CN116021018B - Steel reducing elbow hot-press forming die - Google Patents
Steel reducing elbow hot-press forming die Download PDFInfo
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- CN116021018B CN116021018B CN202310050306.7A CN202310050306A CN116021018B CN 116021018 B CN116021018 B CN 116021018B CN 202310050306 A CN202310050306 A CN 202310050306A CN 116021018 B CN116021018 B CN 116021018B
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- 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
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/50—Glass production, e.g. reusing waste heat during processing or shaping
- Y02P40/57—Improving the yield, e-g- reduction of reject rates
Abstract
The invention discloses a hot-press forming die for a steel reducing elbow, and relates to the technical field of reducing elbow manufacturing. Comprising the following steps: supporting the butt-pressing assembly; the supporting and pressing assembly comprises a supporting bottom plate, wherein diamond plates are fixedly arranged on the left side and the right side of a middle shaft at the top of the supporting bottom plate, and a hydraulic push rod is fixedly arranged on one side, close to each other, of each diamond plate; the forming assembly comprises a die, wherein a cross is fixedly arranged on one side, close to each other, of the die, and a fixing rod is fixedly arranged on one side, close to each other, of the cross. According to the invention, by supporting the opposite-pressure assembly, a worker starts the hydraulic push rod, two tightly attached moulds are gradually separated, and the fixed hollow block moves along with the moulds.
Description
Technical Field
The invention relates to the field of manufacturing of reducing elbows, in particular to a hot-press forming die for a steel reducing elbow.
Background
The reducing elbow has the function of connecting two pipes with different diameters, so that the pipeline makes ninety-degree turns and the drift diameter is reduced;
the reducing elbow is manufactured in a hot-press forming mode, but due to the fact that the two ends of the reducing elbow are different in size, workers are difficult to perform demoulding operation, a large amount of time is required to be consumed, and the working efficiency is affected to a certain extent.
Disclosure of Invention
In order to solve the technical problems, the invention provides a steel reducing elbow hot-press forming die, which comprises:
supporting the butt-pressing assembly;
the supporting and pressing assembly comprises a supporting bottom plate, wherein diamond plates are fixedly arranged on the left side and the right side of a middle shaft at the top of the supporting bottom plate, and a hydraulic push rod is fixedly arranged on one side, close to each other, of each diamond plate;
the forming assembly comprises a die, wherein a cross is fixedly arranged on one side, close to each other, of the die, a fixing rod is fixedly arranged on one side, close to each other, of the two cross, one end, far away from the cross, of the fixing rod is fixedly connected with a fixing plate, and the inner surface of the fixing plate is fixedly connected with the outer surface of the die;
the hydraulic push rod is fixedly connected with the mould through a cross, a forming groove is formed in one side, close to each other, of each of the two moulds, an opening is formed in the top end of each of the two moulds, the opening is communicated with the forming groove, the inner wall of each opening is tightly contacted with the outer surface of the elbow rod, and one side, close to each other, of each of the four fixed hollow blocks is contacted with the left side and the right side of the elbow rod;
the molding assembly comprises a bent rod, the left side and the right side of the outer surface of the bent rod are respectively contacted with reducing bends, one ends of the reducing bends, which are far away from the bent rod, are mutually contacted with the inner wall of the molding groove, one sides of the reducing bends, which are close to each other, are contacted with a baffle, and the baffle is fixedly connected with the bent rod.
Further, two right angle grooves are formed in one sides, away from each other, of the rhombus plates, right angle rods are fixedly mounted in the right angle grooves, connecting rods are fixedly connected to one sides, close to each other, of the right angle rods, trapezoid plates are fixedly connected to one sides, close to each other, of the rhombus plates, the trapezoid plates are fixedly connected with the supporting bottom plates, and one sides, close to each other, of the supporting bottom plates are in contact with the lower end of the outer surface of the die.
Further, two semicircle pillar grooves are formed in the lower ends of the molds, the semicircle pillar grooves are communicated with the forming grooves, unidirectional material conveying components are arranged in the semicircle pillar grooves, the mold on the left side is close to one end fixedly connected with an inserting block on the right side, the mold on the right side is close to one end of the mold on the left side, a socket is formed in one end of the mold on the right side, and the shape and the size of the inserting block are mutually matched with those of the socket.
Further, mould type subassembly includes fixed hollow block, straight-bar and supporting shoe, fixed plate fixed connection is in the mould upper end, the straight-bar transversely sets up in the inside axis department of fixed hollow block, supporting shoe fixed connection is at the straight-bar and keep away from the one end of fixed hollow block, the one end and the connecting rod fixed connection of fixed hollow block are kept away from to the straight-bar, and the diameter distance of connecting rod is greater than the diameter distance of straight-bar, the one end that the connecting rod was kept away from to the straight-bar runs through fixed hollow block and elbow pole side fixed connection, the straight-bar outside is provided with spring one, spring one end and supporting shoe fixed connection, and spring one other end and fixed hollow block inner wall fixed connection.
Further, the unidirectional material conveying assembly comprises a material conveying pipe, a cylindrical block, a fixing frame, a round rod, an extrusion plate and a stress pushing plate, wherein the cylindrical block is fixed inside the material conveying pipe through the fixing frame, the round rod is slidably connected inside the cylindrical block, the extrusion plate is slidably connected inside the cylindrical block, the stress pushing plate is fixedly connected to the bottom of the round rod, the bottom of the extrusion plate is mutually contacted with the bottom of the inner wall of the cylindrical block, the top of the extrusion plate is fixedly connected with a second spring, the second spring is sleeved on the outer surface of the round rod, the top of the second spring is fixedly connected with the top of the inner wall of the cylindrical block, the bottom of the cylindrical block is fixedly connected with a cylindrical sleeve, the top of the material conveying pipe is spliced with a material blocking block, the bottom of the material blocking block is fixedly connected with the top of the round rod, and the inner surface of the cylindrical sleeve is mutually contacted with the outer surface of the round rod.
The invention has the beneficial effects that
According to the invention, by supporting the opposite-pressing assembly, a worker starts the hydraulic push rod, two tightly attached molds can be gradually separated, and the fixed hollow block moves along with the molds;
according to the invention, through the molding assembly, after the molds on the left side and the right side are moved to a certain position, a worker can take down the reducing elbow on the left side and the right side of the elbow rod before going up, then a new round of molding work is carried out, and the molding grooves of the two molds can be separated through the partition plate, so that the reducing elbow can be divided into two halves, and the reducing elbow is convenient to take down from the elbow rod.
According to the invention, through the unidirectional material conveying assembly, the stressed push plate is extruded by the molding material to drive the round rod to move upwards, the extrusion plate moves along with the round rod and simultaneously extrudes the second spring, at the moment, the material blocking block is separated from the material conveying pipe, the molding material can smoothly enter the molding groove of the mold, when the molding material in the molding groove is in a full state and no molding material is conveyed in the material conveying pipe, the material blocking block is re-inserted in the material conveying pipe under the traction of the elastic force of the second spring and the extrusion of the molding material, so that the situation that the molding material in the molding groove flows out of the material conveying pipe can be avoided, and the effect of limiting the molding material in the molding groove is achieved.
According to the invention, the plug blocks can be mutually spliced and matched with the sockets, so that the tightness between the two dies is improved, the situation that gaps are formed on the outer surfaces of the reducing bends after the reducing bends are formed is avoided, the fixing plates are fixedly arranged around the outer surfaces of the dies, so that the contact points of the two dies can be homogenized after being stressed, the moving distance of the stressed pushing plate can be limited through the cylindrical sleeve, and the problem that the blocking block can be excessively stretched out to cause the blocking block to be unable to return to the original position is avoided.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present invention;
FIG. 2 is a schematic view of the overall structure of the support and crush assembly of the present invention;
FIG. 3 is a schematic view of the overall structure of the molding assembly of the present invention;
FIG. 4 is a schematic view of the overall structure of the mold of the present invention;
FIG. 5 is a schematic view of the overall structure of the molding assembly of the present invention;
fig. 6 is a schematic view of the internal structure of the unidirectional feeding assembly of the present invention.
1. Supporting the butt-pressing assembly; 11. a support base plate; 12. a diamond plate; 13. a right angle lever; 14. a connecting rod; 15. a hydraulic push rod; 16. a trapezoidal plate; 2. a molding assembly; 21. a mold; 22. a cross; 23. a fixed rod; 24. a fixing plate; 25. inserting blocks; 26. a unidirectional material conveying component; 261. a material conveying pipe; 262. a cylindrical block; 263. a fixing frame; 264. a round bar; 265. an extrusion plate; 266. a force-bearing push plate; 267. a cylindrical sleeve; 268. a material blocking block; 3. molding the assembly; 31. a bent head rod; 33. reducing elbow; 32. a partition plate; 34. fixing the hollow block; 35. a straight rod; 36. and a supporting block.
Detailed Description
The invention will be described in further detail with reference to the drawings and the detailed description. The embodiments of the invention have been presented for purposes of illustration and description, and are not intended to be exhaustive or limited to the invention in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, and to enable others of ordinary skill in the art to understand the invention for various embodiments with various modifications as are suited to the particular use contemplated.
Example 1
Referring to fig. 1-5, the present invention is a steel reducing elbow hot press forming die, comprising:
supporting the butt-pressing assembly 1;
the supporting and opposite-pressing assembly 1 comprises a supporting bottom plate 11, wherein diamond plates 12 are fixedly arranged on the left side and the right side of a middle shaft at the top of the supporting bottom plate 11, and a hydraulic push rod 15 is fixedly arranged on one side, close to each other, of each diamond plate 12;
the forming assembly 2 comprises dies 21, cross frames 22 are fixedly arranged on one sides of the two dies 21, which are close to each other, fixing rods 23 are fixedly arranged on one sides of the two cross frames 22, which are close to each other, fixing plates 24 are fixedly connected to one ends of the fixing rods 23, which are far away from the cross frames 22, and the inner surfaces of the fixing plates 24 are fixedly connected with the outer surfaces of the dies 21, and the fixing plates 24 are fixedly arranged around the outer surfaces of the dies 21 through the fixing plates 24, so that the contact points of the two dies 21 can be homogenized after being stressed;
the hydraulic push rod 15 is fixedly connected with the dies 21 through the cross 22, a forming groove is formed in one side, close to each other, of each die 21, an opening is formed in the top end of each die 21, and the opening is communicated with the forming groove;
the molding assembly 3 comprises a bent rod 31, the left side and the right side of the outer surface of the bent rod 31 are respectively contacted with reducing bends 33, one ends of the two reducing bends 33 far away from the bent rod 31 are contacted with the inner wall of a molding groove, one sides of the two reducing bends 33 close to each other are contacted with a baffle plate 32, the baffle plate 32 is fixedly connected with the bent rod 31, and the molding grooves of the two dies 21 can be separated through the baffle plate 32, so that the reducing bends 33 can be divided into two halves, and the two reducing bends can be conveniently taken down from the bent rod 31.
A right angle groove is formed in one side, away from each other, of the two diamond plates 12, a right angle rod 13 is fixedly arranged in the right angle groove, a connecting rod 14 is fixedly connected to one side, close to each other, of the two right angle rods 13, a trapezoid plate 16 is fixedly connected to one side, close to each other, of the two diamond plates 12, and the trapezoid plate 16 is fixedly connected with the supporting bottom plate 11;
one side of the two supporting bottom plates 11, which are close to each other, is in contact with the lower end of the outer surface of the die 21, by supporting the opposite-pressing assembly 1, a worker starts the hydraulic push rod 15, the two dies 21 which are tightly attached together are gradually separated, the fixed hollow block 34 moves along with the dies 21, and the straight rod 35 is limited by the connecting rod 14 and cannot move, so that the elbow rod 31 and the reducing elbow 33 which is assisted on the outer surface of the elbow rod cannot move, the effect of automatic demoulding is achieved, and the working intensity of the worker is reduced.
The lower ends of the two dies 21 are provided with semicircular column grooves which are communicated with the forming grooves, a unidirectional material conveying assembly 26 is arranged in each semicircular column groove, an insert block 25 is fixedly connected to one end, close to the right die 21, of the left die 21, a socket is formed in one end, close to the left die 21, of the right die 21, the insert block 25 can be mutually inserted and matched with the socket through the insert block 25, the tightness between the two dies 21 is improved, and the situation that gaps are formed on the outer surface of a reducing elbow 33 after forming is avoided;
the shape and size of the plug 25 are mutually matched with those of the socket.
The shaping assembly 3 comprises a fixed hollow block 34, a straight rod 35 and a supporting block 36, wherein the fixed plate 24 is fixedly connected to the upper end of the die 21, the straight rod 35 is transversely arranged at the middle shaft in the fixed hollow block 34, the supporting block 36 is fixedly connected to the straight rod 35 and one end far away from the fixed hollow block 34, a first spring is arranged on the outer side of the straight rod 35, one end of the first spring is fixedly connected with the supporting block 36, the other end of the first spring is fixedly connected with the inner wall of the fixed hollow block 34, through the shaping assembly 3, after the dies 21 on the left side and the right side are moved to a certain position, workers can take down the reducing elbow 33 on the left side and the right side of the elbow rod 31 before going on, then a new round of shaping work is carried out, the demoulding mode is simple and takes very short time, and the workers can manufacture more reducing elbows 33 in a limited time.
One end of the straight rod 35 far away from the fixed hollow block 34 is fixedly connected with the connecting rod 14, the diameter distance of the connecting rod 14 is larger than that of the straight rod 35, and one end of the straight rod 35 far away from the connecting rod 14 penetrates through the fixed hollow block 34 and is fixedly connected with the side face of the elbow rod 31;
the inner wall of the opening is closely contacted with the outer surface of the elbow rod 31, and one side of the four fixed hollow blocks 34, which are close to each other, is contacted with the left side and the right side of the elbow rod 31.
Example 2
Distinguishing features from example 1;
referring to fig. 6, the present invention is a steel reducing elbow hot press forming die, comprising:
the unidirectional material conveying assembly 26 comprises a material conveying pipe 261, a cylindrical block 262, a fixing frame 263, a round rod 264, a squeezing plate 265 and a stress pushing plate 266, wherein the cylindrical block 262 is fixed inside the material conveying pipe 261 through the fixing frame 263, the round rod 264 is slidably connected inside the cylindrical block 262, the squeezing plate 265 is slidably connected inside the cylindrical block 262, the stress pushing plate 266 is fixedly connected to the bottom of the round rod 264, the unidirectional material conveying assembly 26 is used for enabling the stress pushing plate 266 to be squeezed by the molding material so as to drive the round rod 264 to move upwards, the squeezing plate 265 can follow the round rod 264 to move and simultaneously squeeze a second spring, at this time, the blocking block 268 is separated from the material conveying pipe 261, the molding material can smoothly enter into a molding groove of the mold 21, and when the molding material in the molding groove is in a full state and no molding material is conveyed inside the material conveying pipe 261, the blocking block 268 is re-inserted inside the material conveying pipe 261 under the elastic traction of the second spring and the extrusion of the molding material, so that the situation that the molding material in the molding groove can flow out of the material conveying pipe 261 can be avoided, and the effect of limiting the molding material in the molding groove is achieved.
The stripper plate 265 bottom and cylinder piece 262 inner wall bottom contact each other, stripper plate 265 top fixedly connected with spring two, and spring two cup joints at the round bar 264 surface, spring two top and cylinder piece 262 inner wall top fixed connection.
The cylinder sleeve 267 is fixedly connected with the bottom of the cylinder block 262, the material blocking block 268 is inserted into the top of the material conveying pipe 261, the bottom of the material blocking block 268 is fixedly connected with the top of the round rod 264, the inner surface of the cylinder sleeve 267 is mutually contacted with the outer surface of the round rod 264, the distance moved by the stress pushing plate 266 can be limited through the cylinder sleeve 267, and the problem that the material blocking block 268 can excessively extend to cause the non-return to the original position is avoided.
One specific application of this embodiment is:
the working personnel inserts the pipe that carries the shaping material on conveying pipeline 261, the atress push pedal 266 receives the shaping material extrusion and can drive round bar 264 to upwards remove, extrusion plate 265 can follow round bar 264 and remove simultaneously to carrying out extrusion to the spring two, the shaping material can be smoothly get into the shaping groove of mould 21 this moment, shaping material in the shaping groove is full state and conveying pipeline 261 inside does not have shaping material to carry, the shaping material pulling of spring two and the extrusion of shaping material are pegged graft again in conveying pipeline 261 inside, thereby the shaping material in the shaping groove can be avoided can be flowed out from conveying pipeline 261 the condition appearance, the effect that has reached to restrict shaping material in the shaping groove, after reducing elbow 33 takes shape in the shaping groove of mould 21, the staff starts hydraulic push rod 15, two moulds 21 that are closely laminated together can gradually break away from, fixed hollow block 34 moves along with mould 21, because 35 is limited by connecting rod 14 and auxiliary diameter elbow on its surface can not remove, reduce the automatic drawing of patterns, the reducing elbow 31 can be separated from the shaping groove on the both sides after the reducing elbow 31, the shaping elbow can be removed from the shaping groove by two bend 32 after the reducing the working position of a certain elbow, the elbow can be removed from the shaping position of the elbow 32 on the right side of the mould can be separated from the left and the elbow can be removed to the elbow 32.
It will be apparent that the described embodiments are only some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art and which are included in the embodiments of the present invention without the inventive step, are intended to be within the scope of the present invention. Structures, devices and methods of operation not specifically described and illustrated herein, unless otherwise indicated and limited, are implemented according to conventional means in the art.
Claims (5)
1. A steel reducing elbow hot press forming die, characterized by comprising:
supporting the butt-pressing assembly (1);
the supporting and pressing assembly (1) comprises a supporting bottom plate (11), wherein diamond plates (12) are fixedly arranged on the left side and the right side of a middle shaft at the top of the supporting bottom plate (11), and a hydraulic push rod (15) is fixedly arranged on one side, close to each other, of each diamond plate (12);
a forming assembly (2);
the forming assembly (2) comprises a die (21), wherein one side, close to the rhombus plate (12), of each die (21) is fixedly provided with a cross (22), one side, close to each other, of each cross (22) is fixedly provided with a fixing rod (23), one end, far away from the cross (22), of each fixing rod (23) is fixedly connected with a fixing plate (24), and the inner surface of each fixing plate (24) is fixedly connected with the outer surface of each die (21);
the hydraulic push rods (15) are fixedly connected with the dies (21) through cross frames (22), forming grooves are formed in one sides, close to each other, of the two dies (21), openings are formed in the top ends of the dies (21), and the openings are communicated with the forming grooves;
a molding assembly (3);
the molding assembly (3) comprises a bent rod (31), wherein the left side and the right side of the outer surface of the bent rod (31) are respectively contacted with reducing bends (33), one side of the two reducing bends (33) far away from the bent rod (31) is contacted with the inner wall of the molding groove, one side of the two reducing bends (33) close to each other is contacted with a baffle plate (32), and the baffle plates (32) are fixedly connected with the bent rod (31);
a right angle groove is formed in one side, away from each other, of the two rhombus plates (12), a right angle rod (13) is fixedly arranged in the right angle groove, a connecting rod (14) is fixedly connected to one side, close to each other, of the two right angle rods (13), a trapezoid plate (16) is fixedly connected to one side, close to each other, of the two rhombus plates (12), and the trapezoid plate (16) is fixedly connected with the supporting bottom plate (11);
one side of the two supporting bottom plates (11) which are close to each other is contacted with the lower end of the outer surface of the die (21);
the molding assembly (3) comprises a fixed hollow block (34), a straight rod (35) and a supporting block (36), wherein the fixed plate (24) is fixedly connected to the upper end of the die (21), the straight rod (35) is transversely arranged at the middle shaft inside the fixed hollow block (34), the supporting block (36) is fixedly connected to one end, far away from the fixed hollow block (34), of the straight rod (35), a first spring is arranged on the outer side of the straight rod (35), one end of the first spring is fixedly connected with the supporting block (36), and the other end of the first spring is fixedly connected with the inner wall of the fixed hollow block (34);
one end of the straight rod (35) far away from the fixed hollow block (34) is fixedly connected with the connecting rod (14), the diameter of the connecting rod (14) is larger than that of the straight rod (35), and one end of the straight rod (35) far away from the connecting rod (14) penetrates through the fixed hollow block (34) and is fixedly connected with the side face of the elbow rod (31);
the inner wall of the opening is tightly contacted with the outer surface of the elbow rod (31), and one side, close to each other, of the four fixed hollow blocks (34) is contacted with the left side and the right side of the elbow rod (31).
2. The steel reducing elbow hot press forming die as claimed in claim 1, wherein: a semicircular column groove is formed in the lower ends of the two dies (21), the semicircular column groove is communicated with the forming groove, a unidirectional material conveying assembly (26) is arranged in the semicircular column groove, an inserting block (25) is fixedly connected to one end, close to the right side die (21), of the left side die (21), and a socket is formed in one end, close to the left side die (21), of the right side die (21);
the shape and the size of the plug block (25) are mutually matched with the shape and the size of the socket.
3. The steel reducing elbow hot press forming die as claimed in claim 2, wherein: the unidirectional material conveying assembly (26) comprises a material conveying pipe (261), a cylindrical block (262), a fixing frame (263), a round rod (264), a squeezing plate (265) and a stress pushing plate (266), wherein the cylindrical block (262) is fixed inside the material conveying pipe (261) through the fixing frame (263), the round rod (264) is slidably connected inside the cylindrical block (262), the squeezing plate (265) is slidably connected inside the cylindrical block (262), and the stress pushing plate (266) is fixedly connected to the bottom of the round rod (264).
4. A steel reducing elbow hot press forming die as defined in claim 3, wherein: the bottom of the extrusion plate (265) is in contact with the bottom of the inner wall of the cylindrical block (262), a second spring is fixedly connected to the top of the extrusion plate (265), the second spring is sleeved on the outer surface of the round rod (264), and the top of the second spring is fixedly connected with the top of the inner wall of the cylindrical block (262).
5. The steel reducing elbow hot press forming die as defined in claim 4, wherein: the utility model discloses a conveying pipeline, including cylinder piece (262) bottom fixedly connected with cylinder sleeve pipe (267), conveying pipeline (261) top grafting has fender piece (268), just fender piece (268) bottom and round bar (264) top fixed connection, cylinder sleeve pipe (267) internal surface and round bar (264) surface contact each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202310050306.7A CN116021018B (en) | 2023-02-01 | 2023-02-01 | Steel reducing elbow hot-press forming die |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310050306.7A CN116021018B (en) | 2023-02-01 | 2023-02-01 | Steel reducing elbow hot-press forming die |
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| CN116021018A CN116021018A (en) | 2023-04-28 |
| CN116021018B true CN116021018B (en) | 2023-07-04 |
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| CN209035173U (en) * | 2018-08-30 | 2019-06-28 | 河北亚都管道装备集团有限公司 | A kind of elbow heat pressing type mold |
| CN209035210U (en) * | 2018-08-30 | 2019-06-28 | 河北亚都管道装备集团有限公司 | Push machine is used in a kind of production of elbow |
| CN109382454A (en) * | 2018-11-07 | 2019-02-26 | 盐城新岩汽车配件有限公司 | A kind of semi-automatic automobile die arrangement device |
| CN109261897A (en) * | 2018-11-20 | 2019-01-25 | 郑州新领豫智能科技有限公司 | A kind of mold Intelligent Machining device |
| CN211363331U (en) * | 2019-11-04 | 2020-08-28 | 吴顺 | Mold ejection structure |
| CN212883216U (en) * | 2020-07-02 | 2021-04-06 | 昆山睿昊丰机械有限公司 | Bonding device for die manufacturing |
| CN213944656U (en) * | 2020-08-06 | 2021-08-13 | 深圳市旭邦制造科技有限公司 | Novel elbow demoulding structure |
| CN215429743U (en) * | 2021-04-22 | 2022-01-07 | 河北亚都管道装备集团有限公司 | Elbow surface painting device |
| CN214768389U (en) * | 2021-05-06 | 2021-11-19 | 沧州沧涛管件有限公司 | Push away hot push forming device of system elbow |
| CN215999083U (en) * | 2021-09-18 | 2022-03-11 | 河北亚都管道装备集团有限公司 | Steel pipe plasma cutting machine |
| CN114161054A (en) * | 2021-11-30 | 2022-03-11 | 武汉金牛不锈钢管道科技有限公司 | Welding fixture for reducing elbow of stainless steel pipe fitting |
| CN114888991A (en) * | 2022-04-01 | 2022-08-12 | 李舒敏 | Oil-resistant silicone rubber composition and preparation method thereof |
| CN115041681A (en) * | 2022-06-16 | 2022-09-13 | 海安县鹰球粉末冶金有限公司 | Powder metallurgy high-strength copper-nickel alloy oil-retaining bearing forming equipment |
| CN115139037A (en) * | 2022-07-12 | 2022-10-04 | 蚌埠韦一新能源有限公司 | Welding equipment for petrochemical accessory production |
| CN115090766A (en) * | 2022-07-19 | 2022-09-23 | 南通恒益电子有限公司 | Mould stamping device convenient to drawing of patterns |
| CN115188546A (en) * | 2022-07-21 | 2022-10-14 | 红旗集团江西铜业有限公司 | Automatic enameled wire hot wax coating device with leveling effect |
| CN115284553A (en) * | 2022-07-28 | 2022-11-04 | 嘉兴精科科技有限公司 | High-precision foldable mobile phone rotating shaft assembly forming device and technology |
| CN115609732A (en) * | 2022-09-06 | 2023-01-17 | 中航建筑工程有限公司 | Forming die is made to PC precast floor slab |
| CN115476101A (en) * | 2022-10-20 | 2022-12-16 | 于东明 | Reducing connects fixing device for welding |
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