SU1680424A1 - Thread rolling-on machine - Google Patents

Abstract

The invention relates to the field of metal forming and can be used for rolling threads on blanks. The purpose of the invention is the expansion of technological capabilities by providing rolling of various sizes of threads, a thread rolling machine containing a frame on which a loading device with a guide chute and workpiece feeder is located, movable and fixed rolling heads with rolling rollers and a machine control system equipped with a transport system in the form of a pneumatic breaker and a flexible supply hose, the feeder in the form of a vertical pusher mounted above the knurling rollers There is a tray with spring walls forming a longitudinal groove under said pusher, the flexible sleeve of the transport system being placed between the guide and the feed trays. In the course of the machine operation, billets of various sizes are fed from the guide tray through the flexible feed sleeve to the feed tray with spring walls, and from there the vertical pusher into the working space between the rolling rollers. 3 il. (Ls

Description

The invention relates to the processing of metals by pressure and can be used when rolling threads on workpieces.

The aim of the invention is the expansion of technological capabilities by providing rolling of various sizes of threads.

FIG. 1 shows a schematic diagram of a loading device for a threading machine; in fig. 2 - view of the end stop with a sensor for the presence of blanks; Fig. 3 is a machine control circuit.

The loading device of the thread rolling machine has a hopper 1 and a guide chute 2, the outlet of which is connected by a flexible sleeve 3 with a feeding chute 4 with side spring walls and an end stop 5 with a sensor 6 for the presence of billets. In the guide chute 2 parallel to the axis of the tray is installed pneumatic pusher 7 connected to the rod of the pneumatic cylinder 8 and the sensor 9 of the end positions on the stops 10. A vertical pusher 11c driven by the pneumatic cylinder 12 is installed above the delivery tray 4. The feed tray 4 is equipped with a vertical pusher 11 displacements in the reference plane 13 between the knife knurled paired rollers 14 and 15, one pair of which 14 are rigidly secured to the frame 16, thread rolling machine and a second pair 15 - 17 at its headstock having automatic movement cycle. At the supporting knife 13, a sliding chute 18 is installed. The position of the movable headstock 17 is fixed by a sensor 19 electrically connected with the sensor 6 for the presence of workpieces 20 of the orienting element.

In addition to sensors 6.9 and 19, the control circuit of the device also includes pneumatic valves 21 and 22, time relays 23, relays 24, and normally open contacts.

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25 which are connected to the normally closed contacts 26 of the time relay 23. The hopper 1 with the feed tray 2 is mounted on the housing 27. The movable headstock 17 is equipped with an emphasis 28.

The boot device operates as follows.

The blanks 20 are loaded into the hopper 1 and supply power to the control circuit of the charging device. During operation, the blanks are fed into the guide tray 2, from which they are moved into the flexible hose 3 by the pneumatic puller 7, reciprocating in automatic mode from the pneumatic cylinder 8 controlled by the pneumatic distributor 22 by the commands of the sensor 9 interacting with the stops 10 (pressing the sensitive element of the sensor 9 on one of the stops turns on the valve 22, pressing the other stop turns it off).

Each subsequent billet 20, getting from the guide tray 2 (after returning the pneumatic puller 7 to the initial position at the entrance of the flexible hose 3), pushes the previously fed blanks further into the flexible hose under the action of the pneumatic puller 7 moving forward.

When the pneumatic breaker 7 departs to the left (initial) extreme position of the workpiece, it is retained in the sleeve by a step formed at the junction of the tray 2 with the flexible sleeves 3.

The process repeats until the workpiece reaches the end stop 5 (sensor 6 is triggered, setting to On), and the movement of the pneumatic puller 7 stops, as sensor 9 does not reach the stop 10 of the rightmost position, resulting in all the workpieces the sleeve and the orienting link are affected by the force transmitted by the pneumatic rotator 7 from the pneumatic cylinder 8.

The threading machine is turned on automatically. The movable head bearing the knurling roller 15, when moving towards the knurling roller 14 fixed to the stationary bed with its stop 28, interacts with the sensor 19 (the stop 28 is set so that at the moment of its interaction with the sensor 19 the movable roller 15 is in the position when the top-feeding workpiece can no longer fall onto the discharge chute 18 into the gap between the support knife and the feed rollers 15, but the gap between the rollers 14 and 15 still allows the workpiece 20 to flow unhindered from the top to the support knife 13) . At the same time, through the closing contacts of the sensor 19 and the pre-closed contacts of the sensor 6, the control signal is fed to the pneumatic distributor 21, which controls the pneumatic cylinder 12. Vertical pusher

11, lowering, moves the workpiece 20 from the cavity of the feed tray 4 to the plane of the supporting knife 13, and the walls of the tray 4 are pushed apart and hold the workpiece under the action of a vertical pusher 11

0 until the rolling rollers 15 approach. Simultaneously with the power supply, the directional valve 21 is connected to a time relay 23 and a relay 24, whose normally open contacts are closed, thus providing

5, the power supply to the pneumatic distributor 21 after the stop 28 (made, for example, as a pin) ceases to interact with the sensor 19 or when the vertical thruster is moving

0 11, the workpiece 20 ceases to interact with the sensor 6. Normally closed contacts 26 of the time relay 23 after the rolling rollers 15 approach the workpiece 20, the pneumatic distributor 21 is de-energized,

5 relays 24 and time relays 23. The vertical pusher 11 returns to the uppermost position, and a new blank is fed from the feeder 2 under the

0 by the action of the pneumatic puller 7. After the threading process is completed and the knurled rollers 15 are withdrawn to their initial position, the part is rolled down the diversion tray - slide 18 into the finished product receiver.

5 Then the cycle is repeated.

The sensor 19 is activated when interacting with the stop 28 only when the movable headstock 17 is moved from the initial position to the fixed pair of rollers 14. The position of the stop 5 with the sensor 6 is adjusted depending on the length of the blanks.

When switching to a new size, the corresponding rolling rollers are installed on the machine, adjust the position of the stop 5 and sensors 6 and 19. If necessary, adjust the distance between the side walls of the guide tray 2 and the stroke of the pneumatic cylinder 8 by stops 10, while the pneumatic collector 7 must go beyond

Claims (1)

0 the limits of the step at the entrance to the flexible sleeve 3. Claims of the invention A thread rolling machine comprising a frame on which a loading device with a guide chute and 5 billet feeder, movable and fixed knurled headstock with thread rolling rollers mounted on them, as well as a control system associated with the movable knurling head, characterized in that, in order to expand the technological capabilities by providing rolling of various sizes of threads, it is equipped with a transport system made in the form of a pneumatic pusher and a flexible feeding sleeve, the feeder of the workpieces is made in the form of a vertical pusher and installed above the rolling rollers a feed tray with spring walls forming a longitudinal groove under the pusher, and a sensor for the presence of blanks, the flexible sleeve of the transport system being placed between the guide and feed trays, and the sensor for the presence of blanks is connected to the machine control system. // / / 7 FIG. f Phage.2 FIG. 3