Preparation device and process of carboxymethyl non-woven fabric

Abstract

The invention relates to the field of non-woven fabric preparation, in particular to a carboxymethyl non-woven fabric preparation device and process, the carboxymethyl non-woven fabric preparation device comprises a needling machine body and a reciprocating motion mechanism arranged on the needling machine body, a connecting plate is connected to the reciprocating motion mechanism, a needle plate is arranged on the connecting plate in a sliding mode, and a second driving motor is arranged on the connecting plate; the adjusting seat is rotationally arranged on the connecting plate, and the adjusting seat is driven to rotate through a driving motor II; according to the preparation device of the carboxymethyl non-woven fabric, when the reciprocating movement distance of a needle plate needs to be adjusted, a worm is rotated, a spline shaft is rotated through a worm gear, a spline housing drives a half shaft A to slide in a sliding groove of a needle machine body and rotate at the same time, the half shaft A drives a half shaft B to rotate through a planetary bevel gear, and then a lead screw is rotated; the L-shaped sliding block is driven to slide on the lead screw and the sliding rod, and the position of the cross rod on the adjusting seat is changed, so that the reciprocating distance of the needle plate on the connecting plate is changed.

Description

Technical Field

[0001] The invention belongs to the technical field of non-woven fabric preparation, and particularly relates to a preparation device and process for carboxymethyl non-woven fabric. Background Art

[0002] Carboxymethyl non-woven fabric is a kind of non-woven material that has been specially modified. It is based on non-woven fabric, and carboxymethyl groups are introduced into the surface or inside of the fiber by chemical methods. This modification makes the non-woven fabric have some unique properties, such as good hydrophilicity and the ability to quickly absorb water. In the medical and health field, it can be used to make wound dressings and sanitary products with good water absorption. The needle punching machine plays a key role in the preparation of non-woven fabrics. It repeatedly punctures the fluffy and messy fiber net with a barbed needle, giving the fibers strong squeezing and entanglement in the vertical direction. When the needle moves up and down, the surface fibers are pierced into the fiber net, causing the fibers to hook and entangle with each other, thereby increasing the friction and cohesion between the fibers, and reinforcing the originally loose fiber net into a non-woven fabric with a certain thickness, strength and stability.

[0003] In the current non-woven fabric needle punching equipment, in order to avoid the needles from pulling the non-woven fabric during transportation, needle plates with elliptical trajectories are often used to increase the time the needle plates stay on the non-woven fabric. According to the product thickness, purpose, raw material differences and production requirements, it is necessary to change the needle density and the transportation speed of the non-woven fabric. However, when the transportation speed of the non-woven fabric changes or the needle punching speed of the needle plate changes, the time the needle plate stays on the surface of the non-woven fabric is difficult to match the movement speed of the non-woven fabric, which can easily cause the needles on the needle plate to stretch the non-woven fabric, thereby causing floating fibers to form on the surface of the non-woven fabric, affecting the product quality. Therefore, a preparation device and process for carboxymethyl non-woven fabric are proposed. Summary of the invention

[0004] The purpose of the present invention is to provide a device and process for preparing carboxymethyl non-woven fabric with adjustable needle plate reciprocating motion distance in order to solve the above problems.

[0005] The present invention achieves the above-mentioned purpose through the following technical solutions: A preparation device for carboxymethyl nonwoven fabrics, comprising a needle loom body and a reciprocating mechanism arranged on the needle loom body, the reciprocating mechanism is connected to a connecting plate, a needle plate is slidably arranged on the connecting plate, and a second driving motor is arranged on the connecting plate; Also included are: An adjustment seat, the adjustment seat is rotatably arranged on the connecting plate, and the adjustment seat is driven to rotate by a second driving motor; A cross bar, wherein the cross bar is slidably arranged on the adjustment seat, and a vertical plate is arranged on the needle plate, and the vertical plate drives the needle plate to reciprocate on the connecting plate by following the rotation of the adjustment seat through the cross bar; A moving mechanism, which is arranged on an adjusting seat. By means of the moving mechanism, a cross bar slides on the adjusting seat, thereby changing the reciprocating movement distance of the needle plate on the connecting plate. The reciprocating motion mechanism includes an eccentric wheel. A driving motor I is arranged on the main body of the needle punching machine. A rotating rod is arranged at the output end of the driving motor I. The eccentric wheel is fixedly arranged on the rotating rod. A swing wheel is rotatably sleeved on the eccentric wheel. A limiting seat is arranged on the main body of the needle punching machine. A moving rod is slidably arranged on the limiting seat. The moving rod is hinged to the swing wheel. The lower end of the moving rod is fixedly connected to the connecting plate.

[0006] As a further optimized scheme of the present invention, mounting seats are arranged at both ends of the connecting plate. An L-shaped plate is arranged on one side of the mounting seat. A guide rail is arranged on the lower surface of the mounting seat. The needle plate is slidably arranged on the mounting seat through the guide rail. A sleeve rod is rotatably arranged on the mounting seat. The adjusting seat is rotatably arranged on the mounting seat through the sleeve rod. Synchronous wheels are arranged at the output end of the driving motor II and on the sleeve rod respectively. A synchronous belt is connected between these synchronous wheels. A differential mechanism is connected to the sleeve rod.

[0007] As a further optimized scheme of the present invention, the moving mechanism includes a lead screw. The lead screw is rotatably arranged on one of the adjusting seats. A slide bar is fixedly arranged on the other adjusting seat. L-shaped sliders are arranged on both the lead screw and the slide bar. The L-shaped slider is threadedly connected to the lead screw and slidably connected to the slide bar. One end of the L-shaped slider is slidably arranged on the adjusting seat. The cross bar is arranged between the two L-shaped sliders. A half shaft B is rotatably arranged in one of the sleeve rods. Bevel gears are fixedly arranged on both the half shaft B and the lead screw. The two bevel gears are meshed with each other.

[0008] As a further optimized scheme of the present invention, the differential mechanism includes a planet carrier. The planet carrier is fixedly arranged on the sleeve rod. An extension plate is arranged on the planet carrier. A planetary bevel gear is rotatably arranged on the extension plate. The half shaft B penetrates through the planet carrier. A half shaft A is rotatably arranged on the L-shaped plate. Half shaft bevel gears are fixedly arranged on both the half shaft A and the half shaft B. The two half shaft bevel gears are meshed and connected to the planetary bevel gear.

[0009] As a further optimized scheme of the present invention, a pressing plate is arranged on the main body of the needle punching machine. The pressing plate is located below the needle plate. A plurality of strip holes are formed in the pressing plate. The needle on the needle plate penetrates through the strip holes. Slide grooves are formed on both sides of the main body of the needle punching machine. The half shaft A is slidably arranged in the slide groove. A spline connection mechanism is connected to the half shaft A.

[0010] As a further optimized solution of the present invention, the spline connection mechanism includes a spline shaft rotatably provided on one side of the needle punching machine main body. A connecting seat is sleeved on the half shaft A, and a spline sleeve is provided on the connecting seat. The spline sleeve is slidably provided on the spline shaft. Cone gears III are fixedly provided on both the half shaft A and the spline sleeve, and the two cone gears III are engaged with each other. A worm is rotatably provided on the needle punching machine main body, and a worm gear is fixedly provided on the spline shaft. The worm gear and the worm are engaged with each other, and a handle is provided on the worm.

[0011] As a further optimized solution of the present invention, a moving groove is provided on the vertical plate, and the cross bar passes through the vertical plate through the moving groove, and the cross bar can slide in the moving groove.

[0012] A preparation process for carboxymethyl non-woven fabric of a carboxymethyl non-woven fabric preparation device is as follows: S1: Select natural cellulose fiber or regenerated cellulose fiber as the base material, and crush and swell it. S2: Immerse the fiber in a sodium hydroxide solution and stir to generate alkali cellulose, and then add chloroacetic acid as an etherifying agent and stir. S3: Neutralize the reaction solution with dilute hydrochloric acid to neutrality, terminate the reaction, perform centrifugation or pressing dehydration to obtain wet carboxymethylated fiber, and then dry it. S4: Form a fluffy network structure by air-laying carboxymethylated fiber. S5: Repeatedly puncture the fiber web through the needle punching machine main body to entangle the fibers, and adjust the distance of the cross bar on the adjusting seat according to the transportation speed of the fiber web, so as to increase the moving distance of the needle plate. S6: Heat and bond through a hot pressing roller, and then perform calendering, slitting, winding, or perform antibacterial and hydrophobic functional coating treatments.

[0013] The beneficial effects of the present invention are as follows: Different from the prior art, during actual use, when it is necessary to adjust the reciprocating moving distance of the needle plate, rotate the worm, drive the spline shaft to rotate through the worm gear, drive the half shaft A to slide and rotate in the sliding groove of the needle punching machine main body by the spline sleeve, drive the half shaft B to rotate by the planetary bevel gear through the half shaft A, and then drive the lead screw to rotate, drive the L-shaped slider to slide on the lead screw and the slide bar, change the position of the cross bar on the adjusting seat, and thus change the reciprocating moving distance of the needle plate on the connecting plate. In this way, when the transportation speed of the non-woven fabric changes or the reciprocating movement speed of the needle plate changes, the reciprocating moving distance of the needle plate can be changed without stopping the machine, so that the time for the needle plate to stay on the surface of the non-woven fabric matches the moving speed of the non-woven fabric, avoiding the needles on the needle plate from stretching the non-woven fabric and causing floating filaments on the surface of the non-woven fabric, and ensuring the quality stability of the product. Description of the Drawings

[0014] Figure 1 is a schematic diagram of the overall structure of the present invention; Figure 2 is a schematic diagram of the reciprocating motion mechanism structure of the present invention; Figure 3 is a schematic diagram of the connection structure of the connecting plate of the present invention; Figure 4 is the present invention Figure 3 schematic enlarged view of the structure at A in; Figure 5 is the present invention Figure 3 schematic enlarged view of the structure at B in; Figure 6 is a schematic diagram of the moving mechanism structure of the present invention; Figure 7 is a schematic diagram of the spline connection mechanism structure of the present invention; Figure 8 is a schematic diagram of the pressing plate structure of the present invention; Figure 9 is the present invention Figure 8 schematic enlarged view of the structure at C in.

[0015] In the figure: 1, the main body of the needle punching machine; 2, the reciprocating motion mechanism; 21, the eccentric wheel; 22, the pendulum wheel; 23, the moving rod; 24, the limiting seat; 3, the first driving motor; 31, the rotating rod; 4, the needle plate; 41, the pressing plate; 411, the strip hole; 5, the connecting plate; 51, the mounting seat; 511, the L-shaped plate; 52, the guide rail; 6, the differential mechanism; 61, the planet carrier; 62, the planetary bevel gear; 621, the extension plate; 63, the half shaft bevel gear; 64, the half shaft A; 7, the adjusting seat; 71, the sleeve rod; 8, the moving mechanism; 81, the lead screw; 82, the L-shaped slider; 83, the half shaft B; 84, the bevel gear; 85, the slide bar; 9, the cross bar; 91, the vertical plate; 911, the moving groove; 10, the spline connection mechanism; 101, the spline shaft; 102, the spline sleeve; 1021, the connecting seat; 103, the third bevel gear; 104, the worm; 1041, the worm wheel; 11, the handle; 12, the second driving motor; 121, the synchronous belt. Detailed implementation manners

[0016] The following further describes the present application in detail with reference to the accompanying drawings. It is necessary to point out here that the following specific implementation manners are only used to further illustrate the present application and cannot be understood as limiting the protection scope of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application according to the above application content.

[0017] Example 1 As Figure 1 - Figure 9As shown in the figure, a preparation device for carboxymethyl non-woven fabric includes a main body 1 of a needling machine and a reciprocating motion mechanism 2 arranged on the main body 1 of the needling machine. A connecting plate 5 is connected to the reciprocating motion mechanism 2. A needle plate 4 is slidably arranged on the connecting plate 5. A pressing plate 41 is arranged on the main body 1 of the needling machine. The pressing plate 41 is located below the needle plate 4. A plurality of strip holes 411 are opened on the pressing plate 41. The strip holes 411 allow the needles on the elliptical moving needle plate 4 to have a certain moving space. The needles on the needle plate 4 penetrate through the strip holes 411. When using this preparation device, the reciprocating motion mechanism 2 drives the connecting plate 5 to reciprocate up and down, and the connecting plate 5 drives the needle plate 4 to reciprocate up and down. During the reciprocating motion, the pressing plate 41 plays a role in supporting and positioning, ensuring that the non-woven fabric remains flat during the needling process, and the needles can vertically and accurately puncture the fiber web, improving the uniformity and stability of the needling effect, and helping to improve the overall quality of the non-woven fabric.

[0018] This preparation device further includes a second driving motor 12, and the second driving motor 12 is arranged on the connecting plate 5: An adjusting seat 7 is rotatably arranged on the connecting plate 5. The adjusting seat 7 is driven to rotate by the second driving motor 12. Installation seats 51 are arranged at both ends of the connecting plate 5. An L-shaped plate 511 is arranged on one side of the installation seat 51. A guide rail 52 is arranged on the lower surface of the installation seat 51. The needle plate 4 is slidably arranged on the installation seat 51 through the guide rail 52. A sleeve rod 71 is rotatably arranged on the installation seat 51. The adjusting seat 7 is rotatably arranged on the installation seat 51 through the sleeve rod 71. Synchronous wheels are arranged on the output end of the second driving motor 12 and the sleeve rod 71 respectively, and a synchronous belt 121 is connected between the synchronous wheels. The second driving motor 12 drives the sleeve rod 71 to rotate through the synchronous belt 121, and then makes the adjusting seat 7 rotate. This transmission method has the characteristics of accurate transmission ratio, etc., so that when the needle plate 4 makes a single reciprocating motion in the vertical direction, the adjusting seat 7 can also rotate one week, accurately controlling the rotation of the adjusting seat 7.

[0019] A cross bar 9 is arranged on the adjusting seat 7, and a vertical plate 91 is arranged on the needle plate 4. By the cross bar 9 following the rotation of the adjusting seat 7, the vertical plate 91 drives the needle plate 4 to reciprocate on the connecting plate 5. A moving groove 911 is opened on the vertical plate 91. The cross bar 9 penetrates through the vertical plate 91 through the moving groove 911. The cross bar 9 can slide in the moving groove 911. When the adjusting seat 7 rotates, the cross bar 9 follows the rotation. The cross bar 9 slides in the moving groove 911 of the vertical plate 91, and at the same time drives the needle plate 4 to reciprocate back and forth on the guide rail 52 of the connecting plate 5 through the moving groove 911 on the vertical plate 91. This structural design increases the residence time of the needle plate 4 on the non-woven fabric, which helps the fibers to entangle more fully.

[0020] A moving mechanism 8 is provided on the adjusting base 7. Through the moving mechanism 8, the cross bar 9 slides on the adjusting base 7, thereby changing the reciprocating movement distance of the needle plate 4 on the connecting plate 5. The moving mechanism 8 includes a lead screw 81. The lead screw 81 is rotatably arranged on one of the adjusting bases 7, and a slide bar 85 is fixedly arranged on the other adjusting base 7. L-shaped sliders 82 are arranged on both the lead screw 81 and the slide bar 85. The L-shaped slider 82 is threadedly connected to the lead screw 81 and slidably connected to the slide bar 85. One end of the L-shaped slider 82 is slidably arranged on the adjusting base 7, and the cross bar 9 is arranged between the L-shaped sliders 82. A half shaft B 83 is rotatably arranged in one of the sleeve rods 71. Conical gears 84 are fixedly arranged on both the half shaft B 83 and the lead screw 81, and the conical gears 84 are meshed with each other. By rotating the lead screw 81, the L-shaped slider 82 can be driven to slide on the lead screw 81 and the slide bar 85, changing the position of the cross bar 9 on the adjusting base 7, and further adjusting the reciprocating movement distance of the needle plate 4.

[0021] A differential mechanism 6 is connected to the sleeve rod 71. The differential mechanism 6 includes a planet carrier 61. The planet carrier 61 is fixedly arranged on the sleeve rod 71. An extension plate 621 is arranged on the planet carrier 61. A planetary bevel gear 62 is rotatably arranged on the extension plate 621. The half shaft B 83 penetrates through the planet carrier 61. A half shaft A 64 is rotatably arranged on the L-shaped plate 511. Half shaft bevel gears 63 are fixedly arranged on both the half shaft A 64 and the half shaft B 83. The planetary bevel gear 62 and the half shaft bevel gear 63 are of the same model, and the half shaft bevel gear 63 is meshed with the planetary bevel gear 62. When the half shaft A 64 is subjected to resistance and cannot rotate, in addition to rotating with the planet carrier 61, the planetary bevel gear 62 will also rotate around its own axis through the half shaft bevel gear 63 on the half shaft A 64, thereby driving the half shaft bevel gear 63 on the half shaft B 83 to rotate. In this way, after the planetary bevel gear 62 makes one revolution around the planet carrier 61, since the planetary bevel gear 62 and the half shaft bevel gear 63 are of the same model, the planetary bevel gear 62 also makes one revolution by itself. Therefore, the half shaft B 83 makes one revolution, and thus the conical gear 84 on the half shaft B 83 makes one revolution. Since the planet carrier 61 is arranged on the sleeve rod 71, the adjusting base 7 and the half shaft B 83 rotate synchronously and in the same direction for one revolution. Therefore, at this time, the conical gears 84 on the half shaft B 83 and the lead screw 81 do not rotate relative to each other, so that the cross bar 9 does not move up and down on the lead screw 81.

[0022] On both sides of the main body 1 of the needling machine, sliding grooves are provided. The half shaft A64 is slidably arranged in the sliding grooves. A spline connection mechanism 10 is connected to the half shaft A64. The spline connection mechanism 10 includes a spline shaft 101. The spline shaft 101 is rotatably arranged on one side of the main body 1 of the needling machine. A connection seat 1021 is sleeved on the half shaft A64. A spline sleeve 102 is arranged on the connection seat 1021. The spline sleeve 102 is slidably arranged on the spline shaft 101. Bevel gears three 103 are fixedly arranged on both the half shaft A64 and the spline sleeve 102. The bevel gears three 103 are engaged with each other. A worm 104 is rotatably arranged on the main body 1 of the needling machine. A worm gear 1041 is fixedly arranged on the spline shaft 101. The worm gear 1041 is engaged with the worm 104. When the worm gear 1041 attempts to drive the worm 104, due to the helix angle being smaller than the equivalent friction angle, a large frictional force will be generated between the contact surfaces. This frictional force will prevent the worm 104 from rotating, making it impossible for the worm gear 1041 to effectively drive the worm 104, thereby achieving self-locking. In this way, through the one-way self-locking between the worm gear 1041 and the worm 104, the half shaft A64 can only be driven to rotate by rotating the worm 104. A handle 11 is arranged on the worm 104. By sliding the spline sleeve 102 on the spline shaft 101, the position of the handle 11 is fixed, preventing the handle 11 from moving synchronously with the needle plate 4.

[0023] The reciprocating motion mechanism 2 includes an eccentric wheel 21. A driving motor one 3 is arranged on the main body 1 of the needling machine. A rotating rod 31 is arranged at the output end of the driving motor one 3. The eccentric wheel 21 is fixedly arranged on the rotating rod 31. A swing wheel 22 is sleeved on the eccentric wheel 21. A limiting seat 24 is arranged on the main body 1 of the needling machine. A moving rod 23 is slidably arranged on the limiting seat 24. The moving rod 23 is hinged to the swing wheel 22. The lower end of the moving rod 23 is fixedly connected to a connecting plate 5. By driving the rotating rod 31 and the eccentric wheel 21 to rotate by the driving motor one 3, and cooperating with the swing wheel 22, the moving rod 23 and the connecting plate 5, the basic reciprocating motion of the needle plate 4 is realized.

[0024] A preparation process of carboxymethyl non-woven fabric has the following technological process: S1: Select natural cellulose fiber or regenerated cellulose fiber as the base material, and crush and swell it; S2: Immerse the fiber in a sodium hydroxide solution and stir to generate alkali cellulose, and then add chloroacetic acid as an etherifying agent and stir; S3: Neutralize the reaction solution to neutral with dilute hydrochloric acid to terminate the reaction, and carry out centrifugation or pressing dehydration to obtain wet carboxymethylated fiber, and then dry it; S4: Form a fluffy network structure by air-laying carboxymethylated fiber; S5: Repeatedly puncture the fiber web through the main body 1 of the needling machine to entangle the fibers, and adjust the distance of the cross bar 9 on the adjusting seat 7 according to the transportation speed of the fiber web, so as to increase the moving distance of the needle plate 4; S6: Heat and bond through a hot press roller, then perform calendering, slitting, winding, or apply functional coatings such as antibacterial and hydrophobic coatings.

[0025] It should be noted that when the carboxymethyl non-woven fabric preparation device is working, the drive motor 1 on the main body 1 of the needling machine drives the rotating rod 31 to rotate, thereby causing the eccentric wheel 21 to rotate. The pendulum wheel 22 sleeved on the eccentric wheel 21 moves accordingly. The moving rod 23 on the limiting seat 24 is hinged to the pendulum wheel 22, and the lower end of the moving rod 23 is fixedly connected to the connecting plate 5. In this way, the reciprocating motion mechanism 2 drives the connecting plate 5 to move. While the needle plate 4 reciprocates through the connecting plate 5, the drive motor 2 drives the sleeve rod 71 to rotate through the synchronous belt 121, so that the adjusting seat 7 rotates on the mounting seat 51. Since the adjusting seats 7 on both sides of the main body 1 of the needling machine are connected by the cross bar 9, the adjusting seats 7 on both sides of the main body 1 of the needling machine rotate synchronously. When the cross bar 9 rotates around the sleeve rod 71 with the adjusting seat 7, the cross bar 9 moves up and down in the moving groove 911, and at the same time drives the needle plate 4 to reciprocate back and forth on the guide rail 52 of the connecting plate 5 through the moving groove 911 on the vertical plate 91, and cooperates with the up and down reciprocating motion of the needle plate 4 to make the needle plate 4 move along an elliptical trajectory, thereby increasing the residence time of the needle plate 4 on the non-woven fabric.

[0026] During this process, the half shaft A64 is stationary when the worm 104 stops rotating because the worm gear 1041 on the spline shaft 101 is connected to the worm 104. Since the planet carrier 61 rotates together with the sleeve rod 71, and the extension plate 621 on the planet carrier 61 drives the planetary bevel gear 62 to revolve with the planet carrier 61. In addition to revolving with the planet carrier 61, the planetary bevel gear 62 also rotates around its own axis through the bevel gear 63 on the half shaft A64, thereby driving the bevel gear 63 on the half shaft B83 to rotate. In this way, after the planetary bevel gear 62 revolves one week on the planet carrier 61, since the planetary bevel gear 62 and the bevel gear 63 on the half shaft are of the same type, the planetary bevel gear 62 also rotates one week, so the half shaft B83 rotates one week, and thus the bevel gear 84 on the half shaft B83 rotates one week. Since the planet carrier 61 is arranged on the sleeve rod 71, the adjusting seat 7 rotates one week synchronously and in the same direction as the half shaft B83. Therefore, at this time, there is no relative rotation between the bevel gear 84 on the half shaft B83 and the lead screw 81. Therefore, the half shaft B83 and the lead screw 81 are relatively stationary at this time, and at this time, the cross bar 9 does not move up and down on the lead screw 81.

[0027] When it is necessary to adjust the reciprocating movement distance of the needle plate 4, rotate the worm 104 on the main body 1 of the needle punching machine. The worm 104 meshes with the worm gear 1041 on the spline shaft 101 to make the spline shaft 101 rotate. Since the bevel gear three 103 on the half shaft A64 meshes with the bevel gear three 103 on the spline sleeve 102, the spline sleeve 102 on the spline shaft 101 drives the half shaft A64 to slide in the sliding groove of the main body 1 of the needle punching machine through the connecting seat 1021 and can also rotate at the same time. When the half shaft A64 rotates, the half shaft A64 drives the half shaft B83 to rotate through the planetary bevel gear 62, and the half shaft B83 meshes with the bevel gear 84 on the lead screw 81. The lead screw 81 rotates to drive the L-shaped slider 82 to slide on the lead screw 81 and the slide bar 85, thereby changing the position of the cross bar 9 on the adjusting seat 7, that is, changing the reciprocating movement distance of the needle plate 4 on the connecting plate 5. In this way, when the non-woven fabric transportation speed on the main body 1 of the needle punching machine changes or the reciprocating movement speed of the needle plate 4 changes, the reciprocating movement distance of the needle plate 4 can be changed without stopping the machine, so that the time for the needle plate 4 to stay on the surface of the non-woven fabric matches the moving speed of the non-woven fabric, avoiding the needles on the needle plate 4 from stretching the non-woven fabric and causing floating filaments on the surface of the non-woven fabric.

[0028] The above embodiments only represent several implementation manners of the present invention. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the invention patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations and improvements can still be made, and these all belong to the protection scope of the present invention.

Claims

1. A device for preparing carboxymethyl nonwoven fabric, comprising a needle loom body (1) and a reciprocating mechanism (2) arranged on the needle loom body (1), the reciprocating mechanism (2) being connected to a connecting plate (5), a needle plate (4) being slidably arranged on the connecting plate (5), characterized in that: The connecting plate (5) is provided with a second driving motor (12); Also included are: An adjustment seat (7), the adjustment seat (7) being rotatably disposed on the connecting plate (5), and the adjustment seat (7) being driven to rotate by a second driving motor (12); A cross bar (9), wherein the cross bar (9) is slidably arranged on the adjustment seat (7), and a vertical plate (91) is arranged on the needle plate (4), and the cross bar (9) rotates with the adjustment seat (7), so that the vertical plate (91) drives the needle plate (4) to reciprocate on the connecting plate (5); A moving mechanism (8), wherein the moving mechanism (8) is arranged on the adjustment seat (7), and the cross bar (9) is caused to slide on the adjustment seat (7) through the moving mechanism (8), thereby changing the reciprocating distance of the needle plate (4) on the connecting plate (5); The reciprocating motion mechanism (2) comprises an eccentric wheel (21), a driving motor (3) is arranged on the acupuncture machine body (1), a rotating rod (31) is arranged at the output end of the driving motor (3), the eccentric wheel (21) is fixedly arranged on the rotating rod (31), a balance wheel (22) is rotatably sleeved on the eccentric wheel (21), a limiting seat (24) is arranged on the acupuncture machine body (1), a moving rod (23) is slidably arranged on the limiting seat (24), the moving rod (23) is hinged to the balance wheel (22), and the lower end of the moving rod (23) is fixedly connected to the connecting plate (5).

2. A preparation device for a carboxymethyl nonwoven fabric according to claim 1, characterized in that: Mounting seats (51) are provided at both ends of the connecting plate (5), an L-shaped plate (511) is provided on one side of the mounting seat (51), a guide rail (52) is provided on the lower surface of the mounting seat (51), the needle plate (4) is slidably arranged on the mounting seat (51) via the guide rail (52), a sleeve rod (71) is rotatably arranged on the mounting seat (51), the adjustment seat (7) is rotatably arranged on the mounting seat (51) via the sleeve rod (71), a synchronous wheel is provided at the output end of the second drive motor (12) and the sleeve rod (71), a synchronous belt (121) is connected between the synchronous wheels, and a differential mechanism (6) is connected to the sleeve rod (71).

3. A preparation device for a carboxymethyl nonwoven fabric according to claim 2, characterized in that: The moving mechanism (8) comprises a screw rod (81), the screw rod (81) is rotatably arranged on one of the adjustment seats (7), a slide rod (85) is fixedly arranged on the other adjustment seat (7), an L-shaped slider (82) is arranged on the screw rod (81) and the slide rod (85), the L-shaped slider (82) is threadedly connected to the screw rod (81), the L-shaped slider (82) is slidably connected to the slide rod (85), one end of the L-shaped slider (82) is slidably arranged on the adjustment seat (7), the cross bar (9) is arranged between the two L-shaped sliders (82), a half shaft B (83) is rotatably arranged in one of the sleeve rods (71), a bevel gear (84) is fixedly arranged on the half shaft B (83) and the screw rod (81), and the two bevel gears (84) are meshed with each other.

4. A preparation device for a carboxymethyl nonwoven fabric according to claim 3, characterized in that: The differential mechanism (6) comprises a planet carrier (61), the planet carrier (61) being fixedly arranged on a sleeve rod (71), an extension plate (621) being arranged on the planet carrier (61), a planet bevel gear (62) being rotatably arranged on the extension plate (621), the half shaft B (83) passing through the planet carrier (61), a half shaft A (64) being rotatably arranged on the L-shaped plate (511), a half shaft bevel gear (63) being fixedly arranged on both the half shaft A (64) and the half shaft B (83), and the two half shaft bevel gears (63) being meshingly connected with the planet bevel gear (62).

5. A preparation device for a carboxymethyl nonwoven fabric according to claim 4, characterized in that: A pressing plate (41) is provided on the acupuncture machine body (1), the pressing plate (41) is located below the needle plate (4), a plurality of strip holes (411) are provided on the pressing plate (41), and the needles on the needle plate (4) pass through the strip holes (411), sliding grooves are provided on both sides of the acupuncture machine body (1), the semi-axle A (64) is slidably arranged in the sliding grooves, and a spline connection mechanism (10) is connected to the semi-axle A (64).

6. A preparation device for a carboxymethyl nonwoven fabric according to claim 5, characterized in that: The spline connection mechanism (10) comprises a spline shaft (101), the spline shaft (101) is rotatably arranged on one side of the needle machine body (1), the half shaft A (64) is sleeved with a connection seat (1021), the connection seat (1021) is provided with a spline sleeve (102), the spline sleeve (102) is slidably arranged on the spline shaft (101), the half shaft A (64) and the spline sleeve (102) are both fixedly provided with a bevel gear three (103), the two bevel gears three (103) are meshed with each other, a worm (104) is rotatably arranged on the needle machine body (1), a worm wheel (1041) is fixedly provided on the spline shaft (101), the worm wheel (1041) and the worm (104) are meshed with each other, and a handle (11) is provided on the worm (104).

7. A preparation device for a carboxymethyl nonwoven fabric according to claim 1, characterized in that: The vertical plate (91) is provided with a movable groove (911), the cross bar (9) passes through the vertical plate (91) through the movable groove (911), and the cross bar (9) can slide in the movable groove (911).

8. A process for preparing a carboxymethyl nonwoven fabric based on the device for preparing a carboxymethyl nonwoven fabric according to any one of claims 1 to 7, wherein the process flow is as follows: S1: Select natural cellulose fiber or regenerated cellulose fiber as the base material, crush and swell it; S2: immersing the fiber in a sodium hydroxide solution and stirring it to generate alkali cellulose, and then adding chloroacetic acid as an etherifying agent and stirring it; S3: neutralizing the reaction solution with dilute hydrochloric acid to neutrality, terminating the reaction, and performing centrifugation or pressing to dehydrate to obtain wet carboxymethylated fiber, which is then dried; S4: forming a fluffy mesh structure by air-spreading carboxymethylated fibers; S5: repeatedly puncturing the fiber web through the needle loom body (1) to entangle the fibers, and adjusting the distance of the cross bar (9) on the adjustment seat (7) according to the transportation speed of the fiber web, thereby increasing the moving distance of the needle plate (4); S6: Heat bonding by hot pressing rollers, followed by calendering, slitting, winding, or antibacterial, hydrophobic functional coating treatment.

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