DD218852B5 - ROTATING TOOLS FOR QUICK-WHEEL ROLLING WIRE - Google Patents

Description

For this 3 pages drawings

Field of application of the invention

The invention relates to a rotary cropping shear for schneilaufenden wire rod which cuts in high-performance wire rolling mills from the finish-rolled wire the ineligible start and end pieces and in which the rolling stock is guided by a engaging in a guide caliber pivot tube forcibly 'by the cutter heads and the Schopfenden and Gutader enter a downstream Austaufteil with two separate channels.

Characteristic of the known technical solutions

Rotary wire cutters with cantilevered cutter heads and continuously rotating knives, where the wire rod is brought into the knife area by lateral movement and separated perpendicular to the rod axis, according to DD-WP129127, are in 4 * r position, wire rod of 5.5mm 0 at speeds around 50m / s to cut.

The wire cutters and the scissors developed on this prototype in the h-DD-WP 129127, presented in the invention descriptions DD-WP145237, DD-WP 156048, DD-WP 157854, DE-OS 3237314.7, cause the cutting operation to occur at the point of separation a Walzaderstück pushed down through the upper blade and the other Waladader piece is lifted by the lower blade.

The separation of Schopfstück or loader in the outlet part and the necessary lateral movement, however, takes place in the horizontal plane. This horizontal separation can cause the wire tip subsequent to the interface runs onto the tip of the deflector movable in the outlet part and this leads to disturbances in the Watzaderlauf.

Object of the invention

The aim of the invention is to avoid disturbances in the rolling line by the separating cut and to increase the operational reliability of cropping shear of the type mentioned.

Explanation of the essence of the invention

The invention has for its object to make the cutting process between the rotating cutter heads and the guiding process in the subsequent casserole so that the necessary components of movement in the cutter heads and in the outlet part are in one direction.

According to the invention, the object is achieved in that in the cutting plane of the cutter heads, starting from about the middle knife breast area opposite knife back, the cutter head diameter increases and preferably expires at the level of the knife edge. For the purpose of straight roll rolling in the field of wire cutters, the scrap and good caliber are circular in diameter, but differentiated, formed.

Another feature of the invention is that the scrap and good caliber are provided on the outside with a board.

embodiment

The invention will be explained in more detail with reference to an exemplary embodiment. Show it

Fig. 1: section through the cutter heads before the Schopfvorgang

Fig. 2: section through the cutter heads before the Schopfvorgang in the rolling stock plane

Fig. 3: section through the cutter heads during Schopfvorgang

Fig. 4: section through the cutter heads during Schopfvorgang in the rolling stock plane

Fig. 5: section through the cutter heads after the Schopfvorgang

Fig. 6: section through the cutter heads after the Schopfvorgang in the rolling stock plane

Fig. 7: position of the incoming Walzgutspitze in the outlet part and

Fig. 8: the guideway for the pivot tube in the sliding block.

1 and 2 show the position of rolling stock 1, pivot tube 2, upper cutter head 3, lower cutter head 4 and outlet part 5 before the dicing of the rolling stock. The mouthpiece of the pivot tube 2 is supported in a sliding block 6. The outer diameter of the upper and lower cutter head 3,4 have in the wire running planes, d. H. in the calibers, before the cut, during the cut and after the cut, different or variable diameters, whereby there is always a guide hole 7 appropriate between the cutter heads for the rolling wire section. When scooping the Walzaderspitze be formed by the walls of the outlet part 5 and the horizontal deflector 8 of the scrap guide channel 9 and the Gutaderführungskanal 10.

In Figures 3 and 4, the same assemblies at the moment of severing of the rolling stock 1 by the upper blade 11 and lower blade 12 are shown. The location of the Sch rottspitze and the loader to the modules is shown in Figs. 5 and 6. The position of the incoming Walzgutspitze in the outlet part 5 is shown in FIG. 7. FIG. 8 shows the guide track 13 for the pivoting tube 2 in the sliding block 6.

The operation of the wire cutter is as follows: The rolling stock 1 passes through the gimbal-mounted and pneumatically movable pivot tube 2, in its lowest position in the sliding block 6, as shown in Fig. 8. The wire running plane corresponds to the specified section B ₁ -B ₁ in Fig. 1. Here upper cutter head 3 pointing the maximum radius R ₀₁ and the lower cutter head 4 to the minimum radius Rui. The rolling needle tip moves in a straight line through the pivoting tube 2 and into the guide opening 7 formed by the cutter heads and enters the scrap-conveying channel 9 of the outlet part 5 (FIG. 2). By operating a pneumatic cylinder acting on the pivot tube 2, the pivot tube 2 is moved in a known manner in the guide track 13 of the sliding block 6 (Figure 8), wherein at the same time via a arranged on the pivot tube lever bushing a guide element for synchronizing the transverse movement of the rolling stock up to the blades - snaps into guide caliber 14 of the upper cutter head. If the rolling stock 1 during the pivoting operation of the pivot tube 2 in the plane of action of upper blade 11 and lower blade 12 - which corresponds to the section B ₂ -B ₂ in Fig. 3 - the scraping end running away (Schopfstück) is pressed by the leading upper blade 11 during the dicing process down and the subsequent Gutaderspitze raised by the trailing lower blade 12. Thus, the movement of the scrap piece in the downwardly facing scrap guide channel 9 of the outlet part 5 and the movement of the following loader above the deflector 8 in the G utaderkanal 10 is supported. Due to the rotation of the cutter heads, a further increase in the Good vein tip due to the maximum diameter R _U 3 of the lower cutter head 4 in this section of the wire running plane takes place. After the dicing process, the pivot tube 2 enters the upper end position of the guide track 13 in the sliding block 6. In this position, the rolling load - as shown in FIGS. 5 and 6 - passes through the assemblies pivot tube 2, cutter heads and outlet part 5 completely straight. In the area of the cutter heads, in this position the guide opening 7 is formed by the minimum diameter R ₀ 3 of the upper cutter head 3 and the maximum diameter R _{U3 of} the lower cutter head 4.

Claims (3)

1. Rotating cropping shear for high-speed wire rod, which in high-performance wire mills from the finished rolled wire cuts the non-quality start and end pieces and has two counter-rotating cutter heads with thread-like caliber grooves, achsfluchtend at the top cutter head a rotationally symmetrical guide body and scherkopfeinlaufseitig a swivel tube and scherkopfauslaufseitig an outlet part are arranged with two separate channels, characterized in that in the cutting plane of the cutter heads, starting approximately from the middle knife face to the opposite knife back, the cutter head diameter increases and expires at the level of the knife edge. 2. Rotating crop shear according to item 1, characterized in that the scrap and good caliber circular, but differentiated to each other, are formed. 3. Rotating crop shear according to item 1 and 2, characterized in that the scrap and good caliber are provided on the outside with a board.