A multi-specification screw synchronous locking device

Abstract

The application discloses a multi-specification screw synchronous locking device, which comprises a driving worm, a plurality of driving members and a multi-station execution unit. The driving worm is driven by a driving unit and simultaneously engages the plurality of driving members, and each driving member is in transmission connection with a group of multi-station execution units. Each group of multi-station execution units comprises execution gears engaged in sequence, an execution shaft arranged at the center of the execution gears and an end screwing tool, so that the plurality of screwing tools are synchronously rotated. The execution shaft is axially slidable and is provided with elastic members, so as to automatically compensate for screws with different locking space heights; the end is provided with a torque limiter, the output torque can be independently set; and the screwing tool can be replaced, so as to adapt to screws with different specifications. The device synchronously drives a plurality of groups of execution units through a single worm, has a compact structure, can synchronously lock screws with multiple positions, multiple heights and multiple specifications at one time, significantly improves the efficiency, reduces the cost, and has the functions of automatic height compensation and accurate torque control.

Description

Technical Field

[0001] This invention relates to the field of electronic assembly equipment technology, and in particular to a multi-specification screw synchronous fastening device. Background Technology

[0002] In the assembly and production of servers, smart card modules, and various electronic devices, products need to be simultaneously fastened to different positions using screws. Fastening a single screw can easily lead to misalignment, preventing the product from being fastened quickly and stably, thus affecting the overall quality of the product. Furthermore, the fastening process requires the assembly of screws of various sizes, and there is a need to simultaneously fasten these screws.

[0003] Existing technologies typically employ multi-motor, multi-axis fastening equipment, with each fastening station equipped with an independent motor and reduction gear, each controlled independently. While this fastening structure can achieve synchronous fastening of multiple screws, the equipment is bulky, and the multi-motor synchronous control is complex, resulting in high overall costs. Summary of the Invention

[0004] This invention provides a multi-specification screw synchronous fastening device, which aims to solve the problems of existing technologies that use multi-motor multi-axis fastening equipment to achieve synchronous fastening of multiple screws, resulting in a large overall size of the equipment, complex synchronous control of multiple motors, and high overall cost.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: This invention provides a multi-specification screw synchronous fastening device, including a drive worm gear, one end of which is connected to the execution end of a drive unit; the drive worm gear is axially meshed with a plurality of drive components, each of which is connected to a set of multi-station execution units. Each of the multi-station execution units includes several sequentially meshing execution gears and an execution shaft disposed at the center of the several execution gears; each of the several execution shafts is provided with a screwing tool at its end.

[0006] In one embodiment, the axes of the plurality of driving members are arranged in parallel.

[0007] In one embodiment, in each of the multi-station execution units, the execution gear at the end is connected to the drive member for transmission.

[0008] In one embodiment, the driving element is a driving gear, which meshes with the execution gear at the end of the multi-station execution unit.

[0009] In one embodiment, a drive shaft is provided at the center of the drive gear, and a screwing tool is provided at the end of the drive shaft.

[0010] In one embodiment, the device further includes a mounting box, with the two ends of the drive worm gear rotatably disposed on the two side walls of the mounting box; Several mounting holes are provided on one end face of the mounting box, and the actuator shaft is rotatably disposed in the mounting holes.

[0011] In one embodiment, the actuating shaft is slidably disposed within the mounting hole along the axial direction; The actuating shaft is provided with an elastic element, which pushes the actuating shaft to move in the direction of the tightening tool.

[0012] In one embodiment, the elastic element is a spring, which is sleeved on the actuating shaft; one end of the spring abuts against the side wall of the mounting box, and the other end abuts against a boss on the outer side wall of the actuating shaft.

[0013] In one embodiment, several execution gears of several multi-station execution units are arranged in a matrix.

[0014] In one embodiment, a torque limiter is provided at the end of the actuating shaft, and the tightening tool is connected to the torque limiter.

[0015] The beneficial effects of this invention compared to existing technologies are as follows: This invention mainly consists of a driving worm gear, several driving components, and a multi-station execution unit. All the driving components and the multi-station execution unit are driven by the same driving worm gear. Specifically, the driving worm gear meshes with the several driving components, enabling the driving worm gear to simultaneously drive multiple driving components to rotate. Each driving component is connected to a corresponding set of multi-station execution units, allowing each driving component to drive its corresponding set of multi-station execution units to work. This causes the execution gear in each set of multi-station execution units to rotate, thereby driving the corresponding execution shaft to rotate, and subsequently driving a tightening tool located at the end of the execution shaft to rotate. The tightening tool can be a screwdriver bit, a hexagonal screwdriver bit, or other structures.

[0016] In other words, this invention uses a single drive worm gear to simultaneously rotate multiple screw-tightening tools, enabling the simultaneous tightening of screws at different positions in a single operation. Furthermore, the screw-tightening tool at the end of each actuating shaft can be replaced as needed to accommodate screws of different sizes. Additionally, in practical use, the length of different actuating shafts can be adjusted to adapt to screws with varying tightening heights, achieving automatic tightening at different heights. Compared to existing technologies employing multiple motors and shafts, this invention offers a compact structure, ease of maintenance, and significantly reduced equipment size and operating costs.

[0017] The above description is merely an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention, it can be implemented according to the contents of the specification. In order to make the above and other objects, features and advantages of the present invention more obvious and understandable, preferred embodiments are described in detail below. Attached Figure Description

[0018] Figure 1 A three-dimensional structural diagram of a multi-specification screw synchronous fastening device provided in an embodiment of the present invention; Figure 2 This is a top view of a multi-specification screw synchronous fastening device provided in an embodiment of the present invention; Figure 3 for Figure 2 A cross-sectional view along the AA direction; Figure 4 for Figure 2 A cross-sectional view along the BB direction.

[0019] Figure label: 1. Drive unit; 2. Drive worm gear; 3. Driving component; 31. First driving component; 32. Second driving component; 33. Third driving component; 34. Fourth driving component; 311. Driving shaft; 4. Multi-station execution unit; 41. First multi-station execution unit; 411. Execution gear; 412. Execution shaft; 4121. Boss; 413. Tightening tool; 414. Elastic element; 42. Second multi-station execution unit; 43. Third multi-station execution unit; 44. Fourth multi-station execution unit. 5. Mounting box; 51. Mounting hole; 6. Torque limiter. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] It should be understood that, when used in this specification and the appended claims, the terms "comprising" and "including" indicate the presence of the described features, integrals, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components and / or collections thereof.

[0022] It should also be understood that the terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the invention. As used in this specification and the appended claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise.

[0023] It should also be further understood that the term "and / or" as used in this specification and the appended claims refers to any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0024] Please see Figure 1-4 This invention provides a multi-specification screw synchronous fastening device, including a drive worm 2, one end of which is connected to the execution end of a drive unit 1; the drive worm 2 is axially meshed with a plurality of drive components 3, each of which is connected to a set of multi-station execution units 4. Each of the multi-station execution units 4 includes several sequentially meshing execution gears 411 and an execution shaft 412 disposed at the center of the several execution gears 411; each of the several execution shafts 412 is provided with a screwing tool 413 at its end.

[0025] This embodiment provides a multi-specification screw synchronous fastening device, mainly composed of a drive worm gear 2, several drive components 3, and a multi-station execution unit 4. The drive components 3 and the multi-station execution unit 4 are all driven by the same drive worm gear 2. Specifically, the drive worm gear 2 meshes with the drive components 3, enabling the drive worm gear 2 to simultaneously drive multiple drive components 3 to rotate. Each drive component 3 is connected to a corresponding set of multi-station execution units 4, allowing each drive component 3 to drive its corresponding set of multi-station execution units 4 to work. This causes the execution gear 411 in each set of multi-station execution units 4 to rotate, thereby driving the corresponding execution shaft 412 to rotate, which in turn drives the tightening tool 413 located at the end of the execution shaft 412 to rotate. The tightening tool 413 can be a screwdriver bit, a hexagonal screwdriver bit, or other structures.

[0026] In other words, this application uses a single drive worm gear 2 to simultaneously rotate multiple screw-tightening tools 413, enabling simultaneous tightening of screws at different positions in a single operation. Furthermore, the screw-tightening tool 413 at the end of each actuating shaft 412 can be replaced as needed to accommodate screws of different sizes. In practical use, it can also automatically adapt to different tightening heights, allowing for simultaneous tightening of screws at varying heights. Compared to existing multi-motor, multi-shaft solutions, this application's solution is more compact, easier to maintain, and significantly reduces equipment size and operating costs.

[0027] In this embodiment, the drive unit 1 drives the drive worm 2 to rotate, thereby driving the entire structure to move. The drive unit 1 can be a motor or other rotary drive structure, including but not limited to a servo motor, stepper motor, DC motor, or pneumatic motor. The drive worm 2 can be of various worm types, such as cylindrical worm, circular arc cylindrical worm, and toroidal worm, to adapt to different load-bearing capacity and transmission efficiency requirements.

[0028] In practical use, the number of driving components 3 and the number of multi-station execution units 4 can be set as needed. In this embodiment, four driving components 3 are provided, and the four driving components 3 correspond to four sets of multi-station execution units 4. Each multi-station execution unit 4 is formed by three execution gears 411 arranged in a straight line and meshing sequentially. Specifically, the four driving components 3 are the first driving component 31, the second driving component 32, the third driving component 33, and the fourth driving component 34, which are sequentially connected to the first multi-station execution unit 41, the second multi-station execution unit 42, the third multi-station execution unit 43, and the fourth multi-station execution unit 44.

[0029] In one embodiment, the axes of several of the drive members 3 are arranged in parallel.

[0030] In this embodiment, the axis of the driving component 3 is set parallel to each other, so that the driving component 3 can be located on the same plane, which facilitates the assembly of the overall structure.

[0031] In one embodiment, in each of the multi-station execution units 4, the end-end execution gear 411 is connected to the drive member 3 for transmission.

[0032] For example, the actuating gear 411 at the end of the first multi-station execution unit 41 is connected to the drive member 3 via a transmission connection. There are various transmission connection methods; for example, the drive member 3 is coaxially connected to a transmission gear, which meshes with the actuating gear 411 in this embodiment. In other words, the power of the drive member 3 can be transmitted to the actuating gear 411 through a relevant mechanical mechanism.

[0033] In this embodiment, in order to simplify the transmission structure between the drive member 3 and the actuating gear 411 and to make the transmission efficiency higher, the drive member 3 in this embodiment is a drive gear, which meshes with the actuating gear 411 at the end of each of the multi-station execution units 4.

[0034] In this embodiment, the driving component 3 is configured as a driving gear, which directly meshes with the actuating gear 411 to drive the transmission, thereby improving the overall transmission efficiency and making the overall structure more streamlined and compact.

[0035] In a further embodiment, since the driving component 3 adopts a driving gear, in order to further utilize the power of the driving gear, a driving shaft 311 is provided at the center of the driving gear in this embodiment, and a screwing tool 413 is provided at the end of the driving shaft 311.

[0036] In this embodiment, a screw-tightening tool 413 is provided at the end of the drive shaft 311 at the center of the drive gear shaft, so that when the drive gear rotates, it can also drive the corresponding screw-tightening tool 413 to rotate, and the screw-tightening tool 413 can also lock the corresponding screw.

[0037] In one embodiment, the device further includes a mounting box 5, with the two ends of the drive worm gear 2 rotatably disposed on the two side walls of the mounting box 5.

[0038] A plurality of mounting holes 51 are provided on one end face of the mounting box 5, and the actuating shaft 412 is rotatably disposed in the mounting holes 51.

[0039] In this embodiment, the drive worm gear 2 and the multi-station execution unit 4 are both installed inside the mounting box 5, making the overall structure more compact.

[0040] In a further embodiment, the actuating shaft 412 is slidably disposed within the mounting hole 51 along the axial direction; The actuating shaft 412 is provided with an elastic element 414, which pushes the actuating shaft 412 to move toward the screwing tool 413.

[0041] In this embodiment, the actuating shaft 412 can be slidably disposed in the mounting hole 51 along the axis. Thus, when several planes or parts protrude at a high height and screws are provided on the planes or parts, the actuating shaft 412 corresponding to the planes or parts can automatically slide along the axis, thereby automatically adapting to screws of different spatial heights and realizing automatic locking of screws of different spatial heights, making it more convenient to use.

[0042] In this embodiment, the elastic element 414 is a spring, which is sleeved on the actuating shaft 412; one end of the spring abuts against the side wall of the mounting box 5, and the other end abuts against the boss 4121 on the outer side wall of the actuating shaft 412.

[0043] In this embodiment, the actuating shaft 412 can move towards the screwing tool 413 under the push of the spring, and the spring abuts against the circumference of the actuating shaft 412, which can provide a stable thrust to the actuating shaft 412, ensuring that the screwing tool 413 at the end of the actuating shaft 412 can correspond to the screw.

[0044] In one embodiment, several execution gears 411 of several multi-station execution units 4 are arranged in a matrix.

[0045] Specifically, the execution gears 411 in the first multi-station execution unit 41, the second multi-station execution unit 42, the third multi-station execution unit 43, and the fourth multi-station execution unit 44 are all arranged along a straight line, and the first multi-station execution unit 41, the second multi-station execution unit 42, the third multi-station execution unit 43, and the fourth multi-station execution unit 44 are arranged side by side to form a matrix arrangement.

[0046] In a further embodiment, a torque limiter 6 is provided at the end of the actuating shaft 412, and the screwing tool 413 is connected to the torque limiter 6.

[0047] In this embodiment, by providing a torque limiter 6 at the end of the rotating shaft 412, the maximum torque generated by the rotation of the corresponding rotating shaft 412 can be adjusted by adjusting the torque of the torque limiter 6. Thus, in actual use, the torque of the torque limiter 6 can be adjusted according to the torque required by the specific screw.

[0048] The working principle of this invention is as follows: The drive unit 1 drives the drive worm 2 to rotate, and the drive worm 2 simultaneously engages multiple drive components 3. Each drive component 3 is then connected to a set of multi-station execution units 4.

[0049] Each multi-station execution unit 4 is composed of multiple execution gears 411 meshing in sequence. The drive unit 3 drives the end execution gear 411 to rotate, thereby causing all execution gears 411 to rotate synchronously, driving each execution shaft 412 and its end screwing tool 413 to rotate, thus achieving screw fastening.

[0050] The actuating shaft 412 can slide axially and is equipped with an elastic element 414. When encountering screws of different heights, the corresponding actuating shaft 412 can automatically move axially so that the screw tightening tool 413 always fits the screw.

[0051] The end of the rotating shaft 412 is equipped with a torque limiter 6, which can set the maximum output torque as needed to adapt to the fastening requirements of screws of different specifications.

[0052] Multiple drive components 3 have parallel axes, and the execution gears 411 of each multi-station execution unit 4 can be arranged in a straight line or matrix, resulting in a compact overall structure.

[0053] Compared with the prior art, this application has the following advantages: (1) Synchronous fastening of screws in multiple positions: Multiple screw tightening tools 413 can be driven simultaneously by a single drive worm gear 2, and screws in different positions can be fastened in one go, greatly improving efficiency.

[0054] (2) Adaptable to various specifications: The screwing tool 413 is replaceable and can be used to fasten screws of different specifications; the length of the actuating shaft 412 is adjustable and can be used to fit screws of different heights, making it highly versatile.

[0055] (3) Compact structure and small size: Compared with the multi-motor and multi-shaft scheme, this device has a simple transmission chain, high integration, and significantly reduces the size of the equipment.

[0056] (4) Low cost and easy maintenance: fewer parts and simpler structure, reducing manufacturing costs and maintenance difficulty.

[0057] (5) High transmission efficiency: The drive gear and the actuator gear 411 are directly meshed, reducing intermediate transmission links and improving efficiency.

[0058] (6) Automatic height compensation: The elastic element 414 pushes the actuator shaft 412 to automatically adapt to the change in screw height, without the need for manual adjustment, making operation convenient.

[0059] (7) Precise torque control: The torque of each screwing tool 413 can be set independently by the torque limiter 6 to prevent over-tightening or under-tightening and ensure the quality of locking.

[0060] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in the present invention, and these modifications or substitutions should all be covered within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A multi-specification screw synchronous fastening device, characterized in that, It includes a drive worm gear, one end of which is connected to the execution end of a drive unit; the drive worm gear is meshed with a plurality of drive components along its axial direction, and each drive component is connected to a set of multi-station execution units. Each of the multi-station execution units includes several sequentially meshing execution gears and an execution shaft disposed at the center of the several execution gears; each of the several execution shafts is provided with a screwing tool at its end.

2. The multi-specification screw synchronous fastening device according to claim 1, characterized in that, The axes of several of the driving components are arranged in parallel.

3. The multi-specification screw synchronous fastening device according to claim 1, characterized in that, In each of the multi-station execution units, the execution gear at the end is connected to the drive component for transmission.

4. The multi-specification screw synchronous fastening device according to claim 3, characterized in that, The driving component is a driving gear, which meshes with the execution gear at the end of the multi-station execution unit.

5. The multi-specification screw synchronous fastening device according to claim 4, characterized in that, A drive shaft is located at the center of the drive gear, and a screwing tool is located at the end of the drive shaft.

6. The multi-specification screw synchronous fastening device according to claim 1, characterized in that, It also includes a mounting box, with the two ends of the drive worm gear rotatably mounted on the two side walls of the mounting box; Several mounting holes are provided on one end face of the mounting box, and the actuator shaft is rotatably disposed in the mounting holes.

7. The multi-specification screw synchronous fastening device according to claim 6, characterized in that, The actuator shaft is slidably disposed within the mounting hole along the axial direction. The actuating shaft is provided with an elastic element, which pushes the actuating shaft to move in the direction of the tightening tool.

8. The multi-specification screw synchronous fastening device according to claim 7, characterized in that, The elastic element is a spring, which is sleeved on the actuating shaft; one end of the spring abuts against the side wall of the mounting box, and the other end abuts against the boss on the outer side wall of the actuating shaft.

9. The multi-specification screw synchronous fastening device according to claim 1, characterized in that, The execution gears of the multi-station execution units are arranged in a matrix.

10. The multi-specification screw synchronous fastening device according to any one of claims 1 to 9, characterized in that, A torque limiter is provided at the end of the actuating shaft, and the screwing tool is connected to the torque limiter.

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