SU704814A1 - Apparatus for blaking sheet materials - Google Patents

Description

The invention relates to the field of manufacturing products from polymeric materials and can be used in shoe factories for cutting down parts from sheet rubber, cardboard, leather jackets, such as soles, heels, heels.

A device for the manufacture of rubber products is made in the form of a press, which includes a carriage movable from the drive with mold-forming tools attached to it and mounted on guide columns mounted in front of the working position of the press with ejector plates 1. .

 In the known device, the laying of sheet blanks on carriages is done manually, which dramatically reduces the performance of the entire device. In addition, in the known device, the removal of finished products and stacking them after the end of the press :, vanilla is done manually.

The closest known device is a device for cutting blanks from sheet materials, including a support mounted on a base in front of the working position of a press, which carries movable along the cutting frames interacting with the upper plate of the press and pushing mechanisms for collapsed blanks, and located under the support, a movable in a vertical plane table for laying blanks S21

A disadvantage of the known device is that the process of laying sheet blanks on carriages is not mechanized.

The purpose of the invention is to mechanize the process of laying sheets on the cutters.

The goal is achieved by the device for cutting blanks from sheet material, including a support mounted on the base in front of the working position of the press, which pivots about the horizontal plate of the press, moving along the guide axles, and cutters, and a table for laying billets movable in a vertical plane, located below the support, is equipped with a cassette mounted on the base above the support of the movable and vertical plane adki sheets. having b; but, made in the form of parallel strips arranged in the direction of movement of the carriages, and pivoting stops mounted on each carriage, aligned between the plate of the bottom of the cassette and connected with a hinge lever installed on the carriage in contact with the upper press plate and with an emphasis fixed on the base. The invention is illustrated in the drawings, where: in FIG. 1 shows a general view of the device; fig.2 is a kinematic circuit; see 3 - support rotation mechanism; in fig. 4 - ha ha drive carriages and tables; in fig. 5 - table lifting mechanism; in fig. b -. ejection of waste on a support; in fig. 7 - pushing the products on the support; .on FIG. 8 - d sheet feeder. The device is made in the form of a press having a base I, a slider 2, an upper plate 3, supporting brackets 4, 5., and a lower thrust plate 6. On the base 1 of the press there are fixed guide rails 7 equipped with hinged tips 8 and corresponding spring-loaded supports 9 The carriages 10, 11 alternately arrive to the device during the operation of the device. The carriages, in turn, are equipped with a stop 12 (see Fig. 8 with a pivot stop 13 and InajpoBbiM latch 14, contacting with a spring-loaded release lever 15, which is connected to the retainer . m 16 and contact in the ass This “moment” with a stop 17 installed on the base and the upper plate of the press. The carriages 10, 11 are also equipped with a plate 18 on which the shaping tools, made in the form of cutters 19, and hinged joints 20 are fixed. Before the working position of the press on the base 21. the axis 22 is rotatably mounted a support 23 with shchestřía 24 interacting with the axis 22. The support 23 in turn is equipped with guide columns 25 on which the ejection mechanisms, made in the form of plates 26, 27, which are provided with locking plates -28, 29 with the possibility; them moved and d. connected with a spring-loaded squeezing two-arm lever 30, which interacts respectively with a lateral support 23 installed on the side, a double-shoulder swivel support 31. Plates 26, 27 are made with openings 32, and shut-off. plates 28, 29;: with longitudinal holes 33, which are made coaxially. In the holes 32, which are extra in plates 26, 27, the passage through the longitudinal holes 33 on the locking plates; plates 28, 29, ejectors 34 are freely installed (see Fig. 6, 7), which are made in the form of a single rod DS with three locking grooves , 37, interacting with the locking plates 28, 29, through the longitudinal hole 33. To give the ejector a predetermined weight, it is provided with a head 38. For the axle: 1: Enforcing the additional movement of each platform when pushing out waste, each platform is equipped with a mechanism that consists of Plates 26, 27 mounted on the sides, a toothed rack 39 interacting with a fixed intermediate bristle 40, as well as a second toothed rack 41 (mounted on a support 23 with the possibility of movement), equipped with a squeezing roller 42, periodically interacting with a copy groove 43 mounted on the side of the support 23. For fixation in the initial position, the support is provided with a clamp 44, the non-working part of which has a twisted shape. Clamps 44 are associated with spring-loaded pull-off levers 45 and a magnetic coil 46. In addition, the support is provided with clamps 47 securing the position of the carriages 10, 11 on it, which also cooperate with the supports 48 located on the side of the support. blanks directly by carriages 10, 11 under the press, on top of the support 23 there is a loading cassette 49 installed, for stacking the stack sheets 50, having a plate 51 with an adjusting bolt 52. The bottom of the cassette is made in the form of The carriage of parallel strips 53. Moreover, the cassette 49 is hinged on a vertical rod 54 and is held on it by a movable arm 55, which is equipped with an adjusting screw 56 resting against a pad 57 fixed fixedly on the rod 54. In turn, the rod 54 is configured to vertical movement in the housing 58, mounted on the base 21 and provided with a roller 59, interacting permanently with an eccentric 60. for lifting and lowering the cassette 49. The eccentric 60 is equipped with a bristle 61 that interacts with stubble 24 mounted on the axle 22 of the support 23. Also on the base 21, transporting plates 63, 64 are provided with the possibility of movement, equipped with toothed racks 65, 66. The transporting plates 63, 64 bear tables with rods 69 (see FIG. .2, 5), and spring-loaded through the spring 70 upward inside the guide toothed rod 71. In this case, the toothed rod 71 is equipped with a lifting mechanism, made (see Fig. 5) in the form of a toothed shchestrin 72 mounted on the shaft 73 the connection 74, the lever 75 switching - associated with the electromagnetic magnetic coil 76, ratchet 77, spring-loaded latch 78

and the lever 79, interacting with the ratchet 77 and the latch 78, as well as with a spring-loaded rod 80 mounted on the support. Moreover, in order to carry out the feeding of the carriages 10, 11, as well as to carry out the alternating movement at a given moment of the tables 67, 68 for placing the ejected finished products 81 on them, the device is equipped with a mechanism for moving the working bodies, the drive for which is a slider 2. The drive mechanism (see Figs. 1, 2) is designed as a gear-rimming gearbox and includes an adjustment rod 82, which is connected to the arm 4, and also through the housing 83 it is connected to the second rod 84, which is retained via a spring-loaded lock 85 in it from the displacement, while the latch 85 is provided with a spring-loaded hinged dog 86, which interacts with the stop 87 on the base. In turn, the ha 84 is associated with a feed lever 88, which is connected with a second feed lever 89 and with a 90 pull connected with hinge joints 20. The feed levers 88, 89 are simultaneously connected with toothed rails 91, 92, which by means of corresponding pairs of gears 93, 94 are simultaneously associated with corresponding gear racks 65, 66 mounted on transporting plates 64, 63. Moreover, each pair of gears 93, 94 is provided with slit joints 95, 96 connected to el. m. magnetic coils 97, 98. The device is also equipped with a support turning mechanism, which is made in the form of a rack with body 99 (see Fig. 2), which interacts with the bristles 24, with the gear bar 99 provided with body 100, a stop bolt 101; the casing is movable on a rod 102 fixed on the base 21 and spring-loaded by a spring 103; in addition, the housing 100 is provided with a latch 104, cooperating with the stop 12, which fixes it on the rod 102 in a predetermined position with the compressed spring 103; the body 100 itself is provided with a 105 key, which by means of the lever 106 cooperates with a dog 107 mounted on a bar 108 attached to the arm 5.

The device works as follows

Initially, the loading cassette 49 is adjusted depending on the dimensions of the sheets 50. For this, the adjusting screw 52 on the cassette 49 is loosened by turning, and the plate 51 is moved in the appropriate direction, and also moved up or down according to the number of sheets and in accordance with their dimensions. The screw 52 is then screwed in, thus fixing the position of the cassette 49. Then take stacks of sheet blanks in

approximately twenty pens and put them in a cassette. After that, by means of a stop screw 56, turning it in a given direction, lower the cassette in the direction of the support, if you need to feed several rubber sheets with the carriage, or if you need to cut one sheet, then the cassette is lifted up. Thus (see FIG. 8), the pivoting stops 13 mounted on the carriages 10, 11 are provided at a predetermined height (in this case, at the level of two sheet blanks). In this position, the cassette 49 is held on weight above the support by means of a stop screw 56, which rests on the platform 57. In this case, the rod 53, which holds the cassette 49 by means of the bracket 55, is supported by the support roller 59 on the cam eccentric 60. When the carriage 10 begins to move forward, the hinges stops 13 touch the bottom sheets of rubber and transport them. The rubber sheets are thus transported with the carriage to the side of the press. When the carriage passes the installation area of the cassette, it will go under the press, and the rubber sheets 50 transported by the pivoting stops 13 will be lowered onto the cutters 19. The laying on the cutters 19 by the carriage itself 10 sheet blanks is completed. The carriage 10, on rollers having entered under the press along the guides 7, stops at the spring-loaded stops 9. In this position (see Fig. 1, 2), the sheet blanks are cut. A press slider 2 is turned on, which, from the top dead center together with the top plate 3, is lowered towards the bottom dead center. Before cutting the sheets of rubber, the upper plate is 3 seconds, beginning to press on the forcing lever 15, turns it; the lever, interacting with the pivoting stops 13, rotates them to the side, in a horizontal position, and the ball clips 14 fix this position. Plate 3 is then lowered further. It reaches the sheet blanks, presses on them, the carriage 10 on the spring-loaded stops 9 under the pressure of the plate 3 is lowered onto the bottom plate 6 and then, through the cutters 19, cuts through them. The finished products 81 are then inside the cutters, and the waste remains between them. At the same time, at the same time, the ejection of finished previously finished products 81 is ejected from the cutters 19 installed on the carriage 11 located on the support 23 in the lower position above the table 67 (see Fig. 7). The magnetic coil 47 is turned on, its associated lever 46 is rotated and the latch 45 holding the plate 27 moves to the side. Under its weight, the platform abruptly lowers toward the carriage 11, the ejector 34, installed in their predetermined positions in the holes 32 in the plate 27 and fixed by the locking plate 29, enter the holes in the carriage, go through the cutters, 19, to the finished products 81 and pushing them onto the table 67. At the moment of lowering the platform of the rack-and-pinion rack 40 on the plate 27, interacts via gear 4 with the movable rack 42, from which the latter moves up to idle. At the moment of ejection of the plate 27 onto the spring-loaded rod 80, which also drops down and in turn presses on the lever 79, which interacts with the ratchet 77, which begins to rotate in the given direction and through the gear 72 interacting with the teeth of the rod 71 ( See Fig. 5), lowers table 67, overcoming the force of the return spring 70, and the latch 78 fixes this position. At this time, under pressure, the cutting of the rubber sheets 50 on the carriage 10 is completed, and the plate 26 located on top of the support 23 together with pushers 34, under its weight on the guides 25 is lowered (cf. fig. 1) and fixed in this position by a spring-loaded retainer 45. When it reaches the bottom dead center, the slider 2 together with the top plate 3, without stopping, begins to move upwards. In place of the plate 3, the carriers are lifted, on it brackets 4 and 5 with fasteners 82 and 108 fixed on them. During the lifting of the press ram on t ge 108, the hinged pawl 107 reaches the bottom 106 with its hard side modular with it, from which the body 100 of the rack 99, overcoming the force of the spring 103, moves on the rod 102, while the spring-loaded clamp 104 fixes this position at a predetermined moment by falling into the groove on the rod 102. The gear 24 interacting with the toothed rack 99 rotates on axis 22 idle in this direction. NII. At the same time, the bracket 4 lifts the hinged 82 mounted on it, which is connected to the housing 83, and the second ha 84 in the same housing currently remains in place, since it is not fixed by the lock 85 in the housing 83. When the slider 2 rises to a distance from the cutters 19 mounted on the carriage 10, at this moment the spring-loaded latch 85, lifting together with the housing 83, reaches the bearing groove of the fixed rod 84. The latch 85 at this moment fixes the rod 84 in the building 83, then in a place with a hull 83. odnimats upward hinged pawl 86 reaches the stop 87. The pivoted idle, then -when pawl held .zonu tangency with ni.m under the action of the spring, it takes its original position. The press crawler continues to rise. T ha 84, associated with. two feed levers 88, 89, and also, with two toothed racks 91, 92, begins to move them toward the support 23. The carriage 10, connected by hinges 20 by means of a pull 90, connected to the feed levers 88, 89 along the guides 7 also begins to move in the direction of the support 23. At the same time, the corresponding pairs of gears 93, 94, being in constant engagement with the toothed racks 91, 92, begin to turn in a predetermined direction. By turning on the magnetic coil 98, the spline, the connection 96 is disconnected, i.e., the corresponding gear pair 94, which is engaged with the rack 66 mounted on the transporting plate 64, is idled, from which the table 68 remains in place, i.e. on the side, to the right of the support 23 (as shown in FIG. 1, 2). The second pair of gears 93, interacting with the toothed rack 91 and with the transporting plate 63 (clamp connection 95 is not disconnected), begins to move the plate 63 from under the support to the left together with the finished products 81 placed on the table 67. The lever 79 of the table lifting mechanism 67 moves together with the transporting plate 63, moves away from the stop 80. Under the action of the spring, the ratchet 77 is locked in position from the spontaneous table lifting by the clamp 78. Thus, when the slider 2 reaches the top dead center, the feed of the carriage 10 (in this case) to the upper guide supports 23 is simultaneously completed, and the transport plate 68 together with the table 67 also comes out to the left side from under the support. At this moment, the carriage 10 with the hinged lugs 13 pivoting in a horizontal position passes through the bottom of the cassette 49 and comes under the support. At the same time, mounted behind the carriage. Yu stop 12 reaches the latch 104 (see Fig. 3) and interacts with it. The carriage 10 to this moment completely completed the movement and stopped on the support 23. At the same time, the loading cassette 49 together with the sheet blanks 50 arranged in it were turned away from the support in order to have access to the carriage 10. This is necessary in order to remove the waste mesh 3. Moreover, the waste mesh is removed only once and only after the first rubber sheet has been cut (on the replaced plate 18 with other cutters 19 installed on it). This is necessary in order to carry out at the same time an automatic re-installation of the pushers on the platform to the appropriate positions for the sequential ejection of waste and finished products. This way, at the moment of interaction of the stop 12 with the latch 104 of the mechanism of rotation of the support 23; under the force of expansion (see Fig. 3) of the spring 103, the case 100 of the rack rail 99 begins to move forward, the tooth of which begins to interact with the bristles 24. At the moment of rotation of the support, the vertical rod 54 rests on the copier eccentric with the roller 59 60 begins to rise, as the eccentric 60 interacts through gear 61 with gear 24 mounted on the axis of the support. Together with the rod 54, the cassette 49 rises, thus providing the possibility of rotation of the support. The latch 47 cooperates with the stops 48 on the base and the carriage 10 is fixed on the support against mixing. Initially, the turn of the support turns on the magnetic coil 46, which is connected to the lever 45 and pulls it to the side, in this case from the plate 26, the clamp 44. At the same time, when turning the support, the stop roller 42 mounted on the movable rail 41, goes into the groove of the copier of the disk 43, the movable rack bar begins to mix, vras, and the intermediate gear 41, which in turn interacts with the second rack 40, and mixes it onto the guides 25 towards the carriage 10 (see Fig. 6). The rotary double-arm lever 31 is rotated to the corresponding position. Said first turn of the support is idle for waste disposal, since the waste is removed manually for the first time. During the rotation of the support, the lever 30, which is connected to the locking plate 28, reaches its corresponding arm of the pivoting lever 31 and interacts with it, causing the plate 26 to move to its original position. When this spring, which is provided with a release lever 30, fixes this position. Thus, all of the ejectors 34 on the platform 26 are in the initial position. Upon further rotation of the support by 90 °, i.e. when the carriage 10 is on the support in a vertical position relative to the tables, the squeezing roller 43, continuing to mix along the copier groove 44, will move the plate 26 in the opposite direction together with the ejector pushers ; while the support 23, without stopping, continues to rotate from 90 ° to 180 ° (from the moment shown in Fig. 6 to the moment shown in Fig. 7). The lever 15 of the pivot stops 13 reaches the stop 17, interacts with it, the pivot stops return to their original position, and the latch 16 fixes this position. The squeeze roller 43, after fixing the platform, comes out of the copy groove 43 (to the exit); by this time, the gear bar 99 reaches the stop bolt 101, the support stops, stops and stops, having completely rotated 180 °. In this position, the carriage 10 is already at the bottom of the support, together with the products in the cutters and with the waste net removed, as mentioned above, and the carriage 11 is on top of the support. Later on this carriage, the waste grid is also removed from the cutters only once, in order to carry out automatic resetting of the pushers on it. Prior to this removal of the waste mesh, the cassette is retracted, then returned to its original position, while the plate 27, which is currently on the support 23 already above, under its weight, touches the rounded part of the clamp 45, and squeezes it out The guides of the lower 25 are lowered to the initial position, and the latch, under the action of the spring 25, lowers towards the plate 27 and fixes the platform in this position. The plate 26, which at this moment is underneath the guides of the lower 25, is held in a raised position by means of the clamp 45. All ejectors 34 under their own weight and under the weight of their heads 38 are trimmed in the direction of the carriage 10 and pass freely in the holes 32 and through the longitudinal holes 33. The plate is ready for pushing the finished products with simultaneous automation of reinstalling the ejectors. Under the press, the next cutting of sheet blanks will be carried out. The barrel 68 comes under the support, at this point on the plate 26 is the installation of ejectors. Includes email. the magnetic coil 47 of the retainer 45, the platform 26, under its own weight, begins to descend, all the ejectors 34, descending towards the carriage 10, begin to occupy three different positions respectively in height. In this case, the first part of the pushers, which fall into the carriage holes between the cutters, falls below all, since the waste net is removed and does not prevent their free mixing; in this position, the locking groove 35 on the ejector 34 is located in the longitudinal hole of the locking plate 28, the second part of the ejector that, through the holes in the carriage 10, fell into the cutters 19, stops further movement related to those seated in the cutters of finished products 81. In this the position on these ejector pins; the locking grooves 36 are also located in the area of the longitudinal openings of the locking plate 28. These ejectors have a middle position in height. The third part of the pushers, which also pass through the holes 27 in the plate 26 and fail to meet the holes in the path in the plate 18, to which the cutters are attached, abut against it; for these ejector, the groove 37 also falls into the zone of the longitudinal holes 33 and also stops. At this point, plate 26 continues to lower, squeezing lever 30 associated with plate 28 touches the next leg on its way to rotary support 31. Lever 30 is pressed, locking plate 28 moving, with its edges of longitudinal holes 33, comes close at all the grooves of the ejector 34 and fixes them all in this position. In this way, the automatic process of reinstalling all of the pushers was completed at the same time to push out the waste alternately and to push out the finished products. In this position, the plate 26 continues to descend downwardly with the already fixed ejector. Those ejectors, the ends of which are led into the holes in the carriage and between the cutters, idle, are lowered, t, to the waste is removed when the platform is moved for the first time. The second part of the pushers, the ends of which entered through the holes in the carriage into the cutters 19, abutted into the finished products 81 and into the rod 80, which presses the lifting lever 79, the lever turns, the lock (see Fig. 5) 78 is pressed from the ratchet 77, the ratchet rotates on the shaft 78, rotates the gear 72 in the direction of clockwise rotation, while meshing with the gear rod 71 the gear wheel lowers the table for a predetermined distance. In a strictly analogous manner, the ejection of the waste and product removal ejectors on the carriage 11 is automatically re-installed. In the same way, the next movement of the tables 67, 68 of the support at the specified moments occurs. All specified operations are repeated in strict sequence. .

When, during operation of the device, a predetermined number of finished products 81 will be placed on both tables 67, 68, they are removed, the table is lifted up, the magnetic coil 76 is turned up (Fig. 5), the clamped connections 74, the gear 72 is put into neutral (idle) position on the shaft 73. Under the action of the spring 70, the tables 67, 68 rise to their original position. The magnetic coils are disconnected, and the spline connections 74 re-engage the bristle 72 with the ratchet 77 on the shaft 73. Subsequently, the latches 78 hold the tables against their spontaneous movement by fixing.

The laying of the next sheet blanks by the carriage 10, 11 on the cutters 79 by means of the hinge lugs 13 is also repeated. B the process of operation of the device in the cassette 49 stack the next stack of sheet blanks 50.

Thus, in the proposed device, due to the presence of the cassette, the process of laying sheet blanks on the cutters is mechanized.

Claims (2)

1. USSR author's certificate number 462731, cl. In 29 N 3/06, 1972. 2. USSR author's certificate for application number 2396476 / 23-05, cl. In 29 N 3/06, 1976 (prototype). 704814 Fig .. 7