An automatic sprue cutting device for injection molding part processing

Abstract

An automatic sprue-cutting device for injection molding parts includes a worktable with parallel baffles and a first push plate fixedly mounted on it. The first push plate and the baffles form a processing station for cutting the sprue of the injection molded parts. The first push plate is connected to a movable frame via a telescopic column. One end of the telescopic column is fixed to the first push plate, and the other end slides through the movable frame, which restricts the radial movement of the telescopic column. A return spring is sleeved on the outside of the telescopic column, with both ends abutting against the first push plate and the movable frame. A drive motor is fixedly mounted on the movable frame, and the output shaft of the drive motor is connected to a rotary cutter that passes through the movable frame and the first push plate. Limiting shafts are provided on both sides of the rotary cutter, passing through the first push plate and fixed to the movable frame. A first cylinder is located at the bottom of the movable frame and is fixedly mounted on the worktable. This invention aims to reduce the inefficiency and safety issues of traditional manual sprue-cutting methods.

Description

Technical Field

[0001] This utility model relates to the field of injection molding equipment, specifically an automatic sprue cutting device for injection molding. Background Technology

[0002] With the rapid development of the injection molding industry towards automation, intelligence, high efficiency, and high quality, and the continuous rise in labor costs, the demand for automation in the production process is becoming increasingly urgent. However, in the post-processing of injection molded parts, the automation level of the sprue removal process is relatively lagging behind, and many production lines still rely on manual operation to complete this process.

[0003] This manual cutting method is not only inefficient and difficult to adapt to the high-speed production rhythm of modern production lines, leading to capacity bottlenecks; it also has the problem of insufficient operational safety, which can easily cause injury to operators. Utility Model Content

[0004] The purpose of this invention is to provide an automatic gate cutting device for injection molding parts processing, so as to reduce the problems of low efficiency and insufficient safety of traditional manual cutting methods.

[0005] To achieve the above objectives, the specific solution adopted by this utility model is as follows: an automatic gate-cutting device for injection molding part processing includes a worktable, on which parallel baffles and a first push plate are fixedly installed. The first push plate and the baffles form a processing station for cutting the gate of the injection molding part. The first push plate is connected to a movable frame through a telescopic column. One end of the telescopic column is fixed to the first push plate, and the other end of the telescopic column slides through the movable frame. The movable frame restricts the radial movement of the telescopic column. A return spring is sleeved on the outside of the telescopic column, and both ends of the return spring abut against the first push plate and the movable frame. A drive motor is fixedly installed on the movable frame. The output shaft of the drive motor is connected to a rotary cutter. The rotary cutter passes through the movable frame and the first push plate. Limiting shafts are provided on both sides of the rotary cutter. The limiting shafts pass through the first push plate and are fixed to the movable frame. A first cylinder is provided at the bottom of the movable frame. The first cylinder is fixedly installed on the worktable. The movable frame moves towards the injection molding part processing station under the drive of the first cylinder, thereby driving the first push plate, the drive motor, the rotary cutter, and the limiting shafts to move together towards the injection molding part processing station.

[0006] As a further optimization of the automatic sprue cutting device for injection molding of this utility model: a robotic arm is slidably installed at the corresponding position of the track beam above the worktable, and a claw hook is provided at the end of the forearm of the robotic arm.

[0007] As a further optimization of the automatic sprue cutting device for injection molding of this utility model: the surface of the claw hook is covered with a rubber pad, and the surface of the rubber pad is processed with anti-slip texture.

[0008] As a further optimization of the automatic sprue cutting device for injection molding processing of this utility model: a pneumatic shear is provided on the path of the robotic arm to transfer the injection molded part to the worktable, and the pneumatic shear is fixedly installed on the surface of the worktable.

[0009] As a further optimization of the automatic gate cutting device for injection molding processing of this utility model: a second cylinder is fixedly installed on the worktable, and the output shaft of the second cylinder is connected to a second push plate. Under the action of the second cylinder, the second push plate pushes the injection molded part located on one side of the second push plate to the injection molding processing station.

[0010] As a further optimization of the automatic gate cutting device for injection molding processing of this utility model: a third cylinder is fixedly installed on the worktable, the output shaft axes of the third cylinder and the second cylinder intersect each other, the output shaft of the third cylinder is connected to a third push plate, a rotary table is installed on the worktable surface on one side of the third push plate, and the third push plate pushes the injection molded part located on the rotary table to the second push plate under the action of the third cylinder.

[0011] As a further optimization of the automatic gate cutting device for injection molding processing of this utility model: a fourth push plate and a fourth cylinder are provided above the injection molding processing station on the worktable. The fourth push plate is connected to the output shaft of the fourth cylinder. The output shaft of the fourth cylinder is perpendicular to the surface of the worktable. The fourth cylinder is mounted on the worktable by a fixing plate.

[0012] As a further optimization of the automatic sprue cutting device for injection molding processing of this utility model: a guide groove is provided on the worktable, the inlet end of the guide groove is connected to the outlet of the injection molding processing station, and the outlet end of the guide groove extends to the workpiece collection position.

[0013] Beneficial Effects: This invention positions the injection molded part using a baffle and a first push plate on the worktable, and removes the sprue using a drive motor and a rotary cutter. A limiting shaft prevents over-cutting and damage to the injection molded part. The moving frame, equipped with the drive motor and the first push plate, is driven by a first cylinder. During operation, the moving frame moves the first push plate to position the injection molded part and brings the rotary cutter close to the sprue for operation. After operation, the first cylinder and telescopic column ensure that all components automatically reset. Compared to manual operation, this device achieves mechanization and automation of sprue removal for injection molded parts, significantly improving efficiency and operational safety.

[0014] The preferred technical solution of this utility model is that the robotic arm, with the cooperation of the claw hook, can grab the injection molded parts in the injection molding machine and place them on the worktable. The rubber pad layer effectively prevents the injection molded parts from falling off during the transfer process. The pneumatic shears perform pre-shearing treatment on the injection molded parts, which facilitates the sprue removal operation of the injection molded parts at the processing station.

[0015] The preferred technical solution of this utility model is that the rotating table can adjust the coordinated work of the second cylinder, the second push plate, the third cylinder, the third push plate and the rotating table so that injection molded parts with the same or different directions of the sprue and the rotating cutter can be pushed to the injection molded part processing station, thereby improving the practicality of the device.

[0016] The preferred technical solution of this utility model is that the fourth cylinder and the fourth push plate can position the injection molded part in the processing position perpendicular to the worktable, thereby improving the accuracy of the device in cutting off the sprue of the injection molded part. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the automatic water-cutting device of this utility model;

[0018] Figure 2 This is a utility model Figure 1 Enlarged schematic diagram of the injection molding station at point A;

[0019] Figure 3 This is a schematic diagram of the injection molded part of this utility model being processed on the worktable;

[0020] The markings in the diagram are: 1. Workbench, 2. Baffle, 3. First push plate, 4. Telescopic column, 5. Moving frame, 6. Drive motor, 7. Rotary cutter, 8. Limiting shaft, 9. First cylinder, 10. Robotic arm, 11. Claw hook, 12. Pneumatic shears, 13. Second cylinder, 14. Second push plate, 15. Third cylinder, 16. Third push plate, 17. Rotary table, 18. Fourth cylinder, 19. Fourth push plate, 20. Fixed plate, 21. Guide groove, 22. Return spring, 23. Injection molded part. Detailed Implementation

[0021] like Figure 1 and Figure 2 As shown, an automatic gate cutting device for injection molding part processing includes a worktable 1, which provides a stable working platform for gate cutting of injection molded part 23.

[0022] A baffle 2 is fixedly installed on the workbench 1. A first push plate 3 is provided at a parallel position to the baffle 2. A processing station for cutting off the sprue of the injection molded part 23 is left between the first push plate 3 and the baffle 2. The baffle 2 and the first push plate 3 together perform lateral positioning of the injection molded part 23 at the processing station.

[0023] The first push plate 3 is connected to the movable frame 5 via a telescopic column 4. One end of the telescopic column 4 is fixed to the first push plate 3, and the other end slides through the movable frame 5. The movable frame 5 restricts the radial movement of the telescopic column 4. A return spring 22 is sleeved on the outside of the telescopic column 4, and both ends of the return spring 22 abut against the first push plate 3 and the movable frame 5. A drive motor 6 is fixedly installed on the movable frame 5. The output shaft of the drive motor 6 is connected to a rotary cutter 7. The rotary cutter 7 passes through the movable frame 5 and the first push plate 3. Limiting shafts 8 are provided on both sides of the rotary cutter 7. The limiting shafts 8 pass through the first push plate 3 and are fixed to the movable frame 5. The movable frame 5 is the skeleton for installing the drive motor 6, the rotary cutter 7, the limiting shafts 8, and the first push plate 3. It is the physical platform for the positioning action of the first push plate 3, the cutting action of the rotary cutter 7, and the over-cutting action of the limiting shafts 8.

[0024] The bottom of the movable frame 5 is provided with a first cylinder 9, which is fixedly installed on the worktable 1. An axial slide rail is provided on the outer side of the cylinder body of the first cylinder 9. The bottom of the movable frame 5 is provided with a sliding protrusion that engages with the slide rail. Driven by the first cylinder 9, the movable frame 5 moves toward the injection molding part 23 processing station through the cooperation of the sliding protrusion and the slide rail.

[0025] Driven by the first cylinder 9, the moving plate moves the first push plate 3, drive motor 6, rotary cutter 7, and limit shaft 8 together toward the injection molding part 23 processing station. During the movement, the first push plate 3 first contacts the injection molding part 23, and the first push plate 3 and the baffle 2 cooperate to perform lateral positioning of the injection molding part 23; next, the return spring 22 outside the telescopic column 4 between the first push plate 3 and the moving frame 5 enters the compressed state, and the rotary cutter 7 begins to contact the sprue of the injection molding part 23, cutting off the sprue of the injection molding part 23 under the action of the drive motor 6; then, since the contact surface of the limit shaft 8 is coplanar with the cutting surface of the rotary cutter 7, when the limit shaft 8 contacts the injection molding part 23, the rotary cutter 7 simultaneously completes the complete removal of the sprue, and the limit shaft 8 prevents the rotary cutter 7 from over-cutting and damaging the injection molding part 23; finally, under the action of the first cylinder 9, the moving frame 5 resets, thereby driving the drive motor 6, rotary cutter 7, and limit shaft 8 to reset together, and the first push plate 3 also resets under the action of the return spring 22.

[0026] A robotic arm 10 is slidably mounted on the track beam above the workbench 1. The forearm of the robotic arm 10 is equipped with a claw hook 11, which facilitates the robotic arm 10 in gripping the injection-molded part 23. The surface of the claw hook 11 is covered with a rubber pad with anti-slip textures. The rubber pad and anti-slip textures increase the friction between the claw hook 11 and the injection-molded part 23, preventing the injection-molded part 23 from falling during the gripping process.

[0027] The robotic arm 10 can transfer the molded injection part 23 formed in the injection molding machine to a designated position on the worktable 1. A pneumatic shear 12 is provided on the path of the robotic arm 10 to transfer the injection part 23 to the worktable 1. The pneumatic shear 12 is fixedly installed on the surface of the worktable 1. The pneumatic shear 12 is used to pre-cut the injection part 23 with excessive sprue residue, so as to facilitate the processing of the injection part 23 on the worktable 1.

[0028] like Figure 3 As shown, a second cylinder 13 is fixedly installed on the workbench 1. The output shaft of the second cylinder 13 is connected to a second push plate 14. Under the action of the second cylinder 13, the second push plate 14 pushes the injection molded part 23 located on one side of the second push plate 14 to the injection molded part 23 processing station. For the injection molded part 23 on the same side as the sprue and the rotary cutter 7, the robotic arm 10 grabs and places it on the second push plate 14, and then pushes it to the processing station, which improves the continuous operation capability of the device.

[0029] A third cylinder 15 is fixedly installed on the worktable 1. The output shaft axes of the third cylinder 15 and the second cylinder 13 intersect each other. The output shaft of the third cylinder 15 is connected to a third push plate 16. A rotary table 17 is installed on the surface of the worktable 1 on one side of the third push plate 16. Under the action of the third cylinder 15, the third push plate 16 pushes the injection molded part 23 located on the rotary table 17 to the second push plate 14. For injection molded parts 23 whose gate and rotary cutter 7 positions do not correspond, the robotic arm 10 places them on the rotary table 17. The rotary table 17 adjusts the gate direction of the injection molded part 23 to correspond with the position of the rotary cutter 7. The injection molded part 23 with the adjusted position is pushed by the third push plate 16 to the second push plate 14. The second push plate 14 then pushes the injection molded part 23 to the processing station.

[0030] During use, when the third push plate 16 is receiving the injection molded part 23 whose direction has been adjusted by the rotary table 17, the second push plate 14 can simultaneously move another injection molded part 23 that does not need to be adjusted or has already been adjusted to the processing station, reducing waiting time and improving overall production efficiency.

[0031] Above the processing station of injection molded part 23 on the worktable 1, there is a fourth push plate 19 and a fourth cylinder 18. The fourth push plate 19 is connected to the output shaft of the fourth cylinder 18. The output shaft of the fourth cylinder 18 is perpendicular to the surface of the worktable 1. The fourth cylinder 18 is installed on the worktable 1 through a fixing plate 20. Under the action of the fourth cylinder 18, the fourth push plate 19 vertically positions the injection molded part 23 at the processing station, which improves the accuracy of the gate cutting of the injection molded part 23.

[0032] The workbench 1 is provided with a guide groove 21. The inlet end of the guide groove 21 is connected to the outlet of the injection molding part 23 processing station, and the outlet end of the guide groove 21 extends to the workpiece collection position. The guide groove 21 can receive the injection molding part 23 that has completed the gate removal at the processing station and guide the injection molding part 23 that has completed the gate removal to the designated position.

[0033] The automatic sprue cutting device for injection molding of this utility model is used as follows: First, the robotic arm 10 picks up the molded injection part 23 from the injection molding machine. During the transfer to the worktable 1, the pneumatic shears 12 pre-cut the sprue of the injection part 23. Second, the robotic arm 10 places the injection part 23 onto the worktable 1. If the sprue direction needs adjustment, the rotary table 17 is used for direction correction, and the part is pushed from the third push plate 16 to the second push plate 14. Otherwise, the robotic arm 10 directly places the part onto the second push plate 14. Next, the second push plate 14 pushes the injection part 23 to the processing station. The third push plate 16 processes another injection molded part 23; at the processing station, the fourth push plate 19 vertically positions the injection molded part 23, and the first push plate 3 cooperates with the baffle 2 to horizontally position the injection molded part 23; then, under the action of the first cylinder 9, the rotating cutter 7 moves toward the positioned injection molded part 23. When the rotating cutter 7 completely cuts off the sprue, the limiting shaft 8 contacts the injection molded part 23. Subsequently, the first cylinder 9 resets the rotating cutter 7, the drive motor 6, and the moving frame 5, and the reset spring 22 resets the first push plate 3; finally, the processed injection molded part 23 is pushed out of the processing station by the next unprocessed injection molded part 23 and falls into the designated position through the guide groove 21.

Claims

1. An automatic gate-cutting device for injection molding parts, characterized in that: The system includes a workbench (1), on which parallel baffles (2) and a first push plate (3) are installed. The first push plate (3) and the baffles (2) form a processing station for cutting off the sprue of the injection molded part (23). The first push plate (3) is connected to a movable frame (5) via a telescopic column (4). One end of the telescopic column (4) is fixed to the first push plate (3), and the other end of the telescopic column (4) slides through the movable frame (5). The movable frame (5) restricts the radial movement of the telescopic column (4). A return spring (22) is sleeved on the outside of the telescopic column (4). Both ends of the return spring (22) abut against the first push plate (3) and the movable frame (5). The movable frame (5) is fixedly installed with... A drive motor (6) is connected to a rotary cutter (7) on its output shaft. The rotary cutter (7) passes through the movable frame (5) and the first push plate (3). Limiting shafts (8) are provided on both sides of the rotary cutter (7). The limiting shafts (8) pass through the first push plate (3) and are fixed on the movable frame (5). A first cylinder (9) is provided at the bottom of the movable frame (5). The first cylinder (9) is fixedly installed on the worktable (1). The movable frame (5) moves toward the injection molding part (23) processing station under the drive of the first cylinder (9), thereby driving the first push plate (3), drive motor (6), rotary cutter (7), and limiting shafts (8) to move together toward the injection molding part (23) processing station.

2. The automatic gate cutting device for injection molding parts processing according to claim 1, characterized in that: A robotic arm (10) is slidably installed on the track beam above the workbench (1), and a claw hook (11) is provided at the end of the forearm of the robotic arm (10).

3. An automatic gate-cutting device for injection molding parts processing according to claim 2, characterized in that: The surface of the claw hook (11) is covered with a rubber pad, and the surface of the rubber pad has anti-slip texture.

4. An automatic gate-cutting device for injection molding parts processing according to claim 2, characterized in that: A pneumatic shear (12) is provided on the path by which the robotic arm (10) transfers the injection molded part (23) to the worktable (1). The pneumatic shear (12) is fixedly installed on the surface of the worktable (1).

5. An automatic gate-cutting device for injection molding parts processing according to claim 1, characterized in that: A second cylinder (13) is fixedly installed on the workbench (1). The output shaft of the second cylinder (13) is connected to a second push plate (14). Under the action of the second cylinder (13), the second push plate (14) pushes the injection molded part (23) located on one side of the second push plate (14) to the injection molded part (23) processing station.

6. An automatic gate cutting device for injection molding parts processing according to claim 5, characterized in that: A third cylinder (15) is fixedly installed on the worktable (1). The output shaft axes of the third cylinder (15) and the second cylinder (13) intersect each other. The output shaft of the third cylinder (15) is connected to a third push plate (16). A rotary table (17) is installed on the surface of the worktable (1) on one side of the third push plate (16). Under the action of the third cylinder (15), the third push plate (16) pushes the injection molded part (23) located on the rotary table (17) to the second push plate (14).

7. An automatic gate cutting device for injection molding parts processing according to claim 1, characterized in that: A fourth push plate (19) and a fourth cylinder (18) are provided above the injection molding part (23) processing station on the workbench (1). The fourth push plate (19) is connected to the output shaft of the fourth cylinder (18). The output shaft of the fourth cylinder (18) is perpendicular to the surface of the workbench (1). The fourth cylinder (18) is installed on the workbench (1) through a fixing plate (20).

8. An automatic sprue cutting device for injection molding parts according to claim 1, characterized in that: The workbench (1) is provided with a guide groove (21). The inlet end of the guide groove (21) is connected to the outlet of the injection molding part (23) processing station, and the outlet end of the guide groove (21) extends to the workpiece collection position.

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