SU1183267A1 - Apparatus for feeding continuous material - Google Patents

Description

The invention relates to the processing of metals by pressure and can be used to supply lengthy material in the working zone of the landing machine. five

The purpose of the invention is to improve the reliability of the device by performing the rotating elements of the clamping bodies in the form of shafts with diametrically spaced 10 segment grooves and fixed elements of the gripping bodies, in the form of sleeves with a protrusion in response to each segment groove of the shaft.

Figure 1 shows the scheme of the device ;. figure 2 - section aa in figure 1 ‘, fig.Z - shaft design; figure 4 - section bb in fig.Z; figure 5 - bearing sleeve; figure 6 is a view In figure 5. 20

The device comprises a housing 1, in which a slider 2 is mounted so as to move along the feed axis of the bar material. In the slider 2 perpendicular to the feed axis of the material 25, the feed shaft 3 is mounted with a working one. part 4. In the body of the shaft 3 in its working part, two sector samples 5 and 6 are diametrically located one to the other, forming two seconds. 30 torus 7 and 8. In the center of the sector sample, perpendicular to the axis of the shaft, a hole 9 is made for the passage of material. In the slider 2 fixed support sleeves 10 and 11 with holes for bar material. The bushings have end segmental protrusions 12 and 13, with which they are included in sector samples 5 and 6, respectively, forming a clamping body 14 with sectors 7 and 8.

In case 1 (it can be composite), shaft 15 is mounted parallel to shaft 3. In the body of shaft 15, in its working part 16, two sector samples 17 and 18 are diametrically located one to another, forming two sectors 19 and 20. In the center sector sample, perpendicular to the axis of the shaft 15, a hole 21 50

for the passage of material. In case 1, support sleeves 22 and 23 are fixed with end segmental ledges 24 and 25, respectively, with which they are included in sector samples 17 and 18, 55

forming with sectors 19 and 20 gripping. body 26 locking material.

The shaft 15 is installed in the initial position so that its sectors 19 and 20 are rotated 180 ° with respect to the corresponding sectors of the shaft 3.

On the shaft 3, a coupled draft 27 is connected pivotally to the drive by means of a lever 28. On the shaft 15 a draft 29 is fixed, interconnected with the propulsion 27 by means of a friction brake 30 consisting of shoes 31 and 32, and the force closure is effected by a spring 33, the clamping force is adjusted by a screw 34. A reduction matrix 35 is installed in the housing.

The dimensions of the feeder gripping body 14 and the paired lever 27 of the lever are made such that the distance between the centers of pressure on the bar (material) on the gripping side, relative to the distance from the lever 28 to the rod axis, is less than the friction coefficient between the rod and the gripping body 14.

The dimensions of the braking grip 26 are made such that the distance between the centers of pressure on the bar from the side of the braking grip 26, referred to the distance from the resultant friction forces between the bar 29 and the pads 31 and 32, is less than the friction coefficient between the bar (material) and the braking grip 26.

This ensures the condition of jamming of the rod by the feed and the brake grippers. This leads to the fact that the friction force between the rod and the feed gripping body 14 will always be greater than the force acting from the drive lever 28. The friction forces between the rod and the gripping body of the material locking will always be greater than the force acting on pin 28 from the pads 31 and 32.

The device works as follows.

Before turning on the machine, the bar (not shown) is charged through the holes in the gripping body to lock the material until it leaves the gripping body. When the machine is turned on, the feed drive (not shown) informs the reciprocating movement of the lever 28. When the lever 28 moves to the right (FIG. 1), the coupled rod 27 rotates the shaft 3 counterclockwise, while its sectors 7 and 8 press the bar to the segment projections 12 and 13,

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thereby seizing the rod by friction. After clamping the rod, the slider 2 is rigidly connected with the pitch 27 and the translational movement of the lever 28 causes the movement _{5 of the} slider 2, grip 14, and with it the rod. This is how the bar feeding process is carried out.

During the movement of the lever 28 and thrust 27 to the right, respectively 10

Thrust 29 moves to the right, as a result of which shaft 15 rotates counterclockwise up to the stop of its sectors 19 and 20 into segment projections 24 and 25 and does not prevent movement of the bar.

When the lever 28 is moved to the left, the shaft 3 rotates clockwise until the sectors 7 · and 8 stop against the segment projections 12 and 13 and releases the bar. Simultaneous movement of the lever 28 to the left through the pads 31 and 32 and the lever 29 turns the shaft 15 clockwise, and its

sectors 19 and 20 press the bar against the segment protrusions 24 and 25 and hold it by friction. Further movement of the lever 28 to the left causes the return movement of the slide 2 with the grip 14 to its original position '. The bar at this time remains fixed. In the future, the cycle of the device is repeated.

To adjust the required friction force between the pads 29 and the pads 31 and 32, tightening the screws 34 establishes the necessary pressure of the springs 33. Thus, the reciprocating movement of the lever 28 causes the bar to cyclically feed to the punching zone of the machine with alternating feed and holding phases in the machine.

The proposed device allows to provide a small distance between the centers of pressure on the rod ,. which determines the greater reliability of the device.

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Claims (2)

one . DEVICE FOR SUBMITTING A LONG-DIMENSIONAL MATERIAL containing a body, a drive lever, a slider mounted in the body with the possibility of 'reciprocating movement in the material feed direction, made in the form of rotary and fixed elements gripping bodies for locking the material mounted in the body and gripping bodies for feeding material, mounted on a slider, associated with each rotary element of the gripping bodies and the driving lever of thrust, in order to increase its reliability This, each pivoting element of each gripping body is made in the form of a shaft, the axis of which is perpendicular to the material feed direction, two diametrically opposite grooves of the segment shape are made in the middle part of the shaft, located in a plane perpendicular to the feed direction, and parallel to the direction of material supply, each stationary element of each gripping organ is made in the form of a sleeve, coaxial to the body and made with a protrusion oppositely segmented at the groove of each shaft, while the protrusion of the sleeve of the fixed element of the locking grip body material is directed relative to the sleeve opposite to the direction of material supply, and the protrusion of the sleeve of the fixed element of the gripping body of material supply is directed relative to the sleeve in the direction of material feed. 2. The device according to claim 1, characterized in that it is equipped with a brake installed with the ability to interact with. every single thing. 51) "1183267 1 1183267 2