RU2261771C1 - Device for making slots on continuously moving section - Google Patents

Abstract

FIELD: mechanical engineering; plastic metal working.

SUBSTANCE: proposed device contains lower drive shaft installed in two fixed housing on which punch with pack of cutting disks is installed, two movable housing in which two adjusting nuts with screws are mounted, and upper shaft with die in form of pack of disk. Movable housing are made for displacement in vertical plane along two columns installed in fixed housing. Disks of die differ in diameter, with alternation of larger diameter disk and smaller diameter disk. Outer surface of blades of punch cutting disk has cylindrical and conical sectional of corresponding width and tilting of generatrix of cylindrical section at angle to axis of symmetry of cutting disk. Disks with cylindrical outer surface are fitted between cutting disks. Diameter of said disks is less than diameter of cutting disks. Disks of die of smaller diameter are arranged over cutting disks, and disks of die of larger diameter are arranged over disks of punches with cylindrical outer surface.

EFFECT: enlarged operating capabilities owing to changing of shape and size of slots.

3 cl, 1 ex, 10 dwg

Description

The device relates to the field of metal forming and can be used in the manufacture of core products, namely in the manufacture of thermal profiles.

Known device A.S. No. 2117543, B 21 D 47/02, B 21 D 31/02, which is used in the line for the manufacture of expanded metal and contains a cutting device, which is all-wheel drive, consists of two supports, left and right, couplers, a knife block, the drive mechanism and adjust the position of the knives relative to each other in the block. The knife block consists of upper and lower shafts, on each of which knife packs are installed with a width equal to the width of the tape or strip. The adjustment of the position of the package of knives of the upper shaft in a vertical plane relative to the package of knives of the lower shaft is carried out by means of adjustment screws.

The known device for the manufacture of expanded metal mesh cannot provide the production of a thermo-profile of the required shape, namely, the creation of slots in the bottom of the thermo-profile with simultaneous bending of the element (visor) required in the finished profile to ensure deviation of the air flow.

Thermal profiles are used in the construction of load-bearing walls, partitions, floors, floors, roofs, attics. The presence in the thermal profiles of slots with peaks provides circulation of the heat flux, which gives superior thermal insulation performance compared to frames made of continuous thin-sheet profiles.

The problem solved by the invention is to eliminate the disadvantages of the closest analogue.

The problem is solved due to the fact that the device for applying slots on a continuously moving profile is characterized by the presence of a lower drive shaft installed in two stationary housings, on which a punch with a package of cutting discs is fixed, also characterized by the presence of two movable housings in which the upper shaft with a matrix is installed having a pack of disks, moreover, the matrix disks are made of different diameters with alternating a disk of a larger diameter with a disk of a smaller diameter, and the outer surface of the cutting knives the punch disks are made with a cylindrical section, the width of which is from 15 to 21% of the width of the cutting disk, and with a conical section, the generatrix of which is located at an angle of 27-30 ° to the axis of symmetry of the cutting disk, and disks with a cylindrical outer surface are installed between the cutting disks, having a smaller diameter than the cutting disks, the matrix disks of a smaller diameter are located above the cutting disks, and the matrix disks of a larger diameter are located above the punch disks with a cylindrical outer surface.

The width of the disks of the matrix is equal to the width of the cutting disks of the punch.

The conical surfaces of the cutting discs can be oriented in opposite directions relative to the longitudinal axis of the device. At the same time, two vertical columns are installed in the stationary housings of the device, along which the movable housing can be moved by the interaction of the screw fixed by the base in the movable housing and the adjusting nut installed in the bracket connecting the two columns of each stationary housing in the upper part.

The technical result provided by the invention is to reduce labor costs for manufacturing a profile by combining slot cutting and bending the visor, as well as the ability to install the device directly behind a multi-roll forming mill in which the profile is made, reducing energy consumption and ensuring high product quality due to optimization of disk parameters, including cutting discs.

A device for applying slots on a continuously moving profile is illustrated by drawings:

Figure 1 - General view of the device.

In Fig.2 - view A in Fig.1.

Figure 3 is a section aa in figure 1.

Figure 4 is a section bB in figure 2.

Figure 5 is a top view of a thermal profile.

Figure 6 is a section bb in figure 5.

In Fig.7 - node I in Fig.6.

In Fig.8 - the cutting disk of the punch.

In Fig.9 - View B in Fig.8.

Figure 10 - node II in figure 9.

Thermoprofile is made on an automatic line using a multi-stand roll forming mill. On the finished profile of a given size put slots of the calculated parameters for this profile (not violating mechanical strength).

The device comprises a lower drive shaft (drive not shown) shaft 1 on rolling bearings installed in two fixed housings 2, and an upper shaft 3 on rolling bearings mounted on two movable casings 4, four vertical columns 5 mounted two in fixed casings 2, connected by a bracket 6 to each other and two tie rods 7. The movable bodies 4 have screws 8 fixed in them by their base and interacting with the adjusting nuts 9 installed in the brackets 6 for vertical movement of the bodies 4 along the columns 5. Bottom The drive shaft 1 has a punch 10 fixed to the shaft, made in the form of a package of cutting disks 12, alternating with cylindrical disks 11 connected to each other and with a punch with screws 13. The upper shaft 3 has a matrix 14 fixed to the shaft fixedly, which contains a packet from alternating single disks with cylindrical surfaces 16, 17, 15. The cylindrical surfaces of the disks 15, 17 and 11 provide compression of the horizontally moving bottom of the profile 18. All disks 11, 12 of the package are fastened together and with a punch of 10 screws 13.

The device operates as follows.

Prior to the automatic start of the line, the device for applying slots on the continuously moving profile is set up and adjusted. By rotating two nuts 9, relative to the screws 8 and installed in the slats 6, move both movable bodies 4 (the screws 8 are fixed by the base in the movable bodies) along four vertical columns 5 (similar to the principle of adjusting the drive shafts of the roll forming mill) until the calculated working clearance between the disks 11 is established , 15, 17, allowing to tighten the moving plane of the bottom of the thermal profile 18, without violating the continuity of the movement of the profile and the process of cutting cracks. The adjustment of the upper shaft 3 relative to the lower drive 1 is performed in such a way that the cutting disks 12 protrude above the surface of the bottom of the profile 18 by an estimated value of h mm, and the upper smaller diameter of the disk 16 allows, when in contact with the cutting disk 12, to bend the visor 20 of the gap 19 by an estimated value under angle β = 28 ° 4 (angle of sharpening of the cutting disc). The cutting discs 12 are divided by sectors with an angle α = 51 ° 26 into the estimated number of cutting edges, the horizontal section of the cutting disc l = 1 mm protects the cutting edge from chipping during cutting, the thickness of the cutting disc is δ = 5.5 mm. The location of the cutting discs 12 of the punch 10 on the drive shaft 1 towards each other ensures cutting of slots 19 on the bottom of the profile 18, which is continuously moved from the profile bending mill, so that the surfaces 20 are simultaneously bent by the cutting discs at an angle almost equal to the angle β of the grinding of the disc. In the finished thermo-profile, the surface 20 has the form of a visor located above the slit 19, which makes it possible to deflect the warm air flow and lengthen its circulation path.

In our example, n = 5 rows of slots are applied to the bottom of the thermal profile in increments of 2δ = 11 mm (two disk thicknesses). The width of the strip with slots in the profile is calculated, from 25 to 30% of the profile width Nmm = 2δ · n = 55 mm. The slots are staggered with a longitudinal displacement of 50 mm, the distance in the row a is up to 25 mm, the length of the slit l is up to 75 mm. The gap 21 may be min 0.4 mm.

If you change the profile of the knives and the angle of sharpening of the cutting disc, as well as the corresponding gaps between the punch and the die, the device can change the configuration of the slots and their sizes, which will allow you to apply any perforation in the form of slots with protrusions and recesses of various kinds on any continuously moving plane.

Claims (3)

1. A device for applying slots on a continuously movable profile, characterized by the presence of a lower drive shaft installed in two fixed housings, on which a punch with a package of cutting discs, two movable housings, in which two control nuts with screws, and an upper shaft with a matrix in the form of a pack of disks, movable cases are made with the possibility of moving in a vertical plane along two columns installed in stationary cases, while the matrix disks are made of different diameters with black pressing a larger diameter disk with a smaller diameter disk, and the outer surface of the knives of the punch cutting disks is made with a cylindrical section, the width of which is 15-21% of the width of the cutting disk, and with a conical section, the generatrix of which is located at an angle of 27-30 ° to the symmetry axis a disk, and between the cutting disks there are disks with a cylindrical outer surface having a smaller diameter than the cutting disks, the matrix disks of a smaller diameter are located above the cutting disks, and the matrix disks are larger in diameter and - over the disks of punches with a cylindrical outer surface. 2. The device according to claim 1, characterized in that the width of the disks of the matrix is equal to the width of the cutting disks of the punch. 3. The device according to claim 1, characterized in that the conical surfaces of the knives of the cutting discs are oriented in opposite directions relative to the longitudinal axis of the device.

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