JPS6031736B2 - deflection device - Google Patents

Description

[Detailed Description of the Invention] This invention provides a switching lever (actuation lever) for a deflection claw.
and a side remote from the switching lever, which is provided on both sides of the switching lever so as to act alternately on the switching lever in synchronization with the processing cycle of the processing device under the action of the thrust linking section (thrust rod). two thrust springs, the ends of which are supported by opposing bearings connected to the thrust linkage, and a device for moving the switch finger into and out of the swinging path of the deflection claw. , relates to a deflection device for blending a flat-shaped conveyed object supplied to one conveyor by a processing device onto two other conveyors.

U.S. Pat. No. 3,871,27 describes a deflection device of this type in which a deflection claw is activated in synchronization with the processing cycle each time one object has passed.

Although this known deflection device is generally satisfactory, the actuation point of the deflection pawl, ie the point at which the deflection pawl rotates from one extreme position to the next, is essentially not adjustable. The deflection device must be set in an optimal state, since it is not possible to activate the deflection claw during the time when the tip of the deflection claw is located in a generally very small gap between two successive objects to be transported. becomes extremely difficult. In the deflection device described above, the actuation point and the deflection of the deflection pawl can be set in increments corresponding to the pitches of the gears of the drive gear. As a result, the timing at which the deflection claw is actuated becomes inaccurate and operation becomes cumbersome. Therefore, the object of the present invention is to
The object of the present invention is to improve the above-mentioned deflection device by configuring the actuation point of the deflection pawl to be adjustable not stepwise but continuously, so that the actuation point of the deflection pawl can be adjusted accurately.

The purpose of this is that, according to the invention, the switch finger for locking the switching lever in its respective extreme position is moved rapidly into the locking position by a snap action after the switching lever has reached its respective extreme position. and a stopper which is movable on and secured to the stopper support rod for engaging the switch fingers and displacing them from the locked position, the stopper support rod being automatically movable in synchronization with the process cycle. This is achieved by

The switch finger is secured to a lever that is biased toward the locked position by a spring.

It is desirable that the switching finger moved from the lock position slides on the end surface of the switching lever by a length corresponding to the outer circumferential length of the rotation angle. When the switching lever reaches one extreme position, the switch finger engages one side of the switching lever under spring action at the end of the sliding path on the end face of the switching lever and holds the switching lever in one extreme position. . The deflection device according to the above-mentioned US Pat. No. 3,871,270 includes:
A disadvantage is that a crank drive mechanism is required to drive each of the thrust linkage and the switch finger.

According to a preferred embodiment of the invention, a common crank drive mechanism is used for the thrust linkage and the stopper support rod supporting the stopper. For this purpose, the thrust linkage and the stopper support rod can be hinged to a lever that is pivotally connected to the crank drive mechanism. The travel of these thrust links and stopper support rods hinged to the lever is set according to the position of the hinge point. Next, the embodiment shown in the drawings will be explained in more detail.

The deflection claw 1 is arranged between a conveyor 2 on the upstream side and two conveyors 3 and 4 arranged in parallel on the downstream side. The deflection pawl 1 is fixed to a shaft 5 and an actuating lever (switching lever) 6 which are automatically loosely attached to the frame of the deflection device and are swung between two extreme positions by means of which actuating lever 6. At one extreme position of the deflection claw 1, the flat-shaped object is transferred from the conveyor 2 to the conveyor 3,
In the other extreme position, it is transferred from the conveyor 2 to the other conveyor 4. Deflection claw 1 is used because the conveyance interval of the conveyed object is small.
must be swung from one extreme position to the other within a limited time. For this reason, the swinging device of the deflection claw 1 has a special structure. The actuating lever 6 is a 2-wire rod wrapped around a common thrust rod (thrust linking part) 9.
It is engaged between the two energy storage springs 7 and 8. Energy storage spring 7,
The free ends of 8 are supported by washers 10, 11 fixed to thrust rod 9. The thrust rod 9 is reciprocated by drive cranks 12, 13, 14 which rotate at twice the speed at which the processor completes one cycle. Two switch fingers 15, 16 near the free end of the actuating lever 6 are attached to the bell crank lever 17.
, 18, the stopper support rod 19, 20 and the drive cranks 12, 13, 14.
With the aid of adjustable rings (stops) 21, 22 fixed to the reciprocal movement once every two operating cycles of the processing device. The switch fingers 15, 16 thus lock the actuating lever 6 in the upper extreme position and release it in the lower extreme position. bell crank lever 17,
18 is held in the upper extreme position by springs 23 and 24. The bell crank levers 17, 18 then assist the stoppers 25, 26. By moving the adjustable rings 21, 22 along the stopper support rod 19, the time during which the deflection claw 1 is activated is set. The pivoting path of the actuating lever 6 is limited by two stops 27, 28 which are fixed with respect to the deflection device. In the illustrated state, the deflection claw 1 is at its uppermost position to guide the flat-shaped object to be conveyed to the lower conveyor 4 on the downstream side. The actuating lever 6 is supported in the meantime on the switch finger 15. When the conveyed object enters the conveyor 4, the energy storage spring 7 is activated by the drive crank 12.
, 13, 14. That is, since the drive crank 14 rotates clockwise, the drive crank 12 swings to the left using its upper end as a fulcrum via the drive crank 13, so that the energy storage spring 7 is moved to the left by the washer 1. It will be pressed and compressed. Just before the next conveyed object arrives at deflection claw 1, switch finger 1
5 operates and causes bar 6 to read. That is, the stopper 21 on the stopper support rod 19 presses the lower end of the bell crank lever 17 to the left, so that the bell crank lever 17 swings clockwise, causing the switch finger 15 of the bell crank lever 17 to move downward. This means that the lever moves away from the actuating lever 6. This relaxes the accumulating spring 7 and swings the deflection pawl 1 via the actuating lever 6 into the lower extreme position in which the next conveyed object is guided upwards between the belts of the upper conveyor 3. That is, the actuating lever 6 moves to the left about the shaft 5. The switch finger 16 is actuated, and after the bar 6 swings, the bellcrank lever 18 swings clockwise under the action of the spring 24, so that it moves upward and hits the stopper 26, causing the operating lever 6 to move in the opposite direction. prevent it from moving. Therefore, the drive cranks 12, 13, 14 compress the energy storage spring 8 after passing through the left extreme position. That is, after passing through the left extreme position, the drive crank 12 begins to swing rightward using its upper end as a fulcrum, so that the crab-biased spring 8 pushes the operating lever 6
and the washer 11. The following operation will only be summarized because the structure of the rocking device is symmetrical. When the drive crank reaches the angular position indicated by 14,1 in the figure, the adjustable ring 22 impinges on the bellcrank lever 18 and pivots it to the left, so that the switch finger 16 follows the pivoting path of the actuating lever 6. move outside. The actuating lever 6 is therefore urged to move to the right, the deflection pawl 1 reaches its upper limit position again and the next cycle is then started. As described above, the deflection device of the present invention is capable of accurately adjusting the switching time of the operating lever by continuously adjusting the position of the adjustable ring (stopper). The configuration allows the deflection claw to be deflected between the upper limit position and the lower limit position at the most appropriate time.

[Brief explanation of the drawing]

The drawing is a schematic side view showing a deflection device according to an embodiment of the invention. 1... Deflection claw, 2, 3, 4... Conveyor, 6.
...Operating lever, 7, 8...Accumulation spring, 15,
16... Switch finger, 17, 18... Bell crank lever, 19, 20... Stopper support rod, 21, 22... Stopper, 23, 2
4... Spring.

Claims (1)

[Claims] 1. A switching lever for the deflection claw, and a switching lever provided on both sides of the switching lever so as to act alternately on the switching lever in synchronization with the processing cycle of the processing device under the action of the thrust linking section. two thrust springs, the ends of which are remote from the switching lever are supported by facing bearings connected to the thrust linking portion, and the switch finger are connected to the swinging path of the deflection claw and the swinging path. and a device for moving it outside.
A switch finger 15 for locking the switching lever 6 in its respective extreme position in a deflection device for blending a flat-shaped conveyed object supplied to one conveyor by a processing device onto two other conveyors. , 16 are adapted to move to the lock position by a snap operation after the switching lever 6 reaches its respective extreme position, and further engage the switch fingers 15, 16 to move them from the lock position. The stopper support rods 19, 20 are provided with stoppers 21, 22 which are movable on the stopper support rods 19, 20 and fixed thereon for movement, and are rotatable in synchronization with the processing cycle. deflection device. 2 Switch fingers 15, 16 are attached to levers 17, 18 which are biased by springs 23, 24 toward the lock position.
A deflection device according to claim 1, wherein the deflection device is fixed. 3 Switch finger 15 moved from lock position
, 16 slide on the end face of the switching lever 6 by a length corresponding to the rotation angle in the outer circumferential direction. 4 Lever 17
, 18 are bent to form a bell crank lever, and the stopper 22 is engaged with the bent portions of the deflection device. 5. Any one of claims 1 to 4, comprising a common drive crank 13, 14 for driving the thrust linking part 9 and the stopper support rods 19, 20 that support the stoppers 21, 22. Deflection device as described in.
6 The crank 13 drives the stopper support rods 19 and 20 that support the thrust linking portion 9 and the stoppers 21 and 22.
, 14, the deflection device according to claim 5, wherein the deflection device is hinged to a lever 12 which is pivotally connected to the levers 12 and 14.