Needling mechanism and needling machine

Abstract

The invention relates to the technical field of non-woven fabrics, and discloses a needling mechanism and a needling machine.The needling mechanism comprises a needling needle, a piston at the tail end of the needling needle is connected with a sleeve shell, the front end of the sleeve shell is provided with an insertion opening for the needling needle to slide, and a through hole is formed in the center area of the bottom face of the insertion opening; and a steam release structure which is used for synchronously opening when the needling needle performs needling on the non-woven fabric and is pressed to move backwards in the insertion opening is movably mounted on the inner side of the through hole. When non-woven fabric raw materials are needled through the needling needles, the front ends of the needling needles make contact with the raw materials and then relatively move backwards under pressure, the corresponding cover plate can overcome the pressure of steam to move downwards, a gap between the cover plate and the sealing gasket ring is exposed, and at the moment, steam in the air storage chamber is sprayed out along the air holes; and the chips dispersed in the air are adsorbed, so that the chips fall into a non-woven fabric raw material group after being agglomerated, and the beneficial effects that the chips generated by needling can be locked into the raw material group when the non-woven fabric raw material is needled, and waste and pollution of the non-woven fabric raw material in the production link are reduced are achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of nonwoven fabrics, in particular to a needling mechanism and a needling machine. Background Art

[0002] Needle-punched nonwovens are a type of nonwoven fabric made from polyester or polypropylene fibers, processed through multiple needle punches and appropriate heat-pressing. Currently, fibers are typically processed directly and continuously into nonwoven fabrics on a single production line. Specifically, in this production line, oriented or randomly arranged fibers are combined through friction, cohesion, and bonding, and then repeatedly punctured perpendicularly to the surface of the nonwoven fabric using a needle loom or needle punch assembly. The demand for high-density nonwovens is growing, and producing these requires multiple needle punches. To achieve this, a common method is to increase the length of the needle bed (the length along the direction of the nonwoven's movement) and add more needle punches to the needle bed.

[0003] After searching, it was found that the prior art CN 205999587 U is a needling mechanism of a non-woven fabric needling machine. This technical solution is achieved by hingedly connecting one end of two transmission rods to two eccentric wheels respectively; the other ends of the two transmission rods are respectively hinged to the two ends of a triangular connecting block; the top of the triangular connecting block is hinged to the crossbeam; the two connecting rods pass through two guide bearings respectively, and one end of the two connecting rods is respectively hinged to the crossbeam; the other ends of the two connecting rods are respectively fixedly connected to the needle bed; the two eccentric wheels rotate in the same direction to ensure that the needling part stably reciprocates up and down.

[0004] Although the existing technical solutions have improved the stability of acupuncture, non-woven fabrics are made of polyester and polypropylene raw materials that are repeatedly needle-punched and then hot-pressed. During the needle-punching process, the needles repeatedly penetrate the raw materials, causing a large amount of debris to be generated in the raw materials. These debris will not be wrapped into the non-woven fabric due to the needle piercing, but will be carried out and fly due to the friction between the needles and the raw materials, which will not only cause waste of raw materials but also cause environmental pollution. Summary of the Invention

[0005] Technical issues solved:

[0006] In response to the shortcomings of the existing technology, the present invention provides a needling mechanism and a needling machine, which have the advantages of being able to lock the debris generated by needling into the raw material ball when needling non-woven fabric raw materials, thereby reducing the waste and pollution of non-woven fabric raw materials in the production process, and solving the above-mentioned technical problems.

[0007] Technical solution:

[0008] To achieve the above-mentioned object, the present invention provides the following technical solution: a needling mechanism, comprising a needle, wherein the piston at the rear end of the needle is connected to a housing, the front end of the housing is provided with a socket for the needle to slide, the central area of the bottom surface of the socket is provided with a through hole, the inner side of the through hole is movably mounted with a steam release structure that is synchronously activated when the needle is pressed and moves backward in the socket to puncture a non-woven fabric, the rear end of the housing is sealed with a steam hose through a flange, the front end of the steam hose extends into a gas storage chamber provided at the rear end of the inner side of the housing, the front end of the inner side of the gas storage chamber is connected to the steam release structure, and the front wall of the gas storage chamber is penetrated by the through hole;

[0009] The steam release structure includes a connecting rod connected to a piston in a through hole, the bottom of the connecting rod is connected to a cover plate, the top surface of the cover plate contacts a sealing gasket ring installed on the inner wall of the air storage chamber, the two overlap, and separate the area below the through hole and above the sealing gasket ring from the air storage chamber, and an air hole is opened on the inner wall of the area to penetrate the shell, and the air hole is opened obliquely toward the direction of the needle.

[0010] Preferably, a sealing ring is also installed on the inner side of the through hole, and the inner side of the sealing ring is slidably connected to the outer surface of the connecting rod. The part of the connecting rod that passes through the sealing ring and is located on the inner side of the socket is also connected to a baffle. The diameter of the baffle is larger than the sealing ring and is used to clamp the front end of the connecting rod to the sealing ring when the connecting rod moves toward the air storage chamber so that the entire rod will not be immersed in the air storage chamber.

[0011] Preferably, a spring is welded to the bottom inner side of the socket, the top of which is fixedly connected to the bottom surface of the needle, and the central area of the bottom of the spring overlaps with the through hole. The spring is used to lift the needle so that its bottom does not contact the connecting rod when the non-woven fabric is not being needled.

[0012] Preferably, the top of the connecting rod passes through the sealing ring and the bottom is fixedly connected to the baffle by welding. The surfaces of both are electroplated with aluminum-zinc alloy coating or sprayed with polytetrafluoroethylene to prevent rust on them by water vapor. The bottom of the connecting rod is fixed to the center of the top surface of the cover plate by welding. The surfaces of both are electroplated with aluminum-zinc alloy coating. The top surface of the cover plate contacts the bottom surface of the sealing gasket ring and the two fit tightly. The surface of the sealing gasket ring is also electroplated with aluminum-zinc alloy coating or sprayed with polytetrafluoroethylene. The technology used for the electroplating of aluminum-zinc alloy coating is a dry-type electroplating surface treatment method for zinc alloy with publication number CN108456851B, which belongs to the existing technology. Therefore, its ratio and electroplating process will not be described here, and its principle will not be repeated here.

[0013] Preferably, the front end of the connecting rod passes through the through hole and is connected to the bottom surface of the needle by welding, and the bottom of the connecting rod passes through the through hole and is fixedly connected to the top surface of the cover plate.

[0014] Preferably, the steam hose is further sleeved with an inverted conical gas cylinder with an open top at one end inside the gas storage chamber, the bottom diameter of the conical gas cylinder is larger than the top diameter, and the opening area is located in the central area of the bottom surface of the cover plate.

[0015] Preferably, the housing is also connected to a support plate that is arranged in a row or array. The shortest length of the support plate is to accommodate one row of housings, and when it is long, its own length is continuously extended to accommodate multiple rows of housings. The support plate itself has a receiving hole, and the inner side of the receiving hole is threaded or clamped to the tail end of the housing.

[0016] Preferably, the middle end portion of the needle close to the housing is fixedly mounted with a clamping ring surrounding the outer surface thereof, the diameter of the clamping ring is larger than the diameter of the socket, and the clamping ring is supported by a magnet.

[0017] Preferably, the cover plate and the connecting rod are arranged in a main channel arranged in the direction of the needle tip of the needle, the needle tip is provided with a plurality of preheating holes, the preheating holes are connected to the main channel, the cover plate includes a frame and a fan-shaped plate, the frame is fixedly set at the end of the connecting rod, the main channel passes through the frame, the fan-shaped plates are symmetrically arranged on both sides of the frame, the fan-shaped plates are hinged to the frame, and the fan-shaped plates and the frame are matched through a torsion spring.

[0018] Preferably, symmetrical wedge blocks are provided on the side walls of the air storage chamber, each wedge block cooperates with the corresponding sector plate, the tip of the wedge block is arranged toward the sealing gasket, and a sealing strip is connected between the two wedge blocks.

[0019] A needling machine includes a body, a driving source for driving needles for high-frequency needling is installed on the top of the body, the power source of the body is connected to the acupuncture mechanism mentioned above for needling non-woven fabrics, the body also includes a base arranged directly below the needling mechanism, the top middle of the base is recessed, the width of the recess corresponds to the width of the needling mechanism, the central area of the bottom surface of the recess is transported with fiber raw materials of non-woven fabrics through a conveyor belt, and sweeping plates are movably connected on both sides of the recess to swing toward the central area of the recess.

[0020] Preferably, a magnetic block that is magnetically attracted to a clamping ring is installed on one side of the sweeping plate close to the recess. The magnetic block is used to attract the clamping ring on which it is installed when the needle needle punches the fibers of the non-woven fabric downward, thereby driving the sweeping plate to swing toward the center area of the recess.

[0021] Compared with the prior art, the present invention provides a needling mechanism and a needling machine, which have the following beneficial effects:

[0022] 1. When the present invention uses a needle to needle-punch the non-woven fabric raw material, the front end of the needle is subjected to pressure and moves backward relative to the raw material after contacting the raw material. The corresponding cover plate will overcome the pressure of the steam and move downward, revealing the gap between itself and the sealing gasket ring. At this time, the steam inside the air storage chamber will enter the area below the through hole and above the sealing gasket ring from the gap, and then be ejected to the outside along the pores. Since the pore structure is guided to open to the non-woven fabric raw material below, the ejected steam with a temperature of 90 to 100 degrees will directly contact the non-woven fabric raw material. The high temperature will cause the non-woven fabric raw material to begin to soften, so that more debris will not be generated due to its own brittleness in the subsequent needling process. Furthermore, the 10% moisture carried by the steam itself will absorb the debris scattered in the air when contacting the non-woven fabric raw material, causing it to agglomerate and fall into the non-woven fabric raw material mass, thereby achieving the beneficial effect of locking the debris generated by needle-punching into the raw material mass when needle-punching the non-woven fabric raw material, thereby reducing the waste and pollution of the non-woven fabric raw material in the production process.

[0023] 2. When the present invention uses a needle to needle-punch the non-woven fabric raw material, its own pore structure is guided to open toward the non-woven fabric raw material below. Therefore, the steam ejected at a temperature of 90 to 100 degrees will directly contact the non-woven fabric raw material. The high temperature will cause the non-woven fabric raw material to begin to soften, thereby achieving the beneficial effect of softening the raw material in advance during the needle-punching process and improving the efficiency of subsequent hot pressing.

[0024] 3. In the present invention, when the needle is needling downward, the clamping ring installed on the needle attracts the magnetic block, and the magnetic block attracts the clamping ring installed on the needle when the needle is needling the fibers of the non-woven fabric downward, thereby driving the sweeping plate to swing toward the center area of the depression, gathering the non-woven fabric raw material clumps dispersed by needling to the center, achieving the beneficial effect of gathering the needled raw materials during needling.

[0025] 4. When the needle is inserted, the connecting rod drives the fan-shaped plate to move, and the fan-shaped plate cooperates with the wedge block to open the fan-shaped plate, and the skeleton contacts the blocking strip. The steam is discharged directly through the pores of the opened fan-shaped plate, which increases the ventilation volume. The whole scheme generally increases the action time of steam, links the needle to soften the non-woven fabric at high temperature, and improves the softening effect of the non-woven fabric. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the structure of the machine body of the present invention;

[0027] Figure 2 It is a schematic front cross-sectional view of the machine body structure of the present invention;

[0028] Figure 3 This is a schematic diagram of the support plate structure of the present invention in an array form;

[0029] Figure 4 This is a schematic diagram of the arrangement of the support plate structure of the present invention;

[0030] Figure 5 This is a normal cross-sectional view of a shell structure according to an embodiment of the present invention;

[0031] Figure 6 This is a front cross-sectional diagram of a shell structure in a compressed state according to an embodiment of the present invention;

[0032] Figure 7 This is a schematic diagram of an internal socket in a housing structure according to an embodiment of the present invention;

[0033] Figure 8 This is a front cross-sectional view of the second shell structure of the present invention;

[0034] Figure 9 This is a schematic front cross-sectional view of the third shell structure of the embodiment of the present invention;

[0035] Figure 10 for Figure 9 A partial enlarged view of point A in the middle.

[0036] Among them: 1. body; 101. base; 102. sweeping plate; 2. needle; 201. main channel; 202. preheating hole; 3. casing; 301. socket; 302. spring; 1. sealing ring; 2. baffle; 304. air storage chamber; 305. air hole; 306 wedge block; 307. sealing strip; 4. steam hose; 401. conical air cylinder; 5. connecting rod; 501. cover plate; 5011. frame; 5012. fan plate; 502. sealing gasket; 6. support plate; 601. receiving hole; 7. snap ring. DETAILED DESCRIPTION

[0037] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0038] See also Figure 1-8 A needling mechanism includes a needle 2, the tail end of the needle 2 is connected to a casing 3 by a piston, the front end of the casing 3 is provided with a socket 301 for the needle 2 to slide, a through hole is provided in the center area of the bottom surface of the socket 301, and a steam release structure is movably installed inside the through hole for the needle 2 to needle the non-woven fabric when it is pressed and moves backward in the socket 301. The tail end of the casing 3 is sealed and connected to a steam hose 4 through a flange. The front end of the steam hose 4 extends into an air storage chamber 304 provided at the rear end of the inner side of the casing 3. The front end of the inner side of the air storage chamber 304 is connected to the steam release structure, and the front wall is penetrated by a through hole.

[0039] The steam release structure includes a piston connected to a connecting rod 5 in a through hole, the bottom of the connecting rod 5 is connected to a cover plate 501, the top surface of the cover plate 501 contacts a sealing gasket 502 installed on the inner wall of the air storage chamber 304, and the two overlap, separating the area below the through hole and above the sealing gasket 502 from the air storage chamber 304. An air hole 305 is provided on the side wall of the area, penetrating the shell 3, and the air hole 305 is inclined toward the direction of the needle 2.

[0040] Furthermore, the clamping ring 7 also has the function of limiting the needle 2 to prevent the needle from penetrating too deeply into the housing 3.

[0041] Example 1

[0042] The housing 3 connected to the needle 2 has a spring 302 inside. At this time, multiple such housings 3 are installed on the support plate 6, so that the sharp part of the needle 2 is aligned downward with the concave area of the base 101, and the support plate 6 is connected to the driving source by bolts. Since the driving source is not improved in this application, it still uses a traditional driving structure, such as patent CN 205999587 U or the driving method disclosed in the prior art of CN113957613B, the up and down cyclic movement of the support plate 6 by the power source will drive the sleeve 3 connected to the bottom of the support plate 6 to move up and down together, so that the needle 2 connected to the sleeve 3 repeatedly acupunctures the concave area of the substrate 101, because the clamping ring 7 installed by the needle 2 is attracted to the magnetic block 103 when the needle 2 acupunctures the fibers of the non-woven fabric downward, and the magnetic block 103 is attracted to the clamping ring 7 installed with the needle 2 when the needle 2 acupunctures the fibers of the non-woven fabric downward, thereby driving the sweeping plate 102 to swing toward the center area of the concave part, and gathering the non-woven fabric raw material group dispersed by the acupuncture to the middle. Further, the steam hose 4 of the present application is also connected Connect the steam generator, the steam generator belongs to the existing mature technology. This application only uses the steam generated by the steam generator, so the device is not described in the drawings. The device can be purchased directly on the market, such as the steam generator model LPT-ACE-540KW. The steam of the steam generator is further introduced into the gas storage chamber 304 through the steam hose 4 using an air pump to increase the pressure. Since the high-temperature steam gas directly enters the gas storage chamber 304, it will form a supercharged pressure on it. Therefore, the cover plate 501 will be pushed forward by the gas to cover the bottom of the sealing gasket ring 502. Since the two are in contact, the cover plate 501 is not as shown in the drawings of the specification. It is hollow, so steam with a temperature of 100 to 90 degrees Celsius and a moisture content of 10%-30% cannot enter the area above the cover plate 501. Then, when the needle 2 punctures the non-woven fabric material, the front end of the needle 2 contacts the material and is subjected to pressure to move backward relatively. At this time, the tail end of the needle 2 first compresses the spring 302 and then contacts the baffle 2 at the top of the connecting rod 5, pressing it down to the top surface of the sealing ring 1. At this time, due to the downward movement of the connecting rod 5, the cover plate 501 connected to its bottom will overcome the pressure of the steam and move downward, revealing the gap between itself and the sealing gasket ring 502. At this time, the steam inside the air storage chamber 304 will enter the bottom of the through hole and the sealing ring 1 through the gap. The steam flows through the area above the sealing ring 502 and then ejects to the outside along the air hole 305. Since the structure of the air hole 305 is oriented to open to the non-woven fabric below, the steam ejected at a temperature of 90 to 100 degrees will directly contact the non-woven fabric. The high temperature will cause the non-woven fabric to soften, so that in the subsequent needling process, more debris will not be generated due to its own brittleness. Furthermore, the 10% moisture carried by the steam itself will absorb the scattered debris in the air when it contacts the non-woven fabric, causing it to agglomerate and fall into the non-woven fabric mass. Moreover, because the moisture content is only 10%, the water content of the raw material will not be excessive due to multiple jets.After multiple needling, the raw material mass is hot pressed to obtain the finished product. The hot pressing and finished product steps are not the objects to be protected by this application, so they will not be described in detail here.

[0043] Example 2

[0044] The housing 3 to which the needle 2 is connected does not have a spring 302, and the front end of the connecting rod 5 passes through the through hole and is connected to the bottom surface of the needle 2 by welding. The bottom of the connecting rod 5 passes through the through hole and is fixedly connected to the top surface of the cover plate 501. The further installation steps of the housing 3 are the same as those in Example 1, so this embodiment will not be repeated. When the power source drives the support plate 6 to perform a needle-punching operation on the non-woven fabric raw material ball in an up and down cycle, the needle 2 at the front end of the housing 3 first contacts the non-woven fabric raw material ball, and then the needle 2 moves backward by itself under the interaction of forces. Since the connecting rod 5 is directly connected to the cover plate 501 and the needle 2, the needle 2 will directly drive the cover plate 501 to move backward when it retreats, exposing the gap between the cover plate 501 and the sealing gasket ring 502. At this time, steam enters the cover plate from the gap. The area above 501 is then ejected to the outside along the air hole 305. Since the structure of the air hole 305 is guided to open to the non-woven fabric raw material below, the ejected steam with a temperature of 90 to 100 degrees will directly contact the non-woven fabric raw material. The high temperature will cause the non-woven fabric raw material to begin to soften, so that in the subsequent acupuncture process, no more debris will be generated due to its own brittleness. Furthermore, when the power source drives the support plate 6 away from the non-woven fabric raw material group, the conical air cylinder 401 has the function of gathering airflow, and its pressure is greater than the steam hose 4 of the first embodiment without the conical air cylinder installed. At this time, the higher-pressure gas directly impacts the cover plate 501 to move it upward and contact the sealing gasket ring 502, re-seal the area above the cover plate 501, and close the air hole.

[0045] When in use, the support plate 6 is connected to the power source part of the body 1 by traditional installation means, and the up and down cyclic movement of the support plate 6 by the power source will drive the sleeve 3 connected to the bottom of the support plate 6 to move up and down together, so that the needle 2 connected to the sleeve 3 repeatedly punctures the recessed area of the substrate 101. As the needle 2 punctures downward, the clamping ring 7 installed on itself is attracted to the magnetic block, and the magnetic block is attracted to the clamping ring 7 installed with it when the needle 2 punctures the fibers of the non-woven fabric downward, thereby driving the sweeping plate 102 to swing toward the center area of the recess, and gathering the non-woven fabric raw material clumps dispersed by the puncture to the middle, and further through the steam hose 4, the steam of the steam generator is pressurized by the air pump and introduced into the air storage chamber 304. Then, when the needle 2 punctures the non-woven fabric raw material, the front end of the needle 2 contacts The raw materials are subjected to pressure and move backward relative to each other. The corresponding cover plate 501 will overcome the pressure of the steam and move downward, revealing the gap between itself and the sealing gasket ring 502. At this time, the steam inside the air storage chamber 304 will enter the area below the through hole and above the sealing gasket ring 502 from the gap, and then be ejected to the outside along the air hole 305. Since the structure of the air hole 305 is guided to open to the non-woven raw material below, the ejected steam with a temperature of 90 to 100 degrees will directly contact the non-woven raw material. The high temperature will cause the non-woven raw material to begin to soften, so that in the subsequent needling process, more debris will not be produced due to its own brittleness. Furthermore, the 10% of water carried by the steam itself will absorb the debris scattered in the air when it contacts the non-woven raw material, causing it to agglomerate and fall into the non-woven raw material group.

[0046] Example 3

[0047] Based on the above embodiments, Figure 9 、 Figure 10 As shown, the cover plate 501 and the connecting rod 5 are provided with a main channel 201 arranged in the direction of the needle tip of the needle 2, and a plurality of preheating holes 202 are provided at the needle tip of the needle 2. The preheating holes 202 are connected to the main channel 201. The cover plate 501 includes a frame 5011 and a fan-shaped plate 5012. The frame 5011 is fixedly provided at the end of the connecting rod 5. The main channel 201 passes through the frame 5011. The fan-shaped plates 5012 are symmetrically provided on both sides of the frame 5011. The fan-shaped plates 5012 are symmetrically provided on both sides of the frame 5011. 11 is hinged, and the fan-shaped plate 5012 and the skeleton 5011 are arranged in conjunction with each other through a torsion spring; symmetrical wedge blocks 306 are arranged on the side wall of the air storage chamber 304, and each wedge block 306 is respectively matched with the corresponding fan-shaped plate 5012, and the tip of the wedge block 306 is set toward the sealing gasket ring 502, and a blocking strip 307 is connected between the two wedge blocks 306. When the needle 2 is fully retracted to the bottom of the socket 301, the blocking strip 307 blocks the main channel 201.

[0048] When the needle 2 does not penetrate, the skeleton 5011 is separated from the blocking strip 307, the sector plate 5012 is closed and pressed on the sealing ring 502, and the air in the air storage chamber 304 passes through the main channel 201 directly to the preheating hole 202 of the needle tip, and steam is sprayed to the non-woven fabric through the needle tip, and the needle 2 is also heated at the same time, so that the non-woven fabric can be softened by high temperature even when the needle 2 does not penetrate. Moreover, the heated needle 2 will also soften the non-woven fabric when it penetrates the non-woven fabric. Heating; when the needle 2 is inserted, the connecting rod 5 drives the fan-shaped plate 5012 to move, and the fan-shaped plate 5012 cooperates with the wedge block 306 to open the fan-shaped plate 5012, and the skeleton 5011 contacts the blocking strip 307. The steam is discharged directly through the air hole 305 through the opened fan-shaped plate 5012, thereby increasing the ventilation volume. The whole scheme generally increases the action time of the steam, and links the needle 2 to soften the non-woven fabric at high temperature, thereby improving the softening effect of the non-woven fabric.

[0049] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A needle puncture mechanism, comprising a needle (2), characterized in that: The piston at the tail end of the needle (2) is connected to the housing (3), the front end of the housing (3) is provided with a socket (301) for the needle (2) to slide, the central area of the bottom surface of the socket (301) is provided with a through hole (), the inner side of the through hole () is movably provided with a steam release structure that is opened synchronously when the needle (2) is pressed and moves backward in the socket (301) for acupuncture of the non-woven fabric, the tail end of the housing (3) is sealed and connected to the steam hose (4) through a flange, the front end of the steam hose (4) is deeply extended into the gas storage chamber (304) provided at the rear end of the inner side of the housing (3), the front end of the inner side of the gas storage chamber (304) is connected to the steam release structure, and the front wall is penetrated by the through hole (); The steam release structure includes a connecting rod (5) connected to a piston in a through hole (), the bottom of the connecting rod (5) is connected to a cover plate (501), the top surface of the cover plate (501) contacts a sealing ring (502) installed on the inner wall of the air storage chamber (304), and the two overlap, thereby isolating the area below the through hole () and above the sealing ring (502) from the air storage chamber (304), and the side wall in the area is provided with an air hole (305) penetrating the shell (3), and the air hole (305) is opened obliquely toward the direction of the needle (2).

2. The acupuncture mechanism according to claim 1, characterized in that: A sealing collar (1) is also installed on the inner side of the through hole (), and the inner side of the sealing collar (1) is slidably connected to the outer surface of the connecting rod (5). The portion of the connecting rod (5) passing through the sealing collar (1) and located on the inner side of the socket (301) is also connected to a baffle (2). The baffle (2) has a diameter larger than the sealing collar (1) and is used to clamp the front end of the connecting rod (5) with the sealing collar (1) when the connecting rod (5) moves toward the air storage chamber (304) so that the connecting rod (5) does not completely sink into the air storage chamber (304).

3. The acupuncture mechanism according to claim 2, characterized in that: A spring (302) is welded to the bottom of the inner side of the socket (301), the top of which is fixedly connected to the bottom surface of the needle (2). The center area of the bottom of the spring (302) overlaps with the through hole (). The spring (302) is used to lift the needle (2) so that its bottom does not contact the connecting rod (5) when the non-woven fabric is not being needled.

4. The acupuncture mechanism according to claim 3, characterized in that: The top of the connecting rod (5) passes through the sealing collar (1) and the bottom is fixedly connected to the baffle (2) by welding. The surfaces of the two are electroplated with an aluminum-zinc alloy coating or sprayed with polytetrafluoroethylene to prevent them from being corroded by water vapor. The bottom of the connecting rod (5) is fixed to the center of the top surface of the cover plate (501) by welding. The surfaces of the two are electroplated with an aluminum-zinc alloy coating. The top surface of the cover plate (501) contacts the bottom surface of the sealing ring (502) and the two are tightly fitted. The surface of the sealing ring (502) is also electroplated with an aluminum-zinc alloy coating or sprayed with polytetrafluoroethylene.

5. The acupuncture mechanism according to claim 1, characterized in that: The front end of the connecting rod (5) passes through the through hole () and is connected to the bottom surface of the needle (2) by welding. The bottom of the connecting rod (5) passes through the through hole () and is fixedly connected to the top surface of the cover plate (501). The steam hose (4) is located inside the gas storage chamber (304). One end is also sleeved with an inverted conical gas cylinder (401) with an open top. The bottom diameter of the conical gas cylinder (401) is larger than the top diameter, and the opening area is located at the center area of the bottom surface of the cover plate (501).

6. The acupuncture mechanism according to claim 4 or 5, characterized in that: The housing (3) is further connected to a support plate (6) that is arranged in a row or array. The support plate (6) is short enough to accommodate one row of housings (3). When it is long, its length is continuously extended to accommodate multiple rows of housings (3). The support plate (6) itself has a receiving hole (601). The inner side of the receiving hole (601) is threadedly connected or clamped to the rear end of the housing (3).

7. The acupuncture mechanism according to claim 6, characterized in that: A clamping ring (7) surrounding the outer surface of the needle is fixedly mounted on the middle end portion of the needle close to the housing (3); the diameter of the clamping ring (7) is larger than the diameter of the socket (301); and the clamping ring (7) is supported by a magnet.

8. The acupuncture mechanism according to claim 1, characterized in that: The cover plate (501) and the connecting rod (5) are provided with a main channel (201) arranged in the direction of the needle tip of the pricking needle (2). The needle tip of the pricking needle (2) is provided with a plurality of preheating holes (202). The preheating holes (202) are communicated with the main channel (201). The cover plate (501) comprises a frame (5011) and a fan-shaped plate (5012). The frame (5011) is fixedly provided at the end of the connecting rod (5). The main channel (201) passes through the frame (5011). The fan-shaped plates (5012) are symmetrically provided on both sides of the frame (5011). The fan-shaped plates (5012) are hinged to the frame (5011). The fan-shaped plates (5012) and the frame (5011) are arranged in cooperation with each other via a torsion spring.

9. The acupuncture mechanism according to claim 8, characterized in that: Symmetrical wedge blocks (306) are provided on the side walls of the air storage chamber (304), each wedge block (306) is matched with a corresponding fan-shaped plate (5012), the tip of the wedge block (306) is arranged toward the sealing gasket ring (502), and a sealing strip (307) is connected between the two wedge blocks (306).

10. A needling machine, comprising a machine body (1), wherein a driving source for driving needles (2) for high-frequency needling is mounted on the top of the machine body (1), characterized in that: The power source of the machine body (1) is connected to the needling mechanism according to any one of claims 1 to 9 for needling nonwoven fabrics.

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