SU956273A1 - Apparatus for cutting gaskets of elastic material - Google Patents

Description

one

The invention relates to the field of cutting material and can be used in the clothing industry to cut elastic material for shoulder straps.

A device for cutting pads of elastic material is known, comprising a base, an actuator, a cutting unit, a feed mechanism made in the form of kinematically connected with each other and driven conveyors mounted on a frame pivotally mounted on the base, as well as a lifting and lowering unit of frame 1 .

A disadvantage of the known device is that it does not allow to obtain gaskets of the same shape. This is because the feed mechanism and the frame lifting and lowering unit are interconnected, which causes the gasket to move when the frame is rotated.

The purpose of the invention is to provide the possibility of obtaining uniform gaskets due to the symmetrical deviation of the frame from the neutral position.

The goal is achieved by the fact that in a device for cutting gaskets from an elastic material containing a base, an actuator, a cutting unit, a feed mechanism, is made in the form of kinematically connected to each other and with a drive of conveyors mounted on a frame pivotally mounted on the base, and also a frame lifting and lowering unit, conveyors connected to the drive through two separate kinematic chains, each of which contains a clutch connected to the lifting and lowering unit of the Roma.

FIG. 1 shows a kinematic diagram of a device with a frame, which is located at its lowest position, side view; in fig. 2 - the same, when the frame is in the highest position; in fig. 3 view A of FIG. 1 and 2; in fig. 4 .- section BB in FIG. 1 and 2; in fig. 5, the cutting scheme of foam gasket strips, the cutting line, is shown in the vertical plane of the longitudinal axis of the beam; in fig. schematic representation of the arrangement of conveyors of the feed mechanism The device contains an electric motor 1, a V-belt transmission 2, a pe ductor 3, gear k, rigidly mounted on the shaft of the gearbox 3 and engaged with gear 5. It is installed on the shaft 6, on which gear 7 and platform 8 are last. a platform 9 is installed with the possibility of moving along it in the radial direction. At the platform 9, a stand 10 is installed, at the end of which a vertically mounted knife 12 spring-loaded with a spring 11 is mounted. The other end of the knife 12 is fixed in the guides 13 making vertical translational movements with the aid of the crank-connecting rod mechanism 14 provided in | The same as that of the electric motor 15. The rack 10 is a separator for the cut gasket 1 and is made in the form of a curved shape (not shown). Cut strips are removed from the cutting zone by any known method. The foam filler feed mechanism into the cutting zone consists of three conveyors — one vertically closed 16, located in the lower part of the crawler mechanism, and two horizontally closed lateral 17 18. The feed mechanism does not have fixed walls in contact with the surface of the foam rubber bar. All three conveyors 16-18 have a length corresponding to the length of the beam. The lower vertically closed conveyor 16, on which the timber is laid, for the convenience of laying the timber and leading it to the cutting knife 12 may even be somewhat longer than the timber. The laterally horizontally closed conveyors 17 and 18 are somewhat shorter for the same reason. Since the cross-sections of the bars vary depending on whether the gaskets are cut into shoulder pads for suits or coats, the width 934 of the conveyors 16-18 may be less than the base and height of the foam rubber bar. All three conveyors 16-18 move synchronously at the same speed. Conveyors 16-18 are mounted on frame 19, which is connected to the device bed 20 in the cutting zone by means of hinges 21. On the other hand, frame 19 rests on a vertical 1 PLTOK 22 lifting mechanism. Conveyors 16-18 are connected with an electric motor by means of two individual kinematic chains consisting of stops 23 and 24, levers 25 and 2b, electromagnetic clutches 27 and 28, gears 29-32, main shaft 33, safety clutches, and cam clutches 37 and 38 , side gearboxes 39 and 40, cardan shafts 41 and 42, vertical gearboxes 43 and 44, sprockets, chains 48 and 49, plates 50 and 51, the working surfaces of which are covered with cardo tape. The lifting and lowering unit of the frame 19 consists of gear 52 mounted on the intermediate shaft 53 and engaging gears 7 and 54. The latter is fixed on the shaft 55, one end of which is mounted on the base 20 in ball bearings 56, and on the other The end of the shaft 55 is fixed with an end cam 57, which sets the maximum lifting height of the frame 19. A pin 58, which is rigidly connected to the vertical stem 22, contacts the cam 57. The stem 22 is installed in the pipe 59 with the possibility of its height adjustment. The pipe 59 is installed in the guides 60. The raising and lowering of the frame 19 at an angle about is carried out relative to the hinges 21 mounted on the frame symmetrically relative to the longitudinal axis of the frame 19 in the horizontal plane, dividing the foam rubber bar in height into two parts. In the lower position, the frame 19 rests on the adjusting bolts 61 mounted on the frame 20. In this case, the rod 22 in the lowest position is not in contact with the lower plane of the frame 19, but lowers below the plane of the support bolts 61. For switching on and off the electromagnetic couplings 27 and 28, gear 62 is equipped with a lobe 62 with the possibility of interaction: with contactless switch-overs 63 and.

The device contains a collector B5 on the case of which copper rings are fixed, along which carbon brushes 66 slide.

Adjustment of the side conveyor 17 and 18 across the width of the foam rubber bar is carried out by means of handles 67 mounted on frame 19. The thickness adjustment of the cut pads is carried out by installing the stops 23 and 2k relative to the fingers 68 and 69 and the levers 25 and 2b itself.

For a more reliable mechanical fixation of the foam rubber bar in the cutting zone, there is an electromagnetic clamp mounted on the frame 19 and consisting of an electromagnet 70 and a clamping plane 71 With this clamping plane 71 the electromagnetic clamp clamps the foam rubber bar from the top at the moment of cutting the gasket. It is lifted by an electromagnet 70, freeing the foam bead from squeezing as it moves toward the cutting knife 12, thereby eliminating the occurrence of friction forces.

The device works as follows.

Foam plate 72 is placed on plates 50 of a vertically closed conveyor 16. Horizontal 67 side lateral conveyors 17 and 18 are installed so that the needles of the cord tape enter the foam bar 72..

Pressing the start button (not shown) turns on the electric motor 15. The rotation of the shaft of the electric motor 15 is transmitted to the crank mechanism I, which transmits translational-return movements to the knife 12.

By pressing the start button (not shown) turn on the electric motor 1. The rotation of the shaft of the electric motor 1 through the V-belt transmission 2 peg; It is transmitted to the input shaft of the gearbox 3i, then through the gear pair k and 5 to the vertical shaft 6 of gear 7 and the mold 8j. Further, the rotation is transmitted from gear 7 through a gear train. 52 and 5 - on the camshaft 55 and the end cam 57

The rotating cam 57 interacts with the finger 58, which is rigidly connected with the rod 22, which, when lifted, rotates the frame 19 and sets it to the upper position at an angle cL to the horizontal plane. The boom of frame 19 is made in this position.

At the next point in time, the knife 12 mounted on the rotating platform 8 comes to the bar 72 and, with further rotation of the platform 8, cuts and separates the cut gasket, which is removed to a receiving hopper (not shown).

With further rotation of the end cam 57, the frame 19 is lowered and installed in the lower position at an angle ot / 2 to the horizontal plane, the frame 19 is raised in this position. The knife 12, rotating with the platform 8, approaches the beam 7 and with further rotation of the platform 8, cuts and separates the gasket, which, like the previous one, is removed to the receiving bin, the bottom is shown.

The movement of the beam 72 is performed by the synchronous movement of the conveyors moving at the same speed, and is carried out only during the raising and lowering of the frame 19. At the same time, the petal 62 enters the groove of the non-contact switch 63, turns on the electromagnetic clutch 27 and the electromagnet 70. The latter raises the pressure sleeve. plane 71, freeing the bar 72 from the clamp while it is moving toward the cutting knife. Thus, the occurrence of friction forces and the deformation of the bar 72 as it moves towards the knife 12 is completely excluded.

Claims (1)

At the same time, the lever 25+ kinematic associated with the fixed stop 23, when lifting pai 19 rotates the electromagnetically coupled 27 and the gear 2E connected with it at a certain angle counterclockwise and the gear 31 rotates clockwise with it the shaft 33 of the conveyor 16, At the same time, this movement is transmitted to the gearboxes 39 and kQ, the drive shafts C and 2 vertical gearboxes and the drive sprockets. Thus, there is a simultaneous movement of the conveyors 16-18 and timber 72 at a certain step. In this case, this step is equal to half the thickness of the cut strip. When the frame 19 is lowered, the tab 62 enters the groove of the contactless switch b, turns on the electromagnetic clutch 28 and the electromagnet 70, pressing the plane 71 of which rises, releasing the bar 72 as it advances to the cutting knife 21, thereby eliminating friction and deformation. At the same time, the lever 26, which is kinematically connected to the fixed stop 24, when lowering the frame 19 rotates the electromagnetic clutch 28 connected with it by the gear 30, by a certain angle counterclockwise. At the same time, this movement is transmitted to gearboxes 39 and kQ, cardan shafts 41 and k2, vertical gearboxes 43 and k, and sprockets 45 and 47. Again, the conveyor 16-18 and bar 72 move simultaneously at a certain step. equal to half the thickness of the cut strip. , As the face cam 57 rotates further, the cycle repeats. Compared to the base object. as the prototype, the described device is taken to provide the same shaped pads. Apparatus of the Invention A device for cutting gaskets from an elastic material, comprising a base, an actuator, a cutting unit, a feed mechanism made in the form of kinematically interconnected and driven conveyors mounted on a frame pivotally mounted on the base, as well as a frame lifting and lowering unit , characterized in that, in order to provide the possibility of obtaining gaskets, which are in the form of gaskets, for estimating the symmetrical deviation of the frame from the neutral position, the conveyors are driven by two separate kinematic chains, each of which contains a clutch associated with a frame lifting and lowering unit. Sources of information taken into account during the examination 1. USSR Author's Certificate No. 654404, cl. B 26 D 3/10, 1976 (prototype). "YYL / / | U / J J7 5 7 "K l "ffJ / 2W ff Omxoff H - ff / 77jrff / H222 $ 1 fug.