A multi-stage drying pasting machine

Abstract

The utility model relates to a kind of over-pasting machine of multi-section drying, belong to weaving mark production equipment field, including rack and sequentially arranged feeding mechanism, drying mechanism and discharging mechanism along left-right direction.The drying mechanism contains closed first, second drying box, second drying box is located below first drying box, and they are communicated by first, second connecting port;Inlet is equipped in the left side of first drying box, and outlet is equipped in the right side of second drying box.A plurality of first support rollers are arranged in first drying box along left-right direction, higher second support roller is arranged between adjacent first support rollers, drying pipe is below second support roller, and gas outlet hole is opened in the both sides of drying pipe, first, second support roller is rotatably arranged in first drying box.At least two rotatable heating cylinders are arranged in second drying box along left-right direction.The utility model can reduce the temperature of heating cylinder while ensuring that weaving mark is dried up to standard, can avoid "dye color migration", and improve the quality of weaving mark product.

Description

Technical Field

[0001] This utility model relates to the field of woven label production equipment, and in particular to a sizing machine capable of multi-stage drying. Background Technology

[0002] Woven labels are textile markings used on clothing, home textiles, bags, and other products to indicate brand, size, composition, washing instructions, and other information. They are typically made using woven or knitted processes. In the production process of woven labels, the sizing process is a crucial step. This process involves evenly applying a specific formula of sizing agent (often starch, PVA, or acrylic polymers) to the surface of the yarn and the interfibers of the woven label, ultimately forming a dense protective film on the label surface. This significantly improves the label's stiffness, wrinkle resistance, and abrasion resistance. The formation of this protective film requires drying the woven label. During the drying process, as the moisture gradually evaporates, the sizing agent on the label surface slowly solidifies, eventually forming a stable protective film. Currently, the drying process for woven labels in the industry mostly uses heated rollers. The specific operation process is as follows: the woven label is continuously passed over the surface of the heated roller at a constant speed through a conveyor mechanism. The high temperature generated by the roller quickly dries the woven label with the applied sizing, thus completing the entire drying process. In order to ensure that the sizing can be fully cured and to avoid residual moisture affecting subsequent processes, the temperature of the heated roller is usually controlled at around 130℃. However, a temperature of 130℃ is close to or even reaches the heat stability threshold of commonly used dyes such as disperse dyes and reactive dyes used in woven label dyeing. When the temperature exceeds the threshold, dye molecules are prone to detach from the fiber carrier and diffuse to the surface of the woven label or areas without dye, which is the phenomenon of "dye migration". This will cause uneven color depth on the surface of the woven label, blurred pattern edges, and in severe cases, even color stains, ultimately affecting the appearance quality and product qualification rate of the woven label.

[0003] Based on this, the present invention provides a multi-stage drying sizing machine with multiple drying units. During operation, the woven label passes through each drying unit in sequence, and the moisture in the sizing material can be gradually evaporated in each drying unit, eventually achieving complete solidification. Therefore, the sizing machine of the present invention can complete the drying process of the woven label while significantly reducing the drying temperature, thereby avoiding the phenomenon of "dye migration" and ultimately achieving the purpose of improving the quality of the dried woven label and increasing the product qualification rate. Utility Model Content

[0004] Based on this, the present invention provides a multi-stage drying pulping machine, including a frame, and a feeding mechanism, a drying mechanism, and a discharging mechanism sequentially arranged along the left-right direction on the frame. The drying mechanism includes a first drying chamber fixedly installed on the frame and in a closed shape. A plurality of first support rollers are arranged along the left-right direction inside the first drying chamber. The axes of the first support rollers are arranged along the front-back direction, and a second support roller parallel to the first support roller is arranged between adjacent first support rollers. The horizontal height of the second support roller is higher than that of the first support roller. A drying pipe parallel to the second support roller is also arranged below the second support roller. A plurality of air outlets are opened on both the left and right sides of the drying pipe, and the air outlets are arranged along the front-back direction. The first and second support rollers are rotatably mounted on the side wall of the first drying chamber, and the drying tube is fixedly mounted on the side wall of the first drying chamber. The drying mechanism also includes a second drying chamber fixedly mounted on the frame and in a closed shape. At least two heating rollers are arranged in the second drying chamber along the left-right direction, and the heating rollers are rotatably mounted on the side wall of the second drying chamber. The second drying chamber is located below the first drying chamber, and a second connection port is opened on the right side of the top side wall of the second drying chamber. A first connection port communicating with the second connection port is opened on the right side of the bottom side wall of the first drying chamber. An inlet is also opened on the left side wall of the first drying chamber, and an outlet is also opened on the right side wall of the second drying chamber.

[0005] Furthermore, at least one exhaust window is provided on the top side wall of the first drying chamber.

[0006] Furthermore, a plurality of third support rollers are provided in the second drying chamber along the left-right direction. The axis of the third support rollers is arranged along the front-back direction and is rotatably disposed on the side wall of the second drying chamber, and the horizontal height of the third support rollers is lower than the horizontal height of the heating drum.

[0007] Furthermore, the feeding mechanism includes an unwinding roller, a coating device, and a scraping device arranged sequentially on the frame along the left-right direction; the axis of the unwinding roller is arranged along the front-back direction and is rotatably mounted on the frame; the coating device includes a receiving groove fixedly mounted on the frame and a limiting post disposed in the receiving groove; the scraping device includes a positioning roller and a pressure roller arranged vertically and parallel to the unwinding roller, and both the positioning roller and the pressure roller are rotatably mounted on the frame.

[0008] Furthermore, the limiting post includes two support rods parallel to the unwinding roller, and the two support rods are at the same horizontal height. The bottom of the receiving groove is fixedly provided with a mounting bracket corresponding to the support rods, and the support rods are rotatably mounted on the mounting bracket.

[0009] Furthermore, a receiving tray is provided below the scraping device.

[0010] Furthermore, the feeding mechanism includes a take-up roller rotatably mounted on the frame via a drive device.

[0011] Furthermore, both the first drying oven and the second drying oven have openable and closable door structures on their front side walls, and each door structure has a transparent observation window.

[0012] The principle and effects of this utility model will be further explained below with reference to the above technical solution and the accompanying drawings: Compared to using only heated rollers to dry woven labels, this invention employs a multi-stage drying method. First, most of the moisture in the woven label sizing is removed. Then, heated rollers are used for deep drying to remove any remaining moisture. This method ensures that the dried woven label meets the drying requirements while reducing the heating temperature of the heated rollers, effectively preventing dye migration. Ultimately, this improves the quality of the dried woven label and increases the product qualification rate. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the multi-stage drying pulping mechanism described in an embodiment of the present invention; Figure 2 This is a cross-sectional structural diagram of the multi-stage drying pulping mechanism described in an embodiment of the present invention; Figure 3 This is a schematic diagram of the structure of the limiting post described in an embodiment of the present utility model; Figure 4 This is the conveying path of the woven label in the drying mechanism of this utility model embodiment.

[0014] Figure Labels

[0015] 1-Frame, 2-Feeding mechanism, 21-Unwinding roller, 22-Receiving trough, 221-Mounting frame, 231-Positioning roller, 232-Pressure roller, 24-Receiving tray, 251-Support rod, 31-First drying chamber, 311-Inlet, 312-First support roller, 313-Second support roller, 314-Drying pipe, 3141-Air outlet, 315-Exhaust window, 316-First connection port, 32-Second drying chamber, 321-Outlet, 322-Heating roller, 323-Third support roller, 324-Guide roller, 4-Unloading mechanism, 41-Rewinding roller. Detailed Implementation

[0016] To facilitate understanding by those skilled in the art, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments: like Figure 1-4A multi-stage drying pulping machine includes a frame 1 and a feeding mechanism 2, a drying mechanism, and a discharging mechanism 4 arranged sequentially along the left-right direction on the frame 1. The drying mechanism includes a first drying chamber 31 fixedly mounted on the frame 1 and in a closed shape. A plurality of first support rollers 312 are arranged along the left-right direction inside the first drying chamber 31. The axes of the first support rollers 312 are arranged along the front-back direction, and a second support roller 313 parallel to the first support roller 312 is arranged between adjacent first support rollers 312. The horizontal height of the second support roller 313 is higher than that of the first support roller 312. A drying pipe 314 parallel to the second support roller 313 is also arranged below the second support roller 313. A plurality of air outlets 3141 are opened on both the left and right sides of the drying pipe 314, and the air outlets 3141 are arranged along the front-back direction. The support roller 312 and the second support roller 313 are rotatably mounted on the side wall of the first drying chamber 31, and the drying tube 314 is fixedly mounted on the side wall of the first drying chamber 31. The drying mechanism also includes a second drying chamber 32 fixedly mounted on the frame 1 and in a closed state. At least two heating rollers 322 are arranged in the second drying chamber 32 along the left-right direction. The heating rollers 322 are rotatably mounted on the side wall of the second drying chamber 32. The second drying chamber 32 is located below the first drying chamber 31, and a second connection port is opened on the right side of the top side wall of the second drying chamber 32. A first connection port 316 communicating with the second connection port is opened on the right side of the bottom side wall of the first drying chamber 31. An inlet 311 is also opened on the left side wall of the first drying chamber 31, and an outlet 321 is also opened on the right side wall of the second drying chamber 32.

[0017] In this invention, a sizing machine is used to complete the sizing process of woven labels, uniformly adhering a sizing agent (mostly starch, PVA, or acrylate polymers) of a specific formulation to the yarn surface and fiber gaps of the woven label, forming a stable protective film structure. The feeding mechanism 2 transports the sizing-coated woven label to the drying mechanism, which dries the sizing-coated woven label to solidify the sizing agent, thereby forming a stable protective film on the woven label surface. The unloading mechanism 4 receives the dried woven label.

[0018] In this utility model, the conveying path of the woven label conveyed by the feeding mechanism 2 after entering the first drying box 31 through the inlet 311 is as follows: First, it passes under the first support roller 312 on the left, then passes over the second support roller 313 on the left, then passes under the second support roller 312, then passes over the second support roller 313 on the left, and so on, finally passing through the first connection port 316 of the first drying box 31 and the second connection port of the second drying box 32 to enter the second drying box 32; The path of the woven label in the second drying box 32 is as follows: It passes around each heating roller 322 in a wave-like pattern from right to left, and then leaves the second drying box 32 through the outlet 321 of the second drying box 32 and connects with the unloading mechanism 4.

[0019] In this invention, the front end of the drying pipe 314 inside the first drying chamber 31 is sealed, and its rear end extends backward out of the first drying chamber 31 for connection with a hot air pumping device. Hot air is then blown out through the air outlets 3141 of the drying pipe 314 to dry the woven label. Specifically, the hot air blown out by the drying pipe 314 through the air outlets 3141 on both sides directly blows onto the surface of the woven label on both sides, directly drying the surface. Simultaneously, the hot air blown out by the drying pipe 314 also forms a continuous airflow within the first drying chamber 31, continuously drying other parts of the woven label. Hot air drying is performed. Furthermore, the woven label is wavy inside the first drying chamber 31 under the support of the first support roller 312 and the second support roller 313, which can significantly increase the heated area of ​​the woven label in the first drying chamber 31. Since the woven label needs to repeatedly pass over the first support roller 312 and the second support roller 313, the residence time of the woven label in the first drying chamber 31 will also increase, which will correspondingly increase the drying time of the woven label in the first drying chamber 31. Therefore, the woven label can complete the initial dehydration in the first drying chamber 31, removing most of the moisture from the woven label. The temperature range of the hot air is preferably 80-100℃.

[0020] After the pre-dried woven label enters the second drying chamber 32 through the first connection port 316 and the second connection port, the high-temperature heating roller 322 provides heat through contact conduction, which can deeply dry the sizing material that has completed preliminary dehydration, evaporate the remaining moisture in the sizing material, and solidify it to ultimately form a stable protective film. Since the woven label has undergone preliminary dehydration in the first drying chamber 31, removing most of the moisture, the heating roller 322 only needs to evaporate the remaining moisture in the sizing material. Therefore, the heating roller 322 provides a relatively low temperature to the woven label passing through it, preferably 110-120°C, which can also evaporate the remaining moisture in the woven label, completing the drying process and forming a stable protective film on the surface of the woven label. As can be seen, compared to using only the heating roller 322 to dry the woven label, this utility model, through a multi-stage drying method, can reduce the heating temperature of the heating roller 322 while ensuring that the dried woven label meets the drying requirements. This effectively avoids the phenomenon of "dye migration" and ultimately achieves the goal of improving the quality of the dried woven label and increasing the product qualification rate.

[0021] In one embodiment, at least one exhaust window 315 is provided on the top side wall of the first drying oven 31.

[0022] In this embodiment, the exhaust vent 315 at the top of the first drying chamber 31 is used to promptly discharge the high-temperature water vapor generated in the first drying chamber 31 while the drying pipe 314 is drying the woven label, which can effectively improve the drying effect of the drying pipe 314 on the woven label. In addition, since the second drying chamber 32 is connected to the first connecting port 316 of the first drying chamber 31 through its second connecting port, the high-temperature water vapor generated when the heating roller 322 in the second drying chamber 32 evaporates the remaining moisture in the woven label can also enter the first drying chamber 31 through the first connecting port 316 and the second connecting port, and then overflow through the exhaust vent 315 of the first drying chamber 31, which can effectively improve the drying effect of the heating roller 322 on the woven label.

[0023] In one embodiment, a plurality of third support rollers 323 are also provided in the second drying chamber 32 along the left-right direction. The axis of the third support rollers 323 is arranged along the front-back direction and is rotatably arranged on the side wall of the second drying chamber 32. The horizontal height of the third support rollers 323 is lower than the horizontal height of the heating roller 322.

[0024] In this embodiment, there are three heating rollers 322 in the second drying chamber 32, and the third support roller 323 is located below the heating rollers 322. A guide roller 324 is also provided in the second drying chamber 32. The guide roller 324 is rotatably disposed on the inner side wall of the second drying chamber 32 and located on the right side of the heating rollers 322. After the woven label enters the second drying chamber 32 from the first drying chamber 31, its transportation path is as follows: First, it passes around the guide roller 324 from the lower end of the guide roller 324, then passes around the first heating roller 322 from the upper end of the first heating roller 322 on the right, then passes around the second heating roller 322 from the lower end of the second heating roller 322, then passes around the third heating roller 322 from the upper end of the third heating roller 322, then passes around all the third support rollers 323 from below, and finally leaves the second drying chamber 32 through the outlet 321 of the second drying chamber 32 and connects with the feeding mechanism 4.

[0025] In this embodiment, after the woven label passes by each heating roller 322 in sequence, it will continue to be conveyed along the third support roller 323 arranged from left to right in the second drying box 32. The constant temperature environment formed by the heat dissipation of the heating roller 322 in the second drying box 32 can be used to continue to evaporate the moisture in the woven label, thereby further ensuring that the remaining moisture in the woven label is completely evaporated.

[0026] In one embodiment, the feeding mechanism 2 includes an unwinding roller 21, a slurry coating device, and a scraping device arranged sequentially on the frame 1 along the left-right direction; the axis of the unwinding roller 21 is arranged along the front-back direction and is rotatably mounted on the frame 1; the slurry coating device includes a receiving groove 22 fixedly mounted on the frame 1 and a limiting post disposed in the receiving groove 22; the scraping device includes a positioning roller 231 and a pressure roller 232 arranged vertically and parallel to the unwinding roller 21, and both the positioning roller 231 and the pressure roller 232 are rotatably mounted on the frame 1.

[0027] In this embodiment, the unwinding roller 21 is used to mount the woven label rolls wound together. The conveying path of the woven label in the feeding mechanism 2 is as follows: First, the woven label is drawn out from the woven label roll on the unwinding roller 21, then enters the receiving groove 22, passes under the limiting post, then enters between the positioning roller 231 and the pressure roller 232, and finally passes through the inlet 311 of the first drying box 31 to enter the first drying box 31. The receiving groove 22 is used to hold the paste to be coated on the woven label. When the woven label passes under the limiting post, the paste in the receiving groove 22 will adhere to the woven label. Then, when the woven label passes between the positioning roller 231 and the pressure roller 232, the paste adhering to the woven label will be scraped to a preset thickness under the pressure of the positioning roller 231 and the pressure roller 232.

[0028] In one embodiment, the limiting post includes two support rods 251 parallel to the unwinding roller 21, and the two support rods 251 are located at the same horizontal height. The bottom of the receiving groove 22 is fixedly provided with a mounting bracket 221 corresponding to the support rods 251, and the support rods 251 are rotatably disposed on the mounting bracket 221.

[0029] In this embodiment, the limiting post is a split structure, which is composed of two parallel support rods 251. Compared with the limiting post of the overall structure, when the woven label passes through the limiting post, the area covered by the limiting post is smaller, that is, the contact area with the paste is larger, which allows the paste to be coated onto the woven label more quickly and evenly.

[0030] In one embodiment, a receiving tray 24 is provided below the scraping device.

[0031] In this embodiment, the receiving tray 24 below the scraping device is used to collect the fallen sizing material when the scraping device scrapes off excess sizing material from the woven label, so as to facilitate the recycling of the sizing material.

[0032] In one embodiment, the feeding mechanism 4 includes a take-up roller 41 rotatably mounted on the frame 1 via a drive device.

[0033] In this embodiment, the take-up roller 41 is rotatably mounted on the frame 1 via a drive device, preferably a drive motor, for taking up the dried woven label and providing driving force for conveying the woven label. To ensure smooth movement of the woven label in the sizing machine, one or more sets of conveyor rollers can be installed on the frame 1. Each conveyor roller set includes two conveyor rollers positioned vertically, and the rotation of these rollers provides driving force for conveying the woven label clamped between the two conveyor rollers.

[0034] In one embodiment, the front sidewalls of the first drying oven 31 and the second drying oven 32 are provided with openable and closable door structures, and each door structure is provided with a transparent observation window.

[0035] In this embodiment, the door structure on the front side of the first drying box 31 and the second drying box 32 is used to facilitate the sorting and maintenance of the woven labels and various components inside the first drying box 31 and the second drying box 32. The transparent observation window on the door structure is used to facilitate the observation of the drying status of the woven labels inside the first drying box 31 and the second drying box 32.

[0036] The above embodiments only illustrate several implementation methods of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A multi-stage drying pulping machine, comprising a frame, and a feeding mechanism, a drying mechanism, and a discharging mechanism sequentially arranged along the left-right direction on the frame, characterized in that, The drying mechanism includes a first drying chamber fixedly mounted on the frame and in a closed configuration. Several first support rollers are arranged along the left-right direction inside the first drying chamber. The axes of the first support rollers are arranged along the front-back direction. A second support roller parallel to the first support roller is arranged between adjacent first support rollers, and the horizontal height of the second support roller is higher than that of the first support roller. A drying tube parallel to the second support roller is also arranged below the second support roller. Several air vents are opened on both sides of the drying tube, and the air vents are arranged along the front-back direction. Both the first and second support rollers are rotatably mounted on the side wall of the first drying chamber. The drying tube is fixedly installed on the side wall of the first drying chamber; the drying mechanism also includes a second drying chamber fixedly installed on the frame and in a closed shape, wherein at least two heating rollers are arranged in the second drying chamber along the left-right direction, and the heating rollers are rotatably installed on the side wall of the second drying chamber; the second drying chamber is located below the first drying chamber, and a second connection port is opened on the right side of the top side wall of the second drying chamber, and a first connection port communicating with the second connection port is opened on the right side of the bottom side wall of the first drying chamber; an inlet is also opened on the left side wall of the first drying chamber, and an outlet is also opened on the right side wall of the second drying chamber.

2. The multi-stage drying pulping machine according to claim 1, characterized in that, The top side wall of the first drying chamber has at least one exhaust window.

3. A multi-stage drying pulping machine according to claim 1 or 2, characterized in that, The second drying chamber is also provided with a number of third support rollers along the left-right direction. The axis of the third support rollers is arranged along the front-back direction and is rotatably arranged on the side wall of the second drying chamber. The horizontal height of the third support rollers is lower than the horizontal height of the heating drum.

4. A multi-stage drying pulping machine according to claim 3, characterized in that, The feeding mechanism includes an unwinding roller, a coating device, and a scraping device arranged sequentially on the frame along the left-right direction; the axis of the unwinding roller is arranged along the front-back direction and is rotatably mounted on the frame; the coating device includes a receiving groove fixedly mounted on the frame and a limiting post disposed in the receiving groove; the scraping device includes a positioning roller and a pressure roller arranged vertically and parallel to the unwinding roller, and both the positioning roller and the pressure roller are rotatably mounted on the frame.

5. A multi-stage drying pulping machine according to claim 4, characterized in that, The limiting post includes two support rods parallel to the unwinding roller, and the two support rods are at the same horizontal height. The bottom of the receiving groove is fixedly provided with a mounting bracket corresponding to the support rods, and the support rods are rotatably mounted on the mounting bracket.

6. A multi-stage drying pulping machine according to claim 4, characterized in that, A receiving tray is provided below the scraping device.

7. A multi-stage drying pulping machine according to claim 1, characterized in that, The feeding mechanism includes a take-up roller that is rotatably mounted on the frame via a drive device.

8. A multi-stage drying pulping machine according to claim 1, characterized in that, Both the first drying oven and the second drying oven have openable and closable door structures on their front side walls, and each door structure has a transparent observation window.

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