CN218756153U - Crystal bar length and diameter detection structure - Google Patents
Crystal bar length and diameter detection structure Download PDFInfo
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- CN218756153U CN218756153U CN202222521827.XU CN202222521827U CN218756153U CN 218756153 U CN218756153 U CN 218756153U CN 202222521827 U CN202222521827 U CN 202222521827U CN 218756153 U CN218756153 U CN 218756153U
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- laser correlation
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Abstract
The utility model provides a crystal bar length diameter detects structure, the vertical placing of crystal bar is on the revolving stage that detects the platform, including length measuring device, diameter measuring device and drive arrangement, length measuring device includes laser ranging sensor, sets up the top of crystal bar, the last support that is equipped with of laser ranging sensor, diameter measuring device, including laser correlation sensor, the symmetry sets up the crystal bar is not equipped with the both sides of support, laser correlation sensor one end is connected with drive module, can drive laser correlation sensor removes, drive module with the leg joint, laser correlation sensor with drive module's link is equipped with the displacement sensing, drive arrangement sets up can drive on the support drive module reciprocates. The beneficial effects of the utility model are that realized the automated inspection of crystal bar length and diameter, improved measurement accuracy and detection efficiency.
Description
Technical Field
The utility model belongs to the technical field of the crystal bar detects, especially, relate to a crystal bar length diameter detects structure.
Background
The crystal bar is a cylindrical bar body generated by pulling a single crystal through a single crystal furnace, and the length and the diameter of the crystal bar need to be measured in the production process. In the prior art, measurement is usually completed manually, a caliper is used for measuring the diameter of a crystal bar, and a tape measure is used for measuring the length of the crystal bar, so that the problems of large measurement error and low detection efficiency exist.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model provides a crystal bar length diameter detects structure, and the effectual measuring error that has solved is big, and the problem that detection efficiency is low has overcome prior art's not enough.
The utility model adopts the technical proposal that: the utility model provides a crystal bar length diameter detects structure, the vertical placing of crystal bar is on the revolving stage that detects the platform, includes:
the length measuring device comprises a laser ranging sensor which is arranged above the crystal bar, a support is arranged on the laser ranging sensor, and the support is positioned on one side of the crystal bar;
the diameter measuring device comprises laser correlation sensors which are symmetrically arranged on two sides of the crystal bar, wherein the two sides of the crystal bar are not provided with the support, one end, close to the support, of each laser correlation sensor is connected with a transmission module which can drive the laser correlation sensors to be close to or far away from the crystal bar, the transmission module is connected with the support, and displacement sensors are arranged at the connecting ends of the laser correlation sensors and the transmission modules and used for measuring the distance between the laser correlation sensors;
and the driving device is arranged on the support and can drive the transmission module to move up and down along the support.
Furthermore, the transmission module comprises a module body, the module body is connected with the support, a first lead screw and a second lead screw are arranged on the module body, one side, close to the transmission module, of the laser correlation sensor is respectively connected with the first lead screw and the second lead screw, and the first lead screw and the second lead screw can respectively drive the laser correlation sensor to be close to or far away from the crystal bar.
Further, be equipped with first motor and second motor on the module body, first motor and second motor can drive respectively first lead screw and second lead screw counter-rotation to drive laser correlation sensor is close to or keeps away from the crystal bar.
Furthermore, a first guide rail is arranged on the module body, a first sliding block is arranged at one end, close to the transmission module, of the laser correlation sensor, and the laser correlation sensor can drive the first sliding block to move along the first guide rail when moving.
Furthermore, inner end plates are arranged at the ends, close to the crystal bar, of the first lead screw and the second lead screw, the inner end plates are connected with the module body, correction rods are arranged on the inner end plates, a stop block is arranged at the end, close to the transmission module, of the laser correlation sensor, two end faces of the guide rod can be in contact with the stop block, and the collision between the connection ends of the laser correlation sensor and the first lead screw and the connection ends of the laser correlation sensor and the second lead screw and the inner end plates is prevented.
Furthermore, the driving device comprises a third lead screw, the third lead screw is connected with the transmission module and can drive the transmission module to move up and down, one end of the third lead screw is connected with the top of the support, and the other end of the third lead screw is connected with the detection table board.
Furthermore, a third motor is arranged at the connecting end of the third lead screw and the detection table board, and the third motor drives the third lead screw to drive the transmission module to move up and down.
Furthermore, a second guide rail is arranged on the support, a second sliding block is arranged on one side, close to the support, of the transmission module, and when the transmission module moves up and down, the second sliding block can move along the second guide rail.
Furthermore, a head sealing plate is arranged at the top of the second guide rail, and anti-collision glue is arranged on the head sealing plate.
Furthermore, a buffer device is arranged between the bottom of the transmission module and the bottom of the support.
The utility model has the advantages and positive effects be: by adopting the technical scheme, the automatic detection of the length and the diameter of the crystal bar is realized, and the measurement precision and the detection efficiency are improved.
Drawings
Fig. 1 is a schematic view of the overall structure of a crystal rod length and diameter detection structure according to an embodiment of the present invention.
Fig. 2 is a schematic view of an overall structure of a crystal rod length and diameter detection structure according to an embodiment of the present invention.
Fig. 3 is a schematic view of the overall structure of a crystal rod length and diameter detection structure according to an embodiment of the present invention.
Fig. 4 is a front view of a length and diameter detecting structure of a crystal rod according to an embodiment of the present invention.
Fig. 5 is a rear view of a crystal rod length and diameter detecting structure according to an embodiment of the present invention.
In the figure:
10. length measuring device 11, laser distance measuring sensor 20, diameter measuring device
21. Laser correlation sensor 22, transmission module 221 and module body
222. First drag chain 223, first motor 224, second motor
225. First guide rail 226, inner end plate 227 and support
228. Stop 229, connecting piece 23 and mounting plate
24. Connecting plate 25, first slider 26, magnetic grid chi
27. First lead screw 28, second lead screw 29 and correcting rod
30. A driving device 31, a third lead screw 32, and a third motor
33. Second guide rail 34, second slide block 35 and second drag chain
36. Sealing head plate 37, anti-collision rubber 38 and buffer
40. Support 50, examine test table 60, revolving stage
70. Crystal bar
Detailed Description
The embodiment of the utility model provides a crystal bar length diameter detects structure, it is right below to combine the figure the embodiment of the utility model makes the explanation.
As shown in fig. 1-5, an embodiment of the present invention provides a structure for measuring length and diameter of a crystal bar, in which the crystal bar 70 is vertically placed on a rotating table 60 of a measuring table 50, and the structure for measuring comprises a length measuring device 10, a diameter measuring device 20, and a driving device 30. The length measuring device 10 comprises a laser ranging sensor 11 arranged above the crystal bar 70 and used for measuring the length of the crystal bar 70, wherein a support 40 is arranged on the laser ranging sensor 11, and the support 40 is arranged on one side of the crystal bar 70 and arranged on the detection table 50. The laser ranging sensor 11 is connected with the top of the support 40 and arranged above the rotating platform 60, and after the crystal bar 70 is placed, the laser ranging sensor 11 is located above the upper end face of the crystal bar 70, and the length of the crystal bar 70 can be obtained through laser ranging. The diameter measuring device 20 comprises laser correlation sensors 21 symmetrically arranged on two sides of the crystal bar 70, which are not provided with the support 40, and the transmitting end and the receiving end of the laser correlation sensors 21 are positioned on the same side of the crystal bar 70 to perform laser correlation. The end that laser correlation sensor 21 is close to support 40 is connected with transmission module 22, can drive laser correlation sensor 21 and be close to or keep away from crystal bar 70, and when laser correlation sensor 21 was close to crystal bar 70, crystal bar 70 sheltered from laser to measure the distance that crystal bar 70 was sheltered from. The transmission module 22 is connected with the support 40, and the connection end of the laser correlation sensor 21 and the transmission module 22 is provided with a displacement sensor for measuring the distance between the laser correlation sensors 21 positioned at the two sides of the crystal bar 70. The displacement sensor can be a magnetic grating ruler or a grating ruler. The diameter of the ingot 70 can be calculated from the distance by which the ingot 70 is shielded and the distance between the laser correlation sensors 21. The driving device 30 is disposed on the bracket 40 and drives the transmission module 22 to move up and down along the bracket 40.
Specifically, the transmission module 22 includes a module body 221, a first lead screw 27 and a second lead screw 28 are disposed on the module body 221, one side of the laser correlation sensor 21 close to the transmission module 22 is respectively connected to the first lead screw 27 and the second lead screw 28, and the first lead screw 27 and the second lead screw 28 can respectively drive the laser correlation sensors 21 on both sides to be close to or far away from the ingot 70. In this embodiment, the module body 221 is a cavity with an opening on one side, the opening faces the ingot 70, the first lead screw 27 and the second lead screw are disposed inside the cavity, and the first lead screw 27 and the second lead screw 28 are disposed horizontally and coaxially. The transmitting end and the receiving end of the laser correlation sensor 21 positioned at the same side are arranged on the same mounting plate 23, and a sensor protection cover is arranged outside the laser correlation sensor 21 in order to ensure the measurement accuracy of the laser correlation sensor 21. The protective shield should not obstruct the laser's correlation. One end of the mounting plate 23 close to the transmission module 22 is provided with a connecting plate 24, and the other end of the connecting plate 24 is connected with a moving nut of a first lead screw 27 or a second lead screw 28. The first lead screw 27 and the second lead screw 28 can drive the laser correlation sensors 21 on two sides to move on the same horizontal plane, and the laser correlation sensors are close to or far away from the crystal bar 70. Because the correlation sensor is for module body 221 is the removal, the electric line that the higher authority is connected is in order to remove, in order to avoid electric line to pull and damage, set up first tow chain 222 at the one end that connecting plate 24 is close to module body 221, first tow chain 222 is placed on module body 221, and one end is fixed with connecting plate 24, and one end is fixed with module body 221, with electric line built-in first tow chain 222, when connecting plate 24 removed, drive first tow chain 222 and remove.
Specifically, a first motor 223 and a second motor 224 are arranged above the module body 221, and the first motor 223 and the second motor 224 can respectively drive the first lead screw 27 and the second lead screw 28 to rotate in opposite directions, so as to drive the laser correlation sensors 21 on the two sides to approach or leave the ingot 70. In this embodiment, the first motor 223 is connected to a first speed reducer, a belt wheel is disposed on the first speed reducer, a belt wheel is disposed at the driving end of the first lead screw 27, and a belt transmission is adopted between the two belt wheels. In order to ensure the stable and undisturbed transmission, a belt protective cover is arranged on the belt. The second motor 224 is connected to a second speed reducer, a belt wheel is arranged on the second speed reducer, a belt wheel is arranged at the driving end of the second screw 28, and the two belt wheels are connected by a belt. In order to ensure the transmission stability and stability without interference, a belt protective cover is arranged on the belt. Since the laser correlation sensors 21 on both sides need to move relatively, the rotation directions of the first lead screw 27 and the second lead screw 28 are opposite.
Specifically, a first guide rail 225 is arranged on the module body 221, a first sliding block 25 is arranged at one end, close to the transmission module 22, of the laser correlation sensor 21, and the first sliding block 25 can be driven to move along the first guide rail 225 when the laser correlation sensor 21 moves. The number of first guide rails 225 is not limited. In this embodiment, two first guide rails 225 are provided, and are provided on both upper and lower sides of the first lead screw 27 and the second lead screw 28. Corresponding to the position of the first guide rail 225, the connecting plates 24 are provided with first sliding blocks 25, that is, each connecting plate 24 is provided with two first sliding blocks 25 which are respectively connected with the two first guide rails 225. The laser correlation sensor 21 moves to drive the connecting plate 24 and the first slider 25 to move along the first guide rail 225.
Specifically, an inner end plate 226 is disposed at one end of the first lead screw 27 and the second lead screw 28 close to the ingot 70, the inner end plate 226 is connected to the module body 221, a correction rod 29 is disposed on the inner end plate 226, a stop block 228 is disposed at one end of the laser correlation sensor 21 close to the transmission module 22, two end surfaces of the correction rod 29 can contact with the stop block 228, and the collision between the connection ends of the laser correlation sensor 21 and the first lead screw 27 and the second lead screw 28 and the inner end plate 226 is prevented. In this embodiment, the driving ends of the first lead screw 27 and the second lead screw 28 are connected to the side wall of the cavity of the module body 221, the other end is connected to the inner end plate 226, and the inner end plate 226 is vertically fixed in the cavity of the module body 221. A correction rod 29 penetrates through the upper parts of the two inner end plates 226, and the correction rod 29 is arranged in parallel with the first lead screw 27 and the second lead screw. The correction lever 29 is centrally provided with a support 227 for supporting the correction lever 29 to be horizontally placed. A stopper 228 is disposed on one side of the connecting plate 24 close to the ingot 70, and when the first lead screw 27 and the second lead screw 28 drive the laser correlation sensor 21 to move to the limit position, that is, the end portions of the first lead screw 27 and the second lead screw 28, the stopper 228 on the connecting plate 24 contacts with two end surfaces of the calibration rod 29, so as to prevent the connecting plate 24 from colliding with the inner end plate 226 and affecting the measurement accuracy of the laser correlation sensor 21. Meanwhile, a magnetic grid ruler 26 is installed on the upper portion of one end of the connecting plate 24 close to the module body 221, and is used for measuring the distance between the laser correlation sensors 21 on the two sides. The initial distance of the laser correlation sensors 21 on both sides is known, and the magnetic scale 26 can measure the horizontal moving distance of the laser correlation sensors 21, i.e. the distance between the laser correlation sensors 21 on both sides. When the laser correlation sensor 21 is moved to the extreme position, that is, when the stopper 228 comes into contact with the end surface of the correction rod 29, the magnetic scale 26 is corrected. Before each measurement, the magnetic scale 26 is corrected before the measurement. Magnetic scale 26 is conventional and will not be described in detail herein.
Specifically, the third screw 31 is arranged on the support 40, and is connected with the transmission module 22, so as to drive the transmission module 22 to move up and down, one end of the third screw 31 is connected with the top of the support 40, and the other end is connected with the surface of the detection table 50. In this embodiment, a third screw 31 is vertically disposed in the middle of the bracket 40, two ends of the third screw 31 are provided with a support seat, one end of the support seat is connected to the top of the bracket 40, and the other end of the support seat penetrates through the bottom of the bracket 40 and the detection table 50. A connecting piece 229 is arranged at the position, opposite to the third lead screw, of one side, far away from the crystal bar 70, of the module body 221, the connecting piece 229 is connected with a movable nut on the third lead screw 31, and the movable nut can drive the whole transmission module 22 to move up and down when moving up and down.
Specifically, a third motor 32 is arranged at a connecting end of the third screw 31 and the surface of the detection table 50, and the third motor 32 drives the third screw 31 to drive the transmission module 22 to move up and down. In this embodiment, the lower end of the third lead screw 31 passes through the detection platform 50 and is connected with a belt pulley, the bottom of the detection platform 50 is provided with the third motor 32, the third motor 32 is provided with a third speed reducer, the speed reducer is provided with a belt pulley, the belt connects the two belt pulleys, and the third motor 32 stably drives the screw of the third lead screw 31 to rotate through the transmission of the belt, so as to drive the movable nut of the third lead screw 31 to move up and down.
Specifically, the bracket 40 is provided with a second guide rail 33, one side of the transmission module 22 close to the bracket 40 is provided with a second sliding block 34, and when the transmission module 22 moves up and down, the second sliding block 34 can move along the second guide rail 33. In this embodiment, two vertical second guide rails 33 are disposed on two vertical sides of the bracket 40, on the side facing the transmission module 22, and second sliders 34 are disposed on the module body 221 at positions corresponding to the second guide rails 33, on the side facing the bracket 40, and two second sliders 34 are disposed on each second guide rail 33. When the transmission module 22 moves, the second slide block 34 is driven to move along the second guide rail 33. Since the transmission module 22 moves relative to the entire bracket 40, the electrical wires connected thereto also move along with the transmission module 22, the second tow chain 35 is disposed on the side of the bracket 40, the electrical wires are embedded therein, one end of the second tow chain 35 is connected to the bracket 40, and the other end is connected to the module body 221, so that when the transmission module 22 moves, the second tow chain 35 is driven to move.
Specifically, in order to prevent the second slider 34 from sliding out of the second guide rail 33, a head sealing plate 36 is arranged on the top of the second guide rail 33, an anti-collision rubber 37 is arranged on the head sealing plate 36, and the shape of the anti-collision rubber 37 is not limited and can be a cylinder, a cuboid or a cube.
Specifically, in order to prevent the transmission module 22 from moving downward to the limit position and colliding with the bottom of the bracket 40 and the inspection table 50, a buffer device is provided between the bottom of the transmission module 22 and the bottom of the bracket 40. In this embodiment, an adjustable hydraulic buffer 38 is installed at the bottom of one side of the module body 221 facing the bracket 40, one end of the buffer 38 contacts with the base of the bracket 40, and when the transmission module 22 descends to the limit position, the buffer 38 plays a role of buffering and limiting.
The working process of measuring the length of the crystal bar comprises the following steps:
the length of the ingot 70 can be measured by the laser ranging sensor 11 located above the rotating table 60 by vertically placing the ingot 70 on the rotating table 60 of the inspection table 50. In some embodiments, the laser distance measuring sensor 11 is projected on 1/4 diameter of the end surface of the crystal bar 70, the rotating platform 60 drives the crystal bar 70 to rotate, and the laser distance measuring sensor 11 can scan the circumference of the 1/4 diameter to measure the highest point and the lowest point, i.e. the maximum value and the minimum value of the height. And calculating to obtain the verticality deviation of the upper end surface and the lower end surface of the crystal bar 70. And the verticality deviation between the upper end surface and the lower end surface is ensured to be less than 1.5 degrees, and then the diameter measurement is carried out.
Workflow for measuring ingot diameter, in some embodiments:
1. the ingot 70 is vertically placed on the rotating table 60 of the inspection table 50.
2. The transmission module 22 drives the laser correlation sensor 21 to be close to the crystal bar 70, the crystal bar 70 can shield the laser, and when the crystal bar 70 shields 1/2 of the laser surface width, the transmission module 22 stops moving.
3. The transmission module 22 is moved downwards along the support 40 from the upper end surface of the crystal bar 70, so as to drive the laser correlation sensor 21 to move downwards. In the course of the downward movement, the height of each movement is set.
4. When the laser correlation sensor 21 reaches the preset height, the rotating table 60 rotates once, and the laser correlation sensor 21 completes one diameter scanning measurement. During scanning, the distance between the laser correlation sensors 21 on both sides of the ingot 70 can be measured by the magnetic scale 26. The laser correlation sensor 21 can measure the distance between the two sides of the crystal bar 70 which are shielded. The diameter of the ingot 70 at the height can be calculated from the distance between the two sides of the ingot 70 which are shielded and the distance between the laser correlation sensors 21.
5. And (4) downwards moving the laser correlation sensor 21 to the next preset height, and repeating the step (4) until the set scanning times are finished and the diameter scanning is finished.
6. And calculating by software to generate a cylindrical mesh model.
7. And (3) analyzing and measuring by software to obtain a circle formed by connecting points on each same latitude, wherein each circle on the same latitude can be regarded as a circle matched with the crystal bar, so that the maximum value and the minimum value of the diameter are obtained. And (4) performing segmentation integration on each circle at the same latitude, and obtaining diameter parameters of each section of the crystal bar after the integration.
In certain embodiments:
1. the ingot 70 is vertically placed on the rotating table 60 of the inspection stage 50.
2. The transmission module 22 drives the laser correlation sensor 21 to be close to the crystal bar 70, the crystal bar 70 can shield the laser, and when the crystal bar 70 shields 1/2 of the laser surface width, the transmission module 22 stops moving.
3. And (3) moving the transmission module 22 downwards along the support 40 to drive the laser correlation sensor 21 to move downwards from the upper end surface to the lower end surface of the crystal bar 70, thereby completing one diameter scanning measurement.
4. The rotary table 60 rotates by an angle.
5. The laser correlation sensor 21 moves upwards from the lower end surface of the crystal bar 70 to the upper end surface, and one diameter scanning measurement is completed.
6. The rotating table 60 is rotated by an angle.
7. And repeating the four steps until the crystal bar 70 rotates 360 degrees and the diameter scanning is finished.
8. And calculating by software to generate a cylindrical mesh model.
9. And (3) obtaining a circle formed by connecting points on the same latitude through software analysis and measurement, wherein each circle on the same latitude can be regarded as a circle matched with the crystal bar, so that the maximum value and the minimum value of the diameter are obtained. And (4) performing segmentation integration on each circle at the same latitude, and obtaining diameter parameters of each section of the crystal bar after the integration.
The utility model has the advantages and positive effects that:
through the setting of length measurement device 10 and diameter measurement device 20, replaced artifical measurement, realized the automated inspection of crystal bar length and diameter, improved detection efficiency, establish the grid model through the scanning of laser correlation sensor 21 to the diameter, improved measurement accuracy.
The above detailed description of the embodiments of the present invention is only for the purpose of describing the preferred embodiments of the present invention, and should not be construed as limiting the scope of the present invention. The equivalent changes and improvements made according to the application scope of the present invention should be still included in the patent coverage of the present invention.
Claims (10)
1. The utility model provides a crystal bar length diameter detects structure, the vertical placing of crystal bar is on the revolving stage that detects the platform, its characterized in that includes:
the length measuring device comprises a laser ranging sensor which is arranged above the crystal bar, a support is arranged on the laser ranging sensor, and the support is positioned on one side of the crystal bar;
the diameter measuring device comprises laser correlation sensors which are symmetrically arranged on two sides of the crystal bar, wherein the two sides of the crystal bar are not provided with the support, one end, close to the support, of each laser correlation sensor is connected with a transmission module which can drive the laser correlation sensors to be close to or far away from the crystal bar, the transmission module is connected with the support, and displacement sensors are arranged at the connecting ends of the laser correlation sensors and the transmission modules and used for measuring the distance between the laser correlation sensors;
and the driving device is arranged on the support and can drive the transmission module to move up and down along the support.
2. The crystal bar length and diameter detecting structure according to claim 1, wherein: the transmission module comprises a module body, the module body is connected with the support, a first lead screw and a second lead screw are arranged on the module body, one side, close to the transmission module, of the laser correlation sensor is respectively connected with the first lead screw and the second lead screw, and the first lead screw and the second lead screw can respectively drive the laser correlation sensor to be close to or far away from the crystal bar.
3. The crystal rod length and diameter detecting structure of claim 2, wherein: the module body is provided with a first motor and a second motor, and the first motor and the second motor can respectively drive the first lead screw and the second lead screw to rotate reversely, so that the laser correlation sensor is driven to be close to or far away from the crystal bar.
4. The crystal rod length and diameter detecting structure of claim 2, wherein: the module comprises a module body and is characterized in that a first guide rail is arranged on the module body, a first sliding block is arranged at one end, close to the transmission module, of the laser correlation sensor, and the laser correlation sensor can drive the first sliding block to move along the first guide rail when moving.
5. The crystal rod length and diameter detecting structure of claim 2, wherein: an inner end plate is arranged at one end, close to the crystal bar, of the first lead screw and the second lead screw, the inner end plate is connected with the module body, a correcting rod is arranged on the inner end plate, a stop block is arranged at one end, close to the transmission module, of the laser correlation sensor, two end faces of the correcting rod can be in contact with the stop block, and the collision between the connecting end of the laser correlation sensor and the first lead screw and the connecting end of the laser correlation sensor and the second lead screw and the inner end plate is prevented.
6. The crystal rod length and diameter detecting structure of claim 1, wherein: the driving device comprises a third lead screw which is connected with the transmission module and can drive the transmission module to move up and down, one end of the third lead screw is connected with the top of the support, and the other end of the third lead screw is connected with the detection table board.
7. The crystal rod length and diameter detecting structure of claim 6, wherein: and a third motor is arranged at the connecting end of the third screw rod and the detection table board, and the third motor drives the third screw rod to drive the transmission module to move up and down.
8. The crystal bar length and diameter detecting structure according to claim 1, wherein: the support is provided with a second guide rail, one side of the transmission module, which is close to the support, is provided with a second sliding block, and when the transmission module moves up and down, the second sliding block can move along the second guide rail.
9. The crystal rod length and diameter detecting structure of claim 8, wherein: and a head sealing plate is arranged at the top of the second guide rail, and anti-collision glue is arranged on the head sealing plate.
10. The crystal rod length and diameter detecting structure of claim 1, wherein: and a buffer device is arranged between the bottom of the transmission module and the bottom of the bracket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222521827.XU CN218756153U (en) | 2022-09-20 | 2022-09-20 | Crystal bar length and diameter detection structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222521827.XU CN218756153U (en) | 2022-09-20 | 2022-09-20 | Crystal bar length and diameter detection structure |
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| Publication Number | Publication Date |
|---|---|
| CN218756153U true CN218756153U (en) | 2023-03-28 |
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ID=85697016
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222521827.XU Active CN218756153U (en) | 2022-09-20 | 2022-09-20 | Crystal bar length and diameter detection structure |
Country Status (1)
| Country | Link |
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| CN (1) | CN218756153U (en) |
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2022
- 2022-09-20 CN CN202222521827.XU patent/CN218756153U/en active Active
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