Data acquisition device and method for evaluating the dynamic repeated detection ability of tape sizes

Abstract

The present invention discloses a data acquisition device and method for evaluating the dynamic repeated detection ability of strip dimensions, belonging to the technical field of stamping product dimension detection. The data acquisition device includes: a controller, a driving mechanism, a guiding track, an industrial camera, and a photoelectric sensor. Through the present invention, a data acquisition device and an acquisition method for evaluating the dynamic repeated detection ability of strip dimensions are provided. By simulating the dynamic repeated data acquisition during the strip movement process, the repeated detection ability of the device verified by this data is consistent with that during actual production. It greatly improves the authenticity of the actual repeated detection accuracy of the online detection device, solves the problem of distorted acquisition of strip dimension data, can automatically simulate the dynamic detection scenario during strip production, dynamically and repeatedly obtain the dimension data of the same stamping strip product or continuous product data, improves the accuracy of detection deviation, and ensures the repeated detection ability of the device.

Description

Technical Field

[0001] The present invention relates to the field of stamping product size detection, and particularly to a data acquisition device and method for dynamically and repeatedly detecting the data of stamping strip products in the automotive electronics industry. Background Art

[0002] The continuous die stamping of electronic stamping parts refers to a cold stamping die that uses a press in one stamping stroke, adopts strip-shaped stamping raw materials, and simultaneously completes multiple stamping processes at several different stations on a set of dies. Each time the die completes stamping, the strip moves a fixed distance until the product is completed. The continuous die uses coil or strip materials, and it is easy to realize automation for feeding, discharging, and laminating.

[0003] The strip products produced by stamping need to be dimensionally controlled. The traditional method is to randomly select a part of the strip for off-line dimensional inspection after production. This method has the risk that the dimensions of all parts of the strip cannot be guaranteed to be controlled.

[0004] Then, on-line continuous stamping inspection equipment emerged. However, when verifying the repeated detection ability of the equipment, usually the strip is manually moved under the industrial camera of the equipment to take continuous photos, and the repetitive data is calculated after obtaining the data.

[0005] Since the strip is produced in a continuous process, the product dimensions detected by the on-line inspection equipment are completed during the high-speed movement of the strip.

[0006] However, the data for verifying the repeatability of the equipment detection ability is obtained when the strip is stationary. This results in that even though the repeatability test is passed, in the actual production process, the product dimensions actually detected by the on-line inspection equipment are still uncontrollable, and large detection deviations often occur. Summary of the Invention

[0007] In order to solve the problem that the actual production is dynamic detection, but the verification of the repeated detection ability is static, the purpose of the present invention is to provide a data acquisition device and method for evaluating the dynamic repeated detection ability of strip dimensions, which can automatically simulate the dynamic detection scenario during strip production, dynamically and repeatedly obtain the size data of the same stamping strip product or continuous product data, and improve the accuracy of detection deviation.

[0008] The technical problems to be solved by the present invention are achieved by the following technical solutions:

[0009] A data acquisition device for evaluating the dynamic repeated detection ability of strip dimensions, used to evaluate the dynamic repeated detection ability of product dimensions on a strip, includes:

[0010] A controller for controlling a driving mechanism, an industrial camera, and a photoelectric sensor to operate according to a preset program;

[0011] A driving mechanism, controlled by the controller to work, for driving a strip to move back and forth within a guiding track;

[0012] A guiding track for serving as a carrier for the back-and-forth movement of the strip;

[0013] An industrial camera, controlled by the controller to work, including a first industrial camera and a second industrial camera, which are spaced apart and arranged above the guiding track for collecting dimensional data of products on the moving strip;

[0014] A photoelectric sensor, controlled by the controller to work, triggering the industrial camera to take pictures and collect data by detecting the positioning round holes of products on the strip and counting the products on the strip.

[0015] As a preferred example, the driving mechanism includes a driving motor, an upper pressing wheel, and a lower pressing wheel. The driving end of the driving motor is connected to either the upper pressing wheel or the lower pressing wheel. The strip is pressed by the upper pressing wheel and the lower pressing wheel, and the upper pressing wheel or the lower pressing wheel drives the strip to move by generating frictional force through the rotation of the motor.

[0016] As a preferred example, the photoelectric sensor adopts a groove type opposed photoelectric sensor.

[0017] As a preferred example, the data acquisition device includes a bottom plate, a frame, a slide rail, and a slider. The bottom plate is provided with a slide rail, the bottom of the frame is provided with a slider, and the frame and the bottom plate are slidably connected through the slide rail and the slider. The driving mechanism, the guiding track, the industrial camera, and the photoelectric sensor are all installed on the frame.

[0018] As a preferred example, the slide rail provided on the bottom plate is a horizontal slide rail, the bottom of the frame is horizontally slidably connected to the horizontal slide rail through a two-way slider, and the bottom body of the frame is provided with a vertical slide rail, and the frame and the two-way slider are longitudinally slidably connected.

[0019] As a preferred example, the industrial camera is installed on the frame through an adjusting device, and the adjusting device includes a horizontal adjusting mechanism, a vertical adjusting mechanism, and a vertical adjusting mechanism.

[0020] A collection method of a data acquisition device using the above-mentioned ability to dynamically and repeatedly detect the size of a strip, including the following steps:

[0021] Step 1, the controller controls the driving mechanism to drive the strip forward, and the photoelectric sensor triggers the first industrial camera to take pictures for the first time to collect partial dimensional data of product 1 on the strip. When collecting data, the strip is in a moving state;

[0022] Step 2, the controller controls the continuous forward movement of the strip, judges the position of Product 1 through the count of the photoelectric sensor. When Product 1 moves to the photographing position of the second industrial camera, it triggers photographing to collect the remaining dimension data of Product 1. When collecting data, the strip is in a moving state. Thus, one-time data collection of one product on the strip is completed;

[0023] Step 3, after the controller controls the strip to move the interval distance of multiple products, it stops driving the strip to move forward and starts to move the strip in the reverse direction;

[0024] Step 4, the controller controls the strip to move in the reverse direction and monitors the position of Product 1. When Product 1 returns to the photographing position of the first industrial camera, it continues to move one more product interval and then stops the strip. Thus, one-time complete data collection and restoration of the state are completed;

[0025] Step 5, repeat the process of Step 1 to Step 4 multiple times to realize the process of multiple dynamic data collections of the same product.

[0026] As a preferred example, the photoelectric sensor triggers the industrial camera to take pictures and collect data by detecting the positioning round holes on the product.

[0027] The beneficial effects of the present invention are:

[0028] Through the present invention, a data collection device and a collection method for evaluating the dynamic repeated detection ability of strip dimensions are provided, which solves the problem of distorted collection of strip dimension data, can automatically simulate the dynamic detection scenario during strip production, dynamically and repeatedly obtain the dimension data of the same stamping strip product or continuous product data, improve the accuracy of detection deviation, and ensure the repeated detection ability of the equipment. Description of the Drawings

[0029] Figure 1 is the three-dimensional structural schematic diagram of the data collection device of the present invention;

[0030] Figure 2 is the front view structural schematic diagram of the data collection device of the present invention;

[0031] Figure 3 is the three-dimensional structural schematic diagram of the bottom plate of the data collection device of the present invention;

[0032] Figure 4 is the three-dimensional structural schematic diagram of the industrial camera adjustment mechanism of the data collection device of the present invention;

[0033] Figure 5 is the three-dimensional structural schematic diagram of the industrial camera driving mechanism of the data collection device of the present invention;

[0034] Figure 6 is Figure 1 the enlarged structural schematic diagram at A in

[0035] Figure 7 Schematic diagram of the working principle of the circuit module of the data acquisition device of the present invention;

[0036] Figure 8 Flowchart of the acquisition method steps of the data acquisition device using the present invention.

[0037] In the figure:

[0038] 1. Data acquisition device;

[0039] 10. Controller;

[0040] 11. Driving mechanism; 111. Driving motor; 112. Upper pressing wheel; 113. Lower pressing wheel;

[0041] 12. Guide rail;

[0042] 13. First industrial camera;

[0043] 14. Second industrial camera;

[0044] 15. Photoelectric sensor;

[0045] 16. Tape; 161. Positioning round hole;

[0046] 17. Base plate; 171. Horizontal slide rail; 172. Bidirectional slider;

[0047] 18. Frame;

[0048] 19. Adjusting device; 191. Horizontal adjusting mechanism; 1911. Horizontal guide rail; 1912. Horizontal mounting slider; 192. Vertical adjusting mechanism; 1921. Vertical guide rail; 1922. Vertical mounting slider; 193. Vertical adjusting mechanism; 1931. Vertical guide rail; 1932. Vertical sliding bracket. Detailed implementation manners

[0049] In order to make it easy to understand the technical means, creative features, achieved purposes and effects of the present invention, the present invention will be further described below with reference to specific drawings and embodiments.

[0050] As Figure 1 - Figure 2 shown, the present invention provides a data acquisition device for evaluating the dynamic repeated detection ability of the tape size, which is used to evaluate the dynamic repeated detection ability of the product size on the tape.

[0051] Specifically, the data acquisition device 1 includes:

[0052] A controller 10 (not shown), using a PLC controller 10, is used to control the driving mechanism 11, the industrial camera and the photoelectric sensor 15 to operate according to a preset program.

[0053] The driving mechanism 11 is controlled by the controller 10 to drive the strip 16 to move back and forth within the guiding track 12. Specifically, as Figure 5 shown, the driving mechanism 11 includes a driving motor 111, an upper pressing wheel 112, and a lower pressing wheel 113. The driving end of the driving motor 111 is connected to the lower pressing wheel 113. The strip 16 is pressed by the upper pressing wheel 112 and the lower pressing wheel 113. The upper pressing wheel 112 and the lower pressing wheel 113 drive the strip 16 to move by generating frictional force through the rotation of the motor.

[0054] The guiding track 12 is provided with guiding grooves on it and is used as a carrier for the strip 16 to move back and forth;

[0055] The industrial cameras are controlled by the controller 10 and include a first industrial camera 13 and a second industrial camera 14. The two are arranged at intervals above the guiding track 12 and are used to collect the dimensional data of the products on the moving strip 16.

[0056] Preferably, as Figure 4 shown, the industrial cameras are installed on the frame 18 through the adjusting device 19. The adjusting device 19 includes a horizontal adjusting mechanism 191, a vertical adjusting mechanism 192, and a vertical adjusting mechanism 193. Among them, the horizontal adjusting mechanism 191 includes a horizontal guide rail 1911 and a horizontal mounting slider 1912. The vertical adjusting mechanism 192 includes a vertical guide rail 1921 and a vertical mounting slider 1922. The vertical adjusting mechanism 193 includes a vertical guide rail 1931 and a vertical sliding bracket 1932. The vertical guide rail 1921 is installed on the side of the frame 18. The vertical mounting slider 1922 is slidably connected to the vertical guide rail 1921. The horizontal guide rail 1911 is installed on the vertical mounting slider 1922. The horizontal mounting slider 1912 is slidably connected to the horizontal guide rail 1911. The vertical guide rail 1931 is installed on the horizontal mounting slider 1912. The vertical sliding bracket 1932 is slidably connected to the vertical guide rail 1931. The industrial cameras are respectively installed on the vertical sliding brackets 1932. Installing the industrial cameras on the frame 18 through the adjusting device 19 can meet the dimensional measurement requirements of different strip 16 products.

[0057] The photoelectric sensor 15 uses a slot-type opposed photoelectric sensor 15 and is controlled by the controller 10. The photoelectric sensor 15 detects the positioning round holes 161 of the products on the strip 16 to trigger the industrial cameras to take pictures and collect data and count the products on the strip 16.

[0058] The data acquisition device 1 installation frame is used to carry and install the above-mentioned various mechanisms, including a bottom plate 17, a frame 18, a slide rail, and a slider. A slide rail is provided on the bottom plate 17, and a slider is provided at the bottom of the frame 18. The frame 18 and the bottom plate 17 are slidably connected through the slide rail and the slider. The driving mechanism 11, the guiding track 12, the industrial camera, and the photoelectric sensor 15 are all installed on the frame 18.

[0059] Preferably, as Figure 3 shown, the slide rail provided on the bottom plate 17 is a horizontal slide rail 171. A bidirectional slider 172 is installed on the horizontal slide rail 171. The bottom of the bidirectional slider 172 is horizontally slidably connected to the horizontal guide rail 1911. A longitudinal slide rail is provided on the bottom body of the frame 18, and the longitudinal slide rail at the bottom of the frame 18 is longitudinally slidably connected to the top of the bidirectional slider 172.

[0060] As Figure 7 - Figure 8 shown, a data acquisition method of the data acquisition device 1 that adopts the above-mentioned ability to dynamically and repeatedly detect the size of the evaluation tape 16 includes the following steps:

[0061] Step 1, the controller 10 controls the driving mechanism 11 to drive the tape 16 forward, and the first industrial camera 13 is triggered by the photoelectric sensor 15 to take pictures and collect partial size data of product one on the tape 16. When collecting data, the tape 16 is in a moving state.

[0062] Step 2, the controller 10 controls the tape 16 to continue moving forward, and judges the position of product one by counting through the photoelectric sensor 15. When product one moves to the photographing position of the second industrial camera 14, it triggers photographing to collect the remaining size data of product one. When collecting data, the tape 16 is in a moving state. Thus, one-time data collection of one product on the tape 16 is completed.

[0063] Step 3, the controller 10 controls the tape 16 to move the interval distance of multiple products, then stops driving the tape 16 forward, and starts to move the tape 16 in the reverse direction.

[0064] Step 4, the controller 10 controls the tape 16 to move in the reverse direction and monitors the position of one of the products, that is, product one. When product one returns to the photographing position of the first industrial camera 13, it continues to move one more product interval, and then stops the tape 16. Thus, one-time complete data collection and recovery state are completed.

[0065] Step 5, repeatedly repeat the process of Step 1 to Step 4 multiple times to realize the process of multiple dynamic data collection of the same product.

[0066] Preferably, as Figure 6 shown, the photoelectric sensor 15 triggers the industrial camera to take pictures and collect data by detecting the positioning round hole 161 on the product.

[0067] Existing static data collection:

[0068] In the prior art, the data for verifying the repeatability of the device detection ability is obtained when the tape 16 is stationary, that is, the size data of the products on the stationary tape 16 is directly obtained by using an industrial camera to take pictures of the products.

[0069] Comparative example 1:

[0070] Twelve electronic stamping parts products a on the tape 16A are intercepted, and the static size of each product a is measured in turn by an industrial camera. The standard size of the product a is 2.45 cm, and the size error of each product a during production is within ±0.05 cm.

[0071] Comparative example 2:

[0072] Twelve electronic stamping parts products b on the tape 16B are intercepted, and the static size of each product b is measured in turn by an industrial camera. The standard size of the product b is 3.31 cm, and the size error of each product b during production is within ±0.07 cm.

[0073] Comparative example 3:

[0074] Twelve electronic stamping parts products c on the tape 16C are intercepted, and the static size of each product c is measured in turn by an industrial camera. The standard size of the product c is 1.00 cm, and the size error of each product c during production is within -0.03 to 0.06 cm.

[0075] Dynamic data collection of the present invention:

[0076] The data collection device 1 and the collection method of the present invention are used to collect the product size data during the movement of the tape 16.

[0077] Example 1:

[0078] Still using the twelve electronic stamping parts products a on the tape 16A in Comparative Example 1, the size of each product a is measured in turn by the data collection device 1 and the collection method of the present invention. The standard size of the product a is 2.45 cm, and the size error of each product a during production is within ±0.05 cm.

[0079] Example 2:

[0080] Still using the twelve electronic stamping parts products b on the tape 16B in Comparative Example 2, the size of each product b is measured in turn by the data collection device 1 and the collection method of the present invention. The standard size of the product b is 3.31 cm, and the size error of each product b during production is within ±0.07 cm.

[0081] Example 3:

[0082] Still use the twelve electronic stamping parts products c on the strip 16C in Comparative Example 3, and measure the size of each product c in turn through the data acquisition device 1 and the acquisition method of the present invention. The standard size of the product c is 1.00 cm, and the size error of each product c during production is between -0.03 and 0.06 cm.

[0083] Experimental principle of the present invention:

[0084] Preparation work: Insert the strip 16 into the guiding groove of the guiding track 12, set the parameter of the number of times of repeatedly collecting data through the controller 10, and start the acquisition control program.

[0085] The working principles of each mechanism are as follows:

[0086] The driving mechanism ******** presses the strip 16 through the pressure between the upper pressing wheel 112 and the lower pressing wheel 113, and the lower pressing wheel 113 drives the strip 16 to move forward by generating frictional force through the rotation of the driving motor 111.

[0087] During the forward movement of the strip 16, the positioning round hole 161 of the product is detected by the grooved opposed photoelectric sensor 15 to trigger the industrial camera to take pictures and collect data.

[0088] The distance between the industrial cameras: Each product triggers the grooved optical fiber once. Through the distance between the products on the strip 16, the distance between the two industrial cameras can be virtualized as a multiple of the product pitch of the strip 16. In this way, the current position of the products detected in the strip 16 can be confirmed by the optical fiber trigger count.

[0089] The test results are shown in Table 1 below:

[0090]

[0091] Table 1

[0092] Analysis of test data:

[0093] In Comparative Example 1, static data of twelve products a on the strip 16A were collected, and the measurement deviation between the maximum and minimum measured sizes was 0.006 cm;

[0094] In Example 1, dynamic data of twelve products a on the strip 16A were collected, and the measurement deviation between the maximum and minimum measured sizes was 0.007 cm;

[0095] In Comparative Example 2, static data of twelve products b on the strip 16B were collected, and the measurement deviation between the maximum and minimum measured sizes was 0.005 cm;

[0096] It should be noted that there is an unclear part in the original text at "The driving mechanism ******** presses the strip 16 through the pressure between the upper pressing wheel 112 and the lower pressing wheel 113", where "********" is an unclear expression. This translation is based on the existing text as much as possible.In Example 2, dynamic data collection was performed on twelve products b on the strip 16B, and the measurement deviation between the maximum and minimum measured dimensions was 0.005 cm;

[0097] In Comparative Example 3, static data collection was performed on twelve products c on the strip 16C, and the measurement deviation between the maximum and minimum measured dimensions was 0.007 cm;

[0098] In Example 3, dynamic data collection was performed on twelve products c on the strip 16C, and the measurement deviation between the maximum and minimum measured dimensions was 0.004 cm.

[0099] Through the comparative analysis of the above measurement data, in the prior art, the error between the size data of the product collected statically by the industrial camera and the data collected by the data collection device 1 and the collection method of the present invention during the movement of the strip 16 is almost negligible and can be almost ignored. Therefore, the technical solution of the present invention can not only achieve the accurate collection of the product size data, solve the problem of distorted collection of the strip 16 size data, but also automatically simulate the dynamic detection scenario during the production of the strip 16, dynamically and repeatedly obtain the size data of the same stamping strip 16 product or continuous product data, improve the accuracy of the detection deviation, and ensure the repeatability detection ability of the equipment.

[0100] The preferred specific embodiments of the present invention have been described in detail above. It should be understood that those of ordinary skill in the art can make many modifications and variations based on the concept of the present invention without creative labor. Therefore, all technical solutions that can be obtained by those skilled in the art in the technical field of the present invention based on the concept of the present invention through logical analysis, reasoning or limited experiments on the basis of the prior art should be within the protection scope determined by the claims.

Claims

1. A data acquisition device for evaluating the dynamic repetitive detection ability of the tape size, which is used to evaluate the dynamic repetitive detection ability of the product size on the tape (16), and is characterized in that, Including: A controller (10) for controlling a driving mechanism (11), an industrial camera, and a photoelectric sensor (15) to operate according to a preset program; The driving mechanism (11) is controlled by the controller (10) to work, and is used to drive the strip (16) to move back and forth in the guiding track (12). The driving mechanism (11) includes a driving motor (111), an upper pressing wheel (112), and a lower pressing wheel (113). The driving end of the driving motor (111) is connected to either the upper pressing wheel (112) or the lower pressing wheel (113). The strip (16) is pressed by the upper pressing wheel (112) and the lower pressing wheel (113), and the upper pressing wheel (112) or the lower pressing wheel (113) drives the strip (16) to move by generating friction through the rotation of the motor; The guiding track (12) is provided with guiding grooves on it and is used as a carrier for the strip (16) to move back and forth; The industrial camera is controlled by the controller (10) to work, and includes a first industrial camera (13) and a second industrial camera (14). The two are arranged at intervals above the guiding track (12) and are used to collect the size data of the products on the moving strip (16); The photoelectric sensor (15) is controlled by the controller (10) to work. By detecting the positioning round hole (161) of the product on the strip (16) through the photoelectric sensor (15), it triggers the industrial camera to take pictures and collect data, and counts the products on the strip (16).

2. The data acquisition device for evaluating the dynamic repeated detection ability of the tape size according to claim 1, wherein The photoelectric sensor (15) adopts a slot-type opposed photoelectric sensor (15).

3. The data acquisition device for evaluating the dynamic repeated detection ability of the tape size according to claim 1, wherein The data acquisition device (1) includes a bottom plate (17), a frame (18), a slide rail, and a slider. The bottom plate (17) is provided with a slide rail, and the bottom of the frame (18) is provided with a slider. The frame (18) and the bottom plate (17) are slidably connected through the slide rail and the slider. The driving mechanism (11), the guiding track (12), the industrial camera, and the photoelectric sensor (15) are all installed on the frame (18).

4. The data acquisition device for evaluating the dynamic repeated detection ability of the tape size according to claim 3, wherein The slide rail provided on the bottom plate (17) is a horizontal slide rail (171). The bottom of the frame (18) is horizontally slidably connected to the horizontal slide rail (171) through a two-way slider (172). The bottom body of the frame (18) is provided with a vertical slide rail, and the frame (18) and the two-way slider (172) are longitudinally slidably connected.

5. The data acquisition device for evaluating the dynamic repeated detection ability of the tape size according to claim 3, characterized in that The industrial camera is installed on the frame (18) through an adjusting device (19). The adjusting device (19) includes a horizontal adjusting mechanism (191), a vertical adjusting mechanism (192), and a vertical adjusting mechanism (193).

6. A data acquisition method of a data acquisition device for evaluating the dynamic repeated detection ability of the size of a material tape according to any one of claims 1-5, characterized in that, Including the following steps: Step 1, the controller (10) controls the driving mechanism (11) to drive the strip (16) forward, and the photoelectric sensor (15) triggers the first industrial camera (13) to take pictures for the first time to collect part of the size data of product one on the strip (16). When collecting data, the strip (16) is in a moving state; Step 2, the controller (10) controls the continuous forward movement of the strip (16), determines the location of Product 1 by counting through the photoelectric sensor (15). When Product 1 moves to the photographing position of the second industrial camera (14), it triggers photographing to collect the remaining dimension data of Product 1. The strip (16) is in a moving state during data collection. Thus, one-time data collection of one product on the strip (16) is completed; Step 3, the controller (10) controls the strip (16) to move the interval distance of multiple products, then stops driving the strip (16) to move forward and starts to move the strip (16) in reverse; Step 4, the controller (10) controls the strip (16) to move in reverse and monitors the position of Product 1. When Product 1 returns to the photographing position of the first industrial camera (13), it continues to move one more product spacing and then stops the strip (16). Thus, one-time completed data collection and restoration of the state are completed; Step 5, repeat the process of Step 1 to Step 4 multiple times to realize the process of multiple dynamic data collections of the same product.

7. The acquisition method of the data acquisition device for evaluating the dynamic repeated detection ability of the material tape size according to claim 6, characterized in that, The photoelectric sensor (15) triggers the industrial camera to take pictures and collect data by detecting the positioning round holes (161) on the product.

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