CN109911576A - The method and device of pipe fitting is unpowered single-piece flow - Google Patents

The method and device of pipe fitting is unpowered single-piece flow Download PDF

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Publication number
CN109911576A
CN109911576A CN201910213247.4A CN201910213247A CN109911576A CN 109911576 A CN109911576 A CN 109911576A CN 201910213247 A CN201910213247 A CN 201910213247A CN 109911576 A CN109911576 A CN 109911576A
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CN
China
Prior art keywords
pipe fitting
tilted supporter
piece flow
block
cross bar
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Pending
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CN201910213247.4A
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Chinese (zh)
Inventor
张望成
谢祎
李建飞
曹印
吴敏平
吴芝华
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HUNAN XIANGTOU GOLDSKY NEW MATERIALS CO Ltd
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HUNAN XIANGTOU GOLDSKY NEW MATERIALS CO Ltd
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Priority to CN201910213247.4A priority Critical patent/CN109911576A/en
Publication of CN109911576A publication Critical patent/CN109911576A/en
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Abstract

The invention discloses a kind of devices of unpowered single-piece flow of the pipe fitting for conveying pipe fitting one by one without kinetic force, it is characterized in that it includes tilted supporter, tilted supporter two sides are equipped with sliding rail, single-piece flow station is distributed between two sliding rails, the method of the pipe fitting is unpowered single-piece flow is without power, pipe fitting can be transported to one by one to need pipe fitting be in subsequent processing that single-piece sequentially enters, the configuration of the present invention is simple, pipe fitting is conveyed one by one without kinetic force, it is at low cost, it can guarantee that pipe fitting does not collide mutually in logistics progress, avoid the surface damage of pipe fitting, reduce noise.

Description

The method and device of pipe fitting is unpowered single-piece flow
Technical field
The present invention relates to a kind of pipe conveying device, the method and dress of specifically a kind of unpowered single-piece flow of pipe fitting It sets.
Background technique
Currently, the production technology of pipe fitting is various, the process flow of every kind of production technology is also longer, wherein often will appear two The nonsynchronous situation of procedure, when the frequency of a upper process is compared with the frequency chunks of next process, and next process needs pipe fitting When being that single-piece sequentially enters, at this moment just need to use storage rack and single-piece flow device.Present single-piece flow device is more, but mostly Number such as is carried out resistance using cylinder and pushes away by applying external force control to achieve the purpose that single-piece sequentially enters, although can be with Achieve the purpose that single-piece sequentially enters, but apparatus structure is complicated and manufacturing cost is higher, the maintenance cost and production that the later period uses It is at high cost.
Summary of the invention
The object of the present invention is to provide a kind of sides of unpowered single-piece flow of the pipe fitting for conveying pipe fitting one by one without kinetic force Method and device.
The present invention, which adopts the following technical scheme that, realizes its goal of the invention, a kind of method of the unpowered single-piece flow of pipe fitting, Including tilted supporter, tilted supporter two sides are equipped with the pipe fitting sliding rail for tumbling pipe fitting freely, have been evenly spaced on list between two sliding rails Part stream station, the single-piece flow station include the cross bar being mounted between two sliding rails, and vertical articulation has discharge bar on cross bar, Discharge bar one end is corresponding with tilted supporter discharging end and stretches out outside cross bar, and the other end is corresponding with tilted supporter feed end and is equipped with block; When pipe fitting is transported to tilted supporter feed end, the first root canal part is along the sliding rail gradient from tilted supporter feed end to tilted supporter blanking Extreme direction freely tumbles, and when rolling down to first single-piece flow station, discharge bar and tiltedly branch are pushed under the gravity of pipe fitting The corresponding one end of frame discharging end, rotates discharge bar around cross bar, and when discharge rod axis is parallel with sliding rail working face, block is higher by Sliding rail, the second root canal part are stopped by discharge bar upper stopper, so that the first root canal part is kept at a distance with the second root canal part, the second root canal Part rests on the second single-piece flow station, and when the first root canal part is rolled out from tilted supporter discharging end, block returns under the effect of gravity Initial position makes the second root canal part enter first single-piece flow station, and block allows third root canal part to rest on second again at this time Single-piece flow station continues cycling through above-mentioned movement, loops back and forth like this, and is not necessarily to power, can be transported to one by one pipe fitting and need pipe Part is in the subsequent processing that single-piece sequentially enters.
The present invention is to convey pipe fitting orderly, when adjacent two discharges rod axis is parallel with sliding rail working face, discharge bar The outer diameter that no block one end and adjacent discharge bar have the spacing between one end of block to be less than pipe fitting.
A kind of device of the unpowered single-piece flow of pipe fitting, it includes tilted supporter, and tilted supporter two sides, which are equipped with, tumbles pipe fitting freely Pipe fitting sliding rail, be evenly spaced on single-piece flow station between two sliding rails, the single-piece flow station includes that be mounted on two sliding Cross bar between rail, vertical articulation has discharge bar on cross bar, and discharge bar one end is corresponding with tilted supporter discharging end and stretches out outside cross bar, The other end is corresponding with tilted supporter feed end and is equipped with block.
Tilted supporter two sides of the present invention are equipped with the positioning plate that sliding rail is not deviated by when tumbling pipe fitting, the work of two sliding rails Making the tilt angle between face and horizontal plane is 20 °~50 °.
The present invention is when being held down discharge bar not without block one end, and discharge bar upper stopper can be lower than sliding rail working face, institute The weight that block weight is less than pipe fitting greater than the weight of discharge bar is stated,
The present invention is to prevent from scratching pipe fitting, and the block is the rounded stops made of polytetrafluoroethylene (PTFE).
A kind of method of the unpowered single-piece flow of pipe fitting, it includes tilted supporter, and tilted supporter two sides, which are equipped with, tumbles pipe fitting freely Pipe fitting sliding rail, be evenly spaced on single-piece flow station between two sliding rails, the single-piece flow station includes that be mounted on two sliding Between rail can be around the cross bar that cross bar axis rotates freely, cross bar is equipped with perpendicular discharge bar, discharge bar one end with Tilted supporter discharging end is corresponding and stretches out outside cross bar, and the other end is corresponding with tilted supporter feed end and is equipped with block;When pipe fitting is conveyed When to tilted supporter feed end, the first root canal part is freely rolled along the sliding rail gradient from tilted supporter feed end to tilted supporter blanking extreme direction It falls, when rolling down to first single-piece flow station, pushes discharge bar corresponding with tilted supporter discharging end under pipe fitting gravity One end, rotate freely cross bar around cross bar axis, thus drive discharge bar around cross bar axis rotate, when discharge rod axis and cunning When rail working face is parallel, block is higher by sliding rail, and the second root canal part is stopped by discharge bar upper stopper, makes the first root canal part and second Root canal part is kept at a distance, and the second root canal part rests on the second single-piece flow station, when the first root canal part is rolled out from tilted supporter discharging end When, block returns to initial position under the effect of gravity, and the second root canal part is made to enter first single-piece flow station, and block is again at this time It allows third root canal part to rest on the second single-piece flow station, continues cycling through above-mentioned movement, loop back and forth like this, be not necessarily to power, it can Pipe fitting is transported to to need pipe fitting be in subsequent processing that single-piece sequentially enters one by one.
The present invention is to convey pipe fitting orderly, when adjacent two discharges rod axis is parallel with sliding rail working face, discharge bar The outer diameter that no block one end and adjacent discharge bar have the spacing between one end of block to be less than pipe fitting.
A kind of device of the unpowered single-piece flow of pipe fitting, it includes tilted supporter, and tilted supporter two sides, which are equipped with, tumbles pipe fitting freely Pipe fitting sliding rail, be evenly spaced on single-piece flow station between two sliding rails, the single-piece flow station includes that be mounted on two sliding Between rail can be around the cross bar that cross bar axis rotates freely, cross bar is equipped with perpendicular discharge bar, discharge bar one end with Tilted supporter discharging end is corresponding and stretches out outside cross bar, and the other end is corresponding with tilted supporter feed end and is equipped with block.
Tilted supporter two sides of the present invention are equipped with the positioning plate that sliding rail is not deviated by when tumbling pipe fitting, the work of two sliding rails Making the tilt angle between face and horizontal plane is 20 °~50 °.
The present invention is when being held down discharge bar not without block one end, and discharge bar upper stopper can be lower than sliding rail working face, institute The weight that block weight is less than pipe fitting greater than the weight of discharge bar is stated,
The present invention is to prevent from scratching pipe fitting, and the block is the rounded stops made of polytetrafluoroethylene (PTFE).
Due to the adoption of the above technical scheme, the present invention preferably realizes goal of the invention, and structure is simple, is not necessarily to kinetic force Convey pipe fitting one by one, it is at low cost, it can guarantee that pipe fitting does not collide mutually in logistics progress, avoid the surface damage of pipe fitting, Reduce noise.
Detailed description of the invention
Fig. 1 is structural schematic diagram of the invention.
1 tilted supporter, 2 tilted supporter discharging ends, 3 sliding rails, 4 blocks, 5 positioning plates, 6 cross bars, 7 tilted supporter feed ends, 8 discharges Bar.
Specific embodiment
Below in conjunction with the accompanying drawings and embodiment the invention will be further described.
Embodiment 1:
As shown in Figure 1, the method for the unpowered single-piece flow of a kind of pipe fitting, including tilted supporter 1,1 two sides of tilted supporter, which are equipped with, makes pipe fitting certainly By the pipe fitting sliding rail 3 tumbled, single-piece flow station is evenly spaced between two sliding rails 3, the single-piece flow station includes peace Cross bar 6 between two sliding rails 3, vertical articulation has discharge bar 8 on cross bar 6, and 8 one end of discharge bar and tilted supporter discharging end 2 are right It should and stretch out outside cross bar 6, the other end is corresponding with tilted supporter feed end 7 and is equipped with block 4;When pipe fitting is transported to tilted supporter charging When holding 7, the first root canal part is freely tumbled along 3 gradient of sliding rail from tilted supporter feed end 7 to 2 direction of tilted supporter discharging end, works as rolling When falling on first single-piece flow station, discharge bar 8 corresponding with tilted supporter discharging end 2 one is pushed under the gravity of pipe fitting End rotates discharge bar 8 around cross bar 6, and when 8 axis of discharge bar is parallel with 3 working face of sliding rail, block 4 is higher by sliding rail 3, and second Root canal part is stopped by 8 upper stopper 4 of discharge bar, and the first root canal part is made to keep at a distance with the second root canal part, and the second root canal part stops In the second single-piece flow station, when the first root canal part is rolled out from tilted supporter discharging end 2, block 4 returns to initially under the effect of gravity Position makes the second root canal part enter first single-piece flow station, and block 4 allows third root canal part to rest on the second single-piece again at this time Station is flowed, above-mentioned movement is continued cycling through, loops back and forth like this, is not necessarily to power, pipe fitting can be transported to one by one and need the pipe fitting to be In the subsequent processing that single-piece sequentially enters.
The present invention is to convey pipe fitting orderly, when adjacent two discharges bar, 8 axis is parallel with 3 working face of sliding rail, discharge The outer diameter that bar 8 has the spacing between one end of block 4 to be less than pipe fitting without 4 one end of block and adjacent discharge bar 8.
A kind of device of the unpowered single-piece flow of pipe fitting, it includes tilted supporter 1, and the tilted supporter 1 includes two long columns, two Short column, the upper end of two long columns are connect with the upper end of two sliding rails 3 respectively, and the upper end of two short columns is respectively and under two sliding rails 3 End connects, and is connected by crossbeam between two short columns between two long columns, and 1 two sides of tilted supporter, which are equipped with, tumbles pipe fitting freely Pipe fitting sliding rail 3, single-piece flow station has been evenly spaced between two sliding rails 3, the single-piece flow station includes being mounted on two Cross bar 6 between sliding rail 3, vertical articulation has discharge bar 8 on cross bar 6, and 8 one end of discharge bar is corresponding with tilted supporter discharging end 2 and stretches Out outside cross bar 6, the other end is corresponding with tilted supporter feed end 7 and is equipped with block 4.The present embodiment is 9 single-piece flow stations.
1 two sides of tilted supporter of the present invention are equipped with the positioning plate 5 that sliding rail 3 is not deviated by when tumbling pipe fitting, two sliding rails 3 Working face and horizontal plane between tilt angle be 20 °~50 °.Between the working face and horizontal plane of two sliding rail 3 of the present embodiment Tilt angle be 20 °.
The present invention is when being held down discharge bar 8 not without 4 one end of block, and 8 upper stopper 4 of discharge bar can work lower than sliding rail 3 Face, the weight that 4 weight of block is greater than discharge bar 8 are less than the weight of pipe fitting,
The present invention is to prevent from scratching pipe fitting, and the block 4 is the rounded stops made of polytetrafluoroethylene (PTFE).
Embodiment 2:
A kind of method of the unpowered single-piece flow of pipe fitting, it includes tilted supporter 1, and 1 two sides of tilted supporter, which are equipped with, tumbles pipe fitting freely Pipe fitting sliding rail 3, has been evenly spaced on single-piece flow station between two sliding rails 3, and the single-piece flow station includes that be mounted on two sliding Between rail 3 perpendicular discharge bar 8, discharge bar 8 can be equipped with around the cross bar 6 that 6 axis of cross bar rotates freely, cross bar 6 One end is corresponding with tilted supporter discharging end 2 and stretches out outside cross bar 6, and the other end is corresponding with tilted supporter feed end 7 and is equipped with block 4;When When pipe fitting is transported to tilted supporter feed end 7, the first root canal part along 3 gradient of sliding rail from tilted supporter feed end 7 to tilted supporter under Material 2 direction of end freely tumble, when rolling down to first single-piece flow station, under pipe fitting gravity push discharge bar 8 and tiltedly The corresponding one end of bracket discharging end 2 rotates freely cross bar 6 around 6 axis of cross bar, to drive discharge bar 8 around 6 axis of cross bar Rotation, when 8 axis of discharge bar is parallel with 3 working face of sliding rail, block 4 is higher by sliding rail 3, and the second root canal part passes through on discharge bar 8 Block 4 stops, and the first root canal part is made to keep at a distance with the second root canal part, and the second root canal part rests on the second single-piece flow station, when When first root canal part is rolled out from tilted supporter discharging end 2, block 4 returns to initial position under the effect of gravity, make the second root canal part into Enter first single-piece flow station, block 4 allows third root canal part to rest on the second single-piece flow station again at this time, continues cycling through above-mentioned Movement, loops back and forth like this, and is not necessarily to power, and pipe fitting can be transported to one by one to need pipe fitting be next work that single-piece sequentially enters In sequence.
The present invention is to convey pipe fitting orderly, when adjacent two discharges bar, 8 axis is parallel with 3 working face of sliding rail, discharge The outer diameter that bar 8 has the spacing between one end of block 4 to be less than pipe fitting without 4 one end of block and adjacent discharge bar 8.
A kind of device of the unpowered single-piece flow of pipe fitting, it includes tilted supporter 1, and 1 two sides of tilted supporter, which are equipped with, rolls pipe fitting freely The pipe fitting sliding rail 3 fallen, single-piece flow station has been evenly spaced between two sliding rails 3, and the single-piece flow station includes being mounted on Between two sliding rails 3 perpendicular discharge bar 8, row can be equipped with around the cross bar 6 that 6 axis of cross bar rotates freely, cross bar 6 Material 8 one end of bar is corresponding with tilted supporter discharging end 2 and stretches out outside cross bar 6, and the other end is corresponding with tilted supporter feed end 7 and is equipped with block 4, the present embodiment is 11 single-piece flow stations.
1 two sides of tilted supporter of the present invention are equipped with the positioning plate 5 that sliding rail 3 is not deviated by when tumbling pipe fitting, two sliding rails 3 Working face and horizontal plane between tilt angle be 20 °~50 °.Between the working face and horizontal plane of two sliding rail 3 of the present embodiment Tilt angle be 30 °.
The present invention is when being held down discharge bar 8 not without 4 one end of block, and 8 upper stopper 4 of discharge bar can work lower than sliding rail 3 Face, the weight that 4 weight of block is greater than discharge bar 8 are less than the weight of pipe fitting,
The present invention is to prevent from scratching pipe fitting, and the block 4 is the rounded stops made of polytetrafluoroethylene (PTFE).

Claims (10)

1. a kind of method of the unpowered single-piece flow of pipe fitting, it is characterized in that it includes tilted supporter, tilted supporter two sides, which are equipped with, makes pipe fitting certainly By the pipe fitting sliding rail tumbled, single-piece flow station is evenly spaced between two sliding rails, the single-piece flow station includes installation Cross bar between two sliding rails, vertical articulation has discharge bar on cross bar, and discharge bar one end is corresponding with tilted supporter discharging end and stretches out Outside cross bar, the other end is corresponding with tilted supporter feed end and is equipped with block;When pipe fitting is transported to tilted supporter feed end, first Pipe fitting is freely tumbled along the sliding rail gradient from tilted supporter feed end to tilted supporter blanking extreme direction, when rolling down to first single-piece flow When station, discharge bar one end corresponding with tilted supporter discharging end is pushed under the gravity of pipe fitting, revolves discharge bar around cross bar Turn, when discharge rod axis is parallel with sliding rail working face, block is higher by sliding rail, and the second root canal part is hindered by discharge bar upper stopper Gear, makes the first root canal part keep at a distance with the second root canal part, the second root canal part rests on the second single-piece flow station, when the first root canal When part is rolled out from tilted supporter discharging end, block returns to initial position under the effect of gravity, and the second root canal part is made to enter first list Part stream station, block allows third root canal part to rest on the second single-piece flow station again at this time, continues cycling through above-mentioned movement, so follows Ring is reciprocal, is not necessarily to power, and pipe fitting can be transported to one by one to need pipe fitting be in subsequent processing that single-piece sequentially enters.
2. the method for the unpowered single-piece flow of pipe fitting according to claim 2, it is characterized in that when adjacent two discharges rod axis is equal When parallel with sliding rail working face, discharge bar has the spacing between one end of block to be less than pipe fitting without block one end and adjacent discharge bar Outer diameter.
3. a kind of device of the unpowered single-piece flow of pipe fitting, it is characterized in that it includes tilted supporter, tilted supporter two sides, which are equipped with, makes pipe fitting certainly By the pipe fitting sliding rail tumbled, single-piece flow station is evenly spaced between two sliding rails, the single-piece flow station includes installation Cross bar between two sliding rails, vertical articulation has discharge bar on cross bar, and discharge bar one end is corresponding with tilted supporter discharging end and stretches out Outside cross bar, the other end is corresponding with tilted supporter feed end and is equipped with block.
4. the device of the unpowered single-piece flow of pipe fitting according to claim 3, it is characterized in that the tilted supporter two sides are equipped with The positioning plate of sliding rail is not deviated by when tumbling pipe fitting, the tilt angle between the working face and horizontal plane of two sliding rails be 20 °~ 50°。
5. the device of the unpowered single-piece flow of pipe fitting according to claim 3 or 4, it is characterized in that the block weight is greater than row Expect that the weight of bar is less than the weight of pipe fitting, the block is the rounded stops made of polytetrafluoroethylene (PTFE).
6. a kind of method of the unpowered single-piece flow of pipe fitting, it is characterized in that it includes tilted supporter, tilted supporter two sides, which are equipped with, makes pipe fitting certainly By the pipe fitting sliding rail tumbled, single-piece flow station is evenly spaced between two sliding rails, the single-piece flow station includes installation Between two sliding rails perpendicular discharge bar, discharge bar can be equipped with around the cross bar that cross bar axis rotates freely, cross bar One end is corresponding with tilted supporter discharging end and stretches out outside cross bar, and the other end is corresponding with tilted supporter feed end and is equipped with block;Work as pipe fitting When being transported to tilted supporter feed end, the first root canal part is along the sliding rail gradient from tilted supporter feed end to tilted supporter blanking extreme direction It freely tumbles, when rolling down to first single-piece flow station, discharge bar and tilted supporter discharging end is pushed under pipe fitting gravity Corresponding one end rotates freely cross bar around cross bar axis, to drive discharge bar to rotate around cross bar axis, when discharge bar axis When line is parallel with sliding rail working face, block is higher by sliding rail, and the second root canal part is stopped by discharge bar upper stopper, makes the first root canal part It keeps at a distance with the second root canal part, the second root canal part rests on the second single-piece flow station, when the first root canal part is from tilted supporter blanking When end rolls out, block returns to initial position under the effect of gravity, so that the second root canal part is entered first single-piece flow station, keeps off at this time Block allows third root canal part to rest on the second single-piece flow station again, continues cycling through above-mentioned movement, loops back and forth like this, without dynamic Pipe fitting, can be transported to one by one that need pipe fitting be in subsequent processing that single-piece sequentially enters by power.
7. the method for the unpowered single-piece flow of pipe fitting according to claim 6, it is characterized in that when adjacent two discharges rod axis is equal When parallel with sliding rail working face, discharge bar has the spacing between one end of block to be less than pipe fitting without block one end and adjacent discharge bar Outer diameter.
8. a kind of device of the unpowered single-piece flow of pipe fitting, it is characterized in that it includes tilted supporter, tilted supporter two sides, which are equipped with, makes pipe fitting certainly By the pipe fitting sliding rail tumbled, single-piece flow station is evenly spaced between two sliding rails, the single-piece flow station includes installation Between two sliding rails perpendicular discharge bar, discharge bar can be equipped with around the cross bar that cross bar axis rotates freely, cross bar One end is corresponding with tilted supporter discharging end and stretches out outside cross bar, and the other end is corresponding with tilted supporter feed end and is equipped with block.
9. the device of the unpowered single-piece flow of pipe fitting according to claim 8, it is characterized in that the tilted supporter two sides are equipped with The positioning plate of sliding rail is not deviated by when tumbling pipe fitting, the tilt angle between the working face and horizontal plane of two sliding rails be 20 °~ 50°。
10. the device of pipe fitting according to claim 8 or claim 9 is unpowered single-piece flow, it is characterized in that the block weight is greater than The weight of discharge bar is less than the weight of pipe fitting, and the block is the rounded stops made of polytetrafluoroethylene (PTFE).
CN201910213247.4A 2019-03-20 2019-03-20 The method and device of pipe fitting is unpowered single-piece flow Pending CN109911576A (en)

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CN201910213247.4A CN109911576A (en) 2019-03-20 2019-03-20 The method and device of pipe fitting is unpowered single-piece flow

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Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08151121A (en) * 1994-11-29 1996-06-11 Suzuki Motor Corp Workpiece stock device
CN202575197U (en) * 2012-06-04 2012-12-05 天润曲轴股份有限公司 Conveying apparatus of step-type shaft-like workpieces
CN203439566U (en) * 2013-06-08 2014-02-19 甘肃蓝科石化高新装备股份有限公司 Damping and noise-reducing pipe fitting storage and conveying support
CN104261039A (en) * 2014-10-13 2015-01-07 珠海凌达压缩机有限公司 Passage device
CN105035617A (en) * 2015-08-15 2015-11-11 重庆洋迪机电有限公司 Anti-occlusion gear transport device
CN105173578A (en) * 2015-09-10 2015-12-23 华中科技大学 Crankshaft feeding frame
CN107720084A (en) * 2017-11-27 2018-02-23 湖北六和天轮机械有限公司 A kind of unpowered anticollision flywheel conveying device
CN109368118A (en) * 2018-11-27 2019-02-22 四川成焊宝玛焊接装备工程有限公司 A kind of gravity slide unit
CN209922342U (en) * 2019-03-20 2020-01-10 湖南湘投金天新材料有限公司 Pipe fitting unpowered single piece flow device

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08151121A (en) * 1994-11-29 1996-06-11 Suzuki Motor Corp Workpiece stock device
CN202575197U (en) * 2012-06-04 2012-12-05 天润曲轴股份有限公司 Conveying apparatus of step-type shaft-like workpieces
CN203439566U (en) * 2013-06-08 2014-02-19 甘肃蓝科石化高新装备股份有限公司 Damping and noise-reducing pipe fitting storage and conveying support
CN104261039A (en) * 2014-10-13 2015-01-07 珠海凌达压缩机有限公司 Passage device
CN105035617A (en) * 2015-08-15 2015-11-11 重庆洋迪机电有限公司 Anti-occlusion gear transport device
CN105173578A (en) * 2015-09-10 2015-12-23 华中科技大学 Crankshaft feeding frame
CN107720084A (en) * 2017-11-27 2018-02-23 湖北六和天轮机械有限公司 A kind of unpowered anticollision flywheel conveying device
CN109368118A (en) * 2018-11-27 2019-02-22 四川成焊宝玛焊接装备工程有限公司 A kind of gravity slide unit
CN209922342U (en) * 2019-03-20 2020-01-10 湖南湘投金天新材料有限公司 Pipe fitting unpowered single piece flow device

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