Spun-bonded non-woven fabric web former

Abstract

The utility model discloses a spunbond non-woven fabric lapper which comprises a machine shell, a lapper curtain and an air duct assembly installed in the machine shell, the lapper curtain is installed on the machine shell, the air duct assembly comprises a main air duct and an auxiliary air duct which are arranged on the lower side of the lapper curtain in a spaced mode, and the air suction amount of the auxiliary air duct is smaller than that of the main air duct. The main air duct is used for adsorbing spun-bonded non-woven fabric filaments in the net forming area; after adsorption, the filaments enter a buffer area corresponding to the auxiliary air duct under the action of the web forming curtain; the auxiliary air duct is used for keeping the filaments on the web forming curtain, and the filaments are gradually bonded in the buffer area; by setting corresponding air ducts and corresponding air suction amounts and suction forces for different functional areas, energy can be saved.

Description

Technical Field

[0001] This utility model relates to the field of nonwoven fabric production technology, specifically to a spunbond nonwoven fabric web forming machine. Background Technology

[0002] Spunbond nonwoven fabric is mainly made of polyester and polypropylene, and features high strength, high temperature resistance, and good performance. The production of spunbond nonwoven fabric involves extruding and stretching the polymer to form continuous filaments. These filaments are then laid into a fiber web on a web-forming machine. The fiber web moves downstream under the conveyor of a web-forming curtain, and is then bonded by self-bonding, thermal bonding, chemical bonding, or mechanical reinforcement methods to become nonwoven fabric.

[0003] CN206376089U discloses a high-speed web-forming machine for hot-rolled nonwoven fabric forming equipment. The filaments are drawn by an airflow and arranged on a web-forming curtain by a filament-laying machine. A suction duct is located below the web-forming curtain to draw the arranged filaments onto the curtain, facilitating the formation of the fiber web. However, this machine only has one suction duct below the web-forming curtain. The suction force required for the fiber web to be adsorbed onto the curtain and held on the web-forming curtain differs, resulting in high suction power and energy waste. Utility Model Content

[0004] To address the aforementioned technical problems in the existing technology, this utility model provides a spunbond nonwoven fabric forming machine, which provides differential suction through main and secondary air ducts spaced apart below the mesh curtain, thus avoiding energy waste.

[0005] This utility model discloses a spunbond nonwoven fabric forming machine, including a machine housing, a forming curtain, and an air duct assembly installed in the machine housing. The forming curtain is installed on the machine housing, and the air duct assembly includes a main air duct and a secondary air duct spaced apart on the lower side of the forming curtain. The air intake of the secondary air duct is less than that of the main air duct.

[0006] Preferably, a bypass is provided on one side of the main air duct, and the secondary air duct is connected to the bypass;

[0007] The lower end of the main air duct is provided with a suction pipe, and the free end of the suction pipe is provided with a suction port.

[0008] The casing is provided with a mesh forming area and a buffer zone. The main air duct is located on the lower side of the mesh forming area, and the secondary air duct is located on the lower side of the buffer zone.

[0009] Preferably, the main air duct and the secondary air duct are integrated as a single unit.

[0010] Preferably, a partition is installed between the main air duct and the secondary air duct;

[0011] An adjustment groove is provided on the lower side of the secondary air duct, and an adjustment plate is slidably mounted on the adjustment groove;

[0012] Differential pressure gauges are installed in the main air duct and the secondary air duct, respectively.

[0013] Preferably, the outer end of the adjustment plate is provided with a handle, and a mounting component is provided on one side of the handle. The mounting component is detachably installed on the inner wall of the housing by bolts.

[0014] Preferably, it also includes a roller assembly that cooperates with the forming screen;

[0015] The roller assembly includes a first upper roller and a second upper roller spaced apart on the upper side of the housing, and a first lower roller and a second lower roller spaced apart on the lower side of the housing.

[0016] Preferably, a first boss is provided on one side of the housing.

[0017] A transfer roller is provided on the first boss;

[0018] A rotating roller is provided between the transfer roller and the first lower roller.

[0019] A tensioning roller is installed between the second upper roller and the second lower roller.

[0020] Preferably, the upper ends of the main air duct and the secondary air duct are provided with guide members that cooperate with the net curtain.

[0021] Preferably, a maintenance door is provided on one side of the housing, and a handle is provided on the outside of the maintenance door;

[0022] At least one set of drive components is provided on the other side of the housing.

[0023] The drive assembly includes a driver and a reducer. The output end of the driver is connected to the reducer, and the output end of the reducer is connected to the roller of the roller assembly.

[0024] Compared with the prior art, the beneficial effects of this utility model are as follows: the main air duct is used to adsorb the spunbond nonwoven fabric filaments in the web forming area; after adsorption, the filaments enter the buffer zone corresponding to the secondary air duct under the action of the web forming curtain; the secondary air duct is used to keep the filaments on the web forming curtain, and the filaments gradually bond together in the buffer zone; by setting corresponding air ducts and corresponding air volume and suction force for different functional areas, energy can be saved. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of a spunbond nonwoven fabric web forming machine;

[0026] Figure 2 This is a structural diagram of the air duct assembly;

[0027] Figure 3 This is a cross-sectional view of the air duct assembly;

[0028] Figure 4This is a schematic diagram of the guide component installation;

[0029] Figure 5 This is a diagram illustrating the installation of the driver components.

[0030] The diagram shows: 1. Spunbond nonwoven fabric forming machine; 11. Machine casing; 12. First boss; 13. Maintenance door; 14. Handle; 15. Electrical box; 16. Forming area; 17. Buffer zone; 18. Transfer area.

[0031] 2. Roller assembly; 21. Transfer roller; 22. First upper roller; 23. Second upper roller; 24. Tensioning roller; 25. Rotating roller; 26. First lower roller; 27. Second lower roller;

[0032] 4. Air duct assembly; 41. Main air duct; 42. Secondary air duct; 43. Partition plate; 431. Bypass; 44. Adjustment plate; 441. Handle; 442. Mounting component; 45. Guide component; 47. Suction port; 471. Suction pipe; 5. Net curtain; 6. Drive assembly; 61. Reducer; 62. Driver. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0034] The present invention will now be described in further detail with reference to the accompanying drawings:

[0035] Example 1. As... Figures 1-5 The spunbond nonwoven fabric forming machine 1 includes a machine housing 11, a forming curtain 5, and an air duct assembly 4 installed inside the machine housing 11. The forming curtain 5 is installed on the machine housing 11. The air duct assembly 4 includes a main air duct 41 and a secondary air duct 42 spaced apart below the forming curtain 5. The air intake of the secondary air duct 42 is less than that of the main air duct 41. The pressure difference between the secondary air duct 42 and the outside is less than that between the main air duct and the outside.

[0036] The main air duct 41 is used to adsorb the spunbond nonwoven fabric filaments in the web forming area 16. After adsorption, the filaments enter the buffer zone 17 corresponding to the secondary air duct 42 under the action of the web forming curtain 5. The secondary air duct 42 is used to keep the filaments on the web forming curtain 5, and the filaments gradually bond together in the buffer zone. By setting corresponding air ducts and corresponding air volume and suction force for different functional areas, energy can be saved.

[0037] The main air duct 41 and the secondary air duct 42 can be configured as independent air ducts and have independent air intake components.

[0038] Example 2. (As shown) Figure 3 Unlike Embodiment 1, the main air duct 41 and the secondary air duct 42 are constructed as a single unit. A bypass 431 is provided on one side of the main air duct 41, and the secondary air duct 42 is connected to the bypass 431. A suction pipe 471 is provided at the lower end of the main air duct 41, and a suction interface 47 is provided at the free end of the suction pipe 471 for connecting to external suction components, such as a vacuum pump, negative pressure box, or negative pressure tank. The housing 11 is provided with a web forming area 16, a buffer zone 17, and a transfer area 18. The main air duct 41 is located below the web forming area 16, and the secondary air duct 42 is located below the buffer zone 17. The transfer area 18 is used to transfer the spunbond nonwoven fabric fiber web to downstream components, such as to a hot rolling roller.

[0039] A partition 43 is provided between the main air duct 41 and the secondary air duct 42 to block the two air ducts. The opening of the bypass 431 is pre-designed. After the suction is provided from the suction port 47 on the suction pipe 471, the suction is distributed between the main air duct 41 and the secondary air duct 42.

[0040] Example 3. Unlike Example 2, the opening degree of bypass 431 can be adjusted to a certain extent. For example... Figure 2 An adjustment groove is provided on the lower side of the secondary air duct 42, and an adjustment plate 44 is slidably mounted on the adjustment groove. More specifically, a rubber ring is provided on the adjustment groove, and the adjustment plate 44 is interference-fitted with the rubber ring to prevent air leakage in the adjustment groove. Differential pressure gauges are respectively installed in the main air duct 41 and the secondary air duct 42 to detect the pressure difference between the two air ducts and the outside.

[0041] More specifically, the outer end of the adjusting plate 44 is provided with a handle 441, and a mounting part 442 is provided on one side of the handle 441. The mounting part 442 is detachably installed on the inner wall of the housing 11 by bolts to fix the adjusting plate 44. The inner wall of the housing 11 can be pre-set with multiple sets of screw holes to realize the adjustment of multiple opening positions.

[0042] Figure 3 The roller assembly 2, which cooperates with the forming curtain 5, is also shown. The rollers of the roller assembly 2 include a first upper roller 22 and a second upper roller 23 spaced apart on the upper side of the housing 11, and a first lower roller 26 and a second lower roller 27 spaced apart on the lower side of the housing 11. A first boss 12 is provided on one side of the housing 11, and a transfer roller 21 is provided on the first boss 12; a rotating roller 25 is provided between the transfer roller 21 and the first lower roller 26; and a tensioning roller 24 is provided between the second upper roller 23 and the second lower roller 27.

[0043] Example 4. (As shown) Figure 4 The upper ends of the main air duct 41 and the secondary air duct 42 are provided with guide members 45 that cooperate with the net curtain 5. The guide members 45 are slidably engaged with the net curtain 5 to support the net curtain 5 and reduce the deformation of the net curtain 5 caused by suction.

[0044] A maintenance door 13 is provided on one side of the housing 11, and a handle 14 is provided on the outside of the maintenance door 13. Figure 5 On the other side of the housing 11, at least one set of drive components 6 is provided. The drive components 6 include a driver 62 and a reducer 61. The output end of the driver 62 is connected to the reducer 61, and the output end of the reducer 61 is connected to the roller of the roller assembly 2. Figure 5 Only the drive assembly 6 of the first upper roller 22 is shown, which serves as the driving roller, but it is not limited to this; the drive assembly 6 can also be installed on other rollers. The driver 62 can be a motor, such as a stepper motor. An electrical box 15 can also be installed on one side of the housing 11.

[0045] This invention utilizes the main air duct 41 under the web forming zone 16 and the secondary air duct under the buffer zone 17 to adapt to different processing conditions and adsorption forces, reduce energy loss of the spunbond nonwoven fabric web forming machine, and introduces an external suction component to reduce vibration caused by the suction component.

[0046] The air intake of the bypass 431 and the secondary air duct 42 can be adjusted via the adjusting plate 44, facilitating maintenance and adapting to different processing techniques and products. After the web is formed, the web fibers are transferred to downstream components via the first protrusion 12 of the transfer area 18.

[0047] It should be noted that although this utility model is based on the web-forming process of spunbond nonwoven fabric, it can also be applied to the web-forming production of other types of nonwoven fabrics.

[0048] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A spunbond nonwoven fabric web forming machine, characterized in that, It includes a housing (11), a wire mesh curtain (5), and an air duct assembly (4) installed inside the housing (11), wherein the wire mesh curtain (5) is installed on the housing (11). The air duct assembly (4) includes a main air duct (41) and a secondary air duct (42) spaced apart on the lower side of the mesh curtain (5). The air volume of the secondary air duct (42) is less than that of the main air duct (41).

2. The spunbond nonwoven fabric web forming machine according to claim 1, characterized in that, A bypass (431) is provided on one side of the main air duct (41), and the secondary air duct (42) is connected to the bypass (431); The lower end of the main air duct (41) is provided with a suction pipe (471), and the free end of the suction pipe (471) is provided with a suction port (47). The casing (11) is provided with a mesh forming area (16) and a buffer zone (17). The main air duct (41) is located on the lower side of the mesh forming area (16), and the secondary air duct (42) is located on the lower side of the buffer zone (17).

3. The spunbond nonwoven fabric web forming machine according to claim 2, characterized in that, The main air duct (41) and the secondary air duct (42) are a single unit.

4. The spunbond nonwoven fabric web forming machine according to claim 2, characterized in that, A partition (43) is provided between the main air duct (41) and the secondary air duct (42); An adjustment groove is provided on the lower side of the secondary air duct (42), and an adjustment plate (44) is slidably installed on the adjustment groove; Differential pressure gauges are installed in the main air duct (41) and the secondary air duct (42).

5. The spunbond nonwoven fabric web forming machine according to claim 4, characterized in that, The adjustment plate (44) is provided with a handle (441) at its outer end. A mounting part (442) is provided on one side of the handle (441). The mounting part (442) is detachably mounted on the inner wall of the housing (11) by bolts.

6. The spunbond nonwoven fabric web forming machine according to claim 1, characterized in that, It also includes a roller assembly (2) that works in conjunction with the netting curtain (5); The roller assembly (2) includes a first upper roller (22) and a second upper roller (23) spaced apart on the upper side of the housing (11), and a first lower roller (26) and a second lower roller (27) spaced apart on the lower side of the housing (11).

7. The spunbond nonwoven fabric web forming machine according to claim 6, characterized in that, A first boss (12) is provided on one side of the housing (11). The first boss (12) is provided with a transfer roller (21); A rotating roller (25) is provided between the transfer roller (21) and the first lower roller (26); A tensioning roller (24) is provided between the second upper roller (23) and the second lower roller (27).

8. The spunbond nonwoven fabric web forming machine according to claim 6, characterized in that, The upper ends of the main air duct (41) and the secondary air duct (42) are provided with guide members (45) that cooperate with the net curtain (5).

9. The spunbond nonwoven fabric web forming machine according to claim 6, characterized in that, A maintenance door (13) is provided on one side of the housing (11), and a handle (14) is provided on the outside of the maintenance door (13); At least one set of drive components (6) is provided on the other side of the housing (11). The drive assembly (6) includes a driver (62) and a reducer (61). The output end of the driver (62) is connected to the reducer (61), and the output end of the reducer (61) is connected to the roller of the roller assembly (2).

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