Non-contact height measuring device and dicing saw

Abstract

The invention relates to the technical field of workshop equipment, and discloses a non-contact height measurement device and a dicing saw, and the device comprises a height measurement transmitting unit which is used for transmitting a height measurement signal; the height measurement receiving unit is used for receiving a height measurement signal; the height measurement transmitting unit comprises a first closed box body, a first shielding assembly and a transmitting assembly; the height measurement receiving unit comprises a second closed box body, a second shielding assembly and a receiving assembly, and when the device does not work, the first shielding assembly and the second shielding assembly are used for shielding the transmitting hole and the receiving hole respectively, so that the transmitting assembly and the receiving assembly are located in a closed environment; the transmitting assembly and the receiving assembly are prevented from being polluted by water mist and residues generated in the scribing process, and therefore when the device works, the transmitting assembly and the receiving assembly do not need to be cleaned and blow-dried in advance, non-contact height measurement operation is simplified, and water resources are saved.

Description

Technical Field

[0001] The present invention relates to the technical field of workshop equipment, and particularly to a non-contact height measuring device and a dicing machine. Background Art

[0002] Since non-contact height measuring devices are usually used in some component processing environments where the environment is filled with material residues, etc., the material residues and water mist in the environment often adhere to the detection surface of the non-contact height measuring device. In order to ensure the accuracy of the device height measurement, therefore, before using the non-contact height measuring device, it is necessary to wash the non-contact height measuring device with water, dry it, and then perform height measurement.

[0003] Known non-contact height measuring devices include a flat push mechanism mounting block and a non-contact height measuring component respectively installed on the dicing machine mounting plate. A flat push mechanism is installed on the flat push mechanism mounting block, and a protective cover with a side opening is installed and connected to the power output end of the flat push mechanism. The protective cover can be horizontally displaced relative to the dicing machine mounting plate to open and close the protective cover. However, there is relative movement between the side of the non-contact height measuring mounting plate and the protective cover, and there is inevitably a gap between the two. The water mist and cutting residues generated during the dicing process will contaminate the sensor detection surface through the gap. In order to ensure the normal operation of the sensor, it is necessary to first clean the sensor detection surface with water flow and then dry its surface with air flow before each height measurement, resulting in cumbersome non-contact height measurement operations and additional waste of water resources during each non-contact height measurement process. Summary of the Invention

[0004] The purpose of the present invention is to provide a non-contact height measuring device and a dicing machine to simplify non-contact height measurement operations and facilitate water resource conservation.

[0005] To achieve the above object, the present invention provides the following solutions: A non-contact height measuring device, comprising: A height measuring transmitting unit for transmitting a height measurement signal; A height measuring receiving unit for receiving the height measurement signal; The height measuring transmitting unit includes: a first sealed box body, and a transmitting component and a first shielding component arranged inside the first sealed box body; a transmitting hole is opened on the first sealed box body for the height measurement signal to pass through; the first shielding component is used to shield the transmitting hole after height measurement is completed; The height measuring receiving unit includes: a second sealed box body, and a receiving component and a second shielding component arranged inside the second sealed box body; a receiving hole is opened on the second sealed box body for the height measurement signal to pass through; the second shielding component is used to shield the receiving hole after height measurement is completed; A height measurement area is provided between the height measurement transmitting unit and the height measurement receiving unit for placing an object to be measured.

[0006] In an embodiment, the first shielding assembly includes: a first driving device, a first shielding block, and a first elastic reset device. The first sealed box body is provided with a first guiding groove, the first shielding block is arranged in the guiding groove, the first driving device is used to contact one end of the first shielding block, and the other end of the first shielding block is fixedly connected to the first sealed box body through the first elastic reset device; The second shielding assembly includes: a second driving device, a second shielding block, and a second elastic reset device. Second guiding grooves are provided in the second sealed box body, the second shielding block is arranged in the second guiding grooves, the second driving device is used to contact one end of the second shielding block, and the other end of the second shielding block is fixedly connected to the second sealed box body through the second elastic reset device.

[0007] In an embodiment, the first elastic reset device and the second elastic reset device are springs.

[0008] In an embodiment, the first driving device is a first air cylinder, and the second driving device is a second air cylinder.

[0009] In an embodiment, a first signal channel is provided on the first shielding block, and a second signal channel is provided on the second shielding block.

[0010] In an embodiment, the height measurement transmitting unit further includes a first jetting assembly, and the first jetting assembly includes a first air source, a first air valve, and a first air pipe. The first air source is connected to the first air valve, and the first air valve is communicated with the first sealed box body through the first air pipe; The height measurement receiving unit further includes a second jetting assembly, and the second jetting assembly includes a second air source, a second air valve, and a second air pipe. The second air source is connected to the second air valve, and the second air valve is communicated with the second sealed box body through the second air pipe.

[0011] In an embodiment, the transmitting assembly is the transmitting end of a opposed sensor, and the receiving assembly is the receiving end of the opposed sensor.

[0012] In an embodiment, the transmitting end of the opposed sensor is connected to a sensor amplifier through an optical fiber, and a PU air pipe is sleeved outside the optical fiber.

[0013] In one embodiment, the transmitting end of the opposed sensor includes a sensor detection surface of the transmitting end and a transmitting end body; a first chamber and a second chamber are provided inside the first sealed box body, the first chamber and the second chamber are separated by a partition board, the sensor detection surface of the transmitting end is arranged in the first chamber, and the first jetting assembly is connected to the first chamber; the transmitting end body is arranged in the second chamber; The receiving end of the opposed sensor includes a sensor detection surface of the receiving end and a receiving end body; a third chamber and a fourth chamber are provided inside the second sealed box body, the third chamber and the fourth chamber are separated by a partition board, the sensor detection surface of the receiving end is arranged in the third chamber, and the second jetting assembly is connected to the third chamber; the receiving end body is arranged in the fourth chamber.

[0014] The present invention further provides a dicing machine, which includes the non-contact height measurement device mentioned above.

[0015] According to the description of the above solution, the present invention discloses the following technical effects: By providing the first sealed box body and the second sealed box body, an emission hole is opened on the first sealed box body, and a receiving hole is opened on the second sealed box body for the height measurement signal to pass through. When the device is not working, the first shielding assembly and the second shielding assembly are respectively used to shield the emission hole and the receiving hole, so that the transmitting assembly and the receiving assembly are in a sealed environment, avoiding the contamination of the transmitting assembly and the receiving assembly by the water mist and residues generated during the workpiece processing. Therefore, when the device is working, it is not necessary to clean and dry the transmitting assembly and the receiving assembly in advance, which is beneficial to simplifying the non-contact height measurement operation and saving water resources. Description of the Drawings

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0017] Figure 1 Schematic diagram of the non-contact height measurement device provided by the embodiment of the present specification; Figure 2 Cross-sectional view of the first shielding assembly provided by the embodiment of the present specification; Figure 3 Schematic diagram of the structure of the first jetting assembly provided by the embodiment of the present specification; Figure 4 Provided by the embodiment of the present specification Figure 3 Partial enlarged view of A in; Among them, 1 - the first sealed box body, 11 - the emitter assembly joint, 12 - the first jet assembly, 121 - the first jet cavity, 122 - the first air guide groove, 13 - the first shielding assembly joint, 131 - the first cylinder, 132 - the first ejector rod, 133 - the first shielding block, 134 - the first guide groove, 135 - the first elastic reset device, 2 - the second sealed box body, 21 - the receiver assembly joint, 22 - the second jet assembly, 23 - the second shielding assembly joint, 24 - the receiving hole, 3 - the height measurement area, 4 - the height measurement detection hole. Detailed implementation manners

[0018] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0019] As Figures 1 to 4 shown, the embodiment of this specification discloses a non-contact height measurement device, including: a height measurement transmitting unit for transmitting a height measurement signal; a height measurement receiving unit for receiving a height measurement signal; the height measurement transmitting unit includes: a first sealed box body 1 and an emitter assembly and a first shielding assembly disposed inside the first sealed box body 1; a transmitting hole is opened on the first sealed box body 1 for the height measurement signal to pass through; the first shielding assembly is used to block the transmitting hole after the height measurement is completed, so that the emitter assembly is in a sealed environment; the height measurement receiving unit includes: a second sealed box body 2 and a receiver assembly and a second shielding assembly disposed inside the second sealed box body 2; a receiving hole 24 is opened on the second sealed box body 2 for the height measurement signal to pass through; the second shielding assembly is used to block the receiving hole 24 after the height measurement is completed, so that the receiver assembly is in a sealed environment; a height measurement area 3 is provided between the height measurement transmitting unit and the height measurement receiving unit for placing the object to be measured. Among them, both the first sealed box body 1 and the second sealed box body 2 include a box body, a box cover and a sealing ring, and the box body and the box cover are connected through the sealing ring. When in use, when the device is not working, the first shielding assembly and the second shielding assembly are respectively used to block the transmitting hole and the receiving hole 24, so that the emitter assembly and the receiver assembly are in a sealed environment, so as to avoid the emitter assembly and the receiver assembly being polluted by the water mist and residues generated during the workpiece processing. Therefore, when the device is working, there is no need to clean and dry the emitter assembly and the receiver assembly in advance. Therefore, such a setting is beneficial to simplifying the non-contact height measurement operation and saving water resources.

[0020] As Figure 2As shown in the figure, the first shielding component includes: a first driving device, a first shielding block 133, and a first elastic reset device 135. A first guiding groove 134 is provided in the first sealed box body 1. The first shielding block 133 is arranged in the first guiding groove 134. The first guiding groove 134 is used to define the movement path of the first shielding block 133, so that the movement path of the first shielding block 133 is consistent with the movement path of the first driving device. The first driving device is used to contact one end of the first shielding block 133. The other end of the first shielding block 133 is fixedly connected to the first sealed box body 1 through the first elastic reset device 135. The first driving device is used to push the first shielding block 133 to move along the first guiding groove 134 in the direction of the first elastic reset device 135, so as to expose the emission hole. When the first driving device does not extend, the first shielding block 133 blocks the emission hole. The function of the first elastic reset device 135 is: when the first driving device retracts, the first elastic reset device 135 drives the first shielding block 133 to return to the initial position, that is, the first shielding block 133 is in the state of blocking the emission hole. At the same time, the setting of the first elastic reset device 135 can also play a role in buffering the first driving device. The second shielding component includes: a second driving device, a second shielding block, and a second elastic reset device. Second guiding grooves are provided in the second sealed box body 2. The second shielding block is arranged in the second guiding groove. The second driving device is used to contact one end of the second shielding block. The other end of the second shielding block is fixedly connected to the second sealed box body 2 through the second elastic reset device. The second driving device is used to push the second shielding block to move along the second guiding groove in the direction of the second elastic reset device, so as to expose the receiving hole 24. The second shielding component has the same structural composition as the first shielding component, and the functions realized by the corresponding components are also the same, which will not be elaborated here.

[0021] In the embodiments of this specification, both the first elastic reset device 135 and the second elastic reset device are springs, and other devices with elastic reset functions can also be selected according to actual needs.

[0022] In the embodiments of this specification, the first driving device is a first cylinder 131, and the second driving device is a second cylinder. Hydraulic cylinders, linear motors, etc. can be selected according to actual needs. The first shielding component and the second shielding component are respectively connected to compressed air through a first shielding component joint 13 and a second shielding component joint 23.

[0023] A first signal channel is provided on the first shielding block 133, and a second signal channel is provided on the second shielding block. The first signal channel and the second signal channel can be provided in the form of a notch. Taking the first cylinder 131 as an example, when the first ejector rod 132 of the first cylinder 131 extends, the first signal channel communicates with the emission hole. It is also possible to adopt the method that when the first ejector rod 132 of the first cylinder 131 extends, the first shielding block 133 blocks the emission hole, and when the first ejector rod 132 of the first cylinder 131 retracts, the first signal channel communicates with the emission hole to control whether the first signal channel communicates with the emission hole.

[0024] As Figure 3 and Figure 4 shown, the height measurement emission unit further includes a first jet assembly 12. The first jet assembly 12 includes a first gas source, a first gas valve, and a first gas pipeline. The first gas source is connected to the first gas valve, and the first gas valve is connected to the first sealed box 1 through the first gas pipeline to input the gas in the first gas source into the first sealed box 1, so that the inside of the first sealed box 1 is in a positive pressure state, avoiding the emission assembly being exposed to the environment of water mist and cutting residues. The first gas source can be a on-site compressed gas source, and the on-off of the first gas source is realized through the first gas valve. For example, the compressed gas source is cut off by the first gas valve after the equipment stops. The height measurement receiving unit further includes a second jet assembly 22. The second jet assembly 22 includes a second gas source, a second gas valve, and a second gas pipeline. The second gas source is connected to the second gas valve, and the second gas valve is connected to the second sealed box 2 through the second gas pipeline to input the gas in the second gas source into the second sealed box 2, so that the inside of the second sealed box 2 is in a positive pressure state, avoiding the receiving assembly being exposed to the environment of water mist and cutting residues. The second gas source can be a compressed gas source, and the on-off of the second gas source is realized through the second gas valve. For example, the compressed gas source is cut off by the second gas valve after the equipment stops. Therefore, when the emission hole and the receiving hole 24 are exposed for height measurement, the emission hole will eject gas outside the first sealed box 1, and the receiving hole 24 will eject gas outside the second sealed box 2 to blow away residues and water mist. Such a setting can not only prevent the residues and water mist diffused in the environment from entering the first sealed box 1 and the second sealed box 2 through the emission hole and the receiving hole 24 and polluting the emission assembly and the receiving assembly, but also avoid the residues and water mist from affecting the height measurement signal. That is, the ejected gas jet pushes the water mist on the detection beam path away, eliminating the influence of the scattering caused by the water mist on the height measurement signal, which is beneficial to improving the accuracy of height measurement. The first jet assembly 12 further includes a first jet cavity 121 and a first air guide groove 122 (as Figure 4As shown in the figure, taking the jetting process of the first jetting assembly 12 as an example, specifically, the gas enters the first jetting cavity 121 through the connector of the first jetting assembly 12, passes through the first air guide groove 122 and the first signal channel on the first shielding block 133, and finally sprays out from the emission hole. Both the first air guide groove 122 and the height measurement detection hole 4 are arranged on the first sealed box body 1. One end of the height measurement detection hole 4 close to the first signal channel is communicated with the first signal channel. The height measurement detection hole 4 is used to detect the passing of the light beam. After the detection light beam passes through the height measurement detection hole and the first signal channel, it shoots out from the emission hole. One end of the height measurement detection hole 4 far from the first signal channel is sealed by the sensor detection surface at the emission end to prevent the gas from spraying out from the end of the height measurement detection hole 4 far from the first signal channel and reduce gas consumption.

[0025] In the embodiment of the present specification, the emission assembly is the emission end of the opposed sensor, and the receiving assembly is the receiving end of the opposed sensor.

[0026] The emission end of the opposed sensor is connected to the sensor amplifier through an optical fiber. The optical fiber passes through the connector 11 of the emission assembly. A PU air pipe is sleeved outside the optical fiber. The setting of the PU air pipe helps to avoid damage caused by excessive bending of the optical fiber and can also isolate the device from water mist. Similarly, the optical fiber at the receiving end of the opposed sensor passes through the connector 21 of the receiving assembly, and a PU air pipe is sleeved outside the optical fiber, which is beneficial to isolating the device from water mist.

[0027] The emission end of the opposed sensor includes the sensor detection surface at the emission end and the emission end body; a first chamber and a second chamber are arranged inside the first sealed box body 1. The first chamber and the second chamber are separated by a partition. Both the first air guide groove 122 and the height measurement detection hole 4 are arranged on the partition between the first chamber and the second chamber. The sensor detection surface at the emission end is arranged in the first chamber. The first jetting assembly 12 is connected to the first chamber and is used to provide a positive pressure environment for the first chamber; the emission end body is arranged in the second chamber; The receiving end of the opposed sensor includes the sensor detection surface at the receiving end and the receiving end body; a third chamber and a fourth chamber are arranged inside the second sealed box body 2. The third chamber and the fourth chamber are separated by a partition. The sensor detection surface at the receiving end is arranged in the third chamber. The second jetting assembly 22 is connected to the third chamber and is used to provide a positive pressure environment for the third chamber; the receiving end body is arranged in the fourth chamber. By setting the first sealed box body 1 into the first chamber and the second chamber, and setting the second sealed box body 2 into the third chamber and the fourth chamber, only the first chamber and the third chamber are inflated. Compared with inflating the entire first sealed box body 1 and the second sealed box body 2, the space that needs to be inflated is reduced, which is beneficial to reducing the inflation amount and lowering the cost.

[0028] The present invention also provides a dicing machine, including the non-contact height measurement device mentioned above.

[0029] In the present specification, the various embodiments are described in a progressive manner. Each embodiment focuses on the differences from other embodiments. For the same or similar parts among the various embodiments, reference can be made to each other. For the system disclosed in the embodiments, since it corresponds to the method disclosed in the embodiments, the description is relatively simple. For the relevant parts, reference can be made to the description in the method section.

[0030] In this article, specific examples are used to elaborate on the principles and implementation manners of the present invention. The descriptions of the above embodiments are only used to help understand the method of the present invention and its core idea. At the same time, for those of ordinary skill in the art, according to the idea of the present invention, there will be changes in the specific implementation manners and application scopes. In summary, the content of this specification should not be construed as a limitation on the present invention.

Claims

1. A non-contact height measuring device, characterized in that: include: A height measurement transmitting unit, used for transmitting a height measurement signal; A height measurement receiving unit, used for receiving the height measurement signal; The height measurement transmitting unit comprises: a first sealed box, and a transmitting assembly and a first shielding assembly arranged inside the first sealed box; a transmitting hole is provided on the first sealed box for the height measurement signal to pass through; the first shielding assembly is used to shield the transmitting hole after the height measurement is completed; The height measurement receiving unit comprises: a second sealed box and a receiving component and a second shielding component arranged inside the second sealed box; a receiving hole is provided on the second sealed box for the height measurement signal to pass through; the second shielding component is used to shield the receiving hole after the height measurement is completed; A height measurement area is provided between the height measurement transmitting unit and the height measurement receiving unit for placing the object to be measured.

2. The non-contact height measuring device according to claim 1, characterized in that: The first shielding assembly comprises: a first driving device, a first shielding block and a first elastic reset device, a first guide groove is provided in the first closed box, the first shielding block is provided in the first guide groove, the first driving device is used to contact one end of the first shielding block, and the other end of the first shielding block is fixedly connected to the first closed box through the first elastic reset device; The second shielding assembly includes: a second driving device, a second shielding block and a second elastic reset device. A second guide groove is provided in the second sealed box, and the second shielding block is arranged in the second guide groove. The second driving device is used to contact one end of the second shielding block, and the other end of the second shielding block is fixedly connected to the second sealed box through the second elastic reset device.

3. The non-contact height measuring device according to claim 2, characterized in that: The first elastic reset device and the second elastic reset device are both springs.

4. The non-contact height measuring device according to claim 2, characterized in that: The first driving device is a first cylinder, and the second driving device is a second cylinder.

5. The non-contact height measuring device according to claim 2, characterized in that: The first shielding block is provided with a first signal channel; the second shielding block is provided with a second signal channel.

6. The non-contact height measuring device according to claim 1, characterized in that: The height measurement transmitting unit further includes a first jet assembly, which includes a first gas source, a first gas valve and a first gas pipeline, wherein the first gas source is connected to the first gas valve, and the first gas valve is connected to the first closed box through the first gas pipeline; The height measurement receiving unit also includes a second jet assembly, which includes a second gas source, a second gas valve and a second gas pipe. The second gas source is connected to the second gas valve, and the second gas valve is connected to the second closed box through the second gas pipe.

7. The non-contact height measuring device according to claim 6, characterized in that: The transmitting component is a transmitting end of the through-beam sensor, and the receiving component is a receiving end of the through-beam sensor.

8. The non-contact height measuring device according to claim 7, characterized in that: The transmitting end of the through-beam sensor is connected to the sensor amplifier through an optical fiber, and a PU air tube is sheathed outside the optical fiber.

9. The non-contact height measuring device according to claim 7, characterized in that: The transmitting end of the through-beam sensor includes a sensor detection surface of the transmitting end and a transmitting end body; a first chamber and a second chamber are arranged inside the first closed box, the first chamber and the second chamber are separated by a partition, the sensor detection surface of the transmitting end is arranged in the first chamber, and the first jet assembly is connected to the first chamber; the transmitting end body is arranged in the second chamber; The receiving end of the through-beam sensor includes a sensor detection surface of the receiving end and a receiving end body; a third chamber and a fourth chamber are arranged inside the second sealed box, the third chamber and the fourth chamber are separated by a partition, the sensor detection surface of the receiving end is arranged in the third chamber, and the second jet assembly is connected to the third chamber; the receiving end body is arranged in the fourth chamber.

10. A dicing machine, characterized in that: A non-contact height measuring device comprising any one of claims 1 to 9.

Images