RU2131357C1 - Apparatus for moving ferromagnetic strip to press zone - Google Patents

Abstract

FIELD: plastic metal working, namely moving ferromagnetic strip to press zone. SUBSTANCE: apparatus includes container for placing stack of strips onto it, mechanism for lifting container, roller supports in the form of magnet-roller tracks with guiding pins and mechanism for moving strip to press zone. The last has power cylinder with spring-loaded gripping member supporting roller engaging with stack of strips. Guiding pins are in the form of cone guides mounted on rotary levers with possibility of their fixation by means of two successive threaded joints with opposite threads. Ferromagnetic plates are arranged on ends of magnet-roller tracks and they engage with stationary secured magnetic bases. EFFECT: possibility of reliable motion of strip from stack to press zone independents upon accuracy of strip stacking. 3 cl, 5 dwg

Description

 The invention relates to the field of metal forming and can be used to move the ferromagnetic strip into the press zone.

 A device is known by A.S. N 789189, MKI B 21 D 43/00 for moving the strip into the press zone, which contains the container on which the stack of strips is laid, the container lift, roller bearings above the stack of strips and the mechanism for moving the strip into the press zone, consisting of a power cylinder with a spring-loaded gripper body.

 During operation of this device, exact stacking of strips in the store is required, for their subsequent supply to the press zone and, therefore, a store is required for each stack of strips, which makes the construction more expensive and complicates the process when installing a stack of strips of increased length up to 5000 mm and a wide range of strip widths from 50 mm to 500 mm, especially if the strips are delivered to the press in a freely stacked state, without magazines.

 In addition, the spring-loaded gripping body, when returning to capture the next strip, is pressed by the spring to the foot of the strips and, as a result of friction against the upper strip, leaves traces and scratches on it.

 The claimed invention is aimed at simplifying the process of moving a ferromagnetic strip into the press zone. The technical result that can be obtained by implementing this invention is the ability to reliably move the strip from a freely installed foot to the press area, regardless of the accuracy of its stacking.

 The specified technical result is achieved by the fact that in the known device for moving a ferromagnetic strip into a press zone, including a container on which a stack of strips is laid, a container elevator, roller bearings above a stack of strips and a mechanism for moving the strip into a press zone, consisting of a power cylinder with a spring loaded gripper body, the roller support is made in the form of magnetic roller tracks with catchers, and on the gripping body there is a roller in contact with a stack of strips.

 Catchers are made in the form of conical guides mounted on pivoting levers with the possibility of their fixation by means of two threaded connections made in series with the opposite direction of the thread.

 At the ends of the magnetic-roller tracks, ferromagnetic plates are installed that interact with stationary magnetic bases.

 In FIG. 1 shows a general view of a device for moving a ferromagnetic strip into a press zone; in FIG. 2 is a plan view of FIG. 1; in FIG. 3 is a section AA in FIG. 1; in FIG. 4 is a section BB in FIG. 2; in FIG. 5 is a cross-section BB in FIG. 2.

 A device for moving a ferromagnetic strip into a press zone comprises a container 1 on which a stack of strips 2 is mounted, a container lift 3, roller bearings above a stack of strips made in the form of magnetic roller tracks 4 with catchers 5, a mechanism for moving the strip into a press zone, consisting of the power cylinder 6 with a spring-loaded spring 7 gripping body 8, on which the roller 9 is mounted, with the possibility of contact with the stack of bands 2.

 Magnetic roller tracks 4 include rollers 10 and magnets 11 and are mounted on brackets 12 and 13 mounted on the bed 14. The brackets 12 and 13 provide the magnetic roller tracks 4 with a vertical degree of freedom and limit them from lateral and longitudinal movements by means of ribs 15 on the brackets 12 and 13 and vertical surfaces 16 made at the ends of the magnetic roller tracks 4 and abutting against the end surface of the brackets 12 and 13.

 The master cylinder 6 is mounted on a bracket 17, which is mounted on the frame 14 with a vertical degree of freedom and is limited from lateral and longitudinal movements by the frame 14 and the plates 18 mounted on the frame 14.

 Catchers 5 are made in the form of conical guides 19 mounted on pivoting levers 20 with the possibility of their fixation by means of two threaded connections 21 and 22 in series with the opposite thread direction. The ability to rotate the levers 20 is due to their rigid connection with the axis 23, which through a threaded connection 21 is connected to the housing of the magnetic roller track 4. The fixing of the lever 20 is carried out by means of a threaded connection 22 with a nut 24.

 At the ends of the magnetic roller tracks 4, ferromagnetic plates 25 are mounted, interacting with magnetic bases 26 fixedly fixed to the brackets 12 and 13.

 The device operates as follows.

 The strip material is supplied to the press and reinforcement production of AVTOVAZ JSC from metallurgical enterprises in the form of stop bands pulled by a packing metal tape, and installed, in this form, by means of a crane, after cutting the packing tape, onto the container of the device for the subsequent transfer of the ferromagnetic strip into the zone press. In this case, as a result of transportation and installation operations, there is a mutual displacement of the strips in the foot.

 Due to the inaccurate and free position of the strips in the foot, when they are moved to the press zone, skew often occurs with the subsequent loss of strips from the foot and the creation of emergency situations.

 In the present invention, the upper strip, when lifting the container 1 with a stack of strips 2, falls into the magnet attraction zone 11, is attracted by them and pressed to the rollers 10. The position of the upper strip is guided by the tapered guides 19 along the axis of the magnetic roller tracks 4 and is maintained in this position in the process of moving it into the press zone by the gripping body 8.

 The roller 9 mounted on the gripping body 8, during its return movement, rolls along the upper strip of the foot, which softens the contact of the gripping body 8 with the strip and protects it from possible traces and scratches.

 The conical guides 19 can, by turning the lever 20, move towards the axis of the magnetic roller tracks 4, thereby adjusting the distance between the conical guides 19, in accordance with the width of the strip.

 The pivot arm 20 is fixed with a nut 24, while since the thread 21 has an opposite direction relative to the thread 22 made on the axis 23, the action of the force from the side of the foot of the strips 2 on the conical guide 19 only increases the fixing force due to the mutual tightening of the threaded joints and eliminates the possibility of release.

 In order to prevent the possibility of breakage of the magnetic roller tracks 4 and the master cylinder 6 with the gripper 8 when the foot 2 is lifted by the elevator 3 above a predetermined level, in case of emergency, the magnetic roller tracks 4 and the master cylinder 6 with the gripper 8 are installed with a vertical degree freedom, and at the ends of the magnetic roller tracks 4 there are ferromagnetic plates 25 interacting with the magnetic bases 26, the attraction of which provides sufficient force for fastening the magnetic roller tracks 4 to the nshteinam 12 and 13.

 The implementation of roller bearings in the form of magnetic roller tracks with catchers provides the ability to reliably move the strip from a freely installed foot to the press area, regardless of the accuracy of its stacking, which eliminates the need for stores and the operation of laying stop bands in them or the development and manufacture of more expensive devices with a mechanism for the transverse feed of the strip and the longitudinal drive conveyor, similar to the devices used in the press and reinforcement production of VAZ, which will make it cheaper structure of the apparatus and process.

 The installation of ferromagnetic plates at the ends of the magnetic roller tracks interacting with permanently fixed magnetic bases makes the device design protected from emergencies associated with the possible rise of the stack of bands above a predetermined level.

Claims (3)

 1. A device for moving a ferromagnetic strip into a press zone, comprising a container with a stack of strips, a container elevator, roller bearings above a stack of strips and a mechanism for moving a strip into a press zone, consisting of a power cylinder with a spring-loaded gripping body, characterized in that the roller supports are made in in the form of magnetic roller tracks with catchers, and a roller with the possibility of contact with a stack of bands is mounted on the gripping organ.  2. The device according to claim 1, characterized in that the catchers are made in the form of conical guides mounted on rotary levers with the possibility of their fixation by means of two threaded connections made in series with the opposite direction of the thread.  3. The device according to claim 1, characterized in that at the ends of the magnetic roller tracks mounted ferromagnetic plates with the ability to interact with stationary magnetic bases.

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