Automatic detection device for small thrust spring

Abstract

The utility model discloses an automatic detection device for a thrust small spring, which comprises a disc feeder, a code spraying mechanism, an automatic mechanical arm, a press machine and a spring height measuring mechanism, the discharge end of the disc feeder is provided with a traction passage, and the small spring is in feeding fit with the traction passage through the disc feeder. A code spraying mechanism is arranged on one side of the traction passage, the output end of the code spraying mechanism faces the small spring, a moving frame is arranged at the tail end of the traction passage, a linear moving platform is movably arranged on the moving frame, an automatic mechanical arm is arranged on one side of the moving frame, and the small spring of the traction passage is matched with the linear moving platform in a feeding mode through the automatic mechanical arm. A press machine is arranged on the side, close to the traction passage, of the movable frame, a spring height measuring mechanism is arranged on the side, away from the traction passage, of the movable frame, detection is convenient, and automatic sorting is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of hydropower generation, in particular to an automatic detection device for small thrust springs. Background Technique

[0002] The small thrust spring is a support component of the thrust bearing of the Dongdian hydro-generating unit. There are thousands of small springs in one unit. Each time during maintenance, they need to be cleaned, polished, and inspected one by one, and the work is rather cumbersome. In order to clarify the horizontal deflection of each thrust bearing, it is required to focus on the height of the small springs at each position. Currently, an external micrometer, vernier caliper, or dial indicator is used to measure the height of one circle of each small spring separately, and the maximum value and minimum value are recorded.

[0003] When using a dial indicator to measure the deviation of each small spring from the standard value, this method is the fastest, but it still takes at least one week to complete under the condition of simultaneous measurement of two groups. To ensure the measurement accuracy, the base where the small spring is located is selected as the absolute plane, and at the same time, the small spring is manually rotated one circle to obtain the height change range. The measurement personnel have to read the continuously changing pointer readings thousands of times in the narrow oil tank, and at the same time, it is easy to slip and collide with the dial head during the process of manually rotating the small spring, resulting in re-calibration of the measurement reference. These problems make it impossible to ensure both the measurement efficiency and accuracy at the same time. Summary of the Utility Model

[0004] The utility model provides an automatic detection device for small thrust springs, aiming to solve the limitations in the existing detection of small thrust springs so as to simultaneously meet the accuracy and efficiency of detection.

[0005] To solve the above technical problems, the technical solution adopted by the utility model is:

[0006] An automatic detection device for small thrust springs includes a disk feeder, a coding mechanism, an automated robotic arm, a press, and a spring height measurement mechanism. A traction aisle is provided at the discharge end of the disk feeder. The small springs form a feeding cooperation through the disk feeder and the traction aisle. A coding mechanism is provided on one side of the traction aisle, and the output end of the coding mechanism faces the small springs. A moving frame is provided at the end of the traction aisle. A linear moving platform is movably provided on the moving frame. An automated robotic arm is provided on one side of the moving frame. The small springs on the traction aisle form a loading cooperation with the linear moving platform through the automated robotic arm. A press is provided on the side of the moving frame close to the traction aisle, and a spring height measurement mechanism is provided on the side of the moving frame far from the traction aisle.

[0007] A limiting slot is provided at the central position of the linear moving platform, and the small spring forms a limiting cooperation with the limiting slot.

[0008] The linear moving platform forms a linear sliding fit with the moving frame through a lead screw and a limit rod. A stepping motor is provided on one side of the moving frame, and the output shaft of the stepping motor is coaxially linked with the screw of the lead screw.

[0009] A limit switch is provided on the side of the moving frame close to the spring height measuring mechanism. The limit switch corresponds to the spring height measuring mechanism. The limit switch forms an induction fit with the linear moving platform. The stepping motor forms a braking fit with the limit switch through an external control mechanism. The detection end of the spring height measuring mechanism contacts the top of the small spring on the linear moving platform.

[0010] The linear moving platform is initially braked on the side close to the traction aisle and is located directly below the press. The output end of the press forms a pressing fit with the small spring on the linear moving platform.

[0011] Both the press and the spring height measuring mechanism are linked with the automated robotic arm through an external control mechanism. A defective small spring storage box is provided on one side of the automated robotic arm, and a qualified small spring storage box is provided on the other side of the automated robotic arm.

[0012] The sensing end and the output end of the press are integrated, and the sensing end of the press forms an induction fit with the small spring on the linear moving platform.

[0013] The spring height measuring mechanism is an electronic dial indicator height measuring device. The sensing end of the electronic dial indicator height measuring device forms an induction fit with the small spring on the linear moving platform.

[0014] Advantages of the present utility model:

[0015] (1) Rich in functions. The small thrust spring detection device can realize sorting and numbering, force inspection and height measurement, and has broad expandability;

[0016] (2) High degree of automation and high work efficiency. The whole detection process is automatic, including automatic numbering, automatic feeding, automatic reading and automatic classification, effectively shortening the detection time;

[0017] (3) High data reliability and good stability, reducing human factors and avoiding errors caused by different personnel rotating readings. Description of the Drawings

[0018] Figure 1 It is a three-dimensional schematic diagram of the front side view of one side of the present utility model;

[0019] Figure 2 It is a three-dimensional schematic diagram of the rear side view of one side of the present utility model;

[0020] Figure 3 It is a three-dimensional schematic diagram of the front side view of the other side of the present utility model;

[0021] In the figure: 1. Disc feeder; 2. Traction aisle; 3. Automatic robotic arm; 4. Moving frame; 5. Linear moving platform; 6. Press; 7. Spring height measuring mechanism; 8. Lead screw; 9. Limit rod; 10. Stepper motor; 11. Defective small spring storage box; 12. Qualified small spring storage box; 13. Inkjet coding mechanism; 14. Limit switch; 15. Limit groove. Specific implementation mode

[0022] As follows, the embodiments will be further described with reference to the accompanying drawings.

[0023] As Figures 1 to 3 shown, as a preferred Embodiment 1, a thrust small spring automatic detection device includes a disc feeder 1, an inkjet coding mechanism 13, an automatic robotic arm 3, a press 6 and a spring height measuring mechanism 7. A traction aisle 2 is provided at the discharge end of the disc feeder 1. The small spring forms a feeding cooperation through the disc feeder 1 and the traction aisle 2. An inkjet coding mechanism 13 is provided on one side of the traction aisle 2, and the output end of the inkjet coding mechanism 13 faces the small spring. A moving frame 4 is provided at the end of the traction aisle 2. A linear moving platform 5 is movably provided on the moving frame 4. An automatic robotic arm 3 is provided on one side of the moving frame 4. The small spring on the traction aisle 2 forms a loading cooperation through the automatic robotic arm 3 and the linear moving platform 5. A press 6 is provided on the side of the moving frame 4 close to the traction aisle 2, and a spring height measuring mechanism 7 is provided on the side of the moving frame 4 away from the traction aisle 2.

[0024] Embodiment 1 provides a thrust small spring automatic detection device, which relies on the disc feeder 1 to perform feeding cooperation on the traction aisle 2. When the small spring passes through the traction aisle 2, it is inkjet coded by the inkjet coding mechanism 13. The small spring at the end of the traction aisle 2 is loaded through the automatic robotic arm 3 and transferred to the linear moving platform 5 at the initial position. First, a force detection is performed through the press 6. If the detection is qualified, the linear moving platform 5 continues to move on the moving frame 4, stops at the spring height measuring mechanism 7, and a height detection is performed. After the detection is qualified, it is transferred to a collection device through the automatic robotic arm 3. When any of the two steps is unqualified midway, it is transferred to another collection device through the automatic robotic arm 3.

[0025] As a preferred Embodiment 2, the traction aisle 2 includes an arc part concentric and coaxial with the disc and a straight part tangent to the arc part. The small spring first enters the arc part under the drive of the disc and then enters the straight part from the arc part.

[0026] As a preferred Embodiment 3, a limit groove 15 is provided at the central position of the linear moving platform 5, and the small spring forms a limit cooperation with the limit groove 15. Ensure the stable installation of the small spring during detection and movement.

[0027] As a preferred embodiment 4, the linear moving platform 5 forms a screw linear sliding fit with the moving frame 4 through a lead screw 8 and a limit rod 9. A stepping motor 10 is provided on one side of the moving frame 4, and the output shaft of the stepping motor 10 is coaxially linked with the screw of the lead screw 8 to convert rotational motion into linear motion.

[0028] The lead screw 8 is located in the middle position, the limit rods 9 are located on both sides of the lead screw 8, and the limit rods 9 are all parallel to the lead screw 8 and symmetrically arranged with respect to the lead screw 8.

[0029] As a preferred embodiment 5, a limit switch 14 is provided on the side of the moving frame 4 close to the spring height measuring mechanism 7. The limit switch 14 corresponds to the spring height measuring mechanism 7, and the limit switch 14 forms an induction fit with the linear moving platform 5. The stepping motor 10 forms a braking fit with the limit switch 14 through an external control mechanism. The detection end of the spring height measuring mechanism 7 contacts the top of the small spring on the linear moving platform 5. This facilitates height detection. When the linear moving platform 5 moves to the set position, it directly stops moving, and the spring height measuring mechanism 7 exactly detects the overall height of the small spring.

[0030] As a preferred embodiment 6, the linear moving platform 5 is initially braked on the side close to the traction aisle 2 and is located directly below the press 6. The output end of the press 6 forms a downward pressing fit with the small spring on the linear moving platform 5, which facilitates initial feeding and force detection.

[0031] As a preferred embodiment 7, both the press 6 and the spring height measuring mechanism 7 form a linkage fit with the automated robotic arm 3 through an external control mechanism. A defective small spring storage box 11 is provided on one side of the automated robotic arm 3, and a qualified small spring storage box 12 is provided on the other side of the automated robotic arm 3.

[0032] This facilitates automation. By monitoring the force detection results through the press 6 and the height stability through the spring height measuring mechanism 7, when any one is unqualified, the automated robotic arm 3 takes out the small spring and puts it into the defective small spring storage box 11, and when both detections are qualified, the small spring is taken out and put into the qualified small spring storage box 12.

[0033] As a preferred embodiment 8, the sensing end and the output end of the press 6 are integrated, and the sensing end of the press 6 forms an induction fit with the small spring on the linear moving platform 5. This gives a fixed quota of pressure through downward pressing and facilitates real-time monitoring of the force detection results.

[0034] As a preferred embodiment 9, the spring height measuring mechanism 7 is an electronic dial indicator height measuring device. The sensing end of the electronic dial indicator height measuring device forms an induction fit with the small spring on the linear moving platform 5. This is prior art.

[0035] The device includes a mounting bracket. The mounting bracket is detachably installed with an electronic dial indicator, and the sensing end of the electronic dial indicator is vertically downward. The electronic dial indicator forms a linkage cooperation with a small motor through the mounting bracket and a linkage member. Driven by the small motor, the electronic dial indicator rotates one week on the cover plate at the top of the small spring around the axis of the small spring. By comparing the walking path with the walking path of the standard spring part, if it is within the error range, it is qualified. This is the prior art.

[0036] As a preferred embodiment, the disk feeder 1 can be selected as XB-LP12, the inkjet printing mechanism 13 can be selected as a carbon dioxide laser inkjet printer, the automated robotic arm 3 can be selected as E05Li, the press 6 can be selected as a PFH series cylinder booster, the spring height measuring mechanism 7 can be selected as a height measuring instrument carrying an electronic dial indicator of 543-782B, and the external control mechanism can be selected as a computer.

[0037] The working principle of the present invention:

[0038] It includes the following steps:

[0039] (1) Sorting and numbering. Place the polished and cleaned small springs on the disk feeder 1, convey them through the disk to the traction aisle 2, and gradually accumulate in the aisle. The subsequent small springs will push the previous small springs inward until they pass through the inkjet printing mechanism 13 to be inkjet printed and numbered, and record the corresponding relationship between the spring arrangement and the number.

[0040] (2) Quality inspection, which is divided into force inspection and height measurement. The content of the force inspection includes that when the small spring is conveyed to the end of the traction aisle 2, the automated robotic arm 3 places the small spring at the center of the linear moving platform 5 to form a limit fit with the limit groove 15, and then the press 6 starts to work, applying the load of the actual operation of the unit, and monitoring the returned force in real time. If it is monitored that the small spring cannot rebound or even cracks, the automated robotic arm 3 will send it into the defective small spring storage box 11. The small springs that pass the force inspection will proceed to the next step.

[0041] (3) The content of the height measurement includes adjusting the electronic dial indicator to an appropriate height through the small motor of the spring height measuring mechanism 7, keeping the dial indicator at the same height to measure the elevation of the small spring. The height difference between different small springs is within 20 channels, and the elevation measurement is within the range of the measuring range. In order to ensure the contact between the dial indicator and the small spring, a standard part is used to set the height and check the measurement accuracy, so that the initial value of the dial indicator is half of the total measuring range, making the measured value fluctuate around half of the total measuring range. After the small spring is conveyed to directly below the electronic dial indicator, it stops. The small motor drives the electronic dial indicator to rotate one week. The rotation position of the dial indicator can be determined by adjusting the dial frame. Automatically record the maximum and minimum values of the data and correspond them to the small spring number. Finally, the gripping device sends the small spring into the qualified small spring storage box 12.

Claims

1. An automatic detection device for a small thrust spring, comprising a disk feeder (1), a coding mechanism (13), an automated robotic arm (3), a press (6) and a spring height measuring mechanism (7), characterized in that, The discharging end of the disk feeder (1) is provided with a traction aisle (2). The small spring forms a feeding cooperation with the traction aisle (2) through the disk feeder (1). One side of the traction aisle (2) is provided with a coding mechanism (13), and the output end of the coding mechanism (13) faces the small spring. The end of the traction aisle (2) is provided with a moving frame (4). A linear moving platform (5) is movably arranged on the moving frame (4). An automated robotic arm (3) is arranged on one side of the moving frame (4). The small spring on the traction aisle (2) forms a loading cooperation with the linear moving platform (5) through the automated robotic arm (3). A press (6) is arranged on the side of the moving frame (4) close to the traction aisle (2), and a spring height measuring mechanism (7) is arranged on the side of the moving frame (4) away from the traction aisle (2).

2. The automatic detection device for a small thrust spring according to claim 1, wherein A limiting groove (15) is arranged at the central position of the linear moving platform (5), and the small spring forms a limiting cooperation with the limiting groove (15).

3. The automatic detection device for a small thrust spring according to claim 2, characterized in that, The linear moving platform (5) forms a screw linear sliding cooperation with the moving frame (4) through a lead screw (8) and a limiting rod (9). A stepping motor (10) is arranged on one side of the moving frame (4), and the output shaft of the stepping motor (10) is coaxially linked with the screw rod of the lead screw (8).

4. The automatic detection device for a small thrust spring according to claim 3, wherein, A limit switch (14) is arranged on the side of the moving frame (4) close to the spring height measuring mechanism (7). The limit switch (14) corresponds to the spring height measuring mechanism (7). The limit switch (14) forms an induction cooperation with the linear moving platform (5). The stepping motor (10) forms a braking cooperation with the limit switch (14) through an external control mechanism. The detection end of the spring height measuring mechanism (7) contacts the top of the small spring on the linear moving platform (5).

5. The automatic detection device for a small thrust spring according to claim 4, characterized in that, The linear moving platform (5) is initially braked on the side close to the traction aisle (2) and is located directly below the press (6). The output end of the press (6) forms a pressing cooperation with the small spring on the linear moving platform (5).

6. The automatic detection device for a small thrust spring according to claim 5, characterized in that, Both the press (6) and the spring height measuring mechanism (7) form a linkage cooperation with the automated robotic arm (3) through an external control mechanism. A defective small spring storage box (11) is arranged on one side of the automated robotic arm (3), and a qualified small spring storage box (12) is arranged on the other side of the automated robotic arm (3).

7. The automatic detection device for a small thrust spring according to claim 6, wherein The sensing end and the output end of the press (6) are integrated, and the sensing end of the press (6) forms a sensing cooperation with the small spring on the linear moving platform (5).

8. An automatic detection device for a small thrust spring according to claim 7, characterized in that, The spring height measuring mechanism (7) is an electronic dial indicator height measuring device, and the sensing end of the electronic dial indicator height measuring device forms a sensing cooperation with the small spring on the linear moving platform (5).

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