastic particles inside the feed hopper.

[0018] 3. The feeding device of the injection molding machine is provided with a driven telescopic rod at the lower end of the connecting cross bar. The driven telescopic rod is a driven telescopic rod. When the connecting cross bar is placed above the feed hopper, the driven telescopic rod will naturally drop down and drive the rotating rod and the two telescopic components to drop down. The two telescopic components will expand outwards under the centrifugal force generated by the rotation of the rotating rod and drive the stirring component to contact the inner wall of the feed hopper, so that the size of the device can be changed according to the feed hopper to be suitable for most feed hoppers of different sizes, thereby increasing the popularity of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 It is a schematic diagram of the structure of the material delivery pipeline of the present invention;

[0021] Figure 3 It is a plan view of the internal structure of the feed hopper of the present invention;

[0022] Figure 4 It is a schematic structural diagram of the driving gear and the driven gear ring of the present invention;

[0023] Figure 5It is a structural schematic diagram of the driven telescopic rod and the rotating rod of the present invention;

[0024] Figure 6 It is a schematic diagram of the structure of the telescopic component and the stirring component of the present invention;

[0025] Figure 7 It is a plan view of the internal structure of the rotating rod of the present invention;

[0026] Figure 8 It is a structural schematic diagram of the spring telescopic rod of the present invention.

[0027] In the figure: 1. Injection molding machine body; 2. Feed hopper; 3. Pipe protection shell; 4. Support plate; 5. Heating component; 6. Feed pipeline; 7. Driven gear ring; 8. Connecting cross bar; 9. Rotating rod; 10. Screw; 11. Motor protection shell; 12. Driving motor; 13. Driving gear; 14. Reinforcement plate; 15. Driven telescopic rod; 16. Closed ring; 17. Telescopic component; 1701. First sleeve; 1702. Sliding rod; 1703. Second sleeve; 18. Stirring component; 1801. Fixed rotating rod; 1802. Soft pad; 19. Arc groove; 20. First fixed plate; 21. Lifting slide rod; 22. Fixed ring; 23. Limiting plate; 24. Rubber column; 25. Spring telescopic rod; 26. Second fixed plate; 27. Rotating block; 28. Transparent glass frame. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0030] like Figures 1 to 8As shown, the feeding device of the injection molding machine in this embodiment includes an injection molding machine body 1, a feeding pipeline 6 is arranged inside the injection molding machine body 1, and a plurality of heating components 5 are arranged outside the feeding pipeline 6. The feeding pipeline 6 and the heating components 5 are existing structures inside the injection molding machine body 1, which are mainly used to transport plastic particles and heat and melt the plastic particles. A feeding hopper 2 is installed on the outside of the feeding pipeline 6 through a through hole, and a through hole is opened at the upper end of the feeding pipeline 6. The feeding hopper 2 is connected to the feeding pipeline 6 through the through hole, and the plastic particles enter the inside of the feeding pipeline 6 through the feeding hopper 2. A driving electric motor is installed outside the feeding hopper 2. The drive motor 12 is a common servo motor and is connected to the outer surface of the feed hopper 2 by bolts. The upper end of the drive motor 12 is connected to a driving gear 13 through a rotating shaft. The outer surface of the feed hopper 2 is located above the drive motor 12 and is rotatably connected to a driven gear ring 7 meshing with the driving gear 13. The driven gear ring 7 is rotatably connected to the surface of the feed hopper 2 in a detachable connection relationship. The driving motor 12 drives the driving gear 13 to rotate, and the driving gear 13 drives the driven gear ring 7 to rotate. It should be noted that the driving gear 13 and the driven gear ring 7, a rotating protective shell can be set to avoid external interference. The upper end of the driven gear ring 7 is located at the opening of the feed hopper 2 and is equipped with a connecting cross bar 8. The connecting cross bar 8 is in contact with the upper end of the feed hopper 2. The driven gear ring 7 can be mounted on the upper part of the feed hopper 2 through the connecting cross bar 8. A driven telescopic rod 15 is installed at the center of the lower end of the connecting cross bar 8. A rotating rod 9 is installed at the lower end of the driven telescopic rod 15. The connecting cross bar 8, the driven telescopic rod 15 and the rotating rod 9 will rotate synchronously under the action of the driven gear ring 7. The lower end of the rotating rod 9 is equipped with a through-hole that enters the feed pipe 6 The internal screw 10 and the left and right sides of the rotating rod 9 are symmetrically connected to the telescopic assembly 17, and the other end of the telescopic assembly 17 is installed with a stirring assembly 18 that contacts the inner wall of the feed hopper 2. The rotating rod 9 will drive the screw 10, the telescopic assembly 17 and the stirring assembly 18 to rotate synchronously inside the feed hopper 2. By setting up a continuously rotating stirring assembly 18 and a screw 10 connected to the feed pipe 6, the plastic particles inside the feeding hopper can be continuously fed into the inside of the feed pipe 6, which can effectively avoid the accumulation of plastic particles at the outlet of the feed hopper 2, thereby ensuring the efficiency and continuity of material transportation.

[0031] Specifically, a support plate 4 is installed at the upper end of the through hole of the feed pipe 6, the feed hopper 2 passes through the support plate 4 and is communicated with the through hole, a motor protection shell 11 connected to the feed hopper 2 is installed on the outside of the drive motor 12, and two reinforcement plates 14 are installed at the lower end of the motor protection shell 11, and the lower end of the reinforcement plate 14 is connected to the upper end of the support plate 4, the support plate 4 is installed at the connection between the feed hopper 2 and the feed pipe 6, and is fixedly installed between the feed pipe 6, and the internal drive motor 12 is protected by setting the motor protection shell 11, and two reinforcement plates 14 connect the support plate 4 and the motor protection shell 11, which can enhance the connection strength between the motor protection shell 11 and the support plate 4, thereby enhancing the stability of the motor protection shell 11.

[0032] Furthermore, a pipe protection shell 3 is installed on the outside of the feed pipe 6, and a transparent glass frame 28 is provided on the lower surface of the feed hopper 2. The pipe protection shell 3 is used to protect the feed pipe 6 and reduce the contact between the feed pipe 6 and the outside world. Through the transparent glass frame 28, the user can observe the material situation inside the feed hopper 2. When the material is less, plastic particles can be added.

[0033] Furthermore, the telescopic assembly 17 includes a first sleeve 1701, a sliding rod 1702 and a second sleeve 1703. An arc groove 19 is provided on both symmetrical sides of the rotating rod 9. The second sleeve 1703 is rotatably connected to the inside of the arc groove 19 through a rotating shaft. Two first fixed plates 20 are symmetrically installed at one end of the stirring assembly 18. Both ends of the first sleeve 1701 are rotatably connected through a rotating shaft and a first fixed plate 20. The sliding rod 1702 is slidably sleeved between the first sleeve 1701 and the second sleeve 1703. The second sleeve 1703 is rotatably connected to the arc groove 19 through two symmetrically arranged rotating shafts, so that the second sleeve 1703 can rotate at a certain angle inside the arc groove 19. Under the action of centrifugal force, the first sleeve 1701 and the sliding rod 1702 will be gradually thrown out, and drive the stirring. The mixing assembly 18 is in contact with the feed hopper 2, and the mixing assembly 18 is rotatably connected between the first fixed plate 20 and the first sleeve 1701, so that the mixing assembly 18 can be rotated at a certain angle to adapt to the inner wall of the feed hopper 2 at different angles. By arranging a driven telescopic rod 15 at the lower end of the connecting cross bar 8, the driven telescopic rod 15 is a driven telescopic rod 15. When the connecting cross bar 8 is placed above the feed hopper 2, the driven telescopic rod 15 will naturally descend and drive the rotating rod 9 and the two telescopic assemblies 17 to descend. The two telescopic assemblies 17 will expand outward under the centrifugal force generated by the rotation of the rotating rod 9, and drive the mixing assembly 18 to contact the inner wall of the feed hopper 2, so that the size of the device can be changed according to the feed hopper 2 to adapt to most feed hoppers 2 of different sizes, thereby increasing the popularity of the device.

[0034] Furthermore, the stirring assembly 18 includes a fixed rotating rod 1801 and a soft pad 1802. One end of the fixed rotating rod 1801 is rotatably connected to the telescopic assembly 17 through the first fixed plate 20, and the other end of the fixed rotating rod 1801 is installed with a soft pad 1802. The two fixed rotating rods 1801 will rotate synchronously with the rotating rod 9. The soft pad 1802 is made of rubber and will not damage the inner wall of the feed hopper 2 when it comes into contact with the feed hopper 2.

[0035] Furthermore, a cavity is provided inside the rotating rod 9, and a fixed ring 22 is fixedly installed inside the cavity. A lifting slide bar 21 is slidably connected inside the fixed ring 22. The lower end of the lifting slide bar 21 is connected to the upper end of the screw rod 10. A limiting plate 23 is provided at the position where the upper end of the lifting slide bar 21 is located above the fixed ring 22. The fixed ring 22 is cylindrical and has a circular through hole inside. The lifting slide bar 21 is slidably connected inside the through hole. When the rotating rod 9 rotates, the lifting slide bar 21 will lift and slide inside the through hole and drive the screw rod 10 to move synchronously. By providing the limiting plate 23, the lifting slide bar 21 can be prevented from detaching from the inside of the fixed ring 22.

[0036] Furthermore, a closed ring 16 is installed at the opening of the lower end of the cavity, and the lifting slide rod 21 and the closed ring 16 are slidably connected. The cavity opened inside the rotating rod 9 can be closed by the closed ring 16, thereby preventing external plastic particles from entering the interior of the cavity. The vertical thickness of the closed ring 16 is smaller than the vertical thickness of the fixed ring 22.

[0037] Furthermore, two spring telescopic rods 25 are symmetrically installed between the lifting slide bar 21 and the inner wall of the cavity, and a rotating block 27 is installed at both ends of the spring telescopic rod 25. Two second fixing plates 26 are installed symmetrically on both sides of the surface of the lifting slide bar 21. Two second fixing plates 26 are symmetrically installed on the inner wall surface of the cavity inside the rotating rod 9. Both ends of one rotating block 27 are rotatably connected to the two second fixing plates 26 on the surface of the lifting slide bar 21 through a rotating shaft, and both ends of the other rotating block 27 are rotatably connected to the two second fixing plates 26 on the surface of the inner wall of the cavity through a rotating shaft. They are rotatably connected to each other, and the spring telescopic rod 25 is arranged at a position between the fixed ring 22 and the closed ring 16. Rotating blocks 27 are arranged at both ends of the spring telescopic rod 25. The two rotating blocks 27 are rotatably connected through a rotating shaft and two second fixed plates 26, and are respectively connected to the inner wall of the cavity and the surface of the lifting slide bar 21 through the second fixed plates 26. When the lifting slide bar 21 is lifted and moved, the two spring telescopic rods 25 will rotate synchronously. By setting two spring telescopic rods 25, the horizontal stability of the lifting slide bar 21 can be enhanced.

[0038] Furthermore, a plurality of rubber columns 24 are installed at the lower end of the limit plate 23 outside the lifting slide bar 21. The lower end of the rubber column 24 is in contact with the upper end of the fixed ring 22 but not connected. During the lifting and lowering movement of the lifting slide bar 21, the limit plate 23 will be driven to move synchronously. The plurality of rubber columns 24 at the lower end of the limit plate 23 will continue to contact and separate from the upper end of the fixed ring 22. The rubber columns 24 can prevent the limit plate 23 from directly contacting the fixed ring 22.

[0039] The method of using the present embodiment is as follows: the driving motor 12 drives the driving gear 13 to rotate, the driving gear 13 drives the driven gear ring 7 to rotate, the driven gear ring 7 drives the connecting cross bar 8 and the driven telescopic rod 15 to rotate, the driven telescopic rod 15 drives the rotating rod 9 to rotate, the rotating rod 9 drives the two screws 10 to rotate synchronously, the telescopic components 17 symmetrical at both ends of the rotating rod 9 will be unfolded under the action of centrifugal force, and drive the stirring component 18 to contact the inner wall of the feed hopper 2 and rotate continuously, the plastic particles inside the feed hopper 2 will be stirred by the two stirring components 18 and enter the inside of the screw 10, under the rotation of the screw 10, the plastic particles will enter the inside of the feed pipe 6 through the through hole, and be transported inside the feed pipe 6, and finally be heat-melted by the heating component 5, by providing the continuously rotating stirring component 18 and the screw 10 communicating with the feed pipe 6, the plastic particles inside the feed hopper can be continuously fed into the inside of the feed pipe 6, which can effectively avoid the accumulation of plastic particles at the outlet of the feed hopper 2, and ensure the efficiency and continuity of material transportation.

[0040] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A feeding device for an injection molding machine, comprising an injection molding machine body (1), wherein a feeding pipeline (6) is arranged inside the injection molding machine body (1), and a plurality of heating components (5) are arranged outside the feeding pipeline (6), characterized in that: A feed hopper (2) is installed on the outside of the conveying pipeline (6) through a through hole, and a driving motor (12) is installed on the outside of the feed hopper (2). The upper end of the driving motor (12) is connected to a driving gear (13) through a rotating shaft. The outer surface of the feed hopper (2) is located above the driving motor (12) and is rotatably connected to a driven gear ring (7) meshing with the driving gear (13). The upper end of the driven gear ring (7) is located at the opening of the feed hopper (2) and is installed with a connecting gear (13). A connecting cross bar (8) is provided, wherein a driven telescopic rod (15) is installed at the center position of the lower end of the connecting cross bar (8), a rotating rod (9) is installed at the lower end of the driven telescopic rod (15), a screw (10) is installed at the lower end of the rotating rod (9) and enters the interior of the material conveying pipeline (6) through a through hole, and a telescopic assembly (17) is symmetrically rotatably connected to the left and right sides of the rotating rod (9), and a stirring assembly (18) in contact with the inner wall of the feed hopper (2) is installed at the other end of the telescopic assembly (17).

2. The injection molding machine feeding device according to claim 1, characterized in that: A support plate (4) is installed at the upper end of the through hole of the conveying pipeline (6), the feed hopper (2) passes through the support plate (4) and is in communication with the through hole, a motor protection shell (11) connected to the feed hopper (2) is installed on the outside of the driving motor (12), and two reinforcement plates (14) are installed at the lower end of the motor protection shell (11), and the lower end of the reinforcement plate (14) is connected to the upper end of the support plate (4).

3. The injection molding machine feeding device according to claim 1, characterized in that: A pipeline protection shell (3) is installed on the outside of the material conveying pipeline (6), and a transparent glass frame (28) is provided on the lower surface of the feed hopper (2).

4. The injection molding machine feeding device according to claim 1, characterized in that: The telescopic assembly (17) comprises a first sleeve (1701), a sliding rod (1702) and a second sleeve (1703); an arc groove (19) is provided on both symmetrical sides of the rotating rod (9); the second sleeve (1703) is rotatably connected to the inside of the arc groove (19) via a rotating shaft; two first fixed plates (20) are symmetrically installed at one end of the stirring assembly (18); both ends of the first sleeve (1701) are rotatably connected to the first fixed plate (20) via a rotating shaft; and a sliding rod (1702) is slidably provided between the first sleeve (1701) and the second sleeve (1703).

5. The injection molding machine feeding device according to claim 4, characterized in that: The stirring assembly (18) comprises a fixed rotating rod (1801) and a soft pad (1802); one end of the fixed rotating rod (1801) is rotatably connected to the telescopic assembly (17) via a first fixed plate (20); and the other end of the fixed rotating rod (1801) is provided with a soft pad (1802).

6. The injection molding machine feeding device according to claim 1, characterized in that: A cavity is provided inside the rotating rod (9), a fixed ring (22) is fixedly installed inside the cavity, a lifting slide rod (21) is slidably connected inside the fixed ring (22), the lower end of the lifting slide rod (21) is connected to the upper end of the screw rod (10), and a limit plate (23) is provided at the position where the upper end of the lifting slide rod (21) is located above the fixed ring (22).

7. The injection molding machine feeding device according to claim 6, characterized in that: A closed circular ring (16) is installed at the lower opening of the cavity, and the lifting slide rod (21) and the closed circular ring (16) are slidably connected.

8. The injection molding machine feeding device according to claim 7, characterized in that: Two spring telescopic rods (25) are symmetrically installed between the lifting slide rod (21) and the inner wall of the cavity, and a rotating block (27) is installed at both ends of the spring telescopic rod (25).

9. The injection molding machine feeding device according to claim 8, characterized in that: Two second fixing plates (26) are symmetrically installed on both sides of the surface of the lifting slide bar (21), and two second fixing plates (26) are symmetrically installed on the inner wall surface of the internal cavity of the rotating rod (9). Both ends of one rotating block (27) are rotatably connected to the two second fixing plates (26) on the surface of the lifting slide bar (21) through a rotating shaft, and both ends of the other rotating block (27) are rotatably connected to each other through a rotating shaft and the two second fixing plates (26) on the inner wall surface of the cavity.

10. The injection molding machine feeding device according to claim 9, characterized in that: A plurality of rubber columns (24) are installed at the lower end of the limit plate (23) located outside the lifting slide rod (21), and the lower end of the rubber column (24) is in contact with the upper end of the fixed ring (22) but is not connected.

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