Multiple magazine type drawing bench

FIELD: wire production by drawing.

SUBSTANCE: drawing bench includes draw plates and traction drums having in their shafts pinions driven by common motor. According to invention controlled clutches are mounted in shafts. Drums are arranged in common housing along path in the form of flat helix in center of which gear wheel is mounted. Said gear wheel is joined with all pinions at relation of tooth number of pinion of each previous and next drum equal to normalized drawing factor in draw plate of next drum. Drums are made with possibility of adjusting their diameter due to rotation mounting in shaft of each drum screw with left-hand and right-hand threads. Two cone sleeves mounted on said thread have central openings respectively with left-hand and right-hand threads. Said sleeves have cone surfaces turned one to other. Working surface of drum is formed by means of telescopic cleats secured to shaft and arranged between two flanges. Inner surfaces of said cleats have two inclined portions with guides engaged with reciprocal grooves in cone surfaces of both sleeves.

EFFECT: lowered mass and size, simplified design and tuning of drawing bench.

5 dwg, 3 ex

 

The present invention relates to the field of drawing production and can be used for the manufacture of wire.

Closest to the invention is a multiple wire drawing mill store type, containing drawing dies and traction drums driven from a common motor gears on their shafts and linear arrangement of the drums (see, for example, Mbhalati. The guide wire drawer, M: metallurgy, 1993, page 195). The desired ratio of the speeds of the drums to support the set of reductions (extracts) is produced in this mill by selection and installation of changeable gears.

The disadvantages of this mill are large size in length and the complexity of design and the complexity of the configuration due to the availability of replacement wheels. In addition, this camp does not allow you to adjust the kinematics in the process of drawing or uneven wear plate, which is almost always. Therefore, to compensate for such wear, it is necessary to lengthen the reels to increase the supply of wire on them.

The objective of the invention is to reduce the size and weight of the mill, improving performance and manufacturability by simplifying its design and installation.

The task is achieved by the fact that multiple drawing machine shop type, containing drawing dies and a pull of the trigger is haunted reels are driven from a common motor gears on their shafts, in accordance with the invention, the shafts are driven coupling clutch, the reel is placed in a common housing along the trajectory of a flat spiral, the center of which is mounted a gear wheel connected with all the gears with a ratio of the number of gear teeth of each of the previous and subsequent reels, equal regulatory drawing ratio in the trench next to the drum, while the drums are made with adjustable diameter by placing on the shaft of each drum can be rotated screw with right and left thread running two conical sleeve with a Central hole, respectively, with right and left threads, a tapered surface which is directed towards each the other, while the working surface of the drum is formed located between the two flanges, attached to the shaft, sliding bars, the inner surface of which has two sloping site with guides, interacting with the slots of the response form on the conical surfaces of the two sleeves.

The reel position in a common housing along the trajectory of a flat spiral reduces the size of the mill several times, when the condition specified ratio of the number of teeth of the drum gear, you can set all the drums needed speed one is rutnam wheel, that reduces the required amount of gear and simplifies the design of the mill.

The execution of the drawing machine with reels of this design, which allows you to adjust their working diameter and installation on the shafts of the drums is driven coupling clutches makes it possible, firstly, to quickly and easily configure the kinematic drawing, in case of their non-normative, secondly, also to quickly and easily adjust them depending on the actual wear plate. Adjustment in this case does not require a long stop mill and Assembly works on replacement of gears, it can be performed without interrupting the cycle of drawing one Bay. To enable regulation of the diameters of the drums their design provides for placement on the shaft of each drum can be rotated screw with right and left threads, installation on said screw two conical bushings with Central holes respectively with right and left threads, a tapered surface which are directed towards each other, while the working surface of the drum is formed located between the two flanges, attached to the shaft, sliding bars, the inner surface of which has two sloping site with guides, interacting with the slots of the response form on the conical surfaces of the two sleeves./p>

One of the flanges, namely the flange, spaced from the drive gear mounted on the shaft firmly and is associated with a different flange studs passing through holes in the cone bushings. Regulation of the working diameter of the drum is produced by turning the screw in one direction or another, which causes simultaneous movement of the conical sleeve and the radial movement of the slats, leading to their spread or converge. The torque is transmitted from the shaft of the drum, through rigidly secured on the flange and studs, the other flange, tapered bushings, and from them, through the guide strips, cooperating with the slots of the sleeves themselves straps.

To stop the drum at the time of adjusting the diameter design provides controlled coupling sleeve mounted on its shaft.

The proposed mill is illustrated by illustrations, where shows:

figure 1 is a top view,

figure 2 is a kinematic diagram

figure 3 is a section AA of figure 2 (on the axis of the drum),

figure 4 - section BB,

figure 5 - view From figure 3

The mill has the following device.

In case 1 round shape placed supports, e.g. six shaft 2 carrying the traction drum 3. Each shaft 2 is driven freely mounted thereon the gear 4, and a solenoid controlled clutch coupling 5. The ratio of the numbers of gear teeth 4 of each of the previous is his and subsequent reels is equal to the magnitude of the extrusion billet, implemented in portage subsequent drum.

This value extraction is selected from standards developed on the basis of the practice of drawing to be processed material.

All drums 3 are placed around the Central gear 6 and the gear 4 is coupled with the latter, so that the axis of rotation of the drums are arranged along a curve having the form of a flat spiral. The Central wheel 6 is driven by an electric motor 7 through gears 8, 9, 10, placed in the same housing 1. On the upper surface of the housing is fixed to rotate volontariato 11 portages and the guide roller 12. Ibid fixed rack with rollers 13.

Traction drums have the following structure (see figure 3, 4, 5)

On the shaft 2 is rigidly fixed to the flange 14 which is connected by pins 15 with the flange 16. The pins 15 can move two tapered sleeve 17, one of which has a Central opening with right-hand thread and the other with the left.

Its threaded sleeve in contact with the screw 18, sitting freely on the shaft 2 and having respectively right and left hand thread. Tapered surfaces of the sleeves 17 are directed toward each other and provided with guide slots, which include guides appropriate form, performed on the inclined portions of the inner surface of each of the strap 19. The combination of the external surface the values of these strips forms the working surface of the traction drum. At the turn of the screw 18 of the sleeve 17 synchronously moved in opposite directions, which leads to the radial movement of the slats (convergence or spread) and, thus, a change in the diameter of the drum.

On the upper end of the flange 16 can rotate the ring 20 of the puller wire roller 21. In addition, the drum has a built-in mechanism for clamping the end of the stretch of wire, consisting of a ring 22 is inserted in him radial crumbs 23 in contact with the inclined grooves made in the flange 16. Under the action of spring 24 acting on crackers 23, the ring 22 is rotated on the flange 16 and is moved to its end along the axis. The space between the ends of the flange 16 and the ring 22 forms an annular clamping gap. Drawing camp operates as follows.

Example 1. If the diameters of the working fiber holes regulatory working diameters of all of the traction drum with screws 18 are governed by the same amount.

Pre-tipped processed wire is passed through the first fibrous. Turning the ring 22, open clamping ring slit of the first drum, introducing into it the sharp end of the wire, release the ring 22.

It is under the action of spring 24 rotates with the axial offset and pre-clamps the end of the drum.

Then include on the " 7 and the sleeve 5 of the first drum and produce a drawing of the set up on the drum 18÷ 20 turns of wire. After that, the engine is stopped, the free end of the wire from the clip is passed through the roller 21 of the stripper 20 through the roller 13 and pre-making, through the guide roller 12 and the second fibrous - clamp in the second traction drum. Then turn on the engine and clutch the first two reels and drag the wire to a set of 18÷20 turns on the second drum. The process is repeated until the implementation of charging all of the drums, after which the mill operates continuously till complete processing of the entire Bay of the workpiece.

Example 2. In case of discrepancy of the working diameters of the holes of one or more fiber normative, kinematics mill may not provide the required ratio of the speeds of the drawing with the same working diameter of the traction drum. Avoid overrun (underrun) drums, as well as breaks in the wire prior to drawing to adjust the diameters of the drums to provide the required ratio of the speeds of the drawing in accordance with the required diameters of the holes of the fiber. For example, consider setting 6-fold mill, intended for processing workpieces with a diameter of 3.2 mm in wire diameter of 1.6 mm Normative fiber diameters are a number: 2,8-2,5-2,2-2,0-1,8-1,6 with the drawing ratio μ=1,306-1,254-1,29-1,21-1,234-1,265.

Relevant is the following these hoods speed of rotation of the drums, with the same diameter of the latter, provided the numbers of teeth of the drum gear drawing mill.

Assume you are at this mill to process the wire diameter of 4 mm in diameter 2 mm.

The fiber diameters: 3,5-3,2-2,8-2,5-2,2-2

The drawing ratio required: 1,306-1,196-1,306-1,254-1,291-1,21 the kinematics of the machine: - 1,306-1,254-1,29-1,21-1,234-1,265.

Define the diameters of the drums needed to ensure the required hoods.

It is obvious that the diameter of the 1thdrum is equal to the nominal DN, as required and available at camp hood match.

The diameter of the second drum

The diameter of the third reel

etc.

Get the number of required diameters of reels:

DN - 0,953 DN - 1,012 DN - 1,036 Day - At 1,046 DN - 0,956 Nam adjustment range ±5% from Nam.

In accordance with the obtained values adjusts the diameters of the drums.

The proposed design allows adjustment range ±15%, which is sufficient for the purposes of the practice.

Example 3. In the case of uneven wear plate (which is almost always, as the strength of fiber in km processed wire does not practically depend on their diameter and the speed of drawing is proportional to the hood).

In this case, in the process drawing the stock wire from the 1ththe last drum will increase. To avoid excessive decrease (increase) in stock of wire on the reel, it is necessary to stop the mill and adjust the drums, namely, in the case of overflow to reduce their diameters, and in the event devastation is to increase.

Thus, the process of setting up and adjusting the mill is not associated with the selection and installation of changeable gears, which reduces auxiliary setup time, simplifies the design of the mill (in the above example, the mill contains only 10 gears on 6 reels). In addition, adjustment of the diameters of the drums allows for more precise kinematic extraction than is achievable with changeable gears. This reduces the necessary supply of wire on the reel, i.e. to reduce their length.

The convenience and speed of adjustment of the kinematic hood with adjustment of the diameters of the drums allow you to do this even without interrupting the loop is a coil of wire which in known constructions mills impossible.

The proposed layout of the multiple wire drawing mill with the location of the drums around the Central drive wheel in a flat spiral, reduces its dimensions and required production area several times.

Listed design features stated drawing mill to ensure Ecevit improving its performance and manufacturability through design simplification and adjustment, in combination with the reduction of size and weight.

Multiple drawing camp store type, containing drawing dies and traction drums driven from a common motor gears on their shafts, characterized in that the shafts are driven coupling clutch, the reel is placed in a common housing along the trajectory of a flat spiral, the center of which is mounted a gear wheel connected with all the gears with a ratio of the number of gear teeth of each of the previous and subsequent reels, equal regulatory drawing ratio in the trench next to the drum, while the drums are made with adjustable diameter by placing on the shaft of each drum can be rotated screw with right and left threads on which has two conical sleeve with a Central hole, respectively, with right and left threads, a tapered surface which are directed towards each other, while the working surface of the drum is formed located between the two flanges, attached to the shaft, sliding bars, the inner surface of which has two sloping site with guides, interacting with the slots of the response form on the conical surfaces of the two sleeves.



 

Same patents:

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Drawing machine // 2254948

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3 cl, 5 dwg

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9 cl, 4 dwg, 6 ex

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2 cl, 3 ex

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18 cl, 4 dwg

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12 cl, 8 dwg

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2 cl, 3 ex

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9 cl, 4 dwg, 6 ex

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12 cl, 23 dwg

Drawing machine // 2254948

FIELD: equipment for multiple multi-strand drawing of wire.

SUBSTANCE: drawing machine includes die holders whose number is equal to that of successive drawing operations and number of drawing dies equal to that of drawing strands; pulling apparatuses arranged between drawing die holders and rotation drive unit. Drawing dies are mounted with possibility of rotation they are combined to kinematic groups through gearing. One drawing die of group is joined with rotation drive unit. Gear wheel of gearing includes set of alternating working discs with peripheral teeth and intermediate discs; unit for compressing set of discs. Diameter of intermediate disc of one gear wheel of each pair of gear wheels exceeds diameter of working disc. Diameter of intermediate disc of other gear wheel is less than said diameter. Heat insulation gaskets are periodically placed between discs of disc set. Gearing is multi-step one; number of working discs of set is reduced for next steps as they are spaced from rotation drive unit.

EFFECT: lowered friction at multi-strand drawing, increased useful life period of drawing dies, reduced degree of wire tearing.

3 cl, 5 dwg

FIELD: metallurgy, machine engineering, namely processes for making articles with metallic coating.

SUBSTANCE: method comprises steps of preliminarily applying uniform metallic coating at least upon outer surface of blank; after application of coating plastically deforming coated blank by rolling or drawing till predetermined thickness value. Thickness of applied coating exceeds predetermined value in proportion to elongation factor of coated blank; proportionality factor is equal to relation of perimeters of cross section of article and blank.

EFFECT: possibility for making articles with geometry parameter, namely thickness and surface area of coating equal to predetermined ones.

FIELD: metal working.

SUBSTANCE: proposed method of production of wire from coiled material includes butt welding of ends of coils, longitudinal cutting by multirow shears into strips of approximately square section, drawing to render wire round section and sizing of wire to required diameter and winding of ready wire onto multirow spooling machine. According to invention, drawing is carried out periodically by shifting wire drawing die unit opposite to direction of wire feeding and alternatively moving the unit backwards. Winding of ready wire is done between wire drawing operations. Invention decreases breakage and nonuniform winding of wire by multirow spooling machine being simultaneously used as pulling member at drawing.

EFFECT: improved reliability, enlarged range of rolling technologies at production of wire.

9 cl, 5 ex, 1 dwg

FIELD: wire production by drawing, possibly designs of drawing benches.

SUBSTANCE: pulling drum of drawing bench rotatably mounted in axle and having mechanism for automatically clamping wire end has on one end portion of cylindrical surface of drum annular bead and on other end portion of drum it has annular stepped shoulder. Clamping mechanism includes pair of rings successively mounted on step of shoulder. Inner ring is mounted with possibility of motion along step of shoulder and it is provided with drive unit for rotating it relative to outer ring rigidly mounted in direction opposite relative to rotation direction of drum. Said rings are spring-loaded for providing their mutual contact along end inclined protrusions and recesses. At axial movement of inner ring caused by its rotation it is formed annular clamping space between flat end surface of inner ring and end surface of shoulder.

EFFECT: improved design not needing fixation of drum in predetermined angular position for introducing wire into clamping space, possibility for clamping/unclamping wire at rotation of drum.

4 cl, 3 dwg

FIELD: manufacture of jewelry articles, possibly in jewelry industry at making small springs of rod type locks of gold alloys.

SUBSTANCE: method comprises steps of forming wire of gold alloy by deforming during several stages at intermediate annealing procedures between said stages; at last stage of wire forming deforming alloy by drawing it at total reduction degree 65 - 85%; then winding spring of formed wire. In preferable variant of invention last stage of drawing is realized during eight passes at total reduction degree 77.8%. The most effective method of forming springs is realized at using gold of purity degree 585.

EFFECT: enhanced manufacturing effectiveness, improved quality of articles due to their enhanced elastic properties.

3 cl, 1 ex

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