Uninterrupted negative pressure feeding device for injection molding PP particles of a hot water kettle

Abstract

The utility model discloses a kind of hot water kettle injection molding PP particle uninterrupted negative pressure feeding device, it includes injection molding machine: the hopper of the injection molding machine is fixedly installed with conveying pipe, one end of the conveying pipe is fixedly installed with suction nozzle. The utility model makes the negative pressure generator of injection molding machine form negative pressure in conveying pipe, so that the PP particle in storage barrel is inhaled into the hopper of injection molding machine, when the PP particle in left storage barrel is almost exhausted, the capacitive sensor in storage barrel sends signal, after the control box of injection molding machine receives signal, servo motor is started, so that the output shaft of servo motor drives screw rod to rotate, so that sliding table moves upwards, and then make suction nozzle move to the upper of storage barrel, make the rotary table of rotary table drive suction nozzle horizontal rotation degree, again make the output shaft of servo motor drive screw rod to rotate, so that suction nozzle moves to right side storage barrel, i.

Description

Technical Field

[0001] This utility model belongs to the field of kettle injection molding technology, and in particular relates to a continuous negative pressure feeding device for PP granules in kettle injection molding. Background Technology

[0002] Injection molding of kettles is a manufacturing process in which polypropylene (PP) plastic granules are heated and melted in an injection molding machine, injected into a specific mold cavity, and cooled to form kettle parts (such as the kettle body, lid, handle, base shell, etc.). It is one of the core links in kettle production. The process combines material properties, equipment parameter control, and mold design, directly affecting the key properties of the product such as structural strength, heat resistance, and appearance quality.

[0003] Currently, injection molding machines use compressed air to generate negative pressure in the feeding pipeline, ensuring that PP granules are smoothly sucked into the pipeline. In the actual injection molding process of kettles, the suction pipe of the injection molding machine is directly inserted into the PP granule bag. When a bag of PP granules is about to run out, the operator needs to manually insert the suction pipe into another full bag of PP granules to ensure that the injection molding machine can continue to supply material. In this case, the operator needs to constantly observe the material status in the PP granule bag to avoid untimely switching and interruption of the injection molding machine's material supply. Therefore, there is a need for a non-interrupted negative pressure feeding device for PP granules in kettle injection molding, which can switch the position of the suction nozzle through a rotation and lifting structure, thereby ensuring the continuity of injection molding production. Utility Model Content

[0004] The purpose of this invention is to provide a continuous negative pressure feeding device for injection molding PP granules for kettles, which can switch the position of the suction nozzle through a rotation and lifting structure, thereby ensuring the continuity of injection molding production and solving the problems mentioned in the background art.

[0005] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: A continuous negative pressure feeding device for injection molding PP granules for kettles includes an injection molding machine. A conveying pipe is fixedly installed in the hopper of the injection molding machine. A suction nozzle is fixedly installed at one end of the conveying pipe. A capacitive sensor is provided on the inner wall of the suction nozzle. Two storage bins are provided on the right side of the injection molding machine. A connecting sleeve rod is sleeved and fixedly installed on the surface of the suction nozzle. A fixed platform is provided between the two storage bins. A rotary table is fixedly installed on the top of the fixed platform. A limiting slide is fixedly installed on the surface of the rotary table. A threaded rod is rotatably connected to the inner wall of the limiting slide. A slide is sleeved on the surface of the threaded rod. The slide is threadedly connected to the threaded rod. The slide is fixedly connected to the connecting sleeve rod. A servo motor is fixedly installed on the surface of the limiting slide. The output shaft of the servo motor is fixedly connected to one end of the threaded rod.

[0006] Preferably, both sides of the limiting slide are fixedly connected to a fixing plate, and a limiting slide groove is formed on the surface of one of the fixing plates.

[0007] Preferably, the connecting sleeve rod passes through the limiting slide groove, and the limiting slide groove is a rectangular groove.

[0008] Preferably, the inner wall of the limiting slide is fixedly connected to two limiting rods, and the threaded rod is located between the two limiting rods.

[0009] Preferably, the limiting rod passes through the slide table, and the limiting rod is slidably connected to the slide table.

[0010] The beneficial effects of this utility model are:

[0011] 1. This utility model creates negative pressure in the feed pipe by using the negative pressure generator of the injection molding machine, which causes PP particles in the storage tank to be sucked into the hopper of the injection molding machine. When the PP particles in the left storage tank are almost exhausted, the capacitive sensor in the storage tank sends a signal in time. After receiving the signal, the control box of the injection molding machine starts the servo motor, which drives the threaded rod to rotate. The threaded rod drives the slide table to move upward, which in turn drives the connecting sleeve rod to move the suction nozzle to the top of the storage tank. The rotary table rotates the suction nozzle horizontally, and then the output shaft of the servo motor drives the threaded rod to rotate, which moves the suction nozzle into the right storage tank. This achieves the purpose of switching the position of the suction nozzle through the rotation and lifting structure, thereby ensuring the continuity of injection molding production.

[0012] 2. This utility model uses a fixed plate, a limiting groove, and a limiting rod in combination to make the output shaft of the servo motor drive the threaded rod to rotate. The threaded rod drives the slide table to move through the limiting rod, thereby making the slide table move more stably. When the slide table drives the connecting sleeve rod on its surface to move, the connecting sleeve rod slides in the limiting groove on the surface of the fixed plate, so that the fixed plate provides a certain degree of protection for the inner cavity of the limiting groove. Attached Figure Description

[0013] in:

[0014] Figure 1 This is a front view schematic diagram of one embodiment of the present utility model;

[0015] Figure 2 This is a three-dimensional schematic diagram of the feeding structure of one embodiment of the present invention;

[0016] Figure 3 This is a three-dimensional exploded view of the feeding structure of one embodiment of the present invention;

[0017] Figure 4 This is one embodiment of the present utility model. Figure 3 A magnified view of point A in the middle.

[0018] The attached diagram lists the components represented by each number as follows:

[0019] 1. Injection molding machine, 2. Feed pipe, 3. Suction nozzle, 4. Storage tank, 5. Connecting sleeve, 6. Fixed platform, 7. Rotary table, 8. Limit slide, 9. Threaded rod, 10. Slide table, 11. Servo motor, 12. Fixed plate, 13. Limit slide groove, 14. Limit rod. Detailed Implementation

[0020] In the following description, embodiments of the non-stop negative pressure feeding device for injection molding PP granules for kettles according to the present invention will be described with reference to the accompanying drawings.

[0021] Figure 1-4 This invention illustrates an embodiment of a continuous negative pressure feeding device for injection-molded PP granules in a kettle, comprising an injection molding machine 1. A feeding pipe 2 is fixedly installed on the hopper of the injection molding machine 1. The injection molding machine 1 includes a control box, a hopper, a negative pressure generator, an injection system, a mold clamping system, and a transmission system. A suction nozzle 3 is fixedly installed at one end of the feeding pipe 2. A capacitive sensor is installed on the inner wall of the suction nozzle 3. Two storage bins 4 are located on the right side of the injection molding machine 1. A connecting sleeve rod 5 is fitted and fixedly installed on the surface of the suction nozzle 3, passing through a limiting slide groove 13, which is a rectangular groove. A fixed platform 6 is located between the two storage bins 4. A rotary table 7 is fixedly installed on the top of the fixed platform 6. A limiting slide 8 is fixedly installed on the surface of the rotary table 7. Two limiting rods 14 are fixedly connected to the inner wall of the limiting slide 8, passing through a slide table 10 and slidably connected to it. A threaded rod 9 is located between the two limiting rods 14. In the space between the two sides of the limiting slide 8, there are fixed plates 12. Through the cooperation of the fixed plates 12, the limiting slide groove 13 and the limiting rod 14, the output shaft of the servo motor 11 drives the threaded rod 9 to rotate. The threaded rod 9 drives the slide table 10 to move through the limiting rod 14, thereby making the movement of the slide table 10 more stable. When the slide table 10 drives the connecting sleeve rod 5 on its surface to move, the connecting sleeve rod 5 slides in the limiting slide groove 13 on the surface of the fixed plate 12. The fixed plate 12 provides a certain degree of protection for the inner cavity of the limiting slide 8. The surface of one of the fixed plates 12 has a limiting slide groove 13. The inner wall of the limiting slide 8 is rotatably connected to the threaded rod 9. The surface of the threaded rod 9 is fitted with a slide table 10. The slide table 10 is threadedly connected to the threaded rod 9. The slide table 10 is fixedly connected to the connecting sleeve rod 5. The surface of the limiting slide 8 is fixedly installed with a servo motor 11. The output shaft of the servo motor 11 is fixedly connected to one end of the threaded rod 9.

[0022] Working Principle: When using this invention, the user turns on the injection molding machine 1, causing the negative pressure generator of the injection molding machine 1 to create a negative pressure environment in the conveying pipe 2. This causes the PP particles in the storage tank 4 to be drawn into the suction nozzle 3 under the pressure difference between atmospheric pressure and negative pressure, and then enter the conveying pipe 2. Due to the continuous effect of negative pressure, the particles are rapidly conveyed to the hopper of the injection molding machine 1 in a suspended state within the conveying pipe 2. When the PP particles in the left storage tank 4 are almost depleted, the capacitive sensor in the storage tank 4 promptly sends a signal. After receiving the signal, the control box of the injection molding machine 1 starts the servo motor 11, causing the output shaft of the servo motor 11 to drive the threaded rod 9 to rotate. This causes the threaded rod 9 to be limited by the limit rod 14, thus driving the sliding... The slide 10 moves upward, causing the connecting sleeve 5 on its surface to move upward. The connecting sleeve 5 then moves the suction nozzle 3 above the storage tank 4. The servo motor 11 is then stopped, and the rotary table 7 is started. The rotary table 7 rotates the limit slide 8 horizontally by 180 degrees, causing the suction nozzle 3 to rotate horizontally by 180 degrees. At this time, the servo motor 11 is started again, causing the output shaft of the servo motor 11 to rotate the threaded rod 9. The threaded rod 9 then moves the slide 10 downward, causing the slide 10 to move the suction nozzle 3 into the storage tank 4 on the right side via the connecting sleeve 5. This achieves the purpose of switching the position of the suction nozzle through rotation and lifting structure, thereby ensuring the continuity of injection molding production.

[0023] In summary, this continuous negative pressure feeding device for injection molding PP granules in a kettle achieves this by creating negative pressure in the feed pipe 2 through the negative pressure generator of the injection molding machine 1. This causes the PP granules in the storage tank 4 to be sucked into the hopper of the injection molding machine 1. When the PP granules in the left storage tank 4 are almost exhausted, the capacitive sensor in the storage tank 4 sends a signal in time. After receiving the signal, the control box of the injection molding machine 1 starts the servo motor 11, causing the output shaft of the servo motor 11 to drive the threaded rod 9 to rotate. This causes the threaded rod 9 to drive the slide table 10 to move upward, which in turn causes the connecting sleeve rod 5 to move the suction nozzle 3 above the storage tank 4. This causes the rotary table 7 to rotate the suction nozzle 3 horizontally by 180 degrees, and then the output shaft of the servo motor 11 drives the threaded rod 9 to rotate, causing the suction nozzle 3 to move into the right storage tank 4. This achieves the goal of ensuring the continuity of injection molding production by switching the position of the suction nozzle through rotation and lifting structures.

Claims

1. A kind of hot kettle injection PP particle uninterrupted negative pressure feeding device, it is characterized in that, The system includes an injection molding machine (1), a material conveying pipe (2) fixedly installed in the hopper of the injection molding machine (1), a suction nozzle (3) fixedly installed at one end of the material conveying pipe (2), a capacitive sensor installed on the inner wall of the suction nozzle (3), two storage tanks (4) on the right side of the injection molding machine (1), a connecting sleeve rod (5) fitted and fixedly installed on the surface of the suction nozzle (3), a fixed platform (6) between the two storage tanks (4), and a rotary table (7) fixedly installed on the top of the fixed platform (6). The rotary table (7) has a fixed limit slide (8) on its surface. The inner wall of the limit slide (8) is rotatably connected to a threaded rod (9). The surface of the threaded rod (9) is fitted with a slide (10). The slide (10) is threadedly connected to the threaded rod (9). The slide (10) is fixedly connected to the connecting sleeve rod (5). The surface of the limit slide (8) has a fixed servo motor (11). The output shaft of the servo motor (11) is fixedly connected to one end of the threaded rod (9).

2. The continuous negative pressure feeding device for injection molding PP granules in a kettle according to claim 1, characterized in that, The left and right sides of the limiting slide (8) are fixedly connected to a fixing plate (12), and a limiting groove (13) is opened on the surface of one of the fixing plates (12).

3. The continuous negative pressure feeding device for injection molding PP granules in a kettle according to claim 2, characterized in that, The connecting sleeve (5) passes through the limiting slide groove (13), which is a rectangular groove.

4. The uninterrupted negative pressure feeding device for injection-molded PP granules in a kettle according to claim 3, characterized in that, The inner wall of the limiting slide (8) is fixedly connected to two limiting rods (14), and the threaded rod (9) is located between the two limiting rods (14).

5. The uninterrupted negative pressure feeding device for injection-molded PP granules for kettles according to claim 4, characterized in that, The limiting rod (14) passes through the slide table (10), and the limiting rod (14) is slidably connected to the slide table (10).

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