Feeding error compensation device of injection molding machine

Abstract

The utility model discloses a feeding error compensation device of an injection molding machine, which comprises a mixing drum, a plurality of feed ports are circularly distributed at the upper end of the mixing drum at equal intervals in a penetrating manner, a plurality of measuring cylinders are circularly distributed on the upper surface of a fixing ring at equal intervals and are fixedly connected with the upper surface of the fixing ring, and a driving mechanism for driving a rotating ring to rotate is arranged at the upper end of the rotating ring. One end of each connecting rod is hinged to a connecting frame, and each connecting frame is provided with a shielding mechanism used for shielding the lower end of the measuring cylinder; according to the utility model, when the blanking amount of one or more materials is found to have errors after the feeding is finished, the materials with missing errors can be directly and conveniently subjected to additional feeding and quantitative measurement through the measuring cylinder, so that the materials with missing errors can be conveniently subjected to compensatory feeding; the defect that in the prior art, quantitative measurement on materials with missing errors is not convenient, and error compensation feeding is not convenient is overcome.

Description

Technical Field

[0001] This utility model relates to the technical field of injection molding machines, specifically to a feeding error compensation device for injection molding machines. Background Technology

[0002] The feeding device is one of the core pieces of equipment in the injection molding process. Its function is to accurately and stably deliver solid or semi-solid raw materials (such as mixtures of plastic granules, metal powders and binders) into the barrel of the injection molding machine, providing material support for the subsequent melting, plasticizing and injection molding processes.

[0003] For example, the existing publication number CN221104472U discloses a timed and quantitative feeding device, including a storage box and a drying component. The storage box is a one-piece steel structure, and a feeding hopper is installed on the top of the storage box. The drying component is located inside the storage box and includes a servo motor, a connecting shaft, a stirring rod assembly, a blower, and a rigid heating tube. The servo motor is located on the front surface of the storage box, and the output end of the servo motor is connected to the connecting shaft via a coupling. A stirring rod assembly is installed on the outer surface of the connecting shaft, and five sets of stirring rods are evenly arranged. A blower is installed on the upper left surface of the storage box, and two sets of blowers are symmetrically arranged. This timed and quantitative feeding device allows for the timely and quantitative feeding of feed through the feeding component, eliminating the need for manual feeding. The drying component prevents the feed from getting damp and avoids feed clumping and clogging.

[0004] However, the following problems were found in the implementation of the relevant technology: The feeding device can quantitatively dispense materials, allowing for the quantitative dispensing of multiple materials. Dispensing multiple materials usually requires adherence to specific ratios and quantities. However, if an error is found in the dispensing quantity of one or more materials after feeding, additional compensatory feeding is required. Since the dispensing quantity of the feeding device is pre-set, it is inconvenient to quantitatively measure materials with missing quantities, thus hindering error compensation feeding. Therefore, we propose a feeding error compensation device for injection molding machines. Summary of the Invention

[0005] To address the shortcomings of existing technologies that make it difficult to quantitatively measure materials with missing or incorrect parameters, thus hindering error-compensating feeding, this invention provides a feeding error compensation device for injection molding machines.

[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0007] This utility model discloses a feeding error compensation device for an injection molding machine, comprising a mixing drum. The upper end of the mixing drum has several feed inlets arranged in a circular pattern at equal intervals. Several fixed columns are fixedly connected to the upper end of the mixing drum. Fixed rings are fixedly connected to the upper ends of the fixed columns. Several measuring cylinders are fixedly connected to the upper surface of the fixed rings in a circular pattern at equal intervals, and the measuring cylinders are aligned with the feed inlets. A rotating ring is rotatably connected to the upper end of the mixing drum. A driving mechanism for rotating the rotating ring is provided at the upper end of the rotating ring. Several connecting rods are hinged circumferentially at equal intervals on the outer wall of the rotating ring. One end of each connecting rod is hinged to a connecting frame. The lower ends of each connecting frame are slidably mounted on the upper end of the mixing drum via a linear sliding mechanism. A blocking mechanism for blocking the lower ends of the measuring cylinders is provided on each connecting frame.

[0008] As a preferred technical solution of this utility model, the driving mechanism includes a mounting frame, which is fixedly connected to the outer wall of the stirring drum. A first servo motor is fixedly connected to the mounting frame, and a first rotating shaft is fixedly connected to the output end of the first servo motor. A transmission component is provided between one end of the first rotating shaft and the upper end of the rotating ring.

[0009] As a preferred embodiment of the present invention, the transmission component includes an annular surface gear and a gear. The annular surface gear is fixedly connected to the upper end of the rotating ring, and the gear is fixedly connected to one end of the first rotating shaft, and the gear meshes with the annular surface gear.

[0010] As a preferred embodiment of the present invention, the linear sliding mechanism includes a groove and a slider. The groove is formed at the upper end of the stirring drum, and the slider is fixedly connected to the lower end of the connecting frame.

[0011] As a preferred embodiment of the present invention, the slide groove is a T-shaped groove, the slider is a T-shaped structure, and the slider is slidably disposed within the slide groove.

[0012] As a preferred technical solution of this utility model, the blocking mechanism includes a second rotating shaft and a second servo motor. The second rotating shaft is rotatably connected to the connecting frame, and the second servo motor is fixedly connected to the upper end of the connecting frame. The output end of the second servo motor is fixedly connected to the upper end of the second rotating shaft. A connecting plate is fixedly connected to the side wall of the second rotating shaft, and a baffle is fixedly connected to one end of the connecting plate.

[0013] As a preferred embodiment of this utility model, the baffle has a circular structure.

[0014] The beneficial effects of this utility model are:

[0015] 1. The feeding error compensation device of this injection molding machine first places various materials to be fed into several measuring cylinders. The measuring cylinders measure the materials according to the required proportions and quantities. After the materials are measured and proportioned, a drive mechanism drives a rotating ring to rotate. During rotation, the rotating ring pulls open several blocking mechanisms via connecting rods, allowing the materials in the measuring cylinders to fall into the mixing drum through their corresponding feed inlets for mixing. This facilitates quantitative feeding of various materials. Furthermore, if an error is found in the feeding quantity of one or more materials after feeding, the measuring cylinders can be used to directly and conveniently add and quantitatively measure the missing material. Then, the same steps are repeated to add the material from the measuring cylinders back into the mixing drum, thus facilitating compensatory feeding of missing material. This solves the problem of existing technologies where it is inconvenient to quantitatively measure materials with missing errors, thus hindering error-compensating feeding.

[0016] 2. The feeding error compensation device of this injection molding machine firstly involves the rotating ring pulling open several baffles via connecting rods, simultaneously opening several feed ports and allowing material to fall from several measuring cylinders. Secondly, by activating the second servo motor, its output drives the second rotating shaft to rotate, which in turn drives the connecting plate to rotate, causing the baffles to rotate and opening the corresponding feed ports, thus allowing material to fall from the corresponding measuring cylinders. Therefore, the baffle mechanism not only allows for simultaneous material falling from several measuring cylinders but also enables single-cylinder material falling, making it easier to measure and compensate for materials with missing material errors. Attached Figure Description

[0017] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0018] Figure 1 This is a schematic diagram of the overall structure of a feeding error compensation device for an injection molding machine according to the present invention;

[0019] Figure 2 This is a bottom view of the fixed ring and measuring cylinder of the feeding error compensation device for an injection molding machine according to this utility model;

[0020] Figure 3 This is a partial structural schematic diagram of a feeding error compensation device for an injection molding machine according to the present invention;

[0021] Figure 4 This is a schematic diagram of the feed inlet and chute of a feeding error compensation device for an injection molding machine according to this utility model;

[0022] Figure 5 This is a schematic diagram of the shielding mechanism of a feeding error compensation device for an injection molding machine according to this utility model.

[0023] In the diagram: 1. Mixing drum; 2. Feed inlet; 3. Fixed column; 4. Fixed ring; 5. Measuring cylinder; 6. Rotating ring; 7. Drive mechanism; 71. Ring gear; 72. Gear; 73. First rotating shaft; 74. Mounting bracket; 75. First servo motor; 8. Connecting rod; 9. Blocking mechanism; 91. Second rotating shaft; 92. Second servo motor; 93. Connecting plate; 94. Baffle; 10. Connecting frame; 11. Slide groove; 12. Slider. Detailed Implementation

[0024] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0025] Example: Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, this utility model discloses a feeding error compensation device for an injection molding machine, comprising a mixing drum 1. The upper end of the mixing drum 1 has several feed inlets 2 arranged in a circular pattern at equal intervals. Several fixed posts 3 are fixedly connected to the upper end of the mixing drum 1. Fixed rings 4 are fixedly connected to the upper ends of the fixed posts 3. Several measuring cylinders 5 are fixedly connected to the upper surface of the fixed rings 4 in a circular pattern at equal intervals, and the measuring cylinders 5 are aligned with the feed inlets 2. A rotating ring 6 is rotatably connected to the upper end of the mixing drum 1. A driving mechanism 7 for driving the rotating ring 6 to rotate is provided on the upper end of the rotating ring 6. Several connecting rods 8 are hinged circumferentially at equal intervals on the outer wall of the rotating ring 6. One end of each connecting rod 8 is hinged to a connecting frame 10. The lower ends of the connecting frames 10 are slidably mounted on the upper end of the mixing drum 1 via a linear sliding mechanism. A blocking mechanism 9 for blocking the lower ends of the measuring cylinders 5 is provided on each of the connecting frames 10.

[0026] In use, the various materials to be added are first placed into several measuring cylinders 5. The measuring cylinders 5 measure the materials according to the required ratio and quantity. After the materials are measured and proportioned, the drive mechanism 7 drives the rotating ring 6 to rotate. During rotation, the rotating ring 6 pulls open several blocking mechanisms 9 via the connecting rod 8. The materials in the measuring cylinders 5 fall into the mixing drum 1 through the corresponding feed inlet 2 for mixing. This facilitates the quantitative feeding of various materials. Moreover, if an error is found in the amount of one or more materials after feeding, the measuring cylinders 5 can be used to directly and conveniently add and measure the missing material. Then, the material in the measuring cylinders 5 is added back into the mixing drum 1 in the same way. This facilitates the compensatory feeding of missing materials, solving the problem of the inconvenience of quantitative measurement of missing materials and thus the inconvenience of error compensation feeding in the existing technology.

[0027] The drive mechanism 7 includes a mounting frame 74, which is fixedly connected to the outer wall of the mixing drum 1. A first servo motor 75 is fixedly connected to the mounting frame 74. A first rotating shaft 73 is fixedly connected to the output end of the first servo motor 75. A transmission component is provided between one end of the first rotating shaft 73 and the upper end of the rotating ring 6. The transmission component includes a ring-shaped gear 71 and a gear 72. The ring-shaped gear 71 is fixedly connected to the upper end of the rotating ring 6, and the gear 72 is fixedly connected to one end of the first rotating shaft 73. The gear 72 meshes with the ring-shaped gear 71.

[0028] By activating the first servo motor 75, the output of the first servo motor 75 will drive the first rotating shaft 73 to rotate, the first rotating shaft 73 will drive the gear 72 to rotate, the gear 72 will drive the ring gear 71 to rotate, and the ring gear 71 will drive the rotating ring 6 to rotate.

[0029] The linear sliding mechanism includes a slide groove 11 and a slider 12. The slide groove 11 is opened at the upper end of the stirring drum 1, and the slider 12 is fixedly connected to the lower end of the connecting frame 10. The slide groove 11 is a T-shaped groove, the slider 12 is a T-shaped structure, and the slider 12 is slidably arranged in the slide groove 11.

[0030] By adopting a T-shaped design for the slide groove 11 and slider 12, the connecting frame 10 can slide along a straight trajectory, thereby enabling the connecting rod 8 to perform a linear push-pull motion on the connecting frame 10. Moreover, the slider 12 will not detach from the slide groove 11 during its sliding process, thus ensuring the stability of the connecting frame 10 during linear movement.

[0031] The shielding mechanism 9 includes a second rotating shaft 91 and a second servo motor 92. The second rotating shaft 91 is rotatably connected to the connecting frame 10, and the second servo motor 92 is fixedly connected to the upper end of the connecting frame 10. The output end of the second servo motor 92 is fixedly connected to the upper end of the second rotating shaft 91. A connecting plate 93 is fixedly connected to the side wall of the second rotating shaft 91, and a baffle 94 is fixedly connected to one end of the connecting plate 93. The baffle 94 has a circular structure.

[0032] First, as the rotating ring 6 rotates, it pulls open several baffles 94 via connecting rods 8, causing several feed ports 2 to open simultaneously, and several measuring cylinders 5 to discharge material at the same time. Second, by activating the second servo motor 92, the output of the second servo motor 92 drives the second rotating shaft 91 to rotate. The second rotating shaft 91 drives the connecting plate 93 to rotate, which in turn drives the baffles 94 to rotate, opening the corresponding feed ports 2 and causing the corresponding measuring cylinders 5 to discharge material. Therefore, by setting up the blocking mechanism 9, not only can several measuring cylinders 5 discharge material simultaneously, but also single-cylinder material discharge can be achieved, making it more convenient to measure and compensate for materials with missing material errors.

[0033] During operation, various materials are first placed into several measuring cylinders 5. The measuring cylinders 5 measure the materials according to the required proportions and quantities. After the materials are measured and proportioned, the first servo motor 75 is activated. The output of the first servo motor 75 drives the first rotating shaft 73 to rotate. The first rotating shaft 73 drives the gear 72 to rotate, which in turn drives the ring gear 71 to rotate. The ring gear 71 then drives the rotating ring 6 to rotate. During rotation, the rotating ring 6 passes through the connecting rod 8 to... When the baffle 94 is pulled open, the materials in several measuring cylinders 5 will fall into the mixing drum 1 through the corresponding feed inlet 2 for mixing. This makes it convenient to feed multiple materials quantitatively. Moreover, if an error is found in the amount of one or more materials after feeding, the missing material can be added and quantitatively measured directly through the measuring cylinder 5. Then, the material in the measuring cylinder 5 is added back into the mixing drum 1 in the same way, which makes it convenient to compensate for the missing material.

[0034] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A feed error compensation device for an injection molding machine, comprising a stirring cylinder (1), characterized in that, The upper end of the stirring drum (1) is circularly distributed and penetrates through a plurality of feeding ports (2) at equal intervals, a plurality of fixed columns (3) are fixedly connected to the upper end of the stirring drum (1), a plurality of fixed rings (4) are fixedly connected to the upper ends of the fixed columns (3), a plurality of measuring cylinders (5) are fixedly connected to the upper surfaces of the fixed rings (4) at equal intervals in a circular distribution, and a plurality of the measuring cylinders (5) and a plurality of the feeding ports (2) are respectively aligned, a rotating ring (6) is rotatably connected to the upper end of the stirring drum (1), a driving mechanism (7) for driving the rotating ring (6) to rotate is arranged on the upper end of the rotating ring (6), a plurality of connecting rods (8) are hingedly connected to the outer side walls of the rotating ring (6) at equal intervals in a circumferential distribution, a connecting frame (10) is hingedly connected to one end of each of the connecting rods (8), a plurality of the connecting frames (10) are slidably arranged on the upper end of the stirring drum (1) through linear sliding mechanisms, and a shielding mechanism (9) for shielding the lower end of the measuring cylinder (5) is arranged on each of the connecting frames (10).

2. A feed error compensating device for an injection molding machine according to claim 1, wherein The driving mechanism (7) comprises a mounting frame (74) fixedly connected to the outer side wall of the stirring drum (1), a first servo motor (75) fixedly connected to the mounting frame (74), and a first rotating shaft (73) fixedly connected to the output end of the first servo motor (75), and a transmission member is arranged between one end of the first rotating shaft (73) and the upper end of the rotating ring (6).

3. A feed error compensating device for an injection molding machine according to claim 2, wherein The transmission member comprises a ring face gear (71) fixedly connected to the upper end of the rotating ring (6) and a gear (72) fixedly connected to one end of the first rotating shaft (73), and the gear (72) is engaged with the ring face gear (71).

4. The feed error compensating apparatus of an injection molding machine according to claim 1, wherein The linear sliding mechanism comprises a sliding groove (11) arranged on the upper end of the stirring drum (1) and a sliding block (12) fixedly connected to the lower end of the connecting frame (10).

5. An injection molding machine feed error compensation apparatus as defined in claim 4 wherein, The sliding groove (11) is a T-shaped groove, the sliding block (12) is a T-shaped structure, and the sliding block (12) is slidably arranged in the sliding groove (11).

6. The feed error compensating apparatus of an injection molding machine according to claim 1, wherein The shielding mechanism (9) comprises a second rotating shaft (91) rotatably connected to the connecting frame (10), a second servo motor (92) fixedly connected to the upper end of the connecting frame (10), and a connecting plate (93) fixedly connected to the side wall of the second rotating shaft (91), wherein the output end of the second servo motor (92) is fixedly connected to the upper end of the second rotating shaft (91), and a baffle (94) is fixedly connected to one end of the connecting plate (93).

7. A feed error compensating device for an injection molding machine according to claim 6, wherein The baffle (94) is a circular structure.

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