A meltblown machine structure with adjustable gate width

Abstract

The application discloses a melt-blowing machine structure with adjustable gate width and belongs to the technical field of melt-blowing machines. The melt-blowing machine structure comprises a large frame assembly, a whole machine, a die head device, a blower, a cold water tower, a small frame assembly, a high-pressure centrifugal fan, an electret electrostatic treatment machine, a hydraulic station, a cold air pipe assembly, an air conditioner fan, a web forming machine and a winding machine. The large frame assembly is provided with the whole machine, the hydraulic station, the die head device, the cold air pipe assembly and the web forming machine. The whole machine, the die head device, the cold air pipe assembly and the web forming machine are arranged in the same longitudinal operation space from top to bottom. The cold air pipe assembly is arranged at the upper end of the web forming machine. The blower and the high-pressure centrifugal fan are arranged on one side of the large frame assembly. The small frame assembly is provided with the cold water tower and the air conditioner fan. The electret electrostatic treatment machine and the winding machine are arranged at the front end of the web forming machine, and the winding machine is located at the front side of the electret electrostatic treatment machine. The melt-blowing machine structure effectively increases the working efficiency and is convenient for the use of workers.

Description

Technical Field

[0001] This invention belongs to the field of meltblown machine technology, and particularly relates to a meltblown machine structure with adjustable width. Background Technology

[0002] Currently, meltblown fabrics produced by meltblown machines on the market are all of fixed width. To produce products of different specifications, the products need to be slit, resulting in excessive material residue on both sides and product waste. To change this, the fabric width needs to be changed to meet the requirements of different product specifications. The common practice is to use different sized dies, which requires frequent die changes, increases equipment downtime, and consumes manpower and resources. Furthermore, preparing dies of different sizes increases equipment and maintenance costs excessively.

[0003] Therefore, there is an urgent need for a meltblown machine structure with adjustable width to solve the above-mentioned technical problems. Summary of the Invention

[0004] The purpose of this invention is to provide a meltblown machine structure with adjustable width to solve the above-mentioned technical problems.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a meltblown machine structure with adjustable width, comprising a large frame assembly, a complete machine, a die head device, a blower, a cooling tower, a small frame assembly, a high-pressure centrifugal fan, an electret electrostatic treatment machine, a hydraulic station, a cold air duct assembly, an air conditioning fan, a web forming machine, and a winding machine; the complete machine and hydraulic station are arranged at the upper end of the large frame assembly, and the die head device, cold air duct assembly, and web forming machine are arranged at the lower end of the large frame assembly; the complete machine, die head device, cold air duct assembly, and web forming machine are arranged from top to bottom in the same longitudinal operating space; the cold air duct assembly is arranged at the upper end of the web forming machine; the blower and high-pressure centrifugal fan are arranged on one side of the large frame assembly; the small frame assembly is arranged at the rear end of the large frame assembly, and a cooling tower and an air conditioning fan are arranged on the small frame assembly; the electret electrostatic treatment machine and the winding machine are arranged at the front end of the web forming machine, and the winding machine is located in front of the electret electrostatic treatment machine; the high-pressure centrifugal fan is connected to the web forming machine via an exhaust duct.

[0006] The complete machine includes a die head rotating device, a feeder, an extruder, a screen changer, a metering pump, and a heating tank. The die head rotating device is rotatably mounted on the large frame assembly via a turntable fixing plate. A hydraulic rod is connected to the side of the die head rotating device, and a rotating pair is provided on the front side of the die head rotating device. The turntable fixing plate is fixed to the front and rear sides of the large frame assembly, and the turntable fixing plate has an arc-shaped structure, with the centers of both turntable fixing plates facing the inner side of the complete machine.

[0007] The rotation angle of the mold head rotating device is 0-30 degrees.

[0008] The web forming machine is located below the die head device. The web forming machine includes a base and a web forming mechanism. The web forming mechanism is located on the upper end of the base and a flap cover plate is provided on the web forming mechanism. The lower end of the base is slidably placed on the ground via two guide rollers. The flap cover plate is located below the cold air duct assembly.

[0009] The cold air duct assembly is mounted on the mold head device via a duct frame. Two air inlets are provided on one side of the cold air duct assembly, which are connected to the air inlets via air conditioning pipes, thus connecting the cold air duct assembly and the air conditioning fan.

[0010] The duct frame is equipped with a feed screw, a first slider, a linear guide rail, a worm gear, a worm wheel, a screw, and a second slider. The linear guide rail is fixedly mounted on the lower surface of the duct frame, and the first slider is slidably mounted on the linear guide rail. The feed screw is rotatably mounted on one side of the linear guide rail, and the second slider is slidably mounted on the feed screw. The first slider and the second slider are fixedly connected by a fixing plate. One end of the screw is fixed to the fixing plate, and the other end of the screw is located on both sides of the cold air duct assembly. The worm gear is rotatably mounted at the lower end of the fixing plate, and the worm gear meshes with the worm wheel, which is sleeved on the outside of the screw.

[0011] The rotating pair includes a rotating sleeve, a rotating upper fixed plate, and a rotating base plate; the rotating upper fixed plate is fixed to the bottom of the mold head rotating device by bolts; the rotating base plate is located at the front of the large frame assembly and is connected to the large frame assembly by bolts, and a plane bearing is installed inside it; the rotating sleeve is fixed on the rotating upper fixed plate, and the rotating sleeve and the rotating base plate of the large frame assembly are connected by a plane bearing.

[0012] The extruder is connected to a feeder and a screen changer at both ends; the screen changer is connected to a metering pump, and the other end of the metering pump is connected to a feed pipeline; one end of the heating tank is connected to a blower via an air pipe, and the other end of the heating tank is connected to a die head assembly via a die head pipe group.

[0013] The mold head pipe assembly includes a main pipe I, a main pipe II, a heating pipe I, and a heating pipe II; one end of the main pipe I is connected to the heating tank, and the other end of the main pipe I is connected to the middle of the main pipe II; the main pipe II is arranged parallel to the upper end of the mold head rotating device, and heating pipe I and heating pipe II are provided at both ends of the main pipe II.

[0014] The die head device is set at the lower end of the die head rotating device via a screw. Two heating ports are provided on both sides of the die head device. The die head device is connected to the heating pipe one and the heating pipe two via the heating ports. A feed port is opened at the upper end of the die head device, and the feed pipe is inserted into the die head device through the feed port.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] The meltblown machine structure of the present invention is equipped with a die head rotating device, which can support the die head and drive the die head to rotate together. The die head rotating device and the die head rotate together with the large frame assembly. In use, according to the usage requirements, the width cover plate of the web forming machine can be changed to different sizes, and the die head can be rotated to different angles. This eliminates the need to frequently replace the die head when changing the width cover plate, reducing manpower and material resources, and eliminating the need to prepare dies of different specifications, thus reducing excessive maintenance costs.

[0017] The die head rotating device of the present invention is provided with a rotating pair, so that the die head rotating device does not affect the feeding while rotating, thereby increasing the working efficiency.

[0018] The meltblown machine structure of this invention effectively increases work efficiency, facilitates use by staff, has improved performance, higher overall stability, reliable connection, and stable structure. Attached Figure Description

[0019] Figure 1 A schematic diagram of a meltblown machine structure with adjustable span. Figure 1 ;

[0020] Figure 2 A schematic diagram of a meltblown machine structure with adjustable span. Figure 2 ;

[0021] Figure 3 This is a schematic diagram of the entire machine;

[0022] Figure 4 Schematic diagram of a revolute joint Figure 1 ;

[0023] Figure 5 Schematic diagram of a revolute joint Figure 2 ;

[0024] Figure 6 This is a schematic diagram of the duct frame;

[0025] Figure 7 This is a schematic diagram of a meltblown machine structure with adjustable span.

[0026] In the diagram: 1. Large frame assembly; 2. Complete machine; 3. Die head assembly; 4. Blower; 5. Cooling tower; 6. Small frame assembly; 7. High-pressure centrifugal fan; 8. Electret electrostatic treatment machine; 9. Hydraulic station; 10. Cold air duct assembly; 11. Air conditioning fan; 12. Web forming machine; 13. Winding machine; 14. Flat plate; 15. Large frame; 16. Die head rotation device; 17. Feeder; 18. Extruder; 19. Screen changer; 20. Metering pump; 21. Heating tank; 22. Turntable fixing plate; 23. 24. Hydraulic rod; 25. Rotating sleeve; 26. Rotating upper fixed plate; 27. Rotating base plate; 28. Feed pipe; 29. ​​Blower pipe; 30. Base; 31. Mesh forming mechanism; 32. Door cover plate; 33. Heating tube one; 34. Heating tube two; 35. Slider one; 36. Linear guide rail; 37. Worm gear; 38. Lead screw; 39. Slider two; 40. Fixed plate; 41. Die head pipe assembly; 42. Air duct frame; 43. Main pipe one; 44. Main pipe two; 45. Feed lead screw. Detailed Implementation

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] Please see Figure 1-7 This invention provides a technical solution: a meltblown machine structure with adjustable width, comprising a large frame assembly 1, a complete machine 2, a die head device 3, a blower 4, a cooling tower 5, a small frame assembly 6, a high-pressure centrifugal fan 7, an electret electrostatic treatment machine 8, a hydraulic station 9, a cold air duct assembly 10, an air conditioning fan 11, a web forming machine 12, and a winding machine 13; the upper end of the large frame assembly 1 is provided with the complete machine 2 and the hydraulic station 9, and the lower end of the large frame assembly 1 is provided with the die head device 3, the cold air duct assembly 10, and the web forming machine 12; the complete machine 2... The die head device 3, the cold air duct assembly 10, and the web forming machine 12 are arranged from top to bottom in the same longitudinal operating space; the cold air duct assembly 10 is located at the upper end of the web forming machine 12; the blower 4 and the high-pressure centrifugal fan 7 are located on one side of the large frame assembly 1; the small frame assembly 6 is located at the rear end of the large frame assembly 1, and a cooling tower 5 and an air conditioning fan 11 are installed on the small frame assembly 6; the electret electrostatic treatment machine 8 and the winding machine 13 are located at the front end of the web forming machine 12, and the winding machine 13 is located in front of the electret electrostatic treatment machine 8.

[0029] The large frame assembly 1 includes multiple flat plates 14 and a large frame 15. The flat plates 14 are laid on the large frame 15 to form a working platform. A staircase is installed on one side of the flat plate 14 to facilitate workers' access. At the same time, to increase the stability of the large frame assembly 1, reinforcing ribs can be welded onto the large frame 15, making the support more stable.

[0030] The front side of the large frame 15 has an installation area that is not covered by the flat plate 14, which provides sufficient installation space for the whole machine 2 and the mold head device 3 when they are connected.

[0031] The complete machine 2 includes a die head rotating device 16, a feeder 17, an extruder 18, a screen changer 19, a metering pump 20, and a heating tank 21. The die head rotating device 16 is rotatably mounted on the large frame assembly 1 via a turntable fixing plate 22. The rotation angle of the die head rotating device 16 is 0-30 degrees. A hydraulic rod 23 is connected to the side of the die head rotating device 16, and a rotating pair is provided on the front side of the die head rotating device 16. The two ends of the extruder 18 are respectively connected to the feeder 17 and the screen changer 19. The screen changer 19 is connected to the metering pump 20, and the other end of the metering pump 20 is connected to a feed pipe 27. One end of the heating tank 21 is connected to a blower 4 via an air pipe 28, and the other end of the heating tank 21 is connected to the die head assembly 3 via a die head pipe group 41.

[0032] The rotating pair includes a rotating sleeve 24, a rotating upper fixed plate 25, and a rotating base plate 26; the rotating upper fixed plate 25 is fixed to the bottom of the mold head rotating device 16 by bolts; the rotating base plate 26 is located at the front of the large frame 15 and is connected to the large frame 15 by bolts, and a plane bearing is installed inside it; the rotating sleeve 24 is fixed on the rotating upper fixed plate 25, and the rotating sleeve 24 and the rotating base plate 26 of the large frame 15 are connected by a plane bearing to form a rotating pair.

[0033] The turntable fixing plate 22 is fixed on the front and rear sides of the large frame assembly 1, and the turntable fixing plate 22 has an arc-shaped structure. The center of the two turntable fixing plates 22 is set facing the inner side of the whole machine 2, so that the front and rear sides of the mold head rotating device 16 can rotate in opposite directions on the turntable fixing plate 22.

[0034] The hydraulic station 9 provides power to the hydraulic rod 23. During operation, the mold head rotating device 16 receives the thrust and pull of the hydraulic rod 23, thereby rotating.

[0035] The mold head pipe assembly 41 includes a main pipe 43, a second main pipe 44, a first heating pipe 32, and a second heating pipe 33; one end of the first main pipe 43 is connected to the heating tank 21, and the other end of the first main pipe 43 is connected to the middle of the second main pipe 44; the second main pipe 44 is arranged parallel to the upper end of the mold head rotating device 16, and both ends of the second main pipe 44 are provided with a first heating pipe 32 and a second heating pipe 33.

[0036] The extruder 18 has a feed inlet and a discharge outlet at both ends. The feed suction machine 17 is installed at the feed inlet of the extruder 18, and the raw material entering through the feed suction machine 17 can be directly sucked into the extruder 18. In use, the extruder 18 is a device that transforms the raw material from solid particles into a high-temperature melt. It is the first step in the molding process and rotates together with the die head rotating device 16.

[0037] The heating tank 21 is located next to the extruder 18, and the heated high-temperature and high-pressure air is sent into the die head device 3 through the die head pipe assembly 41.

[0038] The screen changer 19 is a manual or automatic switching device that includes one or more filter screens. The screen changer 19 can filter out foreign particles and impurities when the plasticized material flows through the filter screen. The screen changer 19 is connected to the discharge port of the extruder 18 and sends the filtered high-temperature melt into the metering pump 20. The screen changer 19 is provided with an inlet and an outlet at both ends. The outlet of the screen changer 19 is connected to the inlet of the metering pump 20 through the metering pump connector. The outlet of the metering pump 20 sends the high-temperature fluid raw material into the die head device 3 through the die head pipe assembly 41.

[0039] The mold head device 3 is set at the lower end of the mold head rotating device 16 via a screw. Two heating ports are provided on both sides of the mold head device 3. The mold head device 3 is connected to the heating tube 32 and the heating tube 33 via the heating ports.

[0040] In use, the mold head device 3 is rotated synchronously by rotating the mold head rotating device 16.

[0041] The upper end of the die head device 3 is provided with a feed port, and the feed pipe 27 is inserted into the die head device 3 through the feed port, so that the raw material enters the die head device 3.

[0042] The die head device 3 is the main component for raw material forming. It transforms the viscous polymer melt or solution into fine streams with a specific cross-sectional shape through micropores, and then solidifies them into filaments through a solidification medium such as air or a solidification bath. The die head device 3 enables the plastic melt in the extruder 18 to be evenly distributed in the flow channel of the die head device 3, and to be extruded from the die at a uniform speed.

[0043] The web forming machine 12 is the main forming device, located below the die head device 3. The web forming machine 12 includes a base 29 and a web forming mechanism 30. The web forming mechanism 30 is set on the upper end of the base 29, and a flap cover plate 31 is set on the web forming mechanism 30. The lower end of the base 29 is slidably set on the ground via two guide rollers, and can slide back and forth as needed during use.

[0044] The flap cover 31 is located below the cold air duct assembly 10. The flap cover 31 of the present invention can be changed according to production needs. When the flap cover 31 is changed to different sizes, the die head device 3 rotates to different angles.

[0045] When the die head device 3 rotates at 0 degrees, the maximum width cover plate is used; when the die head device 3 rotates at 30 degrees, the minimum width cover plate is used. This design eliminates the need for frequent die head replacements when changing the width cover plate, reducing manpower and material resources, and eliminating the need to prepare additional die heads of different specifications, thus lowering maintenance costs.

[0046] The blower 4 is connected to a pressure relief duct, which is used to relieve pressure and reduce the outlet air pressure. The blower 4 is located on the periphery of the entire structure and is a device that provides high-pressure air to the mold head device 3. The high-pressure air is sent into the heating tank 21 through the blower pipe 28.

[0047] The small frame component 6 has stairs on both sides for going up and down.

[0048] The high-pressure centrifugal fan 7 is connected to the web forming machine 12 via an air duct. The high-pressure centrifugal fan 7 is located on the periphery of the entire structure, so that the ultrafine fibers sprayed from the spinneret are firmly adsorbed onto the web forming machine 12.

[0049] The cold air duct assembly 10 is mounted on the die head device 3 via the duct frame 42. Two air inlets are provided on one side of the cold air duct assembly 10, which are connected to the air inlets via air conditioning ducts, connecting the cold air duct assembly 10 and the air conditioning fan 11. In use, the cold air duct assembly 10 serves as the air outlet of the air conditioning duct, rapidly cooling and molding the raw material ejected from the die head device 3.

[0050] The duct frame 42 is equipped with a feed screw 45, a first slider 34, a linear guide rail 35, a worm gear 36, a worm wheel 37, a screw 38, and a second slider 39. The linear guide rail 35 is fixedly mounted on the lower surface of the duct frame 42, and the first slider 34 is slidably mounted on the linear guide rail 35. The feed screw 45 is rotatably mounted on one side of the linear guide rail 35, and the second slider 39 is slidably mounted on the feed screw 45. The first slider 34 and the second slider 39 are fixedly connected by a fixing plate 40. One end of the screw 38 is fixed to the fixing plate 40, and the other end of the screw 38 is mounted on both sides of the cold air duct assembly 10. The worm gear 36 is rotatably mounted on the lower end of the fixing plate 40, and the worm gear 36 meshes with the worm wheel 37, which is sleeved on the outside of the screw 38.

[0051] When the feed screw 45 is rotated, the second slider 39 moves back and forth on the feed screw 45, causing the first slider 34, which is fixed to the second slider 39, to slide, and the fixed plate 40 and the cold air duct assembly 10 at the lower end of the fixed plate 40 to move back and forth; when the worm 36 is rotated, the worm 36 drives the worm wheel 37 to rotate, causing the screw 38 inside the worm wheel 37 to move up and down, causing the cold air duct assembly 10 at the lower end of the screw 38 to move up and down.

[0052] The air conditioner fan 11 frame is located at the rear of the meltblown mechanism, providing an installation position for the entire air conditioner fan 11.

[0053] The air conditioner fan 11 is located on the air conditioner mounting rack. The cold air from the air conditioner is transported to the cold air duct assembly 10 through the air conditioner duct to form the entire cold air system. The cold air system enables the molten plastic sprayed from the die head device 3 to quickly form ultrafine fibers.

[0054] In order to fix the air conditioning ducts and blower ducts to the melt-blown mechanism, air conditioning duct supports and blower duct supports are installed between the air conditioning ducts and blower ducts and the large frame assembly 1. The air conditioning duct supports and blower duct supports are bolted to the large frame assembly 1 through mounting plates to provide support and fixation for the air conditioning ducts and blower ducts; guardrails can be installed around the large frame assembly 1 and at the edge of the stairs to provide safety for workers.

[0055] When the electret electrostatic treatment machine 8 is in use, the electrostatic electret equipment attaches charges to the meltblown nonwoven fabric through high-voltage discharge, thereby giving the meltblown nonwoven fabric a stronger filtration effect.

[0056] The winding machine 13 is located in the final process of the entire equipment. It cuts the produced meltblown nonwoven fabric and automatically winds it up.

[0057] When the meltblown machine of the present invention is working, the raw material is put into the feeder 17, and the raw material is transformed from solid particles into high-temperature melt by the extruder 18; the screen changer 19 filters out foreign particles and impurities when the plasticized material flows through the filter screen, and sends the filtered high-temperature melt into the metering pump 20; the metering pump 20 sends the high-temperature fluid raw material into the die head device 3 through the die head pipe assembly 41; at the same time, the blower 4 provides high-pressure air and sends the high-pressure air into the heating tank 21, and sends the heated high-temperature high-pressure air into the die head device 3 through the die head pipe assembly 41; After processing by the die head device 3, the nonwoven fabric is fed onto the web forming machine 12, and the high-pressure centrifugal fan 7 firmly adsorbs the fine fibers onto the web forming machine 12. At the same time, the air conditioning fan 11 delivers cold air to the cold air duct assembly 10 through the air conditioning pipe, so that the molten plastic sprayed from the die head device 3 quickly forms ultrafine fibers. Through the high-voltage discharge of the electret electrostatic treatment machine 8, the charge is attached to the meltblown nonwoven fabric, so that the meltblown nonwoven fabric has a stronger filtration effect. Finally, the produced meltblown nonwoven fabric is cut by the winding machine 13 and automatically wound up.

[0058] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A meltblown machine structure with adjustable width, characterized in that, The system includes a large frame assembly (1), a complete machine (2), a die head device (3), a blower (4), a cooling tower (5), a small frame assembly (6), a high-pressure centrifugal fan (7), an electret electrostatic treatment machine (8), a hydraulic station (9), a cold air duct assembly (10), an air conditioning fan (11), a web forming machine (12), and a winding machine (13); the upper end of the large frame assembly (1) is equipped with the complete machine (2) and the hydraulic station (9), and the lower end of the large frame assembly (1) is equipped with the die head device (3), the cold air duct assembly (10), and the web forming machine (12); the complete machine (2), the die head device (3), the cold air duct assembly (10), and the web forming machine (12) The components are arranged in the same vertical operating space from top to bottom; the cold air duct assembly (10) is located at the upper end of the web forming machine (12); the blower (4) and the high-pressure centrifugal fan (7) are located on one side of the large frame assembly (1); the small frame assembly (6) is located at the rear end of the large frame assembly (1), and a cooling tower (5) and an air conditioning fan (11) are provided on the small frame assembly (6); the electret electrostatic treatment machine (8) and the winding machine (13) are located at the front end of the web forming machine (12), and the winding machine (13) is located in front of the electret electrostatic treatment machine (8); the high-pressure centrifugal fan (7) is connected to the web forming machine (12) via an air duct. The complete machine (2) includes a die head rotating device (16), a feeder (17), an extruder (18), a screen changer (19), a metering pump (20), and a heating tank (21). The die head rotating device (16) is rotatably mounted on the large frame assembly (1) via a turntable fixing plate (22). A hydraulic rod (23) is connected to the side of the die head rotating device (16), and a rotating pair is provided on the front side of the die head rotating device (16). The turntable fixing plate (22) is fixed on the front and rear sides of the large frame assembly (1), and the turntable fixing plate (22) has an arc-shaped structure. The centers of the two turntable fixing plates (22) are both set facing the inner side of the complete machine (2). The rotating pair includes a rotating sleeve (24), a rotating upper fixed plate (25), and a rotating base plate (26); the rotating upper fixed plate (25) is fixed to the bottom of the mold head rotating device (16) by bolts; the rotating base plate (26) is located at the front of the large frame assembly (1) and is connected to the large frame assembly (1) by bolts, and a plane bearing is installed inside it; the rotating sleeve (24) is fixed on the rotating upper fixed plate (25), and the rotating sleeve (24) and the rotating base plate (26) of the large frame assembly (1) are connected by a plane bearing.

2. The meltblown machine structure with adjustable width according to claim 1, characterized in that: The rotation angle of the mold head rotating device (16) is 0-30 degrees.

3. The meltblown machine structure with adjustable width according to claim 1, characterized in that: The web forming machine (12) is located below the die head device (3). The web forming machine (12) includes a base (29) and a web forming mechanism (30). The web forming mechanism (30) is located on the upper end of the base (29), and a flap cover plate (31) is provided on the web forming mechanism (30). The lower end of the base (29) is slidably placed on the ground via two guide rollers. The flap cover plate (31) is located below the cold air duct assembly (10).

4. The meltblown machine structure with adjustable width according to claim 1, characterized in that: The cold air duct assembly (10) is installed on the mold head device (3) through the duct frame (42). Two air inlets are provided on one side of the cold air duct assembly (10), which are connected to the air inlets through the air conditioning pipe, connecting the cold air duct assembly (10) and the air conditioning fan (11).

5. The meltblown machine structure with adjustable width according to claim 4, characterized in that: The duct frame (42) is provided with a feed screw (45), a first slider (34), a linear guide rail (35), a worm gear (36), a worm wheel (37), a screw (38), and a second slider (39); the linear guide rail (35) is fixedly installed on the lower surface of the duct frame (42), and the first slider (34) is slidably installed on the linear guide rail (35); the feed screw (45) is rotatably installed on one side of the linear guide rail (35). A second slider (39) is provided on the upper sliding side, and a fixed plate (40) is fixedly connected between the first slider (34) and the second slider (39); one end of the lead screw (38) is fixed on the fixed plate (40), and the other end of the lead screw (38) is provided on both sides of the cold air duct assembly (10); the worm (36) is rotatably provided at the lower end of the fixed plate (40), and the worm (36) meshes with the worm wheel (37), and the worm wheel (37) is sleeved on the outside of the lead screw (38).

6. The meltblown machine structure with adjustable width according to claim 1, characterized in that: The extruder (18) is connected to a feeder (17) and a screen changer (19) at both ends respectively; the screen changer (19) is connected to a metering pump (20), and the other end of the metering pump (20) is connected to a feed pipe (27); one end of the heating tank (21) is connected to a blower (4) via a blower pipe (28), and the other end of the heating tank (21) is connected to a die head device (3) via a die head pipe assembly (41).

7. The meltblown machine structure with adjustable width according to claim 6, characterized in that: The mold head pipe assembly (41) includes a main pipe (43), a second main pipe (44), a first heating pipe (32), and a second heating pipe (33); one end of the first main pipe (43) is connected to the heating tank (21), and the other end of the first main pipe (43) is connected to the middle of the second main pipe (44); the second main pipe (44) is arranged parallel to the upper end of the mold head rotating device (16), and both ends of the second main pipe (44) are provided with a first heating pipe (32) and a second heating pipe (33).

8. The meltblown machine structure with adjustable width according to claim 7, characterized in that: The die head device (3) is set at the lower end of the die head rotating device (16) via a screw. Two heating ports are provided on both sides of the die head device (3). The die head device (3) is connected to the heating pipe one (32) and the heating pipe two (33) via the heating ports. The upper end of the die head device (3) is provided with a feed port. The feed pipe (27) is inserted into the die head device (3) through the feed port.

Images