Injection-molding nozzle ultrasonic removal device

Abstract

This utility model belongs to the field of injection molding production technology, and in particular to an ultrasonic removal device for injection molding runners. It includes an ultrasonic removal mechanism and a worktable. Two runner removal molds are located below the ultrasonic removal mechanism. These two molds can rotate 180 degrees and alternately discharge material via an adjustment mechanism and a negative pressure system. Each runner removal mold has a negative pressure channel, a material distribution bin (fixed to the top of the worktable), a workpiece discharge channel (fixed to the bottom of the material distribution bin), and a runner discharge channel (fixed to the bottom of the material distribution bin). By alternating the operation of the two runner removal molds and coordinating with the negative pressure system to adjust the suction of the negative pressure channels on the molds, the device can replace the gripping mechanism in the material handling interval to complete the runner diversion and discharge, reducing the travel distance of the gripping mechanism.

Description

Technical Field

[0001] This utility model belongs to the field of injection molding production technology, and specifically relates to an ultrasonic removal device for injection molding runners. Background Technology

[0002] In the injection molding process, the molded workpiece is usually connected to the sprue, which needs to be removed through subsequent processing. Ultrasonic removal technology is widely used in this process.

[0003] Existing ultrasonic runner removal devices use a gripping mechanism for loading and unloading. After the workpiece is separated from the runner, it falls off by itself, while the runner needs to be gripped by the gripping mechanism and placed into a separate container. The gripping mechanism needs to separate the runner waiting to be removed and placed before proceeding to the next round of operations. This results in problems such as long stroke and long cycle time during the operation of the gripping mechanism, which in turn prevents the ultrasonic runner removal device from removing the runner with higher efficiency, especially in high-cycle automated production lines where it is difficult to meet efficiency requirements. Utility Model Content

[0004] This invention provides an ultrasonic removal device for injection molding runners, which can reduce the trajectory travel of the gripping mechanism when picking up and placing materials, thereby improving the efficiency of the device in removing runners.

[0005] This utility model provides the following technical solution: an ultrasonic removal device for injection molding runners, including an ultrasonic removal mechanism and a worktable. Two runner removal molds are provided below the ultrasonic removal mechanism. The two runner removal molds can rotate 180 degrees and alternately drop material through an adjustment mechanism and a negative pressure system. A negative pressure channel is provided in the runner removal mold. The material distribution bin is fixedly connected to the top of the workbench; The workpiece discharge channel is fixedly connected to the bottom of the material distribution bin and is used for workpiece discharge. The pouring channel and discharge channel are fixedly connected to the bottom of the material distribution bin for pouring and discharging materials.

[0006] The ultrasonic removal mechanism is fixedly connected to an equipment compartment at its bottom end, and the adjustment mechanism is installed inside the adjustment mechanism. The output shaft of the adjustment mechanism extends into the material distribution compartment.

[0007] The inner wall of the material distribution bin is fixedly connected to a partition plate, and the top height of the partition plate is lower than the bottom height of the runner removal mold.

[0008] The inner wall of the material distribution bin is fixedly connected to a large-aperture screen plate, which corresponds to the position of the workpiece discharge channel.

[0009] A guide plate is fixedly connected to one side of the partition plate, and the guide plate is fixedly connected to the inner wall of the material distribution bin.

[0010] The negative pressure system includes an inner tube, an alignment suction port, a connecting sleeve, a rigid air supply pipe, and an exhaust fan. The alignment suction port is located on the side wall of the inner tube, and the inner tube is inserted into the connecting sleeve. The connecting sleeve is fixedly connected to the top of the output shaft of the adjustment mechanism. Two sprue removal molds are symmetrically fixedly connected to the side wall of the connecting sleeve. The rigid air supply pipe is fixedly connected to the top of the alignment suction port. The exhaust fan is fixedly connected to the bottom of the workbench. The rigid air supply pipe passes through the ultrasonic removal mechanism and is fixedly connected to the exhaust fan.

[0011] A lubricating sealing ring is fixedly connected between the inner tube and the connecting sleeve.

[0012] The beneficial effects of this utility model are: by using two sprue removal molds to work alternately, and cooperating with the negative pressure system to adjust the suction of the negative pressure channels on the two sprue removal molds, it can replace the gripping mechanism to complete the diversion and discharge of the sprue during the material handling interval, reduce the trajectory travel of the gripping mechanism when picking up and putting down the material, and thus effectively improve the efficiency of the device in removing the sprue.

[0013] The parts of the device not covered herein are the same as or can be implemented using existing technologies. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the structure of the sprue without the mold and the material distribution bin in this utility model; Figure 3 This is a schematic diagram of the workpiece runner and gating runner in this utility model; Figure 4 This is a schematic diagram of the structure of the sprue removal mold and negative pressure system in this utility model.

[0015] In the diagram: 1. Ultrasonic removal mechanism; 11. Workbench; 2. Sprue removal mold; 21. Negative pressure channel; 3. Adjustment mechanism; 31. Equipment compartment; 4. Material distribution compartment; 41. Workpiece discharge channel; 42. Sprue discharge channel; 43. Middle partition plate; 44. Large aperture screen plate; 45. Guide plate; 5. Negative pressure system; 51. Inner tube; 52. Alignment suction hole; 53. Connecting sleeve; 54. Rigid air supply pipe; 55. Exhaust fan; 56. Lubricating sealing ring. Detailed Implementation

[0016] Please see Figures 1-4The present invention provides the following technical solution: an ultrasonic removal device for injection molding runners, comprising an ultrasonic removal mechanism 1 and a worktable 11, with two runner removal molds 2 provided below the ultrasonic removal mechanism 1, the two runner removal molds 2 being able to rotate 180 degrees and alternately drop material through an adjustment mechanism 3 and a negative pressure system 5, and a negative pressure channel 21 being provided in the runner removal mold 2.

[0017] Material distribution bin 4 is fixedly connected to the top of workbench 11.

[0018] The workpiece discharge channel 41 is fixedly connected to the bottom of the material distribution bin 4 and is used for workpiece discharge.

[0019] The pouring channel 42 is fixedly connected to the bottom of the material distribution bin 4 and is used for pouring and discharging materials.

[0020] In this implementation scheme: A gripping mechanism grips the workpiece to be processed and the semi-finished product connected to the sprue, placing the sprue in the positioning groove at the top of the sprue removal mold 2. The negative pressure system 5 provides negative pressure suction to the negative pressure channel 21 to position the sprue. After the semi-finished product is placed, the ultrasonic removal mechanism 1 controls the tool head to press down on the top of the sprue. Under the combined action of the ultrasonic waves, transducer, amplitude transformer, and tool head, the connection between the workpiece and the sprue nozzle is separated. The workpiece falls into the workpiece discharge channel 41 for discharge, while the sprue remains adsorbed on the top of the sprue removal mold 2. Subsequently, the gripping mechanism changes its travel trajectory from the prior art, canceling the action of gripping the remaining sprue and placing it into the corresponding container. It directly repeats the gripping of another semi-finished product and places it on the top of the sprue removal mold 2. During the process of the gripping mechanism repeatedly gripping and placing another semi-finished product, the controller adjustment mechanism 3 drives the sprue removal mold 2 to rotate 180 degrees, replacing another empty sprue removal mold 2 and moving it below the tool head of the ultrasonic removal mechanism 1, leaving the remaining sprue. In the initial stage of the rotation process, the sprue removal mold 2 is still within the corresponding range of the workpiece discharge channel 41. The negative pressure channel 21 remains connected to the alignment suction hole 52 and the side wall hole of the connecting sleeve 53, and the negative pressure channel 21 continues to provide negative pressure to fix the sprue. When the sprue removal mold 2 rotates to the corresponding range of the sprue discharge channel 42, the negative pressure channel 21 and the side wall hole of the connecting sleeve 53 are disconnected from the alignment suction hole 52, and the suction force at the negative pressure channel 21 is lost. The sprue falls downward into the sprue discharge channel 42 during the movement of the sprue removal mold 2, completing the separation and discharge of the workpiece and the sprue. By reducing the trajectory stroke of the gripping mechanism, the feeding efficiency of the gripping mechanism is improved, thereby improving the efficiency of the device in removing the sprue. The falling processing frequency of the tool head of the ultrasonic removal mechanism 1 is consistent with the feeding frequency of the gripping mechanism. The workpiece discharge channel 41 and the sprue discharge channel 42 are connected to or extend into different containers respectively. During the operation, the coordinated operation of each component is controlled by the controller program.

[0021] The bottom of the ultrasonic removal mechanism 1 is fixedly connected to the equipment compartment 31. The adjustment mechanism 3 is installed inside the adjustment mechanism 3, and the output shaft of the adjustment mechanism 3 extends into the material distribution compartment 4. The equipment compartment 31 can accommodate and protect the adjustment mechanism 3. The adjustment mechanism 3 drives the output shaft to rotate through the drive motor, which in turn drives the connecting sleeve 53 to rotate, and then drives the sprue removal mold 2 to rotate.

[0022] A partition plate 43 is fixedly connected to the inner wall of the material distribution bin 4. The top height of the partition plate 43 is lower than the bottom height of the sprue removal mold 2. The partition plate 43 can isolate the internal space of the material distribution bin 4 to prevent falling workpieces from bouncing into the sprue discharge channel 42.

[0023] A large-aperture screen plate 44 is fixedly connected to the inner wall of the material distribution bin 4. The large-aperture screen plate 44 corresponds to the position of the workpiece discharge channel 41. The large-aperture screen plate 44 can intercept the sprue. If the sprue falls into the corresponding position of the workpiece discharge channel 41 due to an accident, the large-aperture screen plate 44 can prevent the sprue from falling directly into the workpiece discharge channel 41. The hole size of the large-aperture screen plate 44 is set according to the size of the sprue and the workpiece.

[0024] A guide plate 45 is fixedly connected to one side of the partition plate 43. The guide plate 45 is fixedly connected to the inner wall of the material distribution bin 4. The guide plate 45 can play a guiding role, guiding the fallen workpieces to the corresponding position of the workpiece discharge channel 41.

[0025] The negative pressure system 5 includes an inner tube 51, an alignment suction port 52, a connecting sleeve 53, a rigid air supply pipe 54, and an exhaust fan 55. The alignment suction port 52 is located on the side wall of the inner tube 51, which is inserted into the connecting sleeve 53. The connecting sleeve 53 is fixedly connected to the top of the output shaft of the adjusting mechanism 3. Two sprue removal molds 2 are symmetrically fixedly connected to the side wall of the connecting sleeve 53. The rigid air supply pipe 54 is fixedly connected to the top of the alignment suction port 52. The exhaust fan 55 is fixedly connected to the bottom of the workbench 11. The rigid air supply pipe 54 passes through the ultrasonic removal mechanism 1 and is fixedly connected to the exhaust fan 55. The exhaust fan 55 draws in air, creating a negative pressure system. The pressure channel 21, connecting sleeve 53, inner tube 51 and rigid air supply pipe 54 form an air intake channel, thereby forming a negative pressure suction port at the negative pressure channel 21 to fix the sprue. The connecting sleeve 53 rotates with the sprue removal mold 2, and with the opening range of the alignment suction hole 52, it can change the connection between the negative pressure channel 21 and the rigid air supply pipe 54 as the sprue removal mold 2 rotates, so that when the sprue removal mold 2 rotates to the corresponding position of the sprue discharge channel 42, it loses the negative pressure fixation of the sprue. The rigid air supply pipe 54 is made of high-strength synthetic plastic or hard metal material, which can provide support for itself and the inner tube 51.

[0026] A lubricating sealing ring 56 is fixedly connected between the inner tube 51 and the connecting sleeve 53; the lubricating sealing ring 56 can reduce the friction between the inner tube 51 and the connecting sleeve 53, thereby reducing the force on the rigid gas transmission tube 54.

[0027] The working principle and usage process of this utility model are as follows: The gripping mechanism grips the workpiece to be processed and the semi-finished product connected to the sprue. The sprue is placed in the positioning groove at the top of the sprue removal mold 2. The negative pressure system 5 provides negative pressure suction to the negative pressure channel 21 to position the sprue. After the semi-finished product is placed, the ultrasonic removal mechanism 1 controls the tool head to press down and separate the workpiece from the connection between the workpiece and the sprue nozzle. The workpiece falls into the workpiece discharge channel 41 and is discharged. The sprue is still adsorbed at the top of the sprue removal mold 2. Then, the gripping mechanism directly and repeatedly grips another semi-finished product and places it at the top of the sprue removal mold 2. During the process of the gripping mechanism repeatedly gripping and placing another semi-finished product, the controller adjustment mechanism 3 drives the sprue removal mold 2 to rotate 180 degrees to replace another empty sprue removal mold. 2. Move to below the tool head of the ultrasonic removal mechanism 1. The sprue removal mold 2 with residual sprue is in the front part of the rotation process. The sprue removal mold 2 is still within the corresponding range of the workpiece discharge channel 41. The negative pressure channel 21 is still connected with the alignment suction hole 52 and the side wall hole of the connecting sleeve 53. The negative pressure channel 21 still provides negative pressure to fix the sprue. When the sprue removal mold 2 rotates to the corresponding range of the sprue discharge channel 42, the negative pressure channel 21 and the side wall hole of the connecting sleeve 53 are disconnected from the alignment suction hole 52. The suction force at the negative pressure channel 21 is lost. The sprue falls down into the sprue discharge channel 42 during the movement of the sprue removal mold 2, completing the separation and discharge of the workpiece and the sprue. By reducing the trajectory stroke of the gripping mechanism for picking up and putting down materials, the feeding efficiency of the gripping mechanism is improved.

Claims

1. An ultrasonic removal device for injection molding runners, comprising an ultrasonic removal mechanism (1) and a worktable (11), characterized in that: Below the ultrasonic removal mechanism (1) are two sprue removal molds (2). The two sprue removal molds (2) can rotate 180 degrees and alternately drop material through the adjustment mechanism (3) and the negative pressure system (5). A negative pressure channel (21) is opened in the sprue removal mold (2). The material distribution bin (4) is fixedly connected to the top of the workbench (11); Workpiece discharge channel (41) is fixedly connected to the bottom end of the material distribution bin (4) for discharging workpieces; The pouring channel (42) is fixedly connected to the bottom of the material distribution bin (4) for pouring and discharging materials.

2. The ultrasonic removal device for injection molding runners according to claim 1, characterized in that: The bottom end of the ultrasonic removal mechanism (1) is fixedly connected to the equipment compartment (31), the adjustment mechanism (3) is installed inside the adjustment mechanism (3), and the output shaft of the adjustment mechanism (3) extends into the material distribution compartment (4).

3. The ultrasonic removal device for injection molding runners according to claim 1, characterized in that: The inner wall of the material distribution bin (4) is fixedly connected to a partition plate (43), and the top height of the partition plate (43) is lower than the bottom height of the sprue removal mold (2).

4. The ultrasonic removal device for injection molding runners according to claim 1, characterized in that: The inner wall of the material distribution bin (4) is fixedly connected to a large-aperture sieve plate (44), and the large-aperture sieve plate (44) corresponds to the position of the workpiece discharge channel (41).

5. The ultrasonic removal device for injection molding runners according to claim 3, characterized in that: A guide plate (45) is fixedly connected to one side of the partition plate (43), and the guide plate (45) is fixedly connected to the inner wall of the distribution bin (4).

6. The ultrasonic removal device for injection molding runners according to claim 1, characterized in that: The negative pressure system (5) includes an inner tube (51), an alignment suction hole (52), a connecting sleeve (53), a rigid air supply pipe (54), and an exhaust fan (55). The alignment suction hole (52) is opened on the side wall of the inner tube (51). The inner tube (51) is inserted into the connecting sleeve (53). The connecting sleeve (53) is fixedly connected to the top of the output shaft of the adjustment mechanism (3). The two sprue removal molds (2) are symmetrically fixedly connected to the side wall of the connecting sleeve (53). The rigid air supply pipe (54) is fixedly connected to the top of the alignment suction hole (52). The exhaust fan (55) is fixedly connected to the bottom of the workbench (11). The rigid air supply pipe (54) passes through the ultrasonic removal mechanism (1) and is fixedly connected to the exhaust fan (55).

7. The ultrasonic removal device for injection molding runners according to claim 6, characterized in that: A lubricating sealing ring (56) is fixedly connected between the inner tube (51) and the connecting sleeve (53).

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