Locking device and locking equipment
By introducing a buffer and a sensing mechanism into the fastening device, the problem of fastener breakage in automated fastening equipment is solved, and an efficient and stable fastener fastening process is achieved.
Patent Information
- Application Number
- CN202423227211.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-24
- Publication Date
- 2026-02-17
- Estimated Expiration
- 2034-12-24
AI Technical Summary
Existing automated fastening equipment is prone to rod breakage during fastener fastening, affecting the fastening quality and efficiency. Furthermore, the use of high-power components is limited by rotational inertia, resulting in low fastening efficiency.
A buffer is introduced into the locking device, and the power component and locking mechanism are connected through a transmission assembly to buffer the rotational inertia, reduce the impact force on the fastener, and the locking depth is precisely controlled by a sensing mechanism. A high-power motor is used to improve the locking efficiency.
It effectively reduces fastener breakage, improves locking quality and efficiency, and ensures stable fastening of fasteners at high speeds.
Smart Images
Figure CN223917187U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to automatic locking device technical field, especially locking device and locking equipment. BACKGROUND
[0002] Automatic fastener locking equipment is a kind of equipment that automatic system completes the feeding, locking and other processes of fastener, equipment can be taken fastener and transported to specified position by automatic control, and then threaded fastener is tightened in place by pneumatic or electric screwdriver, so it is recycled, without manual operation.But in the prior art of automatic locking equipment technology, the locking completed fastener is prone to rod breakage phenomenon, which affects the locking quality of fastener. SUMMARY
[0003] The utility model discloses a locking device and locking equipment, which aims to reduce the rod breakage phenomenon of fastener and improve the efficiency and locking quality of fastener locking.
[0004] To achieve the above object, the locking device provided by the utility model comprises a shell, a power component, a locking mechanism and a transmission mechanism, the power component is installed on the shell, the locking mechanism is installed on the shell, the locking mechanism has a rotatable output shaft, the output shaft is used to lock fastener at a preset position, the transmission assembly is transmissionally connected with the power component and the locking mechanism, and the transmission assembly comprises a buffer component, the buffer component is used to buffer the rotational inertia generated when the power component drives the locking mechanism to rotate.
[0005] In an embodiment, the transmission assembly further comprises a first connecting component and a second connecting component, the first connecting component is connected with the power component, the second connecting component is connected with the locking mechanism, and the buffer component is transmissionally connected between the first connecting component and the second connecting component.
[0006] In an embodiment, the first connecting component has a first connecting end and a first transmission end, the power component has a driving shaft, the first connecting end is fixedly connected with the driving shaft, the first transmission end is provided with a buffer component slot, and the buffer component is arranged in the buffer component slot.
[0007] In an embodiment, the second connecting component has a second connecting end and a second transmission end, the second connecting end is fixedly connected with the locking device, the second transmission end is provided with a limiting block, one end of the buffer component close to the second connecting component is provided with a connecting component slot matched with the limiting block, and the limiting block is inserted into the connecting component slot.
[0008] In one embodiment, the first connecting end is provided with a first clamping part and a second clamping part along an axial direction perpendicular to the drive shaft. The first clamping part and the second clamping part can be brought close to each other by fasteners to clamp the drive shaft. A first fixing hole for accommodating the drive shaft is formed between the first clamping part and the second clamping part. The first clamping part and the second clamping part clamp the drive shaft in the first fixing hole by the fasteners.
[0009] In one embodiment, a third clamping portion and a fourth clamping portion are arranged opposite each other along an axial direction perpendicular to the locking mechanism at the second connecting end. The third clamping portion and the fourth clamping portion are brought close to each other by fasteners to clamp the locking mechanism. A second fixing hole is formed between the third clamping portion and the fourth clamping portion for the locking mechanism to be inserted. The third clamping portion and the fourth clamping portion clamp the end of the locking mechanism near the power member in the second fixing hole by the fasteners.
[0010] In one embodiment, a limiting groove is formed at one end of the buffer member near the first connector, and the end of the drive shaft near the transmission assembly is inserted into the limiting groove. The limiting groove is used to limit the position of the transmission assembly relative to the drive shaft along the axial direction; and / or, the buffer member is made of a flexible material.
[0011] In one embodiment, the fastening device further includes a sensing mechanism for signal connection with the control system; the sensing mechanism is mounted on the housing, the fastening mechanism is slidably disposed on the housing along the axial direction, the fastening mechanism has a stop that can move with the fastening mechanism, and the sensing mechanism senses the degree of fastening of the fastener on the workpiece by sensing the position of the stop relative to the housing.
[0012] In one embodiment, the sensing mechanism includes a first sensing component and a second sensing component, wherein the sensing point of the first sensing component is at a higher position than the sensing point of the second sensing component; the first sensing component is used to sense the fastening depth of the fastener, and the second sensing component is used to sense whether the fastener is fastened to a preset position.
[0013] This utility model also proposes a locking device, including a control system and the locking device described in any of the above, wherein the control system is electrically connected to the locking device to control the locking device to work in a preset manner.
[0014] The technical solution of this utility model involves incorporating a power component and a locking mechanism within a locking device, connected by a transmission assembly. The power component provides power output when the locking device locks the fastener, while the locking mechanism, driven by the power component, locks the fastener to a preset position. The transmission assembly transmits the driving force provided by the power component to the locking mechanism, enabling the power component to rotate the transmission device and thus drive the locking mechanism to rotate, thereby locking the fastener to the preset position. A buffer component is incorporated into the transmission assembly to buffer the rotational inertia generated by the power component when driving the locking mechanism, thereby buffering the rotational inertia of the locking mechanism on the fastener when locking it. This reduces the impact on the fastener when the locking mechanism rotates, preventing the impact force from breaking the fastener and thus reducing the likelihood of broken rods. Attached Figure Description
[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.
[0016] Figure 1 A schematic diagram of an embodiment of the locking device provided by this utility model;
[0017] Figure 2 A cross-sectional view of an embodiment of the locking device provided by this utility model;
[0018] Figure 3 Exploded view of an embodiment of the locking device provided by this utility model;
[0019] Figure 4 A schematic diagram of the transmission component in one embodiment of the locking device provided by this utility model;
[0020] Figure 5 An exploded view of the transmission component in one embodiment of the locking device provided by this utility model;
[0021] Figure 6 This is a structural diagram showing the positional relationship between the vacuum port and the housing in the prior art;
[0022] Figure 7 for Figure 2 Enlarged view of point A in the middle.
[0023] Explanation of icon numbers:
[0024] 100. Locking device; 1. Housing; 11. First part; 12. Second part; 13. Elastic element; 14. Vacuum suction port; 15. Vacuum port; 16. Sealing ring; 2. Power element; 21. Drive shaft; 3. Locking mechanism; 31. Output shaft; 32. Stop block; 4. Transmission assembly; 41. First connecting member; 411. First connecting end; 4111. First clamping part; 4112. Second clamping part; 412. First transmission end; 413. Buffer groove; 42. Second connecting member; 421. Second connecting end; 4211. Third clamping part; 4212. Fourth clamping part; 422. Second transmission end; 423. Limiting block; 43. Buffer; 431. Connecting member groove; 432. Limiting groove; 5. Sensing mechanism; 51. First sensing assembly; 52. Second sensing assembly.
[0025] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation
[0026] 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 scope of protection of the present utility model.
[0027] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.
[0028] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.
[0029] Automated fastener fastening equipment is a device that autonomously completes the feeding and fastening processes of fasteners using an automated system. The equipment can automatically pick up fasteners, transport them to a designated location, and then tighten them using a pneumatic or electric screwdriver, repeating this cycle without manual operation. In existing technologies, automated fastening devices typically apply continuous force to the fasteners throughout the fastening process to ensure they are properly tightened. Therefore, even after the fastener is fully fastened and can no longer rotate, the fastening device continues to apply external force. Since the transmission mechanism in the fastening device is usually made entirely of metal, and the power component is typically rigidly connected to the fastening mechanism, the rotational inertia generated by the continued force applied after the fastener has stopped rotating can easily cause the fastener to break, resulting in fastener breakage and affecting the fastening quality. The greater the power of the power component in the locking device, the faster the rotation speed, and the greater the moment of inertia generated. Therefore, in the prior art, in order to ensure the locking quality and reduce the phenomenon of broken rods, the power of the power component usually cannot be set too high. The locking efficiency of the locking device is limited by the power of the power component, which also leads to the fact that the locking efficiency of the automated locking device in the prior art is not high and the locking quality is difficult to guarantee.
[0030] This utility model proposes a locking device 100.
[0031] Please see Figures 1-5 In one embodiment of this utility model, the locking device 100 includes: a housing 1, a power component 2, a locking mechanism 3, and a transmission mechanism; the power component 2 is installed on the housing 1; the locking mechanism 3 is installed on the housing 1, and the locking mechanism 3 has a rotatable output shaft 31, which is used to lock the fastener in a preset position; the transmission assembly 4 drives the power component 2 and the locking mechanism 3, and the transmission assembly 4 includes a buffer component 43, which is used to buffer the rotational inertia generated when the power component 2 drives the locking mechanism 3 to rotate.
[0032] In this embodiment, the housing 1 serves as a support and protection structure for the locking device 100, supporting the installation of the power component 2 and the locking mechanism 3, and protecting the small components located inside the housing 1 to ensure the normal operation of the locking device 100. The power component 2 provides power to the device when the locking device 100 locks the fastener, enabling the locking mechanism 3 to obtain rotational power and thus screw the fastener into a preset threaded hole. The locking mechanism 3 applies rotational force to the fastener under the drive of the power component 2. The output shaft 31 of the locking mechanism 3 has a screwdriver of a preset shape at its end to match the nut of the fastener to be locked. By inserting the screwdriver into a groove on the top of the nut that matches its shape, rotation is driven, and the fastener is screwed into the threaded hole to reach a preset position. The transmission mechanism connects the power component 2 and the locking mechanism 3. The transmission mechanism can rotate under the drive of the power component 2. The transmission mechanism connects to the locking mechanism 3, thereby causing the locking mechanism 3 to rotate with the transmission mechanism, achieving fastener locking. In traditional locking devices, the transmission mechanism is usually made of all-metal materials to ensure structural stability. Therefore, the power component and the transmission mechanism are rigidly connected. However, in this application, the transmission mechanism also includes a buffer 43. The buffer 43 has a certain elasticity to buffer the rotational inertia. The buffer 43 can realize the flexible connection between the power component 2 and the locking mechanism 3. After the fastener is locked in place and no longer rotates, the buffer 43 can buffer the rotational inertia generated by the locking device 100 continuing to apply rotational force to the fastener, thereby reducing the external force on the fastener, preventing the fastener from being twisted off, reducing the phenomenon of broken rods, and improving the locking quality.
[0033] In this embodiment, the power component 2 is installed at one end of the housing 1. The housing 1 has a hollow cavity extending vertically. The locking mechanism 3 is installed within the hollow cavity. The locking mechanism 3 has an output shaft 31 at the end away from the power component 2, and the end of the output shaft 31 away from the power component 2 is a screwdriver. The housing 1 is divided into a first part 11 and a second part 12, which are sleeve structures. The second part 12 is telescopically located at the end of the first part 11 away from the power component 2. Through the telescopic movement of the second part 12, the screwdriver can be extended from the end of the hollow cavity away from the power component 2 as needed to fasten the fastener. The end of the second part 12 away from the power component 2 has a vacuum suction port 14. This vacuum suction port 14 is used to absorb the fastener using air pressure. The diameter of the vacuum suction port 14 is slightly larger than the diameter of the screwdriver but smaller than the diameter of the fastener nut.
[0034] Furthermore, a vacuum adsorption chamber is formed at the end of the second part 12 of the housing 1 furthest from the power component 2. A vacuum adsorption port 14 is located at the end of the vacuum adsorption chamber furthest from the power component 2. A vacuum port 15 is formed on the side wall of the second part 12, which is connected to the vacuum chamber. The vacuum port 15 is used for connecting a pipe to an external vacuum device. The vacuum device creates a negative pressure condition by inserting the pipe into the vacuum port 15 and extracting air from the vacuum adsorption chamber, so that the vacuum adsorption chamber can adsorb the screw under the negative pressure. During the screw fastening process, the fastening device 100 releases the vacuum autonomously and continuously applies downward pressure to the screw to rotate and push it into the workpiece. During this process, the first part 11 of the housing 1 moves downward, while the second part 12 cannot move downward under the action of the workpiece and the screw, and thus retracts upward relative to the first part 11 into the cavity of the first part 11. The second part 12 is provided with an elastic element 13 at the end away from the vacuum adsorption port 14. The second part 12 abuts against the first part 11 through the elastic element 13. The elastic element 13 is used to push the second part 12 away from the power element 2, so that the vacuum adsorption port 14 is exposed in the first part 11 when the screw is not needed, so that the vacuum adsorption port 14 can be aligned with the screw for adsorption.
[0035] Understandably, referring to Figure 6 In the prior art, the vacuum adsorption chamber of the second part 12' is connected to the cavity of the first part 11'. While the vacuum port 15' draws away the air in the vacuum adsorption chamber to create a negative pressure environment, it also draws away the air in the cavity of the first part 11'. That is, the air drawn away by the vacuum adsorption port 14' is actually the air of the entire shell 1'. At this time, the cavity of the entire shell 1' is in a negative pressure state. In the absence of the elastic element 13' or insufficient elastic ejection force, the second part 12' will shrink relative to the first part 11' under the action of negative pressure. In order to prevent the vacuum adsorption port 14' from shrinking into the first part 11' and not being able to be exposed, the elastic force of the elastic element 13' needs to be able to resist the pressure of the negative pressure in the cavity at this time so that the vacuum adsorption port 14' can be ejected. Usually, an elastic element 13' with a large elastic force is required to abut between the first part 11' and the second part 12'. When the screw is fastened to the workpiece, the vacuum environment is no longer required, and the vacuum adsorption will be disconnected, so that the cavity is under normal pressure conditions. At this time, the elastic element 13' still acts on the second part 12', and thus acts on the screw that is against the second part 12'. Since the pressure of the elastic element 13' is large, this force will be fully applied to the screw at the moment the negative pressure is disconnected, which can easily destroy the original stress state of the screw and increase the risk of fastening failure.
[0036] Reference Figure 7In this embodiment, a sealing ring 16 is provided in the vacuum adsorption chamber of the second part 12. The sealing ring 16 is located in the middle of the vacuum adsorption chamber, dividing the vacuum adsorber into a first chamber and a second chamber. The first chamber is located at the end of the vacuum adsorption chamber closer to the power component 2 and is connected to the cavity of the first part 11. The vacuum adsorption port 14 is located at the end of the second chamber away from the first chamber and is used to adsorb screws. The vacuum port 15 is opened on the side wall of the second chamber. At this time, when the vacuum port 15 draws air, only the air in the second chamber is drawn due to the interval of the sealing ring 16. At this time, no negative pressure is formed in the cavity of the first part 11 and the first chamber. The elastic element 13 does not need to resist a large negative pressure. It only needs to play the role of pushing the second part 12 outward. Therefore, only the elastic element 13 with a small pressure is needed to connect the first part 11 and the second part 12. Thus, when the vacuum pressure is broken during the fastening process, the elastic element 13 will not apply a large pressure to the screw instantly. The force balance during screw fastening is easier to control, which can further improve the quality and yield of screw fastening.
[0037] When fastening fasteners, the fastener is first adsorbed onto the vacuum suction port, then moved above the preset threaded hole. The screwdriver is rotated by the power component 2, while the entire fastening device 100 moves downwards. Because the vacuum suction port is smaller than the fastener nut, the second housing 1 moves relative to the first housing 1 towards the power component 2 under the action of the nut. This causes the screwdriver to extend from the vacuum suction port and align with the corresponding groove above the fastener nut, thus pressing the fastener into the threaded hole while rotating, thereby fastening the fastener to the preset position. In the prior art, the power component 2 is typically driven by a motor with a power of only about 100W, achieving a fastening efficiency of up to 1.3s / s. This application, by incorporating a buffer component 43 in the transmission mechanism, allows for the use of a higher-power motor, achieving a fastening efficiency of 0.8s / s. Furthermore, because the buffer component 43 can buffer the rotational inertia of the high-power motor, even if the power component 2 rotates at a higher speed, it will not cause serious breakage, thereby improving the efficiency and quality of screw fastening.
[0038] The technical solution of this utility model involves setting a power component 2 and a locking mechanism 3 in the locking device 100, and connecting the power component 2 and the locking mechanism 3 through a transmission assembly 4. The power component 2 provides power output when the locking device 100 locks the fastener, and the locking mechanism 3 locks the fastener to a preset position under the drive of the power component 2. The transmission assembly transmits the driving force provided by the power component 2 to the locking mechanism 3, so that the power component 2 can drive the locking mechanism 3 to rotate through the drive transmission device, thereby locking the fastener to the preset position. By setting a buffer component 43 in the transmission assembly 4, the buffer component 43 buffers the rotational inertia generated by the power component 2 when driving the locking mechanism 3 to rotate, thereby buffering the rotational inertia of the locking mechanism 3 on the fastener after the fastener is locked in place, thus reducing the impact on the fastener when the locking mechanism 3 rotates the fastener, avoiding the impact force from breaking the fastener, and thus reducing the phenomenon of rod breakage.
[0039] See Figure 3 , 4 In one embodiment, the transmission assembly 4 further includes a first connecting member 41 and a second connecting member 42. The first connecting member 41 is connected to the power member 2, and the second connecting member 42 is connected to the locking mechanism 3. A buffer member 43 is drivenly connected between the first connecting member 41 and the second connecting member 42. The first connecting member 41 and the power member 2 are fixedly connected, so that the power member 2 can drive the first connecting member 41 to rotate. The first connecting member 41 is drivenly connected to the buffer member 43, so that the buffer member 43 can rotate with the first connecting member 41. The second connecting member 42 is drivenly connected to the buffer member 43, so that it rotates under the drive of the buffer member 43. The second buffer member 43 is fixedly connected to the locking mechanism 3, thereby driving the locking mechanism 3 to rotate, and finally driving the output shaft 31 on the locking mechanism 3 to rotate so that the fastener is locked in a preset position.
[0040] In one embodiment, the first connecting member 41 has a first connecting end 411 and a first transmission end 412, and the power member 2 has a drive shaft 21. The first connecting end 411 is fixedly connected to the drive shaft 21, and the first transmission end 412 has a buffer groove 413, in which a buffer member 43 is disposed. The first connecting end 411 is used to fixally connect to the drive shaft 21 so that the first connecting member 41 rotates under the drive of the drive shaft 21. The first transmission end 412 passes through the buffer groove 413 and inserts the buffer member 43 into the buffer groove 413 to achieve a transmission connection. In this embodiment, the buffer groove 413 is rectangular, and the outer contour of the buffer member 43 is slightly smaller than that of the buffer groove 413, so that the buffer member 43 can be inserted into the buffer groove 413 without loosening. In other embodiments, the inner contour shape of the buffer groove 413 and the outer contour shape of the buffer member 43 can also be set to other shapes, as long as they can be transmitted through mutual matching shapes.
[0041] In one embodiment, the second connecting member 42 has a second connecting end 421 and a second transmission end 422. The second connecting end 421 is fixedly connected to the locking device 100. The second transmission end 422 is provided with a limiting block 423. The end of the buffer member 43 near the second connecting member 42 is opened in the connecting member groove 431 that mates with the limiting block 423. The limiting block 423 is inserted into the connecting member groove 431. The second connecting end 421 is fixedly connected to the end of the locking mechanism 3 near the power member 2, so that the locking mechanism 3 can rotate synchronously with the second connecting member 42. The end of the buffer member 43 near the second connecting member 42 is opened in the connecting member groove 431. The second transmission end 422 is provided with a limiting block 423 that matches the shape and size of the inner contour of the connecting member groove 431, so that the limiting block 423 can be inserted into the connecting member groove 431 and will not loosen, thereby driving the locking device 100 to rotate. By clamping the buffer 43 between the first connector 41 and the second connector 42, the locking mechanism 3 can buffer the rotational inertia caused by the rotation of the drive shaft 21 of the power component 2, thereby reducing the possibility of rod breakage.
[0042] See Figures 3-5 In one embodiment, the first connecting end 411 is provided with a first clamping part 4111 and a second clamping part 4112 opposite each other along an axial direction perpendicular to the drive shaft 21. The first clamping part 4111 and the second clamping part 4112 can be brought close to each other by fasteners to clamp the drive shaft 21. A first fixing hole for accommodating the drive shaft 21 is formed between the first clamping part 4111 and the second clamping part 4112. The first clamping part 4111 and the second clamping part 4112 clamp the drive shaft 21 in the first fixing hole by fasteners. The drive shaft 21 is clamped between the first clamping part 4111 and the second clamping part 4112. The first clamping part 4111 and the second clamping part 4112 are brought closer together by fasteners. The pressure applied by the first clamping part 4111 and the second clamping part 4112 to the outer wall of the drive shaft 21 clamps the drive shaft 21 in the first fixing hole. The first fixing hole is used to limit the position of the drive shaft 21 relative to the first connecting end 411 in the horizontal direction. The friction between the inner wall of the first fixing hole and the outer wall of the drive shaft 21 limits the position of the drive shaft 21 relative to the first connecting end 411 in the vertical direction.
[0043] In one embodiment, the second connecting end 421 has a third clamping part 4211 and a fourth clamping part 4212 arranged opposite to each other along the axial direction perpendicular to the locking mechanism 3. The third clamping part 4211 and the fourth clamping part 4212 are brought close to each other by fasteners to clamp the locking mechanism 3. A second fixing hole for the locking mechanism 3 to be inserted is opened between the third clamping part 4211 and the fourth clamping part 4212. The third clamping part 4211 and the fourth clamping part 4212 clamp the end of the locking mechanism 3 near the power member 2 in the second fixing hole by fasteners. The end of the locking mechanism 3 near the power member 2 is configured as a cylindrical shaft. The end of the locking mechanism 3 near the power member 2 is clamped between the third clamping part 4211 and the fourth clamping part 4212. The third clamping part 4211 and the fourth clamping part 4212 are continuously brought closer by fasteners. The pressure applied by the third clamping part 4211 and the fourth clamping part 4212 to the outer wall of the locking mechanism 3 clamps the locking mechanism 3 in the second fixing hole. The second fixing hole is used to limit the position of the locking device 100 relative to the second connecting end 421 in the horizontal direction. The friction between the inner wall of the second fixing hole and the outer wall of the locking device 100 limits the position of the locking device 100 relative to the second connecting end 421 in the vertical direction.
[0044] In one embodiment, a limiting groove 432 is formed at one end of the buffer member 43 near the first connecting member 41, and the end of the drive shaft 21 near the transmission assembly 4 is inserted into the limiting groove 432. The limiting groove 432 is used to limit the position of the transmission assembly 4 relative to the drive shaft 21 along the axial direction; and / or, the buffer member 43 is made of a flexible material. The shape of the limiting groove 432 is adapted to the outer contour of the drive shaft 21 so that the drive shaft 21 can be inserted into the limiting groove 432 for limitation. The bottom of the limiting groove 432 can abut against the end of the drive shaft 21 to prevent the transmission mechanism from moving towards the power member 2 along the axial direction of the drive shaft 21 during rotation, causing the drive shaft 21 to go too deep, thus avoiding affecting the movement of the locking device 100. The buffer member 43 is made of a flexible material such as polyurethane. The flexible material has a certain degree of softness and elasticity, which can buffer the rotational inertia brought by the power member 2 and reduce the occurrence of broken rods.
[0045] In one embodiment, the fastening device 100 further includes a sensing mechanism 5, which is used to connect to the control system signal. The sensing mechanism 5 is installed on the housing 1, and the fastening mechanism 3 is slidably disposed on the housing 1 along the axial direction. The fastening mechanism 3 has a stop 32 that can move with the fastening mechanism 3. The sensing mechanism 5 senses the degree of fastening of the fastener on the workpiece by sensing the position of the stop 32 relative to the housing 1. In conventional fastening devices 100, a time sensor is usually used to determine the degree of fastening of the fastener by sensing the rotation time of the fastening device 100. This can easily lead to the fastener being fastened prematurely, but because the preset sensing time has not been reached, the power component 2 does not decelerate and continues to apply force, resulting in the fastener breaking. It can also easily lead to the fastener not being fastened properly, but the preset sensing time has been reached, and the power component 2 decelerates prematurely, resulting in the fastener not being fastened properly. In this embodiment, the sensing mechanism 5 determines the degree of fastening by sensing the height position of the fastener; the fastening device 100 is provided with an elastic buffer 43 such as a spring along the axial direction to buffer the force received by the fastening mechanism 3 in the axial direction, so as to avoid damaging the workpiece during the fastening process of the fastening device 100 pressing down; therefore, when the fastening mechanism 3 fastens the fastener, it will be pushed towards the power member 2 under the relative force of the fastener. The fastening mechanism 3 is provided with a stop 32, which can move along the axial direction with the fastening mechanism 3. The sensing device obtains the fastening depth by sensing the position of the stop 32 in the axial direction, thereby obtaining the degree of fastening.
[0046] See Figure 1 , 2In one embodiment, the sensing mechanism 5 includes a first sensing component 51 and a second sensing component 52. The sensing point of the first sensing component 51 is at a higher position than the sensing point of the second sensing component 52. The first sensing component 51 is used to sense the fastening depth of the fastener, and the second sensing component 52 is used to sense whether the fastener is fastened to a preset position. In this embodiment, the first sensing component 51 is a pair of photoelectric switches arranged opposite each other. The housing 1 has a light-transmitting hole for light transmission. As the stop block 32 moves with the degree of fastening, it will block the light from the fastening switch. The photoelectric switch obtains the fastening depth of the fastener by the degree or time of light blocking. When the fastener is 3mm away from the preset position of final fastening, the information is transmitted to the control system through an electrical signal. The control system then starts to control the rotation speed of the power component 2 through an electrical signal, so that it gradually decelerates until fastening is completed, avoiding the breakage of the rod. The second sensing component 52 consists of a pair of photoelectric switches arranged opposite each other. The housing 1 has a light-transmitting hole for light transmission. Its horizontal height is below the first sensing component 51. During the upward movement of the stop block 32, it first blocks the light transmission between the second sensing components 52. Then, the stop block 32 continues to move upward. After the fastening is completed, the stop block 32 will move above the light source between the second sensing components 52. At this time, the photoelectric switches of the second sensing components 52 can resume light transmission. This allows the operator to know that the fastener has been properly fastened through the signal transmitted by the second sensing component 52, thus completing the fastening work. However, when the fastener is not properly fastened and a floating lock occurs, the moving height of the stop block 32 is insufficient. The stop block 32 still blocks the light from the photoelectric switches in the second sensing component 52, and the light cannot be transmitted between the photoelectric switches. This allows the operator to know that the fastener has not been properly fastened and a floating lock occurs through the signal transmitted by the second sensing component 52, and to make timely adjustments.
[0047] This utility model also proposes a fastening device, which includes a control system and a fastening device 100 as described above. The specific structure of the fastening device 100 is as described in the above embodiments. Since this fastening device adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here. The control system is electrically connected to the fastening device 100 to control the fastening device 100 to work in a preset manner. The control system can obtain the fastening degree and condition of the fastener according to the electrical signal emitted by the sensing mechanism 5, and can control the rotation speed of the power component 2 in the fastening device 100 and the position of the fastening device 100 according to the electrical signal, so that the fastening device 100 fastens the fastener on the workpiece in a preset manner.
[0048] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.
Claims
1. A locking device, characterized in that, include: case; The power component is installed in the housing; A locking mechanism is installed in the housing, the locking mechanism having a rotatable output shaft, the output shaft being used to lock the fastener in a preset position; A transmission assembly is provided, which drives the power component and the locking mechanism. The transmission assembly includes a buffer component, which is used to buffer the rotational inertia generated when the power component drives the locking mechanism to rotate.
2. The locking device as described in claim 1, characterized in that, The transmission assembly further includes a first connector and a second connector. The first connector is connected to the power component, the second connector is connected to the locking mechanism, and the buffer is driven between the first connector and the second connector.
3. The locking device as described in claim 2, characterized in that, The first connector has a first connecting end and a first transmission end, the power component has a drive shaft, the first connecting end is fixedly connected to the drive shaft, the first transmission end has a buffer groove, and the buffer is disposed in the buffer groove.
4. The locking device as described in claim 3, characterized in that, The first connecting end is provided with a first clamping part and a second clamping part along an axial direction perpendicular to the drive shaft. The first clamping part and the second clamping part can be brought close to each other by fasteners to clamp the drive shaft. A first fixing hole for accommodating the drive shaft is formed between the first clamping part and the second clamping part. The first clamping part and the second clamping part clamp the drive shaft in the first fixing hole by the fasteners.
5. The locking device as described in claim 3, characterized in that, The second connector has a second connecting end and a second transmission end. The second connecting end is fixedly connected to the locking device. The second transmission end is provided with a limiting block. The end of the buffer member near the second connector is opened in the connector groove that mates with the limiting block. The limiting block is inserted into the connector groove.
6. The locking device as described in claim 5, characterized in that, The second connecting end has a third clamping part and a fourth clamping part arranged opposite each other along the axial direction perpendicular to the locking mechanism. The third clamping part and the fourth clamping part are brought close to each other by fasteners to clamp the locking mechanism. A second fixing hole is opened between the third clamping part and the fourth clamping part for the locking mechanism to be inserted. The third clamping part and the fourth clamping part clamp the end of the locking mechanism near the power member in the second fixing hole by the fasteners.
7. The locking device as described in claim 5, characterized in that, The buffer member has a limiting groove at one end near the first connector, and the drive shaft is inserted into the limiting groove at one end near the transmission assembly. The limiting groove is used to limit the position of the transmission assembly relative to the drive shaft along the axial direction. And / or, the buffer is made of a flexible material.
8. The locking device as described in any one of claims 1 to 7, characterized in that, The fastening device further includes a sensing mechanism for signal connection with the control system; the sensing mechanism is mounted on the housing, and the fastening mechanism is slidably disposed on the housing along the axial direction. The fastening mechanism has a stop that can move with the fastening mechanism. The sensing mechanism senses the degree of fastening of the fastener on the workpiece by sensing the position of the stop relative to the housing.
9. The locking device as described in claim 8, characterized in that, The sensing mechanism includes a first sensing component and a second sensing component. The sensing point of the first sensing component is at a higher position than the sensing point of the second sensing component. The first sensing component is used to sense the fastening depth of the fastener, and the second sensing component is used to sense whether the fastener is fastened to a preset position.
10. A locking device, characterized in that, The system includes a control system and a locking device as described in any one of claims 1 to 9, wherein the control system is electrically connected to the locking device to control the locking device to operate in a preset manner.