Screw locking system

Abstract

The utility model provides a screw locking system. The screw locking system comprises an electric screwdriver, a code reader, an alarm, an upper computer and a server which are connected through signals. The electric screwdriver is used for locking and attaching a plurality of screws to a product; the code reader is used for reading a bar code on a product or a product carrying disc, and the alarm is used for sending out alarm information under the condition that the screw locking of the electric screwdriver is abnormal; and the upper computer is used for uploading abnormal information including the bar code and the abnormal screw locking position to the server under the condition that the screw locking of the electric screwdriver is abnormal, and calling the abnormal screw locking position from the server according to the bar code read by the code reader after the alarm sends out alarm information. Through operation of the electric screwdriver, the code reader, the alarm, the upper computer and the server, automatic alarm and calling of the abnormal screw locking position can be realized under the condition that the screw locking of the electric screwdriver is abnormal, and reference is provided for subsequent screw complementary locking, so that automatic positioning of the unqualified abnormal screw locking position is realized, and the processing efficiency of the locking condition of the unqualified screw is improved.

Description

Technical Field

[0001] The present application relates to the technical field of assembly production, and in particular to a screw locking system. Background Art

[0002] In manufacturing, assembling screws on products is an important process to ensure the stability of the product assembly structure; with the increasing degree of automation in assembly processes, the application of automated screw locking systems is also gradually increasing.

[0003] However, the screw locking system used in the related art can only realize the automatic screw locking process during the screw assembly process. In the case of NG (Not Good) screws, it is necessary to manually determine the position of the NG screws and perform the subsequent screw re-tightening process, which makes the handling of the NG screw situation less efficient. Utility Model Content

[0004] The present application provides a screw locking system that can automatically alarm and call the abnormal position of the screw locking when the electric screwdriver is locking the screw abnormally for reference in subsequent screw locking, thereby realizing automatic positioning of the abnormal position of the unqualified screw locking and improving the efficiency of handling unqualified screw locking situations. The technical solution is as follows.

[0005] The present application provides a screw locking system, which includes an electric screwdriver, a code reader, an alarm, a host computer and a server connected by signals;

[0006] The electric screwdriver is used to fasten multiple screws to the product;

[0007] The barcode reader is used to read the barcode on the product or the product carrier;

[0008] The alarm is used to send out an alarm message when the electric screwdriver screws abnormally;

[0009] The host computer is used to upload abnormal information including the barcode and the abnormal position of the screw to the server when the electric screwdriver screws abnormally, and, after the alarm device sends an alarm message, call the abnormal position of the screw from the server based on the barcode read by the code reader.

[0010] In a possible implementation, the host computer is further configured to call the screw locking method corresponding to the abnormal screw locking position from the server according to the barcode read by the barcode reader;

[0011] The electric screwdriver is used to re-lock the screw at the abnormal screw locking position according to the screw locking method called by the host computer.

[0012] In a possible implementation, the screw locking method includes at least one of the following: a screw model, a screwdriver model used for locking, a locking torque parameter, and a number of locking turns.

[0013] In a possible implementation, the electric screwdriver is further used to remove a residual screw when there is a residual screw at an abnormal position of the locking screw.

[0014] In a possible implementation, the system further includes: an image acquisition device;

[0015] The image acquisition device is connected to the host computer and is used to upload the collected product images to the host computer;

[0016] The host computer is used to determine whether there is a residual screw at the abnormal position of the locking screw according to the received product image.

[0017] In a possible implementation, the system further includes a screw storage cabinet, wherein the screw storage cabinet includes at least two screw storage slots, each screw storage slot storing screws of a corresponding model;

[0018] The screw storage cabinet is connected to the host computer signal, and opens the corresponding screw storage slot according to the screw locking method called by the host computer.

[0019] In a possible implementation, the server is further configured to receive and store the screw locking results and screw locking information of each screw locking position.

[0020] In a possible implementation, the host computer is configured to upload the screw locking result and the screw locking information of the abnormal screw position to the server when the screw is re-locked successfully.

[0021] In a possible implementation, the alarm is used to issue a scrap indication message when the screw is abnormally re-fastened.

[0022] The screw locking system provided by the present application includes an electric screwdriver, a code reader, an alarm, a host computer and a server connected by signals; the electric screwdriver is used to lock multiple screws to the product; the code reader is used to read the barcode on the product or the product carrier, and the alarm is used to issue an alarm message when the electric screwdriver is locking the screws abnormally; the host computer is used to upload abnormal information including the barcode and the abnormal position of the locking screw to the server when the electric screwdriver is locking the screws abnormally, and after the alarm sends the alarm message, the abnormal position of the locking screw is retrieved from the server according to the barcode read by the code reader. Through the operation of the electric screwdriver, the code reader, the alarm, the host computer and the server, when the electric screwdriver is locking the screws abnormally, an alarm can be automatically issued and the abnormal position of the locking screw can be retrieved for reference in subsequent screw locking, thereby realizing automatic positioning of the abnormal position of unqualified locking screws and improving the efficiency of handling unqualified screw locking situations.

[0023] Additional aspects and advantages of the present application will be given in part in the description below, and in part will be reflected in the description below, or learned through practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0025] Figure 1 A schematic diagram of a screw locking system provided by an exemplary embodiment of the present application is shown;

[0026] Figure 2 A front view of a screw locking system provided by an exemplary embodiment of the present application is shown;

[0027] Figure 3 A side view of a screw locking system provided by an exemplary embodiment of the present application is shown;

[0028] Figure 4 A top view of a screw locking system provided by an exemplary embodiment of the present application is shown. DETAILED DESCRIPTION

[0029] The embodiments of the present application will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application and are not to be construed as limiting the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0030] The terms "first" and "second" in the specification and claims of this application may explicitly or implicitly refer to one or more of the features. Throughout the description of this application, unless otherwise specified, "plurality" means two or more. Furthermore, "and / or" in the specification and claims refers to at least one of the connected entities, and the character " / " generally indicates an "or" relationship between the connected entities.

[0031] In the description of this application, it should be understood that the terms "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "positive", "negative", "far", "near", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0032] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0033] The following combination Figure 1-Figure 4 , describing the screw locking system provided in an embodiment of the present application.

[0034] Figure 1 A schematic diagram of a screw locking system provided by an exemplary embodiment of the present application is shown in FIG. Figure 1 As shown, the system includes: an electric batch 11, a code reader 12, an alarm 13, a host computer 14 and a server 15 connected by signals;

[0035] The electric screwdriver 11 is used to fasten multiple screws to the product;

[0036] The barcode reader 12 is used to read the barcode on the product or the product carrier;

[0037] The alarm 13 is used to send out an alarm message when the electric screwdriver 11 is tightening the screw abnormally;

[0038] The host computer 14 is used to upload abnormal information including a barcode and the abnormal position of the screw to the server 15 when the electric screwdriver 11 is abnormal in locking the screw, and to call the abnormal position of the screw from the server 15 according to the barcode read by the code reader 12 after the alarm 13 sends an alarm message.

[0039] Among them, the electric screwdriver 11 is an electric tool, which is usually used to tighten the screw to an appropriate degree based on the indicated screw locking method; the screw locking system can be configured with multiple types of electric screwdrivers, or the same electric screwdriver can be configured with multiple types of electric screwdriver heads that can be automatically switched to meet the locking requirements of different types of screws; the code reader 12 can be a barcode reader or a QR code scanner, which is used to identify the identity information of the product or product carrier by scanning the barcode. In a possible implementation, such as Figure 1 As shown, the code reader 12 can be a handheld barcode scanner. In this case, manual operation of the handheld barcode scanner is required to perform the scanning operation; or, in another possible implementation, the code reader 12 can be a barcode scanner installed on the path of the product conveying device. After the product or product carrier passes through the barcode scanner, the barcode scanner can automatically perform the scanning operation. In this case, the barcode on the product or product carrier faces the barcode scanner; the alarm 13 is a device that can send an alarm message when an abnormality occurs in the screw locking process, wherein the alarm message can be sound information, or, it can also be light information; the host computer 14 is a computer device for data processing and device control in the screw locking system, which can be implemented as a terminal or industrial controller, etc., and this application does not limit this; the server 15 can be implemented as a local server, or a cloud server, or, it can also be a server cluster.

[0040] In the screw locking system, each component is connected by a signal, wherein the signal can be transmitted through a wired network and / or a wireless network; by configuring components such as an electric screwdriver 11, a code reader 12, an alarm 13, a host computer 14 and a server 15 in the screw locking system, based on the signal interaction between the above components, functions such as automatic screw locking, abnormality detection, alarm and data uploading are realized, which helps to improve the efficiency of the production line and the product quality control capability.

[0041] Among them, in the case of a screw locking abnormality, the screw locking abnormal position in the abnormal information reported by the upper computer 14 can be the position number corresponding to the screw locking abnormal position determined based on a pre-set screw coding sequence. In this case, the abnormal information can indicate that the product corresponding to the barcode or the product on the product carrier corresponding to the barcode has a screw locking abnormality at the screw locking position corresponding to the target position number, so that the server 15 can store the abnormal information and facilitate subsequent information retrieval.

[0042] Furthermore, the screw locking system can also realize automatic re-locking after a screw locking anomaly occurs. In this case, the host computer 14 is further used to call the screw locking method corresponding to the screw locking anomaly position from the server 15 according to the barcode read by the barcode reader 12;

[0043] The electric screwdriver 11 is used to re-tighten the screws at the abnormal screw locking position according to the screw locking method called by the host computer 14.

[0044] Each screw locking position is pre-set with a corresponding screw locking method based on production requirements; the screw locking method includes at least one of the following: the screw model, the electric screwdriver model used for locking, the locking torque parameter, and the number of locking turns. When re-locking the screw, the host computer 14 can control the electric screwdriver 11 of the electric screwdriver model indicated by the screw locking method to re-lock the screw of the screw model indicated by the screw locking method at the abnormal screw locking position according to the locking torque parameter and the number of locking turns.

[0045] Before re-locking the screw at the abnormal screw locking position, the upper computer 14 also needs to confirm whether there are any residual screws at the abnormal screw locking position, that is, confirm whether there are any screws remaining after the previous screw locking operation failed. If there are no residual screws at the abnormal screw locking position, the screw can be re-locked; if there are residual screws at the abnormal screw locking position, the residual screws are disassembled, and after the disassembly is completed, the screw is re-locked; in a possible implementation method, when disassembling the residual screws, the upper computer 14 can determine the corresponding screw disassembly method based on the screw locking method corresponding to the abnormal screw locking position, and instruct the electric screwdriver 11 to disassemble the screw based on the screw disassembly method; schematically, the screw operation direction indicated by the screw disassembly method is opposite to the screw operation direction indicated by the screw locking method; further, in order to ensure that the residual screws can be disassembled, the disassembly torque parameter indicated by the screw disassembly method can be greater than the locking torque parameter indicated by the screw locking method.

[0046] In a possible implementation, the system further includes a screw throwing box 17; the electric screwdriver 11 is used to place the remaining screws into the screw throwing box 17 after the remaining screws are disassembled. This is to collect the remaining screws and prevent the remaining screws from being scattered into the screw locking system and causing abnormal component operation.

[0047] In a possible implementation, the host computer 14 can determine the screw residue at the abnormal position of the screw lock by image analysis. In this case, the system further includes an image acquisition device 16. Figure 2 FIG. 1 shows a front view of a screw locking system provided by an exemplary embodiment of the present application. Figure 2As shown, the image acquisition device 16 can be set in the upper area of ​​the screw locking system to ensure that the image acquisition range of the image acquisition device 16 includes the product and the position of the product carrier; the image acquisition device 16 is connected to the host computer 14 for uploading the captured product image to the host computer 14; the host computer 14 is used to determine whether there are residual screws at the abnormal position of the screw locking according to the received product image.

[0048] Among them, the image acquisition device 16 can be implemented as a camera, or an industrial camera; the image acquisition device 16 can be connected to the host computer 14 via wired or wireless means; after receiving the image uploaded by the image acquisition device, the host computer 14 can determine whether there are residual screws in the abnormal position of the locking screw through image recognition and analysis.

[0049] In one possible implementation, Figure 2 As shown, the system further includes a screw storage cabinet 18, which includes at least two screw storage slots, each of which stores screws of corresponding models;

[0050] The screw storage cabinet 18 is connected to the host computer 14 by signal, and opens the corresponding screw storage slot according to the screw locking method called by the host computer 14.

[0051] In this case, when tightening the screws or re-tightening the screws, the host computer 14 instructs the screw storage cabinet 18 to open the corresponding screw storage slot based on the screw model indicated by the screw locking method corresponding to the screw locking position, so that the electric screwdriver 11 can retrieve the corresponding model of screws from the screw storage slot.

[0052] Furthermore, the screw storage slot 18 may be equipped with a sensor, which is used to close the screw storage slot after monitoring the completion of the screw removal operation; in one possible implementation, the sensor can be set at the edge of the notch of the screw storage slot 17. After the sensor detects that the electric screwdriver 11 is away from the screw storage slot, it is determined that the screw removal operation is completed and the screw storage slot is closed. Alternatively, the sensor can be set at the bottom of the screw storage slot 17 to monitor the total weight of the screws in the screw storage slot. After monitoring that the total weight of the screws decreases and the target time has passed, it is determined that the screw removal operation is completed and the screw storage slot is closed.

[0053] In one possible implementation, the host computer 11 is further configured to upload the screw locking result and screw locking information of the screw locking position to the server 15 after the screw locking operation at the screw locking position is completed. Accordingly, the server 15 is further configured to receive and store the screw locking result and screw locking information of each screw locking position; wherein the screw locking result indicates whether the screw locking is successful or the screw locking is abnormal, and the screw locking information may be various parameter streams in the actual screw locking process, such as locking torque parameter stream, angle parameter stream, etc.; or, the screw locking data may also be a parameter change image generated based on various parameter streams. By storing the screw locking results and screw locking information, it is possible to facilitate subsequent understanding of the product production situation and to facilitate information data extraction and verification.

[0054] In a possible implementation, if the screw locking is successful, the host computer 11 uploads the locking information to the server 15 so that the server 15 stores the information; if the screw locking fails, the locking information uploading process is not performed.

[0055] In the case of screw re-locking, the host computer 14 is used to upload the screw locking result and screw locking information of the abnormal screw position to the server 15 if the screw re-locking is successful, so as to record the re-locking process for subsequent inspection.

[0056] In order to ensure the quality of product production, if the screw re-locking fails, the product is determined to be unqualified. In this case, the alarm 13 is used to issue a scrap indication message when the screw re-locking is abnormal, so as to remind the relevant operators to analyze the product and carry out the product scrapping process to avoid the accumulation of unqualified products on the automatic production line; in this process, the upper computer 14 can compare the locking torque parameters in the re-locking process with the locking torque parameters in the screw locking method. When the difference between the two exceeds the difference threshold, it is determined that the screw re-locking is abnormal, that is, the re-locking has failed.

[0057] To further illustrate the structure of the screw locking system, Figure 3 A side view of a screw locking system provided by an exemplary embodiment of the present application is shown; Figure 4 A top view of a screw locking system provided by an exemplary embodiment of the present application is shown.

[0058] To sum up, the screw locking system provided by the present application includes an electric screwdriver, a code reader, an alarm, a host computer and a server connected by signals; the electric screwdriver is used to lock multiple screws to the product; the code reader is used to read the barcode on the product or the product carrier, and the alarm is used to issue an alarm message when the electric screwdriver is locking the screw abnormally; the host computer is used to upload the abnormal information including the barcode and the abnormal position of the locking screw to the server when the electric screwdriver is locking the screw abnormally, and after the alarm sends the alarm message, the abnormal position of the locking screw is retrieved from the server according to the barcode read by the code reader. Through the operation of the electric screwdriver, the code reader, the alarm, the host computer and the server, when the electric screwdriver is locking the screw abnormally, an alarm can be automatically issued and the abnormal position of the locking screw can be retrieved for reference in subsequent screw locking, thereby realizing automatic positioning of the abnormal position of unqualified locking screws and improving the efficiency of handling unqualified screw locking.

[0059] Those skilled in the art will readily appreciate other aspects of the present application after considering the specification and practicing the application disclosed herein. This application is intended to cover any variations, uses, or adaptations of the present application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein. The description and examples are to be considered as exemplary only, and the true scope and spirit of the present application are indicated by the following claims.

[0060] It should be understood that the present application is not limited to the exact structures described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present application is limited only by the appended claims.

Claims

1. A screw locking system, characterized in that: The system comprises an electric batch (11), a code reader (12), an alarm (13), a host computer (14) and a server (15) connected by signals; The electric screwdriver (11) is used to fasten a plurality of screws to the product; The code reader (12) is used to read the barcode on the product or the product carrier; The alarm (13) is used to send out an alarm message when the electric screwdriver (11) is abnormal in locking the screws; The host computer (14) is used to upload abnormal information including the barcode and the abnormal position of the screw to the server (15) when the electric screwdriver (11) is abnormal in locking the screw, and to call the abnormal position of the screw from the server (15) based on the barcode read by the code reader (12) after the alarm (13) issues an alarm message.

2. The screw locking system according to claim 1, characterized in that: The host computer (14) is further used to call the screw locking method corresponding to the abnormal position of the locking screw from the server (15) according to the barcode read by the barcode reader (12); The electric screwdriver (11) is used to re-lock the screw at the abnormal screw locking position according to the screw locking method called by the host computer (14).

3. The screw locking system according to claim 2, characterized in that: The screw locking method includes at least one of the following: screw model, screwdriver model used for locking, locking torque parameter and number of locking turns.

4. The screw locking system according to claim 1, characterized in that: The electric screwdriver (11) is also used for disassembling the remaining screws when there are remaining screws at abnormal positions of the locking screws.

5. The screw locking system according to claim 4, characterized in that: The system further comprises: an image acquisition device (16); The image acquisition device (16) is connected to the host computer (14) and is used to upload the acquired product image to the host computer (14); The host computer (14) is used to determine whether there is a residual screw at the abnormal position of the locking screw based on the received product image.

6. The screw locking system according to claim 4, characterized in that: The system further comprises: a screw throwing box (17); The electric screwdriver (11) is used to place the disassembled residual screws into the screw throwing box (17) after the residual screws are disassembled.

7. The screw locking system according to claim 2, characterized in that: The system further comprises a screw storage cabinet (18), wherein the screw storage cabinet (18) comprises at least two screw storage slots, each screw storage slot storing screws of corresponding models; The screw storage cabinet (18) is connected to the host computer (14) via a signal, and opens the corresponding screw storage slot according to the screw locking method called by the host computer (14).

8. The screw locking system according to claim 1, characterized in that: The server (15) is also used to receive and store the screw locking results and screw locking information of each screw locking position.

9. The screw locking system according to claim 8, characterized in that: The host computer (14) is used to upload the screw locking result and screw locking information of the abnormal screw position to the server (15) when the screw is successfully re-locked.

10. The screw locking system according to claim 2, characterized in that: The alarm (13) is used to issue a scrap indication message when the screw is abnormally re-locked.

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