A sensor-based axle screw tightening sequence detection mechanism

Abstract

The utility model relates to a kind of based on sensor's axle screw tightening sequence detection mechanism, comprising: workbench;Positioning tool, it is installed on workbench, and the positioning tool is equipped with the workpiece needing to be tightened screw in;Sensor one, sensor two, sensor three, sensor four, sensor five, sensor six and sensor seven are equipped on the workbench.This based on sensor's axle screw tightening sequence detection mechanism of the utility model, sensor one to sensor nine, wherein sensor one and sensor two detect tightening gun position, each sensor corresponds a working position;Sensor three detects whether workpiece is compressed;Sensor four to sensor seven respectively detect the sequence of locking screw 1-4, only sequentially execute according to specified screw sequence, and sensor detects tightening gun to position, only then record as qualified, if operator does not lock in order, or torque unqualified will be monitored, and record in system.

Description

Technical Field

[0001] This utility model relates to the field of detection technology, and in particular to a sensor-based mechanism for detecting the tightening sequence of axle screws. Background Technology

[0002] Screws, also known as bolts, are tools that use the physical and mathematical principles of inclined planes, circular rotation, and friction to gradually fasten objects and machine parts. They are generally made of metal or plastic, cylindrical in shape, and have raised and recessed threads on their surface. They are widely used in the fields of machinery, electrical appliances, and construction. Most industrial parts need to be fixed with screws, and generally, a single part requires a relatively large number of screws to secure it.

[0003] Currently, for some parts whose surfaces require multiple screws to be tightened, the tightening mechanism needs to be able to accurately position and apply force according to the specific location of the screws.

[0004] However, firstly, existing technologies are prone to deviations during the transfer process of tightening different screws, causing some screws to malfunction after being screwed in. Secondly, due to different screw tightening sequences, existing technologies often lead to deviations in component positions, preventing screws in other positions from being properly tightened. This is frequently encountered in actual screw tightening, and the only solution is to remove the screws and retighten them, which significantly reduces production and assembly efficiency. Utility Model Content

[0005] Therefore, the technical problem to be solved by this utility model is to overcome the problem in the prior art that when multiple screws need to be tightened on parts, the screws are often not tightened in the specified order, resulting in the screws not being locked in the correct position, which affects the assembly of the parts.

[0006] To solve the above-mentioned technical problems, this utility model provides a sensor-based axle screw tightening sequence detection mechanism, comprising: a worktable; a positioning fixture mounted on the worktable, wherein the positioning fixture contains a workpiece for which screws need to be tightened; a sensor one mounted on the worktable, wherein the sensor one is used to detect whether the positioning fixture presses the workpiece for which screws need to be tightened; a sensor two mounted on the worktable, wherein the sensor two is used to detect whether the screw tightening gun has reached working position one; a sensor three mounted on the worktable, wherein the sensor three is used to detect whether the screw tightening gun has reached working position two; the worktable is also provided with sensors four, five, six and seven, the signal detection ends of sensors four, five, six and seven are respectively aligned with the four screw tightening positions of the workpiece, and sensors four, five, six and seven are used to detect whether the sequence of tightening the screws on the workpiece by the tightening gun meets the requirements.

[0007] In one embodiment of this utility model, four connecting rods are installed on the lower end surface of the workbench, the four connecting rods are connected to a support plate, and a barcode scanner is installed on the support plate for scanning the code on the workpiece.

[0008] In one embodiment of this utility model, a through hole is provided at the position where the worktable and the barcode scanner are directly opposite each other, and an avoidance through hole is provided on the positioning fixture. The through hole and the avoidance through hole are connected, and the scanning end of the barcode scanner passes through the through hole and the avoidance through hole to scan the code on the workpiece.

[0009] In one embodiment of the present invention, the upper surface of the workbench is provided with mounting base one, mounting base two and mounting base three, sensor one is mounted on mounting base one, sensor two is mounted on mounting base two and sensor three is mounted on mounting base three.

[0010] In one embodiment of this utility model, the mounting base three is provided with an outer cover one, which is used to cover the sensor three.

[0011] In one embodiment of the present invention, the upper surface of the workbench is provided with mounting base four, mounting base five, mounting base six and mounting base seven. Sensor four is mounted on mounting base four, sensor five is mounted on mounting base five, sensor six is ​​mounted on mounting base six and sensor seven is mounted on mounting base seven.

[0012] In one embodiment of the present invention, the workbench is provided with an outer cover second and an outer cover third. The outer cover second is used to cover the mounting base fourth and the mounting base fifth, and the outer cover third is used to cover the mounting base sixth and the mounting base seventh.

[0013] In one embodiment of this utility model, the positioning fixture is provided with two through-beam photoelectric sensors, which are used to detect whether the top cover of the workpiece is assembled in place.

[0014] In one embodiment of this utility model, the positioning fixture is equipped with a sensor eight, which is used to detect whether the head of the workpiece is in position.

[0015] In one embodiment of this utility model, the positioning fixture is equipped with a sensor nine, which is used to detect whether the tail of the workpiece is in position.

[0016] Compared with the prior art, the above-mentioned technical solution of this utility model has the following beneficial effects:

[0017] The sensor-based axle screw tightening sequence detection mechanism of this utility model includes sensors one through nine. Sensors one and two detect the position of the tightening gun, with each sensor corresponding to a working position. Sensor three detects whether the workpiece is tightened. Sensors four through seven detect the tightening sequence of screws numbered 1 to 4 respectively. Only when the screws are tightened in the prescribed order and the sensors detect that the tightening gun is in the correct position will the result be recorded as qualified. If the operator does not tighten the screws in the correct order or the torque is not up to standard, this will be detected and recorded in the system. Attached Figure Description

[0018] To make the content of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings, wherein:

[0019] Figure 1 This is a schematic diagram of the sensor-based axle screw tightening sequence detection mechanism in a preferred embodiment of the present invention. Figure 1 ;

[0020] Figure 2 This is a schematic diagram of the sensor-based axle screw tightening sequence detection mechanism in a preferred embodiment of the present invention. Figure 2 ;

[0021] Figure 3 This is a schematic diagram of the sensor-based axle screw tightening sequence detection mechanism in a preferred embodiment of the present invention. Figure 3 .

[0022] Explanation of reference numerals in the accompanying drawings: Workbench 1, Connecting rod 11, Support plate 12, Barcode scanner 13, Through hole 14, Mounting base 15, Mounting base 2 16, Mounting base 3 17, Outer casing 171, Mounting base 4 18, Mounting base 5 19, Mounting base 6 110, Mounting base 7 111, Outer casing 2 112, Outer casing 3 113, Positioning fixture 2, Clearance through hole 20, Through-beam photoelectric sensor 21, Sensor 8 22, Sensor 9 23, Sensor 1 3, Sensor 2 4, Sensor 3 5, Sensor 4 6, Sensor 5 7, Sensor 6 8, Sensor 7 9. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand and implement the present invention. However, the embodiments are not intended to limit the present invention.

[0024] Reference Figure 1-3 As shown, the sensor-based axle screw tightening sequence detection mechanism of this utility model includes: a workbench 1; a positioning fixture 2, which is installed on the workbench 1, and the positioning fixture 2 contains a workpiece for which screws need to be tightened; a sensor 3, which is installed on the workbench 1, and the sensor 3 is used to detect whether the positioning fixture 2 presses the workpiece for which screws need to be tightened; a sensor 4, which is installed on the workbench 1, and the sensor 4 is used to detect whether the screw tightening gun has reached working position one; a sensor 5, which is installed on the workbench 1, and the sensor 5 is used to detect whether the screw tightening gun has reached working position two; the workbench 1 is also provided with a sensor 6, a sensor 7, a sensor 8, and a sensor 9, the signal detection ends of the sensors 6, 7, 8, and 9 are respectively aligned with the four screw tightening positions of the workpiece, and the sensors 6, 7, 8, and 9 are used to detect whether the sequence of tightening the screws on the workpiece by the tightening gun meets the requirements. Sensors 1 (3), 2 (4), 3 (5), 4 (6), 5 (7), 6 (8), and 7 (9) are all laser sensors.

[0025] To ensure the correct model number of the workpiece is placed, a work unit for detecting the workpiece model number is provided on the workbench 1. Four connecting rods 11 are installed on the lower end surface of the workbench 1, and the four connecting rods 11 are connected to a support plate 12. A barcode scanner 13 is installed on the support plate 12, and the barcode scanner 13 is used to scan the code on the workpiece. A through hole 14 is provided at the position directly opposite the barcode scanner 13 on the workbench 1. The positioning fixture 2 is provided with a clearance through hole 20. The through hole 14 and the clearance through hole 20 are connected. The scanning end of the barcode scanner 13 passes through the through hole 14 and the clearance through hole 20 to scan the code on the workpiece.

[0026] In the above structure, the upper surface of the workbench 1 is provided with mounting base 15, mounting base 16, and mounting base 17. Sensor 3 is mounted on mounting base 15, sensor 4 is mounted on mounting base 2 16, and sensor 5 is mounted on mounting base 17. Mounting base 17 is provided with an outer cover 171, which is used to cover sensor 5. The outer cover 171 serves to protect sensor 5.

[0027] In the above structure, the upper surface of the workbench 1 is provided with mounting base four 18, mounting base five 19, mounting base six 110, and mounting base seven 111. Sensor four 6 is mounted on mounting base four 18, sensor five 7 is mounted on mounting base five 19, sensor six 8 is mounted on mounting base six 110, and sensor seven 9 is mounted on mounting base seven 111. The workbench 1 is provided with outer cover two 112 and outer cover three 113. Outer cover two 112 is used to cover mounting base four 18 and mounting base five 19, and outer cover three 113 is used to cover mounting base six 110 and mounting base seven 111. Outer cover two 112 serves to protect sensor four 6 and sensor five 7. Outer cover three 113 serves to protect sensor six 8 and sensor seven 9.

[0028] In the above structure, the positioning fixture 2 is equipped with two through-beam photoelectric sensors 21, which are used to detect whether the top cover of the workpiece is assembled in place. The previous process of this mechanism is to assemble two workpieces into one and then place it on this screw-tightening mechanism. One of the parts is the cover plate. If the cover plate is not installed in place, it will bulge out, and the through-beam photoelectric sensor 21 will detect it. If it is not qualified, the cover plate needs to be removed, reinstalled, and then put back on.

[0029] Only when the workpiece is accurately placed in position can the effective tightening of the screws be guaranteed. Therefore, the positioning fixture 2 is equipped with sensor 8 22, which is used to detect whether the head of the workpiece is in position. The positioning fixture 2 is also equipped with sensor 9 23, which is used to detect whether the tail of the workpiece is in position.

[0030] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A sensor-based mechanism for detecting the tightening sequence of axle screws, characterized in that, include: Workbench; A positioning fixture is mounted on a worktable, and the positioning fixture contains a workpiece that needs to be tightened with screws; Sensor 1 is mounted on the workbench and is used to detect whether the positioning fixture is pressing the workpiece that needs to be tightened with screws; Sensor 2 is mounted on the workbench and is used to detect whether the screw tightening gun has reached working position 1. Sensor 3 is mounted on the workbench and is used to detect whether the screw tightening gun has reached working position 2. The workbench is also equipped with sensor four, sensor five, sensor six and sensor seven. The signal detection ends of sensor four, sensor five, sensor six and sensor seven are respectively positioned at the four screw tightening positions of the workpiece. Sensor four, sensor five, sensor six and sensor seven are used to detect whether the sequence of tightening the screws on the workpiece by the tightening gun meets the requirements.

2. The sensor-based axle screw tightening sequence detection mechanism according to claim 1, characterized in that: Four connecting rods are installed on the lower end face of the workbench, and the four connecting rods are connected to a support plate. A barcode scanner is installed on the support plate and is used to scan the code on the workpiece.

3. The sensor-based axle screw tightening sequence detection mechanism according to claim 2, characterized in that: The worktable is provided with a through hole at the position directly opposite the barcode scanner, and the positioning fixture is provided with an avoidance through hole. The through hole and the avoidance through hole are connected, and the scanning end of the barcode scanner passes through the through hole and the avoidance through hole to scan the code on the workpiece.

4. The sensor-based axle screw tightening sequence detection mechanism according to claim 1, characterized in that: The upper surface of the workbench is provided with mounting base one, mounting base two and mounting base three. Sensor one is mounted on mounting base one, sensor two is mounted on mounting base two and sensor three is mounted on mounting base three.

5. The sensor-based axle screw tightening sequence detection mechanism according to claim 4, characterized in that: The mounting base three is provided with an outer cover one, which is used to cover the sensor three.

6. The sensor-based axle screw tightening sequence detection mechanism according to claim 1, characterized in that: The upper surface of the workbench is provided with mounting base four, mounting base five, mounting base six and mounting base seven. Sensor four is mounted on mounting base four, sensor five is mounted on mounting base five, sensor six is ​​mounted on mounting base six and sensor seven is mounted on mounting base seven.

7. The sensor-based axle screw tightening sequence detection mechanism according to claim 6, characterized in that: The workbench is provided with outer cover 2 and outer cover 3. Outer cover 2 is used to cover mounting base 4 and mounting base 5, and outer cover 3 is used to cover mounting base 6 and mounting base 7.

8. The sensor-based axle screw tightening sequence detection mechanism according to claim 1, characterized in that: The positioning fixture is equipped with two through-beam photoelectric sensors, which are used to detect whether the top cover of the workpiece is assembled in place.

9. The sensor-based axle screw tightening sequence detection mechanism according to claim 8, characterized in that: The positioning fixture is equipped with sensor eight, which is used to detect whether the head of the workpiece is in position.

10. The sensor-based axle screw tightening sequence detection mechanism according to claim 9, characterized in that: The positioning fixture is equipped with a sensor nine, which is used to detect whether the tail of the workpiece is in position.

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