SU979032A1 - Combination shears - Google Patents

Description

(5) COMBINED SCISSORS

one

The invention relates to the field of metal forming, in particular, to the equipment for the production of stamping and metalworking, intended for cutting sheet metal, cutting steel rolled steel, punching holes.

I Known combined scissors containing a frame with a fixed knife fixed on it, a movable knife mounted on a caliper, a clamp with a drive, a caliper drive in the form of a crank-connecting rod mechanism, a slider mounted with the possibility of contact with the caliper by means of an intermediate link, made in the form of spring-loaded plates, and mechanisms for adjusting the positions of the slide and the caliper, while the crank of the crank-drive rod is installed with the possibility of contact with the slide Gg. In well-known scissors there is a bow mechanism with a roller lever.

glass, spring loaded stock. All of these elements complicate the design of the scissors. After the end of the cutting process, the knife continues to fall down under the action of the spring, disrupting the correctness of the insertion of the plates. Since lowering the knife4; occurs after the release of the metal instantly; shocks occur that have a bad effect on the safety and wear of parts; There is no possibility of adjusting the plate entry between the slide and the slide; scissors cut sheet metal.

1J

The purpose of the invention is the expansion of technological capabilities due to the possibility of cutting sheet and long products.

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The goal is achieved by 4fo in combined shears containing a frame with a fixed stop fixed on it and a fixed knife spring loaded with 9 9, a movable LAW fixed on a caliper, a clamp with a drive, a caliper drive in the form of a crankshaft-connecting rod mechanism, a slide mounted with the possibility of contact with the caliper by means of an intermediate link, made in the form of intermediate plates, and mechanisms for adjusting the positions of the slide and the caliper; in this case, the crank of the crank mechanism is set The contact with the slider, the frame is equipped with a fixed stop and an adjustable screw, the mechanisms for adjusting the positions of the slider and caliper are made in the form of spring-loaded rods installed in the fixed stop, one ends of which are fixed to the slider and caliper, respectively, while the rods are equipped with adjustable stops mounted with the possibility of interaction with a fixed bed stop, and the rod attached to the caliper is equipped with a limit switch installed with the ability to interact with adjustable m screw bed. The clamping drive is made in the form of two wedges located on both sides of the pressure plate and connected to the rods of the power cylinders, while the wedge is made with T-shaped grooves, and the pressure plate with counter projections. In order to ensure the return of the liver spring plates, the intermediate link is provided with a power cylinder. In order to increase the durability of the knives, the caliper is equipped with two wedges, interacting with its inclined surfaces, and the power cylinder, with one clone mounted on the caliper and the second on the stem of the power cylinder. FIG. 1 shows a scissors, front view (diagram); in fig. 2 - section A-A in FIG. one ; in fig. 3 ras bB in FIG. 1. Example The combined shears contain a bed 1 (see Fig. 1 on which the pressure plate 2 is mounted. The pressure descent and ascent are carried out by two wedges 3 and 4, controlled by two power cylinders 5 and 6. The wedges 3 and 4 are connected to the pressure clamp 2 using T-shaped sleeves made on planes 7 and 8. Such a structure provides lifting and lowering of the presser 2 when moving the wedges 3 and. The clamp 2 has shaped holes 9 and 10 and round holes 11 and 12 for cutting round and square rods and a corner. Under the clamp 2 is placed the desktop 13 n which stacks the sheet metal 14 for cutting or graded 15 (see Fig. 1). The clamp 2 slides up and down along the guides in the bed 1. Further, the scissors contain a crank mechanism with which the connecting rod 16 can be turned on and off at a predetermined rhythm. The connecting rod 16 (see Fig. 2) lowers the slider 17. Koida, the connecting rod 16 is turned off, the slider 17 moves upward under the action of a series of springs 18 mounted on vertical rods 19 attached to the slider 17. The rods pass through a fixed stop 20, made on the bed 1 (see FIG. 2J. Adjustable stops 21 are mounted on the rods 19, which can be fixed to the rods x 19 at any height. Under the slider 17, a caliper 22 is placed, to which the knife 23 or another tool is attached. The slide 22 always rises upward under the action of springs 24 clad on vertical rods 25 fixed to cynnopte 22. Rods 25 pass through a fixed stop in the bed 1. Adjustable stops 26 are fixed on rods x.25. Their position on rods can be adjusted . The edge of the rod 25 is drawn and there is a microswitch m, which interacts with the scissors motor. On the bed 1 there is a screw 27, the position of which is adjusted by rotating the screw 28 from the mounted screw pair. Above the screw 27 is placed a microswitch m connected to an electric motor. galets cars. The motion of the slider 17 and the caliper 22 after each stroke creates a space n, into which one or several plates 29 penetrate the box 30 (see Fig. 2). Plates 29 are placed one above the other in a horizontal plane and are fed forward by the action of plate springs. They are pushed back to their original position by means of the ram 31. On the cylinder rod 31, an electrical switch 32j is fixed, the position of which on the rod can be adjusted. Microswitch 32

interacts with the stop mounted on the frame (not shown); A wedge 33 is fixed on the support 22, which interacts with the wedge 3 (.s. Fig. 2) fixed to the stem of the load-bearing cylinder 35. A fixed knife is attached to the work table 13 The STs interacting with the knife 23. In front of the holes 9-12 (see Fig. 1), the knife 23 has a series of corresponding cuts with cusps for cutting rods, angles, etc. (not shown).

Scissors work as follows, .15

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The operator includes, for example, a foot pedal. The power cylinders 5 and 6 are engaged (see fig, 1). Wedge 3 and move forward. As a result, 2 (| those pressure plate 2 lowers and presses metal 15 to the working table. Then the connecting rod 16 is turned on (see Fig 2), which is connected by a slider 17 At the same time, the cylinder 3 is turned on, which frees the plates 29. Plates 29 are produced under the tension of springs and are ready to move forward as soon as space is made available for them. At the same time, the cylinder 35t 30 is turned on and presses the wedge 3 (see Fig.2) to the wedge 33. Then follows the lowering of the slide 17 under the action of the connecting rod 16. i Slider 17 comes in contact with the caliper 22, which is also starting. The wedge Z does not prevent the caliper 22 from lowering, it only moves forward under the action of the cylinder 35, Then the Q rod 16 starts to rise upwards, the Slider 17 rises upwards following the connecting rod under the action of the springs 18, Raising the slide continues until the stop 21 reaches the fixed support stop 20; the connecting rod 16 does not interfere with this lift, as it is always in a higher position. The caliper 22 does not rise up, but remains below, as the 33 m wedge rests against the wedge Z. Some distance is formed between the slider 17 and the caliper 22 where the plate 29 penetrates, since the position of the stop 21 on the rod can be adjusted. . One, two or several plates 29 penetrate into the space n beforehand, depending on the need. Then the cycle repeats,

After several processes of cutting and ending this process, the microswitch m attached to the rod 25 is turned on. As a result, cylinders 3 and 6 are turned off, wedge 3 and i are moved, and pressure plate 2 releases the clamped metal. At the same time, by means of microswitches the connecting rod 16 goes into side release slider 17. Also includes a cylinder 31, which moves the plates 29 to its original position. Cylinder 35 is also turned on, and wedge 3 extends from wedge 33. In this position, the caliper 22 is lifted up by the action of springs 2. The lift continues until the stop 26 approaches the fixed stop 20, the system has returned to its original position and is ready for a new cycle of rezan. When cutting a varietal metal, e.g. round, the metal bar 15 is inserted into the hole 11 for cutting. At the beginning of the process, the presser 2 is lowered and presses the bar to the fixed base 37 and 38. Then the slider 17 is lowered and cuts the bar. To do this, the sleeves 39 and O of the corresponding steel are inserted into the base 37 and slider 17. Further progress of the bar pushes the segment, which falls into the box. The feed can be automatic by known means or manually

The proposed scissors allows you to expand the technological capabilities of the tool by cutting sheet and section metal compared to the base object, which is selected as a prototype.

Claims (3)

Invention Formula 1, Combined scissors, containing a frame with a fixed knife fixed on it, a movable knife mounted on a caliper, a clamp with a drive, a caliper drive in the form of a crank mechanism, a slider installed in contact with the caliper by means of an intermediate link, made in the form of spring-loaded plates, and mechanisms for adjusting the positions of the slide and slide, with the crank crank; The tunnel mechanism is installed with the possibility of contact with the slider, which is due to the fact that, in order to expand technological capabilities due to the possibility of cutting sheet and long products, the frame is equipped with a fixed stop and an adjustable screw, the mechanisms for adjusting the positions of the slider and caliper are in the form of mounted in a fixed stop and spring-loaded rods, one ends of which are fixed on the slider and caliper, respectively, while the rods are equipped with adjustable stops mounted to from interaction with the fixed stop of the frame and the rod mounted on the support, is provided with a limit switch mounted to cooperate with regularity liruemym screw frame. 2. The scissors according to claim 1, so that the pressure drive is made in the form of two wedges located on both sides of the pressure plate 9 2 you and connected to the rods of the power cylinders, and the wedge is made with T-shaped grooves, and the clamping plate - with mating tabs. 3. The scissors according to claim 1, which is designed so as to ensure the return of the spring-loaded plates, the intermediate link is provided with a power cylinder. . Scissors pop 1, in contrast to the fact that, in order to increase the durability of the knives, the caliper is equipped with two wedges that interact with each other with their inclined surfaces, and the power cylinder, with one wedge mounted on the caliper and the other on the stem of the power cylinder. Sources of information (Taken into account during the examination 1. USSR author's certificate No. 716724, cl. B 23 D 15/12, 1977 (prototype). ; / Y Have and hr 2 ff Y ““ / AA Phage. g