Grabbing mechanical arm of injection molding machine

Abstract

The utility model discloses an injection molding machine grabbing mechanical arm which comprises a first support and a mounting frame, the first support is arranged on one side above the mounting frame, a connecting frame is arranged below the mounting frame, a shear shank is rotationally arranged below the connecting frame, and the cylinder body end and the cylinder rod end of an electric push rod are rotationally connected with the top end of the shear shank. The scissor frame is started through the electric push rod to deform, the distance among the four suction cups can be changed through deformation, the object grabbing range can be enlarged by modifying the distance among the four suction cups, and therefore the grabbing firmness of objects with different sizes is improved; and lubricating oil is injected into the oil tank and flows along the pipeline, the balls are triggered to roll in the moving process of the first telescopic plate and the second telescopic plate, a small amount of lubricating oil flows out, and the sliding smoothness of the first telescopic plate and the second telescopic plate in the second support is reduced under the action of the lubricating oil.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical arms, in particular to a grabbing mechanical arm for an injection molding machine. Background Art

[0002] A robotic arm is a complex system with high precision, multiple inputs and multiple outputs, high nonlinearity, and strong coupling. Due to its unique operational flexibility, it has been widely used in industrial assembly, safety and explosion-proof fields. After the injection molding machine processes and produces the product, the robotic arm is needed to grab and remove the product to achieve automation.

[0003] When this type of injection molding machine grasping robot arm on the market is working, the objects made by the injection molding machine will be customized according to the needs, and their shapes and sizes are different. The single suction mechanism and the fixed suction range will cause the grasping force on the object to be unstable, which will cause the grasping to be unstable and may cause the object to fall during the residence process. Utility Model Content

[0004] The utility model aims to provide a grabbing mechanical arm for an injection molding machine to solve the problems of the device proposed in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a grabbing robot arm for an injection molding machine, comprising a bracket one and a mounting frame, wherein the bracket one is arranged on one side above the mounting frame, a connecting frame is arranged below the mounting frame, a scissors frame is rotatably arranged below the connecting frame, and a suction cup is installed at the bottom end of the scissors frame, a bracket three is passed through the top of one end of the scissors frame, and an electric push rod is installed at one end of the top of the bracket three, the cylinder body end and the cylinder rod end of the electric push rod are both rotatably connected to the top end of the scissors frame, a slide groove is arranged at one end of the connecting frame, a slide plate is fixed to one end of the bracket three, and the slide plate is inserted into the slide groove.

[0006] Preferably, a bracket two is slidably arranged on the bracket one, a screw is rotatably arranged inside the bracket one, and the screw and the bracket two are threadedly penetrated, a servo motor one for driving the screw to rotate is installed at one end of the bracket one, a telescopic plate one is arranged inside the bracket two, the mounting frame is fixed to the bottom end of the telescopic plate one, a cylinder two is installed on one side of the telescopic plate one, a cylinder four is installed at one end of the top of the bracket two, and the cylinder rod end of the cylinder four is fixedly connected to the telescopic plate one.

[0007] Preferably, a telescopic plate 2 is arranged inside the bracket 2 on the right side of the telescopic plate 1, and a cylinder 3 is installed on the side of the telescopic plate 2 away from the telescopic plate 1, a cylinder 1 is installed at one end located at the bottom of the bracket 2, and the cylinder rod end of the cylinder 1 is fixedly connected to the telescopic plate 2, and a clamping claw is installed at the bottom end of the telescopic plate 2.

[0008] Preferably, guide plates are fixed to the front and rear inner walls of the second bracket, grooves are provided at the front and rear exteriors of the first and second telescopic plates, and the second bracket is embedded in the front and rear ends of the first and second telescopic plates through the grooves.

[0009] Preferably, a servo motor 2 is installed at one end inside the mounting frame, and a gear 1 is fixed outside the output shaft of the servo motor 2. A gear 2 is fixed at the middle position of the top end of the connecting frame, and the gear 2 and the servo motor 2 are meshingly connected.

[0010] Preferably, oil tanks are fixed to both front and rear ends of the telescopic plate 1 and the telescopic plate 2, and a pipe is fixed to the bottom end of the oil tank, the bottom end of the pipe extends to the top of the groove, a ball is rotated inside the end of the pipe away from the oil tank, and the ball is tightly fitted to the top of the guide plate.

[0011] Compared with the prior art, the beneficial effects of the utility model are: first, the electric push rod starts the scissors frame to deform, and the deformation will change the distance between the four suction cups. By modifying the distance between the four suction cups, the grasping range of objects can be expanded, thereby improving the firmness of grasping objects of different sizes; second, lubricating oil is injected into the oil tank, and the lubricating oil flows along the pipeline. During the movement of the telescopic plate one and the telescopic plate two, the ball bearings are triggered to roll, and a small amount of lubricating oil flows out. The lubricating oil is used to reduce the smoothness of the sliding of the telescopic plate one and the telescopic plate two in the bracket two. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0013] Figure 2 It is a schematic diagram of a partial three-dimensional cross-sectional structure of the utility model;

[0014] Figure 3 It is a partial three-dimensional structural schematic diagram of the utility model;

[0015] Figure 4 This is a schematic diagram of a three-dimensional structure of a scissor frame and a connecting frame connected to the utility model;

[0016] Figure 5 This is a schematic diagram of the three-dimensional structure of the scissors rack of the utility model;

[0017] Figure 6 It is a schematic diagram of the cross-sectional three-dimensional structure of the oil tank of the utility model.

[0018] In the figure: 1. Bracket 1; 2. Screw; 3. Servo motor 1; 4. Cylinder 1; 5. Clamping claw; 6. Mounting frame; 7. Guide plate; 8. Bracket 2; 9. Cylinder 2; 10. Telescopic plate 1; 11. Telescopic plate 2; 12. Cylinder 3; 13. Cylinder 4; 14. Oil tank; 15. Groove; 16. Gear 1; 17. Suction cup; 18. Connecting frame; 19. Gear 2; 20. Servo motor 2; 21. Scissor frame; 22. Slide; 23. Bracket 3; 24. Slide plate; 25. Electric push rod; 26. Ball bearing; 27. Pipeline. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] It should be noted that, in the description of the present invention, the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc. indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0021] Furthermore, it should be understood that for the sake of ease of description, the sizes of the various components shown in the drawings are not drawn according to actual proportions. For example, the thickness or width of certain layers may be exaggerated relative to other layers.

[0022] It should be noted that like reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined or described in one drawing, it will not require further detailed discussion and description in the description of the subsequent drawings.

[0023] See also Figure 1-6The utility model provides an embodiment: an injection molding machine grabbing robot arm, including a bracket 1 and a mounting frame 6, the bracket 1 is arranged on one side above the mounting frame 6, wherein the bracket 1 and the mounting frame 6 support the entire robot arm, a connecting frame 18 is arranged below the mounting frame 6, a scissors frame 21 is rotatably arranged below the connecting frame 18, the scissors frame 21 is a scissors frame bracket, and the two cross plates are rotatably connected, and a suction cup 17 is installed at the bottom end of the scissors frame 21, a bracket three 23 is penetrated at the top of one end of the scissors frame 21, and an electric push rod 25 is installed at one end of the top of the bracket three 23, the cylinder end and the cylinder rod end of the electric push rod 25 are both rotatably connected to the top of the scissors frame 21, a slide groove 22 is arranged at one end of the connecting frame 18, a slide plate 24 is fixed at one end of the bracket three 23, and the slide plate 24 is inserted into the slide groove 22. When the electric push rod 25 is expanded or retracted, the scissor frame 21 is deformed, and the bracket 23 is displaced. At this time, the slide plate 24 slides along the slide groove 22, thereby adjusting the distance between the four suction cups 17, thereby improving the firmness of the object.

[0024] A bracket 28 is slidably arranged on the bracket 1, a screw rod 2 is rotatably arranged inside the bracket 1, and the screw rod 2 and the bracket 28 are threadedly penetrated, a servo motor 3 for driving the screw rod 2 to rotate is installed at one end of the bracket 1, and the output shaft of the servo motor 3 drives the screw rod 2 to rotate in forward and reverse rotation, and the rotation of the screw rod 2 can drive the bracket 28 to move forward and backward, a telescopic plate 10 is arranged inside the bracket 28, a mounting frame 6 is fixed to the bottom end of the telescopic plate 10, a cylinder 29 is installed on one side of the telescopic plate 10, and the expansion or contraction of the cylinder 29 drives the telescopic plate 10 to expand, a cylinder 4 13 is installed at one end of the top of the bracket 28, and the cylinder rod end of the cylinder 4 13 is fixedly connected to the telescopic plate 10, and the telescopic plate 10 is driven to move forward and backward by starting the cylinder 4 13.

[0025] A telescopic plate 11 is arranged on the right side of the telescopic plate 10 inside the bracket 8, and a cylinder 12 is installed on the side of the telescopic plate 11 away from the telescopic plate 10, and the telescopic plate 11 is unfolded by the cylinder 12, and a cylinder 4 is installed at one end located at the bottom of the bracket 8, and the cylinder rod end of the cylinder 4 is fixedly connected to the telescopic plate 11, and the telescopic plate 11 is moved by the cylinder 4, and a clamping claw 5 is installed at the bottom end of the telescopic plate 11; the clamping claw 5 can clamp some materials, and guide plates 7 are fixed to the front and rear inner walls of the bracket 8, and grooves 15 are provided on the front and rear exteriors of the telescopic plates 10 and 11, and the bracket 8 is embedded in the front and rear ends of the telescopic plates 10 and 11 through the grooves 15.

[0026] A servo motor 20 is installed at one end of the mounting frame 6, and a gear 16 is fixed outside the output shaft of the servo motor 20. A gear 29 is fixed at the middle position of the top of the connecting frame 18, and the gear 29 and the servo motor 20 are meshed. The output shaft of the servo motor 20 drives the gear 16 to rotate when it rotates forward and reversely, and the connecting frame 18 is driven to rotate by the meshing of the gear 16 and the gear 29. The front and rear ends of the telescopic plate 10 and the telescopic plate 2 are fixed with an oil tank 14, and the bottom end of the oil tank 14 is fixed with a pipe 27, and the bottom end of the pipe 27 extends to the top of the groove 15. The pipe 27 is away from the end of the oil tank 14 and the ball 26 rotates inside, and the ball 26 and the top of the guide plate 7 are tightly fitted; during the movement of the telescopic plate 21 and the telescopic plate 10, the ball 26 will be urged to roll, and the lubricating oil of the rolling part of the ball 26 will flow out, and the resistance of the telescopic plate 21 and the telescopic plate 10 when moving will be reduced by the lubricating oil.

[0027] Working principle: When in use, firstly, lubricating oil is injected into the oil tank 14, and the cylinder 14 and the cylinder 4 13 start the telescopic plate 2 11 and the telescopic plate 10 to move left and right, and the cylinder 2 9 and the cylinder 3 12 start the telescopic plate 10 and the telescopic plate 2 11 to expand or contract. However, during the movement of the telescopic plate 10 and the telescopic plate 2 11, the lubricating oil in the oil tank 14 flows along the pipe 27 and rolls out through the ball 26, thus reducing the friction resistance of the telescopic plate 10 and the telescopic plate 2 11 when moving;

[0028] Secondly, the electric push rod 25 is started, and the electric push rod 25 unfolds the scissor frame 21 to deform. At this time, the slide plate 24 slides along the slide groove 22, so that the distance between the four suction cups 17 can be adjusted, the grasping range of the object is increased, and the firmness of the grasping of the object is improved;

[0029] Finally, the servo motor 2 20 is started, the gear 1 16 rotates, and the gear 1 16 drives the connecting frame 18 to rotate by meshing with the gear 2 19, and the suction cup 17 is used to absorb and grasp the object.

[0030] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A grabbing robot arm for an injection molding machine, comprising a bracket and a mounting frame, characterized in that: The bracket one is arranged on one side above the mounting frame, a connecting frame is arranged below the mounting frame, a scissors frame is rotatably arranged below the connecting frame, and a suction cup is installed at the bottom end of the scissors frame, a bracket three is passed through the top of one end of the scissors frame, and an electric push rod is installed at one end of the top of the bracket three, the cylinder end and the cylinder rod end of the electric push rod are both rotatably connected to the top end of the scissors frame, a slide groove is arranged at one end of the connecting frame, a slide plate is fixed at one end of the bracket three, and the slide plate is inserted into the slide groove.

2. The grabbing robot arm for an injection molding machine according to claim 1, characterized in that: Bracket 2 is slidably arranged on bracket 1, a screw is rotatably arranged inside bracket 1, and the screw and bracket 2 are threadedly penetrated, a servo motor 1 for driving the screw to rotate is installed at one end of bracket 1, a telescopic plate 1 is arranged inside bracket 2, the mounting frame is fixed to the bottom end of telescopic plate 1, a cylinder 2 is installed on one side of telescopic plate 1, a cylinder 4 is installed at one end of the top of bracket 2, and the cylinder rod end of cylinder 4 is fixedly connected to telescopic plate 1.

3. The grabbing robot arm for an injection molding machine according to claim 2, characterized in that: A telescopic plate 2 is arranged inside the bracket 2 on the right side of the telescopic plate 1, and a cylinder 3 is installed on the side of the telescopic plate 2 away from the telescopic plate 1, and a cylinder 1 is installed at one end located at the bottom of the bracket 2, and the cylinder rod end of the cylinder 1 is fixedly connected to the telescopic plate 2, and a clamping claw is installed at the bottom end of the telescopic plate 2.

4. The grabbing robot arm for an injection molding machine according to claim 3, characterized in that: Guide plates are fixed to the front and rear inner walls of the second bracket, grooves are provided at the front and rear exteriors of the first and second telescopic plates, and the second bracket is embedded in the front and rear ends of the first and second telescopic plates through the grooves.

5. The grabbing robot arm for an injection molding machine according to claim 1, characterized in that: A servo motor 2 is installed at one end inside the mounting frame, and a gear 1 is fixed outside the output shaft of the servo motor 2. A gear 2 is fixed at the middle position of the top end of the connecting frame, and the gear 2 and the servo motor 2 are meshingly connected.

6. The grabbing robot arm for an injection molding machine according to claim 4, characterized in that: The front and rear ends of the telescopic plate 1 and the telescopic plate 2 are both fixed with oil tanks, and the bottom ends of the oil tanks are fixed with pipelines. The bottom end of the pipe extends to the top of the groove, and a ball is rotated inside the end of the pipe away from the oil tank. And the top of the ball and the guide plate fit tightly.

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