CN114310335A - Processing equipment and manufacturing process of expansion joint lantern ring - Google Patents

Processing equipment and manufacturing process of expansion joint lantern ring Download PDF

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Publication number
CN114310335A
CN114310335A CN202111682939.7A CN202111682939A CN114310335A CN 114310335 A CN114310335 A CN 114310335A CN 202111682939 A CN202111682939 A CN 202111682939A CN 114310335 A CN114310335 A CN 114310335A
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China
Prior art keywords
bending
wheel
expansion joint
ring
groove
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Pending
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CN202111682939.7A
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Chinese (zh)
Inventor
雷波
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Shanghai Xianying Flange Manufacturing Co ltd
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Shanghai Xianying Flange Manufacturing Co ltd
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Priority to CN202111682939.7A priority Critical patent/CN114310335A/en
Publication of CN114310335A publication Critical patent/CN114310335A/en
Pending legal-status Critical Current

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Abstract

The application discloses a processing device and a manufacturing process of an expansion joint lantern ring, which are applied to the field of processing devices, the technical scheme is that the processing device of the expansion joint lantern ring is characterized in that a cutting device for cutting a hollow pipe is arranged on one side of the cutting device, the hollow pipe bending device for bending the hollow pipe comprises a bending platform, a placing groove is arranged on the bending platform, a bending wheel is rotatably connected on the bending platform and is positioned right above the placing groove, an annular groove is arranged at the edge of one side of the bending wheel, a limiting ring is detachably connected at the annular groove of the bending wheel, the outer diameter of the limiting ring is the same as the diameter of the bending wheel, a bending annular groove extending along the circumferential direction is arranged on the peripheral side of the bending wheel, a fixing device is arranged at the bending annular groove of the bending wheel, a rotating groove for the fixing device to move through is arranged on the bending platform, a driving device is arranged at one side of the bending wheel, and a laser cutting device is arranged on one side of the bending device.

Description

Processing equipment and manufacturing process of expansion joint lantern ring
Technical Field
The application relates to the technical field of processing equipment, in particular to processing equipment and a manufacturing process of an expansion joint lantern ring.
Background
The expansion joint is a flexible element which can effectively compensate axial deformation, for example, the expansion joint welded on a fixed tube-plate heat exchanger shell has large axial flexibility and is easy to deform, can compensate the thermal expansion difference generated by the tube and the shell due to different wall temperatures, and reduces the axial load of the tube and the shell, thereby reducing the temperature difference stress of the tube, the tube plate and the shell, avoiding causing strength damage, instability damage and tube pull-out damage, having more types of expansion joints, and being most widely applied as a U-shaped expansion joint in terms of the shape of corrugations.
The expansion joint lantern ring of present production can carry out mould pressing from top to bottom to the section bar through the mould usually, forms the cross section and is semicircular arc panel, and the rethread bender is to arc panel bending end to end for the ring form, uses the welding machine to weld the junction at last.
In view of the above-mentioned related art, the inventors considered that there were drawbacks that the expansion joint collar produced by die pressing had poor flatness and the inner diameter dimension did not reach the requirement.
Disclosure of Invention
In order to guarantee the integral quality of the expansion joint lantern ring, the application provides processing equipment and a manufacturing process of the expansion joint lantern ring.
The application provides an expansion joint lantern ring adopts following technical scheme: a processing device of an expansion joint lantern ring comprises a cutting device for cutting a hollow pipe, a hollow pipe bending device for bending the hollow pipe is arranged on one side of the cutting device, the hollow tube bending device comprises a bending platform, a placing groove is arranged on the bending platform, a bending wheel is rotatably connected on the bending platform, the bending wheel is positioned right above the placing groove, an annular groove is arranged at the edge of one side of the bending wheel, the annular groove of the bending wheel is detachably connected with a limiting ring, the outer diameter of the limiting ring is the same as the diameter of the bending wheel, a bending ring groove extending along the circumferential direction is arranged on the outer circumferential side of the bending wheel, a fixing device is arranged at the bending ring groove of the bending wheel, the bending device is characterized in that a rotating groove for the fixing device to move through is formed in the bending platform, a driving device is arranged on one side of the bending wheel, and a laser cutting device is arranged on one side of the bending device.
Through above-mentioned technical scheme, place hollow tube coupling and bend into end to end's ring on the bending device, the laser cutting rifle carries out the circular motion and cuts the internal diameter side of ring, finally forms the expansion joint pipe box, guarantees the original roughness of hollow tube through the mode of cutting, guarantees the overall quality of the expansion joint lantern ring.
The application is further configured to: the driving device comprises a driving motor, the driving motor is arranged on one side of the bending wheel, and the output end of the driving motor is connected with the side wall of the bending wheel.
Through the technical scheme, the operation is simpler and more convenient through the driving motor, and the continuous operation is convenient to carry out.
The application is further configured to: the output end of the driving motor is fixedly connected with a driving gear, the side wall of the bending wheel is fixedly connected with a driven gear, the driving gear is meshed with the driven gear, and the diameter of the driving gear is smaller than that of the driven gear.
Through the technical scheme, the driving motor is more convenient to drive the bending wheel to rotate through the driving gear and the driven gear, so that the stainless steel pipe is convenient to bend.
The application is further configured to: the driving device comprises a driving oil cylinder, the driving oil cylinder is arranged on the bending platform, a piston rod of the driving oil cylinder is connected with a rack, a driving gear is fixedly connected to the side wall of the bending wheel, and the rack is meshed with the driving gear.
Through the technical scheme, the driving oil cylinder can drive the rack to move when working, the rack can drive the driving gear to rotate when moving, so that the bending wheel rotates, and the hollow pipe can be bent more stably through the driving oil cylinder.
The application is further configured to: the cross section shape of standing groove and the annular of bending all is semicircular in shape and sets up, the inner wall of standing groove and the annular of bending is provided with rubber coating.
Through above-mentioned technical scheme, prevent that the hollow tube from taking place deformation at the in-process of bending through standing groove and the annular of bending, protect the hollow tube through rubber coating.
The application is further configured to: the fixing device is a semicircular pipe clamp, and a rubber coating is arranged on the inner side wall of the semicircular pipe clamp.
Through the technical scheme, the semicircular pipe clamp clamps the starting end of the hollow pipe through the rubber coating, so that the bending wheel can bend the hollow pipe.
The application is further configured to: the bending platform is provided with a limiting wheel, the circumferential edge of the limiting wheel is provided with a limiting ring groove, the diameter of the limiting wheel is the same as that of the bending wheel, and the circumferential edge of the limiting wheel is provided with a containing groove for the fixing device to put in.
Through above-mentioned technical scheme, the spacing ring can carry on spacingly to the hollow tube of bending, makes the hollow tube of bending and the laminating of the annular of bending, guarantees the effect of bending to the hollow tube.
The application is further configured to: the laser cutting dress is including cutting the worker platform, be provided with positioning fixture on the cutting worker platform, the last support frame that is provided with of cutting worker platform, be provided with the rotation motor on the support frame, the output that rotates the motor is connected with the rotor arm, be provided with the adjustment cylinder on the rotor arm, the piston rod end-to-end connection of adjustment cylinder has the laser cutting rifle.
Through above-mentioned technical scheme, guarantee to carry out the precision of cutting through laser cutting rifle, drive laser cutting rifle through rotating the motor and carry out circular motion, guarantee the accuracy of laser cutting rifle movement track.
The application is further configured to: the positioning fixture is arranged to be a limiting frame, a connecting plate is arranged on the side wall of the limiting frame, a connecting bolt is arranged on the connecting plate, and the tail end of the connecting bolt is connected with the bending platform.
Through above-mentioned technical scheme, fix the spacing frame through the connecting plate to make the ring more stable when the cutting.
On the other hand, the application discloses a manufacturing process of an expansion joint lantern ring, which comprises the following steps:
s1: placing the hollow pipe on a cutting device, and processing the outer circumference of the expansion joint lantern ring according to the requirement to cut the hollow pipe;
s2: placing the cut hollow pipe joints on a bending device for bending, so that the hollow pipe joints are bent into end-to-end circular rings;
s3: placing the circular ring on a welding device, welding the joint, and placing the welded circular ring on a laser cutting device;
s3: the ring is fixed in a positioning fixture, the position of the laser cutting gun is adjusted through an adjusting cylinder according to the inner diameter of the expansion joint sleeve ring, and then the rotating motor is started to enable the laser cutting gun to perform circular motion, so that the inner diameter side of the ring is cut, and finally the expansion joint sleeve is formed.
Through above-mentioned technical scheme, guarantee the original roughness of hollow tube through the mode of cutting, guarantee the whole quality of expansion joint lantern ring.
To sum up, the beneficial technical effect of this application does:
1. the laser cutting gun performs circular motion to cut the inner diameter side of the circular ring, an expansion joint pipe sleeve is finally formed, the original flatness of the hollow pipe is guaranteed in a cutting mode, and the overall quality of the expansion joint sleeve ring is guaranteed;
2. the hollow pipe is prevented from deforming in the bending process through the placing groove and the bending ring groove, and the hollow pipe is protected through the rubber coating;
3. the limiting wheel can limit the bent hollow pipe, so that the bent hollow pipe is attached to the bending ring groove, and the bending effect of the hollow pipe is guaranteed.
Drawings
Fig. 1 is an overall configuration diagram of the present embodiment 1;
fig. 2 is an exploded view showing the structure of the bending apparatus in the present embodiment 1;
fig. 3 is a schematic structural view of the laser cutting apparatus of the present embodiment 1;
fig. 4 is a schematic structural view of the whole of embodiment 2.
Reference numeral, 1, a cutting platform; 2. a cutting frame; 3. cutting the air cylinder; 4. an electric cutter disc; 5. bending the platform; 6. a placement groove; 7. bending wheels; 8. a limiting ring; 9. bending the ring groove; 10. a semicircular pipe clamp; 11. a rotating groove; 12. a drive motor; 13. a driving gear; 14. a driven gear; 15. a driving oil cylinder; 16. a rack; 17. a drive gear; 18. a limiting wheel; 19. a limiting ring groove; 20. a containing groove; 21. bending the support plate; 22. a limiting support plate; 23. cutting the work table; 24. a support frame; 25. rotating the motor; 26. a rotating arm; 27. adjusting the cylinder; 28. a laser cutting gun; 29. a limiting frame; 30. a connecting plate; 31. a connecting strip; 32. an infrared projector pen.
Detailed Description
The present application is described in further detail below with reference to the attached drawings.
Example 1:
referring to fig. 1, for the processing equipment of expansion joint lantern ring that this application discloses, including cutting device, cutting device includes cutting platform 1, and cutting platform 1 goes up the vertical fixation has cutting frame 2, and fixed mounting has cutting cylinder 3 on cutting frame 2, and cutting cylinder 3's piston rod is vertical to pass cutting frame 2 downwards, and cutting cylinder 3's terminal fixedly connected with electric cutting cutter dish 4 can make electric cutting cutter dish 4 go up and down through cutting cylinder 3. The hollow pipe is placed on the cutting platform 1, the outer circumference of the expansion joint lantern ring is processed according to needs to cut the hollow pipe, and the hollow pipe is cut into hollow pipe joints.
Referring to fig. 1 and 2, a hollow tube bending device is placed on one side of the cutting device and comprises a bending platform 5, a bending support plate 21 and a limiting support plate 22 are vertically fixed on the bending platform 5, the upper end of the bending support plate 21 is rotatably connected with a bending wheel 7 through a rotating shaft, the upper end of the limiting support plate 22 is rotatably connected with a limiting wheel 18 through a rotating shaft, the diameters of the bending wheel 7 and the limiting wheel 18 are the same, and the peripheral edge of the side of the bending wheel 7 is in contact with the peripheral edge of the side of the limiting wheel 18. One side of the bending wheel 7 is provided with a driving device, the driving device comprises a driving motor 12, the driving motor 12 is fixed on the bending platform 5 on one side of the bending wheel 7, an output end of the driving motor 12 is fixedly connected with a driving gear 13, a side wall of the bending wheel 7 is fixedly connected with a driven gear 14, and the driving gear 13 is meshed with the driven gear 14. When the driving motor 12 is operated, the driving gear 13 is driven to rotate, and the driving gear 13 drives the driven gear 14 to rotate, so as to drive the bending wheel 7 to rotate. The diameter of the driving gear 13 is smaller than that of the driven gear 14, so that the driving motor 12 can drive the bending wheel 7 to rotate conveniently.
Referring to fig. 1 and 2, a placing groove 6 is formed in the bending platform 5 below the bending wheel 7, a bending ring groove 9 is formed in the circumferential edge of the bending wheel 7, and a limiting ring 8 groove is formed in the circumferential edge of the limiting wheel 18. The standing groove 6 and the ring groove 9 of bending are arranged correspondingly in the upper and lower positions, the standing groove 6 and the ring groove 9 of bending are arranged in a semicircular shape, the diameter of the cross section of the standing groove 6 and the ring groove 9 of bending is the same as the outer diameter of the hollow pipe, and the hollow pipe can be stably placed in the standing groove 6. A fixing device is arranged at a bending ring groove 9 of the bending wheel 7, the fixing device is a semicircular pipe clamp 10, and the inner diameter of the semicircular pipe clamp 10 is the same as the outer diameter of the hollow pipe. The bending platform 5 is provided with a rotating groove 11 for the semicircular movement to pass through, so that the bending wheel 7 can normally rotate. The circumference edge of spacing round 18 offers the storage tank 20 that supplies fixing device to put into, makes spacing round 18 can normally rotate along with wheel 7 of bending, and wheel 7 of bending makes a week, and spacing round 18 makes half circular pipe clamp 10 every turn a week all can enter into corresponding storage tank 20.
Referring to fig. 1 and 2, the starting end of the hollow tube in the placement groove 6 is inserted into a semicircular tube clamp 10, and the inner side of the semicircular tube clamp 10 is provided with a rubber coating, so that the semicircular tube clamp 10 clamps the starting end of the hollow tube. When the driving motor 12 drives the bending wheel 7 to rotate, the starting end of the hollow tube rotates along with the bending wheel 7 to bend. The inner walls of the placing groove 6 and the bending ring groove 9 are provided with rubber coatings, so that scratches on the surfaces of the hollow pipes in the moving process are prevented. When the bending wheel 7 bends the hollow pipe, the limiting wheel 18 can limit the bent hollow pipe to enable the bent hollow pipe to be attached to the bending ring groove 9, the bending effect on the hollow pipe is guaranteed, and after the bending wheel 7 rotates for a circle, the hollow pipe is bent to form a hollow ring.
Referring to fig. 1 and 2, an annular groove is formed in the edge of one side of the bending wheel 7, a limiting ring 8 is placed in the annular groove of the bending wheel 7, and the outer diameter of the limiting ring 8 is the same as the diameter of the bending wheel 7, so that the bending wheel 7 can normally rotate. The lateral wall fixedly connected with connecting strip 31 of spacing ring 8 wears to be equipped with the bolt on the connecting strip 31, and the end and the lateral wall of wheel 7 of bending of bolt are connected, make spacing ring 8 fix in the week side edge of wheel 7 of bending through connecting strip 31. After the hollow pipe is bent, the limiting ring 8 can be taken down by screwing down the bolt on the connecting strip 31, so that the hollow circular ring can be taken out from the bending annular groove 9. And welding the joint of the circular ring by using a welding gun, placing a laser cutting device on one side of the bending device, and placing the welded circular ring to the laser cutting device.
Referring to fig. 3, the laser cutting device includes a cutting table 23, a support frame 24 is fixedly mounted on the cutting table 23, a rotating motor 25 is fixed on the support frame 24, an output end of the rotating motor 25 is vertically arranged downwards, an output end of the rotating motor 25 is vertically connected with a rotating arm 26, a lower end of the rotating arm 26 is fixed with an adjusting cylinder 27, and a laser cutting gun 28 is fixedly connected to a piston rod end of the adjusting cylinder 27. The cutting work table 23 is provided with a positioning fixture, the positioning fixture is set to be a limiting frame 29, and the inner diameter of the limiting frame 29 is the same as the outer diameter of the hollow circular ring. An infrared projection pen 32 is fixed at the lower end of the rotating arm 26, the infrared projection pen 32 is located right below the output end of the rotating motor 25, and the infrared projection pen 32 projects a circle on the cutting table 23, so that the limiting frame 29 is positioned, and the center of the circle of the limiting frame 29 corresponds to the upper position and the lower position of the output end of the rotating motor 25. The side wall of the limit frame 29 is fixedly provided with a connecting plate 30, a connecting bolt penetrates through the connecting plate 30, and the tail end of the connecting bolt is in threaded connection with the bending platform 5, so that the limit frame 29 is fixed on the cutting work table 23. The position of the laser cutting gun 28 is adjusted by adjusting the cylinder 27 according to the inner diameter of the expansion joint collar. The ring is placed in a fixed frame and the rotary motor 25 is started to cause the laser cutting gun 28 to perform circular motion, thereby cutting the inner diameter side of the ring and finally forming the expansion joint pipe sleeve.
The implementation principle of the embodiment is as follows: the outer perimeter of processing the expansion joint lantern ring as required cuts the hollow tube, places the hollow tube coupling that the cutting is good and bends into end to end's ring on bending device, welds the junction of ring, makes laser cutting rifle 28 carry out circular motion and cuts the internal diameter side of ring, finally forms the expansion joint pipe box, guarantees the original roughness of hollow tube through the mode of cutting, guarantees the whole quality of the expansion joint lantern ring.
Example 2:
referring to fig. 4, the difference from embodiment 1 is that the driving device includes a driving cylinder 15, the driving cylinder 15 is fixed on the bending platform 5, a piston rod of the driving cylinder 15 is fixedly connected with a rack 16, a side wall of the bending wheel 7 is fixedly connected with a driving gear 17, the rack 16 is meshed with the driving gear 17, the driving cylinder 15 drives the rack 16 to move when working, and the rack 16 moves to drive the driving gear 17 to rotate, so that the bending wheel 7 rotates.
The application also discloses a manufacturing process of the expansion joint lantern ring, which comprises the following steps:
s1: placing the hollow pipe on a cutting device, and processing the outer circumference of the expansion joint lantern ring according to the requirement to cut the hollow pipe;
s2: placing the cut hollow pipe joints on a bending device for bending, so that the hollow pipe joints are bent into end-to-end circular rings;
s3: placing the circular ring on a welding device, welding the joint, and placing the welded circular ring on a laser cutting device;
s3: the ring is fixed in a positioning fixture, the position of a laser cutting gun 28 is adjusted through an adjusting air cylinder 27 according to the inner diameter of the expansion joint sleeve ring, and then a rotating motor 25 is started to enable the laser cutting gun 28 to perform circular motion, so that the inner diameter side of the ring is cut, and finally the expansion joint sleeve is formed.
The embodiments of the present invention are preferred embodiments of the present application, and the scope of protection of the present application is not limited by the embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (10)

1. The processing equipment of the expansion joint lantern ring is characterized by comprising a cutting device for cutting a hollow pipe, wherein one side of the cutting device is provided with a hollow pipe bending device for bending the hollow pipe, the hollow pipe bending device comprises a bending platform (5), a placing groove (6) is arranged on the bending platform (5), a bending wheel (7) is rotatably connected onto the bending platform (5), the bending wheel (7) is positioned right above the placing groove (6), a ring groove is formed in the edge of one side of the bending wheel (7), a limiting ring (8) is detachably connected to the ring groove of the bending wheel (7), the outer diameter of the limiting ring (8) is the same as the diameter of the bending wheel (7), a bending ring groove (9) extending along the circumferential direction is formed in the outer circumferential side of the bending wheel (7), and a fixing device is arranged at the bending ring groove (9) of the bending wheel (7), the bending device is characterized in that a rotating groove (11) for the fixing device to move through is formed in the bending platform (5), a driving device is arranged on one side of the bending wheel (7), and a laser cutting device is arranged on one side of the bending device.
2. The processing equipment of the expansion joint sleeve ring is characterized in that the driving device comprises a driving motor (12), the driving motor (12) is arranged on one side of the bending wheel (7), and the output end of the driving motor (12) is connected with the side wall of the bending wheel (7).
3. The processing equipment of the expansion joint lantern ring according to claim 2, characterized in that the output end of the driving motor (12) is fixedly connected with a driving gear (13), the side wall of the bending wheel (7) is fixedly connected with a driven gear (14), the driving gear (13) is meshed with the driven gear (14), and the diameter of the driving gear (13) is smaller than that of the driven gear (14).
4. The processing equipment of the expansion joint lantern ring according to claim 1, wherein the driving device comprises a driving oil cylinder (15), the driving oil cylinder (15) is arranged on the bending platform (5), a piston rod of the driving oil cylinder (15) is connected with a rack (16), a driving gear (17) is fixedly connected to the side wall of the bending wheel (7), and the rack (16) is meshed with the driving gear (17).
5. The processing equipment of the expansion joint lantern ring according to claim 1, characterized in that the cross-sectional shapes of the placing groove (6) and the bending ring groove (9) are semicircular, and the inner walls of the placing groove (6) and the bending ring groove (9) are provided with rubber coatings.
6. An expansion joint collar processing equipment according to claim 1, characterized in that the fixing device is provided as a semi-circular pipe clamp (10), the inner side wall of the semi-circular pipe clamp (10) being provided with a rubber coating.
7. The processing equipment of the expansion joint sleeve ring according to claim 1, wherein a limiting wheel (18) is arranged on the bending platform (5), a limiting ring (8) groove is arranged on the circumferential edge of the limiting wheel (18), the diameter of the limiting wheel (18) is the same as that of the bending wheel (7), and a containing groove (20) for placing a fixing device is arranged on the circumferential edge of the limiting wheel (18).
8. The processing equipment of the expansion joint lantern ring according to claim 1, characterized in that the laser cutting device comprises a cutting table (23), a positioning fixture is arranged on the cutting table (23), a supporting frame (24) is arranged on the cutting table (23), a rotating motor (25) is arranged on the supporting frame (24), the output end of the rotating motor (25) is connected with a rotating arm (26), an adjusting cylinder (27) is arranged on the rotating arm (26), and the tail end of a piston rod of the adjusting cylinder (27) is connected with a laser cutting gun (28).
9. The processing equipment of the expansion joint lantern ring according to claim 8, characterized in that the positioning fixture is a limiting frame (29), a connecting plate (30) is arranged on the side wall of the limiting frame (29), a connecting bolt is arranged on the connecting plate (30), and the tail end of the connecting bolt is connected with the bending platform (5).
10. A manufacturing process of an expansion joint lantern ring, which is applied to the processing equipment of the expansion joint lantern ring in any one of claims 1 to 9, and is characterized by comprising the following steps:
s1: placing the hollow pipe on a cutting device, and processing the outer circumference of the expansion joint lantern ring according to the requirement to cut the hollow pipe;
s2: placing the cut hollow pipe joints on a bending device for bending, so that the hollow pipe joints are bent into end-to-end circular rings;
s3: welding the joint of the circular rings by using a welding gun, and placing the welded circular rings at a laser cutting device;
s3: the ring is fixed in a positioning fixture, the position of a laser cutting gun (28) is adjusted through an adjusting air cylinder (27) according to the inner diameter of the expansion joint sleeve ring, and then a rotating motor (25) is started to enable the laser cutting gun (28) to perform circular motion, so that the inner diameter side of the ring is cut, and finally the expansion joint sleeve is formed.
CN202111682939.7A 2021-12-31 2021-12-31 Processing equipment and manufacturing process of expansion joint lantern ring Pending CN114310335A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202111682939.7A CN114310335A (en) 2021-12-31 2021-12-31 Processing equipment and manufacturing process of expansion joint lantern ring

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202111682939.7A CN114310335A (en) 2021-12-31 2021-12-31 Processing equipment and manufacturing process of expansion joint lantern ring

Publications (1)

Publication Number Publication Date
CN114310335A true CN114310335A (en) 2022-04-12

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Application Number Title Priority Date Filing Date
CN202111682939.7A Pending CN114310335A (en) 2021-12-31 2021-12-31 Processing equipment and manufacturing process of expansion joint lantern ring

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Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202006001511U1 (en) * 2006-02-01 2006-03-23 Yih Shen Machiner Co., Ltd., Wuri Shiang Pipe and cable bending machine has first servo-motor rotating eccentric shaft, on which cantilever arm is mounted carrying cutter, second servo-motor moving cutter and three additional servo-motors controlling movement of bending tools
US20080105732A1 (en) * 2006-10-26 2008-05-08 Kim Yong W Method of manufacturing expansion joint
CN103639669A (en) * 2013-12-16 2014-03-19 上海振华重工(集团)股份有限公司 Method for manufacturing telescopic expansion joint of steel cylinder
CN104493440A (en) * 2014-11-28 2015-04-08 安徽盛运环保(集团)股份有限公司 Manufacturing process of bellows expansion joint
CN111702420A (en) * 2020-06-28 2020-09-25 刘龙英 Metal steel pipe machining system and metal steel pipe machining process
CN212043516U (en) * 2020-04-29 2020-12-01 浙江圣雪休闲用品有限公司 Aluminum alloy square tube cutting and bending equipment
CN212216691U (en) * 2020-03-03 2020-12-25 中国建筑第二工程局有限公司 A pipeline cutting all-in-one of bending for building
CN214108387U (en) * 2020-10-22 2021-09-03 昆山笑乐多儿童用品有限公司 Unilateral bender

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202006001511U1 (en) * 2006-02-01 2006-03-23 Yih Shen Machiner Co., Ltd., Wuri Shiang Pipe and cable bending machine has first servo-motor rotating eccentric shaft, on which cantilever arm is mounted carrying cutter, second servo-motor moving cutter and three additional servo-motors controlling movement of bending tools
US20080105732A1 (en) * 2006-10-26 2008-05-08 Kim Yong W Method of manufacturing expansion joint
CN103639669A (en) * 2013-12-16 2014-03-19 上海振华重工(集团)股份有限公司 Method for manufacturing telescopic expansion joint of steel cylinder
CN104493440A (en) * 2014-11-28 2015-04-08 安徽盛运环保(集团)股份有限公司 Manufacturing process of bellows expansion joint
CN212216691U (en) * 2020-03-03 2020-12-25 中国建筑第二工程局有限公司 A pipeline cutting all-in-one of bending for building
CN212043516U (en) * 2020-04-29 2020-12-01 浙江圣雪休闲用品有限公司 Aluminum alloy square tube cutting and bending equipment
CN111702420A (en) * 2020-06-28 2020-09-25 刘龙英 Metal steel pipe machining system and metal steel pipe machining process
CN214108387U (en) * 2020-10-22 2021-09-03 昆山笑乐多儿童用品有限公司 Unilateral bender

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