Flatness detection device

Abstract

The utility model discloses a flatness detection device. The flatness detection device comprises a fixed base, a supporting rod and a measuring rod, the lower end of the supporting rod is inserted into the fixed base in a sliding manner; one end of the measuring rod is a free end, the other end opposite to the free end is a fixed end, and the fixed end is slidably mounted on the supporting rod; the free end of the measuring rod is provided with a flatness detection surface A. The end surface, on the same side as the free end of the measuring rod, of the fixed base is provided with a flatness detection surface B. The device further comprises a surface difference value digital display screen, a magnetic material contact surface and the like. The device disclosed by the utility model not only can be used for electronic measurement, but also can be used for mechanical measurement under the condition of no power, and is simple in design principle, easy in material purchase and convenient to use on site.

Description

Technical Field

[0001] The utility model belongs to the technical field of flatness detection, and in particular relates to a flatness detection device. Background Art

[0002] Glass is increasingly used in electronic display screens, such as protective glass (i.e., glass substrate) for electronic devices such as televisions, laptops, tablets, and mobile phones. At present, the air flotation plate has achieved non-contact handling of glass substrates through its special design and working principle. During the transportation of the glass substrate, compressed air is introduced into the air flotation bar, which interacts with the vacuum suction hole to form a thin air film between the air flotation plate and the glass substrate. This air film allows the glass substrate to float above the air flotation plate, avoiding damage and contamination caused by contact friction in traditional handling methods. The flatness of the air flotation plate is a key indicator of the efficiency of glass substrate transportation. If the air flotation plate is not flat, the thickness of the air film between it and the glass substrate may be uneven. In some areas, the air film may be too thin or even lose the air film support, causing direct contact between the glass substrate and the air flotation plate, which in turn generates friction, thereby increasing the risk of scratches and wear on the glass substrate.

[0003] For the glass substrate packaging rack, its carrier is a stacked structure formed by bonding a stainless steel metal base and an EPP board, EVA board, etc. The side wall of the stacked structure serves as a positioning reference for the packaging robot, and its theoretical flatness difference should be zero. However, there is often a side flatness error between the stainless steel carrier of the actual packaging rack and the EPP board. The packaging robot corrects the placement of the board through the infrared dot position of the sensor. The infrared dot position is located on the side of the stainless steel carrier, while the glass substrate is placed directly on the EPP board. Therefore, if there is a flatness difference between the side of the stainless steel carrier and the side of the EPP board, it will cause the packaging robot to offset when placing the substrate glass, causing the substrate glass to offset on the carrier or even partially hang in the air, which can easily cause glass breakage during transportation and does not meet the production line glass substrate packaging process requirements.

[0004] However, the existing precision flatness detection equipment has extremely high requirements on the environment when working, which does not meet the detection requirements of the flatness of the air floating plate and the substrate glass support table under working conditions. Traditional flatness measurement equipment has low accuracy and is prone to errors. Therefore, it is urgent to design flatness detection equipment that meets the accuracy and working conditions requirements. Utility Model Content

[0005] In order to overcome the above-mentioned shortcomings of the prior art, the purpose of the utility model is to provide a flatness detection device for measuring the flatness of a glass substrate packaging rack and an air floating plate transmission belt, so as to improve the accuracy of detecting the flatness of the air floating plate and the glass substrate packaging rack.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] The utility model provides a flatness detection device, comprising a fixed base, a support rod and a measuring rod; the lower end of the support rod can be slidably inserted into the fixed base; one end of the measuring rod is a free end, and the other end opposite to the free end is a fixed end, and the fixed end can be slidably installed on the supporting rod; the free end of the measuring rod is equipped with a flatness detection surface A, and the end surface of the fixed base on the same side as the free end of the measuring rod is equipped with a flatness detection surface B.

[0008] Specifically, a sleeve hole is provided on the measuring rod, and the sleeve hole is close to the fixed end of the measuring rod, and the measuring rod is inserted into the support rod through the sleeve hole; a screw hole is provided at the fixed end of the measuring rod, and the screw hole passes through the fixed end of the measuring rod and the side wall of the sleeve hole near the fixed end; the screw rod cooperates with the screw hole, and one end of the screw rod abuts against or separates from the corresponding side wall of the support rod.

[0009] Specifically, a horizontal long slot is provided in the fixed base, the support rod is assembled on the horizontal long slot, a screw hole is provided on the bottom surface of the support rod, and a combination bolt passes through the long slot from the lower part of the fixed base and cooperates with the screw hole on the bottom surface of the support rod.

[0010] A vertical long slot is formed on the support rod, a screw hole is formed on the end face of the fixed end of the measuring rod, and a combination bolt passes through the long slot from the other side of the support rod corresponding to the fixed end of the measuring rod and cooperates with the screw hole of the fixed end of the measuring rod.

[0011] Specifically, a limiter is provided on the side wall of the upper end of the support rod to limit the height of the measuring rod, and the limiter can be provided as a screw.

[0012] Specifically, the free end of the measuring rod and the end surface of the fixed base on the same side as the free end of the measuring rod are provided with a dovetail platform or a T-shaped platform.

[0013] Furthermore, the flatness detection device also has a face difference digital detection device, the flatness detection surface A and the flatness detection surface B are magnetic sensors, and the flatness detection surface A and the flatness detection surface B are electrically connected to the face difference digital detection device.

[0014] Specifically, the flatness detection device also includes an electric system, which is connected to the flatness digital detection device and electrically adjusts the displacement of the support rod on the fixed base.

[0015] Specifically, the fixed base, the support rod and the measuring rod of the flatness detection device are made of stainless steel.

[0016] Compared with the prior art, the utility model has the following beneficial effects:

[0017] The flatness detection device proposed in the utility model can be used to measure the flatness of the side surface of the substrate glass packaging rack bearing platform and the flatness of the spliced ​​air floating plate conveyor belt.x The support rods that move in the direction of y The measuring rod that moves in the same direction can accurately control the leveling and zeroing of the flatness detection surface A and the flatness detection surface B. Compared with traditional flatness measurement, it is more accurate and less prone to errors. The flatness difference error is less than 0.1mm, and there are no special requirements for the detection environment, which meets the use conditions of glass substrate transportation and packaging.

[0018] Furthermore, the flatness detection device can be used both electronically and mechanically, and has wider practicality: in electronic mode, by setting detection surface A and detection surface B as magnetic sensors, the flatness difference can be measured and directly fed back to the display screen; in mechanical mode, the measurement purpose can also be achieved with the help of magnetic material auxiliary objects, feeler gauges, etc. y The flatness detection surface A and the flatness detection surface B are leveled by translation in the direction. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is the main view of the utility model, in which: 1. fixed base; 2. support rod; 3. measuring rod; 4-1. flatness detection surface A; 4-2. flatness detection surface B; 5. screw; 6. screw rod; 7. surface difference value digital display screen;

[0020] Figure 2 Schematic diagram of the glass bearing platform, wherein 8-1 is a stainless steel glass bearing platform; 8-2 is a lower PVC board; 8-3 is an intermediate EVA board; 8-4 is an uppermost EPP board; DETAILED DESCRIPTION

[0021] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0022] It should be noted that the terms "first", "second", etc. in the specification and claims of the utility model and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the utility model described here can be implemented in an order other than those illustrated or described here. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0023] The utility model is further described in detail below with reference to the accompanying drawings:

[0024] See also Figure 1 The utility model proposes a flatness detection device, including a fixed base 1, a support rod 2 and a measuring rod 3; the lower end of the support rod 2 can be slidably inserted on the fixed base 1; one end of the measuring rod 3 is a free end, and the other end opposite to the free end is a fixed end, and the fixed end can be slidably installed on the support rod 2; the T-shaped platform at the free end of the measuring rod 3 is installed with a flatness detection surface A4-1, and the T-shaped platform on the end surface of the fixed base 1 on the same side as the free end of the measuring rod 3 is installed with a flatness detection surface B4-2. A sleeve hole is provided on the measuring rod 3, and the sleeve hole is close to the fixed end of the measuring rod 3. The measuring rod 3 is inserted on the support rod 2 through the sleeve hole; a screw hole is provided on the end surface of the fixed end of the measuring rod 3, and the screw hole passes through the end surface of the fixed end of the measuring rod 3 and the side wall of the sleeve hole near the fixed end; the screw rod 6 cooperates with the screw hole. When adjusting the height of the measuring rod 3, the screw rod 6 is suspended loosely so that the left end of the screw rod 6 does not contact the side wall of the support rod 2, and the measuring rod 3 can freely translate along the y direction on the support rod 2. When adjusted to the working position, the screw rod is screwed in so that the left end of the screw rod contacts and abuts against the side wall of the support rod 2 to fix the height of the measuring rod 3. The fixed base 1 is provided with a horizontal long groove, and the bottom surface of the support rod 2 is provided with a screw hole. The combination bolt passes through the long groove from the lower part of the fixed base and cooperates with the screw hole on the bottom surface of the support rod 2. The flatness detection surface A4-1 and the flatness detection surface B4-2 are magnetic sensors, which are electrically connected to the face difference value digital detection device 7. The electric system is electrically connected to the face difference digital detection device 7, and the electric system power transmission adjusts the displacement of the support rod 2 on the fixed base 1.

[0025] Electronics uses measurement methods to measure the flatness of the glass carrier: Figure 1As shown, the flatness detection surface A4-1 and the flatness detection surface B4-2 are leveled and zeroed on the side of the glass cover plate support platform 8 through the surface difference value digital display screen, and the surface difference value digital display screen displays real-time readings. According to actual conditions, the height of the measuring rod 3 is adjusted to obtain the plane difference between the flatness detection surface A4-1 and the flatness detection surface B4-2 of the packaging rack at the corresponding position.

[0026] Mechanical method to measure the flatness of the glass support platform: Figure 1 As shown, when the digital display screen is not used, the method of use is the same as that of the electronic display. Figure 1 Use a magnetic plate to assist in adjusting the detection surface A4-1 and the flatness detection surface B4-2 to level them on the stainless steel support platform. Fix the support rod 2 first, and use the magnetic auxiliary tool to attract the flatness detection surface B4-2. At this time, it can be clearly seen that there is a gap in the flatness detection surface A4-1, that is, there is a flatness difference in the object to be inspected. Finally, use a corresponding 1mm or 0.1mm feeler gauge to detect the flatness. If the feeler gauge can be inserted, it means that the process requirements are not met. If it cannot be inserted, it meets the production process requirements.

[0027] The same method is used when measuring the flatness of the air floating plate surface. When measuring the horizontal error of the air floating unit installation by adjusting the support rod 2, alignment is performed on the flatness detection surface B4-2, and then the height plane difference can be measured by adjusting the flatness detection surface A4-1 of the measuring rod 3.

[0028] The flatness detection device proposed in the utility model needs to specify the height range of the measuring rod and the contact range of the magnetic material plane according to the size specifications of the measuring point. For the measuring rod, support rod, etc., stainless steel materials that are not easily deformed can be selected to ensure the overall flatness. The production quality and use process of magnetic items must meet the cleanliness standards of the clean room. No iron filings and fine impurities can be adsorbed on the surface of the magnet to cause pollution to the glass substrate packaging rack and conveyor belt.

[0029] The above content is only for explaining the technical idea of ​​the utility model and cannot be used to limit the protection scope of the utility model. Any changes made on the basis of the technical solution in accordance with the technical idea proposed by the utility model shall fall within the protection scope of the claims of the utility model.

Claims

1. A flatness detection device, characterized in that: The invention comprises a fixed base (1), a support rod (2) and a measuring rod (3); the lower end of the support rod (2) is slidably inserted into the fixed base (1); one end of the measuring rod (3) is a free end, and the other end opposite to the free end is a fixed end, and the fixed end is slidably vertically installed on the support rod (2); a flatness detection surface A (4-1) is provided at the free end of the measuring rod (3), and a flatness detection surface B (4-2) is provided on the end surface of the fixed base (1) on the same side as the free end of the measuring rod (3).

2. The flatness detection device according to claim 1, characterized in that: The measuring rod (3) is provided with a sleeve hole, and the measuring rod (3) is inserted into the support rod (2) through the sleeve hole; the end surface of the fixed end of the measuring rod (3) is provided with a screw hole, and the screw hole passes through the end surface of the fixed end of the measuring rod (3) and the side wall of the sleeve hole; the screw rod (6) passes through the screw hole and abuts against or is separated from the side wall of the support rod (2).

3. The flatness detection device according to claim 1, characterized in that: The fixed base (1) is provided with a horizontal long groove, and the support rod (2) is mounted on the horizontal long groove.

4. The flatness detection device according to claim 1, characterized in that: The support rod (2) is provided with a vertical long slot, and the fixed end of the measuring rod (3) is mounted on one side of the vertical long slot.

5. The flatness detection device according to claim 1, characterized in that: A limiter is provided on the side wall of the upper end of the support rod (2) to limit the height of the measuring rod (3).

6. The flatness detection device according to claim 5, characterized in that: The stopper is a screw (5).

7. The flatness detection device according to claim 1, characterized in that: The free end of the measuring rod (3) and the end surface of the fixed base (1) on the same side as the free end of the measuring rod (3) are provided with a dovetail platform or a T-shaped platform.

8. The flatness detection device according to claim 7, characterized in that: It also includes a surface difference value digital display screen (7), and the flatness detection surface A (4-1) and the flatness detection surface B (4-2) are magnetic sensors, which are electrically connected to the surface difference value digital display screen (7).

9. The flatness detection device according to claim 8, characterized in that: It also includes an electric system, which is electrically connected to the surface difference value digital display screen (7), and the electric system adjusts the displacement of the support rod (2) on the fixed base (1).

10. The flatness detection device according to any one of claims 1 to 9, characterized in that: The fixed base (1), the support rod (2) and the measuring rod (3) are made of stainless steel.

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