CN114559197A - Quartz plate welding clamp and using method thereof - Google Patents
Quartz plate welding clamp and using method thereof Download PDFInfo
- Publication number
- CN114559197A CN114559197A CN202111601967.1A CN202111601967A CN114559197A CN 114559197 A CN114559197 A CN 114559197A CN 202111601967 A CN202111601967 A CN 202111601967A CN 114559197 A CN114559197 A CN 114559197A
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- wedge
- groove
- quartz plate
- quartz
- block
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- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 title claims abstract description 98
- 239000010453 quartz Substances 0.000 title claims abstract description 96
- 238000003466 welding Methods 0.000 title claims abstract description 53
- 238000000034 method Methods 0.000 title claims abstract description 10
- 239000007769 metal material Substances 0.000 claims abstract description 8
- 238000009434 installation Methods 0.000 claims description 12
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 4
- 229910002804 graphite Inorganic materials 0.000 claims description 4
- 239000010439 graphite Substances 0.000 claims description 4
- 238000009826 distribution Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 abstract description 6
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 229910052755 nonmetal Inorganic materials 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 4
- 230000006978 adaptation Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 210000002421 cell wall Anatomy 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 230000001174 ascending effect Effects 0.000 description 1
- 239000007770 graphite material Substances 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
- B23K37/04—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
- B23K37/0426—Fixtures for other work
- B23K37/0435—Clamps
- B23K37/0443—Jigs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/50—Inorganic material, e.g. metals, not provided for in B23K2103/02 – B23K2103/26
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Container, Conveyance, Adherence, Positioning, Of Wafer (AREA)
- Glass Melting And Manufacturing (AREA)
Abstract
The invention discloses a quartz plate welding fixture and a using method thereof, wherein the fixture comprises a base made of non-metal materials, a fixing block and a plug block, the base is provided with a mounting groove, the fixing block is arranged in the mounting groove in a clearance fit manner, the fixing block is provided with a wedge-shaped groove, the plug block is matched with the inclined surface of the wedge-shaped groove, and a space for fixing a quartz plate is arranged between the plug block and the wedge-shaped groove. The invention has the following beneficial effects: (1) the structure is simple, the quartz glass can be processed and manufactured by high-temperature-resistant non-metallic materials at high precision, and the pollution to quartz materials is avoided; (2) the device has strong universality, and is suitable for products with different sizes and shapes and welding angles; (3) the clamping is accurate and efficient; (4) simple structure, the frock processing cost is low.
Description
Technical Field
The invention relates to the technical field of quartz, in particular to a quartz plate welding clamp and a using method thereof.
Background
With the development of the semiconductor industry, the size of a quartz product is gradually increased, the precision requirement of a welded part is high, and the requirement on the material purity of the quartz product is extremely high. At present, the production of quartz products is carried out by adopting quartz materials with ultrahigh purity. The traditional common metal clamp is not high-temperature resistant and easy to rust, can cause irreparable pollution to quartz products in the welding process, cannot meet the production requirements of the quartz products, and is not suitable for welding processing of the quartz products. On one hand, the clamp jig made of nonmetal is not high-temperature resistant, cannot adapt to the high-temperature environment during welding of quartz products, is low in precision, and cannot meet the high-precision welding requirement of the quartz products; and high temperature resistant non-metallic materials such as graphite are brittle, difficult to process the complex structure that ordinary metal anchor clamps can reach, also difficult to guarantee the precision.
For example, a "pipe welding jig" disclosed in chinese patent literature, whose application number CN201521012851.4, includes a base, the base includes a square pipe base and a circular pipe base of an integral structure, a welding groove is provided between the square pipe base and the circular pipe base, the square pipe base is of an L-shaped structure, a quartz square pipe of a quartz injection pipe is placed on a horizontal plane of the square pipe base and is attached to a vertical side of the square pipe base, a V-shaped positioning groove is provided on the circular pipe base, and the V-shaped positioning groove is engaged with the quartz circular pipe in the quartz injection pipe and accommodates the quartz circular pipe. The fixture has the disadvantages that the upper pressure plate, the side pressure plate and the bolt of the fixture are all made of stainless steel, the melting point of the stainless steel is close to or lower than the high temperature which can be reached during quartz welding, irreparable pollution to quartz products is easily caused, and the production requirement of quartz products cannot be met.
Disclosure of Invention
The invention provides a quartz plate welding clamp and a using method thereof, aiming at overcoming the problem that the existing welding clamp cannot meet the high-precision welding requirement of quartz products, and realizing high-precision clamping of quartz plates during welding.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides a quartz plate welding jig, includes base, fixed block and the chock that non-metallic material made, be equipped with the mounting groove on the base, fixed block clearance fit sets up in the mounting groove, be equipped with the wedge groove on the fixed block, chock and wedge groove inclined plane cooperation, be equipped with the space that is used for fixed quartz plate between chock and the wedge groove.
The widths of the wedge-shaped grooves are adjusted by matching the inclined surfaces of the fixed block and the plugs, so that the quartz plates with different widths are clamped, a plurality of groups of the fixed block and the plugs can be distributed along the extension direction of the quartz plates according to the lengths of the quartz plates, two plugs can be arranged in the wedge-shaped groove of the same fixed block at the same time and are respectively used for fixing two adjacent quartz plates to be welded, and the two quartz plates can be aligned; the fixing block is inserted in the mounting groove, and the position of the fixing block in the mounting groove can be adjusted according to the length of the quartz plate so as to adjust the fixing point of the quartz plate. Further, the fixed block can be set to the square, and the wedge groove sets up in the square wherein one side, and any one side of square can both with the mounting groove adaptation, and the mounting groove size realizes unifying, saves the cost. The base can be replaced according to the shape of the quartz plate to be welded, for example, two quartz plates with a certain included angle are welded, and a base provided with two mounting grooves with the same included angle is selected, wherein the mounting grooves are parallel to the quartz plates; when the quartz plate is arc-shaped or annular, the mounting groove extends along the annular radial direction, and the position of the fixed block is moved to adjust the size of the matched annular quartz plate. Because the base, the fixed block and the chock block are simple in structure and can be made of high-temperature-resistant non-metallic materials in a high-precision processing mode, pollution to quartz materials is avoided.
Preferably, one end of the chock, which is far away from the wedge-shaped groove, is provided with an assembling protrusion.
The assembling bulge is convenient for plugging in assembling, the pressure area is increased, and the assembling tightness is improved; after the welding is finished, the assembling protrusion on the chock block is pulled out, so that the assembling relation between the fixing block and the chock block is removed, and the efficiency is improved.
Preferably, an included angle between two side groove walls of the wedge-shaped groove is 5-15 degrees.
When the chock block is pushed inwards, the quartz plate is slowly clamped, preferably, one side wall of the wedge-shaped groove is parallel or vertical to the bottom surface of the mounting groove, and the quartz plate is attached to the side wall to ensure the horizontal or vertical state of the quartz plate.
Preferably, the width of the wedge-shaped groove is larger than 15 mm.
The welding device is suitable for welding the quartz plate with the thickness of 1-10 mm, and can be applied to welding quartz plates with thickness larger than the plate thickness by only enlarging the groove width if thicker plate welding requirements exist, and is convenient and fast.
Preferably, the base, the fixed block and the plug block are all made of graphite materials.
The graphite is high temperature resistant and is not easy to scratch quartz products.
Preferably, the mounting grooves are provided with a plurality of mounting grooves, and the end parts of the mounting grooves are rotatably connected.
Be applicable to the quartz plate angled weld of two sharp, through rotating the mounting groove on the base, the welding of the different contained angles of adaptation.
Preferably, the mounting grooves are radially distributed along the radial direction of the same circle center.
The annular welding fixture is suitable for annular welding of a plurality of arc-shaped quartz plates, a fixing block is arranged in each mounting groove, the wedge-shaped grooves of the fixing blocks face to or deviate from the circle center, preferably, the wedge-shaped grooves of adjacent fixing blocks are arranged in opposite directions, and the radial positions of the fixing blocks are adjusted to adapt to quartz rings with different sizes.
Preferably, the wall of the installation groove is rotatably connected with an eccentric roller, the far end of the eccentric roller protrudes out of the wall of the installation groove, and the eccentric roller extends along the length direction of the installation groove.
When the near end of the eccentric roller faces the inner side of the mounting groove, the fixing block is in clearance fit with the mounting groove, and the position of the fixing block can be moved; after the position of the fixed block is determined, the far end of the eccentric roller gradually compresses the fixed block to fix the fixed block by rotating the eccentric roller; because the eccentric roller extends along the length direction of the mounting groove, on one hand, a plurality of fixing blocks can be fixed simultaneously, and on the other hand, the fixing blocks can be fixed no matter where the fixing blocks move.
A using method of a quartz plate welding clamp comprises the following steps:
s1, firstly, placing a base on an operation platform for fixing, and assembling a plurality of fixing blocks into an installation groove as required;
s2, placing a quartz plate into the wedge-shaped groove, wherein one side of the quartz plate is attached to the groove wall on one side of the wedge-shaped groove;
s3, adjusting the position of the quartz plate on the wedge-shaped groove, adjusting the distribution position of the fixed block on the base, aligning the welding positions of two adjacent quartz plates to be welded, placing the plug block into a gap between the quartz plate and the wedge-shaped groove after adjustment is finished, matching the plug block and the wedge-shaped groove through an inclined plane, and applying force on the plug block to ensure that the plug block and the wedge-shaped groove are assembled and matched, so that the quartz plate is not loosened;
and S4, after welding is finished, applying force to the assembling protrusion, and removing the chock block.
Preferably, after the position of the fixing block is adjusted, the eccentric roller is rotated to fix the fixing block in the wedge-shaped groove.
The clamping is accurate and efficient.
Therefore, the invention has the following beneficial effects: (1) the structure is simple, the quartz glass can be processed and manufactured by high-temperature-resistant non-metallic materials at high precision, and the pollution to quartz materials is avoided; (2) the device has strong universality, and is suitable for products with different sizes and shapes and welding angles; (3) the clamping is accurate and efficient; (4) simple structure, frock processing cost is low.
Drawings
Fig. 1 is a schematic structural diagram of embodiment 1 of the present invention.
Fig. 2 is a schematic structural diagram of embodiment 2 of the present invention.
Fig. 3 is a schematic structural diagram of embodiment 3 of the present invention.
Fig. 4 is a schematic structural diagram of embodiment 4 of the present invention.
FIG. 5 is a schematic view of a structure of the present invention when the mounting groove is unlocked.
FIG. 6 is a schematic view of the locking structure of the mounting groove of the present invention.
FIG. 7 is a view of the mounting groove of the present invention
In the figure: 1. the device comprises a base 11, a mounting groove 12, an eccentric roller 13, a rotating shaft 14, a poking plate 2, a positioning block 21, a wedge-shaped groove 3, a plug block 31, an assembling protrusion 4, a quartz plate 41 and an arc-shaped quartz plate.
Detailed Description
The invention is further described with reference to the following detailed description and accompanying drawings.
Example 1
As shown in fig. 1, a quartz plate welding jig, include the base 1 of making by graphite, fixed block 2 and chock 3, be equipped with the mounting groove 11 that is the straight line setting on the base 1, fixed block 2 is the cuboid, 2 bottom surfaces of fixed block set up in mounting groove 11 and rather than clearance fit, be equipped with the ascending wedge groove 21 of opening on the fixed block 2, wedge groove 21 width is greater than 15mm, wedge groove 21 extending direction is unanimous with 11 extending direction of mounting groove, the vertical setting of 21 one side cell walls of wedge groove, the opposite side cell wall is 10 contained angles with vertical direction. 3 both sides of chock are parallel with 21 both sides walls of wedge groove respectively, and 3 one sides of chock and 21 inclined plane cooperations of wedge groove are equipped with the space that is used for fixed quartz plate between 3 opposite sides of chock and the wedge groove 21, and the one end that 3 chocks keep away from wedge groove 21 is equipped with assembly arch 31.
A using method of a quartz plate welding clamp comprises the following steps:
s1, firstly, a base 1 is placed on an operation platform to be fixed, an installation groove 11 is formed in the base 1, and a plurality of fixed blocks 2 are assembled in the installation groove 11 as required;
s2, placing the two quartz plates 4 into the wedge-shaped groove 21, wherein one side of each quartz plate is attached to the groove wall on one side of the wedge-shaped groove 21;
s3, adjusting the position of the quartz plate on the wedge-shaped groove 21, adjusting the distribution position of the fixed block 2 on the base 1, aligning the welding positions of the two quartz plates, arranging the welding positions in the wedge-shaped groove 21, placing the plug blocks 3 into the gap between the quartz plate and the wedge-shaped groove 21 after the adjustment is finished, plugging the two plug blocks 3 into the wedge-shaped groove 21 corresponding to the welding positions, matching the plug blocks 3 with the wedge-shaped groove 21 through inclined planes, and applying force on the assembling protrusions 31 of the plug blocks 3 to ensure that the plug blocks 3 are assembled and matched with the wedge-shaped groove 21, so that the quartz plates are not loosened;
s4, after welding is completed, force is applied to the assembling protrusion 31, and the chock block 3 is removed.
This embodiment is applicable to that two quartz plates are sharp welding, because the simple structure of base, fixed block and chock, can be made by high-accuracy processing of high temperature resistant non-metallic material, avoids the pollution to quartz materials.
Example 2
As shown in fig. 2, a quartz plate welding jig is different from embodiment 1 in that two mounting grooves 11 are provided and form an included angle of 90 °, a fixing block 2 rotates by 90 °, and a wedge groove 21 is opened to one side.
This embodiment is suitable for welding two perpendicular quartz plates 4.
Example 3
As shown in fig. 3, a quartz plate welding jig is different from embodiment 1 in that a fixing block is a cube, two mounting grooves 11 are provided, and end portions are rotatably connected.
The mounting groove 11 is rotated, and after the angle is adjusted, the mounting groove 11 is fixed. This embodiment is applicable to the welding that two quartz plates 4 are certain contained angle, and the arbitrary one side of fixed block all with the mounting groove adaptation, only needs to set up the mounting groove of a specification.
Example 4
As shown in fig. 4, a quartz plate welding jig is different from embodiment 1 in that 8 mounting grooves 11 are provided, the mounting grooves 11 are radially distributed along the radial direction of the same center of circle, and the included angle between adjacent mounting grooves 11 is 45 °. Each mounting groove 11 is provided with a fixing block 2, the wedge-shaped grooves of the fixing blocks face to or depart from the circle center alternately, as shown in fig. 7, the groove wall on one side of the mounting groove 11 is rotatably connected with an eccentric roller 12 through a rotating shaft 13, the eccentric roller 12 extends along the length direction of the mounting groove 11, and the eccentric roller 12 is provided with a poking plate 14 extending outwards.
The toggle plate 14 is rotated to make the proximal end of the eccentric roller 12 face the inside of the mounting groove 11, as shown in fig. 5, the radial position of the fixing block is adjusted to fit quartz rings of different sizes, after a plurality of arc-shaped quartz plates 41 are placed in the wedge-shaped groove 21 and fixed by the chock 3, the toggle plate 14 is rotated to make the distal end of the eccentric roller 12 face the inside of the mounting groove 11, as shown in fig. 6, the fixing block is fixed.
Claims (10)
1. The utility model provides a quartz plate welding jig, characterized by, base (1), fixed block (2) and chock (3) including non-metallic material makes, be equipped with mounting groove (11) on base (1), fixed block (2) clearance fit sets up in mounting groove (11), be equipped with wedge groove (21) on fixed block (2), chock (3) and wedge groove (21) inclined plane cooperation, be equipped with the space that is used for fixed quartz plate between chock (3) and wedge groove (21).
2. The quartz plate welding jig according to claim 1, wherein an end of the plug (3) away from the wedge groove (21) is provided with an assembling projection (31).
3. The quartz plate welding jig as set forth in claim 1, wherein an angle between groove walls of both sides of the wedge-shaped groove (21) is 5 to 15 °.
4. The quartz plate welding jig according to claim 1, wherein the width of the wedge groove (21) is larger than 15 mm.
5. The quartz plate welding jig according to claim 1, wherein the base (1), the fixed block (2) and the chock block (3) are made of graphite.
6. The welding jig for quartz plates as set forth in claim 1, wherein a plurality of the installation grooves (11) are provided, and ends of the installation grooves (11) are rotatably connected.
7. The quartz plate welding jig as set forth in claim 1, wherein a plurality of the mounting grooves (11) are provided, and the mounting grooves (11) are radially distributed along a radial direction of a same center.
8. The quartz plate welding jig as set forth in claim 1, wherein an eccentric roller (12) is rotatably connected to a wall of the installation groove (11), a distal end of the eccentric roller (12) protrudes from the wall of the installation groove (11), and the eccentric roller (12) extends along a length of the installation groove (11).
9. Use of the quartz plate welding jig according to any one of claims 1 to 8, characterized by comprising the steps of:
s1, firstly, a base (1) is placed on an operation platform to be fixed, and a plurality of fixed blocks (2) are assembled in an installation groove (11) as required;
s2, placing the quartz plate into the wedge-shaped groove (21), wherein one side of the quartz plate is attached to the groove wall on one side of the wedge-shaped groove (21);
s3, adjusting the position of the quartz plate on the wedge-shaped groove (21), adjusting the distribution position of the fixed block (2) on the base (1), aligning the welding positions of two adjacent quartz plates to be welded, placing the plug block (3) into a gap between the quartz plate and the wedge-shaped groove (21) after adjustment is finished, matching the plug block (3) and the wedge-shaped groove (21) through an inclined plane, and applying force on the plug block (3) to ensure that the plug block (3) and the wedge-shaped groove (21) are assembled and matched, so that the quartz plate is not loosened;
s4, after welding is completed, force is applied to the assembling protrusion (31), and the plug block (3) is removed.
10. A method for using the quartz plate welding jig according to claim 9, wherein after the position adjustment of the fixing block (2) is completed, the fixing block (2) is fixed in the wedge-shaped groove (21) by rotating the eccentric roller (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111601967.1A CN114559197A (en) | 2021-12-24 | 2021-12-24 | Quartz plate welding clamp and using method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111601967.1A CN114559197A (en) | 2021-12-24 | 2021-12-24 | Quartz plate welding clamp and using method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN114559197A true CN114559197A (en) | 2022-05-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111601967.1A Pending CN114559197A (en) | 2021-12-24 | 2021-12-24 | Quartz plate welding clamp and using method thereof |
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| CN (1) | CN114559197A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004017108A (en) * | 2002-06-18 | 2004-01-22 | Suzuki Motor Corp | Clamping tool for sheet welding |
| CN201848709U (en) * | 2010-09-10 | 2011-06-01 | 合肥东方冶金设备有限公司 | Clamp used for clamping quadrangular prism workpiece |
| CN204300052U (en) * | 2014-10-31 | 2015-04-29 | 广西电网公司崇左供电局 | A kind of instrument fast fixing structure |
| CN204354325U (en) * | 2014-12-09 | 2015-05-27 | 杭州大和热磁电子有限公司 | A kind of tubule welding tool |
| CN209647959U (en) * | 2018-12-28 | 2019-11-19 | 中国石油大学(华东) | A kind of sheet metal fixing device used for welding |
| CN211638843U (en) * | 2020-03-04 | 2020-10-09 | 上海珞呈汽车电子有限公司 | Filtering plate welding tool clamp |
| CN212761850U (en) * | 2020-07-06 | 2021-03-23 | 浙江飞华科技有限公司 | Automatic welding device for steel tower production |
| CN213765404U (en) * | 2020-09-04 | 2021-07-23 | 浙江先导精密机械有限公司 | Quartz product grinding and clamping device |
-
2021
- 2021-12-24 CN CN202111601967.1A patent/CN114559197A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004017108A (en) * | 2002-06-18 | 2004-01-22 | Suzuki Motor Corp | Clamping tool for sheet welding |
| CN201848709U (en) * | 2010-09-10 | 2011-06-01 | 合肥东方冶金设备有限公司 | Clamp used for clamping quadrangular prism workpiece |
| CN204300052U (en) * | 2014-10-31 | 2015-04-29 | 广西电网公司崇左供电局 | A kind of instrument fast fixing structure |
| CN204354325U (en) * | 2014-12-09 | 2015-05-27 | 杭州大和热磁电子有限公司 | A kind of tubule welding tool |
| CN209647959U (en) * | 2018-12-28 | 2019-11-19 | 中国石油大学(华东) | A kind of sheet metal fixing device used for welding |
| CN211638843U (en) * | 2020-03-04 | 2020-10-09 | 上海珞呈汽车电子有限公司 | Filtering plate welding tool clamp |
| CN212761850U (en) * | 2020-07-06 | 2021-03-23 | 浙江飞华科技有限公司 | Automatic welding device for steel tower production |
| CN213765404U (en) * | 2020-09-04 | 2021-07-23 | 浙江先导精密机械有限公司 | Quartz product grinding and clamping device |
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