Positioning device for injection molding robot

Abstract

The utility model belongs to mechanical equipment technical field, concretely relates to a positioning device for injection molding manipulator, including the shell, the inner wall fixed mounting of shell has the blanking device, the bottom fixed mounting of shell has the bottom plate, the blanking device includes blanking hopper, the blanking hopper fixed mounting is in the inside of shell, the surface of blanking hopper rotatory mounting has no.

Description

Technical Field

[0001] This utility model belongs to the field of mechanical equipment technology, and specifically relates to a positioning device for injection molding robots. Background Technology

[0002] In automated injection molding production lines, the core function of robotic arms is to replace manual labor in processes such as gripping, handling, despruing, inspection, and palletizing injection molded parts. Positioning devices, acting as a "bridge" between the robotic arm and the injection molded parts, molds, or subsequent workstations, directly impact gripping accuracy, production efficiency, and product quality. Current technologies for positioning injection molding robotic arms have many limitations, highlighting the necessity of optimizing positioning devices.

[0003] Chinese patent publication number CN219337774U discloses a positioning and grasping robot, including a mounting component. A base is contacted on the mounting component, a robotic arm is mounted on the base, and a positioning gripper is mounted on the robotic arm. A fastening bolt is movably connected within the base, and the fastening bolt is threadedly connected to the mounting component. A limit mechanism is provided on both the fastening bolt and the base. This invention, through the coordinated use of the robotic arm and positioning gripper, enables precise positioning and grasping actions by the robotic arm. The fastening bolt secures the base, ensuring a stable connection for the robotic arm. Furthermore, the fastening bolt is limited by mechanisms such as locking levers, locking holes, and springs, preventing loosening and ensuring the base remains stable over a long period.

[0004] However, the current positioning and gripping robots have the following problems: the robot arm has difficulty predicting the position of the component when gripping, resulting in a low gripping success rate and frequent occurrences of missing or misaligned gripping. Therefore, we propose a positioning device for injection molding robots. Utility Model Content

[0005] The purpose of this invention is to provide a positioning device for injection molding robots that can solve the problem of inaccurate clamping in related technologies.

[0006] The specific technical solution adopted by this utility model is as follows: A positioning device for an injection molding robot includes a housing. A feeding device is fixedly installed on the inner wall of the housing, and a base plate is fixedly installed on the bottom of the housing. The feeding device includes a feeding funnel, which is fixedly installed inside the housing. A movable plate is rotatably mounted on the surface of the feeding funnel, and an isolation plate is rotatably mounted on the surface of the feeding funnel. The isolation plate is connected to the surface of the movable plate. A square plate is provided on the outer wall of the feeding funnel, and the square plate is threadedly connected to the outer wall of the feeding funnel with a screw. A square connecting post is fixedly installed on the surface of the square plate. A torsion spring is provided between the feeding funnel and the movable plate. When the component falls, the torsion spring generates a directional torque through pre-stored torsional elastic potential energy, driving the component to rotate around an axis back to a preset position, thereby resetting the movable plate and the isolation plate.

[0007] Preferably, a sleeve plate is fixedly installed inside the outer shell, and a second movable plate is rotatably installed inside the sleeve plate. A spring is fixedly installed between the sleeve plate and the second movable plate. The spring has a large deformation range and can adapt to the small displacement of the component caused by installation error and force offset, ensuring that it always maintains contact or buffering effect under different working conditions.

[0008] Preferably, the outer wall of the sleeve is provided with a circular plate, the circular plate is threadedly connected to the outer wall of the sleeve with a second screw, and a circular connecting post is fixedly installed on the surface of the circular plate.

[0009] Preferably, the number of the first screw is set to four, arranged in pairs and symmetrical along the vertical central axis of the square plate; the number of the second screw is set to five, arranged in a circumferential array along the circular connecting column; the first screw, the square plate, the circular plate, and the second screw are arranged in pairs and symmetrical along the vertical central axis of the feeding funnel; the number of the square connecting column and the circular connecting column are each set to two, and symmetrical along the vertical central axis of the feeding funnel.

[0010] Preferably, the housing is provided with a clamping device inside, the clamping device including a connecting plate, the connecting plate being fixedly installed at the bottom of the base plate, a reciprocating screw being rotatably installed on the inner wall of the connecting plate, and a T-shaped plate being threaded on the circumferential surface of the reciprocating screw, the T-shaped plate being able to stably clamp and position the component.

[0011] Preferably, a spring column is slidably installed inside the T-shaped plate, a clamping plate is fixedly installed on the surface of the spring column, a spring is provided between the clamping plate and the T-shaped plate, the spring column is inside the spring, and the number of springs is set to four, in pairs and symmetrical along the vertical central axis of the base plate. The number of T-shaped plates and clamping plates is set to two and symmetrical along the vertical central axis of the base plate.

[0012] The technical effects achieved by this utility model are as follows: This invention, through the arrangement of a feeding hopper, a first movable plate, an isolation plate, a second movable plate, and a spring sheet, ensures that when the component falls from the feeding hopper, the first movable plate moves to both sides, causing the isolation plate to move into the feeding hopper to isolate the next cylinder. When the cylinder falls to the surface of the second movable plate, the spring sheet presses inward, thus preventing the cylinder from directly colliding with the base plate during its fall, which would generate excessive instantaneous impact force, leading to cracking, breakage, deformation, or damage to the internal structure.

[0013] This invention, through the arrangement of a reciprocating lead screw, a T-shaped plate, and a clamping plate, enables the T-shaped plate and clamping plate to move left and right and contact the cylinder when the cylinder falls to the base plate. This clamping and positioning method avoids the mechanical claw from deviating from the preset area due to component placement errors or gripping angle deviations, thus preventing the mechanical claw from being unable to grip. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the entire utility model; Figure 2 This is a schematic diagram of the structure of the feeding device of this utility model; Figure 3 This is a schematic diagram of the structure of the movable plate and the isolation plate of this utility model; Figure 4 This is a schematic diagram of the structure of the second movable plate and the spring piece of this utility model; Figure 5 This is a schematic diagram of the structure of the clamping device of this utility model.

[0015] The attached diagram lists the components represented by each number as follows: 1. Outer shell; 2. Feeding device; 20. Feeding funnel; 21. Movable plate No. 1; 22. Isolation plate; 23. Square plate; 24. Screw No. 1; 25. Square connecting column; 26. Sleeve plate; 27. Movable plate No. 2; 28. Spring; 29. ​​Circular plate; 210. Screw No. 2; 211. Circular connecting column; 3. Clamping device; 30. Connecting plate; 31. Reciprocating screw; 32. T-shaped plate; 33. Spring column; 34. Clamping plate; 35. Spring; 4. Base plate. Detailed Implementation

[0016] To make the objectives and advantages of this utility model clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the following text is merely used to describe one or more specific embodiments of this utility model and does not strictly limit the scope of protection specifically claimed by this utility model.

[0017] like Figure 1-5As shown, a positioning device for an injection molding robot includes a housing 1. A feeding device 2 is fixedly installed on the inner wall of the housing 1, and a base plate 4 is fixedly installed on the bottom of the housing 1. The feeding device 2 includes a feeding funnel 20, which is fixedly installed inside the housing 1. A first movable plate 21 is rotatably installed on the surface of the feeding funnel 20, and an isolation plate 22 is rotatably installed on the surface of the feeding funnel 20. The isolation plate 22 is connected to the surface of the first movable plate 21. A square plate 23 is provided on the outer wall of the feeding funnel 20, and the square plate 23 is threadedly connected to the outer wall of the feeding funnel 20 by a first screw 24. A square connecting post 25 is fixedly installed on the surface of the square plate 23. A torsion spring is provided between the feeding funnel 20 and the first movable plate 21. The isolation plate 22 enables the individual cylinders to maintain a relatively uniform posture in the channel, avoiding the posture chaos caused by the disorderly stacking of multiple components, and facilitating the gripping of the robot arm. A sleeve plate 26 is fixedly installed inside the outer casing 1. A second movable plate 27 is rotatably installed inside the sleeve plate 26. A spring piece 28 is fixedly installed between the sleeve plate 26 and the second movable plate 27. The spring piece 28 converts the instantaneous impact force into elastic potential energy through bending and compression deformation, thereby reducing damage to the appearance and performance of the component. A circular plate 29 is provided on the outer wall of the sleeve plate 26. The circular plate 29 is threadedly connected to the outer wall of the sleeve plate 26 by a second screw 210. A circular connecting post 211 is fixedly installed on the surface of the circular plate 29. The number of screws 24 is set to four, in pairs, and symmetrical along the vertical central axis of the square plate 23. The number of screws 210 is set to five, and they are arranged in a circular array along the circumference of the circular connecting post 211. Screws 24, square plate 23, circular plate 29 and screws 210 are in pairs, and symmetrical along the vertical central axis of the feeding funnel 20. The number of square connecting posts 25 and circular connecting posts 211 is set to two each, and they are symmetrical along the vertical central axis of the feeding funnel 20. Based on the above structure, the robotic arm waits outside the outer casing 1. A cylinder is then added to the feeding hopper 20. Due to gravity, the cylinder falls downwards, moving along the inner wall of the feeding hopper 20. When the cylinder reaches the surface of the first movable plate 21, the first movable plate 21 rotates outwards under force, simultaneously compressing the torsion spring. This rotation of the first movable plate 21 causes one side of the isolation plate 22 to move. Through the lever principle, the other side of the isolation plate 22 rotates towards the inner wall of the feeding hopper 20, ultimately blocking the previous cylinder. This ensures that only one cylinder can detach and fall onto the surface of the second movable plate 27 at a time. The cylinder is intermittently conveyed. Since the cylinder has no planar reference, if it is continuously conveyed to the second movable plate 27, it is easy to roll and deviate due to mutual compression. It is necessary to adapt to the rolling characteristics of the cylinder and enhance the positioning stability. When the cylinder reaches the surface of the second movable plate 27, the second movable plate 27 on both sides will rotate outward due to its own gravity. At the same time, the second movable plate 27 will compress the spring 28. If the cylinder falls directly, it will produce a rigid collision, causing the workpiece to bounce or even slide off the edge of the base plate 4. At this time, it needs to be picked up and reset manually. The impact acceleration generated when the cylinder continues to fall is absorbed by the second movable plate 27 and the spring 28, so that when it finally falls to the base plate 4, the remaining kinetic energy is not enough to cause damage or bounce.

[0018] like Figure 1-5 As shown, a clamping device 3 is provided inside the outer casing 1. The clamping device 3 includes a connecting plate 30, which is fixedly installed on the bottom of the base plate 4. A reciprocating screw 31 is rotatably installed on the inner wall of the connecting plate 30. A T-shaped plate 32 is threaded on the circumferential surface of the reciprocating screw 31. The reciprocating screw 31 simplifies the transmission structure and improves the response speed. A spring post 33 is slidably installed inside the T-shaped plate 32. A clamping plate 34 is fixedly installed on the surface of the spring post 33. A spring 35 is provided between the clamping plate 34 and the T-shaped plate 32. The spring post 33 is inside the spring 35. There are four springs 35, arranged in pairs and symmetrical along the vertical central axis of the base plate 4. There are two T-shaped plates 32 and two clamping plates 34, which are also symmetrical along the vertical central axis of the base plate 4. The elastic deformation of the springs 35 can absorb the impact force during the clamping process and avoid damage to the clamping element and the clamped object due to rigid contact.

[0019] According to the above structure, when the cylinder falls to the base plate 4, gravity prevents the cylinder from accurately falling to the center of the base plate 4, causing the robotic arm to be unable to accurately clamp during the gripping process. At this time, the motor drives the reciprocating screw 31 to rotate, and the rotation of the reciprocating screw 31 drives the T-shaped plate 32 to move back and forth. The sliding of the T-shaped plate 32 drives the clamping plate 34 to move left and right, so that the clamping plate 34 contacts the cylinder and clamps the cylinder to the center. When the clamping plate 34 contacts the cylinder, it pre-fixes the cylinder in a preset position to prevent the cylinder from rolling, tilting or shifting in position, and to prevent the robotic arm from colliding with surrounding equipment or personnel due to the cylinder's position shift during the gripping process.

[0020] The above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. Structures, devices, and operating methods not specifically described or explained in this utility model, unless otherwise specified or limited, shall be implemented using conventional methods in the field.

Claims

1. A positioning device for an injection molding robot, characterized in that: Includes an outer shell (1), the inner wall of which is fixedly installed with a feeding device (2), and the bottom of which is fixedly installed with a bottom plate (4). The feeding device (2) includes a feeding funnel (20). The feeding funnel (20) is fixedly installed inside the outer shell (1). A movable plate (21) is rotatably installed on the surface of the feeding funnel (20). An isolation plate (22) is rotatably installed on the surface of the feeding funnel (20). The isolation plate (22) is connected to the surface of the movable plate (21). A square plate (23) is provided on the outer wall of the feeding funnel (20). The square plate (23) is threadedly connected to the outer wall of the feeding funnel (20) by a screw (24). A square connecting column (25) is fixedly installed on the surface of the square plate (23). A torsion spring is provided between the feeding funnel (20) and the movable plate (21).

2. The positioning device for an injection molding robot according to claim 1, characterized in that: A sleeve plate (26) is fixedly installed inside the outer shell (1), and a second movable plate (27) is rotatably installed inside the sleeve plate (26). A spring piece (28) is fixedly installed between the sleeve plate (26) and the second movable plate (27).

3. A positioning device for an injection molding robot according to claim 2, characterized in that: The outer wall of the sleeve (26) is provided with a circular plate (29), the circular plate (29) is threadedly connected to the outer wall of the sleeve (26) by a second screw (210), and a circular connecting column (211) is fixedly installed on the surface of the circular plate (29).

4. A positioning device for an injection molding robot according to claim 3, characterized in that: The number of the first screw (24) is set to four, in pairs, and symmetrical along the vertical central axis of the square plate (23). The number of the second screw (210) is set to five, and arranged in a circular array along the circumference of the circular connecting column (211). The first screw (24), the square plate (23), the circular plate (29) and the second screw (210) are in pairs, and symmetrical along the vertical central axis of the feeding funnel (20). The number of the square connecting column (25) and the circular connecting column (211) is set to two, and symmetrical along the vertical central axis of the feeding funnel (20).

5. A positioning device for an injection molding robot according to claim 1, characterized in that: The housing (1) is provided with a clamping device (3), which includes a connecting plate (30). The connecting plate (30) is fixedly installed at the bottom of the base plate (4). A reciprocating screw (31) is rotatably installed on the inner wall of the connecting plate (30), and a T-shaped plate (32) is threaded on the circumferential surface of the reciprocating screw (31).

6. A positioning device for an injection molding robot according to claim 5, characterized in that: A spring column (33) is slidably installed inside the T-shaped plate (32). A clamping plate (34) is fixedly installed on the surface of the spring column (33). A spring (35) is provided between the clamping plate (34) and the T-shaped plate (32). The spring column (33) is inside the spring (35). There are four springs (35), arranged in pairs and symmetrical along the vertical central axis of the base plate (4). There are two T-shaped plates (32) and two clamping plates (34), which are symmetrical along the vertical central axis of the base plate (4).

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