Multi-station piezoelectric Jacquard device and comb base of multi-station piezoelectric Jacquard device

Abstract

Multi-station piezoelectric jacquard device and comb base of multi-station piezoelectric jacquard device. The piezoelectric jacquard device has at least one comb base. The comb base includes a bottom base, a plurality of mounting grooves arranged horizontally on the upper surface of the bottom base, and a plurality of needle grooves arranged horizontally on the front part of the bottom base. The piezoelectric jacquard device has a plurality of guide yarn needles and a plurality of stopper units adapted to the guide yarn needles. A corresponding stopper portion is provided between every two needle grooves. When the guide yarn needle is offset by one needle pitch and is limited by a part of the stopper unit, the other part of the stopper unit is limited by the stopper portion. In the present invention, by providing a corresponding stopper portion between every two needle grooves, when the guide yarn needle is offset by one needle pitch, under the cooperation of the stopper portion and the stopper unit, the guide yarn needle is restricted at the third station, so as to realize the limitation of the guide yarn needle at three different stations respectively.

Description

Technical Field

[0001] The present invention relates to the field of piezoelectric jacquards, and in particular to a multi-station piezoelectric jacquard device and a comb base of a multi-station piezoelectric jacquard device. Background Art

[0002] In the warp knitting industry, currently, the common practice of computerized jacquard machines is to use a piezoelectric jacquard device controlled by a computer for knitting.

[0003] Chinese Utility Model Patent (Application No.: 202120019995.1, Publication No.: CN214193653U) discloses a comb base. However, in the actual use process, there are still the following deficiencies: The existing comb base is provided with needle grooves on the front part for limiting the guide yarn needles, and can only limit the guide yarn needles at two stations, but cannot limit the guide yarn needles at three different stations respectively. Summary of the Invention

[0004] The present invention provides a multi-station piezoelectric jacquard device and a comb base of a multi-station piezoelectric jacquard device, and its main purpose is to overcome the defect that the comb base is provided with needle grooves on the front part for limiting the guide yarn needles, and can only limit the guide yarn needles at two stations, but cannot limit the guide yarn needles at three different stations respectively.

[0005] To solve the above technical problems, the present invention adopts the following technical solutions:

[0006] A multi-station piezoelectric jacquard device and a comb base of a multi-station piezoelectric jacquard device. The piezoelectric jacquard device has at least one comb base. The comb base includes a bottom base, a plurality of mounting grooves arranged horizontally on the upper surface of the bottom base, and a plurality of needle grooves arranged horizontally on the front part of the bottom base. The piezoelectric jacquard device has a plurality of guide yarn needles and a plurality of blocking unit adapted to the guide yarn needles. A corresponding blocking part is arranged between every two needle grooves. When the guide yarn needle offsets a needle pitch and is limited by a part of the blocking unit, the other part of the blocking unit is limited by the blocking part.

[0007] Compared with the prior art, the beneficial effects produced by the present invention are as follows:

[0008] The structure of the present invention is simple and practical. By arranging a corresponding blocking part between every two needle grooves, when the guide yarn needle offsets a needle pitch, under the cooperation of the blocking part and the blocking unit, the guide yarn needle is limited at the third station, so as to realize the limitation of the guide yarn needle at three different stations respectively. Description of the Drawings

[0009] Figure 1 It is a structural schematic diagram of the present invention.

[0010] Figure 2 It is a schematic structural diagram of a comb base.

[0011] Figure 3 It is Figure 2 a schematic structural diagram of part B in

[0012] Figure 4 It is Figure 1 a schematic structural diagram of part A in

[0013] Figure 5 It is a schematic structural diagram of a piezoelectric jacquard device.

[0014] Figure 6 It is Figure 5 a schematic structural diagram of part C in Specific embodiments

[0015] The following describes the specific embodiments of the present invention with reference to the accompanying drawings.

[0016] Embodiment 1. Refer to Figure 2 , a multi-station piezoelectric jacquard device and a comb base of the multi-station piezoelectric jacquard device. The piezoelectric jacquard device can be applied in textile machinery. The specific textile machinery can be a warp knitting machine. The piezoelectric jacquard device has at least one comb base 100.

[0017] Refer to Figure 1 , the piezoelectric jacquard device has a plurality of guide yarn needles 15 and a plurality of shutter units 20 adapted to the guide yarn needles 15. A corresponding stop block portion 28 is provided between every two needle grooves 101. When the guide yarn needle 15 is offset by one needle pitch and is limited by a part of the shutter unit 20, the other part of the shutter unit 20 is limited by the stop block portion 28. The shutter unit 20 can limit the guide yarn needle 15 by blocking. The stop block portion 28 can limit the shutter unit 20 by blocking the other part of the shutter unit 20.

[0018] Refer to Figure 1 and Figure 2 , the comb base 100 includes a bottom base 103, a plurality of mounting grooves 102 arranged horizontally on the upper surface of the bottom base 103, and a plurality of needle grooves 101 arranged horizontally on the front part of the bottom base 103.

[0019] Refer to Figure 1 , the cross section of the stop block portion 28 is rectangular or triangular.

[0020] Refer to Figure 1The height of the block portion 28 is lower than the height of the needle groove 101, so that there is a swing space above the block portion 28, the yarn guide needle 15 swings in the swing space, a part of the baffle unit 20 swings in the swing space, and the other part of the baffle unit 20 swings between the block portion 28 and the needle groove 101.

[0021] Reference Figure 1 The stopper portion 28 is provided on the frontmost portion of the bottom base 103 .

[0022] Reference Figure 1 The stopper portion 28 and the bottom base 103 are integrally molded and cast to form an inseparable whole.

[0023] Reference Figure 1 The distance between the stopper portion 28 and the needle groove 101 on the opposite side is one needle pitch.

[0024] Example 2, refer to Figure 2 and Figure 3 The difference between the second embodiment and the first embodiment is that the mounting groove 102 has a groove body 112, and a groove is provided on the top of the groove body 112. The width of the groove gradually decreases from top to bottom, and the top of the groove forms an open space connected to the outside.

[0025] Reference Figure 2 and Figure 3 , the width of the top of the slot is greater than the width of the bottom of the slot.

[0026] Reference Figure 2 and Figure 3 The slot is Y-shaped and filled with conductive silver paste.

[0027] The other structures are similar to those in the first embodiment and will not be described in detail here.

[0028] Example 3, refer to Figure 2 and Figure 3 The difference between the third embodiment and the first embodiment is that it also includes a dovetail block 106 and a first cavity 104 arranged horizontally on the lower surface of the base 103. The first cavity 104 extends from the upper surface of the base 103 to the lower surface of the base 103 and the first cavity 104 also extends through a portion of the dovetail block 106.

[0029] Reference Figure 2, by setting the first cavity 104 to penetrate integrally from the upper surface of the bottom base 103 to the lower surface of the bottom base 103 and the first cavity 104 also penetrates a part of the dovetail block 106. On the one hand, it can reduce the overall weight of the bottom base 103. On the other hand, compared with the existing comb base 100 that requires multiple hole digging or grooving, in this application, an integral penetration method is adopted to machine the first cavity 104 on the bottom base 103 at one time, which can significantly improve the processing efficiency and achieve a two - for - one effect.

[0030] Refer to Figure 2 , the first cavity 104 is arranged on the bottom base 103 by machining or integral molding casting.

[0031] Refer to Figure 2 , the dovetail block 106 includes a first engaging portion 105 and a second engaging portion 107. The first engaging portion 105 and the second engaging portion 107 are relatively spaced apart and arranged on the lower surface of the bottom base 103, and a part of the first cavity 104 is clamped between the first engaging portion 105 and the second engaging portion 107.

[0032] Refer to Figure 2 , by setting the first cavity 104, the dovetail block 106 is divided into a relatively spaced - apart first engaging portion 105 and second engaging portion 107 by the first cavity 104. Thus, while reducing the weight of the comb base 100, the first engaging portion 105 and the second engaging portion 107 can still be well - adapted and engaged with the comb bed 111, without affecting the normal installation of the dovetail block 106 and in terms of processing.

[0033] Other structures are similar to those in the first embodiment and will not be elaborated here.

[0034] Embodiment Four, refer to Figure 2 , the difference between this Embodiment Four and Embodiment Two is that: the second cavity 110 is respectively arranged on the front part of the bottom base 103, the front part is located between the installation groove 102 and the needle groove 101, and both ends of the reinforcing rib 109 are integrally connected to the bottom base 103.

[0035] Refer to Figure 2 , by setting the second cavity 110 and at least one reinforcing rib 109 clamped between two second cavities 110. On the one hand, opening the second cavity 110 on the front part of the bottom base 103 helps to reduce the overall weight of the bottom base 103. On the other hand, setting the reinforcing rib 109 helps to strengthen the overall hardness of the front part of the bottom base 103, thus effectively reducing the influence of opening the second cavity 110 on the overall hardness of the front part of the bottom base 103 and achieving a two - for - one effect.

[0036] Refer to Figure 2 , the second cavity 110 is arranged on the bottom base 103 by machining or integral molding casting.

[0037] Referring to Figure 2 , the reinforcing rib 109 is provided on the bottom base 103 by machining or integral molding casting.

[0038] Other structures are similar to those in the second embodiment and will not be described in detail here.

[0039] Embodiment Five, referring to Figure 2 and Figure 3 , the difference between this Embodiment Five and Embodiment One is that: the installation groove 102 has a "Y"-shaped groove body 112, the top of the groove body 112 is arranged on the top of the installation groove 102 to form an open space 120 communicating with the outside, the bottom of the groove body 112 extends downward, the installation groove 102 is used to install the piezoelectric ceramic part of the piezoelectric Jacquard, and the groove body 112 is used to fill the fixing glue so that the corresponding piezoelectric ceramic part is fixed in the installation groove 102. The fixing glue is conductive silver paste.

[0040] Other structures are similar to those in the first embodiment and will not be described in detail here.

[0041] Embodiment Six, referring to Figure 1 and Figure 2 , the difference between this Embodiment Six and Embodiment One is that: it further includes a plurality of blocking parts 28 arranged in a row on the front part of the bottom base 103, the height of which is lower than that of the needle groove 101, and one matching blocking part 28 is arranged between every two needle grooves 101.

[0042] Referring to Figure 1 , the cross-section of the blocking part 28 is rectangular or triangular.

[0043] Other structures are similar to those in the first embodiment and will not be described in detail here.

[0044] Embodiment Seven, referring to Figure 2 , the difference between this Embodiment Seven and Embodiment Two is that: the bottom base 103, the installation groove 102, the needle groove 101, the dovetail block 106 and a first cavity 104 are integrally formed by casting to form an inseparable whole.

[0045] Other structures are similar to those in the second embodiment and will not be described in detail here.

[0046] Embodiment Eight, referring to Figure 2 , the difference between this Embodiment Eight and Embodiment One is that: the bottom of the installation groove 102 is detachably installed on the bottom base 103.

[0047] Other structures are similar to those in the first embodiment and will not be described in detail here.

[0048] Embodiment Nine, referring to Figure 2, the difference between the ninth embodiment and the first embodiment is that a plurality of transverse needle grooves 101 are connected to each other to form a whole, and the whole is detachably installed on the front part of the bottom base 103.

[0049] Other structures are similar to those in the first embodiment and will not be described in detail here.

[0050] Embodiment ten, referring to Figure 1 , Figure 4 , Figure 5 and Figure 6 , the difference between the tenth embodiment and the first embodiment is that the piezoelectric jacquard device includes at least one bottom base 103, a plurality of first piezoelectric jacquard elements 13 and a plurality of second piezoelectric jacquard elements 14. The first piezoelectric jacquard element 13 includes a yarn guide needle 15 and a first piezoelectric ceramic part 16, and the first piezoelectric ceramic part 16 is used to drive the yarn guide needle 15 to swing. The yarn guide needle 15 is arranged on the front part of the first piezoelectric ceramic part 16. The bottom base 103 is made of aluminum alloy material, magnesium alloy material, aluminum-magnesium alloy material, carbon fiber material or resin material.

[0051] Referring to Figure 1 , Figure 4 , Figure 5 and Figure 6 , the first piezoelectric jacquard elements 13 and the second piezoelectric jacquard elements 14 are both arranged horizontally on the same side of the bottom base 103 and form a single-layer structure. A corresponding second piezoelectric jacquard element 14 is arranged in the horizontal direction of each first piezoelectric jacquard element 13. This horizontal direction is the swinging direction of the yarn guide needle 15, and a corresponding stop unit 20 is arranged in the swinging direction of each yarn guide needle 15. The stop unit 20 is made of stainless steel material.

[0052] Referring to Figure 1 , Figure 4 , Figure 5 and Figure 6 , the yarn guide needle of the second piezoelectric jacquard element 14 is replaced with a stop unit 20, and each stop unit 20 is adapted to an adjacent yarn guide needle 15. The second piezoelectric jacquard element 14 is used to actuate the stop unit 20 to switch between a first position and a second position.

[0053] Referring to Figure 1 , Figure 4 [[ID=4[3]], Figure 5 and Figure 6 , in this embodiment, the specific second piezoelectric jacquard element 14 includes a second piezoelectric ceramic part 17 and a stop unit 20. The stop unit 20 is arranged on the front part of the second piezoelectric ceramic part 17, and the second piezoelectric ceramic part 17 is used to drive the corresponding stop unit 20 to swing independently.

[0054] Referring to Figure 1 ,Figure 4 , Figure 5 and Figure 6 , multiple mounting grooves 12 arranged in sequence are provided on the bottom base 103, the first piezoelectric ceramic part 16 is installed in the corresponding mounting groove 12, and the second piezoelectric ceramic part 17 is installed in the corresponding mounting groove 12. The number of the mounting grooves 12 can be the sum of the total numbers of the first piezoelectric jacquard elements 13 and the second piezoelectric jacquard elements 14.

[0055] Refer to Figure 1 , Figure 4 , Figure 5 and Figure 6 , when the yarn guide needle 15 is not deflected, the corresponding stop unit 20 does not limit the yarn guide needle 15. When the stop unit 20 restricts the corresponding yarn guide needle 15 to the first position, the corresponding yarn guide needle 15 is deflected by one needle pitch. When the stop unit 20 restricts the corresponding yarn guide needle 15 to the second position, the corresponding yarn guide needle 15 is deflected by two needle pitches.

[0056] Refer to Figure 1 , Figure 4 , Figure 5 and Figure 6 , the torque generated when the second piezoelectric jacquard element 14 swings is greater than the torque generated when the first piezoelectric jacquard element 13 swings.

[0057] Refer to Figure 1 , Figure 4 , Figure 5 and Figure 6 , when the yarn guide needle 15 is not deflected, the corresponding stop unit 20 is at least one needle pitch away from the corresponding yarn guide needle 15.

[0058] Refer to Figure 1 , Figure 4 , Figure 5 and Figure 6 , the yarn guide needle 15 has a first working position 21, a second working position 22 and a third working position 23. When the yarn guide needle 15 is deflected by at least one needle pitch and the stop unit 20 is in the first position, the stop unit 20 limits the yarn guide needle 15 to the second working position 22. The second working position 22 is located between the first working position 21 and the third working position 23. The distance between the first working position 21 and the second working position 22 is one needle pitch, the distance between the third working position 23 and the second working position 22 is one needle pitch, and the distance between the first working position 21 and the third working position 23 is two needle pitches. When the yarn guide needle 15 is not deflected, the yarn guide needle 15 is located at the first working position 21. When the yarn guide needle 15 is deflected by one needle pitch, the yarn guide needle 15 is located at the second working position 22. When the yarn guide needle 15 is deflected by two needle pitches, the yarn guide needle 15 is located at the third working position 23.

[0059] Refer to Figure 1 , Figure 4 , Figure 5 andFigure 6 On the foremost part of the bottom base 103, a plurality of stoppers 24 are arranged horizontally. Each flap unit 20 is provided with two stoppers 24. These stoppers 24 limit the displacement of a part of the flap unit 20 along the moving direction. These stoppers 24 are arranged transversely to the moving direction on both sides of the swinging space 30 of the flap unit 20. Each flap unit 20 has at least one protrusion 25. The protrusion 25 protrudes transversely to the moving direction and extends into the intermediate space 26 between the two stoppers 24 assigned to the flap unit 20. The width of the intermediate space 26 is one needle pitch.

[0060] Refer to Figure 1 , Figure 4 , Figure 5 and Figure 6 , the core function of the three-station piezoelectric Jacquard device is: in addition to the guide yarn needle 15 swinging left and right, it also needs to be able to accurately dock at the second station 22, and each guide yarn needle 15 swings independently. At the same time, each different guide yarn needle 15 can be in different stations, rather than entering the same station at the same time.

[0061] Refer to Figure 1 , Figure 4 , Figure 5 and Figure 6 , by setting the torque of the second piezoelectric Jacquard element 14 to be greater than the torque of the first piezoelectric Jacquard element 13, the flap unit 20 can stably and effectively push the corresponding guide yarn needle 15 to move from the second position towards the first position, that is, from the third station 23 to the second station 22, thereby stably realizing the limit of the guide yarn needle 15 by the flap unit 20, enabling the flap unit 20 to stably switch between the first position and the second position, and also enabling the guide yarn needle 15 to stably switch between the first position and the second position.

[0062] Refer to Figure 1 , Figure 4 , Figure 5 and Figure 6 , when the starting moving position of the guide yarn needle 15 is at the second position, the flap unit 20 pushes the guide yarn needle 15 to move from the second position to the first position, thereby achieving the effect of switching the guide yarn needle 15 from the third station 23 to the second station 22.

[0063] Refer to Figure 1 , Figure 4 , Figure 5 and Figure 6, by setting the second piezoelectric jacquard element 14 to drive the corresponding flap unit 20 in a swinging manner, on the one hand, each flap unit 20 can be independently switched between the first position and the second position, so that each corresponding yarn guide needle 15 can separately enter the second working station 22 or the third working station 23, thus effectively meeting the technical requirements of the three working stations. On the other hand, the second piezoelectric jacquard element 14 has a simple structure and is easy to control, reducing the overall technical difficulty of the piezoelectric jacquard device, improving the stability of the flap unit 20 to block the yarn guide needle 15 after switching between the first position and the second position, achieving a two - birds - with - one - stone effect.

[0064] Refer to Figure 1 , Figure 4 , Figure 5 and Figure 6 , in this embodiment, the torque of the specific flap unit 20 is greater than the torque of the first piezoelectric jacquard element 13. By setting the torque of the flap unit 20 to be greater than the torque of the first piezoelectric jacquard element 13, on the one hand, the thrust provided by the flap unit 20 is greater than the force for the yarn guide needle 15 to swing in the first piezoelectric jacquard element 13, thus effectively supporting the yarn guide needle 15 and making the yarn guide needle 15 stop swinging after being blocked by the flap unit 20, and further effectively restricting the switching of the yarn guide needle 15 between the second working station 22 and the third working station 23. On the other hand, after the yarn guide needle 15 is blocked by the flap unit 20, it will not break through the block of the flap unit 20, thus preventing the occurrence of needle deviation, achieving a two - birds - with - one - stone effect.

[0065] Refer to Figure 1 , Figure 4 , Figure 5 and Figure 6 , taking 8 second piezoelectric jacquard elements 14 and 8 first piezoelectric jacquard elements 13 as an example, the arrangement order is second piezoelectric jacquard element 14 / first piezoelectric jacquard element 13 / second piezoelectric jacquard element 14 / first piezoelectric jacquard element 13 / second piezoelectric jacquard element 14 / first piezoelectric jacquard element 13 / second piezoelectric jacquard element 14 / first piezoelectric jacquard element 13 / second piezoelectric jacquard element 14 / first piezoelectric jacquard element 13 / second piezoelectric jacquard element 14 / first piezoelectric jacquard element 13 / second piezoelectric jacquard element 14 / first piezoelectric jacquard element 13 / second piezoelectric jacquard element 14 / first piezoelectric jacquard element 13, arranged horizontally to form a single - layer structure.

[0066] Refer to Figure 1 , Figure 4 , Figure 5 and Figure 6, by arranging the first piezoelectric jacquard element 13 and the second piezoelectric jacquard element 14 horizontally on the same side of the bottom base 103 to form a single-layer structure, it is possible to achieve the effect of the guide needle 15 stopping at three different work positions with only a single-layer structure of piezoelectric jacquard elements, making the thickness of the piezoelectric jacquard device with three work positions the same as that of the original two-work-position piezoelectric jacquard device.

[0067] Refer to Figure 1 , Figure 4 , Figure 5 and Figure 6 , in this embodiment, the total number of the specific guide needles 15, the total number of the first piezoelectric jacquard elements 13, the total number of the second piezoelectric jacquard elements 14, and the total number of the stop units 20 are the same, and they are in one-to-one correspondence and mutually adapted. When there are 8 first piezoelectric jacquard elements 13 on a bottom base 103, the corresponding guide needles 15 are 8 needles, the second piezoelectric jacquard elements 14 are 8, and the stop units 20 are 8. When there are 16 first piezoelectric jacquard elements 13 on a bottom base 103, the corresponding guide needles 15 are 16 needles, the second piezoelectric jacquard elements 14 are 16, and the stop units 20 are 16. Of course, more guide needles 15 can be set, including but not limited to 16 needles or 8 needles, and more guide needles 15 can be inferred accordingly and will not be elaborated here.

[0068] Other structures are similar to those in Embodiment 1 and will not be elaborated here.

[0069] Embodiment 11, refer to Figure 1 , Figure 4 , Figure 5 and Figure 6 , the difference between this Embodiment 11 and Embodiment 10 is that: the convex portion 25 extends from top to bottom into the intermediate space 26. Each stop 24 is held at the foremost part of the bottom base 103 at at least two different heights.

[0070] Refer to Figure 1 , Figure 4 , Figure 5 and Figure 6 , the intermediate space 26 is configured as a groove 27, and the groove 27 is arranged at the foremost part of the bottom base 103.

[0071] Refer to Figure 1 , Figure 4 , Figure 5 and Figure 6 , the stop 24 includes a needle groove 31 and a stop block portion 28 arranged on one side of the needle groove 31. The stop block portion 28 is adapted to an adjacent stop unit 20. Among these stops 24, the intermediate space 26 is sandwiched between a stop block portion 28 and another adjacent needle groove 31.

[0072] Refer toFigure 1 , Figure 4 , Figure 5 and Figure 6 , a cavity is arranged between two needle grooves 31, a part of the yarn guide needle 15 is arranged in the cavity, the cavity is the swing space 30 for a part of the yarn guide needle 15, the stopper portion 28 is located below the swing space 30, the middle space 26 is located below the swing space 30 and communicates with the swing space 30, and the width of the cavity is two needle pitches. The head of the yarn guide needle 15 extends outside the cavity, and a yarn guide hole 32 is arranged on the head of the yarn guide needle 15.

[0073] Referring to Figure 1 , Figure 4 , Figure 5 and Figure 6 , when the flap unit 20 swings to the opposite side of the needle groove 31 (the opposite side is the side far from the needle groove 31), the flap unit 20 is blocked by another adjacent needle groove 31, so that the flap unit 20 stops swinging at the second position. At this time, the flap unit 20 is used to block the yarn guide needle 15 from stopping swinging at the third working position 23.

[0074] Referring to Figure 1 , Figure 4 , Figure 5 and Figure 6 , by arranging the needle groove 31 and the stopper portion 28, the needle groove 31 is used to block the flap unit 20 so that the flap unit 20 stops at the second position after swinging, so as to accurately achieve the effect of switching the flap unit 20 to the second position. The stopper portion 28 is used to block the protrusion 25 of the flap unit 20, so that the flap unit 20 stops swinging at the first position after swinging, so as to achieve the effect of switching the flap unit 20 from the first position to the second position.

[0075] Referring to Figure 1 , Figure 4 , Figure 5 and Figure 6 , when the flap unit 20 is restricted to stop swinging at the first position due to the stopper portion 28, the flap unit 20 is used to limit the corresponding yarn guide needle 15 to stop swinging at the second working position 22. When the flap unit 20 is restricted to stop swinging at the second position due to the needle groove, or the flap unit 20 is used to block the yarn guide needle 15 from stopping swinging at the third working position 23, so that the yarn guide needle 15 can stop swinging at three different working positions after being blocked by the corresponding flap unit 20, thus achieving the effect that the yarn guide needle 15 can switch back and forth among the three working positions.

[0076] Referring to Figure 1 , Figure 4 , Figure 5 and Figure 6 , in this embodiment, the other side of the specific needle groove 31 is used to limit the adjacent flap unit 20 to the second position.

[0077] In this embodiment, the working principle of the piezoelectric jacquard device to achieve three working positions is as follows:

[0078] In the existing piezoelectric jacquard device with two working positions, the swing amplitude is one groove needle position. However, for the piezoelectric jacquard device with three working positions, due to the addition of a working position state, its swing amplitude is two groove needle positions (two needle pitches), that is: in the absence of crosswise movement, its swing amplitude is two groove needle positions (two needle pitches).

[0079] Refer to Figure 1 、 Figure 4 、 Figure 5 and Figure 6 , the piezoelectric jacquard device with three working positions means that in addition to swinging left and right, the yarn guide needle 15 can accurately stop at the middle position (i.e., the position of the second working position 22), and the corresponding position of the stop piece unit 20 is the first position.

[0080] Refer to Figure 1 、 Figure 4 、 Figure 5 and Figure 6 , the piezoelectric jacquard device with two working positions can only swing left and right, and the position where it stops is fixed and accurate. The reason for being fixed and accurate is that the needle grooves 31 of the bottom base 103 are grooved according to the calculated data. When the yarn guide needle 15 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. After being charged, the piezoelectric ceramic sheet will generate a swinging torque. A complete piezoelectric ceramic sheet that can swing left and right is composed of two single-piece piezoelectric ceramic sheets bonded on a glass fiber sheet. Each single-piece piezoelectric ceramic sheet is responsible for one swinging direction, that is, when one is charged and the other is discharged, a correct swinging torque will be generated, and the piezoelectric ceramic sheet will swing left or right. This is the basic swinging principle of the piezoelectric ceramic sheet.

[0081] Refer to Figure 1 、 Figure 4 、 Figure 5 and Figure 6 , as long as a large enough torque is generated, the yarn guide needle 15 will be tightly pressed against the wall surface on one side of the needle groove 31 under the drive of the first piezoelectric ceramic part 16, and will not be deflected by the yarn, and can accurately pass through the center of two groove needles.

[0082] Refer to Figure 1 、 Figure 4 、 Figure 5 and [[ID= , wherein, the width of the groove 27 is the width of one needle pitch, the width of the swinging space 30 is the width of two needle pitches, and there is a stop block part 28 between the groove 27 and the swinging space 30. The outer shape of the stop block part 28 can be rectangular or triangular.

[0083] Refer to ​ 、​ , ​ and ​ , the first piezoelectric ceramic part 16 drives the yarn guide needle 15 to swing in the swing space 30. The position of its yarn guide needle 15 is higher than that of the stopper part 28, so it is not affected by the stopper part 28. Since the width of the swing space 30 is the width of two needle pitches, the first piezoelectric ceramic part 16 drives the yarn guide needle 15 to be able to swing two needle pitch positions in the swing space 30.

[0084] Refer to ​ , ​ , ​ and ​ , after the second piezoelectric ceramic part 17 is set, when the second piezoelectric ceramic part 17 drives the front-end baffle unit 20 to move, since the bottom of the baffle unit 20 (which can be a convex part correspondingly) is lower than that of the stopper part 28, it can fall into the groove 27 (that is, the middle space 26). When the baffle unit 20 is in the first position or the second position, it will be blocked by the stopper part 28 or the needle groove 31 respectively. So the upper part of the baffle unit 20 is restricted to only swing left and right in the swing space 30. Also, since the middle space 26 is set to the width of one needle pitch, the baffle unit 20 can swing left and right one needle pitch position in the swing space 30 due to the blocking of the stopper part 28 or the needle groove 31. Since the stopper part 28 limits the baffle unit 20, the baffle unit 20 can only switch between the first position and the second position, that is, swing between the stopper part 28 and the needle groove.

[0085] The following will explain one by one how the three-station piezoelectric Jacquard device works and switches among the three stations, and will be described respectively according to the first station, the first position, and the second position:

[0086] Refer to ​ , ​ , ​ and ​ , when the yarn guide needle 15 is in the first station 21: the needle position of the yarn guide needle 15 is in the first station 2l. At this time, the position of the baffle unit 20 can be at any position, which can be the first position or the second position, and has no influence on the current first station 21.

[0087] Refer to ​ , ​ , ​ and ​, when the shutter unit 20 switches to the first position: The second drive circuit controls the second piezoelectric ceramic part 17 to cause the shutter unit 20 to switch from the second position to the first position. At the same time, it controls the first piezoelectric ceramic part 16 to drive the yarn guide needle 15 to swing towards the direction of the shutter unit 20. At this time, the shutter unit 20 will be blocked by the stopper portion 28. Also, since the torque of the shutter unit 20 is larger than that of the yarn guide needle 15, at this time, the yarn guide needle 15 will tightly press on the shutter unit 20 without pushing the shutter unit 20 away and causing needle deviation. Therefore, the final result is that after the shutter unit 20 is blocked by the stopper portion 28 and stops, the yarn guide needle 15 presses on the shutter unit 20. When the shutter unit 20 docks at the first position (that is, when the shutter unit 20 stops at the first position after being blocked by the stopper portion 28), it is exactly at the position of one needle pitch (i.e., the position of the second working station 22), which is equivalent to the yarn guide needle 15 being at the second working station 22 at this time.

[0088] Referring to ​ , ​ , ​ and ​ , when the shutter unit 20 switches to the second position: The drive circuit controls the first piezoelectric ceramic part 16 to swing so that the yarn guide needle 15 swings towards the direction of the third working station 23. At the same time, it controls the shutter unit 20 in front of the second piezoelectric ceramic part 17 to swing towards the second position. The yarn guide needle 15 is at the third working station 23, and the yarn guide needle 15 presses on the shutter unit 20. Also, since the width is preset in the initial process of milling the needle groove 31, in the case of including the thickness of the shutter unit 20, the position where the yarn guide needle 15 presses on the shutter unit 20 is exactly two needle pitches. Therefore, at this time, the yarn guide needle 15 will be at the third working station 23.

[0089] Other structures are similar to those in Embodiment Ten and will not be described in detail here.

[0090] Embodiment Twelve, referring to ​ , ​ , ​ and ​ , the difference between this Embodiment Twelve and Embodiment Ten is that: The shutter unit 20 includes a main body portion 40 and a convex portion 25. A part of the convex portion 25 is arranged on the bottom of the main body portion 40, and another part of the convex portion 25 extends into the intermediate space 26. The tail of the main body portion 40 is connected to the second piezoelectric ceramic part 17 of the second piezoelectric jacquard element 14, so that when the second piezoelectric ceramic part 17 swings, the second piezoelectric ceramic part 17 drives at least a part of the main body portion 40 to switch between the first position and the second position. Another part of the main body portion 40 is used to block the yarn guide needle 15 at the first position or the second position respectively. The main body portion 40 is made of stainless steel material, and the convex portion 25 is made of stainless steel material.

[0091] Other structures are similar to those in Embodiment Ten and will not be described in detail here.

[0092] Example XIII. Referring to ​ 、 ​ 、 ​ and ​ ,the difference between this Example XIII and Example X is that: the piezoelectric Jacquard device further includes at least one Jacquard driver 41 provided at the rear part of the bottom base 103. When the piezoelectric Jacquard device is a wireless Jacquard, the Jacquard driver 41 includes a conductive connector 42 and a driving circuit board 43 integrated with the connector 42. The output end of the driving circuit board 43 is electrically connected to the input end of the connector 42. The power connection end parts of the first piezoelectric Jacquard element 13 and the second piezoelectric Jacquard element 14 are respectively provided at the output end part of the connector 42. The Jacquard driver 41 is used to drive the first piezoelectric Jacquard element 13 and the second piezoelectric Jacquard element 14 to swing independently.

[0093] Referring to ​ 、 ​ 、 ​ and ​ ,the first piezoelectric Jacquard element 13 includes at least one deformable first substrate 46, at least one comb holding end provided at the front part of the first substrate 46, a first piezoelectric ceramic part 16 wrapped on both sides of the first substrate 46, and two first power connection ends 47 provided on both sides of the tail of the first substrate 46. The first substrate 46 can be a fiberglass sheet. The yarn guide needle 15 is provided at the front part of the comb holding end.

[0094] Referring to ​ 、 ​ 、 ​ and ​ ,the second piezoelectric Jacquard element 14 includes at least one deformable second substrate 44, a second piezoelectric ceramic part 17 wrapped on both sides of the second substrate 44, and two second power connection ends 45 provided on both sides of the tail of the second substrate 44. The second substrate 44 can be a fiberglass sheet. The stop unit 20 is provided at the front part of the second substrate 44. The stop unit 20 can be in an inverted L shape, an inverted "convex" shape, or an inverted triangle shape. Both the first power connection end 47 and the second power connection end 45 can be conductive copper sheets.

[0095] Referring to ​ 、 ​ 、 ​ and ​ ,in this example, specifically, the connector 42 is electrically connected to the first piezoelectric ceramic part 16 through the first power connection end 47, and the connector 42 is electrically connected to the second piezoelectric ceramic sheet through the second power connection end.

[0096] Other structures are similar to those in Example X and will not be elaborated here.

[0097] Example XIV. Referring to​ , ​ , ​ and ​ , the difference between the fourteenth embodiment and the tenth embodiment is that: the piezoelectric jacquard device further includes at least one jacquard driver disposed on the rear portion of the bottom base. When the piezoelectric jacquard device is a wired jacquard, the jacquard driver includes a conductive connector, at least one cable, and a driving circuit board. The driving circuit board is electrically connected to the input end of the connector through the cable. The power connection end portions of the first piezoelectric jacquard element and the second piezoelectric jacquard element are respectively disposed on the output end portion of the connector. The jacquard driver is used to drive the first piezoelectric jacquard element and the second piezoelectric jacquard element to swing independently.

[0098] Other structures are similar to those of the tenth embodiment and will not be described in detail here.

[0099] The fifteenth embodiment, referring to ​ , the difference between the fifteenth embodiment and the tenth embodiment is that: when the piezoelectric jacquard device is a wireless jacquard, the jacquard driver 41 includes a connector 42, at least one driving circuit board 43 having a first driving circuit, a plurality of first power connection ports 48 disposed on the driving circuit board 43, and a plurality of second power connection ports 49 disposed on the driving circuit board 43. The output end of the driving circuit board 43 is electrically connected to the first power connection end 47 of the first piezoelectric jacquard element 13 in a coupling manner. The first power connection port 48 is used to transmit electrical signals. The output end of the second driving circuit board is electrically connected to the second power connection end of the second piezoelectric ceramic part 17 in a coupling manner. The second power connection port 49 is used to transmit electrical signals.

[0100] Referring to ​ , the driving circuit board 43 includes a printed circuit board, a first driving circuit disposed on the printed circuit board, and a second driving circuit disposed on the printed circuit board. The first driving circuit is used to drive the first piezoelectric ceramic part 16 of the first piezoelectric jacquard element 13 to swing. The first power connection port 48 can be respectively disposed on the right side of the printed circuit board.

[0101] Referring to ​ , the second driving circuit is used to drive the second piezoelectric ceramic part 17 of the second piezoelectric jacquard element 14 to swing. The second power connection port 49 can be disposed on the left side of the second printed circuit board.

[0102] Referring to ​ , in this embodiment, a connector 42 can be disposed on the front portion of the printed circuit board, so that the output end of the driving circuit board 43 and the first power connection end 47 of the first piezoelectric jacquard element ۱۳ are electrically connected in a pluggable manner through the connector 42.

[0103] Referring to ​, in this embodiment, a connector 42 can be provided on the front part of the printed circuit board, so that the output end of the second drive circuit board is electrically connected to the second power connection end of the second piezoelectric ceramic part 17 in a pluggable manner through the connector 42.

[0104] Refer to ​ , the second power connection port 49 and the first power connection port 48 are respectively arranged on the left and right sides of the printed circuit board to achieve the effect of taking power from the side of the drive circuit board 43.

[0105] Among them, for the circuit structure of the first drive circuit, reference can be made to the Chinese utility model patent (application number: 202123378011.8, publication number: CN218124570U), or other piezoelectric ceramic drive circuits in the art. For the second drive circuit, reference can be made to the Chinese utility model patent (application number: 202121926084.3, publication number: CN217486404U), or other piezoelectric ceramic drive circuits in the art.

[0106] Refer to ​ , in another embodiment, the second power connection port 49 and the first power connection port 48 can be replaced with multiple conductive spring pins. The spring pins are arranged below the drive circuit board and are electrically connected to the drive circuit board, so as to achieve the effect of taking power from the bottom. The spring pins can also be called thimble pins.

[0107] Other structures are similar to those in Embodiment Ten and will not be elaborated here.

[0108] Embodiment Sixteen, refer to ​ 、 ​ 、 ​ and ​ , the difference between this Embodiment Sixteen and Embodiment Ten lies in: the working process of this piezoelectric Jacquard device: the first piezoelectric ceramic part 16 of the first piezoelectric Jacquard element 13 drives the yarn guide needle 15 to swing left and right after being powered on, so that the yarn guide needle 15 reciprocates between the first working position 21, the second working position 22 and the third working position 23. The distance between the first working position 21 and the third working position 23 is two needle pitches, the distance between the third working position 23 and the second working position 22 is one needle pitch. The first working position 21 is the initial needle position of the yarn guide needle 15, the third working position 23 is the tail needle position of the Jacquard needle, and the second working position 22 is located at the middle position between the first working position 21 and the third working position 23. The second piezoelectric ceramic part 17 of the second piezoelectric Jacquard element 14 drives the flapper unit 20 to swing between the first position and the second position after being powered on.

[0109] Refer to ​ 、 ​ 、 ​ and ​, when the stopper unit 20 restricts the corresponding yarn guide needle 15 to the second position, the corresponding yarn guide needle 15 is offset by two needle pitches, and at this time, the yarn guide needle 15 stops swinging at the third working position 23.

[0110] Refer to ​ , ​ , ​ and ​ , when the stopper unit 20 switches from the second position to the first position, the stopper unit 20 is configured to apply a thrust to the yarn guide needle 15, so that the yarn guide needle 15 is restricted to stop swinging at the first position. At this time, the yarn guide needle 15 stops swinging at the second working position 22. In one embodiment, it can be manifested that the protrusion 25 is limited by the stopper portion 28, so that the stopper unit 20 stops swinging at the first position. The main body portion 40 contacts a part of the yarn guide needle 15, and the main body portion 40 pushes the yarn guide needle 15, so that the yarn guide needle 15 is limited to the first position. More specifically, for example, assume that initially, the stopper unit 20 is in the second position, and the yarn guide needle 15 also swings to the second position and abuts against the main body portion 40 of the stopper unit 20. Because the torque of the second piezoelectric jacquard element 14 is greater than the torque of the first piezoelectric jacquard element 13, the second piezoelectric jacquard element 14 drives the stopper unit 20 to swing to the first position. During this swinging process, the yarn guide needle 15 is simultaneously pushed by the stopper unit 20, so that the yarn guide needle 15 follows the stopper unit 20 to switch from the second position to the first position together, thereby realizing the effect of switching the yarn guide needle 15 from the third working position 23 to the second working position 22.

[0111] Refer to ​ , ​ , ​ and ​ , when the yarn guide needle 15 is not offset, the yarn guide needle 15 is at the first working position 21. At this time, the stopper unit 20 can be in the first position or the second position.

[0112] Other structures are similar to those in Embodiment Ten and will not be elaborated here.

[0113] Embodiment Seventeen. Refer to ​, the difference between the seventeenth embodiment and the tenth embodiment is that: the piezoelectric jacquard device further includes at least one jacquard driver 41, a part of the jacquard driver 41 is replaceably installed on a part of the bottom base 103, the jacquard driver 41 has a connector 42 and at least one driving circuit board 43 electrically connected to the connector 42. The front part of the connector 42 has a conductive plugging part, a part of the plugging part is replaceably installed on the first power connection end 47 of the first piezoelectric jacquard element 13, and another part of the plugging part is replaceably installed on the second power connection end 45 of the second piezoelectric jacquard element 14, so that the first piezoelectric jacquard element 13 is electrically connected to the driving circuit board 43 through the connector 42, and the second piezoelectric jacquard element 14 is electrically connected to the driving circuit board 43 through the second connector 42.

[0114] Other structures are similar to those in the tenth embodiment and will not be described in detail here.

[0115] The fiberglass sheet is also called fiberglass steel sheet. The fiberglass sheet is a product made by pre-impregnating fiberglass yarn into styrene-based polyester resin and then heating, curing and pultruding. Or it can also be called fiberglass sheet or fiberglass sheet board.

[0116] The above is only the specific implementation manner of the present invention, but the design concept of the present invention is not limited thereto. Any non-substantial modification made to the present invention using this concept shall fall within the scope of infringement of the protection scope of the present invention.

Claims

1. A comb base for a multi-station piezoelectric jacquard device, comprising a bottom base, a plurality of mounting grooves arranged horizontally on the upper surface of the bottom base, and a plurality of needle grooves arranged horizontally on the front part of the bottom base, characterized in that: The piezoelectric jacquard device has a plurality of yarn guide needles and a plurality of stopper units adapted to the yarn guide needles. A corresponding stopper portion is provided between every two needle grooves. The stopper portion is arranged on the foremost part of the bottom base. The distance between the stopper portion and the needle groove on the opposite side is one needle pitch. The height of the stopper portion is lower than that of the needle groove, so that there is a swinging space above the stopper portion. The yarn guide needles swing within the swinging space, a part of the stopper unit swings within the swinging space, and another part of the stopper unit swings between the stopper portion and the needle groove. A plurality of stoppers are arranged horizontally on the foremost part of the bottom base. Each stopper unit is provided with two of the stoppers. These stoppers limit the displacement of a part of the stopper unit along the moving direction. These stoppers are arranged transversely to the moving direction on both sides of the swinging space of the stopper unit. When the yarn guide needle is offset by one needle pitch and is limited by a part of the stopper unit, another part of the stopper unit is limited by the stopper portion.

2. The comb base for a multi-station piezoelectric jacquard device according to claim 1, characterized in that: The cross section of the stopper portion is rectangular or triangular.

3. The comb base for a multi-station piezoelectric jacquard device according to claim 1, characterized in that: The stopper portion and the bottom base are integrally formed by casting to form an inseparable whole.

4. The comb base for a multi-station piezoelectric jacquard device according to claim 1, characterized in that: The mounting groove has a groove body. There is an opening on the top of the groove body. The width of the top of the opening is greater than that of the bottom of the opening. The top of the opening forms an open space communicating with the outside.

5. The comb base for a multi-station piezoelectric jacquard device according to claim 4, characterized in that: The shape of the opening is "Y".

6. The comb base for a multi-station piezoelectric jacquard device according to claim 1, characterized in that: It further includes a dovetail block horizontally arranged on the lower surface of the bottom base and a first cavity. The first cavity penetrates integrally from the upper surface of the bottom base to the lower surface of the bottom base and the first cavity also penetrates a part of the dovetail block.

7. A multi-station piezoelectric jacquard device, characterized in that: The multi-station piezoelectric jacquard device has at least one comb base, and the comb base is the comb base according to any one of claims 1-6.

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