CN212955621U - Through-shaft type double-needle-plate barb machine - Google Patents

Through-shaft type double-needle-plate barb machine Download PDF

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Publication number
CN212955621U
CN212955621U CN202021684210.4U CN202021684210U CN212955621U CN 212955621 U CN212955621 U CN 212955621U CN 202021684210 U CN202021684210 U CN 202021684210U CN 212955621 U CN212955621 U CN 212955621U
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dynamic balance
shaft
transmission shaft
transmission
central shaft
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杨长辉
杨博
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Guangdong Sanhui Nonwoven Machinery Co ltd
Guangdong Sanhui Nonwoven Technology Co ltd
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Guangdong Sanhui Nonwoven Machinery Co ltd
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Abstract

A through-shaft type double-needle-plate barb machine comprises a machine frame, a screen supporting plate, a screen stripping plate and a needling mechanism, wherein the screen stripping plate is positioned below the screen supporting plate, and the needling mechanism is positioned below the screen stripping plate; the needling mechanism comprises a needling driving device, two transmission shaft assemblies which are arranged side by side in front and back and two pricking needle assemblies which are arranged side by side in front and back, the rotating speeds of the two transmission shaft assemblies are the same, and the rotating directions of the two transmission shaft assemblies are opposite; the transmission shaft assembly comprises a central shaft, a plurality of eccentric wheels and a plurality of dynamic balance wheel sets, wherein the eccentric wheels and the dynamic balance wheel sets are fixed on the central shaft; the dynamic balance wheel set comprises at least one dynamic balance wheel with the gravity center position deviating from the central shaft, and the gravity center deviation direction of the dynamic balance wheel is opposite to the gravity center deviation direction of the eccentric wheel. 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 at the during operation.

Description

Through-shaft type double-needle-plate barb machine
Technical Field
The utility model relates to a needle loom, concretely relates to lead to shaft type double needle board barb machine.
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 barb machine is one of the types.
The barb machine generally comprises a machine frame, a net feeding mechanism, a net supporting plate, a net stripping plate, a needling mechanism and a traction mechanism, wherein the net stripping plate is positioned below the net supporting plate, the needling mechanism is positioned below the net stripping plate, the net feeding mechanism is arranged in front of the net supporting plate, and the traction 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 barb 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 double-needle plate barb machine, a needling mechanism generally comprises a needling driving device, two transmission shaft assemblies which are arranged side by side from front to back and two pricking needle assemblies which are arranged side by side from front to back, wherein the two transmission shaft assemblies can be rotatably arranged on a rack and are in transmission connection with the needling driving device; the transmission shaft assembly comprises a central shaft and a plurality of eccentric wheels fixed on the central shaft, the central shaft is rotatably arranged on the rack (usually, two ends of the central shaft are respectively connected with the rack through bearings), and the eccentric wheels and the lifting transmission mechanisms are the same in number and are in one-to-one correspondence; 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 fixed on the frame, the lower end of the rocker arm is sleeved on an eccentric wheel (usually sleeved on the eccentric wheel through a bearing), the upper end of the rocker arm is hinged with the lower end of the push rod, the upper end of the push rod is connected with a pricking needle assembly, and the push rod is arranged in the guide sleeve. The lancet assembly typically includes a needle bar fixedly mounted on and above the needle bar, a needle plate on an upper surface of the needle plate (the needles are typically evenly distributed on the upper surface of the needle plate), and a plurality of lancets, wherein the needle bar is coupled to the pusher. In the needling mechanism, two transmission shaft assemblies are driven by a needling driving device to rotate relatively at the same rotating speed, each eccentric wheel on the central shaft rotates when the central shaft rotates, the eccentric wheel drives a push rod to do vertical reciprocating linear motion through a rocker arm, the push rod drives a needling assembly to do vertical reciprocating linear motion, so that the fiber web is repeatedly needled, and the fluffy fiber web is consolidated under the action of needling; the double-needle plate barb machine produces violent vibration and shaking during working, and the quality and the yield of the needled product are seriously influenced.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a lead to shaft type double needle board barb machine is provided, this kind of lead to shaft type double needle board barb machine transmission shaft subassembly can keep steady operation when carrying out the acupuncture, 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 double-needle plate barb machine comprises a rack, 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 rack, the screen stripping plate is positioned below the screen supporting plate, and the needling mechanism is positioned below the screen stripping plate; the needling mechanism comprises a needling driving device, two transmission shaft assemblies which are arranged side by side in the front and back direction and two pricking needle assemblies which are arranged side by side in the front and back direction, the two transmission shaft assemblies can be rotatably arranged on the frame and are in transmission connection with the needling driving device, the two transmission shaft assemblies have the same rotating speed and opposite rotating directions, the transmission shaft assembly at the front side is connected with the pricking needle assembly at the front side through a plurality of lifting transmission mechanisms, the transmission shaft assembly at the rear side is connected with the pricking needle assembly at the rear side through a plurality of lifting transmission mechanisms, the transmission shaft assembly comprises a central shaft and a plurality of eccentric wheels which are fixed on the central shaft, the central shaft is rotatably arranged on the frame and is arranged along the left and right direction, the number of the eccentric wheels and the number of the lifting transmission mechanisms are the same and are in one-to-one correspondence, the lifting, rocking arm upper end is articulated with the push rod lower extreme, and the push rod upper end is connected with the felting needle subassembly, and the push rod is in the uide bushing, its characterized in that: the transmission shaft assembly further comprises a plurality of dynamic balance wheel sets, each dynamic balance wheel set is installed on the central shaft and sequentially arranged along the axial direction of the central shaft, each dynamic balance wheel set comprises at least one dynamic balance wheel with the gravity center position deviating from the central shaft, and the gravity center deviation direction of the dynamic balance wheels is opposite to the gravity center deviation direction of the eccentric wheel.
The utility model discloses in, the barycenter skew direction of dynamic balance wheel is opposite with the barycenter skew direction of eccentric wheel, is that the barycenter position of dynamic balance wheel and the barycenter position of eccentric wheel stagger 180 degrees each other in the circumference of center pin.
In general, in the same transmission shaft assembly, the profile and the gravity center position of each eccentric wheel are completely overlapped in the axial direction of the central shaft, and the gravity center position of each dynamic balance wheel is completely overlapped in the axial direction of the central shaft; the eccentric wheels in the two transmission shaft assemblies are the same in number and correspond to one another in position, and the outlines and the gravity center positions of the two corresponding eccentric wheels are symmetrically arranged in front and back; the dynamic balance wheels in the two transmission shaft assemblies are same in number and correspond to one another in position, and the gravity center positions of the two corresponding dynamic balance wheels are symmetrically arranged front and back.
In the through-shaft type double-needle-plate barb machine, the gap between the net supporting plate and the net stripping plate can be used for the fiber web to pass through, the net supporting plate and the net stripping plate limit the fiber web together, and the gap between the net supporting plate and the net 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 two transmission shaft assemblies are driven by the needling driving device to rotate relatively at the same rotating speed, each eccentric wheel and each dynamic balance wheel on the central shaft rotate together when the central shaft rotates, the eccentric wheel drives the push rod to do vertical reciprocating linear motion through the rocker arm, and the push rod drives the needling assembly to do vertical reciprocating linear motion, so that the fiber web is repeatedly needled, and the fluffy fiber web is consolidated through the needling effect. Because the rotating speeds of the two transmission shaft assemblies are the same and the rotating directions are opposite, and the gravity center offset direction of the dynamic balance wheels in the same transmission shaft assembly is opposite to the gravity center offset direction of the eccentric wheels, the inertia force generated by each eccentric wheel in the same transmission shaft assembly in the rotating process can be counteracted by the inertia force generated by each dynamic balance wheel in the rotating process, and the lateral inertia force generated by each eccentric wheel and each dynamic balance wheel in the two transmission shaft assemblies in the rotating process can be counteracted mutually, and each eccentric wheel and each dynamic balance wheel are sequentially arranged along the axial direction of the central shaft, so that the stress of each position of the central shaft can be more uniform, and the stability of the gravity center position of the central shaft can be enhanced, thereby ensuring that the transmission shaft assemblies can keep stable operation, and effectively avoiding violent vibration and shaking of the double-needle plate barb machine during working, ensure the quality and yield of the needle punched product and reduce noise. 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 outlines of the eccentric wheels are easy to completely coincide in the axial direction of the central shaft and the gravity center position when the eccentric wheels are arranged on the central shaft, the motion of each lifting transmission mechanism can be ensured to keep synchronism, and the sprain of a needle beam in the acupuncture assembly is avoided.
In a preferred embodiment, in the transmission shaft assembly, the number of the dynamic balance wheel sets is one less than that of the eccentric wheels, and the eccentric wheels and the dynamic balance wheel sets are alternately arranged along the axial direction of the central shaft; each dynamic balance wheel set comprises two dynamic balance wheels which are arranged side by side from left to right, and the two dynamic balance wheels are positioned between the two adjacent eccentric wheels. Generally, the installation positions of each eccentric wheel and each dynamic balance wheel of the same transmission shaft assembly on the central shaft are bilaterally symmetrical, so that the stress of each position of the central shaft is uniform, and the balance of the central shaft is better.
In a preferred 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 central 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. The balancing weight is used for making the gravity center position of the dynamic balance wheel deviate from the central shaft.
In a more 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 stable, the low noise of acupuncture mechanism during operation.
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 left half shaft and the right half shaft are coincident with the axis of the central shaft, the right end of the left half shaft is fixedly connected with the left end of the central shaft through the left coupling flywheel, and the left end of the right half shaft is fixedly connected with the right end of the central shaft through the right coupling flywheel; the left half shaft or the right half shaft is in transmission connection with the needling 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 the preferred scheme, a main transmission gear is arranged on one transmission shaft assembly, a slave transmission gear is arranged on the other transmission shaft assembly, the main transmission gear is meshed with the slave transmission gear, and the transmission ratio of the main transmission gear to the slave transmission gear is 1. This ensures that the two driveshaft assemblies rotate at the same speed and in opposite directions, and simplifies construction. The power of the needling driving device (such as a needling driving motor) is transmitted by the transmission shaft assembly provided with the main transmission gear and is transmitted to the other transmission shaft assembly from the transmission gear through the main transmission gear, so that the two transmission shaft assemblies have the same rotating speed and opposite rotating directions. The primary and secondary drive gears are typically keyed to corresponding drive shaft assemblies. The main transmission gear and the auxiliary transmission gear can be respectively arranged on the left half shafts of the two transmission shaft assemblies and also can be respectively arranged on the right half shafts of the two transmission shaft assemblies.
In a preferred scheme, the stand is provided with two bearing seat groups, and the two bearing seat groups correspond to the two central shafts one by one; each bearing seat group comprises a plurality of bearing seats which are sequentially arranged along the axial direction of the central shaft, and each bearing seat is respectively connected with the corresponding part on the corresponding central shaft through a bearing. Like this, each bearing frame of bearing seat group can support corresponding center pin jointly, can avoid the center pin to appear warping because of bearing a burden too big, effectively prolongs its life.
In a preferred embodiment, the transmission shaft assembly further includes a control circuit, a detection device for detecting whether the eccentric wheel reaches a bottom dead center, and a resistance mechanism capable of applying resistance to the transmission shaft assembly, wherein the detection device is electrically connected to a corresponding input end of the control circuit, and the resistance mechanism is electrically connected to 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; until the rotating speed of the transmission shaft assembly is slow, the detection device detects that the eccentric wheel reaches the bottom dead center, the detection device sends a signal to the control circuit, the control circuit enables the transmission shaft assembly to stop immediately through the resistance mechanism, and each eccentric wheel is made to stay at the bottom dead center, so that each needle of the needle assembly can be completely separated from the fiber web.
In a more preferable scheme, the detecting device is a photoelectric eye, and the photoelectric eye is mounted on the frame and corresponds to a bottom dead center position of the 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 lancet assembly typically includes a needle bar fixedly mounted on and above the needle bar, a needle plate on an upper surface of the needle plate (the needles are typically evenly distributed on the upper surface of the needle plate), and a plurality of lancets, wherein the needle bar is coupled to the pusher.
The utility model discloses a through-shaft type double needle board barb machine's acupuncture mechanism is when carrying out acupuncture, because two transmission shaft subassembly's rotational speed is the same and the direction of rotation is opposite, and the barycentric skew direction of dynamic balance wheel is opposite with the barycentric skew direction of eccentric wheel in same transmission shaft subassembly, consequently, the inertial force that each eccentric wheel in same transmission shaft subassembly produced in the rotation process all can be offset by the inertial force that each dynamic balance wheel produced in the rotation process, and the side direction inertial force that each eccentric wheel and each dynamic balance wheel in two transmission shaft subassemblies produced in the rotation process also can offset each other, and arrange each eccentric wheel, each dynamic balance wheel along the axial of center pin in proper order, can make each position atress of center pin more even, and strengthen the stability of center pin barycentric position, thereby ensure that transmission shaft subassembly can keep steady operation, effectively avoid two needle board barb machines to produce violent vibration and rock at the during operation, ensure the quality and the output of acupuncture product to 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 contours and the gravity center positions of all the eccentric wheels are easily completely overlapped in the axial direction of the central shaft when all the eccentric wheels are installed on the central shaft, the motion of all the lifting transmission mechanisms can be ensured to keep synchronism, and the sprain of a needle beam in the needling assembly is avoided.
Drawings
Fig. 1 is a schematic structural view of a through-shaft type double-needle plate barb machine according to a preferred embodiment of the invention.
Fig. 2 is a left side view of fig. 1.
Figure 3 is a schematic illustration of the dynamic balance wheel cooperation of the two drive shaft assemblies of the through-shaft double needle plate barb machine of figure 1.
Detailed Description
As shown in fig. 1 and 2, the through-shaft type double-needle-plate barb 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 positioned below the screen supporting plate 2, and the needling mechanism 4 is positioned below the screen stripping plate 3; the acupuncture mechanism 4 comprises an acupuncture driving device 41, two transmission shaft assemblies 42 which are arranged side by side in a front-back manner and two acupuncture needle assemblies 43 which are arranged side by side in a front-back manner, the two transmission shaft assemblies 42 can be rotatably arranged on the machine frame 1 and are in transmission connection with the acupuncture driving device 41, the two transmission shaft assemblies 42 have the same rotating speed and opposite rotating directions, the transmission shaft assembly 42 on the front side is connected with the acupuncture needle assembly 43 on the front side through a plurality of lifting transmission mechanisms 44, the transmission shaft assembly 42 on the rear side is connected with the acupuncture needle assembly 43 on the rear side through a plurality of lifting transmission mechanisms 44, the transmission shaft assembly 42 comprises a central shaft 421 and a plurality of eccentric wheels 422 fixed on the central shaft 421, the central shaft 421 can be rotatably arranged on the machine frame 1 and is arranged along the left-right direction, the eccentric wheels 422 and the lifting transmission mechanisms 44 are in the same, the guide sleeve 443 moves up and down and is fixedly installed on the machine frame 1, the lower end of the rocker arm 441 is sleeved on the corresponding eccentric wheel 422, the upper end of the rocker arm 441 is hinged with the lower end of the push rod 442, the upper end of the push rod 442 is connected with the needle assembly 43, and the push rod 442 is located in the guide sleeve 443; the transmission shaft assembly 42 further comprises a plurality of dynamic balance wheel sets 423, each dynamic balance wheel set 423 is installed on the central shaft 421 and is arranged in sequence along the axial direction of the central shaft 421, the dynamic balance wheel sets 423 comprise at least one dynamic balance wheel 4231 with the gravity center position deviated from the central shaft 421, and the gravity center deviation direction of the dynamic balance wheel 4231 is opposite to the gravity center deviation direction of the eccentric wheel 422.
In the present embodiment, in the same drive shaft assembly 42, the profile and the center of gravity position of each eccentric 422 completely coincide in the axial direction of the central shaft 421, and the center of gravity position of each dynamic balance wheel 4231 completely coincide in the axial direction of the central shaft 421; the eccentric wheels 422 in the two transmission shaft assemblies 42 are the same in number and correspond to each other in position one by one, and the outlines and the gravity center positions of the two corresponding eccentric wheels 422 are symmetrically arranged front and back; the dynamic balance wheels 4231 in the two transmission shaft assemblies 42 are the same in number and correspond to each other in position one by one, and the gravity center positions of the two corresponding dynamic balance wheels 4231 are symmetrically arranged front and back.
In the present embodiment, in the transmission shaft assembly 42, the number of the dynamic balance wheel sets 423 is one less than that of the eccentrics 422, and the eccentrics 422 and the dynamic balance wheel sets 423 are alternately arranged along the axial direction of the central shaft 421; each dynamic balance wheel set 423 comprises two dynamic balance wheels 4231 arranged side by side left and right, and the two dynamic balance wheels 4231 are positioned between two adjacent eccentric wheels 422. Referring to fig. 3, the dynamic balance wheel 4231 includes a wheel body 42311 and a counterweight 42312, a mounting hole 423111 is provided at a central position of the wheel body 42311, and the wheel body 42311 is fixedly mounted on the central shaft 421 through a mounting hole 423111; the wheel body 42311 is provided with a mounting groove 423112, the mounting groove 423112 is positioned at one side of the mounting hole 423111, and the counter weight 42312 is mounted in the mounting groove 423112 through a bolt connecting structure 42313. The weight 42312 is used to shift the center of gravity of the dynamic balance wheel 4231 from the central axis 421.
In this embodiment, the transmission shaft assembly 42 further includes a left half shaft 424, a right half shaft 425, a left coupling flywheel 426 and a right coupling flywheel 427, the left half shaft 424 and the right half shaft 425 are both rotatably mounted on the machine frame 1, the axes of the left half shaft 424 and the right half shaft 425 coincide with the axis of the central shaft 421, the right end of the left half shaft 424 is fixedly connected with the left end of the central shaft 421 through the left coupling flywheel 426, and the left end of the right half shaft 425 is fixedly connected with the right end of the central shaft 421 through the right coupling flywheel 427; the left half shaft 424 is in transmission connection with the needling drive 41.
In this embodiment, the left half shaft 424 of one drive shaft assembly 42 is provided with a main drive gear 428, the left half shaft 424 of the other drive shaft assembly 42 is provided with a secondary drive gear 429 (the secondary drive gear 429 is blocked by the main drive gear 428, so the reference number is the same), the main drive gear 428 is meshed with the secondary drive gear 429, and the transmission ratio is 1. The power of the needling drive 41 is transmitted from the drive shaft assembly 42, which has a final drive gear 428, and is transmitted from the drive gear 429 to the other drive shaft assembly 42 via the final drive gear 428, so that the two drive shaft assemblies 42 rotate at the same speed and in opposite directions. The main transmission gear 428 and the auxiliary transmission gear 429 are respectively arranged on the left half shafts 424 of the two transmission shaft assemblies 42.
In this embodiment, two bearing seat sets 11 are installed on the frame 1, and the two bearing seat sets 11 correspond to the two central shafts 421 one by one; each bearing seat set 11 includes a plurality of bearing seats 111 arranged in sequence along the axial direction of the central shaft 421, and each bearing seat 111 is connected to a corresponding portion of the central shaft 421 through a bearing.
In this embodiment, needle assembly 43 includes a needle bar 431, a needle plate 432 and a plurality of needles 433, needle plate 432 is fixedly mounted on needle bar 431 and above needle bar 431, needles 433 are provided on the upper surface of needle plate 432 (needles 433 are evenly distributed on the upper surface of needle plate 432), wherein needle bar 431 is connected with a push rod 442. 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.
The acupuncture mechanism 4 further includes a control circuit (not shown), a detecting device (not shown) for detecting whether the eccentric wheel 422 reaches the bottom dead center, and a resistance mechanism 45 capable of applying 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 45 is electrically connected to a corresponding output end of the control circuit. In this embodiment, the detecting device is a photoelectric eye, and the photoelectric eye is installed on the frame 1 and corresponds to the bottom dead center position of the eccentric wheel 422; the resistance mechanism 45 is an air bag type band-type brake which is arranged on the frame 1, and the transmission shaft assembly 42 is positioned on the inner side of each friction plate of the air bag type band-type brake.
The working principle of the through shaft type single needle plate barb machine is briefly described as follows:
in the through-shaft type double-needle plate barb machine, a gap between the net supporting plate 2 and the net stripping plate 3 can be used for a fiber web to pass through, the net supporting plate 2 and the net stripping plate 3 limit the fiber web together, and the gap between the net supporting plate 2 and the net stripping plate 3 and an area corresponding to the needling mechanism 4 form a needling area.
When the needling mechanism 4 performs needling, the two transmission shaft assemblies 42 are driven by the needling driving device 41 to rotate relatively at the same rotating speed, each eccentric wheel 422 on the central shaft 421 rotates together with each dynamic balance wheel 4231 when the central shaft 421 rotates, the eccentric wheel 422 drives the push rod 442 to do reciprocating linear motion up and down through the rocker arm 441, and the push rod 442 drives the needle assembly 43 to do reciprocating linear motion up and down, so that the fiber web is repeatedly needled, and the fluffy fiber web is consolidated through the needling effect. Inertia force generated by each eccentric wheel 422 in the same transmission shaft assembly 42 in the rotating process can be offset by inertia force generated by each dynamic balance wheel 4231 in the rotating process, lateral inertia force generated by each eccentric wheel 422 and each dynamic balance wheel 4231 in the two transmission shaft assemblies 42 in the rotating process can also be offset mutually, each eccentric wheel 422 and each dynamic balance 4231 wheel are sequentially arranged along the axial direction of the central shaft 421, stress on each position of the central shaft 421 can be uniform, stability of the gravity center position of the central shaft 421 is enhanced, stable running of the transmission shaft assemblies 42 can be ensured, severe vibration and shaking generated by the double-needle plate barb machine in working can be effectively avoided, quality and yield of a needled product are ensured, and noise is reduced. After the acupuncture mechanism 4 stops working, the control circuit applies a certain resistance to the transmission shaft assembly 42 through the resistance mechanism 45, so that the rotation speed of the transmission shaft assembly is gradually reduced; until the detecting device detects that the eccentric wheel 422 reaches the bottom dead point when the rotating speed of the transmission shaft assembly 42 is slower, the detecting device sends a signal to the control circuit, and the control circuit stops the transmission shaft assembly 42 immediately through the resistance mechanism 45, so that each eccentric wheel 422 stays at the bottom dead point, and thus each needle 433 of the needle assembly 43 can be completely separated from the fiber 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 (9)

1. A through-shaft type double-needle plate barb machine comprises a rack, 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 rack, the screen stripping plate is positioned below the screen supporting plate, and the needling mechanism is positioned below the screen stripping plate; the needling mechanism comprises a needling driving device, two transmission shaft assemblies which are arranged side by side in the front and back direction and two pricking needle assemblies which are arranged side by side in the front and back direction, the two transmission shaft assemblies can be rotatably arranged on the frame and are in transmission connection with the needling driving device, the two transmission shaft assemblies have the same rotating speed and opposite rotating directions, the transmission shaft assembly at the front side is connected with the pricking needle assembly at the front side through a plurality of lifting transmission mechanisms, the transmission shaft assembly at the rear side is connected with the pricking needle assembly at the rear side through a plurality of lifting transmission mechanisms, the transmission shaft assembly comprises a central shaft and a plurality of eccentric wheels which are fixed on the central shaft, the central shaft is rotatably arranged on the frame and is arranged along the left and right direction, the number of the eccentric wheels and the number of the lifting transmission mechanisms are the same and are in one-to-one correspondence, the lifting, rocking arm upper end is articulated with the push rod lower extreme, and the push rod upper end is connected with the felting needle subassembly, and the push rod is in the uide bushing, its characterized in that: the transmission shaft assembly further comprises a plurality of dynamic balance wheel sets, each dynamic balance wheel set is installed on the central shaft and sequentially arranged along the axial direction of the central shaft, each dynamic balance wheel set comprises at least one dynamic balance wheel with the gravity center position deviating from the central shaft, and the gravity center deviation direction of the dynamic balance wheels is opposite to the gravity center deviation direction of the eccentric wheel.
2. The machine according to claim 1, wherein: in the transmission shaft assembly, the number of the dynamic balance wheel sets is one less than that of the eccentric wheels, and the eccentric wheels and the dynamic balance wheel sets are alternately arranged along the axial direction of the central shaft; each dynamic balance wheel set comprises two dynamic balance wheels which are arranged side by side from left to right, and the two dynamic balance wheels are positioned between the two adjacent eccentric wheels.
3. The machine according to claim 1, wherein: 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 central 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.
4. The machine of claim 3 wherein: the balancing weight is installed in the mounting groove through a detachable connecting structure.
5. The machine according to any one of claims 1 to 4, wherein: 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 left half shaft and the right half shaft are overlapped with the axis of the central shaft, the right end of the left half shaft is fixedly connected with the left end of the central shaft through the left coupling flywheel, and the left end of the right half shaft is fixedly connected with the right end of the central shaft through the right coupling flywheel; the left half shaft or the right half shaft is in transmission connection with the needling driving device.
6. The machine according to any one of claims 1 to 4, wherein: one transmission shaft assembly is provided with a main transmission gear, the other transmission shaft assembly is provided with a driven transmission gear, the main transmission gear is meshed with the driven transmission gear, and the transmission ratio of the main transmission gear to the driven transmission gear is 1.
7. The machine according to any one of claims 1 to 4, wherein: two bearing seat groups are arranged on the rack and correspond to the two central shafts one by one; each bearing seat group comprises a plurality of bearing seats which are sequentially arranged along the axial direction of the central shaft, and each bearing seat is respectively connected with the corresponding part on the corresponding central shaft through a bearing.
8. The machine according to any one of claims 1 to 4, wherein: the transmission shaft assembly further comprises a control circuit, a detection device used for detecting whether the eccentric wheel reaches a bottom dead center or not, and a resistance mechanism capable of applying resistance to the transmission shaft assembly, wherein 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.
9. The machine of claim 8 wherein: the detection device is a photoelectric eye which is arranged on the rack and corresponds to the position of the lower dead point of the 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.
CN202021684210.4U 2020-08-13 2020-08-13 Through-shaft type double-needle-plate barb machine Active CN212955621U (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115199704A (en) * 2022-09-15 2022-10-18 仪征市佳禾机械有限公司 Dynamic balancing device for needling machine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115199704A (en) * 2022-09-15 2022-10-18 仪征市佳禾机械有限公司 Dynamic balancing device for needling machine
CN115199704B (en) * 2022-09-15 2022-11-29 仪征市佳禾机械有限公司 Dynamic balancing device for needling machine

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Effective date of registration: 20230421

Address after: 522000 North of Deshan Street East Section, Industrial Transfer Industrial Park, Jieyang City, Guangdong Province

Patentee after: Guangdong Sanhui Nonwoven Machinery Co.,Ltd.

Patentee after: Guangdong Sanhui Nonwoven Technology Co.,Ltd.

Address before: 522000 north of East section of Deshan street, Jieyang industrial transfer park, Jieyang City, Guangdong Province

Patentee before: Guangdong Sanhui Nonwoven Machinery Co.,Ltd.