Double-shaft servo tightening module

Abstract

The utility model relates to a double-shaft servo tightening module which comprises two servo tightening modules which are connected to the same mounting back plate side by side. The transplanting assembly comprises a mounting bottom plate which is connected with the two servo tightening modules at the same time, at least two nail feeding holes for the servo tightening modules to stretch out and draw back are formed in the mounting bottom plate, and a material receiving cup which reciprocates in the two nail feeding holes is further arranged on the transplanting assembly; and the screw blowing pipe penetrates through the mounting bottom plate and controllably conveys screws into the material receiving cup. According to the utility model, the structure is compact and reasonable, the operation is convenient, the working efficiency is obviously improved, the universality and expandability of the module are enhanced, and the precision and reliability of the tightening operation are improved through the innovative designs of double-shaft design, flexibility and adaptability enhancement, automation degree and intelligent level improvement and the like.

Description

Technical Field

[0001] This utility model relates to the field of tightening device technology, and in particular to a dual-axis servo tightening module. Background Technology

[0002] While single-axis servo tightening technology is widely used in the current field of automated assembly, it still has many limitations, particularly in terms of efficiency and flexibility. Specifically, existing single-axis servo tightening equipment requires screw picking before each tightening operation. This process is not only time-consuming but also occupies a significant portion of the entire tightening cycle. Due to the limitations of the single-axis design, the equipment must wait for the next screw picking operation to complete after completing one tightening operation before proceeding with the next, leading to low work efficiency.

[0003] Furthermore, single-axis servo tightening equipment falls short when handling complex assembly scenarios. For example, in situations requiring the continuous tightening of multiple screws, single-axis equipment cannot simultaneously handle the pickup and tightening of two or more screws, further limiting its efficiency and applicability. Simultaneously, single-axis equipment also exhibits relatively poor flexibility, struggling to adapt to tightening requirements at different heights and positions, which to some extent affects the accuracy and reliability of assembly. Therefore, improving the efficiency of servo tightening equipment to enable more efficient continuous tightening operations, while simultaneously enhancing its flexibility and adaptability, has become a pressing technical challenge.

[0004] To address this, we propose a dual-axis servo tightening module. Utility Model Content

[0005] To address the shortcomings of existing production technologies, the applicant provides a dual-axis servo tightening module. Through innovative designs such as dual-axis design, enhanced flexibility and adaptability, and improved automation and intelligence, the module significantly improves work efficiency, enhances its versatility and expandability, and improves the accuracy and reliability of tightening operations.

[0006] The technical solution adopted in this utility model is as follows:

[0007] A dual-axis servo tightening module includes:

[0008] The servo tightening module consists of two units connected side-by-side to the same mounting backplate. The servo tightening module includes a tightening tool capable of picking up nails and a Z-axis movement component capable of axial movement.

[0009] The transplanting assembly includes a mounting base plate that is simultaneously connected to two servo tightening modules, and at least two nail feeding holes for the extension and retraction of the servo tightening modules are provided on the mounting base plate. The transplanting assembly is also provided with a receiving cup that reciprocates in the two nail feeding holes.

[0010] The blow-nail tube runs through the mounting base plate and can controllably feed screws into the receiving cup.

[0011] In one embodiment, the transplanting assembly further includes a drive structure that drives the receiving cup to reciprocate.

[0012] In one embodiment, the driving structure includes:

[0013] A synchronous pulley assembly includes at least two synchronous pulleys and a synchronous belt wound around the synchronous pulleys, wherein one of the synchronous pulleys is provided with a transplanting servo motor for rotational drive.

[0014] The timing belt pressure plate is used to connect the receiving cup to the timing belt, so that the receiving cup can move along the timing belt direction;

[0015] The transfer linear guide is used for sliding the receiving cup and controlling the direction of movement of the receiving cup.

[0016] In one embodiment, the drive structure further includes one of a multi-stroke telescopic cylinder, an electric cylinder, or a crank connecting rod and a cam structure.

[0017] In one embodiment, the interface between the blowpipe and the mounting base plate is located at the midpoint of the cup travel.

[0018] In one embodiment, the tightening tool is provided with a screwdriver bit, and a nail suction tube is sleeved on the front end of the screwdriver bit. The side of the nail suction tube near the mounting base plate is connected to the nail feeding hole through a nail suction tube support shaft. A tool mounting base is also provided between the tightening tool and the screwdriver bit.

[0019] In one embodiment, the Z-axis moving assembly includes a Z-axis rolling screw, one end of which is rotatably connected to a mounting base plate, and the other end of which is connected to a Z-axis servo motor. A pin-collecting seat lower seat that moves relative to the axial direction is provided on the Z-axis rolling screw. The pin-collecting seat is slidably connected to a Z-axis linear guide rail provided on the mounting back plate, and a guide rail clamp for braking is also provided on the pin-collecting seat lower seat.

[0020] In one embodiment, the lower seat of the nail suction holder is further provided with an upper seat of the nail suction holder for docking with the nail suction tube, and a first vacuum tube for docking with the nail suction tube is provided on the upper seat of the nail suction holder.

[0021] In one embodiment, a material drop sensor is provided on the blowpipe.

[0022] In one embodiment, the receiving cup is further provided with a second vacuum tube, which is connected to a vacuum pressure switch for removing dust from the screw and judging the condition of the screw by the pressure change of the second vacuum tube.

[0023] The beneficial effects of this utility model are as follows:

[0024] This utility model features a compact and reasonable structure, and is easy to operate. Through innovative designs such as a dual-axis design, enhanced flexibility and adaptability, and improved automation and intelligence, it significantly improves work efficiency, enhances the module's versatility and expandability, and increases the precision and reliability of tightening operations. These beneficial effects make the dual-axis servo tightening module of this embodiment have broad application prospects and huge market potential in the field of automated assembly.

[0025] In addition, this utility model also has the following advantages:

[0026] This embodiment employs a dual-axis design, enabling two servo tightening modules to be connected side-by-side and operate alternately. While one module is performing tightening operations, the other module can simultaneously pick up screws, significantly reducing waiting time and improving overall work efficiency. This design allows the modules to complete tightening tasks continuously and efficiently, making it particularly suitable for automated assembly lines requiring a large number of tightening operations.

[0027] Specifically, the receiving cup reciprocates between the two screw feeding holes, enabling rapid screw switching and supply. Simultaneously, precise control of the Z-axis movement component ensures that the screws are accurately aligned with the threaded holes on the workpiece, further improving the efficiency and accuracy of the tightening operation.

[0028] The design of the transfer assembly and Z-axis movement assembly in this embodiment gives the entire module extremely high flexibility and adaptability. The transfer assembly can handle screws from different sources and adapt to more complex assembly scenarios. The Z-axis movement assembly is responsible for the precise vertical movement of the tightening tool, ensuring that the screws are accurately aligned with screw holes at different heights and positions.

[0029] This design allows the module to easily adapt to various workpiece shapes and sizes without the need for complex adjustments or component replacements, greatly improving the module's versatility and expandability.

[0030] Meanwhile, the module is also equipped with sensor devices such as a material dropping sensor and a vacuum pressure switch, enabling real-time monitoring and automated management of screw status.

[0031] The application of a servo control system makes the entire tightening process more intelligent and adaptive. The system can adjust tightening parameters in real time based on feedback information such as torque, downforce, and feed rate, ensuring the accuracy and consistency of tightening quality. This intelligent control not only improves the precision and reliability of tightening operations but also reduces the skill requirements for operators. Attached Figure Description

[0032] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0033] Figure 2 This is another perspective of the three-dimensional structure of this utility model (without the outer shell).

[0034] Figure 3 This is an enlarged structural schematic diagram of the transplanting component in this utility model.

[0035] Figure 4 This is the front view of the present invention.

[0036] in:

[0037] 100. Backplate installation; 200. Transplanting assembly; 300. Tightening tool; 400. Nail blowpipe; 500. Z-axis movement assembly;

[0038] 201. Transplanting servo motor; 202. Synchronous belt pulley; 203. Idler pulley; 2031. Adjusting screw; 204. Synchronous belt; 2041. Synchronous belt pressure plate; 205. Receiving cup; 2051. Nail feeding hole; 206. Transplanting linear guide;

[0039] 301. Screwdriver bit; 302. Nail suction tube; 3021. Nail suction tube support shaft; 303. Nail suction seat upper seat; 304. Tool mounting base;

[0040] 401. Material feeding sensor; 402. Vacuum pressure switch;

[0041] 501. Z-axis rolling screw; 502. Guide rail clamp; 503. Z-axis servo motor; 504. Z-axis linear guide. Detailed Implementation

[0042] The specific embodiments of this utility model are described below with reference to the accompanying drawings.

[0043] like Figures 1-4 As shown, this embodiment discloses a dual-axis servo tightening module, which includes a servo tightening module, a transplanting assembly 200, and a blowpipe 400;

[0044] Two servo tightening modules are connected side-by-side on the same mounting backplate 100. Each module includes a tightening tool 300 capable of picking up screws and a Z-axis moving assembly 500 capable of axial movement. The servo tightening modules precisely control torque and angle to tighten screws. The two servo tightening modules connected side-by-side improve work efficiency, allowing for alternating tightening tasks. The tightening tool 300 is designed with a screw-picking function, meaning it can automatically pick up screws before tightening, reducing the need for manual screw placement and increasing automation. The Z-axis moving assembly 500 is responsible for the precise vertical movement of the tightening tool 300, ensuring the screw is accurately aligned with the threaded hole on the workpiece. This design makes the entire module more flexible, adaptable to tightening needs at different heights and positions.

[0045] The transfer assembly 200 includes a mounting base plate connected to both servo tightening modules. The mounting base plate has at least two screw feeding holes 2051 for the extension and retraction of the servo tightening modules. The transfer assembly also has a receiving cup 205 that reciprocates between the two screw feeding holes 2051. The transfer assembly is a key component of the module for screw supply and switching. The mounting base plate, as the supporting structure for the entire transfer assembly, not only connects the two servo tightening modules but also provides the screw feeding holes 2051, allowing screws to be fed to the tightening tool 300 through these holes. The receiving cup 205 is ingeniously designed; it reciprocates between the two screw feeding holes 2051, delivering screws from the screw feeder to the designated tightening tool 300 as needed. This design improves the module's flexibility, enabling it to handle screws from different sources and adapt to more complex assembly scenarios. Simultaneously, the screw feeding holes 2051 serve both to feed screws to the two servo tightening modules and to facilitate the extension of the screw feed hole by the bit 301 for tightening operations.

[0046] The transplanting assembly 200 in this embodiment also includes a housing, which prevents the blow-nail tube 400 screw from falling into the product and also serves as a dustproof and waterproof measure.

[0047] The blow-nail tube 400, which passes through the mounting base plate, controllably feeds screws into the receiving cup 205. The blow-nail tube 400 is a crucial component of the screw supply system, responsible for conveying screws from the screw feeder to the receiving cup 205. The design of the blow-nail tube 400 considers the smooth flow and accurate positioning of the screws, ensuring that they enter the receiving cup 205 precisely, avoiding jamming or falling. By controlling the airflow within the blow-nail tube 400, the screw delivery speed and position can be precisely controlled to meet various assembly requirements. Furthermore, the blow-nail tube 400 can be integrated with other sensors and control systems to achieve automated management and monitoring of screws.

[0048] By setting servo parameters, screws can be easily fed into deep holes while accurately obtaining the downward pressure and feed rate, thus enabling the closed-loop servo control system to adaptively perform the tightening process. The parameter settings of the servo system are crucial to the performance of the entire module. By precisely adjusting the parameters of servo motors such as the Z-axis servo motor 503 and the transfer servo motor 201, such as speed, acceleration, and torque, the screw feeding process can be optimized, ensuring that the screw can smoothly enter deep holes or hard-to-reach positions. Simultaneously, the servo system can provide real-time feedback on the downward pressure and feed rate during the tightening process. This data is important for judging tightening quality, adjusting tightening strategies, and preventing quality problems such as over-tightening or under-tightening. The application of the closed-loop servo control system makes the entire tightening process more intelligent and adaptive, automatically adjusting tightening parameters according to different workpiece and material characteristics, improving the accuracy and reliability of assembly.

[0049] Specifically, such as Figure 1 As shown, the dual-axis servo tightening module of this embodiment also includes a drive structure that drives the receiving cup 205 to reciprocate. The drive structure is a key component in the transfer assembly that enables the movement of the receiving cup 205. It is responsible for driving the receiving cup 205 to reciprocate between the two screw feeding holes 2051 according to the instructions of the control system. The design of the drive structure considers accuracy, speed, and stability, ensuring that the receiving cup 205 can be accurately positioned between the screw feeding hole 2051 and the tightening tool 300, achieving smooth screw transfer. Furthermore, the drive structure can cooperate with other sensors and control systems to achieve automated management and monitoring of the receiving cup 205, improving the automation level and work efficiency of the entire module.

[0050] In this embodiment, the drive structure also includes an idler pulley 203 for pre-tensioning, and an adjusting screw 2031 is provided on the idler pulley 203 to control the distance between the idler pulley 203 and the timing belt 204, thereby adjusting the tension of the timing belt 204. The design of the idler pulley 203 can effectively maintain the tension of the timing belt 204 and prevent transmission errors caused by slack.

[0051] In this embodiment, there are three synchronous pulleys 202, which are arranged in a triangular pattern. This layout not only improves the stability of the transmission but also makes the entire drive structure more compact. One of the synchronous pulleys 202 is connected to the drive shaft of the transplant servo motor 201, which is connected to the mounting backplate 100, thereby optimizing the spatial layout and making the entire module simpler and more efficient.

[0052] This embodiment also includes a timing belt pressure plate 2041, which connects the receiving cup 205 to the timing belt 204, ensuring that the receiving cup 205 is firmly fixed on the timing belt 204 and moves with the timing belt 204. This design makes the movement of the receiving cup 205 more stable and reliable. A transfer linear guide 206 is used for sliding the receiving cup 205 and controlling its direction of movement. The design of the transfer linear guide 206 considers precision and wear resistance, ensuring that the receiving cup 205 can slide smoothly on the guide while maintaining high positioning accuracy.

[0053] In this embodiment, the drive structure also includes a multi-stroke telescopic cylinder, an electric cylinder or crank-connecting rod, and a cam structure. These drive structures offer a variety of options, allowing selection based on different application scenarios and requirements. Multi-stroke telescopic cylinders are suitable for applications requiring larger strokes and higher speeds, while electric cylinders provide higher precision and controllability. Crank-connecting rods and cam structures are suitable for some special motion trajectories and mechanical designs that strive for simplification. This diversity of drive structures makes the entire module more flexible and adaptable.

[0054] In this embodiment, the interface between the blow-nail tube 400 and the mounting base plate is located at the midpoint of the travel of the receiving cup 205. The receiving cup 205 is equidistant from the two nail feeding holes 2051, improving the accuracy, precision, and stability of subsequent nail feeding. Simultaneously, this layout makes the entire module structure more compact and rational.

[0055] In this embodiment, the tightening tool 300 is equipped with a screwdriver bit 301, and a screw-collecting tube 302 is sleeved on the front end of the screwdriver bit 301. The side of the screw-collecting tube 302 closest to the mounting base plate is connected to the screw feeding hole 2051 via a screw-collecting tube support shaft 3021. A tool mounting base 304 is also provided between the tightening tool 300 and the screwdriver bit 301. The screwdriver bit 301 directly contacts the screw to complete the tightening operation. The design of the screw-collecting tube 302 enables the tightening tool 300 to automatically pick up the screw, improving the degree of automation. The screw-collecting tube support shaft 3021 ensures the stability and accuracy of the screw-collecting tube 302 during the tightening process. The tool mounting base 304 provides a convenient installation and removal method, allowing operators to easily replace different types of screwdriver bits 301 according to actual needs.

[0056] In this embodiment, the Z-axis moving assembly 500 includes a Z-axis rolling screw 501. One end of the Z-axis rolling screw 501 is rotatably connected to the mounting base plate, and the other end of the Z-axis rolling screw 501 is connected to a Z-axis servo motor 503. A pin-collecting seat lower seat that moves relative to the axial direction is provided on the Z-axis rolling screw 501. The pin-collecting seat is slidably connected to a Z-axis linear guide rail 504 provided on the mounting back plate 100. A guide rail clamp 502 for braking is also provided on the pin-collecting seat lower seat. The guide rail clamp 502 is used to lock the position of the pin-collecting seat when needed to prevent it from moving due to external force.

[0057] In this embodiment, the lower seat of the nail suction holder is further provided with an upper seat 303 for docking with the nail suction tube 302. A first vacuum tube that docks with the nail suction tube 302 is provided on the upper seat 303, allowing for nail suction via vacuum adsorption. The upper seat 303 engages radially with the nail suction tube 302. This design ensures that the upper seat 303 is firmly fixed to the nail suction tube 302, guaranteeing the stability and reliability of vacuum adsorption. Simultaneously, the engaging design provides a convenient disassembly method, allowing operators to easily replace different models of nail suction tubes 302 according to actual needs.

[0058] In this embodiment, a feed sensor 401 is installed on the blowpipe 400 to determine the screw status. The feed sensor 401 is responsible for detecting whether the screw has successfully fallen into the receiving cup 205. By monitoring the screw status in real time, the feed sensor 401 can promptly detect and resolve problems in the screw supply process, ensuring the normal operation of the entire module.

[0059] In this embodiment, a second vacuum tube is also provided on the receiving cup 205. The second vacuum tube is connected to the vacuum pressure switch 402 and is used to remove dust from the screw and to determine the screw's status by monitoring the pressure changes in the second vacuum tube. The design of the second vacuum tube not only improves the cleanliness of the screw but also enables real-time monitoring of the screw's status through the vacuum pressure switch 402. When the screw enters the receiving cup 205, the second vacuum tube removes dust and impurities from the screw, ensuring its cleanliness and accurate delivery. Simultaneously, the vacuum pressure switch 402 can also determine whether the screw has successfully entered the receiving cup 205 based on the pressure changes in the second vacuum tube, providing a reliable guarantee for subsequent tightening operations.

[0060] The working principle of this embodiment is as follows:

[0061] In the initial state, the receiving cup 205 corresponds to the interface position of the blow nail tube 400. Under the control of the control system, the blow nail tube 400 conveys the screw from the nail feeder to the receiving cup 205.

[0062] The receiving cup 205 then moves precisely between the two feeding holes 2051 via a drive structure (such as the synchronous pulley 202 assembly and the transfer linear guide 206).

[0063] When the receiving cup 205 moves to one of the nail feeding holes 2051, the nail suction tube 302 on the tightening tool 300 generates a vacuum suction force through the first vacuum tube, which attracts the screw from the receiving cup 205 into the nail suction tube 302 and connects it with the bit 301. At the same time, the receiving cup 205 returns to the interface with the blow nail tube 400 to pick up the nail again.

[0064] At this time, the Z-axis servo motor 503 converts the rotational motion into linear motion through the Z-axis ball screw 501, driving the screw holder (carrying the screw) to move axially along the Z-axis linear guide 504, preparing to send the screw into the hole to be tightened.

[0065] The guide rail clamp 502 can brake the pin holder when needed to ensure it remains stable in a specific position.

[0066] Once the screw reaches the position of the hole to be tightened, the tightening tool 300 (such as bit 301) starts working, and tightens the screw to the predetermined torque value by controlling the downward pressure and feed amount through servo parameters.

[0067] The servo control system adjusts the tightening process in real time based on feedback information such as torque, downforce, and feed rate to ensure the accuracy and consistency of tightening quality.

[0068] During the tightening process described above, the receiving cup 205 delivers the obtained screws to another servo tightening module, facilitating the operation of the other servo tightening module, and so on in a cycle.

[0069] Through the coordinated action of the control system and the mechanical transmission mechanism, the two servo tightening modules work alternately, which greatly improves the work efficiency. The modules can complete continuous tightening operations efficiently and accurately.

[0070] The above description is an explanation of the present utility model and not a limitation thereof. The scope of the present utility model is defined by the claims. Within the protection scope of the present utility model, any form of modification may be made.

Claims

1. A dual-axis servo tightening module, characterized in that, include: The servo tightening module consists of two units connected side-by-side to the same mounting backplate. The servo tightening module includes a tightening tool capable of picking up nails and a Z-axis movement component capable of axial movement. The transplanting assembly includes a mounting base plate that is simultaneously connected to two servo tightening modules, and at least two nail feeding holes for the extension and retraction of the servo tightening modules are provided on the mounting base plate. The transplanting assembly is also provided with a receiving cup that reciprocates in the two nail feeding holes. The blow-nail tube runs through the mounting base plate and can controllably feed screws into the receiving cup.

2. The dual-axis servo tightening module as described in claim 1, characterized in that: The transplanting assembly also includes a drive structure that moves the receiving cup back and forth.

3. The dual-axis servo tightening module as described in claim 2, characterized in that: The driving structure includes: A synchronous pulley assembly includes at least two synchronous pulleys and a synchronous belt wound around the synchronous pulleys, wherein one of the synchronous pulleys is provided with a transplanting servo motor for rotational drive; The timing belt pressure plate is used to connect the receiving cup to the timing belt, so that the receiving cup can move along the timing belt direction; The transfer linear guide is used for sliding the receiving cup and controlling the direction of movement of the receiving cup.

4. The dual-axis servo tightening module as described in claim 2, characterized in that: The drive structure also includes one of the following: a multi-stroke telescopic cylinder, an electric cylinder, or a crank connecting rod and a cam structure.

5. A dual-axis servo tightening module as described in claim 1, characterized in that: The interface between the blown nail tube and the mounting base plate is located at the midpoint of the receiving cup's stroke.

6. A dual-axis servo tightening module as described in claim 1, characterized in that: The tightening tool is equipped with a screwdriver bit, and a nail suction tube is sleeved on the front end of the screwdriver bit. The side of the nail suction tube near the mounting base plate is connected to the nail feeding hole through the nail suction tube support shaft. A tool mounting base is also provided between the tightening tool and the screwdriver bit.

7. A dual-axis servo tightening module as described in claim 1, characterized in that: The Z-axis moving assembly includes a Z-axis rolling screw, one end of which is rotatably connected to the mounting base plate, and the other end of which is connected to a Z-axis servo motor. A pin-collecting seat lower seat that moves relative to the axial direction is provided on the Z-axis rolling screw. The pin-collecting seat is slidably connected to a Z-axis linear guide rail provided on the mounting back plate, and a guide rail clamp for braking is also provided on the pin-collecting seat lower seat.

8. A dual-axis servo tightening module as described in claim 7, characterized in that: The lower seat of the nail suction base is also provided with an upper seat of the nail suction base for docking with the nail suction tube, and a first vacuum tube for docking with the nail suction tube is provided on the upper seat of the nail suction base.

9. A dual-axis servo tightening module as described in claim 1, characterized in that: A material drop sensor is installed on the blown nail tube.

10. A dual-axis servo tightening module as described in claim 1, characterized in that: The receiving cup is also equipped with a second vacuum tube, which is connected to a vacuum pressure switch. It is used to remove dust from the screw and to determine the condition of the screw by the pressure change of the second vacuum tube.

Images