Tension compensation mechanism for nonwoven fabric production

Abstract

The application provides a kind of non-woven fabric production tension compensation mechanism, including rack, installation on the feed roller and discharge roller of rack, the axis of feed roller and the axis of discharge roller are parallelly arranged, tension compensation roller group, tension compensation roller group is installed between feed roller and discharge roller;Non-woven fabric is sequentially passed through feed roller, tension compensation roller group and discharge roller;Driving mechanism, driving mechanism is installed on the rack to drive tension compensation roller group to lift;It also includes pressure sensor and controller, pressure sensor is installed on tension compensation roller group to detect the tension of non-woven fabric, pressure sensor, driving mechanism is electrically connected with controller, tension compensation assembly is lifted by driving mechanism, compared with the transverse movement of traditional tensioning roller, the floor area of equipment can be reduced, the production space is maximized, and the utilization rate of space is improved.

Description

Technical Field

[0001] This application relates to the field of nonwoven fabric production technology, and in particular to a tension compensation mechanism for nonwoven fabric production. Background Technology

[0002] In the nonwoven fabric manufacturing industry, tension control is one of the key factors to ensure product quality, production efficiency and equipment life. In the process of nonwoven fabric production, uneven tension or excessive fluctuations often lead to problems such as displacement, wrinkles and breakage of nonwoven fabric during transportation, which seriously affects the quality of the product.

[0003] The existing utility model patent with authorization announcement number CN219949991U discloses a structure including a guide roller, tension roller, slider, electric push rod, pressure sensor, and spring. It utilizes a pressure sensor to detect the pressure value between the electric push rod and the spring to determine the tension of the nonwoven fabric. Then, a controller controls the movement of the electric push rod to keep the pressure detected by the pressure sensor within a set range, thus achieving automatic adjustment of the nonwoven fabric tension. In the aforementioned disclosure, the slider is installed in grooves on the left and right sides of the frame. Since there are two electric push rods, each connected to the slider on its corresponding side to push the tension roller to slide laterally. In actual operation, controlling the tension of the nonwoven fabric by the left and right sliding of the tension roller results in a large footprint, occupying a significant amount of production space. Furthermore, if the two electric push rods do not respond simultaneously, or if the tension roller becomes skewed, differences in tension at the same cross-section of the nonwoven fabric will occur, affecting the production effect.

[0004] Therefore, how to design a tension compensation mechanism that reduces the footprint and improves the accuracy of tension compensation has become a technical problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0005] This application provides a tension compensation mechanism for nonwoven fabric production, which at least solves the above-mentioned technical problems existing in the prior art.

[0006] A tension compensation mechanism for nonwoven fabric production is provided, including a frame, a feed roller and a discharge roller mounted on the frame, the axis of the feed roller and the axis of the discharge roller being arranged parallel to each other, and a tension compensation roller group being installed between the feed roller and the discharge roller. The nonwoven fabric passes sequentially around the feed roller, the tension compensation roller group, and the discharge roller; The drive mechanism is mounted on the frame and is used to drive the tension compensation roller group to rise and fall. It also includes a pressure sensor and a controller. The pressure sensor is installed on the tension compensation roller assembly to detect the tension of the nonwoven fabric. The pressure sensor and the drive mechanism are both electrically connected to the controller.

[0007] In one embodiment, the tension compensation roller assembly includes a guide roller and a lifting roller. The guide roller is rotatably mounted on the frame, and the lifting roller is located below the guide roller and is powered by the drive mechanism. The nonwoven fabric passes sequentially around the feed roller, the lifting roller, the guide roller, and the discharge roller.

[0008] In one embodiment, both the guide roller and the lifting roller are provided with two rollers, and the non-woven fabric passes through the lifting roller and the guide roller alternately.

[0009] In one embodiment, the tension compensation roller assembly further includes a lifting plate and a connecting seat. The connecting seat is fixedly mounted on the lifting plate. Both ends of the lifting roller abut against the connecting seat through bearings. The detection end of the pressure sensor abuts against the peripheral wall of the bearing. The lifting plate is connected to the drive mechanism through a transmission assembly.

[0010] In one embodiment, the system further includes a positioning seat, a positioning seat cover, and a mounting groove formed on the connecting seat for placing the bearing. The mounting groove has a gap with the bearing peripheral wall to allow the bearing to move upward. The pressure sensor is mounted on the positioning seat.

[0011] In one embodiment, the positioning seat is provided with a placement hole, the bottom wall of which is connected to the mounting groove for the detection end of the pressure sensor to be inserted and extend into the mounting groove, and also includes a sealing plate to seal the placement hole.

[0012] In one embodiment, the transmission assembly includes a lead screw and a bevel gear set. The lead screw is arranged longitudinally and is threadedly connected to the lifting plate. One bevel gear of the bevel gear set is connected to the lead screw, and the other bevel gear of the bevel gear set is connected to the drive mechanism.

[0013] In one embodiment, the frame is provided with a longitudinally arranged slide groove, the lifting plate is provided with a slider, the slider extends out of the frame through the slide groove, the side wall of the slider is slidably connected to the inner wall of the slide groove, and the lead screw is threadedly connected to the slider.

[0014] In one embodiment, two sets of lead screws and bevel gears are provided and located on both sides of the lifting plate, and the drive mechanism drives the two lead screws to rotate synchronously.

[0015] In one embodiment, the drive mechanism includes a drive shaft, a motor, a worm gear, and a worm. The motor is fixedly mounted on the frame, the output shaft of the motor is connected to the worm, the worm and the worm wheel mesh with each other, the drive shaft is rotatably connected to the frame, the worm wheel is fixedly mounted on the drive shaft, and the output end of the drive shaft is connected to a bevel gear set.

[0016] Compared with the prior art, the tension compensation mechanism for nonwoven fabric production disclosed in this application has the following advantages: A pressure sensor is used to detect the tension between the nonwoven fabric and the tension roller assembly. The tension value of the nonwoven fabric is then transmitted to the controller, which sends an action signal to the drive mechanism to adjust the position of the tension compensation roller assembly, so that the tension of the nonwoven fabric is maintained within the set range, thereby improving the accuracy of nonwoven fabric tension control. The tension compensation assembly is raised and lowered by the drive mechanism. Compared with the traditional lateral movement of the tension roller, this reduces the footprint of the equipment, maximizes the use of production space, and improves space utilization.

[0017] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of this application, nor is it intended to limit the scope of this application. Other features of this application will become readily apparent from the following description. Attached Figure Description

[0018] The above and other objects, features, and advantages of exemplary embodiments of this application will become readily apparent from the following detailed description taken in conjunction with the accompanying drawings. Several embodiments of this application are illustrated in the drawings by way of example and not limitation, in which: In the accompanying drawings, the same or corresponding reference numerals indicate the same or corresponding parts.

[0019] Figure 1 A schematic diagram of the overall structure of this application is shown; Figure 2 A first angular sectional view of this application is shown; Figure 3 A second sectional view of this application is shown; Figure 4 A partial unfolded schematic diagram of this application is shown; Figure 5 A partial sectional view of this application is shown.

[0020] Explanation of the labels in the diagram: 1. Frame; 10. Groove; 2. Feed roller; 3. Discharge roller; 4. Tension compensation roller assembly; 41. Guide roller; 42. Lifting roller; 43. Lifting plate; 431. Connecting seat; 432. Positioning seat; 4321. Placement hole; 433. Mounting slot; 434. Sealing plate; 435. Sliding block; 5. Drive mechanism; 51. Transmission shaft; 52. Motor; 53. Worm gear; 54. Worm; 6. Pressure sensor; 7. Controller; 8. Transmission components; 81. Lead screw; 82. Bevel gear set. Detailed Implementation

[0021] To make the objectives, features, and advantages of this application more apparent and understandable, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0022] The machine includes a frame 1, which can be composed of two sets of upright plates arranged front and rear. It also includes a feed roller 2, a discharge roller 3, and a tension compensation roller group 4. The feed roller 2 and the discharge roller 3 are installed between the two upright plates of the frame 1, and their axes are parallel to each other. Specifically, the tension compensation roller group 4 is installed between the feed roller 2 and the discharge roller 3. The feed roller 2 is used to feed the nonwoven fabric to the tension compensation roller group 4. After the tension of the nonwoven fabric is adjusted by the tension compensation roller group 4, it flows to the discharge roller 3. Finally, the nonwoven fabric flows from the discharge roller 3 to the next process.

[0023] Traditional nonwoven fabric tension adjustment can be referenced in the public document CN219949991U mentioned in the background art. In this document, the discharge roller 3 and the tension compensation roller group 4 are not on the same horizontal plane. The tension of the nonwoven fabric is adjusted by moving the position of the tension compensation roller group 4 by an electric push rod. This method of adjusting the tension of nonwoven fabric results in a large footprint of the equipment because the tension compensation roller group 4 slides laterally, and it cannot maximize the efficiency of site utilization.

[0024] Another method for adjusting the tension of nonwoven fabric involves feeding roller 2 and discharging roller 3 on the same horizontal plane, with tension compensation roller group 4 positioned between them. By raising and lowering tension compensation roller group 4, the nonwoven fabric is pushed forward, thus adjusting its tension. To minimize the footprint, this method minimizes the distance between the projections of feeding roller 2 and discharging roller 3 on the horizontal plane. When the tension of the nonwoven fabric changes, the short distance between the feeding roller 2 and discharging roller 3 results in a short allowance for tension compensation roller group 4 to adjust the tension, which can affect worker operations.

[0025] This technical solution mainly addresses the shortcomings of traditional nonwoven fabric tension adjustment.

[0026] Specifically, such as Figure 1 and Figure 2 As shown, it also includes a drive mechanism 5 for driving the tension compensation roller group 4 to rise and fall. The nonwoven fabric passes by the feed roller 2, the tension compensation roller group 4 and the discharge roller 3 in sequence. In this embodiment, the discharge roller 3 and the feed roller 2 are not on the same horizontal plane. The tension compensation roller group 4 is driven to rise and fall by the drive mechanism 5, so that the tension of the nonwoven fabric can be adjusted.

[0027] To allow sufficient reaction time for the operation of tension compensation roller group 4, in this embodiment, as follows: Figure 2 As shown, the tension compensation roller group 4 includes a guide roller 41, a lifting roller 42, and a lifting plate 43. The guide roller 41 is rotatably mounted on the frame 1. Specifically, the guide roller 41 and the feed roller 2 are on the same horizontal plane, and the discharge roller 3 is located below the feed roller 2. Here, "below" refers to the ground, not directly below. The lifting roller 42 is mounted on the lifting plate 43, which is powered by the drive mechanism 5 so that the lifting plate 43 can be raised and lowered along the longitudinal direction, which is the height direction of the equipment.

[0028] Among them, such as Figure 2 As shown, the nonwoven fabric enters from the feed roller 2, then passes through the lifting roller 42 and the guide roller 41 in sequence, and is finally output from the discharge roller 3. When the nonwoven fabric is wound in the tension compensation roller group 4, the cross section forms at least one V-shaped structure, which increases the length of the nonwoven fabric between the feed roller 2 and the discharge roller 3, providing sufficient time for the response of the tension compensation roller group 4.

[0029] Specifically, in this embodiment, such as Figure 2 and Figure 3 As shown, there are two guide rollers 41 and two lifting rollers 42. The nonwoven fabric passes through the lifting rollers 42 and guide rollers 41 alternately, and is finally output from the discharge roller 3. A certain length of nonwoven fabric can be stored at the tension compensation roller group 4.

[0030] In this embodiment, as Figure 1 and Figure 3 As shown, the frame 1 is provided with a longitudinally arranged slide groove 10, and a slider 435 is fixedly provided on the lifting plate 43. The slider 435 extends through the slide groove 10 to the outside of the frame 1. Specifically, the side wall of the slider 435 is slidably connected to the inner wall of the slide groove 10, thereby improving the stability of the lifting plate 43 during the lifting process. It also includes a transmission assembly 8. One end of the transmission assembly 8 is connected to the drive mechanism 5 to receive power, and the other end of the transmission assembly 8 is connected to the lifting plate 43 to drive the lifting plate 43 to rise or fall.

[0031] Specifically, such as Figure 3 As shown, the transmission assembly 8 includes a lead screw 81 and a bevel gear set 82. The lead screw 81 is arranged along the longitudinal direction of the device, and the thread on the lead screw 81 is threadedly connected to the slider 435. The bevel gear set 82 is arranged between the transmission assembly 8 and the drive mechanism 5 to transmit the power of the drive mechanism 5 to the transmission assembly 8, thereby realizing the rotation of the lead screw 81.

[0032] In this embodiment, as Figure 3As shown, the transmission assembly 8 is provided in two sets and is located on both sides of the lifting plate 43 respectively. The drive mechanism 5 simultaneously drives the lead screw 81 in the transmission assembly 8 to rotate, applying power to both ends of the lifting plate 43 at the same time, so as to realize the stable lifting of the lifting plate 43 and reduce the risk of tilting during the lifting process.

[0033] Specifically, such as Figure 2 and Figure 3 As shown, the drive mechanism 5 includes a drive shaft 51, a motor 52, a worm gear 53, and a worm 54. The drive shaft 51 is rotatably mounted on the frame 1, and its output end is connected to one of the bevel gears in the bevel gear set 82. The worm gear 53 is fixedly mounted on the drive shaft 51, and the worm 54 meshes with the worm gear 53. The motor 52 is fixedly mounted on the frame 1, and its output end is connected to the worm 54. It is worth noting that the motor 52 is a servo motor, which can realize the forward or reverse rotation of the drive shaft 51 through the worm 54 and the worm gear 53, thereby controlling the lifting of the lifting plate 43.

[0034] The solution of using the drive mechanism 5 to simultaneously drive the lead screw 81 to rotate and realize the lifting of the lifting plate 43 has the advantages of low cost and stable lifting.

[0035] Specifically, in traditional tension roller movement, the slider is moved by an electric pusher, which in turn pushes the tension roller to move. Normally, there is one electric pusher located on one side of the tension roller. Although the use of one electric pusher reduces costs, the electric pusher is only connected to the slider on one side of the tension roller to provide power, while the other end of the tension roller is directly connected to the frame 1. In this case, the tension roller is prone to tilting during the pushing process of one electric pusher, which can cause uneven tension of the nonwoven fabric and risks such as wrinkles.

[0036] If electric push rods are installed at both ends of the tension roller, the production cost will be too high. Moreover, it is difficult to achieve synchronous movement of the electric push rods on both sides.

[0037] In this solution, a drive mechanism 5 formed by a motor 52, a worm gear 53, and a worm 54 is used to provide power to the lifting plate 43 through a transmission assembly 8. By using a purely mechanical structure, the stable operation of the lifting plate 43 can be guaranteed, while reducing the risk of errors.

[0038] In this embodiment, as Figure 3 As shown, the drive mechanism 5 is located below the lifting plate 43. The setting of the drive mechanism 5 will not affect the lifting of the lifting plate 43, and makes reasonable use of the space inside the frame 1.

[0039] In order to detect the tension of nonwoven fabric, in this embodiment, as follows: Figure 4 and Figure 5As shown, a connecting seat 431 is fixedly connected to the lifting plate 43 by bolts. The lifting roller 42 is rotatably connected to the connecting seat 431 through a bearing. It also includes a pressure sensor 6, which is located above the bearing. The detection of the pressure sensor 6 is abutted against the peripheral wall of the bearing. When the nonwoven fabric passes over the lifting roller 42, the lifting roller 42 is located at the tip of the V-shaped structure formed by the nonwoven fabric. At this time, the nonwoven fabric has a tendency to lift the lifting roller 42 upward, thereby driving the bearing to move upward. The peripheral wall of the bearing applies pressure to the detection end of the pressure sensor 6, thereby completing the tension detection of the nonwoven fabric.

[0040] It also includes a controller 7, in which the pressure sensor 6 and the motor 52 are electrically connected to the controller 7. The controller 7 can set the tension value of the nonwoven fabric through the control panel, thereby forming a threshold range within the controller 7. The pressure sensor 6 transmits the detected pressure signal to the controller 7. The controller 7 processes the signal. When the pressure exceeds the set threshold range, the controller 7 sends an electrical signal to the motor 52, thereby controlling the operation of the motor 52 and adjusting the tension of the nonwoven fabric by adjusting the position of the lifting plate 43.

[0041] In this embodiment, when the tension is too high, the motor 52 raises the lifting plate 43 through the transmission assembly 8. At this time, the non-woven fabric wrapped around the outside of the lifting roller 42 relaxes, which can reduce the tension of the non-woven fabric. When the tension is too low, the motor 52 lowers the lifting plate 43 through the transmission assembly 8, and pulls the non-woven fabric down through the lifting roller 42. At this time, the tension of the non-woven fabric will increase. When the pressure signal detected by the pressure sensor 6 is within the threshold range set by the controller 7, the motor 52 stops operating.

[0042] To achieve the installation of pressure sensor 6, in this embodiment, as follows: Figure 4 and Figure 5 As shown, it also includes a positioning seat 432, wherein the positioning seat 432 covers the connecting seat 431, and a mounting groove 433 for bearing installation is formed between the positioning seat 432 and the connecting seat 431. After the bearing is installed inside the mounting groove 433, a gap is reserved between the bearing and the mounting groove 433 for the bearing to move upward, so that the bearing can squeeze the detection end of the pressure sensor 6, which facilitates the measurement of tension.

[0043] The positioning base 432 is provided with a placement hole 4321. The bottom wall of the placement hole 4321 is connected to the mounting groove 433 to allow the detection end of the pressure sensor 6 to extend to the mounting groove 433. It also includes a sealing plate 434, which is located on the upper wall of the positioning base 432 and encapsulates the pressure sensor 6 in the placement hole 4321.

[0044] It should be understood that the various forms of processes shown above can be used to rearrange, add, or delete steps. For example, the steps described in this disclosure can be executed in parallel, sequentially, or in different orders, as long as the desired result of the technical solution disclosed in this application can be achieved, and this is not limited herein.

[0045] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0046] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A tension compensation mechanism for nonwoven fabric production, comprising a frame (1), a feed roller (2) and a discharge roller (3) mounted on the frame (1), wherein the axis of the feed roller (2) is arranged parallel to the axis of the discharge roller (3), characterized in that, Tension compensation roller group (4) is installed between feed roller (2) and discharge roller (3); The nonwoven fabric passes sequentially around the feed roller (2), the tension compensation roller group (4), and the discharge roller (3); Drive mechanism (5), which is mounted on frame (1) to drive tension compensation roller group (4) to rise and fall; It also includes a pressure sensor (6) and a controller (7). The pressure sensor (6) is installed on the tension compensation roller group (4) to detect the tension of the nonwoven fabric. The pressure sensor (6) and the drive mechanism (5) are electrically connected to the controller (7).

2. The tension compensation mechanism for nonwoven fabric production according to claim 1, characterized in that, The tension compensation roller group (4) includes a guide roller (41) and a lifting roller (42). The guide roller (41) is rotatably mounted on the frame (1). The lifting roller (42) is located below the guide roller (41) and is powered by the drive mechanism (5). The nonwoven fabric passes through the feed roller (2), the lifting roller (42), the guide roller (41), and the discharge roller (3) in sequence.

3. The tension compensation mechanism for nonwoven fabric production according to claim 2, characterized in that, Two guide rollers (41) and two lifting rollers (42) are provided, and non-woven fabric passes through the lifting roller (42) and the guide roller (41) in an alternating manner.

4. The tension compensation mechanism for nonwoven fabric production according to claim 2, characterized in that, The tension compensation roller assembly (4) also includes a lifting plate (43) and a connecting seat (431). The connecting seat (431) is fixedly mounted on the lifting plate (43). The two ends of the lifting roller (42) abut against the connecting seat (431) through bearings. The detection end of the pressure sensor (6) abuts against the peripheral wall of the bearing. The lifting plate (43) is connected to the drive mechanism (5) through the transmission assembly (8).

5. The tension compensation mechanism for nonwoven fabric production according to claim 4, characterized in that, It also includes a positioning seat (432), a cover for the positioning seat (432), and a mounting groove (433) formed on the connecting seat (431) for placing the bearing. The mounting groove (433) and the bearing peripheral wall have a gap for the bearing to move upward. The pressure sensor (6) is mounted on the positioning seat (432).

6. The tension compensation mechanism for nonwoven fabric production according to claim 5, characterized in that, The positioning base (432) is provided with a placement hole (4321), the bottom wall of the placement hole (4321) is connected to the mounting groove (433) to allow the detection end of the pressure sensor (6) to be inserted and extended into the mounting groove (433), and also includes a sealing plate (434) to seal the placement hole (4321).

7. A tension compensation mechanism for nonwoven fabric production according to claim 3, characterized in that, The transmission assembly (8) includes a lead screw (81) and a bevel gear set (82). The lead screw (81) is arranged longitudinally and is threadedly connected to the lifting plate (43). One bevel gear of the bevel gear set (82) is connected to the lead screw (81), and the other bevel gear of the bevel gear set (82) is connected to the drive mechanism (5).

8. A tension compensation mechanism for nonwoven fabric production according to claim 7, characterized in that, The frame (1) is provided with a slide groove (10) arranged along the longitudinal direction, and the lifting plate (43) is provided with a slider (435). The slider (435) extends out of the frame (1) through the slide groove (10). The side wall of the slider (435) is slidably connected to the inner wall of the slide groove (10), and the lead screw (81) is threadedly connected to the slider (435).

9. A tension compensation mechanism for nonwoven fabric production according to claim 7, characterized in that, Two sets of lead screws (81) and bevel gear sets (82) are provided and located on both sides of the lifting plate (43). The drive mechanism (5) drives the two lead screws (81) to rotate synchronously.

10. A tension compensation mechanism for nonwoven fabric production according to claim 7, characterized in that, The drive mechanism (5) includes a drive shaft (51), a motor (52), a worm gear (53), and a worm (54). The motor (52) is fixedly mounted on the frame (1). The output shaft of the motor (52) is connected to the worm (54). The worm (54) meshes with the worm gear (53). The drive shaft (51) is rotatably connected to the frame (1). The worm gear (53) is fixedly mounted on the drive shaft (51). The output end of the drive shaft (51) is connected to the bevel gear set (82).

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