A cylinder head valve height detection method and control system with infrared scanning

Abstract

The present invention discloses a cylinder head valve height detection method with infrared scanning, which relates to the technical field of engine cylinder head detection and solves the technical problems of inaccurate valve height measurement and large error in the prior art. The method comprises: moving a cylinder head equipped with valves to a detection area, and detecting the valves on the cylinder head to obtain a detection result; comparing the detection result with a set parameter to obtain a comparison result, and processing the cylinder head according to the comparison result. The present invention also discloses a cylinder head valve height detection control system with infrared scanning. The present invention effectively improves the measurement accuracy of the valve height, and the measurement error is small. At the same time, it also greatly reduces the labor intensity of the assembly personnel and effectively improves the safe operation coefficient of the equipment.

Description

Technical Field

[0001] The invention relates to the technical field of engine cylinder head detection, and more specifically, to a cylinder head valve height detection method and control system with infrared scanning. Background Art

[0002] The assembly of the cylinder head of a large engine is completed on the production line. When installing the valve of the cylinder head, the conventional practice is to use a lifting device to hook the cylinder head up and down, and then install the valve manually. After the valve is installed, its height needs to be measured. At present, the measurement of the valve height is also done manually. It is difficult to measure accurate data through manual measurement, and the error between the measured data is large; and when measuring the valve height, if the operation is improper, it is easy for the valve to fall into the cylinder head body, which further leads to inaccurate measurement data and large errors before and after. In addition, during the measurement process, it is not easy to detect the inaccurate installation position of the valve in time, and even the phenomenon of missing or wrong installation still exists. These phenomena make the product quality hidden dangers great. If they are not discovered and handled in time, they will cause a series of quality accidents, greatly reducing production efficiency. Summary of the invention

[0003] The technical problem to be solved by the present invention is to address the deficiencies in the prior art. One purpose of the present invention is to provide a cylinder head valve height detection method with infrared scanning, which can measure the valve height accurately with small errors.

[0004] The second purpose of the present invention is to provide a cylinder head valve height detection and control system with infrared scanning, which can measure the valve height accurately with small error.

[0005] To achieve the above-mentioned first objective, the present invention provides a cylinder head valve height detection method with infrared scanning, comprising the following steps:

[0006] Step 1: moving the cylinder head equipped with the valve to the detection area, and detecting the valve on the cylinder head to obtain a detection result;

[0007] Step 2: Compare the detection result with the set parameters to obtain a comparison result, and process the cylinder head according to the comparison result.

[0008] As a further improvement, the processing of the cylinder head according to the comparison result includes:

[0009] If the comparison result meets the requirement, the cylinder head is reset and the detection ends;

[0010] If the comparison result does not meet the requirements, a report is made that the comparison result does not meet the requirements, and the cylinder head is moved to an assembly area, and the valve is adjusted according to the comparison result, and then steps one and two are repeated until the comparison result meets the requirements.

[0011] Furthermore, the report comparison result does not meet the requirements, including: displaying erroneous data in the comparison result.

[0012] Furthermore, it specifically includes:

[0013] S1, conveying the cylinder head to a predetermined workstation, lifting the cylinder head to an assembly area, and simultaneously turning the cylinder head clockwise so that the position of the cylinder head is convenient for assembling the valve, and assembling the valve on the cylinder head;

[0014] S2. After confirming that the assembly is completed, the cylinder head with the valve assembled thereon is turned clockwise to a set position so that the valve can be detected, and the cylinder head is lifted to the detection area;

[0015] S3, detecting the height of the valve by an infrared scanner, comparing the detection result with a set parameter by a monitoring device, and processing the cylinder head according to the comparison result;

[0016] S4. When the comparison result meets the requirements, the cylinder head is turned counterclockwise to the initial position, and the cylinder head is lowered to a predetermined position, and the detection is completed;

[0017] When the comparison result does not meet the requirements, the monitoring device displays the erroneous data in the comparison result, moves the cylinder head to the assembly area for adjustment, and repeats S1-S3 until the comparison result meets the requirements.

[0018] To achieve the above-mentioned second purpose, the present invention provides a cylinder head valve height detection and control system with infrared scanning, including a roller belt, a lifting mechanism and a crossbeam, wherein the lifting mechanism is installed on the crossbeam, and the roller belt is located below the lifting mechanism. It also includes a detection device and a monitoring device, wherein the detection device is located on one side of the lifting mechanism, and the detection device is electrically connected to the detection device; the detection device includes multiple infrared scanners, which pass through the crossbeam and are installed on the crossbeam, and the infrared scanner is electrically connected to the monitoring device.

[0019] As a further improvement, the detection device includes three infrared scanners, and the infrared scanners are installed on the beam at equal distances.

[0020] Furthermore, the infrared scanner is installed on the crossbeam through a mounting frame, and a protective box penetrating the crossbeam is also provided on the mounting frame, and a scanning end of the infrared scanner is located in the protective box.

[0021] Furthermore, the installation frame and the protective box are an integrated structure.

[0022] Furthermore, the monitoring device includes a PLC controller and an HMI panel, the PLC controller is electrically connected to the infrared scanner, and the PLC controller is also electrically connected to the HMI panel.

[0023] Furthermore, a bearing device is provided between the cylinder cover and the roller belt.

[0024] Beneficial Effects

[0025] The advantages of the present invention are: the cylinder head with the valve installed is lifted to the detection area by the lifting mechanism, and the height of the valve is automatically detected by the detection device, and the automatic detection of the valve is realized by the analysis and processing of the detection result by the monitoring device. In addition, the present invention has high measurement accuracy and small error for the valve height, which effectively solves the problem that the valve height is measured manually, resulting in inaccurate measurement data and large errors before and after. At the same time, it also greatly reduces the labor intensity of the assembly personnel and effectively improves the safety operation coefficient of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 A block diagram of the operation process of the present invention is shown in FIG.

[0027] Figure 2 It is a structural schematic diagram of the present invention;

[0028] Figure 3 It is a schematic diagram of the installation frame structure of the present invention.

[0029] Among them: 1-cylinder head, 2-valve, 3-infrared scanner, 4-roller belt, 5-lifting mechanism, 6-carrying tray, 7-crossbeam, 8-installation frame, 9-protective box. DETAILED DESCRIPTION

[0030] The present invention will be further described below in conjunction with the embodiments, but it does not constitute any limitation to the present invention. Any limited number of modifications made by anyone within the scope of the claims of the present invention are still within the scope of the claims of the present invention.

[0031] A cylinder head valve height detection method with infrared scanning of the present invention comprises the following steps:

[0032] Step 1: Move the cylinder head 1 equipped with the valve 2 to the detection area, and detect the valve 2 on the cylinder head 1 to obtain the detection result. Specifically, the height of the valve 2 on the cylinder head 1 is detected by a detection device to obtain the detection result. Among them, the detection device is an infrared scanner 3, and the height of the valve 2 is detected by the infrared scanner 3. In order to effectively detect the height of the valve 2, the valve 2 needs to be perpendicular to the scanning end of the infrared scanner 3. Therefore, in this embodiment, when the cylinder head 1 is in this set position, the valve 2 is perpendicular to the scanning end of the infrared scanner 3. The height of the valve 2 is automatically detected by the infrared scanner 3, which effectively avoids the problems existing in the manual detection used in the prior art, and also reduces the labor intensity of the assembler.

[0033] Step 2: Compare the test result with the set parameters to obtain a comparison result, and process the cylinder head 1 according to the comparison result. In this step, the cylinder head 1 is processed according to the comparison result, including the processing of the comparison result meeting the requirements and the comparison result not meeting the requirements. Among them, the comparison result meets the requirements, that is, the test result is consistent with the set parameters, the cylinder head 1 is reset, and the detection ends. If the comparison result does not meet the requirements, that is, the test result is inconsistent with the set parameters, the comparison result is reported to be not meeting the requirements. In this embodiment, the report that the comparison result does not meet the requirements is specifically to display the wrong data in the comparison result, so that the assembler can adjust the valve 2 according to the data, and an error signal is also issued to remind the assembler. Move the cylinder head 1 to the assembly area, and adjust the valve 2 according to the comparison result, that is, adjust the valve 2 according to the wrong data displayed. In this embodiment, the assembly area is located below the detection area, the assembly of the valve 2 is completed in the assembly area, and the detection of the valve 2 is performed in the detection area. After the adjustment is completed, repeat steps 1 and 2 until the comparison result meets the requirements. By comparing the detection result detected by the infrared scanner 3 with the set parameters, the detection of the height of the valve 2 is made more accurate and precise, and the detection error is also small, which greatly improves the reliability of the detection data.

[0034] See also Figure 1 The method for detecting the height of the valve 2 specifically includes:

[0035] S1, conveying the cylinder head 1 to a predetermined workstation, lifting the cylinder head 1 to an assembly area, and simultaneously turning the cylinder head 1 clockwise so that the position of the cylinder head 1 is convenient for assembling the valve 2, and assembling the valve 2 on the cylinder head 1;

[0036] S2. After confirming that the assembly is completed, the cylinder head 1 equipped with the valve 2 is turned clockwise to a set position so that the valve 2 can be detected, and the cylinder head 1 is lifted to the detection area;

[0037] S3, detecting the height of the valve 2 by means of the infrared scanner 3, and comparing the detection result with the set parameter by means of the monitoring device, and processing the cylinder head 1 according to the comparison result;

[0038] S4. When the comparison result meets the requirements, the cylinder head 1 is turned counterclockwise to the initial position, and the cylinder head 1 is lowered to the predetermined position, and the detection is completed;

[0039] When the comparison result does not meet the requirements, the monitoring device displays the wrong data in the comparison result, and moves the cylinder head 1 to the assembly area for adjustment. After the adjustment is completed, S1-S3 are repeated until the comparison result meets the requirements.

[0040] See also Figure 2 , a cylinder head valve height detection and control system with infrared scanning, comprising a roller belt 4, a lifting mechanism 5 and a crossbeam 7. The lifting mechanism 5 is installed on the crossbeam 7, and the roller belt 4 is located below the lifting mechanism 5. Among them, the roller belt 4 is used to transport the cylinder head 1. In this embodiment, a bearing device is provided between the cylinder head 1 and the roller belt 4. The bearing device is a bearing tray 6, which is used to support the cylinder head 1, and at the same time, it can also prevent the cylinder head 1 from directly contacting the roller belt 4 to cause damage to the cylinder head 1 or the roller belt 4. In addition, this control system positions the bearing tray 6 so that the cylinder head 1 is located at a predetermined position. The lifting mechanism 5 is used to lift or flip the cylinder head 1 so that the cylinder head 1 enters the assembly area or the detection area. Specifically, the roller belt 4 transports the cylinder head 1 to the predetermined position, the lifting mechanism 5 hooks the cylinder head 1, and lifts it to the assembly area, and flips the cylinder head 1 at an angle, so that the assembler can assemble the valve 2.

[0041] The control system also includes a detection device and a monitoring device. The detection device is located on one side of the lifting mechanism 5, and the detection device is electrically connected to the detection device. Among them, the detection device is used to detect the height of the valve 2, and the monitoring device is used to receive the detection result sent by the detection device, and compare the detection result with the set parameters to obtain the comparison result, and report and display it in time when the comparison result does not meet the requirements. Specifically, the detection device includes a plurality of infrared scanners 3, and the infrared scanners 3 pass through the crossbeam 7 and are installed on the crossbeam 7. The infrared scanners 3 are electrically connected to the monitoring device. In this embodiment, the detection device includes three infrared scanners 3, and the infrared scanners 3 are equidistantly installed on the crossbeam 7. The height of the valve 2 is detected by three equidistantly installed infrared scanners 3, which avoids the occurrence of detection blind spots during scanning and detection, making the height detection of the valve 2 more effective and reliable. See. Figure 3, as a further improvement, the infrared scanner 3 is installed on the crossbeam 7 through the mounting frame 8, and the mounting frame 8 is also provided with a protective box 9 that penetrates the crossbeam 7, and the scanning end of the infrared scanner 3 is located in the protective box 9. Specifically, a through slot is provided on the crossbeam 7. When installing the infrared scanner 3, the infrared scanner 3 is first installed on the mounting frame 8, and the scanning end of the infrared scanner 3 is located in the protective box 9 below the mounting frame 8, and then the protective box below the mounting frame 8 is inserted into the through slot, and the mounting frame 8 is fixed on the crossbeam 7. Because the structure of the control system for assembling the valve 2 is complex, if the infrared scanner 3 is installed one by one on the crossbeam 7, it is difficult to disassemble and assemble it during maintenance, which makes it inefficient. All infrared scanners 3 are integrated and installed through the mounting frame 8, which avoids the trouble of installing or disassembling the infrared scanners 3 one by one on the control system, making it more convenient and quick to maintain. The upper and lower end surfaces of the protective box 9 are straight-through structures, so that the infrared scanner 3 can effectively check the height of the valve 2 and protect the infrared scanner 3. The mounting frame 8 and the protective box 9 are an integrated structure, making the protective box 9 more stable and durable.

[0042] The monitoring device includes a PLC controller and an HMI panel. The PLC controller is electrically connected to the infrared scanner 3, and the PLC controller is also electrically connected to the HMI panel. The PLC controller is used to receive the detection results sent by the infrared scanner 3, and compare the detection results with the set parameters to obtain the comparison results; the HMI panel is used to display the comparison results, and when the comparison results do not meet the requirements, it displays the wrong data in the comparison results and sends an alarm signal to remind the assembler. In addition, the HMI panel of this embodiment can also be used to select the working mode of the control system as manual or debugging mode to better control the cylinder head 1.

[0043] The working principle of this control system is: start this control system, and the roller belt 4 transports the cylinder head 1 to the predetermined position. The lifting mechanism 5 is activated and hooks the cylinder head 1 to lift the cylinder head 1 to the assembly area; the lifting mechanism 5 turns the cylinder head 1 clockwise to make the position of the cylinder head 1 convenient for the assembly of the valve 2. The assembler assembles the valve 2, and after confirmation, the lifting mechanism 5 turns the cylinder head 1 clockwise again; the lifting mechanism 5 lifts the cylinder head 1 to the detection area. Start the infrared scanner 3 to measure the height of the valve 2, and send the scanned detection result to the PLC controller, which compares the detection result with the set parameters to obtain the comparison result.

[0044] When the comparison result meets the requirements, the lifting mechanism 5 flips the cylinder head 1 counterclockwise to the initial angle, and then lowers the cylinder head 1 to the carrying tray 6, and places the cylinder head 1 on the carrying tray 6. The lifting mechanism 5 is separated from the cylinder head 1, and the lifting mechanism 5, PLC controller and HMI panel of the control system are automatically reset, and the detection is completed.

[0045] When the comparison result does not meet the requirements, the HMI panel displays the wrong data in the comparison result and sends an error signal. The cylinder head 1 is moved to the assembly area through the manual or debugging mode on the HMI panel, and the assembly staff adjusts the valve 2 according to the displayed wrong data. After the adjustment is completed, the steps of testing and comparing the test results are repeated until the comparison result meets the requirements.

[0046] The above is only a preferred embodiment of the present invention. It should be pointed out that for those skilled in the art, several modifications and improvements can be made without departing from the structure of the present invention, which will not affect the effect of the implementation of the present invention and the practicality of the patent.

Claims

1. A cylinder head valve height detection method with infrared scanning, characterized in that: The steps include: Step 1: moving the cylinder head (1) equipped with the valve (2) to a detection area, and detecting the valve (2) on the cylinder head (1) to obtain a detection result; Step 2: comparing the detection result with the set parameter to obtain a comparison result, and processing the cylinder head (1) according to the comparison result; The processing of the cylinder head (1) according to the comparison result includes: If the comparison result meets the requirements, the cylinder head (1) is reset and the detection ends; The comparison result does not meet the requirements, reporting that the comparison result does not meet the requirements, moving the cylinder head (1) to the assembly area, adjusting the valve (2) according to the comparison result, and repeating step one and step two until the comparison result meets the requirements; Specifically include: S1, conveying the cylinder head (1) to a predetermined workstation, lifting the cylinder head (1) to an assembly area, and simultaneously turning the cylinder head (1) clockwise so that the position of the cylinder head (1) is convenient for assembling the valve (2), and assembling the valve (2) on the cylinder head (1); S2. After confirming that the assembly is completed, the cylinder head (1) equipped with the valve (2) is turned clockwise to a set position so that the valve (2) can be detected, and the cylinder head (1) is lifted to the detection area; S3, detecting the height of the valve (2) by means of an infrared scanner (3), comparing the detection result with a set parameter by means of a monitoring device, and processing the cylinder head (1) according to the comparison result; S4. When the comparison result meets the requirements, the cylinder head (1) is turned counterclockwise to the initial position, and the cylinder head (1) is lowered to a predetermined position, and the detection is completed; When the comparison result does not meet the requirements, the monitoring device displays the erroneous data in the comparison result, moves the cylinder head (1) to the assembly area for adjustment, and repeats S1-S3 until the comparison result meets the requirements; The control system comprises a roller belt (4), a lifting mechanism (5) and a crossbeam (7), wherein the lifting mechanism (5) is mounted on the crossbeam (7), and the roller belt (4) is located below the lifting mechanism (5). The control system is characterized in that it also comprises a detection device and a monitoring device, wherein the detection device is located on one side of the lifting mechanism (5), and the detection device is electrically connected to the detection device; the detection device comprises a plurality of infrared scanners (3), wherein the infrared scanners (3) penetrate the crossbeam (7) and are mounted on the crossbeam (7), and wherein the infrared scanners (3) are electrically connected to the monitoring device; The detection device comprises three infrared scanners (3), wherein the infrared scanners (3) are mounted on the crossbeam (7) at equal distances; The infrared scanner (3) is mounted on the crossbeam (7) via a mounting frame (8); a protective box (9) penetrating the crossbeam (7) is provided below the mounting frame (8); a scanning end of the infrared scanner (3) is located within the protective box (9).

2. A cylinder head valve height detection method with infrared scanning according to claim 1, characterized in that: The report comparison result does not meet the requirements, including: displaying erroneous data in the comparison result.

3. The cylinder head valve height detection method with infrared scanning according to claim 1, characterized in that: The installation frame (8) and the protection box (9) are an integrated structure.

4. The cylinder head valve height detection method with infrared scanning according to claim 1 is characterized in that: The monitoring device comprises a PLC controller and an HMI panel, wherein the PLC controller is electrically connected to an infrared scanner (3), and the PLC controller is also electrically connected to the HMI panel.

5. The method for detecting cylinder head valve height with infrared scanning according to claim 1, characterized in that: A bearing device is provided between the cylinder cover (1) and the roller belt (4).

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