CN213172859U

CN213172859U - Through-shaft type single needle plate positive needling machine

Info

Publication number: CN213172859U
Application number: CN202021676487.2U
Authority: CN
Inventors: 杨长辉; 杨博
Original assignee: Guangdong Sanhui Nonwoven Machinery Co ltd
Current assignee: Guangdong Sanhui Nonwoven Machinery Co ltd; Guangdong Sanhui Nonwoven Technology Co ltd
Priority date: 2020-08-13
Filing date: 2020-08-13
Publication date: 2021-05-11
Anticipated expiration: 2030-08-13

Abstract

A through-shaft type single-needle-plate positive needling machine comprises a machine frame, a screen supporting plate, a screen stripping plate and a needling mechanism, wherein the needling mechanism comprises a needling driving device, a transmission shaft assembly, a pricking needle assembly and a plurality of balancing devices, the transmission shaft assembly is connected with the pricking needle assembly through a plurality of lifting transmission mechanisms, and the transmission shaft assembly comprises a straight shaft; the lifting transmission mechanism comprises a first eccentric wheel, a first rocker arm, a first guide sleeve and a push rod, and the first eccentric wheel is fixedly arranged on the straight shaft; the balancing device comprises a second eccentric wheel, a second guide sleeve, a second rocker arm, a guide rod and a balancing weight block, the second eccentric wheel is fixedly installed on the straight shaft, the eccentric direction of the second eccentric wheel is opposite to that of the first eccentric wheel, the upper end of the second rocker arm is sleeved on the second eccentric wheel, the guide rod is located in the second guide sleeve, the upper end of the guide rod is hinged with the lower end of the second rocker arm, and the balancing weight block is installed on the guide rod. The utility model discloses transmission shaft subassembly can keep steady operation when carrying out the acupuncture, effectively avoids just stinging the machine and produces violent vibration and rock.

Description

Through-shaft type single needle plate positive needling machine

Technical Field

The utility model relates to a needle loom, concretely relates to lead to positive thorn machine of shaft type single needle board.

Background

The needle punching method is one of the most main processing technologies of the non-woven fabric, and a needle punching machine is various in types, and a positive punching machine is one of the processes.

The positive needling machine generally comprises a frame, a net feeding mechanism, a net supporting plate, a net peeling plate, a needling mechanism and a drawing mechanism, wherein the net peeling plate is arranged above the net supporting plate, the needling mechanism is arranged above the net peeling plate, the net feeding mechanism is arranged in front of the net supporting plate, and the drawing mechanism is arranged behind the net supporting plate. The gap between the net supporting plate and the net peeling plate can be used for the fiber web to pass through, and the gap between the net supporting plate and the net peeling plate and the area corresponding to the needling mechanism form a needling area. The net feeding mechanism feeds the fiber net between the net supporting plate and the net stripping plate, the needle punching mechanism performs repeated needle punching on the fiber net to enable the fluffy fiber net to be consolidated, and the needled fiber net is output from a needle punching area by the drawing mechanism. The needling mechanism is a key component of the positive needling machine. Generally, the higher the number of needle punching times per unit time (i.e., the higher the needle punching frequency) of the needle punching mechanism, the higher the needle punching density (the number of needle punching per unit area), the better the quality of the obtained web, and the higher the production efficiency. Therefore, the magnitude of the needling frequency is one of the important factors affecting the product quality.

In the existing single-needle-plate forward needling machine, a needling mechanism generally comprises a needling driving device, a transmission shaft assembly and a needle component, wherein the transmission shaft assembly is rotatably arranged on a rack and is in transmission connection with the needling driving device, and the transmission shaft assembly is connected with the needle component through a plurality of lifting transmission mechanisms; the transmission shaft assembly comprises a left half shaft, a right half shaft and a plurality of crankshafts sequentially connected between the left half shaft and the right half shaft; the crankshaft comprises two shaft heads and a boss which are integrally connected, the two shaft heads are respectively arranged on the left side and the right side of the boss, the axes of the two shaft heads are coincident, and the boss is cylindrical and the center line of the boss deviates from the axis of the shaft head; the axis of each shaft head, the axis of the left half shaft and the axis of the right half shaft are coincident; the lifting transmission mechanism comprises a rocker arm, a push rod and a guide sleeve, the upper part and the lower part of the guide sleeve are vertically arranged on the rack, the push rod is arranged in the guide sleeve, the upper end of the rocker arm is sleeved on a boss of the corresponding crank shaft, the lower end of the rocker arm is hinged with the upper end of the push rod, and the lower end of the push rod is connected with the pricking pin component. The needle assembly typically includes a needle bar fixedly mounted to and below the needle bar, a needle plate on a lower surface of the needle plate (the needles are typically evenly spaced on the lower surface of the needle plate), and a plurality of needles coupled to the push rod. In the needling mechanism, the needling driving device drives the transmission shaft assembly to rotate, each crankshaft on the transmission shaft assembly rotates (the boss of each crankshaft rotates around two shaft heads of the crankshaft) when the transmission shaft assembly rotates, the rocker arm drives the push rod to do vertical reciprocating linear motion along the guide sleeve, and the push rod drives the needling assembly to do vertical reciprocating linear motion, so that repeated needling is carried out on the fiber web, and the fluffy fiber web is solidified under the action of needling.

However, when the single-needle-plate positive needling machine performs needling, because the self weights of each lifting transmission mechanism and each needle component are heavier, the transmission shaft component can generate strong inertia force during operation, so that the single-needle-plate positive needling machine generates violent vibration and shaking and generates great noise; the single needle plate positive needling machine generates violent vibration and shaking during working, and the quality and the yield of the needled products are seriously influenced. In addition, the transmission shaft assembly is provided with a plurality of crankshafts sequentially connected between the left half shaft and the right half shaft, each crankshaft comprises two shaft heads and one boss which are integrally connected, the structure is complex, the manufacturing difficulty is high, the manufacturing cost is high, and the outlines of all the bosses are difficult to ensure to be completely overlapped due to the installation precision and other reasons, so that the motion synchronism of each lifting transmission mechanism is difficult to ensure in the actual work process, and the sprain of a needle beam in the puncture needle assembly is often caused.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a lead to positive thorn machine of shaft type single needle board is provided, this kind leads to positive thorn machine of shaft type single needle board can keep steady operation when carrying out the acupuncture drive shaft subassembly, effectively avoids producing violent vibration and rocking at the during operation, ensures the quality and the output of acupuncture product to noise abatement. The technical scheme is as follows:

a through-shaft type single-needle-plate positive needling machine comprises a machine frame, a screen supporting plate, a screen stripping plate and a needling mechanism, wherein the screen stripping plate, the screen supporting plate and the needling mechanism are all arranged on the machine frame, the screen stripping plate is positioned above the screen supporting plate, and the needling mechanism is positioned above the screen stripping plate; acupuncture mechanism includes acupuncture drive arrangement, transmission shaft subassembly and felting needle subassembly, and transmission shaft subassembly rotatable installation in the frame and with acupuncture drive arrangement transmission connection, transmission shaft subassembly is connected its characterized in that through a plurality of lift drive mechanism and felting needle subassembly: the transmission shaft assembly comprises a straight shaft with the axis in the left-right direction; the lifting transmission mechanism comprises a first eccentric wheel, a first rocker arm, a first guide sleeve and a push rod, the first eccentric wheel is fixedly arranged on a straight shaft, the upper end of the first rocker arm is sleeved on the first eccentric wheel, the first guide sleeve is fixedly arranged on the rack and moves up and down, the push rod is positioned in the first guide sleeve, the upper end of the push rod is hinged with the lower end of the first rocker arm, and the lower end of the push rod is connected with the pricking pin assembly; the needling mechanism further comprises a plurality of balancing devices, the balancing devices are sequentially arranged along the axial direction of the straight shaft and comprise a second eccentric wheel, a second guide sleeve, a second rocker arm, a guide rod and a balancing weight block, the second eccentric wheel is fixedly arranged on the straight shaft, the eccentric direction of the second eccentric wheel is opposite to that of the first eccentric wheel, the upper end of the second rocker arm is sleeved on the second eccentric wheel, the second guide sleeve is fixedly arranged on the rack and moves up and down, the guide rod is positioned in the second guide sleeve, the upper end of the guide rod is hinged to the lower end of the second rocker arm, and the balancing weight block is arranged on the guide rod.

The utility model discloses in, the eccentric opposite direction of second eccentric wheel and first eccentric wheel means the biggest point of first footpath of second eccentric wheel and the biggest point of first footpath of first eccentric wheel 180 degrees of staggering each other in the circumference of straight axle.

Generally, the total weight of each balancing weight is equivalent to the weight of the needle assembly; the eccentric directions of the first eccentrics are the same (i.e. the profiles of the first eccentrics completely coincide in the axial direction of the straight shaft), and the eccentric directions of the second eccentrics are the same (i.e. the profiles of the second eccentrics completely coincide in the axial direction of the straight shaft).

In the through-shaft type single-needle-plate needling machine, the gap between the screen supporting plate and the screen stripping plate can be used for the fiber web to pass through, the screen supporting plate and the screen stripping plate limit the fiber web together, and the gap between the screen supporting plate and the screen stripping plate and the area corresponding to the needling mechanism form a needling area. For the fiber web with larger width, a web feeding mechanism is usually arranged in front of the web supporting plate, and a drawing mechanism is usually arranged behind the web supporting plate; the net feeding mechanism feeds the fiber web to the needle punching area, the needle punching mechanism performs repeated needle punching on the fiber web to enable the fluffy fiber web to be consolidated, and the needled fiber web is output from the needle punching area by the drawing mechanism.

When the needling mechanism performs needling, the transmission shaft component is driven by the needling driving device to rotate, the first eccentric wheels of each lifting transmission mechanism are driven by the straight shaft to rotate, the corresponding push rods are driven by the corresponding first rocker arms to reciprocate along the corresponding first guide sleeves, the needle component is driven to perform lifting motion, repeated needling is performed on the fiber web, and the fluffy fiber web is consolidated under the action of the needling; meanwhile, the second eccentric wheels of the balancing devices rotate under the driving of the straight shaft, and the second eccentric wheels drive the guide rod and the balancing weights to do reciprocating lifting motion along the second guide sleeve through the second rocker arms. Because the eccentric direction of the second eccentric wheel is opposite to that of the first eccentric wheel, and the total weight of each balancing weight block is equivalent to the weight of the pricking pin component, therefore, the inertia force of the pushing rod and the pricking pin component which are driven by the first eccentric wheel of each lifting transmission mechanism to do reciprocating lifting motion along the first guide sleeve can be offset by the inertia force of the second eccentric wheel of each balancing device which drives the guide rod and the balancing weight block to do reciprocating lifting motion along the second guide sleeve through the second rocker arm, and each balancing device and each lifting transmission mechanism are sequentially arranged along the axial direction of the straight shaft, so that the stress of each position of the straight shaft is uniform, the transmission shaft component can be ensured to stably operate, severe vibration and shaking generated during working are effectively avoided, the quality and the yield of a pricking product are ensured, and the noise is reduced. In addition, the transmission shaft assembly adopts a through shaft type structure, so that the structure is simple, the manufacturing difficulty is low, the manufacturing cost can be effectively reduced, the eccentric directions of the first eccentric wheels are easy to be the same when the first eccentric wheels are arranged on the transmission shaft assembly (namely the outlines of the first eccentric wheels are completely overlapped in the axial direction of the straight shaft), the motion of each lifting transmission mechanism can be ensured to keep synchronism, and the sprain of a needle beam in the pricking pin assembly is avoided.

In a preferable scheme, the number of the lifting transmission mechanisms in the needling mechanism is more than or equal to 3, the number of the balancing devices is less than 1, and the lifting transmission mechanisms and the balancing devices are alternately arranged along the axial direction of the straight shaft.

In another preferred embodiment, the number of the lifting transmission mechanisms in the needling mechanism is two, and the number of the balancing devices is also two. In this case, the two balancing devices may be disposed between the two lifting transmission mechanisms, the two lifting transmission mechanisms may be disposed between the two balancing devices, or the lifting transmission mechanisms and the balancing devices may be alternately arranged in the axial direction of the straight shaft.

In a preferable scheme, the lower end of the guide rod is arranged in the second guide sleeve, and the balancing weight block is arranged on the middle part of the guide rod.

In a more preferable scheme, a supporting circular truncated cone with a small upper part and a large lower part is arranged in the middle of the guide rod, a circular truncated cone-shaped mounting hole with a small upper part and a large lower part is arranged in the middle of the balancing weight block, the circular truncated cone-shaped mounting hole is matched with the supporting circular truncated cone, and the supporting circular truncated cone is positioned in the circular truncated cone-shaped mounting hole and clings to the inner wall of the circular truncated cone-; the guide rod is sleeved with a locking ring, the locking ring is positioned at the lower side of the supporting circular truncated cone and is connected with the balancing weight block through a connecting piece (such as a bolt), and the upper side surface of the locking ring is tightly attached to the bottom of the supporting circular truncated cone. Adopt this kind of structure not only can conveniently install the balancing weight piece on the guide arm, can prevent the balancing weight piece dislocation moreover well. In the in-service use process, can conveniently change the balancing weight piece of different weights according to design parameter and on-the-spot debugging result.

In a preferable scheme, the transmission shaft assembly further comprises a left half shaft, a right half shaft, a left coupling flywheel and a right coupling flywheel, wherein the left half shaft and the right half shaft can be rotatably mounted on the rack, the axes of the left half shaft and the right half shaft are coincident with the axis of the straight shaft, the right end of the left half shaft is fixedly connected with the left end of the straight shaft through the left coupling flywheel, and the left end of the right half shaft is fixedly connected with the right end of the straight shaft through the right coupling flywheel; the left half shaft or the right half shaft is in transmission connection with the power output end of the acupuncture driving device. The left coupling flywheel and the right coupling flywheel are disc-shaped parts with large rotational inertia, and are used for storing energy to increase the rotational inertia and enable the transmission shaft assembly to rotate more stably.

In a more preferable scheme, the needling driving device comprises a needling driving motor, a driving pulley, a driven pulley and an annular synchronous belt, wherein the needling driving motor is installed on the rack, the driving pulley is installed on a power output shaft of the needling driving motor, the driven pulley is installed on the left half shaft or the right half shaft, and the driving pulley and the driven pulley jointly tension the annular synchronous belt.

In a preferred scheme, a plurality of bearing seats are sequentially arranged along the axial direction of the straight shaft on the rack, and each bearing seat is connected with a corresponding part of the straight shaft through a bearing. Like this, each bearing frame of accessible supports the straight axle jointly, can avoid the straight axle to appear warping because of bearing a burden is too big, effectively prolongs its life.

In a preferred embodiment, the straight shaft is fixedly provided with a plurality of dynamic balance wheels, and the dynamic balance wheels are sequentially arranged along the axial direction of the straight shaft. In a more preferable scheme, the dynamic balance wheels are the same in number and correspond to the balance devices one by one, and the dynamic balance wheels are positioned on the left side or the right side of the second eccentric wheel in the corresponding balance devices. Therefore, the plurality of dynamic balance wheels are arranged on the straight shaft, and each dynamic balance wheel is driven by the straight shaft to rotate, so that the stress of each position of the straight shaft is more uniform, the stability of the gravity center position of the straight shaft is enhanced, and the straight shaft can better keep stable operation.

In a more preferable scheme, the dynamic balance wheel comprises a wheel body and a balancing weight, a mounting hole is formed in the center of the wheel body, and the wheel body is fixedly mounted on the straight shaft through the mounting hole; the wheel body is provided with a mounting groove, the mounting groove is positioned on one side of the mounting hole, and the balancing weight is mounted in the mounting groove. Therefore, the gravity center position of the dynamic balance wheel can be eccentrically arranged, and the inertia force generated by each first eccentric wheel and each second eccentric wheel can be further ensured to be offset.

In a further preferred scheme, the balancing weight is installed in the installation groove through a detachable connection structure. The detachable connecting structure can be a bolt connecting structure, the bolt connecting structure comprises a bolt, a nut and a second through hole, the first through hole is formed in the wheel body, the second through hole is formed in the counterweight block, a screw rod of the bolt sequentially penetrates through the first through hole, the second through hole and the nut to be meshed, and the head of the bolt and the nut clamp the wheel body and the counterweight block together. According to the field debugging effect, change the balancing weight, need not to change whole dynamic balance wheel for the correction of dynamic balance, regulation convenient and fast can reach the balanced effect of preferred, make needle loom during operation steady, low noise.

In a preferable scheme, the needling mechanism further comprises a control circuit, a detection device for detecting whether the first eccentric wheel reaches a top dead center, and a resistance mechanism capable of applying resistance to the transmission shaft assembly, wherein the detection device is electrically connected with a corresponding input end of the control circuit, and the resistance mechanism is electrically connected with a corresponding output end of the control circuit. After the acupuncture mechanism stops working, the control circuit applies a certain resistance to the transmission shaft assembly through the resistance mechanism, so that the rotation speed of the transmission shaft assembly is gradually reduced; and when the rotating speed of the transmission shaft assembly is slow and the detection device detects that the first eccentric wheel reaches the top dead center, the detection device sends a signal to the control circuit, the control circuit stops the transmission shaft assembly immediately through the resistance mechanism, and each first eccentric wheel stays at the top dead center, so that each needle of the needle assembly can be completely separated from the fiber web.

In a more preferable scheme, the detection device is a photoelectric eye, and the photoelectric eye is mounted on the frame and corresponds to the top dead center position of the first eccentric wheel; the resistance mechanism is gasbag formula band-type brake stopper, and gasbag formula band-type brake stopper is installed in the frame, the transmission shaft subassembly is in each friction disc of gasbag formula band-type brake stopper inboard. The specific structure of the above-mentioned gasbag formula band-type brake can refer to utility model patent specification with application number CN 201020124119.7.

The needle assembly typically includes a needle bar fixedly mounted to and below the needle bar, a needle plate on a lower surface of the needle plate (the needles are typically evenly spaced on the lower surface of the needle plate), and a plurality of needles coupled to the push rod. The net supporting plate and the net peeling plate are both provided with through holes for the puncture needles of the puncture mechanism to pass through.

The utility model discloses a lead to acupuncture mechanism in shaft type single needle board positive thorn machine when carrying out the acupuncture, because each lifting transmission mechanism's first eccentric wheel drives push rod and felting needle subassembly through first rocking arm and does reciprocating elevating movement's inertial force along first uide bushing, all can be driven guide arm and balanced balancing weight along the inertial force that reciprocating elevating movement was done to the second uide bushing through the second rocking arm by each balancing unit's second eccentric wheel and offset, and with each balancing unit, each lifting transmission mechanism arranges along the axial of straight axle in proper order, each position atress that can make the straight axle is comparatively even, thereby ensure that the transmission shaft subassembly can keep steady operation, effectively avoid producing violent vibration and rocking at the during operation, ensure the quality and the output of acupuncture product, and the noise abatement. In addition, the transmission shaft assembly adopts a through shaft type structure, so that the structure is simple, the manufacturing difficulty is low, the manufacturing cost can be effectively reduced, the eccentric directions of the first eccentric wheels are easy to be the same when the first eccentric wheels are arranged on the transmission shaft assembly (namely the outlines of the first eccentric wheels are completely overlapped in the axial direction of the straight shaft), the motion of each lifting transmission mechanism can be ensured to keep synchronism, and the sprain of a needle beam in the pricking pin assembly is avoided.

Drawings

Fig. 1 is a schematic structural diagram of a preferred embodiment of the present invention.

Fig. 2 is a right side view of fig. 1.

Fig. 3 is an enlarged view of fig. 2 at a.

Fig. 4 is a schematic structural view of the dynamic balance wheel.

Detailed Description

As shown in fig. 1 and 2, the through-shaft type single-needle-plate positive needling machine comprises a frame 1, a screen supporting plate 2, a screen stripping plate 3 and a needling mechanism 4, wherein the screen stripping plate 3, the screen supporting plate 2 and the needling mechanism 4 are all arranged on the frame 1, the screen stripping plate 3 is arranged above the screen supporting plate 2, and the needling mechanism 4 is arranged above the screen stripping plate 3; the acupuncture mechanism 4 comprises an acupuncture driving device 41, a transmission shaft assembly 42, an acupuncture needle assembly 43, a plurality of lifting transmission mechanisms 44 and a plurality of balancing devices 45, wherein the transmission shaft assembly 42 is rotatably arranged on the machine frame 1 and is in transmission connection with the acupuncture driving device 41, and the transmission shaft assembly 42 is connected with the acupuncture needle assembly 43 through each lifting transmission mechanism 44; the transmission shaft assembly 42 comprises a straight shaft 421 with the axis in the left-right direction; the lifting transmission mechanism 44 comprises a first eccentric wheel 441, a first rocker arm 442, a first guide sleeve 443 and a push rod 444, the first eccentric wheel 441 is fixedly mounted on the straight shaft 421, the upper end of the first rocker arm 442 is sleeved on the first eccentric wheel 441, the first guide sleeve 443 is fixedly mounted on the frame 1 and moves up and down, the push rod 444 is located in the first guide sleeve 443, the upper end of the push rod 444 is hinged with the lower end of the first rocker arm 442, and the lower end of the push rod 444 is connected with the pricking pin assembly 43; the balancing devices 45 are arranged in sequence along the axial direction of the straight shaft 421, the balancing devices 45 include a second eccentric wheel 451, a second guide sleeve 452, a second rocker arm 453, a guide rod 454 and a balancing weight 455, the second eccentric wheel 451 is fixedly installed on the straight shaft 421, the eccentric direction of the second eccentric wheel 451 is opposite to that of the first eccentric wheel 441, the upper end of the second rocker arm 453 is sleeved on the second eccentric wheel 451, the second guide sleeve 452 is fixedly installed on the frame 1 and runs up and down, the guide rod 454 is located in the second guide sleeve 452, the upper end of the guide rod 454 is hinged with the lower end of the second rocker arm 453, and the balancing weight 455 is installed on the guide rod 454 (the total weight of each balancing weight 455 is equivalent to the weight of the needle assembly 43).

In this embodiment, the number of the lifting transmission mechanisms 44 in the needling mechanism 4 is greater than or equal to 3, the number of the balancing devices 45 is less than 1 of the lifting transmission mechanisms 44, and each lifting transmission mechanism 44 and each balancing device 45 are alternately arranged along the axial direction of the straight shaft 421.

In this embodiment, the transmission shaft assembly 42 further includes a left half shaft 422, a right half shaft 423, a left coupling flywheel 424 and a right coupling flywheel 425, the left half shaft 422 and the right half shaft 423 are both rotatably mounted on the frame 1, the axes of the left half shaft 422 and the right half shaft 423 are coincident with the axis of the straight shaft 421, the right end of the left half shaft 422 is fixedly connected with the left end of the straight shaft 421 through the left coupling flywheel 424, and the left end of the right half shaft 423 is fixedly connected with the right end of the straight shaft 421 through the right coupling flywheel 425; the needle punching driving device 41 comprises a needle punching driving motor 411, a driving pulley 412, a driven pulley 413 and an annular synchronous belt 414, wherein the needle punching driving motor 411 is installed on the machine frame 1, the driving pulley 412 is installed on a power output shaft of the needle punching driving motor 411, the driven pulley 413 is installed on a left half shaft 422, and the driving pulley 412 and the driven pulley 413 jointly tension the annular synchronous belt 414.

In this embodiment, the needle assembly 43 includes a needle beam 431, a needle plate 432 and a plurality of needles 433, the needle plate 432 is fixedly mounted on the needle beam 431 and below the needle beam 431, the needles 433 are disposed on a lower surface of the needle plate 432 (the needles 433 are evenly distributed on the lower surface of the needle plate 432), wherein the needle beam 431 is connected with the push rod 444. The net supporting plate 2 and the net peeling plate 3 are both provided with through holes through which the felting needles 433 of the needling mechanism 4 can pass.

In this embodiment, a plurality of bearing blocks 11 are mounted on the frame 1 and sequentially arranged in the axial direction of the straight shaft 421, and each bearing block is connected to a corresponding portion of the straight shaft 421 through a bearing. Thus, the straight shaft 421 can be supported by each bearing seat, thereby avoiding the deformation of the straight shaft 421 due to the overlarge load and effectively prolonging the service life of the straight shaft.

The acupuncture mechanism 4 further includes a control circuit (not shown), a detecting device (not shown) for detecting whether the first eccentric wheel 441 reaches the top dead center, and a resistance mechanism 46 capable of applying a resistance to the transmission shaft assembly 42, wherein the detecting device is electrically connected to a corresponding input end of the control circuit, and the resistance mechanism 46 is electrically connected to a corresponding output end of the control circuit. In the present embodiment, the detecting device is a photoelectric eye, and the photoelectric eye is mounted on the frame 1 and corresponds to the top dead center position of the first eccentric wheel 441; the resistance mechanism 46 is an airbag type band-type brake which is installed on the frame 1, and the right half shaft 423 is located on the inner side of each friction plate of the airbag type band-type brake.

Referring to fig. 3, in the present embodiment, the lower end of the guide rod 454 is in the second guide sleeve 452, and the balancing weight 455 is installed on the middle of the guide rod 454; a supporting round table 4541 with a small upper part and a large lower part is arranged in the middle of the guide rod 454, a round table-shaped mounting hole 4551 with a small upper part and a large lower part is arranged in the middle of the balancing weight block 455, the round table-shaped mounting hole 4551 is matched with the supporting round table 4541, and the supporting round table 4541 is positioned in the round table-shaped mounting hole 4551 and clings to the inner wall of the round table-shaped mounting hole 4551; the guide rod 454 is sleeved with a locking ring 4542, the locking ring 4542 is arranged on the lower side of the supporting round platform 4541 and is connected with the balancing weight block 455 through a bolt, and the upper side of the locking ring 4542 is tightly attached to the bottom of the supporting round platform 4541.

Referring to fig. 1 and 4, a plurality of dynamic balance wheels 47 are fixedly mounted on the straight shaft 421, and the dynamic balance wheels 47 are sequentially arranged along the axial direction of the straight shaft 421; the dynamic balance wheels 47 are in the same number and correspond to the balance devices 45 one by one, and the dynamic balance wheels 47 are positioned on the left side or the right side of the second eccentric wheel 451 in the corresponding balance devices 45. In this embodiment, the dynamic balance wheel 47 includes a wheel body 471 and a counterweight 472, a mounting hole 4711 is disposed at a central position of the wheel body 471, and the wheel body 471 is fixedly mounted on the straight shaft 421 through the mounting hole 4711; the wheel 471 is provided with a mounting groove 4712, the mounting groove 4712 is located at one side of the mounting hole 4711, and the counterweight 472 is mounted in the mounting groove 4712 through a bolt connecting structure 473.

The working principle of the through-shaft type single-needle-plate positive needling machine is briefly described as follows:

in the through-shaft type single-needle-plate needling machine, the gap between the screen supporting plate 2 and the screen stripping plate 3 can be used for a fiber web to pass through, the screen supporting plate 2 and the screen stripping plate 3 limit the fiber web together, and the gap between the screen supporting plate 2 and the screen stripping plate 3 and the area corresponding to the needling mechanism 4 form a needling area. When the needling mechanism 4 performs needling, the transmission shaft assembly 42 is driven by the needling driving device 41 to rotate, the first eccentric wheel 441 of each lifting transmission mechanism 44 is driven by the straight shaft 421 to rotate, the corresponding push rod 444 is driven by the corresponding first rocker arm 442 to reciprocate along the corresponding first guide sleeve 443 to drive the needle assembly 43 to perform lifting motion, so as to perform repeated needling on the fiber web, and the fluffy fiber web is consolidated through the needling; meanwhile, the second eccentric wheel 451 of each balancing device 45 is driven by the straight shaft 421 to rotate, and the second eccentric wheel 451 drives the guide rod 454 and the balancing weight 455 to reciprocate along the second guide sleeve 452 via the second rocker arm 453; at this time, the inertia force of the first eccentric wheel 441 of each lifting transmission mechanism 44 driving the push rod 444 and the needle assembly 43 to reciprocate along the first guide sleeve 443 via the first rocker arm 442 is offset by the inertia force of the second eccentric wheel 451 of each balancing device 45 driving the guide rod 454 and the balancing weight 455 to reciprocate along the second guide sleeve 452 via the second rocker arm 453, so as to ensure that the transmission shaft assembly 42 can keep stable operation, effectively avoid the generation of violent vibration and shaking during operation, ensure the quality and yield of acupuncture products, and reduce noise.

After the acupuncture mechanism 4 stops working, the control circuit applies a certain resistance to the transmission shaft assembly 42 through the resistance mechanism 46, so that the rotation speed of the transmission shaft assembly is gradually reduced; until the detecting means detects that the first eccentric 441 reaches the top dead center when the rotation speed of the driving shaft assembly 42 is slow, the detecting means sends a signal to the control circuit, and the control circuit stops the driving shaft assembly 42 immediately through the resistance mechanism 46 so that each first eccentric 441 stays at the top dead center, thereby ensuring that each lancet 433 of the lancet assembly 43 is completely separated from the web.

In addition, it should be noted that the names of the parts and the like of the embodiments described in the present specification may be different, and all the equivalent or simple changes made according to the structure, the features and the principle of the present invention are included in the protection scope of the present invention. Various modifications, additions and substitutions may be made by those skilled in the art without departing from the scope of the invention as defined in the accompanying claims.

Claims

1. A through-shaft type single-needle-plate positive needling machine comprises a machine frame, a screen supporting plate, a screen stripping plate and a needling mechanism, wherein the screen stripping plate, the screen supporting plate and the needling mechanism are all arranged on the machine frame, the screen stripping plate is positioned above the screen supporting plate, and the needling mechanism is positioned above the screen stripping plate; acupuncture mechanism includes acupuncture drive arrangement, transmission shaft subassembly and felting needle subassembly, and transmission shaft subassembly rotatable installation in the frame and with acupuncture drive arrangement transmission connection, transmission shaft subassembly is connected its characterized in that through a plurality of lift drive mechanism and felting needle subassembly: the transmission shaft assembly comprises a straight shaft with the axis in the left-right direction; the lifting transmission mechanism comprises a first eccentric wheel, a first rocker arm, a first guide sleeve and a push rod, the first eccentric wheel is fixedly arranged on a straight shaft, the upper end of the first rocker arm is sleeved on the first eccentric wheel, the first guide sleeve is fixedly arranged on the rack and moves up and down, the push rod is positioned in the first guide sleeve, the upper end of the push rod is hinged with the lower end of the first rocker arm, and the lower end of the push rod is connected with the pricking pin assembly; the needling mechanism further comprises a plurality of balancing devices, the balancing devices are sequentially arranged along the axial direction of the straight shaft and comprise a second eccentric wheel, a second guide sleeve, a second rocker arm, a guide rod and a balancing weight block, the second eccentric wheel is fixedly arranged on the straight shaft, the eccentric direction of the second eccentric wheel is opposite to that of the first eccentric wheel, the upper end of the second rocker arm is sleeved on the second eccentric wheel, the second guide sleeve is fixedly arranged on the rack and moves up and down, the guide rod is positioned in the second guide sleeve, the upper end of the guide rod is hinged to the lower end of the second rocker arm, and the balancing weight block is arranged on the guide rod.

2. The through-shaft single-needle-plate positive needling machine according to claim 1, characterized in that: the number of the lifting transmission mechanisms in the needling mechanism is more than or equal to 3, the number of the balancing devices is less than 1 of the lifting transmission mechanisms, and the lifting transmission mechanisms and the balancing devices are alternately arranged along the axial direction of the straight shaft.

3. The through-shaft single-needle-plate positive needling machine according to claim 1, characterized in that: the lower end of the guide rod is positioned in the second guide sleeve, and the balancing weight block is arranged on the middle part of the guide rod.

4. The through-shaft single-needle-plate positive needling machine according to claim 3, characterized in that: the middle part of the guide rod is provided with a supporting circular truncated cone with a small upper part and a large lower part, the middle part of the balancing weight block is provided with a circular truncated cone-shaped mounting hole with a small upper part and a large lower part, the circular truncated cone-shaped mounting hole is matched with the supporting circular truncated cone, and the supporting circular truncated cone is positioned in the circular truncated cone-shaped mounting hole and clings to the inner wall of the circular truncated cone; the guide rod is sleeved with a locking ring, the locking ring is positioned at the lower side of the supporting circular truncated cone and is connected with the balancing weight block through a connecting piece, and the upper side surface of the locking ring is tightly attached to the bottom of the supporting circular truncated cone.

5. The through-shaft single-needle-plate positive needling machine according to claim 1, characterized in that: the transmission shaft assembly further comprises a left half shaft, a right half shaft, a left coupling flywheel and a right coupling flywheel, the left half shaft and the right half shaft can be rotatably mounted on the rack, the axes of the left half shaft and the right half shaft are coincident with the axis of the straight shaft, the right end of the left half shaft is fixedly connected with the left end of the straight shaft through the left coupling flywheel, and the left end of the right half shaft is fixedly connected with the right end of the straight shaft through the right coupling flywheel; the left half shaft or the right half shaft is in transmission connection with the power output end of the acupuncture driving device.

6. The through-shaft single-needle-plate positive needling machine according to any one of claims 1 to 5, characterized in that: the rack is provided with a plurality of bearing seats which are sequentially arranged along the axial direction of the straight shaft, and each bearing seat is respectively connected with the corresponding part of the straight shaft through a bearing.

7. The through-shaft single-needle-plate positive needling machine according to any one of claims 1 to 5, characterized in that: a plurality of dynamic balance wheels are fixedly mounted on the straight shaft, and the dynamic balance wheels are sequentially arranged along the axial direction of the straight shaft.

8. The through-shaft single-needle-plate positive needling machine according to claim 7, characterized in that: the dynamic balance wheels are in the same number and correspond to the balance devices one by one, and the dynamic balance wheels are positioned on the left side or the right side of the second eccentric wheel in the corresponding balance devices.

9. The through-shaft single-needle-plate positive needling machine according to claim 7, characterized in that: the dynamic balance wheel comprises a wheel body and a balancing weight, a mounting hole is formed in the center of the wheel body, and the wheel body is fixedly mounted on the straight shaft through the mounting hole; the wheel body is provided with a mounting groove, the mounting groove is positioned on one side of the mounting hole, and the balancing weight is mounted in the mounting groove.

10. The through-shaft single-needle-plate positive needling machine according to any one of claims 1 to 5, characterized in that: the needling mechanism further comprises a control circuit, a detection device and a resistance mechanism, wherein the detection device is used for detecting whether the first eccentric wheel reaches a top dead center, the resistance mechanism can apply resistance to the transmission shaft assembly, the detection device is electrically connected with the corresponding input end of the control circuit, and the resistance mechanism is electrically connected with the corresponding output end of the control circuit.