Locking mechanism and screw locking machine

Abstract

The utility model discloses a locking mechanism and a screw locking machine, and relates to the technical field of screw locking, and the locking mechanism comprises a base plate, a locking assembly, a storage disc and a storage driving assembly. Wherein the locking assembly is arranged on the base plate and used for sucking screws and placing the screws into workpieces to lock the screws, the storage disc is movably arranged below the locking assembly and used for storing a plurality of screws, the storage driving assembly is connected with the base plate and the storage disc, and the storage driving assembly is used for driving the storage disc to move relative to the base plate. And thus, the screws on the storage disc sequentially move to the position below the locking assembly. According to the locking mechanism, the screw locking technological process is simplified, and the screw locking efficiency is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of screw locking, in particular to a locking mechanism and a screw locking machine. BACKGROUND

[0002] The screw locking machine is an automatic device capable of completing a large amount of screw locking work in a short time, and the use of the screw locking machine can greatly improve the efficiency and precision of screw assembly.

[0003] At present, the common screw locking machine mainly includes a feeding mechanism and a locking mechanism. The feeding mechanism is used to supply screws to the locking mechanism for locking and fixing the screws by the locking mechanism. However, the current feeding mechanism and locking mechanism are designed separately. Each time the screw is locked, the chuck of the locking mechanism needs to be controlled to run to the feeding mechanism for feeding, and then the locking mechanism is controlled to run to the locking position for locking and fixing the screw. Since the feeding operation needs to be performed each time, and the feeding stroke of the locking mechanism is too long, the locking time is long, which will inevitably affect the efficiency of screw locking. CONTENT OF THE UTILITY MODEL

[0004] The purpose of the present application is to provide a locking mechanism and a screw locking machine, which solves the problem of low work efficiency caused by repeated feeding during screw locking.

[0005] To achieve the above purpose, the present application provides a locking mechanism, comprising:

[0006] a base plate;

[0007] a locking assembly arranged on the base plate, used for sucking and placing screws into a workpiece to lock the screws;

[0008] a storage tray movably arranged below the locking assembly, used for storing a plurality of screws;

[0009] a storage driving assembly connected with the base plate and the storage tray, used for driving the storage tray to move relative to the base plate, so that the screws on the storage tray move to the lower side of the locking assembly in turn.

[0010] In some embodiments, the storage tray comprises:

[0011] a connecting portion connected with the storage driving assembly;

[0012] a storage portion located at the periphery of the connecting portion, the storage portion comprising a plurality of storage stations distributed in the circumferential direction, the storage stations being used for storing screws.

[0013] In some embodiments, an avoiding groove is arranged between any two adjacent storage stations, the avoiding groove being used to provide an avoiding space when the locking assembly locks the screws.

[0014] In some embodiments, the storage disc is a disc body, and each of the storage stations is equidistantly arranged at the edge of the disc body in a circumferential direction, and the connecting portion is arranged at the center of the disc body.

[0015] In some embodiments, the storage driving assembly comprises:

[0016] a rotating driving member connected with the connecting portion, used to drive the storage disc to rotate so as to switch different storage stations;

[0017] a lifting driving member mounted on the base plate and connected with the rotating driving member, used to drive the rotating driving member and the storage portion to move in a direction close to or away from the locking assembly, so that the screw on the storage station is placed under the suction station of the locking assembly.

[0018] In some embodiments, the locking assembly comprises:

[0019] a suction nozzle arranged towards the corresponding storage station to suck the screw in the corresponding storage station;

[0020] a locking driving member and a locking head mounted on the locking driving member, the locking driving member being movably connected with the base plate, the locking driving member being used to move along the axis direction of the suction nozzle and drive the locking head to rotate to lock the screw.

[0021] In some embodiments, the base plate is provided with a guide rail, and the locking driving member is connected with a guide block, the guide block being in sliding fit with the guide rail to guide the movement of the locking driving member relative to the base plate.

[0022] In some embodiments, the locking assembly further comprises a driving cylinder arranged on the base plate and connected with the locking driving member to drive the locking driving member to move along the axis direction of the suction nozzle.

[0023] In some embodiments, the locking mechanism further comprises a detection assembly used to detect the position of the screw on the workpiece to determine whether the screw is locked in place.

[0024] The application also provides a screw locking machine comprising the locking mechanism as described in any one of the above.

[0025] With respect to the above background, the locking mechanism provided by the embodiments of the present application comprises a base plate, a locking assembly, a storage tray and a storage driving assembly. The locking assembly is arranged on the base plate and is used to suck and place screws into workpieces to lock the screws. The storage tray is movably arranged below the locking assembly and is used to store a plurality of screws. The storage driving assembly is connected with the base plate and the storage tray and is used to drive the storage tray to move relative to the base plate so that the screws on the storage tray move to the position below the locking assembly in sequence.

[0026] In operation, first, a certain number of screws are stored in the storage tray. After the storage tray is filled, the locking assembly is moved to the position above the mounting hole of the workpiece. Then, the storage driving assembly is used to drive the storage tray to move so that the screws on the storage tray are placed in the suction position below the locking assembly. Finally, the locking assembly is used to suck and place the screws into the workpiece to lock the screws.

[0027] The locking mechanism thus arranged has the following beneficial effects. The locking assembly, the storage tray and the storage driving assembly are integrally arranged in the locking mechanism. The screws to be locked are stored in the storage tray in advance. The locking assembly directly takes the screws from the storage tray when locking the screws, so that the operation of taking the screws is not required each time the screws are locked. The above arrangement mode is used to take the screws after all the screws on the storage tray are locked, which simplifies the process flow of locking the screws and improves the efficiency of locking the screws. BRIEF DESCRIPTION OF DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the related art, the drawings needed to be used in the embodiments or the related art description will be briefly introduced. Obviously, the drawings in the following description are only embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative effort on the basis of the provided drawings.

[0029] Figure 1 FIG. 1 is a structural schematic view of the locking mechanism in the embodiments of the present application.

[0030] In the drawings:

[0031] 10 - base plate;

[0032] 20 - locking assembly, 21 - suction nozzle, 22 - locking driving member, 23 - locking head, 24 - driving cylinder;

[0033] 30 - storage tray, 31 - connecting portion, 32 - storage portion, 321 - storage position, 322 - avoiding groove;

[0034] 40 - storage driving assembly, 41 - rotating driving member, 42 - lifting driving member. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of the present application.

[0036] In order for those skilled in the art to better understand the present application, the present application will be further described in detail below with reference to the drawings and specific embodiments.

[0037] It should be noted that the "upper end, lower end, left side, right side" and other orientation words described below are defined based on the drawings of the specification.

[0038] Please refer to Figure 1 , Figure 1 The structure of the locking mechanism in the embodiments of the present application is shown in the figure.

[0039] The locking mechanism provided by the embodiments of the present application comprises a base plate 10, a locking assembly 20, a storage tray 30 and a storage driving assembly 40.

[0040] The base plate 10 is used as a carrier of the locking mechanism, and is used to mount the locking assembly 20, the storage tray 30 and the storage driving assembly 40.

[0041] The locking assembly 20 is arranged on the base plate 10, and is used to suck a screw and place the screw into a workpiece to lock the screw. The workpiece is provided with a threaded mounting hole matched with the screw to be locked, and the locking assembly 20 is powered to make the screw rotate into the corresponding threaded mounting hole of the workpiece.

[0042] The storage tray 30 is movably arranged below the locking assembly 20, and is used to store a plurality of screws. The storage tray 30 can be a circular storage tray, and the screws on the storage tray 30 can be arranged in a circumferential direction, so as to be sequentially sucked by the storage tray 30 with the rotation of the storage tray 30.

[0043] The storage driving assembly 40 is connected with the base plate 10 and the storage tray 30, and is used to drive the storage tray 30 to move relative to the base plate 10, so that the screws on the storage tray 30 move to the lower side of the locking assembly 20 in sequence. The storage driving assembly 40 can comprise a combination structure of a rotating driving member 41 and a lifting driving member 42, or can be a mechanical hand structure. The mechanical hand structure can realize rotating, lifting and swinging actions of the storage tray 30, so as to make the screws on the storage tray 30 move to the lower side of the locking assembly 20 in sequence.

[0044] When the locking mechanism works, firstly, a certain number of screws are stored in the storage tray 30, after the storage tray 30 is filled, the locking assembly 20 is moved above the workpiece mounting hole, then the storage tray 30 is driven to move by the storage driving assembly 40, so that the screws on the storage tray 30 are placed below the suction station of the locking assembly 20, finally, the screws are sucked by the locking assembly 20 and placed into the workpiece, so as to achieve the purpose of locking the screws.

[0045] In the locking mechanism provided by the application, the locking assembly 20, the storage tray 30 and the storage driving assembly 40 are integrally arranged, the screws to be locked are stored in the storage tray 30 in advance, and the screws are directly taken from the storage tray 30 by the locking assembly 20 during locking, so that the taking operation is not needed every time the screws are locked, and the above arrangement mode only takes the screws after all the screws on the storage tray 30 are locked, which simplifies the process flow of screw locking and improves the efficiency of screw locking. In addition, the locking mechanism provided by the application can be applied to various different screws, and there is no length-diameter ratio limitation for the screws, so the application range is wider.

[0046] In some embodiments, the storage tray 30 comprises a connecting part 31 and a storage part 32, wherein the connecting part 31 is connected with the storage driving assembly 40, the storage part 32 is located at the periphery of the connecting part 31, and the storage part 32 comprises a plurality of storage stations 321 distributed in the circumferential direction, and the storage stations 321 are used for storing screws.

[0047] As can be seen, during taking, the storage tray 30 is transported to the feeding position of the feeding mechanism, and the storage process of the storage tray 30 can be completed by filling each storage station 321 distributed in the circumferential direction on the storage tray 30 with screws.

[0048] In order to provide a space for the locking assembly 20 to lock the screws, an avoiding groove 322 is arranged between any two adjacent storage stations 321, and the avoiding groove 322 is used for providing a space for the locking assembly 20 to lock the screws.

[0049] Specifically, the number of the storage stations 321 on the storage tray 30 can be set as N (N is in the range of 15-25), and the number of the avoiding grooves 322 is also set as N, and all the storage stations 321 and the avoiding grooves 322 are uniformly distributed in the circumferential direction of the storage tray 30. After the screws on the corresponding storage station 321 are sucked by the locking assembly 20, the storage tray 30 can be rotated by a preset angle by the storage driving assembly 40, so that the avoiding groove 322 adjacent to the storage station 321 from which the screws are taken on the storage tray 30 faces the locking assembly 20, so that a space for the locking assembly 20 to lock the screws can be provided, and the problem that the normal locking work of the screws is affected by the existence of the storage tray 30 is solved.

[0050] In some embodiments, after the screw on the corresponding storage station 321 is sucked by the screw locking assembly 20, the storage disc 30 can also be driven away by the storage driving assembly 40 to provide a space for the screw locking assembly 20 to lock the screw.

[0051] Of course, according to actual needs, the storage disc 30 is a disc body, and each storage station 321 is equidistantly arranged along the circumferential direction of the edge of the disc body, and the connecting part 31 is arranged at the center of the disc body. After the storage driving assembly 40 is connected with the connecting part 31, the power of the storage driving assembly 40 can be transmitted to the connecting part 31 to drive the movement of the storage part 32.

[0052] In some embodiments, the storage driving assembly 40 includes a rotating driving part 41 and a lifting driving part 42. The rotating driving part 41 is connected with the connecting part 31, and the rotating driving part 41 is used to drive the rotation of the storage disc 30 to switch different storage stations 321. The lifting driving part 42 is installed on the base plate 10 and connected with the rotating driving part 41. The lifting driving part 42 is used to drive the rotating driving part 41 and the storage part 32 to move along the direction of approaching or moving away from the locking assembly 20, so that the screw on the storage station 321 is placed in the suction station below the locking assembly 20.

[0053] The rotating driving part 41 can be a servo motor. The main shaft of the servo motor is connected to the center position of the connecting part 31. The rotating power is provided by the servo motor to drive the storage disc 30 to rotate along its axis direction. For example, 20 storage stations 321 can be arranged on the storage disc 30. In this way, the servo motor can drive the storage disc 30 to rotate by 18 degrees to switch to another storage station 321.

[0054] The lifting driving part 42 can be a lifting cylinder. The cylinder body of the lifting cylinder is installed on the base plate 10, and the end of the telescopic rod of the lifting cylinder is connected with the servo motor. The lifting cylinder is used to drive the servo motor and the storage disc 30 to move up and down, so that the screw on the storage disc 30 is transferred to a height that can be sucked by the locking assembly 20.

[0055] In some embodiments, the locking assembly 20 includes a suction nozzle 21, a locking driving part 22, and a locking head 23. The suction nozzle 21 is arranged towards the corresponding storage station 321 to suck the screw in the corresponding storage station 321. The locking head 23 is installed on the locking driving part 22. The locking driving part 22 is movably connected with the base plate 10. The locking driving part 22 is used to move along the axis direction of the suction nozzle 21 and drive the rotation of the locking head 23 to lock the screw.

[0056] It should be noted that the locking driving member 22 is specifically an electric screwdriver or an electric driver, and the locking head 23 is specifically an electric driver head, which can extend into the suction nozzle 21 and extend out of the suction nozzle 21 downward to screw the screw sucked by the suction nozzle 21 into the workpiece to realize the locking function of the screw.

[0057] In addition, the suction nozzle 21 is specifically a pipe body with a suction function, which is connected to a vacuum assembly. The vacuum assembly is used to form negative pressure in the pipe body, so as to achieve the purpose of sucking the screw. Of course, the suction nozzle 21 can be fixed on a buffer structure, which has a certain buffering effect on the suction nozzle 21, so that the suction nozzle 21 can be displaced relative to the electric driver head when the electric driver head extends into the suction nozzle 21, thereby improving the service life of the suction nozzle 21.

[0058] The suction nozzle 21, the locking head 23 and the locking driving member 22 are coaxially arranged. During the movement of the locking driving member 22 relative to the base plate 10, the electric driver head can extend into the suction nozzle 21 and extend out of the suction nozzle 21 downward, and the locking driving member 22 can set the torque value required for locking the screw according to the actual locking requirement, so that the corresponding screw is locked in the corresponding mounting hole of the workpiece through the torque value provided by the locking driving member 22.

[0059] In order to guide the movement of the locking driving member 22 relative to the base plate 10, a guide rail is arranged on the base plate 10, and a guide block connected with the locking driving member 22 is arranged on the guide rail in a sliding manner. In this way, the movement of the locking driving member 22 relative to the base plate 10 can be guided, so as to ensure the stability and reliability during the locking process of the screw.

[0060] In some embodiments, the locking assembly 20 further comprises a driving cylinder 24 arranged on the base plate 10, which is connected with the locking driving member 22 and is used to provide lifting power to drive the locking driving member 22 to move along the axis direction of the suction nozzle 21.

[0061] In order to determine whether the screw is locked in place, the locking mechanism further comprises a detection assembly for detecting the position of the screw on the workpiece to determine whether the screw is locked in place. The detection assembly can be mounted on the storage tray 30, specifically mounted on the connecting portion close to the storage portion, or mounted on the suction nozzle 21.

[0062] Furthermore, the locking mechanism further comprises a control assembly in communication with the detection assembly, the locking driving member 22 and the driving cylinder 24. The detection assembly is used to detect the position of the screw on the workpiece and transmit the position information of the screw to the control assembly, so that the control assembly can determine whether the screw is locked in place.

[0063] In some embodiments, the detection component can be a height sensor, which is configured to detect the relative height between the screw on the workpiece and a certain point on the edge of the mounting hole on the workpiece for mounting the screw, and transmit the collected height signal to the control component, which is configured to determine whether the screw is locked in place.

[0064] In some embodiments, the detection component can also be a visual camera, which is configured to take a picture of the screw on the workpiece and transmit the picture information to the control component, which is configured to obtain the relative position information of the screw on the workpiece and the workpiece body after processing the image, and determine whether the screw is locked in place.

[0065] After determining that the screw is locked in place, the control component can send a stop command to the locking driving member 22 and the driving cylinder 24, so as to stop the locking action.

[0066] In summary, the specific process of the locking mechanism provided by the present application can include:

[0067] a. The locking mechanism moves to the screw feeder;

[0068] b. The screw feeder places the screw on the storage work station 321 on the storage disc 30;

[0069] c. After the storage disc 30 is filled with screws, the locking mechanism moves above the mounting hole of the workpiece;

[0070] d. The rotation driving member 41 drives the storage disc 30 to rotate, so as to place the corresponding storage work station 321 on the storage disc 30 below the suction nozzle 21;

[0071] e. The lifting driving member 42 drives the storage disc 30 to move up and down, so as to transfer the corresponding screw on the storage disc 30 to a height that can be sucked by the suction nozzle 21, and the suction nozzle 21 sucks the screw;

[0072] f. The rotation driving member 41 drives the storage disc 30 to rotate by an angle, so that the corresponding escape groove 322 on the storage disc 30 faces the suction nozzle 21;

[0073] g. The driving cylinder 24 drives the locking driving member 22 and the locking head 23 to lock the screw, and the locking driving member 22 locks the screw according to the torque value;

[0074] h. After locking, the locking driving member 22 returns to the original position;

[0075] i. The locking mechanism moves above the next mounting hole of the workpiece, and the screw locking action is repeated.

[0076] The locking mechanism provided by the application can store screws in the storage tray 30, and the screws can be directly taken from the storage tray 30 during locking, thereby improving the locking efficiency of the screws.

[0077] The screw locking machine provided by the application comprises the locking mechanism described in the above specific embodiments; other parts of the screw locking machine can refer to the related art, and will not be expanded herein.

[0078] It should be noted that in the present specification, the relationship terms such as first and second are only used to distinguish one entity from another, and do not necessarily require or imply any such actual relationship or order between the entities.

[0079] The locking mechanism and the screw locking machine provided by the application are described in detail above. The principles and implementation manners of the application are described by applying specific examples in the present specification, and the above description of the examples is only used to help understand the scheme of the application and the core idea thereof. It should be pointed out that, for those skilled in the art, some improvements and modifications can be made to the application without departing from the principles of the application, and these improvements and modifications also fall within the protection scope of the application.

Claims

1. A locking mechanism, characterized in that, include: substrate(10); A screw fastening assembly (20) is disposed on the substrate (10) for picking up screws and placing screws into the workpiece to fasten screws; A storage tray (30) is movably disposed below the locking assembly (20) for storing a number of screws; The storage drive assembly (40) is connected to the substrate (10) and the storage tray (30) and is used to drive the storage tray (30) to move relative to the substrate (10) so that the screws on the storage tray (30) move sequentially to the bottom of the locking assembly (20).

2. The locking mechanism as described in claim 1, characterized in that, The storage tray (30) includes: The connecting part (31) is connected to the storage drive assembly (40); The storage section (32) is located on the periphery of the connecting section (31). The storage section (32) includes a plurality of storage stations (321) distributed along the circumferential direction. The storage stations (321) are used to store screws.

3. The locking mechanism as described in claim 2, characterized in that, A clearance groove (322) is provided between any two adjacent storage stations (321), and the clearance groove (322) is used to provide clearance space when the screw is tightened in the fastening assembly (20).

4. The locking mechanism as described in claim 2, characterized in that, The storage tray (30) is a disc body, and each of the storage stations (321) is equally spaced along the circumference of the disc body. The connecting part (31) is located at the center of the disc body.

5. The locking mechanism as described in claim 2, characterized in that, The storage drive assembly (40) includes: A rotary drive (41) is connected to the connecting part (31) and is used to drive the storage tray (30) to rotate so as to switch different storage stations (321). The lifting drive (42) is mounted on the base plate (10) and connected to the rotating drive (41) to drive the rotating drive (41) and the storage part (32) to move in a direction close to or away from the locking assembly (20) so that the screw on the storage station (321) is placed in the suction station below the locking assembly (20).

6. The locking mechanism as described in claim 2, characterized in that, The locking component (20) includes: A suction nozzle (21) is provided facing the corresponding storage station (321) to pick up the screws in the corresponding storage station (321); The locking drive (22) and the locking head (23) are mounted on the locking drive (22). The locking drive (22) is movably connected to the base plate (10). The locking drive (22) is used to move along the axial direction of the nozzle (21) and to drive the locking head (23) to rotate in order to lock the screw.

7. The locking mechanism as described in claim 6, characterized in that, The substrate (10) is provided with a guide rail, and the locking drive (22) is connected to a guide block. The guide block slides with the guide rail to guide the movement of the locking drive (22) relative to the substrate (10).

8. The locking mechanism as described in claim 6, characterized in that, The locking assembly (20) further includes a driving cylinder (24), which is disposed on the substrate (10) and connected to the locking drive member (22) to drive the locking drive member (22) to move along the axial direction of the suction nozzle (21).

9. The locking mechanism as described in any one of claims 1-8, characterized in that, The fastening mechanism also includes a detection component, which is used to detect the position of the screw on the workpiece to determine whether the screw is properly fastened.

10. A screw fastening machine, characterized in that, Includes the locking mechanism as described in any one of claims 1-9.

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