Batch feeding device of injection molding machine

Abstract

The utility model discloses a batch feeding device of an injection molding machine, which comprises a main hopper, a sub-hopper and a feeding hopper, the bottom of the sub-hopper is provided with a semicircular feed port communicated with the sub-hopper, the bottom of the sub-hopper is provided with an opening, the bottom of the main hopper is rotatably provided with a rotary cover plate, the feeding hopper is internally provided with a partition plate, and the partition plate is provided with an opening. After plastic raw materials are uniformly loaded into the main hopper, the rotating shaft rotates to drive the partition plate to ascend to close the bottoms of the branch hoppers, and meanwhile, after a period of time delay, the rotating cover plate is poked to be opened through the poking rod, so that the raw materials in the main hopper fall into the branch hoppers; when the pressure sensor on the partition plate detects a certain mass of raw materials, the rotating shaft rotates reversely to close the rotating cover plate and open the partition plate after a certain time delay, so that the raw materials in the material distributing hopper fall into the feeding hopper, and finally, the quantitative raw materials are fed into the injection molding machine through the feeding port.

Description

Technical Field

[0001] This utility model relates to the field of injection molding machine devices, and in particular to a batch feeding device for injection molding machines. Background Technology

[0002] Injection molding machines can use plastic molds to make various shapes of plastic products from thermoplastic or thermosetting plastics. When adding plastic raw materials to the injection molding machine, it is necessary to pay attention to the amount of material added to the injection molding machine for each batch. Too little material will cause too many cavities in the injection molding machine barrel, resulting in voids in the product. If too much material is added, it will cause machine malfunction. Therefore, it is necessary to ensure that the amount of material added to each batch is just right when feeding materials in batches. Utility Model Content

[0003] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a batch feeding device for injection molding machines, which solves the current pain points in this field.

[0004] The above-mentioned technical objective of this utility model is achieved through the following technical solution:

[0005] A batch feeding device for an injection molding machine includes a main hopper, a distribution hopper, and a feeding hopper. The main hopper, the distribution hopper, and the feeding hopper are fixedly connected in sequence from top to bottom. The bottom of the main hopper is provided with a semi-circular inlet communicating with the distribution hopper. The bottom of the distribution hopper is provided with an opening. A rotating cover plate is rotatably installed at the bottom of the main hopper, and the rotating cover plate can cover the inlet. A partition plate is provided in the feeding hopper, and the partition plate can cover the bottom opening of the distribution hopper. A guide rod is fixedly installed at the bottom of the distribution hopper. The partition plate is vertically slidably installed on the guide rod. A pressure sensor is provided on the partition plate.

[0006] To further explain, a rotating shaft is rotatably installed in the distributing hopper, and the lower end of the rotating shaft is rotatably installed at the bottom of the feeding hopper and connected to a motor that is fixedly installed at the bottom of the feeding hopper.

[0007] To further explain, a lever is fixedly installed at the top of the rotating shaft, and a paddle is fixedly installed at the bottom of the rotating cover. Rotating the lever can move the paddle, thereby driving the rotating cover to rotate.

[0008] To further explain, a torsion spring is provided at the rotating part of the rotating cover plate.

[0009] To further explain, a threaded sleeve is vertically slidably installed in the middle of the partition, a threaded section is provided on the rotating shaft, the threaded sleeve is threadedly installed on the threaded section, and a top pressure spring is connected between the partition and the bottom end of the threaded sleeve.

[0010] To further explain, a pressure plate is mounted on the pressure sensor, and the pressure plate is fitted onto the rotating shaft.

[0011] In summary, the advantages of this utility model compared to the prior art are as follows: After the plastic raw materials are uniformly loaded into the main hopper, the rotating shaft rotates and drives the partition to rise and close the bottom of the distribution hopper. At the same time, after a certain delay, the rotating cover is opened by the lever, allowing the raw materials in the main hopper to fall into the distribution hopper. When the pressure sensor on the partition detects a certain amount of raw materials, the rotating shaft reverses to close the rotating cover and opens the partition after a certain delay, allowing the raw materials in the distribution hopper to fall into the feeding hopper. Finally, a fixed amount of raw materials is fed into the injection molding machine through the feeding port. Attached Figure Description

[0012] The above and other objects, features, and advantages of the present invention will become readily apparent from the following detailed description of exemplary embodiments, taken in conjunction with the accompanying drawings. Several embodiments of the present invention are illustrated in the drawings by way of example and not limitation, in which:

[0013] Figure 1 This is a schematic diagram of a batch feeding device for an injection molding machine.

[0014] Explanation of reference numerals in the attached drawings: 10. Main hopper; 11. Distribution hopper; 12. Feed hopper; 13. Feed inlet; 14. Rotating cover plate; 15. Paddle; 16. Rotating shaft; 17. Paddle lever; 18. Motor; 19. Threaded section; 20. Threaded sleeve; 21. Partition plate; 22. Guide rod; 23. Pressure plate; 24. Pressure sensor; 25. Feed port; 26. Top pressure spring. Detailed Implementation

[0015] The utility model will be further described in detail below with reference to the accompanying drawings.

[0016] A batch feeding device for an injection molding machine includes a main hopper 10, a distribution hopper 11, and a feeding hopper 12. The main hopper 10, the distribution hopper 11, and the feeding hopper 12 are fixedly connected from top to bottom. The bottom of the main hopper 10 is provided with a semi-circular inlet 13 communicating with the distribution hopper 11. The bottom of the distribution hopper 11 is provided with an opening. The bottom of the feeding hopper 12 is inclined, and a feeding port 25 is provided at the bottom of the inclined surface. A rotating cover plate 14 is rotatably mounted on the bottom of the main hopper 10. The rotating cover plate 14 can cover the inlet 13. A torsion spring is provided at the rotating part of the rotating cover plate 14. The distribution hopper 10... A rotating shaft 16 is rotatably mounted in the 1-section. The lower end of the rotating shaft 16 is rotatably mounted at the bottom of the feeding hopper 12 and connected to a motor 18 fixedly mounted at the bottom of the feeding hopper 12. A lever 17 is fixedly mounted at the top of the rotating shaft 16, and a lever 15 is fixedly mounted at the bottom of the rotating cover 14. The rotation of the lever 17 can move the lever 15, thereby driving the rotating cover 14 to rotate. When the lever 17 starts to rotate, it moves away from the lever 15. After the lever 17 has rotated one revolution, it pushes the lever 15 from the other side, thereby opening the rotating cover 14.

[0017] The feeding hopper 12 is provided with a partition 21, which can cover the bottom opening of the distributing hopper 11. A guide rod 22 is fixedly installed at the bottom of the distributing hopper 11. The partition 21 is vertically slidably installed on the guide rod 22. A threaded sleeve 20 is vertically slidably installed in the middle of the partition 21. A top pressure spring 26 is connected between the bottom end of the partition 21 and the threaded sleeve 20. A threaded section 19 is provided on the rotating shaft 16. The threaded sleeve 20 is threadedly installed on the threaded section 19. The rotation of the rotating shaft 16 can drive the partition 21 to rise and fall through the threaded connection between the threaded section 19 and the threaded sleeve 20. After the rotating shaft 16 rotates one revolution, the opening of the partition 21 is closed. Continued rotation can press the partition 21 tightly through the top pressure spring 26. A pressure sensor 24 is provided on the partition 21. A pressure plate 23 is installed on the pressure sensor 24. The pressure plate 23 is fitted onto the rotating shaft 16.

[0018] When the rotating shaft 16 rotates, the threaded connection between the threaded section 19 and the threaded sleeve 20 causes the partition plate 21 to rise, thereby covering the bottom opening of the distribution hopper 11. At the same time, the lever 17 rotates and pushes the lever 15 after one rotation, thereby opening the rotating cover plate 14 and allowing the raw material in the main hopper 10 to fall into the distribution hopper 11. When the pressure sensor 24 detects a sufficient weight of raw material, the rotating shaft 16 rotates in the opposite direction. The rotating cover plate 14 rotates with the lever 17 under the action of the torsion spring to reset and close the feed port 13. At the same time, the rotating shaft 16 causes the partition plate 21 to fall down through the threaded connection between the threaded section 19 and the threaded sleeve 20, blocking the bottom opening of the distribution hopper 11, so that the material in the distribution hopper 11 enters the feeding hopper 12 and enters the feeding port 25 along the slope and is sent into the injection molding machine.

[0019] The above description is merely an exemplary embodiment of the present utility model and is not intended to limit the scope of protection of the present utility model. The scope of protection of the present utility model is determined by the appended claims.

Claims

1. A batch feeding device for an injection molding machine, characterized in that: The hopper includes a main hopper (10), a distribution hopper (11), and a feeding hopper (12). The main hopper (10), the distribution hopper (11), and the feeding hopper (12) are fixedly connected from top to bottom. The bottom of the main hopper (10) is provided with a semi-circular feed inlet (13) that communicates with the distribution hopper (11). The bottom of the distribution hopper (11) is provided with an opening. The bottom of the main hopper (10) is rotatably mounted with a rotating cover plate (14) that can cover the feed inlet (13). The feeding hopper (12) is provided with a partition plate (21) that can cover the bottom opening of the distribution hopper (11). The bottom of the distribution hopper (11) is fixedly mounted with a guide rod (22). The partition plate (21) is vertically slidably mounted on the guide rod (22). The partition plate (21) is provided with a pressure sensor (24).

2. The batch feeding device for an injection molding machine according to claim 1, characterized in that: A rotating shaft (16) is rotatably installed in the distributing hopper (11). The lower end of the rotating shaft (16) is rotatably installed at the bottom of the feeding hopper (12) and connected to a motor (18) fixedly installed at the bottom of the feeding hopper (12).

3. The batch feeding device for an injection molding machine according to claim 2, characterized in that: A lever (17) is fixedly installed on the top of the rotating shaft (16), and a paddle (15) is fixedly installed on the bottom of the rotating cover plate (14). The lever (17) can rotate to move the paddle (15), thereby driving the rotating cover plate (14) to rotate.

4. The batch feeding device for an injection molding machine according to claim 3, characterized in that: A torsion spring is provided at the rotating part of the rotating cover plate (14).

5. A batch feeding device for an injection molding machine according to claim 2 or 4, characterized in that: A threaded sleeve (20) is vertically slidably installed in the middle of the partition (21), and a threaded section (19) is provided on the rotating shaft (16). The threaded sleeve (20) is threadedly installed on the threaded section (19), and a top pressure spring (26) is connected between the partition (21) and the bottom end of the threaded sleeve (20).

6. A batch feeding device for an injection molding machine according to claim 2, characterized in that: A pressure plate (23) is mounted on the pressure sensor (24), and the pressure plate (23) is fitted onto the rotating shaft (16).

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