CN111299721A - Tapping liquid spraying device and tapping equipment - Google Patents
Tapping liquid spraying device and tapping equipment Download PDFInfo
- Publication number
- CN111299721A CN111299721A CN202010259981.7A CN202010259981A CN111299721A CN 111299721 A CN111299721 A CN 111299721A CN 202010259981 A CN202010259981 A CN 202010259981A CN 111299721 A CN111299721 A CN 111299721A
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- CN
- China
- Prior art keywords
- tapping
- liquid
- crank
- liquid spraying
- roller
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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- 239000007788 liquid Substances 0.000 title claims abstract description 122
- 238000010079 rubber tapping Methods 0.000 title claims abstract description 77
- 238000005507 spraying Methods 0.000 title claims abstract description 64
- 230000007246 mechanism Effects 0.000 claims abstract description 19
- 239000007921 spray Substances 0.000 claims description 11
- 238000005553 drilling Methods 0.000 claims description 7
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 6
- 239000000741 silica gel Substances 0.000 claims description 6
- 229910002027 silica gel Inorganic materials 0.000 claims description 6
- 239000000110 cooling liquid Substances 0.000 abstract description 8
- 239000000314 lubricant Substances 0.000 abstract description 7
- 230000001050 lubricating effect Effects 0.000 abstract description 6
- 238000000034 method Methods 0.000 abstract description 6
- 238000001816 cooling Methods 0.000 abstract description 5
- 239000002184 metal Substances 0.000 abstract description 5
- 229910052751 metal Inorganic materials 0.000 abstract description 5
- 230000008569 process Effects 0.000 abstract description 5
- 239000012530 fluid Substances 0.000 abstract 4
- 230000006872 improvement Effects 0.000 description 8
- 239000005068 cooling lubricant Substances 0.000 description 6
- 230000009471 action Effects 0.000 description 5
- 239000002826 coolant Substances 0.000 description 4
- 238000005461 lubrication Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23G—THREAD CUTTING; WORKING OF SCREWS, BOLT HEADS, OR NUTS, IN CONJUNCTION THEREWITH
- B23G1/00—Thread cutting; Automatic machines specially designed therefor
- B23G1/44—Equipment or accessories specially designed for machines or devices for thread cutting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
- B23Q11/10—Arrangements for cooling or lubricating tools or work
- B23Q11/1076—Arrangements for cooling or lubricating tools or work with a cutting liquid nozzle specially adaptable to different kinds of machining operations
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Nozzles (AREA)
Abstract
The invention provides a tapping liquid-spraying device and tapping equipment, wherein the tapping liquid-spraying device comprises: a projection and a liquid spraying mechanism; the lug sets up on tapping equipment's lifing arm, and liquid spraying mechanism is located one side of lifing arm, and it includes: crank, gyro wheel and fluid reservoir, crank pivotally connected in one side of fluid reservoir, gyro wheel pivotally connected in articulate one end, the lug touches the gyro wheel along with the lift of lifing arm to drive the crank and carry out the pivotal motion, the fluid reservoir can be extruded along with the pivot of self to the articulate other end, and the fluid reservoir bottom is connected with the hydrojet output tube, and the one end of hydrojet output tube extends to and connects in the screw tap department of lifing arm. According to the tapping liquid spraying device, the cooling liquid or the lubricant is automatically sprayed to the screw tap before and after tapping, so that not only is the metal chips remained on the surface of the screw tap in the tapping process favorably cleaned, but also the cooling and lubricating effects are achieved, and the tapping quality of workpieces or products is favorably ensured.
Description
Technical Field
The invention relates to the technical field of tapping, in particular to a tapping liquid spraying device and tapping equipment.
Background
In industrial production, a workpiece or a product needs to be subjected to tapping processing so as to form a thread structure suitable for screwing on the workpiece or the product. Among the prior art, mainly realize the tapping processing through tapping equipment, this tapping equipment includes: drilling machines, lifting arms, taps, etc. However, the presence of debris can affect the quality of the subsequent work piece or product being tapped due to the debris generated during the tapping process. Therefore, it is necessary to provide a further solution to the above problems.
Disclosure of Invention
The invention aims to provide a tapping liquid spraying device and tapping equipment to overcome the defects in the prior art.
In order to solve the technical problems, the technical scheme of the invention is as follows:
a tapping liquid spray device, comprising: a projection and a liquid spraying mechanism;
the lug sets up on tapping equipment's lifing arm, hydrojet mechanism is located one side of lifing arm, it includes: the liquid spraying device comprises a crank, a roller and a liquid tank, wherein the crank is pivotally connected to one side of the liquid tank, the roller is pivotally connected to one end of the crank, a bump is touched by the roller along with the lifting arm, the crank is driven to perform pivoting motion, the other end of the crank can extrude the liquid tank along with the self pivoting motion, a liquid spraying output pipe is connected to the bottom of the liquid tank, and one end of the liquid spraying output pipe extends to a screw tap position connected to the lifting arm.
As an improvement of the tapping and liquid spraying device, the lug is provided with a first slope surface and a second slope surface which are contacted with the roller and drive the other end of the crank to extrude the liquid tank.
As an improvement of the tapping and liquid spraying device, the first slope surface and the second slope surface are intersected or tangent with each other.
As an improvement of the tapping and liquid spraying device, the first slope surface and the second slope surface are arc surfaces or planes.
As an improvement of the tapping and liquid spraying device of the present invention, the crank can press the crank arm of the liquid tank by a length less than that of the crank arm pivotally connected to the roller.
As an improvement of the tapping liquid spraying device, the crank is in pivot connection with the mounting frame, and a torsion spring is sleeved on a pivot shaft between the crank and the mounting frame.
As an improvement of the tapping and liquid spraying device, the top of the liquid tank is also connected with a liquid spraying input pipe.
As an improvement of the tapping liquid spraying device, the liquid tank is made of silica gel.
In order to solve the technical problems, the technical scheme of the invention is as follows:
a tapping apparatus, comprising: the device comprises a drilling machine, a lifting arm, a screw tap and a tapping liquid spraying device;
lifting arm one end install in on the drilling machine, the screw tap connect in lifting arm's the other end, tapping hydrojet device includes: a projection and a liquid spraying mechanism;
the lug set up in on the lifing arm, hydrojet mechanism is located one side of lifing arm, it includes: the liquid spraying device comprises a crank, a roller and a liquid tank, wherein the crank is pivotally connected to one side of the liquid tank, the roller is pivotally connected to one end of the crank, a bump is touched by the roller along with the lifting arm, the crank is driven to perform pivoting motion, the other end of the crank can extrude the liquid tank along with the self pivoting motion, a liquid spraying output pipe is connected to the bottom of the liquid tank, and one end of the liquid spraying output pipe extends to a screw tap position connected to the lifting arm.
As an improvement of the tapping apparatus of the present invention, the tap is connected to the other end of the lifting arm by a tap sleeve or a spring clip.
Compared with the prior art, the invention has the beneficial effects that: according to the tapping liquid spraying device, the cooling liquid or the lubricant is automatically sprayed to the screw tap before and after tapping, so that not only is the metal chips remained on the surface of the screw tap in the tapping process favorably cleaned, but also the cooling and lubricating effects are achieved, and the tapping quality of workpieces or products is favorably ensured.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a front view of an embodiment of the liquid jet tapping apparatus of the present invention in combination with a tapping device;
FIG. 2 is an enlarged plan view of the liquid ejection mechanism of FIG. 1;
fig. 3 to 6 are schematic views illustrating the states of the liquid spraying apparatus for tapping according to the present invention in operation.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
When a common product is used for tapping, cooling liquid or lubricant needs to be added, which is a great premise for ensuring the quality of the screw thread of the product and prolonging the service life of the screw tap. The invention relates to a device for tapping and filling cooling liquid or lubricant on a plate piece, which has the advantage that the cooling liquid or the lubricant can be automatically sprayed into a screw tap before and after the screw tap works. The former plays cooling and lubrication action to the screw tap during operation, and the latter is the remaining iron fillings of clearance screw tap, guarantees the tapping quality of product promptly to can prolong the life of screw tap, alleviateed operative employee's intensity of labour in addition.
As shown in fig. 1 and 2, an embodiment of the present invention provides a tapping liquid spraying apparatus 10, where the tapping liquid spraying apparatus 10 includes: a bump 1 and a liquid ejecting mechanism 2.
The projection 1 is used as a member for triggering the operation of the liquid ejecting mechanism 2.
Specifically, the projection 1 is disposed on the lifting arm of the tapping apparatus so that it can move synchronously with the lifting of the lifting arm, so as to interact with the liquid spraying mechanism 2 during the movement to trigger the movement thereof. The specific triggering method between the two is specifically described later.
The liquid spraying mechanism 2 is used for performing action and spraying cooling liquid or lubricant under the triggering of the lug 1.
Specifically, the liquid ejecting mechanism 2 is located on one side of the lift arm, and includes: a crank 21, a roller 22, and a liquid tank 23. Wherein, the crank 21 is pivotally connected to one side of the liquid tank 23 by the crank pin, the roller 22 is pivotally connected to one end of the crank 21 by the roller pin, one end of the crank 21 extends to the movement stroke of the lug 1, and the liquid tank 23 is located on the movement stroke of the other end of the crank 21.
The liquid tank 23 is used for storing cooling liquid or lubricant, and a liquid spraying output pipe 231 is connected to the bottom of the liquid tank 23 for realizing extrusion liquid spraying. Meanwhile, a spray inlet pipe 232 is also connected to the top of the liquid tank 23, and the spray inlet pipe 232 may be connected to a coolant source or a lubricant source. In one embodiment, the liquid tank 23 is made of silica gel.
Thus, when the cam 1 moves synchronously with the lifting arm, the cam 1 can collide with the roller 22 and drive the crank 21 to perform pivoting motion. Accordingly, as the crank 21 pivots, the other end of the crank 21 can press the liquid tank 23, so that the coolant or lubricant in the liquid tank 23 is ejected from the ejection liquid outlet pipe 231. Accordingly, one end of the spray delivery tube 231 extends to the tap attached to the lift arm so that the sprayed coolant or lubricant is applied to the surface of the tap for the purpose of removing metal chips from the surface of the tap and assisting in cooling and lubricating the tap.
The crank 21 can press the crank arm of the liquid tank 23 to a length less than that of the crank arm pivotally connected with the roller 22, so as to satisfy the characteristic that the crank 21 acts when the liquid is pressed. In this way, the crank 21 is able to press the crank arm of the liquid tank 23 with a relatively small pivoting stroke, to avoid over-pressing the liquid tank 23; the crank arm of the pivotal connection roller 22 has a relatively large pivotal stroke to cooperate with the lifting arm to carry the lifting movement of the cam 1.
Because the liquid spraying mechanism 2 is required to spray liquid before and after tapping, the lug 1 is provided with a first slope surface 11 which is in contact with the roller 22 and drives the other end of the crank 21 to press the liquid tank 23 and a second slope surface 12 which is in contact with the roller 22 and drives the other end of the crank 21 to be far away from the liquid tank 23. Wherein, the first sloping surface 11 and the second sloping surface 12 intersect or are tangent to each other, and the first sloping surface 11 and the second sloping surface 12 are arc surfaces or planes.
Thus, the lug 1 descends along with the lifting arm, and when the roller 22 contacts with the first slope 11, the roller can slide along the first slope and drive the other end of the crank 21 to extrude the liquid tank 23, so that liquid is sprayed to the surface of the tap before tapping; the lug 1 rises along with the lifting arm, and when the roller 22 is in contact with the second slope surface 12, the roller can slide along the second slope surface and drive the other end of the crank 21 to extrude the liquid tank 23 again so as to realize the purpose of spraying liquid to the surface of the tap after tapping.
In addition, in order to facilitate the resetting of the crank 21 after contacting the first slope surface, the crank 21 is pivotally connected by a mounting frame 24, and a torsion spring 25 is further sleeved on a pivot shaft between the crank 21 and the mounting frame 24.
The working process of the tapping and liquid spraying device 10 of the embodiment is as follows:
when ready to tap, roller 22 is mounted under drill press lift arm lug 1, as shown in figure 1.
As shown in fig. 3, the upper end of the spray inlet 232 is connected to a reservoir, which is typically of such a capacity that one revolution of coolant or lubricant can be used to contact the roller 22 mounted on the drill lift arm boss 1 when the drill lift arm lowers the tap front into contact with the workpiece. At this time, the bearing roller 22 makes the crank 21 press the silica gel liquid tank 23 by using the pin of the crank 21 as the rotation center under the action of the slope of the convex block 1, so as to force the cooling lubricant liquid stored in the liquid tank 23 to be sprayed out from the mouth of the liquid spraying output pipe 231, so that the surface of the tap has certain lubrication, thereby ensuring the lubrication of the tap during operation
As shown in FIG. 4, as the drill press boom continues to lower the tap into the work piece, the roller 22 is disengaged from the lug 1 mounted on the drill press boom. At this time, the crank 21 leaves the silica gel liquid tank 23 by the action of the torsion spring with the pin of the crank 21 as the rotation center, and at this time, no lubricating liquid is sprayed out of the liquid spraying output pipe, so that the surface of the workpiece is kept clean.
When the work piece tapping is completed and the drill press lifting arm returns upwardly, the roller 22 again contacts the lug 1 mounted on the drill press lifting arm, as shown in fig. 5. At the moment, the crank 21 presses the silica gel liquid tank 23 again by taking the crank 21 pin as a rotation center under the action of the torsion spring, at the moment, the spraying output pipe is sprayed with lubricating liquid again, and the spraying purpose is to remove residual metal powder on the surface of the tap, so that the tap is cleaned and waits for the next work to ensure the tapping quality.
As shown in fig. 6, the operation state is restored.
Based on the same technical concept, the invention also provides tapping equipment.
In one embodiment, as shown in fig. 1, the tapping apparatus includes: the drilling machine 20, the lifting arm 30, the tap 40 and the tapping and liquid spraying device 10.
One end of the lifting arm 30 is installed on the drilling machine 20, the tap 40 is connected to the other end of the lifting arm 30, and the tapping and liquid spraying device 10 comprises: a projection 1 and a liquid spraying mechanism 2; the bump 1 is arranged on the lifting arm 30, and the liquid spraying mechanism 2 is arranged on one side of the lifting arm 30 and comprises: the device comprises a crank 21, a roller 22 and a liquid tank 23, wherein the crank 21 is pivotally connected to one side of the liquid tank 23, the roller 22 is pivotally connected to one end of the crank 21, the bump 1 touches the roller 22 along with the lifting of the lifting arm 30 and drives the crank 21 to perform pivoting motion, the other end of the crank 21 can extrude the liquid tank 23 along with the self pivoting motion, a liquid spraying output pipe is connected to the bottom of the liquid tank 23, and one end of the liquid spraying output pipe extends to a screw tap 40 connected to the lifting arm 30. In one embodiment, the tap 40 is attached to the other end of the lift arm 30 by a tap sleeve or spring clip 50.
In conclusion, the tapping liquid spraying device disclosed by the invention automatically sprays cooling liquid or lubricant to the tap before and after tapping, so that not only is the metal chips remained on the surface of the tap in the tapping process beneficial to being clear, but also the effects of cooling and lubricating are achieved, and the tapping quality of workpieces or products is favorably ensured.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (10)
1. A tapping liquid spray apparatus, characterized in that the tapping liquid spray apparatus comprises: a projection and a liquid spraying mechanism;
the lug sets up on tapping equipment's lifing arm, hydrojet mechanism is located one side of lifing arm, it includes: the liquid spraying device comprises a crank, a roller and a liquid tank, wherein the crank is pivotally connected to one side of the liquid tank, the roller is pivotally connected to one end of the crank, a bump is touched by the roller along with the lifting arm, the crank is driven to perform pivoting motion, the other end of the crank can extrude the liquid tank along with the self pivoting motion, a liquid spraying output pipe is connected to the bottom of the liquid tank, and one end of the liquid spraying output pipe extends to a screw tap position connected to the lifting arm.
2. The liquid spraying apparatus for tapping of claim 1 wherein said projection has a first ramp and a second ramp for contacting said roller and urging the other end of said crank against said tank.
3. The liquid spray tapping apparatus of claim 2 wherein said first ramp surface and said second ramp surface intersect or are tangent to each other.
4. The liquid spray tapping apparatus of claim 3 wherein said first and second ramp surfaces are arcuate or planar.
5. The liquid tapping and spraying device of claim 1 wherein said crank is capable of squeezing said tank crank arm less than the length of the crank arm pivotally connected to said roller.
6. The liquid spraying apparatus for tapping of claim 1 wherein the crank is pivotally connected to the mounting bracket, and a torsion spring is further mounted on the pivot between the crank and the mounting bracket.
7. The liquid tapping and spraying device of claim 1, wherein a liquid spraying input pipe is further connected to the top of the liquid tank.
8. The liquid spraying apparatus for tapping according to claim 1, wherein the liquid tank is made of silica gel.
9. A tapping apparatus, characterized in that the tapping apparatus comprises: the device comprises a drilling machine, a lifting arm, a screw tap and a tapping liquid spraying device;
lifting arm one end install in on the drilling machine, the screw tap connect in lifting arm's the other end, tapping hydrojet device includes: a projection and a liquid spraying mechanism;
the lug set up in on the lifing arm, hydrojet mechanism is located one side of lifing arm, it includes: the liquid spraying device comprises a crank, a roller and a liquid tank, wherein the crank is pivotally connected to one side of the liquid tank, the roller is pivotally connected to one end of the crank, a bump is touched by the roller along with the lifting arm, the crank is driven to perform pivoting motion, the other end of the crank can extrude the liquid tank along with the self pivoting motion, a liquid spraying output pipe is connected to the bottom of the liquid tank, and one end of the liquid spraying output pipe extends to a screw tap position connected to the lifting arm.
10. The tapping apparatus of claim 9 wherein said tap is connected to the other end of said lifting arm by a tap sleeve or a spring clip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010259981.7A CN111299721A (en) | 2020-04-03 | 2020-04-03 | Tapping liquid spraying device and tapping equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010259981.7A CN111299721A (en) | 2020-04-03 | 2020-04-03 | Tapping liquid spraying device and tapping equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111299721A true CN111299721A (en) | 2020-06-19 |
Family
ID=71154005
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010259981.7A Pending CN111299721A (en) | 2020-04-03 | 2020-04-03 | Tapping liquid spraying device and tapping equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111299721A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114147302A (en) * | 2021-11-11 | 2022-03-08 | 赣州伦耀电子商务有限公司 | Long-strip-block thread tapping device |
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| CN205673629U (en) * | 2016-06-06 | 2016-11-09 | 湖州富科达精密机械有限公司 | A kind of automatic removing foreign matter the numerical control drilling machine saving coolant |
| CN109176904A (en) * | 2018-09-04 | 2019-01-11 | 臧晨晨 | A kind of diamond wire saw equipment |
| CN110842630A (en) * | 2019-09-07 | 2020-02-28 | 浙江合奥机械科技有限公司 | Self-cleaning device for workpiece punching |
| CN211991297U (en) * | 2020-04-03 | 2020-11-24 | 苏州康诺管业有限公司 | Tapping liquid spraying device and tapping equipment |
-
2020
- 2020-04-03 CN CN202010259981.7A patent/CN111299721A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR200373049Y1 (en) * | 2004-10-08 | 2005-01-15 | 한국생산기술연구원 | Oil providing device for automatic machining device controlled by optimized machining controller |
| CN205673629U (en) * | 2016-06-06 | 2016-11-09 | 湖州富科达精密机械有限公司 | A kind of automatic removing foreign matter the numerical control drilling machine saving coolant |
| CN109176904A (en) * | 2018-09-04 | 2019-01-11 | 臧晨晨 | A kind of diamond wire saw equipment |
| CN110842630A (en) * | 2019-09-07 | 2020-02-28 | 浙江合奥机械科技有限公司 | Self-cleaning device for workpiece punching |
| CN211991297U (en) * | 2020-04-03 | 2020-11-24 | 苏州康诺管业有限公司 | Tapping liquid spraying device and tapping equipment |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114147302A (en) * | 2021-11-11 | 2022-03-08 | 赣州伦耀电子商务有限公司 | Long-strip-block thread tapping device |
| CN114147302B (en) * | 2021-11-11 | 2023-09-08 | 衡阳市盟森电力设备有限公司 | Strip block thread tapping device |
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Effective date of registration: 20221109 Address after: No. 2, Huyang Road, Hushuguan Town, Suzhou Hi tech Zone, Jiangsu Province, 215000 Applicant after: SUZHOU RONGWEI INDUSTRY & TRADE Co.,Ltd. Address before: No. 2, Huyang Road, Hushuguan Town, Suzhou Hi tech Zone, Jiangsu Province, 215000 Applicant before: Suzhou Connaught Pipe Industry Co.,Ltd. |