Wireless jacquard needle block and warp knitting machine

Abstract

The invention relates to a wireless jacquard needle block and a warp knitting machine. The wireless jacquard needle block comprises a signal protection circuit, a control circuit, a driving circuit and a yarn guide needle, the input end of the signal protection circuit is used for accessing a control signal, the output end of the signal protection circuit is connected with the control circuit, the control circuit is further connected with the input end of the driving circuit, the output end of the driving circuit is connected with a yarn guide needle, and the signal protection circuit is used for carrying out anti-interference processing on the accessed control signal and outputting the control signal subjected to the anti-interference processing to the control circuit; and the control circuit outputs a driving signal according to the control signal subjected to anti-interference processing, so that the driving circuit controls the operation of the yarn guide needle according to the driving signal. The signal protection circuit of the wireless jacquard needle block can effectively suppress interference and transient voltage impact generated by a high-voltage power supply, so that the control circuit outputs a more stable and reliable driving control signal according to the signal subjected to interference resistance, a yarn guide needle is accurately controlled through the driving circuit, and the use reliability of the wireless jacquard needle block is improved.

Description

Technical Field

[0001] This application relates to the field of textile machinery and equipment, and in particular to a wireless jacquard needle block and a warp knitting machine. Background Technology

[0002] In warp knitting machines, guide needles work in conjunction with groove needles or latch needles to achieve efficient loop formation. During machine setup, the guide needles must be positioned in the center of the groove needles or latch needles to prevent collisions and damage during operation. Therefore, the control circuit in the wireless jacquard needle block needs to be kept powered on to control the guide needles of the entire block, ensuring each guide needle is centered on the latch needle.

[0003] However, when the wireless jacquard needle block is powered on, the power supply includes not only the low-voltage power supply (such as 3.3V) to the control circuit, but also the high-voltage power supply (such as 180V). The high voltage may affect the low-voltage control circuit through circuit coupling and other means, causing damage or abnormal operation of the components in the control circuit, which will lead to the failure of the circuit on the needle block and reduce the reliability of the wireless jacquard needle block. Summary of the Invention

[0004] Therefore, it is necessary to provide a highly reliable wireless jacquard needle block and a warp knitting machine.

[0005] A wireless Jacquard needle block includes: a signal protection circuit, a control circuit, a drive circuit, and a yarn guide needle; the input terminal of the signal protection circuit is used to receive a control signal, the output terminal of the signal protection circuit is connected to the control circuit, the control circuit is also connected to the input terminal of the drive circuit, and the output terminal of the drive circuit is connected to the yarn guide needle.

[0006] The signal protection circuit is used to perform anti-interference processing on the incoming control signal and output the anti-interference processed control signal to the control circuit; the control circuit outputs a drive signal according to the anti-interference processed control signal, so that the drive circuit controls the yarn guide needle to run according to the drive signal.

[0007] The aforementioned wireless Jacquard needle block includes: a signal protection circuit, a control circuit, a drive circuit, and a yarn guide needle. The input terminal of the signal protection circuit is used to receive the control signal, and its output terminal is connected to the control circuit. The control circuit is also connected to the input terminal of the drive circuit, and its output terminal is connected to the yarn guide needle. The signal protection circuit performs anti-interference processing on the received control signal and outputs the anti-interference processed control signal to the control circuit. The control circuit outputs a drive signal based on the anti-interference processed control signal, enabling the drive circuit to control the operation of the yarn guide needle according to the drive signal. Therefore, the signal protection circuit can effectively suppress interference and transient voltage surges generated by the high-voltage power supply, allowing the control circuit to output a more stable and reliable drive control signal based on the anti-interference signal. This, in turn, enables the drive circuit to precisely control the yarn guide needle, ensuring it is in the correct position. This reduces the risk of yarn guide needle control errors or control circuit failure caused by signal interference, allowing the wireless Jacquard needle block to achieve reliable hot-swappable operation and improving its overall reliability.

[0008] In one embodiment, the wireless Jacquard needle block further includes a first power protection circuit, wherein the driving circuit is connected to a first power source via the first power protection circuit, and the first power protection circuit is used to suppress surges in the first power source.

[0009] In this embodiment, during hot-plugging or when the power supply is unstable, the first power protection circuit can suppress surge current changes, keeping the input voltage supplied to the drive circuit stable, thereby ensuring the running accuracy of the guide needles. Moreover, by suppressing surge current and overvoltage during hot-plugging, the service life of the connector and drive circuit can be improved, enhancing the operational stability and safety of the wireless Jacquard needle block, thus providing a reliable guarantee for the continuous and stable operation of the warp knitting machine.

[0010] In one embodiment, the first power protection circuit includes a capacitor, and the wireless Jacquard pin block includes a first power line; the first power line includes a serpentine PCB trace segment, the input end of the serpentine PCB trace segment is used to connect to the first power supply, the output end of the serpentine PCB trace segment is connected to the driving circuit and the first end of the capacitor, and the second end of the capacitor is grounded.

[0011] In this embodiment, the serpentine PCB trace routing method introduces parasitic inductance. The inductance and capacitance form an LC filter to suppress the surge current rate of change. During hot-swapping, the inductance of the serpentine PCB trace can also slow down the current rate of change, reducing the risk of noise coupling to the control signal.

[0012] In one embodiment, the wireless Jacquard pin block further includes a second power protection circuit and a power conversion circuit; the input terminal of the power conversion circuit is connected to a second power source via the second power protection circuit, which is used to suppress surges in the second power source; the output terminal of the power conversion circuit is connected to the control circuit, which is used to convert the second power source into a control power source corresponding to the control circuit.

[0013] In this embodiment, during hot-plugging or when the power supply is unstable, the second power protection circuit can suppress surge current changes, keeping the input voltage supplied to the control circuit stable. This results in a more accurate output drive signal, thereby ensuring the running precision of the guide needles. Furthermore, by suppressing surge current and overvoltage during hot-plugging, the lifespan of the connector and control circuit can be improved, enhancing the operational stability and safety of the wireless Jacquard needle block, thus providing a reliable guarantee for the continuous and stable operation of the warp knitting machine.

[0014] In one embodiment, the second power protection circuit includes a first transient voltage suppression diode, the cathode of which is connected to the input terminal of the power conversion circuit, and the anode of which is grounded.

[0015] In this embodiment, when the second power supply generates a surge voltage due to factors such as hot-plugging or electrostatic discharge, the first transient voltage suppression diode can quickly conduct after the voltage exceeds the breakdown voltage, clamping the overvoltage to below the clamping voltage, thus preventing the power conversion circuit from being damaged by overvoltage breakdown and improving the reliability of the wireless Jacquard pin block.

[0016] In one embodiment, the wireless Jacquard pin block further includes a first reverse connection protection circuit and a second reverse connection protection circuit. The first reverse connection protection circuit is disposed between the first power protection circuit and the driving circuit, and the second reverse connection protection circuit is disposed between the second power protection circuit and the power conversion circuit.

[0017] In this embodiment, when the polarity of the first power supply is reversed due to human error or other factors, the first reverse connection protection circuit will block the reverse current through its unidirectional conduction characteristic, avoiding the risk of reverse voltage damaging the drive circuit and causing circuit failure, thereby improving the reliability and safety of the wireless Jacquard pin block. Similarly, when the polarity of the second power supply is reversed due to human error or other factors, the second reverse connection protection circuit will block the reverse current through its unidirectional conduction characteristic, avoiding the risk of reverse voltage damaging the power conversion circuit and causing circuit failure, thereby improving the reliability and safety of the wireless Jacquard pin block.

[0018] In one embodiment, the signal protection circuit includes a second transient voltage suppression diode, the cathode of which is connected to the control circuit, and the anode of which is grounded.

[0019] In this embodiment, when factors such as hot-plugging may cause control signal surges, the second transient voltage suppression diode can quickly turn on after the voltage exceeds the breakdown voltage, clamping the overvoltage to a safe voltage range, preventing the input pins of the control circuit from being damaged by overvoltage breakdown, thereby improving the reliability of the wireless Jacquard pin block.

[0020] In one embodiment, the signal protection circuit further includes a resistor, the cathode of the transient voltage suppression diode is connected to a first end of the resistor, and the second end of the resistor is connected to the control circuit.

[0021] In this embodiment, after setting a transient voltage suppression diode at the interface for accessing the control signal, a resistor is connected in series to further limit the surge current, thereby limiting the surge current amplitude during insertion and removal. This improves the hot-swapping performance of the wireless Jacquard pin block and enhances its reliability.

[0022] In one embodiment, the signal protection circuit further includes a buffer, the input of which is connected to the second terminal of the resistor, and the output of which is connected to the control circuit.

[0023] In this embodiment, the buffer can be a buffer chip. On the one hand, when transient interference occurs in the control signal, the buffer, through its high input impedance and low output impedance, can form physical isolation between the input and output terminals, blocking the transmission path of the transient interference signal and preventing the input pins of the control circuit from being damaged, thereby achieving physical isolation of transient interference from the energized signal interface. On the other hand, the buffer can increase the driving capability of the control signal output to the control circuit and improve the possible circuit overload situation.

[0024] A warp knitting machine includes a wireless jacquard needle block as described above. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this application or the conventional technology, the drawings used in the description of the embodiments or the conventional technology will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of a wireless Jacquard pin block according to one embodiment;

[0027] Figure 2 A schematic diagram of a wireless Jacquard pin block according to another embodiment;

[0028] Figure 3 This is a schematic diagram of a wireless Jacquard pin block according to yet another embodiment;

[0029] Figure 4 This is a schematic diagram of a wireless Jacquard pin block according to yet another embodiment;

[0030] Figure 5 This is a partial circuit structure diagram of a wireless Jacquard pin block according to an embodiment;

[0031] Figure 6 This is a partial circuit structure diagram of a wireless Jacquard pin block according to another embodiment;

[0032] Figure 7 This is a schematic diagram of the circuit structure of a signal protection circuit according to one embodiment;

[0033] Figure 8 This is a schematic diagram of a wireless Jacquard pin block according to yet another embodiment;

[0034] Figure 9 This is a schematic diagram of the output signal protection circuit of one embodiment;

[0035] Figure 10 This is a schematic diagram of the modules of a warp knitting machine according to one embodiment. Detailed Implementation

[0036] To facilitate understanding of this application, a more complete description will be provided below with reference to the accompanying drawings, which illustrate embodiments of the present application. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of this application will be thorough and complete.

[0037] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

[0038] It is understood that the terms "first," "second," etc., used herein may be used to describe various elements, but these elements are not limited by these terms. These terms are only used to distinguish one element from another. For example, without departing from the scope of this application, a first resistor may be referred to as a second resistor, and similarly, a second resistor may be referred to as a first resistor. Both the first resistor and the second resistor are resistors, but they are not the same resistor.

[0039] It is understood that the term "connection" in the following embodiments should be understood as "electrical connection," "communication connection," etc., if the connected circuits, modules, units, etc., have electrical signal or data transmission with each other.

[0040] It is understandable that "at least one" refers to one or more, and "multiple" refers to two or more. "At least a part of an element" refers to part or all of an element.

[0041] When used herein, the singular forms of “a,” “an,” and “the” may also include the plural forms unless the context clearly indicates otherwise. It should also be understood that the terms “comprising / including” or “having,” etc., specify the presence of the stated features, wholes, steps, operations, components, parts, or combinations thereof, but do not preclude the possibility of the presence or addition of one or more other features, wholes, steps, operations, components, parts, or combinations thereof. Meanwhile, the term “and / or” as used in this specification includes any and all combinations of the associated listed items.

[0042] This application provides a wireless jacquard pin block. For example... Figure 1 As shown, the wireless jacquard needle block includes a signal protection circuit 100, a control circuit 200, a drive circuit 300, and a yarn guide needle 400. The input terminal of the signal protection circuit 100 is used to receive the control signal, and the output terminal of the signal protection circuit 100 is connected to the control circuit 200. The control circuit 200 is also connected to the input terminal of the drive circuit 300, and the output terminal of the drive circuit 300 is connected to the yarn guide needle 400.

[0043] The signal protection circuit 100 is used to perform anti-interference processing on the incoming control signal and output the anti-interference processed control signal to the control circuit 200. The control circuit 200 outputs a drive signal according to the anti-interference processed control signal, so that the drive circuit 300 controls the yarn guide needle 400 to run according to the drive signal.

[0044] The control signals are used to control the operation of the wireless Jacquard pin blocks, and their specific types can be flexibly configured according to the actual application scenario. As an example, the control signals may include trigger angle signals and other control-related signals (such as speed adjustment signals).

[0045] The control signal is externally input, for example, through the guide bar of the warp knitting machine. In some embodiments, the wireless jacquard needle block also includes a connector, such as a spring-loaded pin connector. The guide bar includes a back plate, on which the connector of the wireless jacquard needle block is mounted, through which control signals and power are introduced. The control signal is transmitted to the control circuit 200 via the signal protection circuit 100.

[0046] The power supply provides low-voltage electricity to the control circuit 200 and high-voltage electricity (e.g., 180V) to the drive circuit 300. During hot-plugging of the connector and backplane, transient voltage on the high-voltage side may couple to the low-voltage side through parasitic capacitance, causing overvoltage or overcurrent in the control signal. In this case, the signal protection circuit 100 effectively suppresses interference and transient voltage surges generated by the high-voltage power supply, ensuring that the control circuit 200 receives a stable and reliable control signal. Subsequently, the control circuit 200 outputs a drive signal based on the stable and reliable signal, which controls the operation of the yarn guide needle 400 through the drive circuit 300, making the control process more stable and reliable. The structures of the control circuit 200, drive circuit 300, and yarn guide needle 400 are not limited and can be configured according to specific circumstances by those skilled in the art.

[0047] The aforementioned wireless Jacquard needle block includes a signal protection circuit 100, a control circuit 200, a drive circuit 300, and a yarn guide needle 400. The input terminal of the signal protection circuit 100 is used to receive control signals, and its output terminal is connected to the control circuit 200. The control circuit 200 is also connected to the input terminal of the drive circuit 300, and its output terminal is connected to the yarn guide needle 400. The signal protection circuit 100 performs anti-interference processing on the received control signals and outputs the anti-interference processed control signal to the control circuit 200. The control circuit 200 outputs a drive signal based on the anti-interference processed control signal, enabling the drive circuit 300 to control the operation of the yarn guide needle 400 according to the drive signal. Therefore, the signal protection circuit 100 can effectively suppress interference and transient voltage surges generated by the high-voltage power supply, allowing the control circuit 200 to output a more stable and reliable drive control signal based on the anti-interference signal. This, in turn, enables the drive circuit 300 to precisely control the yarn guide needle 400, ensuring that the yarn guide needle 400 is in the correct position. This reduces the risk of control error in the guide needle 400 or failure of the control circuit 200 caused by signal interference, enabling the wireless Jacquard needle block to be reliably hot-swapped and improved in terms of reliability.

[0048] In some embodiments, such as Figure 2 As shown, the wireless Jacquard needle block also includes a first power protection circuit 510. The drive circuit 300 is connected to a first power supply via the first power protection circuit 510, which is used to suppress surges in the first power supply.

[0049] The voltage value of the first power supply can be set in conjunction with the parameters of the drive circuit 300 and the guide needle 400, as well as application requirements. For example, the first power supply is a high-voltage power supply, such as a 180V power supply.

[0050] In this embodiment, during hot-plugging or when the power supply is unstable, the first power protection circuit 510 can suppress surge current changes, keeping the input voltage supplied to the drive circuit 300 stable, thereby ensuring the operating accuracy of the guide needle 400. Furthermore, by suppressing surge current and overvoltage during hot-plugging, the service life of the connector and drive circuit 300 can be improved, enhancing the operational stability and safety of the wireless jacquard needle block, thus providing a reliable guarantee for the continuous and stable operation of the warp knitting machine.

[0051] In some embodiments, such as Figure 3 As shown, the wireless Jacquard needle block also includes a second power protection circuit 520 and a power conversion circuit 600. The input terminal of the power conversion circuit 600 is connected to a second power supply via the second power protection circuit 520, which is used to suppress surges in the second power supply. The output terminal of the power conversion circuit 600 is connected to the control circuit 200, which is used to convert the second power supply into a control power supply corresponding to the control circuit 200.

[0052] The voltage value of the second power supply can be set according to specific circumstances. In some embodiments, the second power supply is a low-voltage power supply, such as 15V. The power conversion circuit 600 is used to convert the second power supply into a control power supply for the control chip in the adaptation control circuit 200. The control power supply can be 3.3V, 5V, or other voltage values. The structure of the power conversion circuit 600 can be selected according to the actual situation, and a suitable DC-DC conversion topology can be chosen. This embodiment does not limit this. In other embodiments, the second power supply can be the control power supply for the control chip in the adaptation control circuit 200, and the power conversion circuit 600 can be a voltage regulator circuit to make the power supplied to the control circuit 200 more stable.

[0053] In this embodiment, during hot-plugging or when the power supply is unstable, the second power protection circuit 520 can suppress surge current changes, keeping the input voltage supplied to the control circuit 200 stable, thereby making the output drive signal more accurate and ensuring the operating accuracy of the guide needle 400. Furthermore, by suppressing surge current and overvoltage during hot-plugging, the service life of the connector and control circuit 200 can be improved, enhancing the operational stability and safety of the wireless jacquard needle block, thus providing a reliable guarantee for the continuous and stable operation of the warp knitting machine.

[0054] In some embodiments, such as Figure 4 As shown, the wireless Jacquard pin block also includes a first reverse connection protection circuit 710, which is disposed between the first power protection circuit 510 and the drive circuit 300.

[0055] When the positive and negative polarities of the first power supply are reversed due to human error or other factors, the first reverse connection protection circuit 710 will block the reverse current through its unidirectional conduction characteristic, avoiding the risk of reverse voltage breakdown of the drive circuit 300 and circuit failure, thereby improving the reliability and safety of the wireless Jacquard pin block.

[0056] In some embodiments, the wireless jacquard pin block further includes a second reverse connection protection circuit 720. The second reverse connection protection circuit 720 is disposed between the second power protection circuit 520 and the power conversion circuit 600.

[0057] In this embodiment, when the positive and negative polarities of the second power supply are reversed due to human error or other factors, the second reverse connection protection circuit 720 will block the reverse current through its unidirectional conduction characteristics, thereby avoiding the risk of reverse voltage damaging the power conversion circuit 600 and causing circuit failure, thus improving the reliability and safety of the wireless Jacquard pin block.

[0058] The circuit structures of the first reverse connection protection circuit 710 and the second reverse connection protection circuit 720 can be configured according to specific circumstances. In some embodiments, such as... Figure 5 As shown, the first reverse connection protection circuit 710 includes a first diode D1. The anode of the first diode D1 is connected to the positive output terminal of the first power protection circuit 510, and the cathode of the first diode D1 is connected to the positive power input terminal of the drive circuit 300. The negative power input terminal of the drive circuit 300 is connected to the negative output terminal (i.e., grounded) of the first power protection circuit 510.

[0059] When the polarity of the first power supply is correct, the first diode D1 conducts in the forward direction, supplying power to the drive circuit 300. At this time, current flows to the drive circuit 300, enabling it to operate normally. When the polarity of the first power supply is reversed, the first diode D1 cuts off in the reverse direction, blocking reverse current and thus protecting the drive circuit 300. Therefore, the unidirectional conduction characteristic of the first diode D1 is used to achieve reverse connection protection, ensuring the safety of using the wireless Jacquard pin block.

[0060] In some embodiments, such as Figure 6 As shown, the second reverse connection protection circuit 720 includes a second diode D2. The anode of the second diode D2 is connected to the positive output terminal of the second power protection circuit 520; the cathode of the second diode D2 is connected to the positive input terminal of the power conversion circuit 600. The negative input terminal of the power conversion circuit 600 is connected to the negative output terminal (i.e., grounded) of the second power protection circuit 520.

[0061] When the polarity of the second power supply is correct, the second diode D2 conducts in the forward direction, supplying power to the control circuit 200. At this time, current flows to the power conversion circuit 600, enabling the power conversion circuit 600 to output control power according to the second power supply, thus supplying power to the control circuit 200 normally. When the polarity of the second power supply is reversed, the second diode D2 cuts off in the reverse direction, preventing reverse voltage from damaging the power conversion circuit 600. Therefore, the unidirectional conduction characteristic of the second diode D2 is used to achieve reverse connection protection, ensuring the safety of using the wireless Jacquard pin block.

[0062] In practical implementation, the wireless Jacquard pin block includes a first power line for transmitting a first power supply and a second power line for transmitting a second power supply. The first power line is disposed between the first power pin of the connector and the first power protection circuit 510, and the second power line is disposed between the second power pin of the connector and the second power protection circuit 520. The first and second power pins of the connector are used to introduce the first and second power supplies from the backplane.

[0063] In some embodiments, please refer again Figure 5 The first power protection circuit 510 includes a capacitor C1, and the first power line includes a serpentine PCB trace segment 530. The input terminal of the serpentine PCB trace segment 530 is used to connect to the first power supply, and the output terminal of the serpentine PCB trace segment 530 is connected to the drive circuit 300 and the first terminal of the capacitor C1. The second terminal of the capacitor C1 is grounded.

[0064] The parameters of capacitor C1 can be selected according to specific circumstances. The serpentine PCB trace segment 530 refers to the segment where the first power line follows a serpentine PCB routing pattern (i.e., serpentine trace). This serpentine PCB trace segment 530 routing pattern introduces parasitic inductance, which, together with capacitor C1, forms an LC filter to suppress the surge current rate of change. During hot-swapping, the inductance of the serpentine PCB trace segment 530 can also slow down the current rate of change, reducing the risk of noise coupling to the control signal.

[0065] It is understood that, in actual implementation, the first power line may also include straight segments, diagonal segments, or other forms of wiring. The second power line can be set according to actual needs, and this embodiment does not limit this.

[0066] In some embodiments, please refer again Figure 6 The second power supply protection circuit 520 includes a first transient voltage suppression diode (TVS1). The cathode of the first transient voltage suppression diode (TVS1) is connected to the input terminal of the power conversion circuit 600 to access the second power supply, and the anode of the first transient voltage suppression diode (TVS1) is grounded.

[0067] Specifically, the cathode of the first transient voltage suppression diode TVS1 is connected to the positive input terminal of the power conversion circuit 600, and the anode is grounded. When a surge voltage (transient spike voltage) is generated by the second power supply (such as a 15V DC power supply) due to factors such as hot-plugging or electrostatic discharge, the first transient voltage suppression diode TVS1 can quickly conduct after the voltage exceeds the breakdown voltage, clamping the overvoltage to below the clamping voltage (such as 18V), preventing damage to the power conversion circuit 600 due to overvoltage breakdown, thereby improving the reliability of the wireless Jacquard pin block. In some embodiments, such as Figure 7 As shown, the signal protection circuit 100 includes a second transient voltage suppression diode TVS2, the cathode of the second transient voltage suppression diode TVS2 is connected to the control circuit 200, and the anode of the second transient voltage suppression diode TVS2 is grounded.

[0068] Specifically, when factors such as hot-plugging may cause surges in the control signal, the second transient voltage suppression diode TVS2 can quickly turn on after the voltage exceeds the breakdown voltage, clamping the overvoltage to a safe voltage range, preventing the input pins of the control circuit 200 from being damaged by overvoltage breakdown, thereby improving the reliability of the wireless Jacquard pin block.

[0069] In practical implementation, the first transient voltage suppression diode (TVS1) and the second transient voltage suppression diode (TVS2) can be selected according to the actual situation. For example, the transient voltage suppression diodes can be devices capable of absorbing ±30kV of contact discharge energy, reducing the residual voltage to below 5.6V. By shunting the residual charge through the transient voltage suppression diodes within the wireless Jacquard pin block circuit board, the requirements of the IEC 61000-4-2 protection standard are met.

[0070] In some embodiments, the signal protection circuit 100 further includes a resistor R1. The cathode of the transient voltage suppression diode is connected to the first end of the resistor R1, and the second end of the resistor R1 is connected to the control circuit 200.

[0071] Therefore, by setting a second transient voltage suppression diode (TVS2) at the interface for accessing the control signal, and then connecting a resistor R1 in series, surge current can be limited again to restrict the surge current amplitude during insertion and removal. This improves the hot-swapping performance of the wireless Jacquard pin block and enhances its reliability.

[0072] It is understandable that the structure of the signal protection circuit 100 can be flexibly adjusted according to the specific number of control signals to be input. Taking the embodiment shown in the figure that requires two control signals as an example, two second transient voltage suppression diodes are set accordingly, namely TVS2 and TVS3, to be connected to the two input pins of the control circuit 200 respectively.

[0073] Furthermore, the number of resistors is the same as the number of second transient voltage suppression diodes. For each control signal, a set of series-connected resistors and second transient voltage suppression diodes are configured. Still using... Figure 7 In the example shown, a set of resistors R1 and TVS2 connected in series is used to connect one control signal, and another set of resistors R2 and TVS3 connected in series is used to connect another control signal.

[0074] In some embodiments, the signal protection circuit 100 further includes a buffer U1, the input of which is connected to the second end of a resistor, and the output of which is connected to the control circuit 200.

[0075] Among them, buffer U1 can be a buffer chip. The buffer U1 shown in the figure has two sets of input and output ports to connect to two control signals.

[0076] In this embodiment, a buffer U1 is provided. On the one hand, when transient interference occurs in the control signal, the buffer U1, through its high input impedance and low output impedance, can form physical isolation between the input and output terminals, blocking the transmission path of the transient interference signal and preventing the input pins of the control circuit 200 from being damaged, thereby achieving physical isolation of transient interference from the energized signal interface. On the other hand, the buffer U1 can increase the driving capability of the control signal output to the control circuit 200, improving the possibility of circuit overload.

[0077] Therefore, a three-stage protection system is adopted for the control signal. The first stage uses a second transient voltage suppression diode to provide electrostatic discharge (ESD) protection for the control signal. The second stage uses a resistor to further limit surge current, restricting the surge current amplitude during insertion and removal. The third stage uses a buffer U1 to physically isolate transient interference from the energized signal interface during insertion and removal, thus enabling the wireless Jacquard pin block to effectively cope with hot-swapping conditions and ensuring high reliability. Furthermore, the circuit structure is simple and the implementation cost is low.

[0078] It should be noted that in practical applications, the backplate of a comb may be equipped with multiple wireless Jacquard pin blocks (e.g., dozens or hundreds). These wireless Jacquard pin blocks are cascaded through the backplate, meaning the signal output from one wireless Jacquard pin block is transmitted to the next via the backplate. In this scenario, the wireless Jacquard pin blocks can also be configured with output signal protection circuits as needed. For example... Figure 8 As shown, the wireless Jacquard pin block includes an output signal protection circuit 800, which is disposed between the output terminal of the control circuit 200 and the connector.

[0079] The circuit structure of the output signal protection circuit 800 can be set with reference to the signal protection circuit 100 described above, such as... Figure 9 As shown, the circuit includes an output buffer U2, a first output resistor R3, and a third transient voltage suppressor diode TVS4. Further, a second output resistor R4 can be provided between the output buffer U2 and the control circuit 200 as needed. It can be understood that the output buffer U2 shown in the figure includes two input / output pins, which can be connected to two signals output from the control circuit 200 respectively. One signal is protected by the second output resistor R4, the output buffer U2, the first output resistor R3, and the third transient voltage suppressor diode TVS4, while the other signal is protected by the output resistor R6, the output buffer U2, the output resistor R5, and the transient voltage suppressor diode TVS5.

[0080] Therefore, by setting the output signal protection circuit 800, the performance of the wireless Jacquard pin block in dealing with hot-plugging can be further improved, resulting in higher reliability.

[0081] The embodiments of this application also provide a warp knitting machine, including a wireless jacquard needle block, which can be configured with reference to the above embodiments.

[0082] It should be noted that the wireless jacquard pin block replaces the traditional wired connection by combining a printed circuit board (PCB) with conductive pins (i.e., connectors). The cable length is significantly reduced, and the power supply for the comb is handled uniformly by the wiring assembly, simplifying the wiring complexity.

[0083] In some embodiments, the warp knitting machine further includes a comb bar, which includes a back plate and a control system. The control signal output by the control system is connected to the wireless Jacquard needle block through the back plate.

[0084] like Figure 10 As shown, in some embodiments, there can be multiple wireless Jacquard pin blocks, all of which are mounted on a backplane. After installation, the wireless Jacquard pin blocks are cascaded together.

[0085] In some embodiments, there may be multiple backplanes, which are connected to each other through specific connectors to achieve cascaded transmission of signals such as first power supply, second power supply, and control signals.

[0086] In the description of this specification, references to terms such as "some embodiments," "other embodiments," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative descriptions of the above terms do not necessarily refer to the same embodiments or examples.

[0087] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0088] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of this application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these modifications and improvements all fall within the protection scope of this application. Therefore, the protection scope of this application should be determined by the appended claims.

Claims

1. A wireless Jacquard pin block, characterized in that, include: Signal protection circuit, control circuit, drive circuit, and yarn guide needle; The input terminal of the signal protection circuit is used to receive the control signal, the output terminal of the signal protection circuit is connected to the control circuit, the control circuit is also connected to the input terminal of the drive circuit, and the output terminal of the drive circuit is connected to the yarn guide needle. The signal protection circuit is used to perform anti-interference processing on the incoming control signal and output the anti-interference processed control signal to the control circuit. The control circuit outputs a drive signal based on the control signal after anti-interference processing, so that the drive circuit controls the yarn guide needle to run according to the drive signal.

2. The wireless Jacquard pin block according to claim 1, characterized in that, The wireless Jacquard pin block also includes a first power protection circuit, wherein the driving circuit is connected to a first power source via the first power protection circuit, and the first power protection circuit is used to suppress surges in the first power source.

3. The wireless Jacquard pin block according to claim 2, characterized in that, The first power protection circuit includes a capacitor, and the wireless Jacquard pin block includes a first power line; the first power line includes a serpentine PCB trace segment, the input end of the serpentine PCB trace segment is used to connect to the first power supply, the output end of the serpentine PCB trace segment is connected to the driving circuit and the first end of the capacitor, and the second end of the capacitor is grounded.

4. The wireless Jacquard pin block according to claim 2, characterized in that, The wireless Jacquard needle block also includes a second power protection circuit and a power conversion circuit; the input terminal of the power conversion circuit is connected to a second power source via the second power protection circuit, which is used to suppress surges in the second power source; the output terminal of the power conversion circuit is connected to the control circuit, which is used to convert the second power source into a control power source corresponding to the control circuit.

5. The wireless Jacquard pin block according to claim 4, characterized in that, The second power protection circuit includes a first transient voltage suppression diode, the cathode of which is connected to the input terminal of the power conversion circuit, and the anode of which is grounded.

6. The wireless Jacquard pin block according to claim 4, characterized in that, The wireless Jacquard pin block further includes a first reverse connection protection circuit and a second reverse connection protection circuit. The first reverse connection protection circuit is disposed between the first power protection circuit and the driving circuit, and the second reverse connection protection circuit is disposed between the second power protection circuit and the power conversion circuit.

7. The wireless Jacquard pin block according to claim 1, characterized in that, The signal protection circuit includes a second transient voltage suppression diode, the cathode of which is connected to the control circuit, and the anode of which is grounded.

8. The wireless Jacquard pin block according to claim 7, characterized in that, The signal protection circuit also includes a resistor, the cathode of the transient voltage suppression diode is connected to the first end of the resistor, and the second end of the resistor is connected to the control circuit.

9. The wireless Jacquard pin block according to claim 8, characterized in that, The signal protection circuit also includes a buffer, the input of which is connected to the second end of the resistor, and the output of which is connected to the control circuit.

10. A warp knitting machine, characterized in that, Includes the wireless Jacquard pin block according to any one of claims 1-9.

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