RU2113304C1 - Apparatus for winding metallic bands - Google Patents

Abstract

FIELD: systems for tension winding of flexible members, mainly metallic bands. SUBSTANCE: apparatus includes winding drums and sleeves mounted successively and alternatively on central drive shaft with lengthwise slot. Said drums have lateral guides. Each sleeve has dent placed in said slot of central shaft and portion with increased friction factor. Said portion is in the form of discrete members secured to recesses on lateral surface of sleeve. Apparatus also includes adjusting unit in the form of clamping member and compression springs. Said discrete members may be elastic ones and made, for example, of rubber. Such structure provides automatic control of winding effort for all drums simultaneously. EFFECT: improved design. 4 cl, 2 dwg

Description

 The invention relates to a device for winding with the tension of flexible elements, mainly a metal tape, in several rows at the same time.

 A known drum for winding a tape containing a shell, on the outer surface of which there are longitudinal slots, a shaft with a stop, conical spring-loaded disks interacting with the corresponding surfaces of the shell, and a clamping nut [1].

 The disadvantages of this drum are the complexity of the design and the inability to use it when winding multiple tapes simultaneously with one clamping device.

 A device for winding metal tapes is known, comprising a central drive shaft with a longitudinal groove and winding drums with side guides and bushings with a protrusion located in the longitudinal groove of the shaft and sections with a high coefficient of friction on the side surfaces installed in succession with alternation [2].

 The disadvantages of this device are the design complexity and the inability to displace the winding reels relative to each other during the winding process. Performing solid friction pairs reduces their fastening quality and there is the possibility of their arbitrary disconnection from the bushings due to heating. In addition, it is impossible to automatically stretch all belts at the same time with the same force due to loosening or overtension and, therefore, breakage of the belts.

 The objective of the invention is to simplify the design, increase reliability and increase the productivity of the winding device by providing automatic control of the winding force on all the drums at the same time.

 To solve this problem, a device for winding metal tapes containing a central drive shaft with a longitudinal groove and winding drums with side guides and sleeves with a protrusion located in the longitudinal groove of the shaft and sections with a high coefficient of friction on the side surfaces are provided sequentially with alternation adjusting device, and areas with a high coefficient of friction are made intermittent in the form of individual elements fixed in the recesses of the side surfaces of the bushings a. The adjusting device is a clamping unit mounted on the end of the shaft, and compression springs, which are located between one of the bushings and the clamping unit. Areas with a high coefficient of friction are made elastic, for example, from rubber.

 In FIG. 1 shows a longitudinal section of a device for winding metal tapes; in FIG. 2 is a section AA in FIG. one.

 As shown in FIG. 1, the proposed device comprises a central shaft 1, on the outer surface of which there are bushings 2 and detachable reels for winding tapes, consisting of stepped side guides 3 and shells 4 with longitudinal slots 5 of the opposite direction. Guide bushings 6 and 7 are installed at the ends of the shaft 1, each of which is coupled to a clamping unit made, for example, in the form of nuts 8 and 9. The bushings 2 are provided with a protrusion 10 and recesses on the side surfaces in which the elements 11 are fixed, forming sections with increased coefficient of friction. The shaft 1 is provided with a longitudinal groove 12, in which the protrusions 10 of the bushings 2 are located. The guide bushings 6 and 7 are connected to the central shaft, for example, keys 13 and 14.

 For smooth adjustment of the braking moments of the winding reels, an adjustment device is designed in the form of a clamping unit mounted on one end of the shaft, i.e. nuts 9 and compression springs 15 located between one of the bushings 2 and said clamping unit.

 Elements 11 can be made elastic, for example, from rubber.

 The device operates as follows.

 Shaft 1 with a set of drums, bushings 2, 6, 7 is installed in the drive supports and shaft 1 begins to rotate. Together with it, due to the protrusions 10, the sleeves 2 begin to rotate, and through the elements 11, the drums are rotated. The ends of the tapes are fixed on the shells 4 and the tapes are wound into bobbins. The brake torque of the drums is adjusted with a nut 9, which rotates around the axis and causes the guide sleeve 7 to approach or move away from the last of the bushes 2. As a result, the distance between the guide bushes 6 and 7 changes and the brake torque of the drums on the bushings 2 changes. The springs 15 smoothly are compressed and provide elastic tightening of the sleeves 2 with the drums.

 When cutting a whole sheet into tapes, each of the tapes usually has a transverse thickness difference, therefore, when the shaft 1 rotates when winding tapes cut from the sheet, the diameters of the rolls will be different, and therefore each of the tapes will be wound on a drum with a different tension. In this case, the tape with the least tension sags, and with the greatest - as a rule, it breaks off. The alignment of the tension force is ensured by the slipping of the drums between the sleeves 2, while the tension force on the stopped drum decreases, and on others it increases until they align. This process is carried out automatically and is repeated with all the drums when changing the thickness of the tape.

 The guides 3 of the drums with their outer surface slide along the elements 11 of the bushings 2, providing rotation of the drums at different speeds. After winding, the rolls with drums are removed from the shaft 1, and then the rolls of tape from the shells 4 are removed.

 The use of the invention allows, if necessary, to change the speed of rotation of each of the drum individually and to adjust the tension of the tape during winding automatically, thereby equalizing the tension on each of the drums. As a result, the breakage of the tape during operation is eliminated, productivity is increased and the time taken to start winding devices into operation is reduced, and the reliability of winding machines is increased, mainly for foil or sheet material.

Claims (4)

 1. A device for winding metal tapes containing a Central drive shaft with a longitudinal groove and installed on it sequentially alternating winding drums with side guides and bushings with a protrusion located in the longitudinal groove of the shaft, and sections with a high coefficient of friction on the side surfaces, characterized in that it is equipped with an adjusting device, and areas with a high coefficient of friction are made intermittent in the form of elements fixed in recesses provided on the side surfaces bushings ited.  2. The device according to claim 1, characterized in that the adjusting device is made in the form of a clamping unit mounted on the end of the shaft, and compression springs located between one of the bushings and said clamping unit.  3. The device according to claim 1 or 2, characterized in that the areas with a high coefficient of friction are made elastic.  4. The device according to claim 3, characterized in that the elements of the sections with a high coefficient of friction are made of rubber.

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