SU1634352A1 - Automatic press for manufacturing parts from metal - Google Patents

Abstract

The invention relates to the processing of metals by pressure and can be used to manufacture parts from a tape material. The aim of the invention is to increase the reliability of work and the productivity of the process of manufacturing parts. The machine contains a base, a control system, a feeder and a drive with individual drives and tension levers, limit switches that interact with the levers and are connected to individual drives, a press, a feed carriage that carries mobile and fixed clamps, and a guide mechanism. The feed mechanism and guide mechanism are installed with the possibility of rotation in a plane parallel to the feed plane, and levers with adjustable stops are mounted on them. Based on the installed position sensors tape, connected with diaphragm ram cylinders and interacting with stops. The guide mechanism is designed as a block of guide rollers. On both sides of the press, clamps are installed, and on the movable clamp, the needles that enter the holes of the puller attached to the carriage are fixed. 2 hp f- “s, 17 ill. -it with with

Description

The invention relates to the field of metal forming and can be used for the manufacture of parts from a tape material, for example centering washers of loudspeaker heads.

The aim of the invention is to increase the reliability of work and the productivity of the process of manufacturing parts.

Figure 1 shows an automatic machine for manufacturing parts from a tape material; figure 2 is the same, the view in the plan; on fig.Z - view along arrow A in figure 2; figure 4 - section bb in fig.Z; figure 5 - node I in figure 4; figure 6 is a view along arrow B in figure 1; in fig. 7 is a sectional view of arrow G in FIG. 6b; FIG. 8 is a view along arrow D of FIG. one; Fig. 9 shows a device for cutting a web; in fig. 10 - 12 - a device for cleaning molds; in fig. 13 - punching press; Figure 14 shows a sequential stamp; on Fig, 16 - stripper tick capture; on Fig - captures; Fig. 17 is a block of guide rollers.

The machine contains a base — a welded fixed frame 1. On the welded fixed frame 1 (FIG. 1) of the machine, a device 2 for notching the blade with a disk knife 3, a molding press 4, including pneumatic cylinders 5 and 6, whose rods are coupled with the mold halves 7 and 8 and heating elements 9 and 10. On the frame 1 is placed the press 11 felling

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punching, including the pneumatic cylinder 12 and the stamp 13 punching-punching. The frame 1 also contains a feeder 14 with a tension lever 15, bypass rollers 16, a block of guide rollers 17, a mold cleaning device (not shown), a tong clamp 18, a drive 19 with a tension lever 20. Drive 19 and feeder 14 provided with rotational drives, respectively, 21 and 22, which are switched with directional switches 23.

On the press 4, there are actuators 24 for turning the halves of the mold 7 and 8 for turning. The machine is equipped with a control system 25. The guide roller unit 17 is housed in the housing 26.

The housing 26 with the help of the lever 27 (FIG. 2) is mated with the rods of the diaphragm pneumatic cylinders 28 and 29, switched with the sensor 30 for controlling the position of the blade 31. The sensor 32, the diaphragm pneumatic cylinders 33 and 34 and the lever 35 are paired with the tong clamp 18.

Klescheva feed 18 (FIG. 3) contains a movable carriage 36 and a fixed carriage 37. The movable carriage 36 is coupled with a stepping feed drive — a power cylinder 38. mounted in the housing 39. The travel of the carriage 36 is adjusted by the micrometer screw 40. The housing 39 is mounted on the vertical axis 41 with the possibility of rotation. On the carriages 36 and 37 are installed, respectively, the tongs 42 and 43 of the same design. The gripper 42 (43) consists of the upper 44 and lower 45 jaws. The lower sponge 45 consists of a puller 46 and a movable clamp 47 mated to the ram 48. The clamp 47 pressed needles 49. The press 50 of the molding 4 has a bracket 50 (FIG. 6), on which four grippers 51 are fixed. The gripper 51 consists of the lower fixed jaw 52 and the upper movable jaw 53 mounted on the rod 54. The rods 54 of the claws 51 are connected through the yoke 55 to the power cylinder 56. The housing 26 is mounted on the axis 57 rotatably, and the lever 35 is connected to the housing 39 (FIG. .eight).

The blade cutting device (FIG. 9) consists of a disk knife 3 fixed on the shaft of a high-speed electric motor 58, which is mounted on a swinging arm-plate 59. The arm-shield is provided with spring-loaded clamps 60, which are pressed to the support 61 when the lever 59 is lowered. Support 61 has a slot for the passage of the knife 3.

Lifting and lowering the lever 59 together with the electric motor 58 and the knife 3 is carried out using an air cylinder 62. The lowering amount of the lever 58 is controlled by the stop 63, which determines the size of the notch made in the web.

The device has guides 64 and a screw pair 65 for moving the knife along the web when adjusted to the desired pitch. The scoring device is fixed on the frame by means of brackets 66 and 67.

A mold cleaning device (see FIG. 10-10) is located on the molding press 4 and consists of a rotary pneumatic actuator 24 turning the mold 7 and 8 for cleaning using a rack and pinion gear (FIG. 1) attached to 5 spring-loaded slide holders 68, and feed pneumatic cylinders 69, which can send molds to rotating brushes 71 via rods 70 via rods 70. Brushes are attached to the ends of the shafts of two 0 electric motors 72 mounted on brackets 73. The brackets are mounted on a rack 74.

A punching press (Fig. 13) is mounted on the bed 75. Along the guides 76 5 of which, using a screw pair 77, moves along the web during setting,

The press consists of a housing 78, in the opening of which a successive stamp 79 is installed and an air cylinder 0 80 connected to the stem 81 of the stamp by a pusher 82 of adjustable length. The adjustment is carried out using a threaded coupling 83.

The housing 78 can be moved vertically along the guide columns 84 by means of an air cylinder 85. The movement is carried out at each cycle after punching to remove the bottom plate from the web and free the web for 0 feed.

The successive stamp (Fig. 14) is provided on the piercer with catchers 86, having a mandatory centering cone, which serves to precisely center the web on the structural or technological element in the form of a truncated cone obtained in the forming operation. For the same purpose, a centering cone is also present on the cutting punch 87 0. In addition, the punch 87 has a VITRCH 88 centering the washer over the central bore.

Punches 87, 89 and dies 90, 91 are set at a distance equal to the feed step of the web.

Tick-borne pullers 46 (see Figs. 3 and 15) are mounted on the movable 36 and fixed 37 carriages above the clamps 47 so that the needles 49 are located in the holes of the puller.

When compressed air is supplied to the power cylinder 48, the piston rod lifts the movable clamp 47, as well as the stripper 46, to the upper elastic gripping sponge 44. The web is pressed between the surfaces of the puller 46 and the jaw 44 and, in addition, is fixed by the needles 49, which pierce the web and a portion of the elastic material of the upper jaw 44 with sharp ends.

When the supply of compressed air is cut off, the piston of the cylinder 48 together with the clamp 47 is lowered under the action of the spring 92, and the pullers return downwards with the side springs (see FIG. 3). The needles 49, descending below the upper surface of the puller 46, exit the web, freeing it for feeding.

During the feed, the web is clamped on the movable carriage 36 and released on the fixed carriage 37. When the movable carriage 36 is returned to its original position, the web is clamped on the fixed carriage and released on the mobile one.

The grippers 51 (Fig. 16) are mounted on the forming press 4 with the aid of brackets 50 and are intended to fix the web at the forming position and to keep the web from sticking to the working surfaces of the molds when they are retracted. The grippers are located at four points along the edge of the web near the cuts. Each pair of grippers is operated by a diaphragm pneumatic cylinder 56 mounted on a cross beam 55 connecting two rods 54 of movable jaws 53. When compressed air is applied simultaneously to two cylinders 56, their rods rest on the screw stops (see Fig. B), the cross bars 55 lower and through the rods 54, the upper jaws 53, which press the web to the lower jaws 52, are lowered. After the crimping and removal of the molds have been completed, the air supply to the pneumatic cylinders 56 is stopped and the moving seals 53 are returned to their original position by springs, freeing the web for feeding.

A block of guide rollers (see Fig. 17) is mounted on a bracket 93 and consists of a housing 26, a vertical axis 94 rotating in a sleeve 95 and rollers 17.

On the housing 26, a lever 96 is fixed, carrying at the end a block 97 with adjusting screws 98. The screws 98 are located between the rods 99 of the diaphragm pneumatic cylinders 100 and are adjustable length stops.

When the web is displaced in the transverse direction more than the permissible limit, compressed air is supplied to one of the diaphragm pneumatic cylinders by one of the diaphragm pneumatic cylinders (figure 2) and pneumatic control equipment.

The cylinder rod extends and, by pressing the adjusting screw 98, turns

5, the lever 96 and the casing 26 connected therewith with the rollers 17 relative to the vertical axis 94. Due to the rotation of the rollers and the resulting transverse component of the netting force, the web returns to its former

0 position.

The circuit for preventing and feeding the belt includes a feeder 14 (Fig. 1), a tensioning lever 15, bypass rollers 16, a block of guide rollers 17, feeding mechanism 5, 18, accumulator 19 with tensioning lever 20, actuators 21 and 22 of rotation of the feeder 14 and the accumulator 19.

When refueling, the canvas bends around the rollers of the tension levers 15 and 20, the bypass 16 and

0 rollers 17 guides. In order to reduce the drag force of the web, the rollers are mounted on ball bearings and can rotate relative to their axes under the action of friction forces emerging between the web and the rollers.

The web feed is carried out cyclically by the mechanism 18 by the step size for each cycle. Tensioning lever 15

14 is raised, and the lever 20 of the accumulator 19 0 is lowered. In several cycles, the levers reach the extreme upper and lower positions and turn on switches 23 with drives 21 and 22. Drives rotate feeder 14, which unwinds from a reel

5, and the accumulator 19, onto which the part of the web (perforated) which is left after cutting down the centering washer is wound onto.

By rotating the actuators 21 and 22 levers

0 15 and 20 move in the opposite direction until their movement using the opposite switches 23 does not turn off the actuators 21 and 22.

The machine works as follows.

five

A reel with web 31 is installed in the coil feeder 14. Then the strip 31 is manually drawn through the bypass rollers 16, the guide rollers 17, the grippers

0 51, the jaws 44 and 45 of the clamping jaw 42 of the movable carriage 36, the jaws 44 and 45 of the clamping jaw 43 of the fixed carriage 37 are fixed on the drum of the accumulator 19. The heating elements 9 and 10 produce the heating of the mold 7 and 8 to the required temperature .

In the initial position, the tension lever

15, the feeder 14 is lowered, the tension lever 20 of the accumulator 19 is raised, the halves of the mold 7 and 8 are retracted from the strip 31. The stamp

the notches-punching is opened, the jaws 52 and 53 of the jaws 51 are opened, the jaws 44 and 45 of the tong tong 42 are opened, and the jaws 44 and 45 of the tong tong 43 are collapsed, the mobile carriage 36 of the tong 18 is in the leftmost position, the knife 3 of the trimmer 2 is retracted in the up position and rotates. The drives 21 and 22 of the accumulator 19 and the feeder 14 are disconnected, the sensors 30 and 32 are touching the strip.

At the command of the control system 25, the blade 3 descends, cuts the web 31, and returns to its original position. At the same time, the grippers 51 fix the web 31, the rods of the pneumatic cylinders 5 and 6 make a working stroke by hot-molding the impregnated web 31. After the impregnation material is polymerized, the halves of the mold 7 and 8 return to their original upper position, and the grippers 51 are turned off ( reveal).

Similarly, the press 4 of the molding and simultaneously with it the punching-punching press 11 operates, the punching-punching press 11 is driven by the pneumatic cylinder 12, and the punching process is driven by a sequential punch.

The control system 25 turns off the clamp-on clamp 43 and turns on (reduces) the clamp-on clamp 42, after which the movable carriage 36 feeds the strip 31 into step. Then, the tick grips 42 and 43 reversely switch and the cycle of operation is repeated. The feed pitch is corrected using a micrometer screw 40.

The presence of the needles 49 installed in the lower clamps 47 ensures the feed of the strip 31 by the step size without slipping. The pullers 46 provide a guaranteed removal of the blade 31c of the needles 49 and a uniform pressing of the blade 31 to the upper jaws 44 of the grippers 42 and 43.

The return of the movable carriage 36 to the initial state is performed during the execution of technological operations.

When the strip 31 is moved to a pitch, the tension lever 15 rises, and the tension lever 20 descends. The process is repeated until the limit switches 23 are activated, after which the actuators 21 and 22 return the levers 15 and 20 to their original position. The weight of the balance arms 15 and 20 ensures uniform tension of the web 31 from the feeder 14 to the accumulator 19.

The control system 25 provides periodic cleaning of the working surfaces of the mold 7 and 8. Turning actuators 24 unfold the halves of the molds.

7 and 8, mechanical brushes (not shown) perform the cleaning.

In the case of lateral displacement of the web 31 by the limiting value, by command

The sensor 31 (32) rod diaphragm pneumatic cylinder 28 (33) turns the lever 27 (35) and, accordingly, the housing 26 (or the housing 39) to the desired angle, thereby making an adjustment to the feed strip 31.

0 The adjustment of the feed of the strip 31 is carried out during the operation of the machine. The adjustment is carried out by turning it to the desired side of the housing 26 of the block of guide rollers 17 or the tong-shaped housing.

5 feed 18, installed independently of each other, on the vertical axis x 57 and 41.

Claims (3)

1. An automatic machine for the manufacture of parts from 0 tape material containing a base, control system, feeder and accumulator for tape material, located on the base and associated with each individual drive, pull arms, pivotally mounted on the base of the feeder and accumulator, directional switches mounted on the base with the possibility interaction with tension levers and connected to individual drives, at least one press for processing material mounted on the base and located between the feeder and the hopper, feeding mechanisms still made as a carriage, 5 installed with the possibility of reciprocating movement and carrier movable and stationary clamping and guiding mechanism, characterized in that, in order to increase the reliability of work and productivity of the manufacturing process of parts, it is equipped with diaphragm ram cylinders, sensors tape position located at the feeders and the guide mechanism and connected to the diaphragm ram arms with levers and adjustable in length stops mounted on the levers, the feeder and guide mechanism installed with 0 can be rotated in a plane parallel to the belt feed plane; levers are fixed on the feed mechanism and guide mechanism with the possibility of interaction with the stops with diaphragm 5 power cylinders, the guide mechanism is located in front of the press along the belt feed and is made in the form of a block of guide rollers, the feed mechanism is located behind the press along the belt feed. 2. Machine according to claim 1, characterized in that. which is equipped with needles mounted on a movable clamp, and a puller with holes for the passage of needles mounted on the carriage. -, 3. An automaton according to claim 1, characterized in that it is equipped with four drive grippers mounted on both sides of the press. 73 FIG. f so FIG. 2 Vida Fig.Z bv 4 W 50 5 Vid FIG 6 type G 56 / F FIG. 7 56 55 ZSWWl fc fc fc 9 FIG. ten i-gp 68 70 Fig P 79 Fig / 3 Us bottom parts Centering the end of 91 44 FIG. 15 Surface of the canvas Igr.1b Notch lines 96 FIG 17