Automatic screwing machine

Abstract

The utility model relates to an automatic screw locking machine, it includes: frame, screw locking unit, workstation and transfer mechanism, frame has the first work position and second work position in first horizontal direction setting in proper order. Screw locking unit is located between first work position and second work position in first horizontal direction, and screw locking unit includes moving mechanism, positioning detection mechanism and screw locking mechanism, and positioning detection mechanism and screw locking mechanism are sequentially arranged on moving mechanism along second horizontal direction, moving mechanism is liftable and is movably arranged on frame along second horizontal direction, and second horizontal direction and first horizontal direction are perpendicular. Workstation is movably arranged on frame along first horizontal direction to switch between first work position and second work position. Transfer mechanism is used for grabbing product and accessory, and is configured to, when workstation is located in first work position, place product on workstation, when workstation is located in second work position, place accessory on workstation.

Description

Technical Field

[0001] This utility model relates to the field of screw fastening equipment technology, and more specifically, to an automatic screw fastening machine. Background Technology

[0002] Modern manufacturing generally adopts a model of decentralized production followed by centralized assembly. Screw-fastened connections are widely used due to their ease of disassembly, reliable and stable connections, and low operating costs. Traditional methods require manual screw fastening of products and accessories using simple tools, resulting in low production efficiency and poor product consistency.

[0003] The prior art discloses a fully automatic screw fastening mechanism, which mainly includes a frame, a worktable, a robot arm, a detection mechanism, and a screw fastening mechanism. The worktable is set on the frame, and the robot arm mechanism, the detection mechanism, and the screw fastening mechanism are arranged sequentially in the front-to-back direction. The robot arm is used to pick up products and accessories onto the worktable, the detection mechanism is used for detection and positioning, and the screw fastening mechanism is used to fasten screws onto the holes of the products and accessories. Thus, the fully automatic screw fastening mechanism can realize the automatic screw fastening of products and accessories.

[0004] However, in specific application scenarios, the robotic arm, inspection mechanism, and screw-locking mechanism need to move sequentially above the worktable to complete the actions of feeding, inspection, and screw-locking in turn. Specifically, the next mechanism can only start its action after one mechanism has completed its action and moved away, resulting in a long cycle time and thus affecting the screw-locking efficiency. Utility Model Content

[0005] The purpose of this utility model is to provide an automatic screw fastening machine, which solves the technical problem of how to reduce hardware usage costs and improve space utilization.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution.

[0007] This utility model provides an automatic screw fastening machine, comprising: a frame having a first workstation and a second workstation sequentially arranged in a first horizontal direction; a screw fastening unit located between the first workstation and the second workstation in the first horizontal direction, the screw fastening unit including a moving mechanism, a positioning detection mechanism, and a screw fastening mechanism, the positioning detection mechanism and the screw fastening mechanism being sequentially arranged on the moving mechanism along a second horizontal direction, the moving mechanism being vertically and movable along the second horizontal direction on the frame, and the second horizontal direction being perpendicular to the first horizontal direction; a worktable movable along the first horizontal direction on the frame to switch between the first workstation and the second workstation; and a transfer mechanism for gripping products and accessories, configured to place products on the worktable when the worktable is located at the first workstation, and to place accessories on the worktable when the worktable is located at the second workstation.

[0008] In some embodiments of this application, at least two workbenches are provided, and each workbench is arranged sequentially in the second horizontal direction.

[0009] In some embodiments of this application, the frame is provided with a first slide rail extending along the second horizontal direction; the moving mechanism includes a first sliding seat, a second slide rail and a second sliding seat, the first sliding seat is slidably disposed on the first slide rail, the second slide rail extends vertically and is fixedly connected to the first sliding seat, the second sliding seat is slidably disposed on the second slide rail and is fixedly connected to the positioning detection mechanism and the screw locking mechanism respectively.

[0010] In some embodiments of this application, the transfer mechanism includes a first robotic arm and a second robotic arm disposed on the frame. The first robotic arm is located on one side of the first workstation in the second horizontal direction and is used to grasp and place products. The second robotic arm is located on the side of the second workstation away from the first workstation in the first horizontal direction and is used to grasp and place accessories.

[0011] In some embodiments of this application, the automatic screw fastening machine further includes a production line mechanism, which is disposed on the frame and located on the side of the first station away from the second station in the first horizontal direction.

[0012] In some embodiments of this application, the frame is provided with an attachment slot for accommodating attachments. The attachment slot is located on the side of the second workstation away from the first workstation in the first horizontal direction, and is arranged sequentially with the second robot arm in the second horizontal direction. The attachment slot has an upward opening, and the opening is used for the second robot arm to enter and exit the attachment slot.

[0013] In some embodiments of this application, the automatic screw fastening machine further includes a mobile trolley for transporting accessories, and the mobile trolley has a discharge window on its side; the accessory slot has a side wall away from the first workstation in the first horizontal direction, and / or the accessory slot has a feed window on the side wall away from the second robot arm in the second horizontal direction; both the mobile trolley and the accessory slot are provided with horizontal conveying mechanisms, and when the discharge window of the mobile trolley is aligned with the feed window of the accessory slot, the horizontal conveying mechanism in the mobile trolley is connected to the horizontal conveying mechanism in the accessory slot.

[0014] In some embodiments of this application, the horizontal conveying mechanism includes a roller mechanism and a cover. The roller mechanism includes a plurality of horizontally spaced rollers, and adjacent rollers are connected by a drive. The cover is placed over the roller mechanism, and its top has a clearance opening for each roller portion to extend out.

[0015] In some embodiments of this application, the automatic screw fastening machine further includes a housing mounted on the frame. The screw fastening unit, the transfer mechanism, and the worktable are all located inside the housing. The housing has a discharge port on the side wall near the first workstation in the first horizontal direction and a feed port on the side wall near the first robot arm in the second horizontal direction. The feed port allows the first robot arm to extend out of the housing. The assembly line mechanism extends along the first horizontal direction and passes through the discharge port, such that part of it is located inside the housing and the rest is located outside the housing.

[0016] In some embodiments of this application, the workbench positioning assembly and the base plate are provided. The positioning assembly includes a first movable member, a second movable member, a first stop block, and a second stop block. The first movable member and the first stop block are respectively located on both sides of the base plate in the first horizontal direction, and the second movable member and the second stop block are respectively located on both sides of the base plate in the second horizontal direction. The first movable member can move along the first horizontal direction, and the second movable member can move along the second horizontal direction.

[0017] As can be seen from the above technical solution, the embodiments of this utility model have at least the following advantages and positive effects:

[0018] In this embodiment of the automatic screw fastening machine, the workflow is as follows: The worktable is located at the first station. The transfer mechanism picks up the product and places it on the worktable. Then, the worktable moves in the first horizontal direction towards the second station. During this process, the moving mechanism in the screw fastening unit drives the positioning detection mechanism to perform positioning detection on the product on the worktable. Subsequently, the worktable continues to move and switches to the second station. At this time, the transfer mechanism picks up the accessory and places it on the worktable, and the accessory and the product are aligned and have holes to be fastened. Then, the worktable moves in the reverse direction, the moving mechanism moves, and drives the positioning detection mechanism and the screw fastening mechanism connected to it to move. Specifically, the positioning detection mechanism first performs positioning detection on the holes to be fastened, and then, based on the detection and positioning results, the screw fastening mechanism fastens the screw in the holes to be fastened, thereby realizing automatic screw fastening.

[0019] Because the positioning detection mechanism and screw-fastening mechanism can be raised and lowered and moved along the second horizontal direction under the drive of the moving mechanism, while the worktable can move along the first horizontal direction, the worktable and screw-fastening unit can move simultaneously after the product and accessories are loaded onto the worktable, thus effectively shortening the cycle time. On the other hand, since the positioning detection mechanism and screw-fastening mechanism are integrated on the moving mechanism and arranged sequentially along the second horizontal direction, the movement of the moving mechanism in the second horizontal direction allows for rapid switching between the positioning detection mechanism and the screw-fastening mechanism, simplifying the switching action and further shortening the cycle time, thereby improving screw-fastening efficiency. Attached Figure Description

[0020] The various objectives, features, and advantages of this invention will become more apparent from the following detailed description of preferred embodiments in conjunction with the accompanying drawings. The drawings are merely illustrative illustrations of the invention and are not necessarily drawn to scale. In the drawings, the same reference numerals always denote the same or similar parts. Wherein:

[0021] Figure 1 This is a structural schematic diagram of an automatic screw fastening machine according to an exemplary embodiment.

[0022] Figure 2 yes Figure 1 A structural diagram from another perspective.

[0023] Figure 3 yes Figure 1 A schematic diagram of the internal structure after the outer shell has been removed.

[0024] Figure 4 yes Figure 3 An enlarged structural diagram of the screw-locking unit.

[0025] The annotations in the attached figures are explained as follows:

[0026] 1. Frame; 11. First slide rail; 12. Accessory slot; 121. Opening; 122. Feed window; 13. Lower CCD mechanism;

[0027] 2. Screw fastening unit; 21. Moving mechanism; 211. First sliding seat; 212. Second slide rail; 213. Second sliding seat; 22. Positioning detection mechanism; 23. Screw fastening mechanism;

[0028] 3. Worktable; 31. Positioning assembly; 311. First moving part; 312. Second moving part; 313. First stop block; 314. Second stop block; 32. Base plate;

[0029] 4. Transfer mechanism; 41. First robotic arm; 42. Second robotic arm;

[0030] 5. Assembly line mechanism;

[0031] 6. Mobile wheelbarrow; 61. Discharge window;

[0032] 7. Horizontal conveying mechanism; 71. Roller mechanism; 711. Roller; 72. Cover; 721. Clearance opening;

[0033] 8. Shell; 81. Discharge port; 82. Inlet port;

[0034] D1, first horizontal direction; D2, second horizontal direction. Detailed Implementation

[0035] Although the present invention can be readily embodied in various forms, only some specific embodiments are shown in the accompanying drawings and will be described in detail in this specification. It is understood that this specification should be regarded as an exemplary illustration of the principles of the present invention and is not intended to limit the present invention to what is described herein.

[0036] Therefore, a feature pointed out in this specification is used to describe one feature of one embodiment of the present invention, and does not imply that every embodiment of the present invention must have the described feature. Furthermore, it should be noted that this specification describes many features. Although certain features may be combined to illustrate possible system designs, these features may also be used in other combinations not explicitly stated. Therefore, unless otherwise stated, the described combinations are not intended to be limiting.

[0037] In the embodiments shown in the accompanying drawings, the directional indications (such as up, down, left, right, front, and back) used to explain the structure and movement of the various elements of this invention are relative rather than absolute. These descriptions are appropriate when these elements are in the positions shown in the drawings. If the descriptions of the positions of these elements change, these directional indications also change accordingly.

[0038] Please see Figures 1 to 3 An embodiment of this utility model provides an automatic screw fastening machine, which mainly includes a frame 1, a screw fastening unit 2, a worktable 3, and a transfer mechanism 4. The frame 1 has a first station and a second station arranged sequentially in a first horizontal direction D1. The screw fastening unit 2 is located between the first station and the second station in the first horizontal direction D1. The screw fastening unit 2 includes a moving mechanism 21, a positioning detection mechanism 22, and a screw fastening mechanism 23. The positioning detection mechanism 22 and the screw fastening mechanism 23 are arranged sequentially on the moving mechanism 21 along a second horizontal direction D2. The moving mechanism 21 is movable and height-adjustable on the frame 1 along the second horizontal direction D2, and the second horizontal direction D2 is perpendicular to the first horizontal direction D1. The worktable 3 is movable on the frame 1 along the first horizontal direction D1 to switch between the first station and the second station. The transfer mechanism 4 is used to grab products and accessories and is configured to place products on the worktable 3 when the worktable 3 is in the first station and to place accessories on the worktable 3 when the worktable 3 is in the second station.

[0039] In this embodiment of the automatic screw fastening machine, the workflow is as follows: The worktable 3 is located at the first station. The transfer mechanism 4 picks up the product and places it on the worktable 3. Then, the worktable 3 moves towards the second station in the first horizontal direction D1. During this process, the moving mechanism 21 in the screw fastening unit 2 drives the positioning detection mechanism 22 to perform positioning detection on the product on the worktable 3. Subsequently, the worktable 3 continues to move and switches to the second station. At this time, the transfer mechanism 4 picks up the accessory and places it on the worktable 3, and the accessory and product are aligned and have holes to be fastened. Then, the worktable 3 moves in the reverse direction, the moving mechanism 21 moves, and drives the positioning detection mechanism 22 and the screw fastening mechanism 23 connected to it to move. Specifically, the positioning detection mechanism 22 first performs positioning detection on the holes to be fastened, and then, based on the positioning detection, the screw fastening mechanism 23 fastens the screw in the hole to be fastened, thereby achieving automatic screw fastening.

[0040] Because the positioning detection mechanism 22 and the screw-fastening mechanism 23 can be raised and lowered and moved along the second horizontal direction D2 under the drive of the moving mechanism 21, and the worktable 3 can move along the first horizontal direction D1, after the product and accessories are loaded onto the worktable 3, the worktable 3 and the screw-fastening unit 2 can move simultaneously, thereby effectively shortening the cycle time. On the other hand, since the positioning detection mechanism 22 and the screw-fastening mechanism 23 are integrated on the moving mechanism 21 and arranged sequentially along the second horizontal direction D2, the movement of the moving mechanism 21 along the second horizontal direction D2 can realize the rapid switching of the positioning detection mechanism 22 and the screw-fastening mechanism 23, simplifying the switching action and further shortening the cycle time, thereby improving the screw-fastening efficiency.

[0041] It should be noted that, since the worktable 3 can move along the first horizontal direction D1, and the moving mechanism 21 can be raised and lowered and can move along the second horizontal direction D2, and the second horizontal direction D2 is perpendicular to the first horizontal direction D1, through the movement cooperation between the worktable 3 and the moving mechanism 21, the positioning detection mechanism 22 and the worktable 3, as well as the screw-locking mechanism 23 and the worktable 3, have three degrees of freedom in each direction. Furthermore, the positioning detection mechanism 22 and the screw-locking mechanism 23 are arranged sequentially on the second horizontal direction D2, and they do not interfere with each other, thereby ensuring that the positioning detection mechanism 22 and the screw-locking mechanism 23 can operate normally.

[0042] Please see Figure 3 In a specific embodiment, at least two worktables 3 are provided, and each worktable 3 is arranged sequentially on the second horizontal direction D2. Products and accessories can be distributed to multiple worktables 3. The moving mechanism 21 can be switched to be opposite to different worktables 3 by moving on the second horizontal direction D2, so that the positioning detection mechanism 22 and the screw fastening mechanism 23 can perform positioning detection and screw fastening on different worktables 3 respectively, which is conducive to expanding the production scale.

[0043] It should be noted that, Figure 3 The two workbenches 3 are located at the first and second workstations, respectively. Figure 3 The positions of the two workbenches 3 in the text are used to indicate the first and second workstations mentioned throughout the text.

[0044] In practical applications, different workbenches 3 can be staggered in the first horizontal direction D1. For example, when one workbench 3 is tightening screws, another workstation can be in the process of loading products or accessories, thereby reducing the standby time of the screw tightening unit 2 and the transfer mechanism 4 and improving production efficiency.

[0045] Please see Figure 3 and Figure 4 In a specific embodiment, the frame 1 is provided with a first slide rail 11 extending along the second horizontal direction D2. The moving mechanism 21 includes a first sliding seat 211, a second slide rail 212, and a second sliding seat 213. The first sliding seat 211 is slidably disposed on the first slide rail 11. The second slide rail 212 extends vertically and is fixedly connected to the first sliding seat 211. The second sliding seat 213 is slidably disposed on the second slide rail 212 and is fixedly connected to the positioning detection mechanism 22 and the screw locking mechanism 23, respectively. When the first sliding seat 211 slides on the first slide rail 11, it can drive the second slide rail 212 and the second sliding seat 213 to move in the second horizontal direction D2. When the second sliding seat 213 slides on the second slide rail 212, it can be raised and lowered. This realizes the movable characteristics of the moving mechanism 21 in two degrees of freedom, and the structure is relatively compact and simple.

[0046] Please see Figure 3 In a specific embodiment, the transfer mechanism 4 includes a first robotic arm 41 and a second robotic arm 42 mounted on the frame 1. The first robotic arm 41 is located on one side of the first workstation in the second horizontal direction D2, and is used to grasp and place products. The second robotic arm 42 is located on the side of the second workstation away from the first workstation in the first horizontal direction D1, and is used to grasp and place accessories. When the first robotic arm 41 places the product on the workbench 3, the second robotic arm 42 can prepare accessories in advance, reducing the waiting time of a traditional single robotic arm. Furthermore, the arrangement of the first robotic arm 41 and the second robotic arm 42 can reduce the risk of intersection of robotic arm movement paths and mechanism interference.

[0047] Please see Figures 1 to 3 In a specific embodiment, the automatic screw fastening machine further includes a production line mechanism 5, which is mounted on the frame 1 and located on the side of the first workstation away from the second workstation in the first horizontal direction D1. The production line mechanism 5 connects to the worktable 3 of the first workstation and works in conjunction with the first robotic arm 41. It can serve as an input channel for products to be processed or an output channel for finished products already fastened, or simultaneously as both, significantly improving the continuous operation capability of the automatic screw fastening machine. In this embodiment, the production line mechanism 5 serves as the output channel for finished products already fastened.

[0048] Please see Figure 1 and Figure 2 In a specific embodiment, the automatic screw fastening machine further includes a housing 8, which is mounted on the frame 1. The screw fastening unit 2, the transfer mechanism 4, and the worktable 3 are all located inside the housing 8. The housing 8 has a discharge port 81 on the side wall near the first station in the first horizontal direction D1, and a feed port 82 on the side wall near the first robot arm 41 in the second horizontal direction D2. The feed port 82 allows the first robot arm 41 to extend out of the housing 8. The assembly line mechanism 5 extends along the first horizontal direction D1 and passes through the discharge port 81, so that part of it is located inside the housing 8 and the rest is located outside the housing 8.

[0049] The housing 8 is used to provide external protection and reduce the interference of the external environment on the screw-locking process. The first robot arm 41 extends out of the housing 8 through the feed port 82 in the second horizontal direction D2 and can directly grab the workpiece to be processed outside. The assembly line mechanism 5 extends through the discharge port 81 to the inside and outside of the housing 8, so that the process of locking the product inside the housing 8 and unloading the product to the outside of the housing 8 forms a continuous production line.

[0050] Please see Figures 1 to 3In a specific embodiment, the frame 1 is provided with an attachment slot 12 for accommodating attachments. The attachment slot 12 is located on the side of the second workstation away from the first workstation in the first horizontal direction D1, and is sequentially arranged with the second robot arm 42 in the second horizontal direction D2. The attachment slot 12 has an upward-facing opening 121, which is used for the second robot arm 42 to enter and exit the attachment slot 12. The layout of the attachment slot 12, the second workstation, and the second robot arm 42 facilitates the robot arm's movement, enabling it to smoothly grasp the attachments in the attachment slot 12 and place them on the worktable 3 located in the second workstation. The upward-facing opening 121 allows the second robot arm 42 to directly and vertically grasp the attachments from the top, reducing the difficulty of grasping.

[0051] In this embodiment, there are two worktables 3 and two accessory slots 12. One accessory slot 12 is arranged side by side with one worktable 3 in the first horizontal direction D1, and the other accessory slot 12 is arranged side by side with the other worktable 3 in the first horizontal direction D1. The second robot arm 42 is located between the two accessory slots 12 in the second horizontal direction D2, which makes it convenient for the second robot arm 42 to grab accessories from the two accessory slots 12 respectively and place the accessories of each accessory slot 12 on the corresponding worktable 3. This arrangement can also simplify the difficulty for the second robot arm 42 to transfer accessories to different worktables 3.

[0052] Please see Figures 1 to 3 In a specific embodiment, the automatic screw fastening machine further includes a mobile trolley 6, which is used to transport accessories and has a discharge window 61 on its side. The accessory slot 12 has a feeding window 122 on its side wall away from the first workstation in the first horizontal direction D1, and / or on its side wall away from the second robot arm 42 in the second horizontal direction D2. Both the mobile trolley 6 and the accessory slot 12 are equipped with horizontal conveying mechanisms 7. When the discharge window 61 of the mobile trolley 6 is aligned with the feeding window 122 of the accessory slot 12, the horizontal conveying mechanism 7 in the mobile trolley 6 connects with the horizontal conveying mechanism 7 in the accessory slot 12. When the discharge window 61 of the mobile trolley 6 is aligned with the feeding window 122 of the accessory slot 12, the horizontal conveying mechanisms 7 in both connect to form a continuous transmission channel, realizing fully automatic transfer of accessories from the mobile trolley 6 to the accessory slot 12, reducing manual handling, and thus improving the continuous operation capability and material supply stability of the automatic screw fastening machine.

[0053] In this embodiment, the feed window 122 of the accessory slot 12 is opened on the housing 8.

[0054] In actual use, the accessories are stacked on the tray, and the tray and the accessories on it are transported as a whole from the horizontal conveyor 7 in the mobile wheelbarrow 6 to the horizontal conveyor 7 in the accessory slot 12.

[0055] Please see Figure 2 and Figure 3 In a specific embodiment, the horizontal conveying mechanism 7 includes a roller mechanism 71 and a cover 72. The roller mechanism 71 includes several horizontally spaced rollers 711, with adjacent rollers 711 being drive-connected. The cover 72 covers the roller mechanism 71, and its top has a clearance opening 721 for each roller 711 to extend out. The cover 72 can protect the roller mechanism 71 from dust, oil, etc., thereby extending its service life. The clearance opening 721 of the cover 72 ensures that the roller mechanism 71 can convey accessories through the coordinated rotation of multiple rollers 711, which has the advantages of simple structure and strong stability.

[0056] Please see Figure 3 In a specific embodiment, the workbench 3 includes a positioning component 31 and a base plate 32. The positioning component 31 includes a first movable member 311, a second movable member 312, a first stop 313, and a second stop 314. The first movable member 311 and the first stop 313 are respectively located on both sides of the base plate 32 in a first horizontal direction D1, and the second movable member 312 and the second stop 314 are respectively located on both sides of the base plate 32 in a second horizontal direction D2. The first movable member 311 can move along the first horizontal direction D1, and the second movable member 312 can move along the second horizontal direction D2. The first movable member 311 and the first stop 313 cooperate to position the product in the first horizontal direction D1, and the second movable member 312 and the second stop 314 cooperate to position the product in the second horizontal direction D2, ensuring stable operation in each process.

[0057] In the above embodiments, the end of the first robotic arm 41 is provided with a barcode scanning component and a vacuum adsorption component. The barcode scanning component and the vacuum adsorption component include vacuum adsorption rods arranged in a ring. The barcode scanning component is located within the ring of each vacuum adsorption rod. The vacuum adsorption rods grasp or place the product by adsorption. The barcode scanning component is used to scan the barcode or QR code on the product to record product information.

[0058] In the above embodiments, the frame 1 is also provided with a lower CCD mechanism 13, and the lower CCD mechanism 13 is located on one side of the second workstation in the second horizontal direction D2. The lower CCD mechanism 13 is used to take pictures and scan the attachments grasped by the second robot arm 42 to ensure that the attachments can be correctly placed and aligned with the product.

[0059] Although the present invention has been described with reference to several typical embodiments, it should be understood that the terminology used is descriptive and exemplary, and not restrictive. Since the present invention can be embodied in many forms without departing from the spirit or essence of the invention, it should be understood that the above embodiments are not limited to any of the foregoing details, but should be interpreted broadly within the spirit and scope defined by the appended claims. Therefore, all variations and modifications falling within the scope of the claims or their equivalents should be covered by the appended claims.

Claims

1. An automatic screw fastening machine, characterized in that, include: The frame has a first station and a second station arranged sequentially in a first horizontal direction; A screw fastening machine unit is located between the first workstation and the second workstation in the first horizontal direction. The screw fastening machine unit includes a moving mechanism, a positioning detection mechanism and a screw fastening mechanism. The positioning detection mechanism and the screw fastening mechanism are sequentially arranged on the moving mechanism along the second horizontal direction. The moving mechanism is vertically and movable along the second horizontal direction on the frame, and the second horizontal direction is perpendicular to the first horizontal direction. The workbench is movable along the first horizontal direction on the frame to switch between the first workstation and the second workstation; A transfer mechanism for gripping products and accessories, and configured to place products on the workbench when the workbench is in the first station, and to place accessories on the workbench when the workbench is in the second station.

2. The automatic screw fastening machine according to claim 1, characterized in that, The workbench is provided in at least two locations, and each workbench is arranged sequentially in the second horizontal direction.

3. The automatic screw fastening machine according to claim 1, characterized in that, The frame is provided with a first slide rail extending along the second horizontal direction; The moving mechanism includes a first sliding seat, a second slide rail, and a second sliding seat. The first sliding seat is slidably disposed on the first slide rail. The second slide rail extends vertically and is fixedly connected to the first sliding seat. The second sliding seat is slidably disposed on the second slide rail and is fixedly connected to the positioning detection mechanism and the screw locking mechanism, respectively.

4. The automatic screw fastening machine according to claim 1, characterized in that, The transfer mechanism includes a first robotic arm and a second robotic arm mounted on the frame. The first robotic arm is located on one side of the first workstation in the second horizontal direction and is used to grasp and place products. The second robotic arm is located on the side of the second workstation away from the first workstation in the first horizontal direction and is used to grasp and place accessories.

5. The automatic screw fastening machine according to claim 4, characterized in that, It also includes an assembly line mechanism, which is mounted on the frame and located on the side of the first workstation away from the second workstation in the first horizontal direction.

6. The automatic screw fastening machine according to claim 5, characterized in that, The frame is provided with an attachment slot for accommodating attachments. The attachment slot is located on the side of the second workstation away from the first workstation in the first horizontal direction, and is arranged sequentially with the second robot arm in the second horizontal direction. The attachment slot has an upward opening, and the opening is used for the second robot arm to enter and exit the attachment slot.

7. The automatic screw fastening machine according to claim 6, characterized in that, It also includes a mobile wheelbarrow used for transporting accessories, and has a discharge window on its side; The accessory slot has a feeding window on the side wall away from the first workstation in the first horizontal direction, and / or the accessory slot has a feeding window on the side wall away from the second robot arm in the second horizontal direction; Both the mobile bucket car and the accessory trough are equipped with horizontal conveying mechanisms. When the discharge window of the mobile bucket car is aligned with the feed window of the accessory trough, the horizontal conveying mechanism in the mobile bucket car is connected to the horizontal conveying mechanism in the accessory trough.

8. The automatic screw fastening machine according to claim 7, characterized in that, The horizontal conveying mechanism includes a roller mechanism and a cover. The roller mechanism includes several horizontally spaced rollers, and adjacent rollers are connected by a drive. The cover is placed on top of the roller mechanism, and its top has a clearance opening for each roller to extend out.

9. The automatic screw fastening machine according to claim 5, characterized in that, It also includes a housing, which is mounted on the frame. The screw fastening unit, the transfer mechanism and the worktable are all located inside the housing. The housing has a discharge port on the side wall near the first work station in the first horizontal direction and a feed port on the side wall near the first robot in the second horizontal direction. The feed port allows the first robot to extend out of the housing. The assembly line mechanism extends along the first horizontal direction and passes through the discharge port, such that part of it is located inside the housing and the remainder is located outside the housing.

10. The automatic screw fastening machine according to claim 1, characterized in that, The workbench includes a positioning component and a base plate. The positioning component includes a first movable component, a second movable component, a first stop block, and a second stop block. The first movable component and the first stop block are respectively located on both sides of the base plate in the first horizontal direction. The second movable component and the second stop block are respectively located on both sides of the base plate in the second horizontal direction. The first movable component can move along the first horizontal direction, and the second movable component can move along the second horizontal direction.

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