US3784075A - Apparatus for the stepwise feed of workpieces - Google Patents

Apparatus for the stepwise feed of workpieces Download PDF

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Publication number
US3784075A
US3784075A US00292385A US3784075DA US3784075A US 3784075 A US3784075 A US 3784075A US 00292385 A US00292385 A US 00292385A US 3784075D A US3784075D A US 3784075DA US 3784075 A US3784075 A US 3784075A
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United States
Prior art keywords
feed
lever
feed rollers
drive
control disk
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Expired - Lifetime
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US00292385A
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English (en)
Inventor
A Portmann
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Bruderer AG
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Bruderer AG
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q7/00—Arrangements for handling work specially combined with or arranged in, or specially adapted for use in connection with, machine tools, e.g. for conveying, loading, positioning, discharging, sorting
    • B23Q7/05—Arrangements for handling work specially combined with or arranged in, or specially adapted for use in connection with, machine tools, e.g. for conveying, loading, positioning, discharging, sorting by means of roller-ways
    • B23Q7/055—Arrangements for handling work specially combined with or arranged in, or specially adapted for use in connection with, machine tools, e.g. for conveying, loading, positioning, discharging, sorting by means of roller-ways some of the rollers being driven
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D43/00—Feeding, 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
    • B21D43/02—Advancing work in relation to the stroke of the die or tool
    • B21D43/04—Advancing work in relation to the stroke of the die or tool by means in mechanical engagement with the work
    • B21D43/08—Advancing work in relation to the stroke of the die or tool by means in mechanical engagement with the work by rollers
    • B21D43/09—Advancing work in relation to the stroke of the die or tool by means in mechanical engagement with the work by rollers by one or more pairs of rollers for feeding sheet or strip material

Definitions

  • the present invention relates to a new and improved apparatus for the stepwise feed or advance of workpieces.
  • clamps and roller feed devices For the stepwise feed or advance of workpieces, for instance, sheet metal into a stamping machine, presses and the like, there are primarily employed clamps and roller feed devices.
  • the known clamp feed devices in which a to-and-fro or reciprocating feed clamp entrains the workpiece during its feed movement and remains ineffectual during its return movement possess the drawbacks that the possible number of feed movements per unit of time is limited.
  • rollers for the stepwise feed of the workpieces are alternately driven and braked.
  • brakes and free wheeling devices which, however, especially when working with large operating speeds, are subjected to high mechanical load, resulting in an appreciable reduction in their longevity.
  • Another and more specific object of the present invention relates to an improved construction of apparatus for the stepwise feed of a workpiece which while preventing the previously mentioned drawbacks permits feed of the workpiece always through an exactly defined distance or amount.
  • the apparatus of the present invention is manifested by the features that there are provided two contrarotating oscillating driven feed rollers which serve to receive therebetween the workpiece. These feed rollers are respectively alternately movable at a point of time of reversal of their direction of rotation towards one another into a feed position and away from one another into an idling position. There is also provided a holding or fixing mecha nism for the workpieces which can be synchronously switched-in with the movement of the feed rollers from their feed position into the idling position and can be switched-out during movement of the rollers from their idling position into the feed position.
  • FIG. 1 is a sectional view of a first embodiment of feed mechanism designed according to the teachings of the present invention
  • FIG. 2 is a cross-sectional view of the feed mechanism depicted in FIG. 1, taken substantially along the line IIII thereof;
  • FIG. 3 is a sectional view of a second embodiment of feed mechanism designed according to the teachings of the present invention.
  • FIG. 4 is a cross-sectional view of the feed mechanism of FIG. 3, taken substantially along the line IV-IV thereof;
  • FIGS. 5 and 6 schematically illustrate a mechanism for the oscillatory drive of a shaft.
  • the feed mechanism depicted in FIGS. 1 and 2 will be understood to comprise a lower first feed roll 2 mounted in a housing 1 and a second adjustably mounted feed roll 3 which is arranged neighboring the first feed roll 2. Both of the feed rolls 2 and 3 are driven in a manner still to be described so as to oscillate and counter-rotate.
  • This second feed roll 3 is rotatably mounted at both of its ends in a rocker or balance 4 which is supported at both sides of the feed roll 3 at the housing 1 through the agency of a respective spring 5 and 6.
  • the rocker 4 is hingedly connected at its end supported at the spring 5 through the agency of a rod 7 with lever pair 8 carrying at its free end a rotatably secured roller or roll 9.
  • the lever pair 8 is pivotably connected intermediate its point of connection with the rod 7 and the roller 9 with a piston rod 11 secured to a piston 10.
  • the roller 9 cooperates with a control disk or plate 15 mounted at a drive shaft 14.
  • the drive of the drive shaft 14 is coupled with the drive of the feed rollers 2 and 3 and will be described more fully hereinafter.
  • a contact or press-on rail or edge 16 is rotatably mounted at the rocker or balance 4, this contact rail 16 is laterally connected with two arms 17 which are rotatably secured at their ends 17a at the housing.
  • the rocker 4 is provided with a recess 4a at its end supported by the spring 6.
  • a bolt 18 is intended to engage at one end with the recess 4a, this bolt engaging at its other end in a suitable recess 19a provided at an angle lever 19.
  • the angle lever 19 is rotatably mounted at the housing by means of a shaft 20. Furthermore, the angle lever 19 is connected at its other end with a piston rod 21 having a threaded portion 210 by means of which it engages with a flange 19b at angle lever 19.
  • the piston rod 21 is connected with a first piston 22. Slidably arranged upon the piston rod 21 is a second piston 23 which possesses a greater diameter than the first piston 22.
  • compartment 22a The transition from the compartment 22a, within which moves the first piston 22, to the compartment 23a for the second piston 23 is constructed as a stop 23b for the second piston 23.
  • Both compartments or chambers 22a and 23a are connected with the infeed lines or conduits 24b of a hydraulic system 24 with which also communicates the piston 10.
  • Suitable control elements 24a are installed at infeed lines 24b.
  • This lever 28 is guided in a guide 29 which is rotatably mounted at a nut 30 provided with an internal threading.
  • Nut 30 is threaded upon a spindle 31 and is secured against rotation at the housing 25. Upon rotation of this spindle 31 the nut 30 together with the guide 29 displaces, so that the point of rotation or pivot point of the lever 28 can be adjusted.
  • a bolt 32 is mounted at the free end of the lever 28, this bolt 32 carrying a sliding block 33 or the like which is guided between the legs 34a of a substantially U-shaped constructed lever 34 defining a rocker arm.
  • the lever 34 is connected with the oscillating shaft 35 to be driven.
  • the lever 28 is rotated to-and-fro with the axis of the guide 29 serving as the axis of rotation.
  • the pivotal movement of the lever 28 is transmitted to the lever 34 via the bolt 32 and the sliding block 33 sliding between the legs 34a of the lever 34, so that the shaft 35 is driven in oscillating fashion.
  • the drive shaft 14 carries a gear 36 at its end, this gear 36 meshing with a drive gear 37 driven by any suitable and therefore not particularly illustrated main drive.
  • a disk 38 is rotatably guided in the gear 36, this gear 36 however being arranged eccentricaliy.
  • the disk 38 carries at one side or face an eccentrically arranged bolt 39 which corresponds to the pin designated by reference character 27 in FIGS. 5 and 6, and at its other side or face a gear 40 arranged coaxially with respect to the disk 38.
  • the gear 40 engages with a ring 41 inserted in the housing, the ring 41 being provided with internal teeth 41a and such gear 40 during rotation of the drive shaft 14 rolls upon these internal teeth 41a.
  • the pitch circle diameter of the gear 40 and the ring 41 are in a relationship to one another of 1:2.
  • control disk 15 has been subdivided into two sections 15a and 15b, wherein the subdivision occurs by means of diametrically opposite situated points A and B. Furthermore, there will be assumed that the drive shaft 14 rotates in counterclockwise direction.
  • roller 9 at point A travels upon the section of the control disk 15, then the roller 9 will be raised by the control disk section 15a, which, in turn, brings about that the rod 7 will be moved downward and against the force of the spring 5 pushes the rocker or balance 4 downwards.
  • the rocker 4 is pivoted about the connection point of the rod 7 at the rocker 4.
  • the upper feed roller 3 is pressed against the lower stationarily mounted feed roller 2 and the contact rail 16 is raised. Both of the feed rollers 2 and 3, which rotate during this period of time in the feed direction, engage with the sheet metal 46 and displace it forwards.
  • the control disk 15 must be constructed in such a way that the feed rollers 2 and 3 are respectively pressed against or towards one another and away from one another exactly at the point of reversal of the oscillatory movement and specifically in synchronism with the respective raising and contact movement of the contact or holding rail 16.
  • the point of rotation of the lever pair 8 can be elevationally adjusted by adjusting the adjustment nut 13.
  • the feed length can be changed by altering the amplitude of the oscillatory movement of the feed rollers, that is to say, as mentioned by displacing the nut 30 along the spindle 31.
  • the balance or rocker 4 at its end secured to the rod 7 is raised by the latter by lifting or raising the piston 10.
  • the feed roll 3 is raised.
  • the rocker or balance 4 such comes to bear by means of its end supported at the spring 6 against tthe bolt 18 which engages with play in the recess 4a of the balance 4 during operation does not come into contact with the balance or rocker.
  • the balance or rocker 4 at the bolt 18 Upon contact of the balance or rocker 4 at the bolt 18 the latter is pushed downwardly against the angle lever 19. If the compartments 22a and 23a are pressurized, then the pistons 22 and 23 assume the position depicted in FIG. 2.
  • FIGS. 3 and 4 corresponds to that of FIGS. 1 and 2 with exception that the control disk 15 is not seated directly at the drive shaft 14 rather upon a hollow shaft 49 guided thereby and driven through the agency of a speed reduction drive or transmission 48. It is further to be understood that the corresponding components of FIGS. 3 and 4 have been designated with the same reference numerals as have been employed in FIGS. 1 and 2.
  • control disk 15 is not subdivided as was the case for the embodiment of FIGS. 1 and 2 into two sections 15a and 15b which each extend through the region of 180, rather the section 150, during its action upon the roller 9, as described, when there is carried out the feed of the workpiece, extends only over a region of whereas the section 1511 extends through a region of 270.
  • the switch-over or reverse control operation occurs in the manner described in conjunction with FIGS. 1 and 2 at the points A and B of the control disk 15 and at the points of reversal of the oscillatory movement of the rollers 2 and 3.
  • the drive shaft 14 rotates, as mentioned, twice, and the feed rollers 2 and 3 likewise carry out two oscillatory movements, wherein one of the movements occurs with raised upper feed roller 3.
  • An apparatus for the stepwise feed of a workpiece comprising two contrarotating oscillatingly driven feed rollers intended to receive therebetween a workpiece to be advanced, means for respectively alternately moving said feed rollers at a point of time of reversal of their direction of rotation towards one another into a feed position and away from one another into an idle position, a holding mechanism for the workpiece which can be respectively synchronously rendered effective with the movement of the feed rollers from their feed position into their idle position and ineffective during movement of the feed rollers from their idle position into their feed position, and wherein one of the feed rollers is stationarily mounted, a rocker for rotatably mounting the other feed roller, there being also provided a first spring member and a lever element, the rocker being supported at one of its ends opposite the axis of the other feed roller upon the first spring and connected with the lever element, a second spring acting opposite the first spring, the other end of the rocker cooperating with the second spring, an actuation mechanism for moving the lever element in the direction of action of the first
  • the actuation mechanism comprises a pivotably mounted lever means connected with the lever element, a driven rotating shaft, a control disk seated upon said driven rotating shaft, said lever means cooperating with the control disk so that said control disk as a function of its rotational position determines the pivotal position of said lever means.
  • the apparatus as defined in claim 2 further including a drive for the control disk, a drive for the feed rollers, the drive of the control disk being coupled with the drive of the feed rollers in such a manner that the control disk per two periods of oscillatory movement of the feed rollers carries out a complete revolution, wherein during one of said two periods the feed rollers are retained in their idle position.
  • the blocking mechanism comprises a cylinder and a piston guided in the cylinder, the piston being secured at one piston surface with a piston rod connected with the other lever arm of the angle lever and at the other piston surface there acts a pressure medium for preventing rotation of the angle lever.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Press Drives And Press Lines (AREA)
  • Delivering By Means Of Belts And Rollers (AREA)
US00292385A 1971-10-01 1972-09-26 Apparatus for the stepwise feed of workpieces Expired - Lifetime US3784075A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1436971A CH543932A (de) 1971-10-01 1971-10-01 Vorrichtung zum schrittweisen Vorschieben eines Werkstückes

Publications (1)

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US3784075A true US3784075A (en) 1974-01-08

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US00292385A Expired - Lifetime US3784075A (en) 1971-10-01 1972-09-26 Apparatus for the stepwise feed of workpieces

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US (1) US3784075A (ref)
JP (1) JPS577008B2 (ref)
CH (1) CH543932A (ref)
FR (1) FR2156670B1 (ref)
GB (1) GB1405774A (ref)
IT (1) IT965412B (ref)

Cited By (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0032453A3 (en) * 1980-01-14 1982-01-27 Vamco Machine And Tool Inc. Apparatus for intermittently feeding a workpiece to a machine
US4415108A (en) * 1980-10-30 1983-11-15 Sankyo Manufacturing Company, Ltd. Roll feed apparatus
US4430914A (en) * 1981-07-10 1984-02-14 Gloucester Engineering Co., Inc. Rotary apparatus for advancing a web
US4434924A (en) 1982-03-29 1984-03-06 Vamco Machine & Tool, Inc. Dual driven feed rolls for a punch press
US4449658A (en) * 1982-11-26 1984-05-22 Vamco Machine & Tool, Inc. Adjustable input shaft for press feed
US4487352A (en) * 1981-11-13 1984-12-11 Vamco Machine And Tool, Inc. Apparatus for adjusting the feed length of strip material to a press
US4552294A (en) * 1982-12-18 1985-11-12 R W M-Raster-Werkzeugmaschinen Gmbh Gripping feeder for strip or wire stock
US4561582A (en) * 1982-07-26 1985-12-31 F. J. Littell Machine Co. Strip feeders
US4633053A (en) * 1982-05-27 1986-12-30 Raycon Corporation Electrical discharge machine with automatically replaceable electrodes
US4792074A (en) * 1986-07-11 1988-12-20 L. Schuler Gmbh Arrangement and the stepwise advance of band material with two oppositely driven feed rollers
EP0366107A3 (en) * 1988-10-26 1990-10-31 Bruderer Ag Device controlling the feeder of a stepwise advancing feeding apparatus
US5062561A (en) * 1989-05-03 1991-11-05 Bruderer Ag Apparatus for controlling the feed of an intermittent web-feeding apparatus
US5102026A (en) * 1988-10-26 1992-04-07 Bruderer Ag Apparatus for an intermittent feeding of a webshaped workpiece
US5110026A (en) * 1989-12-11 1992-05-05 Bruderer Ag Apparatus for a stepwise advancing of a web-shaped workpiece
US5167358A (en) * 1989-07-04 1992-12-01 Otto Bihler Maschinenfabrik Gmbh & Co. Kg Material loading apparatus for material working machines
US5358164A (en) * 1988-10-26 1994-10-25 Bruderer Ag Drive apparatus for a driving of at least one oscillating shaft and an intermittent feeding apparatus including the drive apparatus
JP2675641B2 (ja) 1988-10-26 1997-11-12 ブルーデラー アーゲー 少なくとも一本の首振り運動をする主軸の駆動のための駆動装置およびこれを含む断続的送り装置
US5720421A (en) * 1994-02-28 1998-02-24 Vamco Machine & Tool, Inc. Elecronically controlled high speed press feed
US5755370A (en) * 1994-02-28 1998-05-26 Vamco Machine & Tool, Inc. Press feed with infinitely variable stock material engagement spacing
US20030075580A1 (en) * 2001-10-18 2003-04-24 Bruderer Ag Apparatus for a stepwise feeding of a strip-shaped article
US20060097939A1 (en) * 2004-11-05 2006-05-11 Bruderer Ag Apparatus for feeding a band-type semi-finished material to a press
CN107891415A (zh) * 2016-10-03 2018-04-10 株式会社捷太格特 辅助装置
CN111745124A (zh) * 2020-07-04 2020-10-09 湖北香城智能机电产业技术研究院有限公司 一种浸渍焊片的冷墩成型设备
CN116351972A (zh) * 2023-05-19 2023-06-30 苏州华源控股股份有限公司 一种冲床送料机构
CN118123069A (zh) * 2024-04-29 2024-06-04 重庆瑞玛仕家具有限公司 一种五金件的钻孔方法

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS49149324U (ref) * 1973-04-18 1974-12-24
JPS5284577A (en) * 1975-12-30 1977-07-14 Yamada Dobii Hanbai Kk Method of and device for changing position of inverted roll in cam index roll feed
EP0730920B1 (de) * 1995-03-03 2001-11-21 SIRI Pressenautomation GmbH Vorrichtung zum Zwischenlüften einer der Walzen an hochdynamischen Vorschubsystemen mit integrierter Blechdickenmessung
FR2754759B1 (fr) * 1996-10-21 1999-01-08 Dimeco Alipresse Systeme d'alimentation d'une presse, a pincage et depincage rapides asservis electroniquement
RU2158647C2 (ru) * 1998-10-08 2000-11-10 Рязанское акционерное общество открытого типа "Тяжпрессмаш" Валковая (роликовая) подача заготовок в зону обработки
DE502007001488D1 (de) 2007-01-08 2009-10-22 Bruderer Ag Vorrichtung zum intermittierenden Zuführen eines band- oder drahtförmigen Halbzeugmaterials zu einer Presse
CN111545658A (zh) * 2020-05-14 2020-08-18 衢州瑞展信息科技有限公司 一种模具冲压用自动化送料设备

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2514261A (en) * 1944-11-27 1950-07-04 J H Sternbergh Rotary intermittent feed mechanism

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2514261A (en) * 1944-11-27 1950-07-04 J H Sternbergh Rotary intermittent feed mechanism

Cited By (31)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0032453A3 (en) * 1980-01-14 1982-01-27 Vamco Machine And Tool Inc. Apparatus for intermittently feeding a workpiece to a machine
US4316569A (en) * 1980-01-14 1982-02-23 Vamco Machine And Tool, Inc. Oscillating cam feed apparatus for a press
US4415108A (en) * 1980-10-30 1983-11-15 Sankyo Manufacturing Company, Ltd. Roll feed apparatus
US4430914A (en) * 1981-07-10 1984-02-14 Gloucester Engineering Co., Inc. Rotary apparatus for advancing a web
US4487352A (en) * 1981-11-13 1984-12-11 Vamco Machine And Tool, Inc. Apparatus for adjusting the feed length of strip material to a press
US4434924A (en) 1982-03-29 1984-03-06 Vamco Machine & Tool, Inc. Dual driven feed rolls for a punch press
US4633053A (en) * 1982-05-27 1986-12-30 Raycon Corporation Electrical discharge machine with automatically replaceable electrodes
US4561582A (en) * 1982-07-26 1985-12-31 F. J. Littell Machine Co. Strip feeders
US4449658A (en) * 1982-11-26 1984-05-22 Vamco Machine & Tool, Inc. Adjustable input shaft for press feed
US4552294A (en) * 1982-12-18 1985-11-12 R W M-Raster-Werkzeugmaschinen Gmbh Gripping feeder for strip or wire stock
US4792074A (en) * 1986-07-11 1988-12-20 L. Schuler Gmbh Arrangement and the stepwise advance of band material with two oppositely driven feed rollers
US5102026A (en) * 1988-10-26 1992-04-07 Bruderer Ag Apparatus for an intermittent feeding of a webshaped workpiece
US5026336A (en) * 1988-10-26 1991-06-25 Bruderer Ag Apparatus for controlling the feed of an intermittent web feeding apparatus
EP0366107A3 (en) * 1988-10-26 1990-10-31 Bruderer Ag Device controlling the feeder of a stepwise advancing feeding apparatus
US5358164A (en) * 1988-10-26 1994-10-25 Bruderer Ag Drive apparatus for a driving of at least one oscillating shaft and an intermittent feeding apparatus including the drive apparatus
JP2675641B2 (ja) 1988-10-26 1997-11-12 ブルーデラー アーゲー 少なくとも一本の首振り運動をする主軸の駆動のための駆動装置およびこれを含む断続的送り装置
JP2768510B2 (ja) 1988-10-26 1998-06-25 ブルーデラー アーゲー 断続的ウエブ供給装置の送り制御装置
US5062561A (en) * 1989-05-03 1991-11-05 Bruderer Ag Apparatus for controlling the feed of an intermittent web-feeding apparatus
US5167358A (en) * 1989-07-04 1992-12-01 Otto Bihler Maschinenfabrik Gmbh & Co. Kg Material loading apparatus for material working machines
US5110026A (en) * 1989-12-11 1992-05-05 Bruderer Ag Apparatus for a stepwise advancing of a web-shaped workpiece
US5755370A (en) * 1994-02-28 1998-05-26 Vamco Machine & Tool, Inc. Press feed with infinitely variable stock material engagement spacing
US5720421A (en) * 1994-02-28 1998-02-24 Vamco Machine & Tool, Inc. Elecronically controlled high speed press feed
US20030075580A1 (en) * 2001-10-18 2003-04-24 Bruderer Ag Apparatus for a stepwise feeding of a strip-shaped article
US6662988B2 (en) * 2001-10-18 2003-12-16 Bruderer Ag Apparatus for a stepwise feeding of a strip-shaped article
US20060097939A1 (en) * 2004-11-05 2006-05-11 Bruderer Ag Apparatus for feeding a band-type semi-finished material to a press
US7374073B2 (en) * 2004-11-05 2008-05-20 Bruderer Ag Apparatus for feeding a band-type material to a press
CN107891415A (zh) * 2016-10-03 2018-04-10 株式会社捷太格特 辅助装置
CN111745124A (zh) * 2020-07-04 2020-10-09 湖北香城智能机电产业技术研究院有限公司 一种浸渍焊片的冷墩成型设备
CN116351972A (zh) * 2023-05-19 2023-06-30 苏州华源控股股份有限公司 一种冲床送料机构
CN116351972B (zh) * 2023-05-19 2024-05-14 苏州华源控股股份有限公司 一种冲床送料机构
CN118123069A (zh) * 2024-04-29 2024-06-04 重庆瑞玛仕家具有限公司 一种五金件的钻孔方法

Also Published As

Publication number Publication date
DE2241686A1 (de) 1973-04-05
JPS577008B2 (ref) 1982-02-08
GB1405774A (en) 1975-09-10
FR2156670A1 (ref) 1973-06-01
JPS4842476A (ref) 1973-06-20
IT965412B (it) 1974-01-31
CH543932A (de) 1973-11-15
DE2241686B2 (de) 1977-04-21
FR2156670B1 (ref) 1979-06-15

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