RU2261154C1 - Wire feed mechanism and member for orienting wire for it - Google Patents

Abstract

FIELD: wire working processes, possibly used in machine tools for making helices, springs.

SUBSTANCE: mechanism includes base with vertical axis; rotary mechanism having bracket and member for orienting wire in bracket; guide. Rotary mechanism is in the form of rotary hollow tube tapered in its upper portion. Taper angle relative to vertical axis is less than angle between vertical axis and wire orientation direction. Orienting member is rigidly mounted in bracket and it is in the form of plate in opening of which cylindrical sleeve is arranged. Inner diameter of said sleeve exceeds wire diameter. Axis of sleeve is inclined relative to horizon. The same orienting member is provided in upper end of hollow tube. Guide is in the form of logement made of angle whose one end is placed near upper end of hollow tube. Rib of logement is bent for orienting it along wire feed direction. Logement is also provided with wire orienting members rigidly mounted in its faces. Plate of orienting member has radial slit and it is provided with screw for changing geometry size of slit and opening.

EFFECT: simplified design, increased useful life period, improved operational reliability of wire feed mechanism.

5 cl, 1 dwg

Description

The invention relates to a technology for processing wire and can be used in machines for the manufacture of spirals, springs.

Known mechanisms for feeding wire in devices for its processing, which contain a base with a support for installing a coil with wire and support rollers for guiding the wire to a device for processing it (see descriptions for copyright certificates of the USSR No. 671905, B 21 F 23/00, 1977 [1], No. 751479, B 21 F 21/00, 1978 [2]). The disadvantages of these mechanisms is the need for significant efforts to pull the wire at the beginning of its winding to rotate a heavy coil, which leads to wear of the elements that pull the wire to the device for processing it.

The closest analogue is the mechanism for feeding the wire to the device for processing it according to the patent of the Russian Federation No. 2076500, IPC 6 B 21 F 23/00, publ. 03/27/97. [3]. In accordance with the patent, a wire coil is mounted on a base on a fixed vertical axis and is equipped with a slider in the form of a bracket, the axis of rotation of which is oriented tangentially to the circumference of the guide roller. During operation, the wire is pulled through the guide tube, it bends around the roller at the end of the bracket, makes it rotate and wind the wire from a fixed coil. The disadvantages of the mechanism are its more complex design, which assumes the presence of a tilt stand, two bearings, an additional base for the guide roller, which increases the cost of the mechanism, as well as insufficiently reliable wire feed to the device for processing it, because it uses an arm with a roller at the end - a wire orientation element, with whose wire can slip and disrupt the production process.

The objective of the invention is to simplify the design of the wire feed mechanism, reduce its cost, increase the reliability and durability of its work.

The problem is solved by the design of the wire feed mechanism, including a support for installing wire packaging - coils or coils with wire, on the base, the support consists of two bushings that are stationary relative to each other with the possibility of removing one of them from the other, mounted on a fixed vertical axis, on the upper sleeve (fixed vertical axis) a rotary mechanism is installed with a bracket with a wire orientation element mounted on it outside the packaging of the wire, the feed mechanism also contains a ulation of the wire for its supply to the device processing. The difference of the proposed wire feed mechanism is the embodiment of the rotary mechanism with the wire orientation element and the execution form of the guide, which is as follows. The swivel mechanism is a hollow tube mounted on a fixed vertical axis with the possibility of free rotation about this axis, the bracket is perpendicular to the axis of rotation, in the lower part of the hollow tube, made in the upper part by a beveled plane from the side of the bracket with an angle of inclination relative to the vertical axis smaller than the angle between this axis and the direction of wire feed from the bay, i.e. less than the angle between this axis and the line connecting the upper end of the hollow tube to the location on the bracket of the orientation element, the orientation element is mounted rigidly on the end of the bracket and is a clamp plate with a clamping hole in which a cylindrical sleeve with an outer diameter equal to the clamp hole is installed , an inner hole with a diameter larger than the diameter of the wire made of hard alloy, the orientation element is mounted on a bracket with an inclination of the axis of the sleeve of the orientation element with respect to to the riso, preferably at 45 °. The same orientation element is provided with the end of the upper part of the hollow tube, which is also fixedly mounted, with the axis of its sleeve oriented in the direction of the wire feed, approximately lying on the connection line of the upper end of the hollow axis with the location of the orientation element on the bracket. The guide is made in the form of a lodgement from a corner, one end of which is installed in sufficient proximity to the upper end of the hollow tube to avoid bending the wire, the other end is directly at the feed rollers, the lodgement rib is made with a bend in horizontal and vertical planes to orient it in the direction of wire feed , the lodgement is equipped with the wire orientation elements of the construction described above rigidly mounted on its faces with the axes of the bushings oriented in the direction of the location of the lodgement rib and those. in the direction of the wire feed. Such a design of the wire feed mechanism will make it possible to orient the wire with its lowest stresses without kinks from the bay to the processing device, to ensure its free flow with minimal friction with simplicity, reliability and durability of the structure.

Known are the designs of the wire orientation element in the wire feed mechanism, which are made in the form of a tube, a sleeve with an inner diameter equal to or greater than the diameter of the wire, with an axis oriented along the wire feed direction (see the description of the patent of the Russian Federation No. 2076500, IPC 6 B 21 F 23/00, published March 27, 1997. [3], description of the patent of the Russian Federation No. 2166399, IPC 7 B 21 F 35/00, published May 10, 2001. [4]). Typically, these bushings are installed rigidly, motionless relative to other structural elements of the mechanism, for example relative to the base, by welding. Due to the impact on the inner surfaces of the tube, the bushings of large friction forces caused by the movement of the wire, they undergo rapid abrasion. When abrasion of the inner surfaces of the sleeve, it requires replacement, but since it is installed motionless, it is removed with great difficulties and inconvenience, while spoiling the base to which the sleeve is welded. The disadvantage of this design is the fragility of the design as a whole, its low reliability and maintainability.

The closest analogue of the orientation element can be selected sleeve design according to the patent of the Russian Federation No. 2076500 [3].

The objective of the invention is to increase the durability of the design of the wire feed mechanism, reliability and maintainability.

The problem is solved by the design of the element of orientation of the wire, including a sleeve with an inner diameter larger than the diameter of the wire, the difference of which from the prototype is to install the sleeve in the hole of the clamp plate, for example, of a rectangular shape made cut in radius as a terminal clamp, equipped with a screw at the location of the cut perpendicular to it, installed with the possibility of changing the geometric size of the section and the hole (its increase or retraction) for fixing in the hole of the clamp sleeve or its removal to replace it with a new one.

It is known to use terminal clamps for quick removal, for example, from battery terminals in a car. Given that the terminal clamps in the proposed mechanism for feeding wire are rigidly, fixedly mounted on the structural elements of the mechanism: on the bracket, on the hollow tube of the rotary mechanism, on the cradle, they maintain the integrity of the structure of the mechanism when the bushings are worn and replaced, making it easy to replace worn bushings, their use in the indicated quality is unknown.

The drawing shows a mechanism for feeding wire to a device for processing it with views A and B of its individual elements.

The wire feed mechanism consists of a base 1, on which a fixed vertical axis 2 is fixed for installing a wire package, which can be represented either by a coil or a coil (not shown). On a vertical fixed axis 2, two cylindrical bushings 3 lower and 4 upper are fixedly mounted; the latter is installed with the possibility of its removal from the axis 2. The bushings 3 and 4 are equipped with bay fixing elements, which are made in the form of vertical posts 5 of the lower sleeve 3, mounted on a base 1 around a circle with a diameter not larger than the inner diameter of the bay, and a rim 6 of the upper sleeve 4 located at a height not less than the height of the bay, mounted on radial rods - spacers, which are equipped with struts-jibs 7, mounted on a conical generatrix, the smaller base of the cone facing the base 1. On the vertical axis 2 is installed Olaya tube 8 with the bracket member 9 and the orientation of the wire 10 is rigidly mounted, eg welded, on the end bracket 9. The feed mechanism 11 also includes a guide wire feed device for processing. The hollow tube 8 is mounted on a vertical fixed axis 2 with the possibility of its free rotation relative to this axis 2, the bracket 9 is perpendicular to the axis 2 in the lower part of the hollow tube 8. The upper part of the hollow tube 8 is made by a beveled plane from the side of the bracket 9 with the bevel angle to the vertical axis 2, smaller than the angle between this axis and the line connecting the upper end of the hollow tube 8 with the end of the bracket 9. The orientation element 10 is mounted rigidly on the end of the bracket 9 outside the bay and represents The terminal clamp is in the form of a rectangular plate with a hole, with a radial cut 12, in the hole of which a cylindrical sleeve 13 with an external diameter equal to the clamp hole, an internal hole with a diameter larger than the diameter of the wire made of hard alloy is inserted (see type A). The radial section 12 of the clamp 10 is provided with a screw 14, so that it is possible to resize the radial section 12 and the holes of the clamp 10. The orientation element 10 is mounted with the axis of its sleeve 13 inclined relative to the horizon, preferably at 45 ° (view B). The same orientation element 10 is provided with the end of the upper part of the hollow tube 8, which is fixedly mounted, with the axis of its sleeve 15, approximately oriented along the line connecting the ends of the hollow tube and the bracket. The guide 11 is made in the form of a lodgement from a corner, one end of which is installed in sufficient proximity to the upper end of the hollow tube 8, at a distance at which there are no kinks in the wire. The other end of the guide 11 is located directly at the feed rollers 16 of the wire processing device. The lodgement rib 11 is made with a bend to orient it in the direction of the wire feed, the lodgement is equipped with wire orientation elements of the construction described above with the axes of their bushings oriented in the direction of the location of the lodgement rib 11, i.e. in the direction of the wire feed.

The mechanism works as follows. At the beginning of work, new bushings 13 are inserted into the holes of the terminal clamps 10 and clamped in them with screws 14; the upper sleeve 4 with a rim 6, jibs 7, a hollow tube 8 with an arm 9 is removed from the vertical strut 2; on the base 1, on a vertical strut 2, struts 5, a bay (not shown) is installed, the inner and upper part of which, when the removed part of the mechanism is reinstalled, is fixed by jib 7 and the rim 6 of the upper part of the mechanism, respectively. The end of the wire from the bay through the sleeve 13 of the terminal clamp 10 of the swivel bracket 9, then along the axis 15, to the sleeve 13 of the terminal clamp 10 mounted on the end of the hollow tube 8, and then through other orientation elements 10 mounted on the tool tray 11, is installed in the feed mechanism wire. The location of the first orientation element 10 on the bracket 9 at an angle of approximately 45 ° allows you to install the wire in it without unnecessary stresses, and the swivel bracket 9, which is affected by the efforts of the tension of the wire due to a change in its position relative to the original in the bay, rotates on the axis 2 arbitrarily and relieves these efforts. The beveling of the hollow tube 8 at an angle smaller than the angle formed by the line connecting the end of the bracket and the upper end of the tube does not interfere with the location of the wire in the section from the end of the bracket to the upper end of the tube and does not create additional friction in the mechanism. In the lodgement 11, the wire passed through the bushings 13 of the elements of its orientation 10, curved along the bend line of the lodgement, is fed to the rollers 16 of the device for its processing with minimal bending forces and friction. The bending of the lodgement rib in horizontal and vertical planes allows you to pair, "align" the location of the wire in the bay on the base and the processing location of the wire located at different levels. After turning on the electric motor of the wire processing device, the feed rollers 16 begin to push the wire directly to the processing units. In case of wear of the bushings 13 of the orientation elements 10, they can easily be replaced by others by unscrewing the screws 14, loosening the cuts 12 and the holes of the terminal clamps 10. Removing the terminal clamps themselves from the bracket 9, from the tube 8, from the lodgement 11 is not required. An additional condition for the implementation of the sleeve made of hard alloy increases the life of the sleeve element of the orientation of the wire by reducing friction of the wire on its inner surface. The wire feeder is simple and reliable.

Sources of information

1. Description to the author's certificate of the USSR No. 671905, B 21 F 23/00, 1977;

2. Description to the USSR certificate of authorship No. 751479, B 21 F 21/00, 1978;

3. Description to the patent of the Russian Federation No. 2076500, IPC 6 B 21 F 23/00, publ. 03/27/97. - prototype;

4. Description to the patent of the Russian Federation No. 2166399, IPC 7 B 21 F 35/00, publ. 05/10/2001.

Claims (5)

1. The wire feed mechanism, including a base with a fixed vertical axis, on which a rotary mechanism is mounted with a bracket and a wire orientation element on the bracket mounted outside the wire packaging, a guide, characterized in that the rotary mechanism is a hollow tube mounted with the possibility of free rotation relative to the fixed vertical axis, the bracket is located on the hollow tube, in the upper part the hollow tube is made with a beveled plane from the location side bracket with an angle of inclination with respect to the vertical axis smaller than the angle between the vertical axis and the direction of orientation of the wire, the orientation element is mounted rigidly on the bracket and is a plate in the hole of which is mounted a cylindrical sleeve with an internal hole with a diameter larger than the diameter of the wire, the orientation element is installed with an inclination of the axis of its sleeve with respect to the horizon, the end of the upper part of the hollow tube, which is fixed with the axis of its sleeve, is equipped with the same orientation element oriented in the direction of the wire feed, the guide is made in the form of a lodgement from the corner, one end of which is installed at the upper end of the hollow tube, the lodgement rib is made with a bend to orient it in the direction of the wire feed, the lodgement is also equipped with the indicated elements of wire orientation fixed on its faces with axis of the bushings, oriented in the direction of orientation of the ribs of the tool tray. 2. The mechanism according to claim 1, characterized in that the bracket is made in the form of a tube and is located perpendicular to its axis of rotation. 3. The mechanism according to claim 1, characterized in that the orientation element is mounted with an inclination of the axis of its sleeve relative to the horizon at 45 °. 4. The orientation element of the wire containing a sleeve with an inner diameter greater than the diameter of the wire, characterized in that the orientation element is a plate with a hole made cut in radius, the sleeve is installed in the hole of the plate, the plate is equipped with a screw installed with the ability to change the geometric size of the cut and holes. 5. The element according to claim 4, characterized in that the sleeve is made of hard alloy.