RU2429931C1 - Semi-automatic machine for bending of wire items - Google Patents

Abstract

FIELD: metallurgy.

SUBSTANCE: semi-automatic machine includes base on which two opposite located bending modules are located. The above modules include pneumatic turning device and hollow shafts with driven gears fixed on them and engaged with driving gears of drive shafts of pneumatic turning devices, and pushers installed in hollow shafts and connected to pneumatic cylinders of their back-and-forth movement, bending mechanisms and workpiece pressure mechanism. Semi-automatic machine is equipped with composite template the profile of which is equivalent to the profile of the item; central part is mounted on one of bending modules with possibility of vertical and horizontal adjustments, and side parts are fixed on ends of pushers, which are opposite to the above pneumatic cylinders; at that, one of the bending modules is installed so that its movement can be adjusted in order to change the centre-to-centre distance between axes of bending modules; bending mechanisms are mounted on bending modules and made in the form of face-plates fixed on the above driven gears, guides, sliding members, which are connected to pneumatic cylinders of their movement, and bending rollers mounted on sliding members.

EFFECT: enlarging manufacturing capabilities and the range of produced items.

3 cl, 2 dwg

Description

-трапецеобразную, при этом длина ветвей больше ширины полки и с большим радиусом кривизны самой полки, как у эллипсообразной детали, а также с большими радиусами сопряжения полки с ветвями. Большая номенклатура таких изделий используется в автотранспортной промышленности. При их производстве, в большинстве случаев, используется труд незрячих исполнителей, а проблема обеспечения их рабочими местами является одной из важнейших социальных проблем, ввиду того, что эта категория тружеников выпала из под патронажной опеки государства.The invention relates to techniques for manufacturing a wide range of flexible parts from wire blanks, which have various shapes and sizes. For example, ∩-ellipsoidal with branches tucked inward, U-shaped,

-tape-shaped, with the length of the branches greater than the width of the shelf and with a large radius of curvature of the shelf itself, as in an ellipse-shaped part, as well as with large radii of conjugation between the shelf and the branches. A large range of such products is used in the automotive industry. In their production, in most cases, the labor of blind performers is used, and the problem of providing them with jobs is one of the most important social problems, due to the fact that this category of workers fell out of the state's patronage.

At present, car factories use complex multi-position universal bending machines for this purpose, but their technological capabilities are realized by 20-30%, taking into account the costs of their readjustment and the high qualifications of the adjusters (3, 4).

A device is known for cutting a measured workpiece and bending the ears at the ends of a cut workpiece, comprising a wire feed mechanism, a cutting mechanism, a drum with guide grooves for holding the workpiece and ejecting the finished product, a rack-and-pinion gear interconnected with a rotary bending mandrel and a rocker drive, and cam drive turning the drum (1).

This device has a complex structure and limited technological capabilities, as it is intended only for bending the ears, without the possibility of further bending and only one length.

The closest technical solution adopted for the prototype is a device for bending wire products, containing a base, bending modules mounted on it with hollow shafts, driven gears attached to one end, and bending rollers eccentrically fixed, rods placed inside the shafts, one the ends of which are connected with pneumatic cylinders, and the support rollers are fixed on the others. A pneumatic rotator with a drive gear engaged with a driven gear is mounted on each module. The clamping mechanism is placed between the bending modules and is made in the form of a bracket on which the clamping fixed and movable jaws are mounted, while the movable jaw is pivotally mounted on the axis and connected via a rod to the pneumatic actuator (2).

-трапецеобразную формы.A disadvantage of the known device adopted for the prototype is that it is impossible to manufacture products with a large radius of curvature of the central section of the product and mated with lateral curved branches with a large radius of bending and intersecting at an angle to the middle of the shelf of the central section during the process of bending the ends of the branches which, after the end of the process, due to springing of the material, have acquired in the finished product a ∩-ellipsoidal, U-shaped or

- trapezoidal form.

The basis of the present invention is the task - by expanding the technological capabilities of the device to increase the range of manufactured products. For this purpose, the bending modules are placed not on the sides of the clamping mechanism, but on the contrary, the clamping mechanism has also changed, its location, the mechanism of folding the side branches of the product has been structurally solved differently.

In this connection, the task in the created semiautomatic device for bending wire products of various shapes is solved by the use of well-known elements: the base, two opposed bending modules mounted on it, including pneumatic rotators and hollow shafts with driven gears fixed on them, engaged with pinion gears pneumatic rotary drive shafts, pushers installed in hollow shafts, connected with pneumatic cylinders of their reciprocating movement, and workpiece clamping mechanism. New in the invention is that it is equipped with a composite template, the profile of which is adequate to the profile of the product, the central part is mounted on one of the bending modules with the possibility of vertical and horizontal adjustments, and the side parts are mounted on the ends of the pushers opposite to the mentioned pneumatic cylinders, while one of the bending modules installed with the possibility of adjusting movement to change the center-to-center distance between the axes of the bending modules, the bending mechanisms are mounted on the bending modules and They are filled in the form of faceplates rigidly fixed on the said driven gears, guides, creepers connected with the pneumatic cylinders of their movement, and bending rollers mounted on the creepers.

Another feature of the invention is that the aforementioned clamping mechanism of the workpiece is made in the form of a bracket mounted on one of the bending modules, a pneumatic cylinder mounted on it, the rod of which is pivotally connected to the L-shaped lever through a rod, one end of which is pivotally mounted on the bracket, and on the other At its end, coverage is fixed, while the semiautomatic device is equipped with a piston-type damper.

Such a constructive solution made it possible to mechanize the manufacturing process of many of the automotive industry parts that have a ∩-shaped, similar to an open ellipse, that is, the middle part with a large radius of curvature and with a large bending radius at the interface with the side branches. The problem was that it was necessary to bend long lateral branches intersecting the middle part of the molded product with their peripheral ends. When using a solid copier when bending the side branch, the latter rested against it. Thus, the template itself is necessary for molding and at the same time it interferes. There are two mutually exclusive factors. The solution was found in the form of a composite template, when in the process of bending one end the other side part of the template was removed from the bending zone without interfering with the peripheral end of the branch.

The invention is illustrated by drawings: where in Fig.1 is a side view of a semiautomatic device; figure 2 is a section along aa in figure 1; figure 3 is a section along bb in figure 1; figure 4 is a section along G-D (rotated) in figure 1, figure 5 is a view along arrow B in figure 2

The semiautomatic device contains a base 1, on which two opposite bending modules 2 and 3 are mounted, including pneumatic rotators 4 and 5, hollow shafts 7 and 8 are mounted on bearings 6 in the upper part of the modules, drive shafts 9 and 10 are connected in pneumatic rotators 4 and 5, connected by means of the driving gears 11 and 12 and driven gears 13 and 14, in the hollow shafts 7 and 8 there are pushers 15 and 16 connected to their reciprocating hydraulic cylinders 17 and 18, lateral h are fixed to the ends of the pushers 15 and 16 opposite to the pneumatic cylinders The parts of the template 19 and 20. In the upper part of one of the modules, for example, left 2, the central 21 part of the template 22 is mounted with the possibility of its vertical and horizontal adjustment, while the central 21 part has an arcuate profile with a large radius of curvature adequate to the product profile. In general, the design of assembly template 22 is shown in FIG. 5. On the gears 13 and 14, the faceplates 23 and 24 with the guides 25 and the sliders 26 and 27 connected to the pneumatic cylinders 28 and 29 are rigidly fixed. The bending rollers 30 and 31 are mounted on the sliders 26 and 27. The faceplates 23 and 24, the sliders 26 and 27, are bending the rollers 30 and 31 and the pneumatic cylinders 28 and 29 form the bending mechanisms 32 and 33. The workpiece clamp mechanism 34 is made in the form of an arm 35 fixed to one of the modules, a pneumatic cylinder 36 mounted on it, the rod 37 of which is pivotally connected to the L-shaped lever through the rod 38 39, one end of which is pivotally mounted on the bracket 35, and the coverage 40 is fixed on the other, pressing the surface 41 of which is adequate to the mating surface 42 of the central part of the template 21. On the shafts 9 and 10 are fixed drums 43 and 44 with cams acting on the pneumatic devices of the pneumatic system. The drums 43 and 44 interact with their protrusions with dampers 45. On the basis of 1, a stop mechanism 46 of the workpiece 47 is installed and has the ability to adjust along the length of the workpiece. One of the bending modules, for example 2, is mounted with the possibility of adjusting movement to adjust the center-to-center distance between the axes of the bending modules by means of a screw 48. The rolling angle of the rollers 30 and 31 is controlled by the pneumatic turn, for which their rods have tie rods that control the length of the rod, or other known constructive solution.

The semiautomatic device works as follows.

In the initial position, one of the side parts, for example 19, is removed from the junction of the template 22. The blank 47 is placed on the central 21 part of the template 22 and fixed in length on the stop 46, after which the operator enters the semiautomatic device on the control panel (not shown) in the “automatic” position ”And includes the machine. The pneumatic cylinder 36 through the rod 37, the rod 38, the lever 39, spanning 40, the workpiece is pressed against the central part 21. Next, the module 2 comes into operation, its cylinder 28 lowers the sprocket 26 with the roller 30 to contact the workpiece 47. The pneumatic rotator 5 drives the gear 12 and 14 and the faceplate 24 clockwise, rolling around the roller 30 and bending the right end of the workpiece around the right side portion 20 of the mandrel. After completion of this technological transition, the bending part 20 of the mandrel is removed from the joint. Module 3 enters into operation in the same way and, by means of hydraulic cylinder 18, the pusher 15 pushes the left side part 19 of the mandrel to the front position, the pneumatic cylinder 29 lowers the sprocket 27 until the roller 31 contacts the left branch of the workpiece 47. The pneumatic rotator 4 comes into operation, and rotates it through gears 11 and 13 faceplate 23 counterclockwise, bending around the workpiece on the left side part 19 of the template. The finished product has taken the form, as shown in figure 5. The pneumatic cylinder 29 returns the roller 31 to its original position, turning the faceplate 25 clockwise, the pneumatic rotator 4 returns to its original position, the hydraulic cylinder 18 removes part 19 of the template 21 from the joint, the pneumatic cylinder 36 releases the finished product, raising the coverage 40. When the parts 19 and 21 are returned, the drums 43 and 44 with their protrusions abut against dampers 45, damping the inertia of rotation of the moving parts. The cycle is completed, the part is removed.

-трапецеобразную, когда ветви раздвинуты.After the bending process, the side branches are partially straightened due to the spring of the material, so that the finished product takes one of the forms, for example, ∩-elliptical when the branches are bent inward, or U-shaped when the branches are parallel, or

-tape-like when the branches are apart.

The claimed semiautomatic device is manufactured and operates at the enterprise of the Bataysk Production Association "Elektrosvet VOS". One of the issues of mechanization of manufacturing a complex product was solved and allowed workers with visual impairments to work on a semiautomatic device.

Information sources

1. A.S. USSR No. 604612, B21F 1/00, 11/23/1976 (analogue).

2. RF patent No. 2365457, B21F 1/00, 01/24/2008 (prototype).

3. N.A. Fedorov and others. Universal bending machines. M .: Mashgiz, 1961, pp. 6-11 (informative).

4. G.N. and V.G. Rovinsky. Universal bending machines driven by a central gear. M .: Mashgiz, 1961 (informative).

Claims (3)

1. A semiautomatic device for bending wire products, comprising a base on which two opposed bending modules are mounted, including pneumatic rotators and hollow shafts with driven gears fixed to them, engaged with driving gears of the pneumatic rotary drive shafts, and pushers mounted in hollow shafts and connected with pneumatic cylinders of their reciprocating movement, bending mechanisms and the clamping mechanism of the workpiece, characterized in that it is equipped with a composite template, the profile of which is adequate the profile of the product, the central part is mounted on one of the bending modules with the possibility of vertical and horizontal adjustments, and the side parts are fixed at the ends of the pushers opposite to the mentioned pneumatic cylinders, while one of the bending modules is mounted with the possibility of adjustment movement to change the center-to-center distance between the axes of the bending modules the bending mechanisms are mounted on bending modules and are made in the form of faceplates rigidly fixed to the said driven gears, guides, floor ears, pneumatic cylinders associated with their movement, and folding rollers mounted on polzushkah. 2. The semiautomatic device according to claim 1, characterized in that the said workpiece clamping mechanism is made in the form of a bracket mounted on one of the bending modules, a pneumatic cylinder mounted on it, the rod of which is pivotally connected to the L-shaped lever through the rod, one end of which is pivotally mounted on bracket, and at the other end is fixed coverage. 3. The semiautomatic device according to claim 1, characterized in that it is equipped with a piston type damper.

Images