Jacquard device and driving circuit for jacquard device

Abstract

The utility model discloses a jacquard device and a driving circuit for the same. The driving circuit comprises a power supply VCC1, a power supply VCC2, a resistor R1, a resistor R3, a triode Q1, a triode Q2, a diode D1, a resistor R4, a resistor R5, a diode D2, a triode Q3 and a triode Q4. According to the utility model, the input signal INPUT1 is input from the emitter of the triode Q2 instead of the base, so that on one hand, the circuit is a common-base amplification circuit, the switching characteristic is better, the response speed is high, on the other hand, the transition time of the triode Q2 in an amplification region when the triode Q2 is turned on and off can be effectively shortened, and the power consumption and heat emission of the triode Q2 are reduced; and the double-purpose effect is achieved.

Description

Technical Field

[0001] The utility model relates to the field of piezoelectric jacquard, in particular to a jacquard jacquard device and a driving circuit for the jacquard jacquard device. Background Art

[0002] The piezoelectric jacquard element is used to control the deflection of the jacquard needle on a warp knitting machine. It consists of two piezoelectric ceramics separated (insulated) by a glass fiber layer. Piezoelectric ceramics have the property of deforming themselves when voltage is applied. In order to transmit voltage, electrodes with good elasticity and conductivity are used. By switching the circuit switches on both sides, voltage is applied alternately on both sides of the piezoelectric jacquard element, and the piezoelectric ceramics are deformed, causing the yarn guide needle to deflect to the left or right. Because the piezoelectric ceramics act like capacitors, the piezoelectric jacquard element can remain in its deflected position, and the current pulse controls the deflection of one needle distance. During use, each piezoelectric ceramic has a corresponding drive circuit to drive it.

[0003] With the development of high-speed warp knitting machines, the speed of warp knitting machines is getting faster and faster, which requires the drive circuit to have a faster response speed and lower power consumption, thereby reducing heat generation and power consumption. Utility Model Content

[0004] The utility model provides a jacquard jacquard device and a driving circuit for the jacquard jacquard device, and its main purpose is to overcome the defect that the input signal from the base of a transistor in the existing driving circuit for the jacquard jacquard device has a slow response speed.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0006] A jacquard device and a driving circuit for the jacquard device, the jacquard device comprising a plurality of arranged piezoelectric jacquard elements and a jacquard driver having at least one driving circuit, the piezoelectric jacquard element comprising at least one yarn guide needle, at least one piezoelectric ceramic sheet C1 and at least one piezoelectric ceramic sheet C2, each of the yarn guide needles being driven by the piezoelectric ceramic sheet C1 and the piezoelectric ceramic sheet C2, the driving circuit being used to drive the piezoelectric ceramic sheet C1 and the piezoelectric ceramic sheet C2 to swing together, the driving circuit comprising at least one voltage stabilizing diode D3, the cathode of the diode D3, the other end of the piezoelectric ceramic sheet C1 and The other end of the piezoelectric ceramic sheet C2 is connected together, the positive electrode of the diode D3 is grounded, the driving circuit includes a power supply VCC1, a power supply VCC2, a resistor R1, a resistor R2, a resistor R3, a resistor R4, a resistor R5, a transistor Q1, a transistor Q2, a transistor Q3, a transistor Q4, a diode D1, and a diode D2, the other end of the resistor R1 is connected to the base of the transistor Q2, the emitter of the transistor Q2 is connected to a signal input terminal INPUT1, the collector of the transistor Q2, the cathode of the diode D1, the base of the transistor Q1 and One end of the resistor R2 is connected together, the other end of the resistor R2, the collector of the transistor Q1 and the power supply VCC2 are connected together, the emitter of the transistor Q1, the anode of the diode D1 and one end of the resistor R3 are connected together, one end of the piezoelectric ceramic piece C1 of the jacquard device is electrically connected to the other end of the resistor R3, the other end of the piezoelectric ceramic piece C1 is grounded, the emitter of the transistor Q4 is connected to an input signal INPUT2, one end of the resistor R1 is electrically connected to the power supply VCC1, the base of the transistor Q4, the other end of the resistor R1 and the positive electrode of the diode D1 are connected together. and the base of the transistor Q2 are connected together, the collector of the transistor Q4, the cathode of the diode, the base of the transistor Q3 and one end of the resistor R4 are connected together, the other end of the resistor R4, the collector of the transistor Q3 and the collector of the transistor Q1 are connected together, the emitter of the transistor Q3, the anode of the diode D2 and one end of the resistor R5 are connected together, one end of the piezoelectric ceramic sheet C2 of the jacquard device is electrically connected to the other end of the resistor R5, and the piezoelectric ceramic sheet C1 and the piezoelectric ceramic sheet C2 are connected together and grounded.

[0007] Furthermore, a diode D3 is included, a cathode of the diode D3, the other end of the piezoelectric ceramic sheet C1 and the other end of the piezoelectric ceramic sheet C2 are connected together, and an anode of the diode D3 is grounded.

[0008] Compared with the prior art, the beneficial effects produced by the utility model are:

[0009] The utility model has a simple structure and strong practicality. By setting the input signal INPUT1 to be input by the emitter of the transistor Q2 instead of the base, on the one hand, it is a common base amplifier circuit with good switching characteristics and fast response speed. On the other hand, it can effectively shorten the transition time of the transistor Q2 in the amplification area when turning on and off, reduce the power consumption and heat generation of the transistor Q2, and achieve the effect of killing two birds with one stone.

[0010] In the utility model, by setting the input signal INPUT2 to be input by the emitter of the transistor Q4 instead of the base, on the one hand, it is a common base amplifier circuit with better switching characteristics and faster response speed, and on the other hand, it can effectively shorten the transition time of the transistor Q4 in the amplification area when turning on and off, reduce the power consumption and heat generation of the transistor Q4, and achieve the effect of killing two birds with one stone.

[0011] In the present invention, by setting the transistor Q2 and the transistor Q4 to share a bias resistor R1, the number of circuit elements is reduced, the reliability is enhanced, and the economic benefits are improved at the same time.

[0012] In the present invention, the diode D3 is provided so that the driving circuit has a negative voltage function, and no additional negative voltage power supply is required. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a circuit diagram of Embodiment 1.

[0014] Figure 2 This is a circuit diagram of Embodiment 2.

[0015] Figure 3 This is a circuit diagram of Embodiment 3.

[0016] Figure 4 This is the circuit diagram of the driving circuit.

[0017] Figure 5 An exploded view of the jacquard device.

[0018] Figure 6 This is a schematic diagram of the structure of the Jacquard drive.

[0019] Figure 7 This is a schematic diagram of the structure of the jacquard device.

[0020] Figure 8 This is a module diagram of the jacquard device.

[0021] Fig. 9 This is a diagram showing the jacquard device being disassembled from the comb mounting portion. DETAILED DESCRIPTION

[0022] The specific implementation of the present utility model is described below with reference to the accompanying drawings.

[0023] Embodiment 1, refer to Figure 1 and Figure 3 A jacquard device and a driving circuit for the jacquard device, the jacquard device comprising a plurality of piezoelectric jacquard elements arranged in an array and at least one driving circuit. The piezoelectric jacquard element comprises at least one yarn guide needle, at least one piezoelectric ceramic sheet C1 and at least one piezoelectric ceramic sheet C2, each yarn guide needle is driven by the piezoelectric ceramic sheet C1 and the piezoelectric ceramic sheet C2, and the driving circuit is used to drive the piezoelectric ceramic sheet C1 and the piezoelectric ceramic sheet C2 to swing together.

[0024] Reference Figure 1 The driving circuit includes a power supply VCC1, a power supply VCC2, a resistor R1, a resistor R2, a resistor R3, a transistor Q1, a transistor Q2 and a diode D1. One end of the resistor R1 is electrically connected to the power supply VCC1, the other end of the resistor R1 is connected to the base of the transistor Q2, the emitter of the transistor Q2 is connected to a signal input terminal INPUT1, the collector of the transistor Q2, the cathode of the diode D1, the base of the transistor Q1 and one end of the resistor R2 are connected together, the other end of the resistor R2, the collector of the transistor Q1 and the power supply VCC2 are connected together, the emitter of the transistor Q1, the anode of the diode D1 and one end of the resistor R3 are connected together, one end of the piezoelectric ceramic sheet C1 of the jacquard device is electrically connected to the other end of the resistor R3, and the other end of the piezoelectric ceramic sheet C1 is grounded.

[0025] Reference Figure 1 , the power supply VCC1 is 3~5V, and the power supply VCC2 is 160~200V.

[0026] Reference Figure 1 , resistor R2 is the transistor Q1 follow-up bias resistor, resistor R3 is the current limiting resistor of the piezoelectric ceramic piece C1, and diode D1 is a reverse bias diode used to quickly turn off the transistor Q1. The piezoelectric ceramic piece C1 can be represented as an equivalent capacitor C1 in the circuit diagram.

[0027] Example 2, refer to Figure 2 The difference between the second embodiment and the first embodiment is that: it also includes a diode D3 and a freewheeling resistor R6, one end of the freewheeling resistor R6 is connected to the cathode of the diode D3, the cathode of the diode D3 and the other end of the piezoelectric ceramic sheet C1, the anode of the diode D3 is grounded, the other end of the freewheeling resistor R6 is electrically connected to the collector of the transistor Q1, and the diode D3 is a voltage-stabilizing diode. The main function of the diode D3 and the freewheeling resistor R6 is to provide a negative voltage driving function to the piezoelectric ceramic C1 and the piezoelectric ceramic C2.

[0028] The other structures are similar to those of the first embodiment and will not be described in detail here.

[0029] Example 3, refer to Figure 3 The difference between the third embodiment and the first embodiment is that the driving circuit includes a power supply VCC1, a power supply VCC2, a resistor R1, a resistor R2, a resistor R3, a transistor Q1, a transistor Q2, a diode D1, a resistor R4, a resistor R5, a diode D2, a transistor Q3 and a transistor Q4.

[0030] Reference Figure 3 One end of the resistor R1 is electrically connected to the power supply VCC1, the other end of the resistor R1 is connected to the base of the transistor Q2, the emitter of the transistor Q2 is connected to a signal input terminal INPUT1, the collector of the transistor Q2, the cathode of the diode D1, the base of the transistor Q1 and one end of the resistor R2 are connected together, the other end of the resistor R2, the collector of the transistor Q1 and the power supply VCC2 are connected together, the emitter of the transistor Q1, the anode of the diode D1 and one end of the resistor R3 are connected together, and one end of the piezoelectric ceramic sheet C1 of the jacquard device is electrically connected to the other end of the resistor R3.

[0031] Reference Figure 3 The emitter of the transistor Q4 is connected to an input signal INPUT2, the base of the transistor Q4, the other end of the resistor R1 and the base of the transistor Q2 are connected together, the collector of the transistor Q4, the cathode of the diode, the base of the transistor Q3 and one end of the resistor R4 are connected together, the other end of the resistor R4, the collector of the transistor Q3 and the collector of the transistor Q1 are connected together, the emitter of the transistor Q3, the anode of the diode D2 and one end of the resistor R5 are connected together, one end of the piezoelectric ceramic piece C2 of the jacquard device is electrically connected to the other end of the resistor R5, and the piezoelectric ceramic piece C1 is connected to the piezoelectric ceramic piece C2 and is grounded.

[0032] Reference Figure 3 When the input signal INPUT1 is at a low level, the input signal INPUT2 is at a high level. When the input signal INPUT1 is at a high level, the input signal INPUT2 is at a low level.

[0033] Reference Figure 3 , power supply VCC1 is 3~5V. Power supply VCC2 is 160~200V. Power supply VCC2 can be DC180V.

[0034] Reference Figure 3 , the resistor R2 is the current bias resistor of the transistor Q1, the resistor R3 is the current limiting resistor of the piezoelectric ceramic piece C1, and the diode D1 is a reverse biased diode used to quickly shut down the transistor Q1.

[0035] Reference Figure 3 , resistor R4 is the follow-up bias resistor of transistor Q3, resistor R5 is the current limiting resistor of piezoelectric ceramic piece C2, resistor R1 is the common base bias resistor of transistor Q2 and transistor Q4, and diode D2 is a reverse bias diode used to quickly turn off transistor Q3. Piezoelectric ceramic piece C1 can be represented as an equivalent capacitor C1 in the circuit diagram, and piezoelectric ceramic piece C2 can be represented as an equivalent capacitor C2 in the circuit diagram.

[0036] Reference Figure 3 , the input signal INPUT1 is input by the emitter of the transistor Q2, the input signal INPUT2 is input by the emitter of the transistor Q4, 0V is a low level, the power supply VCC2 is a high level (in this embodiment, it can be a high level of 3.3V or a high level of 5V), and the input signals of the input signal INPUT1 and the input signal INPUT2 are opposite, that is, when the input signal INPUT1 is input at a low level, the input signal INPUT2 is at a high level; when the input signal INPUT1 is input at a high level, the input signal INPUT2 is at a low level.

[0037] Reference Figure 3 When the input signal INPUT1 is at a low level and the input signal INPUT2 is at a high level, 3.3V will pass through the resistor R1, through the base of the transistor Q2 to the emitter of the transistor Q2. At this time, the transistor Q2 is turned on, and the transistor Q1 is in a reverse biased state due to the presence of the diode D1, so the transistor Q1 is turned off, and the piezoelectric ceramic C1 discharges to the input signal INPUT1 end through the resistor R3, the diode D1, and the transistor Q2; since the input signal INPUT2 is at a high level, and the bases of the transistors Q2 and Q4 are connected together, the transistor Q4 is in a reverse biased cut-off state at this time. At this time, the power supply VCC1 (in this embodiment, the power supply VCC1 can be DC180V) passes through the resistor R4, the base of the transistor Q3, and then flows through the resistor R5 to charge the piezoelectric ceramic C2.

[0038] Reference Figure 3 , Summary: Input signal INPUT1 = low level, input signal INPUT2 = high level, piezoelectric ceramic C1 discharges, piezoelectric ceramic C2 charges, and the piezoelectric ceramic piece swings to one side.

[0039] Reference Figure 3When the input signal INPUT1 is at a high level and the input signal INPUT2 is at a low level, 3.3V will pass through the resistor R1, through the base of the transistor Q4 to the emitter of the transistor Q4. At this time, the transistor Q4 is turned on, and the transistor Q3 is in a reverse biased state due to the presence of the diode D2, so the transistor Q3 is cut off, and the piezoelectric ceramic C2 discharges to the input signal INPUT2 end through the resistor R5, the diode D2, and the transistor Q4; since the input signal INPUT1 is at a high level, and the base of the transistor Q2 is connected to the base of the transistor Q4, the transistor Q2 is in a reverse biased cut-off state at this time. At this time, DC180V passes through the resistor R2, the base of the transistor Q1, and then flows through the resistor R3 to charge the piezoelectric ceramic C1.

[0040] Reference Figure 3 , Summary: Input signal INPUT1 = high level, input signal INPUT2 = low level, piezoelectric ceramic C1 charges, piezoelectric ceramic C2 discharges, and the piezoelectric ceramics swing in opposite directions

[0041] Advantages of drive circuit:

[0042] Reference Figure 3 By setting the input signal INPUT1 and the input signal INPUT2 to be input by the emitters of the transistor Q2 and the transistor Q4 respectively, instead of being input by the base, it is a common base amplifier circuit with better switching characteristics and faster response speed.

[0043] Reference Figure 3 The driving circuit can effectively shorten the transition time of the transistor Q2 and the transistor Q4 in the amplification area when turning on and off, and reduce the power consumption and heat generation of the transistor Q2 and the transistor Q4.

[0044] Reference Figure 3 , transistor Q2, transistor Q4 share a bias resistor R1, which reduces the number of circuit components, enhances reliability and improves economic benefits.

[0045] Reference Figure 3 For the driving circuit to work normally, the signal input high level voltage must be equal to the bias voltage source voltage of the resistor R2 and the resistor R5 (which can be 3.3V or 5V in this embodiment).

[0046] The other structures are similar to those of the first embodiment and will not be described in detail here.

[0047] Embodiment 4, referring to Figure 4The difference between the fourth embodiment and the third embodiment is that the driving circuit further includes a diode D3 and a freewheeling resistor R6, one end of the freewheeling resistor R6 is connected to the cathode of the diode D3, the cathode of the diode D3 and the other end of the piezoelectric ceramic sheet C1, the anode of the diode D3 is grounded, the other end of the freewheeling resistor R6 is electrically connected to the collector of the transistor Q1, and the diode D3 is a voltage-stabilizing diode. The main function of the diode D3 and the freewheeling resistor R6 is to provide a negative voltage driving function to the piezoelectric ceramic C1 and the piezoelectric ceramic C2.

[0048] Reference Figure 4 By setting a diode D3 and a freewheeling resistor R6, the driving circuit has a negative voltage function and does not require an additional negative voltage power supply.

[0049] Reference Figure 4 , diode D3 is a voltage-stabilizing diode, which is located between the common end of piezoelectric ceramic C1 and piezoelectric ceramic C2 and the ground. Its main function is to make the piezoelectric ceramic piece generate a stable negative voltage when working, and the generated negative voltage value is equal to the voltage-stabilizing value Vd of diode D3. The working principle is explained by the charging and discharging of piezoelectric ceramic C1: the common point of piezoelectric ceramic C1 and piezoelectric ceramic C2 is connected to diode D3, so the voltage of the common point is constant and equal to the voltage-stabilizing value Vd of diode D3. When piezoelectric ceramic C1 is charged, the voltage of piezoelectric ceramic C1 after charging = DC180-Vd; when piezoelectric ceramic C1 is discharged, piezoelectric ceramic C2 is charged and the negative electrode of C1 is charged due to the existence of voltage-stabilizing diode D3, because: the voltage of the common point of piezoelectric ceramic C2 is constant and equal to Vd, so at this time piezoelectric ceramic C1 will have a reverse voltage, the common point is positive, and the discharge side of resistor R3 is 0, that is, a negative voltage with a voltage value of Vd is generated on piezoelectric ceramic C1. In general, the negative voltage of C1 is mainly formed by a part of the charging current of C2, which is embedded in its voltage stabilization value Vd by diode D3, and finally forms a negative voltage. The principle of piezoelectric ceramic C2 is the same. Diode D3 is equivalent to playing the role of a passive negative voltage. On the one hand, the existence of diode D3 reduces the forward voltage of the piezoelectric ceramic when it is working, so it can significantly improve the service life of the piezoelectric ceramic without affecting the torque of the piezoelectric ceramic, and the diode D3 itself is a passive component and will not produce other adverse effects. The function of its freewheeling resistor R6 is that when the piezoelectric ceramic C1 or the piezoelectric ceramic C2 has a slight leakage, since the diode D3 itself is a passive component, it will not produce an actual power supply effect. When the negative pressure is maintained for a long enough time, the negative pressure of the piezoelectric ceramic C1 or the piezoelectric ceramic C2 will gradually decrease until it disappears due to leakage. The existence of the freewheeling resistor R6 will provide a very small current to supplement the charge lost by the piezoelectric ceramic C1 or the piezoelectric ceramic C2 due to leakage, so that the negative pressure can always exist.

[0050] The other structures are similar to those of the first embodiment and will not be described in detail here.

[0051] Example 5, refer to Figure 4 The difference between the fifth embodiment and the third embodiment is that the jacquard pattern device includes a plurality of arranged piezoelectric jacquard elements, at least one driving circuit board and at least one driving circuit arranged on the driving circuit board.

[0052] Reference Figure 4 The piezoelectric jacquard element includes at least one yarn guide needle, at least one piezoelectric ceramic sheet C1 and at least one piezoelectric ceramic sheet C2. Each yarn guide needle is driven by the piezoelectric ceramic sheet C1 and the piezoelectric ceramic sheet C2. The driving circuit is used to drive the piezoelectric ceramic sheet C1 and the piezoelectric ceramic sheet C2 to swing together. The piezoelectric ceramics C1 and the piezoelectric ceramics C2 are respectively wrapped on both sides of the glass fiber board, and the conductive sheets are electrically connected to the corresponding piezoelectric ceramics.

[0053] Reference Figure 4 The driving circuit has at least one voltage stabilizing diode D3 and a freewheeling resistor R6. One end of the freewheeling resistor R6 is connected to the cathode of the diode D3, the cathode of the diode D3 and the other end of the piezoelectric ceramic sheet C1. The anode of the diode D3 is grounded. The other end of the freewheeling resistor R6 is electrically connected to the collector of the transistor Q1. The diode D3 is a voltage stabilizing diode. The main function of the diode D3 and the freewheeling resistor R6 is to provide a negative voltage driving function to the pressure point ceramic C1 and the piezoelectric ceramic C2.

[0054] Reference Figure 4, diode D3 is a voltage-stabilizing diode, which is located between the common end of piezoelectric ceramic C1 and piezoelectric ceramic C2 and the ground. Its main function is to make the piezoelectric ceramic piece generate a stable negative voltage when working, and the generated negative voltage value is equal to the voltage-stabilizing value Vd of diode D3. The working principle is explained by the charging and discharging of piezoelectric ceramic C1: the common point of piezoelectric ceramic C1 and piezoelectric ceramic C2 is connected to diode D3, so the voltage of the common point is constant and equal to the voltage-stabilizing value Vd of diode D3. When piezoelectric ceramic C1 is charged, the voltage of piezoelectric ceramic C1 after charging = DC180-Vd; when piezoelectric ceramic C1 is discharged, piezoelectric ceramic C2 is charged and the negative electrode of C1 is charged due to the existence of voltage-stabilizing diode D3, because: the voltage of the common point of piezoelectric ceramic C2 is constant and equal to Vd, so at this time piezoelectric ceramic C1 will have a reverse voltage, the common point is positive, and the discharge side of resistor R3 is 0, that is, a negative voltage with a voltage value of Vd is generated on piezoelectric ceramic C1. Generally speaking, the negative voltage of C1 is mainly formed by a part of the charging current of C2, which is embedded in the voltage stabilization value Vd by diode D3, and finally forms a negative voltage. The piezoelectric ceramic C2 has the same principle. Diode D3 is equivalent to playing the role of a passive negative voltage. On the one hand, the existence of diode D3 reduces the forward voltage of the piezoelectric ceramic when it is working, so it can significantly improve the service life of the piezoelectric ceramic without affecting the torque of the piezoelectric ceramic. In addition, the voltage stabilizing diode D3 itself is a passive component and will not produce other adverse effects.

[0055] The function of the freewheeling resistor R6 is that when there is a slight leakage in the voltage-point ceramic C1 or the voltage-point ceramic C2, since the voltage-stabilizing diode D3 itself is a passive component, it will not produce an actual power supply effect. When the negative voltage is maintained for a long enough time, the negative voltage of the voltage-point ceramic C1 or the voltage-point ceramic C2 will gradually decrease over time until it disappears due to leakage. The existence of the freewheeling resistor R6 will provide a very small current to supplement the charge lost by the voltage-point ceramic C1 or the voltage-point ceramic C2 due to leakage, so that the negative pressure can always exist.

[0056] The other structures are similar to those of the third embodiment and will not be described in detail here.

[0057] Example 6, refer to Figure 5 The difference between the sixth embodiment and the first embodiment is that the jacquard device can be arranged in a warp knitting machine, and the jacquard device includes at least one bottom base 111 for mounting a piezoelectric jacquard element 102, a plurality of piezoelectric jacquard elements 102 arranged on the bottom base 111, and a jacquard driver 112, and the jacquard driver 112 is used to drive the piezoelectric jacquard element 102 to realize the jacquard yarn guiding action.

[0058] Reference Figure 5 , Figure 6 , Figure 7 and Figure 8The jacquard actuator 112 includes at least one printed circuit board 113, at least one first power connection port 114, at least one second power connection port 115, a first cable 116 disposed in the printed circuit board 113, at least one third power connection port 120 disposed at the rear of the printed circuit board 113, at least one plug-in element 300, at least one driving circuit 118 controlled by an external controller, a second cable 117 disposed in the printed circuit board 113, and a third cable 119 disposed in the printed circuit board 113. The driving circuit 118 is disposed on the printed circuit board 113.

[0059] Reference Figure 5 , Figure 6 , Figure 7 and Figure 8 The first power connection port 114 is disposed on the left side of the printed circuit board 113 by welding, the second power connection port 115 is disposed on the right side of the printed circuit board 113 by welding, the plug component 300 is disposed on the front part of the printed circuit board 113 by welding, and the third power connection port 120 is disposed on the rear part of the printed circuit board 113 by welding, so that the first power connection port 114, the second power connection port 115, the plug component 300, the third power connection port 120 and the printed circuit board 113 are electrically connected together by welding to form an inseparable whole 600.

[0060] Reference Figure 5 , Figure 6 , Figure 7 and Figure 8 The first row of cables 116 includes a circuit for providing the required driving power to the driving circuit 118 and a process signal line. The first row of cables 116 is used to connect the first power connection port 114 and the second power connection port 115 .

[0061] Reference Figure 5 , Figure 6 , Figure 7 and Figure 8 The output end of the first power connection port 114 and the input end of the second power connection port 115 are respectively arranged on the printed circuit board 113 in a welding manner, so that the first power connection port 114, the second power connection port 115 and the printed circuit board 113 are electrically connected together to form an inseparable whole, a part of the printed circuit board 113 can be replaced on a part of the base 111, and the piezoelectric jacquard element can be replaced on another part of the base 111. In this embodiment, the specific piezoelectric jacquard element can be arranged on the front part of the base 111, and the printed circuit board 113 can be replaced on the rear part of the base 111, and the base 111 is made of aluminum-magnesium alloy material, aluminum alloy material or magnesium alloy material.

[0062] Reference Figure 5 , Figure 6 , Figure 7 and Figure 8 By setting the output end of the first power connection port 114 and the input end of the second power connection port 115, they are respectively set on the printed circuit board 113 in a welding manner, so that the first power connection port 114, the second power connection port 115 and the printed circuit board 113 are electrically connected together to form an inseparable whole. The whole serves as a power supply unit and plays the function of wireless power supply. On the one hand, it replaces the existing copper bar and ejector pin power supply method, improves the integration of the power supply unit and the stability of power supply. On the other hand, through the setting, a part of the printed circuit board 113 can be replaceably installed on a part of the base 111, which is convenient for the separation and replacement of the jacquard drive 112 during the later maintenance. When the piezoelectric jacquard element is damaged, the separated jacquard drive 112 that can be used normally can be transferred and installed on other bases 111 for secondary use, thereby reducing the product cost and achieving the effect of killing two birds with one stone.

[0063] Reference Figure 5 , Figure 6 , Figure 7 and Figure 8 The second cable 117 is used to connect the first power connection port 114 and the driving circuit 118 . The second cable 117 includes a circuit for providing the driving circuit 118 with required driving power and a process signal line.

[0064] Reference Figure 5 , Figure 6 , Figure 7 and Figure 8 The third row of cables 119 is used to connect the third power port 120 with the drive circuit 118. The third row of cables 119 includes a circuit for providing the required drive power to the drive circuit 118 and a process signal line. When the stitch length is adjusted, the third power port 120 is energized. When the warp knitting machine is operating normally, that is, when the jacquard device is normally guiding the jacquard yarn, the third power port 120 is not energized.

[0065] Reference Figure 5 , Figure 6 , Figure 7 , Figure 8 and Fig. 9 By providing a third power connection port 120 and a third row of cables 119 in the printed circuit board 113, when the stitch length needs to be adjusted before the warp knitting machine is operated, a single designated jacquard device can be started as needed, and an external cable that is separately connected to an external controller is used. The external cable is plugged into the third power connection port 120 in a pluggable manner to be powered on, thereby driving the single jacquard device that needs to be adjusted separately. After the adjustment is completed, the external cable is directly unplugged to end the adjustment, thereby realizing quick adjustment of the stitch length of the designated single jacquard device, which is simple and convenient.

[0066] Reference Figure 5 , Figure 6 , Figure 7 and Figure 8 The printed circuit board 113 includes a first printed circuit board body 321 and a second printed circuit board body 322. The output end of the first printed circuit board body 321 and the input end of the second printed circuit board body 322 are electrically connected together by welding to form an inseparable whole.

[0067] Reference Figure 5 , Figure 6 , Figure 7 and Figure 8 The output end of the first power connection port 114, the input end of the second power connection port 115, and the output end of the third interface are respectively arranged on the first printed circuit board body 321 by welding, and after being electrically connected together, they form an inseparable whole. The output end of the second printed circuit board body 322 and the output end of the plug-in element 300 are electrically connected together by welding to form an inseparable whole.

[0068] Reference Figure 5 , Figure 6 , Figure 7 and Figure 8 The actuator has a plurality of piezoelectric jacquard elements arranged on a bottom base 111. The piezoelectric jacquard element 102 includes at least one yarn guide needle 130, at least one substrate 502, two piezoelectric ceramic sheets 500 respectively wrapped on the left and right sides of the substrate 502, and two copper foil electrical terminals 501 respectively arranged on the left and right sides of the substrate 502. The two copper foil electrical terminals 501 are respectively electrically connected to the tails of the corresponding piezoelectric ceramic sheets 500. The front part of the substrate 502 is connected to the yarn guide needle 130. The voltage output by the driving circuit 118 is applied to the piezoelectric ceramic sheet 500 to drive the piezoelectric The ceramic sheet 500 swings, and the substrate 502 is an insulating layer, which can be specifically a glass fiber sheet. A yarn guide needle 130 is arranged at the front end of the piezoelectric ceramic sheet 500. The substrate 502 and the two piezoelectric ceramic sheets 500 are combined into a piezoelectric needle selection sheet. A common bottom base 111 can be provided with 16 yarn guide needles 130, which are arranged horizontally. The specific number of yarn guide needles 130 is determined according to the machine number of the warp knitting machine. The piezoelectric ceramic sheet 500 is energized by the jacquard drive 112 for polarization treatment, so that they become opposite poles, so that the two piezoelectric ceramic sheets 500 actively bend in the same direction at the same time.

[0069] Reference Figure 5 , Figure 6 , Figure 7 , Figure 8 and Fig. 9When in use, the bottom base 111 of one jacquard device (jacquard device 104) is close to the bottom base 111 of another jacquard device (jacquard device 103), and the second power connection port 115 of one jacquard device (jacquard device 104) is close to the first power connection port 114 of another jacquard device (jacquard device 103), so that the second power connection port 115 of one jacquard device (jacquard device 104) and the first power connection port 114 of another jacquard device (jacquard device 103) are detachably installed together in a plug-in manner, so as to quickly realize electrical connection, which has the advantage of convenient installation, can meet the demand for rapid installation, and achieves the effect of killing two birds with one stone.

[0070] Although, in Fig. 9 Only four jacquard devices are drawn as schematic diagrams, but in actual use, it should not be limited to installing four jacquard devices at the same time. The jacquard device is used on a warp knitting machine. Multiple jacquard devices need to be set in the warp knitting machine, and the specific number depends on the machine number of the warp knitting machine.

[0071] Reference Figure 5 , Figure 6 and Figure 7 The first power connection port 114 is a male power connection port or a female power connection port, and the second power connection port is a female power connection port or a male power connection port. When the first power connection port 114 is a male power connection port, the second power connection port 115 is a female power connection port. When the first power connection port 114 is a female power connection port, the second power connection port 115 is a male power connection port.

[0072] Reference Figure 6 , Figure 7 and Fig. 9 When disassembly is required, the jacquard device to be disassembled can be directly removed from the comb mounting portion 101. The power can be cut off at the moment the jacquard device is removed. The power-off process is explained below:

[0073] Reference Figure 5 , Figure 6 , Figure 7 , Figure 8 and Fig. 9 The second power connection port 115 of one jacquard device (jacquard device 104) and the first power connection port 114 of another jacquard device (jacquard device 103) can also be electrically connected by plugging, magnetic attraction or pressing.

[0074] The electrical connection between the male electrical port and the female electrical port is achieved by pressure spring contact, ejector pin contact or round ball contact.

[0075] When the male electrical connection port is a conductive pressure spring sheet, the female electrical connection port is a conductive plug slot, and the electrical connection is achieved by pressure spring sheet contact.

[0076] Reference Figure 5 , Figure 6 , Figure 7 , Figure 8 and Fig. 9 When installing, the bottom base 111 of one jacquard device (jacquard device 104) is close to the bottom base 111 of another jacquard device (jacquard device 103), and the second power connection port 115 of one jacquard device (jacquard device 104) is close to the first power connection port 114 of another jacquard device (jacquard device 103). Because the pressure spring sheet of the male power connection port is elastic, it can be directly inserted into the plug-in slot of the female power connection port in a plug-in manner, so that the pressure spring sheet directly abuts against the plug-in slot to achieve electrical connection, and then the bottom base 111 is locked on the comb mounting portion 101 using the tail clip 122.

[0077] Reference Figure 5 , Figure 6 , Figure 7 , Figure 8 and Fig. 9 When disassembling, loosen the locking screw on the tail clip 122, and directly remove the jacquard device (jacquard device 104) from the comb mounting portion 101. Because the pressure spring of the male power port is elastic, the pressure spring can be separated from the plug-in slot by pulling out during the removal of the jacquard device, thereby disconnecting the power.

[0078] When the male electrical connection port is a conductive ejector pin, the female electrical connection port is a conductive pin slot, and the ejector pin can be a conductive spring pin. The electrical connection is achieved by ejector pin contact.

[0079] Reference Figure 5 , Figure 6 , Figure 7 , Figure 8 and Fig. 9 When installing, the bottom base 111 of one jacquard device (jacquard device 104) is close to the bottom base 111 of another jacquard device (jacquard device 103), and the second power connection port 115 of one jacquard device (jacquard device 104) is close to the first power connection port 114 of another jacquard device (jacquard device 103). Because the top pin of the male power connection port can be directly inserted into the pin groove of the female power connection port in a plug-in manner, electrical connection is achieved. Then, the bottom base 111 is locked on the comb mounting portion 101 using the tail clip 122.

[0080] Reference Figure 5 , Figure 6 , Figure 7 , Figure 8 and Fig. 9 When disassembling, after loosening the locking screw on the tail clip 122, the ejector pin can be pulled out from the needle slot during the process of removing the jacquard device, so that the ejector pin and the needle slot are separated, thereby achieving power off.

[0081] When the male electrical connection port is a conductive round ball, the female electrical connection port is a conductive ball groove, and the electrical connection is achieved by round ball contact.

[0082] Reference Figure 5 , Figure 6 , Figure 7 , Figure 8 and Fig. 9 When installing, the bottom base 111 of one jacquard device (jacquard device 104) is close to the bottom base 111 of another jacquard device (jacquard device 103), and the second power connection port 115 of one jacquard device (jacquard device 104) is close to the first power connection port 114 of another jacquard device (jacquard device 103). Because the male power connection port is a round ball, it can be directly inserted into the ball groove of the female power connection port in a plug-in manner, so that the round ball directly abuts against the ball groove to achieve electrical connection, and then the bottom base 111 is locked on the comb mounting portion 101 using the tail clip 122.

[0083] Reference Figure 5 , Figure 6 , Figure 7 , Figure 8 and Fig. 9 When disassembling, loosen the locking screw on the tail clip 122, and directly remove the jacquard device (jacquard device 104) from the comb mounting portion 101. In the process of removing the jacquard device, the round ball of the male power port can be pulled out from the ball groove, so that the round ball is separated from the ball groove, thereby disconnecting the power.

[0084] When the male electrical connection port is a conductive magnetic connector, the female electrical connection port is a conductive magnetic connection slot, and the electrical connection is achieved by magnetic contact.

[0085] Reference Figure 5 , Figure 6 , Figure 7 , Figure 8 and Fig. 9When installing, the bottom base 111 of one jacquard device (jacquard device 104) is close to the bottom base 111 of another jacquard device (jacquard device 103), and the second power connection port 115 of one jacquard device (jacquard device 104) is close to the first power connection port 114 of another jacquard device (jacquard device 103). Because the magnetic connector of the male power connection port is magnetic, it can be directly connected to the magnetic connection groove by magnetic attraction to achieve electrical connection. Then, the bottom base 111 is locked on the comb mounting portion 101 using the tail clip 122.

[0086] Reference Figure 5 , Figure 6 , Figure 7 , Figure 8 and Fig. 9 When disassembling, loosen the locking screw on the tail clip 122, and directly remove the jacquard device (jacquard device 104) from the comb mounting portion 101, so that in the process of removing the jacquard device, the magnetic connector and the magnetic connection groove can be separated by pulling out, thereby disconnecting the power.

[0087] For specific details about the external controller in this embodiment, please refer to the reference provided in the background technology (Chinese invention patent application number: 201710030965.9, publication number: CN106757749B), where the part about the CPU is an external controller in the prior art, which is recorded and explained in detail in the reference, and will not be repeated here.

[0088] Reference Figure 5 , Figure 6 and Figure 7 A plurality of first assembly holes 202 are provided on the rear portion of the base 111, and a plurality of second assembly holes 201 are provided on the printed circuit board 113. The first assembly holes 202 are matched with the second assembly holes 201. After the screws 200 are passed through the second assembly holes, they are locked in the first assembly holes 202, so that the printed circuit board 113 can be detachably mounted on the rear portion of the base 111.

[0089] Reference Figure 5 When the needle pitch needs to be adjusted before the warp knitting machine is operated, a single designated jacquard device can be started as needed. Specifically, an external cable that is separately connected to the external controller is used. The external cable is plugged into the third power port 120 in a pluggable manner to be powered on (input drive power and process signals), thereby driving the single jacquard device that needs to be adjusted separately. After the adjustment is completed, the external cable is directly unplugged to end the adjustment, thereby realizing the quick adjustment of the needle pitch of the designated single jacquard device, which is simple and convenient.

[0090] The needle pitch of a warp knitting machine usually refers to the left and right position of the guide bar mounting part relative to the knitting needle. The left and right distance of the entire row of yarn guide needles relative to the knitting needle is controlled by the slider top screw of the knitting wheel. With the knitting needle as the reference, observe the left and right position of the guide bar mounting part, adjust the direction of the top screw, and move the guide bar mounting part horizontally a little bit to the middle of the knitting needle. The warp knitting machine needs to adjust the needle pitch before normal operation.

[0091] Reference Figure 5 , Figure 6 , Figure 7 When the warp knitting machine is debugging the jacquard device before use, the third power port 120 is powered on, the first power port 114 is not powered on, and the second power port 115 is not powered on. The third power port 120 is powered on only when the stitch length is debugged, and an external cable is connected to the third power port 120 for power. A wire groove 121 is provided on the tail clip 122, and the external cable can be inserted from the wire groove 121 to achieve electrical connection with the third power interface. When the warp knitting machine is working normally, the third power port 120 is idle, no external cable is installed, and no power is supplied.

[0092] Reference Figure 5 , Figure 6 , Figure 7 and Fig. 9 When the warp knitting machine operates normally, the first power port 114, the drive circuit 118, the second power port 115 and the plug-in element 300 are all powered (input drive power and process signal), and the third power port 120 is not powered.

[0093] The other structures are similar to those of the first embodiment and will not be described in detail here.

[0094] Embodiment 7, reference Figure 5 and Figure 6 The difference between the seventh embodiment and the first embodiment is that the rear portion of the plug-in element 300 and the front portion of the printed circuit board 113 are connected together by welding, so that the input end of the plug-in element 300 is electrically connected to the output end of the drive circuit 118, and the output end of the plug-in element 300 can be replaceably mounted on the power connection end of the piezoelectric jacquard element 102 in a plug-in manner, so that the output end of the jacquard driver 112 can be replaceably mounted on the power connection end of the piezoelectric jacquard element 102.

[0095] Reference Figure 5 In this embodiment, the specific power connection terminal of the piezoelectric jacquard element 102 is a copper foil power connection terminal 501 on the tail of the piezoelectric ceramic sheet 500, and a copper foil power connection terminal 501 is respectively provided on the left and right sides of the glass fiber sheet 502, one of the copper foil power connection terminals 501 is a positive electrode, and the other copper foil power connection terminal 501 is a negative electrode.

[0096] Reference Figure 5The plug-in element 300 includes a fourth housing 301 , a plurality of slots 302 disposed in the fourth housing 301 , a plurality of pads 303 disposed in the slots 302 , and a plurality of conductive fourth anti-oxidation layers 304 .

[0097] Reference Figure 5 , a fourth anti-oxidation layer 304 is disposed on each pad 303, a slot 302 extends from the front of the fourth housing 301, through the interior of the fourth housing 301, and finally to the rear of the fourth housing 301, a rear end of the fourth anti-oxidation layer 304 is disposed on the rear of the fourth housing 301, and a front end of the fourth anti-oxidation layer 304 extends into the slot 302. Specifically, two fourth anti-oxidation layers 304 are disposed in one slot 302, one fourth anti-oxidation layer 304 is used as a positive electrode, and the other fourth anti-oxidation layer 304 is used as a negative electrode.

[0098] Reference Figure 5 and Figure 5 The fourth shell 301 is detachably mounted on the power connection end of the piezoelectric jacquard element 102 in a plug-in manner, so that the copper foil power connection end 501 is electrically connected to the corresponding fourth anti-oxidation layer 304 respectively, and the rear end of the fourth anti-oxidation layer 304 is electrically connected to the drive circuit 118 through the printed circuit board 113, so that the copper foil power connection end 501 is electrically connected to the printed circuit board 113, so that the drive circuit 118 drives the yarn guide needle 130 of the piezoelectric jacquard element 102 to swing.

[0099] The other structures are similar to those of the sixth embodiment and will not be described in detail here.

[0100] Embodiment 8, refer to Figure 5 and Figure 6 The difference between the eighth embodiment and the sixth embodiment is that the first power port 114 includes at least one first shell 131 disposed on the left side of the printed circuit board 113 and a plurality of conductive first anti-oxidation power terminals 132. The output end of the first anti-oxidation power terminal 132 is welded on the left side of the printed circuit board 113, so that the first shell 131 is fixedly mounted on the left side of the printed circuit board 113.

[0101] Reference Figure 7 and Figure 8 The output end of the first anti-oxidation power terminal 132 is electrically connected to the first cable 116 and the second cable 117 respectively, and the power connection end of the first anti-oxidation power terminal 132 extends toward the left side of the first housing 131 .

[0102] Reference Figure 6The second power port 115 includes at least one second shell 141 disposed on the right side of the printed circuit board 113 and a plurality of conductive second anti-oxidation power terminals 142. The output end of the second anti-oxidation power terminal 142 is welded on the right side of the printed circuit board 113, so that the second shell 141 is fixedly installed on the right side of the printed circuit board 113.

[0103] Reference Figure 6 and Figure 8 The input end of the second anti-oxidation power terminal 142 is electrically connected to the first bus cable 116 , and the power connection end of the second anti-oxidation power terminal 142 extends toward the right side of the second housing 141 .

[0104] Reference Figure 6 Figure 7 and Fig. 9 When the second power connection port 115 of one jacquard device (jacquard device 104) and the first power connection port 114 of another jacquard device (jacquard device 103) are detachably installed together in a plug-in manner, the first anti-oxidation power terminal 132 is electrically connected to the second anti-oxidation power terminal 142.

[0105] Reference Figure 7 The first anti-oxidation electrical terminal 132 includes at least one conductive first copper core layer and at least one first gold-plated layer, and the first gold-plated layer is plated on the first copper core layer.

[0106] Reference Figure 7 By setting the first gold-plated layer, the first gold-plated layer can protect the first copper core layer and have an anti-oxidation effect, thereby extending the service life of the first anti-oxidation power terminal 132, so that the first anti-oxidation power terminal 132 maintains good conductive performance during long-term use.

[0107] Reference Figure 6 The second anti-oxidation electrical terminal 142 includes at least one conductive second copper core layer and at least one second gold-plated layer, and the second gold-plated layer is plated on the second copper core layer.

[0108] Reference Figure 6 By setting the second gold-plated layer, the second gold-plated layer can protect the second copper core layer and have an anti-oxidation effect, thereby extending the service life of the second anti-oxidation power terminal 142, so that the second anti-oxidation power terminal 142 maintains good conductive performance during long-term use.

[0109] The copper core layer can also be replaced by a conductive copper sheet layer.

[0110] The other structures are similar to those of the sixth embodiment and will not be described in detail here.

[0111] Embodiment 9, refer to Figure 5 , Figure 6 and Figure 7 The difference between the eighth embodiment and the sixth embodiment is that the third power connection port 120 includes at least one third shell 151 disposed on the tail of the printed circuit board 113 and a plurality of third conductive anti-oxidation power terminals. The output end of the third anti-oxidation power terminal is welded on the tail of the printed circuit board 113, so that the third shell 151 is fixedly installed on the tail of the printed circuit board 113, the input end of the third anti-oxidation power terminal is disposed in the third shell 151, and the output end of the third anti-oxidation power terminal is electrically connected to the third wiring 119.

[0112] The third anti-oxidation terminal includes at least one conductive third copper core layer and at least one third gold-plated layer, and the third gold-plated layer is plated on the third copper core layer. The copper core layer can also be replaced by a conductive copper sheet layer.

[0113] By providing the third gold-plated layer, the third gold-plated layer can protect the third copper core layer and have an anti-oxidation effect, thereby extending the service life of the third anti-oxidation terminal and allowing the third anti-oxidation terminal to maintain good conductivity during long-term use.

[0114] The other structures are similar to those of the sixth embodiment and will not be described in detail here.

[0115] The above is only a specific implementation method of the utility model, but the design concept of the utility model is not limited to this. Any non-substantial changes to the utility model using this concept shall be deemed as an infringement of the protection scope of the utility model.

Claims

1. A driving circuit for a jacquard device, characterized in that: The jacquard pattern device includes a power supply VCC1, a power supply VCC2, a resistor R1, a resistor R2, a resistor R3, a resistor R4, a resistor R5, a transistor Q1, a transistor Q2, a transistor Q3, a transistor Q4, a diode D1, and a diode D2. The other end of the resistor R1 is connected to the base of the transistor Q2, the emitter of the transistor Q2 is connected to a signal input terminal INPUT1, the collector of the transistor Q2, the cathode of the diode D1, the base of the transistor Q1, and one end of the resistor R2 are connected together, the other end of the resistor R2, the collector of the transistor Q1, and the power supply VCC2 are connected together, the emitter of the transistor Q1, the anode of the diode D1, and one end of the resistor R3 are connected together, and one end of the piezoelectric ceramic sheet C1 of the jacquard pattern device is electrically connected to the other end of the resistor R3. The other end of the piezoelectric ceramic sheet C1 is grounded, the emitter of the transistor Q4 is connected to an input signal INPUT2, one end of the resistor R1 is electrically connected to the power supply VCC1, the base of the transistor Q4, the other end of the resistor R1 and the base of the transistor Q2 are connected together, the collector of the transistor Q4, the cathode of the diode, the base of the transistor Q3 and one end of the resistor R4 are connected together, the other end of the resistor R4, the collector of the transistor Q3 and the collector of the transistor Q1 are connected together, the emitter of the transistor Q3, the anode of the diode D2 and one end of the resistor R5 are connected together, one end of the piezoelectric ceramic sheet C2 of the jacquard device is electrically connected to the other end of the resistor R5, and the piezoelectric ceramic sheet C1 and the piezoelectric ceramic sheet C2 are connected together and grounded.

2. A driving circuit for a jacquard device as claimed in claim 1, characterized in that: The resistor R1 is a common base bias resistor of the transistor Q2 and the transistor Q4 , the resistor R2 is a relay bias resistor of the transistor Q1 , and the resistor R3 is a current limiting resistor of the piezoelectric ceramic sheet C1 .

3. A driving circuit for a jacquard device as claimed in claim 1, characterized in that: The resistor R4 is a follow-up bias resistor of the transistor Q3, and the resistor R5 is a current limiting resistor of the piezoelectric ceramic piece C2.

4. A driving circuit for a jacquard device as claimed in claim 1, characterized in that: The diode D1 is a reverse biased diode for quickly turning off the transistor Q1 , and the diode D2 is a reverse biased diode for quickly turning off the transistor Q3 .

5. A driving circuit for a jacquard device as claimed in claim 1, characterized in that: The power supply VCC1 is 3-5V, and the power supply VCC2 is 160-200V.

6. A driving circuit for a jacquard device as claimed in claim 1, characterized in that: A diode D3 is further included. The cathode of the diode D3, the other end of the piezoelectric ceramic sheet C1 and the other end of the piezoelectric ceramic sheet C2 are connected together. The anode of the diode D3 is grounded.

7. A driving circuit for a jacquard device as claimed in claim 6, characterized in that: The diode D3 is a voltage stabilizing diode.

8. A driving circuit for a jacquard device as claimed in claim 6, characterized in that: It also includes a freewheeling resistor R6, one end of which is connected to the cathode of the diode D3, the cathode of the diode D3 and the other end of the piezoelectric ceramic sheet C1, the anode of the diode D3 is grounded, and the other end of the freewheeling resistor R6 is electrically connected to the collector of the transistor Q1.

9. A jacquard pattern device, characterized in that: The invention comprises a plurality of piezoelectric jacquard elements arranged in an array and a jacquard driver having at least one driving circuit, wherein the piezoelectric jacquard element comprises at least one yarn guide needle, at least one piezoelectric ceramic sheet C1 and at least one piezoelectric ceramic sheet C2, each of the yarn guide needles is driven by the piezoelectric ceramic sheet C1 and the piezoelectric ceramic sheet C2, the driving circuit is used to drive the piezoelectric ceramic sheet C1 and the piezoelectric ceramic sheet C2 to swing together, the driving circuit has at least one voltage stabilizing diode D3, the cathode of the diode D3, the other end of the piezoelectric ceramic sheet C1 and the other end of the piezoelectric ceramic sheet C2 are connected together, and the anode of the diode D3 is grounded.

10. A jacquard device as claimed in claim 9, characterized in that: The output end of the jacquard driver can be replaceably mounted on the power connection end of the piezoelectric jacquard element, and the driving circuit is the driving circuit of any one of claims 1-8.

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