US3349595A - Bending machines - Google Patents

Bending machines Download PDF

Info

Publication number
US3349595A
US3349595A US403768A US40376864A US3349595A US 3349595 A US3349595 A US 3349595A US 403768 A US403768 A US 403768A US 40376864 A US40376864 A US 40376864A US 3349595 A US3349595 A US 3349595A
Authority
US
United States
Prior art keywords
forms
machine
bracket
bending
spindle
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.)
Expired - Lifetime
Application number
US403768A
Other languages
English (en)
Inventor
Senard Pierre Joseph Robert
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.)
R SENARD ET FILS
SENARD ET FILS R
Original Assignee
SENARD ET FILS R
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 SENARD ET FILS R filed Critical SENARD ET FILS R
Application granted granted Critical
Publication of US3349595A publication Critical patent/US3349595A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • 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
    • B21D11/00—Bending not restricted to forms of material mentioned in only one of groups B21D5/00, B21D7/00, B21D9/00; Bending not provided for in groups B21D5/00 - B21D9/00; Twisting
    • B21D11/10—Bending specially adapted to produce specific articles, e.g. leaf springs
    • B21D11/12—Bending specially adapted to produce specific articles, e.g. leaf springs the articles being reinforcements for concrete

Definitions

  • the present invention relates to improvements concerning bending machines, particularly those used to bend the steel bars serving in the technique of reinforced concrete.
  • the bending of the said bars is made around forms the size of which depends on the curves to be given to the bars.
  • the said curves are extremely varied so that a bending machine should normally have several removable forms the chiefest of which are as many heavy parts, difficult to handle when they are to be placed on the machine or removed from it.
  • the purpose of the present invention is to remedy the above state of things through inexpensive means which can be easily carried out, thus rendering the applying and use of the said bending machines more adapted to practical requirements.
  • My invention mainly consists in providing the bending machine with a set of ring-shaped forms the selection of which, for the placing in a working position, is effected by means of one movable spindle at least, which can enter all the forms of the set, and with means permitting to place the non-working forms apart from the working volume of the machine.
  • My invention further consists in some other arrange.- ments hereinafter mentioned and preferably used together with the above mentioned main arrangement.
  • My invention particularly covers certain modes of application and realization of the said arrangements and also the bending machines provided with such improvements.
  • FIGURES l and 2 partially show, in elevational and plan view respectively, a bending machine, improved according to the invention, in a working position;
  • FIGURE 3 shows in elevational view, according to arrow F of FIGURE 1, the placing or withdrawal of the forms of the machine
  • FIGURE 4 shows the arrangement of the forms of the said machine when they do not work
  • FIGURES 5 and 6 show a variant of the forms, seen from under and in elevational view respectively.
  • the bending machine is constituted, as now known, by a structure in the shape of a table 1 on the level of which is placed a rotating plate 2 the shaft 3 of which protrudes above the table.
  • the plate 2 actuated by a mechanical or hydraulic device, effects, at the time of the bending, a complete or partial rotation.
  • the bar to be bent is placed on the plate 2 where it is taken between a roller 4 and the form 5 which will give it the required bending.
  • the form 5 is annular; it is fitted on the plate 2 together with forms 6, 7, the curvature radii of which are smaller so as to insure its centering through shaft 3.
  • the forms 5, 6 and 7 belong to a set of ring-shaped forms, the nonworking forms of which are placed apart from the working volume of the machine by means of a device comprising a movable bracket 8, a fork 9 and spindles 10.
  • the bracket 8 is fixed to a column 11 which can slide and turn in a guide 12 fixed to the structure of the machine.
  • a suitable mechanism not shown, for instance an hydraulic jack, permits to raise or lower the column 11 and, consequently, the bracket 8.
  • the fork 9 is fixed and can pivot at the free end of the bracket 8; its width approximately corresponds to the diameter of the largest of the forms of the set; its ends bear the spindles 10, to the number of two, inserted in holes diametrically bored into the forms.
  • all the forms of the set are thus bored so that the nonworking forms, such as 13, 14, can be held by the bracket 8, in the vertical position shown, on the side of the machine and under the table 1, consequently apart from the machine working volume.
  • the bracket 8 is elevated; the whole of the forms, maintained by the fork 9, is placed horizontally through rotating round the axis of spindles 10; then, by means of the rotation of the bracket 8 round the axis of the column 11, the fork forms are placed coaxially to the shaft 3 and the bracket 8 is lowered so as to put the forms on the plate of the machine round the form 5.
  • the spindles 10 are then radially slid so that they should be withdrawn from the form 13; the bracket 8 is raised again, the form 13 remaining on the plate 2.
  • the bracket 8 is turned and the form or forms still held by the fork 9 are placed vertically, then the bracket is brought down to its former position.
  • the spindles 10 have visible adjusting marks permitting to know which forms are released or not by such spindles.
  • the two spindles 10 which are diametrically opposite, may be simultaneously actuated by a mechanism coupling their shifting into the fork 9.
  • a bending machine comprising a set of ring-shaped forms, at least one movable spindle, the selection of said forms for being placed in a working position being effected by said spindle, said spindle being adapted to engage all of the forms of the set, means for positioning the nonworking forms apart from the working portion of the machine, a movable bracket fixed to the machine, and a fork pivoted substantially at the end of said bracket for holding the non-working forms.
  • a bending machine according to claim 1, wherein the said movable bracket turns and is raised or lowered in relation to the said machine.
  • a bending machine according to claim 2, wherein the said movable bracket is raised by means of a jack.
  • a bending machine according to claim 1, wherein the said fork bears two spindles inserted into the diametral holes of the forms.
  • a bending machine according to claim 4, wherein the shifting of the said spindles is coupled.
  • a bending machine comprising a set of ring-shaped forms, at least one movable spindle, the selection of said forms for being placed in a working position being effected by said spindle, said spindle being adapted to engage all of the forms of the set, means for positioning the non-working forms apart from the working portion of the machine, a movable bracket fixed to the machine, a fork pivoted substantially at the end of said bracket for holding the non-working forms, and a rotatably mounted plate having an upwardly protruding shaft, said plate having grooves, said forms having projections, said projections being adapted to engage said grooves.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
US403768A 1963-10-14 1964-10-14 Bending machines Expired - Lifetime US3349595A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR76007021 1963-10-14

Publications (1)

Publication Number Publication Date
US3349595A true US3349595A (en) 1967-10-31

Family

ID=8571965

Family Applications (1)

Application Number Title Priority Date Filing Date
US403768A Expired - Lifetime US3349595A (en) 1963-10-14 1964-10-14 Bending machines

Country Status (5)

Country Link
US (1) US3349595A (de)
AT (1) AT255863B (de)
CH (1) CH435936A (de)
ES (1) ES304926A1 (de)
GB (1) GB1081468A (de)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1644555A (en) * 1924-08-23 1927-10-04 Wagenbach Anton Gripping device for bending machines
US3151656A (en) * 1960-03-25 1964-10-06 Tor Isteg Steel Corp Bending machine for steel bars

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1644555A (en) * 1924-08-23 1927-10-04 Wagenbach Anton Gripping device for bending machines
US3151656A (en) * 1960-03-25 1964-10-06 Tor Isteg Steel Corp Bending machine for steel bars

Also Published As

Publication number Publication date
ES304926A1 (es) 1965-03-16
CH435936A (fr) 1967-05-15
AT255863B (de) 1967-07-25
GB1081468A (en) 1967-08-31

Similar Documents

Publication Publication Date Title
US3349595A (en) Bending machines
CN209077652U (zh) 一种房建工程用钢筋折弯装置
US1775921A (en) Key-cutting machine
US2196463A (en) Rheostat winding machine
US1499100A (en) Straightening machine
US3022811A (en) Machine for the manufacture of tube necks on headers
US2536333A (en) Perforating and marking machine
US4367992A (en) Broaching machine
US3151656A (en) Bending machine for steel bars
US2069198A (en) Apparatus for making dished heads
US2889685A (en) Machine movable and angularly displaceable on the ground
US2077277A (en) Pipe cutting or welding apparatus
CN107185998B (zh) 一种复绕机的卷取装置
US3001272A (en) Method of engraving print roller
GB495618A (en) Improvements in or relating to crossing motion pirn winding machines
RO109715B1 (ro) Procedeu si dispozitiv pentru desfasurarea bobinelor de sirma
US2977681A (en) Engraving machine
CN213079924U (zh) 一种钛合金外螺旋管加工用固定工装结构
US3040998A (en) Coil winding machine
JPS5813823A (ja) 静荷重形抗打機
CN220149778U (zh) 一种针织床套用纱线生产专用纱线定位装置
CN206343491U (zh) 方便调节的全纸桶上下箍碾槽设备
CN221517723U (zh) 一种翻转工装
CN212706258U (zh) 一种用于树脂砂轮生产的开孔装置
DE693168C (de) Vorrichtung zum Kanten oder Drehen von Profiltraegern o. dgl. bei Walzwerken