Production device of elastic non-woven fabric

Abstract

The invention discloses an elastic non-woven fabric production device, and belongs to the field of non-woven fabric processing equipment. An elastic non-woven fabric production device comprises a frame body, a driving assembly and a roller assembly. The roller assembly is erected on the frame body; the output end of the driving assembly is connected with the input end of the roller assembly so as to drive the roller assembly to operate. The roller wheel assembly comprises a first roller wheel and a second roller wheel; the first roller and the second roller are arranged up and down and matched to form a front roller assembly, and the first roller is arranged above the second roller; a plurality of annular protrusions are arranged on the periphery of the second roller. The annular protrusions are arranged at intervals in the axial direction of the second roller, and an annular groove is formed between every two adjacent annular protrusions. By means of the arrangement, transverse elastic activation of the non-woven fabric can be achieved.

Description

Technical Field

[0001] The invention belongs to the field of nonwoven fabric processing equipment, and more specifically, relates to a production device for elastic nonwoven fabric. Background Art

[0002] As a soft, breathable and lightweight nonwoven material, nonwoven fabrics are widely used in medical protection, personal care, construction engineering, clothing and textiles. As the market demand for comfort and functionality increases, the requirements for high elasticity, body fit and durability of nonwoven fabrics are becoming increasingly stringent, especially in products such as baby care and adult hygiene products that have high requirements for softness and fit, the application of elastic nonwoven fabrics has gradually become a development trend.

[0003] Existing non-woven fabric production equipment mainly adopts longitudinal stretching technology, which stretches the non-woven fabric material in the longitudinal direction to make its fiber structure produce longitudinal elasticity; this process increases the elasticity of the non-woven fabric to a certain extent, but has obvious limitations, that is, it can only provide elasticity in the length direction (longitudinal direction), while the elasticity in the transverse direction (width direction) is weak or non-existent, which makes it difficult to meet some application requirements that require transverse bonding. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a production device for elastic nonwoven fabric, which can realize transverse elastic activation of the nonwoven fabric.

[0005] The elastic nonwoven fabric production device of the present invention comprises a frame, a driving assembly and a roller assembly; the roller assembly is mounted on the frame; the output end of the driving assembly is installed and connected with the input end of the roller assembly to drive the roller assembly to operate; The roller assembly comprises a first roller and a second roller; the first roller and the second roller are arranged up and down and matched to form a front roller assembly, and the first roller is arranged above the second roller; a plurality of annular protrusions are arranged on the outer periphery of the second roller; the annular protrusions are arranged at intervals along the axial direction of the second roller, and annular grooves are formed between adjacent annular protrusions; The first roller comprises a first outer shell, a first inner shell and a first inner tube; connecting pipes are fixedly arranged at both ends of the first inner tube; a plurality of branch pipes are fixedly arranged on the outer periphery of the connecting pipe; the branch pipes are annular and arranged at intervals on the outer periphery of the connecting pipe; one end of the branch pipe passes through the connecting pipe and is connected with the inside of the connecting pipe; the first inner shell is sleeved on the outer periphery of the first inner tube, the first outer shell is sleeved on the outer periphery of the first inner shell, and a first inner cavity is formed between the first outer shell and the first inner shell; a plurality of first through holes are opened on the outer periphery of both ends of the first inner shell; the other end of the branch pipe passes through the corresponding first through hole of the first inner shell and is connected with the first inner cavity, and the inside of the connecting pipe is connected with the first inner cavity through the branch pipe; The number of the first through holes is the same as the number of the branch pipes.

[0006] As a further improvement of the present invention, the roller assembly also includes a third roller and a fourth roller; the drive assembly includes a first drive assembly and a second drive assembly; the third roller and the fourth roller are arranged up and down and matched to form a rear roller assembly, and the third roller is arranged above the fourth roller; the output end of the first drive assembly is installed and connected to the front roller assembly to drive the front roller assembly to operate; the output end of the second drive assembly is installed and connected to the rear roller assembly to drive the rear roller assembly to operate.

[0007] As a further improvement of the present invention, the frame includes two installation boxes and a plurality of connecting rods; the installation boxes are respectively a first installation box and a second installation box; the first installation box and the second installation box are installed and connected by connecting rods; the first drive assembly is installed in the first installation box; the second drive assembly is installed in the second installation box; The second roller is respectively installed with a third driving assembly at both ends; the third driving assembly drives the second roller to reciprocate in the vertical direction; the third driving assembly is respectively fixedly arranged on the outer side walls opposite to the first installation box and the second installation box.

[0008] As a further improvement of the present invention, one end of the connecting pipe fitting away from the first inner pipe passes through the side wall of the corresponding installation box and is rotatably connected to the first fixed ring fixedly arranged on the inner wall of the installation box; a first ring block is fixedly sleeved on the outer periphery of the end of the connecting pipe fitting away from the installation box; a second ring block is fixedly sleeved on the connecting pipe fitting between the installation box and the first ring block; the second ring block is concavely arranged at one end toward the first ring block, forming a first step; the branch pipe is arranged between the second ring block and the first ring block; the first inner shell is sleeved on the outer periphery of the first ring block, and the second ring blocks are respectively arranged at two ends of the first inner shell, and the two ends of the first inner shell are abutted against the first step; the first outer shell is fixedly sleeved on the outer periphery of the second ring block, and the two end covers of the first outer shell are provided with first sealing covers, and the first sealing covers are sleeved on the outer periphery of the connecting pipe fitting.

[0009] As a further improvement of the present invention, the connecting pipe fittings at both ends of the first inner tube, one of which is sealed at one end away from the first inner tube; the other connecting pipe fitting at one end away from the first inner tube extends into the installation box, and is installed with a first water inlet and outlet assembly; the first water inlet and outlet assembly is used to add water to the inside of the first roller, or to drain the water from the inside of the first roller.

[0010] As a further improvement of the present invention, the first roller further comprises a plurality of first blocking bars, a plurality of second blocking bars and a plurality of third blocking bars; the first blocking bars, the second blocking bars and the plurality of third blocking bars are arranged at intervals and staggered on the outer periphery of the first inner shell; The length of the first barrier strip and the second barrier strip is less than the length of the third barrier strip; the length of the first barrier strip and the second barrier strip is less than the length of the first inner shell; the length of the first inner tube is less than the length of the first inner shell, and the length of the first inner shell is less than the length of the first outer shell; One end of the first blocking strip is fixedly connected to one of the second ring blocks, and one end of the second blocking strip is fixedly connected to another second ring block; both ends of the third blocking strip are respectively fixedly connected to the second ring blocks at both ends of the first inner shell; A first blocking bar and a second blocking bar are respectively arranged between the two third blocking bars; a water trough is formed between the first blocking bar, the second blocking bar and the third blocking bar; first through holes are respectively arranged at both ends of the water trough to connect and conduct the water trough and the branch pipe; The water tank is a circular tank; or, the water tank is arranged in an S shape.

[0011] As a further improvement of the present invention, the first roller is a heating roller, and hot water is passed into the first roller; the third roller and the fourth roller are cold water rollers, and cold water is passed into the third roller and the fourth roller; The first roller, the third roller and the fourth roller have the same structure; the two ends of the third roller respectively penetrate the side walls of the corresponding installation box, and are rotatably connected with the second fixing ring fixedly arranged on the inner wall of the installation box; the third roller is located at one end of the second installation box and is installed with a second water inlet and outlet assembly, and the second water inlet and outlet assembly is used to add water to the inside of the third roller, or to drain the water inside the third roller; the two ends of the fourth roller respectively penetrate the side walls of the corresponding installation box, and are rotatably connected with the third fixing ring fixedly arranged on the inner wall of the installation box; the fourth roller is located at one end of the second installation box and is installed with a third water inlet and outlet assembly, and the third water inlet and outlet assembly is used to add water to the inside of the fourth roller, or to drain the water inside the fourth roller; The first water inlet and outlet assembly, the second water inlet and outlet assembly and the third water inlet and outlet assembly have the same structure.

[0012] As a further improvement of the present invention, the first driving assembly includes a first motor, a first base, a first driven wheel, a first water inlet and outlet assembly and a first belt; the first base is fixedly arranged on the inner wall of the first installation box; the first motor is fixedly arranged on the top of the first base; the output end of the first motor is fixedly sleeved with a first driving wheel; the first driven wheel is fixedly sleeved on the outer periphery of the first water inlet and outlet assembly, and the first driven wheel and the first driving wheel are connected by a first belt transmission.

[0013] As a further improvement of the present invention, the second driving assembly includes a second motor, a second base, a second driven wheel, a second belt, a third driven wheel and a fourth driven wheel; the second base is fixedly arranged on the inner wall of the second installation box, and the second motor is fixedly arranged on the top of the second base; the output end of the second motor is fixedly sleeved with a second driving wheel; the second driven wheel is fixedly sleeved on the outer periphery of the third water inlet and outlet assembly, and the fourth driven wheel is fixedly sleeved on the outer periphery of the second water inlet and outlet assembly; the third driven wheel is rotatably arranged on the inner side wall of the second installation box; the second driving wheel, the second driven wheel, the third driven wheel and the fourth driven wheel are connected by a second belt transmission, and the second motor drives the second driving wheel to rotate, thereby driving the third roller and the fourth roller to rotate back and forth; The third driven wheel is arranged below the fourth driven wheel.

[0014] As a further improvement of the present invention, the third driving assembly includes a fixed plate, a third motor, a slider and a mounting plate; the fixed plate is fixedly arranged on the outer side wall of the corresponding mounting box, a slide rail is fixedly arranged on the side of the fixed plate away from the mounting box, and the mounting plate is slidably connected to the slide rail through the slider; the output end of the third motor is installed and connected to the mounting plate to drive the mounting plate to reciprocate in the vertical direction; Both ends of the second roller respectively penetrate the corresponding mounting plates and are rotatably connected to the mounting plates; the third motor drives the second roller to reciprocate in the vertical direction through the mounting plates.

[0015] Compared with the prior art, the present invention has the following beneficial effects: Achieve transverse activation of non-woven fabrics: Apply transverse tensile force to the non-woven fabrics through the annular protrusions and the annular grooves, and cooperate with the heating function of the first roller to make the non-woven fabrics obtain uniform elasticity in the transverse direction, expanding the limitations of traditional non-woven fabric production equipment in the elastic direction; Efficient heating and cooling system: The first roller is heated by the built-in water circulation system, while the third and fourth rollers are cooled by the cold water system; the combination of heating and cooling enables the non-woven fabric to be activated and shaped in a short time, improving production efficiency while ensuring that the elastic effect of the material is more stable; Improve the application adaptability of materials: The non-woven fabric produced by the transverse activation process has higher elasticity in the width direction, so that it can better fit the human body in the fields of medical protection, personal care products, etc., increasing the comfort and tightness of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the production device structure of the present invention; Figure 2 This is one of the partial structural schematic diagrams of the production device of the present invention; Figure 3This is the second schematic diagram of the local structure of the production device of the present invention; Figure 4 The third schematic diagram of the local structure of the production device of the present invention; Figure 5 This is the fourth schematic diagram of the partial structure of the production device of the present invention; Figure 6 This is the fifth schematic diagram of the local structure of the production device of the present invention.

[0017] Description of the numbers in the figure: 1. Frame; 2. First roller; 3. Second roller; 4. Third roller; 5. Fourth roller; 6. First drive assembly; 61. First motor; 62. First base; 63. First driving wheel; 64. First driven wheel; 65. First water inlet and outlet assembly; 66. First belt; 7. Second drive assembly; 71. Second motor; 72. Second base; 73. Second driving wheel; 74. Second driven wheel; 75. Second water inlet and outlet assembly; 76. Second belt; 77. Third water inlet and outlet assembly; 78. Third driven wheel; 79. Fourth driven wheel; 8. Third drive assembly; 81. Fixed plate; 82. Third motor; 83. Slide rail; 84. Sliding block; 85. Mounting plate. DETAILED DESCRIPTION

[0018] The present invention is further described in detail below in conjunction with embodiments. The following embodiments are for explanation of the present invention but the present invention is not limited to the following embodiments.

[0019] Specific embodiment 1: Please refer to Figure 1-6 A production device for elastic nonwoven fabric comprises a frame 1, a driving assembly and a roller assembly; the roller assembly is mounted on the frame 1; the output end of the driving assembly is installed and connected with the input end of the roller assembly to drive the roller assembly to operate.

[0020] The driving assembly includes a first driving assembly 6 and a second driving assembly 7; the roller assembly includes a first roller 2, a second roller 3, a third roller 4 and a fourth roller 5; the first roller 2 and the second roller 3 are arranged up and down and matched to form a front roller assembly, and the first roller 2 is arranged above the second roller 3; the third roller 4 and the fourth roller 5 are arranged up and down and matched to form a rear roller assembly, and the third roller 4 is arranged above the fourth roller 5; the output end of the first driving assembly 6 is installed and connected to the front roller assembly to drive the front roller assembly to operate; the output end of the second driving assembly 7 is installed and connected to the rear roller assembly to drive the rear roller assembly to operate.

[0021] Optionally, the frame 1 includes two installation boxes and a plurality of connecting rods; the installation boxes are respectively a first installation box and a second installation box; the first installation box and the second installation box are installed and connected by connecting rods; the first drive assembly 6 is installed in the first installation box; the second drive assembly 7 is installed in the second installation box.

[0022] The second roller 3 is provided with a third driving assembly 8 at both ends thereof; the third driving assembly 8 drives the second roller 3 to reciprocate in the vertical direction; the third driving assembly 8 is fixedly provided on the opposite outer side walls of the first installation box and the second installation box.

[0023] Preferably, a plurality of annular protrusions are arranged on the outer periphery of the second roller 3; the annular protrusions are arranged at intervals along the axial direction of the second roller 3, and annular grooves are formed between adjacent annular protrusions.

[0024] The first roller 2 includes a first outer shell, a first inner shell and a first inner tube; connecting pipes are fixedly provided at both ends of the first inner tube; a plurality of branch pipes are fixedly provided on the outer periphery of the connecting pipe; the branch pipes are annular and are arranged at intervals on the outer periphery of the connecting pipe; one end of the branch pipe passes through the connecting pipe and is connected to the inside of the connecting pipe; the first inner shell is sleeved on the outer periphery of the first inner tube, the first outer shell is sleeved on the outer periphery of the first inner shell, and a first inner cavity is formed between the first outer shell and the first inner shell; a plurality of first through holes are opened on the outer periphery of both ends of the first inner shell; the other end of the branch pipe passes through the corresponding first through hole of the first inner shell and is connected to the first inner cavity, and the inside of the connecting pipe is connected to the first inner cavity through the branch pipe.

[0025] One end of the connecting pipe fitting away from the first inner pipe passes through the side wall of the corresponding installation box and is rotatably connected to the first fixed ring fixedly arranged on the inner wall of the installation box; a first ring block is fixedly sleeved on the outer periphery of the end of the connecting pipe fitting away from the installation box; a second ring block is fixedly sleeved on the connecting pipe fitting between the installation box and the first ring block; the second ring block is concavely arranged at one end facing the first ring block, forming a first step; the branch pipe is arranged between the second ring block and the first ring block; the first inner shell is sleeved on the outer periphery of the first ring block, and the second ring blocks are respectively arranged at two ends of the first inner shell, and the two ends of the first inner shell are abutted against the first step; the first outer shell is fixedly sleeved on the outer periphery of the second ring block, and the two end covers of the first outer shell are provided with first sealing covers, and the first sealing covers are sleeved on the outer periphery of the connecting pipe fitting.

[0026] Preferably, the connecting pipe fittings at both ends of the first inner tube, one of which is sealed at one end away from the first inner tube; the other connecting pipe fitting at one end away from the first inner tube extends into the installation box, and is installed with a first water inlet and outlet assembly 65; the first water inlet and outlet assembly 65 is used to add water to the inside of the first roller 2, or to drain the water from the inside of the first roller 2.

[0027] The first roller 2 further comprises a plurality of first blocking bars, a plurality of second blocking bars and a plurality of third blocking bars; the first blocking bars, the second blocking bars and the plurality of third blocking bars are arranged at intervals and in an alternating manner on the outer periphery of the first inner shell.

[0028] Preferably, the length of the first barrier bar and the second barrier is less than the length of the third barrier bar; the length of the first barrier bar and the second barrier is less than the length of the first inner shell; the length of the first inner tube is less than the length of the first inner shell, and the length of the first inner shell is less than the length of the first outer shell.

[0029] One end of the first blocking strip is fixedly connected to one of the second ring blocks, and one end of the second blocking strip is fixedly connected to another second ring block; both ends of the third blocking strip are respectively fixedly connected to the second ring blocks at both ends of the first inner shell.

[0030] Preferably, a first blocking bar and a second blocking bar are respectively arranged between the two third blocking bars; a water trough is formed between the first blocking bar, the second blocking bar and the third blocking bar; and first through holes are respectively arranged at both ends of the water trough to connect and conduct the water trough and the branch pipe.

[0031] Preferably, the water tank is a round-shaped tank; or, the water tank is arranged in an S shape.

[0032] Preferably, the number of the first through holes is the same as the number of the branch pipes.

[0033] Preferably, the first roller 2 is a heating roller, and hot water is passed into the first roller 2; the third roller 4 and the fourth roller 5 are cold water rollers, and cold water is passed into the third roller 4 and the fourth roller 5.

[0034] Preferably, the first roller 2, the third roller 4 and the fourth roller 5 have the same structure; the two ends of the third roller 4 respectively penetrate the side walls of the corresponding installation box and are rotatably connected to the second fixed ring fixedly arranged on the inner wall of the installation box; the third roller 4 is located at one end of the second installation box and is installed with a second water inlet and outlet assembly 75, and the second water inlet and outlet assembly 75 is used to add water to the inside of the third roller 4, or to drain the water from the inside of the third roller 4; the two ends of the fourth roller 5 respectively penetrate the side walls of the corresponding installation box, and are rotatably connected to the third fixed ring fixedly arranged on the inner wall of the installation box; the fourth roller 5 is located at one end of the second installation box and is installed with a third water inlet and outlet assembly 77, and the third water inlet and outlet assembly 77 is used to add water to the inside of the fourth roller 5, or to drain the water from the inside of the fourth roller 5.

[0035] Preferably, the first water inlet and outlet assembly 65, the second water inlet and outlet assembly 75 and the third water inlet and outlet assembly 77 have the same structure.

[0036] Optionally, the first driving assembly 6 and the second driving assembly 7 are respectively installed on the frame 1 on both sides of the roller assembly.

[0037] The first driving assembly 6 includes a first motor 61, a first base 62, a first driven wheel 64, a first water inlet and outlet assembly 65 and a first belt 66; the first base 62 is fixedly arranged on the inner wall of the first installation box; the first motor 61 is fixedly arranged on the top of the first base 62; the output end of the first motor 61 is fixedly sleeved with a first driving wheel 63; the first driven wheel 64 is fixedly sleeved on the outer periphery of the first water inlet and outlet assembly 65, and the first driven wheel 64 and the first driving wheel 63 are connected through the first belt 66.

[0038] The second driving assembly 7 includes a second motor 71, a second base 72, a second driven wheel 74, a second belt 76, a third driven wheel 78 and a fourth driven wheel 79; the second base 72 is fixedly arranged on the inner wall of the second installation box, and the second motor 71 is fixedly arranged on the top of the second base 72; the output end of the second motor 71 is fixedly sleeved with a second driving wheel 73; the second driven wheel 74 is fixedly sleeved on the outer periphery of the third water inlet and outlet assembly 77, and the fourth driven wheel 79 is fixedly sleeved on the outer periphery of the second water inlet and outlet assembly 75; the third driven wheel 78 is rotatably arranged on the inner side wall of the second installation box; the second driving wheel 73, the second driven wheel 74, the third driven wheel 78 and the fourth driven wheel 79 are connected by the second belt 76, and the second motor 71 drives the second driving wheel 73 to rotate, thereby driving the third roller 4 and the fourth roller 5 to rotate back and forth.

[0039] Optionally, the third driven wheel 78 is arranged below the fourth driven wheel 79 .

[0040] The third driving assembly 8 includes a fixed plate 81, a third motor 82, a slider 84 and a mounting plate 85; the fixed plate 81 is fixedly arranged on the outer side wall of the corresponding mounting box, a slide rail 83 is fixedly arranged on the side of the fixed plate 81 away from the mounting box, and the mounting plate 85 is slidably connected to the slide rail 83 through the slider 84; the output end of the third motor 82 is installed and connected to the mounting plate 85 to drive the mounting plate 85 to reciprocate in the vertical direction.

[0041] Optionally, both ends of the second roller 3 pass through corresponding mounting plates 85 respectively and are rotatably connected to the mounting plates 85 ; the third motor 82 drives the second roller 3 to reciprocate in the vertical direction through the mounting plates 85 .

[0042] Working principle: The production device of the elastic non-woven fabric comprises a frame, a driving assembly and a roller assembly. The roller assembly is mounted on the frame and is operated by the driving assembly. The front roller of the roller assembly consists of a first roller and a second roller, the first roller is arranged above the second roller, and the two rollers cooperate to form a roller gap. A plurality of annular protrusions are arranged on the outer peripheral surface of the second roller, and annular grooves are formed between adjacent annular protrusions, which can apply lateral pressure to the non-woven fabric.

[0043] Specifically, when the non-woven fabric passes between the first roller and the second roller, the annular protrusion compresses and stretches the surface of the non-woven fabric laterally under the action of external force. The first roller contains an internal water circulation system, which uses the circulation of heated water to increase the temperature of the roller surface, thereby thermoplastically activating the non-woven fabric material so that the fiber structure can be fixed during the stretching process. After the non-woven fabric reciprocates through the second roller, it is quickly cooled and shaped through the cooling roller assembly to achieve lateral elasticity.

[0044] In a further improvement, the first roller is further provided with a plurality of blocking bars, so that the heated water forms a water trough in the first inner cavity. The design of different blocking bars achieves uniform heating and further improves the activation effect.

[0045] The above is only a preferred specific implementation method of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed in the present application according to the technical solution and improved ideas of the present application, which should be covered by the protection scope of the present application.

Claims

1. A production device for elastic nonwoven fabric, characterized in that: It comprises a frame (1), a driving assembly and a roller assembly; the roller assembly is mounted on the frame (1); the output end of the driving assembly is connected to the input end of the roller assembly to drive the roller assembly to operate; The roller assembly comprises a first roller (2) and a second roller (3); the first roller (2) and the second roller (3) are arranged up and down and matched to form a front roller assembly, and the first roller (2) is arranged above the second roller (3); a plurality of annular protrusions are arranged on the outer periphery of the second roller (3); the annular protrusions are arranged at intervals along the axial direction of the second roller (3), and annular grooves are formed between adjacent annular protrusions; The first roller (2) comprises a first outer shell, a first inner shell and a first inner tube; connecting pipes are fixedly arranged at both ends of the first inner tube; a plurality of branch pipes are fixedly arranged on the outer circumference of the connecting pipe; the branch pipes are annular and arranged at intervals on the outer circumference of the connecting pipe; one end of the branch pipe passes through the connecting pipe and is connected to the inside of the connecting pipe; the first inner shell is sleeved on the outer circumference of the first inner tube, the first outer shell is sleeved on the outer circumference of the first inner shell, and a first inner cavity is formed between the first outer shell and the first inner shell; a plurality of first through holes are opened on the outer circumference of both ends of the first inner shell; the other end of the branch pipe passes through the corresponding first through hole of the first inner shell and is connected to the first inner cavity, and the inside of the connecting pipe is connected to the first inner cavity through the branch pipe; The number of the first through holes is the same as the number of the branch pipes.

2. The production device of an elastic nonwoven fabric according to claim 1, characterized in that: The roller assembly further comprises a third roller (4) and a fourth roller (5); the drive assembly comprises a first drive assembly (6) and a second drive assembly (7); the third roller (4) and the fourth roller (5) are arranged up and down and matched to form a rear roller assembly, and the third roller (4) is arranged above the fourth roller (5); the output end of the first drive assembly (6) is connected to the front roller assembly to drive the front roller assembly to operate; the output end of the second drive assembly (7) is connected to the rear roller assembly to drive the rear roller assembly to operate.

3. The production device of an elastic nonwoven fabric according to claim 2, characterized in that: The frame (1) comprises two installation boxes and a plurality of connecting rods; the installation boxes are respectively a first installation box and a second installation box; the first installation box and the second installation box are connected by connecting rods; the first drive assembly (6) is installed in the first installation box; the second drive assembly (7) is installed in the second installation box; A third drive assembly (8) is respectively installed at both ends of the second roller (3); the third drive assembly (8) drives the second roller (3) to reciprocate in a vertical direction; the third drive assembly (8) is respectively fixedly arranged on the outer side walls of the first installation box and the second installation box that are opposite to each other.

4. The production device of an elastic nonwoven fabric according to claim 1, characterized in that: One end of the connecting pipe fitting away from the first inner pipe passes through the side wall of the corresponding installation box and is rotatably connected to the first fixed ring fixedly arranged on the inner wall of the installation box; a first ring block is fixedly sleeved on the outer periphery of the end of the connecting pipe fitting away from the installation box; a second ring block is fixedly sleeved on the connecting pipe fitting between the installation box and the first ring block; the second ring block is concavely arranged at one end facing the first ring block, forming a first step; the branch pipe is arranged between the second ring block and the first ring block; the first inner shell is sleeved on the outer periphery of the first ring block, and the second ring blocks are respectively arranged at two ends of the first inner shell, and the two ends of the first inner shell are abutted against the first step; the first outer shell is fixedly sleeved on the outer periphery of the second ring block, and the two end covers of the first outer shell are provided with first sealing covers, and the first sealing covers are sleeved on the outer periphery of the connecting pipe fitting.

5. The production device of an elastic nonwoven fabric according to claim 4, characterized in that: Connecting pipes are provided at both ends of the first inner tube, wherein one end of the connecting pipe is sealed away from the first inner tube; the other end of the connecting pipe is extended into the installation box away from the first inner tube and is provided with a first water inlet and outlet assembly (65); the first water inlet and outlet assembly (65) is used to add water to the interior of the first roller (2) or to drain the water from the interior of the first roller (2).

6. The production device of an elastic nonwoven fabric according to claim 4, characterized in that: The first roller (2) further comprises a plurality of first blocking bars, a plurality of second blocking bars and a plurality of third blocking bars; the first blocking bars, the second blocking bars and the plurality of third blocking bars are arranged at intervals and in an alternating manner on the outer circumference of the first inner shell; The length of the first barrier strip and the second barrier strip is less than the length of the third barrier strip; the length of the first barrier strip and the second barrier strip is less than the length of the first inner shell; the length of the first inner tube is less than the length of the first inner shell, and the length of the first inner shell is less than the length of the first outer shell; One end of the first blocking strip is fixedly connected to one of the second ring blocks, and one end of the second blocking strip is fixedly connected to another second ring block; both ends of the third blocking strip are respectively fixedly connected to the second ring blocks at both ends of the first inner shell; A first blocking bar and a second blocking bar are respectively arranged between the two third blocking bars; a water trough is formed between the first blocking bar, the second blocking bar and the third blocking bar; first through holes are respectively arranged at both ends of the water trough to connect and conduct the water trough and the branch pipe; The water tank is a circular tank; or, the water tank is arranged in an S shape.

7. The production device of an elastic nonwoven fabric according to claim 5, characterized in that: The first roller (2) is a heating roller, and hot water is passed into the interior of the first roller (2); the third roller (4) and the fourth roller (5) are cold water rollers, and cold water is passed into the interior of the third roller (4) and the fourth roller (5); The first roller (2), the third roller (4) and the fourth roller (5) have the same structure; the two ends of the third roller (4) respectively penetrate the side wall of the corresponding installation box and are rotatably connected to the second fixing ring fixedly arranged on the inner wall of the installation box; the third roller (4) is provided with a second water inlet and outlet assembly (75) at one end of the second installation box, and the second water inlet and outlet assembly (75) is used to add water to the inside of the third roller (4) or to drain the water inside the third roller (4); the two ends of the fourth roller (5) respectively penetrate the side wall of the corresponding installation box and are rotatably connected to the third fixing ring fixedly arranged on the inner wall of the installation box; the fourth roller (5) is provided with a third water inlet and outlet assembly (77) at one end of the second installation box, and the third water inlet and outlet assembly (77) is used to add water to the inside of the fourth roller (5) or to drain the water inside the fourth roller (5); The first water inlet and outlet assembly (65), the second water inlet and outlet assembly (75) and the third water inlet and outlet assembly (77) have the same structure.

8. The production device of an elastic nonwoven fabric according to claim 5, characterized in that: The first driving assembly (6) comprises a first motor (61), a first base (62), a first driven wheel (64), a first water inlet and outlet assembly (65) and a first belt (66); the first base (62) is fixedly arranged on the inner wall of the first installation box; the first motor (61) is fixedly arranged on the top of the first base (62); the output end of the first motor (61) is fixedly sleeved with a first driving wheel (63); the first driven wheel (64) is fixedly sleeved on the outer periphery of the first water inlet and outlet assembly (65), and the first driven wheel (64) and the first driving wheel (63) are connected by a first belt (66).

9. The production device of an elastic nonwoven fabric according to claim 7, characterized in that: The second driving assembly (7) comprises a second motor (71), a second base (72), a second driven wheel (74), a second belt (76), a third driven wheel (78) and a fourth driven wheel (79); the second base (72) is fixedly arranged on the inner wall of the second installation box, and the second motor (71) is fixedly arranged on the top of the second base (72); the output end of the second motor (71) is fixedly sleeved with a second driving wheel (73); the second driven wheel (74) is fixedly sleeved on the third water inlet and outlet assembly (7 7), the fourth driven wheel (79) is fixedly sleeved on the outer periphery of the second water inlet and outlet assembly (75); the third driven wheel (78) is rotatably arranged on the inner side wall of the second installation box; the second driving wheel (73), the second driven wheel (74), the third driven wheel (78) and the fourth driven wheel (79) are connected by a second belt (76); the second motor (71) drives the second driving wheel (73) to rotate, thereby driving the third roller (4) and the fourth roller (5) to rotate back and forth; The third driven wheel (78) is arranged below the fourth driven wheel (79).

10. The production device of elastic nonwoven fabric according to claim 3, characterized in that: The third driving assembly (8) comprises a fixed plate (81), a third motor (82), a slide block (84) and a mounting plate (85); the fixed plate (81) is fixedly arranged on the outer side wall of the corresponding mounting box, a slide rail (83) is fixedly arranged on a side of the fixed plate (81) away from the mounting box, and the mounting plate (85) is slidably connected to the slide rail (83) via the slide block (84); the output end of the third motor (82) is mounted and connected to the mounting plate (85) to drive the mounting plate (85) to reciprocate in a vertical direction; Both ends of the second roller (3) respectively penetrate corresponding mounting plates (85) and are rotationally connected to the mounting plates (85); the third motor (82) drives the second roller (3) to reciprocate in the vertical direction via the mounting plates (85).

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