CN107377812B - Can automatic feeding's round machine of rolling up - Google Patents

Can automatic feeding's round machine of rolling up Download PDF

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Publication number
CN107377812B
CN107377812B CN201710696716.3A CN201710696716A CN107377812B CN 107377812 B CN107377812 B CN 107377812B CN 201710696716 A CN201710696716 A CN 201710696716A CN 107377812 B CN107377812 B CN 107377812B
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CN
China
Prior art keywords
vertical plate
hole
plate
riser
upper side
Prior art date
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Active
Application number
CN201710696716.3A
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Chinese (zh)
Other versions
CN107377812A (en
Inventor
候鑫华
候文涛
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.)
Bengbu Jieshun Machine Co ltd
Original Assignee
Bengbu Jieshun Machine 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.)
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Publication date
Application filed by Bengbu Jieshun Machine Co ltd filed Critical Bengbu Jieshun Machine Co ltd
Priority to CN201710696716.3A priority Critical patent/CN107377812B/en
Publication of CN107377812A publication Critical patent/CN107377812A/en
Application granted granted Critical
Publication of CN107377812B publication Critical patent/CN107377812B/en
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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D53/00Making other particular articles
    • B21D53/26Making other particular articles wheels or the like
    • B21D53/30Making other particular articles wheels or the like wheel rims
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21CMANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C51/00Measuring, gauging, indicating, counting, or marking devices specially adapted for use in the production or manipulation of material in accordance with subclasses B21B - B21F
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D21/00Combined processes according to methods covered by groups B21D1/00 - B21D19/00
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D3/00Straightening or restoring form of metal rods, metal tubes, metal profiles, or specific articles made therefrom, whether or not in combination with sheet metal parts
    • B21D3/02Straightening or restoring form of metal rods, metal tubes, metal profiles, or specific articles made therefrom, whether or not in combination with sheet metal parts by rollers
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D43/00Feeding, positioning or storing devices combined with, or arranged in, or specially adapted for use in connection with, apparatus for working or processing sheet metal, metal tubes or metal profiles; Associations therewith of cutting devices
    • B21D43/006Feeding elongated articles, such as tubes, bars, or profiles
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D45/00Ejecting or stripping-off devices arranged in machines or tools dealt with in this subclass
    • B21D45/02Ejecting devices
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D7/00Bending rods, profiles, or tubes
    • B21D7/08Bending rods, profiles, or tubes by passing between rollers or through a curved die
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/10Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Feeding And Watering For Cattle Raising And Animal Husbandry (AREA)
  • Rollers For Roller Conveyors For Transfer (AREA)

Abstract

The invention discloses a rolling machine capable of automatically feeding, which is characterized in that: including the bottom plate, the bottom plate upside corresponds and is equipped with a set of first branch and a set of second branch, first riser is connected to first branch upside, second riser is connected to second branch upside, connect between first riser and second riser and roll up the circle device, be equipped with the power device who drives and roll up the circle device in second riser one side, the discharge apparatus is connected to the second riser, still be equipped with the fixed roll between first riser and second riser, be equipped with the kidney round through-hole in first riser and second riser one side symmetry, the kidney round through-hole sets up in the below of fixed roll, at kidney round through-hole in-connection movable roll, the movable roll both ends all are equipped with gap adjustment device, be equipped with material feeding unit in movable roll one side. The invention has the advantages that: the material can enter the rolling device through the feeding equipment, then the height of the movable roller is adjusted, so that the material is subjected to the working procedures of flattening and rolling, the structure is simple, the operation is easy, the safety is high, and the rolling device is suitable for automatic production.

Description

Can automatic feeding's round machine of rolling up
Technical Field
The invention relates to the technical field of rims, in particular to a round rolling machine capable of automatically feeding.
Background
The rolling machine is a high-quality and high-benefit rolling device for rolling carbon steel, stainless steel, yellow metal section steel angles, steel, channel steel, pipes and the like into rings and flanges. The device has the advantages of unique structure, small volume, low energy consumption, high efficiency, convenient installation and use without noise, simple operation, strong bearing energy, long service life, high rolling speed, reliable product quality and the like. But modern edge rolling machine can't be according to the clearance of the more accurate adjustment flattening equipment of material thickness in the use, still handle once more after making processing, not only influenced the process speed but also increased processing procedure, and the material before the production needs manual transportation moreover, has wasted a large amount of labours still can't realize automated production.
Disclosure of Invention
The invention aims to solve the defects in the prior art, and provides a rolling machine capable of automatically feeding.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
can automatic feeding's round machine of rolling up, its characterized in that: including the bottom plate, the bottom plate upside corresponds and is equipped with a set of first branch and a set of second branch, first riser is connected in first branch upside support, second riser is connected in second branch upside support, rotate between first riser and second riser and connect the rolling device, be equipped with the power device who is used for driving the rolling device in second riser one side, second riser one side is equipped with the through-hole, sliding connection discharge apparatus in the through-hole, still be equipped with the fixed roll between first riser and second riser, be equipped with first waist round through-hole in first riser and second riser one side symmetry, first waist round through-hole sets up in the below of fixed roll, sliding connection movable roller in first waist round through-hole, the movable roller both ends all are equipped with clearance adjustment device, one side at the movable roller is equipped with loading attachment.
Preferably, the loading attachment includes two supports that correspond the setting, every support upside fixed connection crossbeam is equipped with two guide rails between two crossbeams, sliding connection is a set of transmission on two guide rails, every transmission all includes two sliders that correspond the setting, sliding connection on the guide rail is passed through fixed plate fixed connection between two sliders, fixed plate and guide rail set up perpendicularly, the fixed plate upside is equipped with the second kidney round through-hole, two pulleys of second kidney round through-hole sliding connection, all be equipped with the retaining member that is used for locking the pulley on every pulley, all be equipped with the fixed block above every slider, two corresponding fixed block symmetry settings rotate between two fixed blocks and connect the cylinder.
Preferably, the locking piece comprises a locking screw, and a hexagonal nut is arranged on the lower side of the locking screw.
Preferably, a dovetail groove is arranged on the lower side of each sliding block.
Preferably, the guide rail comprises a square body, a trapezoid table is arranged on the upper side of the square body, and the trapezoid table is mutually matched and connected with the dovetail groove.
Preferably, the discharging device comprises a push rod, the push rod is in sliding connection with the through hole of the second vertical plate, one end of the push rod is fixedly connected with a pushing plate, and the pushing plate is arranged between the first vertical plate and the second vertical plate.
Preferably, the power device comprises a motor mounting seat, the motor mounting seat is fixedly connected to the upper side of the bottom plate, a motor is arranged on the upper side of the motor mounting seat, a main shaft of the motor is connected with a driving gear through a connecting shaft, the driving gear is meshed with a corresponding gear set, and the gear set is fixed to one side of the rolling device.
Preferably, the first vertical plate comprises a rectangular plate, a square groove is formed in one corner of the rectangular plate, a groove is formed in one side of the square groove, a circular plate is connected in the groove, a group of first rotating holes are uniformly formed in one side of the circular plate, the rolling device is rotationally connected in the rotating holes, a graduated scale is further connected to one side of the rectangular plate, and the graduated scale and the first kidney-shaped through holes are correspondingly arranged.
Preferably, each gap adjusting device comprises a base, the base is fixedly connected to the upper side of the bottom plate, the upper side of the base is supported and connected with a jack, and a telescopic rod of the jack is rotationally connected with rotating shafts at two ends of the movable roller through a connecting piece.
Preferably, the connecting piece is square pole, is equipped with the second hole of rotating in square pole one side, rotates in the second hole of rotating and connects the movable roller, is equipped with the pointer in connecting piece one side, and the pointer point to the scale.
The invention has the advantages that: the material can pass through loading attachment, makes the material get into between movable roller and the fixed roller voluntarily, then the movable roller passes through the clearance adjustment and makes the material that flattens that can be better, makes better material get into the rolling device, and this equipment safety in utilization can be high, can realize automated production, reduces the labour.
Drawings
FIG. 1 is a schematic view of the basic structure of the present invention;
FIG. 2 is a basic structural schematic diagram of a feeding device;
FIG. 3 is a cross-sectional view of the track coupled to the slider;
FIG. 4 is a schematic view of a latch attachment;
FIG. 5 is a schematic diagram of a transmission;
FIG. 6 is a schematic view of the basic structure of the second riser;
FIG. 7 is a schematic view of a gap adjusting apparatus;
fig. 8 is a schematic view of the use of the discharge device.
Detailed Description
As shown in fig. 1, fig. 2, fig. 3, fig. 4 and fig. 5, a rounding machine capable of automatic feeding is characterized in that: including bottom plate 1, bottom plate 1 upside corresponds and is equipped with a set of first branch 3 and a set of second branch 14, first riser 8 is connected in the support of first branch 3 upside, first riser 8 includes rectangular plate 8.3, it is still connected scale 12.2 to be equipped with square groove 8.4 in rectangular plate 8.3's a corner, be equipped with recess 8.1 in square groove 8.4 one side, be equipped with evenly a set of first rotation hole 8.5 in recess 8.1 interconnection plectane 8.2 one side, second riser 4 is connected in the support of second branch 14 upside, it connects round device 11 to rotate between first rotation hole 8.5 and second riser 4, round device 11 is prior art, by three round roller constitution, three round roller correspond respectively and be equipped with three gear, three gear intermeshing constitutes gear set 13.
The power device 30 for driving the rolling device 11 is arranged on one side of the second vertical plate 4, the power device 30 comprises a motor mounting seat 2.1, the motor mounting seat 2.1 is fixedly connected to the upper side of the bottom plate 1, a motor 2 is arranged on the upper side of the motor mounting seat 2.1, a main shaft of the motor 2 is connected with a driving gear 2.3 through a connecting shaft 2.2, the driving gear 2.3 is meshed with a corresponding gear set 13, the gear set 13 is fixed on one side of the rolling device 11, a through hole is formed in one side of the second vertical plate 4, a discharging device 20 is connected in the through hole in a sliding mode, the discharging device 20 comprises a push rod 5, the push rod 5 is connected in the through hole of the second vertical plate 4 in a sliding mode, one end of the push rod 5 is fixedly connected with a pushing plate 6, the pushing plate 6 is in a circular arc shape on the lower side of the square plate, the circular arc is matched with the circular plate 8.2, the pushing plate 6 is arranged between the first vertical plate 8 and the second vertical plate 4, and a fixed roller 7 is further arranged between the first vertical plate 8 and the second vertical plate 4.
The first vertical plate 8 and the second vertical plate 4 are symmetrically provided with a first waisted through hole 15, the first waisted through hole 15 is correspondingly arranged with the graduated scale 12.2, the first waisted through hole 15 is arranged below the fixed roller 7, and the movable roller 12 is connected in a sliding way in the first waisted through hole 15.
The two ends of the movable roller 12 are respectively provided with a gap adjusting device 40, the gap adjusting device 40 comprises a base 16, the base 16 is fixedly connected to the upper side of the base 1, the upper side of the base 16 is supported and connected with a jack 10, a telescopic rod of the jack 10 is rotationally connected with rotating shafts at two ends of the movable roller 12 through a connecting piece 9, the connecting piece 9 is a square rod, one side of the square rod is provided with a second rotating hole, the movable roller 12 is rotationally connected in the second rotating hole, one side of the connecting piece 9 is provided with a pointer 12.1, and the tip of the pointer 12.1 points to the graduated scale 12.2.
The feeding device 50 is arranged on one side of the movable roller 12, the feeding device 50 comprises two corresponding supports 54, the upper side of each support 54 is fixedly connected with the cross beam 3, two guide rails 52 are arranged between the two cross beams 53, each guide rail 52 comprises a square body 52.1, and a trapezoid table 52.2 is arranged on the upper side of each square body 52.
A group of transmission devices 51 are connected to the two guide rails 52 in a sliding manner, each transmission device 51 comprises two sliding blocks 55 which are correspondingly arranged, a dovetail groove 55.1 is formed in the lower side of each sliding block 55, the dovetail grooves 55.1 are connected with the trapezoid tables 52.2 in a matched manner, the two sliding blocks 55 are fixedly connected through a fixing plate 51.1, the fixing plate 51.1 is perpendicular to the guide rails 52, a second waisted through hole 51.5 is formed in the upper side of the fixing plate 51.1, and two pulleys 51.4 are connected in a sliding manner in the second waisted through hole 51.5.
A locking member 57 for locking the pulleys 51.4 is provided on each pulley 51.4, said locking member 57 comprising a locking screw 57.1, and a hexagonal nut 57.2 is provided on the underside of the locking screw 57.1. A fixed block 51.2 is arranged above each sliding block 55, two corresponding fixed blocks 51.2 are symmetrically arranged, and a rotary connecting roller 51.3 is arranged between the two fixed blocks 51.2.
When the automatic material feeding device is used, materials enter one side of the fixed roller 7 and one side of the movable roller 12 through the automatic feeding device 50, at the moment, the height of the telescopic rod of the jack 10 is adjusted through the thickness of the materials, so that the movable roller 12 is adjusted up and down in the round through hole 15, the materials enter the round rolling device 11 after being rolled by the fixed roller 7 and the movable roller 12, a main shaft of the motor 2 is connected with the driving gear 2.3 through the connecting shaft 2.2, the driving gear 2.3 is meshed with the corresponding gear set 13, so that the round rolling device 11 is driven to operate, the round rolling device 11 rolls the materials, and then the push rod 5 pushes the pushing plate 6, so that the materials are taken out from the round rolling device 11, and automatic production can be better realized.

Claims (8)

1. Can automatic feeding's round machine of rolling up, its characterized in that: the automatic material rolling device comprises a bottom plate (1), a group of first supporting rods (3) and a group of second supporting rods (14) are correspondingly arranged on the upper side of the bottom plate (1), a first vertical plate (8) is connected to the upper side of the first supporting rods (3), a second vertical plate (4) is connected to the upper side of the second supporting rods (14) in a supporting mode, a rolling device (11) is rotatably connected between the first vertical plate (8) and the second vertical plate (4), a power device (30) used for driving the rolling device (11) is arranged on one side of the second vertical plate (4), a through hole is formed in one side of the second vertical plate (4), a discharging device (20) is connected in the through hole in a sliding mode, a fixed roller (7) is further arranged between the first vertical plate (8) and the second vertical plate (4), a first waist round through hole (15) is symmetrically formed in one side of the first vertical plate (8) and the second vertical plate (4), a movable roller (12) is connected in a sliding mode between the first waist round through hole (15), and two ends of the movable roller (12) are respectively provided with an adjusting device (40) and a material feeding device (50) is arranged on one side of the movable roller;
the feeding device (50) comprises two corresponding supports (54), each support (54) is fixedly connected with a cross beam (3), two guide rails (52) are arranged between the two cross beams (53), a group of transmission devices (51) are connected on the two guide rails (52) in a sliding mode, each transmission device (51) comprises two corresponding sliding blocks (55), the sliding blocks (55) are connected on the guide rails (52) in a sliding mode, the two sliding blocks (55) are fixedly connected through fixing plates (51.1), the fixing plates (51.1) are perpendicular to the guide rails (52), a second waist round through hole (51.5) is formed in the upper side of the fixing plates (51.1), two pulleys (51.4) are connected in a sliding mode, locking pieces (57) used for locking the pulleys (51.4) are arranged on the corresponding sliding blocks (51.4), the two corresponding fixing blocks (51.2) are arranged above the sliding blocks (55), and the two corresponding fixing blocks (51.2) are symmetrically arranged and fixedly connected between the two pulleys (51.2) in a sliding mode;
the discharging device (20) comprises a push rod (5), the push rod (5) is in sliding connection with the through hole of the second vertical plate (4), one end of the push rod (5) is fixedly connected with a pushing plate (6), and the pushing plate (6) is arranged between the first vertical plate (8) and the second vertical plate (4).
2. The automatic feeding rounding machine according to claim 1, wherein: the locking piece (57) comprises a locking screw rod (57.1), and a hexagonal nut (57.2) is arranged on the lower side of the locking screw rod (57.1).
3. The automatic feeding rounding machine according to claim 1, wherein: and a dovetail groove (55.1) is formed in the lower side of each sliding block (55).
4. A rounding machine capable of automatic feeding according to claim 3, characterized in that: the guide rail (52) comprises a square body (52.1), a trapezoid table (52.2) is arranged on the upper side of the square body (52), and the trapezoid table (52.2) is mutually matched and connected with the dovetail groove (55.1).
5. The automatic feeding rounding machine according to claim 1, wherein: the power device (30) comprises a motor mounting seat (2.1), the motor mounting seat (2.1) is fixedly connected to the upper side of the bottom plate (1), a motor (2) is arranged on the upper side of the motor mounting seat (2.1), a main shaft of the motor (2) is connected with a driving gear (2.3) through a connecting shaft (2.2), the driving gear (2.3) is meshed with a corresponding gear set (13), and the gear set (13) is fixed on one side of the rolling device (11).
6. The automatic feeding rounding machine according to claim 1, wherein: the first vertical plate (8) comprises a rectangular plate (8.3), a square groove (8.4) is formed in one corner of the rectangular plate (8.3), a groove (8.1) is formed in one side of the square groove (8.4), a circular plate (8.2) is connected in the groove (8.1), a group of first rotating holes (8.5) are uniformly formed in one side of the circular plate (8.2), the rolling device (11) is connected in the rotating holes (8.5) in a rotating mode, a graduated scale (12.2) is further connected to one side of the rectangular plate (8.3), and the graduated scale (12.2) is arranged corresponding to the first kidney-round through hole (15).
7. The automatic feeding rounding machine according to claim 6, wherein: each gap adjusting device (40) comprises a base (16), the base (16) is fixedly connected to the upper side of the bottom plate (1), the upper side of the base (16) is supported and connected with a jack (10), and a telescopic rod of the jack (10) is rotationally connected with rotating shafts at two ends of the movable roller (12) through a connecting piece (9).
8. The automatic feeding rounding machine according to claim 7, wherein: the connecting piece (9) is a square rod, a second rotating hole is formed in one side of the square rod, the movable roller (12) is rotationally connected in the second rotating hole, a pointer (12.1) is arranged on one side of the connecting piece (9), and the tip of the pointer (12.1) points to the graduated scale (12.2).
CN201710696716.3A 2017-08-15 2017-08-15 Can automatic feeding's round machine of rolling up Active CN107377812B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710696716.3A CN107377812B (en) 2017-08-15 2017-08-15 Can automatic feeding's round machine of rolling up

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Application Number Priority Date Filing Date Title
CN201710696716.3A CN107377812B (en) 2017-08-15 2017-08-15 Can automatic feeding's round machine of rolling up

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CN107377812A CN107377812A (en) 2017-11-24
CN107377812B true CN107377812B (en) 2023-07-28

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Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107855909B (en) * 2017-11-28 2024-03-26 浙江亚磊型钢冷拔有限公司 Guide rail type steel cutting device
CN110496880B (en) * 2019-07-04 2020-09-22 新昌县姝达电力科技有限公司 Full-automatic rounding machine with low-cost operation based on semiconductor
CN111633074B (en) * 2020-06-09 2021-11-12 滁州明诺机械有限公司 Feeding assembly of edge rolling machine

Citations (4)

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Publication number Priority date Publication date Assignee Title
EP1716939A1 (en) * 2005-12-08 2006-11-02 Elite Machine and Design Ltd. Metal sheet-feeder for punch
CN203875156U (en) * 2014-05-26 2014-10-15 溧阳市德力信通用设备有限公司 Small coiling machine
CN105363841A (en) * 2015-12-04 2016-03-02 苏州明远冲压件厂 Electric returned material rolling device
CN207138723U (en) * 2017-08-15 2018-03-27 蚌埠捷顺机器有限公司 A kind of furling plate round machine for being capable of automatic charging

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1716939A1 (en) * 2005-12-08 2006-11-02 Elite Machine and Design Ltd. Metal sheet-feeder for punch
CN203875156U (en) * 2014-05-26 2014-10-15 溧阳市德力信通用设备有限公司 Small coiling machine
CN105363841A (en) * 2015-12-04 2016-03-02 苏州明远冲压件厂 Electric returned material rolling device
CN207138723U (en) * 2017-08-15 2018-03-27 蚌埠捷顺机器有限公司 A kind of furling plate round machine for being capable of automatic charging

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Title
许云龙,叶团结.铰链式摆动辊型钢卷圆机.风机技术.1997,(第01期),全文. *

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