EP3132866B1 - Apparatus for forming automative wheel rim blanks - Google Patents

Apparatus for forming automative wheel rim blanks Download PDF

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Publication number
EP3132866B1
EP3132866B1 EP15461554.6A EP15461554A EP3132866B1 EP 3132866 B1 EP3132866 B1 EP 3132866B1 EP 15461554 A EP15461554 A EP 15461554A EP 3132866 B1 EP3132866 B1 EP 3132866B1
Authority
EP
European Patent Office
Prior art keywords
blank
introducing
coiled
jaws
roller
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.)
Active
Application number
EP15461554.6A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP3132866A1 (en
Inventor
Rafal SZADURA
Artur NADOLNY
Gabriele Perris Magnetto
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.)
Mw Lublin Sp Z OO
Original Assignee
Mw Lublin Sp Z OO
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 Mw Lublin Sp Z OO filed Critical Mw Lublin Sp Z OO
Priority to EP15461554.6A priority Critical patent/EP3132866B1/en
Priority to PL15461554T priority patent/PL3132866T3/pl
Priority to ES15461554.6T priority patent/ES2686278T3/es
Publication of EP3132866A1 publication Critical patent/EP3132866A1/en
Application granted granted Critical
Publication of EP3132866B1 publication Critical patent/EP3132866B1/en
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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
    • B21D53/00—Making other particular articles
    • B21D53/26—Making other particular articles wheels or the like
    • B21D53/30—Making other particular articles wheels or the like wheel rims
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C37/00—Manufacture of metal sheets, rods, wire, tubes, profiles or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • B21C37/06—Manufacture of metal sheets, rods, wire, tubes, profiles or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
    • B21C37/08—Making tubes with welded or soldered seams
    • B21C37/0822—Guiding or aligning the edges of the bent sheet
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C37/00—Manufacture of metal sheets, rods, wire, tubes, profiles or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • B21C37/06—Manufacture of metal sheets, rods, wire, tubes, profiles or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
    • B21C37/08—Making tubes with welded or soldered seams
    • B21C37/0826—Preparing the edges of the metal sheet with the aim of having some effect on the weld

Definitions

  • the present invention relates generally to an apparatus for forming cylindrical wheel rim blanks from blanks of strip material according to the preamble of claim 1 (see for example EP-A-0 164 802 ).
  • forming includes the coiling of the initial blanks and the conditioning of the longitudinal edges of the coiled blanks in preparation for the welding thereof to form a closed cylinder.
  • the quality of welding is dependent on the quality of preparation of the blanks; in particular, it is dependent on the quality of cutting and coiling of the blanks, as well as on the geometry and uniformity of the gap between longitudinal edges of the coiled blank. Furthermore, care is to be taken to prevent the cut edges from being damaged during the forming process. With all the more reason, this applies to high-strength steels that are inherently difficult to weld.
  • One object of the present invention is to provide a forming apparatus that allows for a better preparation of the rim blanks, and consequently facilitates the welding thereof to form a closed cylinder.
  • an apparatus for forming wheel rim blanks comprising:
  • the clamping movement and the aligning movement are configured as separate movements. This allows for adjusting the parallelism between the longitudinal edge portions of the coiled blank and, as a consequence, better welding joints can be obtained.
  • the flat blanks that are fed into the apparatus are pre-cut to exactly the size required to form rim blanks having a preselected diameter and axial length.
  • the flat blanks are fed into the apparatus along a feed table 12 leading into the coiling station A where the flat blank is coiled to form a cylindrical blank.
  • the coiling station A is shown in more detail in Figs. 2-5 .
  • Figs. 2 and 3 show that the coiling station A comprises a pair of upper and lower introducing rollers 13, 14 which are overlapped to each other.
  • the two rollers 13, 14 are all driven in the direction indicated by the arrows in Fig. 3 .
  • the upper roller 13 is journaled to a fixed frame of the coiling station A.
  • the lower roller 14 is journaled to a vertically adjustable fork support 15, which is driven by a fluidic actuator 16, such as for example a pneumatic cylinder.
  • the introducing rollers 13, 14 are configured for catching a flat blank 20 of strip material and introducing it into the coiling station A.
  • the fluidic actuator 16 associated to the lower introducing roller 14 is configured to urge the lower introducing roller 14 against the upper introducing roller 13 to catch the blank 20 of strip material between the introducing rollers 13, 14 when an intermediate portion 20a of the blank 20 is passing between them.
  • the fluidic actuator 16 is configured to take the lower introducing roller 14 away from the upper introducing roller 13 to release the catch on the blank 20 of strip material when a front edge portion 20b or a rear edge portion 20c of the blank 20 is passing between the introducing rollers 13, 14. In this way, a reduced pressure is exerted by the introducing rollers 13, 14 on the flat blank 20 when the front edge portion 20b or rear edge portion 20b thereof is passing between them. This can prevent the cut edges 20a, 20b from being hurt by a too high pressure exerted by the introducing rollers 13, 14.
  • Figs. 4 and 5 show that the coiling station A further comprises a triangular coiling arrangement including a top roller 31 and a pair of bottom rollers 32, 33.
  • the three rollers 31-33 are all driven in the direction indicated by the arrows in Fig. 4 .
  • the two bottom rollers 32, 33 press the incoming blank upwardly against the top roller 31 with the upper surface of the second bottom roller 33 extending over the level of the lower introducing roller 14 so that it bends or coils the metal blank upwardly around the top roller 31.
  • the radius of curvature of the coiled blank formed at the coiling station is controlled by the vertical position of the bottom rollers 32, 33.
  • a respective adjusting device 32a, 32b; 33a, 33b is associated to each of opposite ends of the bottom rollers 32, 33.
  • Each adjusting device 32a, 32b; 33a, 33b comprises a vertically movable rod 34a, 34b; 35a, 35b which is translationally integral with the respective end of the respective bottom roller 32, 33, and a rotatable control member 36a, 36b; 37a, 37b for adjusting vertical position of the rod 34a, 34b; 35a, 35b.
  • connection between the control members 36a, 36b; 37a, 37b of the adjusting devices 32a, 32b; 33a, 33b associated to the opposite ends of the bottom roller 32, 33 are connected to be rotationally integral with each other.
  • Fig. 5 shows that connection between the control members 36a, 36b; 37a, 37b of opposite adjusting devices 32a, 32b; 33a, 33b can be obtained by means of connection members 36, 37, such as for example flanged shafts.
  • connection members 36, 37 such as for example flanged shafts.
  • the mechanical link between opposite control members prevents the respective adjustment devices from becoming misaligned during adjustment operation. Therefore, the operator can adjust the level only of the bottom rollers. As a consequence, the coiling rollers stay parallel and the quality of coiling is stable.
  • the flattening press B is located adjacent the coiling station A so that the coiled blanks can be transferred directly from the coiling station to the press in the direction of the axis of the coiled blanks.
  • the purpose of the flattening press is to make the longitudinal edge portions of the coiled blank symmetrical and bring them into precise alignment with each other to ensure the production of a good weld seam.
  • An inherent result of the coiling operation is the production of asymmetrical longitudinal edge portions, i.e., a slight bend or kink is formed near the front edge of the blank, and the rear edge has an increasing radius of curvature.
  • the flattening press removes these irregularities and produces perfectly symmetrical longitudinal edge portions so as to facilitate the subsequent welding thereof.
  • the flattening press B conventionally comprises opposite dies 41, 42 which are driven against each other to flatten longitudinal edge portions 20b', 20c' on the coiled blank 20'.
  • the prime symbols (') indicate that the flat blank 20 has been converted into the cylindrical coiled blank 20' after the coiling process.
  • the flattening press includes a gripper 50 for clamping the coiled blank 20' during the flattening process.
  • the gripper 50 comprises two pair of jaws 51, 52; 53, 54.
  • Each pair of jaws 51, 52; 53, 54 is adapted to engage opposite side edges 20b1, 20b2; 20c1, 20c2 of the coiled blank 20' near to a respective longitudinal edge portion 20b', 20c' of the coiled blank 20'.
  • Each pair of jaws 51, 52; 53, 54 is carried by a respective clamp assembly 61, 63.
  • the gripper 50 comprises a clamping drive for moving the jaws 51, 52; 53, 54 of the respective clamp assembly 61, 63 toward each other to clamp the respective longitudinal edge portion 20b', 20c' of the coiled blank 20'.
  • the movement directions of the jaws 51, 52; 53, 54 are indicated by the arrows C in Fig. 7 .
  • the clamping drive can comprise a respective fluidic deformable actuator 61a, 63a installed on each clamp assembly 61, 63, wherein the deformable actuator includes a hollow deformable cylinder which increases in diameter and contracts in length when filled with fluid.
  • a deformable actuator can be for example the so-called "Fluidic muscle" produced by Festo AG & CO KG.
  • the gripper 50 further comprises an aligning drive for moving the clamp assemblies 61, 63 in longitudinal direction to align the longitudinal edge portions 20b', 20c' of the coiled blank 20' to each other.
  • each clamp assembly 61, 63 is mounted for translation on a respective support arm 65, 67 of a support frame of the gripper 50.
  • the movement directions of the clamp assemblies 61, 63 are indicated by the arrows D in Fig. 7 .
  • the aligning drive can comprise a respective fluidic cylinder actuator 65a, 67a, such as a pneumatic cylinder, installed on each support arm 65, 67.
  • the fluidic actuators 65a, 67a are depressurized to allow free longitudinal movement of the clamp assemblies 61, 63 when the jaws 51, 52; 53, 54 of the respective clamp assembly 61, 63 are moving toward each other to clamp the respective longitudinal edge portions 20b', 20c'of the coiled blank 20'.
  • the gripper 50 is provided with a floating mechanism which aligns itself to the current position of the coiled blank 20' before actuating the alignment of the longitudinal edges 20b', 20c'.
  • the deformable actuators 61a, 63a of the gripper 50 are used to clamp the coiled blank 20' ( Figs. 8a-8b ). It is important that, although jaws 51, 52; 53, 54 are brought together (clamped) the respective clamp assemblies 61, 63 are free to move as cylinder actuator 65a, 67a are not pressurized. At this stage, the gripper 50 align itself to the position of the coiled blank 20', so if any defect - misalignment - is created in the coiling process it will be repeated at this movement stage by the gripper 50. Then the dies 41, 42 are drive against each other to flatten the longitudinal edge portions 20b', 20c' of the coiled blank 20'.
  • the cylinder actuators 65a, 67a are pressurized to align the clamp assemblies 61, 63 and thus longitudinal edge portions 20b', 20c' of the coiled blank 20' against respective mechanical stops 68, 69 (one of which is regulated by an operator to adjust alignment).

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Replacement Of Web Rolls (AREA)
  • Tyre Moulding (AREA)
EP15461554.6A 2015-08-19 2015-08-19 Apparatus for forming automative wheel rim blanks Active EP3132866B1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP15461554.6A EP3132866B1 (en) 2015-08-19 2015-08-19 Apparatus for forming automative wheel rim blanks
PL15461554T PL3132866T3 (pl) 2015-08-19 2015-08-19 Urządzenie do wytwarzania półwyrobów felg do pojazdów
ES15461554.6T ES2686278T3 (es) 2015-08-19 2015-08-19 Aparato para conformar de forma automatizada piezas en bruto de llantas de rueda

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP15461554.6A EP3132866B1 (en) 2015-08-19 2015-08-19 Apparatus for forming automative wheel rim blanks

Publications (2)

Publication Number Publication Date
EP3132866A1 EP3132866A1 (en) 2017-02-22
EP3132866B1 true EP3132866B1 (en) 2018-06-06

Family

ID=53900782

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15461554.6A Active EP3132866B1 (en) 2015-08-19 2015-08-19 Apparatus for forming automative wheel rim blanks

Country Status (3)

Country Link
EP (1) EP3132866B1 (pl)
ES (1) ES2686278T3 (pl)
PL (1) PL3132866T3 (pl)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4082935A (en) * 1976-07-19 1978-04-04 Torin Corporation Apparatus and method for making wheel rim blanks and the like
US4187406A (en) * 1976-09-13 1980-02-05 Grotnes Machine Works, Inc. Machine for welding seams in automotive wheel rim blanks
US4562326A (en) * 1984-03-27 1985-12-31 Grotnes Metalforming Systems, Inc. Machine for welding automotive wheel rim blanks
US4634038A (en) * 1984-06-15 1987-01-06 Caprioglio Luigi Apparatus for the manufacture of ring members

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
PL3132866T3 (pl) 2018-12-31
ES2686278T3 (es) 2018-10-17
EP3132866A1 (en) 2017-02-22

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