CN220432625U - Polishing device for quartz glass - Google Patents
Polishing device for quartz glass Download PDFInfo
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- CN220432625U CN220432625U CN202321699135.2U CN202321699135U CN220432625U CN 220432625 U CN220432625 U CN 220432625U CN 202321699135 U CN202321699135 U CN 202321699135U CN 220432625 U CN220432625 U CN 220432625U
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- Prior art keywords
- polished
- tray
- product
- quartz glass
- driving mechanism
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- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 title claims abstract description 65
- 238000005498 polishing Methods 0.000 title claims abstract description 44
- 230000007246 mechanism Effects 0.000 claims abstract description 46
- 239000007789 gas Substances 0.000 claims abstract description 44
- 239000002737 fuel gas Substances 0.000 claims abstract description 11
- 238000005507 spraying Methods 0.000 claims description 6
- 238000007524 flame polishing Methods 0.000 abstract description 3
- 239000007921 spray Substances 0.000 description 4
- 238000005265 energy consumption Methods 0.000 description 3
- 238000003754 machining Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229910000746 Structural steel Inorganic materials 0.000 description 2
- 229910002804 graphite Inorganic materials 0.000 description 2
- 239000010439 graphite Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 238000007517 polishing process Methods 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000003028 elevating effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000013307 optical fiber Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Surface Treatment Of Glass (AREA)
Abstract
The utility model provides a polishing device for quartz glass, which is horizontally arranged on a tray, so that a product to be polished is borne on the upper surface of the tray; a rotation driving mechanism connected to the tray and driving the tray to rotate; a gas delivery pipe provided above the tray, and having a distal end portion extending downward to be close to a product to be polished; a torch which is arranged at the tail end of the fuel gas conveying pipeline; and the lifting driving mechanism is connected with the gas conveying pipeline and used for driving the gas conveying pipeline to reciprocate. According to the technical scheme, the product to be polished can rotate around the shaft through the driving of the tray, and the product to be polished can be subjected to flame polishing by controlling the lifting of the blast lamp to reciprocate in the vertical direction, so that the product to be polished can be rapidly and conveniently polished comprehensively, and the processing efficiency is improved.
Description
Technical Field
Embodiments of the present disclosure relate generally to the technical field of quartz glass processing equipment, and more particularly, to a polishing apparatus for quartz glass.
Background
The quartz glass sheet is high-purity silica amorphous, and has the advantages of uniform structure, good light transmittance, transmittable spectrum bandwidth, small thermal expansion coefficient, good thermal shock resistance, stable chemical property, strong laser damage resistance and the like. The coefficient of thermal expansion of the quartz glass piece is: 5.5X10 -7 cm/cm/. Degree.C.is 1/34 of copper and 1/7 of borosilicate, which makes it useful for optical lenses, high temperature windows, and optical applications requiring minimal sensitivity to thermal changes. The quartz glass has good thermal shock resistance, and the quartz glass sheet with the thickness of 1 millimeter is heated to 1200 ℃ and is rapidly put into cold water for several times, so that the damage is avoided. The market for quartz glass sheet processing enterprises is mainly focused on the fields of photovoltaics, optical fibers and semiconductors.
Currently, the existing quartz glass polishing device is composed of a rotatable pipe support, a torch support and a torch, and as shown in fig. 1, the position of the torch is adjusted by manual operation due to the lack of an automatic device and the rotation of the pipe. Generally, the polishing operation can be completed by 2-3 persons, more persons are needed, the working efficiency is low, and in addition, the polishing process is accompanied by high temperature, so that the working environment of operators is poor.
Disclosure of Invention
According to an embodiment of the present disclosure, there is provided a polishing apparatus for quartz glass.
In a first aspect of the present disclosure, a polishing apparatus for quartz glass is provided. The device comprises:
the tray is horizontally arranged, so that the product to be polished is borne on the upper surface of the tray;
a rotation driving mechanism connected to the tray and driving the tray to rotate;
a gas delivery pipe provided above the tray, and having a distal end portion extending downward to be close to a product to be polished;
a torch which is arranged at the tail end of the fuel gas conveying pipeline;
and the lifting driving mechanism is connected with the gas conveying pipeline and used for driving the gas conveying pipeline to reciprocate.
In the aspect and any possible implementation manner described above, there is further provided an implementation manner, where the rotation driving mechanism is vertically disposed and connected to a lower end of the tray, and drives the tray to rotate around a vertical axis.
In the aspect and any possible implementation manner as described above, there is further provided an implementation manner, in which the gas delivery pipe has two downward extending diversion sections at the end portions, the torches are respectively provided at the ends of the two diversion sections,
the two blowlamps are horizontally arranged.
In aspects and any one of the possible implementations described above, there is further provided an implementation, the shunt segment including,
a first diverting section extending into the product chamber to be polished, and
a second flow dividing section extending outside the product to be polished;
the said torch may comprise a lamp body having a lamp hole,
a first blast lamp connected with the first diversion section and arranged in the cavity of the product to be polished for spraying flame on the inner wall surface of the product to be polished, and
and the second blast lamp is connected with the second shunt section and is arranged outside the product to be polished and used for spraying flame on the outer wall surface of the product to be polished.
In the aspect and any possible implementation manner described above, there is further provided an implementation manner, where the ejection ports of the first burner and the second burner are disposed opposite to each other.
In the aspect and any possible implementation manner described above, there is further provided an implementation manner, where the lifting driving mechanism is configured as a hydraulic driving mechanism, and the hydraulic driving mechanism includes a driver, a hydraulic cylinder, and a telescopic rod disposed along a vertical direction, and an upper end of the telescopic rod is fixedly connected with the gas delivery pipeline.
Aspects and any one of the possible implementations as set forth above, further provide an implementation, the tray including a three-jaw chuck.
In accordance with the above aspect and any one of the possible implementations, there is further provided an implementation in which the gas delivery pipe has a telescopic structure at least at a distal end portion.
When the polishing device for quartz glass is used, a product to be polished is placed on the tray, the tray is powered to rotate through the rotary driving mechanism, and the burner is controlled by the lifting driving mechanism to move up and down through the gas conveying pipeline. Therefore, the product to be polished can rotate around the shaft through the tray, the unpolished surface is enabled to rotate to the position of the blast lamp, and the product to be polished can be subjected to flame polishing by controlling the blast lamp to move up and down in a reciprocating manner in the vertical direction, so that the product to be polished can be rapidly and conveniently subjected to comprehensive polishing. And the polishing device can also be used for automatically polishing products by setting the rotating speed of the rotary driving mechanism and the moving speed of the lifting driving mechanism, thereby saving manpower and improving the processing efficiency.
On the other hand, in the utility model, a plurality of blast lamps can be arranged, and the blast lamp comprises a first blast lamp which is arranged in a cavity of a product to be polished in an extending way and sprays flames on the inner wall surface of the product to be polished, and a second blast lamp which is arranged outside the product to be polished and sprays flames on the outer wall surface of the product to be polished in an extending way, so that the polishing processing of the quartz glass tube is more convenient, the inner wall surface and the outer wall surface of the quartz glass tube can be polished at the same time, the complexity of the polishing operation of the product with the inner wall surface and the outer wall surface is reduced, the processing efficiency is greatly improved, the heat loss is reduced, and the energy consumption is reduced.
In still another aspect, the size of the tray can be changed according to the size of the product to be polished, so that the tray is suitable for processing products with different specifications; the lifting driving mechanism enables the height of the gas conveying pipeline to be adjustable, the gas conveying pipeline to be telescopically adjustable, the height of the gas conveying pipeline to be adjusted according to different length, pipe diameter, wall thickness and other size conditions of a product to be polished, and the gas conveying pipeline is high in adaptability and flexibility.
It should be understood that what is described in this summary is not intended to limit the critical or essential features of the embodiments of the disclosure nor is it intended to limit the scope of the disclosure. Other features of the present disclosure will become apparent from the following description.
Drawings
The above and other features, advantages and aspects of embodiments of the present disclosure will become more apparent by reference to the following detailed description when taken in conjunction with the accompanying drawings. In the drawings, wherein like or similar reference numerals denote like or similar elements, in which:
FIG. 1 is a schematic view showing the structure of a conventional quartz glass polishing apparatus;
fig. 2 is a schematic view showing a structure of a polishing apparatus for quartz glass according to an embodiment of the present utility model;
fig. 3 is a schematic view showing a partial structure of a polishing apparatus for quartz glass according to another embodiment of the present utility model.
The correspondence between the reference numerals and the component names in fig. 3 is:
10 trays;
20 a rotary drive mechanism;
30 gas delivery conduit, 31 first split section, 32 second split section;
40 torches, 41 first torches, 42 second torches;
50 lifting driving mechanism, 51 driver, 52 hydraulic cylinder, 53 telescopic rod;
60PLC switch board.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present disclosure more apparent, the technical solutions in the embodiments of the present disclosure will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present disclosure, and it is apparent that the described embodiments are some embodiments of the present disclosure, but not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art without inventive effort, based on the embodiments in this disclosure are intended to be within the scope of this disclosure.
In addition, the term "and/or" herein is merely an association relationship describing an association object, and means that three relationships may exist, for example, a and/or B may mean: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.
A polishing apparatus for quartz glass according to an embodiment of the present utility model will be described below with reference to fig. 2 to 3.
As shown in fig. 2, the polishing apparatus for quartz glass according to the embodiment of the present utility model includes a tray 10, a rotation driving mechanism 20, a gas delivery pipe 30, a torch 40, a lift driving mechanism 50, and a PLC control cabinet 60. The polishing device of the embodiment can be used for various products to be polished, which can be polished by flame, and the surfaces of the products to be polished are smooth and uniform under the heating action of oxyhydrogen flame, and particularly can be used for quartz glass products, especially quartz glass tubes. The polishing apparatus of the present embodiment will be described below taking polishing of a quartz glass tube by the polishing apparatus of the present embodiment as an example.
In this embodiment, the tray 10 is horizontally arranged, so that the product to be polished quartz glass tube is borne on the upper surface of the tray 10, the tray 10 is provided with a clamping and fixing structure, and the quartz glass tube can be clamped and fixed. The clamping jaw of the three-jaw chuck is a graphite clamping jaw, and the clamping jaw made of graphite can be used for protecting quartz glass from damage under clamping and fastening.
The quartz glass tube is vertically arranged under the fixation of the tray 10. A rotation driving mechanism 20 for driving the tray 10 to rotate is connected to the lower end of the tray 10. The rotary driving mechanism 20 comprises a driving motor, the driving motor is vertically arranged, a main shaft of the driving motor is vertical and is connected with the tray 10 in a matched mode, the driving motor drives the tray 10 to rotate around the vertical axial direction, and the tray 10 clamps the quartz glass tube to drive the quartz glass tube to rotate around the central vertical axial direction under the driving of the driving motor.
The gas delivery pipe 30 is supported and arranged above the tray 10 by a lifting driving mechanism 50, and is driven to move up and down by the lifting driving mechanism 50. The fuel gas delivery pipe 30 is filled with a combustible gas, preferably, oxyhydrogen gas, the fuel gas delivery pipe 30 is horizontally arranged, the tail end part extends to be close to a product to be polished, a blast lamp 40 is arranged at the tail end of the fuel gas delivery pipe 30, and the oxyhydrogen gas is sprayed from the blast lamp 40 and is ignited by an ignition device to form oxyhydrogen flame. Ignition according to the conventional method, an electronically controlled ignition device controlled by a PLC may be provided at the torch 40, or manual ignition may be performed from outside the torch 40 by an ignition device. At the other end of the gas delivery pipe 30 opposite to the torch 40, since the gas delivery pipe 30 is lifted by the lift driving mechanism 50, the gas inlet pipe connected to the gas delivery pipe 30 may be provided as a hose to accommodate the lifting movement of the gas delivery pipe 30 near the polishing work area, while other related devices far from the polishing work area are connected to the gas delivery pipe 30 and stably provided.
The gas delivery pipe 30 is formed at the end portion with a plurality of split sections extending downward in the vertical direction, and in this embodiment, the split sections are provided in two, including a first split section 31 extending in the cavity of the product quartz glass tube to be polished, and a second split section 32 extending outside the product quartz glass tube to be polished. The first and second branch sections 31, 32 are formed on the same side, that is, the torch 40 side, with a predetermined distance therebetween. The distance between the first and second branch sections 31 and 32 may be set according to the wall thickness of the quartz glass tube, the required flame intensity, and the extension lengths of the first and second branch sections 31 and 32 may be the same and may be set according to the length of the quartz glass tube.
The elevating driving mechanism 50 is disposed at the opposite side of the split sections, and drives the gas delivery pipe 30 provided with each split section to move up and down.
The burner 40 is provided at the end of the branching section, and the plurality of burner 40 are provided horizontally, and include a first burner 41 connected to the first branching section 31 and provided in the cavity of the quartz glass tube for spraying flame to the inner wall surface of the quartz glass tube, and a second burner 42 connected to the second branching section 32 and provided outside the quartz glass tube for spraying flame to the outer wall surface of the quartz glass tube, and the discharge ports of the first burner 41 and the second burner 42 are provided so as to face each other, thereby polishing the inner and outer wall surfaces of the quartz glass tube carried on the tray 10 at the same time.
In the present embodiment, oxyhydrogen gas is split into the first split section 31 and the second split section 32, and the oxyhydrogen gas is ejected from the first burner 41 and the second burner 42 to form oxyhydrogen flame to flame polish the inner wall surface and the outer wall surface of the quartz glass tube, respectively. Moreover, the quartz glass tube is driven by the clamping fixing of the tray 10 and the rotation driving mechanism 20 to drive the tray 10 to rotate around the vertical axis, so that polishing of the quartz glass tube in the circumferential direction is realized, and the lifting driving mechanism 50 drives the gas conveying pipeline 30 to reciprocate, so that the torch 4 is driven to reciprocate, and further polishing of the quartz glass tube in the axial direction is realized. Therefore, through this embodiment, polish quartz glass tubular product on one hand in the circumference, polish quartz glass tubular product on the other hand in the axial, realize treating polishing product comprehensively fast, conveniently, simple structure, the simple operation to through each actuating mechanism drive control, degree of automation is high, uses manpower sparingly. And compared with single-sided heating, the heat loss is low, and the energy consumption is low.
The lifting driving mechanism 50 is arranged as a hydraulic driving mechanism, and the hydraulic driving mechanism comprises a driver 51, a hydraulic cylinder 52 and a telescopic rod 53 which is arranged vertically, and the upper end of the telescopic rod 53 is fixedly connected with the fuel gas conveying pipeline 30. The upper end of the telescopic rod 53 is welded and fixed with a v-shaped angle iron, and the angle iron is provided with a hoop which is sleeved and connected with the gas conveying pipeline 30, so that the gas conveying pipeline 30 is connected and fixed with the telescopic rod 53.
In other embodiments, the gas delivery conduit 30 has a telescoping structure at least at the distal end. The fuel gas delivery pipe 30 between the first and second sections 31, 32 may be telescopic, and/or the first and second sections 31, 32 may be telescopic, and the telescopic structure may be configured in a conventional manner, which is not limited herein. For example, as shown in fig. 3, the telescopic part is set as a sleeve, the sleeves are matched by a sealing ring, and the sleeves can be lengthened or shortened by moving relative to each other; for another example, the telescopic part is provided as a sleeve, and the sleeves are connected by a bolt or a bolt at a specified position, or are tightly matched by threads, etc.
In other embodiments, one or more than two diverter segments and torches may be provided. For example, the gas delivery pipe 30 may extend at the distal end portion a third and a fourth branch sections correspondingly at the other side surface of the silica glass tube, the third branch section extending into the cavity of the silica glass tube and having the third burner provided at the third branch section directed toward the inner wall surface of the other side surface of the silica glass tube, and the fourth branch section extending outside the silica glass tube and having the fourth burner provided at the fourth branch section directed toward the outer wall surface of the other side surface of the silica glass tube. Alternatively, the distal end portion may extend in all directions of the horizontal plane and then extend downward in the vertical direction. Thereby increasing the number of torches around the circumference of the product to be polished, and shortening the polishing period of the individual polishing products.
The rotation driving mechanism 20 and the elevation driving mechanism 50 are installed and fixed to the frame such that the tray 10 carrying the quartz glass tube and the gas delivery pipe 30 are disposed above the frame.
The rotation driving mechanism 20 and the lifting driving mechanism 50 are controlled by a PLC control cabinet 60, the PLC control cabinet 60 sets the motor rotation speed and the movement speed of the telescopic rod 53, and the rotation driving mechanism 20 and the lifting driving mechanism 50 are controlled to act, so that the automatic polishing of products is realized. Thus, the present embodiment is designed to install a driving device for the rotation of the pipe and the movement of the torch 40. Automatic polishing is achieved through the PLC, machining can be achieved through one person, after equipment is started, an operator can observe machining conditions in a remote place, and labor is saved.
In the polishing device for quartz glass of the utility model, when in use, a product to be polished is placed on the tray 10, the tray 10 is powered to rotate by the rotary driving mechanism 20, and the burner 40 controls the gas conveying pipeline 30 to move up and down by the lifting driving mechanism 50. Therefore, the product to be polished can rotate around the shaft through the tray 10, the unpolished surface is enabled to rotate to the position of the blast lamp 40, and the product to be polished can be subjected to flame polishing by controlling the blast lamp 40 to lift and reciprocate in the vertical direction, so that the product to be polished is rapidly and conveniently subjected to comprehensive polishing, surface flaws of quartz glass tubes can be effectively reduced, and appearance quality of the quartz glass tubes is improved. And can also be used for setting the rotating speed of the rotary driving mechanism and the moving speed of the lifting driving mechanism through the PLC control cabinet 60, thereby realizing automatic polishing of products, saving manpower and improving the processing efficiency.
On the other hand, in the present utility model, the plurality of torches 40 may be provided, including the first torch 41 extending inside the product chamber to be polished to spray the flame on the inner wall surface of the product to be polished, and the second torch 42 extending outside the product to be polished to spray the flame on the outer wall surface of the product to be polished, so that the polishing process of the quartz glass tube is more convenient, the inner and outer wall surfaces of the quartz glass tube can be polished at the same time, the complexity of the polishing operation of the product having the inner and outer wall surfaces is reduced, the processing efficiency is greatly improved, the heat loss is reduced, and the energy consumption is reduced.
In yet another aspect, the size of the tray 10 can be changed or the spacing between the clamping jaws can be adjusted according to the size of the product to be polished, so as to adapt to the processing of products with different specifications; the lifting driving mechanism 50 enables the height of the gas conveying pipeline 30 to be adjustable, the gas conveying pipeline 30 to be telescopically adjustable, the height of the gas conveying pipeline 30 to be adjusted according to different length, pipe diameter, wall thickness and other size conditions of a product to be polished, and the gas conveying pipeline is high in adaptability and flexibility.
Simple structure, it is automatic high, only need alone can operate after the debugging, can save a large amount of manpowers. Meanwhile, the machining efficiency is greatly improved after modification. The operator can observe in a far position, and the working environment is greatly improved.
In the description of the present specification, the terms "connected," "mounted," "secured," and the like are to be construed broadly, and for example, "connected" may be a fixed connection, a removable connection, or an integral connection; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be.
In the description of the present specification, the terms "one embodiment," "some embodiments," and the like, describe means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms do not necessarily refer to the same implementations or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The foregoing is merely a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and variations may be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.
Claims (7)
1. A polishing apparatus for quartz glass, comprising:
the tray is horizontally arranged, so that the product to be polished is borne on the upper surface of the tray;
a rotation driving mechanism connected to the tray and driving the tray to rotate;
a gas delivery pipe provided above the tray, and having a distal end portion extending downward to be close to a product to be polished;
a torch which is arranged at the tail end of the fuel gas conveying pipeline;
the lifting driving mechanism is connected with the fuel gas conveying pipeline and used for driving the fuel gas conveying pipeline to reciprocate and lift, wherein,
the tail end of the fuel gas conveying pipeline is provided with two downward extending diversion sections, the tail ends of the two diversion sections are respectively provided with the blast burner,
the two blowlamps are horizontally arranged.
2. The polishing apparatus for quartz glass according to claim 1, wherein,
the rotary driving mechanism is vertically arranged and connected with the lower end of the tray, and drives the tray to rotate around the vertical axis.
3. The polishing apparatus for quartz glass according to claim 1, wherein,
the said branching section comprises a plurality of sections,
a first diverting section extending into the product chamber to be polished, and
a second flow dividing section extending outside the product to be polished;
the said torch may comprise a lamp body having a lamp hole,
a first blast lamp connected with the first diversion section and arranged in the cavity of the product to be polished for spraying flame on the inner wall surface of the product to be polished, and
and the second blast lamp is connected with the second shunt section and is arranged outside the product to be polished and used for spraying flame on the outer wall surface of the product to be polished.
4. A polishing apparatus for silica glass according to claim 3, wherein,
the first burner and the second burner are arranged in a manner that the discharge ports are opposite to each other.
5. The polishing apparatus for quartz glass according to claim 4, wherein,
the lifting driving mechanism is arranged to be a hydraulic driving mechanism, the hydraulic driving mechanism comprises a driver, a hydraulic cylinder and a telescopic rod which is arranged vertically, and the upper end of the telescopic rod is fixedly connected with the gas conveying pipeline.
6. The polishing apparatus for quartz glass according to claim 1, wherein,
the tray includes a three jaw chuck.
7. The polishing apparatus for quartz glass according to claim 1, wherein,
the gas delivery conduit has a telescoping structure at least at the distal end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321699135.2U CN220432625U (en) | 2023-06-29 | 2023-06-29 | Polishing device for quartz glass |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321699135.2U CN220432625U (en) | 2023-06-29 | 2023-06-29 | Polishing device for quartz glass |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220432625U true CN220432625U (en) | 2024-02-02 |
Family
ID=89697871
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321699135.2U Active CN220432625U (en) | 2023-06-29 | 2023-06-29 | Polishing device for quartz glass |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220432625U (en) |
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2023
- 2023-06-29 CN CN202321699135.2U patent/CN220432625U/en active Active
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