CN112877895A - Wireless jacquard guide bar device and warp knitting machine using same - Google Patents

Abstract

A wireless jacquard guide bar device and a warp knitting machine using the jacquard guide bar device comprise at least one main control circuit board and at least one driving circuit board arranged on the main control circuit board, wherein the heating value of the main control circuit board is larger than that of the driving circuit board. Make main control circuit board generate heat and do not influence drive circuit board on the one hand, prolong drive circuit board's life, on the other hand when drive circuit board or one of them damage back of main control circuit board, only need single drive circuit board or the main control circuit board that damages of targeted plug-in change, and need not change drive circuit board and main control circuit board together, reduce the maintenance cost of later maintenance change drive circuit board or main control circuit board.

Description

Wireless jacquard guide bar device and warp knitting machine using same

Technical Field

The invention relates to the field of warp knitting machines, in particular to a wireless jacquard guide bar device and a warp knitting machine using the jacquard guide bar device.

Background

Traditional piezoelectricity merchant card actuating system includes merchant card and merchant card drive arrangement, and its structure is mainly installed a N merchant card on the sley bar, and wherein the merchant card is installed on the sley bar, and the drive arrangement of merchant card is installed every piece merchant card needle and all needs independent drive electric hawser usually in the warp knitting frame, and this just causes to be connected with many drive electric hawsers from being connected between drive arrangement and the merchant card sley bar.

Chinese invention patent (application No. 03801846.2, publication No. CN 100436685C) discloses a swing position adjusting device of a guide bar in a double needle bar raschel knitting machine.

Chinese utility model patent application No. 01802918.3 (publication No. CN 1272493C) discloses a jacquard device for a warp knitting machine, which is provided with a jacquard component on a jacquard guide bar, wherein the jacquard component is formed by arranging a plurality of piezoelectric ceramic elements containing jacquard guides in parallel, and the jacquard guide bar with a plurality of guide bars can be arranged.

A control system of a guy jacquard (application number: 201320720540.8, publication number: CN 203551995U) comprises an industrial personal computer, a guy jacquard controller, a guy jacquard repeater, a proximity switch, a guy jacquard driver and a guy jacquard.

Be provided with sixteen merchant card needles on current common merchant card comb, need the corresponding sixteen way drive circuit of looks adaptation to be used for supplying power to piezoelectric ceramic element for realizing accurate control sixteen merchant card needles, piezoelectric ceramic element produces deformation after the circular telegram, thereby drive sixteen merchant card needles and carry out jacquard weave work, traditional tricot machine is connected with piezoelectric ceramic element looks electricity through external drive circuit board, and at the great occupation space of external drive circuit board relatively, still can set up the drive circuit the same with original simultaneously if can reduce the area of circuit board, just help reducing the whole occupation space of tricot machine.

In order to solve the problem that the number of cable ropes for connecting a jacquard guide bar on a warp knitting machine is various and unattractive, a 'wireless jacquard' concept is provided, the 'wireless' called in the 'wireless jacquard' mentioned in the patent is not generally understood to achieve the wireless effect of eliminating the cable rope in a radio signal transmission mode, the 'wireless jacquard' still needs to use one cable rope to be connected with a power supply so as to supply power to a piezoelectric ceramic element on the jacquard guide bar, the 'wireless' means that the cable rope can be hidden or can be processed by adopting a storage method or other power supply structures are used, so that the appearance effect of the jacquard guide bar has an approximately wireless appearance, the problem that the number of the cable ropes used for connecting the jacquard guide bar on the warp knitting machine is large and the jacquard guide bar is unattractive is solved, therefore, the external appearance of the jacquard guide bar is more attractive and tidy, and finally, only one electric cable is used for supplying power to the N jacquard guide bars.

Disclosure of Invention

The invention provides a wiring assembly of a wireless jacquard and a warp knitting machine using the wiring assembly, and mainly aims to overcome the defect that the normal use of other electronic components on a circuit board is influenced by the large heat productivity on a main control circuit board on the existing jacquard guide bar.

In order to solve the technical problems, the invention adopts the following technical scheme:

the wireless jacquard guide bar device comprises at least one main control circuit board and at least one driving circuit board arranged on the main control circuit board, wherein the heat productivity of the main control circuit board is greater than that of the driving circuit board.

Furthermore, the device also comprises at least one first connector which is used for connecting the main control circuit board and the drive circuit board and can be plugged, one end of the first connector is arranged on the main control circuit board, the other end of the first connector is arranged on the drive circuit board, and the output end of the main control circuit board is electrically connected with the enable end of the drive circuit board in a mode of setting the first connector.

Furthermore, the driving circuit board comprises at least one second circuit board and a plurality of piezoelectric ceramic piece driving circuits arranged on the second circuit board, and the output end of the piezoelectric ceramic piece driving circuit is electrically connected with the enabling end of the piezoelectric ceramic element.

Further, the shape of the driving circuit board is a convex shape.

Furthermore, the guide bar base and the driving circuit board surround to form a first air duct cavity, and the main control circuit board is arranged in the first air duct cavity.

Furthermore, still include a connecting circuit board, connecting circuit board includes that a third circuit board, a plurality of interval are located slot on third circuit board one side and locating second connector on the third circuit board opposite side, piezoceramics component's enable end is inserted and is established and install on the slot, the one end of second connector is located on the third circuit board, the other end of second connector is located on the dirver circuit board, make the third circuit board with but the electricity of plugging and unplugging between the dirver circuit board is connected through setting up the second connector.

Furthermore, the guide bar device also comprises an upper cover plate which is detachably covered on the upper side of the driving circuit board, and the rear end of the upper cover plate faces to a convex extending part formed by extending the rear part of the guide bar base.

Further, still include one locate first mounting groove on sley bar base bottom, one locate thimble that thimble board messenger can serve is located to thimble board and a plurality of roots in the first mounting groove, the thimble board output with master control circuit board messenger end electricity is connected, the messenger of thimble holds the orientation the direction of sley bar bed extends.

A jacquard device comprises at least more than one jacquard guide bar.

A warp knitting machine comprises at least one jacquard guide bar.

Compared with the prior art, the invention has the beneficial effects that:

1. the invention has simple structure and strong practicability, and the main control circuit board and the drive circuit board which can be plugged and unplugged on the main control circuit board form a double-layer circuit board structure, so that the electronic component with larger heat productivity is arranged on the main control circuit board, and the electronic component with smaller heat productivity is arranged on the drive circuit board.

2. In the invention, the driving circuit board and the main control circuit board are separately arranged, so that the normal operation of the driving circuit board is not influenced by the heating of the main control circuit board, the service life of the driving circuit board is prolonged, and the operation stability of the first piezoelectric ceramic piece driving circuit and the second piezoelectric ceramic piece driving circuit on the driving circuit board is improved.

3. In the invention, the first piezoelectric ceramic piece driving circuit is arranged on the upper surface of the second circuit board, the second piezoelectric ceramic piece driving circuit is arranged on the lower surface of the second circuit board, more piezoelectric ceramic piece driving circuits are effectively arranged by utilizing two side parts of the second circuit board, compared with the method that the piezoelectric ceramic piece driving circuit is arranged on one side of the second circuit board, and the piezoelectric ceramic piece driving circuits are arranged on two side surfaces of the second circuit board, the quantity of the piezoelectric ceramic piece driving circuits which can be installed only by the area of two second circuit boards with the same size when the traditional second circuit board is installed on one side is realized, the effect of reducing the resource waste of the second circuit board is achieved, on the other hand, the integration level of the piezoelectric ceramic piece driving circuits on the jacquard guide bar is favorably improved, the internal space of the jacquard guide bar is reasonably utilized for circuit arrangement, and the whole appearance structure of the jacquard guide bar is, the jacquard guide bar is not required to be externally connected with a driving circuit board through a cable rope, so that an electric cable on the jacquard guide bar is reduced, the warp knitting machine is more attractive integrally, and the effect of killing two birds with one stone is achieved.

4. In the invention, the first air duct cavity is arranged, so that the heat dissipation effect on the driving circuit board and the main control circuit board is favorably realized, and the first air duct cavity can be used as a space for accommodating electronic components on the main control circuit board, so that the space of the first air duct cavity is effectively utilized, and the dual-purpose effect is realized.

5. In the invention, the second connector is arranged to enable the driving circuit board and the third circuit board to be inserted and connected together in a pluggable manner, so that the third circuit board, the piezoelectric ceramic element unit and the jacquard needle mechanism which can be normally used can be continuously used only by independently replacing the driving circuit board when a new driving circuit board is replaced in a later period, or the driving circuit board which can be normally used can be continuously used without replacing only by independently replacing the third circuit board, the piezoelectric ceramic element unit and the jacquard needle mechanism when a new third circuit board or a new piezoelectric ceramic element is replaced in a later period, so that the replacement and maintenance cost of parts in the later period is reduced.

6. According to the jacquard guide bar, the upper cover plate is arranged to extend towards the rear of the guide bar base to form the protruding extension portion, on one hand, an operator can conveniently install the jacquard guide bar on a warp knitting machine by holding the upper cover plate with hands in the installation process, and can conveniently take the jacquard guide bar, on the other hand, the extension portion is arranged to be held by the hands of the operator, so that the damage of other portions of the operator holding the jacquard guide bar in the installation process to the jacquard guide bar or the pollution of dirt on the hands of the operator to the jacquard guide bar can be avoided, the protection effect on the jacquard guide bar can be achieved, and the dual-purpose effect can be achieved.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

Fig. 2 is an exploded view of fig. 1.

Fig. 3 is a block diagram of the main control circuit board.

Fig. 4 is a block diagram of the driving circuit board.

Fig. 5 is a circuit diagram of a piezoelectric ceramic piece driving circuit.

Detailed Description

The following describes embodiments of the present invention with reference to the drawings.

Referring to fig. 1, a wireless jacquard bar apparatus and a warp knitting machine using the same, the warp knitting machine including at least one jacquard device for jacquard yarn guiding, the jacquard device including at least one jacquard bar and at least one bar bed 2 for mounting the jacquard bar.

Referring to fig. 1, 2, 3 and 4, the jacquard guide bar device includes a guide bar base 1 installed on a guide bar bed 2, at least one jacquard needle mechanism (not shown) installed on the front end of the guide bar base 1, at least one piezoelectric ceramic element 35 installed on the guide bar base 1 for driving the jacquard needle mechanism (not shown) to swing, at least one main control circuit board 21 installed on the guide bar base 1 and at least one driving circuit board 31 installed on the main control circuit board 21 in a pluggable manner, a connecting circuit board 4 installed above the guide bar base 1, an upper cover plate 16 detachably installed on the upper side of the driving circuit board 31, at least one heat-conducting medium 64 installed on the driving circuit board 31, at least one first connector 30 for connecting the main control circuit board 21 and the driving circuit board 31, a first installation groove 15 installed on the bottom of the guide bar base 1, a thimble board 51 installed in the first installation groove 15, a thimble board 51 installed on the thimble board 15, A plurality of thimbles 52 arranged on the enabling end of the thimble plate 51, at least one mounting seat 45 arranged on the rear end of the guide bar base 1, a first groove 61 arranged on the upper part of the mounting seat 45, a second groove 62 arranged on the lower part of the mounting seat 45 and extending inwards, at least one assembling partition 63 inserted in the second groove 62, a first locking piece 46 for limiting the assembling partition 63, at least one mounting column 43 arranged on the guide bar base 1 and used for mounting the upper cover plate 16, and at least one second locking piece 17 matched with the mounting column 43.

Referring to fig. 1 and 2, the guide bar base 1 includes a base portion 13 having a long strip shape, a plurality of needle grooves 14 spaced apart from each other at a front end of the base portion 13 for mounting a guide needle, a plurality of groove portions 15 spaced apart from each other at the base portion 13, and at least one protrusion 63 provided at a bottom of the second mounting portion 132.

Referring to fig. 1 and 2, base portion 13 includes a first mounting portion 131 provided on one side of groove portion 15 and a second mounting portion 132 provided on the other side of groove portion 15, and needle grooves 14 are specifically spaced apart from each other at a front end portion of first mounting portion 131 in the present embodiment.

Referring to fig. 1 and 2, the first mounting groove 15 is formed in the lower portion of the main control circuit board 21, and the concrete first mounting groove 15 is formed in the second mounting portion 132, and the guide bar base 1 may be an aluminum base.

Referring to fig. 1 and 2, the jacquard needle mechanism (not shown in the figures) includes a plurality of guide needles disposed at intervals on the needle groove 14, a guide hole disposed on one end of the guide needle, and a long-strip-shaped connecting member disposed at one end and connected with the other end of the guide needle, the piezoelectric ceramic element 35 is wrapped and covered on the surfaces of both sides of the connecting member, the needle groove 14 is disposed at the front of the guide bar base 1, and the front of the guide bar base 1 in the length extending direction is defined as the front of the guide bar base 1.

Referring to fig. 1 and 2, the upper cover 16 is mounted on the top of the mounting post 43 by using the second locking member 17 in the embodiment, such that the upper cover 16 is covered above the driving circuit board 31, the heat conducting medium 64 is disposed between the upper cover 16 and the driving circuit, and the rear end of the upper cover 16 extends toward the rear of the guide bar base 1 to form a convex extension 47.

Referring to fig. 1 and 2, through setting up a bellied extension 47 that upper plate 16 extends the formation to the rear of sley bar base, on the one hand operating personnel is on hand upper plate 16 in the installation on being convenient for install the merchant card sley on the warp knitting machine, also be convenient for operating personnel to take the merchant card sley, on the other hand is through setting up extension piece operating personnel hand and taking extension 47 position, avoid operating personnel to hold the damage that other positions of merchant card sley produced or produce the pollution to merchant card sley because of operating personnel dirt on hand to the merchant card sley in the installation, play the effect of protection to merchant card sley, play the dual-purpose effect of a thing.

Referring to fig. 1 and 2, the upper cover plate 16 is covered on the heat conducting medium 64, the upper side of the heat conducting medium 64 is abutted to the lower side of the upper cover plate 16, the lower side of the heat conducting medium 64 is covered on the upper side of the driving circuit board 31, the upper cover plate 16 can be made of a metal material with heat conductivity, the upper cover plate 16 can be further provided with a plurality of heat dissipation holes 65, on one hand, the heat dissipation holes 65 are arranged to facilitate the reduction of the weight of the upper cover plate 16, on the other hand, the heat dissipation holes 65 are arranged to facilitate the flow of air flow to dissipate heat of the driving circuit board 31, so that the effect of killing two birds with one stone is achieved, the heat conducting medium 64 can be heat conducting silica gel, the appearance of the heat conducting medium 64 can be square.

Referring to fig. 1 and 2, the output end of the ejector plate 51 is electrically connected to the enable end of the main control circuit board 21. The enabling end of the ejector plate 51 is electrically connected with an external power supply, the ejector 52 can be a telescopic ejector 52 made of a metal copper material, the ejector plate 51 can be a printed circuit board, and the ejector 52 can be arranged on the printed circuit board in a welding mode.

Referring to fig. 1 and 2, an enabling end of the thimble 52 extends towards the guide bar bed 2, in the embodiment, a strip-shaped guide groove 54 is provided on the guide bar bed 2, a conductive copper bar 53 extending along the extending direction of the guide groove 54 is provided in the guide groove 54, the enabling end of the thimble 52 is electrically connected to one end of the conductive copper bar 53, and the other end of the conductive copper bar 53 is electrically connected to an external power source through an electric cable. The thimble 52 and the conductive copper bar 53 are used for replacing a part of the length of the cable rope to transmit electric energy, so that the jacquard guide bar reduces the length of the electric cable inside the jacquard guide bar.

Referring to fig. 1 and 2, one end of the first connector 30 is disposed on the main control circuit board 21, and the other end of the first connector 30 is disposed on the driving circuit board 31, and the output end of the main control circuit board 21 and the enable end of the driving circuit board 31 are electrically connected by disposing the first connector 30.

Referring to fig. 1 and 2, through setting up an ejector plate 51 and thimble 52 alone, on the one hand make ejector plate 51 not receive the influence of temperature on the main control circuit board 31, even if ejector plate 51 damages and only need to change ejector plate 51 alone, and thereby drive circuit board 31 and main control circuit board 21 have effectively been protected to the independent operation of drive circuit board 31 and main control circuit board 21, only need pertinent change ejector plate 51 and thimble 52 and need not change drive circuit board 31 and main control circuit board 21 after ejector plate 51 damages, reduce the manufacturing cost of later maintenance renewal part, on the other hand sets up thimble 52 and is connected with external power supply looks electricity, the electric cable rope on the jacquard comb has been reduced, make the cable rope on the jacquard comb still more pleasing to the eye, play the effect that two birds with one stone.

Referring to fig. 3 and 4, the output terminal of the main control circuit board 21 is electrically connected to the enable terminal of the driving circuit board 31, the output terminal of the driving circuit board 31 is electrically connected to the enable terminal of the piezoelectric ceramic element 35, and the heat generation amount of the main control circuit board 21 is larger than that of the driving circuit board 31.

Referring to fig. 2 and 4, the driving circuit board 31 includes at least one second circuit board 32 and a plurality of piezoelectric ceramic driving circuits 33 disposed on the second circuit board 32.

Referring to fig. 2 and 4, the piezoceramic wafer driving circuit 33 includes at least one first piezoceramic wafer driving circuit 321 disposed on the upper surface of the second circuit board 32 and at least one second piezoceramic wafer driving circuit 322 disposed on the lower surface of the second circuit board 32.

Referring to fig. 4, by arranging the first piezoceramic wafer driving circuit 321 on the upper surface of the second circuit board 32 and the second piezoceramic wafer driving circuit 322 on the lower surface of the second circuit board 32, more piezoceramic wafer driving circuits 33 are arranged by effectively utilizing the two side portions of the second circuit board 32, compared with the method that the piezoceramic wafer driving circuit 33 is arranged on only one side of the second circuit board 32, the piezoceramic wafer driving circuits are arranged on the two side surfaces of the second circuit board 32, so that the number of the piezoceramic wafer driving circuits which can be installed only by the area of two second circuit boards 32 with the same size when the traditional second circuit board 32 is installed on one side is realized, the effect of reducing the resource waste of the second circuit board 32 is achieved, on the other hand, the integration level of the piezoceramic wafer driving circuits 33 on the jacquard bar is favorably improved, the internal space of the jacquard bar is reasonably utilized for circuit arrangement, the whole appearance structure of the jacquard bar is not, the jacquard guide bar is not required to be externally connected with a driving circuit board through a cable rope, so that an electric cable on the jacquard guide bar is reduced, the warp knitting machine is more attractive integrally, and the effect of killing two birds with one stone is achieved.

Referring to fig. 1 and 2, the driving circuit board 31 and the main control circuit board 21 are separately arranged, so that the main control circuit board 21 generates heat without affecting the normal operation of the driving circuit board 31, the service life of the driving circuit board 31 is prolonged, and the operation stability of the first piezoceramic wafer driving circuit 321 and the second piezoceramic wafer driving circuit 322 on the second circuit board 32 is improved.

Referring to fig. 1, the guide bar base 1 and the driving circuit board 31 form a first air duct cavity 44, and the main control circuit board 21 is disposed in the first air duct cavity 44.

Referring to fig. 1, the first air duct cavity 44 is arranged, so that on one hand, the driving circuit board 31 and the main control circuit board 21 are favorably cooled, and on the other hand, the first air duct cavity 44 can be used as a space for accommodating electronic components on the main control circuit board 21, so that the space of the first air duct cavity 44 is effectively utilized, and the dual-purpose effect is achieved.

Referring to fig. 1 and 2, the connection circuit board 4 includes a third circuit board 42, a plurality of slots 41 spaced apart from each other on one side of the third circuit board 42, and a second connector 34 disposed on the other side of the third circuit board 42, an enable terminal of each piezoelectric ceramic element 35 is inserted into and mounted on the slot 41, one end of the second connector 34 is disposed on the third circuit board 42, the other end of the second connector 34 is disposed on the driving circuit board 31, the third circuit board 42 and the driving circuit board 31 are electrically connected to each other in a pluggable manner by disposing the second connector 34, the enable terminal of the third circuit board 42 is electrically connected to the output terminal of the second circuit board 32 by the second connector 34, and thus the output terminal of the piezoelectric ceramic element 35 is electrically connected to the output terminal of the piezoelectric ceramic element driving circuit 33.

Referring to fig. 1 and 2, the first circuit board 22 is located above the ejector plate 51, the second circuit board 32 is located above the first circuit board 22, and the third circuit board 42 is located between the second circuit board 32 and the piezoelectric ceramic element 35 in the present embodiment.

Referring to fig. 1 and 3, the first pluggable connector 30 includes at least one first socket portion disposed on one side of the first circuit board 22 and at least one first pin disposed on one side of the second circuit board 32, and the first socket portion and the first pin are pluggable to each other and electrically connected together, so that the driving circuit board 31 is pluggable to the main control circuit board 21. The first connector 30 may be a PIN header PIN connector, preferably a PIN header PIN connector with sixteen PINs.

Referring to fig. 1, 2 and 4, the second connector 34 in this embodiment includes at least one second PIN 341 disposed on one side of the third circuit board 42 and a second socket 342 disposed on one side of the second circuit board 32 and adapted to the second PIN 341, the second PIN 341 is pluggable to the second socket 342, and the second connector 34 may be a PIN header connector.

The first pin and the second pin 341 may be pins made of conductive metal copper material.

Referring to fig. 1, the driving circuit board 31, the main control circuit board 21, the mounting posts 43 and the socket form a first air duct cavity 44.

Referring to fig. 1 and 2, a first mounting hole 431 adapted to the mounting post 43 is formed in the second circuit board 32, a second mounting hole 432 adapted to the mounting post 43 is formed in the first circuit board 22, a third mounting hole 433 is formed in the front portion of the upper cover plate 16, a fourth mounting hole 434 is formed in the guide bar base 1, an internal thread is formed in the fourth mounting hole 434, and the first mounting hole 431, the second mounting hole 432, the third mounting hole 433, and the fourth mounting hole 434 are all arranged on the same vertical line.

Referring to fig. 1 and 2, a fifth mounting hole 71 is formed in the top of the mounting seat 45, a sixth mounting hole 72 adapted to the fifth mounting hole 71 is formed in the upper rear portion of the upper cover plate 16, the rear portion of the upper cover plate 16 is fixedly mounted on the top of the mounting seat 45 by using a third locking member 73 which passes through the sixth mounting hole 72 and is locked in the fifth mounting hole 71, and the third locking member 73 is a screw.

Referring to fig. 1 and 2, the mounting post 43 is provided therein with a mounting groove having an internal thread, the mounting hole extends from the top end of the mounting post 43 to the bottom end of the mounting post 43, the second mounting hole 432 is locked with the second locking member 17, and the second locking member 17 is used to pass through the third mounting hole 433, the first mounting hole 431, the second mounting hole 432, the mounting groove and the fourth mounting hole 434 from top to bottom.

Referring to fig. 1 and 2, the bottom of the second locking member 17 can be locked in the fourth mounting hole 434, so that the driving circuit board 31 is mounted on the top of the mounting post 43, and the upper cover 16 is also mounted. The second locking member 17 passes through the first mounting hole 431 and the second mounting hole 432 to limit the driving circuit board 31 and the main control circuit board 21.

Referring to fig. 1 and 2, the bottom of the mounting post 43 is disposed on the fourth mounting hole 434, the number of the mounting posts 43 may be two, the second mounting hole 432 and the fourth mounting hole 434 may be both disposed at two intervals, the mounting post 43 may be disposed on one side of the first socket portion, and the mounting post 43 passes through the second mounting hole 432 so that the first circuit board 22 is positioned and mounted on the mounting post 43.

Referring to fig. 1 and 2, a first compression spring 433 may be further disposed on the upper side of the first mounting hole 431, the first compression spring 433 is located between the upper cover plate 16 and the driving circuit board 31, the first compression spring 433 is sleeved on the second locking member 17, and the first compression spring 433 is configured to limit the lowest point of the upper cover plate 16 during mounting of the upper cover plate 16 so that the upper cover plate 16 does not press the piezoelectric ceramic plate driving circuit 33 on the second circuit board 32.

Referring to fig. 1 and 2, the driving circuit board 31 has a convex shape, one side of the driving circuit board 31 extends into the first groove 61, and the protruding portion of the driving circuit board 31 extends into the first groove 61, so as to increase the area of the driving circuit board 31, the first groove 61 and the driving circuit board 31 surround to form a second air duct cavity 74, and the second air duct cavity 74 is communicated with the first air duct cavity 44.

Referring to fig. 1 and 2, by arranging the first groove 61, on one hand, the area of the second circuit board 32 is increased by effectively utilizing the space of the first groove 61 for arranging the piezoelectric ceramic piece driving circuit 33, on the other hand, the first groove 61 and the second circuit board 32 surround the second air duct cavity 74 to improve the heat dissipation effect of the surface of the driving circuit board 31, and the dual-purpose effect of one object is achieved, on the one hand, the mounting base 45 can provide a force-bearing point for holding, so that an operator can hold the force-bearing point for holding, and on the other hand, the mounting base 45 is also used for accommodating and mounting the second circuit board 32, so that the second circuit board 32 with a larger area can be arranged and accommodated, and the dual.

Referring to fig. 1 and 2, one end of the first locking member 46 is connected to the mounting partition 63, the other end of the first locking member 46 is mounted on the outer side surface of the mounting seat 45, and the second groove 62 is communicated with the second air duct cavity 74. The main control circuit board 21, the bump 63 and the second mounting portion 132 form a third air duct cavity in an enclosing manner, and the third air duct cavity is located below the main control circuit board 21.

Referring to fig. 1 and 2, the specific first locking member 46 in this embodiment includes a socket head cap screw and a second compression spring sleeved on the socket head cap screw, the assembly partition 63 is provided with two threaded holes including the interval setting, one end of the socket head cap screw passes through the internal threaded hole to enable the assembly partition 63 to be installed on the socket head cap screw, one end of the second compression spring abuts against one side surface of the assembly partition 63, the other end of the second compression spring abuts against the inner side wall surface of the second groove 62, the position of the assembly partition 63 is adjusted by rotating the socket head cap screw, and the bottom of the assembly partition 63 is clamped in the clamping groove of the guide bar bed 2.

Referring to fig. 1 and 2, a conductive plate is disposed at the other end of the connecting member, the conductive plate is inserted into the slot 41, and the conductive plate is fixedly mounted on the slot 41 by welding, so that the piezoelectric ceramic element 35 and the third circuit board 42 are connected into a whole, the other end of the connecting plate is connected to the kinetic energy-enabled end of the yarn guide needle, one end of the connecting member passes through the groove portion 15 and extends into the second mounting portion 132, and the other end of the connecting member extends into the first mounting portion 131. One end of the conductive sheet is electrically connected to the piezoelectric ceramic element 35, and the other end of the conductive sheet is electrically connected to the third circuit board 42, and the conductive sheet may be made of a conductive metallic copper material. The power on the third circuit board 42 is transmitted to the piezo-ceramic element 35 through the conductive sheet.

The connecting sheet and the slot 41 are vertically inserted and arranged, and the cross section of the connecting sheet and the slot 41 which are inserted and arranged is in a cross shape.

The piezoelectric ceramic element 35 can be a long-strip-shaped piezoelectric ceramic piece, and the piezoelectric ceramic piece deforms when a preset voltage is applied to the piezoelectric ceramic element 35, so that the connecting piece is driven by the piezoelectric ceramic element 35 to deform, the kinetic energy output end of the connecting piece swings, and the yarn guide needle swings under the driving of the connecting piece after the kinetic energy output end of the connecting piece swings. The direction of the swing of the yarn guide needle is the direction of the swing of the kinetic energy output end of the connecting piece.

Referring to fig. 1 and 2, the number of the yarn guide needles may be sixteen, the number of the needle grooves 14 and the groove portions 15 is adapted to the number of the yarn guide needles, the number of the adapted groove portions 15 may be sixteen, the number of the adapted needle grooves 14 may be sixteen, the number of the yarn guide needles may determine the yarn guide needles of a corresponding number according to the process requirement, and both the number of the needle grooves 14 and the number of the groove portions 15 may be adaptively determined according to the number of the yarn guide needles.

Referring to fig. 1, 2 and 4, taking the number of the yarn guide needles as an example, the number of the adapted piezoelectric ceramic pieces is sixteen, the driving circuit for driving the deformation of the piezoelectric ceramic pieces is the piezoelectric ceramic piece driving circuit 33, the enable end of each piezoelectric ceramic piece is connected with one piezoelectric ceramic piece driving circuit 33 for supplying power, when the number of the piezoelectric ceramic elements 35 is sixteen, the number of the adapted piezoelectric ceramic piece driving circuits 33 is sixteen, and one pair of the sixteen piezoelectric ceramic pieces driving circuits is used for supplying power to each piezoelectric ceramic element 35, so as to drive the piezoelectric ceramic elements 35 to deform and further drive the yarn guide needles, the sixteen piezoelectric ceramic piece driving circuits 33 are divided into two groups of piezoelectric ceramic piece driving circuits 33, each group of which is eight, the first piezoelectric ceramic piece driving circuit 321 is the group of the eight piezoelectric ceramic pieces 33, and the second piezoelectric driving circuit 322 is the other group of the eight piezoelectric ceramic pieces driving circuits 33.

Referring to fig. 1, 2 and 4, in the present embodiment, the second circuit board 32 is formed by integrally connecting a square portion and a protrusion 481 disposed on one side of the square portion 482, such that the second circuit board 32 has a convex shape, the eight piezoelectric ceramic wafer driving circuits 33 are respectively disposed at five piezoelectric ceramic wafer driving circuits 33 transversely disposed on the upper surface of the square portion 482, the three piezoelectric ceramic wafer driving circuits 33 are transversely disposed on the upper surface of the protrusion 481, such that eight piezoelectric ceramic wafer driving circuits 33 are formed, the five piezoelectric ceramic wafer driving circuits 33 are transversely disposed on the lower surface of the square portion 482, the three piezoelectric ceramic wafer driving circuits 33 are transversely disposed on the lower surface of the protrusion 481, such that eight piezoelectric ceramic wafer driving circuits 33 are formed, the eight piezoelectric ceramic wafer driving circuits 33 are arranged on the upper surface of the first circuit board 22, and the eight piezoelectric ceramic wafer driving circuits 33 are arranged on the lower surface of the first circuit board 22 The piezoelectric ceramic chip drive circuits 33 of the chip drive circuit 33, which are sixteen paths in total, supply power to each piezoelectric ceramic element 35 in a one-to-one correspondence.

Referring to fig. 1 and 2, the piezoceramic wafer drive circuit 33 and the piezoceramic element 35 may be electrically connected by a second connector 34.

Referring to fig. 3, the main control circuit board 21 includes at least one first circuit board 22 disposed on the guide bar base 1, at least one line protection circuit 23, at least one voltage regulator circuit 25, at least one communication detection circuit 24, at least one digital control boosting power supply 28, at least one digital-to-analog circuit 27, at least one processor unit 26, and at least one driving pre-stage 29, wherein the line protection circuit 23, the voltage regulator circuit 25, the communication detection circuit 24, the digital control boosting power supply 28, the digital-to-analog circuit 27, the processor unit 26, and the driving pre-stage 29 are all disposed on the first circuit board 22.

Referring to fig. 3, the enable terminal of the line protection circuit 23 is electrically connected to the output terminal of the ejector plate 51 for receiving 40-45V dc, the output terminal of the line protection circuit 23 is electrically connected to the enable terminal of the voltage stabilizing circuit 25, the output terminal of the line protection circuit 23 is electrically connected to the enable terminal of the communication detection circuit 24, the output terminal of the voltage stabilizing circuit 25 is electrically connected to the enable terminal of the digitally controlled boost power supply 28, the output terminal of the voltage stabilizing circuit 25 is electrically connected to the enable terminal of the digital-to-analog circuit 27, the output terminal of the voltage stabilizing circuit 25 is electrically connected to the enable terminal of the processor unit 26, the output terminal of the communication detection circuit 24 is electrically connected to the enable terminal of the processor unit 26, the output terminal of the processor unit 26 is electrically connected to the enable terminal of the driving pre-stage 29 circuit, the output terminal of the driving pre-stage 29 circuit is electrically connected to the enable terminal of the second connector 34, the output terminal, the output end of the processor unit 26 is electrically connected with the enable end of the digital-to-analog circuit 27, the output end of the digital-to-analog circuit 27 is electrically connected with the enable end of the numerical control boosting power supply 28, the output end of the numerical control boosting power supply 28 outputs 180-200V direct current to supply power to the piezoceramic wafer driving circuit 33 through the second connector 34, and the control signal of the processor unit 26 is transmitted to the piezoceramic wafer driving circuit 33 through the driving pre-stage 29 circuit and the second connector 34.

Referring to fig. 3, the relative positions of the circuit layout of the line protection circuit 23, the voltage regulator circuit 25, the communication detection circuit 24, the digitally controlled boost power supply 28, the digital-to-analog circuit 27, the processor unit 26, and the driver pre-stage 29 may be changed adaptively according to the size of the layout area in which the circuits can be laid on the surface of the main control circuit board 21.

Referring to fig. 4 and 5, the piezoceramic wafer driving circuit 33 includes a power VCC1, a resistor R1, a resistor R2, a resistor R3, a resistor R4, a resistor R5, a resistor R6, a transistor Q1, a transistor Q2, a transistor Q3, a transistor Q4, a diode D1, and a diode D2, which are input from the first connector 30.

Referring to fig. 5, one end of the resistor R1 is connected to a signal INPUT terminal INPUT, the other end of the resistor R1 is electrically connected to the base of the transistor Q2, the cathode of the diode D1 is connected in parallel to the collector of the transistor Q2, the collector of the transistor Q2 and the base of the transistor Q1 are connected in parallel to one end of the resistor R2, and the other end of the resistor R2 is connected in parallel to the collector of the transistor Q1.

Referring to fig. 5, one end of the resistor R3 is electrically connected to the output terminal OUT-a, and the other end of the resistor R3, the anode of the diode D1, and one end of the resistor R4 are connected in parallel to the emitter of the transistor Q1.

Referring to fig. 5, the other end of the resistor R4 is connected to the base of the diode Q4, the emitter of the transistor Q2 is connected in parallel with the emitter of the diode Q4 and grounded, the collector of the transistor Q1, one end of the resistor R5 and the collector of the transistor Q3 are respectively connected in parallel with the power source VCC1, and the other end of the resistor R5 is connected in parallel with the base of the transistor Q3.

Referring to fig. 5, the collector of the transistor Q4 and the base of the transistor Q3 are connected in parallel to the cathode of the diode D2, the anode of the diode D2 and one end of the resistor R6 are connected in parallel to the emitter of the transistor Q3, and the other end of the resistor R6 is electrically connected to the output terminal OUT-B.

Referring to fig. 5, the transistor Q1, the transistor Q2, the transistor Q3, and the transistor Q4 are NPN transistors. The collectors of transistor Q2 and transistor Q4 are connected in parallel to ground, as well as the negative terminal of power supply VCC 1.

Referring to fig. 5, the piezoceramic wafer driving circuit 33 acts on a piezoceramic element 35, the output terminal OUT-a is connected to one side surface of the piezoceramic element 35, the output terminal OUT-B is connected to the other side surface of the piezoceramic element 35, and the other end of the piezoceramic element 35 is connected in parallel with the negative electrode of the power supply VCC 1.

Referring to fig. 5, the circuit operation process of the present embodiment includes the following steps: the piezoelectric ceramic piece driving circuit 33 only has one INPUT end, two output ends of OUT-A and OUT-B, and the output end is connected with the piezoelectric ceramic element 35 and is used for driving the swinging action of the piezoelectric ceramic element 35. The piezoelectric ceramic element 35 can be equivalent to two capacitors, and in order to operate the piezoelectric ceramic element 35 normally, it is necessary to discharge while charging. The side charged by the piezoelectric ceramic element 35 is deformed and swings to one side.

Refer to fig. 5. In this embodiment, the square wave driving signal is INPUT to the INPUT and the precursor circuit, and the level of the square wave signal INPUT to the INPUT and the precursor circuit is opposite. For example, if the INPUT is high, then the predecessor INPUT is low, and vice versa. Thus, both output terminals are always in a state of being charged while being discharged, and the driving of the piezoelectric ceramic element 35 is completed.

The operation principle thereof will be explained below

1: when the INPUT is high, Q2 is on, the collector of Q1 is low, and Q1 is off. The output terminal discharges the capacitance at one terminal of the piezoelectric ceramic element 35 through R3, D1 and Q2. It is important to note that at the beginning of the discharge, D1 turns on and Q1 is in a reverse biased state, Q1 turns off quickly and is completely off, with little power consumption.

2: when INPUT is high, the precursor circuit is low, Q4 is off, and Q4 corresponds to an open circuit. At this time, the R4 is amplified by the Q3 current, and then charges the capacitor on the other side of the piezoelectric ceramic element 35 through R6. At this point Q4 is in the off state and there is little power consumption.

When the levels are opposite, the working process is exactly the same.

Compared with the prior art, the driving circuit has the advantages that circuit elements are few, only NPN transistors are used, the consistency is good during manufacturing, the cost is lower, only half of circuits work during working, the power consumption is lower than that of other driving circuits, and the reliability is good.

Through the circuit layout that sets up two diodes of four triode cooperations, can guarantee that the short circuit phenomenon can not appear in the power. The whole circuit has low power consumption, low heat productivity and simple circuit. The reliability of the piezoelectric ceramic piece driving circuit 33 can be greatly improved, the service lives of the piezoelectric ceramic piece driving circuit 33 and the jacquard guide bar are prolonged, and the repair cost is saved.

The occupied area is reduced by only arranging one input port, and the integration level of the piezoelectric ceramic piece driving circuit 33 on the second circuit board 32 is improved.

The output voltage of the digital control boosting power supply is set to be 200V, and the output voltage of the driving front stage is set to be 40V.

By arranging a numerical control boosting power supply to be matched with a driving front stage for use, and increasing a group of low electric driving voltages, on one hand, the positive driving voltage is counteracted, so that the voltage actually falling on two ends of the piezoelectric ceramic element 35 is reduced; on the other hand, it plays a reverse force, and is the same with positive force direction, and both dynamics add, and ultimate effect is to increase the swing dynamics, reaches the purpose of considering both extension performance and life-span. Therefore, the requirement of a customer on the performance of the jacquard guide bar can be met while the driving voltage of the piezoelectric ceramic element 35 is increased, the service life of the jacquard guide bar is effectively prolonged, and the use and production cost of the customer is reduced.

In the invention, the driving circuit board 31 and the main control circuit board 21 are arranged in a pluggable manner to form a double-layer circuit board structure, so that the electronic component with larger heat productivity is arranged on the main control circuit board 21, the electronic component with smaller heat productivity is arranged on the driving circuit board 31, on one hand, the driving circuit board unit 31 and the main control circuit board 21 are separately arranged, so that the heat generated by the main control circuit board 21 does not affect the normal operation of the driving circuit board 31, and the service life of the driving circuit board 31 is prolonged, and on the other hand, when one of the driving circuit board 31 or the main control circuit board 21 is damaged, only a single damaged driving circuit board 31 or main control circuit board 21 needs to be replaced by targeted plugging, the drive circuit board 31 and the main control circuit board 21 do not need to be replaced together, and the maintenance cost of replacing the drive circuit board 31 or the main control circuit board 21 in later maintenance is reduced.

The above description is only an embodiment of the present invention, but the design concept of the present invention is not limited thereto, and any insubstantial modifications made by using the design concept should fall within the scope of infringing the present invention.

Claims (10)

1. The utility model provides a wireless merchant blocks sley bar device which characterized in that: the heating element comprises at least one main control circuit board and at least one driving circuit board arranged on the main control circuit board, wherein the heating value of the main control circuit board is larger than that of the driving circuit board.

2. The wireless jacquard bar apparatus of claim 1, wherein: the drive circuit board is provided with a first connector, the main control circuit board is provided with a first end, the drive circuit board is provided with a second end, the main control circuit board is provided with a first connector, the first connector is used for connecting the main control circuit board and the drive circuit board, the first connector can be inserted into the drive circuit board, one end of the first connector is arranged on the main control circuit board, the other end of the first connector is arranged on the drive circuit board, and the output end of the main control circuit board is electrically connected with the enable end.

3. The wireless jacquard bar apparatus of claim 1, wherein: the driving circuit board comprises at least one second circuit board and a plurality of piezoelectric ceramic piece driving circuits arranged on the second circuit board, and the output end of each piezoelectric ceramic piece driving circuit is electrically connected with the enabling end of each piezoelectric ceramic element.

4. The wireless jacquard bar apparatus of claim 1, wherein: the driving circuit board is convex.

5. The wireless jacquard bar apparatus of claim 1, wherein: the guide bar base with drive circuit board is around constituting a first wind channel cavity, main control circuit board is located in the first wind channel cavity.

6. The wireless jacquard bar apparatus of claim 1, wherein: still include a connecting circuit board, connecting circuit board includes that a third circuit board, a plurality of interval are located slot on third circuit board one side and locating second connector on the third circuit board opposite side, the enable end of piezoceramics component is inserted and is established and install on the slot, the one end of second connector is located on the third circuit board, the other end of second connector is located on the dirver circuit board, make the third circuit board with pluggable electricity is connected between the dirver circuit board through setting up the second connector.

7. The wireless jacquard bar apparatus of claim 1, wherein: still include that one can dismantle the lid and establish the upper cover plate on the drive circuit board upside, the rear end orientation of upper cover plate a bellied extension that forms is extended to the rear of sley bar base.

8. The wireless jacquard bar apparatus of claim 1, wherein: still include one locate first mounting groove on sley bar base bottom, one locate thimble board in the first mounting groove and a plurality of roots locate thimble board messenger and serve, thimble board output with master control circuit board messenger end electricity is connected, the messenger of thimble holds the orientation the direction of sley bar bed extends.

9. A jacquard apparatus, characterized by: comprising at least one jacquard bar according to any one of claims 1 to 8.

10. A warp knitting machine characterized in that: comprising at least one jacquard bar according to any one of claims 1 to 8.

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