Hopper for injection molding machine

Abstract

The utility model discloses a hopper of injection molding machine, including the hopper, the hopper is equipped with the feed inlet in one side, the hopper is equipped with the discharge gate in the bottom, the top of hopper is equipped with the opening, the opening is covered with the end cover, the end cover is installed with the rotary rod, three groups of mounting rods are fixedly connected on the rotary rod, the mounting rod is installed with the connecting sleeve, the connecting sleeve is installed with the stirring rod, and the stirring rod is detachably connected with the connecting sleeve, one side of hopper is installed with motor no.

Description

Technical Field

[0001] This utility model relates to the field of injection molding machine technology, and in particular to a hopper for an injection molding machine. Background Technology

[0002] Injection molding machines, also known as injection molding machines or injection molding machines, are the main molding equipment for making various shapes of plastic products from thermoplastic or thermosetting plastics using plastic molds. Injection molding machines complete production through a cycle of "plasticization-injection-pressure holding-cooling-demolding". Plastic granules enter the barrel from the hopper, melt and plasticize under the action of screw rotation and external heating, and then are injected into the mold cavity at high speed by the injection cylinder.

[0003] However, the hoppers of existing injection molding machines usually have a relatively simple structure. Some manufacturers produce plastic granules that stick together, forming a large clump. Since this simple hopper does not have a stirring function, these large clumps may block the hopper's outlet, causing blockage and preventing the hopper from feeding material normally. Utility Model Content

[0004] This application provides a hopper for an injection molding machine, which can solve the problem that traditional injection molding machine hoppers do not have a stirring function, but there are some large plastic granule clumps in the plastic granule raw material. These large plastic granule clumps may block the hopper outlet, causing the hopper to be unable to feed material normally.

[0005] This application provides a hopper for an injection molding machine, comprising a hopper with a feed inlet on one side and a discharge outlet at the bottom. The top of the hopper has an opening covered by an end cap, on which a rotating rod is mounted. Three sets of mounting rods are fixedly connected to the rotating rod, and a connecting sleeve is mounted on the mounting rod. A stirring rod is mounted on the connecting sleeve, and the stirring rod is detachably connected to the connecting sleeve. A motor is mounted on one side of the hopper, and the motor is connected to the rotating rod via a pulley set.

[0006] Furthermore, the three sets of mounting rods are arranged in a ring, and the three sets of mounting rods are staggered from each other, and several auxiliary rods are fixedly connected to the stirring rod.

[0007] Furthermore, the mounting rod and the connecting sleeve are provided with the same mounting holes, and the mounting rod and the connecting sleeve are fixed together by fastening bolts and fastening nuts, with one end of the fastening bolt passing through the mounting hole and engaging with the fastening nut.

[0008] Furthermore, two washers are provided between the connecting sleeve and the fastening bolt. The two washers are in contact with each other, and the contact area of ​​the washers is a toothed surface one that is in contact with each other. The other side of the washers is a toothed surface two.

[0009] Furthermore, a connecting rod is rotatably connected inside the rotating rod, and a cavity is formed inside the connecting rod. A threaded rod is provided inside the cavity, and a thread that mates with the threaded rod is formed inside the cavity. A pressure block is fixedly connected to the bottom of the threaded rod, and a filter plate is fixedly connected to the discharge port. The filter plate has the same shape as the pressure block and is located directly below the pressure block. A second motor is installed on the end cover, and a bevel gear set is installed between the second motor and the connecting rod.

[0010] In summary, the advantages of the hopper of an injection molding machine in this application are as follows: by setting an end cover above the hopper and installing a rotating rod on the end cover, three sets of staggered mounting rods are set on the rotating rod, a connecting sleeve is installed on the mounting rod, and a stirring rod is detachably connected to the connecting sleeve. The mounting rod and the connecting sleeve are fixed by fastening bolts and fastening nuts. The angle of the connecting sleeve can be adjusted by loosening the fastening nuts, thereby indirectly changing the tilt angle of the stirring rod. The efficiency and effect of stirring can be increased by adjusting different angles. At the same time, since the three sets of mounting rods are staggered, the stirring rods are also staggered, which also increases the efficiency and effect of stirring. The motor drives the rotating rod to rotate through the pulley set, thereby stirring apart large clumps of plastic particles that are stuck together. Attached Figure Description

[0011] Figure 1 A perspective view of the utility model;

[0012] Figure 2 This is a partial structural cross-sectional view of the utility model;

[0013] Figure 3 for Figure 2 A magnified view of a section at point A in the middle;

[0014] Figure 4 This is a side sectional view of the utility model;

[0015] Figure 5 for Figure 2 A magnified view of a section at point B.

[0016] Reference numerals in the attached diagram: 1. Hopper; 2. Discharge port; 3. Opening; 4. End cap; 5. Rotating rod; 6. Mounting rod; 7. Connecting sleeve; 8. Stirring rod; 9. Motor 1; 10. Pulley assembly; 11. Auxiliary rod; 12. Gasket; 13. Connecting rod; 14. Cavity; 15. Threaded rod; 16. Pressing block; 17. Filter plate; 18. Motor 2; 19. Bevel gear assembly. Detailed Implementation

[0017] The following description is merely a preferred embodiment of this utility model, and the scope of protection is not limited to this embodiment. All technical solutions falling within the scope of this utility model should be considered within the protection scope of this utility model. It should also be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

[0018] like Figures 1 to 5 As shown, a hopper for an injection molding machine includes a hopper 1, a feed port for feeding is provided on one side of the hopper 1, a discharge port 2 for discharging is provided at the bottom of the hopper 1, an opening 3 is provided at the top of the hopper 1, and an end cap 4 is provided at the top of the hopper 1, and the end cap 4 covers the opening 3.

[0019] A rotating rod 5 is rotatably connected to the end cover 4. One end of the rotating rod 5 is located inside the hopper 1, and the other end of the rotating rod 5 is higher than the upper surface of the end cover 4. Three sets of mounting rods 6 are fixedly connected to the rotating rod 5 inside the hopper 1. The three sets of mounting rods 6 are arranged in a ring around the rotating rod 5, and the three sets of mounting rods 6 are staggered. A connecting sleeve 7 is installed on each mounting rod 6. The mounting rod 6 and the connecting sleeve 7 have the same mounting hole, which passes through the mounting rod 6 and the connecting sleeve 7. The mounting holes on the mounting rod 6 and the connecting sleeve 7 are concentric. The mounting rod 6 and the connecting sleeve 7 are fixed together by fastening bolts and fastening nuts. One end of the fastening bolt is inserted into the mounting hole on the connecting sleeve 7 and passes through the connecting sleeve 7. The mounting hole on the connecting rod 13 finally extends out from the other end of the mounting hole on the connecting sleeve 7. A fastening nut is fitted on the end that extends out. A stirring rod 8 is installed on each connecting sleeve 7. The stirring rod 8 is detachably connected to the connecting sleeve 7. Specifically, the stirring rod 8 and the connecting sleeve 7 are connected by threads. The tilt angle of the connecting sleeve 7 can be adjusted by loosening the fastening nut, thereby indirectly changing the tilt angle of the stirring rod 8, so that the stirring rod 8 is at a tilt angle with the best stirring effect. A motor 9 is installed on one side of the hopper 1. A pulley set 10 is installed on the output shaft of the motor 9 and the end of the rotating rod 5 that is higher than the end cover 4. The motor 9 drives the rotating rod 5 to rotate through the pulley set 10.

[0020] Furthermore, several auxiliary rods 11 are fixedly connected to the stirring rod 8. The auxiliary rods 11 can further enhance the stirring effect of the stirring rod 8. Two washers 12 are provided between the fastening bolt and the connecting sleeve 7. The two washers 12 are fitted onto the fastening bolt. When the fastening bolt is locked by the fastening nut, the two washers 12 are in contact with each other. A toothed surface 1 is provided at the point where the two washers 12 are in contact with each other, and a toothed surface 2 is provided on the other side of the two washers 12. The toothed surface 2 on one washer 12 abuts against the bolt, and the toothed surface 2 on the other washer 12 abuts against the connecting sleeve 2. This can better increase the stability of the fastening bolt and the fastening nut, so that the connecting sleeve 7 will not rotate during the stirring process.

[0021] Furthermore, a connecting rod 13 is rotatably connected inside the rotating rod 5. A cavity 14 is formed inside the connecting rod 13, and a threaded rod 15 is provided inside the cavity 14. A thread that mates with the threaded rod 15 is formed on the cavity 14 of the connecting rod 13. A pressure block 16 is fixedly connected to the bottom of the threaded rod 15. A filter plate 17 is provided directly below the pressure block 16, and the pressure block 16 and the filter plate 17 have the same shape. The filter is fixedly connected to the discharge port 2. A second motor 18 is installed on the end cover 4. A bevel gear set 19 is installed on the output shaft of motor 8 and the connecting rod 13. The filter plate 17 intercepts large plastic particles stuck together. Motor 2 18 drives the connecting rod 13 to rotate through the bevel gear set 19. When motor 2 18 rotates forward, the rotation of the connecting rod 13 will drive the threaded rod 15 to move downward. The threaded rod 15 will drive the pressure block 16 to move downward, thereby crushing the large plastic particles stuck together by the filter plate 17. When motor 2 18 rotates in reverse, it will drive the threaded rod 15 to return to its original position.

[0022] Working principle of the utility model: Plastic granules enter the hopper 1 through the feed inlet. Motor 1 9 drives the stirring rod 8 on the rotating rod 5 to rotate through the pulley group 10, thereby stirring the plastic granules in the hopper 1 and breaking up the large clumps of granules that are stuck together. However, some clumps of granules will be missed. These missed clumps of granules will be intercepted by the filter screen. Motor 2 18 will start at regular intervals. When Motor 2 18 rotates forward, the pressing block 16 will press down to break up the intercepted clumps of granules. When Motor 2 18 rotates in reverse, it will drive the pressing block 16 back to the initial position. Motor 2 18 is started at regular intervals and will start automatically once every once in a while.

Claims

1. A hopper for an injection molding machine, comprising a hopper (1), an inlet on one side of the hopper (1), and an outlet (2) at the bottom of the hopper (1), characterized in that, The top of the hopper (1) has an opening (3), and an end cap (4) is covered on the opening (3). A rotating rod (5) is installed on the end cap (4). Three sets of mounting rods (6) are fixedly connected to the rotating rod (5). A connecting sleeve (7) is installed on the mounting rod (6). A stirring rod (8) is installed on the connecting sleeve (7). The stirring rod (8) and the connecting sleeve (7) are detachably connected. A motor (9) is installed on one side of the hopper (1). The motor (9) is connected to the rotating rod (5) through a pulley set (10).

2. The hopper of an injection molding machine according to claim 1, characterized in that, The three sets of mounting rods (6) are arranged in a ring and are staggered from each other. Several auxiliary rods (11) are fixedly connected to the stirring rod (8).

3. The hopper of an injection molding machine according to claim 2, characterized in that, The mounting rod (6) and the connecting sleeve (7) are provided with the same mounting holes. The mounting rod (6) and the connecting sleeve (7) are fixed together by fastening bolts and fastening nuts. One end of the fastening bolt passes through the mounting hole and cooperates with the fastening nut.

4. The hopper of an injection molding machine according to claim 3, characterized in that, Two washers (12) are provided between the connecting sleeve (7) and the fastening bolt. The two washers (12) are in contact with each other. The contact area of ​​the washers (12) is a toothed surface one that is in contact with each other, and the other side of the washers (12) is a toothed surface two.

5. The hopper of an injection molding machine according to claim 4, characterized in that, A connecting rod (13) is rotatably connected inside the rotating rod (5). A cavity (14) is opened inside the connecting rod (13). A threaded rod (15) is provided inside the cavity (14). A thread that mates with the threaded rod (15) is opened inside the cavity (14). A pressure block (16) is fixedly connected to the bottom of the threaded rod (15). A filter plate (17) is fixedly connected to the outlet (2). The filter plate (17) has the same shape as the pressure block (16), and the filter plate (17) is located directly below the pressure block (16). A second motor (18) is installed on the end cover (4). A bevel gear set (19) is installed between the second motor (18) and the connecting rod (13).

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