Flexible teaching type screw tightening control system

Abstract

The utility model provides a flexible teaching type screw tightening control system, and relates to the technical field of screw assembling. The system comprises a control assembly, a base, a moving assembly and a tightening assembly, the control assembly comprises a display module and a PLC, the PLC is used for transmitting and receiving data with the display module, the moving assembly and the tightening assembly, and the PLC is used for obtaining position information of the moving assembly in real time; the display module is used for displaying the position information of the mobile component in real time and a confirmation window related to confirmation of the position information of the mobile component; the PLC is further used for storing the position information of the moving assembly and the product formula information, the PLC is used for controlling the moving assembly to move the workpiece, and when the to-be-tightened position of the workpiece moves to the target position, the PLC controls the tightening assembly to drive the screw to rotate relative to the workpiece so as to connect the screw with the workpiece. Therefore, the system is convenient to adapt to screw assembly of various workpieces, is simple and visual, and is relatively convenient to use.

Description

Technical Field

[0001] This application relates to the technical field of fastener assembly, and particularly to a flexible teachable screw tightening control system for screws. Background Art

[0002] Fastener connection is a connection method for workpiece assembly. Taking screws as an example, after aligning the screw with the connection position to be connected on the workpiece, the screw is rotated to connect the screw with the connection position, thereby assembling the workpiece.

[0003] In the related art, in large-scale workpiece assembly, semi-automatic or fully automatic methods are adopted to achieve screw assembly operations. For example, some enterprises use a combination of robots and tooling fixtures to achieve screw assembly operations, that is, after the workpiece to be assembled is preliminarily positioned by the tooling fixture, the robot equipped with a tightening tool controls the movement trajectory and positioning through teach-in learning to achieve screw assembly.

[0004] Using the above method, during actual assembly, since there are multiple sets of different screw tightening positions for different workpieces, the programmer needs to read the corresponding tightening positions of the screws and record them in the program during programming, which is cumbersome to operate. Summary of the Utility Model

[0005] This application provides a flexible teachable screw tightening control system to achieve the effects of flexibility and convenience in screw tightening control teaching.

[0006] To achieve the above purpose, the technical solution of this application is as follows:

[0007] This application provides a flexible teachable screw tightening control system, including a base, a control component, a moving component and a tightening component arranged on the base. The control component includes a display module and a PLC, where:

[0008] Both the PLC and the display module are arranged on one side of the base. The PLC is used to send and receive data between the display module, the moving component and the tightening component. The PLC is used to obtain the position information of the moving component in real time. The display module is used to display the position information of the moving component and a confirmation window related to confirming the position information of the moving component in real time;

[0009] The PLC is also used to store the position information of the moving component and the product recipe information. The PLC is used to control the moving component to move the workpiece. When the tightening position of the workpiece moves to the target position, the PLC controls the tightening component to drive the screw to rotate relative to the workpiece to connect the screw with the workpiece.

[0010] In some possible implementation manners, for the flexible teachable screw tightening control system provided by the embodiments of the present application, the product formula information includes several product models, as well as the tightening parameters of the screws to be tightened corresponding to each product model, the total number of screws to be tightened, the position of each screw to be tightened, and the serial number information of each screw to be tightened;

[0011] The display module is further configured to display an editing window for the serial number of the screw to be tightened;

[0012] The PLC is further configured to store the serial number of the screw to be tightened.

[0013] In some possible implementation manners, for the flexible teachable screw tightening control system provided by the embodiments of the present application, the tightening assembly includes a tightening member and a lifting member. The tightening member is connected to the lifting member. The tightening member is used to drive the screw to rotate relative to the workpiece, and the lifting member is used to drive the tightening member to rise or fall in the vertical direction.

[0014] In some possible implementation manners, for the flexible teachable screw tightening control system provided by the embodiments of the present application, the tightening member includes a conveying member, a tightening shaft, a rotating member, and a tightening device. The tightening shaft is connected to the lifting member. The tightening device has a receiving cavity. The tightening device has an outlet and an inlet communicating with the receiving cavity. The conveying member is connected to the tightening device. The conveying member is used to convey the screw through the inlet to the receiving cavity. The tightening shaft is inserted into the tightening device. The tightening shaft is used to connect with the screw and drive it to the outlet. The rotating member is used to drive the tightening shaft to rotate.

[0015] In some possible implementation manners, for the flexible teachable screw tightening control system provided by the embodiments of the present application, the tightening device further includes a clamping portion and a connecting portion. The clamping portion is arranged at the outlet of the receiving cavity and is used to clamp the screw. The connecting portion is arranged on the tightening shaft and is used to connect with the screw.

[0016] In some possible implementation manners, for the flexible teachable screw tightening control system provided by the embodiments of the present application, the lifting member includes a driving portion and a lifting rod. The driving portion is connected to the lifting rod. The lifting rod is connected to the tightening shaft. The driving portion drives the lifting rod to rise or fall, so as to drive the tightening shaft to rise or fall.

[0017] In some possible implementation manners, for the flexible teachable screw tightening control system provided by the embodiments of the present application, the moving assembly includes a first moving member and a second moving member. The second moving member is slidably arranged on the first moving member along a first direction. The second moving member is used to drive the workpiece to move along a second direction. The first direction is perpendicular to the second direction.

[0018] In some possible implementation manners, for the flexible teachable screw tightening control system provided by the embodiments of the present application, both the first moving member and the second moving member are electric cylinders, and encoders are provided on both the first moving member and the second moving member. The PLC is further configured to receive the data information of the encoders in real time.

[0019] In some possible implementation manners, for the flexible teachable screw tightening control system provided by the embodiments of the present application, the target position corresponds to the position of the connection position to be connected of the workpiece and the lifting position of the tightening assembly.

[0020] In some possible implementation manners, for the flexible teachable screw tightening control system provided by the embodiments of the present application, the PLC is further configured to call the total number of screws to be tightened, the position of each screw to be tightened, and the serial number of each screw to be tightened of the required product model in a preset product recipe information library. The PLC controls the moving assembly to move the workpiece according to the serial number of each screw to be tightened, the corresponding position of each screw to be tightened, and the total number of screws to be tightened, so that when the connection position to be connected of the workpiece moves to the corresponding screw tightening position in sequence according to the serial number of the screw to be tightened, the PLC controls the tightening assembly to drive the screw to be connected to the workpiece. After the tightening of each screw position of the total number of screws to be tightened is completed, the operation is stopped.

[0021] A flexible teachable screw tightening control system provided by the present application has the following beneficial effects:

[0022] 1. During the teaching process, the system obtains and displays the positions of the electric cylinders in the XY directions on the touch screen in real time. The real-time positions of the electric cylinders in the XY directions are recorded with one key through the touch screen, which is simple and intuitive, avoiding recording the positions of the screws to be tightened point by point in the program, and realizing the flexibility and convenience of screw tightening;

[0023] 2. The user can freely define the number and sequence of the screw tightening positions according to the requirements and save them in the recipe. Furthermore, during the process of the system assembling the screws on the workpiece, the tightening parameters of the corresponding product can be automatically called according to the product model, realizing the flexibility and convenience of screw tightening.

[0024] 3. The touch screen can display the position information of the currently tightened screw in real time, facilitating the personnel to view the working condition data of the screw tightening operation process in real time. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The accompanying drawings here are incorporated into the specification and form a part of the specification, showing embodiments consistent with the present application, and are used together with the specification to explain the principles of the present application.

[0026] Figure 1 It is a schematic structural diagram of the flexible teachable screw tightening control system provided by the embodiments of the present application;

[0027] Figure 2 is Figure 1 a schematic structural diagram of the moving component in

[0028] Figure 3 is Figure 1 a partially enlarged view of part A in

[0029] Description of the reference numerals in the drawings:

[0030] 100 - base;

[0031] 200 - moving component;

[0032] 210 - first moving part; 211 - first driving part; 212 - first guiding part; 213 - connecting base;

[0033] 220 - second moving part; 221 - second driving part; 222 - second guiding part; 223 - fixture;

[0034] 300 - tightening component;

[0035] 310 - tightening part; 311 - conveying part; 312 - tightening shaft; 313 - rotating part; 314 - tightening device;

[0036] 320 - lifting part; 321 - driving part; 322 - lifting rod;

[0037] 400 - control component.

[0038] Through the above - mentioned drawings, specific embodiments of the present application have been shown, and there will be more detailed descriptions hereinafter. These drawings and textual descriptions are not intended to limit the scope of the concept of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. Detailed Description of the Embodiments

[0039] Here, the exemplary embodiments will be described in detail, and the examples are shown in the drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. On the contrary, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims.

[0040] It should be noted that in the description of the embodiments of the present application, the terms indicating the orientation or positional relationship such as "upper", "lower", "inner", "outer", etc. are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of description, rather than indicating or implying that the device or component must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the embodiments of the present application.

[0041] In addition, it should be noted that the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of this application, "multiple" means two or more, unless otherwise clearly and specifically defined.

[0042] In this application, unless otherwise clearly specified and limited, the terms "installation", "connection", "fixation" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or mutual communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0043] It should be noted that the position to be connected, the position to be tightened and the position to be tightened in the present application refer to the screw tightening position on the workpiece. PLC is the abbreviation of Programmable Logic Controller, which is usually called programmable logic controller in Chinese.

[0044] Screw connection is a connection method for workpiece assembly. When assembling workpieces, it is necessary to align the screw with the position to be connected on the workpiece, and then use the tool knob to screw the screw so that the screw passes through the position to be connected and connects to the workpiece.

[0045] When assembling workpieces and screws in batches, each connection between the screws and the workpieces needs to be manually aligned and tightened using tools. Repeating the above steps is time-consuming and labor-intensive. Moreover, in manual operation, since the force applied by each person is different, the tightening force of the screws may be inconsistent, resulting in unstable assembly, requiring rework, and reducing assembly efficiency. In addition, manual operation has certain errors, especially in mass production, it is easy to have the phenomenon of screws not being tightened or being over-tightened, which affects the assembly effect.

[0046] In the related technology, in the large-scale assembly of workpieces, semi-automatic or fully automatic methods are used to realize the screw assembly operation. For example, some companies use a combination of robots and fixtures to realize the screw assembly operation, that is, after the workpiece to be assembled is initially positioned by the fixture, the robot equipped with the tightening tool is used to control the motion trajectory and positioning through teaching learning to realize the screw assembly.

[0047] In the above - mentioned manner, during actual assembly, since there are multiple sets of different screw - tightening positions for different workpieces, programmers need to read the corresponding tightening positions of the screws and record them in the robot program during programming, which is cumbersome.

[0048] In view of this, the embodiment of the present application provides a flexible teachable screw - tightening control system, including: a base, a moving component and a tightening component arranged on the base, and a control component. The control component includes a display module and a PLC. The PLC is used to obtain the position information of the moving component in real time. The display module is used to display the position information of the moving component and a confirmation window related to confirming the position information of the moving component in real time. The PLC is also used to store the position information of the moving component and the product formula information. The PLC can directly call the above - mentioned information. The PLC is used to control the moving component to move the workpiece. When the position to be tightened of the workpiece moves to the target position, it controls the tightening component to drive the screw to rotate relative to the workpiece to connect the screw and the workpiece. Moreover, during the teaching process, the PLC obtains the position information, and the display module displays the position information of the moving component in real time and stores it into the PLC through the confirmation window, which is simple and intuitive, avoiding cumbersome programming input and being relatively convenient to operate. Thus, the flexible teachable screw - tightening control system in the embodiment of the present application is relatively convenient to use.

[0049] The following combines Figures 1 to 3 and specific embodiments to elaborate on the present application in detail.

[0050] The present application provides a flexible teachable screw - tightening control system, including a base 100, a control component 400, a moving component 200 arranged on the base 100, and a tightening component 300. The control component 400 includes a display module and a PLC.

[0051] Specifically, the moving component 200 is arranged on the base 100. The base 100 provides stable support for the moving component 200, making the movement of the moving component 200 relatively stable. After the workpiece is placed on the moving component 200, the moving component 200 has a tray or a fixture, and the moving component 200 clamps the workpiece to prevent the workpiece from accidentally falling off during movement. The moving component 200 is used to move the workpiece to achieve the movement of the workpiece in a two - dimensional plane, such as the XY direction, so as to facilitate moving the workpiece to any position in the two - dimensional plane, such as the target position, and thus cooperate with the tightening component 300 to achieve the connection between the workpiece and the screw.

[0052] The tightening assembly 300 is disposed above the base 100. The tightening assembly 300 is connected to a screw. The tightening assembly 300 drives the screw to descend to approach the workpiece. When the screw is moved to the connection position on the workpiece, the tightening assembly 300 drives the screw to rotate relative to the workpiece, so as to connect the screw to the workpiece. The screw can be a screw, a bolt, a nut, a locking pin, etc., and this embodiment does not limit this. The connection position on the workpiece can be a connection hole, such as a threaded hole, and this embodiment does not limit this. It should be noted that the target position can be the position where the tightening assembly 300 ascends or descends. When the workpiece moves to the target position, the connection position on the workpiece is aligned with the screw on the tightening assembly 300.

[0053] Wherein, both the PLC and the display module are disposed on one side of the base 100. The PLC is used for sending and receiving data between the display module, the moving assembly 200, and the tightening assembly 300. The PLC is used for obtaining the position information of the moving assembly 200 in real time. The display module displays the position information of the moving assembly 200 and a confirmation window related to confirming the position information of the moving assembly 200 in real time. In some embodiments, the display module can be a touch display screen, and this application does not limit this. The PLC is used for sending and receiving data between the display module, the moving assembly 200, and the tightening assembly 300. The PLC can call the position information of the moving assembly 200 and the product recipe information, control the moving assembly 200 to move the workpiece, and when the tightening position of the workpiece moves to the target position, control the tightening assembly 300 to drive the screw to rotate relative to the workpiece to connect the screw to the workpiece.

[0054] In some embodiments, the moving assembly 200 includes two electric cylinders, and the two electric cylinders are respectively disposed along the transverse and longitudinal directions. The moving assembly 200 can be used to drive the workpiece to move in the x and Y directions, so as to align the tightening assembly 300 with the connection position on the workpiece. The PLC is electrically connected to the encoders of the electric cylinders, so that the PLC can read the coordinate position of the moving assembly 200 in real time, and the coordinate position of the screw to be tightened can be calculated through the PLC.

[0055] It can be understood that the position information of the moving component 200 is the coordinate position of the screw to be tightened. The PLC is electrically connected to the display module and displays the coordinate position of the screw to be tightened on the touch display screen. In the flexible teachable screw tightening control system according to the embodiment of the present application, the base 100 provides stable support for the moving component 200. By the position information of the moving component 200 and the product formula information pre-stored in the PLC, it is convenient to adapt to a variety of workpieces and their corresponding screw tightening positions. The position information of the moving component 200 and part of the product formula information can also be stored in the PLC in the form of teaching. The PLC stores the position information of the moving component 200 and the product formula information, and controls the moving component 200 to move the workpiece. When the position to be tightened of the workpiece moves to the target position, it controls the tightening component 300 to drive the screw to rotate relative to the workpiece to connect the screw and the workpiece.

[0056] It can be understood that during the teaching process, the system in the embodiment of the present application acquires and displays the position of the electric cylinder in the XY direction on the touch screen in real time. One key on the touch screen records the real-time position of the electric cylinder in the XY direction, which is simple and intuitive, avoiding cumbersome programming entry, such as recording the position of the screw to be tightened point by point in the program, and realizing the flexibility and convenience of screw tightening. Moreover, the touch screen can display the position information of the currently tightened screw in real time, facilitating personnel to view the working condition data of the screw tightening operation process in real time.

[0057] In addition, the user can freely define the number and order of the screw tightening positions according to the needs, save them in the formula. Furthermore, during the process of the system assembling the screw to the workpiece, it can automatically call the tightening parameters of the corresponding product according to the product model, realizing the flexibility and convenience of screw tightening. In some embodiments, in order to facilitate triggering the movement of the workpiece, the tightening system in the embodiment of the present application includes a first detection module and a second detection module. The second detection module is used to detect the position of the workpiece, and the first detection module is used to detect whether there is a workpiece on the moving component 200, so as to continue the operation only when there is a workpiece, preventing the empty running or misoperation of the moving component 200. The first detection module and the second detection module can be sensors or encoders, or machine vision can also be used to detect the workpiece.

[0058] When the first detection module detects that there is a workpiece on the moving component 200, the moving component 200 clamps the workpiece and quickly and accurately moves it to the target position, realizing the alignment of the position to be connected of the workpiece and the tightening component 300. When the workpiece moves to the target position, it controls the tightening component 300 to be connected to the screw. The tightening component 300 drives the screw to descend and approach the workpiece, and the tightening component 300 drives the screw to rotate relative to the workpiece to realize the connection between the screw and the workpiece. The tightening system in the embodiment of the present application has accurate positioning, facilitating the use of the tightening component 300 to drive the screw to rotate relative to the workpiece, enabling the workpiece and the screw to be quickly connected, and improving the tightening efficiency.

[0059] In some possible implementation manners, for the flexible teachable screw tightening control system provided by the embodiments of the present application, the product recipe information includes several product models and the tightening parameters of the screws to be tightened corresponding to each product model, the total number of screws to be tightened, the position of each screw to be tightened, and the serial number information of each screw to be tightened; the display module is further configured to display an editing window for the serial number of the screw to be tightened; the PLC is further configured to store the serial number of the screw to be tightened.

[0060] In specific implementation, the display module can be a display screen, and an editing interface for displaying the serial number of the screw to be tightened is provided on the display module, and the user can input the serial number of the tightened screw.

[0061] In some embodiments, the product recipe information includes several product models and the tightening parameters of the screws to be tightened corresponding to each product model, the total number of screws to be tightened, the position of each screw to be tightened, the serial number of each screw to be tightened and other information.

[0062] It should be noted that these product recipe information can be preset and stored in the system. For example, the product recipe information is a product database pre-stored in the tightening system, and product information such as product models, tightening positions, and tightening parameters of different products are stored in the product recipe database. The product recipe information can also be product models newly added by user-defined input, and the tightening parameters of the screws to be tightened corresponding thereto, the total number of screws to be tightened, the position of each screw to be tightened, the serial number of each screw to be tightened and other information. It has high flexibility and autonomy.

[0063] In some embodiments, for the flexible teachable screw tightening control system provided by the embodiments of the present application, the tightening assembly 300 includes a tightening member 310 and a lifting member 320. The tightening member 310 is connected to the lifting member 320. The tightening member 310 is used to drive the screw to rotate relative to the workpiece, and the lifting member 320 is used to drive the tightening member 310 to rise or fall in the vertical direction.

[0064] In specific implementation, the lifting member 320 facilitates adjusting the rise or fall of the tightening member 310 so that the tightening member 310 is relatively far from or close to the workpiece. The lifting member 320 can move the tightening member 310 to a certain height in the vertical direction and keep the tightening member 310 at its current height.

[0065] To enhance the stability of the tightening assembly 300, a support seat is provided on one side of the base 100, and the lifting member 320 is connected to the support seat through a connecting plate. Exemplarily, a plurality of threaded holes are provided on the connecting plate, and the threaded holes are spaced at intervals along the extending direction of the connecting plate. The connecting plate can be connected to the support seat by screws or bolts, and the screws or bolts are connected to the support seat through the threaded holes.

[0066] The embodiment of the present application does not limit the specific structure of the lifting member 320. Exemplarily, the lifting member 320 can be a pneumatic rod driven by a cylinder.

[0067] In some alternative implementation manners, for the flexible teachable screw tightening control system provided by the embodiment of the present application, the tightening member 310 includes a conveying member 311, a tightening shaft 312, a rotating member 313, and a tightening device 314. The tightening shaft 312 is connected to the lifting member 320. The tightening device 314 has a receiving cavity, and the tightening device 314 has an outlet and an inlet communicating with the receiving cavity. The conveying member 311 is connected to the tightening device 314. The conveying member 311 is configured to convey the screw to the receiving cavity through the inlet. The tightening shaft 312 is inserted into the tightening device 314. The tightening shaft 312 is configured to connect with the screw and drive it to the outlet. The rotating member 313 is configured to drive the tightening shaft 312 to rotate.

[0068] Specifically, the conveying member 311 is connected to the tightening shaft 312. Exemplarily, in combination with Figure 1 、 Figure 2 and Figure 3 , the conveying member 311 is disposed on one side of the tightening shaft 312. One end of the conveying member 311 is connected to the guiding tube, and the other end is connected to the inlet of the tightening shaft 312. The screw is conveyed by the conveying member 311 from the guiding tube through the inlet to the receiving cavity. The tightening shaft 312 is connected to the screw and conveys it to the outlet of the receiving cavity. At this time, the rotating member 313 drives the tightening shaft 312 to rotate, thereby driving the screw to rotate.

[0069] In some other possible implementation manners, for the flexible teachable screw tightening control system provided by the embodiment of the present application, the tightening device 314 further includes a clamping portion 315 and a connecting portion 316. The clamping portion 315 is disposed at the outlet of the receiving cavity for clamping the screw. The connecting portion 316 is disposed on the tightening shaft 312, and the connecting portion 316 is configured to connect with the screw.

[0070] Specifically, the clamping portion 315 and the connecting portion 316 are disposed on the tightening shaft 312. When the screw is conveyed into the receiving cavity 314 of the tightening shaft 312, the clamping portion 315 is connected to the screw.

[0071] During use, after the tightening shaft 312 is connected to the screw through the connecting portion 316 and drives the screw to the outlet of the receiving cavity, a clamping portion is disposed at the outlet of the receiving cavity to prevent the screw from skewing.

[0072] In some embodiments, for the flexible teachable screw tightening control system provided by the embodiment of the present application, the lifting member 320 includes a driving portion 321 and a lifting rod 322. The driving portion 321 is connected to the lifting rod 322. The lifting rod 322 is connected to the tightening shaft 312. The driving portion 321 drives the lifting rod 322 to rise or fall, so that the tightening shaft 312 rises or falls.

[0073] In specific implementation, the lifting member 320 is used to control the lifting movement of the tightening shaft 312.

[0074] In the embodiments of the present application, the driving part 321 of the lifting member 320 is not limited. Exemplarily, the driving part 321 can be a cylinder. During use, the cylinder is arranged on the connecting plate, and the cylinder is connected to the lifting rod 322. The cylinder is used to drive the lifting rod 322 to extend or contract in the vertical direction. Taking the screw as an example, when there is a threaded hole on the workpiece, when the lifting rod 322 extends, the tightening shaft 312 approaches the workpiece. When the screw on the tightening shaft 312 moves to the threaded hole position of the workpiece, the tightening shaft 312 rotates, driving the screw to rotate relative to the workpiece and connecting with the workpiece through the threaded hole. When the lifting rod 322 contracts, the tightening shaft 312 moves away from the workpiece, facilitating the reset of the tightening shaft 312 and preparing for the next screw tightening operation.

[0075] In some possible implementation manners, in the flexible teachable screw tightening control system provided by the embodiments of the present application, the moving assembly 200 includes a first moving member 210 and a second moving member 220. The second moving member 220 is slidably arranged on the first moving member 210 along a first direction, and the second moving member 220 is used to drive the workpiece to move along a second direction, and the first direction is perpendicular to the second direction.

[0076] In specific implementation, in combination with Figure 1 and Figure 2 , the second moving member 220 is slidably arranged on the first moving member 210 along the first direction, and the first direction can be the Figure 2 X direction shown in

[0077] . Exemplarily, the first moving member 210 provides support and a sliding track for the second moving member 220 to ensure the smooth and precise movement of the second moving member 220. Figure 2 The second moving member 220 is used to drive the workpiece to move along the second direction, and the second direction is the

[0078] Y direction shown in

[0079] . The first direction is perpendicular to the second direction. The first moving member 210 and the second moving member 220 realize the positioning of the workpiece in the two-dimensional plane, such as the coordinates in the X direction and the coordinates in the Y direction.

[0078] In some embodiments, the guiding lengths of the first moving member 210 and the second moving member 220 can be set according to actual situations, and the embodiments of the present application do not limit this. Exemplarily, the guiding length of the first moving member 210 is greater than the guiding length of the second moving member 220.

[0079] In some embodiments, in the flexible teachable screw tightening control system provided by the embodiments of the present application, both the first moving member 210 and the second moving member 220 are electric cylinders, and encoders are provided on both the first moving member 210 and the second moving member 220. The PLC is further configured to receive the data information of the encoders in real time.

[0080] The first moving member 210 includes a first driving member 211, a first guiding member 212, and a connecting base 213. The first guiding member 212 is connected to the first driving member 211, and the connecting base 213 is connected to the first guiding member 212. The second moving member 220 is disposed on the connecting base 213. The first driving member 211 drives the second moving member 220 to move in the first direction through the first guiding member 212 and the connecting base 213.

[0081] The first driving member 211 provides the moving power in the first direction for the connecting base 213. The first driving member 211 can be an electric cylinder, and the present application does not limit this.

[0082] The first guiding member 212 can be a slide rail, a guide rod, or a guide rail, as long as it can ensure the moving accuracy and smoothness of the connecting base 213 to reduce friction and resistance. The present application does not specifically limit the structure of the first guiding member 212.

[0083] The second moving member 220 includes a second driving member 221, a second guiding member 222, and a fixture 223. The second guiding member 222 is connected to the second driving member 221, and the fixture 223 is connected to the second guiding member 222. The fixture 223 is used for clamping the workpiece, and the second driving member 221 drives the second guiding member 222 to drive the fixture 223 to move in the second direction.

[0084] Specifically, the fixture is used to clamp the workpiece to prevent the workpiece from falling during movement. The first guiding member 212 can also be a slide rail, a guide rod, or a guide rail. The second driving member 221 drives the second guiding member 222 to drive the fixture 223 to move in the second direction. The second driving member 221 can also be an electric cylinder.

[0085] In some embodiments, both the first moving member 210 and the second moving member 220 are electric cylinders, and the present application does not limit this.

[0086] During use, the present application does not limit the sequence of movement of the first moving member 210 and the second moving member 220. It can be that the first moving member 210 moves first and the second moving member 220 moves later; or the second moving member 220 moves first and the first moving member 210 moves later; of course, they can also move simultaneously. Taking the first moving member 210 moving first and the second moving member 220 moving later as an example, the first moving member 210 drives the workpiece to move in the X direction through the second moving member 220, so that the extension line of the connection position of the workpiece in the Y direction coincides with the extension line of the tightening shaft in the Y direction. At this time, the second moving member 220 then drives the workpiece to move in the Y direction to align the connection position of the workpiece with the tightening device. Exemplarily, the connection position of the workpiece is a threaded hole on the workpiece, which is oppositely arranged relative to the screw outlet at the end of the tightening shaft, such as the screw outlet at the end of the tightening shaft.

[0087] In some possible implementation manners, in the flexible teachable screw tightening control system provided by the embodiments of the present application, the target position corresponds to the position of the to-be-connected position of the workpiece and the lifting position of the tightening assembly 300.

[0088] It can be understood that when the to-be-connected position of the workpiece is not aligned with the target position, the control component 400 controls the moving component 200 to move the workpiece, so that when the to-be-connected position of the workpiece moves to the target position in sequence, the tightening component 300 is controlled to be connected with the screw, and the tightening component 300 is controlled to drive the screw to rotate relative to the workpiece to connect the screw and the workpiece.

[0089] In some possible implementation manners, in the flexible teachable screw tightening control system provided by the embodiments of the present application, when there are multiple to-be-connected positions of the workpiece, the sequence number of the screws to be tightened in the PLC is called, and the moving component 200 is controlled to move the workpiece, so that when the to-be-connected positions of the workpiece move to the target position in sequence, the tightening component 300 is controlled to drive the screw to be connected with the workpiece.

[0090] In some possible implementation manners, in the flexible teachable screw tightening control system provided by the embodiments of the present application, the PLC is further configured to call the total number of screws to be tightened, the position of each screw to be tightened, and the sequence number of each screw to be tightened of the required product model in a preset product recipe information library. The PLC controls the moving component 200 to move the workpiece according to the sequence number of each screw to be tightened, the corresponding position of each screw to be tightened, and the total number of screws to be tightened, so that when the to-be-connected position of the workpiece moves to the corresponding screw tightening position in sequence according to the sequence number of the screws to be tightened, the PLC controls the tightening component 300 to drive the screw to be connected with the workpiece, and the operation is stopped after the tightening of each screw tightening position of the total number of screws to be tightened is completed.

[0091] Specifically, the PLC can call the total number of screws to be tightened, the position of each screw to be tightened, and the sequence number of each screw to be tightened of the required product model in a preset product recipe information library.

[0092] The PLC controls the moving component 200 to move the workpiece, so that when the to-be-connected position of the workpiece moves to the corresponding screw tightening position in sequence according to the sequence number of the screws to be tightened, the PLC controls the tightening component 300 to drive the screw to be connected with the workpiece, and the operation is stopped after the tightening of each screw tightening position of the total number of screws to be tightened is completed.

[0093] Exemplarily, when the number of connection positions of the workpiece to be connected is multiple, move the workpiece to align each connection position to the tightening shaft 312 in sequence. When each connection position is aligned to the tightening shaft 312 in sequence, the PLC stores the position information corresponding to the workpiece. The position information includes the coordinate value in the X direction and the coordinate value in the Y direction. And use this position information as the first workpiece target position value, the second workpiece target position value, the third workpiece target position value, the fourth workpiece target position value, etc., so that subsequent same workpieces can be moved to the first workpiece target position value, the second workpiece target position value, the third workpiece target position value, the fourth workpiece target position value, etc. in sequence. The number of position information is set according to the number of connection positions.

[0094] When there are workpieces of multiple specifications, the corresponding connection positions may be different. For the convenience of distinction, the workpieces of different specifications are numbered so that workpieces of different models correspond to different position information, which is convenient for calling the sequence number of the screws to be tightened in the PLC and controlling the tightening assembly 300 to drive the screws to be connected to the workpiece.

[0095] It should be noted that after the screws on the tightening assembly 300 are tightened in matching with the connection positions on the workpiece, the tightening assembly 300 can perform a reset operation to facilitate the next operation.

[0096] Those skilled in the art will readily conceive of other embodiments of the present application after considering the specification and practicing the utility model disclosed herein. This application is intended to cover any variations, uses, or adaptations of the present application, which follow the general principles of the present application and include known common knowledge or conventional technical means in the technical field not disclosed in the present application. The specification and examples are only regarded as exemplary, and the true scope and spirit of the present application are pointed out by the following claims.

[0097] It should be understood that the present application is not limited to the exact structures described above and shown in the drawings, and various modifications and changes can be made without departing from its scope. The scope of the present application is only limited by the appended claims.

Claims

1. A flexible teachable screw tightening control system, characterized in that: The invention comprises a base (100), a control component (400), a moving component (200) and a tightening component (300) arranged on the base (100), wherein the control component (400) comprises a display module and a PLC, wherein: The PLC and the display module are both arranged on one side of the base (100); the PLC is used to send and receive data between the display module, the moving component (200) and the tightening component (300); the PLC is used to obtain position information of the moving component (200) in real time; and the display module is used to display the position information of the moving component (200) and a confirmation window related to confirming the position information of the moving component (200) in real time; The PLC is also used to store position information and product formula information of the moving component (200), and the PLC is used to control the moving component (200) to move the workpiece, and when the position to be tightened of the workpiece moves to the target position, the PLC controls the tightening component (300) to drive the screw to rotate relative to the workpiece, so as to connect the screw and the workpiece.

2. The flexible teachable screw tightening control system according to claim 1, characterized in that: The product formula information includes several product models and the tightening parameters of the screws to be tightened corresponding to each product model, the total number of screws to be tightened, the position of each screw to be tightened, and the sequence number information of each screw to be tightened; The display module is further configured to display an editing window with a sequence number of the screws to be tightened; The PLC is further configured to store the sequence numbers of the screws to be tightened.

3. The flexible teachable screw tightening control system according to claim 1, characterized in that: The tightening assembly (300) comprises a tightening member (310) and a lifting member (320), wherein the tightening member (310) is connected to the lifting member (320), the tightening member (310) is used to drive the screw to rotate relative to the workpiece, and the lifting member (320) is used to drive the tightening member (310) to rise or fall in a vertical direction.

4. The flexible teachable screw tightening control system according to claim 3, characterized in that: The tightening member (310) comprises a conveying member (311), a tightening shaft (312), a rotating member (313) and a tightener (314); the tightening shaft (312) is connected to the lifting member (320); the tightener (314) has a receiving cavity therein; the tightener (314) has an outlet and an inlet communicated with the receiving cavity; the conveying member (311) is connected to the tightener (314); the conveying member (311) is used to convey the screw to the receiving cavity through the inlet; the tightening shaft (312) is plugged into the tightener (314); the tightening shaft (312) is used to connect to the screw and drive it to the outlet; the rotating member (313) is used to drive the tightening shaft (312) to rotate.

5. The flexible teachable screw tightening control system according to claim 4, characterized in that: The tightener (314) further comprises a clamping portion (315) and a connecting portion (316), wherein the clamping portion (315) is arranged at the outlet of the accommodating cavity and is used to clamp a screw, and the connecting portion (316) is arranged on the tightening shaft (312) and is used to be connected to the screw.

6. The flexible teachable screw tightening control system according to claim 3, characterized in that: The lifting member (320) comprises a driving part (321) and a lifting rod (322), wherein the driving part (321) is connected to the lifting rod (322), and the lifting rod (322) is connected to the tightening shaft (312), and the driving part (321) drives the lifting rod (322) to rise or fall, so as to cause the tightening shaft (312) to rise or fall.

7. The flexible teachable screw tightening control system according to any one of claims 2 to 5, characterized in that: The moving assembly (200) comprises a first moving member (210) and a second moving member (220), wherein the second moving member (220) is slidably arranged on the first moving member (210) along a first direction, and the second moving member (220) is used to drive the workpiece to move along a second direction, wherein the first direction is perpendicular to the second direction.

8. The flexible teachable screw tightening control system according to claim 7, characterized in that: The first movable member (210) and the second movable member (220) are both electric cylinders, and encoders are provided on the first movable member (210) and the second movable member (220). The PLC is further configured to receive data information from the encoders in real time.

9. The flexible teachable screw tightening control system according to any one of claims 2 to 5, characterized in that: The target position is the position of the to-be-connected position of the workpiece, corresponding to the lifting position of the tightening assembly (300).

10. The flexible teachable screw tightening control system according to claim 9, characterized in that: The PLC is further configured to call the total number of screws to be tightened, the position of each screw to be tightened, and the sequence number of each screw to be tightened of the required product model in a preset product formula information library. The PLC controls the moving component (200) to move the workpiece according to the sequence number of each screw to be tightened, the corresponding position of each screw to be tightened, and the total number of screws to be tightened, so that when the position to be connected of the workpiece is moved to the corresponding position to be tightened of the screw in sequence according to the sequence number of the screw to be tightened, the PLC controls the tightening component (300) to drive the screw to connect with the workpiece until each position to be tightened of the total number of screws to be tightened is tightened, and then stops the operation.

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