RU2765930C1 - Unit for forming periodic profile of composite reinforcement - Google Patents

Abstract

FIELD: construction.

SUBSTANCE: invention relates to construction, namely to equipment for production of composite reinforcement containing spiral winding, which is used for reinforcement of concrete structures and articles. In the composite reinforcement periodic profile forming unit, including the frame, coils, an electric drive, a shuttle device located above each of the coils for spiral winding of the reinforcement bearing rod, in the upper part of the frame coaxially to each other and coaxially with the flow of threads of the bearing reinforcement rod there are the first and the second horizontal coils with hollow cores. Each of the coils has its own disconnected drive. In the lower part of the frame there is a unit for arrangement of replaceable vertical roving bobbins under the first and second horizontal coils.

EFFECT: increased efficiency of the device, provision of possibility to fill coils from bobbin of standard format directly in process of operation without prolonged technological stops in process of production.

1 cl, 2 dwg

Description

The invention relates to the field of construction, namely to equipment for the production of composite reinforcement containing a spiral winding, which is used to reinforce concrete structures and products.

Known is the TECHPRO line of equipment manufactured by LLC NPO TekhKom, represented by the following series: a line for the production of fiberglass reinforcement TP-1000 and a line for the production of fiberglass reinforcement TP-2000.

Both include a block for forming a periodic profile of composite reinforcement, consisting of a frame on which a frame is installed with two coils located in parallel, connected to an electric drive. Twisting occurs due to the drive of the rotation of the coils around its axis, and the winding of the periodic profile due to the rotation of the frame, which moves the coils around the flow of the threads of the supporting rod of the reinforcement.

The known device makes it possible to combine a roving twisting device and a spiral winding device into one unit, however, a disadvantage of the known device is the need to use carrier rod threads as a means of spiral winding, special replaceable coils with unwinding along the outer diameter, or to wind the roving before installation on the device. on the above coils from standard reels (with unwinding along the inner diameter) using a separate device.

The need to use changeable coils with unwinding on the outer diameter reduces the productivity of the equipment, since the above changeable coils are of limited size, which is associated with strong vibrations that occur when they rotate around the flow of threads of the supporting bar of the armature. Thus, it is necessary to interrupt the operation of the periodic profiling unit to replace the coils more frequently.

In addition, externally unwound interchangeable spools are not a standard form of roving production, but are specifically manufactured for use on composite rebar manufacturing equipment, therefore they are produced by a limited number of manufacturers and are expensive.

According to patent RU 2417889, a technological line for the manufacture of composite reinforcement is known, consisting of two blocks of main equipment: a block for preparing and impregnating roving with a polymer binder, including a creel with roving bobbins, a leveling device, an annealing chamber, an impregnating bath, a tension device, a forming device, and a block forming the structure of the outer surface of the reinforcement, including two spiral winding units, polymerization chambers, a cooling bath, a pulling device, a cutting and winding unit, equipped with one or more additional units of equipment for performing spiral windings of the inner layers of the reinforcement.

The disadvantage of this technological line is the low productivity of the equipment associated with interruptions in operation caused by the need for frequent replacement of coils of pre-twisted roving in the spiral winding units.

The closest to the claimed technical solution is the technological line for the manufacture of composite reinforcement known from patent RU 2534130, which includes a block for forming a periodic profile of composite reinforcement, consisting of a device for twisting roving threads installed on the frame to form a supporting reinforcement rod, two parallel coils with a thread for spiral winding of the armature carrier bar, equipped with electric drives and made with the possibility of synchronous rotation around its axis, while above each of the parallel coils there is a shuttle device for spiral winding of the armature carrier bar.

The disadvantage of the known device is the need before installation on the device, to wind the roving on the above coils from standard reels with unwinding along the inner diameter using a separate device. The need to use replaceable coils with external unwinding, despite the fact that the known device processes two threads of the threads of the supporting rod of the reinforcement, reduces the productivity of the device, since the above-mentioned replaceable coils have a limited size associated with a limited amount of space for their placement in the frame of the device. The use of roving bobbins of a standard format with unwinding along the inner diameter on a known device is impossible due to technological limitations of the equipment, in particular, with a limited amount of space for their placement.

The technical result of the claimed invention is to increase the productivity of the device, providing the possibility of filling coils from a standard format bobbin directly in the process of operation without long technological stops in the production process.

The technical result is achieved by the fact that in the block for forming a periodic profile of composite reinforcement, including a frame, coils, an electric drive, a shuttle device located above each of the coils for spiral winding of the flow of threads of the bearing rod of the reinforcement, according to the invention, in the upper part of the frame coaxially with each other and coaxially the first and second horizontal coils with hollow cores are located with the flow of threads of the supporting rod of the reinforcement, each of which has its own switchable drive, in the lower part of the frame there is a unit for placing replaceable vertical roving bobbins under the first and second horizontal coils.

Two horizontal coils with hollow cores, located coaxially with the flow of threads of the carrier rod, and a node for alternately placing a vertical roving bobbin under the first and second horizontal coils, ensure the continuity of the claimed unit, since only one of its nodes works at startup, where the thread is rewound from the vertical roving bobbin, located under the first upper bobbin, equipped with its own electric drive, to the above bobbin, the drive of which is connected at this moment, while in the process of rewinding the thread is twisted, and after unwinding the thread from the lower vertical roving bobbin, it changes to a new one and is placed under the second upper coil, the same process is repeated as with the first upper coil. At the same time, in order to form a periodic profile (rib) in the first node, the operating mode changes and the rewound (twisted) thread is wound by a shuttle from the first upper coil directly onto the thread flow of the armature carrier rod passing through the coaxial hollow cores of the upper coils, while the drive of the first upper spool is turned off, when the thread is completely unwound from the node working on the formation of a periodic profile, there is a short stop to reinstall the thread from the reserve spool already wound by that time. During operation of the device, the flow of threads of the carrier rod passes through the cores of the horizontal coils. Thus, both nodes work alternately, which ensures the actual continuity of the equipment, and, therefore, provides an increase in productivity.

The claimed invention makes it possible to exclude the use of replaceable coils, since coaxial coils are part of the equipment, and to use standard format roving bobbin (260 mm high; 185 mm in diameter; weighing 9-15 kg) for filling the coils directly in the process of operation.

Tests conducted by the applicant of a prototype of the claimed block for forming a periodic profile of composite reinforcement showed that it provides continuous winding of the rib for 12 hours or more, since during the production process the operating modes of the block units alternately change, the device uses roving reels of a standard format (260 mm high ; diameter 185 mm; weight 9-15 kg, unwinded along the inner diameter), due to the location of the upper coils coaxially with the flow of the thread of the carrier rod; during operation of the device, the angle of application of the rib to the flow shaft of the bearing rod of the reinforcement, close to a straight line, is observed, which makes it possible to obtain high characteristics for tearing out reinforcement from concrete; the step of winding the rib is adjustable in the range from 10 to 30 mm.

The essence of the claimed utility model is illustrated by the figure:

In FIG. 1 shows a side view of the block for forming a periodic profile of composite reinforcement.

In FIG. 2 shows the upper part of the block for forming a periodic profile of composite reinforcement in the section.

The block for forming a periodic profile of composite reinforcement contains a frame 1, the first 2 and second 3 horizontal coils with hollow cores, each of which has its own switchable drive 4, 5 and a shuttle device for spiral winding of the supporting rod 10 of the reinforcement, in the lower part of the frame there is an accommodation unit ( not shown in the drawing) interchangeable vertical reels 8 roving under the first 2 and second 3 horizontal coils. Switchable drives 4, 5 of horizontal coils 2 and 3 are connected to electric motors 11, 12. Shuttle devices are thread holders 6, 7 for spiral winding of the armature support rod 10, rigidly fixed to the flywheels 13, 14 of drives 4, 5.

The threads after the impregnation and squeezing unit are stretched by the node 9 for forming the flow of the supporting rod 10 of the reinforcement, at the exit of which the threads are collected in the main bundle (the flow shaft of the threads of the supporting rod), twisted against the direction of application of the periodic profile (ribs).

The unit for placing replaceable vertical roving spools under the first and second horizontal spools can be made, for example, in the form of two separate mounting devices equipped with drives and rotating devices and located directly under the first and second horizontal spools or in the form of an automated device for moving the roving spool, equipped with a separate rotating device. A replaceable roving bobbin is placed directly under the first and second horizontal spools in turn, while the presence of a rotating device in the unit for placing replaceable vertical roving spools under the first and second horizontal spools allows the roving threads to be twisted directly in the process of its rewinding onto the spools. Twisting is carried out due to the rotation of the bobbins, and the coils are filled with already twisted roving. A pre-rolled roving bobbin can also be used.

The drives of the horizontal coils are closed, for example, by means of pins, through holes in the side walls of the coils and the flywheels of the drives. The drives contain separate electric motors.

Protection of working personnel from mechanical influences is provided by a frame with a protective cover. All electrical contacts in the design are insulated and closed from accidental access inside special electrical boxes. Elements of pneumatic equipment are inside the protective casing (not shown in the drawing).

Claims (1)

A block for forming a periodic profile of composite reinforcement, including a frame, coils, an electric drive, a shuttle device located above each of the coils for spiral winding of the flow of threads of the bearing bar of the reinforcement, characterized in that in the upper part of the frame coaxially with each other and coaxial with the thread flow of the bearing bar of the reinforcement the first and second horizontal coils with hollow cores are located, each of which has its own switchable drive, in the lower part of the frame there is a unit for placing replaceable vertical roving bobbins under the first and second horizontal coils.

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