SU770827A1 - Apparatus for punching out parts from strip and band materials - Google Patents

Description

The waste removal mechanism contains ejectors made in the form of rods b with supporting shoulders 7. Rods 6 are installed in holes 4 of plate 3. In cavity 5 of stitched 3 there is also a plate 8, spring-loaded - in the vertical direction springs 9. For passage of rods b in plate 8 Holes 10 are filled and a spring-loaded stop 11 is mounted that interacts with the inner side wall of plate 3. Lever 12 is fixed in plate 3 and is guided in motion by stops 13 and 14 fixed on base 2 and rotated by steering wheel 15. On plate 3 fixed stop 16. (SM Fig. 1), ugory 17 and 18, as well as a hinge mounted spring-loaded lever 19. On the base 2 is mounted using axes 20, mounted on racks 21, swivel bearing 22 (see Fig. 2). On; each of the axes 20 has a ratchet wheel 23 attached and is spring loaded. tongue dogs 24. On each side of the swivel bearing 22, clamps 25 are mounted, which are interconnected to each other 26 with gears 27, and movable toothed racks 28 that engage with gears 27 and are driven from plate 3 through stops 16 Each of the grippers 25 is designed as a fork with a clamping plate 29 and a release bar 30 connected to the plate 29 through a spring-loaded rod 31, driven by the stop 16 through a two-arm lever 32 (see Fig. 6). On base 2, under the pivot bearing 22, support plates 33 are mounted with the possibility of reciprocating in the horizontal plane, spring-loaded to each other. A roller 34 is attached to each of the support bars, which interacts with a wedge 35, on which roller 36 and a spring-loaded lever 37 with a forked end are attached pivotally to the pivot wheel 24 and ratchet wheel 23. Guiding columns 38 are mounted on racks 21 to guide the movement of the spring-loaded springs & 39 39 of the guide bars 40. On both sides of the press, at the level of the control bars 40, there are fixed guide bars 41 and 42 mounted on the frame 43 mounted on the press. Carriages 44 and 45 move along guide rails 40, 41 and 2 with treads 46, plates 47 with cutters 48. Carriages 44 and-45 are interconnected by a bracket 49, bearing a stop 50. Bracket 49 fastens a toothed rail 51, on which are mounted the stops 52 interacting with the rollers 36. Before the working position of the press, below the guide bars 41 and 42, there are mounted in the vertical plane tables 53 and 54 with plates 55 for placing the finished products. Each table 53 and 54 are held by locking means 56 on the drive endless chains 57 and the ratchet wheels 58, which interact with the regulating parts 59 and mounted on a common axis 60. Between the ratchets on the axis 60, the braked roller 61 is installed. All chains 57 tables 53 and 54 are kinematically connected with each other and with a common drive 62. Mechanisms for pushing the finished products onto the table are mounted on two sides of the press. Each mechanism includes a plate 63 with holes 64 and ejectors 65 mounted therein. The holes 64 are identical to the holes on the carriages 44 and 45, and the ejector 65 have a diameter smaller than the diameter of the ejector 6. The ejector 65 has locking shoulder 66. On the plates 63 with the possibility The locking plates 67 are installed with longitudinal holes 68. The plates 63 are provided with ball locks 69 securing the locking plates 67 in -. neutral and working locking position. The locking plates 67 are provided with stop rollers 70 and squeezing levers 71. On plates 63, on vertical guides 72, plates 73 are installed to return the pushers 65 to their original position, equipped with stops 74, spring loaded 75 and interacting with rollers 76 of the squeezing levers 77, pivoting with the help of electromagnetic coils 78. Vertical guides 72 are installed in sleeves 79, which are fixed on frame 43, and are interconnected by means of a traverse 8O, having a stop 81 i Between traversing 80 and sleeve 79 are placed springs 82. Between the thrust the plate 3 and the mechanism for ejecting the finished products on the frame 43 are pivotally mounted levers 83 and 84c with spring-loaded stops 85. The plates 73 have stops 86. The device is equipped with a drive that includes an electric motor 87, a belt gear 88, a gear 89, a shift fork 90, and gear 91, interacting with the toothed rack 51, as well as gears 92.93 and 94. The device is equipped with stops 95, 96.97 and limit switches 98, 99, 100. The position 101 designates the sheet blank, and the position 102 designates the finished product.

A device for cutting out parts of strip and band material works as follows.

When cutting products from sheet blanks 101, stepping knives 46 are removed from carriages 44 and 45, plates 47 are installed with cutters 48 mounted on them with appropriate frame sizes. The motor 87 is turned on, which drives the chains 57. The latter lift the tables 53 and 54. When the tables reach their extreme upper position, the chains 57 are disconnected from the drive 62, the gear 91 is connected to the shaft of the gearbox 89.

The slider 1 together with the upper stop plate 3 is in the upper dead center.

The rods 6 and ejectors 65 are in the initial position (see Fig. 1). In this position, the rods b are lowered and lie locking plate 7 plate 3, and the locking plate 8, which springs 9 are pressed to the lower part of the plate 3, lies on the shoulders 7 and the anvil 11 is pressed to the neutral position at which all rods b can together with the shoulders 7 to go out of its longitudinal holes 10, and she herself, resting against the pressing lever 12, is under the guides 5. By means of the handwheel 15, the stops 13 and 14 are turned towards the plate 3.

In the initial position, the ejectors 65, which, together with the mechanism for pushing the finished products, are lifted under the action of depressing the spring 82 with the guides 72. The locking plates 67 due to ball retainers 69 are fixed in the initial position, in which the ejector 65 fixing shoulders 66 lie on the plates 63 and are able to move freely with them in the longitudinal openings 68 of the locking plates 67.

Under the press, the pivot bearing 22 together with the gripped 25-sheet blank 101, lying above the support, is fixed. The next grippers 25, which are in this position are bored at the side of the support, the next sheet is held up, the next pair of grippers 25, located on the underside of the swivel bearing 22, is ready to receive the first sheet.

By the action of the spring, the support strips 33 move along the base 2 of the press under the pivot bearing 22 and are in contact with it also by the action of the springs. The wedge 35 together with the lever 37 is pressed to its original position in the direction of the stops 52, In this case, the spring-loaded pawls 24 are rotated to the initial position under the action of the springs, and the guide bars 40 hold the springs 39 under the press above the support

position at the level of the guides 41 and 42 with empty cuts, the carriage 44. The carriage 45 is located on the guides 41 above the table 53 with the products 102 previously cut out and seated in the cutters. The slider 1 is included, which, together with the top plate 3 and the waste disposal mechanism, i.e. with rods 6 and a spring-loaded locking plate 8, as well as with a double-arm lever 16 (stop),

o lowered. In this case, the abutment stop 17 acts on the pivot abutment 85 held in the vertical position by the abutment 50 on the bracket 49 and causes the lever 83 to interact with the abutment 81 of the crosspiece 80, which, overcoming the force of the spring 82, lowers, moving downward the whole mechanism for pushing the products together with ejectors 65. When the ejection mechanism is lowered (see Fig. 5), ejectors 65, having passed through the holes b4 of the carriage 44 identical holes of the plate 47, come into contact with the cut products 102 cut in the cutters 48 and stop. hydrochloric lever 71 reaches the stop 97, is rotated and presses against the locking plate 67 to the left, i.e. in working position. The stop roller 70 of the locking plate is under the abutment 74. At this moment, the locking plate 67 of the tip of the pro-longitudinal holes 68 is secured by the shoulders 66 by the pushers 65, which entered the cutters 48, and the remaining pushers can later move upwards. All rods b on the plate 3 (see Fig. 4) also enter the holes 4 of the carriage 45, which is under the press, and at the same time reach the plates 47. At the same time, the rods 6, which are located in front of the 48 holes above the cutters 47, stops, and the rods 6, which are between the cutters, continue to descend. Upon further lowering of the plate 3, the release lever 12 of the locking plate 8, interacting with the pivoting stop 14, rotates and pushes the stop plate 8 to the opposite side from itself. The locking plate 8 fixes, i.e. locks the rods 6 by means of shoulders 7, which entered the holes between the cutters and lowered below them, while fixing the shoulder 7 of these rods remain on the plate 3. The remaining rods can move upwards freely. The plate 3 interacts with the carriage 45, the latter, overcoming the force of the springs 39 (see Fig. 2), is lowered along with the guides 40. The stop 16, also lowering, first reaches the lever 32 for pressing the grippers 25 and turns eiro (see FIG. B). The latter, turning, moves the rods 31 forward together with the release bar 30, while simultaneously lifting the pressing plate 29, The rods 31 at the expense of the bars 30 pushing from the grip the end of the sheet blank 101 to a constant initial position. Further, the lowering of the slide 1 of the second to the fixed stop (shorter) acts on the end of the rack 28, whereby the coupled grippers 25 simultaneously rotate 180 from the laid sheet blank 101 and are fixed in this position. Under the action of the springs, the rods 31 with the release bars 30 with the clamping plates 29 are returned to their original position. Upon further lowering of the plate 3, the rods 6 touch the sheet blank 101 and press it to the pivot bearing 22. At the same time, the locking plate 8, overcoming the force of the springs 9, rises, as the stopped rods b Hold it on their locking shoulder 7, the cutters 48 on the carriage 45 reach the sheet blank 101 on the pivot bearing 22, apply pressure to it and carry out the cutting of products. In this case, the finished products 102 exit into the cutters 48, and the waste remains between them pressed against the pivot bearing 22. At this point, the stops 86 of the plate 73 interact with the adjusting parts 59 of the respective ratchet wheels 58, as a result of which the axis 60 rotates and the table lowers onto a given distance, and the ejector 65 pushes the ready-made products 102 out of the cutters 48 to it. The slider 1, without stopping, together with the plate 3 begins to rise, at this moment the plate 63 simultaneously lifts the ejector 65 and is under the press, i.e. under plate 3, carriage 45 with guide bars 4 under the action of springs 39. Waste. the rods 6 are pressed in the pivot bearing 22. When the plate is further raised, the cutters 48 are separated from the waste, the locking plate 8 rests on the plate 3 and is pressed against it by means of springs 9. The carriage 4 G with the guide plates 40 occupies the initial position, t. e. becomes at the direction of km 41 and 42. By this moment the lever 19 on the plate 3, touching the limit switch 100, turns on the electric motor 87, the rail 51 starts to move from the leftmost position to the extreme right. The toothed rail 51 moves by means of the bracket 49 of the carriage 45 with cut-out products on the direction 42, to the area of the table 54 under the mechanism for pushing the finished products, and the carriage 44 with empty cutters from the guides 41 to the guide 40 under the press. At the time of moving the serrated rail 51, the stops 52 fixed on it simultaneously touch the respective rollers 36 of the wedges 35 mounted on both sides of the pivot bearing 22 and move them towards the rollers 34 mounted on the support bars 33. Together with the wedges 35 the fixed they are spring-loaded levers 37 in the direction of the corresponding ratchet pawl 24 of ratchet wheels 23. By moving, wedge 35 simultaneously act on the roller 34 and pull out the support bars 33 from under the swivel bearing 22, overcoming the force of the return springs n. At this moment, the forks of the levers 37 enter the ball heads of the ratchets from the tanks 24, begin to turn them up, also overcoming the force of their return springs. The ratchet pawls 24 interact with the ratchet wheel 23 and rotate it together with the semi-axes 20 90 counterclockwise. Together with the floor; The axle 20 also rotates the bearing 22 by 90 °, while the waste mesh or the torn waste that is on top of the support easily falls to the opposite side. the press, and the next sheet blank 101 held by the hinged grippers 25 on the next, in order, side of the swivel bearing 22, is already above it. The stops 52 during movement. the toothed rack 51 passes the contact zone with the rollers 36, 35; The latter, under the action of the spring, together with the levers 37, return to their original position. Under the action of the springs, the support bars 33 move on the base 2 under the pivot bearing 22 and are in contact with it, the ratchet paws 24 also return to the initial position. Thus, the swivel bearing 22 is ready to cut parts on it from the next sheet stock in a strictly described sequence. In this case, at the moment of regular cutting, the sheet blank in a known manner is fed under the pressure plates 29 to the grippers 25, which are in the initial position on the lower side of the rotary support 22.. Cutting from a tape blank is carried out strictly in taco {| the same sequence as from the sheet blank, with the only difference that step carriages 46 (. see Fig. 3) are additionally mounted on the carriage for cutting the used section when cutting out ribbon material, which after cutting takes the form of a sheet blank. The process is repeated. If during operation the device needs to replace plates 47 with plates with other cutter sizes on carriages 42 and 43, then after this operation it is necessary to return all rods 6 on section 3 and ejectors 65 on plate 63 to their original position. For this, electromagnetic coils 78 are included, the levers 77 associated with them act with rollers 76 on plates 73, move them to their original position. At this time, the ejectors 65, in which the locking shoulders 66 were located under the locking plates 67, are lowered to their original position. To return the rods 6 of the plate 3 to the initial position, the steering wheel 15 rotates the stops 13 and 14 so that during the cutting of products from the last sheet, the stop 13 is under the squeezing lever 12, and they return the locking 15 plate 8 to the original position under the guide 5.

Claims (2)

1. Device for cutting parts from strip and tape material 20, made in the form of a press containing a plate fixed to the slider, under which on the bed with two semi-axes a swivel bearing is mounted, at least 25 two ratchet wheels, each of which is fixed on one of the semi-axes and associated with the drive, which differs from the fact that, in order to reduce the working stroke of the press slide, the device is equipped with two strips mounted on the base with the possibility of reciprocating movement in the horizontal plane of each other relative to each other and interacting with the lower plane a pivot bearing and two horizontally movable wedges interacting with the slats and connected to the drive, 2. The device according to claim 1, characterized in that it is provided fixed to each of the semi-axes with the ability to interact with the ratchet wheel, ratchet and pivotally mounted on the wedge with the ability to interact with the ratchet dog with a spring-loaded lever. H Sources of information taken into account in the examination 1. Application for copyright certificates 1 2635375 / 25-27, cl. At 29 N 3/06, 29.06.78-, according to which, the decision on extradition was made (prototype Fig.) li 23 W