RS1046U - METAL FIBER MACHINE MACHINE - Google Patents

Abstract

A metal fiber fabricating machine consists of at least a metal wire forming system (11) capable of forming multiple metal wires (5) simultaneously that provides translational motion of the metal wire (5) and a cutting system (13) positioned downstream of the molding system (11), which, by cutting to the desired dimension, obtain metal fibers (23), characterized in that the molding system (11) consists of at least one pair (10) of counter-rotating rollers axes parallel to each other, which can be translatomally moved in a plane perpendicular to the direction of motion of the metal wire (5), one of which is a drive roller (24) and the other drive roller (25), which are mounted on the stand (1) of the machine via roller brackets (15) via screws (18). A metal fiber fabricating machine according to claim 1, characterized in that the surface of the drive roller (24) is profiled such that the shape of the surface of the drive roller (24) corresponds to the negative shape of the metal fiber (23), while the surface of the driven roller (25) is profiled so that it corresponds to the positive shape of the shape of the metal fiber (23), wherein the step size (27) of the profile corresponds to the length (28) of the metal fiber (23). A metal fiber fabricating machine according to claim 1, characterized in that the cutting system (13) comprises at least one propeller-shaped cutting knife (19) whose axis (31) is parallel to the axis of the rollers (24 and 25) for forming. and that the blade (29) of the cutter blade (19) closes the angle (30) with the axis (31) of the blade (19). The application contains another independent and 2 dependent patent claims.

Description

Technical field to which the invention relates

The presented invention relates to a machine for the production of metal fibers that are used as a reinforcing element in reinforced concrete, which are mainly used for industrial floors and coverings. The invention belongs to the field of mechanical processing of metals without significant removal of material. According to the International Classification of Patents (IPC), the invention can be classified into the following classes; B21F 45/00, B21F 1/04, B23D 31/00, B23P 17/06.

Technical problem

Metal fibers are used in the construction industry as a reinforcing element in concrete structures such as industrial floors, concrete linings, concrete slabs and others. Metal fiber is a small shaped piece of metal wire, which can be corrugated, in the form of a broken curved line, with hooks at the ends and other shapes used in construction. The shape of the metal fiber ensures a better adhesion to the concrete, and thus ensures greater strength and durability of the reinforced concrete. The metal fiber is usually 20mm to 70mm long, 0.15mm to 1.3mm in diameter, and in reinforced concrete it replaces the classic metal structure that is usually used. An example of a metal fiber can be seen in figure 7 of patent document EP 1 695 775 A1.

Metal fibers are usually produced on machines that consist of wire forming assemblies and metal wire cutting assemblies.

State of the art

Forming assemblies usually consist of an endless profiled chain driven by rollers where the chain elements form the metal wire into the desired shape. Cutting assemblies usually consist of torsional or translational knives for cutting the formed metal wire to form a metal fiber. The cutting assembly is usually located downstream of the forming assembly.

The machine for the production of metal fibers is known from patent documentation EP 1 695 775 A1 as well as from patent documentation EP 0 428 399 A2.

The mentioned known design solutions have a disadvantage that is reflected in the relatively high consumption of electricity, in a large number of elements that are installed in the machine itself, which lead to a greater expenditure of time required for the maintenance of the machine. Due to the greater number of elements, there is an increased possibility of malfunctions. Relatively low productivity is also present.

Since the forming system produces only one form of metal fiber, the production of other forms of metal fibers is either not possible or requires changing the elements that form the metal wire, and due to the complex construction, this requires more time.

The purpose of the presented solution is a machine with low energy consumption, high productivity, which is characterized by minimal time required for maintenance, which is characterized by exceptional ease of handling.

Another purpose of the presented solution is a machine with which, with a very small expenditure of time required for the replacement of wire forming elements, metal fibers of various shapes and dimensions can be produced.

The purpose of the presented solution is also a machine that contains a small number of elements, which reduces the risk of breakdowns, and therefore the minimum time and cost of maintenance.

Exposition of the essence of the invention

The machine for the production of metal fibers consists of two main assemblies: a metal wire forming assembly and a cutting assembly located downstream of the forming assembly.

Both assemblies are placed on the base of the machine, which ensures the support of the machine on the base.

The forming assembly consists of a pair of counter-rotating profiled rollers, one driven and the other driven. Profiled rollers shape the wire to the desired shape. The rollers are profiled so that one has a positive shape and the other has a negative shape. The axes of the rollers are parallel to each other and are in the same plane.

In addition to shaping, the rollers ensure translational movement of the metal wire, i.e. they ensure its translation to the cutting assembly where the metal wire is cut to the specified size.

Forming rollers provide simultaneous forming of multiple wires lined up next to each other.

The arc distance between the profiles on the rollers that shape the wire corresponds to the length of the metal fiber being made.

Profiled forming rollers with metal wire have mutual contact at a point, which results in a small area of the forming rollers participating in the wire forming process, which ensures high work speeds and high productivity.

An assembly for cutting the formed metal wires is located downstream of the forming assembly. The stripping assembly consists of a cutting knife in the shape of a propeller, which is used to cut the metal wires, thereby obtaining a metal fiber.

The axis of the cutting knife is parallel to the axis of the forming rollers. The axis of the cutting knife blade forms an angle with the axis of the cutting knife. This ensures individual cutting of all profiled metal wires to the specified size, which results in a small amount of energy required for cutting profiled metal wires.

The rotary movement of the cutting knife is coordinated with the rotary movement of the forming rollers, which achieves the cutting of the formed metal wire to the exact dimensions, thus obtaining a metal fiber of the same dimensions and characteristics.

In order not to cross paths of wires that are processed at the same time and to ensure proper wire guidance, guiding elements are used. These guide elements are located in front of the forming assembly as well as between the forming assembly and the cutting assembly.

Brief description of the draft images

Figure 1 shows a side view of the metal fiber machine

Figure 2 shows an A-A view of the machine in Figure 1.

Figure 3 shows an axonometric view of the metal fiber forming system. Figure 4 shows an orthogonal projection of the metal wire introducer.

Figure 5 shows an orthogonal projection of the cutting knife

Figure 6 shows the components and the way the machine works

Figure 7 shows a detail from Figure 6

Figure 8 shows one form of metal fiber

Detailed description of the invention

The machine for the production of metal fibers shown in Figures 1 and 2 consists of the base 1 of the machine on which the system 11 for forming metal wires 5, which can simultaneously form twenty-four or more metal wires 5, and the cutting system 13, which is used to cut the formed metal wires 5 to the desired dimension or length 28, whereby metal fiber 23 is obtained.

The metal wire 5 wound on the reels 4 is fed to the wire guide 2 via the guide frame 3. The wire guide 2 has the shape of a frame and contains openings 17, the number of which corresponds to the number of metal wires 5 that are processed at the same time. The diameter of the opening 17 is larger than the diameter of the metal wire 5 so as not to jam the metal wire 5. The wire lead 2 is attached to the base 1 of the machine with screws 18, which enables simple assembly and disassembly.

The system 11 for forming the metal wire 5 consists of at least one pair of counter-rotating profiled rollers 10. The forming system 11 shapes the metal wire 5 to the desired shape and ensures translational movement of the metal wire 5 towards the cutting knife 19. The rotating elements of the machine are protected by the housing 8.

A pair of profiled rollers 10 consists of a drive roller 24 which is powered by an electric motor 20 via a belt 21. The direction of rotation of the drive roller 24 is in the direction of the cutting knife 19. The surface of the drive roller 24 is profiled so that it has the shape and dimensions of the negative shape of the metal fiber 23 being produced. The driven roller 25 has a profiled surface that has the shape and dimensions of the positive shape of the metal fiber 23. The step size 27 of the profile corresponds to the length 28 of the metal fiber 23. The direction of movement of the driven roller 25 is opposite to the direction of movement of the driving roller 24.

The axes of the rollers 24, 25 are parallel to each other. A pair of 10 shaping rollers are supported by rolling bearings, which are not shown in the figure, on roller supports 15, which are connected to each other by a threaded spindle 16. The threaded spindle 16 provides translational movement of the driven roller 25 in a plane perpendicular to the x axis, which defines the desired diameter of the metal fiber 23. The roller supports 15 are connected to the base 1 of the machine by a screw connection 26, which ensures a simple replacement of rollers 24 and 25 for In addition to the forming process, rollers 24 and 25 are also used for pulling the metal wire 5 from the reels 4 and its translation towards the knife 19 for cutting.

Since a large number of metal wires 5 can be processed at the same time, in order to avoid entanglement of the metal wires 5 that are lined up next to each other, guides 12 are used. The guides 12 are plate-shaped and have guiding channels in them, where the number of guiding channels, which are not shown in the picture, corresponds to the number of metal wires 5 that are processed simultaneously. The guides 12 are placed between the wire guide 2 and the forming rollers 24 and 25, as well as between the forming rollers 24 and 25 and the cutting knife 19. The guides 12 are supported on the base 1 of the machine by means of the plate 22.

The cutting system 13 is located downstream of the forming system 11 and is made up of a rotary cutting knife 19. The rotary knife 19 is in the shape of a propeller. The axis 31 of the cutting knife 19 is parallel to the axes of the rollers 24 and 25 for shaping. The blade 29 of the knife 19 for cutting with the axis 31 of the knife 19 overlaps the corner 30, which ensures the gradual cutting of all the shaped metal wires 5 to the given measure or. length 28. Gradual cutting uses less power needed for cutting, and therefore less energy is consumed.

The cutting knife 19 is placed on the base 1 of the machine by bearings 14.

The speed of the rotary movement of the knife 19 is synchronized with the speed of the rollers 24 and 25 for shaping, and this is achieved by means of control electronics 9. Thus, it is obtained that the cutting of the shaped metal wire is always carried out to the exact measure or length 28, whereby a metal fiber 23 is formed.

The obtained metal fibers 23 are collected in the bunker 6, and in case of by-products, they are stored in the storage 7.

Claims (3)

1. The machine for the production of metal fibers consists of at least a system (11) for forming metal wires (5), which can simultaneously form several metal wires (5) and which provides translational movement of the metal wire (5), and a system (13) for cutting located downstream of the system (11) for forming, by which metal fibers (23) are obtained by cutting them to the desired size, it is indicated that the system (11) for forming consists of at least one pair (10) counter-rotating rollers, whose axes are parallel to each other, which can be translated in a plane perpendicular to the direction of movement of the metal wire (5), one of which is the drive roller (24), and the other is the driven roller (25), which are placed on the base (1) of the machine via the support (15) of the rollers by means of screws (18). 2. The machine for making metal fibers according to claim 1 is indicated by the fact that the surface of the drive roller (24) is profiled so that the shape of the surface of the drive roller (24) corresponds to the shape of the negative shape of the metal fiber (23), while the surface of the driven roller (25) is profiled so that it corresponds to the shape of the positive shape of the metal fiber (23), whereby the step size (27) of the profile corresponds to the length (28) of the metal fiber (23). 3. The machine for making metal fibers according to claim 1 is characterized by the fact that the cutting system (13) consists of at least one cutting knife (19) in the form of a propeller, whose axis (31) is parallel to the axes of the rollers (24 and 25) for shaping, and that the blade (29) of the cutting knife (19) overlaps the angle (30) with the axis (31) of the knife (19).