Automatic height measuring tool

Abstract

The utility model provides an automatic height measuring tool, relates to the technical field of air conditioners, and solves the technical problem of poor functionality of a mainboard caused by abnormal height of a power device. The automatic height measuring tool comprises a supporting structure, a conveying assembly and a height measuring assembly. Two ends of the conveying assembly are respectively connected with the up-and-down process equipment for conveying the to-be-detected product between the up-and-down processes; the height measuring assembly is arranged beside the conveying assembly through a supporting structure and is used for measuring the height of the conveyed to-be-measured product; the in-place detection assembly is installed on the conveying assembly, and the limiting assembly is used for limiting the position of a product to be detected. According to the utility model, the height of the to-be-measured product conveyed in the conveying assembly can be automatically measured, the product with no abnormal height can be ensured to enter the next process, the uncontrollable problem caused by the abnormal height of the power device in the welding process is solved, and the process and after-sales offline problems are completely eradicated.

Description

Technical Field

[0001] This utility model relates to the field of air conditioning technology, and in particular to an automatic height measuring fixture for power devices on the main board of an air conditioner outdoor unit. Background Technology

[0002] When soldering power components onto the mainboard of the air conditioner outdoor unit, due to issues such as machining precision and material dimensional tolerances, general-purpose chemical tooling is used. During the soldering process, dirt and abnormal springback of the tooling can lead to abnormal soldering height. This abnormal height, over prolonged use, causes heat buildup, hindering proper heat dissipation and ultimately resulting in the mainboard burning out. Utility Model Content

[0003] The purpose of this utility model is to provide an automatic height measurement fixture for power devices on the main board of an air conditioner outdoor unit, so as to solve the technical problem of poor main board functionality caused by abnormal height of power devices in the prior art.

[0004] To achieve the above objectives, the present invention provides the following technical solution:

[0005] This utility model provides an automatic height measuring fixture, comprising a support structure, a conveying assembly, and a height measuring assembly; wherein:

[0006] The conveying component is connected to the upstream and downstream process equipment at both ends, and is used to convey the product to be tested between the upstream and downstream processes.

[0007] The height measuring component is mounted on the side of the conveying component via the supporting structure and is used to measure the height of the conveyed product under test.

[0008] The automatic height measuring fixture provided by this utility model can automatically measure the height of the product to be tested being transported in the conveying component by installing the height measuring component next to the conveying component. This ensures that no product with abnormal height enters the next process, solves the uncontrollable problem caused by abnormal height of power devices during the welding process, and eliminates process and after-sales problems.

[0009] Based on the above technical solution, the present invention can be further improved as follows.

[0010] As a further improvement of this utility model, the conveying assembly includes a conveying track and a conveyor belt; wherein:

[0011] The number of conveying tracks is two, which are set opposite to each other, with the distance between them slightly greater than the width of the product to be tested;

[0012] There are two conveyor belts, which are fixed on opposite side walls of the two conveyor tracks.

[0013] As a further improvement of this utility model, a gap is left between the top of the conveyor belt and the top of the conveyor track.

[0014] This invention uses a conveyor belt to transport the product to be tested. The transport process is stable and reliable, and the conveyor track forms a limit for the transport of the product to be tested, preventing the product from falling during the transport process.

[0015] As a further improvement of this utility model, the support structure includes a support frame, which is mounted on one side of the conveying assembly.

[0016] The tooling of this invention is relatively small and can be installed on the production line without affecting the production cycle. The tooling is also highly versatile and suitable for various PCB designs.

[0017] As a further improvement of this utility model, the height measuring component includes an X-axis electric cylinder, a Y-axis electric cylinder, and a laser detection component; wherein:

[0018] The X-axis electric cylinder is mounted on the support structure and can reciprocate along the first direction;

[0019] The Y-axis electric cylinder is mounted on the X-axis electric cylinder and can reciprocate along the second direction;

[0020] The laser detection component is mounted on the Y-axis electric cylinder.

[0021] This invention uses X-axis and Y-axis electric cylinders to drive the laser detection component to move in two degrees of freedom, thereby adjusting the detection position and facilitating accurate measurement.

[0022] As a further improvement of this utility model, it also includes a positioning detection component installed on the conveying assembly.

[0023] This invention uses a positioning detection component to determine the positioning of the product to be inspected. Once the product is in position, height detection is initiated, thus automating the inspection process, eliminating the need for manual labor, reducing labor intensity, improving the level of automation, and solving the problem of how to automatically detect height online.

[0024] As a further improvement of this utility model, the positioning detection component is a pressure sensor, a proximity switch, an infrared sensor, or a vision detection component.

[0025] By using pressure sensors to detect product arrival, the problem of how to automatically trigger detection when products enter or leave the board is solved.

[0026] As a further improvement of this utility model, it also includes a limiting component installed on the conveying assembly for limiting the position of the product to be tested.

[0027] This invention uses a limiting component to position the product to be tested, and the positioning position is the detection position. The laser detection component can complete the height detection of the power devices on the product at the detection position.

[0028] As a further improvement of this utility model, the limiting component includes a limiting cylinder, which is vertically mounted on the conveying component.

[0029] By using a practical limit cylinder to block the product, the problem of not releasing defective products can be solved.

[0030] As a further improvement of this utility model, there is a gap between the limiting component and the positioning detection component.

[0031] As a further improvement of this utility model, a protective cover is also included on the outside of the conveying assembly and the height measuring assembly.

[0032] This invention sets the limiting component behind the arrival detection component. When the arrival detection component detects the product, it can control the limiting component to move while the conveying component continues to convey without stopping. The limiting component will open to the position before the product arrives. When the product arrives at the detection position, the limiting component can be used to limit the position of the product, thereby completing the automatic static height measurement.

[0033] This utility model's automatic height measuring fixture solves the problem that abnormal welding heights of power devices cannot be detected by manual visual inspection and functional testing. It also solves the problem of not being able to detect sudden damage during the use of the fixture. The automatic height measuring fixture is designed to be compatible with split outdoor units and cabinet-type mainboards. It achieves detection in different areas through electric cylinder motion control. When products are updated and positions are changed, the coordinates of the electric cylinder can be adjusted to achieve compatible measurement of different products and positions. It solves the problem of incomplete control over the height of air conditioners during the process and achieves full quality inspection. Attached Figure Description

[0034] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0035] Figure 1 This is a schematic diagram of the structure of the automatic height measuring fixture of this utility model;

[0036] Figure 2 This is a partial structural schematic diagram of the conveying component in the automatic height measuring fixture of this utility model;

[0037] Figure 3This is a partial structural schematic diagram of the height measuring component in the automatic height measuring fixture of this utility model;

[0038] Figure 4 This is a structural schematic diagram of a product processed in the automatic height measuring tooling of this utility model;

[0039] Figure 5 This is the logic control diagram of the automatic height measuring fixture of this utility model.

[0040] In the diagram: 1. Conveying assembly; 11. Conveying track; 12. Conveying belt; 2. Height measuring assembly; 21. Support frame; 22. X-axis electric cylinder; 23. Y-axis electric cylinder; 24. Laser detection component; 3. Protective cover; 100. Product; 200. First step detection element; 300. Second step detection element. Detailed Implementation

[0041] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0042] like Figures 1-5 As shown, this utility model provides an automatic height measuring fixture, including a support structure, a conveying component 1, and a height measuring component 2; wherein:

[0043] The two ends of the conveying component 1 are connected to the upstream and downstream process equipment respectively, and are used to convey the product to be tested 100 between the upstream and downstream processes;

[0044] The height measuring component 2 is installed on the side of the conveying component 1 through a support structure, and is used to measure the height of the conveyed product 100 to be tested.

[0045] The automatic height measuring fixture provided by this utility model can automatically measure the height of the product 100 being transported in the conveying component 1 by installing the height measuring component 2 next to the conveying component 1. This ensures that no product with abnormal height enters the next process, solves the uncontrollable problem caused by abnormal height of power devices during the welding process, and eliminates problems related to the process and after-sales service.

[0046] Specifically, such as Figure 2 As shown, in this embodiment, the conveying assembly 1 includes a conveying track 11 and a conveyor belt 12; wherein:

[0047] There are two conveyor tracks 11, which are set opposite to each other, with the distance between them slightly greater than the width of the product 100 to be tested. This structure allows the conveyor tracks 11 to form a certain limit on the product 100, preventing deflection or skew during the conveying process.

[0048] There are two conveyor belts 12, which are fixed on opposite side walls of the two conveyor tracks 11.

[0049] It should be noted that the conveyor belt 12 can be a component capable of conveying materials, such as a conveyor chain or a conveyor belt; the meaning of conveyor belt 12 refers to a conveying component that is in the shape of a strip, and it does not only refer to a conveyor belt.

[0050] To further develop the conveying limiting mechanism, in this embodiment, as follows: Figure 2 As shown, there is a gap between the top of the conveyor belt 12 and the top of the conveyor track 11. This gap forms an edge limit for the product 100 during the conveying process.

[0051] This invention uses a conveyor belt to transport the product to be tested. The transport process is stable and reliable, and the conveyor track forms a limit for the transport of the product to be tested, preventing the product from falling during the transport process.

[0052] like Figure 1 and Figure 3 As shown, as an optional embodiment of the present invention, the support structure includes a support frame 21, which is mounted on one side of the conveying assembly 1.

[0053] To simplify the structure, in this embodiment, the support frame 21 has an inverted U-shaped structure and is made of aluminum profile or square steel.

[0054] The tooling of this invention is relatively small and can be installed on the production line without affecting the production cycle. The tooling is also highly versatile and suitable for various PCB designs.

[0055] like Figure 3 As shown, in this embodiment, the height measuring component 2 includes an X-axis electric cylinder 22, a Y-axis electric cylinder 23, and a laser detection component 24; wherein:

[0056] The X-axis electric cylinder 22 is mounted on the support structure and can reciprocate along the first direction; specifically, the X-axis electric cylinder 22 is mounted on the top of the support frame 21 and can reciprocate along the conveying direction of the conveying assembly 1.

[0057] The Y-axis electric cylinder 23 is mounted on the X-axis electric cylinder 22 and can reciprocate along the second direction; specifically, the second direction forms a 90-degree angle with the first direction; the X and Y axis electric cylinders are used to drive the laser detection component to move to the detection position;

[0058] The laser detection component 24 is mounted on the Y-axis electric cylinder 23 and is used to test the height of components that require testing.

[0059] With the above structural configuration, the laser detection component 24 can reciprocate in two degrees of freedom directions under the drive of the X-axis electric cylinder 22 and the Y-axis electric cylinder 23. To achieve accurate measurement, the detection position parameters corresponding to different products 100 can be preset in the control system. Then, the control system can control the precise movements of the X-axis electric cylinder 22 and the Y-axis electric cylinder 23 according to the type of incoming product, thereby achieving accurate height measurement. Furthermore, when multiple areas of the product 100 need to be measured, such as… Figure 4 As shown, there are two components to be tested in the product 100, namely the first step detection component 200 and the second step detection component 300. The positions of the two detection components can be preset into the control system. When the product 100 arrives at the detection position, that is, when the product 100 is accurately positioned at the detection position, the control system can control the X-axis electric cylinder 22 and the Y-axis electric cylinder 23 to move accurately according to the preset parameters, so as to drive the laser detection component 24 to complete the sequential height measurement of the first step detection component 200 and the second step detection component 300 respectively.

[0060] This invention uses X-axis and Y-axis electric cylinders to drive the laser detection component to move in two degrees of freedom, thereby adjusting the detection position and facilitating accurate measurement.

[0061] like Figure 1 As shown, in this embodiment, in order to achieve precise movement, precise measurement, and ensure measurement accuracy, a positioning detection component installed on the conveying assembly 1 is also included. The positioning detection component is shown in the accompanying drawings.

[0062] This invention uses a positioning detection component to determine the positioning of the product to be inspected. Once the product is in position, height detection is initiated, thus automating the inspection process, eliminating the need for manual labor, reducing labor intensity, improving the level of automation, and solving the problem of how to automatically detect height online.

[0063] Furthermore, in this embodiment, the positioning detection component is a pressure sensor. Of course, the positioning detection component can also be a proximity switch, a vision detection component, an infrared detection element, an ultrasonic detection element, etc. In this embodiment, it is not limited to one type of detection component, as long as it can trigger a signal and send a positioning signal to the control system when the product 100 is transported to the trigger position by the conveying component 1. The specific structure is not specifically limited.

[0064] This invention solves the problem of how to automatically trigger detection when a product enters or leaves the board by using a pressure sensor for product arrival detection.

[0065] To prevent products 100 that have not yet completed height measurement from being directly conveyed to the next process, this embodiment also includes a limiting component (not shown in the figures) installed on the conveying assembly 1 for limiting the position of the product to be measured.

[0066] This invention uses a limiting component to position the product to be tested, and the positioning position is the detection position. The laser detection component can complete the height detection of the power devices on the product at the detection position.

[0067] Furthermore, the limiting component includes a limiting cylinder, which is vertically mounted on the conveying component 1. The limiting cylinder is used to restrict the backward transport of the main board and ensure that it remains stationary during detection. When the product 100 arrives at the trigger position, the arrival detection component will be triggered, so that the control system knows that the product 100 has arrived at the trigger position. Then, the control system controls the limiting cylinder to extend downward, so that the end extends into the position above the surface of the conveyor belt 12. The distance between the end and the surface of the conveyor belt 12 is less than the thickness of the product 100, so as to block the product 100 and prevent the product 100 from being transported backward by the conveyor belt 12.

[0068] It should be noted that the position of the limit component is the detection position, and the position of the arrival detection component is the trigger position. There is a gap between the trigger position and the detection position. This gap ensures that the time it takes for the product 100 to move from the trigger position to the detection position is less than the time it takes for the limit cylinder to extend to its full position. This ensures that the product 100 reaches the detection position only after the limit cylinder has extended to its full position, and then the height measurement is performed.

[0069] By using a practical limit cylinder to block the product, the problem of not releasing defective products can be solved.

[0070] It should be noted that, in this embodiment, the interval between the limiting component and the positioning detection component is 40cm.

[0071] The setting of this interval depends on the conveying speed of the conveying component 1 and the specifications of the product 100. It is not mandatory. In actual design, it needs to be calculated based on the above parameters.

[0072] To ensure the safe operation of the equipment, a protective cover 3 is also included, which is installed on the outside of the conveying component 1 and the height measuring component 2.

[0073] The protective cover 3 has a cubic structure, and transparent observation plates can be installed on each side of the protective cover 3 to facilitate real-time observation.

[0074] As another optional embodiment of this utility model, the automatic height measuring fixture is manufactured using 3D laser scanning. Although the processing is simple, the cost is high.

[0075] This invention sets the limiting component behind the arrival detection component. When the arrival detection component detects the product, it can control the limiting component to move while the conveying component continues to convey without stopping. The limiting component will open to the position before the product arrives. When the product arrives at the detection position, the limiting component can be used to limit the position of the product, thereby completing the automatic static height measurement.

[0076] This utility model's automatic height measuring fixture solves the problem that abnormal welding heights of power devices cannot be detected by manual visual inspection and functional testing. It also solves the problem of not being able to detect sudden damage during the use of the fixture. The automatic height measuring fixture is designed to be compatible with split outdoor units and cabinet-type mainboards. It achieves detection in different areas through electric cylinder motion control. When products are updated and positions are changed, the coordinates of the electric cylinder can be adjusted to achieve compatible measurement of different products and positions. It solves the problem of incomplete control over the height of air conditioners during the process and achieves full quality inspection.

[0077] like Figure 5 As shown, the automatic height measuring fixture of this utility model includes the following steps when in use:

[0078] The product 100 to be inspected enters the conveying assembly 1 after the previous process. This product 100 can be a motherboard, which is then transported on the conveying assembly 1. When the motherboard is transported to the trigger position of the conveying assembly 1, the positioning detection component located there is triggered, sending a positioning signal to the control system. After receiving the positioning signal, the control system sends a signal to the limit cylinder, which then extends downwards to form a blocking limit structure. When the motherboard moves to the position of the limit cylinder and blocks it, meaning the motherboard has reached the inspection position, the XY-axis electric cylinder actuates, driving the laser detection component 24 to move to the set position. After positioning, the first step involves height detection of component 200. Then, the XY-axis electric cylinder continues to move, driving the laser detection component 24 to the set position. The second step involves height detection of component 300. Component 200 in the first step includes diodes, IGBTs, and rectifier bridges; component 300 in the second step includes IPMs. In other words, the height of the power devices (diodes, IGBTs, and rectifier bridges) is detected first. If this step is successful, the device moves to the IPM detection position. When all height checks are successful and no abnormalities are found, the limit cylinder rises to release the product, and the mainboard is transported to the next process. The entire process is automated, changing the product inspection from a 5-piece random sampling to a 100% inspection. Compared to manual measurement, this not only improves inspection coverage but also enhances process inspection accuracy. The inspection does not alter the original production process or PCB design. The combination of laser ranging tools and electric cylinders enables height measurement at different product positions. This improves production efficiency and the automation level of the production workshop. It also solves the uncontrollable problem of height abnormalities during production by developing and designing tooling without altering the original production process or PCB design. This improves the first-pass yield and product reliability.

[0079] It should be noted that the control system in this embodiment includes a PLC, an industrial computer, and a servo controller. The control system mainly consists of a programmable logic controller, a touchscreen, switches, and sensors. The control system controls each mechanism to execute sequentially. If an abnormality occurs during device operation, the emergency stop switch button can be pressed to prevent damage to the device. The touchscreen can individually control each motor and cylinder, facilitating installation and debugging.

[0080] First, it should be noted that "inward" refers to the direction towards the center of the storage space, while "outward" refers to the direction away from the center of the storage space.

[0081] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the appendix. Figure 1 The orientations or positional relationships shown are for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0082] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0083] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0084] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0085] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0086] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. An automatic height measuring tool characterized by, Includes support structure, conveying components, and height measuring components; among which: The conveying component is connected to the upstream and downstream process equipment at both ends, and is used to convey the product to be tested between the upstream and downstream processes. The height measuring component is mounted on the side of the conveying component via the supporting structure and is used to measure the height of the conveyed product under test.

2. The automatic height measuring tooling of claim 1, wherein, The conveying assembly includes a conveying track and a conveyor belt; wherein: The number of conveying tracks is two, which are set opposite to each other, with the distance between them slightly greater than the width of the product to be tested; There are two conveyor belts, which are fixed on opposite side walls of the two conveyor tracks.

3. The automatic height measuring tooling of claim 2, wherein, There is a gap between the top of the conveyor belt and the top of the conveyor track.

4. The automatic height measuring fixture of claim 1, wherein, The support structure includes a support frame, which is mounted on one side of the conveying assembly.

5. The automatic height measuring fixture of claim 4, wherein, The height measurement component includes an X-axis electric cylinder, a Y-axis electric cylinder, and a laser detection component; wherein: The X-axis electric cylinder is mounted on the support structure and can reciprocate along the first direction; The Y-axis electric cylinder is mounted on the X-axis electric cylinder and can reciprocate along the second direction; The laser detection component is mounted on the Y-axis electric cylinder.

6. The automatic height measuring fixture according to claim 1, characterized in that, It also includes a positioning detection component installed on the conveying assembly.

7. The automatic height measuring fixture according to claim 6, characterized in that, The positioning detection component is a pressure sensor, proximity switch, infrared sensor, or vision detection component.

8. The automatic height measuring fixture of claim 6, wherein, It also includes a limiting component installed on the conveying assembly for positioning the product to be tested.

9. The automatic height measuring fixture of claim 8, wherein, The limiting component includes a limiting cylinder, which is vertically mounted on the conveying component.

10. The automatic height measuring fixture of claim 8, wherein, There is a gap between the limiting component and the positioning detection component.

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