CN104308024A - Material conveying device of full-automatic sheet metal punching and shearing machine for steel office furniture - Google Patents
Material conveying device of full-automatic sheet metal punching and shearing machine for steel office furniture Download PDFInfo
- Publication number
- CN104308024A CN104308024A CN201410537070.0A CN201410537070A CN104308024A CN 104308024 A CN104308024 A CN 104308024A CN 201410537070 A CN201410537070 A CN 201410537070A CN 104308024 A CN104308024 A CN 104308024A
- Authority
- CN
- China
- Prior art keywords
- material conveying
- feed
- plate
- feeding
- full
- 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.)
- Granted
Links
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 20
- 239000010959 steel Substances 0.000 title claims abstract description 20
- 238000004080 punching Methods 0.000 title claims abstract description 16
- 238000010008 shearing Methods 0.000 title claims abstract description 14
- 239000000463 material Substances 0.000 title abstract 26
- 239000002184 metal Substances 0.000 title abstract 5
- 229910052751 metal Inorganic materials 0.000 title abstract 5
- 230000007246 mechanism Effects 0.000 claims abstract description 46
- 230000005540 biological transmission Effects 0.000 claims abstract description 6
- 238000009826 distribution Methods 0.000 claims description 6
- 230000033001 locomotion Effects 0.000 claims description 6
- 150000002739 metals Chemical class 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- VIKNJXKGJWUCNN-XGXHKTLJSA-N norethisterone Chemical compound O=C1CC[C@@H]2[C@H]3CC[C@](C)([C@](CC4)(O)C#C)[C@@H]4[C@@H]3CCC2=C1 VIKNJXKGJWUCNN-XGXHKTLJSA-N 0.000 description 1
- 230000009711 regulatory function Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D43/00—Feeding, positioning or storing devices combined with, or arranged in, or specially adapted for use in connection with, apparatus for working or processing sheet metal, metal tubes or metal profiles; Associations therewith of cutting devices
- B21D43/02—Advancing work in relation to the stroke of the die or tool
- B21D43/026—Combination of two or more feeding devices provided for in B21D43/04 - B21D43/18
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D43/00—Feeding, positioning or storing devices combined with, or arranged in, or specially adapted for use in connection with, apparatus for working or processing sheet metal, metal tubes or metal profiles; Associations therewith of cutting devices
- B21D43/02—Advancing work in relation to the stroke of the die or tool
- B21D43/021—Control or correction devices in association with moving strips
- B21D43/023—Centering devices, e.g. edge guiding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D43/00—Feeding, positioning or storing devices combined with, or arranged in, or specially adapted for use in connection with, apparatus for working or processing sheet metal, metal tubes or metal profiles; Associations therewith of cutting devices
- B21D43/02—Advancing work in relation to the stroke of the die or tool
- B21D43/04—Advancing work in relation to the stroke of the die or tool by means in mechanical engagement with the work
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D43/00—Feeding, positioning or storing devices combined with, or arranged in, or specially adapted for use in connection with, apparatus for working or processing sheet metal, metal tubes or metal profiles; Associations therewith of cutting devices
- B21D43/02—Advancing work in relation to the stroke of the die or tool
- B21D43/04—Advancing work in relation to the stroke of the die or tool by means in mechanical engagement with the work
- B21D43/10—Advancing work in relation to the stroke of the die or tool by means in mechanical engagement with the work by grippers
- B21D43/11—Advancing work in relation to the stroke of the die or tool by means in mechanical engagement with the work by grippers for feeding sheet or strip material
Abstract
The invention relates to a material conveying device of a full-automatic sheet metal punching and shearing machine for steel office furniture. The material conveying device comprises a material conveying base, wherein the two sides of the direction vertical to the material conveying direction on the material conveying base are respectively provided with a set of material conveying mechanism , a material conveying passage for a sheet metal is arranged between the two sets of material conveying mechanisms, each material conveying mechanism comprises a material conveying screw rod, two grippers and a material conveying servo motor, each material conveying screw rod is arranged on a support plate of the corresponding material conveying mechanism through a material conveying screw rod support seat along the material conveying direction, the two grippers are connected with the corresponding material conveying screw rod by material conveying slide blocks, each material conveying servo motor is in transmission connection with the corresponding material conveying screw rod, and the two sets of material conveying mechanisms can be separately used to form a circulating relay so as to continuously convey the sheet metal; at least one of the two sets of material conveying mechanisms can be adjusted and moved on the material conveying base along the direction vertical to the material conveying direction. The material conveying device has the advantages that the conveying position is accurate, and the material conveying device is suitable for conveying the sheet metals with different widths.
Description
Technical field
The present invention relates to a kind of full-automatic steel office furniture plate punching and shearing machine, especially relate to a kind of full-automatic steel office furniture plate punching and shearing machine pay-off.
Background technology
According to different model steel office furniture (file cabinet, data cabinet, locker, compact shelving, bookcase, safety cabinet etc.) needs, length and the width of steel office furniture plate are different, existing steel office furniture plate punching equipment in the market, can only ensure to carry out punching processing to the plate of same model, for the plate of different in width, need to use another equipment adapted instead to process, this just requires that steel office furniture manufacturer must buy the equipment of Multiple Type, just can meet the needs of production, so cause the increase of production cost.
Summary of the invention
In order to solve the problems of the technologies described above, the invention provides a kind of full-automatic steel office furniture plate punching and shearing machine pay-off.
The present invention is for solve the problems of the technologies described above and the technical scheme that adopts is: a kind of full-automatic steel office furniture plate punching and shearing machine pay-off, comprise feeding base, both sides, direction perpendicular with feed direction on feeding base, be respectively equipped with a set of feed mechanism, plate transfer passage is formed between two cover feed mechanisms, described feed mechanism comprises feed screw, described feed screw is arranged in feed mechanism gripper shoe by feed screw supporting seat along feed direction, feed mechanism also comprises two tongs be connected with feed screw by feeding slide block, and the feeding servomotor to be in transmission connection with feed screw, two cover feed mechanisms individually use, thus form the continus convergence of continuous relay realization to plate, in described two cover feed mechanisms, have at least and a set ofly on feeding base, adjustment movement can be carried out along the direction perpendicular with feed direction, thus the conveying of the plate to different in width can be adapted to.
Preferably, described tong comprises cylinder, train wheel bridge and lower plate, train wheel bridge is fixedly connected with the piston rod external part of cylinder, the middle part of lower plate is hinged by the bottom of a hinged-support and cylinder block, one end of lower plate is the working end of matching with train wheel bridge, the other end is non-operative end, and described non-operative end is fixed on a connecting rod, and the other end of described connecting rod is also fixedly connected with the piston rod external part of cylinder by a connector.
Preferably, described train wheel bridge is Z-shaped, and its one end is fixedly connected with the piston rod external part of cylinder, and described connector is that train wheel bridge is connected with piston rod the extension of one end.
Preferably, the feeding adjusting screw that described feed mechanism gripper shoe is arranged on feeding base by the direction that adjustment slide block is vertical with feeding with edge is connected, also be provided with for adjusting the mobile guide rail slide block led to feed mechanism secondary between described feed mechanism gripper shoe and feeding base, the guide runner in described guide rail slide block pair is fixedly connected with feed mechanism gripper shoe.
Preferably, feeding base is positioned at the position of transfer passage, also be provided with for the passive a plurality of contour support column of plate, each support column to be all arranged on feeding base in corresponding hole by a Compress Spring, a plurality of support column is two row's distributions along feed direction, and the multiple support columns in each row are crisscross arranged.
Preferably, on feeding base, the rear and front end of feed direction is respectively equipped with plate transportation guide device, described plate transportation guide device comprises a directive wheel bracing frame and is horizontally set on four directive wheels of the rectangular distribution on directive wheel bracing frame, forms the gap for leading to plate between every a pair vertical two roller distributed up and down.
Beneficial effect:
Feed mechanism of the present invention adopts driven by servomotor, lead screw transmission, can ensure that transfer position is accurate, and because the distance between two driving mechanisms is adjustable, so go for the conveying of the steel office furniture plate of multiple different in width.
The preferred structure of tong can ensure to clamp and release in the course of conveying of plate and be swift in motion accurately, and has no damage to carried plate.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 be in Fig. 1 tong main TV structure schematic diagram.
Fig. 3 is the perspective view of tong.
Fig. 4 is the scheme of installation of plate transportation guide device on feeding base.
In figure, 1, support column, 2, feeding adjusting screw, 3, feeding slide block, 4, tong, 401, train wheel bridge, 402, lower plate, 403, hinged-support, 404, connecting rod, 405, connector, 406, piston rod, 5, feed mechanism gripper shoe, 6, feed screw, 7, feeding servomotor, 8, feed screw supporting seat, 9, feeding base, 10, guide runner, 11, guiding rail, 12, directive wheel bracing frame, 13, directive wheel, 14, plate width locating dowel.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, concrete detailed description is further done to the present invention.
As shown in the figure, a kind of full-automatic steel office furniture plate punching and shearing machine pay-off, comprise feeding base 9, both sides, direction perpendicular with feed direction on feeding base 9, be respectively equipped with a set of feed mechanism, plate transfer passage is formed between two cover feed mechanisms, described feed mechanism comprises feed screw 6, described feed screw 6 is arranged in feed mechanism gripper shoe 5 by feed screw supporting seat 8 along feed direction, feed mechanism also comprises two tongs 4 be connected with feed screw 6 by feeding slide block 3, and the feeding servomotor 7 to be in transmission connection with feed screw 6, two cover feed mechanisms individually use, thus form the continus convergence of continuous relay realization to plate, in described two cover feed mechanisms, have at least and a set ofly on feeding base, adjustment movement can be carried out along the direction perpendicular with feed direction, thus the conveying of the plate to different in width can be adapted to.
Described tong comprises cylinder, train wheel bridge 401 and lower plate 402, train wheel bridge 401 is fixedly connected with piston rod 406 external part of cylinder, the middle part of lower plate 402 is hinged by the bottom of a hinged-support 403 with cylinder block, one end of lower plate 402 is the working end of matching with train wheel bridge 401, the other end is non-operative end, described non-operative end is fixed on a connecting rod 404, and the other end of described connecting rod 404 is also fixedly connected with piston rod 406 external part of cylinder by a connector 405.Like this when cylinder action, time piston rod 406 carries out stretching, train wheel bridge 401 and lower plate 402 can clamp simultaneously or discharge plate, such structure not only can ensure to clamp and release and be swift in motion accurately, and clamp and release due to train wheel bridge 401 and lower plate 402, can also avoid causing damage to plate. simultaneously
Two tongs of the same set of feed mechanism of the present embodiment are connected with corresponding feed screw 6 by same feeding slide block 3, more effectively can ensure the relative position between two tongs, thus ensure more stable to the clamping of plate.
During making, can described train wheel bridge 401 be made Z-shaped, one end of Z-shaped train wheel bridge 401 is fixedly connected with piston rod 406 external part of cylinder, described connector 405 is that train wheel bridge 401 and piston rod 406 are connected the extension of one end, certainly described connector 405 also can make separately, is then fixedly connected with piston rod 406.
The feeding adjusting screw 2 that described feed mechanism gripper shoe 5 is arranged on feeding base 9 by the direction that adjustment slide block (not shown in FIG.) and edge are vertical with feeding is connected, also be provided with for adjusting the mobile guide rail slide block led to feed mechanism secondary between described feed mechanism gripper shoe 5 and feeding base 9, the guide runner 10 in described guide rail slide block pair is fixedly connected with feed mechanism gripper shoe 5.Guiding rail 11 is wherein fixed on feeding base 9, and it is secondary that this detailed description of the invention is provided with two cover guide rail slide blocks, is arranged in the both sides of feeding adjusting screw 2, and guide rail 11 and feeding adjusting screw 2 be arranged in parallel.Feeding adjusting screw 2 can drive feed mechanism gripper shoe 5 to move along the direction vertical with feeding under power drive, thus drives whole feed mechanism to move, thus makes this pay-off can be adapted to the conveying of plates with different widths.Feed mechanism, in the process of movement, carries out support guide by guiding rail 11 and guide runner 10.
Feeding base 9 is positioned at the position of transfer passage, also be provided with for the passive a plurality of contour support column 1 of plate, each support column to be all arranged on feeding base 9 in corresponding hole by a Compress Spring, a plurality of support column 1 is two row's distributions along feed direction, and the multiple support columns 1 in each row are crisscross arranged.Such structure ensures that plate is advanced forward without barrier at course of conveying milli and can not be subject to any damage.
On feeding base 9, the rear and front end of feed direction is respectively equipped with plate transportation guide device, described plate transportation guide device comprises a directive wheel bracing frame 12 and is horizontally set on four directive wheels 13 of the rectangular distribution on directive wheel bracing frame 12, forms the gap for leading to plate between every a pair vertical two roller distributed up and down.
The present invention adopts driven by servomotor, lead screw transmission, and transfer position is accurate.The present invention has width (direction along vertical with feeding) regulatory function, thus makes the present invention can be adapted to the conveying of the plate of the multiple different width dimensions of various steel office furniture.
Claims (6)
1. a full-automatic steel office furniture plate punching and shearing machine pay-off, it is characterized in that: comprise feeding base (9), the both sides, direction upper at feeding base (9) and feed direction is perpendicular, be respectively equipped with a set of feed mechanism, plate transfer passage is formed between two cover feed mechanisms, described feed mechanism comprises feed screw (6), described feed screw (6) is arranged in feed mechanism gripper shoe (5) by feed screw supporting seat (8) along feed direction, feed mechanism also comprises two tongs (4) be connected with feed screw (6) by feeding slide block (3), and the feeding servomotor (7) to be in transmission connection with feed screw (6), two cover feed mechanisms individually use, thus form the continus convergence of continuous relay realization to plate, in described two cover feed mechanisms, have at least and a set ofly on feeding base, adjustment movement can be carried out along the direction perpendicular with feed direction, thus the conveying of the plate to different in width can be adapted to.
2. one according to claim 1 full-automatic steel office furniture plate punching and shearing machine pay-off, it is characterized in that: described tong comprises cylinder, train wheel bridge (401) and lower plate (402), train wheel bridge (401) is fixedly connected with piston rod (406) external part of cylinder, the middle part of lower plate (402) is hinged by the bottom of a hinged-support (403) with cylinder block, one end of lower plate (402) is the working end of matching with train wheel bridge (401), the other end is non-operative end, described non-operative end is fixed on a connecting rod (404), the other end of described connecting rod (404) is also fixedly connected with piston rod (406) external part of cylinder by a connector (405).
3. one according to claim 2 full-automatic steel office furniture plate punching and shearing machine pay-off, it is characterized in that: described train wheel bridge (401) is in Z-shaped, its one end is fixedly connected with piston rod (406) external part of cylinder, and described connector (405) to be connected with piston rod (406) extension of one end for train wheel bridge (401).
4. one according to claim 1 full-automatic steel office furniture plate punching and shearing machine pay-off, it is characterized in that: the feeding adjusting screw (2) that described feed mechanism gripper shoe (5) is arranged on feeding base (9) by the direction that adjustment slide block is vertical with feeding with edge is connected, also be provided with for adjusting the mobile guide rail slide block led to feed mechanism secondary between described feed mechanism gripper shoe (5) and feeding base (9), the guide runner (10) in described guide rail slide block pair is fixedly connected with feed mechanism gripper shoe (5).
5. one according to claim 1 full-automatic steel office furniture plate punching and shearing machine pay-off, it is characterized in that: the position being positioned at transfer passage on feeding base (9), also be provided with for the passive a plurality of contour support column (1) of plate, each support column is all arranged in the upper corresponding hole of feeding base (9) by a Compress Spring, a plurality of support column (1) is two row's distributions along feed direction, and the multiple support columns (1) in each row are crisscross arranged.
6. one according to claim 1 full-automatic steel office furniture plate punching and shearing machine pay-off, it is characterized in that: be respectively equipped with plate transportation guide device in the rear and front end of the upper feed direction of feeding base (9), described plate transportation guide device comprises a directive wheel bracing frame (12) and is horizontally set on four directive wheels (13) of the rectangular distribution on directive wheel bracing frame (12), forms the gap for leading to plate between every a pair vertical two roller distributed up and down.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410537070.0A CN104308024B (en) | 2014-10-13 | 2014-10-13 | A kind of full-automatic steel office furniture plate punching and shearing machine pay-off |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410537070.0A CN104308024B (en) | 2014-10-13 | 2014-10-13 | A kind of full-automatic steel office furniture plate punching and shearing machine pay-off |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104308024A true CN104308024A (en) | 2015-01-28 |
| CN104308024B CN104308024B (en) | 2016-04-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410537070.0A Active CN104308024B (en) | 2014-10-13 | 2014-10-13 | A kind of full-automatic steel office furniture plate punching and shearing machine pay-off |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104308024B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105382108A (en) * | 2015-12-29 | 2016-03-09 | 湖南大学 | Self-adaption material width determination device for progressive die |
| CN108311605A (en) * | 2018-01-04 | 2018-07-24 | 昆山巧乐机器人有限公司 | Plate stamping combines feeding system |
| CN111872250A (en) * | 2020-07-23 | 2020-11-03 | 安徽春晟机械有限公司 | Metal part stamping auxiliary equipment for production of shock absorber accessories |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US6065325A (en) * | 1999-05-26 | 2000-05-23 | Tsai; Sou-Jun | Automatic stamping machine |
| CN101722246A (en) * | 2009-11-06 | 2010-06-09 | 吴江市华源印铁制罐有限责任公司 | Numerical control feeding table |
| CN202185531U (en) * | 2011-07-29 | 2012-04-11 | 台州市通益机械设备有限公司 | Feeder of automatic numerical control stamping device |
| CN203495067U (en) * | 2013-03-21 | 2014-03-26 | 安徽中德机床股份有限公司 | Automatic material delivery system of numerical control plate shearing machine |
| CN203711583U (en) * | 2014-01-24 | 2014-07-16 | 广东合迪科技有限公司 | Aluminum template punching device |
| CN204171211U (en) * | 2014-10-13 | 2015-02-25 | 洛阳珩逸机械设备有限公司 | A kind of full-automatic steel office furniture plate punching and shearing machine pay-off |
-
2014
- 2014-10-13 CN CN201410537070.0A patent/CN104308024B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6065325A (en) * | 1999-05-26 | 2000-05-23 | Tsai; Sou-Jun | Automatic stamping machine |
| CN101722246A (en) * | 2009-11-06 | 2010-06-09 | 吴江市华源印铁制罐有限责任公司 | Numerical control feeding table |
| CN202185531U (en) * | 2011-07-29 | 2012-04-11 | 台州市通益机械设备有限公司 | Feeder of automatic numerical control stamping device |
| CN203495067U (en) * | 2013-03-21 | 2014-03-26 | 安徽中德机床股份有限公司 | Automatic material delivery system of numerical control plate shearing machine |
| CN203711583U (en) * | 2014-01-24 | 2014-07-16 | 广东合迪科技有限公司 | Aluminum template punching device |
| CN204171211U (en) * | 2014-10-13 | 2015-02-25 | 洛阳珩逸机械设备有限公司 | A kind of full-automatic steel office furniture plate punching and shearing machine pay-off |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105382108A (en) * | 2015-12-29 | 2016-03-09 | 湖南大学 | Self-adaption material width determination device for progressive die |
| CN108311605A (en) * | 2018-01-04 | 2018-07-24 | 昆山巧乐机器人有限公司 | Plate stamping combines feeding system |
| CN108311605B (en) * | 2018-01-04 | 2019-06-18 | 昆山巧乐机器人有限公司 | Plate stamping combines feeding system |
| CN111872250A (en) * | 2020-07-23 | 2020-11-03 | 安徽春晟机械有限公司 | Metal part stamping auxiliary equipment for production of shock absorber accessories |
| CN111872250B (en) * | 2020-07-23 | 2022-09-06 | 安徽春晟机械有限公司 | Metal part stamping auxiliary equipment for production of shock absorber accessories |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104308024B (en) | 2016-04-06 |
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Effective date of registration: 20191216 Address after: 471000 room 319, Fuhe innovation science park, No. 2, Zhenxing Road, Huizu District, Fuhe, Luoyang City, Henan Province Patentee after: Luoyang longhui Intelligent Technology Co.,Ltd. Address before: Luoyang City, Henan province 471002 Chanhe Kiln Village Industrial Park Patentee before: LUOYANG HENGYI MACHINERY EQUIPMENT Co.,Ltd. |
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Effective date of registration: 20210616 Address after: 471000 Zhongyao Village Industrial Park, Fuhe District, Luoyang City, Henan Province Patentee after: LUOYANG HENGYI MACHINERY EQUIPMENT Co.,Ltd. Address before: 471000 in the courtyard of Fuhe innovation and Technology Park, No.2 Zhenxing Road, Fuhe Hui District, Luoyang City, Henan Province (room 319, original office building) Patentee before: Luoyang longhui Intelligent Technology Co.,Ltd. |
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Effective date of registration: 20240123 Address after: 471000 in the courtyard of Fuhe innovation and Technology Park, No.2 Zhenxing Road, Fuhe Hui District, Luoyang City, Henan Province (room 319, original office building) Patentee after: Luoyang longhui Intelligent Technology Co.,Ltd. Guo jiahuodiqu after: Zhong Guo Address before: 471000 Zhongyao Village Industrial Park, Fuhe District, Luoyang City, Henan Province Patentee before: LUOYANG HENGYI MACHINERY EQUIPMENT Co.,Ltd. Guo jiahuodiqu before: Zhong Guo |