Multi-station jacquard thread guide device, needle position control method and driver

Abstract

A multi-station Jacquard yarn guide device, a needle position control method, and a driver are disclosed. The driver includes a power supply that outputs a first driving voltage and a second driving voltage. Each yarn guide needle has three different positions: a first position, a second position, and a third position. The first position is the first needle position, the third position is the last needle position, and the second position is located between the first and third positions. In this invention, by setting the voltage of the first driving voltage to be less than the voltage of the second driving voltage when the baffle unit drives the yarn guide needle to switch from the first position to the second position, an additional position is added during the oscillation of the yarn guide needle, resulting in a three-position yarn guide needle that can stop oscillating at the intermediate position.

Description

Technical Field

[0001] This invention relates to the field of piezoelectric Jacquard, and in particular to a multi-station Jacquard yarn guide device, needle position control method, and driver. Background Technology

[0002] With the continuous improvement of warp knitting machine application technology, a three-station jacquard warp knitting jacquard product weaving method has emerged in the textile technology field. This three-station jacquard, with one more station than the conventional two-station jacquard, allows for a richer variety of patterns, greatly enhancing the economic value of the fabric. However, due to the additional station, the drive circuit control of the three-station jacquard is more complex than that of the two-station jacquard.

[0003] Chinese invention patent (application number: 202110903323.1, publication number: CN113789605B) discloses a method for weaving warp-knitted jacquard products using a three-station jacquard.

[0004] Chinese invention patent (application number: 201010587409.X, publication number: CN102400281B) discloses a comb needle device, which is a two-station jacquard. Because the guide needle of the two-station jacquard only has two stations, it cannot stop swinging in the middle position between the two stations, thus making it difficult to meet the requirements of the warp knitting jacquard product weaving method of the three-station jacquard. Summary of the Invention

[0005] This invention provides a multi-station Jacquard yarn guide device, a needle position control method, and a driver for the multi-station Jacquard yarn guide device. Its main purpose is to overcome the defect that the existing Jacquard yarn guide device has only two positions for the yarn guide needle, making it difficult to stop oscillating in the middle position.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0007] A multi-station Jacquard yarn guide device, a needle position control method, and a driver are disclosed. The multi-station Jacquard yarn guide device includes at least one driver, a plurality of first piezoelectric bending actuators with yarn guide needles, and a plurality of second piezoelectric bending actuators with baffle units. The driver includes at least one power supply device that outputs at least one first driving voltage and at least one second driving voltage. The first driving voltage is configured to charge the charging portion of the first piezoelectric bending actuator, and the second driving voltage is configured to charge the charging portion of the second piezoelectric bending actuator. When the baffle unit drives the yarn guide needle to switch from a first position to a second position, the voltage value of the first driving voltage is less than the voltage value of the second driving voltage. The second position is located between the first needle and the last needle of the yarn guide needle. At the middle position, the needle position control method is as follows: when the yarn guide needle swings towards the first working position, the first piezoelectric ceramic sheet is in a discharging state, the second piezoelectric ceramic sheet is in a charging state, and the third piezoelectric ceramic sheet is in a discharging or charging state; when the yarn guide needle swings towards the third working position, the first piezoelectric ceramic sheet is in a charging state, the second piezoelectric ceramic sheet is in a discharging state, the third piezoelectric ceramic sheet is in a discharging state, and the fourth piezoelectric ceramic sheet is in a charging state; when the yarn guide needle moves towards the second working position, the first piezoelectric ceramic sheet is in a charging state, the second piezoelectric ceramic sheet is in a discharging state, the third piezoelectric ceramic sheet is in a charging state, and the fourth piezoelectric ceramic sheet is in a discharging state, the voltage applied to the first piezoelectric ceramic sheet is less than the voltage applied to the third piezoelectric ceramic sheet.

[0008] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0009] This invention has a simple structure and strong practicality. By setting the voltage value of the first driving voltage to be less than the voltage value of the second driving voltage when the baffle unit drives the yarn guide needle to switch from the first position to the second position, the yarn guide needle adds a station during the swinging process, thereby making the yarn guide needle have three stations, so that the yarn guide needle can stop swinging at the middle position. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the Jacquard yarn guide device.

[0011] Figure 2 This is a schematic diagram of the structure of the present invention.

[0012] Figure 3 This is a schematic diagram of the Jacquard yarn guide device.

[0013] Figure 4 This is a schematic diagram of the baffle unit.

[0014] Figure 5 This is a schematic diagram of the three working positions of the yarn guide needle.

[0015] Figure 6 This is a schematic diagram of the structure where the yarn guide needle is in the first position.

[0016] Figure 7 This is a schematic diagram of the structure where the yarn guide needle is in the second working position.

[0017] Figure 8 This is a schematic diagram of the structure where the yarn guide needle is in the third position.

[0018] Figure 9 This is a schematic diagram of the driver module.

[0019] Figure 10 This is a schematic diagram of the structure of Example Sixteen. Implementation

[0020] The specific embodiments of the present invention will now be described with reference to the accompanying drawings.

[0021] Example 1: Multi-station Jacquard yarn guide device, needle position control method and driver. The multi-station Jacquard yarn guide device, needle position control method and driver can be applied to a textile machine. The textile machine has at least one multi-station Jacquard yarn guide device. The textile machine can be a warp knitting machine, which can be a double needle bed Raschel warp knitting machine, a single Jacquard warp knitting machine, a double Jacquard warp knitting machine or a triple Jacquard warp knitting machine.

[0022] Reference Figure 1 , Figure 2 , Figure 3 and Figure 7 The multi-station Jacquard yarn guide device includes at least one driver 17, a plurality of first piezoelectric bending actuators 11 having yarn guide needles 21, and a plurality of second piezoelectric bending actuators 12 having baffle units 22. The driver 17 includes at least one power supply 13, which outputs at least one first driving voltage 15 and at least one second driving voltage 16. The first driving voltage 15 is configured to charge the charging portion of the first piezoelectric bending actuator 11, and the second driving voltage 16 is configured to charge the charging portion of the first piezoelectric bending actuator 11. The charging section of the second piezoelectric bending actuator 12 is charged. When the baffle unit 22 drives the guide needle 21 to switch from the first position 23 to the second position 24, a portion of the guide needle 21 abuts against a portion of the corresponding baffle unit 22. The voltage value of the first driving voltage 15 is less than the voltage value of the second driving voltage 16. Both the first position 23 and the second position 24 are located within the swing space 68 of the guide needle 21. The second position 24 is located at the midpoint between the first needle and the last needle of the guide needle 21. The distance between the first needle and the last needle is twice the needle pitch.

[0023] Reference Figure 1 , Figure 3 and Figure 7 When the second piezoelectric ceramic part of the second piezoelectric bending actuator 12 is charged by the second driving voltage 16, the second piezoelectric ceramic part drives the baffle unit 22 to switch between the first position 23 and the second position 24. When the first piezoelectric ceramic part of the first piezoelectric bending actuator 11 is charged by the first driving voltage 15, the first piezoelectric ceramic part drives the yarn guide needle 21 to swing.

[0024] Reference Figure 3 and Figure 5 The multi-station includes at least one first station 31, at least one second station 32 and at least one third station 33. The second station 32 is located in the middle between the first station 31 and the third station 33. The distance between the first station 31 and the third station 33 is two stitch lengths. The distance between the first station 31 and the second station 32 is one stitch length. The distance between the second station 32 and the third station 33 is one stitch length. The first position 23 is located at the third station 33 and the second position 24 is located at the second station 32.

[0025] Reference Figure 1 and Figure 2 The first driving voltage 15 has a value range of 0 to 200V. For example, in this embodiment, the first driving voltage 15 can be 150V and the second driving voltage 16 can be 200V, so that the charging voltage of the first piezoelectric ceramic part is 150V and the discharging voltage of the first piezoelectric ceramic part is 0V, the charging voltage of the second piezoelectric ceramic part is 200V and the discharging voltage of the second piezoelectric ceramic part is 0V. Of course, more different first driving voltages 15 and second driving voltages 16 can be set, including but not limited to 150V and 200V. More values ​​can be derived by analogy based on the fact that when the baffle unit 22 drives the guide needle 21 to switch from the first position 23 to the second position 24, the voltage value of the first driving voltage 15 is less than the voltage value of the second driving voltage 16. This will not be elaborated here.

[0026] Example 2, refer to Figure 1 The difference between this second embodiment and the first embodiment is that the first driving voltage 15 includes a first voltage 34 and a second voltage 35, and the second driving voltage 16 includes a third voltage 36 and a fourth voltage 37.

[0027] Reference Figure 1 , Figure 3 and Figure 4 The first piezoelectric bending actuator 11 includes a first piezoelectric ceramic sheet 38, a second piezoelectric ceramic sheet 39, a first substrate 40 sandwiched between the first piezoelectric ceramic sheet 38 and the second piezoelectric ceramic sheet 39, and two first conductive units 44 disposed on the tail of the first substrate 40.

[0028] Reference Figure 1 , Figure 3 and Figure 4 The second piezoelectric bending actuator 12 includes a third piezoelectric ceramic sheet 45, a fourth piezoelectric ceramic sheet 46, a second substrate 42 sandwiched between the third piezoelectric ceramic sheet 45 and the fourth piezoelectric ceramic sheet 46, and two second conductive units 43 disposed on the tail of the second substrate 42.

[0029] Reference Figure 3 and Figure 4 The first driving voltage 15 is applied to the first piezoelectric ceramic sheet 38 or the second piezoelectric ceramic sheet 39 through the first conductive unit 44, and the second driving voltage 16 is applied to the third piezoelectric ceramic sheet 45 or the fourth piezoelectric ceramic sheet 46 through the second conductive unit 43.

[0030] Reference Figure 1 , Figure 2 , Figure 3 and Figure 4 When the corresponding first piezoelectric ceramic sheet 38 is in a charging state, a first voltage 34 is applied to the corresponding first piezoelectric ceramic sheet 38 through the corresponding first conductive unit 44, causing the first piezoelectric ceramic sheet 38 to drive the corresponding yarn guide needle 21 to swing towards the corresponding baffle unit 22. When the corresponding third piezoelectric ceramic sheet 45 is in a charging state, a third voltage 36 is applied to the corresponding third piezoelectric ceramic sheet 45 through the corresponding second conductive unit 43, causing the third piezoelectric ceramic sheet 45 to drive the corresponding baffle unit 22 to swing towards the corresponding yarn guide needle 21. The first piezoelectric ceramic sheet 38, a second piezoelectric ceramic sheet 39, and a first substrate 40 constitute the first piezoelectric ceramic part, and the third piezoelectric ceramic sheet 45, a fourth piezoelectric ceramic sheet 46, and a second substrate 42 constitute the second piezoelectric ceramic part.

[0031] Reference Figure 1 , Figure 2 , Figure 3 and Figure 4 When the corresponding second piezoelectric ceramic sheet 39 is in a charging state, the second voltage 35 is applied to the corresponding second piezoelectric ceramic sheet 39 through the corresponding first conductive unit 44, causing the second piezoelectric ceramic sheet 39 to drive the corresponding guide needle 21 to swing toward the first work station 31. When the corresponding fourth piezoelectric ceramic sheet 46 is in a charging state, the fourth voltage 37 is applied to the corresponding fourth piezoelectric ceramic sheet 46 through the corresponding second conductive unit 43, causing the fourth piezoelectric ceramic sheet 46 to drive the corresponding baffle unit 22 to swing toward the first position 23.

[0032] Reference Figure 1 , Figure 2 , Figure 3 and Figure 4In this embodiment, the first conductive unit 44 specifically includes a first conductive copper sheet disposed on one side of the first substrate 40 and a second conductive copper sheet disposed on the other side of the first substrate 40. The first conductive copper sheet is electrically connected to the first piezoelectric ceramic sheet 38, and the second conductive copper sheet is electrically connected to the second piezoelectric ceramic sheet 39. The second conductive unit 43 includes a third conductive copper sheet disposed on one side of the second substrate 42 and a fourth conductive copper sheet disposed on the other side of the second substrate 42. The third conductive copper sheet is electrically connected to the third piezoelectric ceramic sheet 45, and the fourth conductive copper sheet is electrically connected to the fourth piezoelectric ceramic sheet 46. Both the first substrate 40 and the second substrate 42 can be glass fiber sheets, which can also be called fiberglass sheets or fiberglass steel sheets. Fiberglass sheets are products made by pre-impregnating glass fiber yarn with styrene-based polyester resin and then heating, curing, and pultruding.

[0033] Reference Figure 1 , Figure 2 , Figure 3 and Figure 4 When the first piezoelectric ceramic sheet 38 is in a charging state, the second piezoelectric ceramic sheet 39 is in a discharging state; when the first piezoelectric ceramic sheet 38 is in a discharging state, the second piezoelectric ceramic sheet 39 is in a charging state; when the third piezoelectric ceramic sheet 45 is in a discharging state, the fourth piezoelectric ceramic sheet 46 is in a charging state; when the third piezoelectric ceramic sheet 45 is in a charging state, the fourth piezoelectric ceramic sheet 46 is in a discharging state. The voltage range during charging is 40-200V, or it can be 100V-200V or 150V-190V. The voltage is 0V during discharging.

[0034] Reference Figure 1 , Figure 2 , Figure 3 and Figure 4 By setting the voltage value of the first driving voltage 15 to be less than the voltage value of the second driving voltage 16 when the baffle unit 22 drives the yarn guide needle 21 to switch from the first position 23 to the second position 24, the yarn guide needle 21 adds a station during the swing process, thereby making the yarn guide needle 21 have three stations, so that the yarn guide needle 21 can stop swinging at the middle position.

[0035] This needle position control method is applied to a multi-station Jacquard yarn guide device. When the yarn guide needle 21 swings toward the first station 31, the first piezoelectric ceramic plate 38 is in a discharging state, the second piezoelectric ceramic plate 39 is in a charging state, and the third piezoelectric ceramic plate 45 is in a discharging or charging state. When the yarn guide needle 21 swings toward the third station 33, the first piezoelectric ceramic plate 38 is in a charging state, the second piezoelectric ceramic plate 39 is in a discharging state, the third piezoelectric ceramic plate 45 is in a discharging state, and the fourth piezoelectric ceramic plate 46 is in a charging state. When the yarn guide needle 21 moves toward the second station 32, the first piezoelectric ceramic plate 38 is in a charging state, the second piezoelectric ceramic plate 39 is in a discharging state, the third piezoelectric ceramic plate 45 is in a charging state, and the fourth piezoelectric ceramic plate 46 is in a discharging state. At this time, the voltage applied to the first piezoelectric ceramic plate 38 is less than the voltage applied to the third piezoelectric ceramic plate 45.

[0036] Other structures are similar to those in Embodiment 1, and will not be described in detail here.

[0037] Example 3, refer to Figure 1 The difference between this embodiment 3 and embodiment 1 is that the textile machinery includes a main controller 14 and at least one multi-station Jacquard yarn guide device. The main controller 14 sends at least two bit stream data to the multi-station Jacquard yarn guide device. These bit stream data are divided into two groups. One group of bit stream data is used to control the swing of a corresponding yarn guide needle 21, and the other group of bit stream data is used to control the swing of a corresponding baffle unit 22.

[0038] Reference Figure 1 and Figure 2 The driver 17 also includes at least one transformer module 18 and a drive circuit board 19 electrically connected to the transformer module 18. The transformer module 18 is used to increase or decrease the voltage output by the power supply device 13. The first drive voltage 15 converts the voltage value to a preset voltage value through the transformer module 18, and the second drive voltage 16 converts the voltage value to a preset voltage value through the transformer module 18.

[0039] Reference Figure 1 and Figure 3The drive circuit board 19 is equipped with multiple first drive circuits 51, multiple second drive circuits 52, multiple third drive circuits 53, and multiple fourth drive circuits 54. The first drive circuit 51 drives the corresponding first piezoelectric ceramic sheet 38 to swing; the second drive circuit 52 drives the corresponding second piezoelectric ceramic sheet 39 to swing; the third drive circuit 53 drives the corresponding third piezoelectric ceramic sheet 45 to swing; and the fourth drive circuit 54 drives the corresponding fourth piezoelectric ceramic sheet 46 to swing. The main controller 14 transmits one bit of data to the first drive circuit 51 through the power supply device 13. The first drive circuit 51 drives the first piezoelectric ceramic sheet 38 to swing according to the received bit data. A first voltage 34 is applied to the first piezoelectric ceramic sheet 38 through the first drive circuit 51. The main controller 14 then... The source device 13 transmits one bit of data to the second drive circuit 52. The second drive circuit 52 drives the second piezoelectric ceramic sheet 39 to swing according to the obtained bit data. The second voltage 35 is applied to the second piezoelectric ceramic sheet 39 through the second drive circuit 52. The main controller 14 transmits one bit of data to the third drive circuit 53 through the power supply device 13. The third drive circuit 53 drives the third piezoelectric ceramic sheet 45 to swing according to the obtained bit data. The third voltage 36 is applied to the third piezoelectric ceramic sheet 45 through the third drive circuit 53. The main controller 14 transmits one bit of data to the fourth drive circuit 54 through the power supply device 13. The fourth drive circuit 54 drives the fourth piezoelectric ceramic sheet 46 to swing according to the obtained bit data. The fourth voltage 37 is applied to the fourth piezoelectric ceramic sheet 46 through the fourth drive circuit 54.

[0040] Reference Figure 1 The circuit structures of the first driving circuit 51, the second driving circuit 52, the third driving circuit 53, and the fourth driving circuit 54 can be referenced from Chinese Utility Model Patent (Application No.: 202123378011.8, Publication No.: CN218124570U) or other existing piezoelectric ceramic driving circuits in the art, and will not be described in detail here. The main controller 14 can also be referred to as a control computer in the art.

[0041] Reference Figure 3 A connector 20 can be provided on the front of the drive circuit board 19, which is electrically connected to the first conductive unit 44 and the second conductive unit 43 respectively. The connection can be made by plugging and unplugging or by soldering them together. The drive circuit board 19 can be powered by side access or by a conductive spring pin, which can also be called a push pin.

[0042] Other structures are similar to those in Embodiment 1, and will not be described in detail here.

[0043] Example 4, refer to Figure 1and Figure 2 The difference between this fourth embodiment and the first embodiment is that in the multi-station Jacquard yarn guide device, since the yarn guide needle 21 has three station states, at least two bits of data are needed for control, i.e., there are two input terminals. One input terminal controls the ceramic plates (first piezoelectric ceramic plate 38 and second piezoelectric ceramic plate 39) of the yarn guide needle 21, and the other input terminal controls the ceramic plates (third piezoelectric ceramic plate 45 and fourth piezoelectric ceramic plate 46) of the baffle unit 22. (Refer to...) Figure 2 As shown, in Figure 2 Specifically, Ca is the equivalent capacitance of the first piezoelectric ceramic sheet 38, Cb is the equivalent capacitance of the second piezoelectric ceramic sheet 39, Cc is the equivalent capacitance of the third piezoelectric ceramic sheet 45, and Cd is the equivalent capacitance of the fourth ceramic sheet. Each piezoelectric ceramic sheet still consists of two sets of identical driving circuits.

[0044] Reference Figure 1 and Figure 2 The operating states of the first piezoelectric bending actuator 11 and the second piezoelectric bending actuator 12 are shown in the table below:

[0045] Signal Input 1 Input terminal of drive circuit a Input terminal of drive circuit b piezoelectric ceramic plate status of yarn guide needle 21 0 0 (charging) 1 (Discharge) swing to the left 1 1 (Discharge) 0 (charging) swing to the right Signal Input 2 Input terminal of drive circuit a Input terminal of drive circuit b piezoelectric ceramic sheet state of baffle unit 22 0 0 (charging) 1 (Discharge) swing to the left 1 1 (Discharge) 0 (charging) swing to the right

[0046] Based on the three-station working principle, the required oscillation directions of the piezoelectric ceramic plates of the guide needle 21 and the baffle unit 22 at the three stations are shown in the table below:

[0047] Based on the above tables, the signal input data corresponding to the three workstations are shown in the following table:

[0048] The direction of the piezoelectric ceramic sheet of the yarn guide needle 21 The direction of the piezoelectric ceramic sheet of the baffle unit 22 Signal Input 1 Signal Input 2 Left workstation left You can go left or right. 0 0 or 1 are both acceptable intermediate workstation To the right left 1 0 Right workstation To the right To the right 1 1

[0049] Other structures are similar to those in Embodiment 1, and will not be described in detail here.

[0050] Example 5, refer to Figure 1 and Figure 2 The difference between this fifth embodiment and the first embodiment is that: the transformer module 18 is used to increase or decrease the voltage output by the power supply device 13. The first voltage 34 is converted into a preset voltage value by the transformer module 18; the second voltage 35 is converted into a preset voltage value by the transformer module 18; the third voltage 36 is converted into a preset voltage value by the transformer module 18; and the fourth voltage 37 is converted into a preset voltage value by the transformer module 18.

[0051] Reference Figure 1 and Figure 2 The transformer module 18 can be a Zener diode or a Zener resistor, or it can be a boost circuit.

[0052] The following explanation uses a Zener diode as an example:

[0053] Reference Figure 2 When the power supply unit 13 outputs only a 200V voltage, four Zener diodes can be used. These Zener diodes are electrically connected to the piezoelectric ceramic plate via a driving circuit. The voltage is stepped down by the Zener diodes, and changing their voltage values ​​yields the desired output voltage. For example, if the Zener diodes have voltage values ​​of 10V, 20V, 30V, and 40V respectively, and the supply voltage is 200V, then four different output voltages of 190V, 180V, 170V, and 160V can be obtained. By changing the Zener diodes' voltage values, the output voltage can be changed, thus achieving the effect of the first voltage 34 being converted to a preset voltage value by the transformer module 18, the second voltage 35 being converted to a preset voltage value by the transformer module 18, the third voltage 36 being converted to a preset voltage value by the transformer module 18, and the fourth voltage 37 being converted to a preset voltage value by the transformer module 18.

[0054] Other structures are similar to those in Embodiment 1, and will not be described in detail here.

[0055] Example 6, refer to Figure 1 and Figure 9 The difference between this sixth embodiment and the first embodiment is that the power supply device 13 outputs four different voltages, which can correspond to the first voltage 34, the second voltage 35, the third voltage 36, and the fourth voltage 37, respectively. The first voltage 34 is applied to the first piezoelectric ceramic sheet 38 through the first driving circuit 51, the second voltage 35 is applied to the second piezoelectric ceramic sheet 39 through the second driving circuit 52, the third voltage 36 is applied to the first piezoelectric ceramic sheet 38 through the third driving circuit 53, and the fourth voltage 37 is applied to the fourth piezoelectric ceramic sheet 46 through the fourth driving circuit 54. The values ​​of the first voltage 34, the second voltage 35, the third voltage 36, and the fourth voltage 37 can all be in the range of 0 to 200V.

[0056] Other structures are similar to those in Embodiment 1, and will not be described in detail here.

[0057] Example 7, referring to Figure 1 and Figure 2 The difference between this seventh embodiment and the first embodiment is that the values ​​of the first voltage 34 and the third voltage 36 are set according to the pattern data. The value range of the second voltage 35 is the same as that of the first voltage 34. The value of the fourth voltage 37 is less than that of the first voltage 34, the second voltage 35, and the third voltage 36.

[0058] Other structures are similar to those in Embodiment 1, and will not be described in detail here.

[0059] Example 8, refer to Figure 1The difference between this embodiment eight and embodiment one is that: in this embodiment, the value range of the first voltage 34 is 0 to 160V, the value range of the second voltage 35 is 0 to 160V, the value range of the third voltage 36 is 0 to 200V, and the value range of the fourth voltage 37 is 0 to 100V.

[0060] Reference Figure 5 The following describes the oscillation of the guide needle 21 at the first station 31, the second station 32, and the third station 33:

[0061] Reference Figure 6 When the guide needle 21 swings to the first position 31 and the baffle unit 22 switches to the first position 23, the first voltage 34 can be 0V, the second voltage 35 is 160V, the third voltage 36 is 0V, and the fourth voltage 37 is 100V. Specifically, 160V is applied to the second piezoelectric ceramic sheet 39, 100V is applied to the fourth piezoelectric ceramic sheet 46, the voltage on the first piezoelectric ceramic sheet 38 is 0V, and the voltage on the third piezoelectric ceramic sheet 45 is 0V.

[0062] Reference Figure 6 By setting the output voltage of the fourth voltage 37 to be 100V lower than the conventional voltage, it is beneficial to the lifespan of the fourth piezoelectric ceramic sheet 46 and to reduce drive losses. When the baffle unit 22 is in the first position 23, it does not need a voltage of 200V, because it only needs to be on the right and does not require a lot of force. The conventional method can only output 200V.

[0063] Reference Figure 7 When the baffle unit 22 drives the guide needle 21 to switch from the first position 23 to the second position 24, the first voltage 34 is 160V, the second voltage 35 is 0V, the third voltage 36 is 200V, and the fourth voltage 37 is 0V. Specifically, 160V is applied to the first piezoelectric ceramic sheet 38, 200V is applied to the third piezoelectric ceramic sheet 45, the voltage on the second piezoelectric ceramic sheet 39 is 0V, and the voltage on the fourth piezoelectric ceramic sheet 46 is 0V.

[0064] Reference Figure 8 When the guide needle 21 swings to the third position 33 and the baffle unit 22 switches to the first position 23, the first voltage 34 is 160V, the second voltage 35 is 0V, the third voltage 36 is 0V, and the fourth voltage 37 is 100V. Specifically, 160V is applied to the first piezoelectric ceramic sheet 38, 0V is applied to the third piezoelectric ceramic sheet 45, the voltage on the second piezoelectric ceramic sheet 39 is 0V, and the voltage on the fourth piezoelectric ceramic sheet 46 is 100V.

[0065] The other structures are similar to those in Embodiment 1, and will not be described in detail here.

[0066] Example 9, referring to Figure 1 The difference between this embodiment nine and embodiment one is that the driver 17 further includes a conductive wire, and the power supply device 13 and the transformer module 18 are electrically connected through the conductive wire.

[0067] Other structures are similar to those in Embodiment 1, and will not be described in detail here.

[0068] Example 10, referring to Figure 1 and Figure 3 The difference between Embodiment 10 and Embodiment 1 is that the multi-station Jacquard yarn guide device includes at least one driver 17, a plurality of first piezoelectric bending actuators 11 with yarn guide needles 21, and a plurality of second piezoelectric bending actuators 12 with baffle units 22. It also includes at least one base 60, a plurality of first piezoelectric bending actuators 11 disposed on the base 60, and a plurality of second piezoelectric bending actuators 12 disposed on the base 60. Each first piezoelectric bending actuator 11 includes a first yarn guide needle 21 and a first piezoelectric ceramic portion, which drives the first yarn guide needle 21 to oscillate. The first yarn guide needle 21 is disposed on the front part of the first piezoelectric ceramic portion. Each second piezoelectric bending actuator 12 includes a second piezoelectric ceramic portion and a baffle unit 22, which is disposed on the front part of the second piezoelectric ceramic portion. The second piezoelectric ceramic portion drives the corresponding baffle unit 22 to oscillate independently. The base 60 is made of aluminum alloy, magnesium alloy, aluminum-magnesium alloy, carbon fiber, or resin.

[0069] Reference Figure 3 The first piezoelectric bending actuator 11 and the second piezoelectric bending actuator 12 are both arranged laterally on the same side of the base 60, forming a single-layer structure 61. A matching second piezoelectric bending actuator 12 is provided in the lateral direction of each first piezoelectric bending actuator 11, which is the swing direction of the yarn guide needle 21. A corresponding baffle unit 22 is arranged in the swing direction of each yarn guide needle 21. The baffle unit 22 is made of stainless steel. The yarn guide needle 21 is made of stainless steel.

[0070] Reference Figure 3 , Figure 5 , Figure 6 and Figure 7 Each baffle unit 22 is adapted to an adjacent guide needle 21, and the second piezoelectric bending actuator 12 is used to actuate the baffle unit 22 to switch between the first position 23 and the second position 24.

[0071] Reference Figure 5When the guide needle 21 does not deviate, the corresponding baffle unit 22 does not limit the guide needle 21. When the baffle unit 22 restricts the corresponding guide needle 21 to the second position 24, the corresponding guide needle 21 deviates by one stitch length. When the baffle unit 22 restricts the corresponding guide needle 21 to the first position 23, the corresponding guide needle 21 deviates by two stitch lengths.

[0072] Reference Figure 1 , Figure 3 , Figure 4 and Figure 5 By setting the voltage value of the first driving voltage 15 to be less than the voltage value of the second driving voltage 16, the torque generated when the second piezoelectric bending actuator 12 swings is greater than the torque generated when the first piezoelectric bending actuator 11 swings.

[0073] Reference Figure 1 and Figure 5 A plurality of stops 62 are arranged laterally on the foremost part of the base 60. Each baffle unit 22 is equipped with two stops 62. These stops 62 restrict a portion of the baffle unit 22 from shifting along the moving direction. These stops 62 are arranged laterally to the moving direction on both sides of the swing space 68 of the baffle unit 22. Each baffle unit 22 has at least one protrusion 63, which protrudes laterally to the moving direction and extends into the intermediate space 64 between two stops 62 belonging to the baffle unit 22. The width of the intermediate space 64 is one pin pitch.

[0074] Reference Figure 5 The core function of the multi-station Jacquard yarn guide device is that, in addition to the yarn guide needle 21 swinging left and right, it must also be able to accurately stop at the second station 32. Furthermore, each yarn guide needle 21 swings independently, and at the same time, each different yarn guide needle 21 can be in a different station, rather than entering the same station at the same time.

[0075] Reference Figure 1 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 8 By setting the torque of the second piezoelectric bending actuator 12 to be greater than that of the first piezoelectric bending actuator 11, the baffle unit 22 can stably and effectively push the corresponding yarn guide needle 21 from the first position 23 toward the second position 24, that is, from the third station 33 to the second station 32, thereby stably limiting the yarn guide needle 21 by the baffle unit 22, so that the baffle unit 22 can stably switch between the second position 24 and the first position 23, and the yarn guide needle 21 can stably switch between the second position 24 and the first position 23.

[0076] Reference Figure 5 , Figure 6 , Figure 7 and Figure 8 When the initial moving position of the yarn guide needle 21 is the first position 23, the baffle unit 22 pushes the yarn guide needle 21 from the first position 23 to the second position 24, thereby achieving the effect of switching the yarn guide needle 21 from the third station 33 to the second station 32.

[0077] Reference Figure 1 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 8 By setting a second piezoelectric bending actuator 12 to drive the corresponding baffle unit 22 in a swinging manner, on the one hand, each baffle unit 22 can be independently switched between the second position 24 and the first position 23, so that each corresponding yarn guide needle 21 can enter the second station 32 or the third station 33 separately, thereby effectively realizing the technical requirements of three stations. On the other hand, the second piezoelectric bending actuator 12 has a simple structure and is easy to control, which reduces the overall technical difficulty of the multi-station Jacquard yarn guide needle device and improves the stability of the baffle unit 22 blocking the yarn guide needle 21 after switching between the second position 24 and the first position 23, achieving a dual effect.

[0078] Reference Figure 1 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 8 In this embodiment, the torque of the baffle unit 22 is greater than the torque of the first piezoelectric bending actuator 11. By setting the torque of the baffle unit 22 to be greater than the torque of the first piezoelectric bending actuator 11, on the one hand, the thrust provided by the baffle unit 22 is greater than the force of the yarn guide needle 21 swinging in the first piezoelectric bending actuator 11, thereby effectively supporting the yarn guide needle 21. This causes the yarn guide needle 21 to stop swinging after being blocked by the baffle unit 22, thus effectively limiting the switching of the yarn guide needle 21 between the second station 32 and the third station 33. On the other hand, it prevents the yarn guide needle 21 from passing through the baffle unit 22 after being blocked by it, thereby preventing the occurrence of needle deviation, achieving a dual effect.

[0079] Reference Figure 3 and Figure 4Taking a second piezoelectric bending actuator 12 and a first piezoelectric bending actuator 11 as an example, the arrangement order is second piezoelectric bending actuator 12 / first piezoelectric bending actuator 11 / second piezoelectric bending actuator 12 / first piezoelectric bending actuator 11 / second piezoelectric bending actuator 12 / first piezoelectric bending actuator 11 / second piezoelectric bending actuator 12 / first piezoelectric bending actuator 11 / second piezoelectric bending actuator 12 / first piezoelectric bending actuator 11 / second piezoelectric bending actuator 12 / first piezoelectric bending actuator 11 / second piezoelectric bending actuator 12 / first piezoelectric bending actuator 11 / second piezoelectric bending actuator 12 / first piezoelectric bending actuator 11, arranged horizontally to form a single-layer structure 61.

[0080] Reference Figure 3 By setting the first piezoelectric bending actuator 11 and the second piezoelectric bending actuator 12 to be arranged laterally on the same side of the base 60 and forming a single-layer structure 61, only the piezoelectric Jacquard element of the single-layer structure 61 is needed to achieve the effect of stopping the yarn guide needle 21 at three different work positions, so that the multi-work position Jacquard yarn guide needle device has the same thickness as the original two-work position Jacquard.

[0081] In this embodiment, the total number of yarn guide needles 21, the total number of first piezoelectric bending actuators 11, the total number of second piezoelectric bending actuators 12, and the total number of baffle units 22 are all the same and correspond one-to-one. When there are 8 first piezoelectric bending actuators 11 on a base 60, there are 8 corresponding yarn guide needles 21, 8 second piezoelectric bending actuators 12, and 8 baffle units 22. When there are 16 first piezoelectric bending actuators 11 on a base 60, there are 16 corresponding yarn guide needles 21, 16 second piezoelectric bending actuators 12, and 16 baffle units 22. Of course, more yarn guide needles 21 can be set, including but not limited to 8 or 16 needles, and so on.

[0082] Other structures are similar to those in Embodiment 1, and will not be described in detail here.

[0083] Example 11, referring to Figure 3 and Figure 4 The difference between this embodiment eleven and embodiment ten is that the protrusion 63 extends from top to bottom into the intermediate space 64. Each stop 62 is held at at least two different heights on the foremost part of the base 60.

[0084] Reference Figure 3 , Figure 4 and Figure 5 The intermediate space 64 is constructed as a groove, which is positioned at the front of the base 60.

[0085] Reference Figure 3 and Figure 5 The stop 62 includes a comb tooth portion 65 and a stop block 66 disposed on one side of the comb tooth portion 65. The stop block 66 is adapted to an adjacent stop plate unit 22. Among these stops 62, the intermediate space 64 is sandwiched between one stop block 66 and another adjacent comb tooth portion 65.

[0086] Reference Figure 3 , Figure 4 and Figure 5 A cavity is provided between the two comb teeth 65, and a portion of the yarn guide needle 21 is disposed within the cavity. The cavity is a swing space 68 for a portion of the yarn guide needle 21. A stop block 66 is located below the swing space 68, and an intermediate space 64 is located below and connected to the swing space 68. The width of the cavity is two needle pitches. The head of the yarn guide needle 21 extends outside the cavity, and a yarn guide hole 67 is provided on the head of the yarn guide needle 21.

[0087] Reference Figure 3 and Figure 5 When the baffle unit 22 swings to the opposite side of the comb tooth portion 65 (the opposite side is the side away from the comb tooth portion 65), the baffle unit 22 is blocked by the adjacent comb tooth portion 65, so that the baffle unit 22 stops swinging at the first position 23. At this time, the baffle unit 22 is used to prevent the guide needle 21 from swinging at the third position 33.

[0088] Reference Figure 3 and Figure 5 By setting the comb tooth portion 65 and the stop block 66, the comb tooth portion 65 is used to block the baffle unit 22 so that the baffle unit 22 stops swinging at the first position 23, so as to accurately achieve the effect of the baffle unit 22 switching to the first position 23. The stop block 66 is used to block the protrusion 63 of the baffle unit 22 so that the baffle unit 22 stops swinging at the second position 24, so as to achieve the effect of the baffle unit 22 switching from the second position 24 to the first position 23.

[0089] Reference Figure 3 , Figure 4 and Figure 5 When the baffle unit 22 stops swinging because the stop block 66 restricts it to the second position 24, the baffle unit 22 is used to limit the corresponding guide needle 21 to stop swinging at the second station 32. When the baffle unit 22 stops swinging because the comb tooth part 65 restricts it to the first position 23, or when the baffle unit 22 is used to block the guide needle 21 from swinging at the third station 33, the guide needle 21 can stop swinging at three different stations after being blocked by the corresponding baffle unit 22, thereby achieving the effect of the guide needle 21 being able to switch back and forth between the three stations.

[0090] Reference Figure 5 and Figure 6 In this embodiment, the other side of the comb tooth portion 65 is used to limit the adjacent baffle unit 22 to the first position 23.

[0091] Working principle of a three-station workstation:

[0092] The existing two-station Jacquard swing amplitude is one groove needle position, while the multi-station Jacquard yarn guide needle device, due to the addition of one station, has a swing amplitude of two groove needle positions (two needle pitches). That is, without lateral movement, its swing amplitude is two groove needle positions (two needle pitches).

[0093] The multi-station Jacquard yarn guide device refers to the yarn guide needle 21, which, in addition to swinging left and right, can also accurately stop at the middle position (i.e., the second station 32 position), and the baffle unit 22 corresponds to the second position 24.

[0094] Reference Figure 3 , Figure 4 and Figure 5 The two-station jacquard can only swing left and right, and its stopping position is fixed and accurate. This fixed and accurate position is due to the comb teeth 65 of the base 60 being opened according to calculated data. When the guide needle 21 swings left or right, it will stop on the tooth wall. Since the spacing of the tooth walls is calculated, as long as the tooth wall spacing is correct, the needle position is correct. The piezoelectric ceramic sheet generates a swinging torque after charging. A complete piezoelectric ceramic sheet capable of swinging left and right is composed of two individual piezoelectric ceramic sheets bonded to a glass fiber sheet. Each individual piezoelectric ceramic sheet is responsible for one swing direction; that is, when one sheet is charged and the other is discharged, the correct swinging torque is generated, and the piezoelectric ceramic sheet will swing left or right. This is the basic swinging principle of the piezoelectric ceramic sheet.

[0095] Reference Figure 5 As long as a sufficiently large torque is generated, the guide needle 21 will be pressed tightly against the wall of one side of the comb tooth part 65 under the drive of the first piezoelectric ceramic part, and will not be deflected by the yarn, so it can accurately pass through the center of the two groove needles.

[0096] Reference Figure 5 The groove has a width of one stitch pitch, the swing space 68 has a width of two stitch pitches, and there is a stop 66 between the groove and the swing space 68. The stop 66 can be stepped or triangular in shape.

[0097] Refer to entry 3 and Figure 5The first piezoelectric ceramic part drives the yarn guide needle 21 to swing in the swing space 68. Its yarn guide needle 21 is higher than the stop block 66, so it is not affected by the stop block 66. Since the width of the swing space 68 is the width of two needle pitches, the first piezoelectric ceramic part drives the yarn guide needle 21 to swing to a position of two needle pitches in the swing space 68.

[0098] Reference Figure 3 , Figure 5 , Figure 6 and Figure 7 After the second piezoelectric ceramic part is installed, when the second piezoelectric ceramic part drives the front-end baffle unit 22 to move, since the bottom of the baffle unit 22 (which can be a protrusion) is lower than the stop block 66, it can fall into the groove (that is, the middle space 64). When the baffle unit 22 is in the second position 24 or the first position 23, it will be blocked by the stop block 66 or the comb tooth part 65 respectively. Therefore, the upper part of the baffle unit 22 is restricted to swinging left and right only in the swing space 68. Since the middle space 64 is set to the width of one needle pitch, the baffle unit 22 can swing left and right for one needle pitch in the swing space 68 due to the obstruction of the stop block 66 or the comb tooth part 65. Since the stop block 66 limits the baffle unit 22, the baffle unit 22 can only switch between the second position 24 and the first position 23, that is, swing between the stop block 66 and the comb tooth.

[0099] Reference Figure 3 , Figure 5 , Figure 6 , Figure 7 and Figure 8 The following explains how the multi-station Jacquard needle guide device switches between three stations, specifically the first station 31, the second station 24, and the first station 23:

[0100] Reference Figure 3 , Figure 5 and Figure 6 When the yarn guide needle 21 is at the first station 31: the needle position of the yarn guide needle 21 is at the first station 31. At this time, the position of the baffle unit 22 can be any position, such as the second position 24 or the first position 23, without affecting the current first station 31.

[0101] Reference Figure 3 , Figure 5 and Figure 7When the baffle unit 22 switches to the second position 24: the second drive circuit 52 controls the second piezoelectric ceramic part to switch the baffle unit 22 from the first position 23 to the second position 24. At the same time, it controls the first piezoelectric ceramic part to drive the guide needle 21 to swing towards the baffle unit 22. At this time, the baffle unit 22 will be blocked by the stop block 66. Since the torque of the baffle unit 22 is greater than that of the guide needle 21, the guide needle 21 will press tightly on the baffle unit 22 without pushing the baffle unit 22 away and causing needle deviation. So the final result is that the baffle unit 22 stops after being blocked by the stop block 66, the guide needle 21 presses on the baffle unit 22, and the baffle unit 22 stops at the second position 24 (that is, the baffle unit 22 stops at the second position 24 after being blocked by the stop block 66), which is exactly one needle pitch (i.e., the position of the second station 32). It is equivalent to the guide needle 21 being at the second station 32 at this time.

[0102] Reference Figure 3 , Figure 5 and Figure 8 When the baffle unit 22 switches to the first position 23: the drive circuit controls the first piezoelectric ceramic part to swing so that the guide needle 21 swings toward the third station 33, and at the same time controls the baffle unit 22 in front of the second piezoelectric ceramic part to swing toward the first position 23. The guide needle 21 is in the third station 33 and presses on the baffle unit 22. Since the width is preset during the initial milling of the comb tooth part 65, the position of the guide needle 21 pressing on the baffle unit 22 is exactly two needle pitches, including the thickness of the baffle unit 22. Therefore, the guide needle 21 will be in the third station 33 at this time.

[0103] Other structures are similar to those in Example 10, and will not be described in detail here.

[0104] Example 12, referring to Figure 4 , Figure 6 and Figure 7 The difference between Embodiment Twelve and Embodiment Ten is that the baffle unit 22 includes a body portion 71 and a protrusion 63. A portion of the protrusion 63 is disposed on the bottom of the body portion 71, and another portion of the protrusion 63 extends into the intermediate space 64. The tail of the body portion 71 is connected to the second piezoelectric ceramic portion of the second piezoelectric bending actuator 12, such that when the second piezoelectric ceramic portion swings, the second piezoelectric ceramic portion drives at least a portion of the body portion 71 to switch between the second position 24 and the first position 23. The other portion of the body portion 71 is used to block the guide needle 21 in the second position 24 or the first position 23 respectively. The body portion 71 is made of stainless steel, and the protrusion 63 is made of stainless steel.

[0105] Other structures are similar to those in Example 10, and will not be described in detail here.

[0106] Example 13, referring to Figure 3 , Figure 5 , Figure 6 , Figure 7 and Figure 8 The difference between Embodiment Thirteen and Embodiment One lies in the working process of the multi-station Jacquard yarn guide device: After being energized, the first piezoelectric ceramic part of the first piezoelectric bending actuator 11 drives the yarn guide needle 21 to swing left and right, causing the yarn guide needle 21 to switch positions back and forth between the first station 31, the second station 32, and the third station 33. The distance between the first station 31 and the third station 33 is two needle pitches, and the distance between the third station 33 and the second station 32 is one needle pitch. The first station 31 is the first needle position of the yarn guide needle 21, the third station 33 is the last needle position of the yarn guide needle 21, and the second station 32 is located in the middle position between the first station 31 and the third station 33. After being energized, the second piezoelectric ceramic part of the second piezoelectric bending actuator 12 drives the baffle unit 22 to switch between the second position 24 and the first position 23 in a swinging manner.

[0107] Reference Figure 8 When the baffle unit 22 restricts the corresponding yarn guide needle 21 to the first position 23, the corresponding yarn guide needle 21 is offset by two needle pitches. At this time, the yarn guide needle 21 is in the third working position 33 and stops swinging.

[0108] Reference Figure 3 , Figure 4 , Figure 7 and Figure 8 When the baffle unit 22 switches from the first position 23 to the second position 24, the baffle unit 22 is configured to apply a pushing force to the guide needle 21, causing the guide needle 21 to be restricted to stop oscillating in the second position 24. At this time, the guide needle 21 is in the second working position 32 and stops oscillating. In one embodiment, this can be manifested as the protrusion 63 being limited by the stop block 66, causing the baffle unit 22 to stop oscillating in the second position 24. The body part 71 contacts a part of the guide needle 21, and the body part 71 pushes the guide needle 21, causing the guide needle 21 to be restricted to the second position 24. More specifically, assuming that initially... When the baffle unit 22 is in the first position 23, the guide needle 21 also swings to the first position 23 and abuts against the body 71 of the baffle unit 22. Because the torque of the second piezoelectric bending actuator 12 is greater than the torque of the first piezoelectric bending actuator 11, the baffle unit 22 is driven by the second piezoelectric bending actuator 12 to swing to the second position 24. During this swing, the guide needle 21 is pushed by the baffle unit 22, so that the guide needle 21 follows the baffle unit 22 from the first position 23 to the second position 24, thereby achieving the effect of the guide needle 21 switching from the third station 33 to the second station 32.

[0109] Reference Figure 3 and Figure 5 When the guide needle 21 does not deviate, the baffle unit 22 can be in the second position 24 or the first position 23.

[0110] Other structures are similar to those in Embodiment 1, and will not be described in detail here.

[0111] Example 14, referring to Figure 1 , Figure 3 and Figure 6 The difference between this embodiment fourteen and embodiment one is that: a driver is provided, which acts on a multi-station Jacquard yarn guide device, the multi-station Jacquard yarn guide device including a plurality of first piezoelectric bending actuators 11 having yarn guide needles 21 and a plurality of second piezoelectric bending actuators 12 having baffle units 22.

[0112] Reference Figure 1 , Figure 3 and Figure 9 The driver 17 includes at least one power supply device 13 and at least one transformer module 18. The power supply device 13 outputs a first driving voltage 15 and a second driving voltage 16. The first driving voltage 15 is configured to charge the charging portion of the first piezoelectric bending actuator 11, and the second driving voltage 16 is configured to charge the charging portion of the second piezoelectric bending actuator 12. When the baffle unit 22 drives the guide needle 21 to switch from the first position 23 to the second position 24, the voltage value of the first driving voltage 15 is less than the voltage value of the second driving voltage 16.

[0113] Reference Figure 1 , Figure 3 and Figure 9 The transformer module 18 is used to increase or decrease the voltage output by the power supply device 13. The first driving voltage 15 is converted into a preset voltage value through the transformer module 18, and the second driving voltage 16 is converted into a preset voltage value through the transformer module 18.

[0114] Reference Figure 1 , Figure 3 and Figure 9 The transformer module 18 can be a Zener diode or a Zener resistor, or it can be a boost circuit.

[0115] Reference Figure 1 , Figure 3 and Figure 9 In this embodiment, four independent power supplies with different voltages are used. From the perspective of cost and installation, each driver circuit board 19 is connected in parallel to these four power supplies, that is, each Jacquard shares these four power supplies. The four power supplies correspond to the first voltage 34, the second voltage 35, the third voltage 36 and the fourth voltage 37 respectively.

[0116] When using a Zener diode or a Zener resistor, there are two modes:

[0117] Reference Figure 1 and Figure 9 The first mode involves using a single power supply, whose supply voltage is the highest among all output voltage states, to transform it into four preset, optimally lower voltage power supplies via a transformer module 18, using methods mentioned above, but not limited to those mentioned. Each driver circuit board 19 is then powered by a first voltage 34, a second voltage 35, a third voltage 36, and a fourth voltage 37. The driver circuit boards 19 are connected in parallel to the four power supplies.

[0118] Reference Figure 1 , Figure 3 and Figure 9 The second mode is to still use an independent power supply, with each driver circuit board 19 connected in parallel to the power supply. Inside the driver circuit board 19, a Zener diode or Zener resistor is used to transform one power supply into four preset optimal power supplies with lower voltages before outputting the voltage.

[0119] Reference Figure 1 , Figure 3 and Figure 9 Both modes use only one independent power supply. The advantages and disadvantages of the two modes are as follows: The first mode uses a voltage regulator diode and a voltage regulator resistor with large power and size to provide four power supplies after conversion, which is low cost. The second mode is equivalent to each driver circuit board 19 having its own voltage conversion function, which is small in size and low in power consumption. If the related circuit of a single driver circuit board 19 is damaged, it will not affect other driver circuit boards 19, which is highly reliable.

[0120] Other structures are similar to those in Embodiment 1, and will not be described in detail here.

[0121] Example 15 differs from Example 13 in that the textile machinery has at least one power mechanism for driving the multi-station Jacquard yarn guide needle device to move laterally, and the power mechanism has at least one servo motor for providing power.

[0122] Other structures are similar to those in Embodiment 1, and will not be described in detail here.

[0123] Example 16, refer to Figure 3 , Figure 5 and Figure 10The difference between Embodiment Sixteen and Embodiment One is that when the first piezoelectric bending actuator 11 is not energized, the yarn guide needle 21 is configured to be located at the first station 31 or the second station 32; when the second piezoelectric bending actuator 12 is not energized, the baffle unit 22 is configured to be located at the second position 24 or the first position 23. Specifically, when both the first piezoelectric bending actuator 11 and the second piezoelectric bending actuator 12 are not energized, the yarn guide needle 21 is configured to be located at the first station 31, and the baffle unit 22 is configured to be located at the second position 24. The advantage of this is that, under the condition that the length of the piezoelectric ceramic sheet is the same and the driving voltage is the same, the baffle unit 22 being centered can significantly improve the edge-trimming force of the baffle unit 22 at the second station 32. Combined with the aforementioned transformer module 18, under the condition that the length of the piezoelectric ceramic sheet is the same, the requirement that the edge-trimming force of the baffle unit 22 is greater than the edge-trimming force of the yarn guide needle 21 can be achieved.

[0124] Reference Figure 5 Alternatively, when the first piezoelectric bending actuator 11 is energized and the second piezoelectric bending actuator 12 is not energized, the yarn guide needle 31 is configured to be set at the second station 32, and the baffle unit 22 is configured to be set at the first position 23.

[0125] Reference Figure 7 Regarding the torque of the piezoelectric ceramic sheet: the edge-trimming force of the baffle unit 22 at the second station 32 is greater than the edge-trimming force of the guide needle 21. There are multiple methods to achieve this goal. The following is one example:

[0126] Reference Figure 5 and Figure 10 When the yarn guide needle 21 is in the first station 31, the baffle unit 22 is placed in the center; or when the yarn guide needle 21 is placed in the center, the baffle unit 22 is placed near the third station. These two positions represent two positional limits. Alternatively, the optimal position of the yarn guide needle 21 and the baffle unit 22 is between these two limits. The three-station function can be achieved at any position between these two limits. In this embodiment, all piezoelectric ceramic sheets are placed at the same horizontal level, side-by-side, in the same way as a traditional two-station Jacquard. A complete single-needle station consists of the piezoelectric ceramic sheet of the baffle unit 22 and the piezoelectric ceramic sheet of the yarn guide needle 21.

[0127] Reference Figure 5 and Figure 10 The base 60 has two limiting steps (comb teeth 65 and stop 66), which limit the yarn guide needle 21 and the baffle unit 22 respectively. The second station 32 is achieved by blocking the yarn guide needle 21 through the baffle unit 22.

[0128] Other structures are similar to those in Embodiment 1, and will not be described in detail here.

[0129] The above are merely specific embodiments of the present invention, but the design concept of the present invention is not limited thereto. Any non-substantial modifications made to the present invention using this concept shall be considered as infringing upon the protection scope of the present invention.

Claims

1. A multi-station JAKA guide device, characterized in that: The drive device comprises at least one driver, a plurality of first piezoelectric bending actuators with guide needles, and a plurality of second piezoelectric bending actuators with blocking units, the driver comprises at least one power supply device, the power supply device outputs at least one first driving voltage and at least one second driving voltage, the first driving voltage is configured to charge the charging part of the first piezoelectric bending actuator, and the second driving voltage is configured to charge the charging part of the second piezoelectric bending actuator, The first piezoelectric bending actuators and the second piezoelectric bending actuators are arranged on the same side of the base in a transverse direction, one corresponding second piezoelectric bending actuator is arranged in the transverse direction of each first piezoelectric bending actuator, the transverse direction is the swing direction of the guide needle, and one pair of blocking units is arranged in the swing direction of each guide needle, When the blocking unit switches from the first position to the second position, the blocking unit is configured to apply a pushing force to the guide needle, so that the guide needle is limited to stop swinging in the second position, When the blocking unit drives the guide needle to switch from the first position to the second position, the voltage value of the first driving voltage is less than the voltage value of the second driving voltage.

2. The multi-station JAKA guide device according to claim 1, characterized in that: The drive device further comprises at least one voltage conversion module, the voltage conversion module is used to increase or decrease the voltage output by the power supply device, the first driving voltage is converted to a preset voltage value by the voltage conversion module, and the second driving voltage is converted to a preset voltage value by the voltage conversion module.

3. A multi-station jack guide as claimed in claim 1 or 2, characterized in that: The multi-station comprises at least one first station, at least one third station, and at least one second station, the second station is arranged at the middle position between the first station and the third station, the distance between the first station and the third station is two needle pitches, the distance between the first station and the second station is one needle pitch, the distance between the second station and the third station is one needle pitch, the first position is located in the third station, and the second position is located in the second station.

4. A multi-station jack guide as claimed in claim 3, wherein: The first driving voltage includes a first voltage, the second driving voltage includes a third voltage, the first piezoelectric bending actuator includes a first piezoelectric ceramic sheet, a second piezoelectric ceramic sheet, a first substrate sandwiched between the first piezoelectric ceramic sheet and the second piezoelectric ceramic sheet, and two first conductive units arranged at the tail of the first substrate, the first driving voltage is applied to the first piezoelectric ceramic sheet or the second piezoelectric ceramic sheet through the first conductive unit, the second piezoelectric bending actuator includes a third piezoelectric ceramic sheet, a fourth piezoelectric ceramic sheet, a second substrate sandwiched between the third piezoelectric ceramic sheet and the fourth piezoelectric ceramic sheet, and two second conductive units arranged at the tail of the second substrate, the second driving voltage is applied to the third piezoelectric ceramic sheet or the fourth piezoelectric ceramic sheet through the second conductive unit, when the corresponding first piezoelectric ceramic sheet is in a charged state, the first voltage is applied to the corresponding first piezoelectric ceramic sheet through the corresponding first conductive unit, so that the first piezoelectric ceramic sheet drives the corresponding guide needle to swing towards the corresponding baffle unit, when the corresponding third piezoelectric ceramic sheet is in a charged state, the third voltage is applied to the corresponding third piezoelectric ceramic sheet through the corresponding second conductive unit, so that the third piezoelectric ceramic sheet drives the corresponding baffle unit to swing towards the corresponding guide needle.

5. The multi-station JAKA guide device according to claim 4, characterized in that: The first driving voltage further includes a second voltage, the second driving voltage further includes a fourth voltage, when the corresponding second piezoelectric ceramic sheet is in a charged state, the second voltage is applied to the corresponding second piezoelectric ceramic sheet through the corresponding first conductive unit, so that the second piezoelectric ceramic sheet drives the corresponding guide needle to swing towards the first station, when the corresponding fourth piezoelectric ceramic sheet is in a charged state, the fourth voltage is applied to the corresponding fourth piezoelectric ceramic sheet through the corresponding second conductive unit, so that the fourth piezoelectric ceramic sheet drives the corresponding baffle unit to swing towards the first position.

6. The multi-station JAKA guide of claim 1, 2, 4 or 5, wherein: When the second piezoelectric ceramic part of the second piezoelectric bending actuator is charged by the second driving voltage, the second piezoelectric ceramic part drives the baffle unit to switch between the first position and the second position, when the first piezoelectric ceramic part of the first piezoelectric bending actuator is charged by the first driving voltage, the first piezoelectric ceramic part drives the guide needle to swing.

7. The multi-station JAKA guide, as recited in claim 3, wherein: When the first piezoelectric bending actuator is not powered, the guide needle is configured to be arranged at the first station or the second station, when the second piezoelectric bending actuator is not powered, the baffle unit is configured to be arranged at the second position or the first position.

8. A driver for a multi-station JAKA guide, the multi-station JAKA guide comprising a plurality of first piezoelectric bending actuators with a guide and a plurality of second piezoelectric bending actuators with a baffle unit, characterized in that: The driver comprises at least one power supply device, which outputs a first driving voltage and a second driving voltage, the first driving voltage is configured to charge the charging part of the first piezoelectric bending actuator, and the second driving voltage is configured to charge the charging part of the second piezoelectric bending actuator, The first piezoelectric bending actuator and the second piezoelectric bending actuator are arranged on the same side of the base in a transverse arrangement, and one corresponding second piezoelectric bending actuator is arranged in the transverse direction of each first piezoelectric bending actuator, the transverse direction being the swinging direction of the guide needle, and each guide needle is arranged with a corresponding blocking piece unit in the swinging direction, When the blocking piece unit switches from the first position to the second position, the blocking piece unit is configured to apply a pushing force to the guide needle, so that the guide needle is limited to stop swinging at the second position, The voltage value of the first driving voltage is smaller than the voltage value of the second driving voltage, so that the guide needle is switched from the first position to the second position by the blocking piece unit.

9. A drive for a multi-station JAK thread guide as claimed in claim 8, characterized in that: The driver further comprises at least one voltage conversion module for increasing or decreasing the voltage output by the power supply device, the first driving voltage is converted to a preset voltage value by the voltage conversion module, and the second driving voltage is converted to a preset voltage value by the voltage conversion module.

10. A needle position control method for use in a multi-station Jakard guide needle device, characterized by: Each guide needle of the multi-station JAKA guide needle device has three different stations, which are a first station, a second station and a third station, the first station is the first needle position of the guide needle, the third station is the tail needle position of the guide needle, and the second station is located between the first station and the third station, one side of the guide needle is provided with a first piezoelectric ceramic sheet, the other side of the guide needle is provided with a second piezoelectric ceramic sheet, one side of the blocking piece unit is provided with a third piezoelectric ceramic sheet, and the other side of the blocking piece unit is provided with a fourth piezoelectric ceramic sheet, when the guide needle swings towards the first station, the first piezoelectric ceramic sheet is in a discharged state, the second piezoelectric ceramic sheet is in a charged state, the third piezoelectric ceramic sheet is in a discharged state or a charged state, when the guide needle swings towards the third station, the first piezoelectric ceramic sheet is in a charged state, the second piezoelectric ceramic sheet is in a discharged state, the third piezoelectric ceramic sheet is in a discharged state, and the fourth piezoelectric ceramic sheet is in a charged state, when the guide needle moves towards the second station, the first piezoelectric ceramic sheet is in a charged state, the second piezoelectric ceramic sheet is in a discharged state, the third piezoelectric ceramic sheet is in a charged state, and the fourth piezoelectric ceramic sheet is in a discharged state, at this time, the voltage value applied to the first piezoelectric ceramic sheet is smaller than the voltage value applied to the third piezoelectric ceramic sheet, The first piezoelectric bending actuator and the second piezoelectric bending actuator are arranged on the same side of the base in a transverse direction, and each of the first piezoelectric bending actuators is provided with a corresponding second piezoelectric bending actuator in the transverse direction, which is the swinging direction of the guide needle, and each of the guide needles is provided with a corresponding blocking piece unit in the swinging direction, When the blocking piece unit switches from the first position to the second position, the blocking piece unit is configured to apply a pushing force to the guide needle, so that the guide needle is stopped from swinging in the second position.

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