Suction cup robot structure of an injection molding machine

Abstract

The utility model discloses a kind of chuck mechanical hand structures of injection molding machine, belong to injection molding machine auxiliary equipment technical field, it includes fixed bolster, fixed bolster is rotatably connected with screw rod, gas pipe and first connecting pipe interface place are respectively connected with outer power source, fixed block is integrated with the driving mechanism used in cooperation with cooperation pressure sensor and outer power source, exhaust block is located below chuck main part;The utility model controls screw rod rotation by driving mechanism, drives movable block to move along screw rod axial direction, realizes accurate positioning in horizontal direction, electric telescopic link and screw rod collaborative action, workpiece is moved to specified position, outer power source is broken vacuum by a small amount of gas, exhaust block is synchronously moved downward, auxiliary stripping workpiece, by the cooperation between high-pressure airflow and semi-arc exhaust block, effectively remove workpiece surface pollutant, applicable to oil stain and dust in injection molding environment, double-layer suction nozzle structure reduces the risk of pollutant into chuck interior, prolongs service life.

Description

Technical Field

[0001] This utility model belongs to the technical field of injection molding machine auxiliary equipment, specifically a suction cup manipulator structure for an injection molding machine. Background Technology

[0002] In the field of injection molding machine production, suction cup robots, as a highly efficient automated part-picking device, are widely used in the gripping and handling of workpieces after injection molding. By forming negative pressure between the suction cup and the workpiece surface, they achieve stable adsorption and precise handling of the workpiece, which greatly improves production efficiency and reduces the intensity of manual labor.

[0003] However, in actual injection molding production environments, dust, oil, and other contaminants are inevitably present in the workspace. On the one hand, dust particles adhere to the suction cup and workpiece surface, forming an isolation layer that disrupts the tight fit between the suction cup and the workpiece, leading to air leakage and difficulty in maintaining negative pressure. On the other hand, oil generated during the injection molding process contaminates the workpiece surface, causing changes in surface tension and reducing the sealing performance between the suction cup and the workpiece. Existing suction cup robot structures lack effective mechanisms to deal with such contaminants. The presence of contaminants significantly affects the adhesion between the suction cup and the workpiece surface, resulting in a substantial reduction in suction force and making it easy for workpieces to fall off. This not only affects production efficiency but may also cause safety accidents, resulting in equipment damage and economic losses. Utility Model Content

[0004] To overcome the above-mentioned defects, this utility model provides a suction cup manipulator structure for injection molding machines, which solves the problem that when there are pollutants such as dust and oil in the working environment, the adhesion between the suction cup and the workpiece surface will be affected, thereby reducing the adsorption force.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a suction cup manipulator structure for an injection molding machine, comprising a fixed bracket, a lead screw rotatably connected inside the fixed bracket, a movable block threadedly connected to the outer side of the lead screw, a fixed block fixedly connected to the bottom of the movable block, an electric telescopic rod provided at the bottom of the fixed block, a movable plate connected to the output end of the electric telescopic rod, multiple suction cup bodies provided on the movable plate, the top of the suction cup body penetrating through the movable plate, a first connecting pipe connected to the top of the suction cup body, a double-layered suction nozzle at the bottom of the suction cup body, and fixed rods symmetrically installed at the bottom of the movable plate, the fixed rods being a combination of multiple round rods. The suction cup body is formed by the following: a pressure block is movably connected inside the fixed rod; a movable rod is fixedly connected to the bottom of the pressure block; an exhaust block is fixedly installed at the bottom of the movable rod; the exhaust block has a semi-arc structure and is located inside the suction cup body; multiple air nozzles are provided inside the exhaust block; a pressure sensor for use with the pressure block is installed inside the fixed rod; a second connecting pipe is connected between the exhaust blocks; an air supply pipe is installed at the other end of the second connecting pipe; an external power source is connected to the interface of the air supply pipe and the first connecting pipe; a drive mechanism for use with the pressure sensor and the external power source is integrated inside the fixed block; and the exhaust block is located below the suction cup body.

[0006] As a further embodiment of this utility model: the bottom of the fixed bracket has a symmetrical structure with a sliding rail connected to it, the bottom of the fixed bracket is connected to a protrusion, and the sliding rail has a groove for cooperating with the protrusion. A motor is fixedly installed on the outside of the fixed bracket, and the output end of the motor is coaxially fixedly connected to the lead screw.

[0007] As a further embodiment of this utility model: the movable block has an I-shaped structure, and the fixed bracket has a movable groove that cooperates with the movable block and the lead screw.

[0008] As a further embodiment of this utility model: the fixed rod and the movable rod are arranged in a semi-arc shape, and a spring is installed at the bottom of the pressure block, with the spring located between the inner bottom of the fixed rod and the bottom of the pressure block.

[0009] As a further embodiment of this utility model: the openings of the exhaust blocks all face outwards, and the diameter of the exhaust blocks is larger than the diameter of the suction cup body.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0011] The drive mechanism controls the rotation of the lead screw, which in turn moves the movable block along the lead screw axis to achieve precise horizontal positioning. An electric telescopic rod pushes the movable plate downwards, bringing the suction cup body close to the workpiece surface. When the pressure sensor detects that the pressure block is in contact with the workpiece surface, the drive mechanism triggers an external power source, such as an air pump. The air nozzle delivers high-pressure airflow through the air supply pipe and the second connecting pipe to blow away dust, oil, and other contaminants from the workpiece surface. Then, the external power source is switched to suction mode, creating a negative pressure inside the suction cup body through the first connecting pipe. The exhaust block retracts upwards under the action of the pressure block, bringing the suction cup body closer to the workpiece surface. The workpiece surface is fully adhered to, and the semi-circular exhaust block can adapt to workpieces of different shapes. The pressure sensor provides real-time feedback on the contact pressure to ensure uniform and sufficient adsorption force. The electric telescopic rod and lead screw work together to move the workpiece to the designated position. A small amount of gas is introduced from the external power source to break the vacuum, and the exhaust block moves downward synchronously to assist in peeling off the workpiece. Through the interaction between the high-pressure airflow and the semi-circular exhaust block, contaminants on the workpiece surface can be effectively removed. It is especially suitable for oil and dust in the injection molding environment. The double-layer suction nozzle structure reduces the risk of contaminants entering the suction cup and extends its service life.

[0012] The bottom of the fixed bracket engages with the groove inside the slide rail via a protrusion, ensuring precise guidance during sliding. This allows the fixed bracket to move only along the direction of the slide rail, reducing swaying and offset, and guaranteeing the stability and accuracy of the entire robot's horizontal movement. The symmetrical structure of the slide rail evenly distributes the weight of the fixed bracket and the various components mounted on it, improving the overall load-bearing capacity. The motor output end is coaxially and fixedly connected to the lead screw, reducing energy loss and transmission errors during transmission, improving the efficiency and precision of the entire transmission system. This facilitates precise control of the robot's movements and meets the positioning accuracy requirements in different working scenarios. Attached Figure Description

[0013] Figure 1 This is a first-view schematic diagram of the overall structure of this utility model;

[0014] Figure 2 This is a second-view schematic diagram of the overall structure of this utility model;

[0015] Figure 3 This is a schematic diagram of the disassembled structure of this utility model;

[0016] Figure 4 This is a schematic diagram showing the main structural cross-section of this utility model.

[0017] In the diagram: 1. Fixed bracket; 2. Slide rail; 3. Movable block; 4. Motor; 5. Lead screw; 6. Movable groove; 7. Fixed block; 8. Electric telescopic rod; 9. Movable plate; 10. Suction cup body; 11. First connecting pipe; 12. Exhaust block; 13. Fixed rod; 14. Air nozzle; 15. Air supply pipe; 16. Movable rod; 17. Pressure block; 18. Spring; 19. Pressure sensor; 20. Second connecting pipe. Detailed Implementation

[0018] The technical solution of this patent will be further described in detail below with reference to specific embodiments.

[0019] like Figures 1-4 As shown, this utility model provides a technical solution:

[0020] A suction cup manipulator structure for an injection molding machine includes a fixed bracket 1, a lead screw 5 rotatably connected inside the fixed bracket 1, a movable block 3 threadedly connected to the outside of the lead screw 5, a fixed block 7 fixedly connected to the bottom of the movable block 3, an electric telescopic rod 8 at the bottom of the fixed block 7, a movable plate 9 connected to the output end of the electric telescopic rod 8, multiple suction cup bodies 10 mounted on the movable plate 9, the top of the suction cup body 10 penetrating through the movable plate 9, a first connecting pipe 11 connecting the top of the suction cup body 10, a double-layered suction nozzle at the bottom of the suction cup body 10, and fixed rods 13 symmetrically fixedly mounted at the bottom of the movable plate 9, the fixed rods 13 being composed of multiple sets of round rods, and a pressure rod movably connected inside the fixed rods 13. Block 17, the bottom of the pressure block 17 is fixedly connected to a movable rod 16, the bottom of the movable rod 16 is fixedly installed with an exhaust block 12, the exhaust block 12 has a semi-arc structure and is located inside the suction cup body 10, the exhaust block 12 is provided with multiple sets of air nozzles 14 inside the exhaust block 12, the fixed rod 13 is installed with a pressure sensor 19 for use with the pressure block 17, the exhaust blocks 12 are connected by a second connecting pipe 20, the other end of the second connecting pipe 20 is installed with an air supply pipe 15, the air supply pipe 15 and the interface of the first connecting pipe 11 are respectively connected to an external power source, the fixed block 7 integrates a drive mechanism for use with the pressure sensor 19 and the external power source, the exhaust block 12 is located below the suction cup body 10;

[0021] Specifically, during use, the drive mechanism controls the lead screw 5 to rotate, causing the movable block 3 to move along the axial direction of the lead screw 5, achieving precise horizontal positioning. The electric telescopic rod 8 pushes the movable plate 9 down, bringing the suction cup body 10 close to the workpiece surface. When the pressure sensor 19 detects that the pressure block 17 is in contact with the workpiece surface, the drive mechanism triggers an external power source, such as an air pump. The air nozzle 14 delivers high-pressure airflow through the air supply pipe 15 and the second connecting pipe 20 to blow away dust, oil, and other contaminants from the workpiece surface. Then, the external power source is switched to the suction mode, creating a negative pressure inside the suction cup body 10 through the first connecting pipe 11. The exhaust block 12 is pushed upward by the pressure block 17. The suction cup body 10 contracts to fully adhere to the workpiece surface, while the semi-circular exhaust block 12 can adapt to workpieces of different shapes. The pressure sensor 19 provides real-time feedback on the contact pressure to ensure uniform and sufficient adsorption force. The electric telescopic rod 8 and the lead screw 5 work together to move the workpiece to the designated position. A small amount of gas is introduced from the external power source to break the vacuum, and the exhaust block 12 moves downward synchronously to assist in peeling off the workpiece. Through the high-pressure airflow and the cooperation between the semi-circular exhaust block 12, contaminants on the workpiece surface can be effectively removed. It is especially suitable for oil and dust in the injection molding environment. The double-layer suction nozzle structure reduces the risk of contaminants entering the suction cup and extends its service life.

[0022] The bottom of the fixed bracket 1 is symmetrically connected to the slide rail 2. The bottom of the fixed bracket 1 is connected to the protrusion, and the slide rail 2 is provided with a groove for matching the protrusion. The motor 4 is fixedly installed on the outside of the fixed bracket 1. The output end of the motor 4 is coaxially fixedly connected to the lead screw 5. The movable block 3 is an I-shaped structure, and the fixed bracket 1 is provided with a movable groove 6 for matching the movable block 3 and the lead screw 5.

[0023] Specifically, the bottom of the fixed bracket 1 engages with the slide groove in the slide rail 2 via a protrusion, ensuring precise guidance during sliding and allowing it to move only along the direction of the slide rail 2. This reduces swaying and offset, guaranteeing the stability and accuracy of the entire robot's horizontal movement. The symmetrical structure of the slide rail 2 evenly distributes the weight of the fixed bracket 1 and the various components mounted on it, improving the overall load-bearing capacity. The output end of the motor 4 is coaxially and fixedly connected to the lead screw 5, reducing energy loss and transmission errors during transmission and improving the efficiency and precision of the entire transmission system. This facilitates precise control of the robot's movements and meets the positioning accuracy requirements in different work scenarios. The movable block 3 adopts an I-shaped structure, which engages with the movable groove 6 in the fixed bracket 1, allowing the movable block 3 to move stably within the movable groove 6 under the drive of the lead screw 5. The I-shaped structure increases the contact area between the movable block 3 and the movable groove 6, improving the stability and load-bearing capacity of the structure.

[0024] The fixed rod 13 and the movable rod 16 are arranged in a semi-arc structure. A spring 18 is installed at the bottom of the pressure block 17. The spring 18 is located between the bottom of the fixed rod 13 and the bottom of the pressure block 17. The openings of the exhaust block 12 all face outward. The diameter of the exhaust block 12 is larger than the diameter of the suction cup body 10.

[0025] Specifically, the outward opening of the exhaust block 12 helps to blow away dust from the surface of the workpiece, ensuring the cleanliness and quality of the workpiece surface;

[0026] The working principle of this utility model is as follows:

[0027] First, the drive mechanism controls the motor 4 to drive the lead screw 5 to rotate, the movable block 3 moves along the axis of the lead screw 5, and at the same time the fixed bracket 1 slides in the slide groove of the slide rail 2 through the bottom protrusion to achieve precise horizontal positioning. The electric telescopic rod 8 pushes the movable plate 9 down, so that the suction cup body 10 is close to the surface of the workpiece.

[0028] Secondly, when the pressure sensor 19 detects that the pressure block 17 is in contact with the workpiece surface, the drive mechanism triggers the air pump. At this time, the air nozzle 14 delivers high-pressure airflow through the air supply pipe 15 and the second connecting pipe 20. Since the air nozzle 14 is located inside the semi-arc exhaust block 12, the ejected airflow converges and directionally impacts the workpiece surface, completing the efficient blowing of dust and oil stains before the suction cup body 10 contacts the workpiece.

[0029] It is worth mentioning that the semi-circular exhaust block 12 can not only wrap around the surface of complex workpieces to improve the cleaning effect, but its structure with a diameter larger than that of the suction cup body 10 can also prevent pollutants from spreading to the adsorption area during blowing. At the same time, the spring 18 at the bottom of the pressure block 17 enables the exhaust block 12 to adapt to the undulations of the workpiece surface and ensure uniform blowing pressure.

[0030] Finally, after the purging is completed, the external power source switches to the suction mode, and the suction cup body 10 forms a negative pressure to adsorb the workpiece. The exhaust block 12 retracts upward under the action of the pressure block 17 to avoid the adsorption area and ensure that the suction cup is fully attached to the surface of the workpiece. The pressure sensor 19 monitors the adsorption force in real time. After being transported to the designated position, the external power source introduces a small amount of gas to break the vacuum, and the exhaust block 12 moves downward simultaneously to assist in peeling off the workpiece.

[0031] The preferred embodiments of the present invention have been described in detail above. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A structure of a suction cup robot of an injection molding machine, comprising a fixed support (1), characterized in that: A lead screw (5) is rotatably connected inside the fixed bracket (1). A movable block (3) is threadedly connected to the outside of the lead screw (5). A fixed block (7) is fixedly connected to the bottom of the movable block (3). An electric telescopic rod (8) is provided at the bottom of the fixed block (7). A movable plate (9) is connected to the output end of the electric telescopic rod (8). Multiple suction cup bodies (10) are provided on the movable plate (9). The top of the suction cup body (10) passes through the movable plate (9). A first connecting pipe (11) is connected to the top of the suction cup body (10). The suction nozzle at the bottom of the suction cup body (10) has a double-layer structure. A fixed rod (13) is fixedly installed at the bottom of the movable plate (9) in a symmetrical structure. The fixed rod (13) is composed of multiple round rods. A pressure block (17) is movably connected inside the fixed rod (13). The bottom of the pressure block (17) is fixed. A movable rod (16) is fixedly connected to the suction cup body (10). An exhaust block (12) is fixedly installed at the bottom of the movable rod (16). The exhaust block (12) has a semi-arc structure and is located inside the suction cup body (10). Multiple air nozzles (14) are provided inside the exhaust block (12). A pressure sensor (19) is installed inside the fixed rod (13) to cooperate with the pressure block (17). A second connecting pipe (20) is connected between the exhaust blocks (12). An air supply pipe (15) is installed at the other end of the second connecting pipe (20). An external power source is connected to the interface of the air supply pipe (15) and the first connecting pipe (11). A drive mechanism is integrated inside the fixed block (7) to cooperate with the pressure sensor (19) and the external power source. The exhaust block (12) is located below the suction cup body (10).

2. The structure of a mechanical hand of a suction cup of an injection molding machine according to claim 1, characterized in that: The bottom of the fixed bracket (1) is symmetrically connected to a slide rail (2). The bottom of the fixed bracket (1) is connected to a protrusion, and the slide rail (2) is provided with a groove for use with the protrusion. A motor (4) is fixedly installed on the outside of the fixed bracket (1), and the output end of the motor (4) is coaxially fixedly connected to the lead screw (5).

3. The suction cup robot structure for an injection molding machine according to claim 2, characterized in that: The movable block (3) has an I-shaped structure, and the fixed bracket (1) has a movable groove (6) that works with the movable block (3) and the lead screw (5).

4. The suction cup robot structure for an injection molding machine according to claim 3, characterized in that: The fixed rod (13) and the movable rod (16) are arranged in a semi-arc structure. A spring (18) is installed at the bottom of the pressure block (17). The spring (18) is located between the bottom of the fixed rod (13) and the bottom of the pressure block (17).

5. The suction cup robot structure for an injection molding machine according to claim 4, characterized in that: The openings of the exhaust block (12) all face outwards, and the diameter of the exhaust block (12) is larger than the diameter of the suction cup body (10).

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