CN1004237B - Gearing of linear reciprocation detail for paper-tape punch of teletype etc. - Google Patents

Abstract

A selectively driving device for linear reciprocating movement part works under the control of an electromagnetic device and a movable middle arm driven by a driving device to make a linear cycle movement. Simultaneously, the middle arm reaches the driven part and transfers the movement to the part under the control of the electromagnetic device selectively. Through the swing stand for the magnetic device driven by the driving device, the magnetic device can be driven to move in the same cycle as the middle arm and the enable the middle arm to lean upon the electromagnetic device without contacting the driven part at the preset moment. Additionally, the synchronizing device only makes the electromagnetic device energized or de-energized at the preset moment of the movement cycle.

Description

The gearing of linear reciprocating motion parts

The invention relates to the improvement of the selectivity gearing of linear reciprocating motion parts, particularly but be not only to use drift about perforation, such as the selectivity gearing that is used for teletype writer paper-tape punch drift, the intermediate active arm that this gearing is equipped with in check calutron and does periodic motion.This intermediate arm can be controlled so that lean on mutually with parts that it is driven selectively by calutron, and this parts are passed in motion.

At this kind equipment that is used on the teletype writer tapping machine, all being that movable part leans on mutually with fixed part at present, is at least in the regular hour, is exactly this situation such as this above-mentioned movable intermediate arm.When calutron was switched on, this movable intermediate arm was promptly held by calutron (generally being an electromagnet), so that these parts of transmission (as drift).

Component wear just needs to change behind certain degree, thereby need often carry out the big maintenance job of expense, so these equipment are still unreliable.

In addition, when calutron was switched on, movable intermediate arm will be drawn onto on the electromagnet with strength, this is for quick acting, but at this moment can produce impact, vibrates, and be disadvantageous this serviceable life to equipment, simultaneously more serious generation noise, this makes troubles for operating personnel.

At last, power needed electric power than higher, and the size of above-mentioned calutron must be directly proportional with the size of current of passing through to calutron.This device costs an arm and a leg, and one comprise many this devices and work simultaneously (such as one have the tapping machine of nine drifts or at a teletype writer paper tape) the electrisity consumption of equipment be sizable, thereby improved the operation cost of equipment.

Purpose of the present invention mainly is to overcome these above-mentioned shortcomings as much as possible and take measures necessary, and this device of being said above making can satisfy various requirement better than the past.Particularly to make these devices more perfect, noise is little, wearing and tearing less, maintenance easily, more reliable, and power consumption reduces.

For these purposes, device of the present invention mainly has such feature, it has a device that supports electromagnetic control apparatus, this device is by above-mentioned gearing transmission, adopting this device is that calutron is also periodically moved by transmission, its period of motion is the same with the middle period of motion, adopt this device that supports electromagnetic control apparatus and intermediate arm can also make the predetermined instant of intermediate arm in each period of motion lean on mutually and not lean on mutually with the parts that driven with electromagnetic control apparatus, synchronous device is equipped with and, when driven these parts will move, the above-mentioned predetermined instant in the period of motion only, when intermediate arm substantially with calutron near the time just make electromagnetic control apparatus energising, and have only below that the predetermined instant of a period of motion just makes the calutron outage.

In the preferred embodiment of this device of the present invention, support the device of intermediate arm and merge into one with the device that supports electromagnetic control apparatus, this device comprises:

-one operating rod, one end are installed on the crank pin and can rotate, and this crank pin is done gyration by transmission around a fixed pin.

-one swinging mounting, the one end is installed on the fixed pin and can rotates, and the free end of its other end and operating rod is fixed together and can rotates, and electromagnetic control apparatus both had been installed on this above-mentioned support regularly, intermediate arm also is installed simultaneously, can rotates.

-one fixing fulcrum post, in periodic motion, intermediate arm is close together with this fulcrum post under the effect of elastic recovery device.

The relevant position of the pivot pin that each are different and the size of each parts are to arrange like this, promptly when the driving crank pin when the above-mentioned predetermined moment is in a certain position, intermediate arm and electromagnetic control apparatus are close together substantially.

The benefit of doing like this is to support the device of electromagnetic control apparatus and supports the device size of intermediate arm and arrange is to consider like this: the motion of intermediate arm part roughly is one and points to the above-mentioned regular-shape motion that is driven the component movement direction, after the calutron energising, when intermediate arm is drawn onto on the calutron, intermediate arm will lean on last with the parts that it is driven.

It combines this simple fact explanation of device of the present invention by selected this layout all and wants the benefit that obtains, does not have this, just will inevitably increase the number of parts, or make structure very complicated, even can make the manufacturing expense raising.

The fact is, in each period of motion, intermediate arm in fact all leans on mutually with calutron, and synchronous device is only switched at the calutron that at that time just makes that paper tape need be bored a hole, particularly advantageously be: in fact the magnetic attraction intermediate arm can't make above-mentioned intermediate arm increase additional motion, because it is on that position.

The result who does has like this eliminated impact, has therefore also reduced all vibrations and noise; Needed magnetic force just is used for intermediate arm is remained on that position, and does not need what action, so the electric power that needs is wanted much less.Therefore employed electromagnet is also much smaller, also considerably cheaper.At last, calutron and the harmonious again action of intermediate arm associating can be avoided any relative slip between these parts, even also leave certain air-gap between calutron and intermediate arm.

Can understand the present invention better by detailed explanation, below to one preferably embodiment be introduced, but here without any the restriction the meaning.Will be in explanation with reference to appended accompanying drawing.

Fig. 1-shown in Figure 3 is the rough schematic according to device of the present invention, and this is three of first kind of mode of operation different positions.Some represented on Fig. 1 automatically controlled parts are not represented on other accompanying drawing again.

Fig. 4-shown in Figure 6 is the synoptic diagram of three the different positions of same device under second kind of mode of operation.

At first, suppose that device of the present invention is to be used for driving selectively a drift 1, bores a hole to paper tape 3 with perforated template 2, such as bores a hole on the paper tape of teletype writer with reference to Fig. 1.In order to realize this perforation procedure, drift 1 is (on figure) vertical movement from bottom to top, i.e. the motion of the direction shown in the arrow 4 in Fig. 6; After drift rises, all to make it return to original position by the return mechanism that does not show on the figure according to general method.In addition, the action of perforation must cooperate paper tape moving forward in a regular time intervals step by step to carry out, and be to carry out selectively, in other words, whether bore a hole in some moment and will depend on outside control signal (, can have the character of alphanumeric symbol and this symbol to decide) according to relevant such as when boring a hole for the paper tape of teletype writer.

Axle 5 revolution and crank pins 6 of transmission of a machine gearing (not showing on the figure) transmission in radial offset, the track of this crank pin is a circle 7, as schemes to go up shown in the dotted line, an end of operating rod 8 promptly is installed on this crank pin, can rotate.

One end of swinging mounting 9 is installed on the fixed pin 10 and can rotates, and can rotate and its other end is installed in the free end (being contained on the pivot pin 11) of operating rod 8.

There is an electromagnet 12 to be fixedly mounted in the medium position of swinging mounting 9.Intermediate arm 13 is installed on the pivot pin 14 of swinging mounting and can rotates, and its position is between electromagnet and above-mentioned pivot pin 11.This intermediate arm 13 reaches the front of the effective range (zone that magnetic force is arranged) of electromagnet, the bottom that almost will run into drift 1.Near the other end of intermediate arm, under the elastic recovery effect of spring 16, intermediate arm 13 abuts against on the fulcrum post 15, and this spring also is contained on the swinging mounting 9 and (is actually above one fork 17 that is contained in above-mentioned support).

Electromagnet 12 is by a suitable power supply (being represented with an accumulator 18), and the centre powers by a gauge tap 19.

The control input end of switch 19 is connected on the output terminal of an AND gate 20 with two input ends; The signal of the control punch action that input 21 other circuit of accepting slave unit (not showing on the figure) are sent here, this part does not belong to scope of the present invention, does not therefore here introduce; Another one input 22 is connected on the sensing device 23, and this device is used for surveying passing through of crank pin at (such as on dead point in its lower section) on the precalculated position of the movement locus of crank pin 6.

Sensing device 23 and AND gate constitute a synchronous device, bore a hole if desired, have only when crank pin is gone on some predetermined points on its track, and this synchronous device just makes electromagnet 12 energisings, and this point will be explained below.

Because the energising and the synchronous device of electromagnet 12 remain unchanged in the whole operation process, so, in Fig. 2-Fig. 6, do not draw again for the ease of understanding.

Referring now to Fig. 1-3 first kind of mode of operation of this device is described, in this mode of operation, do not bore a hole.In the embodiment that is considered, suppose that transmission shaft 5 is (direction shown in the arrow 24 among Fig. 1) revolutions in the counterclockwise direction.

Suppose that position shown in Figure 1 is exactly the position of beginning, crank pin 6 is on the top dead-centre position, and at a distance of certain distance, the upper end of intermediate arm (movable end) also separates with the bottom of drift 1 between electromagnet and the intermediate arm 13.

When crank pin 6 when its track has turned round half way around and arrive dead point (Fig. 2) below it, swinging mounting 9 has been swung a corresponding angle around its fixed pin 10; Therefore the pivot pin 14 of electromagnet 12 and intermediate arm 13 has also walked a segment distance along circular arc, and the distance of their institute's travelings is left the distance of fixed pin 10 respectively with it proportional; In addition, because pivot pin 14 is close to fulcrum post 15, also always abut against on this fulcrum post 15 simultaneously owing to intermediate arm 13, so the free end of intermediate arm 13 (upper end on the figure) be moved to electromagnet 12 very close to the position and in fact be close together (film that can put a known thickness is so that keep the constant air-gap of a known width when intermediate arm and electromagnet 12 are drawn close, this film does not illustrate on figure).

As can be seen, on this position, the free end of intermediate arm in fact has been in the below of drift 1, but the two does not contact.

Dead-centre position below crank pin 6 is in is that sensing device 23 detects and send a signal that AND gate 20 is opened.But, because AND gate 20 control signal of also not boring a hole, so just there is not signal to send switch 19 to, this switch remains disconnection, and electromagnet 12 is just not energising also.

When crank pin 6 continues revolution, cross following dead-centre position and when being raised to top dead-centre position, just swing round about of swinging mounting 9, and driven the pivot pin 14 of electromagnet 12 and intermediate arm 13.Because electromagnet does not have magneticaction to intermediate arm, so intermediate arm can be removed from electromagnet in above-mentioned motion there, whole device returns to the position (Fig. 3) identical with starting position (Fig. 1) again.

Referring now to Fig. 4-Fig. 6 the operational circumstances of this device when boring a hole is described.

Shown in Figure 4 is the position of beginning, this is identical with position shown in Figure 1, and move to next position shown in Figure 5 (on the dead-centre position of crank pin 6 below being in) also to move to position shown in Figure 2 consistent with the top position of saying from Fig. 1 from position shown in Figure 4.

At this moment, sensing device 23 detect crank pin 6 below having arrived the dead-centre position and send signal and send input 22 to, AND gate is opened.The perforation control signal in input 21 theres is sent to the control input end of switch 19, and switch 19 is connected: electromagnet 12 energisings, the magnetic force that electromagnet 12 is produced holds (Fig. 5) to intermediate arm 13 firmly.

Crank pin 6 continues the dead-centre position (Fig. 6) of revolution above arriving, swinging mounting 9 swings and drive electromagnet 12 and with its suction intermediate arm 13 together.Since fixed pin 10 residing positions identical with the height of drift 1 bottom substantially (in other words be exactly be connected and fixed pin 10 and drift 1 bottom straight line substantially perpendicular to the direction of motion of drift 1, that is to say with paper tape 3 and parallel), because position and intermediate arm free end the position (Fig. 5) drift below of electromagnet 12 on swinging mounting 9, move along a circular arc motion intermediate arm 13 ends of support 9, because this arc length is very little with respect to radius, therefore can regard the plan rectilinear motion at the centerline direction of drift 1 as: drift 1 is driven the perforation that moves upward (direction shown in the arrow 4 among Fig. 6) and realize paper tape 3.At this moment, intermediate arm has left fixing fulcrum post 15.

During this time, electromagnet still continues energising, and when the dead-centre position of crank pin below top dead point moves to is, intermediate arm 13 is close to fulcrum post 15 again, this moment, it also connected together with electromagnet 12, have only when sensing device 23 detect crank pin below arriving the dead-centre position and when sending signal, electromagnet ability is cut off the power supply under signal controlling.At this moment, device is in position shown in Figure 2 again, and can proceed next cycle (under the effect of a restoring means, drift 1 is got back to the position of its withdrawal, does not show on this partial graph).

In operating process, just be close together at intermediate arm 13 and electromagnet 12, simultaneously, intermediate arm just carries out the energising and the outage of electromagnet 12 on fulcrum post 15; Therefore, the energising of electromagnet or outage can not cause the substantial motion of intermediate arm 13, and what adorned on the electromagnet is the electromagnet that size is less, price is lower.

So, just can avoid using the sort of not only heaviness but also expensive electromagnet apparatus, this electromagnet can cause that the machinery swing of intermediate arm makes limit stop of its bump, and this will produce vibration and noise under general operating conditions thereby produce impact.

From situation about introducing previously clearly, these embodiment that the present invention is not limited to these application modes and has described in detail especially, in contrast, the present invention will comprise all abnormal and improve.

Claims (4)

1, the selectivity gearing of linear reciprocating motion parts, the gearing that is used for teletype writer paper-tape punch middle punch machine drift (1) more specifically, this device comprises: motor mechanism, gearing by described motor mechanism driving, movable intermediate arm (13) by described gearing gearing cyclical movement, be used for controlling selectively the electromagnetic control apparatus (12) of described intermediate arm so that be close together mutually with parts that it is driven and this parts are passed in motion, and the movable support device that is used to support electromagnetic mechanism (12), the feature of this gearing is: it comprises an operating rod (8), the one end is installed on the crank pin (6) and can rotates, and crank pin (6) is turned round around a fixed pin (5) by transmission; A swinging mounting (9) is the part of described movable support device, the one end is installed on the fixed pin (10) and can rotates, the free end that its other end is fixed on operating rod (8) can (around pivot pin 11) rotate, described swinging mounting (9) is supporting the electromagnetic control apparatus (12) that is fixedly mounted on it and can center on the intermediate arm (13) that pivot pin (14) rotates, a fixed bearing pin (15), in periodic motion, intermediate arm (13) is close together with this fulcrum post under the effect of elastic recovery device; Synchronous device (20,23), described operating rod (8), the use of described swinging mounting (9) and described fixed bearing pin (15) makes electromagnetic control apparatus by the cycle transmission identical with the period of motion of intermediate arm (13); In each period of motion, intermediate arm (13) can be close with electromagnetic control apparatus (12) at predetermined instant, and the parts that do not driven with it are by last, the predetermined instant that has only the above-mentioned period of motion, the electromagnetic control apparatus of intermediate arm substantially when last just by described synchronous device (20,23) make the electromagnetic control apparatus energising, and only the corresponding predetermined instant in the next period of motion makes the electromagnetic control apparatus outage.

2, according to the gearing of claim 1, it is characterized in that: the given position of driving crank is the center, following dead point of crank pin (6) movement locus.

3, according to the gearing of claim 1 or 2, it is characterized in that: size and the configuration of supporting the swinging mounting (9) of electromagnetic control apparatus and intermediate arm are to consider like this, be that the motion of intermediate arm part is one substantially and is being driven component movement direction rectilinear motion, when electromagnetic control apparatus (12) energising and with intermediate arm (13) when holding, intermediate arm (13) will make and be driven the parts action.

4, according to the gearing of claim 1, it is characterized in that: that bottom that is driven parts that the fixed pin (10) of movable swinging mounting (9) and intermediate arm (13) drive all is in and is driven on the roughly perpendicular horizontal line of component movement direction.

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