A net-laying machine lower conveyor curtain mechanism

Abstract

The utility model provides a kind of net-laying machine lower conveying curtain mechanism, including middle lifting frame, left support frame, right support frame, first lifting drive component, second lifting drive component and conveying curtain component, left support frame and right support frame are respectively corresponding to the left and right sides of middle lifting frame, middle lifting frame includes X-axis crossbeam, first Y-axis crossbeam and second Y-axis crossbeam, first Y-axis crossbeam and second Y-axis crossbeam are respectively fixed in the left and right ends of X-axis crossbeam, first lifting drive component includes telescopic drive component, first X-axis guide pulley, second X-axis guide pulley, third X-axis guide pulley, Y-axis guide pulley, Z-axis guide pulley, first steel cable and second steel cable, the advantage of the design is that: the strength of steel cable is enough big, can long time lift conveying curtain component, and its control precision is high, can make the interval between net-laying mouth and conveying curtain component as small as possible, improve net-laying precision, reduce net-laying waste material, to reduce net-laying cost.

Description

Technical Field

[0001] This utility model relates to the field of nonwoven fabric production technology, and in particular to a conveyor curtain mechanism for a web laying machine. Background Technology

[0002] Nonwoven fabrics are fabrics formed without spinning or weaving. They are created by orienting or randomly arranging short or long textile fibers to form a web structure, which is then reinforced using mechanical, thermal, or chemical methods. They are novel fiber products with a soft, breathable, and planar structure, formed directly from polymer chips, short fibers, or filaments through various web-forming methods and bonding techniques. Nonwoven fabrics have a wide range of applications, including in medical and hygiene textiles, where they are commonly used to make surgical gowns, protective clothing, sterilization wraps, masks, diapers, and sanitary napkins.

[0003] In the production of sanitary napkins, after the fiber cotton material is opened and formed into a single layer of cotton web, it needs to be laid into a multi-layer structure in a web-laying machine. The web-laying curtain of the web-laying machine reciprocates from left to right on the lower conveyor curtain, which drives the cotton web forward, thus continuously laying and conveying the cotton web. However, existing web-laying machines have a large distance between the web-laying curtain and the lower conveyor curtain. During the process of the web-laying curtain laying one layer and moving in the reverse direction, the suspended length of the cotton web between the web-laying curtain and the lower conveyor curtain is relatively large. This results in low laying accuracy of the left and right edges of the multi-layered cotton web, requiring the later trimming of the wider edges of the cotton web, which increases manufacturing costs. Therefore, a lifting mechanism is needed to drive the lower conveyor curtain as close as possible to the web-laying curtain. If a drive belt is used to drive the lower conveyor curtain, the overall weight of the lower conveyor curtain is large, and the strength of the drive belt is insufficient, making it prone to breakage. If a combination of sprockets and chains is used to drive the lower conveyor curtain, the control accuracy is not high due to the large spacing between the sprocket teeth. Therefore, it is necessary to develop a lower conveyor curtain mechanism for a net-laying machine to solve the above-mentioned problems. Utility Model Content

[0004] The purpose of this invention is to provide a lower conveyor curtain mechanism for a net-laying machine to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A conveying curtain mechanism for a net-laying machine includes a central lifting frame, a left support frame, a right support frame, a first lifting drive assembly, a second lifting drive assembly, and a conveying curtain assembly. The left and right support frames correspond to the left and right sides of the central lifting frame, respectively. The central lifting frame includes an X-axis crossbeam, a first Y-axis crossbeam, and a second Y-axis crossbeam. The first and second Y-axis crossbeams are fixed to the left and right ends of the X-axis crossbeam, respectively. The first lifting drive assembly includes a telescopic drive assembly, a first X-axis guide wheel, a second X-axis guide wheel, a third X-axis guide wheel, a Y-axis guide wheel, a Z-axis guide wheel, a first steel cable, and a second steel cable. The rear end of the telescopic drive assembly is hinged to the second Y-axis crossbeam. The first, second, and third X-axis guide wheels all rotate around the X-axis, the Y-axis guide wheel rotates around the Y-axis, and the Z-axis guide wheel rotates around the Z-axis. The first X-axis guide wheel is rotatably mounted on the second Y-axis crossbeam and corresponds to the telescopic drive assembly. On the front side of the moving assembly, the second X-axis guide wheel is rotatably mounted on the right support frame and corresponds to the top of the first X-axis guide wheel. The Y-axis guide wheel and the Z-axis guide wheel are rotatably mounted on the front end of the first Y-axis crossbeam and the front end of the second Y-axis crossbeam, respectively. The third X-axis guide wheel is rotatably mounted on the left support frame and corresponds to the top of the Y-axis guide wheel. The rear ends of the first steel cable and the rear ends of the second steel cable are both fixed to the power output end of the telescopic drive assembly. The front end of the second steel cable is sequentially wound around the lower side of the first X-axis guide wheel and the upper side of the second X-axis guide wheel before being fixed to the right support frame. The front end of the first steel cable is sequentially wound around the front side of the Z-axis guide wheel, the lower side of the Y-axis guide wheel, and the upper side of the third X-axis guide wheel before being fixed to the left support frame. The structure of the second lifting drive assembly is symmetrical to the structure of the first lifting drive assembly about the center of the middle lifting frame. The conveyor curtain assembly is installed between the first Y-axis crossbeam and the second Y-axis crossbeam.

[0007] Further description of this utility model: A first fixing device for fixing the front end of the first steel cable is provided on the left support frame, and a second fixing device for fixing the front end of the second steel cable is provided on the right support frame. The second fixing device includes a base plate, a vertical screw, a vertical adjusting plate, a sliding block, a first screw, a second screw, and a third screw. The base plate is fixed on the right support frame. The lower ends of the vertical screw and the vertical adjusting plate are both fixed on the base plate. A vertical slot is provided on the vertical adjusting plate. A first threaded rod and a second threaded rod are provided on the left and right sides of the sliding block, respectively. A through hole is provided vertically in the middle of the sliding block. The right end face of the sliding block contacts the left end face of the vertical adjusting plate. The second threaded rod passes through the slot. The first screw and the second screw are threadedly connected to the first threaded rod and the second threaded rod, respectively. The front end of the second steel cable is pressed against the left end face of the sliding block by the first screw. The second screw contacts the right end face of the vertical adjusting plate. The vertical screw passes through the through hole. The third screw is threadedly connected to the vertical screw and corresponds to the top of the sliding block. The structures of the first fixing device and the second fixing device are symmetrical.

[0008] Further description of the present invention: The conveyor curtain assembly includes a conveyor roller, an annular conveyor curtain, and a rotary motor. The left and right ends of the conveyor roller are rotatably mounted on the first Y-axis beam and the second Y-axis beam, respectively. Four sets of conveyor rollers are provided, corresponding to the front and rear sides of the upper end of the first Y-axis beam and the front sides of the lower end of the first Y-axis beam, respectively. The rotary motor is fixed on the first Y-axis beam and drivenly connected to one set of conveyor rollers. The annular conveyor curtain surrounds the outer periphery of the four sets of conveyor rollers.

[0009] Further description of the present invention: It also includes a brush mounting bracket and a cleaning brush. Two sets of brush mounting brackets are provided and fixed to the upper ends of the left support bracket and the right support bracket, respectively. The cleaning brush is fixed on the brush mounting bracket along the Y-axis.

[0010] The beneficial effects of this invention are as follows: Before laying the net, the power output end of the telescopic drive assembly is in the extended state, and the conveyor curtain assembly is in the lowered position, facilitating cleaning of the conveyor curtain assembly. When laying the net begins, the power output end of the telescopic drive assembly retracts, simultaneously pulling the rear ends of the first and second steel cables backward. The second steel cable drives the first X-axis guide wheel to rise, thereby driving the front end of the second Y-axis crossbeam to rise. After passing the Z-axis guide wheel, the first steel cable is on the left side and drives the Y-axis guide wheel to rise, thereby driving the front end of the first Y-axis crossbeam to rise. That is, the first lifting drive assembly drives the front end of the middle lifting frame to rise. Similarly, the second lifting drive assembly drives the rear end of the middle lifting frame to rise, thereby raising the conveyor curtain assembly to be as close as possible to the net laying opening in the net laying curtain. Driven by the conveyor curtain assembly, the multi-layered cotton net is continuously conveyed forward. The advantages of this design are: the steel cable has sufficient strength to lift the conveyor curtain assembly for a long time, and its control precision is high, which can minimize the gap between the net laying opening and the conveyor curtain assembly, improve net laying accuracy, reduce net laying waste, and thus reduce net laying costs. Attached Figure Description

[0011] Figure 1 This is an overall structural diagram of the present invention;

[0012] Figure 2 This is a structural diagram (right view) of the central lifting frame, the first lifting drive assembly, and the second lifting drive assembly in this utility model.

[0013] Figure 3 This is a structural diagram (left view) of the central lifting frame, the first lifting drive assembly, and the second lifting drive assembly in this utility model.

[0014] Figure 4 yes Figure 1 A magnified view of a portion of position A in the middle;

[0015] Figure 5 yes Figure 2 A magnified view of a portion of position B in the middle;

[0016] Figure 6 yes Figure 3 A magnified view of the area at position C in the middle;

[0017] Explanation of reference numerals in the attached figures:

[0018] 1. Central lifting frame; 11. X-axis crossbeam; 12. First Y-axis crossbeam; 13. Second Y-axis crossbeam; 2. Left support frame; 21. First fixing device; 3. Right support frame; 31. Second fixing device; 311. Base plate; 312. Vertical screw; 313. Vertical adjusting plate; 3131. Strip hole; 314. Sliding block; 3141. First threaded rod; 3142. Second threaded rod; 315. First screw; 316. 1. Second screw; 317. Third screw; 4. First lifting drive assembly; 41. Telescopic drive assembly; 42. First X-axis guide wheel; 43. Second X-axis guide wheel; 44. Third X-axis guide wheel; 45. Y-axis guide wheel; 46. Z-axis guide wheel; 47. First steel cable; 48. Second steel cable; 5. Second lifting drive assembly; 6. Conveyor curtain assembly; 61. Conveyor roller; 62. Circular conveyor curtain; 7. Brush mounting bracket; 8. Cleaning brush. Detailed Implementation

[0019] The present invention will be further described below with reference to the accompanying drawings:

[0020] like Figures 1 to 6As shown, a conveying curtain mechanism for a net-laying machine includes a central lifting frame 1, a left support frame 2, a right support frame 3, a first lifting drive assembly 4, a second lifting drive assembly 5, and a conveying curtain assembly 6. The left support frame 2 and the right support frame 3 correspond to the left and right sides of the central lifting frame 1, respectively. The central lifting frame 1 includes an X-axis crossbeam 11, a first Y-axis crossbeam 12, and a second Y-axis crossbeam 13. The first Y-axis crossbeam 12 and the second Y-axis crossbeam 13 are respectively fixed to the left and right ends of the X-axis crossbeam 11. The first lifting drive assembly 4 includes... The telescopic drive assembly 41 includes a first X-axis guide wheel 42, a second X-axis guide wheel 43, a third X-axis guide wheel 44, a Y-axis guide wheel 45, a Z-axis guide wheel 46, a first steel cable 47, and a second steel cable 48. The rear end of the telescopic drive assembly 41 is hinged to the second Y-axis crossbeam 13. The first X-axis guide wheel 42, the second X-axis guide wheel 43, and the third X-axis guide wheel 44 all rotate around the X-axis, the Y-axis guide wheel 45 rotates around the Y-axis, and the Z-axis guide wheel 46 rotates around the Z-axis. The first X-axis guide wheel 42 is rotatably mounted on the second Y-axis crossbeam 13 and is rotatable from the second Y-axis crossbeam 13. Located on the front side of the telescopic drive assembly 41, the second X-axis guide wheel 43 is rotatably mounted on the right support frame 3 and above the first X-axis guide wheel 42. The Y-axis guide wheel 45 and the Z-axis guide wheel 46 are rotatably mounted on the front ends of the first Y-axis crossbeam 12 and the second Y-axis crossbeam 13, respectively. The third X-axis guide wheel 44 is rotatably mounted on the left support frame 2 and above the Y-axis guide wheel 45. The rear ends of the first steel cable 47 and the second steel cable 48 are both fixed to the power output end of the telescopic drive assembly 41. The front end of the second steel cable 48 is sequentially wound around the lower side of the first X-axis guide wheel 42 and the upper side of the second X-axis guide wheel 43, and then fixed on the right support frame 3. The front end of the first steel cable 47 is sequentially wound around the front side of the Z-axis guide wheel 46, the lower side of the Y-axis guide wheel 45, and the upper side of the third X-axis guide wheel 44, and then fixed on the left support frame 2. The structure of the second lifting drive assembly 5 is symmetrical to the structure of the first lifting drive assembly 4 about the center of the middle lifting frame 1. The conveyor curtain assembly 6 is installed between the first Y-axis crossbeam 12 and the second Y-axis crossbeam 13.

[0021] Before laying the net, the power output end of the telescopic drive assembly 41 is in the extended state, and the conveyor curtain assembly 6 is in the lowered position, which facilitates cleaning of the conveyor curtain assembly 6. When laying the net begins, the power output end of the telescopic drive assembly 41 retracts, pulling the rear ends of the first steel cable 47 and the second steel cable 48 backward simultaneously. The second steel cable 48 drives the first X-axis guide wheel 42 to rise, thereby driving the front end of the second Y-axis crossbeam 13 to rise. After passing the Z-axis guide wheel 46, the first steel cable 47 is on the left side and drives the Y-axis guide wheel 45 to rise, thereby driving the front end of the first Y-axis crossbeam 12 to rise. That is, the first lifting drive assembly 4 drives the front end of the middle lifting frame 1 to rise. Similarly, the second lifting drive assembly 5 drives the rear end of the middle lifting frame 1 to rise, thereby raising the conveyor curtain assembly 6 to be as close as possible to the net laying opening in the net laying curtain. Under the drive of the conveyor curtain assembly 6, the multi-layered cotton net is continuously conveyed forward. The advantages of this design are: the steel cable has sufficient strength to lift the conveyor curtain assembly 6 for a long time, and its control precision is high, which can minimize the gap between the net laying opening and the conveyor curtain assembly 6, improve the net laying accuracy, reduce net laying waste, and thus reduce net laying cost.

[0022] The left support frame 2 is equipped with a first fixing device 21 for fixing the front end of the first steel cable 47, and the right support frame 3 is equipped with a second fixing device 31 for fixing the front end of the second steel cable 48. The second fixing device 31 includes a base plate 311, a vertical screw 312, a vertical adjusting plate 313, a sliding block 314, a first screw 315, a second screw 316, and a third screw 317. The base plate 311 is fixed to the right support frame 3. The lower ends of the vertical screw 312 and the vertical adjusting plate 313 are both fixed to the base plate 311. The vertical adjusting plate 313 has a vertically arranged strip hole 3131. The left and right sides of the sliding block 314 are respectively provided with a first threaded rod 3141 and a second threaded rod 3142. The sliding block 314 has a vertical through hole in the middle. The right end face of the sliding block 314 contacts the left end face of the vertical adjustment plate 313. The second threaded rod 3142 passes through the strip hole 3131. The first screw 315 and the second screw 316 are threadedly connected to the first threaded rod 3141 and the second threaded rod 3142, respectively. The front end of the second steel cable 48 is pressed against the left end face of the sliding block 314 by the first screw 315. The second screw 316 contacts the right end face of the vertical adjustment plate 313. The vertical screw 312 passes through the through hole. The third screw 317 is threadedly connected to the vertical screw 312 and corresponds to the top of the sliding block 314. The structures of the first fixing device 21 and the second fixing device 31 are symmetrical from left to right.

[0023] The front end of the second steel cable 48 is fixed to the second fixing device 31. Specifically, the front end of the second steel cable 48 is pressed against the left end face of the sliding block 314 by the first screw 315. The third screw 317 limits the position of the sliding block 314 on the vertical screw 312 and locks the sliding block 314 on the vertical adjusting plate 313 by the second screw 316, thereby further fixing the sliding block 314. When it is necessary to make a fine adjustment to the height of the front end of the second steel cable 48, first loosen the second screw 316 with a tool, then rotate the third screw 317 to move the third screw 317 up or down, thereby making a fine adjustment to the position of the sliding block 314. After the adjustment is completed, tighten the second screw 316.

[0024] The conveyor curtain assembly 6 includes a conveyor roller 61, an annular conveyor curtain 62, and a rotary motor. The left and right ends of the conveyor roller 61 are rotatably mounted on the first Y-axis beam 12 and the second Y-axis beam 13, respectively. Four sets of conveyor rollers 61 are provided, corresponding to the front and rear sides of the upper end of the first Y-axis beam 12 and the front sides of the lower end of the first Y-axis beam 12, respectively. The rotary motor is fixed on the first Y-axis beam 12 and is drivenly connected to one set of conveyor rollers 61. The annular conveyor curtain 62 surrounds the outer periphery of the four sets of conveyor rollers 61.

[0025] A rotary motor drives one set of conveyor rollers 61 to rotate, and through an annular conveyor curtain 62, causes the other conveyor rollers 61 to rotate passively. The annular conveyor curtain 62 conveys the cotton web forward.

[0026] This design also includes a brush mounting bracket 7 and a cleaning brush 8. Two sets of brush mounting brackets 7 are provided and fixed to the upper end of the left support bracket 2 and the upper end of the right support bracket 3, respectively. The cleaning brush 8 is fixed on the brush mounting bracket 7 along the Y-axis.

[0027] After the conveyor curtain assembly 6 rises, the brush contacts the bottom of the netting curtain. During the netting process, the brush blocks foreign objects at the bottom of the netting curtain from entering the cotton net.

[0028] The above does not limit the technical scope of this utility model. Any modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of this utility model shall still fall within the scope of the technical solution of this utility model.

Claims

1. A conveyor curtain mechanism for a net-laying machine, characterized in that: The system includes a central lifting frame, a left support frame, a right support frame, a first lifting drive assembly, a second lifting drive assembly, and a conveyor curtain assembly. The left and right support frames correspond to the left and right sides of the central lifting frame, respectively. The central lifting frame includes an X-axis crossbeam, a first Y-axis crossbeam, and a second Y-axis crossbeam, which are fixed to the left and right ends of the X-axis crossbeam, respectively. The first lifting drive assembly includes a telescopic drive assembly, a first X-axis guide wheel, a second X-axis guide wheel, a third X-axis guide wheel, a Y-axis guide wheel, a Z-axis guide wheel, a first steel cable, and a second steel cable. The rear end of the telescopic drive assembly is hinged to the second Y-axis crossbeam. The first, second, and third X-axis guide wheels all rotate around the X-axis, the Y-axis guide wheel rotates around the Y-axis, and the Z-axis guide wheel rotates around the Z-axis. The first X-axis guide wheel is rotatably mounted on the second Y-axis crossbeam and corresponds to the front side of the telescopic drive assembly. The second X-axis guide wheel can... The first X-axis guide wheel is rotatably mounted on the right support frame and above the first X-axis guide wheel. The Y-axis guide wheel and the Z-axis guide wheel are rotatably mounted on the front end of the first Y-axis crossbeam and the front end of the second Y-axis crossbeam, respectively. The third X-axis guide wheel is rotatably mounted on the left support frame and above the Y-axis guide wheel. The rear ends of the first steel cable and the second steel cable are both fixed to the power output end of the telescopic drive assembly. The front end of the second steel cable is sequentially wound around the lower side of the first X-axis guide wheel and the upper side of the second X-axis guide wheel and then fixed to the right support frame. The front end of the first steel cable is sequentially wound around the front side of the Z-axis guide wheel, the lower side of the Y-axis guide wheel, and the upper side of the third X-axis guide wheel and then fixed to the left support frame. The structure of the second lifting drive assembly is symmetrical to the structure of the first lifting drive assembly about the center of the central lifting frame. The conveyor curtain assembly is installed between the first Y-axis crossbeam and the second Y-axis crossbeam.

2. The lower conveyor curtain mechanism of a net-laying machine according to claim 1, characterized in that: The left support frame is provided with a first fixing device for fixing the front end of the first steel cable, and the right support frame is provided with a second fixing device for fixing the front end of the second steel cable. The second fixing device includes a base plate, a vertical screw, a vertical adjusting plate, a sliding block, a first screw, a second screw, and a third screw. The base plate is fixed to the right support frame. The lower ends of the vertical screw and the vertical adjusting plate are both fixed to the base plate. The vertical adjusting plate has a vertically arranged strip hole. The left and right sides of the sliding block are respectively provided with a first threaded rod and a second threaded rod. The middle of the sliding block has a vertically arranged... The sliding block has a through hole, the right end face of which contacts the left end face of the vertical adjustment plate. The second threaded rod passes through the strip hole. The first screw and the second screw are threadedly connected to the first threaded rod and the second threaded rod, respectively. The front end of the second steel cable is pressed against the left end face of the sliding block by the first screw. The second screw contacts the right end face of the vertical adjustment plate. The vertical screw passes through the through hole. The third screw is threadedly connected to the vertical screw and corresponds to the top of the sliding block. The structures of the first fixing device and the second fixing device are symmetrical from left to right.

3. The lower conveyor curtain mechanism of a net-laying machine according to claim 1, characterized in that: The conveyor curtain assembly includes conveyor rollers, an annular conveyor curtain, and a rotary motor. The left and right ends of the conveyor rollers are rotatably mounted on the first Y-axis beam and the second Y-axis beam, respectively. Four sets of conveyor rollers are provided, corresponding to the front and rear sides of the upper end of the first Y-axis beam and the front sides of the lower end of the first Y-axis beam, respectively. The rotary motor is fixed on the first Y-axis beam and is drivenly connected to one set of the conveyor rollers. The annular conveyor curtain surrounds the outer periphery of the four sets of conveyor rollers.

4. The lower conveyor curtain mechanism of a net-laying machine according to claim 1, characterized in that: It also includes a brush mounting bracket and a cleaning brush. The brush mounting bracket is provided in two sets and is fixed to the upper end of the left support frame and the upper end of the right support frame respectively. The cleaning brush is fixed on the brush mounting bracket along the Y-axis.

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