Film-coated hot melt adhesive cooling equipment

Abstract

The invention relates to the technical field of hot melt adhesive production, and provides film-coated hot melt adhesive cooling equipment which comprises an extrusion device, a heat-seal cutting device and a cooling device, the extrusion device is provided with a forming discharge port, and the forming discharge port is used for being connected with a soluble film in a sleeving mode; the heat sealing and cutting device is arranged on the extrusion device and is used for carrying out heat sealing and cutting on the soluble film filled with the hot melt adhesive; the cooling device comprises a water tank, a sink guide plate and a cooling pipeline, one end of the water tank is located below the forming discharging port, the other end of the water tank is arranged in an n-shaped winding mode, the cooling pipeline is installed at the top of the water tank, and the cooling pipeline is provided with a plurality of liquid spraying nozzles distributed at intervals so that cooling liquid circulating in the cooling pipeline can be sprayed into the water tank through the liquid spraying nozzles; the sink guide plate is installed in the water tank and located between every two adjacent liquid spraying nozzles, and at least part of the sink guide plate is lower than the bottoms of the liquid spraying nozzles. The water tank and the cooling pipeline are arranged in an n-shaped winding mode, the cooling stroke is long, the film-coated hot melt adhesive is pressed into the cooling liquid through the sink guide plate, and the cooling effect is improved.

Description

Technical Field

[0001] This invention relates to the field of hot melt adhesive production technology, and in particular to a film-coated hot melt adhesive cooling device. Background Technology

[0002] Hot melt adhesive is a type of malleable adhesive that is solid at room temperature but melts upon heating, allowing for rapid bonding. In the production process, raw materials are heated to a molten state in a reactor, then extruded through an extrusion device to form blocks, rods, or granules. For block-shaped hot melt adhesive, a soluble film is coated around the block during molding, forming a film-coated hot melt adhesive, which is then laser-heat-sealed and cut. Subsequently, the film-coated hot melt adhesive is cooled and cured in a cold water system.

[0003] Chinese patent CN219946957U discloses a membrane-coated hot melt adhesive cooling tank, comprising a water tank extending laterally for conveying membrane-coated hot melt adhesive from left to right. The tank has multiple spaced-apart inlet pipes, each carrying coolant and equipped with multiple downward-spraying nozzles. A spinning device is located between adjacent inlet pipes, comprising a water wheel rotatably connected to the tank and a servo motor for driving the water wheel. Multiple paddles are evenly distributed around the outer circumference of the water wheel to press the membrane-coated hot melt adhesive off the surface of the coolant and push it to the right. This technical solution allows for multiple flips and spraying during the left-to-right conveying of the membrane-coated hot melt adhesive, changing the portion of the adhesive exposed above the coolant surface and spraying the exposed portion. Furthermore, the hot melt adhesive is completely submerged in the coolant during the pressing and pushing process. However, the linear tank is relatively large in size for the same cooling stroke, making it inconvenient to place.

[0004] Chinese patent CN218557723U discloses a water-cooled production line for film-coated hot melt adhesive, including a water tank. A hot melt adhesive inlet is fixedly connected to the lower left side of the water tank, a scooping device is fixedly connected to the upper right side of the water tank, a conveying device is fixedly connected to the lower right side of the scooping device, a drying device is fixedly connected to the lower left side of the conveying device, and a box-sealing and packaging device is fixedly connected to the left side of the drying device. This water-cooled production line for film-coated hot melt adhesive allows the hot melt adhesive to be used without removing the outer coating film, preventing adhesion to workers' clothing and improving worker efficiency. The water tank is U-shaped, resulting in a smaller size for the same cooling stroke. However, this technical solution lacks the paddles found in the aforementioned Chinese patent CN219946957U, and the film-coated hot melt adhesive does not undergo multiple tumbling processes during water tank transport, leading to low cooling efficiency. Summary of the Invention

[0005] The purpose of this invention is to provide a film-coated hot melt adhesive cooling device, which aims to solve the technical problem that existing cooling devices are difficult to balance in terms of device size and cooling efficiency.

[0006] This application provides a film-coated hot melt adhesive cooling device, comprising: An extrusion device having a forming outlet for supplying a soluble film sleeve; A heat-sealing and cutting device is installed on the extrusion device and performs heat-sealing and cutting on a soluble film containing hot melt adhesive. A cooling device includes a water tank, at least one guide plate, and at least one cooling pipe. One end of the water tank is located below the forming outlet, and the other end of the water tank is at least partially arranged in a Z-shape. The cooling pipe is installed on the top of the water tank and extends along the extension direction of the water tank. The cooling pipe is provided with a plurality of spaced-apart spray nozzles so that the coolant flowing inside the cooling pipe is sprayed into the water tank through the spray nozzles. The guide plate is installed inside the water tank and located between two adjacent spray nozzles, and the guide plate is at least partially lower than the bottom of the spray nozzles.

[0007] In one embodiment, the guide plate is rotatably mounted on the side wall of the water tank at its first downstream end, and is adjustablely mounted on the side wall of the water tank at its second upstream end, with the second end of the guide plate being higher than the first end of the guide plate.

[0008] In one embodiment, the cooling device further includes a height adjustment mechanism, which includes a stop component, a drive assembly, and a support component. The stop component is fixedly installed on the side wall of the water tank and has multiple stop notches distributed circumferentially. The drive assembly is rotatably installed on the side wall of the water tank and can rotate to different stop notches. A first end of the support component is fixedly connected to the drive assembly, and a second end of the support component is supported on the bottom of the second end of the guide plate. The second end of the support component moves up and down as the drive assembly rotates.

[0009] In one embodiment, the drive assembly includes a drive wheel, a driven wheel, a pressing spring, and a drive rod. The driven wheel is connected to the support member. The drive wheel and the driven wheel are rotatably mounted on the side wall of the water tank. The drive wheel is connected to a sleeve with a sliding groove. The drive rod is slidably mounted inside the sleeve and connected to a vertical stop bar. The vertical stop bar passes through the sliding groove and can be fitted into different gear notches. The pressing spring is located between the bottom of the sleeve and the drive rod to elastically press the drive rod against the gear position member.

[0010] In one embodiment, the cooling device further includes a tension rope that is installed across the width of the water tank, the tension rope abutting against the top surface of the guide plate and near the second end of the guide plate.

[0011] In one embodiment, a first magnet is mounted on the bottom surface of the guide plate, the first magnet being located between a first end and a second end of the guide plate, and an electromagnet is mounted on the inner side of the water tank, the electromagnet attracting the first magnet and moving downwards when energized.

[0012] In one embodiment, the heat-sealing cutting device includes a heat-sealing guide rail, a heat-sealing fixing plate, and a heat-sealing sliding plate. The heat-sealing fixing plate is fixedly installed on the heat-sealing guide rail, and the heat-sealing sliding plate is slidably installed on the heat-sealing guide rail and can slide toward the heat-sealing fixing plate to jointly clamp the soluble film. The heat-sealing fixing plate is provided with a first resistance sheet, a resistance cutting strip, and a second resistance sheet arranged in parallel from top to bottom, all of the same material and length. Among the first resistance sheet, the resistance cutting strip, and the second resistance sheet, the resistance cutting strip has the smallest width.

[0013] In one embodiment, the cooling device further includes a scooping device and a material bin, with one end of the scooping device located at the end of the water tank and the other end of the scooping device located in the material bin, so as to load the cooled and cured film-coated hot melt adhesive into the material bin.

[0014] In one embodiment, the cooling device further includes a laser marking device installed on the top of the material bin. The laser marking device includes a laser emitter, a micro / nano relief plate, and a driving mechanism. The laser emitter is used to generate a marking laser. The micro / nano relief plate has multiple different micro / nano relief structures. The micro / nano relief structures are used to adjust the spatial energy distribution characteristics of the marking laser. The driving mechanism is used to guide the marking laser to be incident on different micro / nano relief structures.

[0015] In one embodiment, the micro / nano relief plate has a central through hole, and all the micro / nano relief structures are distributed sequentially at intervals around the central through hole. The driving mechanism includes a rotating shaft and an incident light component and an exit light component located at both ends of the rotating shaft. The rotating shaft is movably and rotatably disposed through the central through hole. A first light-incident plate is disposed at one end of the rotating shaft near the incident light component, and a first light-exiting plate is disposed at one end of the rotating shaft near the exit light component. The incident light component has a second light-incident plate corresponding to each of the micro / nano relief structures, and the exit light component has a second light-exiting plate corresponding to each of the micro / nano relief structures, so that the marking laser generated by the laser emitter sequentially passes through the first light-incident plate, the second light-incident plate, the micro / nano relief structure, the second light-exiting plate, and the first light-exiting plate and is incident on the film-coated hot melt adhesive located in the material box.

[0016] The beneficial effects of the film-coated hot melt adhesive cooling device provided by this invention are as follows: Liquid hot melt adhesive is extruded from the forming outlet of the extrusion device and loaded into a soluble film. The heat-sealing and cutting device installed on the extrusion device heat-seales and cuts the soluble film to form independently packaged block-shaped film-coated hot melt adhesive. The film-coated hot melt adhesive falls into the water tank below. The cooling pipe sprays the internally transported coolant into the water tank through nozzles. The coolant flows from one end of the water tank to the other end, causing the film-coated hot melt adhesive to flow in a meandering zigzag pattern. When it passes the guide plate, it is pressed and immersed in the coolant, achieving sufficient cooling. This results in a long cooling stroke and a large cooling exchange area. The zigzag shape of the water tank shortens the length, and the guide plate does not need to be rotated like a lever, reducing the height occupied and avoiding interference with the cooling pipe. The cooling pipe can extend continuously along the extension direction of the water tank, increasing the supply of coolant and facilitating the replenishment of coolant in the water tank along the way. This keeps the coolant in the water tank at a low temperature and improves the cooling effect, solving the technical problem that existing cooling equipment cannot balance equipment size and cooling efficiency. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of the film-coated hot melt adhesive cooling device provided in an embodiment of the present invention; Figure 2 A top view of a film-coated hot melt adhesive cooling device; Figure 3 This is another structural schematic diagram of the film-coated hot melt adhesive cooling device provided in an embodiment of the present invention; Figure 4 for Figure 3 A magnified view of part A; Figure 5 This is a schematic diagram of the heat-sealing and cutting device in a film-coated hot melt adhesive cooling equipment. Figure 6 A schematic diagram of the height adjustment mechanism of a film-coated hot melt adhesive cooling equipment; Figure 7 An exploded schematic diagram of the height adjustment mechanism of a film-coated hot melt adhesive cooling device; Figure 8 This is an assembly diagram of the gear shift, drive wheel, sleeve, pressing spring, and drive rod of a film-coated hot melt adhesive cooling device. Figure 9 for Figure 8 A sectional view of the gear shift mechanism, drive wheel, sleeve, pressing spring, and drive lever along the MM line; Figure 10 This is a schematic diagram of the laser marking device in a film-coated hot melt adhesive cooling equipment.

[0019] The following are the labeling elements in the figure: 100. Extrusion device; 101. Molding outlet; 200. Heat sealing and cutting device; 210. Heat sealing guide rail; 220. Heat sealing fixing plate; 221. First resistance element; 222. Resistance cutting strip; 223. Second resistance element; 230. Heat sealing sliding plate; 240. Heat sealing motor; 300. Cooling device; 310. Water tank; 320. Guide plate; 330. Cooling pipe; 331. Spray nozzle; 340. Height adjustment mechanism; 341. Gear positioner; 3411. Gear position notch; 342. Drive assembly; 3421. Drive wheel; 3422. Driven wheel; 3423. Pressing spring; 3424. Drive rod; 3425. Sleeve; 3426. Sliding groove; 3427. Vertical stop bar; 344. Support member; 3441. Support surface; 350. Tensioning rope; 361. First magnet; 362. Electromagnet; 400. Laser marking device; 410. Laser emitter; 420. Micro / nano relief plate; 421. Micro / nano relief structure; 422. Central through hole; 430. Drive mechanism; 431. Rotation shaft; 432. Incident light assembly; 433. Outgoing light assembly; 434. First incident light plate; 435. First outgoing light plate; 436. Second incident light plate; 437. Second outgoing light plate; 438. Marking shell; 510. Lifting device; 520. Material box. Detailed Implementation

[0020] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0021] Throughout this specification, references to "an embodiment" or "an embodiment" mean that a particular feature, structure, or characteristic described in connection with an embodiment is included in at least one embodiment of this application. Therefore, the phrases "in one embodiment" or "in some embodiments" appear in various places throughout the specification, and not all refer to the same embodiment. Furthermore, in one or more embodiments, particular features, structures, or characteristics may be combined in any suitable manner.

[0022] In the description of this invention, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0023] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature.

[0024] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0025] Combination Figures 1 to 3 This application provides a film-coated hot melt adhesive cooling device, including an extrusion device 100, a heat-sealing and cutting device 200, and a cooling device 300. The extrusion device 100 has a forming outlet 101 for supplying a soluble film. The heat-sealing and cutting device 200 is installed on the extrusion device 100 and performs heat-sealing and cutting on the soluble film containing hot melt adhesive.

[0026] The cooling device 300 includes a water tank 310, at least one guide plate 320, and at least one cooling pipe 330. One end of the water tank 310 is located below the molding outlet 101, and the other end of the water tank 310 is at least partially arranged in a Z-shape. The Z-shaped meandering water tank 310 design significantly reduces the length dimension compared to traditional straight tanks while ensuring the same cooling stroke, greatly improving the utilization rate of workshop space. The cooling pipe 330 is installed on the top of the water tank 310 and extends along the extension direction of the water tank 310. The cooling pipe 330 is provided with multiple spaced-apart spray nozzles 331 so that the coolant flowing inside the cooling pipe 330 is sprayed into the water tank 310 through the spray nozzles 331.

[0027] The guide plate 320 is installed inside the water tank 310 and located between two adjacent spray nozzles 331. The guide plate 320 is at least partially lower than the bottom of the spray nozzles 331. The guide plate 320 eliminates the high redundancy and interference risk caused by rotating parts in the prior art, reduces the membrane breakage rate, and can stably press the membrane hot melt adhesive into the coolant for immersion. It avoids the membrane hot melt adhesive that is not fully immersed in the coolant during the rotation of the paddle in the prior art. Together with the segmented spray of the cooling pipe 330, it forms three-dimensional cooling, improves cooling uniformity and cooling efficiency, shortens cooling time, and avoids interference with the cooling pipe 330 by eliminating the need for the guide plate 320 to rotate.

[0028] Liquid hot melt adhesive is extruded from the forming outlet 101 of the extrusion device 100 and loaded into a soluble film. The heat-sealing and cutting device 200 installed in the extrusion device 100 heat-seales and cuts the soluble film to form individually packaged block-shaped film-coated hot melt adhesive. The film-coated hot melt adhesive falls into the water tank 310 below. The cooling pipe 330 sprays the internally transported coolant into the water tank 310 through nozzles. The coolant flows from one end of the water tank 310 to the other end, causing the film-coated hot melt adhesive to flow in a zigzag pattern. When it passes the guide plate 320, it is pressed and immersed in the coolant. Sufficient cooling is achieved, resulting in a long cooling path and a large cooling exchange area. The Z-shaped water tank 310 shortens the length, and the guide plate 320 does not need to be rotated like a lever, reducing the occupied height and avoiding interference with the cooling pipe 330. The cooling pipe 330 can extend continuously along the extension direction of the water tank 310, increasing the supply of coolant and facilitating the replenishment of coolant in the water tank 310 at various points along the way. This keeps the coolant in the water tank 310 at a low temperature throughout, improving the cooling effect and solving the technical problem of existing cooling equipment that is difficult to balance equipment size and cooling efficiency.

[0029] In one embodiment, combined Figure 1The cooling equipment has two perpendicular directions: horizontal (X), vertical (Y), and vertical (Z). The extrusion device 100 and the water tank 310 are spaced apart along the positive direction of the horizontal (X). The water tank 310 first extends one end along the positive direction of the horizontal (X), then extends along the positive direction of the vertical (Y), and then bends in a zigzag shape with the bending direction facing the negative direction of the horizontal (X). This makes the cooling equipment smaller in both the horizontal (X) and vertical (Y) directions, thus reducing the floor space required.

[0030] In one embodiment, the water tank 310 has an inlet at its first end and an outlet at its second end. A circulation pump connects the inlet and outlet outside the water tank 310, allowing the coolant from the outlet to return to the inlet and re-enter the water tank 310. The cooling pipe 330 can be connected to the outlet of the circulation pump that generates the water flow. The cooling equipment also includes a chiller, whose inlet is connected to the outlet of the circulation pump, and whose outlet is connected to the inlet and the cooling pipe 330. The chiller cools the coolant entering the tank, lowers its temperature, and, in conjunction with the circulation pump, returns the coolant to the inlet to reduce the temperature of the coolant in the water tank 310.

[0031] exist Figures 1 to 3 In one embodiment shown, there are two cooling pipes 330, arranged parallel to each other on the water tank 310. Both cooling pipes 330 extend along the extension direction of the water tank 310, and extend substantially from the first end to the last end of the water tank 310. One cooling pipe has the same length as the water tank 310, while the other cooling pipe is 80% to 95% of the length of the water tank 310. It is understood that in other embodiments, the number of cooling pipes 330 may be one or three, and this is not limited here.

[0032] In one embodiment, the cooling pipe 330 is filled with coolant and is provided with a plurality of downward spray nozzles 331 for spraying coolant, while the water tank 310 is filled with coolant for the film-coated hot melt adhesive. The coolant may be water or a coolant with a density greater than that of the film-coated hot melt adhesive.

[0033] exist Figures 1 to 3 In one embodiment shown, each cooling conduit 330 is provided with a plurality of spray nozzles 331. Optionally, a spray nozzle 331 is provided in the cooling conduit 330 at a predetermined interval.

[0034] exist Figures 1 to 3 In one embodiment shown, the number of guide plates 320 is multiple. For example, combined with Figure 2Four guide plates 320 are arranged in each longitudinal Y extension of the water tank 310, and one guide plate 320 is arranged in the transverse X extension at the beginning of the water tank 310. Each guide plate 320 is located between two adjacent spray nozzles 331 on the same cooling pipe 330, but not every two adjacent spray nozzles 331 are between guide plates 320.

[0035] In some embodiments, combined with Figure 5 The heat-sealing and cutting device 200 includes a heat-sealing guide rail 210, a heat-sealing fixing plate 220, and a heat-sealing sliding plate 230. The heat-sealing fixing plate 220 is fixedly installed on the heat-sealing guide rail 210, and the heat-sealing sliding plate 230 is slidably installed on the heat-sealing guide rail 210 and can slide toward the heat-sealing fixing plate 220 to jointly clamp the soluble film. The heat-sealing fixing plate 220 is provided with a first resistance sheet 221, a resistance cutting strip 222, and a second resistance sheet 223 of the same material and length, arranged in parallel from top to bottom. Among the first resistive sheet 221, the resistive cutting strip 222, and the second resistive sheet 223, the width of the resistive cutting strip 222 is the smallest, and therefore the resistance of the resistive cutting strip 222 is the largest. That is, under the same voltage, the first resistive sheet 221 and the second resistive sheet 223 heat seal the soluble film, but the heat generated by the resistive cutting strip 222 will melt the soluble film. Since the resistive cutting strip 222 is located between the first resistive sheet 221 and the second resistive sheet 223, the soluble film contacts the first resistive sheet 221 and the second resistive sheet 223 for heat sealing. The resistive cutting strip 222 cuts the soluble film between the two heat-sealed areas, thus achieving continuous packaging.

[0036] The soluble film is vertically inserted between the heat-sealing fixing plate 220 and the heat-sealing sliding plate 230. After the soluble film is filled with a preset amount of hot melt adhesive, the heat-sealing sliding plate 230 slides along the heat-sealing guide rail 210 and clamps the soluble film together with the heat-sealing fixing plate 220. The first resistor 221, the resistor cutting strip 222 and the second resistor 223, which are arranged in parallel, are energized. The heat generated by the first resistor 221 and the second resistor 223 realizes the heat sealing of the soluble film. The resistor cutting strip 222 has a small width and the heat generated melts and cuts the soluble film, realizing the synchronous and efficient completion of heat sealing and cutting. There is no need to perform heat sealing and cutting in separate steps, avoiding the film material displacement and loss caused by secondary positioning, and improving the work efficiency.

[0037] Specifically, in combination Figure 5 Two heat-sealing guide rails 210 are set horizontally, and one end of one of the heat-sealing guide rails 210 is equipped with a heat-sealing motor 240, which drives the heat-sealing sliding plate 230 to slide along the heat-sealing guide rail 210.

[0038] In some embodiments, combined with Figure 4 and Figure 6The guide plate 320 is rotatably mounted on the side wall of the water tank 310 at its first end downstream of the water tank 310, and its second end is adjustablely mounted on the side wall of the water tank 310 at its second end upstream of the water tank 310, with the second end of the guide plate 320 being higher than the first end. Based on this, the hot melt adhesive of the membrane pack first encounters the second end of the guide plate 320. Because the second end of the guide plate 320 is higher than the first end, it forms a natural inclined guide, guiding the membrane pack smoothly along the coolant flow direction, reducing the frictional resistance between the membrane pack and the guide plate 320. The membrane pack is gradually pressed by the guide plate 320 and completely immersed in the water tank 310, improving the cooling effect. Under the action of the water flow, it passes through the first end of the guide plate 320 and leaves the pressure of the guide plate 320. Furthermore, the first end of the guide plate 320 is rotatable, achieving flexible pressing, which, compared to traditional rigid paddles, helps reduce the membrane pack breakage rate, especially suitable for ultra-thin membrane packs.

[0039] In one embodiment, combined Figure 6 and Figure 7 The cooling device 300 also includes a height adjustment mechanism 340, which includes a stop member 341, a drive assembly 342, and a support member 344. The stop member 341 is fixedly installed on the side wall of the water tank 310 and has multiple stop notches 3411 distributed circumferentially. The drive assembly 342 is rotatably installed on the side wall of the water tank 310 and can be rotated to different stop notches 3411. The first end of the support member 344 is fixedly connected to the drive assembly 342, and the second end of the support member 344 is supported on the bottom of the second end of the guide plate 320. The second end of the support member 344 moves up and down as the drive assembly 342 rotates.

[0040] Based on this, the drive component 342 can rotate to different gear notches 3411. With different rotation angles, the second end of the support member 344 rotates at different angles with the drive component 342, resulting in different lifting distances to the second end of the guide plate 320, thus achieving different tilt angles of the guide plate 320 and adapting to different specifications and sizes of film-coated hot melt adhesive.

[0041] The notch 3411 can limit the rotation of the drive component 342, preventing accidental rotation and enabling precise and controllable adjustment of the guide plate 320 angle. Multiple notches 3411 distributed circumferentially on the stop component 341 form clearly defined adjustment positions. Rotation of the drive component 342 switches positions, causing the support component 344 to rise and fall precisely. This allows the tilt angle of the guide plate 320 to be adjusted in stages within a certain angle range, adapting to membrane packs of different thicknesses.

[0042] In one embodiment, combined Figure 6 and Figure 7The drive assembly 342 includes a drive wheel 3421, a driven wheel 3422, a pressing spring 3423, and a drive rod 3424. The driven wheel 3422 is connected to the support member 344. The drive wheel 3421 and the driven wheel 3422 are rotatably mounted on the side wall of the water tank 310. The drive wheel 3421 is connected to a sleeve 3425. The sleeve 3425 is provided with a sliding groove 3426. The drive rod 3424 is slidably mounted in the sleeve 3425. The drive rod 3424 is connected to a vertical stop bar 3427. The vertical stop bar 3427 passes through the sliding groove 3426 and can be embedded in different gear notches 3411. The pressing spring 3423 is provided between the bottom of the sleeve 3425 and the drive rod 3424 to elastically press the drive rod 3424 to the gear member 341.

[0043] It should be noted that, in combination Figure 7 , Figure 8 and Figure 9 The gear shift component 341 is fixed, while the drive rod 3424, sleeve 3425, and drive wheel 3421 can rotate relative to the gear shift component 341. The vertical gear lever 3427 is slidably disposed within the sliding groove 3426 along its length. (See also...) Figure 7 and Figure 8 The vertical stop lever 3427 is embedded in the intermediate stop notch 3411. The vertical stop lever 3427 and the drive lever 3424 cannot rotate; that is, the stop notch 3411 limits the rotation of the drive assembly 342, preventing accidental rotation and enabling precise and controllable adjustment of the guide plate 320's angle. When the angle of the guide plate 320 needs adjustment, the operator presses the drive lever 3424, causing it to overcome the spring force of the pressing spring 3423 and move away from the stop component 341. The vertical stop lever 3427 slides relative to the sliding groove 3426, leaving the currently embedded stop notch 3411, thus releasing the rotation limit of the stop notch 3411 on the drive assembly 342. Then, rotating the drive lever 3424 causes the vertical stop lever 3427 to rotate accordingly, pushing the sleeve 3425. The drive wheel 3421 rotates, causing the sliding groove 3426 to rotate with the vertical stop lever 3427 until it engages with different gear position notches 3411. Finally, the external force is removed, and the pressing spring 3423 pushes the drive rod 3424 to move towards the gear position member 341. The vertical stop lever 3427 slides along the sliding groove 3426 and is fitted into the gear position notch 3411 that engages with the sliding groove 3426. The gear position notch 3411 limits the rotation of the vertical stop lever 3427 and the drive assembly 342. Based on this, the vertical stop lever 3427 can be fitted into different gear position notches 3411.

[0044] The vertical stop 3427 of the drive rod 3424 passes through the sliding groove 3426, which limits the drive rod 3424 to slide relative to the sleeve 3425. However, when the drive rod 3424 rotates, it will drive the sleeve 3425, the drive wheel 3421, the driven wheel 3422 and the support member 344 to rotate. When the support height of the support member 344 needs to be adjusted, external force pushes the drive rod 3424 to compress the pressing spring 3423 and slide it along the sliding groove 3426, causing the vertical stop lever 3427 to leave the current gear position notch 3411. Then, the drive rod 3424 is rotated, and the vertical stop lever 3427 drives the sleeve 3425, drive wheel 3421, driven wheel 3422, and support member 344 to rotate synchronously. When the vertical stop lever 3427 rotates to the corresponding gear position notch 3411, the external force is removed, and the pressing spring 3423 elastically presses the drive rod 3424 to the gear position member 341, so that the vertical stop lever 3427 is stably limited to the corresponding gear position notch 3411, preventing the support member 344 from shaking. Based on this, the operator only needs to rotate the drive wheel 3421 to complete the gear switching and automatic locking. A single person can complete the adjustment in a short time, improving work efficiency.

[0045] Specifically, the drive wheel 3421, driven wheel 3422, and support member 344 are located inside the water tank 310, so that the support member 344 can easily abut against the bottom of the guide plate 320 located inside the water tank 310. The sleeve 3425 extends through the thickness of the water tank 310, one end of the stop member 341 is sleeved on the end of the sleeve 3425, and the other end extends to the outer wall of the water tank 310. The stop member 341 has an axially through operating hole, which allows the operator to push the drive rod 3424 to slide along the sliding groove 3426 and rotate the drive rod 3424 from the outer wall of the water tank 310 through the operating hole.

[0046] exist Figure 7 In the illustrated embodiment, the gear shift member 341 has three gear shift notches 3411, and the support member 344 has three support surfaces 3441. The support member 344 with different gear shift notches 3411 abuts against the bottom of the guide plate 320 through different support surfaces 3441. The support surface 3441 is flat, which improves the stability of the support.

[0047] In one embodiment, combined Figures 1 to 4The cooling device 300 also includes a tension rope 350, which is installed across the width of the water tank 310. The tension rope 350 abuts against the top surface of the guide plate 320 and is close to the second end of the guide plate 320. Based on this, when the second end of the guide plate 320 rotates and rises, it will abut against the tension rope 350. The tension rope 350 applies a downward rotational elastic force to the second end of the guide plate 320, providing additional lateral restraint force to the guide plate 320. That is, the guide plate 320 is clamped by the height adjustment mechanism 340 and the tension rope 350, thereby keeping the tilt angle of the guide plate 320 stable and effectively preventing the guide plate 320 from swaying under the influence of membrane impact or water flow fluctuations.

[0048] Furthermore, the tension rope 350 is designed with a certain degree of elastic adjustment to accommodate membrane packs of different thicknesses and densities. When changing to membrane packs of different specifications, the tension rope 350 can automatically adjust its contact with the guide plate 320 according to the different forces exerted by the membrane packs on it, eliminating the need for additional manual adjustment of the tension rope 350. This ensures stable pressure from the guide plate 320 on various types of membrane packs, greatly improving the equipment's versatility and production changeover efficiency. The tension rope 350 is ingeniously designed, requiring no complex adjustment mechanisms or electrical controls. It achieves stable constraint on the guide plate 320 solely through its own tensioning action, significantly simplifying the equipment structure and reducing the failure rate.

[0049] Specifically, the top of each guide plate 320 abuts against the tension rope 350, and the tension rope 350 crosses and abuts against the top of the guide plate 320. The ends of the tension rope 350 are fixedly installed in the water tank 310.

[0050] In one embodiment, combined Figure 4 The bottom surface of the guide plate 320 is mounted on the first magnet 361, which is located between the first and second ends of the guide plate 320. An electromagnet 362 is installed inside the water tank 310. When energized, the electromagnet 362 attracts the first magnet 361, causing it to move downwards. In this device, the bottom surface of the guide plate 320 is mounted on the first magnet 361, which is located between the first and second ends of the guide plate 320. The electromagnet 362 installed inside the water tank 310 can attract the first magnet 361 and cause it to move downwards when energized; that is, the electromagnet 362, relative to the electromagnet block, can mutually attract the first magnet 361.

[0051] Based on this, when the second end of the guide plate 320 rotates and rises, the electromagnet 362 is energized to attract the first magnet 361, causing the guide plate 320 to have a downward tendency. That is, the guide plate 320 is balanced by the height adjustment mechanism 340 and the magnetic force, thus keeping the tilt angle of the guide plate 320 stable and effectively preventing the guide plate 320 from swaying under the influence of membrane impact or water flow fluctuations. When it is necessary to adjust the tilt angle of the guide plate 320, the electromagnet 362 is de-energized, releasing the magnetic force, making it easier for the height adjustment mechanism 340 to adjust the height of the second end of the guide plate 320 effortlessly.

[0052] Specifically, the height adjustment mechanism 340 and the solenoid 362 are located on opposite sides of the water tank 310 and do not structurally interfere with each other.

[0053] In one embodiment, combined Figure 1 The cooling equipment also includes a lifting device 510 and a material bin 520. One end of the lifting device 510 is located at the end of the water tank 310, and the other end is located in the material bin 520, to load the cooled and cured film-coated hot melt adhesive into the material bin 520. By adding the lifting device 510 and the material bin 520 to the cooling equipment, and placing one end of the lifting device 510 at the end of the water tank 310 and the other end connected to the material bin 520, the cooled and cured film-coated hot melt adhesive can be automatically loaded into the material bin 520 without manual intervention, significantly improving the automation level of the production line. This automated operation not only reduces labor costs but also avoids errors and delays that may be caused by manual operation, thereby improving overall production efficiency.

[0054] In some embodiments, combined with Figure 1 and Figure 10 The cooling equipment also includes a laser marking device 400 installed on top of the material bin 520. The laser marking device 400 includes a laser emitter 410, a micro / nano relief plate 420, and a drive mechanism 430. The laser emitter 410 generates the marking laser. The micro / nano relief plate 420 has multiple different micro / nano relief structures 421, which are used to adjust the spatial energy distribution characteristics of the marking laser. The drive mechanism 430 guides the marking laser to different micro / nano relief structures 421, enabling the marking of different labels on the film package. By guiding the marking laser to different micro / nano relief structures 421 through the drive mechanism 430, various marking styles and effects can be achieved, such as different patterns, text, and QR codes, meeting diverse marking needs and improving versatility.

[0055] In some embodiments, combined with Figure 1 and Figure 8The cooling equipment also includes a laser marking device 400 installed on top of the material bin 520. The laser marking device 400 includes a laser emitter 410, a micro / nano relief plate 420, and a drive mechanism 430. The laser emitter 410 generates the marking laser. The micro / nano relief plate 420 has multiple different micro / nano relief structures 421, which are used to adjust the spatial energy distribution characteristics of the marking laser. The drive mechanism 430 guides the marking laser to different micro / nano relief structures 421, enabling the marking of different labels on the film package. By guiding the marking laser to different micro / nano relief structures 421 through the drive mechanism 430, various marking styles and effects can be achieved, such as different patterns, text, and QR codes, meeting diverse marking needs and improving versatility.

[0056] Micro-nano embossed structures, a type of optical texture structure, are achieved through graphic design and high-precision laser lithography. They are named for their micron- and nanon-scale dimensions. Micro-nano structures, with their rich sense of depth, are favored by the packaging industry and are currently one of the most popular optical technologies. As the technology matures, many label printing companies are gradually introducing embossing technology to enhance the market competitiveness and differentiate their products.

[0057] In one embodiment, combined Figure 10 The micro-nano relief plate 420 has a central through hole 422. All micro-nano relief structures 421 are arranged sequentially and at intervals around the central through hole 422. The driving mechanism 430 includes a rotating shaft 431, and an incident light assembly 432 and an exit light assembly 433 located at opposite ends of the rotating shaft 431. The rotating shaft 431 is movably and rotatably inserted through the central through hole 422. A first light-incident plate 434 is disposed at one end of the rotating shaft 431 near the incident light assembly 432, and a second light-incident plate 434 is disposed at one end of the rotating shaft 431 near the exit light assembly 433. The first light-emitting plate 435 is provided at the end, the incident light assembly 432 has a second light-emitting plate 436 corresponding to each of the micro-nano relief structures 421, and the emitted light assembly 433 has a second light-emitting plate 437 corresponding to each of the micro-nano relief structures 421, so that the marking laser generated by the laser emitter 410 passes through the first light-emitting plate 434, the second light-emitting plate 436, the micro-nano relief structure 421, the second light-emitting plate 437, and the first light-emitting plate 435 in sequence and is incident on the film-coated hot melt adhesive located in the material box 520.

[0058] exist Figure 10In one possible example shown, three micro / nano relief structures 421 are arranged sequentially and at intervals around the central through-hole 422. The number of second light-incident plates 436 and third light-exit plates is the same as the number of micro / nano relief structures 421. Each second light-incident plate 436, micro / nano relief structure 421, and third light-exit plate is located on the same optical path, i.e., there are three optical paths. Thus, by driving the rotating shaft 431 to rotate, the first light-incident plate 434 and the first light-exit plate 435 are rotated to different angles. As a result, the first light-incident plate 434 reflects the laser to the second light-incident plate 436 on one optical path, and the first light-exit plate 435 receives the laser reflected by the second light-exit plate 437 on the same optical path and reflects it to the film package in the material box 520, completing the marking.

[0059] Based on this, the rotating shaft 431 in the drive mechanism 430 rotates, causing the first light-incident plate 434 and the first light-exit plate 435 to rotate synchronously, enabling the laser to be quickly switched onto different micro-nano relief structures 421, thereby achieving rapid switching between different marking styles. This flexibility allows the production line to easily cope with the marking needs of different products and batches without frequently changing the micro-nano relief plate 420 or adjusting the marking parameters.

[0060] Optionally, the laser marking device 400 includes a marking housing 438, with a laser emitter 410, a micro / nano relief plate 420, and a drive mechanism 430 located inside the marking housing 438. The marking housing 438 has a light-emitting hole, and a first light-emitting plate 435 is close to the light-emitting hole and always reflects the laser to the light-emitting hole, thereby realizing the outward emission of the marking laser.

[0061] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A film-coated hot melt adhesive cooling device, characterized in that, include: An extrusion device having a forming outlet for supplying a soluble film sleeve; A heat-sealing and cutting device is installed on the extrusion device and performs heat-sealing and cutting on a soluble film containing hot melt adhesive. A cooling device includes a water tank, at least one guide plate, and at least one cooling pipe. One end of the water tank is located below the forming outlet, and the other end of the water tank is at least partially arranged in a Z-shape. The cooling pipe is installed on the top of the water tank and extends along the extension direction of the water tank. The cooling pipe is provided with a plurality of spaced-apart spray nozzles so that the coolant flowing inside the cooling pipe is sprayed into the water tank through the spray nozzles. The guide plate is installed inside the water tank and located between two adjacent spray nozzles, and the guide plate is at least partially lower than the bottom of the spray nozzles.

2. The film-coated hot melt adhesive cooling device according to claim 1, characterized in that: The guide plate is rotatably mounted on the side wall of the water tank at its first downstream end, and is adjustablely mounted on the side wall of the water tank at its second upstream end, with the second end of the guide plate being higher than the first end of the guide plate.

3. The film-coated hot melt adhesive cooling device according to claim 2, characterized in that: The cooling device further includes a height adjustment mechanism, which includes a stop component, a drive assembly, and a support component. The stop component is fixedly installed on the side wall of the water tank and has multiple stop notches distributed circumferentially. The drive assembly is rotatably installed on the side wall of the water tank and can rotate to different stop notches. The first end of the support component is fixedly connected to the drive assembly, and the second end of the support component is supported on the bottom of the second end of the guide plate. The second end of the support component moves up and down as the drive assembly rotates.

4. The film-coated hot melt adhesive cooling device according to claim 3, characterized in that: The drive assembly includes a drive wheel, a driven wheel, a pressing spring, and a drive rod. The driven wheel is connected to the support member. The drive wheel and the driven wheel are rotatably mounted on the side wall of the water tank. The drive wheel is connected to a sleeve with a sliding groove. The drive rod is slidably mounted inside the sleeve and connected to a vertical stop bar. The vertical stop bar passes through the sliding groove and can be fitted into different gear notches. The pressing spring is located between the bottom of the sleeve and the drive rod to elastically press the drive rod against the gear position member.

5. The film-coated hot melt adhesive cooling device according to claim 2, characterized in that: The cooling device also includes a tension rope, which is installed across the width of the water tank and abuts against the top surface of the guide plate and near the second end of the guide plate.

6. The film-coated hot melt adhesive cooling device according to claim 2, characterized in that: The bottom surface of the guide plate is mounted on a first magnet, which is located between the first end and the second end of the guide plate. An electromagnet is installed inside the water tank, which attracts the first magnet and moves downward when energized.

7. The film-coated hot melt adhesive cooling device according to claim 1, characterized in that: The heat-sealing and cutting device includes a heat-sealing guide rail, a heat-sealing fixing plate, and a heat-sealing sliding plate. The heat-sealing fixing plate is fixedly installed on the heat-sealing guide rail, and the heat-sealing sliding plate is slidably installed on the heat-sealing guide rail and can slide toward the heat-sealing fixing plate to jointly clamp the soluble film. The heat-sealing fixing plate is provided with a first resistance sheet, a resistance cutting strip, and a second resistance sheet arranged in parallel from top to bottom, all of the same material and length. Among the first resistance sheet, the resistance cutting strip, and the second resistance sheet, the resistance cutting strip has the smallest width.

8. The film-coated hot melt adhesive cooling device according to any one of claims 1 to 7, characterized in that: The cooling equipment also includes a scooping device and a material box. One end of the scooping device is located at the end of the water tank, and the other end of the scooping device is located in the material box, so as to load the cooled and cured film-coated hot melt adhesive into the material box.

9. The film-coated hot melt adhesive cooling device according to claim 8, characterized in that: The cooling equipment also includes a laser marking device installed on the top of the material box. The laser marking device includes a laser emitter, a micro-nano relief plate, and a driving mechanism. The laser emitter is used to generate a marking laser. The micro-nano relief plate has multiple different micro-nano relief structures. The micro-nano relief structures are used to adjust the spatial energy distribution characteristics of the marking laser. The driving mechanism is used to guide the marking laser to be incident on different micro-nano relief structures.

10. The film-coated hot melt adhesive cooling device according to claim 9, characterized in that: The micro-nano relief plate has a central through hole, and all the micro-nano relief structures are arranged sequentially and at intervals around the central through hole. The driving mechanism includes a rotating shaft and an incident light component and an outgoing light component located at both ends of the rotating shaft. The rotating shaft is movably and rotatably inserted through the central through hole. A first light-incident plate is provided at one end of the rotating shaft near the incident light component, and a first light-outceasing plate is provided at one end of the rotating shaft near the outgoing light component. The incident light component has a second light-incident plate corresponding to each of the micro-nano relief structures, and the outgoing light component has a second light-outceasing plate corresponding to each of the micro-nano relief structures, so that the marking laser generated by the laser emitter passes sequentially through the first light-incident plate, the second light-incident plate, the micro-nano relief structure, the second light-outceasing plate, and the first light-outceasing plate and is incident on the film-coated hot melt adhesive located in the material box.

Images