A solvent-free laminating machine capable of automatically cleaning the inner wall of a cooling roller

Abstract

The invention relates to the technical field of food bag processing, and discloses a solvent-free laminating machine capable of automatically cleaning the inner wall of a cooling roller, comprising a cabinet, a heating unit installed inside the cabinet, a heat exchange roller installed inside the cabinet, and a first unwinding unit installed outside the cabinet. Thanks to the expansion design of the outer side of the circular threaded cavity, the spiral angle of the spiral fluid gradually expands during the flow process, starting from a small angle and ending at a large angle, and finally accurately acts on the middle of the inner wall of the heat exchange roller. In this process, two spiral fluids impact each other and are fully mixed. When they collide, they first contact the middle of the inner wall of the heat exchange roller, and then move in opposite directions under the action of the impact mixing force. Under the guidance of the thread groove, this part of the mixed fluid forms a water film structure surrounding the inner wall of the heat exchange roller along the trajectory of the thread groove, and gradually moves downward, thereby forming a spiral structure again and achieving a more uniform cooling effect.

Description

Technical Field

[0001] The invention relates to the technical field of food bag processing, in particular to a solvent-free laminating machine capable of automatically cleaning the inner wall of a cooling roller. Background Art

[0002] In the production process of food bags, solvent-free laminating machines play a vital role. The equipment uses a rubber roller to apply glue to bond two food films of different materials together. The food films then enter the heating and pressing process. In this process, the heating operation can activate the glue to ensure good bonding between the food films. At the same time, a cooling operation is also performed, which can cause the glue to solidify quickly, thereby stabilizing the composite structure. Finally, the winding device is used to neatly roll up the composite food film. Therefore, the entire process is efficient and orderly, and can fully guarantee the quality requirements of food bags.

[0003] However, there are still some problems with the existing solvent-free laminating machines: First, during the cooling process, the cooling medium circulates in the cooling roller from one end to the other. Although the existing technology changes the flow of the medium to make it move in a spiral fluid manner, which improves the cooling uniformity to a certain extent, there are still defects.

[0004] As the spiral fluid continues to flow and absorb heat in the cooling roller, its ability to absorb heat gradually decreases. When the spiral fluid moves to the other end of the cooling roller, due to the excessive heat absorbed in the early stage, its ability to absorb heat has been greatly reduced. This situation will directly lead to uneven cooling. For food bag production, uneven cooling will cause inconsistent cooling speeds in different parts of the food bag composite film, which will cause the glue to be incompletely cured in some parts and prematurely cured in other parts, and further affect the sealing and overall structural strength of the food bag. In addition, during the cooling process, there will be a margin on both sides of the cooling roller, that is, the food film cannot completely cover the cooling roller. Since both sides of the cooling roller are not covered by the food film, they are directly in contact with the outside world, which makes its heat exchange area relatively large. This situation will cause uneven cooling of the food film at both ends of the cooling roller. When the food bag composite film passes through the cooling roller, the cooling speed at both ends is too fast, while the cooling speed in the middle part is relatively slow, which will produce stress differences inside the composite film, making the composite film prone to warping and deformation, thereby affecting the physical properties of the composite film, such as peel strength, heat sealing strength, tensile strength, etc.

[0005] Secondly, when the cooling medium circulates in the cooling roller, since the cooling medium has absorbed heat, there is a problem of temperature difference between the water inlet and the water outlet, and the temperature difference will affect the cooling effect. The prior art uses a push plate rotation to solve the temperature difference problem. During the rotation process, the push plate makes the cooling water in the roller body move along the axial direction of the roller body and tumble to mix evenly. However, this method has many disadvantages. The tumbling effect of the push plate is only a reciprocating motion while revolving, which determines that there must be a cleaning dead angle on a complete circular surface. During the circular motion, the push plate cannot completely cover all areas inside the cooling roller. The cooling medium in some areas cannot be fully stirred and mixed, making it difficult to eliminate the temperature difference in these areas. At the same time, when the push plate reciprocates, there is a movement overlap on both sides at the stroke end, which leads to a weaker cooling effect on the other side. Therefore, under the long-term action of the unequal movement mode, due to the uneven flow of the cooling medium, impurities are easy to gather in areas with weaker cooling effects, which makes it easier for dirt to adhere to the inner wall of the cooling roller.

[0006] At the same time, since the push plate is arranged inside the cooling roller, when the inner wall of the cooling roller is flushed by a high-pressure water gun or the like, the push plate itself will reduce the cleaning effect. The push plate will block the water flow path of the high-pressure water gun, making it impossible for the water flow to directly flush certain areas of the inner wall of the cooling roller, resulting in difficulty in completely removing the dirt. This requires more time for cleaning, increasing the downtime of the equipment. In addition, the operator needs to spend more time on cleaning the equipment, further increasing the frequency and cost of equipment cleaning.

[0007] To this end, the present invention proposes a solvent-free laminating machine which can automatically clean the inner wall of a cooling roller. Summary of the invention

[0008] The object of the present invention is to provide a solvent-free laminating machine capable of automatically cleaning the inner wall of a cooling roller, so as to solve the problems raised in the above-mentioned background technology.

[0009] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a solvent-free laminating machine capable of automatically cleaning the inner wall of a cooling roller, comprising a cabinet, a heating unit is installed inside the cabinet, a heat exchange roller is installed inside the cabinet, a first unwinding unit is installed outside the cabinet, a glue coating unit is installed on a side of the cabinet away from the first unwinding unit, a second unwinding unit is installed inside the cabinet and between the first unwinding unit and the glue coating unit, the middle part of the heat exchange roller is set as an inner flow channel, the two sides of the heat exchange roller are set as outer flow channels, and the connection between the outer flow channel and the inner flow channel is set as a bend, and the heat exchange roller is provided at a predetermined position. A bidirectional spiral impact assembly is provided inside the roller to prevent temperature difference on both sides of the cooling roller. The bidirectional spiral impact assembly includes two circular threaded cavities. The two circular threaded cavities are symmetrically arranged inside the outer flow channel of the heat exchange roller, and the side of the circular threaded cavity away from the center of the heat exchange roller is connected with the outside world. At the same time, the side of the circular threaded cavity close to the center of the heat exchange roller is connected with the inner flow channel of the heat exchange roller. The side of the circular threaded cavity close to the center of the heat exchange roller gradually expands. Thread grooves are symmetrically arranged on the inner wall of the heat exchange roller with its own center as the center of symmetry, and the thread directions of the thread grooves are opposite to those of the circular threaded cavities.

[0010] Preferably, the bidirectional spiral impact assembly also includes two rotating rings, which are respectively fixedly connected to the inner wall of the cabinet, the sides of the rotating rings are penetrated with a first through hole, the bottom of the rotating rings are penetrated with a second through hole, the heat exchange roller is rotatably connected to the inside of the rotating ring, and the inside of the heat exchange roller is rotatably connected to an exhaust pipe.

[0011] Preferably, a water tank and a water pump are symmetrically installed on the outer wall of the cabinet, and the water tank and the water pump are connected to each other. The input end of the water pump is fixedly connected to a water distribution pipe 1, and the end of the water distribution pipe 1 away from the water pump passes through the first through hole and is fixedly connected to the inner surface of the discharge pipe, and the output end of the water pump is fixedly connected to a water distribution pipe 2, and the end of the water distribution pipe 2 away from the water pump is fixedly connected to the inner surface of the second through hole.

[0012] Preferably, the water tank is electrically started and closed by an external controller, a cooling medium is stored in the water pump, and a refrigeration element is arranged inside the water pump, and the refrigeration element is electrically started and closed by the external controller.

[0013] Preferably, a reeling unit is installed on the inner surface of the cabinet and between the first unreeling unit and the second unreeling unit, and a tension adjusting unit is arranged inside the cabinet.

[0014] Preferably, the cabinet has a built-in external drive device, and the external drive device is respectively installed on the outer surfaces of the tension adjustment unit, the first unwinding unit, the second unwinding unit, the winding unit and the coating unit, and the external drive device is electrically controlled to start and stop by an external controller.

[0015] Preferably, a fluid vortex generating assembly for cleaning the inner wall of the cooling roller is provided on the outer side of the discharge pipe, and the fluid vortex generating assembly includes two limiting convex rings, and the two limiting convex rings are symmetrically fixedly connected to the outer wall of the discharge pipe, and the outer surfaces of the limiting convex rings are rotatably connected to a rotating ring, and a plurality of fixed fins are fixedly connected to the outer wall of the rotating ring and arranged equidistantly in a ring, and the fixed fins located on both sides are arranged in opposite directions of rotation.

[0016] Preferably, the fluid vortex generating assembly also includes a plurality of sliding chambers, which are arranged in a ring-like shape and are equidistantly opened on the outer surface of the rotating ring. A telescopic rod is fixedly connected to the inside of the sliding chamber, and a slider is fixedly connected to the output end of the telescopic rod, and the slider is slidably connected to the inside of the sliding chamber.

[0017] Preferably, sliding fins are fixedly connected to the outer surface of the slider, and the sliding fins located on both sides are arranged in opposite directions of rotation. The side of the slider away from the telescopic rod is fixedly connected to the fixing rod, and the outer surface of the discharge pipe is symmetrically fixedly connected to the limiting slide rail, the side of the limiting slide rail close to the limiting convex ring is inclined, and the interior of the limiting slide rail is hollow.

[0018] Preferably, the fixed rod is rotatably connected to a ball shaft on one side away from the slider, the ball shaft is rotatably connected to a rotating seat on one side away from the fixed rod, a bidirectional conical rod is rotatably connected inside the rotating seat, the two sides of the bidirectional conical rod are in a gradually contracting shape, and the bidirectional conical rod is slidably connected to the outer surface of the limiting slide rail.

[0019] Preferably, the heating unit comprises two heating rollers symmetrically mounted on the inner wall of the cabinet and a device power supply mounted inside the cabinet, the heating rollers having built-in resistance wires, and the resistance wires are electrically connected to the device power supply.

[0020] Preferably, the first unwinding unit comprises a first unwinding roller and two first mounting plates, the two first mounting plates are symmetrically fixedly connected to the inner wall of the cabinet, and the first unwinding roller is rotatably connected between the two first mounting plates.

[0021] Preferably, the second unwinding unit comprises a second unwinding roller and two second mounting plates, the two second mounting plates are symmetrically fixedly connected to the inner wall of the cabinet, and the second unwinding roller is rotatably connected between the two second mounting plates.

[0022] Preferably, the winding unit comprises a winding roller and two third mounting plates, the two third mounting plates are symmetrically fixedly connected to the inner wall of the cabinet, and the winding roller is rotatably connected between the two third mounting plates.

[0023] Preferably, the glue coating unit comprises a glue roller and two fourth mounting plates, the two fourth mounting plates are symmetrically fixedly connected to the inner wall of the cabinet, and the glue roller is rotatably connected between the two fourth mounting plates.

[0024] Preferably, the tension adjustment unit includes a plurality of tension rollers rotatably connected to the inner surface of the cabinet.

[0025] Preferably, the external driving device includes several motors and belts, the heating unit, the first unwinding unit, the winding unit, the glue coating unit, the second unwinding unit and the heat exchange roller are all fixedly connected to the output shaft of the motor, any one of the tension rollers is fixedly connected to the output shaft of the motor, and the remaining tension rollers are transmission connected to the tension rollers connected to the motor through belts, and the heat exchange roller is also transmission connected to the heating unit through a belt connection.

[0026] Compared with the prior art, the beneficial effects of the present invention are: 1. Thanks to the expansion design of the outer side of the circular threaded cavity in the present invention, the spiral angle of the spiral fluid gradually expands during the flow process, starting from a small angle and ending at a large angle, and finally accurately acts on the middle of the inner wall of the heat exchange roller. In this process, the two spiral fluids impact each other and are fully mixed. When they collide, they first contact the middle of the inner wall of the heat exchange roller, and then move in opposite directions under the action of the impact mixing force. Under the guidance of the thread groove, this part of the mixed fluid forms a water film structure surrounding the inner wall of the heat exchange roller along the trajectory of the thread groove, and continues to move downward gradually, thereby forming a spiral structure again and achieving a more uniform cooling effect.

[0027] Different from the prior art in which the spiral fluid gradually absorbs heat from one end to the other, the bidirectional spiral impact assembly makes the two spiral fluids collide and mix in the middle, effectively avoiding the problem of reduced cooling capacity due to the fluid absorbing too much heat. This central impact mixing ensures that the cooling medium maintains a high heat exchange efficiency throughout the cooling roller, thereby improving the uniformity of cooling.

[0028] Among them: the central impact mixing and reverse rotation design not only avoids the problem of inefficient thermal interaction of the cooling medium due to heat absorption during the flow process, but also achieves a more uniform distribution of the cooling medium in the entire cooling roller and a more efficient heat exchange through strong mixing and guiding, significantly improving the uniformity of cooling.

[0029] Among them: under the continuous flushing of the spiral fluid, the inner wall of the heat exchange roller can be cleaned to a certain extent, reducing the adhesion of dirt and impurities.

[0030] Among them: since the spiral fluid contacts the two sides of the heat exchange roller last and has achieved sufficient mixing and heat exchange during the flow process, it can effectively balance the temperature gradient on the two sides and the middle of the heat exchange roller, reducing the warping of the food composite film.

[0031] 2. In the present invention, the rotation of the fixed fins and the rotating ring is driven by the reverse motion impact of the spiral fluid, thereby achieving comprehensive disturbance and efficient mixing of the cooling medium. Under the strong disturbance of the fixed fins, the cooling medium is given kinetic energy, so that it forms a strong turbulent effect in the cooling roller. This turbulence not only promotes heat exchange between the cooling media, but also ensures the uniformity of temperature distribution, thereby effectively eliminating the temperature difference problem between the water inlet and the water outlet. At the same time, when the rotating ring rotates, through the resistance of the fixed rod and the limiting slide rail, the sliding fins also generate lateral reciprocating motion while rotating. This composite motion mode allows the cooling medium to generate a deflected fluid vortex under the disturbance of the sliding fins, further enhancing the mixing effect of the fluid. The deflected fluid vortex can not only flush to every corner of the inner wall of the cooling roller, but also can peel off the dirt attached to the wall based on its own deflection kinetic energy, and be discharged from the heat exchange roller together with the fluid, thereby achieving efficient cleaning of the inner wall of the heat exchange roller.

[0032] Compared with the existing technology, the fluid vortex generating component not only achieves a cleaning effect without dead corners, but also has a mixed cooling medium, thereby ensuring that the temperature gradient will not produce a huge difference.

[0033] Among them: since the rotation directions of the fixed fin blades and the sliding fin blades are oppositely set, and the thread grooves are also oppositely set, the fixed fin blades and the sliding fin blades are easier to be driven during the reverse movement of the spiral fluid, so the movement of the fluid can drive the fixed fin blades and the sliding fin blades to rotate.

[0034] Among them: since the limiting slide rail is set at an angle, the movement stroke of the sliding fin blade always changes during the rotation process, that is, the composite movement of the sliding fin blade will generate fluid vortices with different angles. Therefore, such fluid vortices with different angles can also solve the problem of cleaning dead corners in the prior art.

[0035] Among them: since the fixed fins and the sliding fins can rotate when impacted, when cleaning the inner wall of the heat exchange roller, the fixed fins and the sliding fins can be made to move dynamically by using technologies such as high-pressure water guns, thereby avoiding the problem of dead angles during the cleaning process. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a front three-dimensional schematic diagram of the main structure of the present invention.

[0037] Figure 2 It is a rear perspective schematic diagram of the main structure of the present invention.

[0038] Figure 3 It is a cross-sectional stereoscopic schematic diagram of the main structure of the present invention.

[0039] Figure 4 For the present invention Figure 3 Enlarged three-dimensional schematic diagram of the structure at point A in the middle.

[0040] Figure 5 It is a partially cutaway stereoscopic schematic diagram of the heat exchange roller of the present invention.

[0041] Figure 6 For the present invention Figure 5 Enlarged three-dimensional schematic diagram of the structure at point B in the middle.

[0042] Figure 7 For the present invention Figure 5 Enlarged three-dimensional schematic diagram of the structure at point C in the middle.

[0043] Figure 8 For the present invention Figure 5 Enlarged three-dimensional schematic diagram of the structure at point D in the middle.

[0044] Fig. 9 For the present invention Figure 5 Enlarged three-dimensional schematic diagram of the structure at E in the middle.

[0045] Fig.10 It is a partial three-dimensional schematic diagram of the bidirectional spiral impact assembly of the present invention.

[0046] In the figure: 11, cabinet; 12, heating unit; 13, heat exchange roller; 14, first unwinding unit; 15, second unwinding unit; 16, winding unit; 17, glue coating unit.

[0047] 2. Bidirectional spiral impact assembly; 21. Rotary ring; 22. First through hole; 23. Second through hole; 24. Circular thread cavity; 25. Thread groove; 26. Discharge pipe; 27. Water tank; 28. Water pump; 29. ​​Water distribution pipe 1; 210. Water distribution pipe 2.

[0048] 3. Fluid vortex generating assembly; 31. Limiting convex ring; 32. Rotating ring; 33. Fixed fin blade; 34. Sliding chamber; 35. Telescopic rod; 36. Sliding block; 37. Sliding fin blade; 38. Limiting slide rail; 39. Fixed rod; 310. Ball shaft; 311. Rotating seat; 312. Bidirectional tapered rod. DETAILED DESCRIPTION

[0049] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0050] It should be noted that the structures and working principles of the heating unit 12, the first unwinding unit 14, the second unwinding unit 15, the winding unit 16 and the glue coating unit 17 belong to the prior art, and thus will not be described in detail later.

[0051] Example 1, please refer to Figures 1 to 8 As shown, a solvent-free laminating machine capable of automatically cleaning the inner wall of a cooling roller comprises a cabinet 11, a heating unit 12 is installed inside the cabinet 11, a heat exchange roller 13 is installed inside the cabinet 11, a first unwinding unit 14 is installed outside the cabinet 11, a glue coating unit 17 is installed on the side of the cabinet 11 away from the first unwinding unit 14, a second unwinding unit 15 is installed inside the cabinet 11 and between the first unwinding unit 14 and the glue coating unit 17, the middle part of the heat exchange roller 13 is set as an inner flow channel, the two sides of the heat exchange roller 13 are set as outer flow channels, and the connection between the outer flow channel and the inner flow channel is set as a bend, and the interior of the heat exchange roller 13 is provided with a useful A bidirectional spiral impact assembly 2 is provided to prevent a temperature difference from occurring on both sides of the cooling roller. The bidirectional spiral impact assembly 2 comprises two circular threaded cavities 24. The two circular threaded cavities 24 are symmetrically arranged inside the outer flow channel of the heat exchange roller 13, and the side of the circular threaded cavity 24 away from the center of the heat exchange roller 13 is connected with the outside, while the side of the circular threaded cavity 24 close to the center of the heat exchange roller 13 is connected with the inner flow channel of the heat exchange roller 13, and the side of the circular threaded cavity 24 close to the center of the heat exchange roller 13 gradually expands, and thread grooves 25 are symmetrically arranged on the inner wall of the heat exchange roller 13 with its own center as the symmetry center, and the thread directions of the thread grooves 25 are opposite to those of the circular threaded cavities 24.

[0052] Please refer to Figures 1 to 6 as well as Figure 7 and Figure 8 as well as Fig.10As shown, the bidirectional spiral impact assembly 2 also includes two rotating rings 21, and the two rotating rings 21 are respectively fixedly connected to the inner wall of the cabinet 11. The sides of the rotating rings 21 are penetrated with a first through hole 22, and the bottom of the rotating rings 21 are penetrated with a second through hole 23. The heat exchange roller 13 is rotatably connected to the inside of the rotating ring 21, and the inside of the heat exchange roller 13 is rotatably connected to the discharge pipe 26. The side of the discharge pipe 26 close to the rotating ring 21 can be installed with an external bearing seat fixedly connected to the inside of the rotating ring 21, so as to ensure the discharge To ensure the stability of the outlet pipe 26, a water tank 27 and a water pump 28 are symmetrically installed on the outer wall of the cabinet 11. The water tank 27 and the water pump 28 are connected to each other. The input end of the water pump 28 is fixedly connected to a water distribution pipe 29. The end of the water distribution pipe 29 away from the water pump 28 passes through the first through hole 22 and is fixedly connected to the inner surface of the discharge pipe 26. The output end of the water pump 28 is fixedly connected to a water distribution pipe 210. The end of the water distribution pipe 210 away from the water pump 28 is fixedly connected to the inner surface of the second through hole 23.

[0053] It should be noted that the water tank 27 is electrically started and shut down by an external controller, a cooling medium is stored in the water pump 28, which is specifically implemented as cooling water, and a refrigeration element is arranged inside the water pump 28, and the refrigeration element is electrically started and shut down by the external controller, and a winding unit 16 is installed on the inner surface of the cabinet 11 and between the first unwinding unit 14 and the second unwinding unit 15, and a tension adjustment unit is arranged inside the cabinet 11, and an external drive device is built in the cabinet 11, and the external drive device is respectively installed on the tension adjustment unit, the first unwinding unit 14, the second unwinding unit 15, and the winding unit 16. 6 and the outer surface of the coating unit 17, the external drive device is electrically controlled to start and shut down by the external controller, the heating unit 12 includes two heating rollers symmetrically installed on the inner wall of the cabinet 11 and an equipment power supply installed inside the cabinet 11, the heating roller has a built-in resistance wire, and the resistance wire is electrically connected to the equipment power supply, the first unwinding unit 14 includes a first unwinding roller and two first mounting plates, the two first mounting plates are symmetrically fixedly connected to the inner wall of the cabinet 11, the first unwinding roller is rotatably connected between the two first mounting plates, the second unwinding unit 15 includes a second unwinding roller and two second mounting plates, the two first mounting plates are symmetrically fixedly connected to the inner wall of the cabinet 11, and the first unwinding roller is rotatably connected between the two first mounting plates. The second mounting plate is symmetrically fixedly connected to the inner wall of the cabinet 11, the second unwinding roller is rotatably connected between the two second mounting plates, the winding unit 16 includes a winding roller and two third mounting plates, the two third mounting plates are symmetrically fixedly connected to the inner wall of the cabinet 11, the winding roller is rotatably connected between the two third mounting plates, the coating unit 17 includes a rubber roller and two fourth mounting plates, the two fourth mounting plates are symmetrically fixedly connected to the inner wall of the cabinet 11, the rubber roller is rotatably connected between the two fourth mounting plates, the tension adjustment unit includes a plurality of tension rollers rotatably connected between the inner surfaces of the cabinet 11, and the external drive device The equipment includes several motors and belts. The heating unit 12, the first unwinding unit 14, the winding unit 16, the glue coating unit 17, the second unwinding unit 15 and the heat exchange roller 13 are all fixedly connected to the output shaft of the motor. Any one of the tension rollers is fixedly connected to the output shaft of the motor. The remaining tension rollers are transmission-connected to the tension rollers connected to the motor through belts. The heat exchange roller 13 is also transmission-connected to the heating unit 12 through a belt connection. The first unwinding roller is provided with a composite material 1, specifically polyethylene, and the second unwinding roller is provided with a composite material 2, specifically polypropylene. A glue layer is provided on the surface of the glue roller.

[0054] Specifically, the operator electrically controls the water tank 27, the refrigeration element, the equipment power supply and the start-up of the external drive device through the external controller. At this time, the external drive device will drive the first unwinding roller, the second unwinding roller, the tension roller, the winding roller, the heating roller and the heat exchange roller 13 to rotate. At this time, the material on the second unwinding roller is compounded with the rubber layer on the tension roller and the rubber roller to form composite material three. At the same time, under the rotation of the tension roller, composite material one and composite material three are heated and compounded after passing through the heating roller to form composite material four. Finally, composite material four is cooled by the heat exchange roller 13 and finally wound onto the winding roller.

[0055] During this process, after the water pump 28 is started, the cooling water stored therein is kept at a low temperature under the action of the refrigeration element, and then the cooling water is introduced into the internal space of the spiral ring 21 along the water distribution pipe 29. Due to the connection between the discharge pipe 26 and the water distribution pipe 210, a closed-loop cooling water circulation system is formed. Therefore, when the cooling water enters the interior of the heat exchange roller 13, it can only continue to flow through the circular threaded cavity 24, and the circular threaded cavity 24 makes the cooling water produce a strong spiral flow effect when flowing through.

[0056] Specifically, the circular threaded cavity 24 utilizes the principles of fluid dynamics, and its side close to the center of the heat exchange roller 13 gradually expands to form a flow channel shape that starts at a small angle and ends at a large angle. This design allows the cooling water to not only accelerate its speed when flowing through the circular threaded cavity 24, but also continuously change its flow direction, thereby generating a strong spiral fluid. Since cooling water enters the circular threaded cavities 24 on both sides at the same time, two spiral fluids with opposite directions are formed. The two spiral fluids meet and collide in the middle of the inner wall of the heat exchange roller 13. This collision process has multiple benefits: first, it avoids excessive heat absorption of the cooling water on a single path, thereby maintaining the overall cooling efficiency of the cooling water; second, the cooling water after the collision is fully mixed, making the temperature more uniform, further improving the cooling effect.

[0057] The two fluids after the collision have opposite movement tendencies due to mutual impact and mixing. While interacting with each other, they still retain certain spiral motion characteristics. Under the action of fluid dynamics and the influence of the centrifugal force caused by the continuous rotation of the heat exchange roller 13 itself, these fluids will be strongly guided when they come into contact with the thread groove 25, thereby forming a spiral fluid moving in the opposite direction along the thread direction of the thread groove 25. This process not only enhances the heat exchange efficiency between the cooling water and the inner wall of the heat exchange roller 13, but also enables the cooling water to be more evenly distributed on the inner wall surface of the entire heat exchange roller 13. In addition, the cooling water with a spiral motion tendency can also play a certain role in cleaning the inner wall of the heat exchange roller 13.

[0058] In addition, the reverse spiral fluid can ensure that the hotter cooling water can finally contact and cool the two sides of the heat exchange roller 13 during the flow process, thereby effectively balancing the temperature distribution inside the heat exchange roller 13. In addition, as this part of the fluid continues to flow inside the heat exchange roller 13, its kinetic energy gradually disappears and finally moves to the bottom of the inner wall of the heat exchange roller 13. At this time, the water pump 28 recycles the cooling water that has absorbed a certain amount of heat again through the water distribution pipe 210, and sends it to the refrigeration element for further cooling, thereby realizing the recycling of cooling water.

[0059] Example 2, based on Example 1, please refer to Figure 5 and Fig. 9 As shown, a fluid vortex generating assembly 3 for cleaning the inner wall of the cooling roller is provided on the outer side of the discharge pipe 26, and the fluid vortex generating assembly 3 includes two limiting convex rings 31, and the two limiting convex rings 31 are symmetrically fixedly connected to the outer wall of the discharge pipe 26, and the outer surfaces of the limiting convex rings 31 are rotatably connected to a rotating ring 32, and a plurality of fixed fins 33 are fixedly connected to the outer wall of the rotating ring 32 and arranged equidistantly in a ring shape, and the fixed fins 33 located on both sides are arranged in opposite directions of rotation.

[0060] Please refer to Fig. 9 As shown, the fluid vortex generating assembly 3 further includes a plurality of sliding chambers 34, which are arranged in an annular shape and equidistantly on the outer surface of the rotating ring 32, and the sliding chambers 34 are fixedly connected with telescopic rods 35, and the output ends of the telescopic rods 35 are fixedly connected with sliders 36, and the sliders 36 are slidably connected to the inside of the sliding chambers 34, and the outer surfaces of the sliders 36 are fixedly connected with sliding fins 37, and the sliding fins 37 located on both sides are arranged in opposite directions of rotation, and the sliders 36 are fixedly connected with the fixed rods 36 on the side away from the telescopic rods 35. 9. A limiting slide rail 38 is symmetrically fixedly connected to the outer surface of the discharge pipe 26. The side of the limiting slide rail 38 close to the limiting convex ring 31 is inclined, and the inside of the limiting slide rail 38 is hollow. The side of the fixed rod 39 away from the slider 36 is rotatably connected to the ball shaft 310. The side of the ball shaft 310 away from the fixed rod 39 is rotatably connected to a rotating seat 311. The rotating seat 311 is rotatably connected to a bidirectional conical rod 312. The two sides of the bidirectional conical rod 312 are in a gradually contracting shape. The bidirectional conical rod 312 is slidably connected to the outer surface of the limiting slide rail 38.

[0061] Specifically, in the first embodiment, when the two spiral fluids form a reverse spiral structure under the guidance of the thread groove 25, they not only promote the heat exchange between the cooling water and the inner wall of the heat exchange roller 13, but also additionally trigger the cleaning mechanism of the fluid vortex generating assembly 3.

[0062] Since the screwing directions of the fixed fins 33 and the sliding fins 37 match the trajectory of the thread groove 25, the impact force and rotational momentum of the reverse spiral fluid are effectively converted into a mechanical driving force, which first causes the fixed fins 33 to start rotating, and then transmits the rotational motion to the remaining parts on the surface of the rotating ring 32 through the rotating ring 32.

[0063] As the fixed fin 33 rotates, the rotating ring 32 rotates synchronously on the limiting convex ring 31. During this process, the telescopic rod 35, the slider 36 and the sliding fin 37 in the sliding chamber 34 also enter the working state. The rotation of the sliding fin 37 not only responds to the impact of the fluid, but also because of its fixed connection with the fixed rod 39, it further drives the two-way conical rod 312 to move through the ball shaft 310 and the rotating seat 311. It is worth noting that the two sides of the two-way conical rod 312 are designed to be tapered. This design ensures that when it slides along the limiting slide rail 38, it can fit closely with the inclined surface of the limiting slide rail 38, thereby achieving comprehensive and uniform cleaning of the inner wall of the heat exchange roller 13.

[0064] It is worth noting that the compound motion of the sliding fin 37 is a key link in the cleaning mechanism. It not only rotates with the slider 36 inside the sliding chamber 34, but also slides back and forth laterally due to the limiting effect of the limiting slide rail 38. This compound motion produces a unique fluid dynamic effect: as the sliding fin 37 rotates and moves laterally, the fluid around it is stirred to form deflected fluid vortices. The generation of these fluid vortices is due to the shearing effect of the sliding fin 37 on the fluid during the rotation process, and the relative motion of the fluid between the surface of the sliding fin 37 and the internal space of the sliding chamber 34. Since the slider 36 and the sliding fin 37 are always in a state of lateral dynamic movement during the rotation process, the formation position and angle of each fluid vortex are different. This diversity enhances the ability of the fluid vortex to strip dirt from the inner wall of the cooling roller.

[0065] The reason why the fluid vortex has the tendency to overturn is that they are affected by multiple forces during the formation process. First, the fluid vortex is affected by the centrifugal force generated by the rotation of the sliding fins 37, which causes the fluid vortex to diffuse outward. Secondly, the fluid vortex is also affected by the viscous force of the surrounding fluid, which causes the fluid vortex to deform and overturn during the diffusion process. Finally, when the fluid vortex touches the inner wall of the heat exchange roller 13, they will peel off and take away the dirt on the inner wall in a powerful way. This overturning tendency not only enhances the cleaning ability of the fluid vortex, but also promotes the full mixing of the cooling water inside the cooling roller.

[0066] Therefore, the rotation of the fixed fins 33 not only directly drives the movement of the cleaning system, but also enhances the formation and cleaning effect of the fluid vortex by generating rotational momentum. The compound movement of the sliding fins 37 achieves efficient cleaning of the inner wall of the heat exchange roller 13 by generating deflected fluid vortices. During the overturning process, these fluid vortices not only peel off and remove the dirt on the inner wall, but also promote the full mixing of the cooling water inside the heat exchange roller 13, thereby improving the cooling efficiency.

[0067] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "including one..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0068] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A solvent-free laminating machine capable of automatically cleaning the inner wall of a cooling roller, comprising a cabinet (11), a heating unit (12) being installed inside the cabinet (11), a heat exchange roller (13) being installed inside the cabinet (11), a first unwinding unit (14) being installed outside the cabinet (11), a glue coating unit (17) being installed on a side of the cabinet (11) away from the first unwinding unit (14), and a second unwinding unit (15) being installed inside the cabinet (11) and between the first unwinding unit (14) and the glue coating unit (17), characterized in that: The middle of the heat exchange roller (13) is configured as an inner flow channel, the two sides of the heat exchange roller (13) are configured as outer flow channels, and the connection between the outer flow channel and the inner flow channel is configured as a bend. The heat exchange roller (13) is provided with a bidirectional spiral impact assembly (2) for preventing a temperature difference from occurring on both sides of the cooling roller. The bidirectional spiral impact assembly (2) includes two circular threaded cavities (24), the two circular threaded cavities (24) are symmetrically arranged inside the outer flow channel of the heat exchange roller (13), and the circular threaded cavities (24) are symmetrically arranged inside the outer flow channel of the heat exchange roller (13). The side of the pattern cavity (24) away from the center of the heat exchange roller (13) is connected to the outside, and the side of the circular surface thread cavity (24) close to the center of the heat exchange roller (13) is connected to the inner flow channel of the heat exchange roller (13). The side of the circular surface thread cavity (24) close to the center of the heat exchange roller (13) gradually expands. The inner wall of the heat exchange roller (13) is symmetrically provided with thread grooves (25) with its own center as the symmetry center. The thread direction of the thread grooves (25) is opposite to that of the circular surface thread cavity (24); The bidirectional spiral impact assembly (2) further comprises two rotating rings (21), the two rotating rings (21) being respectively fixedly connected to the inner wall of the cabinet (11), the sides of the rotating rings (21) being provided with a first through hole (22), the bottoms of the rotating rings (21) being provided with a second through hole (23), the heat exchange roller (13) being rotatably connected to the inside of the rotating rings (21), and the inside of the heat exchange roller (13) being rotatably connected to a discharge pipe (26).

2. A solvent-free laminating machine capable of automatically cleaning the inner wall of a cooling roller according to claim 1, characterized in that: A water tank (27) and a water pump (28) are symmetrically mounted on the outer wall of the cabinet (11); the water tank (27) and the water pump (28) are connected to each other; the input end of the water pump (28) is fixedly connected to a water distribution pipe (29); the end of the water distribution pipe (29) away from the water pump (28) passes through the first through hole (22) and is fixedly connected to the inner surface of the discharge pipe (26); the output end of the water pump (28) is fixedly connected to a water distribution pipe (210); the end of the water distribution pipe (210) away from the water pump (28) is fixedly connected to the inner surface of the second through hole (23).

3. A solvent-free laminating machine capable of automatically cleaning the inner wall of a cooling roller according to claim 2, characterized in that: The water tank (27) is electrically controlled to be started and shut down by an external controller, a cooling medium is stored inside the water pump (28), and a refrigeration element is arranged inside the water pump (28), and the refrigeration element is electrically controlled to be started and shut down by the external controller.

4. The solvent-free laminating machine capable of automatically cleaning the inner wall of a cooling roller according to claim 1, characterized in that: A reeling unit (16) is installed on the inner surface of the cabinet (11) and between the first unreeling unit (14) and the second unreeling unit (15), and a tension adjustment unit is arranged inside the cabinet (11).

5. A solvent-free laminating machine capable of automatically cleaning the inner wall of a cooling roller according to claim 4, characterized in that: The cabinet (11) has an external drive device built in, and the external drive device is respectively installed on the outer surfaces of the tension adjustment unit, the first unwinding unit (14), the second unwinding unit (15), the rewinding unit (16) and the glue coating unit (17), and the external drive device is electrically controlled to start and stop by an external controller.

6. The solvent-free laminating machine capable of automatically cleaning the inner wall of a cooling roller according to claim 1, characterized in that: A fluid vortex generating assembly (3) for cleaning the inner wall of the cooling roller is arranged on the outer side of the discharge pipe (26), and the fluid vortex generating assembly (3) includes two limiting convex rings (31), and the two limiting convex rings (31) are symmetrically fixedly connected to the outer wall of the discharge pipe (26), and the outer surfaces of the limiting convex rings (31) are rotatably connected to a rotating ring (32), and a plurality of fixed fins (33) are fixedly connected to the outer wall of the rotating ring (32) and arranged equidistantly in a ring shape, and the fixed fins (33) located on both sides are arranged in opposite directions of rotation.

7. A solvent-free laminating machine capable of automatically cleaning the inner wall of a cooling roller according to claim 6, characterized in that: The fluid vortex generating assembly (3) further comprises a plurality of sliding chambers (34), the plurality of sliding chambers (34) being arranged in an annular shape and equidistantly disposed on the outer surface of the rotating ring (32), the interior of each sliding chamber (34) being fixedly connected to a telescopic rod (35), the output end of each telescopic rod (35) being fixedly connected to a sliding block (36), and the sliding block (36) being slidably connected to the interior of the sliding chamber (34).

8. The solvent-free laminating machine capable of automatically cleaning the inner wall of the cooling roller according to claim 7, characterized in that: The outer surface of the slider (36) is fixedly connected to a sliding fin (37), and the sliding fins (37) located on both sides are arranged in opposite directions of rotation. The side of the slider (36) away from the telescopic rod (35) is fixedly connected to a fixing rod (39), and the outer surface of the discharge pipe (26) is symmetrically fixedly connected to a limiting slide rail (38), and the side of the limiting slide rail (38) close to the limiting convex ring (31) is inclined, and the interior of the limiting slide rail (38) is hollow.

9. A solvent-free laminating machine capable of automatically cleaning the inner wall of a cooling roller according to claim 8, characterized in that: The side of the fixed rod (39) away from the slider (36) is rotatably connected to a ball shaft (310), the side of the ball shaft (310) away from the fixed rod (39) is rotatably connected to a rotating seat (311), the rotating seat (311) is rotatably connected to a bidirectional tapered rod (312) inside, the two sides of the bidirectional tapered rod (312) are in a gradually contracting shape, and the bidirectional tapered rod (312) is slidably connected to the outer surface of the limiting slide rail (38).

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