Feeding device on injection molding machine
By designing the feeding mechanism of the rotor, crushing roller and snail on the injection molding machine, the problems of raw materials stuck and unstable feeding in the traditional feeding mechanism are solved, and a more efficient feeding process is achieved.
Patent Information
- Application Number
- CN202420744892.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-11
- Publication Date
- 2025-01-03
- Estimated Expiration
- 2034-04-11
AI Technical Summary
The feeding mechanism of traditional injection molding machines is prone to jam when processing raw materials with too large volumes. Raw materials with too small volumes may lead to unstable feeding and clogging of the barrel, reducing production efficiency.
A feeding mechanism including a rotor, a crushing roller, a motor and a clamping plate is designed. Large raw materials are initially crushed through the crushing roller, and small raw materials are transported in batches using the material transport space of the rotor and a clamping plate to avoid blockage and unstable feeding. .
It effectively avoids the problems of raw materials stuck and unstable feeding, improves the feeding accuracy and production efficiency, and ensures the stable operation of the barrel.
Smart Images
Figure CN222290857U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of injection molding machines, and more specifically, to a feeding device on an injection molding machine. Background Art
[0002] As an important equipment in modern industrial production, injection molding machines are widely used in the manufacturing process of plastic products. The feeding mechanism, as a key component of the injection molding machine, is responsible for accurately and stably conveying plastic raw materials to the barrel of the injection molding machine. It is a key link to ensure the continuous and efficient injection molding production process.
[0003] Traditional feeding mechanisms mostly use mechanical or hydraulic drive methods. Although they meet production needs to a certain extent, during the feeding process, if the raw material is too large, it may get stuck in a certain part of the feeding mechanism and cannot enter the barrel smoothly; and if the raw material is too small, the feeding amount entering the barrel may be unstable due to the excessive conveying speed or excessive amount, thereby reducing the feeding accuracy. In addition, if the feeding speed is too fast or too much, it may clog the barrel and reduce work efficiency. Utility Model Content
[0004] In view of the deficiencies in the background technology, the purpose of the utility model is to provide a feeding device for an injection molding machine.
[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:
[0006] A feeding device on an injection molding machine comprises a mounting frame, on which a hopper, a material guide pipe connected to the hopper, and a feeding mechanism matched with the hopper are mounted, wherein the material guide pipe is connected to a barrel on the injection molding machine.
[0007] The feeding mechanism includes a rotating wheel rotatably connected to the hopper, two crushing rollers rotatably connected to the hopper and placed above the rotating wheel, a first motor mounted on a mounting frame and matched with the rotating wheel, and a second motor mounted on the mounting frame and matched with the two crushing rollers. The rotating wheel is equipped with a plurality of card plates that surround the rotating wheel and are evenly arranged. The card plates are matched with the hopper and are C-shaped. Two adjacent card plates cooperate to form a material transportation space.
[0008] The shaft of the first motor is fixedly connected to the rotating wheel, the shaft of the second motor is fixed with a main gear fixedly connected to a crushing roller, and the other crushing roller is fixed with a slave gear meshing with the main gear.
[0009] It is further configured that the hopper includes a material storage box and a feeding part, the feeding part includes a transition chamber matched with a rotating wheel, the cross-section of the transition chamber is semicircular, the two ends of the transition chamber are respectively connected with the material storage box and the material guide pipe, the crushing roller is rotatably connected in the material storage box, the rotating wheel is rotatably connected with the feeding part, and the rotating wheel is placed in the transition chamber and extends into the material storage box, and the clamping plate matches with the inner wall of the transition chamber.
[0010] It is further configured that the rotating wheel is provided with a plurality of first screw holes surrounding the rotating wheel, a connecting plate is fixed to the clamping plate, a second screw hole matching with the first screw hole is provided on the connecting plate, and the connecting plate is detachably connected to the rotating wheel by connecting the first screw hole and the second screw hole with bolts.
[0011] It is further configured that the material guide pipe is rotatably connected to a stirring paddle placed in the material guide pipe, and a third motor fixedly connected to the stirring paddle is installed on the mounting frame.
[0012] By adopting the above technical scheme, the beneficial effects of the utility model are as follows: during the feeding process, the second motor drives the two crushing rollers through the meshing of the main gear and the slave gear to perform preliminary crushing on the larger raw materials, thereby avoiding the problem that the raw materials with too large a volume may be stuck in the hopper or the guide tube and cannot enter the barrel smoothly; the raw materials with smaller volume fall into the feeding part through the gap between the two crushing rollers and enter the transport space formed by the two adjacent clamping plates on the rotating wheel. When the first motor drives the rotating wheel to rotate, the transport space rotates to the guide tube and enters the guide tube, and the multiple transport spaces formed by the cooperation of two adjacent clamping plates of several clamping plates feed the raw materials into the guide tube in batches to avoid excessive accumulation of raw materials affecting the stability of entering the barrel, thereby avoiding the possibility that the raw materials with too small a volume may enter the barrel due to too fast or too much conveying speed, making the feeding amount unstable and reducing the feeding accuracy, and preventing the feeding speed from being too fast or too much, which may block the barrel and reduce work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 It is a structural schematic diagram of an embodiment of the utility model.
[0014] Figure 2 It is a schematic diagram of the structure of the coordination between the impeller and the hopper.
[0015] Figure 3 It is a schematic diagram of the structure of the cooperation between the second motor and the crushing roller.
[0016] Figure 4 It is a structural schematic diagram of the cooperation between the rotating wheel and the feeding part.
[0017] Figure 5 This is a schematic diagram of the enlarged structure at point A.
[0018] In the figure: mounting frame 1, hopper 2, material guide pipe 3, rotating wheel 4, crushing roller 5, first motor 6, second motor 7, clamping plate 8, material transport space 9, main gear 10, slave gear 11, material storage box 12, material feeding part 13, transition chamber 14, connecting piece 15, first screw hole 16, second screw hole 17, stirring paddle 18, third motor 19. DETAILED DESCRIPTION
[0019] Reference Figures 1 to 5The utility model is further described in detail.
[0020] A feeding device on an injection molding machine comprises a mounting frame 1, on which a hopper 2, a material guide pipe 3 connected to the hopper 2 and a feeding mechanism matched with the hopper 2 are mounted, the material guide pipe 3 is connected to a barrel on the injection molding machine, the feeding mechanism comprises a rotating wheel 4 rotatably connected to the hopper 2, two crushing rollers 5 rotatably connected to the hopper 2 and placed above the rotating wheel 4, a first motor 6 mounted on the mounting frame 1 and matched with the rotating wheel 4, and a second motor 7 mounted on the mounting frame 1 and matched with the two crushing rollers 5.
[0021] The hopper 2 includes a material storage box 12 and a feeding part 13. The feeding part 13 includes a transition chamber 14 that cooperates with the rotating wheel 4. The cross-section of the transition chamber 14 is semicircular. The two ends of the transition chamber 14 are respectively connected to the material storage box 12 and the material guide pipe 3. The rotating wheel 4 is rotatably connected to the feeding part 13, and the rotating wheel 4 is placed in the transition chamber 14 and extends into the material storage box 12. The shaft of the first motor 6 is fixedly connected to the rotating wheel 4. A plurality of card plates 8 that surround the rotating wheel 4 and are evenly arranged are installed on the rotating wheel 4. The card plates 8 are C-shaped, and two adjacent card plates 8 cooperate to form a material transportation space 9. The ends of the card plates 8 do not contact the inner wall of the transition chamber 14 to avoid the collision between the card plates 8 and the transition chamber 14, which affects the rotation of the card plates 8 with the rotating wheel 4. The crushing roller 5 is rotatably connected in the material storage box 12. A main gear 10 fixedly connected to one crushing roller 5 is fixed on the shaft of the second motor 7, and a slave gear 11 meshing with the main gear 10 is fixed on the other crushing roller 5.
[0022] Working principle: During the feeding process, the raw material enters the transition chamber 14 of the feeding part 13 through the storage box 12 of the hopper 2, and then falls into the barrel of the injection molding machine through the guide pipe 3. When the raw material enters the storage box 12, it passes through two crushing rollers 5. The second motor 7 works by meshing the main gear 10 and the slave gear 11 to rotate the two crushing rollers 5. The two rotating crushing rollers 5 cooperate with each other to preliminarily crush the raw material with a larger volume, avoiding the problem that the raw material with too large volume may be stuck in the hopper 2 or the guide pipe 3 and cannot enter the barrel smoothly; the raw material with a smaller volume falls into the material transport space 9 formed by the two adjacent card plates 8 on the rotating wheel 4 through the gap between the two crushing rollers 5. When the first motor 6 works to drive the rotating wheel 4 to rotate, the material transport space 9 containing the raw material The space 9 is transported to the material guide pipe 3 through the transition chamber 14 as the wheel 4 rotates. As the wheel 4 rotates, the multiple material transport spaces 9 formed by the cooperation of each two adjacent card plates 8 of the plurality of card plates 8 receive the materials during the rotation process, so that the raw materials enter the material guide pipe 3 in batches to avoid excessive material entering the material guide pipe 3 causing accumulation and blockage, which prevents the material guide pipe 3 from entering the barrel of the injection molding machine smoothly. The rotation speed of the material transport space 9 is stable to avoid the raw materials entering the material guide pipe 3 too fast, thereby stabilizing the feeding amount of the material transport space 9, thereby avoiding the possibility that the raw materials with too small a volume may enter the barrel due to too fast or too much conveying speed, resulting in unstable feeding amount and reduced feeding accuracy, and preventing the barrel from being blocked by too fast or too much feeding speed and reducing work efficiency.
[0023] The rotating wheel 4 is provided with a plurality of first screw holes 16 surrounding the rotating wheel 4, a connecting piece 15 is fixed on the clamping plate 8, and a second screw hole 17 cooperating with the first screw hole 16 is provided on the connecting piece 15. The connecting piece 15 is detachably connected to the rotating wheel 4 by connecting the first screw hole 16 and the second screw hole 17 with bolts. The detachable connection between the connecting piece 15 and the rotating wheel 4 facilitates the detachable connection between the clamping plate 8 and the rotating wheel 4, thereby facilitating the adjustment of the distance between two adjacent clamping plates 8 as needed, and further adjusting the size of the material transport space 9 to change the feeding amount of the material transport space 9, thereby further avoiding the situation that the feeding amount of raw materials with too small volume entering the barrel is unstable due to excessive conveying, thereby reducing the feeding accuracy.
[0024] The material guide pipe 3 is rotatably connected to a stirring paddle 18 placed inside the material guide pipe 3, and the mounting frame 1 is provided with a third motor 19 fixedly connected to the stirring paddle 18. The third motor 19 drives the stirring paddle 18 to rotate to disturb the raw materials entering the material guide pipe 3, thereby further preventing excessive accumulation of raw materials in the material guide pipe 3 and stabilizing the feeding amount entering the barrel.
[0025] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any common changes and substitutions made by those skilled in the art within the technical solution of the present invention should be included in the protection scope of the present invention.
Claims
1. A feeding device for an injection molding machine, comprising a mounting frame (1), characterized in that: The mounting frame (1) is provided with a hopper (2), a material guide pipe (3) connected to the hopper (2), and a feeding mechanism matched with the hopper (2); the material guide pipe (3) is connected to a barrel on an injection molding machine. The feeding mechanism comprises a rotating wheel (4) rotatably connected to the hopper (2), two crushing rollers (5) rotatably connected to the hopper (2) and arranged above the rotating wheel (4), a first motor (6) mounted on the mounting frame (1) and cooperating with the rotating wheel (4), and a second motor (7) mounted on the mounting frame (1) and cooperating with the two crushing rollers (5). The rotating wheel (4) is provided with a plurality of card plates (8) which surround the rotating wheel (4) and are evenly arranged. The card plates (8) are cooperating with the hopper (2), and the card plates (8) are C-shaped. Two adjacent card plates (8) cooperate to form a material transport space (9). The shaft of the first motor (6) is fixedly connected to the rotating wheel (4), a main gear (10) fixedly connected to one crushing roller (5) is fixedly provided on the shaft of the second motor (7), and a slave gear (11) meshing with the main gear (10) is fixedly provided on the other crushing roller (5).
2. A feeding device on an injection molding machine according to claim 1, characterized in that: The hopper (2) comprises a material storage box (12) and a feeding part (13); the feeding part (13) comprises a transition chamber (14) matched with a rotating wheel (4); the cross section of the transition chamber (14) is semicircular; two ends of the transition chamber (14) are respectively connected with the material storage box (12) and the material guide pipe (3); the crushing roller (5) is rotatably connected in the material storage box (12); the rotating wheel (4) is rotatably connected with the feeding part (13); the rotating wheel (4) is placed in the transition chamber (14) and extends into the material storage box (12); and the clamping plate (8) is matched with the inner wall of the transition chamber (14).
3. A feeding device for an injection molding machine according to claim 2, characterized in that: The rotating wheel (4) is provided with a plurality of first screw holes (16) surrounding the rotating wheel (4); a connecting piece (15) is fixed to the clamping plate (8); the connecting piece (15) is provided with second screw holes (17) matching with the first screw holes (16); the connecting piece (15) is detachably connected to the rotating wheel (4) by connecting the first screw holes (16) and the second screw holes (17) with bolts.
4. A feeding device for an injection molding machine according to claim 3, characterized in that: The material guide pipe (3) is rotatably connected to a stirring paddle (18) disposed inside the material guide pipe (3), and a third motor (19) fixedly connected to the stirring paddle (18) is mounted on the mounting frame (1).