SU839123A1 - Apparatus for punching out sheet blanks in staggered fashion - Google Patents

Abstract

1. A DEVICE FOR CUTTING FROM A SHEET? CUTS, PLACED IN CHESS ORDER, containing a press, a junction box connected to chain gears through an overtaking shaft with a press drive shaft, an electric motor connected to the shaft through a worm gear, mounted on a base parallel to the front of the press, is mounted they are the carriage associated with the junction box through the lead screw and the carrier guides arranged perpendicular to the front of the press, the feeding carriage mounted on them carrying the gripping bodies and connected with the p distribution box through the spindle screws, characterized in that, in order to improve the accuracy of the feed pitch, the device is equipped with pushers, which are spring-loaded in the feed direction of the sheet, pushers driven by gripping bodies mounted on one of the sides of the carriage and ends from the side of the press, a slider with a drive mounted on the carriage with the possibility of movement in the direction perpendicular to the sheet feed direction, and the carrier springing in this direction additional tons latches and clamping screws interacting with a sheet fixed on the carriage parallel to the sheet feeding direction with a plate with holes spaced from one another, equal to the feed step of the feeding carriage mounted on the feeding carriage with a retainer made in the form of a rod, the entrance strap in the hole and fitted with a drive mounted on the carriage parallel to the front of the press with an additional plate with holes located at a distance from one another equal to the step of the carriage feed and fixed on hydrochloric pins of the press, to be within the additional aperture plate. (L00Yuoeoo

Description

2. The device according to claim 1, which is equipped with a third bar fixed on the base parallel to the front of the press with a hole, located at a distance from one another, equal to, the step of feeding the carriage fixed on the carriage by an additional a latch, made in the form of an additional rod, which enters into the holes of this strap and is provided with a drive.

3. The device according to Claim 1, which is equipped with two additional power couplings, one of which is mounted on the shaft, and the other is connected to the electric motor and to the worm gearbox.

4. Device according to Claims 1 and 2, characterized in that the strips with holes are fixed with the possibility of removal.

The invention relates to the field of cold metal forming and can be used in devices for cutting from a sheet of blanks located in a checkerboard order.

A device for cutting from a sheet of blanks arranged in a checkerboard pattern is known, comprising a press, a junction box connected by chain gears through an overtaking shaft with a press drive shaft, an electric motor connected to the shaft through a worm gearbox mounted on a base parallel to the front. the press guides, the carriage mounted on them, connected to the distribution box through the chassis and the carrier guides, located perpendicular to the front of the press, the feed carriage mounted on them, carrier gripping device and connected to the junction box via spindle screws l.

A disadvantage of the known device is the lack of accuracy of the feed step.

The aim of the invention is to improve the accuracy of the feed pitch.

The goal is achieved by the fact that a device for cutting from a sheet of blanks arranged in a checkerboard pattern, comprising a press, a junction box connected by chain gears through an overhaul shaft to a press drive shaft, an electric motor connected to the shaft through a worm gearbox, mounted on the base parallel to the front of the press, the guides mounted on them the carriage connected to the junction box through the lead screw and the carrier guides arranged perpendicular to the front of the press are installed The feed carriage, which is attached to them, carries the gripping bodies and is connected to the junction box through the spindle screws and is equipped with pushers, which are spring-loaded in the feed direction of the sheet, are driven to one of the lateral sides of the carriage at one of its ends from the side a press, a slider with a drive mounted on a carriage that can be moved in a direction perpendicular to the sheet feed direction, and an additional spring loaded in that direction latches and clamping screws interacting with a sheet fixed on the carriage parallel to the sheet feeding direction with a strap with holes located at a distance from one another equal to the wary of the feed of the feeding carriage mounted on the feeding carriage with a clamp made in the form of a rod entering the holes a strap and fitted with a drive fixed on the carriage parallel to the front of the press with an additional strap with openings located at: a distance from one another, equal to the step of the carriage feed, and fixed to the movable parts of the press are pins entering the holes of the additional plank.

The device is equipped with a third bar fixed on the base parallel to the front of the press, with openings spaced one from the other, equal to the carriage feed pitch fixed to the carriage by an additional lock made in the form of an additional rod entering the apertures of this plank and provided with an actuator.

The device is equipped with two additional couplings, one of which is mounted on the shaft, and the other is connected to an electric motor and a worm gearbox.

Holes with fasteners are removable.

FIG. 1 shows the proposed device, a general view; FIG. 2 same plan view; figure 3 is a section aa in figure 2, figure 4 - node 1 in fig.Z; figure 5 - node And figure 3 | 6 is a kinematic diagram of the device; Fig. 7 is a kinematic diagram of a junction box; Fig. 8 is a section BB in Fig. 2; FIG. 9 shows the node 111 in FIG. FIG. 10 is the same, an embodiment} in FIG. 11 is a section bb of FIG. 7.

The device comprises a carriage 1c with guides fixed on it, in particular with strips 2,3 and 4. In guides 2 and 4 there are holes in which sleeves 5 and 6 with flanges are installed, respectively.

On the carriage 1 is also fixed to direction 7,. along which the slider 8, which is connected with a drive made in the form of power cylinders 9 fixed on the carriage 1, moves, five clamps 10, each made in the form of a power cylinder, located in it a spring-loaded piston 11 fixed on the piston of the rod 12, and mounted in the carriage 1 of the plate 13. The stem 12 is the upper clamping sponge and the plate 13 is the lower clamping sponge.

In the slider 8, screws 14 are installed, cavities are made, in which the heads of T-shaped pushers 15 (rods) are mounted, arranged horizontally and spring-loaded with spring 16.

At one end of the carriage 1, a rail 17 with holes 18 is fastened. The rail is fastened to the carriage 1 by means of a vertical post 19.

Under the carriage 1, guides, in particular strips 20, are arranged perpendicular to the guides 2,3 and 4. In the guiding strips 20, there are holes in which bushings 21 are installed, which cooperate with retainers made in. The rods 22 are connected with a drive 23 mounted on the carriage 1, which is a power cylinder or an electromagnet.

In the carriage 1, guides 24 are fixed, arranged parallel to guides 2,3 and 4. On guides 24, a feeding carriage 25 is mounted, carrying clamps 26, the structures of which are similar to the design of clamps 10, and spring-loaded pushers 27.

In the carriage 1, two guide screws 28 are connected in parallel with the guides 24, connected with the feeding carriage 25 and carrying worm gears 29

The carriage 1 is connected with a lead screw 30 arranged parallel to the guide 20. On the supply carriage 25, clamps are fixed, made in the form of rods 31, which enter the openings of the sleeves 5 and are connected with

water 32, made in the form of a power cylinder or an electromagnet.

A strap 34 is fixed on the movable part of the press 33, carrying the rods 35 and 36, which interact with the holes 18, and the upper plate 37 of the stamp is fixed.

On the carriage 1 can be fixed rollers 38, interacting with

guides 20. I

Position 39 marked sheet.

An asterisk 41 is fixed on the drive shaft 40 of the press and is connected to the chain 42 with an overtaking clutch 43 mounted on the shaft 44.

Shaft 44 is connected through a friction clutch 45 to a shaft 46 bearing an asterisk 47 and a worm gear 48 which engages with a worm 49. An asterisk 47 is connected with a chain 50 with an asterisk 51 mounted on the shaft 52. The shaft 52 is connected with a gearbox 53 containing gear 54, which is engaged with gears 55 and 56, mounted on shaft 52, bevel gear 57.

In the case of the gearbox 53, shafts 58-62 are mounted, carrying disc brakes 63. A gear 64 is mounted on the shaft 62. and a worm is attached to the 65, which engages with the worm gear 66, which interacts with the end switch 67,

Gear 68 is mounted on shaft 60, meshes with gear 64, freely mounted gears 69 and 70, periodically connected to shaft 60 by means of a cam clutch 71. Gear 72 are rigidly fixed on shaft 61, engaging gear 60, gear 73, which engages with gear 70, is freely mounted gear 55 and gear 74, intermittently linking to shaft 61 with a cam

couplings 75.

A gear 76 is mounted on the shaft 59 and the gears 77 and 56 are periodically mounted, periodically connected to the shaft 59 by means of a cam clutch 78..

A gear 7 is engaged on a shaft 58 which is in engagement with gear 76, and a worm to 80, which engages with a worm wheel 81, interacting with a limit switch; 82. Shaft 83 is fixed in box 53,. bearing gear 84, which engages with gears 74 and 77, gear 85, which enters into gear with gear 86 mounted on shaft 87. Gear 54 is fixed on shaft 87. Drive shaft 88 is fixed on shaft 52.

- The numeral 89 designates the intermediate wheel, and the numeral 90 and 91 designates the connecting rods. The worm is 49 through, the friction clutch 92 is connected with an asterisk 9-3, connected in turn by a chain 94 po with an asterisk 95.

The sprocket 95 is associated with an electric motor 96 rotatably from left to right and from right to left. The gear 57 engages with a gear 97 mounted on a shaft 98, carrying a cam 99 and a disk 100.

On the disk 100, a connecting rod 101 is fixed, which carries a toothed rack 102, which engages with gears 103 and 104

The gear 103 is fixed on the shaft 105 carrying the cams 106, and the gear 104 is fixed on the shaft 107 carrying the cams 108. The switches 109 and 110 designate the switches. On the shaft 109 and 110 fixed ratchet wheels 111 and 112, respectively.

Positions 113 and 114 are electromagnets.

Shaft 58 via disc brake 63 with shaft 115, carrying worm gears 116 which engage with gears 29.

Position 117 marked forks.

The distance between the sleeves 5 and b (the holes in the guides 2 and 4) is equal to ty (sheet feeding step 39). The distance between the holes 18 is t ;, On the other side of the carriage 1, the screws 14 are also fastened.

The rails 20 are fixed to the base 118.

The device works as follows.

The sheet 39 is lowered onto the guides 2,3 and 4. The actuator 9 is turned on, which moves the TURNING FACE 8 along the guides 7. The slider 8 presses the sheet 39 to the side of the carriage 1. Screws 14 press the sheet 39 to the guides 2 and 4. The motor 96 is turned on. In this case, the feed carriage 25 moves the screws 28 perpendicularly to the front of the press 33 along the guides 24. Spring-loaded pushers 27 move the sheet 39 along the guides 2,3 and 4, Turn on the actuator 32, and the rods 31 enter the sleeves 5 The feed carriage 25 stops. The mowing of the sheet 39 is selected by the spring-loaded pushers 27 and the spring-loaded pushers 15. The bulging of the sheet 39 is prevented. screws 14.

Then the clamps 10 are turned on, and the material 39 is clamped by the piston of the rod 12 and the plate 13. The lead screw 30 moves along the front of the press 33

. By means of the guides 20, before mating the rods 35 and 36 with the openings 18. The carriage 1 and the feeding carriage 25 move in two mutually perpendicular directions from the two-turn engine 96 through chains 94 and 50, couplings 92, the worm to 49 and worm gear 48. Screws 28 and 30 are rotated in one direction or another by means of cam clutches 71, 75 and 78. The extreme position of the carriage 1 and the feed carriage 25 is limited by limit switches 67 and 82, which operate depending on the angle of rotation of the worm wheels 66 and 81 respectively.

At the command of the limit switches 67 and 82, electromagnets 113 and 114 are triggered, which engage ratchet wheels 111 and 112 with gear patterns 103 and 104, respectively. The shafts 105 and 107 are rotated and the cams 106 and 108 turn the cam clutches 71.75 and 78 through forks 117.

The sheet 39 is automatically moved from the shaft, 40 through the overrunning clutch 43, the friction clutch 45, chains 50 and 42, the gearbox 53, the driving screws 30 and 28.

The friction clutch 92 cuts the worm to 49 from the electric motor 96.

At a predetermined moment in the middle 22, the actuator 23 is inserted into the bushes 21. The carriage 1 is fixed in a predetermined position.

When moving the movable part of the press 33, the rods 35 and 36 enter into the apertures 18, select the backlash in the matching nodes and the errors of the feed pitch t. At the beginning of the stroke of the slider 33 upwardly, the rods 22 are driven by the actuator 23 from the sleeves 21, to unseat the carriage 1, which moves by a step tj.

After the cutting of the first row of parts from the sheet 39 is completed, at the command of the junction box 53, actuators 32 are turned on, which remove the rods 31 from the sleeves 5, and the clips 10 unclench the sheet 39.

The feed carriage 25 moves with the sheet 39 to the feed pitch t2. Then, the actuators 32 are triggered again, and the rods 31 re-enter the sleeves 5, fixing the feeding carriage 25 relative to the carriage 1, and the clamps 10 fixing the sheet 39 relative to the carriage 1.

Then the cycle is repeated. T 7 7 g 28 t and

3

5. about

ig

FIG:

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Fi & .P

Claims (4)

1. DEVICE FOR CUTTING FROM SHEETS OF LAYOUTS LOCATED IN A CHESS-ORDER, containing a press, a junction box connected to chain transmissions through a shaft with an overtaking clutch with a drive shaft of the press, an electric motor connected to the shaft through a worm gear fixed to the front parallel to the front the carriage mounted on them, connected to the junction box through the lead screw and bearing guides located perpendicular to the front of the press, the feeding carriage mounted on them, bearing gripping bodies and associated with the junction box through the lead screws, characterized in that, in order to improve the accuracy of the feed pitch, the device is equipped with pushers spring-mounted in the feed direction of the sheet, drive gripping bodies fixed on one of the sides of the carriage and one of its ends from the side of the press, with a slider 'with a drive mounted on the carriage with the possibility of movement in the direction perpendicular to the direction of sheet feed and carrying spring-loaded direction, additional pushers and clamping screws interacting with the sheet mounted on the carriage parallel to the sheet feed direction with a bar with holes located at a distance from one another, equal to the feed carriage feed pitch mounted on the feed carriage with a latch made in the form of a rod, included in the holes of the bar and equipped with a drive fixed to the carriage parallel to the front of the press with an additional bar with holes located at a distance from one another, equal to the feed pitch to Roethke and fixed to the movable part of the press pins entering holes in the additional bracket. SU „, .839123 2. The device according to claim 1, with respect to the fact that, it is equipped with a third strip fixed on the base parallel to the front of the press with holes located at a distance from one another equal to. · The feed pitch of the carriage, fixed on the carriage with an additional clamp made in the form of an additional rod entering the holes of this bar and equipped with a drive. 3. The device according to claim 1, characterized in that it is equipped with two additional couplings, one of which is mounted on the shaft, and the other is connected to an electric motor ’and to the worm gear. 4. The device according to claims 1 and 2, characterized in that the strips with holes are fixed with the possibility of removal.