CN108817515A - A kind of accurate spacing cutter device of metal bellows - Google Patents

A kind of accurate spacing cutter device of metal bellows Download PDF

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Publication number
CN108817515A
CN108817515A CN201810691593.9A CN201810691593A CN108817515A CN 108817515 A CN108817515 A CN 108817515A CN 201810691593 A CN201810691593 A CN 201810691593A CN 108817515 A CN108817515 A CN 108817515A
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CN
China
Prior art keywords
metal bellows
component
cutting
rack
grip blocks
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201810691593.9A
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Chinese (zh)
Inventor
汪贤文
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
WUHU TAIHE PIPE INDUSTRY Co Ltd
Original Assignee
WUHU TAIHE PIPE INDUSTRY Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by WUHU TAIHE PIPE INDUSTRY Co Ltd filed Critical WUHU TAIHE PIPE INDUSTRY Co Ltd
Priority to CN201810691593.9A priority Critical patent/CN108817515A/en
Publication of CN108817515A publication Critical patent/CN108817515A/en
Pending legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23DPLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D21/00Machines or devices for shearing or cutting tubes
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23DPLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D33/00Accessories for shearing machines or shearing devices
    • B23D33/02Arrangements for holding, guiding, and/or feeding work during the operation

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shearing Machines (AREA)

Abstract

The invention discloses a kind of accurate spacing cutter devices of metal bellows, including rack, it is sequentially installed in the horizontal direction in rack and leads straight component, traction component, cutting component and conveying assembly, cutting component includes cutting assembly and clamp assemblies, scale component is installed, scale component is located at side of the cutting component relative to traction component on conveying assembly;The present invention realizes the accurate spacing of metal bellows by the setting of scale component, cutting efficiency is improved, the waste of metal bellows is reduced, improves the utilization rate of metal bellows, the cutting for realizing the metal bellows of different length simultaneously, increases the use scope of the present apparatus.

Description

A kind of accurate spacing cutter device of metal bellows
Technical field
The present invention relates to metal bellows processing technique field, specifically a kind of accurate spacing cutting of metal bellows Device.
Background technique
Metal bellows is a kind of tubing of external form as the wave sample of rule, common metal bellows have carbon steel and not Become rusty steel, also having steel lining plastic, aluminum etc.;It is mainly used for needing the non-concentric axial transmission of the bending radius of very little, or Person irregularly turns, flexible perhaps thermal deformation of extraction duct etc. or is not easy to do pipeline with the occasion that fixed elbow is installed The connection of connection or pipeline and equipment with pipeline uses;In the production process of actual metal bellows, for production The metal bellows of molding length is cut, and traditional cutting machine only has the function of cutting, cannot achieve spacing Cutting in practical cutting process or measures length or about cuts, and workload will be increased by measuring length, reduce cutting Efficiency, about cutting can waste a certain amount of tubing.
Summary of the invention
According to the above-mentioned deficiencies of the prior art, the technical problem to be solved by the present invention is to propose a kind of metal bellows essence It determines away from cutter device.
The present invention solves its technical problem using following technical scheme to realize:
A kind of accurate spacing cutter device of metal bellows, including rack are sequentially installed in rack in the horizontal direction and lead Straight component, traction component, cutting component and conveying assembly, cutting component include cutting assembly and clamp assemblies, on conveying assembly Scale component is installed, scale component is located at side of the cutting component relative to traction component.
Lead straight component include several levels lead through ship group and it is several lead through ship group vertically, level is led through ship group and is led vertically straight The horizontally spaced setting of wheel group, it includes two No.1 support shafts being arranged along the vertical direction that level, which leads through ship group, and two one The horizontal line of number support shaft and the conveying direction of metal bellows are perpendicular, and the end of No.1 support shaft passes through bearing and connects Mode horizontal guide wheel is installed;Vertically leading through ship group includes two horizontally disposed No. two support shafts, and two No. two Support shaft is arranged in vertical direction, and the end of No. two support shafts is equipped with vertical idler in such a way that bearing connects.
Traction component includes traction electric machine, and traction electric machine is mounted on the rack, and the output end of traction electric machine is equipped with traction Guide wheel draws and is equipped with compression cylinder above guide wheel, and compression cylinder is mounted on the rack, and its movable end is arranged downward, pressure The movable end of tight cylinder is equipped with compression guide rod, and the end for compressing guide rod is equipped with compression guide wheel in such a way that bearing connects.
Cutting assembly includes lifting cylinder, and lifting cylinder is mounted on the rack along the vertical direction, the movable end of lifting cylinder L-type connecting rod is installed, the horizontal ends of L-type connecting rod are equipped with cutting motor, and the output end of cutting motor is equipped with cutting sheet.
Clamp assemblies include left side clamping part and right side clamping part, and left side clamping part is separately mounted to cut with right side clamping part Cut the two sides of component.
Left side clamping part includes No.1 grip block and No. two grip blocks, and No.1 grip block and No. two grip blocks are installed in machine On frame, No.1 gripper cylinder being installed on No.1 grip block, the movable end of No.1 gripper cylinder is equipped with No.1 grip block, and No. two No. two gripper cylinders are installed, the movable end of No. two gripper cylinders is equipped with No. two grip blocks on grip block.
Right side clamping part includes No. three grip blocks and No. four grip blocks, and No. three grip blocks and No. four grip blocks are mounted on rack On, No. three gripper cylinders are installed on No. three grip blocks, the movable end of No. three gripper cylinders is equipped with No. three grip blocks, and No. No. four No. four gripper cylinders are installed, the movable end of No. four gripper cylinders is equipped with No. four grip blocks on grip block.
Scale component includes sliding panel, and sliding panel is mounted on the rack in the horizontal direction, by being slidably connected on sliding panel Mode sliding case is installed, slide in case and sliding motor be installed, the output end of sliding motor is equipped with driving gear, sliding The side of plate is equipped with rack gear, and driving wheel and rack is meshed, and the top for sliding case is equipped with scale cylinder along the vertical direction, fixed The movable end of ruler cylinder is equipped with fixed ruler baffle, is equipped with position coder on sliding motor.
Conveying assembly includes several conveying rollers, and conveying roller is mounted on the rack in such a way that bearing connects, conveying roller Two sides be equipped with protective baffle plate.
The beneficial effects of the invention are as follows:
The present invention realizes the accurate spacing of metal bellows by the setting of scale component, improves cutting efficiency, subtracts The waste for having lacked metal bellows, improves the utilization rate of metal bellows, while realizing the metal bellows of different length Cutting, increase the use scope of the present apparatus.
Detailed description of the invention
Content expressed by this specification attached drawing and the label in figure are briefly described below:
Fig. 1 is the structural schematic diagram of the accurate spacing cutter device of metal bellows of a specific embodiment of the invention;
Fig. 2 is the structural schematic diagram for leading straight component of a specific embodiment of the invention;
Fig. 3 is the structural schematic diagram of the traction component of a specific embodiment of the invention;
Fig. 4 is the structural schematic diagram of the cutting assembly of a specific embodiment of the invention;
Fig. 5 is the structural schematic diagram of the clamp assemblies of a specific embodiment of the invention;
Fig. 6 is the structural schematic diagram of the scale component of a specific embodiment of the invention.
Specific embodiment
Below by the description to embodiment, the shape of for example related each component of a specific embodiment of the invention, structure It makes, the mutual alignment between each section and connection relationship, the effect of each section and working principle, manufacturing process and the side of operating with Method etc., is described in further detail, completeer to help those skilled in the art to have inventive concept of the invention, technical solution Whole, accurate and deep understanding.
A kind of accurate spacing cutter device of metal bellows, including rack 1 are sequentially installed in the horizontal direction in rack 1 Straight component 2, traction component 3, cutting component and conveying assembly 4 are led, cutting component includes cutting assembly 5 and clamp assemblies 6, conveying Scale component 7 is installed, scale component 7 is located at side of the cutting component relative to traction component 3 on component 4.In use, metal Bellows 8 is delivered to traction component 3 by leading the correction of straight component 2, and traction component 3 applies tractive force to metal bellows 8, and Metal bellows 8 is delivered on conveying assembly 4, scale component 7 determines size to be cut, and metal bellows 8 is stopped On conveying assembly 4, clamp assemblies 6 clamp metal bellows 8, and cutting assembly 5 cuts metal bellows 8, The present invention realizes the accurate spacing of metal bellows 8 by the setting of scale component 7, improves cutting efficiency, reduces gold The waste for belonging to bellows 8, improves the utilization rate of metal bellows 8.
Lead straight component 2 include several levels lead through ship group and it is several lead through ship group vertically, level is led through ship group and is led vertically The horizontally spaced setting of through ship group, it includes two No.1 support shafts 21 being arranged along the vertical direction that level, which leads through ship group, and two The conveying direction of the horizontal line and metal bellows 8 of a No.1 support shaft 21 is perpendicular, and the end of No.1 support shaft 21 is logical The mode for crossing bearing connection is equipped with horizontal guide wheel 22;Vertically leading through ship group includes two horizontally disposed No. two supports Axis 23, two No. two support shafts 23 are arranged in vertical direction, and the end of No. two support shafts 23 is installed in such a way that bearing connects There is vertical idler 24.Wherein, the excircle of horizontal guide wheel 22 and vertical idler 24 is the cambered surface of middle part indent, and two levels are led Wheel 22 or two vertical idlers 24 mutually splice, and are corrected, protect to metal bellows 8 with vertical direction in the horizontal direction respectively Straightness when metal bellows 8 conveys has been demonstrate,proved, the accuracy of cut lengths is improved.
Traction component 3 includes traction electric machine 31, and traction electric machine 31 is mounted in rack 1, the output end peace of traction electric machine 31 Equipped with traction guide wheel 22, the top of traction guide wheel 22 is equipped with compression cylinder 33, and compression cylinder 33 is mounted in rack 1, and its Movable end is arranged downward, and the movable end of compression cylinder 33, which is equipped with, compresses guide rod 34, and the end for compressing guide rod 34 is connected by bearing The mode connect, which is equipped with, compresses guide wheel 35.Wherein, traction guide wheel 22 and compression guide wheel 35 are rubber material, this setting avoids Damage when traction guide wheel 22 and compression guide wheel 35 are laminated to metal bellows 8, in use, compression cylinder 33 works, pressure Tight cylinder 33 drives compression guide wheel 35 close to traction guide wheel 22, compresses guide wheel 35 and draws the metal bellows between guide wheel 22 8 are worked by certain extruding force, traction electric machine 31, and traction electric machine 31 drives traction guide wheel 22 to rotate, and traction guide wheel 22 drives Metal bellows 8 is mobile.
Cutting assembly 5 includes lifting cylinder 51, and lifting cylinder 51 is mounted on along the vertical direction in rack 1, lifting cylinder 51 Movable end L-type connecting rod 52 is installed, the horizontal ends of L-type connecting rod 52 are equipped with cutting motor 53, cutting motor 53 it is defeated Outlet is equipped with cutting sheet 54.In use, lifting cylinder 51 drives L-type connecting rod 52 to move up and down, cutting in L-type connecting rod 52 It cuts motor 53 and cutting sheet 54 moves, cutting motor 53 drives cutting sheet 54 to rotate, and cutting sheet 54 is to the metal having good positioning Bellows 8 is cut.
Clamp assemblies 6 include left side clamping part and right side clamping part, and left side clamping part is separately mounted to right side clamping part The two sides of cutting assembly 5.Wherein, left side clamping part and right side clamping part carry out metal bellows 8 in the two sides of cutting assembly 5 Clamping improves the stability of metal bellows 8 when carrying out cutting operation, ensure that cutting accuracy.
Left side clamping part includes No.1 grip block 61 and No. two grip blocks 62, and No.1 grip block 61 and No. two grip blocks 62 are equal It is mounted in rack 1, No.1 gripper cylinder 63 is installed on No.1 grip block 61, the movable end of No.1 gripper cylinder 63 is equipped with No.1 grip block 64 is equipped with No. two gripper cylinders 65 on No. two grip blocks 62, and the movable end of No. two gripper cylinders 65 is equipped with No. two grip blocks 66.In use, No.1 gripper cylinder 63 and No. two gripper cylinders 65 pass through work, No.1 gripper cylinder 63 and two Number gripper cylinder 65 drives No.1 grip block 64 and No. two grip blocks 66 close to metal bellows 8 simultaneously, realization wavy metal The fixation of pipe 8.
Right side clamping part includes No. three grip blocks 67 and No. four grip blocks 68, and No. three grip blocks 67 and No. four grip blocks 68 are pacified In rack 1, No. three gripper cylinders 69 are installed on No. three grip blocks 67, the movable end of No. three gripper cylinders 69 is equipped with three Number grip block 610 is equipped with No. four gripper cylinders 611 on No. four grip blocks 68, and the movable end of No. four gripper cylinders 611 is equipped with No. four grip blocks 612.In use, No. three gripper cylinders 69 and No. four gripper cylinders 611 are by work, No. three gripper cylinders 69 with No. four gripper cylinders 611 drive No. three grip blocks 610 and No. four grip blocks 612 close to metal bellows 8 simultaneously, realize metal The fixation of bellows 8.
Scale component 7 includes sliding panel 71, and sliding panel 71 is mounted in rack 1 in the horizontal direction, passes through on sliding panel 71 The mode being slidably connected is equipped with sliding case 72, slides and is equipped with sliding motor 73 in case 72, the output end peace of sliding motor 73 Equipped with driving gear 74, the side of sliding panel 71 is equipped with rack gear 75, and driving gear 74 is meshed with rack gear 75, slides the upper of case 72 Portion is equipped with scale cylinder 76 along the vertical direction, and the movable end of scale cylinder 76 is equipped with fixed ruler baffle 77, on sliding motor 73 Position coder 78 is installed.In use, sliding motor 73 works, sliding motor 73 drives driving gear 74 to rotate, sliding tooth Wheel 74 by be meshed with rack gear 75 drive sliding case 72 moved on sliding panel 71, position coder 78 determine sliding case 72 with The position of cutting assembly 5, after sliding case 72 is moved to designated position, sliding motor 73 stops working, and scale cylinder 76 works, fixed Ruler cylinder 76 drives fixed ruler baffle 77 to move down, and fixed ruler baffle 77 positions metal bellows 8, this setting can be realized The cutting of the metal bellows 8 of different length, easy to use, the setting of position coder 78 ensure that determining for metal bellows 8 Position precision, reduces the waste of metal bellows 8.
Conveying assembly 4 includes several conveying rollers, and conveying roller is mounted in rack 1 in such a way that bearing connects, conveys The two sides of roller are equipped with protective baffle plate.
It further include controller, controller and traction electric machine 31, compression cylinder 33, lifting cylinder 51, cutting motor 53, No.1 It is 69, No. four gripper cylinders 611 of the gripper cylinder of gripper cylinder 65, three of gripper cylinder 63, two, sliding motor 73, position encoded Device 78, scale cylinder 76 are electrically connected.
Working principle is:
Operator is corrected position coder 78 using ruler;
Metal bellows 8 is mounted on traction guide wheel 22 by the operation human world across straight component 2 is led, and compression cylinder 33 works, Compression cylinder 33 drives the wavy metal for compressing that guide wheel 35 is close to traction guide wheel 22, between compression guide wheel 35 and traction guide wheel 22 Pipe 8 is worked by certain extruding force, traction electric machine 31, and traction electric machine 31 drives traction guide wheel 22 to rotate, and draws 22 band of guide wheel Dynamic metal bellows 8 is mobile;
Into controller, input needs the size of scale, and controller controls sliding motor 73 and works, and sliding motor 73 drives Gear 74 is driven to rotate, driving gear 74 drives sliding case 72 to move on sliding panel 71 by being meshed with rack gear 75, slides After case 72 is moved to designated position, sliding motor 73 stops working, and scale cylinder 76 works, and scale cylinder 76 drives fixed ruler baffle 77 move down;
Before metal bellows 8 advances to fixed ruler baffle 77.And after being stopped by fixed ruler baffle 77, compression cylinder 33 works, pressure Tight cylinder 33, which drives, compresses guide wheel 35 far from traction guide wheel 22, the clamping gas of gripper cylinder 65, three of No.1 gripper cylinder 63, two 69, No. four gripper cylinders 611 of cylinder work at the same time, and drive the grip block 66, three of No.1 grip block 64, two grip block 610 and four Number grip block 612 grips metal bellows 8, and scale cylinder 76 drives fixed ruler baffle 77 to move up;
Lifting cylinder 51 drives L-type connecting rod 52 to move down, cutting motor 53 and cutting sheet 54 in L-type connecting rod 52 It moves, cutting motor 53 drives cutting sheet 54 to rotate, and cutting sheet 54 cuts the metal bellows 8 having good positioning;This Invention realizes the accurate spacing of metal bellows by the setting of scale component, improves cutting efficiency, reduces metal wave The waste of line pipe, improves the utilization rate of metal bellows, while realizing the cutting of the metal bellows of different length, increases The use scope of the present apparatus.
The present invention is exemplarily described above, it is clear that present invention specific implementation is not subject to the restrictions described above, As long as using the improvement for the various unsubstantialities that the inventive concept and technical scheme of the present invention carry out, or not improved this is sent out Bright conception and technical scheme directly apply to other occasions, within the scope of the present invention.Protection of the invention Range should be determined by the scope of protection defined in the claims.

Claims (9)

1. a kind of accurate spacing cutter device of metal bellows, it is characterised in that:Including rack, in the rack in the horizontal direction It is sequentially installed with and leads straight component, traction component, cutting component and conveying assembly, cutting component includes cutting assembly and clamping group Part, scale component is equipped on conveying assembly, and scale component is located at side of the cutting component relative to traction component.
2. the accurate spacing cutter device of metal bellows according to claim 1, it is characterised in that:It is described to lead straight component packet Include several levels lead through ship group and it is several lead through ship group vertically, level leads through ship group and vertical to lead through ship group horizontally spaced Setting, it includes two No.1 support shafts being arranged along the vertical direction, the horizontal line of two No.1 support shafts that level, which leads through ship group, Perpendicular with the conveying direction of metal bellows, the end of No.1 support shaft is equipped with level in such a way that bearing connects and leads Wheel;Vertically leading through ship group includes two horizontally disposed No. two support shafts, and two No. two support shafts are arranged in vertical direction The end of cloth, No. two support shafts is equipped with vertical idler in such a way that bearing connects.
3. the accurate spacing cutter device of metal bellows according to claim 1, it is characterised in that:The traction component packet Traction electric machine is included, traction electric machine is mounted on the rack, and the output end of traction electric machine is equipped with traction guide wheel, draws the top of guide wheel Compression cylinder is installed, compression cylinder is mounted on the rack, and its movable end is arranged downward, and the movable end of compression cylinder is equipped with Guide rod is compressed, the end for compressing guide rod is equipped with compression guide wheel in such a way that bearing connects.
4. the accurate spacing cutter device of metal bellows according to claim 1, it is characterised in that:The cutting assembly packet Lifting cylinder is included, lifting cylinder is mounted on the rack along the vertical direction, and the movable end of lifting cylinder is equipped with L-type connecting rod, L-type The horizontal ends of connecting rod are equipped with cutting motor, and the output end of cutting motor is equipped with cutting sheet.
5. the accurate spacing cutter device of metal bellows according to claim 1, it is characterised in that:The clamp assemblies packet Left side clamping part and right side clamping part are included, left side clamping part and right side clamping part are separately mounted to the two sides of cutting assembly.
6. the accurate spacing cutter device of metal bellows according to claim 5, it is characterised in that:The left side clamping part Including No.1 grip block and No. two grip blocks, No.1 grip block and No. two grip blocks are respectively mounted on the rack, on No.1 grip block No.1 gripper cylinder is installed, the movable end of No.1 gripper cylinder is equipped with No.1 grip block, is equipped with two on No. two grip blocks Number gripper cylinder, the movable end of No. two gripper cylinders are equipped with No. two grip blocks.
7. the accurate spacing cutter device of metal bellows according to claim 5, it is characterised in that:The right side clamping part Including No. three grip blocks and No. four grip blocks, No. three grip blocks are mounted on the rack with No. four grip blocks, are pacified on No. three grip blocks Equipped with No. three gripper cylinders, the movable end of No. three gripper cylinders is equipped with No. three grip blocks, is equipped with four on No. No. four grip blocks Number gripper cylinder, the movable end of No. four gripper cylinders are equipped with No. four grip blocks.
8. the accurate spacing cutter device of metal bellows according to claim 1, it is characterised in that:The scale component packet Sliding panel is included, sliding panel is mounted on the rack in the horizontal direction, sliding case is installed by way of being slidably connected on sliding panel, Sliding motor is installed, the output end of sliding motor is equipped with driving gear, and the side of sliding panel is equipped with rack gear, drives in sliding case Movable tooth wheel and rack is meshed, and the top for sliding case is equipped with scale cylinder, the movable end installation of scale cylinder along the vertical direction There is fixed ruler baffle, position coder is installed on sliding motor.
9. the accurate spacing cutter device of metal bellows according to claim 1, it is characterised in that:The conveying assembly packet Several conveying rollers are included, conveying roller is mounted on the rack in such a way that bearing connects, and the two sides of conveying roller are equipped with anti-guard block Plate.
CN201810691593.9A 2018-06-28 2018-06-28 A kind of accurate spacing cutter device of metal bellows Pending CN108817515A (en)

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Cited By (6)

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Publication number Priority date Publication date Assignee Title
CN109894665A (en) * 2019-04-15 2019-06-18 马鞍山市飞达波纹管制造有限公司 A kind of metal bellows cutter device and its application method
CN111408785A (en) * 2020-05-25 2020-07-14 湖州新兴汽车部件有限公司 High-precision automatic welded pipe cutting machine
CN112212608A (en) * 2019-06-28 2021-01-12 云和县宏峰模具厂 Metal corrugated pipe cooling device
CN113245612A (en) * 2021-05-14 2021-08-13 淮阴工学院 Automatic pipe cutting equipment and pipe cutting method
CN113714551A (en) * 2021-08-31 2021-11-30 绍兴钱江亚润家居用品有限公司 Compression-resistant impact-resistant high-frequency welded pipe forming device
CN117428125A (en) * 2023-12-19 2024-01-23 福州立洲弹簧有限公司 Cutting device for spring to be molded

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Publication number Priority date Publication date Assignee Title
CN109894665A (en) * 2019-04-15 2019-06-18 马鞍山市飞达波纹管制造有限公司 A kind of metal bellows cutter device and its application method
CN109894665B (en) * 2019-04-15 2023-09-29 马鞍山市飞达波纹管制造有限公司 Metal corrugated pipe cutting device and use method thereof
CN112212608A (en) * 2019-06-28 2021-01-12 云和县宏峰模具厂 Metal corrugated pipe cooling device
CN111408785A (en) * 2020-05-25 2020-07-14 湖州新兴汽车部件有限公司 High-precision automatic welded pipe cutting machine
CN113245612A (en) * 2021-05-14 2021-08-13 淮阴工学院 Automatic pipe cutting equipment and pipe cutting method
CN113245612B (en) * 2021-05-14 2022-08-16 淮阴工学院 Automatic pipe cutting equipment and pipe cutting method
CN113714551A (en) * 2021-08-31 2021-11-30 绍兴钱江亚润家居用品有限公司 Compression-resistant impact-resistant high-frequency welded pipe forming device
CN117428125A (en) * 2023-12-19 2024-01-23 福州立洲弹簧有限公司 Cutting device for spring to be molded
CN117428125B (en) * 2023-12-19 2024-03-05 福州立洲弹簧有限公司 Cutting device for spring to be molded

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Application publication date: 20181116