A four-axis screw locking robot

Abstract

The utility model belongs to screw locking equipment technical field especially relates to a four -axis lock screw robot, include: frame, lock screw subassembly, install in the frame through X -axis guide rail and Z -axis guide rail and realize X -axis and Z -axis direction's displacement, object table, be configured as symmetrical two, and all install in the frame through Y -axis guide rail, wherein, two object table place have the work piece to be locked, take material platform, set up between two mobile platform, and open have the upward slot hole, control system, including setting control panel in the frame front end, with Control panel, X -axis guide rail, Y -axis guide rail and Z -axis guide rail electricity connection's PLC controller. The four -axis lock screw robot provided by the utility model significantly reduces the operation difficulty, reduces time consumption, and comprehensively solves the technical problems of low efficiency, high cost and difficult operation of the manual screwing method in the prior art.

Description

Technical Field

[0001] This utility model belongs to the technical field of screw tightening equipment, and in particular relates to a four-axis screw tightening robot. Background Technology

[0002] With technological and industrial development, labor costs have gradually increased, and traditional manual screw-driving methods can no longer meet the needs of modern industrial production. In many enterprises, workers still need to use manual electric screwdrivers and their hands to complete a series of steps such as gripping, moving, and aligning screws. This operation not only consumes a lot of time but also increases production costs. In particular, for screws made of non-magnetic materials such as stainless steel and copper, the inability to grip them using magnets further increases the difficulty and time consumption of the operation.

[0003] Therefore, the traditional method of manually tightening screws not only affects production efficiency but also increases the burden of labor costs for enterprises. Utility Model Content

[0004] The purpose of this invention is to provide a four-axis screw-locking robot, which aims to solve the technical problems of the existing manual screw-locking method affecting production efficiency, increasing operation difficulty and time consumption.

[0005] To achieve the above objectives, this utility model provides a four-axis screw-locking robot, comprising: frame; The screw-locking assembly is mounted on the frame via X-axis and Z-axis guide rails, enabling displacement in the X and Z axes. Two symmetrical stages are configured and mounted on the frame via Y-axis guide rails, wherein workpieces to be locked are placed on the two stages; The material handling platform is located between the two moving platforms and has an upward-facing slot. The control system includes a control panel located at the front end of the frame, and a PLC controller electrically connected to the control panel, the X-axis guide rail, the Y-axis guide rail, and the Z-axis guide rail.

[0006] Optionally, the four-axis screw-locking robot further includes a cable chain assembly arranged along the moving direction of the Y-axis guide rail, and both of the worktables are connected to the cable chain assembly.

[0007] Optionally, the screw-locking assembly includes an electric screwdriver and a screwdriver blade disposed at the bottom end of the electric screwdriver.

[0008] Optionally, the screwdriver is fitted with a suction nozzle, which is connected to a vacuum generator via a vacuum pipe and used to attract non-magnetic screws.

[0009] Optionally, the suction nozzle is made of non-magnetic stainless steel and has an annular air groove on its inner wall, and the vacuum pipe forms a negative pressure adsorption through the vacuum annular air groove.

[0010] Optionally, the four-axis screw-locking robot further includes a tilting mechanism disposed at the end of the Z-axis guide rail of the electric screwdriver. The tilting mechanism includes: A rotating shaft mounting plate is fixed to the bottom of the Z-axis guide rail; A drive motor is mounted on one side of the rotating shaft mounting plate; The locking base plate is connected to the output shaft of the drive motor and is used to drive the electric screwdriver to tilt 0°~60° in the XZ plane.

[0011] Optionally, a buffer assembly for absorbing the axial impact force when tightening screws is provided between the electric screwdriver and the X-axis guide rail. The buffer assembly includes: a guide rod, a guide rod mounting block connected to the guide rod, and a spring sleeved on the guide rod.

[0012] Optionally, a limit block is connected to the end of the guide rod, and the limit block controls the buffer stroke by adjusting the screw.

[0013] Optionally, the X-axis guide rail, Y-axis guide rail, and Z-axis guide rail are all linear modules.

[0014] Optionally, a pressure sensor is installed in the slot of the material handling platform. The pressure sensor is communicatively connected to the PLC controller and is used to detect the placement position of the screw.

[0015] The four-axis screw-locking robot provided in this embodiment of the present invention has at least one of the following technical effects: This utility model provides a four-axis screw-fastening robot that achieves multi-directional displacement of the screw-fastening assembly and the platform through X-axis, Y-axis, and Z-axis guide rails. Combined with the design of the material handling platform, it can automatically complete a series of operations such as screw gripping, moving, aligning, and tightening. Compared with traditional manual screw-fastening methods, it greatly improves production efficiency. Utilizing a PLC controller and control system, it precisely controls the operation of each component, reducing manual intervention and effectively lowering labor costs. Furthermore, this robot is not limited by screw material; it can successfully tighten screws made of non-magnetic materials such as stainless steel and copper, significantly reducing operational difficulty and time consumption. It comprehensively solves the technical problems of low efficiency, high cost, and difficult operation inherent in existing manual screw-fastening methods. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a structural schematic diagram of the four-axis screw-locking robot of this utility model.

[0018] Figure 2 for Figure 1 Enlarged view of the local structure at point A in the middle.

[0019] Figure 3 This is the front view of this practical four-axis screw-locking robot.

[0020] The following are the labeling elements in the figure: 10. Frame; 20. Screw fastening assembly; 21. Electric screwdriver; 22. Slice; 23. Suction nozzle; 30. Stage; 40. Material handling platform; 50. Control system; 60. Cable chain assembly; 70. Tilting mechanism; 71. Rotary shaft mounting plate. Detailed Implementation

[0021] The embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the embodiments of the present invention, and should not be construed as limiting the present invention.

[0022] In the description of the embodiments of this utility model, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the embodiments of this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0023] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of embodiments of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0024] In this embodiment of the invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment of the invention according to the specific circumstances.

[0025] In one embodiment of this utility model, such as Figures 1-3 As shown, a four-axis screw-locking robot is provided, comprising: Rack 10; The screw fastening assembly 20 is mounted on the frame 10 via the X-axis guide rail and the Z-axis guide rail, and realizes displacement in the X-axis and Z-axis directions; Two symmetrical platforms 30 are configured and mounted on the frame 10 via Y-axis guide rails, wherein workpieces to be locked are placed on the two platforms 30. The material handling platform 40 is disposed between the two moving platforms and has an upward-facing slot. The control system 50 includes a control panel disposed at the front end of the frame 10, and a PLC controller electrically connected to the control panel, the X-axis guide rail, the Y-axis guide rail, and the Z-axis guide rail.

[0026] Specifically, the four-axis screw-locking robot provided by this utility model achieves multi-directional displacement of the screw-locking assembly 20 and the platform 30 through X-axis, Y-axis, and Z-axis guide rails. Combined with the design of the material handling platform 40, it can automatically complete a series of operations such as screw gripping, moving, aligning, and tightening, greatly improving production efficiency compared to traditional manual screw-locking methods. The PLC controller and control system 50 precisely control the operation of each component, reducing manual intervention and effectively lowering labor costs. Furthermore, this robot is not limited by screw material; it can successfully tighten screws made of non-magnetic materials such as stainless steel and copper, significantly reducing operational difficulty and time consumption. It comprehensively solves the technical problems of low efficiency, high cost, and difficult operation inherent in existing manual screw-locking methods.

[0027] In another embodiment of this utility model, such as Figures 1-3 As shown, the four-axis screw-locking robot also includes a cable chain assembly 60 arranged along the Y-axis guide rail. Both of the worktables 30 are connected to the cable chain assembly 60. Specifically, the cable chain assembly 60 can effectively store and protect the cables, air hoses, etc. connected to the worktables 30 during movement, preventing them from becoming tangled, pulled, or even damaged during movement. This ensures the stability and reliability of the robot's component connections, reduces downtime for maintenance due to line faults, and further improves the continuity of equipment operation and production efficiency.

[0028] In another embodiment of this utility model, such as Figures 1-3 As shown, the screw-locking assembly 20 includes an electric screwdriver 21 and a screwdriver bit 22 disposed at the bottom end of the electric screwdriver 21. Specifically, the combination of the electric screwdriver 21 and the screwdriver bit 22 constitutes a highly efficient screw-locking actuator. The electric screwdriver 21 can provide a stable and adjustable torque output, while the screwdriver bit 22 can precisely engage with the screw head. The coordinated work of the two ensures that the screw is tightened with appropriate force and precision, guarantees the consistency of workpiece assembly quality, reduces the defect rate caused by improper screw tightening, and improves the overall production quality.

[0029] In another embodiment of this utility model, such as Figures 1-3 As shown, the screwdriver 22 is fitted with a suction nozzle 23, which is connected to a vacuum generator via a vacuum pipe and used to pick up non-magnetic screws. Specifically, the suction nozzle 23, in conjunction with the vacuum system design, effectively solves the problem of grasping non-magnetic screws, enabling the robot to adapt to the operational needs of more types of screws, further expanding the application range of the equipment. Regardless of whether the screw material is magnetic or not, it can achieve stable grasping and precise installation, avoiding the need to change equipment or use special operations due to screw material limitations, and reducing production complexity and cost.

[0030] In another embodiment of this utility model, such as Figures 1-3 As shown, the suction nozzle 23 is made of non-magnetic stainless steel, and its inner wall is provided with an annular air groove. The vacuum pipe forms a negative pressure for adsorption through the vacuum annular air groove. Specifically, the non-magnetic stainless steel material ensures that the suction nozzle 23 will not interfere with non-magnetic screws, ensuring the stability of adsorption; the cooperation between the annular air groove and the vacuum pipe enables the negative pressure to be evenly distributed on the inner wall of the suction nozzle 23, enhancing the adsorption force on the screws, preventing screws from falling off during handling and installation, improving the reliability of screw gripping and installation, reducing production interruptions and material waste caused by screws falling off, and improving the stability and economy of the production process. In another embodiment of this utility model, such as Figures 1-3As shown, the four-axis screw-locking robot also includes a tilting mechanism 70 disposed at the end of the Z-axis guide rail of the electric screwdriver 21. The tilting mechanism 70 includes: A rotating shaft mounting plate 71 is fixed to the bottom of the Z-axis guide rail; A drive motor is mounted on one side of the rotating shaft mounting plate 71; The locking base plate is connected to the output shaft of the drive motor and is used to tilt the electric screwdriver 21 from 0° to 60° in the XZ plane. Specifically, the tilting mechanism 70 gives the electric screwdriver 21 the ability to adjust its spatial angle, allowing for flexible adjustment to meet screw installation requirements at different angles and positions. This enables the screw tightening of complex angles without manual intervention, improving the robot's adaptability to diverse workpieces, reducing situations where automated production is impossible due to special screw installation angles, and further enhancing the equipment's versatility and production efficiency.

[0031] In another embodiment of this utility model, such as Figures 1-3 As shown, a buffer assembly for absorbing the axial impact force during screw tightening is provided between the electric screwdriver 21 and the X-axis guide rail. The buffer assembly includes: a guide rod, a guide rod mounting block connected to the guide rod, and a spring sleeved on the guide rod. Specifically, the buffer assembly can effectively absorb the axial impact force generated by the electric screwdriver 21 during screw tightening, preventing the impact force from being transmitted to the X-axis guide rail and the frame 10, reducing wear and damage to the equipment caused by impact vibration, and extending the service life of the equipment; at the same time, the buffering effect can also make the screw tightening process more stable, preventing problems such as screw stripping and workpiece surface damage caused by excessive impact force, and improving the assembly quality and production stability of the product.

[0032] In another embodiment of this utility model, such as Figures 1-3 As shown, a limit block is connected to the end of the guide rod, and the limit block controls the buffer stroke through an adjusting screw. Specifically, by adjusting the position of the limit block through the adjusting screw, the buffer stroke of the buffer assembly can be flexibly set according to actual production needs, achieving adaptive buffering for screws of different specifications and workpieces of different materials, thereby improving the versatility and ease of adjustment of the buffer assembly.

[0033] In another embodiment of this utility model, such as Figures 1-3 As shown, the X-axis, Y-axis, and Z-axis guide rails are all linear modules. Specifically, the linear modules feature high precision, high rigidity, and low friction, providing precise and stable guidance and drive for the movement of the screw-locking assembly 20 and the stage 30. This ensures the accuracy of screw gripping, movement, and installation, reduces screw installation deviations caused by insufficient guide rail precision, and improves product assembly accuracy.

[0034] In another embodiment of this utility model, such as Figures 1-3 As shown, a pressure sensor is installed in the slot of the picking platform 40. The pressure sensor is communicatively connected to the PLC controller and is used to detect the screw placement position. Specifically, the pressure sensor can detect in real time whether the screw is placed in the designated position of the picking platform 40, providing accurate position feedback information to the PLC controller. This ensures that the robot can pick up the screw in a timely and accurate manner, avoiding picking failure or equipment failure caused by screw position deviation, and improving the success rate of screw picking and the degree of automation of the production process.

[0035] The rest of this embodiment is the same as that in Embodiment 1. Features not explained in this embodiment are explained using the methods in Embodiment 1, and will not be repeated here.

[0036] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A four-axis screw-locking robot, characterized in that, include: frame; The screw-locking assembly is mounted on the frame via X-axis and Z-axis guide rails, enabling displacement in the X and Z axes. Two symmetrical stages are configured and mounted on the frame via Y-axis guide rails, wherein workpieces to be locked are placed on the two stages; A material handling platform is disposed between the two loading platforms and has an upward-facing slot. The control system includes a control panel disposed at the front end of the frame, and a PLC controller electrically connected to the control panel, the X-axis guide rail, the Y-axis guide rail, and the Z-axis guide rail; The nozzle is made of non-magnetic stainless steel and has an annular air groove on its inner wall. The vacuum pipe forms a negative pressure adsorption through the annular air groove. The four-axis screw-locking robot also includes a tilting mechanism located at the end of the Z-axis guide rail of the electric screwdriver. The tilting mechanism includes a rotating shaft mounting plate, a drive motor, and a locking base plate. The rotating shaft mounting plate is fixed to the bottom of the Z-axis guide rail. The drive motor is mounted on one side of the rotating shaft mounting plate. The locking base plate is connected to the output shaft of the drive motor and is used to drive the electric screwdriver to tilt 0°~60° in the XZ plane.

2. The four-axis screw-locking robot according to claim 1, characterized in that: The four-axis screw-locking robot also includes a drag chain assembly arranged along the Y-axis guide rail movement direction, and both of the work platforms are connected to the drag chain assembly.

3. The four-axis screw-locking robot according to claim 1, characterized in that: The screw-locking assembly includes an electric screwdriver and a screwdriver blade disposed at the bottom end of the electric screwdriver.

4. The four-axis screw-locking robot according to claim 3, characterized in that: The screwdriver is fitted with a suction nozzle, which is connected to a vacuum generator via a vacuum pipe and is used to attract non-magnetic screws.

5. The four-axis screw-locking robot according to claim 4, characterized in that: The suction nozzle is made of non-magnetic stainless steel and has an annular air groove on its inner wall. The vacuum pipe forms a negative pressure adsorption through the vacuum annular air groove.

6. The four-axis screw-locking robot according to any one of claims 1 to 5, characterized in that: The four-axis screw-locking robot also includes a tilting mechanism located at the end of the Z-axis guide rail of the electric screwdriver. The tilting mechanism includes: A rotating shaft mounting plate is fixed to the bottom of the Z-axis guide rail; A drive motor is mounted on one side of the rotating shaft mounting plate; The locking base plate is connected to the output shaft of the drive motor and is used to drive the electric screwdriver to tilt 0°~60° in the XZ plane.

7. The four-axis screw-locking robot according to any one of claims 1 to 5, characterized in that: A buffer assembly for absorbing axial impact force when tightening screws is provided between the electric screwdriver and the X-axis guide rail. The buffer assembly includes: a guide rod, a guide rod mounting block connected to the guide rod, and a spring sleeved on the guide rod.

8. The four-axis screw-locking robot according to claim 7, characterized in that: The end of the guide rod is connected to a limit block, and the limit block controls the buffer stroke by adjusting the screw.

9. The four-axis screw-locking robot according to any one of claims 1 to 5, characterized in that: The X-axis guide rail, Y-axis guide rail, and Z-axis guide rail are all linear modules.

10. The four-axis screw-locking robot according to any one of claims 1 to 5, characterized in that: A pressure sensor is installed in the slot of the material handling platform. The pressure sensor is communicatively connected to the PLC controller and is used to detect the placement position of the screw.

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