SU1481073A1 - Device for dividing elastic material web - Google Patents

Abstract

The invention relates to the field of cutting materials such as fabrics, rubberized and polymeric materials, and more particularly to a device for cutting a web of elastic material into blanks, for example rubberized fabric into blanks of inflatable boats. The goal is to improve the manufacturability and reliability of the device, as well as expanding technological capabilities. The device contains mounted on the frame mounted on the drive shaft cutter with a cutting edge and a pressure cylindrical roller. The device is equipped with an additional clamping cylindrical roller and a supporting disk, while the cutter is made in the form of two circular knives with a cutting edge on the periphery and fixed on their ends of a flat knife parallel to the drive shaft, and the supporting disk is mounted on this shaft perpendicular to its axis between the circular knives and its periphery is rigidly connected with a flat knife, and the cylindrical pressure rollers are pivotally mounted with an inclination to the axis of the drive shaft and with overlap in the area of the supporting disk. Circular knives are made in the form of an ellipse and mounted on the drive shaft obliquely. 1 za.a.f-ly, 7 ill.

Description

The invention relates to the field of cutting materials such as fabrics, rubberized and polymeric materials, and more particularly to a device for cutting a web of elastic material into blanks, for example rubberized fabric into blanks of inflatable boats.

The aim of the invention is to improve the manufacturability and reliability of the device, as well as the expansion of technological capabilities. In FIG. 1 schematically shows a device, front view; in fig. 2 - the same, side view; in fig. 3 - the same, top view; in fig. 4 — node I in FIG. one; in fig. 5 is a section A-A in FIG. four; in fig. 6 - cut blank; in fig. 7 - the resulting product, top view.

A device for cutting a web of elastic material into blanks, for example, rubberized fabric into blanks of an inflatable boat, contains a frame 2 installed on the machine 1, on which a drive shaft 3 is mounted, the latter is connected by a chain gear 4 to the drive 5. A cutter is fixed on the shaft 3. The cutter is made of teams and consists of individual knives 6-8, the sweeps of which correspond to the contours of the sides of the cut blanks. Blades 6 and 7 for cutting the longitudinal curvilinear sides a, b of the workpieces are made in the form of disk knives 5 and 7 obliquely fixed to the shaft 3. The angles of inclination of the air conditioners of the disk knives 6 and 7 to the axis of the shaft 3 are selected in accordance with the configuration of the resulting product. The outer contours of the cutting blades of the circular knives 6 and 7 correspond in shape and size to the ellipses d, c, which are formed, for example, at the intersection of a cylindrical surface with a diameter of the filled chamber of the boat with planes BB and B-B, located 4

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angles to the axis of this cylindrical surface at angles of air (Fig. 7). Circular knives 6 and 7 in the areas of the closest approach of their cutting blades to each other on the shaft 3, corresponding to the dimensions of the transverse sides of the blanks, are made with grooves 9. In the slots 9 are rigidly fixed by means of screws 10, T-shaped inserts 1 1 transitional cutting elements, others the ends of which are rigidly connected by means of fasteners 12 to the transverse knife 8 of the assembled cutter. Knives 6-8 and inserts 11 are made of solid tool steel. The inserts 11 are made with flat bearing edges 13. located on the flat edges of the grooves 9 of the circular knives 6 and 7 with one-sidedly sharpened cutting edges 14. facing outer, and their cutting edges are made in the shape of the circular knives of the cutting knives. The cutting edges of the knife 8 and the inserts 11 connected to it are made with double-sided sharpening and are located on the same line, and the areas of their interconnection with each other are with ledges (steps) and unilateral sharpened blades and are interconnected by flat edges of the ledges 15 facing one other (sharpened edges out).

The shaft 3 has two cylindrical pressure rollers 16 and 17, located in rolling bearings 18 mounted in cross-arms 19. Traverse arms 19 are hingedly attached to rods 20 of power cylinders 21 mounted on frame 2. Pressure rollers 16 and 17 are angled to the shaft axis 3 with their angular displacement one relative to the other along the length of the cutting blades of the circular knives 6 and 7 and overlapping them along the length of the rollers in the middle part of the shaft 3.

The pressure rollers 16 and 17 in the device are located at equal angles to the smallpox of the drive shaft of the disk knives in order to ensure their contact with the transverse knife 8 when cutting the transverse sides of the blanks at each time point at one point for each roller 16 and 17 shifting rotation of the knives in the direction from the middle of the transversal knife 8 to its edges - joints with disc knives 6 and 7. When the pressure rollers are located parallel to the axis of the knife shaft, the transverse sides of the blanks are not cut, because the rollers are pressed TC from the transverse knife, located perpendicular to the longitudinal axis of the sheet to be cut.

In addition, the rollers 16 and 17 are displaced one relative to the other along the length of the cutting blades of the circular knives 6 and 7 (m. P. Are arranged with an angular displacement) with the overlap of their end parts facing one another along the average hour

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tee knife shaft. A supporting disk 22 is fixed on the shaft 3 in the middle part along its length, on which the ends of the pressure rollers 6 and 17 are facing one another, and their opposite ends are placed respectively on the blades of the circular knives 6 and 7. The supporting disk 22 is made with a radial groove 23 to accommodate the transverse knife 8 and its outer diameter is somewhat smaller (on

Yu 0.1-0.5 mm) of the diameter of the cutting blades of the assembly cutter. To prevent reversal of the pressure rollers 16 and 17, when they are rolled around the cutting edges of the cutter, keys 24 are mounted on the rods 20 of the power cylinders 21 located in the slots 25 of the guide sleeves 26. A deflection roller 27 is installed above the pressure rollers 16 and 17 (with the possibility of regrinding of their working surfaces during repair work). The activation of the actuator 5 is controlled by the or button station, and the pneumatic cylinders 21 of the movements of the pressure rollers 16, 17 are controlled by a manual air valve (not shown). Pressure control in power cylinders (cutting force control) is carried out by a gearbox (not shown).

The device works as follows. By transferring the air control knob

3Q of the crane connects the right cavities of the pneumatic cylinders 21 to the compressed air supply line and the rods 20 pull the pressure rollers 16 and 17 away from the shaft 3. Briefly turn on the drive 5 and when approaching the cross blade 8 to the pressure rollers 16 and 17. visually observed, turn off the drive 5 and feed the front end of the web 28 of the material over the deflecting roller 27 into the gap between the shaft cutter 3 and the nip rollers 16 and 17 with the transverse blade 8 overlapping 5-10 mm with the transverse side (edge) of the web 28. Then the control knob power cylinders 21 in a similar position, and the rods 20 move the pressure rollers 6 and 17 to the blade shaft 3. The front end of the blade 28 is clamped at the contact points between the blades of the cutter and the pressure rollers 16 and 17. The re-drive 5p is switched on with continuous rotation of the shaft 3 with the assembly the cutter and the pressure rollers 16 and 17 are continuously pulling the web 28 and cutting out the longitudinal sides a, b of the blanks 29 with circular knives 6 and 7 (the longitudinal sides of the blanks 29 are cut with the circular knife 6 when the left side of the shell is rolled The roller roller 16, and the sides b - by the knife 7 and the right side of the roller 17, while facing one another

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the ends of the rollers 16 and 17 interact with the supporting disk 22). The transverse sides of the blanks 29 are cut out for each turn of the assembled cutter with a pair of pressure rollers: rollers 16 and 17 in the direction from the middle of the transverse side with toward its edges (toward curvilinear longitudinal sides). The cut blanks are lowered down and placed on the trolley-container, and the waste material on the longitudinal sides of the cut sheet is collected in containers (not shown).

The use of the proposed device is obliquely located on the supporting shaft of the one-piece circular knives and two cylindrical pressure rollers, which greatly simplifies the design of the device and reduces the laboriousness of its manufacture and operation.

Introduction to the device disk support

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cutter shaft with overlap in length in the middle part of the cutter shaft one relative to the other and hinged articulation of the crossheads of the pressure rollers with power cylinders provide a constant cutting force at any point of the cutting blades of the assembly cutter knives around their perimeter, guaranteed and reliable cutting out of the workpieces with transverse sides perpendicular to the longitudinal axis of the material web (without any stricter requirements for the accuracy of manufacture and assembly of parts and components of the device), which in combination And with the implementation of the cutting blades of the cutter knives with double-sided sharpening around the perimeter, they increase their durability and reliability in operation. Moreover, the jruuicHofi shape and and inclined mounting relative to the drive shaft allows for cutting from the middle part of the knife shaft, located 20 children with curvilinear lateral stitch of the pressure rollers at an angle to the aspens.

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cutter shaft with overlap in length in the middle part of the cutter shaft one relative to the other and hinged articulation of the crossheads of the pressure rollers with power cylinders provide a constant cutting force at any point of the cutting blades of the assembly cutter knives around their perimeter, guaranteed and reliable cutting out of the workpieces with transverse sides perpendicular to the longitudinal axis of the material web (without any stricter requirements for the accuracy of manufacture and assembly of parts and components of the device), which in combination uu from performing the cutting knife blades with two-way sharpening cutter around the perimeter enhances their durability and reliability in operation Also, performing j.r.uuicHofi shape and inclined disks and installation relative to the drive shaft, allows for nesting of

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FIG. 2

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FIG. 6

Claims (1)

1. A DEVICE FOR CUTTING THE ELASTIC MATERIAL LEAFLET, containing a cutter mounted on the frame mounted on the drive shaft with a cutting edge and a pressure cylindrical roller, characterized in that, in order to improve the manufacturability and reliability of the device, it is provided with an additional