DE1963307A1 - Automatic machine for processing connecting wires - Google Patents

Description

Dipl. -Hg. FJ. KUPFEBSfANN FPHN. 382 5.

Patent attorney

- Applicant: RY. Philips' Gloeilampenfabrieken · dJo / WJM.

File No. PHU-3825
Registration dated: December 16, 1969

Automatic machine for processing connecting wires. .

The invention relates to an automatic machine for processing connecting wires.

It has been common practice for many years to use automatic machines for cutting certain electrical wires Length, for the immediate or subsequent stripping of the To apply insulation from the wire ends and for inserting sleeves or clamps. Such machines, of which only a limited number of types are available j are effectively used for very large series productions, a change in the length to be cut or the type of clamp causing the machine to come to a standstill and has to be readjusted with loss of time.

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There are also known automatic machines that perform each of the aforementioned operations separately: the Cutting off to length, stripping, printing markings to identify the wires, inserting of the clamps. Each of these machines quickly carries out the processing in question. Changing the parameters, such as the wire length, the type of clamp, the marking can be carried out quickly and easily. Each of these machines educates a separate work unit and therefore requires personnel for the supply of material and for supervision.

The combination of these different machines according to the machining to obtain a Length of wire with markings and clips has only a limited area of interest. The working rhythms of the machines are often different, the discharge position of the wire may not be suitable for feeding into another machine and a defect in one of the machines prevents the others from working. Though viewed superficially, the latter is likely to appear advantageous, it actually forms a serious concern that translates into a major Accumulation of wire lengths on the other machines is evident. If this is not the case, there is a risk that damage to one machine will require various other machines to be locked, as the different processing, which should result in the finished product, carried out in a certain order Need to become, .... . . , ...

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The automatic machine according to the invention combines a number of organs that are used to achieve a finished product with certain characteristics with each other cooperate. The combination of these organs to make it happen an uninterrupted sequence of operations has numerous advantages such as: higher production speed, Operational safety, degradation of the gesture

price of the finished product.

The automatic machine for processing connecting wires according to the invention is characterized by combining a storage unit *, a wire unwinding unit, the unwinding speed of which can be regulated by an electrical element, which depending on the wire on a balanced one that interacts with the electrical organ Arm exerted tensile force is adjustable, a marking unit with pressure elements controlled in such a way that mark each wire length at least once will see, a length measuring and cutting organ and a Wire stripping unit, the length measuring organ having means that after measuring a predetermined length of wire. the cutting and stripping cycle and the = marking cycle start a transfer unit with a conveyor belt constant, adjustable speed, a positioning device with means for adjustable braking of the wire depending on the speed of the conveyor belt and the mass of the wire and guiding, holding and ejecting elements, by a position control device accordingly

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cooperate in a predetermined cycle, the Control device also directly or indirectly the Measuring, cutting and stripping unit and the subsequent one Makes the insertion unit effective, with each unit having means to shut down the machine in the event of a faulty operation. is provided.

The invention is explained in more detail with reference to the embodiment shown in the drawing. Show it: 1 shows the basic diagram of the machine, FIGS. 2a and 2b the wire unwinding unit the machine,

Fig. 3 shows a known stripping member, Fig. H the stripping member in another embodiment,

5 shows a transfer unit for the delivery the wire lengths to the insertion unit.

The automatic connecting wire processing machine includes a number of units for performing the processing in a certain order. The basic diagram according to FIG. 1 shows the most important units * a supply unit 1, a wire unwinding unit 2 for unwinding the wire from supply spools of unit 1, a marking unit 3, a length measuring, cutting and stripping unit k, a transfer unit 5 »an insertion unit 6.

The wire is supplied by a storage unit with two types of storage reels. For wires

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with a small diameter, each spool is on top of the stationary one Spindle attached to a frame, the wire windings being withdrawn by the unwinding unit 2. For The coils with the windings rest on wires with a larger diameter on rollers, which are set in rotation by the wire drawn off from the unwinding unit 2.

The storage unit can contain an equal number of coils as the number of wires to be treated different diameter.

The unwinding of a wire from a reel often requires too great a tensile force, which is not from the Units for further operations can be delivered. For example, it is not possible to drive the marking rollers unit or the measuring unit for the wire unwinding, so that it is necessary to provide an unwinding unit 2.

On the one hand, this unity is sufficient Pulling force to unwind the wire and on the other hand it feeds the following units without the to overcoming tensile forces are higher than those caused by the wire's own weight.

FIGS. 2a and 2b show such an unwinding unit. The wire wraps around a drive roller 8 on the shaft of a motor 7i via a one turn Speed controller is powered, the wire from a Drucki'olle 9 is pressed. The turn is thereby formed and sustained that wire over

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the disks 10 and 11 is guided. The wire then runs over a disk 12, which is held by an arm 13 with a counterweight 14 which is arranged on a shaft 15. This shaft adjoining the axis of the potentiometer 16 is controlled by the speed control of the motor. The wire then runs over a disk 17, the axis of which also carries the disk 11, and from there over a disk 18 on the axis of the disk 12 which is carried by the arm 13. The wire is then fed to the next unit. Electrical contacts 19 and 20 at each end of the maximum permissible pivoting range of the arm 13 are used to stop the bending unit 2 and the other units of the machine. A tensile force which exceeds a predetermined value, dx & is exerted by the drive rollers of the next following unit, pivots the arm 13 in the direction of the arrow X (FIG. 2a). The arm 13 operates the potentiometer i6 to increase the speed of the motor 1, thereby delivering more wire. Conversely, if less wire or no wire at all is to be fed, i.e. if the pulling force is lower than the predetermined value, the arm rotates in the direction opposite to the arrow X, whereby the potentiometer 16 reduces the motor speed and the motor 1 comes to a standstill.

The markings are known by a

Marking unit 3 attached to the wire. One or more Printing presses 21 are arranged in order and

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the pressure rhythm depends on the desired wire lengths regulated. Safety organs enable locking in the In the event of breakage of the plastic pressure tape used part. ' These printing presses 21 contain a heated, movable, stamps bearing the markings; the ribbon moves between the wire and the punch and becomes partial pressed against the wire surface. The unprinted tape is unwound from a roll and fed automatically. fj | In view of the fragility of the tape, the Marking unit 3 has a double safety device for locking the drive: if a torn tape breaks and if it is exhausted Supply spool, photoelectric elements are provided for these two functions.

The measuring, cutting and stripping of the wire lengths take place in the same unit k. This unit works as follows: Drive rollers 23 guide the wire over a measuring wheel 22 which records the wire λ to be cut

length is determined and that controls the pneumatic system of the unit to generate a pulse, whereby the wire stopped, held, cut off and stripped off. After these processes, a stream of compressed air leads the cut, stripped wire to the output of the unit to. The distance that the wire must travel before it is clear of the machine is proportionate large and the ejection speed is difficult to control. Ks have made arrangements to accommodate this unit in the machine. A wiper unit known

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the kind is in Pig. 3 shown. The cutting head 30 contains the cutting knives 31 and the stripping knives 32, which are at a certain distance from the cutting knives 31, the wire being held by a clamp 33. After the wire and the sheath have been cut, a piston "} h moves in a cylinder (not shown) which is attached to the clamp 33" and pushes the wire in the direction of arrow Y, whereby the piece of wire between the knives 31 and 32 is entirely The positions of the clamp 33 and the plunger Jk do not allow the wire to be released quickly as the plunger 3h is aligned with the clamp 33 and coaxial with the wire with the wire being passed through the plunger, Fig. k shows A piston in a cylinder 3 '+' is arranged on a stand 35 in such a way that it lies parallel to the wire to the side of the terminal φ 36. The terminal 36 is attached to the end of a bracket 36 which is rotated about a fixed axis 37 which is mounted on the stand 35. The piston in the cylinder 3 ^ 'acts on the other end 38 of the bracket 36. As shown in FIG.

Means, responsive to the pulse supplied by the measuring wheel 22, which are provided for initiating the cycle of the unit h , control the cycle of the marking unit 3.

The transfer and placement of the wire With respect to a clamping unit 6, a unit is determined

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5 after a patent application by the applicant on the same date. This transmission unit 5 consists of an endless conveyor belt A driven at constant speed and a brake and wire holding device B. The pressure of the brake shoe D on the guide C is determined in such a way that the A wire end comes to rest in a very precisely defined position for the next insert unit 6. An air jet pipe enables the wire to be ejected and frees the transfer unit 5 and the insertion unit 6 for a new cycle. The inserting unit 6 is formed by a group of automatic inserting presses G of a known type. The presses G, the number of which is equal to the usual number of sleeves or clamps, are arranged on a rotating support. A locking member of the carrier offers the possibility of arranging the insert press with the sleeves required for processing in alignment with the transfer unit 5.

When the insertion processing is finished, the ejecting device of the transfer unit 5 becomes effective and throws the wire length provided with a clamp into a bucket in which the wires are arranged.

The control of the machine is illustrated in the basic diagram of Fig. 1 *

'/ u The beginning of the IJors to Lungs cycle is after

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in the supply unit 1, the supply reel with the desired Wire is selected, the wire end over the drive rollers and disks of the bending unit 2 in the following Sequence: Disc 10, looped over the Drive roller 8, disc 11, disc 12, Seheiben 17 and then 18; then the wire is fed into the path to the marking unit 3. The wire is by means of the motor 7 with variable speed handled (Fig. 2).

The motor speed is determined automatically according to the discharge speed, so that the tension of the wire in question in the marking unit 3 is very low. This tension is regulated by the counterweight 14 of the arm 13 with the disks 12 and 18. When the tensile force on the wire changes, the arm swivels in one direction or the other and acts directly on the potentiometer 16 of the electrical supply voltage of the motor.

As the pulling force increases, the motor speed increases, causing the arm to move in the direction of the arrow X rotates (Fig. 2a) and assumes a central position. When the pulling force is reduced, the arm swings into the opposite direction, whereby the resulting rotation of the potentiometer slows the motor speed. When the supply roll or the unwinding unit is blocked no wire meal "is fed in, which prevents the rotation of the Arm 13 exceeds the position corresponding to the maximum permissible tensile force and an electrical contact 20 is

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makes. When there is no more wire on the supply roll, the arm 13 is no longer kept in equilibrium and comes into contact with an electrical contact 19 in an outermost position. Closing the contacts leads The stopping of the motor 7 of the unwinding unit 2 and the stopping of the other units via a relay system the machine.

The wire passed through the marking unit 3 and into the measuring-cutting-stripping unit h is then subjected to a number of processes.

The desired wire length is set on the scale of the measuring element with the unit h . The wire is moved by a drive roller 23 which interacts with the measuring wheel 22. The drive roller 23 ', which is connected to the piston of a pneumatic cylinder, is movable, while the measuring wheel 22 is fixedly mounted. When a predetermined wire length is reached, the counter of the measuring wheel 2'2 generates an impulse which, on the one hand, controls the cutting and stripping elements and, on the other hand, controls the marking unit 3. The impulse causes the downward movement of the plunger 21 on the wire in the rhythm of the cutting element. In this way, each cut and stripped length of wire is marked, once.

The marking unit. 3 contains security organs

to indicate the end of the print ribbon and a ribbon break. • These safety devices that are connected to the relay system control the locking of all units of the machine.

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The impulse received by the cutting and stripping elements causes the wire to be clamped by means of clamps 33 attached to both sides of the cutting head 30, whereupon the cutting knives 31 and the stripping knives 32 are moved down while the clamps 33 pull the wire on in order to strip off the severed sheath parts of the wire . During this cycle the drive roller 23 assumes such a low position that it does not carry the wire with it. The terminals 33 then release the wire length so that a new cycle can begin. Immediately below the clamp 33 connected to the cylinder 3 ^ ¹ , a conveyor belt A, which forms part of the transfer unit 5, removes the wire length at a certain constant speed by means of a motor with electrical speed control. The supply circuit of the motor is connected to the relay system and is interrupted if one of the safety devices of the machine takes effect * The speed of the conveyor belt A is regulated according to the length and diameter of the wire.,

The T7 transfer unit located behind the conveyor belt A. (Fig. 5) contains a guide C-, a clamping element E and a brake shoe D. These elements are connected to pneumatically controlled pressure cylinders. The one with the Guide C interacting brake shoe D can brake the wire and hold it in a precisely defined position. These The position is regulated with great accuracy by applying compressed air to the control cylinder of the brake shoe D.

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which pressure leads to a very specific one Value is held. When the wire has reached this position, a photocell F detects its presence and controls it by an electrical switch a pneumatic, logical system that the insert unit 6 effective, the Brake shoe D releases, the guide C lifts, as well as the clamping element E and finally the ejection of the wire causes. ^

A time controller built into the transmission unit 5 controls the feeding of a new length of wire to the cut-off with a time period leading to the ejection and stripping unit 4. The wire length is thus' a large part of the distance between the unit 4 and the unit 5 had already been covered at the time that the ejection is finished.

The clamping element E of the unit 5 gives the wire

free at the same time as ejection, i.e. in an instant,

in which the guide C moves upwards. A compressed air Jet from the nozzle blows the wire away immediately after the insertion press moves upward. The length of the The jet pipe can be adjusted to the length of the wire by creating a number of jet openings using sliders be blocked.

The feed to the conveyor belt, its length

is equal to the maximum length of the wires to be processed, with a period of time leading to the ejection, handling very short pieces of wire without dead time.

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The insertion unit 5 contains a press G

with a sleeve or clamp feed member, and safety device, which take effect when the feed is interrupted or incorrectly fed. These security organs lead over the relay system brings about the locking of the other machine units.

The interaction of the different elements of the machine with the pneumatic, electronic ones or; mechanical units of the aforementioned type results in a fully automatic machine with high efficiency,

Such a machine has a capacity of 4200 connecting wires with a length of Q.70 m per Hour. The lateral ejection of the wires provided with connection sleeves or terminals by means of a compressed air jet Allows the wires to be properly organized so that there is no confusion when the connecting wires are used afterwards is avoided. This ejection also enables the wires to be picked up by a second conveyor element for transfer to another unit for any processing.

28/1209

Claims (1)

FPHN. 3825 - 15 PATENT CLAIM . Automatic machine for processing connection wires, characterized by the combination of a Storage unit, an unwinding unit, its unwinding speed can be regulated by means of an electrical organ, which depends on the tensile force of the wire a balancing arm is adjustable, which arm interacts with the electrical organ, a marking unit with pressure organs that are controlled in such a way that every » Wire length is provided with a marking at least once, a length measuring, cutting and stripping unit, whose length measuring element has means that after measuring a predetermined wire length start the cutting and stripping cycle and the marking cycle, a transfer and feed unit with a conveyor belt with constant, adjustable speed, a set-up device with Means for adjustable braking of the wire as a function of the speed of the conveyor belt and the mass of the wire and guiding, holding and ejecting elements, which cooperate through a position control device according to a predetermined cycle, -which control device also directly or indirectly the measuring-cutting-stripping unit and makes the next successive insertion unit effective, each unit having means for Locking of the machine is provided in the event of a malfunction. 009828/1209