Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
  • B21F—WORKING OR PROCESSING OF METAL WIRE
  • B21F1/00—Bending wire other than coiling; Straightening wire
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
  • B21F—WORKING OR PROCESSING OF METAL WIRE
  • B21F37/00—Manufacture of rings from wire

Definitions

• the present Invention Alteration refers to invention with No960100215 which is dealing with a method and a machine for the manufacture of metallic frames for the Inner Spring Mattresses.
• connection of the two ends is performed with a small tube instead of the plate or with butt welding.
• the principal drawbacks of the existing technology are : two machines are used : the straightening-bendrng machme and the connective machine which are independent of each other. For this reason, manual work is necessary for the collection and transportation of the open frame to the connective machine.
• the worker collects the difficult to handle open frame, which bends easily, transports it to the connective machine, supplies the machine with the said open frame suitably positioned, activates the machine, which connects the two free ends of the open frame with a metallic clip or a small tube or by butt welding in the sequel the worker collects the closed frame and repeats the above procedure for each new frame for construction. It must be emphasized that the manual actions are usually performed by more than one worker for achieving a decent productivity.
• the aim of the present invention is to solve the problems described above by offering a method which permits the automated manufacture of metallic frames for inner spring mattresses in a simple and quick manner.
• the objective of the present invention is to offer an arrangement which renders the automation of the manufacture of metallic frames for inner spring mattresses possible, and which is simple in its design, reliable m its operation and easy to use.
• Drawing 1 is a side view and partial longitudinal cut of the machine for the manufacture of metallic frames for mner spring mattresses.
• Drawing 2 is a top view and partial cut.
• Drawing 3 is a cross sectional view.
• Drawing 4 is a side view of the part with the connective mechanism.
• Drawmg 5 is a cross sectional cut of the machine.
• Drawmg 6 illustrates an example of the connection of the two ends of a metallic frame for mner sprmg mattresses of round wire of a circular cross section constructed by the machme according to the present invention.
• Drawmg 7 illustrates an example of the connection of the two ends of a metallic frame for mner sprmg mattresses of round wire constructed by the machme according to the present invention.
• Drawmg 8 illustrates another implementation of the connection of the two ends of a metallic frame for mattresses fitted with springs made of flat wire, constructed by the machme according to the present invention.
• Drawmg 9 illustrates an example of a metallic frame for mner sprmg mattresses constructed by the machme according to the present invention.
• Drawmg 10 illustrates another implementation of a metallic frame for mner sprmg mattresses constructed by the machme according to the present invention.
• Drawmg 11 illustrates another implementation of a metallic frame for mattresses fitted with springs constructed by the machme according to the present invention.
• Drawmg 12 illustrates all the stages of the connection of the two ends of the frame m a cross sectional cut of the connective mechanism.
• Drawmg 13 is a front view of the connective mechanism.
• the round wire or the flat wire (1) is fed with the assistance of a rotary mechanism (8), an open elliptical or circular frame is produced with a length equal to the circumference of the frame under construction.
• the cut-off is performed with simultaneous formation of incisions in the surface of the round wire or flat wire (1) usmg a cutter (4).
• the formation of the ends of the round wire or flat wire may be performed by a forming device prior or following the cut -off.
• the two ends of the circular frame come mto contact with the assistance of the rotary mechanism (8) mto a connective mechanism (6) where they are rigidly retained appropriate position by tow jaws (22,23) m the.
• connection plate (14) which comes from a spinning wheel (10), and which is fed by a mechanism with an adjustable step (15) and is then suitably pressed so that the material of the connection plate (14) penetrates mto the incisions of the ends of the round wire or flat wire (1). In this manner the strong connection of the two ends of the frame under construction is ensured.
• the closed frame produced is transported by an arm (13) to the bending unit (9) where it is bent to particular positions and at particular angles so that a frame of a desirable shape is produced.
• the said round wire (1) is formed mto an ellipse or circle bent across the axis with the smaller inertia torque and then at the bending unit (9) it is bent at the suitable angle, usually at right angles to the plane of the initial elliptical or circle.
• the above mentioned method is implemented, m the machme the description of which follows.
• the operation of the mdividual mechanisms is controlled by a microprocessor.
• the round wire or flat wire (1) is fed and straightened m the feedmg-straightenmg mechanism (2), whereas the fed length of the said round wire or flat wire (1) is measured by the measuring device (3).
• the material passes through the cutter (4) which is suitably formed so that shapmg of the ends of the round w re or flat wire (1) is performed along with the cut-off and is fed through the guide (5) towards the connective mechanism.
• the jaws (7) of the rotary arm (8) is located in the outlet of the said connective mechanism.
• the round wire or flat wire (1) is secured by the jaws (7), the rotary arm (8) rotates simultaneously in co-ordination with the feedmg-straightenmg mechanism (2) and transports the jaws (7) to the across side of the connective mechanism (6) without yet bemg m contact with it, forming an open elliptical or circular frame.
• the cutter (4) After the length of the fed material is equal to the circumference of the frame under construction cut-off and suitable forming of the ends occurs m the cutter (4), whereas the edge of the produced frame and the other edge of the subsequent frame are formed.
• the round wire or flat wire (1) of the frame produced is then fed by the existing round wire or flat wire (1) of the subsequent frame m the connective mechanism (6) via the guide (5), which consists of two parts : a fixed and a movmg one, suitable for free rotation around the pm (17).
• the feeding stops after the ending of the round wire or flat wire (1) of the frame under production reaches a particular position of the mechanism (6).
• the round wire or flat wire (1) is secured by a jaws (23) so that it remains stationary.
• the new round wire or flat wire (1) of the subsequent frame moves backwards by a particular length so that it frees the movmg one part of the guide (5).
• connection plate (14) commg from the wheel (10) is fed by the feeding mechanism (15) with an adjustable steady step to the connective mechanism (6) at right angles to the round wire or flat wire (1) of the frame under construction and at a length depending on the circumference of the said round wire or flat wire (1) (Drawmg 12A) ; it then intersects at the respective length with the assistance of a fixed (20) and or a movmg one cutter (19) which, movmg upwards as illustrated m (Drawmg 12A) and with the assistance of the downwards movmg shaper (18) it bends the connective plate (14) around the round wire or flat wire (1) (Drawing 12B).
• the upper shaper (18) moves upwards, the second shaper (21) frees the connection space, movmg to the side along an arc, the upper shaper again descends and presses the round wire connection (14) (Drawmg 12E) hardly so that the material of the said connective plate (14) penetrates mto the m ⁇ sions of the round wire or of the flat wire (1) of the frame under construction resulting m a strong connection of the ends of the frame as illustrated m drawings 6 and 7.
• the connection can be performed by hooking the suitably shaped ends as illustrated m the example of Drawmg 8 or by butt welding or by glue and suitable plate or small tube.
• the frame which is now closed is transported by the arm (12) to the bendmg mechanism (9) located across of the connective mechanism (6).
• This consists of the feeding —length measurement sheaves (11) and the bendmg sheaves(12).
• the closed frame is fed and curved at predetermined positions and angles so that the frame required is produced.
• the bendmg mechanism is positioned so that the round wire (1) is curved under a suitable angle, usually at right angles to the plane of the closed elliptical or circular frame at particular angles and predetermined positions.
• the pressmg tool (21) has to form an Arc during its operation m order to come side ways to the pressmg Area (12c) and the one pressmg tool (18) requires to be more downwards pushmg the second pressmg tool (21) which forms the clipping making the possibility of very often breakages of the tools m addition to the fact that if the cutting tool breaks the whole system needs to be changed.
• the two wire ends are winding with the clipping material (14) which is getting unwinded continuously by a coil/ swift (10) which is advanced from feedmg adjustable step mechan ⁇ sm(15).
• the clipping material (14) is suitably pressed so to enter the grooves at the wire ends of the produced frames.
• the loop is transported to the bendmg mechanism (9) through a transportation mechanism (13) where the required frame is produced.
• the big advantage of this mvention is that the entrance of the wire (Round and flat) at the groove of the guide (24) is movmg and ar ⁇ vmg without secondary mechanism at a pomt before its entrance on the clipping mechanism without requiring the initial length measurement stoppage to the g ⁇ pper to catch it and to start feedmg again.
• the pressmg tool mechanism (21) which has to form an Arc during its operation m order to come sideways m addition to the auxiliary clipping tools (18,20) (Drawmg 12) are all located on to a tool magazme (Drawmg 17) which is moving only perpendicular to the wire line with intermediate positions which correspond to the required tool needed to perform a job.
• a tool magazme Drawmg 17
• the cutting of the round or flat wire and the shapmg of the wire ends is performed on two separated hydrauhc presses unlike before that both operations were performed at the same time on a single press (4). This method ensures better tool wear and better product quality.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Wire Processing (AREA)
• Springs (AREA)

Applications Claiming Priority (3)

Publications (1)

Family

ID=10943816

Family Applications (1)

Country Status (6)

Families Citing this family (6)

Family Cites Families (11)

• 1999
  • 1999-05-11 GR GR990100157A patent/GR990100157A/el unknown
• 2000
  • 2000-03-03 CA CA002334779A patent/CA2334779A1/en not_active Abandoned
  • 2000-03-03 WO PCT/GR2000/000009 patent/WO2000067933A1/en not_active Application Discontinuation
  • 2000-03-03 EP EP00906534A patent/EP1171251A1/de not_active Withdrawn
  • 2000-03-03 AU AU28189/00A patent/AU2818900A/en not_active Abandoned
  • 2000-12-20 US US09/741,915 patent/US20010032359A1/en not_active Abandoned

Non-Patent Citations (1)

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