Multi-angle adaptive automatic screw locking machine

Abstract

The utility model discloses a multi-angle adaptive automatic screw locking machine which comprises a base, a cross beam piece is fixedly arranged on the base, a screw locking assembly used for screw locking is arranged on the cross beam piece, a displacement assembly is arranged on the base, the displacement assembly comprises a first guide rail, and the two ends of the first guide rail are fixedly arranged on the base. According to the technical scheme, by means of the design of the sliding base assembly and the displacement assembly which are matched in a multi-angle mode, full automation of the screw locking process is achieved, the problem that manual operation is needed when screws are installed in a non-horizontal mode is effectively solved, and the screw locking efficiency is improved. And the arc-shaped adjusting block is matched with the first adjusting roller and the second adjusting roller in an abutting mode, precise control of a servo motor part is combined, the angle of the screw locking assembly can be flexibly adjusted so that the screw locking assembly can adapt to screw mounting holes with different inclination angles, and the production efficiency is remarkably improved.

Description

Technical Field

[0001] This utility model relates to the field of screw fastening machine technology, specifically an automatic screw fastening machine with multi-angle adaptation. Background Technology

[0002] As described in the published patent CN217551710U, "An Automatic Screw-Locking Device with Multi-Angle Swing," screw-locking devices are now widely used in the assembly of mechanical equipment, toys, and home appliances. In the assembly of some high-precision instruments and equipment, even higher-standard screw-locking devices are required for processing and production. For example, in the assembly of electronic components such as mobile phones and computers, high-precision screw-locking devices are used, which have precise force control and will not damage the product due to excessive force.

[0003] However, some products' screws are not on a horizontal plane and need to be tightened from other angles, which often requires manual tightening. This consumes a lot of manpower, and prolonged manual work increases labor intensity, causing eye fatigue and loss of concentration, resulting in products that do not meet requirements and affecting production efficiency. Furthermore, the precision of manually tightened screws cannot be guaranteed to meet the requirements. Therefore, it is necessary to solve the existing technical problems.

[0004] As described in the published patent CN220217439U, "An Adjustment Mechanism for a Y-axis Base of an Automatic Screw Fastening Machine," an automatic screw fastening machine uses various electric and pneumatic components to automatically feed, tighten, and inspect screws. This simplifies the screw fastening process, reducing the number of manual workers and minimizing human error. It is a typical non-standard automated device. Automatic screw fastening machines are mainly divided into: handheld screw fastening machines, multi-axis automatic screw fastening machines, and coordinate-type automatic screw fastening machines. Existing automatic screw fastening machines can only tighten screws vertically, failing to tighten from threaded holes at different angles, thus reducing the machine's working quality.

[0005] In summary, some existing products require screws to be tightened from other angles because the screws are not on a horizontal plane. For these products, screw tightening often requires manual operation, which results in low work efficiency. Utility Model Content

[0006] To overcome the shortcomings mentioned above, this utility model aims to provide a multi-angle adaptive automatic screw fastening machine that can solve the above problems.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] An automatic screw fastening machine with multi-angle adaptability includes a base, on which a crossbeam is fixedly mounted, and on which a screw fastening assembly for screw fastening is provided.

[0009] The base is provided with a displacement component, which includes a first guide rail fixed at both ends on the base, a mounting groove below the first guide rail, and a slide block assembly slidably sleeved on the first guide rail.

[0010] The slide assembly includes a sliding base, a bearing plate fixed to the upper end of the sliding base, and an arc-shaped adjusting block fixed to the lower end face of the sliding base.

[0011] The inner bottom surface of the mounting groove is equipped with a first adjusting roller and a second adjusting roller that abut against the arc-shaped adjusting block. The upper end surface of the first guide rail is provided with an arc-shaped fitting surface that abuts against the lower end surface of the bearing plate. The two ends of the first adjusting roller and the second adjusting roller are respectively fixed with servo motor components for driving the operation.

[0012] The front and rear ends of the mounting groove are respectively equipped with a front gear component and a rear gear component. A toothed belt component for meshing transmission is sleeved between the front gear component and the rear gear component. A displacement receiving groove is opened on the sliding base. The toothed belt component is fixed to the side wall of the displacement receiving groove to drive the sliding base to move back and forth.

[0013] As a further embodiment of this utility model: the lower end face of the sliding base is provided with a first arc-shaped guide groove and a second arc-shaped guide groove that are symmetrically arranged on the left and right. A first arc-shaped guide block and a second arc-shaped guide block are fixed on the base. The first arc-shaped guide block slides and abuts in the first arc-shaped guide groove, and the second arc-shaped guide block slides and abuts in the second arc-shaped guide groove.

[0014] As a further embodiment of this utility model: a first limiting mounting plate and a second limiting mounting plate are respectively formed on the left and right side walls of the mounting groove, and a first limiting protrusion and a second limiting protrusion are respectively fixed on the first limiting mounting plate and the second limiting mounting plate, and the two sides of the lower end face of the sliding base are respectively limited and cooperated with the first limiting protrusion and the second limiting protrusion.

[0015] As a further embodiment of this utility model: the first adjusting roller and the second adjusting roller are symmetrically arranged along the vertical central axis of the arc-shaped adjusting block.

[0016] As a further embodiment of this utility model: the first adjusting roller and the second adjusting roller are provided with first shallow toothed grooves evenly arranged in the circumferential direction, the first shallow toothed grooves abut against the arc-shaped adjusting block, and the first shallow toothed grooves pass through the first adjusting roller and the second adjusting roller from front to back.

[0017] As a further embodiment of this utility model: the surface of the arc-shaped adjusting block is uniformly provided with a second shallow tooth groove that meshes with and limits the first shallow tooth groove, and the second shallow tooth groove extends through the arc-shaped adjusting block from front to back.

[0018] As a further embodiment of this utility model: multiple displacement components are arranged in parallel.

[0019] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0020] This utility model's technical solution achieves full automation of the screw-locking process through the design of a multi-angle adaptable sliding block assembly and a displacement assembly. This effectively solves the problem of manual operation required when screws are not installed horizontally, thereby significantly improving production efficiency and reducing labor intensity. The abutting cooperation between the arc-shaped adjusting block and the first and second adjusting rollers, combined with the precise control of the servo motor, allows the screw-locking assembly to flexibly adjust its angle to adapt to screw mounting holes with different tilt angles. At the same time, the forward and backward displacement of the sliding base driven by the toothed belt ensures accurate adaptation of the screw position, avoiding fatigue errors and insufficient precision caused by manual operation, and significantly improving production efficiency. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural view of the present invention;

[0022] Figure 2 This is a top view of the present invention;

[0023] Figure 3 yes Figure 2 A cross-sectional view along the AA direction;

[0024] Figure 4 yes Figure 3 A partial view at point B in the middle;

[0025] Figure 5 This is a perspective view of the internal structure of the mounting groove in this utility model.

[0026] The reference numerals and names in the figure are as follows:

[0027] Base-100, crossbeam-101, screw assembly-102, displacement assembly-103, first guide rail-104, mounting groove-105, slide assembly-106, sliding base-107-107, bearing plate-108, arc-shaped adjusting block-109, first adjusting roller-110, second adjusting roller-111, arc-shaped adapter surface-112, front gear-114, rear gear-115, toothed belt-116, displacement receiving groove-117, first arc-shaped guide groove-118, second arc-shaped guide groove-119, first arc-shaped guide block-120, second arc-shaped guide block-121, first limiting mounting plate-122, second limiting mounting plate-123, first limiting protrusion-124, second limiting protrusion-125, first shallow tooth groove-126, second shallow tooth groove-127. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] Please see Figure 1-5 An automatic screw fastening machine with multi-angle adaptation includes a base 100, on which a crossbeam 101 is fixed, and a screw fastening assembly 102 for screw fastening is provided on the crossbeam 101.

[0030] The base 100 is provided with a displacement component 103. The displacement component 103 includes a first guide rail 104 with both ends fixed on the base 100. The first guide rail 104 is provided with a mounting groove 105 below it. A slide block component 106 is slidably sleeved on the first guide rail 104.

[0031] The slide assembly 106 includes a sliding base 107, a bearing plate 108 fixed to the upper end of the sliding base 107, and an arc-shaped adjusting block 109 fixed to the lower end surface of the sliding base 107.

[0032] The inner bottom surface of the mounting groove 105 is equipped with a first adjusting roller 110 and a second adjusting roller 111 that abut against the arc-shaped adjusting block 109. The upper end surface of the first guide rail 104 is provided with an arc-shaped fitting surface 112 that abuts against the lower end surface of the bearing plate 108. The two ends of the first adjusting roller 110 and the second adjusting roller 111 are respectively fixed with servo motor components for driving the operation.

[0033] The front and rear ends of the mounting groove 105 are respectively equipped with a front gear component 114 and a rear gear component 115. A toothed belt component 116 for meshing transmission is sleeved between the front gear component 114 and the rear gear component 115. A displacement receiving groove 117 is opened on the sliding base 107. The toothed belt component 116 is fixed on the side wall of the displacement receiving groove 117 to drive the sliding base 107 to move back and forth.

[0034] like Figure 5 As shown, the toothed belt 116 drives the sliding base 107 to move under the drive of the front gear 114 and the rear gear 115 fixed to the front and rear ends of the mounting groove 105, so that the entire sliding base assembly 106 (including the sliding base 107, the bearing plate 108 and the arc-shaped adjusting block 109) can slide back and forth accurately and stably along the first guide rail 104, automatically sending the workpiece to the position below the screw fastening station, replacing manual handling and positioning;

[0035] like Figure 4 As shown, to address the tightening problem of non-horizontal screw holes, this utility model technical solution incorporates an angle adjustment mechanism.

[0036] The first adjusting roller 110 and the second adjusting roller 111 in the mounting groove 105 can actively rotate and change their contact position with the arc-shaped adjusting block 109 at the lower end of the slide assembly 106 under the precise drive of the servo motors at both ends. By controlling the selection angle of the two adjusting rollers through the servo motor, the slide assembly 106 (together with the workpiece it carries) can be precisely forced to produce the required angle deflection.

[0037] The arc-shaped fitting surface 112 designed on the upper end face of the first guide rail 104 always maintains close contact with the lower end face of the support plate 108, providing necessary compliant support for the angle deflection of the slide assembly 106, ensuring that the adjustment process is smooth and does not deviate from the guide.

[0038] The servo motor, as the drive source for the adjusting roller, provides closed-loop precise control of rotation angle, speed, and torque. This enables the angle adjustment of the slide assembly 106 to be not only automated but also highly repeatable and programmable, meeting the stringent requirements of precision assembly for screw fastening angles. The aforementioned angle adjustment function allows the equipment to handle the tightening of non-horizontal screws fully automatically, without any manual intervention. The automated operation is fast and can work continuously, significantly shortening the assembly time of a single product and improving overall production efficiency. The precise displacement and angle adjustment of the servo control ensures that the screw fastening angle is consistent each time, making it particularly suitable for fields with high requirements for precision and consistency (such as the assembly of electronic components like mobile phones and computers).

[0039] This solution, through the innovative collaborative design of displacement and angle adjustment mechanisms, not only achieves full automation of the screw-tightening process, but also critically solves the technical challenge of tightening non-horizontal screw holes, thereby bringing significant comprehensive benefits in terms of improving efficiency, reducing costs, ensuring quality and consistency, and enhancing production stability.

[0040] This utility model's technical solution, through the design of a multi-angle adaptable sliding block assembly 106 and a displacement assembly 103, achieves full automation of the screw-locking process, effectively solving the problem of manual operation required when screws are not installed horizontally. This significantly improves production efficiency and reduces labor intensity. The abutment cooperation between the arc-shaped adjusting block 109 and the first adjusting roller 110 and the second adjusting roller 111, combined with the precise control of the servo motor, allows the screw-locking assembly 102 to flexibly adjust its angle to adapt to screw mounting holes with different tilt angles. At the same time, the forward and backward displacement of the sliding base 107 driven by the toothed belt 116 ensures precise adaptation of the screw position, avoiding fatigue errors and insufficient accuracy caused by manual operation, and significantly improving production efficiency.

[0041] In this embodiment of the present invention, the lower end face of the sliding base 107 is provided with a first arc-shaped guide groove 118 and a second arc-shaped guide groove 119 that are symmetrically arranged from left to right. A first arc-shaped guide block 120 and a second arc-shaped guide block 121 are fixed on the base 100. The first arc-shaped guide block 120 slides and abuts in the first arc-shaped guide groove 118, and the second arc-shaped guide block 121 slides and abuts in the second arc-shaped guide groove 119.

[0042] like Figure 4 As shown, by adding a first arc-shaped guide groove 118 and a second arc-shaped guide groove 119 that are symmetrically arranged on the left and right sides, and a first arc-shaped guide block 120 and a second arc-shaped guide block 121 that slide and abut with them, the stability and guiding accuracy of the slide assembly 106 when it is deflected at multiple angles are significantly enhanced. This effectively prevents the slide assembly 106 from lateral offset or shaking that may occur during angle adjustment, ensuring the accuracy and controllability of workpiece posture adjustment. This further improves the automation adaptation capability, processing accuracy and long-term operational reliability of the entire screw fastening equipment when dealing with non-horizontal screw holes.

[0043] In this embodiment of the utility model, a first limiting mounting plate 122 and a second limiting mounting plate 123 are respectively formed on the left and right side walls of the mounting groove 105. A first limiting protrusion 124 and a second limiting protrusion 125 are respectively fixed on the first limiting mounting plate 122 and the second limiting mounting plate 123. The two sides of the lower end face of the sliding base 107 are respectively limited and cooperated with the first limiting protrusion 124 and the second limiting protrusion 125.

[0044] like Figure 4As shown, by adding a first limiting mounting plate 122, a second limiting mounting plate 123, and a first limiting protrusion 124 and a second limiting protrusion 125 fixed on the left and right side walls of the mounting groove 105, and forming a limiting fit with the two sides of the lower end face of the sliding base 107, the lateral movement range of the slide assembly 106 during displacement or angle adjustment is effectively constrained. This prevents the slide assembly 106 from accidentally derailing or excessively deflecting due to inertia, vibration, or uneven force. It significantly improves the stability, safety, and long-term reliability of the equipment operation, ensures the continuity and positional accuracy of precision locking operations, and reduces the risk of equipment downtime or even damage due to mechanical failures (such as slide jamming or misalignment).

[0045] In this embodiment of the present invention, the first adjusting roller 110 and the second adjusting roller 111 are symmetrically arranged along the vertical central axis of the arc-shaped adjusting block 109;

[0046] like Figure 4 As shown, by symmetrically arranging the first adjusting roller 110 and the second adjusting roller 111 along the vertical central axis of the arc-shaped adjusting block 109, the points of application of the adjusting force on both sides are always balanced about the central axis, thereby significantly improving the stability and accuracy of the angle adjustment process of the slide assembly 106.

[0047] The symmetrical layout ensures that when the servo motor drives the dual adjusting rollers to act on the arc-shaped adjusting block 109, the risk of torsional deformation or jamming of the slide assembly 106 due to force skew is reduced.

[0048] The symmetrical positions of the two rollers synchronously abutting the arc surface make the movement of the sliding base 107 more stable and smooth during the angle adjustment process, reducing vibration and impact, protecting precision components and extending the equipment life;

[0049] The symmetrical force application mechanism ensures uniform deformation of the arc-shaped adjustment block 109. Combined with the guide groove and the limiting protrusion, a multi-dimensional constraint system is formed, which improves the repeatability and positioning accuracy of the workpiece tilt angle adjustment.

[0050] In this embodiment of the present invention, the first adjusting roller 110 and the second adjusting roller 111 are provided with first shallow toothed grooves 126 evenly arranged in the circumferential direction. The first shallow toothed grooves 126 abut against the arc-shaped adjusting block 109 and the first shallow toothed grooves 126 pass through the first adjusting roller 110 and the second adjusting roller 111 from front to back.

[0051] like Figure 4As shown, shallow toothed grooves 126 are evenly arranged and extend through the front and back of the first adjusting roller 110 and the second adjusting roller 111, and form a meshing contact with the arc-shaped adjusting block 109. The shallow toothed grooves and the arc-shaped adjusting block 109 form a micro meshing structure, which significantly increases the friction coefficient of the contact surface and effectively prevents relative sliding between the adjusting roller and the arc-shaped adjusting block 109 when the servo motor drives the adjusting roller to rotate, thus ensuring the accurate transmission of angle adjustment.

[0052] The evenly distributed shallow grooves make the force exerted by the adjusting roller on the arc-shaped adjusting block 109 continuous and linear, eliminating local stress concentration. Combined with the symmetrical layout of the first adjusting roller 110 and the second adjusting roller 111, the smoothness and accuracy of angle adjustment are further improved.

[0053] In this embodiment of the present invention, the arc-shaped adjusting block 109 is provided with a second shallow toothed groove 127 that meshes with and limits the first shallow toothed groove 126 on the periphery of its surface, and the second shallow toothed groove 127 passes through the arc-shaped adjusting block 109 from front to back.

[0054] like Figure 4 As shown, a second shallow toothed groove 127 is added to the periphery of the surface of the arc-shaped adjusting block 109, which meshes with the first shallow toothed groove 126 and runs through the front and back. The second shallow toothed groove 127 and the first shallow toothed groove 126 on the adjusting roller form a bidirectional staggered meshing structure, which upgrades the contact surface from point / line friction to distributed meshing force transmission, completely eliminating the risk of relative sliding between the rollers during the adjustment process and ensuring the effect of servo motor drive force transmission.

[0055] The double shallow tooth groove meshing system discretizes angle adjustment into micro-tooth pitch level displacement, and combined with the pulse control of the servo motor, it achieves fine angle step adjustment.

[0056] In this embodiment of the present invention, multiple displacement components 103 are arranged in parallel.

[0057] Multiple sets of displacement components 103 independently drive the slide assembly 106 to operate synchronously, enabling the equipment to perform screw-locking operations on multiple workpieces simultaneously;

[0058] The modular parallel structure supports differentiated configurations (such as locking heads of different screw specifications), enabling mixed-flow production of multiple workpieces through programming. Switching only requires software adjustments, thus improving equipment reuse rate.

[0059] In one embodiment, the screw fastening assembly 102 is a common technology in the prior art (such as the screw fastening assembly 102 described in the published patent CN220217439U, "An adjustment mechanism for a Y-axis base 100 for an automatic screw fastening machine"), and will not be described again here.

[0060] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A multi-angle adaptive automatic screw fastening machine, characterized in that, Includes a base (100), on which a crossbeam (101) is fixed, and on which a screw-locking assembly (102) for screw-locking is provided. The base (100) is provided with a displacement component (103), the displacement component (103) includes a first guide rail (104) with both ends fixed on the base (100), a mounting groove (105) is provided below the first guide rail (104), and a slide block assembly (106) is slidably sleeved on the first guide rail (104). The slide assembly (106) includes a sliding base (107), a bearing plate (108) fixed to the upper end of the sliding base (107), and an arc-shaped adjusting block (109) fixed to the lower end face of the sliding base (107). The inner bottom surface of the mounting groove (105) is equipped with a first adjusting roller (110) and a second adjusting roller (111) that abut against the arc-shaped adjusting block (109). The upper end surface of the first guide rail (104) is provided with an arc-shaped fitting surface (112) that abuts against the lower end surface of the bearing plate (108). The two ends of the first adjusting roller (110) and the second adjusting roller (111) are respectively fixed with servo motor components for driving the operation. The front and rear ends of the mounting groove (105) are respectively equipped with a front gear component (114) and a rear gear component (115). A toothed belt component (116) for meshing transmission is sleeved between the front gear component (114) and the rear gear component (115). A displacement receiving groove (117) is opened on the sliding base (107). The toothed belt component (116) is fixed on the side wall of the displacement receiving groove (117) to drive the sliding base (107) to move back and forth.

2. The multi-angle adaptive automatic screw fastening machine according to claim 1, characterized in that, The lower end face of the sliding base (107) is provided with a first arc-shaped guide groove (118) and a second arc-shaped guide groove (119) that are symmetrical from left to right. A first arc-shaped guide block (120) and a second arc-shaped guide block (121) are fixed on the base (100). The first arc-shaped guide block (120) slides and abuts in the first arc-shaped guide groove (118), and the second arc-shaped guide block (121) slides and abuts in the second arc-shaped guide groove (119).

3. The automatic screw fastening machine with multi-angle adaptation according to claim 2, characterized in that, The left and right side walls of the mounting groove (105) are respectively formed with a first limiting mounting plate (122) and a second limiting mounting plate (123). The first limiting mounting plate (122) and the second limiting mounting plate (123) are respectively fixed with a first limiting protrusion (124) and a second limiting protrusion (125). The two sides of the lower end face of the sliding base (107) are respectively limited and cooperated with the first limiting protrusion (124) and the second limiting protrusion (125).

4. The multi-angle adaptive automatic screw fastening machine according to any one of claims 1-3, characterized in that, The first adjusting roller (110) and the second adjusting roller (111) are symmetrically arranged along the vertical central axis of the arc-shaped adjusting block (109).

5. The multi-angle adaptive automatic screw fastening machine according to claim 4, characterized in that, The first adjusting roller (110) and the second adjusting roller (111) are provided with first shallow toothed grooves (126) evenly arranged in the circumferential direction. The first shallow toothed grooves (126) abut against the arc-shaped adjusting block (109). The first shallow toothed grooves (126) pass through the first adjusting roller (110) and the second adjusting roller (111) from front to back.

6. The multi-angle adaptive automatic screw fastening machine according to claim 5, characterized in that, The arc-shaped adjusting block (109) has a second shallow tooth groove (127) that meshes with and limits the first shallow tooth groove (126) on its periphery. The second shallow tooth groove (127) passes through the arc-shaped adjusting block (109) from front to back.

7. A multi-angle adaptive automatic screw fastening machine according to claim 1, 2, 3, 5, or 6, characterized in that, Multiple displacement components (103) are arranged in parallel.

Images