Drawing machine

FIELD: process engineering.

SUBSTANCE: die-head blocks (1) with drawing dies (2) are mounted along the feed of every wire (3). Pulsating lengthwise strains that reduce drawing friction result from making intermediate gear device consisting of drive crankshaft (5), rods (6) and two frames (7)moving in lengthwise direction and supporting clamps (8) that grip wise in feed direction and let it pass in back direction, and generate pulsating lengthwise strains in said wire two times per one crankshaft revolution. At the same time, load on drum (4) is reduced, said drum making the main drive member of drawing machine.

EFFECT: simplified design.

2 cl, 1 dwg

 

The invention relates to wire drawing machines for multiple multi-line wire drawing.

Known drawing machine drum-type for multiple multi-line wire drawing, including volontariato, the number of which is determined by the ratio of wire drawing, in which is installed at the portage on the number of threads simultaneously processed wire. Between adjacent volonterally is common for all threads intermediate the traction device of the drum type, working with slide wire (SU 1532111, VS 1/02, publ. 1989).

The closest analogue is drawing machine for multiple multi-line wire drawing, including volontariato on the number of consecutive operations of the lug with installed portages on the number of threads and the intermediate traction device (EN 2235615, VS 1/02, publ. 2004).

In this drawing machine, intermediate traction device consists of several independent multi-roll belt mechanisms located between volonterally, each mechanism includes a group of drive rollers and group bypass rollers.

An object of the invention is to simplify the design drawing machine by simplifying the intermediate traction device.

This is achieved by drawing m the bus for multiple multi-line wire drawing, including volontariato on the number of consecutive operations of the lug with installed portages on the number of threads and the intermediate traction device according to the invention the intermediate traction device made in the form of two frames that are installed with the possibility of longitudinal reciprocating movement in opposite directions from the drive, as well as clamps for wire installed on the frames in each gap between volonterally interoperable with each wire so that clamp the wire during movement of the frame in the feed direction and freely pass the wire during the return movement. It is advisable to perform intermediate drive traction device in the form of a drive crankshaft connected to the frames by means of rods.

The invention is illustrated in the drawing, which schematically shows the structure of the drawing machine.

Drawing machine includes volontariato 1 with 2 portages, the number of which is determined by the number of sequentially executed operations drawing on this machine, installed in the course of presenting each of the wire 3, and the winding drum 4. Intermediate traction device consists of a drive of the crankshaft 5, the connecting rod 6 and the two frames 7, movable in the longitudinal direction, on which is placed the clamps 8. Terminals R is sporogony between volonterally 1 and have the opportunity to interact with the wire 3 so, that clamp the wire when moving in the feed direction and freely pass in the opposite direction. The clamps can be performed mechanically, for example, as sets of plates arranged inclined and zaklinivayuschey with the direct course (schematically shown in the drawing), or have managed electric or pneumatic servo-mechanisms.

In the process, drawing machine of the crankshaft, rotating, results in movement of the frame 7. When the movement of the frame in the direction of wire feed her clamps 8 grasp the wire and create the tension necessary to ensure drawn in the previous trail. When this frame is moving in the opposite direction, her clips free and freely pass the wire. Thus twice per rotation of the crankshaft in the wire creates pulsating longitudinal tension, which, as determined experimentally, reduce friction lug. At the same time reduces the load on the drum 4, which is the main traction body drawing machine. The total tension in the wire is reduced due to its distribution, and reduced breakage, which significantly improves the reliability and performance when multi-line drawing.

1. Wire drawing machine for multiple multi-line wire drawing, including volontariato by Chi is Lou sequential drawing with installed portages on the number of threads and the intermediate traction device characterized in that the intermediate traction device made in the form of two frames that are installed with the possibility of longitudinal reciprocating movement in opposite directions from the drive, as well as clamps for wire installed on the frames in each gap between volonterally interoperable with each wire so that the wire clamp when moving the frame in the feed direction and freely pass the wire in a reverse movement.

2. Drawing machine according to claim 1, characterized in that the intermediate drive traction device made in the form of a drive crankshaft connected to the frames by means of rods.



 

Same patents:

FIELD: plastic metal working, possibly manufacture of different types of tubes.

SUBSTANCE: apparatus includes draw plate holder in the form of rod with through cavity for mounting draw plate; source of radial ultrasonic oscillations secured to draw plate holder and embracing draw plate. Apparatus is also provided with second source of radial ultrasonic oscillations secured to outer surface of draw plate holder and with second draw plate mounted in cavity of draw plate holder on the same axis as first draw plate. Length of draw plate holder consists of 0.2 -0.45 of length of longitudinal ultrasound wave inside its material. Draw plate holder includes two mutually joined cone portions. Length of source of ultrasonic oscillations consists of 14 - 40% of draw plate holder length. Both draw plates are mounted in such a way that distance between their centers consists of 0.057 - 0.154 of length of longitudinal ultrasound wave in material of holder. Working surface of each source of ultrasonic oscillations has conicity degree corresponding to conicity of outer surface of draw plate holder and it is normalized by means of given mathematical relation. Invention lowers risk of tube rupture due to stabilized drawing effort at stable mode of drawing that is achieved in the result of providing resonance frequency band of apparatus and lowered number of frequency errors for each source of ultrasonic oscillations.

EFFECT: increased yield of apparatus.

7 cl, 4 dwg, 2 ex

Drawing bench // 2270071

FIELD: drawing processes and equipment, namely manufacture of hardware for making wire by drawing.

SUBSTANCE: drawing bench includes housing; arranged in it traction drum with reversing drive; two driven reversing unwinding-winding units with bobbins and draw plate holder. According to invention axes of unwinding-winding units are parallel to axis of traction drum and they are shifted relative to it for providing possibility for crossing by angle 60 - 120° wire branch climbing on drum and wire branch descending from it. Draw plate holder is in the form of tie rod with two rows of seats crossing in pairs by angle 60 - 120° in its cross section. In said seats along their axes draw plates are placed. Tie rod is mounted with possibility of moving on guides in parallel to drum axis and it is provided with means for fixing it in working positions corresponding to alternating matching of axes of draw plates with climbing wire branch. Between said seats in each row there are parallel to seat through openings for descending wire branch.

EFFECT: improved design providing combined in one unit function of draw plate holder and mechanism for automatically changing draw plates.

4 cl, 2 dwg

Drawing bench // 2270071

FIELD: drawing processes and equipment, namely manufacture of hardware for making wire by drawing.

SUBSTANCE: drawing bench includes housing; arranged in it traction drum with reversing drive; two driven reversing unwinding-winding units with bobbins and draw plate holder. According to invention axes of unwinding-winding units are parallel to axis of traction drum and they are shifted relative to it for providing possibility for crossing by angle 60 - 120° wire branch climbing on drum and wire branch descending from it. Draw plate holder is in the form of tie rod with two rows of seats crossing in pairs by angle 60 - 120° in its cross section. In said seats along their axes draw plates are placed. Tie rod is mounted with possibility of moving on guides in parallel to drum axis and it is provided with means for fixing it in working positions corresponding to alternating matching of axes of draw plates with climbing wire branch. Between said seats in each row there are parallel to seat through openings for descending wire branch.

EFFECT: improved design providing combined in one unit function of draw plate holder and mechanism for automatically changing draw plates.

4 cl, 2 dwg

FIELD: plastic metal working, possibly manufacture of different types of tubes.

SUBSTANCE: apparatus includes draw plate holder in the form of rod with through cavity for mounting draw plate; source of radial ultrasonic oscillations secured to draw plate holder and embracing draw plate. Apparatus is also provided with second source of radial ultrasonic oscillations secured to outer surface of draw plate holder and with second draw plate mounted in cavity of draw plate holder on the same axis as first draw plate. Length of draw plate holder consists of 0.2 -0.45 of length of longitudinal ultrasound wave inside its material. Draw plate holder includes two mutually joined cone portions. Length of source of ultrasonic oscillations consists of 14 - 40% of draw plate holder length. Both draw plates are mounted in such a way that distance between their centers consists of 0.057 - 0.154 of length of longitudinal ultrasound wave in material of holder. Working surface of each source of ultrasonic oscillations has conicity degree corresponding to conicity of outer surface of draw plate holder and it is normalized by means of given mathematical relation. Invention lowers risk of tube rupture due to stabilized drawing effort at stable mode of drawing that is achieved in the result of providing resonance frequency band of apparatus and lowered number of frequency errors for each source of ultrasonic oscillations.

EFFECT: increased yield of apparatus.

7 cl, 4 dwg, 2 ex

Drawing machine // 2385195

FIELD: process engineering.

SUBSTANCE: die-head blocks (1) with drawing dies (2) are mounted along the feed of every wire (3). Pulsating lengthwise strains that reduce drawing friction result from making intermediate gear device consisting of drive crankshaft (5), rods (6) and two frames (7)moving in lengthwise direction and supporting clamps (8) that grip wise in feed direction and let it pass in back direction, and generate pulsating lengthwise strains in said wire two times per one crankshaft revolution. At the same time, load on drum (4) is reduced, said drum making the main drive member of drawing machine.

EFFECT: simplified design.

2 cl, 1 dwg

Intermediate drive // 2385196

FIELD: process engineering.

SUBSTANCE: proposed device comprises two sets of drive elements, arranged at regular intervals so that elements of one set face gaps between elements of another set. Pulsating lengthwise strains in wire are generated per one revolution of the drive thanks to that the base moving lengthwise accommodates the first set of said drive elements and bell crank hinged thereto. Second set of drive elements is arranged on first arm of bell crank. Second arm of said bell crank is furnished with inertia load and arranged across feed direction so that delay of inertia element fitted thereon, when drive elements move in feed direction, makes sets of drive elements approach. Inertia element is arranged on second arm to move and be adjusted thereon. Above described drive of aforesaid sets of drive elements cab reciprocate.

EFFECT: simplified design.

3 dwg

FIELD: process engineering.

SUBSTANCE: invention relates to metal forming and may be used in making semis or rods and wire with ultra fine structure. Proposed method comprises deformation of long metal by drawing via two aligned and fixed tape dies with extra shearing by simultaneous alternating bending and twisting about metal lengthwise axis. Note here that metal axial speed and that of its rotation in area between fibers are kept constant.

EFFECT: expanded processing performances, higher physical properties.

1 dwg, 1 tbl

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