Piezoelectric jacquard comb stably mounted on a base

Abstract

A piezoelectric Jacquard comb with stable base mounting includes: a Jacquard base and a positioning dovetail. The positioning dovetail is disposed on the lower surface of the Jacquard base and includes a first protrusion, a second protrusion, a third protrusion, a first slot, and a second slot. In this invention, the second protrusion in the middle of the positioning dovetail serves as the main support, and together with the first and third protrusions on the left and right sides, forms a three-section integrated support structure. The overall bending and torsional strength is significantly improved. When the comb swings back and forth at high speed, the three-section structure is not easily twisted or deformed. The three protrusions simultaneously abut against the slots in the comb, making the Jacquard base more firmly mounted on the comb.

Description

Technical Field

[0001] This invention relates to the field of piezoelectric Jacquard, and in particular to a piezoelectric Jacquard comb that is stably mounted on a base. Background Technology

[0002] The Jacquard base of a piezoelectric Jacquard relies on a positioning dovetail assembly on the guide bar. For a 32-gauge wide Jacquard base, if only a single weight-reducing groove is opened in the middle of the dovetail, the dovetail will be divided into two protrusions on the left and right sides, with no connecting support in the middle, resulting in insufficient overall structural stability. When the guide bar swings at high speed, the instability of the two protrusions is insufficient, making them prone to deformation, causing the guide needles to shift and resulting in misaligned patterns in the fabric. If the dovetail is not slotted and a solid structure is used, although the structural strength meets the requirements, the weight of the jacquard base is too large due to the setting of multiple jacquard needles, which increases the motion load and limits the running speed of the warp knitting machine. Summary of the Invention

[0003] This invention provides a piezoelectric Jacquard comb that is stably mounted on a base to solve the problems mentioned in the background art.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: A piezoelectric Jacquard comb with stable mounting on a base includes: a Jacquard base (7) and a positioning dovetail (8), wherein the positioning dovetail (8) is disposed on the lower surface of the Jacquard base (7). The positioning dovetail (8) includes a first protrusion (4), a second protrusion (5), a third protrusion (6), a first slot (9), and a second slot (10). The second protrusion (5) is located on the central axis of the Jacquard base (7), the first slot (9) is located on the left side of the second protrusion (5), and the first protrusion (4) is located on the left side of the first slot (9). The second slot (10) is located on the right side of the second protrusion (5), and the third protrusion (6) is located on the right side of the second slot (10). The first protrusion (4), the second protrusion (5), the third protrusion (6), the first slot (9), and the second slot (10) are arranged on the same horizontal line from left to right.

[0005] Furthermore, the first protrusion (4) extends toward the front of the Jacquard base (7), the second protrusion (5) extends toward the front of the Jacquard base (7), and the third protrusion (6) extends toward the front of the Jacquard base (7).

[0006] Furthermore, the first slot (9) and the second slot (10) are symmetrically arranged on the left and right sides of the second protrusion (5) with the second protrusion (5) as the center.

[0007] Furthermore, the first protrusion (4) and the third protrusion (6) are symmetrically arranged on the left and right sides of the second protrusion (5) with the second protrusion (5) as the center. The left edge of the first protrusion (4) is flush with the left edge of the Jacquard base (7), and the right edge of the third protrusion (6) is flush with the right edge of the Jacquard base (7).

[0008] Furthermore, the opening direction of the first slot (9) is towards the front side of the Jacquard base (7), and the opening direction of the second slot (10) is towards the front side of the Jacquard base (7).

[0009] Furthermore, a weight-reducing groove is provided in the front section of the Jacquard base (7). The weight-reducing groove extends from the upper surface of the Jacquard base (7) to the lower surface of the Jacquard base (7). A weight-reducing groove (12) is provided on the front side of the first slot (9), and another weight-reducing groove (13) is provided on the front side of the second slot (10).

[0010] Furthermore, the rear part of the Jacquard base (7) is provided with an internal thread assembly hole (11), which extends from the upper surface of the Jacquard base (7) to the lower surface of the Jacquard base (7). The internal thread assembly hole (11) is used to install the first screw. The rear part of the Jacquard base (7) is provided with a tail clip (10), and the front part of the tail clip (10) is provided with a first opening (55). The first screw passes through the first opening (55) from top to bottom and is locked onto the internal thread assembly hole (11).

[0011] Furthermore, when the piezoelectric Jacquard comb is installed on the comb bar (2), the front ends of the first protrusion (4), the front ends of the second protrusion (5), and the front ends of the third protrusion (6) abut against the slots inside the comb bar (2).

[0012] Compared with the prior art, the beneficial effects of the present invention are as follows: This invention has a simple structure and strong practicality. The second protrusion is set in the middle of the positioning dovetail as the main support, which, together with the first and third protrusions on the left and right sides, forms a three-section integrated support structure. The overall bending and torsional strength is significantly improved. When the comb swings back and forth at high speed, the three-section structure is not easily twisted or deformed. The three protrusions simultaneously abut against the slots in the comb, making the Jacquard base more firmly installed on the comb. Attached Figure Description

[0013] Figure 1This is a schematic diagram of the Jacquard base.

[0014] Figure 2 This is a schematic diagram of a piezoelectric Jacquard comb mounted on a comb bar.

[0015] Figure 3 This is a schematic diagram of the structure of the first opening.

[0016] Figure 4 A schematic diagram showing a nut welded to the bottom of the third opening.

[0017] Figure 5 This is a schematic diagram of the third slot.

[0018] Figure 6 This is a schematic diagram of the second socket.

[0019] Figure 7 This is a schematic diagram of the second driving circuit.

[0020] Figure 8 This is a module diagram of a piezoelectric Jacquard comb. Detailed Implementation

[0021] The specific embodiments of the present invention will now be described with reference to the accompanying drawings.

[0022] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention.

[0023] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be present in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0024] Unless otherwise defined, the technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention pertains. The terms “first,” “second,” and similar terms used in the specification and claims of this patent application do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as “comprising” or “having” mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as “inner,” “outer,” “upper,” and “lower” are used only to indicate relative positional relationships; these relative positional relationships may change accordingly when the absolute position of the described object changes.

[0025] Example 1, refer to Figure 1 , Figure 2 , Figure 3 and Figure 4 A piezoelectric Jacquard comb 3 with a stable base installation. The Jacquard base 1 of the piezoelectric Jacquard comb 3 can be directly assembled onto the comb bar 2 of a warp knitting machine. When the piezoelectric Jacquard comb 3 is installed on the comb bar 2, the front ends of the first protrusion 4, the second protrusion 5, and the third protrusion 6 respectively abut against the slots inside the comb bar 2.

[0026] Reference Figure 1 , Figure 2 , Figure 3 and Figure 4 The piezoelectric Jacquard comb includes: a Jacquard base 7, a positioning dovetail 8, a piezoelectric ceramic sheet 18, a yarn guide needle 19, and a drive circuit board 15. The piezoelectric ceramic sheet 18 is mounted on the upper surface of the Jacquard base 7, the yarn guide needle 19 is mounted on the front end of the piezoelectric ceramic sheet 18, a portion of the drive circuit board 15 is disposed in the tail clip 10, and the electrical signal output terminal of the drive circuit board 15 is electrically connected to the electrical signal input terminal at the rear of the piezoelectric ceramic sheet 18. The positioning dovetail 8 is disposed on the lower surface of the Jacquard base 7.

[0027] Reference Figure 1 , Figure 2 , Figure 3 and Figure 4 The positioning dovetail 8 includes a first protrusion 4, a second protrusion 5, a third protrusion 6, a first groove 9, and a second groove 10.

[0028] Reference Figure 1 , Figure 2 , Figure 3 and Figure 4 The second protrusion 5 is located on the central axis of the Jacquard base 7, the first slot 9 is located on the left side of the second protrusion 5, and the first protrusion 4 is located on the left side of the first slot 9.

[0029] Reference Figure 1 , Figure 2 , Figure 3 and Figure 4 The second slot 10 is located on the upper right side of the second protrusion 5, and the third protrusion 6 is located on the upper right side of the second slot 10.

[0030] Reference Figure 1 , Figure 2 , Figure 3 and Figure 4 The first protrusion 4, the second protrusion 5, the third protrusion 6, the first slot 9, and the second slot 10 are arranged on the same horizontal line from left to right.

[0031] Reference Figure 1 , Figure 2 , Figure 3 and Figure 4 The first protrusion 4 extends toward the front of the Jacquard base 7, the second protrusion 5 extends toward the front of the Jacquard base 7, and the third protrusion 6 extends toward the front of the Jacquard base 7.

[0032] Reference Figure 1 , Figure 2 , Figure 3 and Figure 4 The first slot 9 and the second slot 10 are symmetrically arranged on the left and right sides of the second protrusion 5 with the second protrusion 5 as the center.

[0033] Reference Figure 1 , Figure 2 , Figure 3 and Figure 4 The first protrusion 4 and the third protrusion 6 are symmetrically arranged on the left and right sides of the second protrusion 5 with the second protrusion 5 as the center. The left edge of the first protrusion 4 is flush with the left edge of the Jacquard base 7, and the right edge of the third protrusion 6 is flush with the right edge of the Jacquard base 7.

[0034] Reference Figure 1 , Figure 2 , Figure 3 and Figure 4 , refer to Figure 1 and Figure 2 The opening direction of the first slot 9 is towards the front side of the Jacquard base 7, and the opening direction of the second slot 10 is also towards the front side of the Jacquard base 7.

[0035] Reference Figure 1 , Figure 2 , Figure 3 and Figure 4 The front section of the Jacquard base 7 is provided with a weight reduction groove, which extends from the upper surface of the Jacquard base 7 to the lower surface of the Jacquard base 7. A weight reduction groove 12 is provided on the front side of the first slot 9, and another weight reduction groove 13 is provided on the front side of the second slot 10.

[0036] Reference Figure 1 , Figure 2 , Figure 3 and Figure 4 The rear part of the Jacquard base 7 is provided with an internal threaded mounting hole 11. The internal threaded mounting hole 11 extends from the upper surface of the Jacquard base 7 to the lower surface of the Jacquard base 7. The internal threaded mounting hole 11 is used to install the first screw. The rear part of the Jacquard base 7 is provided with a tail clip 10. The front part of the tail clip 10 is provided with a first opening 55. The first screw passes through the first opening 55 from top to bottom and is locked in the internal threaded mounting hole 11.

[0037] Reference Figure 1 , Figure 2 , Figure 3 and Figure 4 The rear part of the Jacquard base 7 is provided with a second opening 14. The tail clip 10 is equipped with a drive circuit board 15. The drive circuit board 15 is used to drive the piezoelectric ceramic sheet 18. The front part of the drive circuit board 15 is provided with a third opening 16. A nut 17 is fixedly welded to the bottom of the third opening 16. The internal threads of the third opening 16, the nut 17 and the second opening 14 are stacked together from top to bottom. The second screw passes through the third opening 16, the internal threads of the nut 17 and the second opening 14 from top to bottom.

[0038] Reference Figure 1 , Figure 2 , Figure 3 and Figure 4 The rear part of the Jacquard base 7 is provided with an internal threaded assembly hole 11. The internal threaded assembly hole 11 extends from the upper surface of the Jacquard base 7 to the lower surface of the Jacquard base 7. The internal threaded assembly hole 11 is used to install the first screw. The rear part of the Jacquard base 7 is equipped with a tail clip 10. The front part of the tail clip 10 is installed on the internal threaded assembly hole 11 by the first screw to realize the quick installation and removal of the tail clip 10.

[0039] Reference Figure 1 , Figure 2 , Figure 3 and Figure 4 The second protrusion 5 is set in the middle of the positioning dovetail 8 as the main support, and together with the first protrusion 4 and the third protrusion 6 on the left and right sides, a three-section integrated support structure is formed, which significantly improves the overall bending and torsional strength. When the comb 2 swings back and forth at high speed, the three-section structure is not easy to twist and deform. The three protrusions simultaneously abut against the slots in the comb 2, making the Jacquard base 1 more firmly installed on the comb 2.

[0040] Reference Figure 1 , Figure 2 , Figure 3 and Figure 4The positioning dovetail 8 is symmetrically opened with two hollowed-out sections, the first slot 9 and the second slot 10, which, together with the Jacquard base 7 through-through weight reduction groove 12, remove excess material, realize the lightweighting of the Jacquard base 1, reduce the moment of inertia, reduce the load on the main shaft, reduce the vibration and operating noise of the whole machine, and support the high-speed continuous weaving of the warp knitting machine.

[0041] Reference Figure 1 , Figure 2 , Figure 3 and Figure 4 The second protrusion 5 in the middle bears most of the vibration load, disperses the stress at the root of the protrusion, avoids stress concentration and cracking, extends the service life of the Jacquard base 1, and reduces the losses caused by equipment downtime for replacing parts.

[0042] Reference Figure 1 , Figure 2 , Figure 3 and Figure 4 The first slot 9, the second slot 10, the first protrusion 4 and the third protrusion 6 are all symmetrically arranged around the central axis of the Jacquard base 1. The reference is unified during CNC machining, and the parallelism and dimensional consistency of each part are better, which improves the efficiency of batch processing and assembly.

[0043] Example 2, refer to Figure 5 , Figure 6 , Figure 7 and Figure 8 The difference between this second embodiment and the first embodiment is that: the piezoelectric ceramic sheet 18 is disposed on the front part of the Jacquard base 1, the yarn guide needle 19 is disposed on the front part of the piezoelectric ceramic sheet 18, and a portion of the drive circuit board 15 is disposed on the rear part of the Jacquard base 1. The output end of the drive circuit board 15 is electrically connected to the input end of the piezoelectric ceramic sheet 18. A second conductive cable 20 is disposed on the conductive sheet at the tail of the piezoelectric ceramic sheet 18, and a second plug 21 is disposed on the front end of the second conductive cable 20. The second plug 21 is installed into the corresponding second socket 22 by plugging.

[0044] Reference Figure 5 , Figure 6 , Figure 7 and Figure 8 The driver circuit board 15 contains multiple conductive ribbon cables. An IC chip 56 is integrated on the driver circuit board 15, and the number of output pins of the IC chip 56 is X. A second socket 22 is located at the front end of the driver circuit board 15, and the number of input pins of the second socket 22 is Y, where X = Y. Each output pin of the IC chip 56 is electrically connected to each input pin of the second socket 22 via a corresponding conductive ribbon cable. Each output pin is electrically connected to a corresponding piezoelectric ceramic sheet 18 via a corresponding output terminal of the driver circuit board 15. X can be 32 or 64. The IC chip 56 contains a driver circuit, and the number of driver circuits is Z, where Z = X.

[0045] Reference Figure 5 , Figure 6 , Figure 7 and Figure 8 The drive circuit board 15 has multiple independent, non-intersecting copper conductive lines formed inside by etching process. Each conductive line has metal pads at both ends for connecting the output pin of IC chip 56 and the input pin of second socket 22 respectively, to achieve one-to-one electrical connection. The drive circuit board 15 has mounting holes at the four corners, which can be fixed to the comb base as a whole with screws, making disassembly and assembly convenient.

[0046] Reference Figure 5 , Figure 6 , Figure 7 and Figure 8 The pattern control electrical signal is introduced into the IC chip 56 through the first conductive contact 24. The input electrical signal is divided into only two logic states: 5V high level and 0V low level. The high level triggers the corresponding drive circuit to turn on and output the drive voltage, and the low level controls the drive circuit to turn off and there is no drive voltage output. The drive circuit board 15 is equipped with a second conductive contact 25. The second conductive contact 25 is interconnected with the bottom circuit of the first conductive contact 24, and can synchronously split and transmit the input level and serve as an external detection port.

[0047] Reference Figure 5 , Figure 6 , Figure 7 and Figure 8 The piezoelectric ceramic sheet 18 is connected to the second plug 21 via the second conductive cable 20 at the tail conductive plate. The second plug 21 is plugged into the second socket 22. The pins of the second socket 22 transmit the high and low level drive signals output by the IC chip 56 to the piezoelectric ceramic sheet 18 through the plug and the wire. When the piezoelectric ceramic sheet 18 receives the high level voltage, it undergoes lateral deformation and drives the matching guide needle 19 to shift to complete the warp yarn layer jacquard. When it receives the low level signal, there is no drive voltage input, and the ceramic sheet resets itself by its own elasticity. The guide needle 19 returns to the initial position. The continuous dynamic switching of multiple signals, combined with the reciprocating motion of the comb, can complete the weaving of the complete fabric pattern.

[0048] Reference Figure 5 , Figure 6 , Figure 7 and Figure 8 Compared to the existing traditional Jacquard driver circuit board 15, the production of 32-pin dual-pin Jacquard uses a 64-pin IC paired with a 64-pin second socket 22, completely avoiding the problem of 32 unused pins being wasted when using a 64-pin chip to assemble a 16-pin single-pin Jacquard.

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

[0050] Example 3, refer to Figure 5 , Figure 6 , Figure 7 and Figure 8 The difference between this embodiment 3 and embodiment 1 is that the IC chip 56 is integrated in the middle of the driving circuit board 15. The chip has Z independent driving circuits. The number of driving circuits Z and the number of IC output pins X are strictly matched. Each driving circuit receives a set of pattern level signals. The circuits are isolated from each other by the substrate insulation area. When the main controller sends a high level signal, the corresponding internal switch of the driving circuit is turned on and outputs a stable driving voltage to the corresponding output pin. When the main controller sends a low level signal, the corresponding internal switch of the driving circuit is turned off and no voltage is output. The multiple driving circuits can operate synchronously and independently, respectively controlling the piezoelectric ceramic sheet 18 matched with the single yarn guide needle 19.

[0051] Other structures are similar to those in Embodiment 1, and will not be described in detail here.

[0052] Example 4, refer to Figure 5 , Figure 6 , Figure 7 and Figure 8 The difference between this fourth embodiment and the first embodiment is that the driving circuit board 15 is provided with a second conductive contact 25, which is used to output the electrical signal transmitted by the first conductive contact 24.

[0053] Reference Figure 5 , Figure 6 , Figure 7 and Figure 8 A second conductive contact 25 is provided below the first conductive contact 24. The second conductive contact 25 corresponds one-to-one with the first conductive contact 24. The second conductive contact 25 is connected to the bottom copper foil circuit of the first conductive contact 24, and can shunt and output the input high and low level signals.

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

[0055] Example 5, refer to Figure 5 , Figure 6 , Figure 7 and Figure 8 The difference between this fifth embodiment and the first embodiment is that: an IC chip 56 is integrated and surface-mounted in the middle of the driver circuit board 15, and the number of output pins X on one side of the IC chip 56 is 64; a plastic insulated pluggable second socket 22 is welded and fixed to the front edge of the driver circuit board 15, and the second socket 22 is arranged parallel to the front end of the driver circuit board 15, with the number of input pins Y of the second socket 22 being 32. Reference Figure 5 , Figure 6 , Figure 7 and Figure 8The 6432 internal conductive ribbon cables connect the 64 IC output pins to the 64 second socket 22 input pins one by one. There are no shared pins or intermediate conductive contacts. All 64 output pins of the IC chip 56 are connected to the second socket 22 through conductive ribbon cables, corresponding to 32 guide needles 19 and piezoelectric ceramic plates 18. There are no idle pins, making full use of all the chip's driving resources.

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

[0057] Example 6, refer to Figure 5 , Figure 6 , Figure 7 and Figure 8 The difference between this sixth embodiment and the first embodiment is that the IC chip 56 integrates 64 independent first driving circuits 23, and the total number of first driving circuits 23 is Z=64, which satisfies the matching relationship Z=X.

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

[0059] Example 7, referring to Figure 5 , Figure 6 , Figure 7 and Figure 8 The difference between this embodiment seven and embodiment one is that: the IC chip 56 with output pin X=64, the input pin Y of the front second socket 22 is synchronously adjusted to 64, 64 independent conductive ribbon cables are etched inside the drive circuit board 15, the number of drive circuits inside the IC is Z=64, and all four output pins of the chip correspond to the piezoelectric ceramic sheet 18 of the 64 guide needles 19.

[0060] Other structures are similar to those in Embodiment 1, and will not be described in detail here.

[0061] Example 8, refer to Figure 5 , Figure 6 , Figure 7 and Figure 8 The difference between this embodiment eight and embodiment one is that the driving circuit board 15 includes a first printed circuit board 30 and a second printed circuit board 31. The first printed circuit board 30 and the second printed circuit board 31 are stacked in parallel to each other, and the overall structure is flat and compact with high space utilization.

[0062] Reference Figure 5 , Figure 6 , Figure 7 and Figure 8An IC chip 56 is integrated on the upper surface of the first printed circuit board 30. The IC chip 56 contains a first driving circuit 23, which outputs the driving signals required to drive the piezoelectric ceramic sheet 18. Two sets of third PCB edge pad contacts 32 are provided on the lower surface of the first printed circuit board 30. These two sets of third PCB edge pad contacts 32 are parallel to each other and spaced apart, forming two independent signal channels. A second driving circuit 35 is arranged on the lower surface of the second printed circuit board 31, cooperating with the first driving circuit 23 to achieve multi-channel signal coordinated driving. A set of fourth PCB edge pad contacts 33 is provided on the left and right edges of the lower surface of the second printed circuit board 31. These two sets of fourth PCB edge pad contacts 33 are also arranged parallel and spaced apart, corresponding to the positions of the third PCB edge pad contacts 32.

[0063] Reference Figure 5 , Figure 6 , Figure 7 and Figure 8 The upper surface of the second printed circuit board 31 completely adheres to and covers the lower surface of the first printed circuit board 30, ensuring that the first and second printed circuit boards 30 and 31 remain parallel and stacked. The third and fourth PCB edge pad contacts 32 and 33 extend to the sides of the first and second printed circuit boards 30 and 31, respectively. Through side soldering, the corresponding third and fourth PCB edge pad contacts 32 and 33 are soldered to establish conductivity, enabling bidirectional transmission of power and control signals between the first and second printed circuit boards 30 and 31. The first printed circuit board 30 is provided with the fourth PCB edge pad contact 33, which is used to output the electrical signals transmitted by the third PCB edge pad contact 32.

[0064] Reference Figure 5 , Figure 6 , Figure 7 and Figure 8 During operation, the first drive circuit 23 and the second drive circuit 35 work together to output multiple stable drive voltage signals. These signals are transmitted to the piezoelectric ceramic sheet 18 of the Jacquard guide needle block through the side-welded conductive contact structure. The piezoelectric ceramic sheet 18 generates controllable bending deformation based on the piezoelectric inverse effect, driving the guide needle 19 to complete precise displacement and layered jacquard movements, achieving continuous and stable fabric weaving. The side solder joints are strong and have excellent vibration resistance, effectively avoiding problems such as poor signal contact and signal interruption during long-term operation of the equipment.

[0065] Reference Figure 5 , Figure 6 , Figure 7 and Figure 8The first driving circuit 23 and the second driving circuit 35 are respectively arranged on different surfaces of the first printed circuit board 30 and the second printed circuit board 31, which effectively disperses the wiring pressure of the single-layer circuit board, avoids electromagnetic crosstalk caused by dense and intersecting lines, and ensures the stability of multi-channel driving signal transmission.

[0066] Reference Figure 5 , Figure 6 , Figure 7 and Figure 8 The first printed circuit board 30 and the second printed circuit board 31 are connected by side soldering, which allows the first printed circuit board 30 and the second printed circuit board 31 to be completely bonded and stacked. There is no need to reserve solder pad space on the bonding surface, which greatly frees up the wiring space in the middle area of ​​the circuit board, improves the rationality of the circuit layout and the overall integration, and adapts to the needs of miniaturization and high density assembly.

[0067] Reference Figure 5 , Figure 6 , Figure 7 and Figure 8 The fourth PCB edge pad contact 33 is arranged on the left and right edges of the lower surface of the second printed circuit board 31, and the two sets of fourth PCB edge pad contact 33 are arranged in parallel and spaced apart, so as to realize the independent conduction of the drive circuit, further isolate the drive signals of different groups, reduce mutual interference of signals, and effectively improve the jacquard control accuracy.

[0068] Reference Figure 5 , Figure 6 , Figure 7 and Figure 8 The design employs a side-soldering connection structure, resulting in strong overall integrity and a secure connection after the solder joints are formed. Compared to traditional plug-in structures, it eliminates the risk of loosening or poor contact, and can withstand the high-speed vibration of warp knitting machines for extended periods, significantly improving equipment stability and service life. During disassembly, the solder joints are heated to melt the solder, thereby separating the first printed circuit board 30 and the second printed circuit board 31.

[0069] Reference Figure 5 , Figure 6 , Figure 7 and Figure 8 The first printed circuit board 30 has a second socket 22 at the front, which can be directly connected to install the piezoelectric ceramic sheet 18 of the Jacquard yarn guide needle block. The wiring and assembly operations are simple and convenient. Later equipment maintenance and parts replacement do not require disassembling the circuit board structure, effectively reducing maintenance difficulty and improving production and maintenance efficiency.

[0070] Reference Figure 5 , Figure 6 , Figure 7 and Figure 8The first printed circuit board 30 and the second printed circuit board 31 are stacked in parallel, with a neat and compact overall structure that occupies little space. This facilitates the dense assembly of multiple jacquard combs on the comb base, adapting to the assembly requirements of high-needle-count and wide-width warp knitting equipment, and making the equipment highly versatile.

[0071] Other structures are similar to those in Embodiment 1, and will not be described in detail here.

[0072] Example 9, referring to Figure 5 , Figure 6 , Figure 7 and Figure 8 The difference between this embodiment nine and embodiment one is that the two sets of third PCB board edge pad contacts 32 and the two sets of fourth PCB board edge pad contacts 33 are all arranged in an equidistant parallel interval, and the fourth PCB board edge pad contacts 33 are precisely arranged on the left and right sides of the lower surface of the second printed circuit board 31, providing sufficient operating space for side soldering.

[0073] Reference Figure 5 , Figure 6 , Figure 7 and Figure 8 The side welding is performed using tin soldering, resulting in uniform and full weld filling and stable solder joint resistance. Simultaneously, the partitioned edge contact layout divides the drive circuit into two independent working areas. The two sets of circuit signals do not interfere with each other and can drive different groups of piezoelectric ceramic sheets 18 respectively, achieving multi-channel independent jacquard control. It can adapt to the arrangement requirements of various specifications of guide needles 19, such as 16-needle, 24-needle, and 32-needle, meeting the weaving needs of both simple and complex high-precision patterns, thus enhancing the equipment's versatility and adaptability.

[0074] Other structures are similar to those in Embodiment 1, and will not be described in detail here.

[0075] Example 10, referring to Figure 5 , Figure 6 , Figure 7 and Figure 8The difference between Embodiment 10 and Embodiment 1 is that Embodiment 10 also includes a first socket 40, a first conductive cable 41, and a second conductive cable 20. The upper part of the first printed circuit board 30 is provided with a third PCB edge pad contact 32, a fourth PCB edge pad contact 33, and a first driving circuit 23. The output end of the first driving circuit 23 is electrically connected to the third PCB edge pad contact 32. The first socket 40 is fixedly installed at the third PCB edge pad contact 32 and achieves stable conduction. The front end of the first conductive cable 41 integrates a first plug 42, which can be quickly connected to external devices. The rear end of the first conductive cable 41 is fixedly connected to the fourth PCB edge pad contact 33. During operation, an external first electrical signal is input to the first driving circuit 23 through the first socket 40 and the first conductive contact 24. The first driving circuit 23 outputs a matching second electrical signal according to the first electrical signal, and simultaneously outputs it outward through the fourth PCB edge pad contact 33 and the first conductive cable 41.

[0076] Reference Figure 5 , Figure 6 , Figure 7 and Figure 8 The first printed circuit board 30 integrates a third PCB edge pad contact 32, a fourth PCB edge pad contact 33, a first socket 40, and a first conductive cable 41. The first conductive cable 41, the first plug 42, and the first socket 40 form an integrated signal output channel and a signal input channel, replacing the traditional external distributed wiring structure. The wiring is neat and orderly, effectively solving the problem of messy and tangled cables in the whole machine.

[0077] Reference Figure 5 , Figure 6 , Figure 7 and Figure 8 The first electrical signal is input through the first socket 40 and the third PCB edge pad contact 32. After being processed by the first drive circuit 23, the second electrical signal is output through the second conductive contact 25, which can meet the needs of multiple sets of piezoelectric Jacquard cascade assembly. The rear end of the first conductive cable 41 is fixedly connected to the first conductive contact 24 by welding. The connection is firm and has good vibration resistance, which can effectively avoid faults such as loosening of the line, breakage and signal abnormality during long-term operation.

[0078] Reference Figure 5 , Figure 6 , Figure 7 and Figure 8 A second socket 22 is provided at the lower part of the first printed circuit board 30. The piezoelectric ceramic sheet 18 is connected to the second socket 22 through the second plug 21 at the end of the second conductive cable 20, so as to achieve quick disassembly and assembly without cumbersome soldering operations, effectively improving the efficiency of equipment assembly, maintenance and replacement.

[0079] Reference Figure 5, Figure 6 , Figure 7 and Figure 8 By setting a second conductive cable 20, a first socket 40, a first conductive cable 41, and a first plug 42, the signal input, signal cascade output, and piezoelectric ceramic drive functions are integrated onto a single first printed circuit board 30. The structure is compact, suitable for the narrow installation space inside the piezoelectric jacquard comb, reduces external line signal interference, improves signal transmission stability, ensures accurate execution of jacquard actions, reduces fabric weaving defect rate, and is suitable for long-term continuous production conditions of warp knitting machines.

[0080] Reference Figure 5 , Figure 6 , Figure 7 and Figure 8 The first socket 40 and the second conductive contact 25 are welded and fixed together as a whole, which is structurally robust, provides stable conductivity, and has both fixing and conductive functions. The first socket 40 and the first conductive cable 41 are arranged together on the upper exposed position of the first printed circuit board 30 without structural obstruction, allowing for easy disassembly, assembly, and maintenance without interference.

[0081] Reference Figure 5 , Figure 6 , Figure 7 and Figure 8 The second socket 22 and the second plug 21 adopt a tight-fitting plug-in structure, which has good anti-vibration and anti-dislodgement effect and avoids the interface loosening caused by equipment vibration.

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

[0083] Example 11, referring to Figure 5 , Figure 6 , Figure 7 and Figure 8 The difference between this eleventh embodiment and the first embodiment is that a tail clip 10 is provided on the rear part of the Jacquard base 1. The upper outer surface of the tail clip 10 is provided with a third slot 43 and a fourth slot 44 at intervals. A portion of the first conductive cable 41 passes through the third slot 43 and extends outward from the third slot 43. The opening of the first socket 40 is located in the fourth slot 44. The third slot 43 is convex in shape. The fourth slot 44 is rectangular in shape.

[0084] Reference Figure 5 , Figure 6 , Figure 7 and Figure 8 The rear end of the first conductive cable 41 is fixed to the surface of the first conductive contact 24 by soldering. The soldered structure has low contact resistance and stable conduction, which can resist the pulling effect caused by high-frequency vibration of the equipment, avoid the line from falling off and poor contact, and ensure long-term stable signal transmission.

[0085] Reference Figure 5 , Figure 6 , Figure 7 and Figure 8 A second socket 22 is fixedly mounted on the lower part of the first printed circuit board 30. The input end of the second socket 22 is electrically connected to the output end of the drive circuit, serving as a dedicated drive interface port for the piezoelectric ceramic sheet 18. A second conductive cable 20 is welded to the tail of the piezoelectric ceramic sheet 18. A second plug 21 is provided at the end of the second conductive cable 20. The second plug 21 can be directly plugged into the second socket 22, realizing a quick electrical connection between the drive circuit and the piezoelectric ceramic sheet 18, which is convenient for assembly and disassembly and has high efficiency.

[0086] Reference Figure 5 , Figure 6 , Figure 7 and Figure 8 An external first electrical signal is input into the drive circuit through the second conductive contact 25. After signal processing, the drive circuit outputs a second electrical signal. One signal is cascaded through the first conductive contact 24 and the first conductive cable 41, while the other signal is output through the lower second socket 22, and then transmitted to the piezoelectric ceramic plate 18 via the second plug 21 and the second conductive cable 20. This drives the piezoelectric ceramic plate 18 to deform, thereby driving the yarn guide needle 19 to complete the jacquard weaving action. The first socket 40 and the first conductive cable 41 are located in the exposed area on the upper part of the first printed circuit board 30, without structural obstruction, making disassembly and maintenance convenient. The first socket 40 and the second conductive contact 25 are welded and fixed, resulting in a stable overall structure. The second socket 22 and the second plug 21 are tightly connected, effectively resisting equipment vibration and preventing the interface from loosening.

[0087] Other structures are similar to those in Embodiment 1, and will not be described in detail here.

[0088] 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 piezoelectric Jacquard comb stably mounted on a base, characterized in that: include: Jacquard base (7) and positioning dovetail (8), the positioning dovetail (8) being disposed on the lower surface of the Jacquard base (7). The positioning dovetail (8) includes a first protrusion (4), a second protrusion (5), a third protrusion (6), a first slot (9), and a second slot (10). The second protrusion (5) is located on the central axis of the Jacquard base (7), the first slot (9) is located on the left side of the second protrusion (5), and the first protrusion (4) is located on the left side of the first slot (9). The second slot (10) is located on the right side of the second protrusion (5), and the third protrusion (6) is located on the right side of the second slot (10). The first protrusion (4), the second protrusion (5), the third protrusion (6), the first slot (9), and the second slot (10) are arranged on the same horizontal line from left to right.

2. The piezoelectric Jacquard comb with stable base mounting as described in claim 1, characterized in that: The first protrusion (4) extends toward the front of the Jacquard base (7), the second protrusion (5) extends toward the front of the Jacquard base (7), and the third protrusion (6) extends toward the front of the Jacquard base (7).

3. The piezoelectric Jacquard comb with stable base mounting as described in claim 1, characterized in that: The first slot (9) and the second slot (10) are symmetrically arranged on the left and right sides of the second protrusion (5) with the second protrusion (5) as the center.

4. The piezoelectric Jacquard comb with stable base mounting as described in claim 1, characterized in that: The first protrusion (4) and the third protrusion (6) are symmetrically arranged on the left and right sides of the second protrusion (5) with the second protrusion (5) as the center. The left edge of the first protrusion (4) is flush with the left edge of the Jacquard base (7), and the right edge of the third protrusion (6) is flush with the right edge of the Jacquard base (7).

5. The piezoelectric Jacquard comb with stable mounting on a base as described in claim 1, characterized in that: The opening direction of the first slot (9) is towards the front side of the Jacquard base (7), and the opening direction of the second slot (10) is towards the front side of the Jacquard base (7).

6. The piezoelectric Jacquard comb with stable mounting on a base as described in claim 1, characterized in that: The front section of the Jacquard base (7) is provided with a weight-reducing groove, which extends from the upper surface of the Jacquard base (7) to the lower surface of the Jacquard base (7). A weight-reducing groove (12) is provided on the front side of the first slot (9), and another weight-reducing groove (13) is provided on the front side of the second slot (10).

7. The piezoelectric Jacquard comb with stable mounting on a base as described in claim 1, characterized in that: The Jacquard base (7) has an internal threaded assembly hole (11) on its rear part. The internal threaded assembly hole (11) extends from the upper surface of the Jacquard base (7) to the lower surface of the Jacquard base (7). The internal threaded assembly hole (11) is used to install the first screw. The Jacquard base (7) has a tail clip (10) installed on its rear part. The tail clip (10) has a first opening (55) at its front part. The first screw passes through the first opening (55) from top to bottom and is locked onto the internal threaded assembly hole (11).

8. The piezoelectric Jacquard comb with stable base mounting as described in claim 1, characterized in that: When the piezoelectric Jacquard comb is installed on the comb bar (2), the front ends of the first protrusion (4), the front ends of the second protrusion (5), and the front ends of the third protrusion (6) abut against the slots inside the comb bar (2).

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