Injection molding machine feeding mechanism with safety protection structure

Abstract

The utility model discloses an injection molding machine feeding mechanism with a safety protection structure, which belongs to the technical field of injection molding machines and comprises a screw conveyor, connecting support rods are mounted at two ends of the top of the outer wall of the screw conveyor, and a melting bin is mounted at one end, far away from the screw conveyor, of each connecting support rod. Concentric-square-shaped positioning grooves are formed in the top of the spiral conveyor and the bottom of the melting bin; a square cylinder is arranged at the bottom of the melting bin, a filter plate is arranged in the square cylinder, and a limiting groove is formed in one side of the filter plate; and a cavity is reserved in the outer wall of the square cylinder. According to the utility model, the square cylinder is arranged between the melting bin and the screw conveyor, and the filtering plate is arranged in the square cylinder, so that raw materials melted by the melting bin can be further filtered by the filtering plate and then enter the screw conveyor, and furthermore, the situation that part of parts which are difficult to melt enters the screw conveyor and damage parts such as an injection molding nozzle is avoided.

Description

Technical Field

[0001] This utility model belongs to the field of injection molding machine technology, specifically an injection molding machine feeding mechanism with a safety protection structure. Background Technology

[0002] Plastic products are widely used in modern daily life and production processes. Among the most common ways to produce plastic products, injection molding machines are used in conjunction with molds. The feeding mechanism of the injection molding machine is one of the components of the injection molding machine. Its main function is to convert the raw material into a molten state and then transport it to the injection nozzle through a screw conveyor or other means, so that the raw material can finally enter the mold through the injection nozzle for molding.

[0003] In existing injection molding machine feeding mechanisms, the raw materials are melted before entering the subsequent equipment. However, in actual operation, due to the limited source of materials, some raw materials may contain parts that cannot be easily melted. These unmelted impurities entering the injection part can easily damage the injection nozzle and cause problems with the final product quality. Utility Model Content

[0004] To overcome the above-mentioned defects, this utility model provides an injection molding machine feeding mechanism with a safety protection structure, which solves the problem that the injection molding machine feeding mechanism can easily allow some non-melting parts to pass through and cause damage to the equipment.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a feeding mechanism for an injection molding machine with a safety protection structure, including a screw conveyor, wherein connecting support rods are installed at both ends of the top of the outer wall of the screw conveyor, and a melting chamber is installed at the end of the connecting support rod away from the screw conveyor; and a U-shaped positioning groove is provided at the top of the screw conveyor and the bottom of the melting chamber.

[0006] The bottom of the melting chamber is provided with a square cylinder, and a filter plate is provided inside the square cylinder. A limiting groove is provided on one side of the filter plate.

[0007] The outer wall of the square tube has a cavity reserved inside. A first threaded rod is provided on one side of the top and bottom of the cavity. A first conical tooth is installed on the end of the first threaded rod near the limiting groove. A connecting movable plate is sleeved on the outside of the first threaded rod. A loop-shaped closing limiting plate is installed on the side of the connecting movable plate near the limiting groove. The loop-shaped closing limiting plate extends through the square tube into the interior of the loop-shaped positioning groove.

[0008] The cavity is equipped with an operating mechanism for driving the first threaded rod to rotate.

[0009] As a further embodiment of this utility model: a spiral-shaped sealing block is pasted inside the spiral-shaped positioning groove, and the height of the spiral-shaped sealing block is less than the depth of the spiral-shaped positioning groove.

[0010] As a further embodiment of this utility model: the connecting movable plate and the U-shaped closed limiting plate are manufactured as a single unit, and the connecting movable plate and the first threaded rod are threadedly connected.

[0011] As a further embodiment of this utility model: the operating mechanism includes an operating shaft, which passes through the cavity on the side away from the limiting groove. A second bevel tooth is installed on the outer side of the operating shaft. A square groove is opened at the end of the operating shaft near the limiting groove, and a square rod is provided inside the square groove. A second threaded rod is installed at the end of the square rod near the limiting groove, and the second threaded rod extends through the square cylinder into the interior of the limiting groove.

[0012] As a further embodiment of this utility model: the second bevel tooth is perpendicular to the first bevel tooth, and the second bevel tooth and the first bevel tooth are meshed together.

[0013] As a further embodiment of this utility model: the second threaded rod and the square cylinder are connected by a thread, and the second threaded rod and the square rod are manufactured as a single piece.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] 1. A square cylinder is installed between the melting chamber and the screw conveyor. A filter plate is installed inside the square cylinder. After the raw material is melted in the melting chamber, it can be further filtered by the filter plate before entering the screw conveyor. This prevents some hard-to-melt parts from entering the screw conveyor and damaging the injection nozzle and other parts, thus achieving a safety protection function.

[0016] 2. The engagement between the second bevel tooth and the first bevel tooth allows the operator to rotate the operating shaft to drive the connecting movable plate and the loop-shaped sealing restriction plate on it to slide into or out of the corresponding loop-shaped positioning groove. This facilitates the disassembly and assembly of the square cylinder and the subsequent collection and cleaning of impurities trapped on the filter plate inside the square cylinder.

[0017] 3. The square cylinder can be completely removed from the screw conveyor and melting chamber. After the square cylinder is removed, the feeding part of the screw conveyor and the discharging part of the melting chamber can be fully exposed, which makes it easier for the staff to clean the residual raw materials on the inner walls of these parts of the melting chamber and screw conveyor, and ensure the smooth flow of raw materials in subsequent use.

[0018] 4. A square rod is installed inside the square groove on the operating shaft, and the second threaded rod on the square rod is threadedly connected to the square cylinder. After the operator disassembles the square cylinder by rotating the operating shaft, the second threaded rod can be rotated out from the corresponding limiting groove. This allows the filter plate to be automatically separated from the square cylinder after disassembly, making it easier for the operator to perform further maintenance on the square cylinder and filter plate or replace the filter plate. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the front sectional view of the present invention;

[0021] Figure 3 This is a utility model Figure 2 A magnified structural diagram at point A;

[0022] Figure 4 This is a utility model Figure 2 A magnified structural diagram at point B;

[0023] Figure 5 This is a top sectional view of the structure of this utility model.

[0024] In the diagram: 1. Screw conveyor; 2. Connecting support rod; 3. Melting chamber; 4. U-shaped positioning groove; 5. U-shaped sealing block; 6. Square cylinder; 7. Filter plate; 8. Cavity; 9. First threaded rod; 10. First conical tooth; 11. Connecting movable plate; 12. U-shaped sealing limiting plate; 13. Operating shaft; 14. Second conical tooth; 15. Square groove; 16. Square rod; 17. Second threaded rod; 18. Limiting groove. Detailed Implementation

[0025] The technical solution of this patent will be further described in detail below with reference to specific embodiments.

[0026] like Figures 1-5 As shown, this utility model provides a technical solution:

[0027] A feeding mechanism for an injection molding machine with a safety protection structure includes a screw conveyor 1. Both ends of the top of the outer wall of the screw conveyor 1 are equipped with connecting support rods 2, and a melting chamber 3 is installed at the end of the connecting support rod 2 away from the screw conveyor 1. The top of the screw conveyor 1 and the bottom of the melting chamber 3 are provided with a U-shaped positioning groove 4. A valve is provided on the melting chamber 3. The melting chamber 3 and the screw conveyor 1 are the same as existing similar equipment, and will not be described in detail here.

[0028] A ring-shaped sealing block 5 is pasted inside the ring-shaped positioning groove 4, and the height of the ring-shaped sealing block 5 is less than the depth of the ring-shaped positioning groove 4 to ensure that there is a certain space inside the ring-shaped positioning groove 4. At the same time, the ring-shaped sealing block 5 can be made of heat-resistant and wear-resistant nitrile rubber.

[0029] A square cylinder 6 is provided at the bottom of the melting chamber 3, and a filter plate 7 is provided inside the square cylinder 6. A limiting groove 18 is provided on one side of the filter plate 7, so that the raw material melted in the melting chamber 3 can pass through the filter plate 7 and enter the screw conveyor 1 in the process of use, so as to avoid damage to the subsequent equipment. At the same time, a protrusion part for supporting the filter plate 7 can be installed on the square cylinder 6 below the filter plate 7.

[0030] The outer wall of the square cylinder 6 has a cavity 8. A first threaded rod 9 is provided on one side of the top and bottom of the cavity 8. A first conical tooth 10 is installed on the end of the first threaded rod 9 near the limiting groove 18. A connecting movable plate 11 is sleeved on the outside of the first threaded rod 9. A loop-shaped closing limiting plate 12 is installed on the side of the connecting movable plate 11 near the limiting groove 18. The loop-shaped closing limiting plate 12 extends through the square cylinder 6 into the interior of the loop-shaped positioning groove 4. The connecting movable plate 11 and the loop-shaped closing limiting plate 12 are made as one piece. The connecting movable plate 11 and the first threaded rod 9 are threadedly connected. When the two sets of first threaded rods 9 rotate, they can drive the corresponding connecting movable plate 11 and its loop-shaped closing limiting plate 12 to be inserted into the interior of the corresponding loop-shaped positioning groove 4 and fully squeezed. This makes the square cylinder 6 fully fixed between the screw conveyor 1 and the melting chamber 3 and keep it sealed.

[0031] An operating mechanism for rotating the first threaded rod 9 is provided inside the cavity 8. The operating mechanism includes an operating shaft 13, which passes through the cavity 8 on the side away from the limiting groove 18. A second bevel tooth 14 is installed on the outer side of the operating shaft 13. A square groove 15 is opened at the end of the operating shaft 13 near the limiting groove 18, and a square rod 16 is provided inside the square groove 15. A second threaded rod 17 is installed at the end of the square rod 16 near the limiting groove 18, and the second threaded rod 17 passes through the square cylinder 6 and extends into the limiting groove 18. The second bevel tooth 14 is perpendicular to the first bevel tooth 10, and the second bevel tooth 14 and the first bevel tooth 10 are meshed. This allows the operator to rotate the operating shaft 13 to drive the two sets of first threaded rods 9 to rotate in opposite directions, thereby causing the two sets of loop-shaped closed limiting plates 12 to move in opposite directions. This allows the loop-shaped closed limiting plates 12 to enter or leave the corresponding loop-shaped positioning groove 4, thereby completing the quick assembly and disassembly of the square cylinder 6.

[0032] The second threaded rod 17 is threadedly connected to the square cylinder 6, and the second threaded rod 17 and the square rod 16 are integrally manufactured. The square rod 16 is slidably connected to the operating shaft 13, so that when the operating shaft 13 rotates and drives the loop-shaped sealing limiting plate 12 to move into the corresponding loop-shaped positioning groove 4, the square rod 16 can drive the second threaded rod 17 to rotate accordingly and move into the limiting groove 18, so that while the square cylinder 6 is fixed, the filter plate 7 is also fixed to the square cylinder 6. When the operating shaft 13 rotates in the opposite direction and drives the loop-shaped sealing limiting plate 12 to leave the corresponding loop-shaped positioning groove 4, the square rod 16 can drive the second threaded rod 17 to rotate out of the limiting groove 18, so that the square cylinder 6 and the filter plate 7 can be disassembled at the same time, which makes it easier for the staff to further disassemble the filter plate 7 and the square cylinder 6 after removing the square cylinder 6, and to perform more thorough maintenance on the filter plate 7.

[0033] The working principle of this utility model is as follows: The screw conveyor 1 is connected to injection molding equipment such as injection nozzles. After the raw material is melted in the melting chamber 3, it is further filtered by the filter plate 7 and enters the interior of the screw conveyor 1. Then, under the conveying of the screw conveyor 1, it enters the subsequent equipment for injection molding, thereby avoiding damage to the equipment and affecting product quality caused by some parts that cannot be easily melted entering the subsequent injection molding equipment.

[0034] When equipment maintenance is required, the operating shaft 13 is rotated in the reverse direction. As mentioned above, the two sets of first threaded rods 9 rotate accordingly, causing the connecting movable plate 11 to drive the corresponding loop-shaped closed limiting plate 12 to leave the inside of the corresponding loop-shaped positioning groove 4. The fixation between the square cylinder 6 and the screw conveyor 1 and the melting chamber 3 is released, and the square cylinder 6 can be removed from between the screw conveyor 1 and the melting chamber 3, which is convenient and quick. At the same time, during the above process, the operating shaft 13 will drive the square rod 16 to rotate, which will cause the second threaded rod 17 to rotate accordingly. The second threaded rod 17 will then leave the inside of the limiting groove 18, which will cause the square cylinder 6 to be removed. The limiting fixation between the filter plate 7 and the square cylinder 6 will be released. Afterwards, the staff can remove the square cylinder 6 and then take the filter plate 7 out of the square cylinder 6 for maintenance or replacement.

[0035] After the square cylinder 6 is removed, the feeding part of the screw conveyor 1 and the discharging part of the melting chamber 3 are fully exposed, and the staff can then thoroughly clean and maintain the inner wall of this part.

[0036] After maintenance, insert the square cylinder 6 between the screw conveyor 1 and the melting chamber 3 and align them. Then rotate the operating shaft 13 in the forward direction. As mentioned above, the loop-shaped sealing limiting plate 12 is inserted into the corresponding loop-shaped positioning groove 4 and fully squeezed, so that the square cylinder 6 is fixed and kept sealed. Furthermore, the operating shaft 13 drives the square rod 16 and the second threaded rod 17 to rotate accordingly. The second threaded rod 17 is inserted into the inside of the limiting groove 18, so that the filter plate 7 is fully fixed inside the square cylinder 6 for subsequent use.

[0037] The preferred embodiments of this patent have been described in detail above. However, this patent is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this patent.

Claims

1. An injection molding machine feeding mechanism with safety protection structure, comprising a screw conveyor (1), characterized in that: both ends of the top of the outer wall of the screw conveyor (1) are provided with connecting support rods (2), and the end of the connecting support rod (2) away from the screw conveyor (1) is provided with a melting bin (3), and the top of the screw conveyor (1) and the bottom of the melting bin (3) are both provided with a back type positioning groove (4); the bottom of the melting bin (3) is provided with a square cylinder (6), and the inside of the square cylinder (6) is provided with a filter plate (7), and one side of the filter plate (7) is provided with a limiting groove (18); the inside of the outer wall of the square cylinder (6) is reserved with a cavity (8), one side of the top and bottom of the inside of the cavity (8) is provided with a first threaded rod (9), and the end of the first threaded rod (9) close to the limiting groove (18) is provided with a first bevel gear (10), the outside of the first threaded rod (9) is provided with a connecting movable plate (11), one side of the connecting movable plate (11) close to the limiting groove (18) is provided with a back type closed limiting plate (12), and the back type closed limiting plate (12) extends through the square cylinder (6) to the inside of the back type positioning groove (4); the cavity (8) is provided with an operating mechanism for driving the first threaded rod (9) to rotate.

2. The injection molding machine feed mechanism having a safety shield according to claim 1, wherein, The inside of the back type positioning groove (4) is pasted with a back type sealing block (5), and the height of the back type sealing block (5) is less than the depth of the back type positioning groove (4).

3. The injection molding machine feed mechanism having a safety shield according to claim 1, wherein, The connecting movable plate (11) and the back type closed limiting plate (12) are integrally made, and the connecting movable plate (11) and the first threaded rod (9) are threadedly connected.

4. The injection molding machine feed mechanism having a safety shield according to claim 1, wherein, The operating mechanism comprises an operating shaft (13), the operating shaft (13) penetrates one side of the inside of the cavity (8) away from the limiting groove (18), the outside of the operating shaft (13) is provided with a second bevel gear (14), the end of the operating shaft (13) close to the limiting groove (18) is provided with a square groove (15), and the inside of the square groove (15) is provided with a square rod (16), the end of the square rod (16) close to the limiting groove (18) is provided with a second threaded rod (17), and the second threaded rod (17) extends through the square cylinder (6) to the inside of the limiting groove (18).

5. The injection molding machine feed mechanism having a safety shield according to claim 4, wherein, The second bevel gear (14) and the first bevel gear (10) are perpendicular to each other, and the second bevel gear (14) and the first bevel gear (10) are meshingly connected.

6. The injection molding machine feed mechanism having a safety shield according to claim 4, wherein, The second threaded rod (17) and the square cylinder (6) are threadedly connected, and the second threaded rod (17) and the square rod (16) are integrally made.

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