DE102014016381A1 - Bobbin for a braiding machine, braiding machine and method for controlling and regulating a tension applied to a braiding material - Google Patents

Abstract

The invention relates to a bobbin for a braiding machine comprising: a material storage for receiving and supplying a braiding material, a drive unit for driving the material storage, a carriage which is displaceable or slidably disposed on or in the beater and has a pulley for the braiding material, at least one Position sensor for detecting the position of the carriage, and a communication module for receiving and transmitting data. Furthermore, the invention relates to a braiding machine and to a method for controlling and regulating a tension applied to a braiding material

Description

The present invention relates to a bobbin for a braiding machine, a braiding machine and a method for controlling a tension applied to a braiding material.

Conventionally, a tension applied to a braiding material, such as a thread, must be mechanically controlled so as to avoid sagging of the braiding material and, on the other hand, not apply excessive tension to the braiding material. Describes this DE 10 2008 033 561 A1 a bobbin for a braiding machine with a bobbin, which is associated with a brake system with at least one brake shoe and a thread tensioning device. The brake system further has a trigger to trigger the brake system after reaching a predetermined voltage and supply a predetermined thread length.

In this clapper, the tension applied to the braiding material or thread varies from a point of time shortly after release until the braking system is re-engaged and thereafter until the trigger is released again. In addition, the braiding material must be wound onto the bobbin before braiding. In such a bobbin, the braiding angle of a product to be braided can not be changed because braided material unwound from the bobbin can no longer be wound up by itself. In addition, the voltage applied to the braiding material or the thread tension is fixed by the built-in brake system spring and can not be varied or varied only by disassembling the brake system and replacing the spring.

However, it would be desirable to provide a beater that can perform a braiding operation in a more flexible manner without requiring disassembly and corresponding set up times of the bobbin of the braiding machine.

The object of the invention is thus to provide a bobbin and a braiding machine, which allow a more flexible braiding without remodeling of the bobbin or braiding and appropriate set-up time.

This object is solved by the features of the independent claims. Advantageous developments are defined in the dependent claims.

According to a first aspect, there is provided a beater for a braiding machine comprising:
a material storage for receiving and feeding a braiding material,
a drive unit for driving the material storage such that braided material is taken up or supplied,
a carriage which is displaceable or displaceable on or in the clapper and has a deflection roller for the braiding material,
at least one position sensor for detecting the position of the carriage,
a communication module for receiving and transmitting data concerning the position of the carriage and possibly data concerning the braiding material, amount of material, energy state of the power supply, etc.

The carriage is displaced by the tension applied to the braiding material and the position of the carriage can be precisely detected by the position sensor. Thus, the tension applied to the braiding material can be detected in accordance with the displacement of the carriage.

By appropriate data input into the communication module braiding material can be supplied to reduce the voltage, or braiding material can be resumed through the material storage to increase the voltage. In other words, upon the occurrence of excessive voltage, more material is supplied from the material reservoir to reduce the tension of the braid material. In contrast, upon detecting too low a tension of the braiding material, less braiding material is fed during the braiding process or resumed through the material reservoir to increase the tension of the braiding material.

By the tension of the braided material on the communication module of the bobbin is arbitrarily predetermined, the bobbin can be adapted to a braiding process of another product with respect to braid angle and tension of the braiding material in a simple manner and in particular there is no set-up time for changing the bobbins of the braiding machine. In other words, only a different tension of the braiding material is input via the communication module to adjust the bobbins with respect to an alternative braiding operation.

Preferably, the carriage is urged to a neutral position by at least one first biasing means and is substantially in two by a force applied to the carriage opposite directions from this neutral position displaced.

Further preferably, the bobbin on an energy storage, such as a battery or a rechargeable battery, and / or a computing unit in communication with the communication module.

Preferably, at least a second biasing means for urging or displacing the carriage is provided, which exerts a higher restoring force on the carriage than the first biasing means.

Preferably, a voltage of the braiding material via the communication module is arbitrarily predetermined.

More preferably, the drive unit is drivable in two substantially opposite directions to supply the braid material from the material storage and return to the material storage.

By being drivable in two substantially opposite directions, the braiding material can not only be fed from the material reservoir to the braiding process, but also returned to the material reservoir, which is advantageous when the braiding angle in a product is to be changed. Thus, the flexibility of a braiding operation is considerably increased.

More preferably, the material storage on at least one coil for winding and / or unwinding of the braiding material. Preferably, the coil is configured to be easily replaceable.

According to a further aspect there is provided a braiding machine comprising a control device for prescribing a tension to be applied to the braiding material and at least one clapper described above. Preferably, the braiding machine comprises a plurality of bobbins configured and constructed as described above.

However, the braiding machine can also have conventional clappers with a mechanical thread tensioning device and / or a mechanical brake system. In this case, the above-described bobbins can be combined with the conventional bobbins in any order or arrangement.

According to a further aspect, the invention provides a method for controlling a tension applied to a braiding material, comprising the steps of: at least partially wrapping a movable deflection roller of a bobbin with the braiding material, determining a movement or displacement of the movable deflection roller due to the tension of the braiding material and receiving or dispensing braid material through a material store to alter the tension of the braiding material.

Preferably, a desired voltage of the braiding material is arbitrarily adjustable or predetermined by the voltage of the braiding material is controlled or regulated to the desired voltage.

In particular, the method comprises a step of receiving a braiding material onto a material reservoir of a bobbin and feeding the braid material therefrom, wherein the material reservoir is further driven to receive or supply the braiding material.

Furthermore, the method comprises guiding the braiding material about a deflection roller of a carriage, which is displaceable or displaceable on or in the clapper. Furthermore, the position of the carriage is preferably detected, and further preferably data concerning the position of the carriage (and possibly data relating to a braiding material, a quantity of material and / or a power state of the power supply) is transmitted and / or received by means of a communication module.

The carriage can be displaced or displaced by the tension applied to the braiding material and / or the position of the carriage can be precisely detected by the position sensor. Thus, the tension applied to the braiding material can be detected and / or influenced in accordance with the displacement of the carriage.

By appropriate data input into the communication module braiding material can be supplied to reduce the voltage, or braiding material can be resumed through the material storage to increase the voltage. In other words, according to a preferred embodiment of the method, when excessive stress occurs, more material may be supplied from the material reservoir to reduce the tension of the braiding material. Conversely, upon detecting too low a tension of the braiding material, preferably less braiding material may be supplied during braiding or resumed through the material storage to increase the tension of the braiding material.

By the tension of the braiding material (in particular via the communication module of the bobbin) can be predetermined or determined as desired, For example, a braiding operation with respect to braiding angle and tension of the braiding material can be easily adapted to another product and, in particular, no set-up time for changing the braiding of the braiding machine occurs. In other words, only a different tension of the braiding material can be adjusted, in particular to adapt the clappers with respect to an alternative braiding process.

Preferably, the method further comprises biasing the carriage (in particular by at least first biasing means) toward a neutral position whereby the carriage can be displaced out of that neutral position in two substantially opposite directions by a force applied to the carriage.

More preferably, the method comprises the provision of an energy storage, such as a battery or a rechargeable accumulator, and / or by a computing unit in communication with the communication module.

Preferably, the method comprises second biasing (in particular by at least one second biasing means) of the carriage provided with a higher restoring force on the carriage than the restoring force applied by the first biasing means.

Preferably, a voltage of the braiding material (in particular via the communication module) is arbitrarily specified.

More preferably, the drive unit is drivable in two substantially opposite directions to supply the braid material from the material storage and return to the material storage. By driving the drive unit in two substantially opposite directions, the braiding material can not only be fed from the material storage to the braiding process, but also returned to the material storage, which is advantageous when the braiding angle in a product is to be changed. Thus, the flexibility of a braiding operation is considerably increased.

More preferably, the braiding material is wound on at least one coil of the material storage and / or unwound from this.

More preferably, the material can be transferred from a bobbin with a full bobbin to an adjacent bobbin with an empty bobbin. This method is necessary in the production of so-called closed-loop braids, d. H. Braids that have no wire ends on one side, so that injury or perforation of a body vessel can be avoided.

The invention will now be explained in more detail with reference to the accompanying drawings with reference to an embodiment.

1 shows a perspective view of a clapper.

2 shows the clappers of 1 from the other side also in a perspective view.

3 shows a plan view and a side view of the bobbin 1 ,

As in particular in the 1 and 2 is shown, the clapper of the embodiment has a movably arranged carriage 20 on, on the clapper 1 is arranged displaceable or displaceable. On the sledge 20 is a movable pulley 22 fixed according to the displacement of the carriage 20 relocated.

Furthermore, the clapper has 1 a pair of fixed pulleys 24 . 24 on which an unillustrated braiding material is looped. Due to the tension applied to the braiding material, a force is applied to the displaceable deflection roller 22 applied the sled 20 shift accordingly. Depending on the size of the applied voltage is the carriage 20 shifted from its neutral position in a first direction or in a second opposite direction.

A voltage in the range of about 0.05 N to about 20 N is applied, preferably a voltage of about 2 N to about 10 N, most preferably in a range of about 5 N to about 8 N.

Preferably, a first biasing means 30 for example, arranged in the shape of a coil spring, which is the carriage 20 in the neutral position or moves to this, if no tension is applied to the braid material. By applying a tension on the braiding material, the carriage 20 against the bias of the first biasing means 30 moved out of its neutral position.

To get a reference for the position of the sled 20 To obtain, also end position sensors (not shown) may be arranged.

Furthermore, the clapper has 1 a material storage 12 , for example in the form of a coil, for receiving and unwinding a braiding material. Thus, the braiding material becomes from the material storage 12 over the fixed pulleys 24 . 24 as well as the displaceable deflection roller 22 guided and supplied to a braiding or a braid mandrel or the like (not shown).

The material storage 12 is further with a drive 14 coupled, the material storage 12 for feeding or for resuming the braiding material causes. Preferably, the drive 14 as an electric motor with a corresponding gear (in the illustrated embodiment, the transmission is preferably designed by means of two bevel gears angular) formed to the material storage 12 in the form of a coil to turn in one direction or in the opposite direction.

Preferably, the clapper has a frame on which all components except the carriage 20 can be fixed or attached. The sled 20 is disposed along a guide attached to the frame, such as a rail, a guide groove or the like, displaceable or movable.

Preferably, the drive 14 designed as a stepper motor, which can be operated exactly without additional sensor for position feedback. Such a stepping motor can be rotated stepwise by a minimum angle or a multiple of the angle (step). Depending on its design, the stepping motor may be designed as a reluctance stepping motor, permanent stepping motor, hybrid stepping motor, single-phase stepping motor, servomotor or the like.

However, the invention is not limited thereto and the material storage 12 can also be designed differently and a different drive 14 as long as they are suitable for supplying the braiding material to the braiding process and / or again through the material reservoir 12 for example, to change the braiding angle.

To change the braiding angle, the following procedure can be performed:
First, the braiding process is interrupted in order then to relocate the braiding mandrel. When the braiding angle is reduced, braiding material is fed in or, when the braiding angle is increased, material is absorbed, with the braiding mandrel moving in the direction of the clapper 1 emotional. Meanwhile, the voltage is maintained by the material storage 12 is driven accordingly. Finally, the braiding process can be resumed.

Preferably, the clapper has 1 furthermore, at least one energy store 16 for example, in the form of a battery or a rechargeable battery. The energy storage 16 serves the power supply of the drive 14 and / or the energy supply of a likewise in the clapper 1 arranged communication module 18 for receiving and sending data to a control device (not shown) for prescribing a voltage to be applied to the braiding material.

As accumulator, in particular, a nickel-metal hybrid accumulator, a lithium-ion accumulator, a nickel-cadmium accumulator or the like is suitable.

Next, the clapper 1 be designed so that no energy storage 16 must be used when the clapper gets the energy via sliding contacts or via an alternating electric field directly from the machine.

More preferably, the clapper 1 a second biasing means (not shown) having a different bias voltage from the bias of the first biasing means 30 applies. By arranging this second biasing means, the tension of the braiding material can be more precisely controlled because an overall spring rate resulting from the combination of the two different biasing means can be made variable. In addition, the second biasing means leads to a larger force range. The first biasing agent 30 can be designed as a tension spring and the second biasing means can be designed as a compression spring. The springs are preferably on the opposite sides of the carriage 20 arranged.

The energy storage 16 For example, can be supplied via sliding contacts from the outside with the appropriate energy and / or by induction and / or storage of kinetic energy and / or by a charging device in the case of training the energy storage 16 as a rechargeable accumulator.

Furthermore, preferably at least one position sensor (not shown) for detecting the position of the carriage is provided 20 on the clapper 1 arranged. In this case, this position sensor is used to measure the distance or the displacement of the carriage 20 out of its neutral position. In particular, the position sensor can be designed as a potentiometer transmitter with a slider on a resistor and the position can be detected by detecting the electrical resistance. However, the position sensor can also be designed as an inductive sensor or as a capacitive sensor, in which the inductance of a coil or the capacitance of a capacitor changes. Another possibility of forming the position sensor is an optical position sensor or an incremental encoder, which can detect corresponding pulses, for example from teeth of a rack. One Incremental sensor and a magnetic tape which has alternately arranged magnets can also be used.

A braiding process with the clapper 1 of the embodiment will now be described.

First, a braiding angle and a desired tension of the braiding material are inputted via a control device (not shown). These data as well as optionally further data are transmitted from the control device to at least one clapper 1 or a variety of bobbins 1 output and via the communication module 18 of the clapper 1 receive.

The communication module 18 controls or regulates the drive 14 to supply the appropriate braiding material to the braiding process. By the occurrence of the tension in the braiding material, a force is applied to the displaceable deflection roller 22 applied the sled 20 to a displacement from the neutral position against the biasing force of the first biasing means 30 causes. The position sensor detects the displaced position of the carriage 20 and the signal of the position sensor is from the communication module 18 receive.

When the shifted position of the carriage 20 does not correspond to the predetermined setpoint voltage of the braiding material, controls the communication module 18 the drive 14 such that more or less braiding material is fed to the braiding process, thereby changing the tension of the braiding material. By detecting a correspondingly changed position of the carriage 20 can the predetermined target voltage of the braided material by the communication module 18 be managed.

Alternatively, the communication module 18 the data concerning the position of the carriage 20 or send the voltage of the braiding material to the central control and regulating device and the central control and control device can corresponding data to the communication module 18 send to the drive 14 to control accordingly, so that the predetermined target voltage is achieved in the braiding material.

As another alternative, the communication module sends 18 a desired position to a motor controller 19 and the engine governor 19 regulates the actual position to the predetermined target position of the carriage 20 ,

To control the tension applied to the braiding material, the movable diverting pulley becomes 22 wrapped at least partially with the braiding material or the braiding material is at a certain angle to the movable guide roller 22 wrapped. Due to the tension occurring in the braiding material, a force is applied to the carriage 20 attached movable pulley 22 exercised the sled 20 relocated or moved into its leadership.

The position sensor (not shown) detects the position of the carriage 20 and sends a corresponding signal to the communication module 18 or the control device. From the signal concerning the position of the carriage 20 the tension of the braiding material is calculated or estimated.

The tension of the braiding material can be achieved by driving the material reservoir 12 through the drive unit 14 be increased by the material storage 12 less braiding material feeds the braiding process or picks up wicker material to increase the tension. On the other hand, the tension of the braiding material can be reduced by storing the material 12 is driven so as to supply more braiding material.

The communication module 18 or the control device can control the tension of the braiding material by detecting the tension and driving the material reservoir 12 control or regulate. In this way, the tension of the braiding material can be controlled or regulated very precisely and can be varied as desired, because only a corresponding input can be made in the control and regulating device, the corresponding setpoint values to the communication module 18 of the clapper 1 sends or transmits.

The clappers 1 can thus contribute to a very flexible braiding and vary the voltage generated in the braid arbitrarily. It is in particular no conversion of the clapper 1 required to vary a tension or to change a braiding angle in a braiding process. The clappers 1 of the embodiment thus lead to an improved lichen product, which can be produced in a fast and flexible manner with little or no set-up time. Another advantage is that the braid angle can be changed quickly even during the braiding process by passing the braid material through the material reservoir 12 is resumed while the predetermined material tension is substantially maintained.

LIST OF REFERENCE NUMBERS

1

tongue

12

Material storage (coil)

14

drive

16

energy storage

18

communication module

19

motor controller

20

carriage

22

displaceable deflection roller

24

fixed pulley

30

first biasing means

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DE 102008033561 A1 [0002]

Claims (10)

Clapper ( 1 ) for a braiding machine with: a material storage ( 12 ) for picking up and feeding a braiding material, a drive unit ( 14 ) for driving the material storage ( 12 ), a sledge ( 20 ), on or in the clapper ( 1 ) is arranged displaceably or displaceably and a deflection roller ( 22 ) for the braiding material, at least one position sensor for detecting the position of the carriage ( 20 ), and a communication module ( 18 ) for receiving and sending data. Clapper ( 1 ) according to claim 1, wherein the carriage ( 20 ) by at least one first biasing means ( 30 ) is urged to a neutral position and by one on the carriage ( 20 ) applied force in two substantially opposite directions from this neutral position is displaced out. Clapper ( 1 ) according to claim 2, wherein at least a second biasing means for urging the carriage ( 20 ) is provided, which has a greater restoring force on the carriage ( 20 ) than the first biasing means ( 30 ). Clapper ( 1 ) according to one of the preceding claims, further comprising an energy store ( 16 ), such as a battery or a rechargeable accumulator, and / or a computing unit in communication with the communication module ( 18 ). Clapper ( 1 ) according to one of the preceding claims, wherein a tension of the braiding material via the communication module ( 18 ) is arbitrarily specified. Clapper ( 1 ) according to one of the preceding claims, wherein the drive unit ( 14 ) is drivable in two substantially opposite directions to the braid material from the material storage ( 12 ) and to the material storage ( 12 ). Clapper ( 1 ) according to one of the preceding claims, wherein the material store ( 12 ) has at least one coil for winding and / or unwinding of the braiding material. Braiding machine with a control or regulating device for prescribing a voltage to be applied to the braiding material and at least one clapper according to one of the preceding claims. Method for controlling a tension applied to a braiding material, comprising the steps of: at least partially wrapping around a movable deflection roller ( 22 ) of a clapper ( 1 ) with the braiding material, determining the tension of the braiding material due to a movement or displacement of the movable deflection roller ( 22 ), Picking up or delivering braiding material through a material store ( 12 ) for changing the tension of the braiding material. The method of claim 9, wherein a desired voltage of the braiding material is arbitrarily adjustable or can be predetermined.

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