A screw locking mechanism with controllable nozzle height

Abstract

The utility model relates to automatic screw locking equipment technical field, especially, relate to a kind of screw locking mechanism of suction nozzle height controllable, including base, moving seat, electric screwdriver and electric driver power source, moving seat slidingly has the L-shaped bit mounting plate that does not follow moving seat up and down sliding, L-shaped bit mounting plate is equipped with suction nozzle, L-shaped bit mounting plate upper end is equipped with push block;Base is equipped with push driving element, push driving element is equipped with and pushes the up and down adjusting block of push block contact and push push block block drive L-shaped bit mounting plate. The utility model drives up and down adjusting block by push driving element, makes up and down adjusting block push push block drive L-shaped bit mounting plate to move up, to move down by L-shaped bit mounting plate self gravity, further realize that suction nozzle different height is adjusted, to adapt to the product demand of different lock height, suction nozzle height is not needed manually adjusted, greatly improve production efficiency and degree of automation.

Description

Technical Field

[0001] This utility model relates to the field of automatic screw fastening equipment technology, and in particular to a screw fastening mechanism with controllable nozzle height. Background Technology

[0002] The traditional vacuum suction automatic screw fastening principle involves a vacuum nozzle drawing the pre-positioned screws from the feeder into the nozzle. Simultaneously, the electric screwdriver's bar engages with the screw during high-speed rotation, pushing the screw out of the nozzle and locking it into the product. This method typically only fastens screws on the same plane. It cannot automatically fasten screws at the same station for products with different fastening heights, requiring multiple stations. Furthermore, the nozzle height must be manually adjusted for different products. Utility Model Content

[0003] The purpose of this invention is to address the shortcomings of existing technologies by proposing a screw-locking mechanism with controllable nozzle height.

[0004] To achieve the above objectives, this utility model adopts the following technical solution: a screw-locking mechanism with controllable suction nozzle height, comprising: a base, a movable seat slidably mounted on the base, an electric screwdriver mounted on the movable seat, and an electric screwdriver power source that drives the movable seat to move the electric screwdriver up and down. An L-shaped bit mounting plate that does not slide up and down with the movable seat is slidably mounted on the movable seat. The L-shaped bit mounting plate has a suction nozzle coaxial with the drill bit of the electric screwdriver. A pushing block is provided at the upper end of the L-shaped bit mounting plate. The base has a pushing drive component, which has an adjusting block that contacts the pushing block and pushes the pushing block to move the L-shaped bit mounting plate up and down. The adjusting block has an elastic anti-collision post that contacts the pushing block. The pushing drive component drives the adjusting block, causing the adjusting block to push the pushing block to move the L-shaped bit mounting plate up and down, while the L-shaped bit mounting plate moves down by its own weight, thus achieving suction nozzle height adjustment.

[0005] Preferably, the driving component includes a guide slide rod, a transmission screw parallel to the guide slide rod, a driven synchronous pulley located at the top of the transmission screw, and a stepper motor located on the back of the base and having a main synchronous pulley. The main synchronous pulley and the driven synchronous pulley are connected and driven by a synchronous belt. The upper and lower adjusting blocks are slidably connected to the guide slide rod through linear bearings and threadedly connected to the transmission screw.

[0006] Preferably, the driving component further includes support seats located at the upper and lower ends of the base, the two ends of the transmission screw are rotatably connected to the two support seats through bearings, and the two ends of the guide slide rod are respectively fixed to the two support seats, with the upper support seat having a buffer limiting post.

[0007] Preferably, an inverted L-shaped push plate is provided on the side of the push block, which can contact the elastic anti-collision post.

[0008] Preferably, the base is also provided with a fixed slider, the fixed slider is provided with a vertical block that is perpendicular to the slider fixing block, the vertical block is provided with a connecting shaft that is connected to the movable seat, and the connecting shaft is sleeved with a buffer spring; the fixed slider is provided with a sensing plate, and a sensor that cooperates with the sensing plate is provided at the upper end of the base, and the sensor is electrically connected to the electric screwdriver power source.

[0009] Preferably, the electric screwdriver power source includes a motor, a transmission belt, and two pulleys. The transmission belt is one of a chain, belt, rack and pinion, or synchronous belt. One of the pulleys is a driving pulley and the other is a driven pulley. The motor drives the driving pulley, and the driving pulley drives the driven pulley to rotate through the transmission belt.

[0010] The beneficial effects of this utility model are: by pushing the driving component to drive the upper and lower adjustment blocks, the upper and lower adjustment blocks push the pushing block to move the L-shaped bit mounting plate up, and the L-shaped bit mounting plate moves down by its own weight, thereby realizing the adjustment of the suction nozzle at different heights to meet the product requirements of different locking heights. There is no need to manually adjust the suction nozzle height, which greatly improves production efficiency and automation. Attached Figure Description

[0011] Figure 1 This is a front view of the present invention;

[0012] Figure 2 This is a schematic diagram of the structure of this utility model from one perspective;

[0013] Figure 3 This is a structural schematic diagram from another perspective of the present invention. Detailed Implementation

[0014] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0015] like Figure 1 , Figure 2 and Figure 3As shown, this embodiment provides a screw-locking mechanism with controllable nozzle height. The screw-locking mechanism with controllable nozzle height includes a base 10, a vertical slide rail 11 on the base 10, a movable seat 12 slidably mounted on the vertical slide rail 11, an electric screwdriver 20 mounted on the movable seat 12, and an electric screwdriver power source 30 on the base 10 for driving the movable seat 12 to move up and down along the vertical slide rail 11. The electric screwdriver power source 30 includes a motor, a transmission belt, and two pulleys. The transmission belt is one of a chain, belt, rack and pinion belt, or synchronous belt. One of the pulleys is a driving pulley and the other is a driven pulley. The motor drives the driving pulley, which in turn drives the driven pulley to rotate via the transmission belt. The motor drives the transmission belt to move the movable seat 12 up and down along the vertical slide rail 11, so that the electric screwdriver 20 can tighten screws on the product.

[0016] To prevent excessive movement of the movable seat 12 and reduce the risk of collision during the descent of the electric screwdriver 20, a fixed slider 13 is slidably mounted on the upper end of the vertical slide rail 11. The transmission belt is fixedly connected to the fixed slider 13. The fixed slider 13 has a vertical block 14 perpendicular to the slider fixing block. A connecting shaft 15 connected to the movable seat 12 is slidably mounted on the vertical block 14, and a buffer spring is sleeved on the connecting shaft 15. The fixed slider 13 has a sensing plate, and a sensor that cooperates with the sensing plate is located on the upper end of the base 10. The sensor is electrically connected to the motor. By sensing the sensing plate, when the movable seat 12 moves to the preset position, the sensor sends a signal to the motor, and the motor stops working, thereby preventing excessive movement of the movable seat 12. At the same time, the buffer spring can buffer the electric screwdriver 20 during descent, reducing the risk of collision during descent and improving the stability and service life of the equipment.

[0017] Furthermore, to meet the needs of different products, reduce manual intervention in adjusting the position of the suction nozzle 17, and improve the automation of the device, an automatic height adjustment structure for the suction nozzle 17 is provided on the base 10. This structure includes an L-shaped bit mounting plate 16 that slides on the movable base 12 and does not slide up and down with the movable base 12. A guide rail that slides with the L-shaped bit mounting plate 16 is installed on the end face of the movable base 12. The L-shaped bit mounting plate 16 has a suction nozzle 17 that is coaxial with the drill bit of the electric screwdriver 20. When the screwdriver 20 moves downward, the screwdriver bit passes through the suction nozzle 17 and presses the screw on the suction nozzle 17 onto the product for tightening. A push block 18 is provided at the upper end of the L-shaped bit mounting plate 16, and an inverted L-shaped push plate 180 is provided on the side of the push block 18. In order to push the push block 18 to move the L-shaped bit mounting plate 16 to adjust its position, a push drive component 19 is provided on the base 10. The push drive component 19 is provided with an up-and-down adjustment block 193 that contacts the inverted L-shaped push plate 180 and pushes the push block to move the L-shaped bit mounting plate 16.

[0018] In this embodiment, the driving component 19 includes support seats 190 located at the upper and lower ends of the base 10 and upper and lower adjustment blocks 193. A transmission screw 191 is rotatably connected to one side of the two support seats 190 via bearings. A mounting hole is provided on one side of the bearing, and a guide slide rod 192 is installed on the mounting hole of the two support seats 190. A linear bearing that slides with the guide slide rod 192 is installed on the upper and lower adjustment block 193, so that the upper and lower adjustment block 193 can move up and down along the guide slide rod 192. A square nut is fixed on one side of the upper and lower adjustment block 193, and the square nut is threadedly connected to the transmission screw 191.

[0019] Furthermore, a driven synchronous pulley is provided at the top of the transmission screw 191, and a stepper motor 194 with a main synchronous pulley is provided on the back of the base 10. The main synchronous pulley and the driven synchronous pulley are connected by a synchronous belt. The stepper motor 194 drives the synchronous belt through the main synchronous pulley, and the synchronous belt in turn drives the driven synchronous pulley and the transmission screw 191 to rotate. Since the square nut is threadedly connected to the transmission screw 191, when the transmission screw 191 rotates, the square nut and the upper and lower adjusting block 193 fixed thereto will move up and down along the guide slide 192. This design not only achieves precise control of the height of the L-shaped bit mounting plate 16 and the suction nozzle 17, but also ensures the smoothness and reliability of the adjustment process. At the same time, the setting of the guide slide 192 further enhances the stability of the movement of the upper and lower adjusting block 193, avoiding positional deviation caused by transmission errors or external interference.

[0020] In an optional embodiment, the upper support 190 is provided with a buffer limiting post 195. When the inverted L-shaped push plate 180 is pushed upward to the set maximum limit height, the buffer limiting post 195 contacts the upper surface of the inverted L-shaped push plate 180. In addition, a sensing plate is also provided on the side of the upper and lower adjustment block 193, and a sensor that senses the sensing plate is provided on the base 10, and the sensor is electrically connected to the stepper motor 194. In order to reduce the impact force when the upper and lower adjustment block 193 contacts the inverted L-shaped push plate 180, the upper and lower adjustment block 193 is provided with an elastic anti-collision post that contacts the inverted L-shaped push plate 180.

[0021] When the inverted L-shaped push plate 180 reaches the preset highest position, the buffer limit post 195 effectively prevents it from rising further, preventing damage caused by excessive movement or the position exceeding expectations. This design not only protects the mechanism but also ensures the accuracy of the nozzle 17 height. The combination of the sensing plate and sensor monitors the position of the up-and-down adjustment block 193. Once the sensing plate is detected by the sensor, it indicates that the up-and-down adjustment block 193 has moved to the preset position. At this time, the sensor sends a signal to the stepper motor 194, and the stepper motor 194 immediately stops working. This instant feedback mechanism greatly improves the automation level and response speed of the system. The setting of the elastic anti-collision post further reduces the impact force when the up-and-down adjustment block 193 contacts the inverted L-shaped push plate 180, ensuring the stable operation and long service life of the mechanism. Through these designs, the screw-locking mechanism not only achieves precise control of the nozzle 17 height but also takes into account operational safety and equipment durability.

[0022] In summary, the screw-locking mechanism with controllable nozzle height provided in this embodiment, by combining an electric screwdriver 20, an electric screwdriver power source 30, an automatically adjustable nozzle height structure, and a series of precision transmission and sensing components, achieves precise control of the nozzle height 17 during the screw-locking process, improving screw-locking efficiency and accuracy, and significantly reducing the difficulty and error of manual operation. At the same time, this mechanism emphasizes stability and durability design; through the inclusion of components such as buffer springs and elastic anti-collision posts, it effectively protects the mechanism from damage and extends its service life.

[0023] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

Claims

1. A screw-locking mechanism with controllable nozzle height, comprising: The invention comprises a base, a movable seat slidably mounted on the base, an electric screwdriver mounted on the movable seat, and an electric screwdriver power source for driving the movable seat to move the electric screwdriver up and down. The movable seat is characterized by having an L-shaped bit mounting plate that does not slide up and down with the movable seat. The L-shaped bit mounting plate has a suction nozzle coaxial with the drill bit of the electric screwdriver, and a pushing block at the upper end of the L-shaped bit mounting plate. The base has a pushing drive component, which has an adjusting block that contacts the pushing block and pushes the pushing block to move the L-shaped bit mounting plate up and down. The adjusting block has an elastic anti-collision post that contacts the pushing block. The pushing drive component drives the adjusting block, causing the adjusting block to push the pushing block to move the L-shaped bit mounting plate up and down, while the L-shaped bit mounting plate moves down by its own weight, thus adjusting the height of the suction nozzle.

2. The screw-locking mechanism with controllable nozzle height according to claim 1, characterized in that, The driving component includes a guide slide rod, a transmission screw parallel to the guide slide rod, a driven synchronous pulley located at the top of the transmission screw, and a stepper motor located on the back of the base and having a main synchronous pulley. The main synchronous pulley and the driven synchronous pulley are connected by a synchronous belt for transmission. The upper and lower adjusting blocks are slidably connected to the guide slide rod through linear bearings and are threadedly connected to the transmission screw.

3. The screw-locking mechanism with controllable nozzle height according to claim 2, characterized in that, The drive unit also includes support seats located at the upper and lower ends of the base. The two ends of the transmission screw are rotatably connected to the two support seats through bearings, and the two ends of the guide slide rod are respectively fixed to the two support seats. The upper support seat is provided with a buffer limit post.

4. The screw-locking mechanism with controllable nozzle height according to claim 2, characterized in that, The push block is equipped with an inverted L-shaped push plate on its side, which can contact the elastic anti-collision post.

5. The screw-locking mechanism with controllable nozzle height according to claim 1, characterized in that, The base is also equipped with a fixed slider, which has a vertical block perpendicular to the slider fixing block. The vertical block is equipped with a connecting shaft connected to the movable seat, and the connecting shaft is fitted with a buffer spring. The fixed slider is equipped with a sensing plate, and a sensor that cooperates with the sensing plate is provided at the upper end of the base. The sensor is electrically connected to the electric screwdriver power source.

6. The screw-locking mechanism with controllable nozzle height according to claim 1, characterized in that, The power source of an electric screwdriver includes a motor, a transmission belt, and two pulleys. The transmission belt can be a chain, belt, rack and pinion, or synchronous belt. One of the pulleys is a driving pulley and the other is a driven pulley. The motor drives the driving pulley, and the driving pulley drives the driven pulley to rotate through the transmission belt.

Images