A blow plus suction type screw locking robot

Abstract

This utility model discloses a blow-and-suction type screw-fastening robot. The robot body has a feeding unit and a vertically movable picking unit at its front end. The feeding unit includes a feeding pipe and a horizontally movable receiving platform. The upper end of the feeding pipe is connected to an air blowing pipe, and the feeding pipe is located above the receiving platform. The picking unit includes a vertically movable mounting base plate, on which a vertical electric screwdriver is fixed. The lower end of the electric screwdriver is connected to a screwdriver bit. Below the screwdriver bit is a vertically movable suction assembly, and the screwdriver bit is designed to penetrate downwards into the suction assembly. The suction assembly is located above the receiving platform, which is designed to move back and forth below the feeding pipe and the suction assembly. This blow-and-suction type screw-fastening robot can automatically blow screws to the receiving platform, then pick them up from the receiving platform using a vacuum suction method, and then automatically fasten the screws with the electric screwdriver. Screw feeding and fastening can be performed simultaneously, resulting in high work efficiency.

Description

Technical Field

[0001] This utility model relates to a screw-locking robot, specifically a blow-and-suction type screw-locking robot. Background Technology

[0002] Currently, automatic screw fastening technology, as an important component of industrial automation, is widely used in various fields such as home appliances, automobiles, electronics, communication equipment, and toys. Traditional automatic screw fastening technology is mainly based on air suction, which uses vacuum suction to pick up screws from a feeder and then fastens them. However, this requires back-and-forth picking up of screws, increasing the picking time and resulting in a slow fastening cycle, thus affecting production efficiency. Therefore, a blow-and-suction type screw fastening robot was designed to solve the above problems.

[0003] It should be noted that the above introduction to the technical background is only for the purpose of providing a clear and complete explanation of the technical solutions of this utility model and facilitating understanding by those skilled in the art. It should not be assumed that these technical solutions are known to those skilled in the art simply because they have been described in the background section of this utility model. Utility Model Content

[0004] To overcome the shortcomings of the prior art, the purpose of this utility model is to provide a blow-and-suction screw-locking robot.

[0005] To achieve the above and other related objectives, the technical solution provided by this utility model is: a blow-and-suction type screw-locking robot, including a robot body, wherein a feeding unit and a material-picking unit that can move up and down are provided at the front end of the robot body; The feeding unit includes a feeding pipe and a receiving platform that can move left and right. The upper end of the feeding pipe is connected to an air blowing pipe, and the feeding pipe is located above the receiving platform. The material handling unit includes a mounting base plate that can move up and down, a vertical electric screwdriver fixed on the mounting base plate, and a screwdriver bit connected to the lower end of the electric screwdriver; a material suction group that can move up and down is arranged below the screwdriver bit, and the screwdriver bit is configured to be able to penetrate downward into the material suction group; The suction unit is located above the receiving platform, which is configured to move back and forth between the feeding pipe and the suction unit.

[0006] Furthermore, the suction assembly includes a suction sleeve, a bushing is provided in the upper part of the inner cavity of the suction sleeve, a rotatable suction tube is provided in the lower part of the inner cavity of the suction sleeve, the lower end of the suction tube extends out of the lower end of the suction sleeve, and the inner cavity of the suction sleeve is connected to a vacuum connector, which is installed on the side wall of the suction sleeve. The suction tube has a first step inside, and a first spring is provided between the bushing and the first step; The lower part of the suction sleeve is fitted with a sleeve, and the inside of the sleeve is provided with a second step. A second spring is provided between the second step and the suction sleeve, and the upper end of the second spring abuts against the outer wall step of the suction sleeve. A groove is formed on the outer side of the lower end of the suction sleeve, and a protruding retaining ring is provided in the groove.

[0007] Furthermore, a ring of rolling steel balls is embedded in the lower part of the inner cavity of the suction sleeve, and the steel balls are positioned against the outer wall of the suction tube. In this design, the steel balls allow the suction tube to rotate more flexibly.

[0008] Furthermore, the feeding tube is fixed to the front bottom of the robot body via a first connecting plate; an expansion sleeve structure is provided at the upper end of the feeding tube. In this design, the expansion sleeve structure prevents the air blowing tube from loosening when it is fitted, maintaining structural stability.

[0009] Furthermore, the receiving platform is connected to a horizontally arranged first cylinder via a second connecting plate, and moves left and right via the first cylinder; the first cylinder is fixed to the bottom front end of the robot body.

[0010] Furthermore, the receiving platform is provided with a clamping hole adapted to the screw, and detection holes communicating with the clamping holes are provided on both sides of the receiving platform. Sensors are installed at each detection hole on both sides of the receiving platform. In this design, the detection holes facilitate the detection of whether the screw has entered the clamping hole.

[0011] Furthermore, the electric screwdriver is fixedly connected to the mounting base plate via a third connecting plate; the material suction assembly is connected to a vertically arranged second cylinder via a fourth connecting plate, and the second cylinder is fixed to the lower end of the third connecting plate. In this design, the mounting base plate is equipped with a vertical guide rail, and the fourth connecting plate is connected to the guide rail via a slider.

[0012] Furthermore, the vacuum connector is connected to a vacuum generator via a vacuum tube. The vacuum generator is located at the front end of the robot body and is also equipped with a silencer.

[0013] Furthermore, a light source is also provided on the front end of the robot body, located on one side of the material handling unit. In this design, the light source serves as illumination, facilitating observation of the electric screwdriver's screw-tightening operation.

[0014] Furthermore, the vacuum generator, light source, and material handling unit are all fixed to a movable plate at the front end of the robot body. In this design, the movable plate moves up and down via a lead screw connected to the robot body.

[0015] Due to the application of the above technical solution, the beneficial effects of this utility model compared with the prior art are as follows: This invention uses an air-blowing pipe to blow screws into a feeding pipe, and a movable receiving platform receives and transfers the screws, enabling the feeding and screw-locking processes to be performed in parallel. After the screws are vacuum-picked, the electric screwdriver directly performs the locking operation, reducing the time wasted in traditional suction technology by repeatedly picking up and removing materials, and significantly improving production efficiency. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the screw-locking robot of this utility model; Figure 2 This is a schematic diagram of a screw-locking robot according to the present invention. Figure 3 This is a schematic diagram of the overall structure of the feeding unit of this utility model; Figure 4 This is a schematic diagram of the receiving platform and related structures of this utility model; Figure 5 This is a schematic diagram of the overall structure of the material handling unit of this utility model; Figure 6 This is a schematic diagram of the overall structure of the feeding assembly and bit of this utility model; Figure 7 This is a cross-sectional schematic diagram of the suction assembly and bit structure of this utility model; In the above attached figures, 1. Robot body; 2. Feeding unit; 21. Feeding pipe; 22. Receiving platform; 23. First connecting plate; 24. Expansion sleeve structure; 25. Second connecting plate; 26. First cylinder; 27. Material clamping hole; 28. Sensor; 3. Material handling unit; 31. Mounting base plate; 32. Electric screwdriver; 33. Screwdriver bit; 34. Material suction assembly; 3401. Suction sleeve; 3402. Bushing; 3403. Suction pipe; 3404. Vacuum connector; 3405. First step; 3406. First spring; 3407. Sleeve; 3408. Second step; 3409. Second spring; 3410. Slot; 3411. Retaining ring; 3412. Steel ball; 35. Third connecting plate; 36. Fourth connecting plate; 37. Second cylinder; 4. Vacuum generator; 5. Silencer; 6. Light source; 7. Moving plate. Detailed Implementation

[0017] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification.

[0018] It should be noted that in the description of this utility model, the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use. These terms are used only for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or component 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. Furthermore, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance. The terms "horizontal," "vertical," and "suspended," etc., do not indicate that the component must be absolutely horizontal or suspended, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0019] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0020] In the description of this application, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is usually based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this application and simplifying the description. Unless otherwise stated, these directional terms 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, and therefore should not be construed as a limitation on the scope of protection of this application; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0021] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby providing a clearer and more definite definition of the scope of protection of the present invention.

[0022] Example: This embodiment provides a blow-and-suction type screw-locking robot; see attached document. Figure 1 and attached Figure 2 As shown, the robot includes a robot body 1, which serves as a robot base. It can rotate via two-stage horizontal swing arms to adjust its position in the horizontal plane; this is existing technology and will not be elaborated upon here. A feeding unit 2 and a vertically movable material handling unit 3 are located at the front end of the robot body 1.

[0023] See appendix Figure 3 and attached Figure 4 As shown, the feeding unit 2 includes a feeding pipe 21 and a receiving platform 22 that can move left and right. The upper end of the feeding pipe 21 is connected to an air blowing pipe. A screw is blown into the feeding pipe 21 from the air blowing pipe. The feeding pipe 21 is located above the receiving platform 22. The feeding pipe 21 is fixed to the front bottom of the robot body 1 by a first connecting plate 23. An expansion sleeve structure 24 is provided at the upper end of the feeding pipe 21. The expansion sleeve structure 24 makes it difficult for the air blowing pipe to loosen when it is fitted, maintaining structural stability. The expansion sleeve structure 24 is used to connect the feeding pipe 21 and the air blowing pipe, enhancing the connection stability and preventing loosening caused by vibration or airflow impact.

[0024] The receiving platform 22 is connected to a horizontally positioned first cylinder 26 via a second connecting plate 25, and moves left and right via the first cylinder 26; the first cylinder 26 is fixed to the bottom front end of the robot body 1. The receiving platform 22 has a locking hole 27 adapted to the screw, wherein the upper part of the locking hole 27 is a conical hole and the lower part is a straight hole. Detection holes communicating with the locking holes 27 are provided on both sides of the receiving platform 22, and sensors 28 (e.g., through-beam optical fibers) are installed at each detection hole on both sides of the receiving platform 22. The detection holes facilitate the detection of whether the screw has entered the locking hole 27. The receiving platform 22 adopts a locking hole 27 design combining conical and straight holes, and is equipped with sensors 28, which can effectively detect whether the screw is in place, reducing the risk of missed locking, incorrect locking, and jamming.

[0025] See appendix Figure 5 As shown, the material handling unit 3 includes a vertically movable mounting base plate 31. A vertical electric screwdriver 32 is fixed on the mounting base plate 31, and a screwdriver bit 33 is connected to the lower end of the electric screwdriver 32. A vertically movable suction assembly 34 is arranged below the screwdriver bit 33, and the screwdriver bit 33 is configured to penetrate downwards into the suction assembly 34. The suction assembly 34 is located above the receiving platform 22, which is configured to move back and forth between the feeding pipe 21 and the suction assembly 34. The electric screwdriver 32 is fixedly connected to the mounting base plate 31 via a third connecting plate 35. The suction assembly 34 is connected to a vertically arranged second cylinder 37 via a fourth connecting plate 36, and the second cylinder 37 is fixed to the lower end of the third connecting plate 35. A vertical guide rail is provided on the mounting base plate 31, and the fourth connecting plate 36 is connected to the guide rail via a slider.

[0026] See appendix Figure 6 and attached Figure 7 As shown, the suction assembly 34 includes a suction sleeve 3401. A bushing 3402 is provided at the upper part of the inner cavity of the suction sleeve 3401, and a rotatable suction tube 3403 is provided at the lower part of the inner cavity of the suction sleeve 3401. The lower end of the suction tube 3403 extends out of the lower end of the suction sleeve 3401. The shape of the lower port of the suction tube 3403 is adapted to the shape of the screw and is limited, allowing the screw to be sucked into the lower port without causing it to move upwards. The inner cavity of the suction sleeve 3401 is connected to a vacuum connector 3404. The connector 3404 is installed on the side wall of the suction sleeve 3401; the suction tube 3403 has a first step 3405 inside, and a first spring 3406 is provided between the bushing 3402 and the first step 3405; a sleeve 3407 is fitted on the lower part of the suction sleeve 3401, and a second step 3408 is provided inside the sleeve 3407. A second spring 3409 is provided between the second step 3408 and the suction sleeve 3401, and the upper end of the second spring 3409 abuts against the outer wall step of the suction sleeve 3401. The lower part of the second spring 3409 is embedded in the sleeve 3407, and the upper part of the suction sleeve 3401 protrudes from the wall of the second spring 3409, so that the upper end of the second spring 3409 can abut against the wall; a groove 3410 is formed on the outer side of the lower end of the suction sleeve 3401, and a protruding retaining ring 3411 is provided in the groove 3410. A ring of rolling steel balls 3412 is embedded in the lower part of the inner cavity of the suction sleeve 3401, and the steel balls 3412 are set against the outer wall of the suction tube 3403. The steel balls 3412 make the suction tube 3403 more flexible when rotating.

[0027] The suction unit 34 is internally designed with a bushing 3402, a first spring 3406, a second spring 3409, and a rotatable suction tube 3403, and is embedded with steel balls 3412 to make rotation more flexible. This structure not only ensures the stability of screw adsorption, but also allows the suction tube 3403 to float and rotate within a certain range, improving the centering accuracy and fault tolerance when tightening screws, and reducing the phenomenon of screw stripping, head stripping, or workpiece damage.

[0028] See appendix Figure 2 As shown, vacuum connector 3404 is connected to vacuum generator 4 via vacuum tube. Vacuum generator 4 is located on the front end of robot body 1 and also includes a silencer 5. A light source 6 is also located on the front end of robot body 1, situated to one side of material handling unit 3. The light source 6 provides illumination, facilitating observation of the screw-tightening operation of electric screwdriver 32. Vacuum generator 4, light source 6, and material handling unit 3 are all fixed to a movable plate 7 on the front end of robot body 1. The movable plate 7 moves up and down via a lead screw connected to the robot body 1.

[0029] Working principle: The upper end of the feeding pipe 21 is connected to the air blowing pipe. The screw is sucked in from the other end of the air blowing pipe and blown into the feeding pipe 21 and falls down. At this time, the receiving platform 22 moves to the lower part of the feeding pipe 21 by the first cylinder 26. The receiving platform 22 can just catch the screw, and the screw falls into the clamping hole 27. The shape of the clamping hole 27 is adapted to the screw and can just hold the screw. Then the receiving platform 22 moves to the lower part of the suction group 34 by the first cylinder 26, corresponding to the lower end of the suction pipe 3403. The suction group 34 moves down to the screw position by the second cylinder 37. The screw is sucked into the lower end of the suction pipe 3403 by vacuuming and is held in place by vacuum. At this time, the receiving platform 22 moves back below the feeding pipe 21 via the first cylinder 26 to continue receiving screws. After the receiving platform 22 moves away, the threaded hole position of the screw to be locked is exposed on the worktable below. The suction group 34 moves upward via the second cylinder 37, and then the screwdriver bit 33 enters the suction group 34 until it touches the screw. Then the entire material picking unit 3 moves down to the screw hole, and the automatic screw locking operation is completed by rotating the electric screwdriver 32. At the same time as locking the screw, the receiving platform 22 can receive the material. The robot body 1 adjusts the screw locking position by rotating.

[0030] This invention relates to a blow-and-suction screw-locking robot that can automatically blow screws to a receiving table, then suck them up from the receiving table using a vacuum suction method, and finally use an electric screwdriver to automatically lock the screws. The screw feeding and locking can be performed simultaneously, resulting in high work efficiency.

[0031] The above embodiments are only for illustrating the technical concept and features of this utility model. Their purpose is to enable those skilled in the art to understand the content of this utility model and implement it. They cannot be used to limit the protection scope of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be covered within the protection scope of this utility model.

Claims

1. A blow and suck type screw locking robot comprising a robot body (1), characterized in that: The front end of the robot body (1) is provided with a feeding unit (2) and a material picking unit (3) that can move up and down. The feeding unit (2) includes a feeding pipe (21) and a receiving platform (22) that can move left and right. The upper end of the feeding pipe (21) is connected to the air blowing pipe, and the feeding pipe (21) is located above the receiving platform (22). The material handling unit (3) includes a mounting base plate (31) that can move up and down. A vertical electric screwdriver (32) is fixed on the mounting base plate (31). A screwdriver bit (33) is connected to the lower end of the electric screwdriver (32). A suction assembly (34) that can move up and down is provided below the screwdriver bit (33). The screwdriver bit (33) is configured to be able to penetrate downward into the suction assembly (34). The suction unit (34) is located above the receiving platform (22), which is configured to move back and forth between the feeding pipe (21) and the suction unit (34).

2. The blow-and-suction screw-locking robot according to claim 1, characterized in that: The suction assembly (34) includes a suction sleeve (3401), a bushing (3402) is provided on the upper part of the inner cavity of the suction sleeve (3401), and a rotatable suction tube (3403) is provided on the lower part of the inner cavity of the suction sleeve (3401). The lower end of the suction tube (3403) extends out of the lower end of the suction sleeve (3401). The inner cavity of the suction sleeve (3401) is connected to a vacuum connector (3404), and the vacuum connector (3404) is installed on the side wall of the suction sleeve (3401). The suction tube (3403) has a first step (3405) inside, and a first spring (3406) is provided between the bushing (3402) and the first step (3405). The lower part of the suction sleeve (3401) is fitted with a sleeve (3407), and the inside of the sleeve (3407) is provided with a second step (3408). A second spring (3409) is provided between the second step (3408) and the suction sleeve (3401), and the upper end of the second spring (3409) abuts against the outer wall step of the suction sleeve (3401). A groove (3410) is provided on the outer side of the lower end of the suction sleeve (3401), and a protruding retaining ring (3411) is provided in the groove (3410).

3. The blow and suck type screw locking robot according to claim 2, characterized in that: A ring of rolling steel balls (3412) is embedded in the lower part of the inner cavity of the suction sleeve (3401), and the steel balls (3412) are set against the outer wall of the suction tube (3403).

4. The blow and suck type screw locking robot according to claim 2, characterized in that: The feeding tube (21) is fixed to the bottom front end of the robot body (1) by the first connecting plate (23); the upper end of the feeding tube (21) is provided with an expansion sleeve structure (24).

5. The blow and suck type screw locking robot according to claim 2, characterized in that: The receiving platform (22) is connected to the horizontally arranged first cylinder (26) through the second connecting plate (25), and moves left and right through the first cylinder (26); the first cylinder (26) is fixed at the bottom of the front end of the robot body (1).

6. The blow and suck type screw locking robot according to claim 2, wherein: The receiving platform (22) is provided with a clamping hole (27) that is compatible with the screw. The receiving platform (22) is provided with detection holes on both sides that are connected to the clamping hole (27). Sensors (28) are provided at the detection holes on both sides of the receiving platform (22).

7. The blow and suck type screw locking robot according to claim 2, wherein: The electric screwdriver (32) is fixedly connected to the mounting base plate (31) via the third connecting plate (35); the suction group (34) is connected to the vertically arranged second cylinder (37) via the fourth connecting plate (36), and the second cylinder (37) is fixed at the lower end of the third connecting plate (35).

8. The blow-and-suction screw-locking robot according to claim 2, characterized in that: The vacuum connector (3404) is connected to the vacuum generator (4) via a vacuum tube. The vacuum generator (4) is located on the front end of the robot body (1). The vacuum generator (4) is also equipped with a silencer (5).

9. The blow and suck type screw locking robot according to claim 8, characterized in that: A light source (6) is also provided on the front end of the robot body (1), and the light source (6) is located on one side of the material handling unit (3).

10. The blow and suck type screw locking robot according to claim 9, wherein: The vacuum generator (4), the light source (6), and the material handling unit (3) are all fixed on the movable plate (7) at the front end of the robot body (1).

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