A non-woven fabric hot rolling device capable of online switching of rolling patterns and its hot rolling method

Abstract

The present invention relates to the technical field of fabric processing, and specifically relates to a non-woven fabric hot rolling device capable of online switching of rolling patterns and a hot rolling method thereof. The device includes a frame, and further includes: a pattern engraving roller group and a smooth roller group. The pattern engraving roller group includes a plurality of pattern engraving rollers arranged equidistantly along the circumference, and the smooth roller group includes a plurality of smooth rollers arranged equidistantly along the circumference. The pattern engraving roller group is located above the smooth roller group, and the pattern engraving roller group and the smooth roller group are respectively connected to a set of installation structures arranged inside the frame; the installation structure includes two relatively arranged mounting seats fixed on the inner wall of the frame. A plurality of the pattern engraving rollers are located between the two mounting seats and are connected to the mounting seats through a rotation driving mechanism; this device realizes the effective switching of rolling patterns through mechanical cooperation. Compared with manually replacing the pattern engraving rollers and smooth rollers, it is more time-saving and labor-saving, and the reliability of mechanical cooperation is high, which can ensure the accuracy of switching of multiple pattern engraving rollers.

Description

Technical Field

[0001] The present invention relates to the technical field of fabric processing, and specifically relates to a non-woven fabric hot rolling device capable of online switching of rolling patterns and a hot rolling method thereof. Background Art

[0002] The principle of rolling patterns of non-woven fabrics in hot rolling is mainly based on the working mode of a hot rolling machine. The fiber web is bonded together by high temperature and pressure to form a non-woven fabric with a specific pattern. Specifically, the hot rolling machine consists of upper and lower heating rollers. These rollers apply heat and pressure to the fiber web during operation, causing the fibers to melt and bond together at the hot rolling point or surface, thereby enhancing the strength and structural stability of the fibers.

[0003] The rolling pattern is usually related to the design of the engraved roller and the pressure of the engraved roller. For the former, when the pattern needs to be changed, it is often necessary for the staff to replace the engraved roller. In this regard, the disassembly and assembly process is rather troublesome and requires a long downtime, which affects the production efficiency. Moreover, due to manual disassembly and assembly, during secondary assembly, there may be a deviation in the installation position of the engraved roller, resulting in poor subsequent rolling effect.

[0004] In response to this, the existing hot rolling devices may be equipped with engraved rollers and smooth rollers with various different designs. By switching the positions of the engraved roller and the smooth roller, the adjustment of the rolling pattern is achieved. However, during specific adjustment, usually a hydraulic device needs to be equipped for each different roller to provide the pressure required for hot rolling the pattern. In addition, other driving mechanisms need to be set up to change the position of the roller. In this way, each time of switching, the position change and lifting of the roller rely on relatively complex programming control. When a failure occurs in one of the links, the switching of the rolling pattern will not be successful, and the overall failure rate of the device is relatively high, which is inconvenient for daily maintenance. Moreover, the complex programming and excessive setting of hydraulic devices also lead to an increase in the production input cost. Summary of the Invention

[0005] The purpose of the present invention is to provide a non-woven fabric hot rolling device capable of online switching of rolling patterns and a hot rolling method thereof, so as to solve the problems raised in the above background art.

[0006] To achieve the above object, the present invention provides the following technical solution: A non-woven fabric hot rolling device capable of online switching of rolling patterns, including a frame, further including: an engraved roller group and a smooth roller group. The engraved roller group includes a plurality of engraved rollers arranged equidistantly along the circumference, and the smooth roller group includes a plurality of smooth rollers arranged equidistantly along the circumference. And the engraved roller group is located above the smooth roller group. The engraved roller group and the smooth roller group are respectively connected with a set of mounting structures arranged in the frame; the mounting structure includes two relatively arranged mounting seats fixed on the inner wall of the frame. A plurality of the engraved rollers are located between the two mounting seats and are connected to the mounting seats through a rotation driving mechanism; wherein, the rotation driving mechanism is connected with a hydraulic driving mechanism arranged in the frame, and the hydraulic driving mechanism can first cause the engraved rollers to move away from the fabric, and then cause the rotation driving mechanism to be triggered, so that the rotation driving mechanism drives a plurality of the engraved rollers to rotate in a circle.

[0007] As a further solution of the present invention: The rotation driving mechanism includes a rotating shaft rotatably installed on the mounting seat and a plurality of guiding arm groups fixedly connected to the rotating shaft. The plurality of guiding arm groups are evenly distributed along the circumference on the rotating shaft, and the engraved roller can move along the length direction of the guiding arm group; one end of the rotating shaft away from the guiding arm group is connected to the hydraulic driving mechanism through a one-way transmission component, and the engraved roller is connected to a movable displacement component arranged on the guiding arm group, and the movable displacement component cooperates with the hydraulic driving mechanism.

[0008] As a further solution of the present invention: The movable displacement component includes a mounting block slidably arranged on the guiding arm group. The engraved roller is rotatably installed on the mounting block. A triangular block is fixedly arranged on one side of the mounting block facing the mounting seat. An inclined surface is arranged on the triangular block, and the inclined surface cooperates with the hydraulic driving mechanism to drive the engraved roller to move in a direction away from the axis of the rotating shaft when the hydraulic driving mechanism acts. The mounting block is connected with two groups of elastic support members arranged on the guiding arm group.

[0009] As a further solution of the present invention: A connecting plate is fixed on the guiding arm group. The elastic support member includes a guiding column fixed on the connecting plate and a second cylindrical spring sleeved on the outer circumference of the guiding column. The guiding column penetrates through a lug formed on the side of the mounting block and is slidably connected to the lug, and both ends of the second cylindrical spring are respectively connected to the lug and the connecting plate.

[0010] As a further solution of the present invention: The one-way transmission assembly includes a ratchet fixed to one end of the rotating shaft away from the guide arm group, and a ratchet plate movably arranged on the mounting seat and cooperating with the ratchet. Two guide rods are slidably arranged on the mounting seat, and a follower plate is fixedly connected between the two guide rods. The follower plate can be lifted and lowered relative to the mounting seat; the ratchet plate is fixed to the follower plate, and the follower plate is connected to the hydraulic driving mechanism.

[0011] As a further solution of the present invention: A limiting assembly is also provided between the rotating shaft and the mounting seat. The limiting assembly includes a plurality of limiting wheels movably arranged on the rotating shaft through a plurality of elastic telescopic members, and a limiting ring body fixed to the mounting seat. The central axes of the limiting ring body and the rotating shaft coincide, and a plurality of limiting notches adapted to the limiting wheels are arranged equidistantly along the circumference on the outer wall of the limiting ring body.

[0012] As a further solution of the present invention: The elastic telescopic member includes a mounting cylinder fixed to the rotating shaft and perpendicular to the rotating shaft, and a telescopic rod slidably sleeved with the mounting cylinder. The head end of the telescopic rod is fixed to a frustum slidably arranged inside the mounting cylinder, and the limiting wheel is rotatably installed at the tail end of the telescopic rod; wherein, a first cylindrical spring is also arranged inside the mounting cylinder. The first cylindrical spring is sleeved on the outer circumference of the telescopic rod and is connected to the frustum at one end and the inner wall of the mounting cylinder at the other end.

[0013] As a further solution of the present invention: The hydraulic driving mechanism includes a double-headed hydraulic cylinder installed inside the frame and a driving plate member fixedly installed at the movable end of the double-headed hydraulic cylinder. A connecting rod is arranged between the driving plate member and the follower plate, and the two ends of the connecting rod are respectively rotatably connected to the driving plate member and the follower plate; wherein, the driving plate member is also slidably connected to the rotating shaft, and a roller is rotatably installed at one end of the driving plate member away from the double-headed hydraulic cylinder. The roller cooperates with the triangular block.

[0014] A non-woven fabric hot rolling method uses the hot rolling device as described above; during hot rolling, the hydraulic driving mechanism provides pressure for the embossing roller and the smooth roller in the rolling position. The fabric located between the embossing roller and the smooth roller undergoes pattern rolling through the embossing roller and the smooth roller; when it is necessary to change the rolling pattern, the hydraulic driving mechanism first causes the embossing roller and the smooth roller to move away from the fabric, and then triggers the rotation driving mechanism. The rotation driving mechanism drives a plurality of embossing rollers and smooth rollers to perform circular rotation, so that different designed embossing rollers and smooth rollers are switched to the rolling position to change the rolling pattern of the fabric.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: the present application arranges a plurality of differently designed engraved rollers and smooth rollers equidistantly distributed along the circumference in the frame. When the rolling pattern needs to be changed during processing, the hydraulic drive mechanism can cause the engraved rollers and the smooth rollers to separate from the cloth, and then the rotary drive mechanism is triggered to make the plurality of engraved rollers and the plurality of smooth rollers move in a circle, thereby realizing online switching of the rolling pattern, without the need for workers to perform complex and time-consuming disassembly and assembly work, thus providing guarantee for the production progress, and also avoiding installation errors caused by manual operation, thereby ensuring the rolling effect in turn; secondly, the present device is in normal operation. During operation, only two double-headed hydraulic cylinders are needed to provide the engraved roller and the smooth roller with the pressure required for rolling the pattern. When switching the rolling pattern, the double-headed hydraulic cylinder works directly to cause the engraved roller and the smooth roller in the rolling position to move away from the cloth, and then the rotary drive mechanism is triggered. The rotary drive mechanism drives multiple engraved rollers and the smooth roller to rotate in a circle. Therefore, the present application realizes the position change of the engraved roller and the smooth roller in the circumferential direction through mechanical coordination, and realizes the switching function of the rolling pattern. The mechanical coordination has high reliability and does not need to rely on complex programming control, thereby improving the stability of the device operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic structural diagram of an embodiment of a nonwoven fabric hot rolling device capable of switching rolling patterns online;

[0017] Figure 2 It is a structural schematic diagram of another angle of an embodiment of a non-woven fabric hot rolling device capable of switching rolling patterns online;

[0018] Figure 3 A schematic diagram of the distribution of engraved rollers and smooth rollers in one embodiment of a non-woven fabric hot rolling device capable of switching rolling patterns online;

[0019] Figure 4 for Figure 3 A schematic diagram of the structure from another angle;

[0020] Figure 5 A schematic diagram of the distribution of multiple engraved rollers in one embodiment of a non-woven fabric hot rolling device capable of switching rolling patterns online;

[0021] Figure 6 for Figure 5 A schematic diagram of the structure from another angle;

[0022] Figure 7 for Figure 5 A magnified view of the structure at center A;

[0023] Figure 8 for Figure 6 A magnified view of the structure at B in the middle;

[0024] Figure 9Exploded view of the structure of the rotary drive mechanism in an embodiment of a non-woven fabric hot rolling device capable of online switching of rolling patterns;

[0025] Figure 10 Schematic diagram of the structure of the one-way transmission component in an embodiment of a non-woven fabric hot rolling device capable of online switching of rolling patterns.

[0026] In the figure: 1, frame; 2, engraved roller; 3, smooth roller; 4, mounting seat; 5, rotating shaft; 6, guiding arm group; 7, ratchet wheel; 8, ratchet plate; 9, guiding rod; 10, follower plate; 11, mounting cylinder; 12, telescopic rod; 13, limiting wheel; 14, frustum; 15, first cylindrical spring; 16, limiting ring body; 1601, limiting notch; 17, mounting block; 1701, lug; 18, connecting plate; 19, guiding column; 20, second cylindrical spring; 21, triangular block; 22, roller; 23, connecting rod; 24, driving plate member; 25, double-headed hydraulic cylinder. Detailed implementation manners

[0027] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0028] In addition, an element in the present invention is referred to as being "fixed to" or "disposed on" another element, and it can be directly on the other element or there can also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are only for the purpose of illustration and do not represent the only implementation manners.

[0029] Please refer to Figures 1 - 10, in the embodiments of the present invention, a non-woven fabric hot rolling device capable of online switching of rolling patterns includes a frame 1, and further includes: an engraved roller group and a smooth roller group. The engraved roller group includes a plurality of engraved rollers 2 arranged equidistantly along the circumference, and the smooth roller group includes a plurality of smooth rollers 3 arranged equidistantly along the circumference. And the engraved roller group is located above the smooth roller group. The engraved roller group and the smooth roller group are respectively connected with a set of mounting structures arranged in the frame 1; the mounting structure includes two opposite mounting seats 4 fixed on the inner wall of the frame 1. A plurality of the engraved rollers 2 are located between the two mounting seats 4 and are connected to the mounting seats 4 through a rotary drive mechanism; wherein, the rotary drive mechanism is connected with a hydraulic drive mechanism arranged in the frame 1, and the hydraulic drive mechanism can first cause the engraved roller 2 to move away from the fabric, and then cause the rotary drive mechanism to be triggered, so that the rotary drive mechanism drives a plurality of the engraved rollers 2 to rotate in a circle.

[0030] It should be added that the designs of the plurality of engraved rollers 2 are different to facilitate the change of the rolling pattern. In actual processing, when different engraved rollers 2 are used, in order to achieve the best hot bonding effect and product surface quality, it is necessary to select the matching smooth roller 3. For this reason, the plurality of smooth rollers 3 are also different and are respectively matched with the plurality of engraved rollers 2.

[0031] Take the attached Figure 1 state as an example. When starting to work, the hydraulic drive mechanism works, which will cause the engraved roller 2 close to the fabric to move towards the fabric. Similarly, the smooth roller 3 close to the fabric and matched with the engraved roller 2 moves towards the fabric until the fabric is pressed between the engraved roller 2 and the smooth roller 3 to achieve the effect of the rolling pattern. During this process, the rotary drive mechanism is not triggered; when it is necessary to change the rolling pattern, the hydraulic drive mechanism works, first causing the engraved roller 2 in contact with the fabric to lift, and correspondingly, the smooth roller 3 in contact with the fabric to move down. Subsequently, the rotary drive mechanism is triggered, which will drive the plurality of engraved rollers 2 to rotate in a circle, so as to switch different designed engraved rollers 2 (smooth rollers 3). Subsequently, the hydraulic drive mechanism then drives the replaced engraved roller 2 (smooth roller 3) to apply pressure to the fabric to realize the switching function of the rolling pattern; In summary, in this application, by arranging a plurality of engraved rollers 2 and smooth rollers 3 with different designs and equidistantly distributed along the circumference in the frame 1, when it is necessary to change the rolling pattern, the hydraulic drive mechanism can cause the engraved roller 2 and the smooth roller 3 to separate from the fabric, and then by triggering the rotary drive mechanism, the plurality of engraved rollers 2 and the plurality of smooth rollers 3 rotate in a circle to realize the online switching of the rolling pattern, without the need for workers to carry out complex and time-consuming disassembly and assembly work, providing guarantee for the production progress, and at the same time avoiding the installation errors caused by manual operation, and sequentially ensuring the rolling effect.

[0032] It should be noted that since the installation methods of the multiple embossing rollers 2 and the multiple light rollers 3 are the same, the following describes the installation of the embossing roller 2: Please refer to again Figure 9 , the rotary drive mechanism includes a rotating shaft 5 rotatably installed on the mounting base 4 and a plurality of guide arm groups 6 fixedly connected to the rotating shaft 5. The plurality of guide arm groups 6 are equidistantly distributed along the circumference on the rotating shaft 5, and the embossing roller 2 can move along the length direction of the guide arm group 6; wherein, one end of the rotating shaft 5 away from the guide arm group 6 is connected to the hydraulic drive mechanism through a one-way transmission component, the embossing roller 2 is connected to a movable displacement component provided on the guide arm group 6, and the movable displacement component cooperates with the hydraulic drive mechanism.

[0033] Specifically, whenever the rolling pattern is switched, the hydraulic drive mechanism can first cause the movable displacement component to move, so that the movable displacement component causes the embossing roller 2 in contact with the fabric to move upward and lift along the radial direction of the rotating shaft 5. After the embossing roller 2 is separated from the fabric, the one-way transmission component is triggered, so that the rotating shaft 5 rotates (the rotation angle is the angle between two adjacent embossing rollers 2). Therefore, the embossing roller 2 located at the rolling position can be replaced, and the function of switching the rolling pattern can be realized. After the switching action is completed, the hydraulic drive mechanism cooperates with the movable displacement component again, so that the embossing roller 2 located at the rolling position moves downward to apply a certain pressure to the fabric, realizing the effect of pattern rolling. Therefore, this device realizes the effective switching of the rolling pattern by means of mechanical cooperation. Compared with manually replacing the embossing roller 2, it is more time-saving and labor-saving, and the reliability of mechanical cooperation is high, which can ensure the accuracy of the switching of multiple embossing rollers 2, avoid the deviation of the installation position of the roller caused by manual replacement, and then lead to poor rolling effect of the pattern, affect the product quality and cause losses.

[0034] Please refer to again Figure 8 and Figure 9, the movable displacement component includes a mounting block 17 slidably disposed on the guiding arm group 6. The embossing roller 2 is rotatably mounted on the mounting block 17. A triangular block 21 is fixedly provided on one side of the mounting block 17 facing the mounting seat 4. The triangular block 21 is provided with an inclined surface, which cooperates with the hydraulic driving mechanism to drive the embossing roller 2 to move away from the axis of the rotating shaft 5 when the hydraulic driving mechanism operates. The mounting block 17 is connected with two elastic support members disposed on the guiding arm group 6. A connecting plate 18 is fixed on the guiding arm group 6. The elastic support member includes a guiding column 19 fixed on the connecting plate 18 and a second cylindrical spring 20 sleeved on the outer periphery of the guiding column 19. The guiding column 19 penetrates through a lug 1701 formed on the side of the mounting block 17 and is slidably connected with the lug 1701. The two ends of the second cylindrical spring 20 are respectively connected to the lug 1701 and the connecting plate 18.

[0035] Specifically, the triangular block 21 is preferably in the shape of a right triangle, including a right side a, a right side b, and a hypotenuse c. The hypotenuse c is the inclined surface mentioned above. The right side a is parallel to the axial direction of the rotating shaft 5, the right side b is perpendicular to the axial direction of the rotating shaft 5, and the hypotenuse c is inclined towards the axis of the rotating shaft 5. When the inclined surface (hypotenuse c) of the triangular block 21 is subjected to a squeezing force parallel to the axial direction of the rotating shaft 5, and the squeezing force continuously squeezes from the connection between the right side a and the hypotenuse c, the triangular block 21 can be made to move away from the axis of the rotating shaft 5.

[0036] After the embossing roller 2 is switched, the hydraulic driving mechanism will work and act on the inclined surface of the triangular block 21, causing the triangular block 21 to make a downward concession. Thus, the embossing roller 2 at the rolling position moves downward. Correspondingly, the second cylindrical spring 20 is compressed. Further, the function of the second cylindrical spring 20 is to support the mounting block 17, so that when the embossing roller 2 does not participate in rolling, a certain distance can be maintained between the embossing roller 2 and the rotating shaft 5. Thus, when the one-way transmission component is triggered and the rotating shaft 5 is driven to rotate, the multiple embossing rollers 2 and the multiple light rollers 3 will not contact the fabric during circular motion, avoiding pulling damage to the fabric.

[0037] The one-way transmission assembly includes a ratchet wheel 7 fixed to one end of the rotating shaft 5 away from the guide arm group 6, and a ratchet plate 8 movably arranged on the mounting base 4 and cooperating with the ratchet wheel 7. Two guide rods 9 are slidably arranged on the mounting base 4. Specifically, the two guide rods 9 are axially parallel and penetrate through the mounting base 4. A follower plate 10 is fixedly connected between the two guide rods 9, so that the follower plate 10 can only move relative to the mounting base 4 in a direction parallel to the axial direction of the guide rods 9. The ratchet plate 8 is fixed to the follower plate 10, and the follower plate 10 is connected to the hydraulic driving mechanism.

[0038] When it is necessary to switch the rolling pattern during work, the hydraulic driving mechanism works. First, the action on the triangular block 21 is released, the second cylindrical spring 20 rebounds, and the mounting block 17 drives the engraving roller 2 to lift up and separate from the fabric. Subsequently, the hydraulic driving mechanism drives the follower plate 10 to move downward. During this process, the ratchet teeth on the ratchet plate 8 act on the ratchet wheel 7, causing the ratchet wheel 7 to rotate. Thus, the rotating shaft 5 can drive multiple engraving rollers 2 to perform circular motion through the guide arm group 6 and change the position in the circumferential direction. After the engraving roller 2 is switched, the hydraulic driving mechanism resets. During this process, it first drives the follower plate 10 to drive the ratchet plate 8 to move upward. The ratchet teeth on the ratchet plate 8 will flip when passing through the ratchet wheel 7 and cannot drive the ratchet wheel 7 to rotate, so that the engraving roller 2 maintains the switched state. Subsequently, the hydraulic driving mechanism acts on the inclined surface of the triangular block 21, prompting the triangular block 21 to make a downward displacement, so that the engraving roller 2 located at the rolling position moves downward and applies pressure to the fabric.

[0039] Please refer to again Figure 7 、 Figure 9 and Figure 10 As shown in, a limiting component is further arranged between the rotating shaft 5 and the mounting base 4. The limiting component includes a plurality of limiting wheels 13 movably arranged on the rotating shaft 5 through a plurality of elastic telescopic components and a limiting ring body 16 fixed on the mounting base 4. The central axes of the limiting ring body 16 and the rotating shaft 5 coincide, and a plurality of limiting notches 1601 adapted to the shape of the limiting wheels 13 are arranged at equal intervals along the circumference of the outer wall of the limiting ring body 16. The elastic telescopic component includes a mounting cylinder 11 fixed on the rotating shaft 5 and perpendicular to the rotating shaft 5, and a telescopic rod 12 slidably sleeved on the mounting cylinder 11. The head end of the telescopic rod 12 is fixed to a frustum 14 slidably arranged inside the mounting cylinder 11, and the limiting wheel 13 is rotatably installed at the tail end of the telescopic rod 12. A first cylindrical spring 15 is further arranged inside the mounting cylinder 11. The first cylindrical spring 15 is sleeved on the outer circumference of the telescopic rod 12 and is connected to the frustum 14 at one end and the inner wall of the mounting cylinder 11 at the other end.

[0040] Taking the state shown as an example Figure 5 When multiple said limiting wheels 13 are respectively located in multiple said limiting notches 1601, whenever the ratchet wheel 7 drives the rotating shaft 5 to rotate, the limiting wheels 13 will disengage from the limiting notches 1601 and roll onto the outer wall of the limiting ring body 16. The telescopic rod 12 slides towards the outside of the mounting cylinder 11, and the first cylindrical spring 15 is compressed. After the rotating shaft 5 finishes rotating, the limiting wheels 13 roll into adjacent limiting notches 1601. In this regard, under the elastic action of the first cylindrical spring 15, the limiting wheels 13 can be firmly stuck in the limiting notches 1601, playing a stabilizing role in the state after the position transformation of the multiple said engraved rollers 2 is completed.

[0041] Please refer to again Figure 6 、 Figure 8 and Figure 10 As shown in, the hydraulic driving mechanism includes a double-headed hydraulic cylinder 25 installed in the frame 1 and a driving plate member 24 fixedly installed at the movable end of the double-headed hydraulic cylinder 25. A connecting rod 23 is provided between the driving plate member 24 and the follower plate 10, and both ends of the connecting rod 23 are rotatably connected to the driving plate member 24 and the follower plate 10 respectively. The driving plate member 24 is also axially slidably connected to the rotating shaft 5, and a roller 22 is rotatably installed at one end of the driving plate member 24 away from the double-headed hydraulic cylinder 25, and the roller 22 cooperates with the triangular block 21.

[0042] Taking the attached Figure 6Taking the state shown as an example, when the movable end of the double-headed hydraulic cylinder 25 contracts, it will drive the driving plate 24 to slide away from the mounting seat 4 on the rotating shaft 5, and pull the follower plate 10 through the connecting rod 23 to drive the ratchet plate 8 to rise. During this process, the ratchet on the ratchet plate 8 cannot drive the ratchet wheel 7 to rotate. After the ratchet plate 8 is separated from the ratchet wheel 7, the roller 22 will act on the inclined surface of the triangular block 21, so that the triangular block 21 drives the mounting block 17 to slide away from the rotating shaft 5 on the guide arm group 6, and the second cylindrical spring 20 is compressed until the engraved roller 2 and the smooth roller 3 act on the fabric and apply the pressure required for rolling the pattern. When it is necessary to change the rolling pattern, the movable end of the double-headed hydraulic cylinder 25 extends, driving the driving plate 24 to slide towards the mounting seat 4 on the rotating shaft 5, and the roller 22 gradually moves away from the triangular block 21. Then, the second cylindrical spring 20 rebounds, causing the engraved roller 2 and the smooth roller 3 at the rolling position to move away from the fabric. At the same time, the driving plate 24 pushes the follower plate 10 through the connecting rod 23 to drive the ratchet plate 8 to descend. After the roller 22 is completely separated from the triangular block 21, the ratchet on the ratchet plate 8 cooperates with the ratchet wheel 7 and prompts the ratchet wheel 7 to rotate, so that the rotating shaft 5 can drive the engraved roller 2 to perform a circular motion, and multiple engraved rollers 2 perform a position change in the circumferential direction to realize the switching function of the rolling pattern.

[0043] As an embodiment of the present invention, a non-woven fabric hot rolling method is also proposed, using the above-mentioned hot rolling device. During hot rolling, the hydraulic drive mechanism provides pressure for the engraved roller 2 and the smooth roller 3 at the rolling position, and the fabric located between the engraved roller 2 and the smooth roller 3 undergoes pattern rolling through the engraved roller 2 and the smooth roller 3. When it is necessary to change the rolling pattern, the hydraulic drive mechanism first prompts the engraved roller 2 and the smooth roller 3 to move away from the fabric, and then prompts the rotation drive mechanism to be triggered. The rotation drive mechanism drives multiple engraved rollers 2 and smooth rollers 3 to perform circular rotation, so that different designed engraved rollers 2 and smooth rollers 3 are switched to the rolling position to change the rolling pattern of the fabric.

[0044] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above-mentioned exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention. Any reference signs in the claims should not be regarded as limiting the claimed rights.

[0045] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A nonwoven fabric hot rolling device capable of switching rolling patterns online, comprising a frame (1); characterized in that: Also includes: An engraved roller group and a smooth roller group, wherein the engraved roller group comprises a plurality of engraved rollers (2) arranged equidistantly along a circumference, and the smooth roller group comprises a plurality of smooth rollers (3) arranged equidistantly along a circumference, the engraved roller group being located above the smooth roller group, the engraved roller group and the smooth roller group being respectively connected to a group of mounting structures arranged in the frame (1); the mounting structure comprising two mounting seats (4) fixed on the inner wall of the frame (1) and arranged opposite to each other, the plurality of engraved rollers (2) being located between the two mounting seats (4) and being connected to the mounting seats (4) via a rotary drive mechanism; wherein the rotary drive mechanism is connected to a hydraulic drive mechanism arranged in the frame (1), the hydraulic drive mechanism being able to firstly cause the engraved rollers (2) to move away from the cloth, and then causing the rotary drive mechanism to be triggered, so that the rotary drive mechanism drives the plurality of engraved rollers (2) to rotate in a circle; the rotary drive mechanism comprising a rotating shaft (5) rotatably mounted on the mounting seat (4) and a plurality of guide arms fixedly connected to the rotating shaft (5) The invention relates to a guide arm group (6), wherein the engraved roller (2) is movable along the length direction of the guide arm group (6); the end of the rotating shaft (5) away from the guide arm group (6) is connected to the hydraulic drive mechanism through a one-way transmission component; the engraved roller (2) is connected to a movable displacement component provided on the guide arm group (6), and the movable displacement component cooperates with the hydraulic drive mechanism; the movable displacement component comprises a mounting block (17) slidably provided on the guide arm group (6); the engraved roller (2) is rotatably mounted on the mounting block (17); a triangular block (21) is fixedly provided on one side of the mounting block (17) facing the mounting seat (4); the triangular block (21) is provided with an inclined surface, and the inclined surface cooperates with the hydraulic drive mechanism and is used for cooperating with the inclined surface on the triangular block (21) to drive the engraved roller (2) to move in a direction away from the axis of the rotating shaft (5) when the hydraulic drive mechanism is actuated; the mounting block (17) is connected to two groups of elastic support members provided on the guide arm group (6); A connecting plate (18) is fixed on the guide arm group (6), the elastic support member comprises a guide column (19) fixed on the connecting plate (18) and a second cylindrical spring (20) sleeved on the outer circumference of the guide column (19), the guide column (19) penetrates a lug (1701) formed on the side of the mounting block (17) and is slidably connected to the lug (1701), and two ends of the second cylindrical spring (20) are respectively connected to the lug (1701) and the connecting plate (18); The one-way transmission assembly comprises a ratchet (7) fixed to one end of the rotating shaft (5) away from the guide arm group (6) and a ratchet plate (8) movably arranged on the mounting seat (4) and cooperating with the ratchet (7); two guide rods (9) are slidably arranged on the mounting seat (4); a follower plate (10) is fixedly connected between the two guide rods (9); the follower plate (10) can be raised and lowered relative to the mounting seat (4); the ratchet plate (8) is fixed on the follower plate (10), and the follower plate (10) is connected to the hydraulic drive mechanism.

2. A non-woven fabric hot rolling device capable of switching rolling patterns online according to claim 1, characterized in that: The plurality of guide arm groups (6) are equidistantly distributed along the circumference of the rotating shaft (5).

3. The nonwoven fabric hot rolling device capable of switching rolling patterns online according to claim 1, characterized in that: A limiting assembly is also provided between the rotating shaft (5) and the mounting seat (4), the limiting assembly comprising a plurality of limiting wheels (13) movably provided on the rotating shaft (5) via a plurality of sets of elastic telescopic parts and a limiting ring body (16) fixed on the mounting seat (4), the central axes of the limiting ring body (16) and the rotating shaft (5) being coincident, and a plurality of limiting recesses (1601) adapted to the limiting wheels (13) being provided on the outer wall of the limiting ring body (16) at equal intervals along the circumference.

4. A non-woven fabric hot rolling device capable of switching rolling patterns online according to claim 3, characterized in that: The elastic telescopic member comprises a mounting tube (11) fixed on the rotating shaft (5) and perpendicular to the rotating shaft (5), and a telescopic rod (12) slidably fitted with the mounting tube (11), the head end of the telescopic rod (12) being fixed to a round table (14) slidably arranged inside the mounting tube (11), and the limiting wheel (13) being rotatably mounted on the tail end of the telescopic rod (12); wherein the mounting tube (11) is further provided with a have A first cylindrical spring (15), the first cylindrical spring (15) being sleeved on the outer circumference of the telescopic rod (12), one end of the first cylindrical spring being connected to the truncated table (14), and the other end of the first cylindrical spring being connected to the inner wall of the mounting tube (11).

5. The nonwoven fabric hot rolling device capable of switching rolling patterns online according to claim 1, characterized in that: The hydraulic drive mechanism comprises a double-headed hydraulic cylinder (25) installed in the frame (1) and a driving plate (24) fixedly installed on the movable end of the double-headed hydraulic cylinder (25); a connecting rod (23) is provided between the driving plate (24) and the follower plate (10); the two ends of the connecting rod (23) are rotatably connected to the driving plate (24) and the follower plate (10), respectively; wherein the driving plate (24) is also slidably connected to the rotating shaft (5); and a roller (22) is rotatably installed on one end of the driving plate (24) away from the double-headed hydraulic cylinder (25); the roller (22) cooperates with the triangular block (21).

6. A nonwoven fabric hot rolling method, using the nonwoven fabric hot rolling device as claimed in claim 1, characterized in that: During hot rolling, the hydraulic drive mechanism provides pressure to the engraved roller (2) and the smooth roller (3) in the rolling position, and the cloth located between the engraved roller (2) and the smooth roller (3) passes through the engraved roller (2) and the smooth roller (3) to complete the pattern rolling; when it is necessary to change the rolling pattern, the hydraulic drive mechanism first causes the engraved roller (2) and the smooth roller (3) to move away from the cloth, and then causes the rotary drive mechanism to be triggered, and the rotary drive mechanism drives the plurality of engraved rollers (2) and the smooth roller (3) to rotate in a circle, so that the engraved rollers (2) and the smooth roller (3) of different designs are switched to the rolling position, thereby changing the rolling pattern of the cloth.

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