SU755385A1 - Apparatus for feeding and removing parts - Google Patents

Description

The invention relates to the field of mechanization stamping production and can be used to feed parts into the strain and their subsequent removal from its working area.

A device for supplying and removing parts to a stamp is known, comprising a reciprocating moving hollow gate with a loading window, and a collider of parts located on the working face, mechanisms mounted in the gate for periodic cooling and lubrication of the stamp tool and sensors for controlling the presence of blanks, as well as folding from drive for removal of parts [1].

However, the known device is not sufficiently productive due to the fact that to complete one full working cycle of the press, the device needs to make two moves.

The device according to the present invention eliminates the noted disadvantage due to the fact that it is provided with stops, one of which is mounted on the folding tray, the other on the gate interacting with each other during the cooling and lubrication of the stamp tool, and in the side walls

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The gate is made inclined in the direction of the axis of the feed grooves, and the pusher details is a freely installed in these grooves finger.

The drawing shows a device for 5 loading blanks and unloading parts from

stamp in section.

The stamped part is shown in the ejected position, and the workpiece is shown in the gate.

The device contains a gate made in the form of two telescopic boxes: the inner box 1 and the outer box 2. The gate is fixed to the base 3 and is equipped with power cylinders 4 and 5. On the inner box 1 in the front part of the gate is mounted a push-pull pushbutton 6 that removes the stamped details of the stamp. The outer box 2 has a boot window 7, which coincides with the through window 8 of the inner box 1 at the time of loading 20 of the workpiece. The workpiece is held in the window 8, the latch 9 with the spring 10. The presence of the workpiece in the gate is controlled by the sensor, made in the form of a power cylinder, comprising a housing 11, a rod 12, elastic

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spring element 13. The sensor is interlocked with the hammer control panel (not shown in the drawing) by means of limit switches 14 and 15. Nozzles 16 and 17 are designed for lubricating the die and the punch.

In the side walls of the gate made inclined grooves 18, in which is placed the jogger 6, made in the form of a freely moving finger.

Tray 19 is installed opposite the gate and is driven by a power cylinder 20.

The roller 21 of the tray 19 is periodically in contact with the stop 22 of the inner box 1 of the gate.

The device works as follows.

In the initial position, the tray 19 and the boxes 1 and 2 of the gate are removed from the die space, the part is in the die, the workpiece has arrived from the heater through the loading window 7 into the window 8 of the inner box 1 and is held by the latch 9.

The cycle starts after pressing the “Start” button on the hammer control panel. At the beginning of the cycle, control of the presence of the workpiece in the executive body is carried out. For. This control circuit of the hammer and the removal removal device provides power to the piston cavity of the control sensor. In the presence of the workpiece, the stem 12 of the control sensor rests against the part, and the housing 11 compresses the spring 13 and presses the limit switch 14, which gives a signal to continue the working cycle. In the absence of the workpiece in the executive body, the rod 12 at the end of the stroke presses the limit switch 15, and the movement of the control sensor case 11 does not occur, since the force required to switch the limit switch is less than the force required to compress the recovered spring 13. The hammer cycle in this case is interrupted.

After checking the availability of the workpiece is introduced into the die space of the tray 19 with the help of the power cylinder 20 and the gate by the stroke of the power cylinder 5. The position of the tray 19 and the gate is controlled by the corresponding limit switches (not shown in Fig. 1), similar to the switches 15 and 14. the movement of the inner box 1 by means of the power cylinder 4. Moving on a part, the pusher 6 removes it from the stamp and pushes it into tray 19, and from it the part falls into the box of stamped parts. In this case, the pusher finger moves along the grooves 18 forward and upward from the initial position, ensuring the tilting of the workpiece. If the finger-pusher had no opportunity to move forward and upward along the inclined groove 18, then the workpiece would be jammed in the die matrix.

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 Having traveled path A (see Fig. 1) after the start of movement, the inner box 1 of the gate rests against the roller 21 of the tray 19 and stops. The efforts of the power cylinders 4, 5 and 20 are chosen in such a way that when the inner box 1 stops in the tray 19, its movement relative to the box 2 ceased despite the fact that the pneumatic cylinder 5 performed only a part of its working stroke, passed only the path A. For this it is necessary so that the force of the pneumatic cylinder 4 is less than the effort of the pneumatic cylinders 5 and 20. This prevents the tray 19 or the outer box 2 from being displaced from the inserted position. The magnitude of the path A is chosen so that at the moment of stopping the int. Renna box 1 due to the stop in the tray 19 of the nozzles 16 and 17 of the lubricating device were located on the axis of the punch and die. In this position, blowing of the punch and die and their lubrication is performed. At the end of the lubrication signal from the limit switch (not shown) is the removal of the tray 19 by the power cylinder 20.

Inner box 1 gate resumes forward movement. At the end of the stroke, the latch 9 abuts the stamp, squeezing the spring 10 of the latch 9, freeing the workpiece, which falls into the matrix. Next, there is a check for the absence of the workpiece in the gate. If the workpiece is stuck. la in the gate, the hammer cycle is interrupted. If the workpiece got into the matrix, then the rod 12 of the sensor control presses the limit switch 15, and the housing 11 of the sensor remains stationary. The control circuit will receive a signal from the switch 15 “A blank will not switch the power cylinder 4 in such a way that the inner box 1 will be removed from the die space. After returning the inner box 1 to its original position, removal from the die space of the tray 19 is performed by the power cylinder 20 and the outer box 2 by the pneumatic cylinder 5.

Next, the process of stamping the part, that is, the impact of the masses of the hammer, their dilution to the initial position and the ejection of the stamped part. The cycle begins again.

Claims (1)

Claim A device for supplying and removing parts containing a reciprocating moving hollow gate with a loading window and a collider of parts located on the working end, mechanisms mounted for periodic cooling and lubrication of the stamp tool and workpiece presence sensors mounted inside the gate and for the drive hinged removal of parts, characterized in that, 755385 five in order to improve its performance, it is equipped with stops, one of which is mounted on a folding tray, the other on the gate, interacting with each other during the cooling and lubrication of the stamp tool, and in the side walls of the gate are inclined in the direction of the axis filing grooves, and pusher parts, is a freely installed in these grooves finger.