Non-woven fabric hot rolling device capable of switching rolling patterns on line and hot rolling method of non-woven fabric hot rolling device

Abstract

The invention relates to the related technical field of fabric processing, in particular to a non-woven fabric hot rolling device capable of switching rolling patterns online and a hot rolling method thereof.The non-woven fabric hot rolling device comprises a rack and further comprises an engraving roller set and a smooth roller set, the engraving roller set comprises a plurality of engraving rollers arranged at equal intervals along the circumference, and the smooth roller set comprises a plurality of smooth rollers arranged at equal intervals along the circumference; the engraving roller set is located above the smooth roller set, and the engraving roller set and the smooth roller set are each connected with a set of installation structures arranged in the machine frame. The mounting structure comprises two mounting seats which are fixed on the inner wall of the rack and are oppositely arranged, and the plurality of engraving rollers are positioned between the two mounting seats and are connected with the mounting seats through a rotary driving mechanism; according to the device, rolling patterns are effectively switched in a mechanical matching mode, compared with manual replacement of the engraving roller and the smooth roller, more time and labor are saved, the reliability of mechanical matching is high, and the switching accuracy of the multiple engraving rollers can be guaranteed.

Description

Technical Field

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

[0002] The principle of hot rolling of non-woven fabrics is mainly based on the working mode of hot rolling mill, which bonds the fiber web together through high temperature and pressure to form non-woven fabrics with specific patterns. Specifically, the hot rolling mill consists of upper and lower heated rollers, which apply heat and pressure to the fiber web during operation, so that the fibers melt and bond together at the hot rolling points or surfaces, 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, the staff often needs to replace the engraved roller. For this, the disassembly and assembly process is more troublesome and requires a long downtime, which affects the production efficiency. Moreover, due to manual disassembly and assembly, the installation position of the engraved roller may deviate during the secondary assembly, resulting in poor subsequent rolling effect.

[0004] In this regard, existing hot rolling devices may be equipped with a variety of engraved rollers and smooth rollers of different designs. The rolling pattern can be adjusted by switching the positions of the engraved rollers and smooth rollers. However, during specific adjustments, different rollers usually need to be equipped with a hydraulic device to provide the pressure required for hot rolling. In addition, other driving mechanisms need to be set up to change the position of the rollers. In this way, each time the rollers are switched, the position change and lifting and lowering of the rollers need to rely on more complex programming control. When one of the links fails, the switching of the rolling pattern will fail. The overall failure rate of the device is high, which is inconvenient for daily maintenance. In addition, complex programming and excessive settings of hydraulic devices also increase the production investment cost. Summary of the invention

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

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a non-woven fabric hot rolling device capable of switching rolling patterns online, comprising a frame, and also comprising: an engraved roller group and a smooth roller group, wherein the engraved roller group comprises a plurality of engraved rollers equidistantly arranged along the circumference, and the smooth roller group comprises a plurality of smooth rollers equidistantly arranged along the circumference, and the engraved roller group is located above the smooth roller group, and the engraved roller group and the smooth roller group are respectively connected to a group of mounting structures arranged in the frame; the mounting structure comprises two mounting seats fixed on the inner wall of the frame and arranged opposite to each other, and the plurality of engraved rollers are located between the two mounting seats and connected to the mounting seats through a rotary drive mechanism; wherein the rotary drive mechanism is connected to a hydraulic drive mechanism arranged in the frame, and the hydraulic drive mechanism can first cause the engraved roller to move away from the cloth, and then cause the rotary drive mechanism to be triggered, so that the rotary drive mechanism drives the plurality of engraved rollers to rotate in a circle.

[0007] As a further solution of the present invention: the rotary drive mechanism includes a rotating shaft rotatably mounted on the mounting seat and a plurality of guide arm groups fixedly connected to the rotating shaft, the plurality of guide arm groups are equidistantly distributed along the circumference of the rotating shaft, and the engraved roller can move along the length direction of the guide arm group; one end of the rotating shaft away from the guide arm group is connected to the hydraulic drive mechanism through a one-way transmission assembly, the engraved roller is connected to a movable shift assembly provided on the guide arm group, and the movable shift assembly cooperates with the hydraulic drive mechanism.

[0008] As a further solution of the present invention: the movable shifting assembly includes a mounting block slidably arranged on the guide arm group, the engraved roller is rotatably mounted on the mounting block, a triangular block is fixedly provided on the side of the mounting block facing the mounting seat, the triangular block is provided with an inclined surface, and the inclined surface cooperates with the hydraulic drive mechanism to cooperate with the inclined surface on the triangular block to drive the engraved roller to move in a direction away from the axis of the rotating shaft when the hydraulic drive mechanism is actuated, and the mounting block is connected to two groups of elastic support members arranged on the guide arm group.

[0009] As a further solution of the present invention: a connecting plate is fixed on the guide arm group, and the elastic support member includes a guide column fixed on the connecting plate and a second cylindrical spring sleeved on the outer periphery of the guide column, the guide column passes through a lug formed on the side of the mounting block and is slidably connected to the lug, and the two 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 provided on the mounting seat, a follower plate is fixedly connected between the two guide rods, and the follower plate can be raised 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 drive mechanism.

[0011] As a further solution of the present invention: a limit assembly is also provided between the rotating shaft and the mounting seat, and the limit assembly includes a plurality of limit wheels movably provided on the rotating shaft through a plurality of groups of elastic telescopic parts and a limit ring body fixed on the mounting seat, the central axes of the limit ring body and the rotating shaft coincide with each other, and the outer wall of the limit ring body is provided with a plurality of limit recesses which are equidistant along the circumference and are adapted to the limit wheels.

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

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

[0014] A nonwoven fabric hot rolling method adopts the hot rolling device; during hot rolling, a hydraulic drive mechanism provides pressure to an engraved roller and a smooth roller in a rolling position, and the fabric between the engraved roller and the smooth roller passes through the engraved roller and the smooth roller to complete pattern rolling; when the rolling pattern needs to be changed, the hydraulic drive mechanism first drives the engraved roller and the smooth roller away from the fabric, and then triggers a rotary drive mechanism, which drives a plurality of engraved rollers and the smooth roller to rotate in a circle, so that engraved rollers and smooth rollers of different designs are switched to the rolling position, thereby changing 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 non-woven fabric hot rolling device capable of switching rolling patterns online; 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; 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; Figure 4 for Figure 3 A schematic diagram of the structure from another angle; 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; Figure 6 for Figure 5 A schematic diagram of the structure from another angle; Figure 7 for Figure 5 A magnified view of the structure at center A; Figure 8 for Figure 6 A magnified view of the structure at B in the middle; Fig. 9 It is a structural exploded diagram of a rotary drive mechanism in one embodiment of a non-woven fabric hot rolling device capable of switching rolling patterns online; Fig.10 The present invention is a schematic structural diagram of a one-way transmission component in an embodiment of a non-woven fabric hot rolling device capable of switching rolling patterns online.

[0017] In the figure: 1, frame; 2, engraved roller; 3, smooth roller; 4, mounting seat; 5, rotating shaft; 6, guide arm group; 7, ratchet; 8, ratchet plate; 9, guide rod; 10, follower plate; 11, mounting cylinder; 12, telescopic rod; 13, limiting wheel; 14, round table; 15, first cylindrical spring; 16, limiting ring body; 1601, limiting recess; 17, mounting block; 1701, lug; 18, connecting plate; 19, guide column; 20, second cylindrical spring; 21, triangular block; 22, roller; 23, connecting rod; 24, driving plate; 25, double-headed hydraulic cylinder. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] In addition, when an element in the present invention is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only embodiment.

[0020] See also Figure 1-Figure 10 In an embodiment of the present invention, a non-woven fabric hot rolling device capable of switching rolling patterns online comprises a frame 1, and also comprises: an engraved roller group and a smooth roller group, wherein the engraved roller group comprises a plurality of engraved rollers 2 equidistantly arranged along the circumference, and the smooth roller group comprises a plurality of smooth rollers 3 equidistantly arranged along the circumference, and the engraved roller group is located above the smooth roller group, and the engraved roller group and the smooth roller group are respectively connected with a group of mounting structures arranged in the frame 1; the mounting structure comprises two mounting seats 4 fixed on the inner wall of the frame 1 and arranged oppositely, and the plurality of engraved rollers 2 are located between the two mounting seats 4 and 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 firstly cause the engraved rollers 2 to move away from the cloth, and then cause 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.

[0021] It should be noted that the designs of the multiple 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-melt effect and product surface quality, a matching smooth roller 3 must be selected. For this purpose, the multiple smooth rollers 3 are also different and are matched with the multiple engraved rollers 2 respectively.

[0022] Attach Figure 1 As an example, when the work starts, the hydraulic drive mechanism works, which will cause the engraved roller 2 close to the cloth to move toward the cloth. Similarly, the smooth roller 3 close to the cloth and matching the engraved roller 2 moves toward the cloth until the cloth is pressed between the engraved roller 2 and the smooth roller 3, so as to achieve the effect of rolling the pattern. During this process, the rotary drive mechanism is not triggered; when the rolling pattern needs to be changed, the hydraulic drive mechanism works, first causing the engraved roller 2 in contact with the fabric to lift up, and correspondingly, the smooth roller 3 in contact with the fabric moves down, and then the rotary drive mechanism is triggered, which will drive the multiple engraved rollers 2 to do circular motion, thereby switching engraved rollers 2 (smooth rollers 3) of different designs. Afterwards, the hydraulic drive mechanism drives the replaced engraved roller 2 (smooth roller 3) to apply pressure to the cloth to realize the switching function of the rolling pattern; in summary, the present application arranges a plurality of engraved rollers 2 and smooth rollers 3 with different designs and equidistantly distributed along the circumference in the frame 1. When the rolling pattern needs to be changed, the hydraulic drive mechanism can cause the engraved roller 2 and the smooth roller 3 to separate from the cloth, and then trigger the rotary drive mechanism to make the plurality of engraved rollers 2 and the plurality of smooth rollers 3 move in a circle, thereby realizing online switching of the rolling pattern. There is no need for the staff to perform complicated and time-consuming disassembly and assembly work, thereby providing guarantee for the production progress, and at the same time avoiding the installation errors caused by manual operation, thereby ensuring the rolling effect in turn.

[0023] It should be noted that, since the installation method of the plurality of engraved rollers 2 is the same as that of the plurality of smooth rollers 3, the following is a description of the installation of the engraved rollers 2: Please refer to Fig. 9 The rotary drive mechanism includes a rotating shaft 5 rotatably mounted on the mounting seat 4 and a plurality of guide arm groups 6 fixedly connected to the rotating shaft 5, wherein the plurality of guide arm groups 6 are equidistantly distributed along the circumference of the rotating shaft 5, and the engraved 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 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.

[0024] 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 engraved roller 2 in contact with the cloth to move and lift up along the radial direction of the rotating shaft 5. After the engraved roller 2 is separated from the cloth, the one-way transmission component is triggered, so that the rotating shaft 5 is rotated (the rotation angle is the angle between two adjacent engraved rollers 2). Therefore, the engraved roller 2 located at the rolling position can be replaced to realize the switching function of the rolling pattern. After the switching action is completed, the hydraulic drive mechanism cooperates with the movable displacement component again to move the engraved roller 2 located at the rolling position downward, exerting a certain pressure on the cloth to achieve the effect of pattern rolling. Therefore, the device uses mechanical cooperation to achieve effective switching of the rolling pattern. Compared with manual replacement of the engraved roller 2, 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 engraved rollers 2 and avoid deviation of the roller installation position caused by manual replacement, which leads to poor rolling effect of the pattern, affecting product quality and causing losses.

[0025] Please refer again Figure 8 and Fig. 9 The movable displacement assembly includes a mounting block 17 slidably mounted on the guide arm group 6, the engraved roller 2 is rotatably mounted on the mounting block 17, a triangular block 21 is fixedly mounted on the side of the mounting block 17 facing the mounting seat 4, and a slope is arranged on the triangular block 21, and the slope cooperates with the hydraulic drive mechanism, and is used to cooperate with the slope 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, and the mounting block 17 is connected to two groups of elastic support members arranged on the guide arm group 6. A connecting plate 18 is fixed on the guide arm group 6, and the elastic support member includes a guide column 19 fixed on the connecting plate 18 and a second column spring 20 sleeved on the outer periphery of the guide column 19, the guide column 19 penetrates the lug 1701 formed on the side of the mounting block 17 and is slidably connected to the lug 1701, and the two ends of the second column spring 20 are respectively connected to the lug 1701 and the connecting plate 18.

[0026] Specifically, the triangular block 21 is preferably in the shape of a right triangle, which comprises a right side a, a right side b and a hypotenuse c, wherein the hypotenuse c is the above-mentioned inclined surface; 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 toward the axis of the rotating shaft 5. When the inclined surface (hypotenuse c) on the triangular block 21 is subjected to an extrusion force parallel to the axial direction of the rotating shaft 5, and the extrusion force continues to squeeze from the connection between the right side a and the hypotenuse c, the triangular block 21 can be moved in a direction away from the axis of the rotating shaft 5.

[0027] After the engraved roller 2 is switched, the hydraulic drive mechanism will work and act on the inclined surface of the triangular block 21, causing the triangular block 21 to give way downward, so that the engraved roller 2 located at the rolling position moves downward, and accordingly, 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 engraved roller 2 is not involved in rolling, a certain distance can be maintained between the engraved roller 2 and the rotating shaft 5, so that when the one-way transmission component is triggered and the rotating shaft 5 is driven to rotate, multiple engraved rollers 2 and multiple smooth rollers 3 will not contact the cloth when they make circular motion, thereby avoiding pulling damage to the cloth.

[0028] The one-way transmission assembly includes 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 provided on the mounting seat 4. Specifically, the two guide rods 9 are axially parallel and pass through the mounting seat 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 seat 4 in a direction parallel to the axial direction of the guide rods 9. The ratchet plate 8 is fixed on the follower plate 10, and the follower plate 10 is connected to the hydraulic drive mechanism.

[0029] When the rolling pattern needs to be switched during operation, the hydraulic drive mechanism works, and the effect on the triangular block 21 is first released. The second cylindrical spring 20 rebounds, and the mounting block 17 drives the engraved roller 2 to be lifted and separated from the cloth. Then, the hydraulic drive mechanism drives the follower plate 10 to move downward. During this process, the ratchet on the ratchet plate 8 acts on the ratchet wheel 7, causing the ratchet wheel 7 to rotate. Thus, the rotating shaft 5 can drive the multiple engraved rollers 2 to make circular motion through the guide arm group 6, changing the circumference. direction; after the engraved roller 2 is switched, the hydraulic drive mechanism is reset. During this process, the follower plate 10 will be driven to drive the ratchet plate 8 to move upward. The ratchet on the ratchet plate 8 will flip over when passing through the ratchet wheel 7, and will not be able to drive the ratchet wheel 7 to rotate, so that the engraved roller 2 maintains the switched state. Subsequently, the hydraulic drive mechanism will act on the inclined surface on the triangular block 21, causing the triangular block 21 to give way downward, thereby causing the engraved roller 2 located in the rolling position to move downward and apply pressure to the cloth.

[0030] Please refer again Figure 7 , Fig. 9 as well as Fig.10A limiting assembly is also provided between the rotating shaft 5 and the mounting seat 4, and the limiting assembly includes a plurality of limiting wheels 13 movably provided on the rotating shaft 5 through a plurality of sets of elastic telescopic parts and a limiting ring body 16 fixed on the mounting seat 4, the limiting ring body 16 and the central axis of the rotating shaft 5 coincide with each other, and the outer wall of the limiting ring body 16 is provided with a plurality of limiting recesses 1601 equidistantly along the circumference and matching the shape of the limiting wheels 13. The elastic telescopic part includes a mounting cylinder 11 fixed on the rotating shaft 5 and perpendicular to the rotating shaft 5, and a telescopic rod 12 slidably fitted with the mounting cylinder 11, the head end of the telescopic rod 12 is fixed to a round table 14 slidably provided inside the mounting cylinder 11, and the limiting wheel 13 is rotatably installed on the tail end of the telescopic rod 12. A first cylindrical spring 15 is also disposed in the installation tube 11 . The first cylindrical spring 15 is sleeved on the outer circumference of the telescopic rod 12 , and one end of the first cylindrical spring 15 is connected to the truncated table 14 , and the other end of the first cylindrical spring 15 is connected to the inner wall of the installation tube 11 .

[0031] Attach Figure 5 Taking the shown state as an example, the multiple limiting wheels 13 are respectively located in the multiple limiting recesses 1601. Whenever the ratchet 7 drives the rotating shaft 5 to rotate, the limiting wheel 13 will be disengaged from the limiting recess 1601 and roll to the outer wall of the limiting ring body 16. The telescopic rod 12 slides toward the outside of the mounting tube 11, and the first columnar spring 15 is compressed. After the rotating shaft 5 has completed its rotation, the limiting wheel 13 rolls into the adjacent limiting recess 1601. In this regard, under the elastic action of the first columnar spring 15, the limiting wheel 13 can be firmly stuck in the limiting recess 1601, which stabilizes the state of the multiple engraved rollers 2 after completing the position change.

[0032] Please refer again Figure 6 , Figure 8 as well as Fig.10 The hydraulic drive mechanism includes a double-headed hydraulic cylinder 25 installed in the frame 1 and a driving plate 24 fixedly installed at 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. The driving plate 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 24 away from the double-headed hydraulic cylinder 25, and the roller 22 cooperates with the triangular block 21.

[0033] Attach Figure 6Taking the state shown as an example, the movable end of the double-headed hydraulic cylinder 25 contracts, which will drive the driving plate 24 to slide on the rotating shaft 5 away from the mounting seat 4, 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 on the guide arm group 6 away from the rotating shaft 5, and the second cylindrical spring 20 is compressed until the engraved roller 2 and the smooth roller 3 act on the cloth and apply the pressure required for rolling the pattern; it is necessary to change When rolling the pattern, the movable end of the double-headed hydraulic cylinder 25 is extended, and the driving plate 24 slides on the rotating shaft 5 toward the mounting seat 4, and the roller 22 gradually moves away from the triangular block 21, so that the second cylindrical spring 20 rebounds, so that the engraved roller 2 and the smooth roller 3 located in the rolling position move away from the cloth. 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 causes the ratchet wheel 7 to rotate, so that the rotating shaft 5 can drive the engraved roller 2 to make a circular motion, and multiple engraved rollers 2 change their positions in the circumferential direction to realize the switching function of the rolled pattern.

[0034] As an embodiment of the present invention, a non-woven fabric hot rolling method is also proposed, which adopts the hot rolling device; 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 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 the rolling pattern needs to be changed, the hydraulic drive mechanism first prompts the engraved roller 2 and the smooth roller 3 to move away from the cloth, and then prompts the rotary drive mechanism to be triggered, and the rotary drive mechanism drives multiple engraved rollers 2 and the smooth roller 3 to rotate in a circle, so that the engraved rollers 2 and the smooth roller 3 with different designs are switched to the rolling position, thereby changing the rolling pattern of the cloth.

[0035] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0036] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes 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 structures 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 cause 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.

2. A non-woven fabric hot rolling device capable of switching rolling patterns online according to claim 1, characterized in that: The rotary drive mechanism comprises a rotating shaft (5) rotatably mounted on the mounting seat (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 of the rotating shaft (5); and the engraved roller (2) is movable along the length direction of the guide arm groups (6).

3. A non-woven fabric hot rolling device capable of switching rolling patterns online according to claim 2, characterized in that: One end of the rotating shaft (5) away from the guide arm group (6) is connected to the hydraulic drive mechanism via 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.

4. A non-woven fabric hot rolling device capable of switching rolling patterns online according to claim 3, characterized in that: The movable displacement assembly comprises a mounting block (17) slidably mounted on the guide arm assembly (6); the engraved roller (2) is rotatably mounted on the mounting block (17); a triangular block (21) is fixedly mounted on one side of the mounting block (17) facing the mounting seat (4); an inclined surface is provided on the triangular block (21); the inclined surface cooperates with the hydraulic drive mechanism and is used to cooperate 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 arranged on the guide arm assembly (6).

5. A non-woven fabric hot rolling device capable of switching rolling patterns online according to claim 4, characterized in that: A connecting plate (18) is fixed to the guide arm group (6), and the elastic support member comprises a guide column (19) fixed to the connecting plate (18) and a second column spring (20) sleeved on the outer periphery 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 column spring (20) are respectively connected to the lug (1701) and the connecting plate (18).

6. A non-woven fabric hot rolling device capable of switching rolling patterns online according to claim 5, characterized in that: 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.

7. The nonwoven fabric hot rolling device capable of switching rolling patterns online according to claim 2, 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.

8. The nonwoven fabric hot rolling device capable of switching rolling patterns online according to claim 7, 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 sleeved with the mounting tube (11); the head end of the telescopic rod (12) is fixed to a round table (14) slidably arranged inside the mounting tube (11); the limiting wheel (13) is rotatably mounted on the tail end of the telescopic rod (12); wherein a first cylindrical spring (15) is further arranged inside the mounting tube (11); the first cylindrical spring (15) is sleeved on the outer circumference of the telescopic rod (12), one end of the first cylindrical spring is connected to the round table (14), and the other end is connected to the inner wall of the mounting tube (11).

9. The nonwoven fabric hot rolling device capable of switching rolling patterns online according to claim 6, 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).

10. A nonwoven fabric hot rolling method, using the 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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