阅读说明：本技术 一种高速针刺机针刺装置 (High-speed needling machine needling device ) 是由 毋佳瑞 李飏 于 2021-07-22 设计创作，主要内容包括：本发明提供一种同步提高刺针上下往复速度和纤网进料速度的高速针刺机针刺装置。一种高速针刺机针刺装置,包括壳体、驱动部件和设有若干刺针的针板,该装置还包括传动部件和复位部件,针板通过复位部件连接壳体内壁面,壳体表面设有若干用于通行刺针的刺针通道,驱动部件通过传动部件带动壳体以壳体中轴线为中心旋转,驱动部件通过传动部件带动刺针往复通行于刺针通道形成刺针伸出状态和刺针回缩状态。本发明通过合理的结构设计,使刺针在刺入刺出纤网时会随着纤网进行一段短时间内的同方向的位移,可以防止纤网表层在刺针回缩时被刺针直上直下的拉扯运动而使成品表面产生痕迹,可以突破纤网送料速度的限制,提高成品生产效率。(The invention provides a high-speed needling device for synchronously improving the up-and-down reciprocating speed of a needle and the feeding speed of a fiber web. The utility model provides a high-speed acupuncture machine acupuncture device, includes the casing, drive unit and is equipped with the faller of a plurality of felters, the device still includes drive unit and reset unit, the faller passes through reset unit and connects the casing internal face, the casing surface is equipped with a plurality of felters passageways that are used for current felter, drive unit drives the casing through drive unit and uses the casing axis to rotate as the center, drive unit drives the felter through drive unit and reciprocates to pass and form felter stretching state and the felter state of retracting in the felter passageway. Through reasonable structural design, the invention enables the felting needles to displace in the same direction in a short time along with the fiber web when penetrating and penetrating out of the fiber web, can prevent the surface layer of the fiber web from generating marks due to the straight-up and straight-down dragging movement of the felting needles when the felting needles retract, can break through the limitation of the feeding speed of the fiber web and improve the production efficiency of finished products.)

1. A high-speed needling machine needling device comprises a shell (1), a driving part (2) and a needle plate (3) provided with a plurality of needles (301), and is characterized in that: this high-speed acupuncture machine acupuncture device still includes drive disk assembly (4) and reset block (5), casing (1) internal face is connected through reset block (5) in faller (3), casing (1) surface is equipped with a plurality of felting needle passageways (101) that are used for current felting needle (301), drive disk assembly (2) drive casing (1) through drive disk assembly (4) and use casing (1) axis to be rotatory as the center, drive disk assembly (2) drive felting needle (301) through drive disk assembly (4) and reciprocate to pass and form the state of stretching out and the state of felting needle retraction in felting needle passageway (101).

2. The needling apparatus of a high-speed needling machine according to claim 1, wherein: the needle plate driving mechanism is characterized in that the transmission part (4) comprises a cam (401), a long shaft (402) and a short shaft (403), the cam (401) is arranged on the long shaft (402), the cam (401) and the long shaft (402) are coaxial, the minimum radial direction of the cam (401) is not larger than the minimum linear distance between the needle plate (3) and the shaft of the long shaft (402) in the retraction state of the needle, the driving part (2) comprises a first motor (201) and a second motor (202), the first motor (201) is connected with the cam (401) through the long shaft (402), and the second motor (202) is connected with the shell (1) through the short shaft (403).

3. The needling apparatus of a high-speed needling machine according to claim 1, wherein: the needling device of the high-speed needling machine further comprises a machine frame (7), the transmission part (4) comprises a stroke limiting piece (404) and a fixed shaft (405), the stroke limiting piece (404) is fixedly connected with the machine frame (7) through the fixed shaft (405), and an arc section is arranged at the end part of the stroke limiting piece (404).

4. The needling apparatus of a high-speed needling machine according to claim 1, wherein: the reset component (5) comprises a connecting block (501), a fixing rod (502), a moving rod (503) and a spring (504), a cavity with an opening at one end is arranged in the connecting block (501), the fixing rod (502) is fixedly connected with the inner wall surface of the shell (1), the moving rod (503) is fixedly connected with the closed end of the cavity, and the spring (504) is sleeved outside the fixing rod (502) and the moving rod (503).

5. The needling apparatus of a high-speed needling machine according to claim 1, wherein: the needling device of the high-speed needling machine further comprises a needling platform (6), wherein the needling platform (6) is arranged below the shell (1), a plurality of blind holes (601) are formed in the needling platform (6), and each blind hole (601) corresponds to one pricking needle channel (101).

6. The needling apparatus of a high-speed needling machine according to claim 5, wherein: the acupuncture platform (6) is a cylinder, the blind holes (601) are uniformly distributed on the surface of the cylinder, the driving part (2) comprises a third motor (203), and the third motor (203) is connected with the acupuncture platform (6) and used for enabling the acupuncture platform (6) to rotate by taking a cylinder middle shaft as a center.

7. A high-speed needling apparatus according to claim 5 or 6, characterized in that: the aperture of the blind hole (601) is larger than that of the puncture needle channel (101).

8. The needling apparatus of a high-speed needling machine according to claim 1, wherein: the felting needles (301) are perpendicular to the needle plate (3), the felting needles (301) and the felting needle channel (101) form the same acute angle or the same obtuse angle with the inner wall of the shell (1), and the felting needles (301) face to the rotating direction of the shell (1).

Technical Field

The invention relates to a needling device, in particular to a needling device of a high-speed needling machine.

Background

The needle punching method is an important process for processing the non-woven material, the needle punching method utilizes the needle punching with hooks on the edge to repeatedly punch a fluffy fiber web, the hooks on the needles carry some fibers on the surface and the inner layer of the fiber web to pass through the fiber web layer along with the needles, so that the fibers are mutually entangled in the movement process, and meanwhile, the fiber web is compressed due to the action of friction force and certain extrusion on the fiber web caused by the up-and-down displacement of the fibers, and finally, the needle punching non-woven material with certain thickness and certain strength is formed. Therefore, as a key component of the needling machine, the higher the needling frequency of the needling device per unit time, the faster the feeding speed is matched, the faster the speed of manufacturing the finished product is, and the higher the production efficiency is.

In the prior art, a common means for improving the production efficiency is to increase the needling area, specifically, the width of a needle plate is increased, more needles are arranged on the needle plate, the weight of the needling device is greatly increased, and the reciprocating motion stability of the needles is affected. Another method is to increase the feed rate and the speed of movement of the needles of the needling apparatus. When the needle punching method is carried out, the fiber web moves forward on the feeding machine at a constant speed, the pricking pin reciprocates up and down to penetrate through the fiber web, and the returning needle of the pricking pin can cause the displacement of fibers of the fiber web, so that the feeding speed can not be increased without limit, and the phenomenon that the surface layer of the fiber web is pulled and displaced when the pricking pin returns, so that the surface of a finished product is marked, and the surface smoothness of the finished product is influenced is prevented. The internal structure of the acupuncture device commonly used in the prior art is an eccentric wheel connecting rod transmission structure, and the acupuncture frequency of the acupuncture device can reach 1800 times/minute and the production speed of 1-10 m/minute.

In conclusion, research and development on a novel needling device for a high-speed needling machine are important for technical development in the field, the limitation of the feeding speed of a fiber web is solved, the vertical reciprocating speed of a needle is synchronously increased, and the feeding speed of the fiber web is synchronously increased, so that the production efficiency of a non-woven material is improved.

Disclosure of Invention

The invention aims to provide a high-speed needling device for synchronously increasing the up-and-down reciprocating speed of a needle and the feeding speed of a fiber web, which breaks through the limitation of the feeding speed of the fiber web, improves the production efficiency of a non-woven material and solves the problems in the background technology.

The technical scheme adopted by the invention for solving the technical problems is as follows:

the utility model provides a high-speed acupuncture machine acupuncture device, includes casing, drive disk assembly and is equipped with the faller of a plurality of felters, and the device still includes drive disk assembly and reset unit, the faller passes through reset unit and connects the casing internal face, the housing face is equipped with a plurality of felters passageways that are used for current felter, drive disk assembly drives the casing through drive disk assembly and uses the casing axis to rotate as the center, drive disk assembly drives the felter through drive disk assembly and reciprocates current in felter passageway formation felter extension state and the felter state of retracting.

Preferably, the driving part comprises a cam, a long shaft and a short shaft, the cam is arranged on the long shaft, the cam and the long shaft are coaxial, the minimum radial direction of the cam is not larger than the minimum linear distance between the needle plate and the axial center of the long shaft when the puncture needle is in a retraction state, the driving part comprises a first motor and a second motor, the first motor is connected with the cam through the long shaft, and the second motor is connected with the shell through the short shaft.

Preferably, the needling device of the high-speed needling machine further comprises a frame, the transmission component comprises a stroke limiting part and a fixed shaft, the stroke limiting part is fixedly connected with the frame through the fixed shaft, and an arc section is arranged at the end part of the stroke limiting part.

Preferably, the reset component comprises a connecting block, a fixed rod, a movable rod and a spring, a concave cavity with an opening at one end is arranged in the connecting block, the fixed rod is fixedly connected with the inner wall surface of the shell, the movable rod is fixedly connected with the closed end of the concave cavity, and the spring is sleeved outside the fixed rod and the movable rod.

Preferably, the needling device of the high-speed needling machine further comprises a needling platform, the needling platform is arranged below the shell, a plurality of blind holes are formed in the needling platform, and each blind hole corresponds to one needle channel.

Preferably, the needling platform is a cylinder, the blind holes are uniformly distributed on the surface of the cylinder, and the driving part comprises a third motor which is connected with the needling platform and used for enabling the needling platform to rotate by taking the central axis of the cylinder as the center.

Preferably, the blind hole aperture is larger than the lancet channel aperture.

Preferably, the needles are perpendicular to the needle plate, the needles and the needle channels form acute or obtuse included angles with the inner wall of the housing, and the needles face the rotation direction of the housing.

The invention has the beneficial effects that:

according to the high-speed needling machine needling device, through reasonable structural design, the felting needles can move in the same direction in a short time along with a fiber web when penetrating and needling the fiber web, so that the surface of a finished product can be prevented from generating marks due to straight-up and straight-down dragging movement of the felting needles when the felting needles retract, the surface smoothness of the finished product is ensured, the limitation of the feeding speed of the fiber web can be broken through, the fiber web is fed into the device at a high speed, and the production efficiency of the finished product is improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

FIG. 1 is a schematic structural view of embodiment 1 of the present invention;

FIG. 2 is a schematic view of the configuration of the lancet channel of the present invention;

FIG. 3 is a schematic structural view of embodiment 2 of the present invention;

FIG. 4 is a schematic structural view of the needling platform of the present invention;

FIG. 5 is a schematic structural view of a blind via of the present invention;

FIG. 6 is a schematic structural view of embodiment 3 of the present invention;

FIG. 7 is a schematic view of a travel limiter according to the present invention;

fig. 8 is a schematic structural view of embodiment 4 of the present invention.

In the figure: 1. the needle plate comprises a shell, 2, a driving component, 3, a needle plate, 4, a transmission component, 5, a reset component, 6, a needle platform, 7, a frame, 101, a needle channel, 201, a first motor, 202, a second motor, 203, a third motor, 301, a needle, 401, a cam, 402, a long shaft, 403, a short shaft, 404, a stroke limiting part, 405, a fixed shaft, 501, a connecting block, 502, a fixed rod, 503, a movable rod, 504, a spring, 601 and a blind hole.

Detailed Description

The technical solution of the present invention is further specifically described below by way of specific examples in conjunction with the accompanying drawings. It is to be understood that the practice of the invention is not limited to the following examples, and that any variations and/or modifications may be made thereto without departing from the scope of the invention.

In the present invention, all parts and percentages are by weight, unless otherwise specified, and the equipment and materials used are commercially available or commonly used in the art. The methods in the following examples are conventional in the art unless otherwise specified. The components or devices in the following examples are, unless otherwise specified, standard parts or parts known to those skilled in the art, the structure and principle of which are known to those skilled in the art through technical manuals or through routine experimentation.

Example 1:

the needling device of the high-speed needling machine shown in figure 1 comprises a shell 1, a driving part 2, a needle plate 3 provided with a plurality of needles 301, a transmission part 4 and a reset part 5, wherein the needle plate 3 is connected with the inner wall surface of the shell 1 through the reset part 5.

As shown in FIG. 2, the surface of the housing 1 is provided with a plurality of lancet channels 101 for passing lancets. The driving part 2 drives the shell 1 to rotate by taking the central axis of the shell 1 as the center through the transmission part 4, and the driving part 2 drives the puncture needle 301 to reciprocate in the puncture needle channel 101 through the transmission part 4 to form a puncture needle extending state and a puncture needle retracting state.

Through the technical scheme, the fiber web is fed below the shell 1 at high speed, the shell 1 rotates in the same direction as the forward direction of the fiber web, the needle 301 on one needle plate 3 on the inner wall surface of the shell 1 is pressed downwards into an extending stroke to penetrate the fiber web under the driving of the transmission part 4, then the fiber web is penetrated through to reach the maximum extending stroke position, then the needle 301 on the needle plate 3 is gradually reduced in pressure along with the continuous driving of the transmission part 4, the needle 301 on the needle plate 3 upwards enters a retracting stroke under the resetting effect of the resetting part 5 until the needle 301 is extracted from the fiber web and retracts into the shell 1 to return to the initial position of the needle 301, and the next needle plate 3 starts to repeat the steps along with the further relative rotation of the shell 1 and the cam 401. Under the rotation effect of the shell 1, the felting needle 301 can move along with the fiber web in the same direction for a short time when being penetrated into and pricked out of the fiber web, so that the surface of a finished product is prevented from generating marks due to the straight-up and straight-down dragging motion of the felting needle when the felting needle retracts, the surface smoothness of the finished product is ensured, the limitation of the feeding speed of the fiber web can be broken through, the fiber web can be fed into the device at a high speed, and the production efficiency of the finished product is improved.

Example 2:

the needling device of the high-speed needling machine shown in fig. 3 comprises a shell 1, a driving part 2, a needle plate 3 provided with a plurality of needles 301, a transmission part 4, a reset part 5, a needling platform 6 and a frame 7.

The shell 1 is a cylinder with two closed ends, the surface of the cylinder is provided with a plurality of fine holes which are uniformly distributed and vertically penetrate through the wall surface of the cylinder to form the felting needle channels 101 for passing the felting needles, the felting needle channels 101 are divided into six groups and form corresponding relation with the following needle plates 3, and the felting needle channels 101 in each group are in one-to-one correspondence with the felting needles 301 on the opposite group of needle plates 3.

Six groups of needle plates 3 are connected with the inner wall surface of the shell 1 through the reset parts 5 fixedly connected with the end parts of the two ends of each needle plate 3, the six groups of needle plates 3 are uniformly distributed on the inner wall surface of the shell 1 by taking the central axis of the cylinder of the shell 1 as the center, and the needles 301 on the needle plates 3 are vertical to the surface of the needle plates and the inner wall surface of the shell. It should be noted that the embodiment using six sets of needle channels and needle boards is merely an example, and the skilled person can adjust the number of needle channels and needle boards according to the actual production needs.

The needles 301 of each needle plate 3 face the inner wall surface of the housing 1, and each needle 301 corresponds to a fine hole on the wall surface of one cylinder, the diameter of the fine hole is larger than that of the needle 301, so that the needle 301 can pass through the needle channel 101 without any obstruction.

The transmission member 4 includes cams 401, a long axis 402, and a short axis 403, the two cams 401 are provided on both sides of the long axis 402, and the cams 401 and the long axis 402 are coaxial. The minimum radial diameter of the cam 401 is not larger than the minimum linear distance between the needle plate 3 and the axis of the long shaft 402 when the needle is in a retracted state, and the cam 401 can not interfere with the position of the needle plate 3 when the needle is in the retracted state, so that the needle is retracted in place. The maximum radial direction of the cam 401 determines the maximum stroke of the needle 301, and the needle 301 is displaced along a section of the contour line of the cam 401 under the action of the cam 401, and the corresponding needle 301 is displaced to the maximum stroke when the cam 401 is at the maximum radial direction.

The driving component comprises a first motor 201 and a second motor 202, the first motor 201 is connected with a cam 401 through a long shaft 402, and the second motor 202 is connected with the shell 1 through a short shaft 403.

The reset component 5 comprises a connecting block 501, a fixed rod 502, a movable rod 503 and a spring 504, wherein a concave cavity with an opening at one end is arranged in the connecting block 501, the fixed rod 502 is fixedly connected with the inner wall surface of the shell 1, the movable rod 503 is fixedly connected with the closed end of the concave cavity, and the spring 504 is sleeved outside the fixed rod 502 and the movable rod 503.

Under the interaction of the above components, the driving part 2 drives the housing 1 to rotate around the central axis of the housing 1 through the transmission part 4, and the driving part 2 drives the puncture needle 301 to pass through the puncture needle channel 101 in a reciprocating manner through the transmission part 4 to form a puncture needle extending state and a puncture needle retracting state.

The needling platform 6 is arranged right below the shell 1, in order to ensure that the needles 301 effectively penetrate the fiber web and do not damage the heads of the needles after penetrating the fiber web, a plurality of blind holes 601 which are uniformly distributed are arranged on the needling platform 6, each blind hole 601 corresponds to one needle channel 101, the needles 301 penetrate the fiber web and then enter the last section of the extension stroke, the heads of the needles 301 extend into the blind holes 601, and then the needles 301 enter the retraction stroke.

As shown in FIG. 4, in order to further improve the production efficiency of the device, the needling platform 6 is a cylinder, and the blind holes 601 are uniformly distributed on the surface of the cylinder and divided into six groups, so that each blind hole 601 in each group can correspond to one-to-one of the needles 301 and the needle channels 101 on the opposite group of needle boards 3. The driving component also comprises a third motor 203, the third motor 203 is connected with the acupuncture platform 6 and drives the acupuncture platform 6 to rotate at a rotating speed matched with the shell 1, and the following movement modes are formed: if the housing 1 rotates counterclockwise at a certain speed, the needling platform 6 rotates clockwise at another matching speed, so that after one set of lancet channels 101 and one set of blind holes 601 are in the up-down opposite positions, as the housing 1 and the needling platform 6 continue to rotate, the positions of the set of lancet channels 101 and the set of blind holes 601 change and are no longer up-down opposite, and the next set of lancet channels 101 and the next set of blind holes 601 enter the up-down opposite positions as the housing 1 and the needling platform 6 continue to rotate.

As shown in FIG. 5, to ensure that the lancet 301 can pass smoothly and without interference through the lancet channel 101 and the blind hole 601 as the position of the lancet channel 101 and the blind hole 601 change, the aperture of the blind hole 601 is set larger than the aperture of the lancet channel 101 so that when the lancet 301 is in the retraction stroke, the head of the lancet 301 still has a longer buffer time to completely dislodge from the blind hole 601 than calculated from the tangential linear velocity of rotation of the lancet platform.

The working process of the device of the embodiment is as follows: the fiber web is fed between the shell 1 and the needling platform 6 at high speed, the shell 1 rotates in the counterclockwise direction, the cam 401 rotates in the clockwise direction, the needling platform 6 rotates in the clockwise direction, along with the relative rotation of the shell 1 and the cam 401, one needle plate 3 on the inner wall surface of the shell 1 starts to be pressed by the outline of the cam 401, the needles 301 on the needle plate 3 are pressed down into the extending stroke to penetrate the fiber web, when the cam 401 contacts the needle plate 3 at the maximum radial position, the needles 301 on the needle plate 3 reach the maximum extending stroke position to penetrate the fiber web, simultaneously under the synchronous rotation of the needling platform 6, the heads of the needles 301 momentarily extend into the blind holes 601 on the surface of the needling platform 6, along with the continuous relative rotation of the shell 1 and the cam 401, the pressure on the needles 301 on the needle plate 3 is gradually reduced, under the elastic force of the spring in the reset component 5, the needles 301 on the needle plate 3 upwards enter the retracting stroke, until it is extracted from the web and retracted into the housing 1, back to the initial position of the needles 301, and the next needle plate 3 begins to repeat the above steps as the housing 1 and cam 401 are further rotated relative to each other. When the fiber web moves forward at a high speed, the pricking pins 301 which are pricked into the fiber web are driven by the shell 1 to move for a short time in the same direction, so that the surface of a finished product can be well prevented from being marked by the straight up-and-down pulling movement of the pricking pins when the surface layer of the fiber web retracts, the surface smoothness of the finished product is ensured, and the production efficiency of the finished product is improved.

Example 3:

the technical scheme of the needling device of the high-speed needling machine is the same as that of the embodiment 2, and the differences are as follows: as shown in fig. 6, the transmission component 4 includes a stroke limiting element 404 and a fixed shaft 405, the stroke limiting element 404 is fixedly connected to the fixed shaft 405, the fixed shaft 405 is fixedly connected to the frame, the driving component does not include the first motor 201, that is, the relative position of the stroke limiting element 404 and the frame 7 is fixed, and the stroke limiting element 404 does not need to perform a rotational motion.

As shown in fig. 7, the end of the bottom end of the stroke limiter 404 is provided with a circular arc, and the minimum linear distance between the highest point of the circular arc and the top surface of the needle plate 3 is a set value, and the value is greater than zero. The lowest point of the arc determines the maximum stroke of the needle 301, and with the rotation of the housing 1, the top surface of the needle plate 3 forms a downward and upward motion track under the action of the arc end of the stroke limiting piece 404 to drive the needle 301 to perform reciprocating linear motion, and when the lowest point of the arc is located, the corresponding needle 301 moves to the maximum stroke.

The working process of the device of the embodiment is as follows: the fiber web is fed between the shell 1 and the needling platform 6 at high speed, the shell 1 rotates in the anticlockwise direction, the needling platform 6 rotates in the clockwise direction, along with the rotation of the shell 1, one needle plate 3 on the inner wall surface of the shell 1 starts to be pressed by the end part of the stroke limiting piece 404, the needles 301 on the needle plate 3 are pressed downwards into the extending stroke to pierce the fiber web, along with the further rotation of the shell 1, when the needle plate 3 contacts the lowest point of the circular arc of the end part of the stroke limiting piece 404, the needles 301 on the needle plate 3 reach the maximum extending stroke position to pierce the fiber web, simultaneously under the synchronous rotation of the needling platform 6, the heads of the needles 301 momentarily extend into the blind holes 601 on the surface of the needling platform 6, along with the continuous rotation of the shell 1, the needles 301 on the needle plate 3 are gradually reduced in pressure, and under the elastic force of the spring in the reset component 5, the needles 301 on the needle plate 3 upwards enter the retracting stroke, until it is withdrawn from the web and retracted into the housing 1, back to the original position of the needles 301, and as the housing 1 is rotated further, the next needle plate 3 begins to repeat the above steps.

Example 4:

the technical scheme of the needling device of the high-speed needling machine is the same as that of the embodiment 2, and the differences are as follows: as shown in fig. 8, a plurality of fine holes are uniformly distributed on the surface of the cylinder of the housing 1 and penetrate through the wall surface of the cylinder at a certain angle to form a needle channel 101 for passing the needles, and the needle channel 101 and the inner wall surface of the housing 1 form an included angle so that the needle channel 101 faces the rotation direction of the housing 1. Accordingly, the needle plate 3 and the needles 301 on the needle plate 3 form the same included angle with the inner wall surface of the housing 1 to ensure that the needles 301 pass through the needle channel 101 in an unimpeded reciprocating manner. Accordingly, the blind hole 601 on the needling platform 6 is also at the above-mentioned angle with the surface of the needling platform, so that the needle 301 can pass through the blind hole 601 without hindrance, and in order to ensure that the needle 301 can pass through the needle channel 101 and the blind hole 601 smoothly and without interference when the positions of the needle channel 101 and the blind hole 601 are changed, the aperture of the blind hole 601 should be larger than that of the needle channel 101 (higher than the aperture difference between the two in embodiment 2).

The working process of the device of the embodiment is as follows: the fiber web is fed between the shell 1 and the needling platform 6 at high speed, the shell 1 rotates in the counterclockwise direction, the cam 401 rotates in the clockwise direction, the needling platform 6 rotates in the clockwise direction, along with the relative rotation of the shell 1 and the cam 401, one needle plate 3 on the inner wall surface of the shell 1 starts to be pressed by the outline of the cam 401, the needles 301 on the needle plate 3 are pressed down into the extending stroke to penetrate the fiber web, when the cam 401 contacts the needle plate 3 at the maximum radial position, the needles 301 on the needle plate 3 reach the maximum extending stroke position to penetrate the fiber web, simultaneously under the synchronous rotation of the needling platform 6, the heads of the needles 301 momentarily extend into the blind holes 601 on the surface of the needling platform 6, along with the continuous relative rotation of the shell 1 and the cam 401, the pressure on the needles 301 on the needle plate 3 is gradually reduced, under the elastic force of the spring in the reset component 5, the needles 301 on the needle plate 3 upwards enter the retracting stroke, until it is extracted from the web and retracted into the housing 1, back to the initial position of the needles 301, and the next needle plate 3 begins to repeat the above steps as the housing 1 and cam 401 are further rotated relative to each other. When the fiber web moves forward at a high speed, the felting needles 301 which are penetrated into the fiber web are driven by the rotation of the shell 1 to also move in a short time and the same direction with the fiber web, and the felting needles penetrate into the fiber web at an angle towards the moving direction of the fiber web, namely continuously needled the fiber web in a similar rear-end collision mode, so that the surface layer of the fiber web can be better prevented from being marked by the straight-up and straight-down pulling motion of the felting needles when the felting needles retract, the surface smoothness of a finished product is ensured, and the production efficiency of the finished product is improved.

The above-described embodiments are only preferred embodiments of the present invention, and are not intended to limit the present invention in any way, and other variations and modifications may be made without departing from the spirit of the invention as set forth in the claims.