Preparation Device and Process of Carboxymethyl Nonwoven Fabric

Abstract

The present invention relates to the field of non-woven fabric preparation, specifically to a preparation device and process for carboxymethyl non-woven fabric, including a main body of a needling machine and a reciprocating motion mechanism arranged on the main body of the needling machine. A connecting plate is connected to the reciprocating motion mechanism, and a needle plate is slidably arranged on the connecting plate. A second driving motor is arranged on the connecting plate; it further includes: an adjusting seat, which is rotatably arranged on the connecting plate, and the adjusting seat is driven to rotate by the second driving motor; when the preparation device for this carboxymethyl non-woven fabric needs to adjust the reciprocating movement distance of the needle plate, the worm is rotated, the spline shaft is rotated through the worm wheel, and while the spline sleeve drives the half shaft A to slide in the sliding groove of the main body of the needling machine, it rotates at the same time. The half shaft A drives the half shaft B to rotate through the planetary bevel gear, and then the lead screw rotates, driving the L-shaped slider to slide on the lead screw and the slide bar, changing the position of the cross bar on the adjusting seat, so as to change the reciprocating movement distance of the needle plate on the connecting plate.

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:

[0006] 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;

[0007] Also included are:

[0008] 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;

[0009] A crossbar is slidably arranged on an adjusting seat. A vertical plate is arranged on the needle plate. By the rotation of the crossbar following the adjusting seat, the vertical plate drives the needle plate to reciprocate on the connecting plate.

[0010] A moving mechanism is arranged on the adjusting seat. By the moving mechanism, the crossbar slides on the adjusting seat, thereby changing the distance of the reciprocating movement of the needle plate on the connecting plate.

[0011] 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.

[0012] As a further optimized solution 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 the synchronous wheels. A differential mechanism is connected to the sleeve rod.

[0013] As a further optimized solution 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. The L-shaped slider is slidably connected to the slide bar. One end of the L-shaped slider is slidably arranged on the adjusting seat. The crossbar 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.

[0014] As a further optimized solution of the present invention, the differential mechanism includes a planetary carrier. The planetary carrier is fixedly arranged on the sleeve rod. An extension plate is arranged on the planetary carrier. A planetary bevel gear is rotatably arranged on the extension plate. The half shaft B penetrates through the planetary 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.

[0015] As a further optimized solution of the present invention, a pressing plate is provided on the main body of the needle punching machine. The pressing plate is located below the needle plate. A plurality of strip-shaped holes are provided on the pressing plate, and the punching needles on the needle plate penetrate through the strip-shaped holes. Sliding grooves are provided on both sides of the main body of the needle punching machine, and the half shaft A is slidably arranged in the sliding grooves. A spline connection mechanism is connected to the half shaft A.

[0016] As a further optimized solution of the present invention, the spline connection mechanism includes a spline shaft. The spline shaft is rotatably arranged on one side of the main body of the needle punching machine. A connection seat is sleeved on the half shaft A. A spline sleeve is provided on the connection seat. The spline sleeve is slidably arranged on the spline shaft. Cone gears III are fixedly arranged on both the half shaft A and the spline sleeve, and the two cone gears III are meshed with each other. A worm is rotatably arranged on the main body of the needle punching machine. A worm gear is fixedly arranged on the spline shaft. The worm gear is meshed with the worm. A handle is provided on the worm.

[0017] As a further optimized solution of the present invention, a moving groove is provided on the vertical plate. The cross bar penetrates through the vertical plate through the moving groove, and the cross bar can slide in the moving groove.

[0018] A preparation process for carboxymethyl non-woven fabric of a preparation device for carboxymethyl non-woven fabric is as follows:

[0019] S1: Select natural cellulose fiber or regenerated cellulose fiber as the base material, and crush and swell it.

[0020] 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.

[0021] S3: Neutralize the reaction solution to neutral with dilute hydrochloric acid to terminate the reaction, perform centrifugation or pressing for dehydration to obtain wet carboxymethylated fiber, and then dry it.

[0022] S4: Form a fluffy network structure by air-laying the carboxymethylated fiber.

[0023] S5: Repeatedly puncture the fiber web through the main body of the needle punching machine 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.

[0024] S6: Heat and bond through a hot pressing roller, and then perform calendering, slitting, winding, or perform antibacterial and hydrophobic functional coating treatments.

[0025] The beneficial effects of the present invention are as follows:

[0026] Different from the prior art, during actual use, when it is necessary to adjust the reciprocating movement distance of the needle plate, rotate the worm, and through the worm wheel, make the spline shaft rotate. The spline sleeve drives the half shaft A to slide and rotate in the sliding groove of the main body of the needle punching machine. The half shaft A drives the half shaft B to rotate through the planetary bevel gear, and then makes the lead screw rotate, driving the L-shaped slider to slide on the lead screw and the slide bar, changing the position of the cross bar on the adjusting seat, thereby changing the reciprocating movement 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 movement distance of the needle plate can be changed without stopping the machine, so that the time the needle plate stays 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, ensuring the quality stability of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0028] Figure 2 is a schematic diagram of the structure of the reciprocating motion mechanism of the present invention;

[0029] Figure 3 is a schematic diagram of the connection structure of the connecting plate of the present invention;

[0030] Figure 4 is the present invention Figure 3 The enlarged schematic diagram at position A in;

[0031] Figure 5 is the present invention Figure 3 The enlarged schematic diagram at position B in;

[0032] Figure 6 is a schematic diagram of the structure of the moving mechanism of the present invention;

[0033] Figure 7 is a schematic diagram of the structure of the spline connection mechanism of the present invention;

[0034] Figure 8 is a schematic diagram of the structure of the pressing plate of the present invention;

[0035] Figure 9 is the present invention Figure 8 The enlarged schematic diagram at position C in.

[0036] In the figure: 1. Acupuncture machine main body; 2. Reciprocating motion mechanism; 21. Eccentric wheel; 22. Pendulum wheel; 23. Moving rod; 24. Restricting seat; 3. First driving motor; 31. Rotating rod; 4. Needle plate; 41. Pressing plate; 411. Strip-shaped hole; 5. Connecting plate; 51. Mounting seat; 511. L-shaped plate; 52. Guide rail; 6. Differential mechanism; 61. Planet carrier; 62. Planet bevel gear; 621. Extension plate; 63. Half-axis bevel gear; 64. Half-axis A; 7. Adjusting seat; 71. Sleeve rod; 8. Moving mechanism; 81. Lead screw; 82. L-shaped slider; 83. Half-axis B; 84. Bevel gear; 85. Slide bar; 9. Cross bar; 91. Vertical plate; 911. Moving groove; 10. Spline connection mechanism; 101. Spline shaft; 102. Spline sleeve; 1021. Connection seat; 103. Third bevel gear; 104. Worm; 1041. Worm gear; 11. Handle; 12. Second driving motor; 121. Synchronous belt. Detailed implementation manners

[0037] 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 a limitation on 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.

[0038] Example 1 As Figure 1 - Figure 9 shown, a preparation device for carboxymethyl non-woven fabric includes an acupuncture machine main body 1 and a reciprocating motion mechanism 2 arranged on the acupuncture machine main body 1. A connecting plate 5 is connected to the reciprocating motion mechanism 2, and a needle plate 4 is slidably arranged on the connecting plate 5. A pressing plate 41 is arranged on the acupuncture machine main body 1, and the pressing plate 41 is located below the needle plate 4. A plurality of strip-shaped holes 411 are opened on the pressing plate 41, and the strip-shaped holes 411 allow the needles on the elliptical moving needle plate 4 to have a certain moving space, and the needles on the needle plate 4 penetrate through the strip-shaped holes 411;

[0039] 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 of support and positioning, ensuring that the non-woven fabric remains flat during the acupuncture process, and the needles can vertically and accurately penetrate the fiber web, improving the uniformity and stability of the acupuncture effect, and helping to improve the overall quality of the non-woven fabric.

[0040] This preparation device further includes a second driving motor 12, and the second driving motor 12 is arranged on the connecting plate 5:

[0041] An adjustment seat 7 is rotatably arranged on the connecting plate 5. The adjustment seat 7 is driven to rotate by a 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 adjustment 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 on the sleeve rod 71. 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, so as to further make the adjustment 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 adjustment seat 7 can also rotate one week, accurately controlling the rotation of the adjustment seat 7.

[0042] A cross bar 9 is arranged on the adjustment seat 7. A vertical plate 91 is arranged on the needle plate 4. By the cross bar 9 following the rotation of the adjustment seat 7, the vertical plate 91 drives the needle plate 4 to make a reciprocating motion on the connecting plate 5. A moving groove 911 is formed on the vertical plate 91. The cross bar 9 passes through the vertical plate 91 through the moving groove 911. The cross bar 9 can slide in the moving groove 911. When the adjustment 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 make a reciprocating motion 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.

[0043] A moving mechanism 8 is arranged on the adjustment seat 7. Through the moving mechanism 8, the cross bar 9 slides on the adjustment seat 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 adjustment seats 7. A sliding rod 85 is fixedly arranged on the other adjustment seat 7. L-shaped sliders 82 are arranged on both the lead screw 81 and the sliding rod 85. The L-shaped slider 82 is threadedly connected with the lead screw 81. The L-shaped slider 82 is slidably connected with the sliding 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 L-shaped sliders 82. A half shaft B83 is rotatably arranged in one of the sleeve rods 71. Bevel gears 84 are fixedly arranged on both the half shaft B83 and the lead screw 81. The bevel 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 sliding rod 85, changing the position of the cross bar 9 on the adjustment seat 7, and further adjusting the reciprocating movement distance of the needle plate 4.

[0044] 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 B83 penetrates through the planet carrier 61. A half shaft A64 is rotatably arranged on the L-shaped plate 511. Half shaft bevel gears 63 are fixedly arranged on both the half shaft A64 and the half shaft B83. The planetary bevel gear 62 and the half shaft bevel gear 63 are of the same model. The half shaft bevel gear 63 is meshed and connected with the planetary bevel gear 62. When the half shaft A64 is blocked by resistance and cannot rotate, in addition to rotating with the planet carrier 61 in revolution, the planetary bevel gear 62 will also rotate around its own axis through the half shaft bevel gear 63 on the half shaft A64, thereby driving the half shaft bevel gear 63 on the half shaft B83 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 rotates one revolution, so the half shaft B83 rotates one revolution, and thus the bevel gear 84 on the half shaft B83 rotates one revolution. Since the planet carrier 61 is arranged on the sleeve rod 71, the adjusting seat 7 rotates one revolution 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 screw rod 81, and thus the cross bar 9 will not move up and down on the screw rod 81.

[0045] Sliding grooves are formed on both sides of the main body 1 of the needle punching machine. 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 needle punching 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. Cone gears three 103 are fixedly arranged on both the half shaft A64 and the spline sleeve 102. The cone gears three 103 are meshed with each other. A worm 104 is rotatably arranged on the main body 1 of the needle punching machine. A worm gear 1041 is fixedly arranged on the spline shaft 101. The worm gear 1041 is meshed with the worm 104. When the worm gear 1041 attempts to drive the worm 104, since the helix angle is 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 realizing 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.

[0046] The reciprocating motion mechanism 2 includes an eccentric wheel 21. A driving motor 1 is provided on the main body 1 of the needle punching machine. A rotating rod 31 is provided at the output end of the driving motor 1. 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 provided on the main body 1 of the needle punching 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 through the driving motor 1, 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.

[0047] A preparation process of carboxymethyl non-woven fabric has the following technological process:

[0048] S1: Select natural cellulose fiber or regenerated cellulose fiber as the base material, and pulverize and swell it.

[0049] 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.

[0050] S3: Neutralize the reaction solution to neutrality with dilute hydrochloric acid to terminate the reaction, and perform centrifugation or pressing dehydration to obtain wet carboxymethylated fiber, and then dry it.

[0051] S4: Form a fluffy network structure by air-laying the carboxymethylated fiber.

[0052] S5: Repeatedly puncture the fiber web through the main body 1 of the needle punching 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.

[0053] S6: Heat and bond through a hot pressing roller, and then perform calendering, slitting, winding, or perform functional coating treatments such as antibacterial and hydrophobic.

[0054] It should be noted that when the carboxymethyl non-woven fabric preparation device is working, the driving motor 1 on the main body 1 of the needling machine drives the rotating rod 31 to rotate, thereby driving the eccentric wheel 21 to rotate. The swing wheel 22 sleeved on the eccentric wheel 21 moves accordingly. The moving rod 23 on the limiting seat 24 is hinged to the swing 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 driving motor 2 12 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 as the center, 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 track, thereby increasing the residence time of the needle plate 4 on the non-woven fabric.

[0055] During this process, the half shaft A 64 is stationary because the worm gear 1041 on the spline shaft 101 is connected to the worm 104 and the worm 104 stops rotating. Since the planet carrier 61 rotates together with the sleeve rod 71, and the extension plate 621 on the planet carrier 61 drives the planet bevel gear 62 to revolve around the planet carrier 61. In addition to revolving around the planet carrier 61, the planet bevel gear 62 also rotates 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 planet bevel gear 62 revolves around the planet carrier 61 for one week, since the planet bevel gear 62 and the half shaft bevel gear 63 are of the same model, the planet bevel gear 62 also rotates one week, so the half shaft B 83 rotates one week, and thus the bevel gear 84 on the half shaft B 83 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 B 83. Therefore, at this time, there is no relative rotation between the half shaft B 83 and the bevel gear 84 on the lead screw 81. Therefore, the half shaft B 83 and the lead screw 81 are relatively stationary at this time, and the cross bar 9 does not move up and down on the lead screw 81 at this time.

[0056] 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 needling machine. The worm 104 meshes with the worm gear 1041 on the spline shaft 101, causing the spline shaft 101 to 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 needling 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, driving 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 needling 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.

[0057] 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 preparation device for carboxymethyl non-woven fabric, comprising a main body of a needling machine (1) and a reciprocating motion mechanism (2) arranged on the main body of the needling machine (1). A connecting plate (5) is connected to the reciprocating motion mechanism (2), and a needle plate (4) is slidably arranged on the connecting plate (5), characterized in that: A driving motor two (12) is arranged on the connecting plate (5); It further includes: An adjusting seat (7) which is rotatably arranged on the connecting plate (5), and the adjusting seat (7) is driven to rotate by the driving motor two (12); A cross bar (9) which is slidably arranged on the adjusting seat (7), and a vertical plate (91) is arranged on the needle plate (4). As the cross bar (9) follows the rotation of the adjusting seat (7), the vertical plate (91) drives the needle plate (4) to perform a reciprocating motion on the connecting plate (5); A moving mechanism (8) which is arranged on the adjusting seat (7). By means of the moving mechanism (8), the cross bar (9) slides on the adjusting seat (7), thereby changing the distance of the reciprocating movement of the needle plate (4) on the connecting plate (5); The reciprocating motion mechanism (2) includes an eccentric wheel (21). A driving motor one (3) is arranged on the main body (1) of the needle punching 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 rotatably sleeved on the eccentric wheel (21). A limiting seat (24) is arranged on the main body (1) of the needle punching machine. A moving rod (23) is slidably arranged on the limiting seat (24). The moving rod (23) is hinged to the swing wheel (22), and the lower end of the moving rod (23) is fixedly connected to the connecting plate (5); Mounting seats (51) are arranged at both ends of the connecting plate (5). An L-shaped plate (511) is arranged on one side of the mounting seat (51). A guide rail (52) is arranged on the lower surface of the mounting seat (51). The needle plate (4) is slidably arranged on the mounting seat (51) through the guide rail (52). A sleeve rod (71) is rotatably arranged on the mounting seat (51). The adjusting seat (7) is rotatably arranged on the mounting seat (51) through the sleeve rod (71). Synchronous wheels are arranged at the output end of the driving motor two (12) and on the sleeve rod (71), and a synchronous belt (121) is connected between the synchronous wheels. A differential mechanism (6) is connected to the sleeve rod (71); The moving mechanism (8) includes a lead screw (81) which is rotatably arranged on one of the adjusting seats (7). A sliding rod (85) is fixedly arranged on the other adjusting seat (7). L-shaped sliders (82) are arranged on both the lead screw (81) and the sliding rod (85). The L-shaped slider (82) is threadedly connected to the lead screw (81) and slidably connected to the sliding rod (85). One end of the L-shaped slider (82) is slidably arranged on the adjusting 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). Bevel gears (84) are fixedly arranged on both the half shaft B (83) and the lead screw (81), and the two bevel gears (84) are meshed with each other; 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), and the two half shaft bevel gears (63) are meshed with the planetary bevel gear (62); Sliding grooves are formed on both sides of the main body (1) of the needling machine, the half shaft A (64) is slidably arranged in the sliding grooves, and a spline connection mechanism (10) is connected to the half shaft A (64).

2. The preparation device of a carboxymethyl non-woven fabric according to claim 1, characterized in that: 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 formed in the pressing plate (41), and the needles on the needle plate (4) penetrate through the strip holes (411).

3. The preparation device of a carboxymethyl non-woven fabric according to claim 1, characterized in that: 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 connecting seat (1021) is sleeved on the half shaft A (64), a spline sleeve (102) is arranged on the connecting seat (1021), the spline sleeve (102) is slidably arranged on the spline shaft (101), spline bevel gears (103) are fixedly arranged on both the half shaft A (64) and the spline sleeve (102), the two spline bevel gears (103) are meshed 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 meshed with the worm (104), and a handle (11) is arranged on the worm (104).

4. The preparation device of a carboxymethyl non-woven fabric according to claim 1, characterized in that: A moving groove (911) is formed in the vertical plate (91), the cross bar (9) penetrates through the vertical plate (91) through the moving groove (911), and the cross bar (9) can slide in the moving groove (911).

5. A preparation process of carboxymethyl non-woven fabric for a preparation device of carboxymethyl non-woven fabric according to any one of claims 1-4, and the process flow 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 perform drying; S4: Form a fluffy network structure by air-laying the 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 pressing roller, and then perform calendering, slitting, winding, or perform antibacterial and hydrophobic functional coating treatments.

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