Tearable towel roll and processing equipment and method thereof

Abstract

The application relates to a tearable towel roll and a processing device and method thereof, and belongs to the field of daily necessities manufacturing. The tearable towel roll comprises a strip-shaped base cloth in a roll shape, an easy-tear line is arranged along the width direction of the base cloth, the easy-tear line is provided with a plurality of strip-shaped separation holes arranged obliquely along the length direction, and the two sides of the easy-tear line are provided with edge areas with a thickness higher than that of other positions. The processing device of the tearable towel roll comprises a processing table, a unwinding mechanism, a winding mechanism, an ultrasonic hot melting head, an upper pressing strip connected through downward pressing driving, a lower pressing strip on the surface of the processing table, and a protruding hole forming part on the bottom surface of the upper pressing strip. The processing method of the tearable towel roll comprises the steps of unwinding, hot melting, downward pressing and hole forming, extrusion cooling and the like to process the easy-tear line and form a roll. The application can realize easy tearing of the tearable towel roll, guarantee the flexibility of the torn edge, and realize efficient processing and production of the tearable towel roll.

Description

Technical Field

[0001] This application relates to the textile field, and in particular to a tearable towel roll and its processing equipment and method. Background Technology

[0002] In the textile industry, the emergence of tearable towel rolls has greatly facilitated people's lives. These wrapped disposable towel rolls, with tear lines between adjacent towels, allow users to take towels one by one along the lines as needed. They are widely used in hotels, restaurants, public places, and many other scenarios, meeting people's needs for hygiene and convenience. With the improvement of people's living standards and changes in consumption concepts, higher demands are being placed on the quality and user experience of tearable towel rolls. At the same time, the textile industry is constantly pursuing technological innovation and is committed to developing higher-quality and more environmentally friendly products. As an important category within this industry, tearable towel rolls have received widespread attention for their technological development. Related companies are continuously investing in research and development resources, promoting advancements in materials and processing technology to adapt to the diversified needs of the market.

[0003] Chinese Patent CN115444300A discloses a tearable towel roll, its processing equipment, and production method. The roll comprises a towel roll made of polyester filament or polyester-nylon composite filament. The width of the towel roll is equal to the width or length of the towel itself. A tear line is heat-fused parallel to the radial direction of the towel roll; the tear line is a thin film layer formed by pressing after heat fusion. The patent also discloses processing equipment for the tearable towel roll, including a towel slitting machine. The input or output end of the slitting machine has a first transverse track and a second transverse track. An ultrasonic heat-fusion head slides on the first transverse track, and a roller that cooperates with the ultrasonic heat-fusion head to press out the tear line slides on the second transverse track. The contact surface width between the roller and the towel fabric is between 1mm and 5mm, and the ultrasonic heat-fusion head has a power of 2200W or higher. This method uses melted polyester towel to press into a thin film layer. The tearing of the tear line is achieved by utilizing the brittleness of the PET film after preheating. Furthermore, by pressing the film layer, the molten material is piled up on both sides of the film layer to form the towel roll edge, further reinforcing the towel edge and improving the tearing effect.

[0004] The aforementioned technologies have the following drawbacks: during the pressing of the easy-tear line of the film, the material is piled up on both sides to form a sealed edge. Although this can strengthen the edge of the towel, the straight and uniformly thickened sealing edge will result in poor flexibility of the towel edge, so it needs to be improved. Summary of the Invention

[0005] To improve edge flexibility, this application provides a tearable towel roll and its processing equipment and method.

[0006] A tearable towel roll includes a rolled strip of base fabric. The base fabric has an easy-tear line along its width direction. The easy-tear line has a plurality of separation holes along its length direction. The separation holes are strip-shaped holes and are inclined along their length direction to the length direction of the easy-tear line. Sealing areas are provided on both sides of the easy-tear line in the direction perpendicular to the separation holes. The thickness of the sealing areas is higher than the thickness of the other parts of the easy-tear line.

[0007] By adopting the above technical solution, in the actual processing, the upper and lower pressure strips are used to press the easy-tear line in the hot-melt state. The upper pressure strip has a hole-forming component. When forming the separation hole, the hole-forming component locally squeezes the easy-tear line in the hot-melt state, thereby pushing the material resources that should be allocated at the separation hole to both sides perpendicular to the separation hole, and ultimately forming a sealing area in the area perpendicular to both sides of the separation hole. Furthermore, since several separation holes are evenly distributed and parallel to each other along the length of the easy-tear line, several evenly distributed sealing areas are automatically formed on both sides of the easy-tear line. The thickness of the sealing area is higher than that of other positions, so the overall edge of the easy-tear line is undulating and wavy. When adjacent towels are finally separated along the easy-tear line, a preliminary serrated edge will be formed under the action of several separation holes. Secondly, the wavy thickness of the sealing area further enhances the unevenness of the edge. Therefore, the towel edge of this application has better flexibility.

[0008] Preferably, the thickness of the sealing area increases as the distance between it and the separation hole decreases.

[0009] By adopting the above technical solution, during the production process, the material resources that should have been allocated at the separation hole are pushed to both sides perpendicular to the separation hole by the extrusion of the hole-forming part. Since the width of the tear line is fixed and the separation hole is set at an inclination, the material resources per unit area of ​​the sealing area closer to the end of the hole-forming part are more abundant. Therefore, the thickness of the sealing area formed in this area is greater, thus naturally forming an "undulating" state in the sealing area, thereby further improving the flexibility of the edge of the individual towel after tearing.

[0010] A processing device for tearable towel rolls includes a processing table and unwinding and rewinding mechanisms on both sides of the processing table. An ultrasonic heat-melting head is provided above the processing table. An upper pressure bar is also connected above the processing table via a downward pressure drive. The downward pressure drive is used to drive the upper pressure bar to rise and fall. The surface of the processing table is provided with the lower pressure bar, and the bottom surface of the upper pressure bar is provided with a protruding hole.

[0011] By adopting the above technical solution, in the actual processing, the strip-shaped base fabric is unwound by the unwinding mechanism. Then, an ultrasonic hot-melt head is used to process the lower pressure strip to create a preliminary heat-melted easy-tear line. Subsequently, the upper pressure strip drives the perforating component to press down. As the perforating component approaches and finally abuts the lower pressure strip, the material resources originally located at the separation hole are pushed to both sides. Finally, under the squeezing and cooling action of the upper and lower pressure strips, a thicker sealing area is formed, thus forming the final easy-tear line with separation holes and sealing area. Subsequently, through the cooperation of the unwinding and rewinding mechanisms, the processing of the easy-tear line of the entire base fabric and the final roll formation can be achieved.

[0012] Preferably, the surface of the lower pressure bar is provided with a floating groove, a floating plate is movably connected in the floating groove, and a floating elastic element is connected between the bottom of the floating groove and the floating plate.

[0013] By adopting the above technical solution, the formation of the edge sealing area can be automatically achieved using a floating plate in a movable state. Specifically, during the compression process between the upper and lower pressure strips, the minimum distance between the bottom wall of the upper pressure strip and the top of the lower pressure strip is fixed. That is, when the perforated part abuts against the lower pressure strip, the upper limit of the thickness of the tear line, excluding the edge sealing area, is fixed. Therefore, this application uses a sinking floating trough. As the perforated part approaches and finally abuts against the lower pressure strip, it pushes the material resources originally located at the separation hole to flow to both sides. When the space between the upper and lower pressure strips is filled with material, this material resource will overcome the thrust of the floating elastic element and push the floating plate downwards, thereby achieving automatic downward movement of the floating plate to form the edge sealing area. After processing is completed, the upper pressure strip moves upwards, and the edge sealing area, after cooling and forming, is conveyed backwards along with the base fabric. Subsequently, the floating plate recovers its deformation under the action of the floating elastic element, ready for the next processing. Overall, this improves the convenience of edge sealing area processing. Furthermore, during the actual extrusion process of the perforated part, the material pressure is greater in areas where the material resources are more concentrated (closer to the end of the perforated part). Therefore, the floating plate sinks more deeply in these areas, which automatically creates a gradient distribution of inconsistent thickness along the length of the tear line in the edge sealing area. This also results in varying flexibility in the edge sealing area after forming, ensuring that the edges of individual towels torn off will not have uniform thickness, thus improving edge flexibility.

[0014] Preferably, a spring is provided between the float plate and the inner wall of the trough.

[0015] By adopting the above technical solution, the float plate is connected by a spring. In the actual installation state, one side of the float plate is supported by the spring. That is, the sinking freedom of the side closer to the spring is less than that of the side farther away from the spring. Therefore, the thickness of the final edge sealing area also varies in gradient along the width of the tear line, and the area closer to the individual towel is thicker. This makes the towel less likely to be damaged during individual tearing. In addition, it also makes the edge of the towel thinner and more flexible after tearing.

[0016] Preferably, the top wall of the lower pressure strip is provided with a clearance hole for the bottom end of the hole-forming component to be inserted. The lower pressure strip is also provided with a sliding hole, which is connected to the clearance hole. A sliding plate is slidably disposed inside the sliding hole and is provided with an adjustment drive for driving the sliding plate to slide. The sliding plate blocks the bottom of the clearance hole. The sliding plate has a waste discharge hole. The lower pressure strip is also provided with a waste discharge channel. The sliding plate blocks the top of the waste discharge channel. The waste discharge channel is provided with a negative pressure mechanism connected to it and used to maintain the waste discharge channel in a negative pressure state.

[0017] By adopting the above technical solution, during the forming process of the separation hole, the bottom of the hole-forming part can extend into the relief hole. In this embodiment, the relief hole and the separation hole are set to an adaptive state, which can make the edge regularity of the finally formed separation hole better and less prone to forming a film that blocks the hole. However, a small amount of material will enter the relief hole. Therefore, this application provides the above-mentioned mechanism. When a small amount of material enters the relief hole, after the easy-tear line cools and forms, the sliding plate is driven by the adjustment drive to slide, so that the sliding plate no longer blocks the relief hole and the waste discharge channel, and the waste discharge hole connects the relief hole and the waste discharge channel. At this time, the negative pressure inside the waste discharge channel will instantly suck up the small amount of residual material at the relief hole, and finally enter the waste discharge channel through the waste discharge hole. In addition, the sliding plate is reset by the adjustment drive to restore the state of the sliding plate blocking the relief hole and the waste discharge channel, so that the hole-forming part can enter the relief hole during the next easy-tear line processing.

[0018] Preferably, the slide plate is provided with a pre-top hole, a pre-top block is slidably disposed inside the pre-top hole, and a pre-top elastic element for pushing the top of the pre-top block out of the clearance hole is provided between the bottom of the pre-top block and the inner wall of the pre-top hole.

[0019] By adopting the above technical solution, in the initial state, the pre-elevating elastic member pushes the top of the pre-elevating block out of the clearance hole. During the separation hole forming process, the hole-forming part first abuts against the pre-elevating block, and as the hole-forming part continues to descend, it must first overcome the upward force of the pre-elevating elastic member. Therefore, during this process, the hole-forming part can push the material originally located at the separation hole toward both sides of the separation hole earlier. When the hole-forming part officially enters the clearance hole, very little material has been brought into the clearance hole, thus reducing material waste during the hole-forming process.

[0020] Preferably, the hole-forming component is a bent flexible elastic sheet with the tip of the bend facing the lower pressure strip.

[0021] By adopting the above technical solution, during the extrusion of the pressure bar by the perforating part, the bending point of the flexible spring sheet deforms with the change in the degree of contact. The initial state of the bending point of the flexible spring sheet is, for example, "U" shape. As the degree of contact increases, it can gradually change to, for example, "U" shape. That is, during the contact process, the contact relationship between the perforating part and the pressure bar gradually changes from point contact to surface contact, which allows the material to be pushed to both sides more comprehensively and utilized more fully. This reduces the problem of material retention and waste at the center of the contact surface due to unevenness or other reasons caused by direct surface contact.

[0022] Preferably, the bottom wall of the upper pressure strip is provided with an inner support hole, and an inner support elastic block is slidably disposed in the inner support hole. The inner support elastic block extends out of the inner support hole and is adapted to support the interior of the hole-forming component. An inner support elastic element for pushing the inner support elastic block outward is disposed between the inner wall of the inner support hole and the inner support elastic block.

[0023] By adopting the above technical solution, the inner support elastic element can push the inner support elastic block toward the inside of the hole-forming part, so that the inside of the hole-forming part is kept filled with material. On the one hand, it can reduce the amount of material entering the inside of the hole-forming part, and on the other hand, it can also enhance the internal elastic support during the deformation of the hole-forming part, so as to promote the recovery of the hole-forming part from deformation.

[0024] A method for processing a tearable towel roll involves unwinding a strip of base fabric via an unwinding mechanism. An ultrasonic heat-sealing head then processes a preliminary heat-sealed tear line at the lower pressure strip. Subsequently, an upper pressure strip drives a perforating component downwards. As the perforating component approaches and ultimately contacts the lower pressure strip, it pushes the material originally located at the separation hole to both sides. Finally, under the compression and cooling action of the upper and lower pressure strips, a thicker sealing area is formed, resulting in the final tearable line with separation holes and a sealing area. Through the cooperation of the unwinding and rewinding mechanisms, the processing of the tearable line on the entire base fabric and the final roll formation can be achieved.

[0025] By adopting the above technical solution, the entire base fabric easy-tear line processing and final roll formation are realized, and the material at the separation hole flows to both sides to form a thicker sealing area, so that the easy-tear line can automatically have separation holes and sealing areas in one processing.

[0026] In summary, this application includes at least one of the following beneficial technical effects:

[0027] 1. The easy-tear line has a separation hole and a sealing area on both sides, which makes the overall edge of the easy-tear line undulate and wavy. When adjacent towels are separated, a serrated edge is formed, which enhances the unevenness of the edge and improves the flexibility of the towel edge.

[0028] 2. The thickness of the sealing area increases as the distance between it and the separation hole decreases, forming an "undulating" state, which further enhances the flexibility of the edge of the individual towel after tearing;

[0029] 3. The processing equipment can push the material at the separation hole to both sides to form a thicker sealing area, realizing the processing and rolling of the entire base fabric easy-tear line. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the tearable towel roll structure in an embodiment of this application;

[0031] Figure 2 This is a structural schematic diagram illustrating two states of the tearable towel roll's tear line in the embodiments of this application;

[0032] Figure 3 This is a structural schematic diagram used in the embodiments of this application to illustrate the change in the thickness of the edge sealing area;

[0033] Figure 4 This is a schematic diagram of the processing equipment in the embodiments of this application;

[0034] Figure 5 This is a schematic diagram illustrating the structure of the processing equipment in the state where the tear line is not heat-fused, as shown in the embodiments of this application;

[0035] Figure 6 This is a schematic diagram illustrating the structure of the processing equipment after the easy-tear line is in a hot-melt state, as shown in the embodiments of this application;

[0036] Figure 7 This is a schematic diagram illustrating the structure of the processing equipment in the state of easy-tear line hole formation in the embodiments of this application;

[0037] Figure 8 This is a structural schematic diagram illustrating the state in which the slide plate slides to the position where the pre-top block is below the clearance hole in the embodiments of this application;

[0038] Figure 9 This is a schematic diagram illustrating the structure of the slide plate in the embodiment of this application, showing the state where the waste discharge hole is located below the clearance hole;

[0039] Figure 10 This is a structural schematic diagram illustrating the contact state between the hole-forming part and the tear-off line in the embodiments of this application;

[0040] Figure 11 This is a structural schematic diagram illustrating the surface contact state between the hole-forming part and the easy-tear line in the embodiments of this application.

[0041] In the picture:

[0042] 1. Base fabric; 11. Tear line; 12. Separation hole; 13. Sealing area;

[0043] 2. Processing table; 21. Unwinding mechanism; 22. Rewinding mechanism; 23. Ultrasonic hot melt head; 24. Upper pressure bar; 25. Lower pressure drive; 26. Lower pressure bar; 260. Clearance hole; 27. Hole forming part;

[0044] 3. Floating plate; 30. Floating trough; 31. Floating elastic element; 32. Button spring;

[0045] 4. Slide plate; 40. Slide hole; 41. Pre-ejection block; 42. Pre-ejection hole; 43. Pre-ejection elastic element; 44. Waste discharge hole; 45. Waste discharge channel;

[0046] 5. Inner support elastic block; 50. Inner support hole; 51. Inner support elastic element. Detailed Implementation

[0047] The technical solutions in the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. The described embodiments are only possible technical implementations of the present invention, but are not limited thereto. Other embodiments obtained by those skilled in the art in conjunction with the embodiments of the present invention without creative effort are also within the protection scope of the present invention.

[0048] This application mainly adopts the setting of easy-tear lines with separation holes and edge sealing areas, which achieves the effect of improving the edge flexibility of tearable towel rolls. The following is a further detailed description of this application.

[0049] Example

[0050] Reference Figure 1 and Figure 2 The tearable towel roll provided in this application embodiment includes a rolled strip of base fabric 1 and an easy-tear line 11. The easy-tear line 11 is arranged along the width direction of the base fabric 1, and a plurality of separation holes 12 are provided on the easy-tear line 11. Sealing areas 13 are provided on both sides of the easy-tear line 11 in the vertical direction of the separation holes 12. The thickness of the sealing area 13 is higher than the thickness of the other parts of the easy-tear line 11, so that the edge of the easy-tear line 11 is undulating and wavy in the thickness direction, which improves the flexibility of the edge.

[0051] Specifically, the separation hole 12 is a strip-shaped hole, and its length direction is inclined to the length direction of the easy-tear line 11. This structure allows for better guidance of the tearing direction when tearing the towel, reducing tearing deviation. In this embodiment, the separation hole 12 is a rectangular strip-shaped hole. In other embodiments, it can also be a strip-shaped hole of other shapes such as an oval, as long as it can achieve the function of guiding the tearing direction.

[0052] In actual processing, the upper pressure strip 24 and the lower pressure strip 26 are used to press the easy-tear line 11 in the hot-melt state. The upper pressure strip 24 has a hole forming part 27. The hole forming part 27 locally squeezes the easy-tear line 11 in the hot-melt state, pushing the material resources that should be allocated at the separation hole 12 to both sides perpendicular to the separation hole 12, thereby forming the sealing area 13.

[0053] The thickness of the sealing area 13 is greater than the thickness of the rest of the easy-tear line 11 because the material is squeezed to both sides perpendicular to the separation hole 12 when the separation hole 12 is formed. Furthermore, since the separation holes 12 are evenly distributed and parallel to each other along the length of the easy-tear line 11, several sealing areas 13 are automatically formed on both sides of the easy-tear line 11 during the hole-forming process. The sealing area 13 prevents damage to individual towels when adjacent towels are separated along the easy-tear line 11, and the inclined separation holes 12 result in an uneven edge on the final towel, thus improving edge flexibility.

[0054] Reference Figure 2 and Figure 3 Furthermore, the thickness of the sealing area 13 increases as the distance between it and the separation hole 12 decreases. During the production process, the material resources that should have been allocated at the separation hole 12 are pushed to both sides perpendicular to the separation hole 12 by the extrusion of the hole forming part 27. Since the width of the tear line 11 is fixed and the separation hole 12 is inclined, the material resources per unit area of ​​the sealing area 13 closer to the end of the hole forming part 27 are more abundant. Therefore, the thickness of the sealing area 13 formed in this area is greater, naturally forming an "undulating" state at the sealing area 13, which further improves the flexibility of the edge of the individual towel after tearing.

[0055] The implementation principle of this embodiment is as follows: by setting inclined separation holes 12 on the tear line 11, and forming sealing areas 13 on both sides of the separation holes 12 in the vertical direction, and the thickness of the sealing areas 13 is higher than the rest of the tear line 11, the edge of the tear line 11 is wavy. When adjacent towels are separated along the tear line 11, the resulting towel edge is uneven, greatly improving the edge flexibility. Compared with the straight and uniformly thickened sealing edge in the prior art, the design of this invention is more in line with human body usage needs, bringing a better user experience, and is an important improvement over existing tearable towel roll technology.

[0056] Reference Figure 4 This embodiment also provides a processing device for tearable towel rolls, which includes a processing table 2, an unwinding mechanism 21, a winding mechanism 22, an ultrasonic hot melt head 23, an upper pressure bar 24, a lower pressure drive 25, a lower pressure bar 26, and a hole forming part 27.

[0057] The processing equipment in this embodiment can effectively process the easy-tear line 11 with separation hole 12 and sealing area 13 through the coordinated work of each component, thereby improving the flexibility of the edge of the tearable towel roll.

[0058] Specifically, the processing table 2 is the basic support component of the entire processing equipment, providing a platform for the installation and operation of other components.

[0059] The unwinding mechanism 21 and the winding mechanism 22 are located on both sides of the processing table 2. The unwinding mechanism 21 is used to unwind the strip-shaped base fabric 1, and the winding mechanism 22 is used to collect the processed base fabric 1 into a roll. The unwinding mechanism 21 can be a roller type, and the base fabric 1 is unwound by driving the roller to rotate through a motor; the winding mechanism 22 can also be a roller type, and the processed base fabric 1 is wound up by driving the roller to rotate through a motor.

[0060] The ultrasonic heat-melting head 23 is positioned above the processing table 2 and is tilted. It is used to heat-melt the base fabric 1 at the lower pressure strip 26, so that the base fabric 1 is in a state suitable for pressing the easy-tear line 11. The ultrasonic heat-melting head 23 can be a common model on the market, and its power must be sufficient to heat-melt the base fabric 1.

[0061] The upper pressure bar 24 is connected above the processing table 2 via a lower pressure drive 25, which drives the upper pressure bar 24 to rise and fall. The lower pressure drive 25 can be hydraulically driven or electrically driven, as long as it can achieve stable rising and falling of the upper pressure bar 24. The bottom surface of the upper pressure bar 24 is provided with a protruding hole-forming part 27. When processing the easy-tear line 11, the lower pressure drive 25 drives the upper pressure bar 24 to fall, and the hole-forming part 27 cooperates with the lower pressure bar 26 to press the easy-tear line 11 in the hot-melt state.

[0062] The lower pressure bar 26 is set on the surface of the processing table 2 and cooperates with the upper pressure bar 24 to process the separation hole 12.

[0063] The strip-shaped base fabric 1 is released by the unwinding mechanism. The ultrasonic hot-melt head 23 heat-melts the base fabric 1 at the lower pressure strip 26. The downward pressure drive 25 drives the upper pressure strip 24 to descend. The perforating part 27 on the upper pressure strip 24 cooperates with the lower pressure strip 26 to press the easy-tear line 11 in the heat-melted state, forming a separation hole 12 and an edge sealing area 13. Finally, the processed base fabric 1 is collected into a roll by the winding mechanism 22. The components work closely together in the entire processing, effectively improving the flexibility of the edge of the tearable towel roll and solving the problem of poor edge flexibility in the prior art.

[0064] Reference Figure 5The lower pressure strip 26 is embedded in the surface of the processing table 2 with its top flush. The top wall of the lower pressure strip 26 has clearance holes 260 for the bottom end of the forming component 27 to be inserted, improving the edge regularity of the forming of the separation hole 12. Both sides of the lower pressure strip 26 have sunken floating grooves 30, with floating plates 3 movably connected within the floating grooves 30. A floating elastic element 31 connects the bottom of the floating grooves 30 and the floating plates 3. During the formation of the sealing area 13, when the space between the upper pressure strip 24 and the lower pressure strip 26 is filled with material, the material will overcome the thrust of the floating elastic element 31, pushing the floating plate 3 downwards, thus automatically lowering the floating plate 3 to form the sealing area 13. After processing, the upper pressure strip 24 moves upwards, and after the sealing area 13 cools and forms, it is conveyed backwards with the base fabric 1. The floating plate 3 recovers its deformation under the action of the floating elastic element 31, ready for the next processing. The floating elastic element 31 can be a spring or a rubber elastomer, etc.

[0065] A spring 32 is provided between the float plate 3 and the inner wall of the float trough 30. The float plate 3 is movably connected by the spring 32. In the actual installation state, the float plate 3 is only supported by the spring 32 on one side. Therefore, in the actual production and processing state, the sinking freedom of the side closer to the spring 32 is less than that of the side farther away from the spring 32. As a result, the thickness of the final formed edge sealing area 13 also has a gradient change along the width direction of the tear line 11, and the thickness is greater closer to the individual towel. This makes the towel less likely to be damaged during individual tearing. In addition, it also makes the outermost edge of the tear line 11 after the towel is torn thinner, thus improving its flexibility.

[0066] The top wall of the pressure strip 26 is longitudinally provided with a clearance hole 260 for the bottom end of the forming member 27 to be inserted. The interior of the pressure strip 26 is transversely provided with a sliding hole 40, which communicates with the clearance hole 260. The slide plate 4 is provided with a pre-ejection hole 42, and a pre-ejection block 41 is slidably disposed inside the pre-ejection hole 42. A pre-ejection elastic member 43 is provided between the bottom of the pre-ejection block 41 and the inner wall of the pre-ejection hole 42 to push the top end of the pre-ejection block 41 out of the clearance hole 260. In the initial state, for example... Figure 5 and Figure 6 The pre-ejector elastic element 43 pushes the top of the pre-ejector block 41 out of the clearance hole 260, and the pre-ejector block 41 pushes the easy-tear line 11 up a certain height. During the forming process of the separation hole 12, for example... Figure 7 The forming element 27 first abuts against the pre-ejector block 41. As the forming element 27 continues to descend, it must first overcome the upward force of the pre-ejector elastic element 43. Therefore, during this process, the forming element 27 can push the material originally located at the separation hole 12 toward both sides of the separation hole 12 earlier. When the forming element 27 officially enters the clearance hole 260, very little material has been brought into the clearance hole 260. Thus, this structure can reduce material waste during the forming process. The pre-ejector elastic element 43 can be a spring, etc.

[0067] Reference Figure 8 A sliding plate 4 is slidably disposed inside the sliding hole 40, and an adjustment drive (not shown in the figure) is provided for driving the sliding plate 4 to slide. When the pre-top block 41 is located below the clearance hole 260, it can block the bottom of the clearance hole 260. The sliding plate 4 also has a waste discharge hole 44 that runs vertically through the pre-top block 41. In addition, a waste discharge channel 45 is provided inside the lower pressure strip 26 below the clearance hole 260. When the pre-top block 41 is located below the clearance hole 260, the sliding plate 4 blocks the top of the waste discharge channel 45. The waste discharge channel 45 is provided with a negative pressure mechanism (not shown in the figure) that is connected to it and used to maintain the waste discharge channel 45 in a negative pressure state. During the forming process of the separation hole 12, the bottom of the hole-forming part 27 can extend into the relief hole 260. When a small amount of material enters the relief hole 260, after the easy-tear line 11 cools and forms, the sliding plate 4 is driven by the adjustment drive to slide, so that the sliding plate 4 no longer blocks the relief hole 260 and the waste discharge channel 45, and the waste discharge hole 44 connects the relief hole 260 and the waste discharge channel 45 (see reference). Figure 9 At this point, the negative pressure inside the waste discharge channel 45 will instantly draw in a small amount of residual material at the clearance hole 260, and finally enter the waste discharge channel 45 through the waste discharge hole 44. The adjustment drive can be an electric push rod or a cylinder, etc.

[0068] The principle is as follows: the automatic formation of the edge-sealing area 13 is achieved through the design of structures such as the floating groove 30, floating plate 3, and floating elastic element 31, improving the convenience of edge-sealing area 13 processing; the setting of the spring 32 makes the thickness of the edge-sealing area 13 have a gradient change in the width direction, further improving the flexibility of the towel edge; the setting of structures such as the clearance hole 260, sliding plate 4, and waste discharge channel 45 solves the problem of material residue during the forming process of the separation hole 12; the setting of the pre-top block 41 and pre-top elastic element 43 reduces the waste of material resources during the hole forming process. Overall, these improvements further enhance the processing quality and efficiency of tearable towel rolls.

[0069] Reference Figure 10 and Figure 11 The perforating element 27 is a bent flexible elastic sheet with the pointed end of the bend facing the lower pressure strip 26. In this embodiment, the perforating element 27 is a metal elastic sheet. During the process of the perforating element 27 pressing the lower pressure strip 26, the bend of the flexible elastic sheet will deform as the degree of contact changes. For example, initially it is approximately "U" shaped, and as the degree of contact increases, it can gradually become approximately "U" shaped. That is, during the contact process, the contact relationship between the perforating element 27 and the lower pressure strip 26 gradually changes from point contact to surface contact, which allows the material to be pushed to both sides more comprehensively and utilized more fully. This reduces the problem of material retention and waste at the center of the contact surface due to unevenness or other reasons caused by direct surface contact.

[0070] In addition, the bottom wall of the upper pressure strip 24 is provided with an inner support hole 50, and an inner support elastic block 5 is slidably disposed within the inner support hole 50. The inner support elastic block 5 partially extends out of the inner support hole 50 and is adapted to support the interior of the hole-forming part 27. An inner support elastic element 51 is provided between the inner wall of the inner support hole 50 and the inner support elastic block 5 for pushing the inner support elastic block 5 outward. The inner support elastic element 51 can be a spring, and the inner support elastic block 5 can be a rubber block, etc. The inner support elastic element 51 pushes the inner support elastic block 5 toward the interior of the hole-forming part 27, so that the interior of the hole-forming part 27 remains filled with material. On the one hand, it can reduce the amount of material entering the interior of the hole-forming part 27 and avoid blockage of the hole-forming part 27; on the other hand, it can also enhance the internal elastic support during the deformation of the hole-forming part 27, so as to promote the recovery of the hole-forming part 27 from deformation and improve the service life and processing effect of the hole-forming part 27.

[0071] The principle is as follows: by setting the inner support hole 50, the inner support elastic block 5 and the inner support elastic element 51, the structure of the upper pressure strip 24 is optimized, the material entering the hole forming part 27 is reduced, the elastic support of the hole forming part 27 is improved, thereby ensuring the forming quality of the easy-tear line 11 and the separation hole 12 during the processing of the tearable towel roll, and further improving the performance of the entire processing equipment.

[0072] This application also provides a method for processing a tearable towel roll, including the following steps:

[0073] S1, the strip-shaped base fabric 1 is unwound via the unwinding mechanism 21. The unwinding mechanism 21 smoothly unwinds the rolled base fabric 1, providing a continuous supply of base fabric 1 for subsequent processing. The unwinding mechanism 21 can be a motor-driven reel, and the unwinding speed is adjusted by controlling the motor's rotation speed. (Ref) Figure 4 and Figure 5 )

[0074] S2, the ultrasonic hot-melt head 23 is used to heat-melt the base fabric 1 at the lower pressure strip 26, making the base fabric 1 suitable for pressing the easy-tear line 11. The ultrasonic hot-melt head 23 must have sufficient power to ensure that the base fabric 1 can be heat-melted. In this process, the heat-melting time and temperature must be controlled to avoid over-melting or under-melting. These specific process parameters are adjusted as needed according to the actual situation, combined with materials, thickness, ambient temperature, etc., and therefore will not be elaborated further. (Refer to...) Figure 5 and Figure 6 )

[0075] S3, the upper pressure bar 24 drives the hole-forming part 27 to press down, and the hole-forming part 27 approaches and finally abuts against the lower pressure bar 26, pressing the easy-tear line 11 in the hot-melt state. During this process, the hole-forming part 27 locally squeezes the easy-tear line 11 in the hot-melt state, pushing the material resources that should be allocated at the separation hole 12 to both sides perpendicular to the separation hole 12, pushing the material resources originally located at the separation hole 12 to both sides, and finally forming a thicker sealing area 13 under the squeezing and cooling action of the upper pressure bar 24 and the lower pressure bar 26, thus forming the final easy-tear line 11 with the separation hole 12 and the sealing area 13. The downward pressure drive 25 can be hydraulically driven or electrically driven to ensure the stable lifting and lowering of the upper pressure bar 24. (Refer to...) Figure 7 )

[0076] S4, the processed base fabric 1 is rolled up and collected by the winding mechanism 22. The winding mechanism 22 can neatly wind up the processed tearable towel roll for easy storage and transportation. The winding mechanism 22 can also be a motor-driven roller, and the winding speed can be adjusted according to the unwinding speed to ensure the tension of the base fabric 1 is stable.

[0077] The principle is as follows: through a series of steps such as unwinding, heat melting, pressing, and rewinding, the automated processing of tearable towel rolls is achieved. The entire processing method is clear, and each step works closely together, effectively improving the processing efficiency and quality of tearable towel rolls. In particular, by forming the separation hole 12 and the sealing area 13, the problem of poor edge flexibility in the existing technology is solved, thus improving the user experience of tearable towel rolls.

[0078] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A processing device for tearable towel roll easy-tear threads, comprising a processing table (2) and unwinding mechanisms (21) and rewinding mechanisms (22) on both sides of the processing table (2), wherein an ultrasonic heat-melting head (23) is provided above the processing table (2), characterized in that: Above the processing table (2), an upper pressure bar (24) is connected via a downward pressure drive (25). The downward pressure drive (25) is used to drive the upper pressure bar (24) to rise and fall. The surface of the processing table (2) is provided with a downward pressure bar (26), and the bottom surface of the upper pressure bar (24) is provided with a protruding hole forming part (27). The surface of the lower pressure bar (26) is provided with a floating groove (30), a floating plate (3) is movably connected in the floating groove (30), and a floating elastic element (31) is connected between the bottom of the floating groove (30) and the floating plate (3); A torsion spring (32) is provided between the float plate (3) and the inner wall of the float trough (30); The top wall of the lower pressure bar (26) is provided with a clearance hole (260) for the bottom end of the hole forming part (27) to be inserted. The lower pressure bar (26) is also provided with a sliding hole (40). The sliding hole (40) is connected to the clearance hole (260). A sliding plate (4) is slidably provided inside the sliding hole (40) and is provided with an adjustment drive for driving the sliding plate (4) to slide. The sliding plate (4) blocks the bottom of the clearance hole (260). The sliding plate (4) has a waste discharge hole (44). The lower pressure bar (26) is also provided with a waste discharge channel (45). The sliding plate (4) blocks the top of the waste discharge channel (45). The waste discharge channel (45) is provided with a negative pressure mechanism connected to it and used to maintain the waste discharge channel (45) in a negative pressure state. The slide plate (4) is provided with a pre-top hole (42), and a pre-top block (41) is slidably provided inside the pre-top hole (42). A pre-top elastic member (43) for pushing the top of the pre-top block (41) out of the clearance hole (260) is provided between the bottom of the pre-top block (41) and the inner wall of the pre-top hole (42). The hole-forming part (27) is a bent flexible elastic sheet with the tip of the bend facing the lower pressure strip (26); The bottom wall of the upper pressure strip (24) is provided with an inner support hole (50), and an inner support elastic block (5) is slidably provided in the inner support hole (50). The inner support elastic block (5) extends out of the inner support hole (50) and is adapted to support the inside of the hole-forming part (27). An inner support elastic element (51) for pushing the inner support elastic block (5) outward is provided between the inner wall of the inner support hole (50) and the inner support elastic block (5).

2. A method for processing tearable towel roll easy-tear threads using a processing device based on the tearable towel roll easy-tear thread processing equipment of claim 1, characterized in that: The strip-shaped base fabric (1) is unwound by the unwinding mechanism (21), and then the ultrasonic hot melt head (23) is used to process the easy-tear line (11) in the initial hot melt state at the lower pressure bar (26). Then, the upper pressure bar (24) drives the hole forming part (27) to press down. During the process of the hole forming part (27) approaching and finally abutting the lower pressure bar (26), the material resources originally located at the separation hole (12) will be pushed to both sides. Finally, under the squeezing and cooling action of the upper pressure bar (24) and the lower pressure bar (26), a thick sealing area (13) is formed to form the final easy-tear line (11) with the separation hole (12) and the sealing area (13). Through the cooperation of the unwinding mechanism (21) and the winding mechanism (22), the processing of the easy-tear line (11) of the entire base fabric (1) and the final roll can be realized.

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