A surface anti-moisture treatment device for cold-chain transport packaging cartons

Abstract

The surface anti-moisture treatment device for cold chain transportation packaging carton relates to the technical field of carton production and processing equipment, and comprises a bottom support, a spraying box mechanism is arranged at one end of the upper portion of the bottom support, a wax spraying box mechanism is arranged at the other end of the upper portion of the bottom support, a feeding box is arranged at the upper portion of the wax spraying box mechanism, a conveying box mechanism is arranged at the middle position of the upper portion of the bottom support, and the spraying box mechanism, the wax spraying box mechanism, the feeding box and the conveying box mechanism are communicated with each other. The spraying and wax spraying treatment are simultaneously performed on the surface of the carton, two waterproof layers are formed, the waterproof performance of the carton is improved, especially at the seam gap of the carton, the filling effect of the paint and the wax layer can effectively prevent water from penetrating, repeated operation is reduced, efficiency is improved, the treated carton can be reused, the waterproof performance is good, material waste is reduced, and therefore, production cost is reduced. The waste generated by one-time anti-moisture treatment is reduced, and the environment is protected.

Description

Technical Field

[0001] This invention relates to the field of cardboard box production and processing equipment technology, specifically a surface moisture-resistant treatment device for cold chain transportation packaging cardboard boxes. Background Technology

[0002] In the modern logistics industry, various protective packaging materials are frequently used to protect goods during transportation and prevent them from being affected by moisture. Cold chain transportation, as a special form of logistics, has particularly stringent requirements for the moisture-proof performance of packaging materials. Especially for cardboard boxes, which are inherently susceptible to moisture damage leading to a decrease in strength, surface moisture-resistant treatment is crucial.

[0003] Currently, there are various methods for moisture-proofing cardboard boxes, including wrapping with plastic film, applying waterproof coatings, and spraying waterproofing agents. While these methods can improve the moisture resistance of cardboard boxes to some extent, they are generally one-time treatments, requiring repeated treatment each time the box is used. Many waterproof cardboard boxes also exist, but these waterproofing processes are performed during the cardboard production stage. For example, spraying waterproof coatings and allowing them to dry forms a waterproof layer; waxing creates a waterproof wax layer on the cardboard surface; and applying varnish enhances water resistance, sun resistance, and abrasion resistance. There are also cardboard boxes that combine several of these methods to achieve waterproofing, which are then further processed into waterproof boxes. While these waterproof boxes offer good waterproofing, they are more expensive than ordinary cardboard boxes. Gaps exist at the cut and folded joints of the cardboard, resulting in poor waterproofing at these gaps. When combining waterproof coatings and wax layers for composite waterproofing, the coating must first be sprayed and dried before waxing, which is time-consuming and inefficient. Summary of the Invention

[0004] To address the shortcomings of the prior art, the present invention aims to provide a surface moisture-resistant treatment device for cold chain transportation packaging cartons, thereby solving the problems of poor waterproofing effect at gaps, low treatment efficiency, and high cost in the prior art.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution:

[0006] A surface moisture-resistant treatment device for cold chain transport packaging cartons, characterized in that: it includes a bottom support, a spraying box mechanism is provided at one upper end of the bottom support, a wax spraying box mechanism is provided at the other upper end of the bottom support, a feeding box is provided at the upper part of the wax spraying box mechanism, and a conveying box mechanism is provided at the middle position of the upper part of the bottom support, wherein the spraying box mechanism, the wax spraying box mechanism, the feeding box and the conveying box mechanism are internally connected;

[0007] Both the spraying box mechanism and the wax spraying box mechanism include a spraying assembly and a box body. The spraying assembly is located inside the box body and includes a rotating lifting tube. A lifting fixing rod is rotatably installed inside the rotating lifting tube, passing through both ends of the rotating lifting tube. A support frame is fixedly installed at the upper end of the lifting fixing rod. An internal spraying tube is fixedly installed on one side of the upper end of the rotating lifting tube. A lifting frame is slidably installed on the outer side of the rotating lifting tube via a key and keyway. An external spraying tube is installed at the upper end of the lifting frame. A step is provided on the lower side of the middle part of the rotating lifting tube near the lifting frame. A lifting hydraulic cylinder is connected to the bottom end of the lifting fixing rod and is fixed to the box body. A pulley is slidably installed on the lower end of the rotating lifting tube via a key and keyway. The pulley is rotatably installed on the box body and is connected to a drive motor. The drive motor is fixedly installed on the box body. Both the internal and external spraying tubes are L-shaped.

[0008] In a preferred embodiment, the lifting frame has a sliding hole inside, a telescopic rod is slidably mounted inside the sliding hole, a compression spring is mounted between the telescopic rod and the lifting frame and inside the sliding hole, a slider is slidably mounted on the telescopic rod, a sliding pin is fixedly mounted on the upper side of one end of the slider, a guide plate is mounted on the upper side of the housing, a rectangular groove is mounted on the lower side of the guide plate, the sliding pin is slidably mounted inside the rectangular groove, a guide rod is fixedly mounted on one side of the sliding pin, the guide rod is slidably connected to the telescopic rod, a spring is mounted on the outer side of the guide rod and between the sliding pin and the telescopic rod, and the external spray pipe is mounted on the slider.

[0009] In a preferred embodiment, the external spraying pipe is rotatably mounted on the slider, a guide wedge block is fixedly mounted at the lower end of the external spraying pipe, a guide plate is fixedly mounted on the lifting frame at the position corresponding to the guide wedge block, and a positioning plate is fixedly mounted on the inner side of the housing below the lifting frame.

[0010] In a preferred embodiment, the conveying box mechanism includes a first conveyor frame, a second conveyor frame, and a third conveyor frame. The first conveyor frame is located above the second conveyor frame, and the second conveyor frame is located above the third conveyor frame. One end of the first conveyor frame is located inside the feeding box, and the other end is located inside the spraying box mechanism. One end of the second conveyor frame is located inside the spraying box mechanism, and the other end is located inside the wax spraying box mechanism. One end of the third conveyor frame is located inside the wax spraying box mechanism. A discharge port is provided at the lower side of the conveying box mechanism corresponding to the other end of the third conveyor frame. A heating pipe is provided inside the conveying box mechanism and below the third conveyor frame. The length of the second conveyor frame inside the spraying box mechanism is longer than the length of the first conveyor frame inside the spraying box mechanism, and the length of the third conveyor frame inside the wax spraying box mechanism is longer than the length of the second conveyor frame inside the wax spraying box mechanism.

[0011] In a preferred embodiment, a feed inlet is provided at the upper part of one end of the feed box, an openable door panel is provided on the feed inlet, an exhaust pipe is provided on one side of the feed box, and an air inlet is provided on one side of the body of the spraying box mechanism.

[0012] In a preferred embodiment, the first conveyor frame, the second conveyor frame, and the third conveyor frame are all provided with slots at the middle position along the conveying direction.

[0013] In a preferred embodiment, a fixing plate is provided on the upper side of the box body and inside the slot. A guide positioning block is fixedly provided on the upper end of the fixing plate and above the outer end of the second and third conveyor frames. The end side of the guide positioning block is wedge-shaped. The fixing plate is symmetrically arranged at the slot position. An inclined edge is provided on the upper outer side of the guide positioning block.

[0014] In a preferred embodiment, the corners of the rectangular slide are all rounded.

[0015] In a preferred embodiment, the support frame is rectangular or U-shaped.

[0016] The beneficial effects of this invention are:

[0017] This invention improves the waterproof performance of cardboard boxes by simultaneously applying spraying and waxing treatments to the surface, forming two waterproof layers. Especially in the gaps between the cardboard boxes, the filling effect of the coating and wax layers effectively prevents moisture penetration. This device integrates spraying and waxing functions, completing the waterproofing treatment of cardboard boxes in one machine, achieving automated production. Compared to traditional one-time processes, this device can continuously process cardboard boxes, reducing repetitive operations and improving efficiency. The treated cardboard boxes can be reused, have good waterproof performance, reduce material waste, and thus lower production costs. It also reduces waste generated from one-time moisture-proofing treatments, which is beneficial to environmental protection. Attached Figure Description

[0018] Figure 1 This is a partial structural diagram of the present invention;

[0019] Figure 2 This is a schematic diagram of the overall structure of the present invention;

[0020] Figure 3 This is a schematic diagram of a partial planar structure of the present invention;

[0021] Figure 4 This is a schematic diagram of the cooperative structure of the rotating lifting tube and the lifting fixed rod of the present invention;

[0022] Figure 5 This is a schematic diagram of the guide plate structure of the present invention;

[0023] Figure 6 This is a schematic diagram of the cooperation structure between the lifting frame and the telescopic rod of the present invention;

[0024] Figure 7 This is a schematic diagram of the guide positioning block structure and its mating structure according to the present invention;

[0025] Figure 8 This is a schematic diagram of the guide positioning block structure of the present invention;

[0026] Figure 9 This is a schematic diagram of the cooperation structure between the lifting fixing rod and the support frame of the present invention;

[0027] Figure 10 This is a schematic diagram of the spraying mechanism of the spraying box of the present invention during spraying;

[0028] Figure 11 This is a schematic diagram of the cooperative structure of the spray box mechanism of the present invention when transferring cartons;

[0029] Figure 12 A schematic diagram of the structure in which the guiding and positioning block of the invention cooperates with the cardboard box;

[0030] In the diagram: 1. Bottom support; 2. Spraying box mechanism; 3. Wax spraying box mechanism; 4. Feed box; 5. Conveying box mechanism; 21. Box body; 22. Spraying assembly; 2201. Rotating lifting pipe; 2202. Lifting fixing rod; 2203. Support frame; 2204. Internal spraying pipe; 2205. Lifting frame; 2206. External spraying pipe; 2207. Step; 2208. Lifting hydraulic cylinder; 2209. Pulley; 2210. Drive motor; 2211. Sliding hole; 2212. Telescopic rod; 2213. Compression spring; 2214. 2215 slider; 2216 sliding pin; 2217 guide plate; 2218 rectangular slide groove; 2219 guide rod; 2220 spring; 2221 guide wedge block; 2222 guide plate; 2222 positioning plate; 2223 fixing plate; 2224 guide positioning block; 2225 inclined edge; 2226 air inlet; 2101 feed inlet; 41 door panel; 42 exhaust pipe; 43 first conveyor frame; 51 second conveyor frame; 52 third conveyor frame; 53 discharge port; 54 heating pipe; 55 slotted; 56 cardboard box; 100. Detailed Implementation

[0031] The technical solution of this application will be further described in detail below with reference to specific embodiments.

[0032] The embodiments of this application are described in detail below. Examples of these embodiments are shown 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 are only used to explain this application, and should not be construed as limiting this application.

[0033] like Figure 1 As shown, a surface moisture-resistant treatment device for cold chain transport packaging cartons includes a bottom support 1, a spraying box mechanism 2 is provided at one end of the upper part of the bottom support 1, a wax spraying box mechanism 3 is provided at the other end of the upper part of the bottom support 1, a feeding box 4 is provided at the upper part of the wax spraying box mechanism 3, and a conveying box mechanism 5 is provided at the middle position of the upper part of the bottom support 1. The spraying box mechanism 2, the wax spraying box mechanism 3, the feeding box 4 and the conveying box mechanism 5 are internally connected.

[0034] like Figure 1-4Both the spraying box mechanism 2 and the wax spraying box mechanism 3 include a spraying component 22 and a box body 21. The spraying component 22 is located inside the box body 21. The spraying component 22 includes a rotating lifting tube 2201. A lifting fixing rod 2202 is rotatably arranged inside the rotating lifting tube 2201, passing through both ends of the rotating lifting tube 2201. A support frame 2203 is fixedly arranged at the upper end of the lifting fixing rod 2202. An internal spraying tube 2204 is fixedly arranged on one side of the upper end of the rotating lifting tube 2201. A lifting frame 2206 is slidably arranged up and down on the outside of the rotating lifting tube 2201 through a key 2205 and a keyway. The upper end of the lifting frame 2206 is provided with There is an external spray pipe 2207. A step 2208 is provided on the lower side of the middle part of the rotating lifting pipe 2201 near the lifting frame 2206. The bottom end of the lifting fixing rod 2202 is connected to the lifting hydraulic cylinder 2209, which is fixed on the box body 21. The lower end of the rotating lifting pipe 2201 is provided with a pulley 2210 that slides up and down through a key 2205 and a keyway. The pulley 2210 is rotatably mounted on the box body 21. The pulley 2210 is connected to a drive motor 2211, which is fixed on the box body 21. Both the internal spray pipe 2204 and the external spray pipe 2207 are L-shaped.

[0035] like Figure 3 , 5 The lifting frame 2206 has a sliding hole 2212 inside, and a telescopic rod 2213 is slidably installed inside the sliding hole 2212. A compression spring 2214 is installed between the telescopic rod 2213 and the lifting frame 2206 and inside the sliding hole 2212. A slider 2215 is slidably installed on the telescopic rod 2213. A sliding pin 2216 is fixedly installed on the upper side of one end of the slider 2215. A guide plate 2217 is installed on the upper side of the housing 21. A rectangular slide groove 2218 is provided on the lower side. A sliding pin 2216 is slidably disposed inside the rectangular slide groove 2218. A guide rod 2219 is fixedly disposed on one side of the sliding pin 2216. The guide rod 2219 is slidably connected to the telescopic rod 2213. A spring 2220 is disposed on the outside of the guide rod 2219 and between the sliding pin 2216 and the telescopic rod 2213. An external spray pipe 2207 is disposed on the slider 2215. The corners of the rectangular slide groove 2218 are all provided with rounded corners.

[0036] like Figure 3 As shown, the external spraying pipe 2207 is rotatably mounted on the slider 2215, and a guide wedge block 2221 is fixedly mounted at the lower end of the external spraying pipe 2207. A guide plate 2222 is fixedly mounted on the lifting frame 2206 at the position corresponding to the guide wedge block 2221. A positioning plate 2223 is fixedly mounted on the inner side of the housing 21 below the lifting frame 2206.

[0037] like Figure 1 and 2As shown, the conveying box mechanism 5 includes a first conveyor frame 51, a second conveyor frame 52, and a third conveyor frame 53. The first conveyor frame 51 is located above the second conveyor frame 52, and the second conveyor frame 52 is located above the third conveyor frame 53. One end of the first conveyor frame 51 is located inside the feed box 4, and the other end of the first conveyor frame 51 is located inside the spraying box mechanism 2. One end of the second conveyor frame 52 is located inside the spraying box mechanism 2, and the other end of the second conveyor frame 52 is located inside the wax spraying box mechanism 3. One end of the third conveyor frame 53 is located inside the wax spraying box mechanism 3. A discharge port 54 is provided at the lower side of the conveying box mechanism 5 corresponding to the other end of the third conveyor frame 53. A heating pipe 55 is provided inside the conveying box mechanism 5 and below the third conveyor frame 53. The length of the second conveyor frame 52 inside the spraying box mechanism 2 is longer than the length of the first conveyor frame 51 inside the spraying box mechanism 2, and the length of the third conveyor frame 53 inside the wax spraying box mechanism 3 is longer than the length of the second conveyor frame 52 inside the wax spraying box mechanism 3. A feed inlet 41 is provided at the upper part of one end of the feed box 4. An openable door panel 42 is provided on the feed inlet 41. An exhaust pipe 43 is provided on one side of the feed box 4. An exhaust fan (not shown) is connected to the outside of the exhaust pipe 43 to exhaust the interior of this application. It can not only extract dust and spray atomized paint, but also collect hot air through the feed box 4, which is beneficial to the initial treatment of the carton. An air inlet 2101 is provided on one side of the box body 21 of the spray box mechanism 2. The first conveyor frame 51, the second conveyor frame 52 and the third conveyor frame 53 are all provided with slots 56 at the middle position along the conveying direction.

[0038] like Figure 3 , 7 As shown in Figure 8, a fixing plate 2224 is provided on the upper side of the housing 21 and inside the slot 56. A guide positioning block 2225 is fixedly provided on the upper end of the fixing plate 2224 and above the outer end of the second conveyor frame 52 and the third conveyor frame 53. The end side of the guide positioning block 2225 is wedge-shaped. The fixing plate 2224 is symmetrically arranged at the position of the slot 56. An inclined edge 2226 is provided on the upper outer side of the guide positioning block 2225.

[0039] like Figure 9 As shown, the support frame 2203 is rectangular or U-shaped.

[0040] like Figure 1-12 As shown, the specific working process of this embodiment is as follows:

[0041] like Figure 1 and 3As shown, the conveyor box mechanism 5 operates, with the conveyor belts of the first and third conveyor frames rotating counterclockwise and the conveyor belt of the second conveyor frame 52 rotating clockwise. Untreated cartons 100, with their openings facing down, are placed into the feed box 4 through the feed inlet 41. After preliminary treatment such as dust removal and preheating, the cartons 100 are conveyed through the first conveyor frame 51 into the spray coating box mechanism 2. When the cartons 100 enter the spray coating box mechanism 2, the support frame 2203 is located on the outer end of the first conveyor frame 51 and is lower than the conveyor belt of the first conveyor frame 51. Combined with the inertia of the first conveyor frame 51, the cartons 100 eventually fit onto the support frame 2203 (as shown). Figure 3 (As shown in the figure), the loading of the spray box mechanism 2 is completed.

[0042] After the material is loaded, the lifting hydraulic cylinder 2209 is activated. The lifting hydraulic cylinder 2209 pushes the lifting fixed rod 2202, which in turn rotates the lifting pipe 2201 to move upward. The rotation of the lifting pipe 2201 drives the lifting frame 2206 to move upward, eventually reaching the desired position. Figure 10 After the indicated state is reached, the lifting hydraulic cylinder 2209 stops. At this point, the top and sides of the carton 100 are relatively close to the external spray pipe 2207. Then, the drive motor 2211 is started, which drives the rotation of the lifting pipe 2201 through the pulley 2210. The rotation of the lifting pipe 2201 drives the rotation of the lifting frame 2206. Since the top of the sliding pin 2216 slides in the rectangular slide groove 2218, and the guide rod 2219, spring 2220, and slider 2215 are provided between the sliding pin 2216 and the lifting frame 2206, the rotation of the lifting frame 2206 can drive the sliding pin 2216 to slide along the rectangular track in the rectangular slide groove 2218. Opening the external spray pipe 2207 allows it to approach the outside of the carton 100 along the rectangular track and pass through the evenly distributed... The spray nozzles on the external spray pipe 2207 are opened to spray waterproof coating on the outside and top of the carton 100. Because the external spray pipe 2207 sprays the outside and top of the carton 100 at close range, the coating atomization is less, which can reduce coating waste and environmental pollution. At the same time, since the inside of the carton 100 is positioned by the support frame 2203, the carton 100 does not rotate. The rotation of the lifting pipe 2201 drives the internal spray pipe 2204 to spray the inside of the carton 100 through the spray nozzles evenly arranged on the internal spray pipe 2204. After the internal spray pipe 2204 and the external spray pipe 2207 have rotated once, the inside and outside of the carton 100 are sprayed simultaneously. The spraying speed is fast, the efficiency is high, and the space and area occupied by the mechanism are small.

[0043] After the spraying is completed, stop the drive motor 2211 and start the lifting hydraulic cylinder 2209. The lifting hydraulic cylinder 2209 drives the lifting fixed rod 2202, which in turn rotates the lifting pipe 2201 and the lifting frame 2206, causing them to move downwards until the mechanism reaches the desired position. Figure 11 After the lifting hydraulic cylinder 2209 stops, the support frame 2203 above the rotating lifting pipe 2201 disengages from the carton 100 and is positioned below the carton 100. One end of the carton 100 rests on the second conveyor frame 52, and the other end rests on the guide positioning block 2225. Due to the structural characteristics of the guide positioning block 2225, the cover plates on both sides of the carton 100 tilt and open to the sides, resting on the conveyor belt of the second conveyor frame 52. The front cover plate of the carton 100 tilts forward and rests on the conveyor belt of the second conveyor frame 52 due to the clockwise rotation of the conveyor belt of the second conveyor frame 52 during descent. The rear cover plate of the carton 100 tilts backward and rests on the guide positioning block 2225 due to the tilting edge 2226 of the guide positioning block 2225 and the clockwise rotation of the conveyor belt of the second conveyor frame 52, which gives the carton 100 a tendency to move. Figure 12 As shown, with the continued rotation of the conveyor belt of the second conveyor frame 52, the entire carton 100 will eventually fall onto the conveyor belt of the second conveyor frame 52, thus completing the transfer of the carton 100 onto the second conveyor frame 52. The cover plates at the opening of the carton 100 are all located on the outside of the carton 100, which prevents the paint sprayed on the outside of the cover plates from being touched and damaged. The carton 100 not only has an aesthetically pleasing appearance but also better waterproofing. It should be noted that the guide positioning block 2225 is located below the outer end of the carton 100. It not only guides the carton 100 so that all the cover plates can be flipped outwards, but also, because the carton 100 itself has a certain degree of elasticity, it can prevent the guide positioning block 2225 from being placed elsewhere. If the carton 100 descends directly through the guide positioning block 2225, the guide positioning block 2225 would become stuck inside the carton 100, preventing the transfer of the carton 100 from being completed. It should be noted that in this embodiment, the external spraying pipe 2207 can not only spray the exterior of the carton 100, but also, when the lifting frame 2206 descends, the guide plate 2222 on the lifting frame 2206 will detach from the lower end of the external spraying pipe 2207. Since the weight of the other end of the external spraying pipe 2207 is greater than the weight of the lower end, the external spraying pipe 2207 will rotate and tilt, causing the lower end of the external spraying pipe 2207 to abut against the telescopic rod 2213, while the other end of the external spraying pipe 2207 will descend a certain distance, forming a... Figure 12 As shown, before the spraying assembly 22 completes the transfer of the sprayed carton 100 to the second conveyor frame 52, the lowered end of the external spraying pipe 2207 is located at the end of the first conveyor frame 51, which can stop the next unprocessed carton that arrives in advance. This can prevent the unprocessed carton from falling onto the spraying assembly 22 before the sprayed carton 100 is transferred to the second conveyor frame 52, thus playing a safety role.

[0044] After the cardboard box 100 is coated and transferred to the second conveyor frame 52, it begins to be transported into the wax spraying box mechanism 3. Since the wax spraying box mechanism 3 in this embodiment also has a spraying component 22, its structure and working principle are consistent with the spraying component 22 of the spraying box mechanism 2. Because the wax spraying box mechanism 3 sprays pulverized wax powder, the spraying component 22 of the wax spraying box mechanism 3 differs from that of the spraying component 22 of the spraying box mechanism 2 only in size. The specific wax spraying process and the process of transferring the cardboard box 100 to the third conveyor frame 53 will not be described in detail here. After the cardboard box 100 is transferred to the third conveyor frame 53, a heating pipe 55 is installed below the third conveyor frame 53. The heating pipe 55 begins to heat the cardboard box 100 after wax spraying. The wax powder on the surface of the cardboard box 100 melts upon heating onto the inner and outer surfaces of the cardboard box. After cooling and drying, a uniform waterproof wax layer is formed. The spraying component 22, after completing both the coating and wax spraying, returns to its initial position (e.g., ...). Figure 3 (), waiting for the next carton 100 to be processed.

[0045] The working process and technology of this application are different from those of the prior art. This application first sprays a layer of liquid or colloidal coating with a certain degree of viscosity onto the cardboard box 100, and then sprays wax powder on the outside of the coating. The wax powder adheres to the outside of the coating. In this way, a waterproof cardboard box with two waterproof layers can be formed by heating only once. The process is simple, and the gaps in the cardboard box will also be filled by the coating and wax layers, which greatly increases the waterproof performance of the cardboard box 100.

[0046] The preferred embodiments of this application have been described in detail above, but this application is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this application.

Claims

1. A surface moisture-resistant treatment device for cold chain transport packaging cartons, characterized in that: Includes a bottom support (1), a spray box mechanism (2) is provided at one end of the upper part of the bottom support (1), a wax spray box mechanism (3) is provided at the other end of the upper part of the bottom support (1), a feed box (4) is provided at the upper part of the wax spray box mechanism (3), and a conveying box mechanism (5) is provided at the middle position of the upper part of the bottom support (1). The spray box mechanism (2), the wax spray box mechanism (3), the feed box (4) and the conveying box mechanism (5) are internally connected. Both the spraying box mechanism (2) and the wax spraying box mechanism (3) include a spraying component (22) and a box body (21). The spraying component (22) is located inside the box body (21). The spraying component (22) includes a rotating lifting tube (2201). A lifting fixing rod (2202) is rotatably arranged inside the rotating lifting tube (2201) and passes through both ends of the rotating lifting tube (2201). A support frame (2203) is fixedly arranged at the upper end of the lifting fixing rod (2202). An internal spraying tube (2204) is fixedly arranged on one side of the upper end of the rotating lifting tube (2201). A lifting frame (2206) is slidably arranged on the outer side of the rotating lifting tube (2201) through a key (2205) and a keyway. A lifting frame (2206) is arranged at the upper end of the lifting frame (2206). The external spraying pipe (2207) has a step (2208) on the lower side of the middle part of the rotating lifting pipe (2201) near the lifting frame (2206). The bottom end of the lifting fixing rod (2202) is connected to the lifting hydraulic cylinder (2209). The lifting hydraulic cylinder (2209) is fixed on the box (21). The lower end of the rotating lifting pipe (2201) is provided with a pulley (2210) that slides up and down through a key (2205) and a keyway. The pulley (2210) is rotatably mounted on the box (21). The pulley (2210) is connected to a drive motor (2211). The drive motor (2211) is fixed on the box (21). The internal spraying pipe (2204) and the external spraying pipe (2207) are both L-shaped. The drive motor (2211) drives the rotation of the lifting tube (2201) through the pulley (2210), and the lifting hydraulic cylinder (2209) pushes the lifting fixed rod (2202) to rotate the lifting tube (2201) upward. The spraying box mechanism (2) sprays a layer of liquid or colloidal coating with a certain degree of viscosity onto the cardboard box (100).

2. The surface moisture-resistant treatment device for cold chain transport packaging cartons according to claim 1, characterized in that: The lifting frame (2206) has a sliding hole (2212) inside, and a telescopic rod (2213) is slidably arranged inside the sliding hole (2212). A compression spring (2214) is arranged between the telescopic rod (2213) and the lifting frame (2206) and inside the sliding hole (2212). A slider (2215) is slidably arranged on the telescopic rod (2213). A sliding pin (2216) is fixedly arranged on the upper side of one end of the slider (2215). A guide plate (2217) is arranged on the upper side of the housing (21). The guide plate (2217) is provided with a rectangular slide groove (2218) on its lower side. The sliding pin (2216) is slidably disposed inside the rectangular slide groove (2218). A guide rod (2219) is fixedly disposed on one side of the sliding pin (2216). The guide rod (2219) is slidably connected to the telescopic rod (2213). A spring (2220) is disposed on the outside of the guide rod (2219) and between the sliding pin (2216) and the telescopic rod (2213). The external spray pipe (2207) is disposed on the slider (2215).

3. The surface moisture-resistant treatment device for cold chain transport packaging cartons according to claim 2, characterized in that: The external spray pipe (2207) is rotatably mounted on the slider (2215). A guide wedge block (2221) is fixedly mounted at the lower end of the external spray pipe (2207). A guide plate (2222) is fixedly mounted on the lifting frame (2206) at the position corresponding to the guide wedge block (2221). A positioning plate (2223) is fixedly mounted on the inner side of the box (21) and below the lifting frame (2206).

4. The surface moisture-resistant treatment device for cold chain transport packaging cartons according to claim 3, characterized in that: The conveyor box mechanism (5) includes a first conveyor frame (51), a second conveyor frame (52), and a third conveyor frame (53). The first conveyor frame (51) is located above the second conveyor frame (52), and the second conveyor frame (52) is located above the third conveyor frame (53). One end of the first conveyor frame (51) is located inside the feed box (4), and the other end of the first conveyor frame (51) is located inside the spray box mechanism (2). One end of the second conveyor frame (52) is located inside the spray box mechanism (2), and the other end of the second conveyor frame (52) is located inside the wax spray box mechanism (3). The third conveyor frame (51) is located above the feed box (4), and the second end of the second conveyor frame (52) is located inside the wax spray box mechanism (3). One end of the third conveyor (53) is located inside the wax spraying box mechanism (3), and the other end of the third conveyor (53) is provided with a discharge port (54) at the lower side of the conveying box mechanism (5). A heating pipe (55) is provided inside the conveying box mechanism (5) and below the third conveyor (53). The length of the second conveyor (52) inside the spraying box mechanism (2) is longer than the length of the first conveyor (51) inside the spraying box mechanism (2). The length of the third conveyor (53) inside the wax spraying box mechanism (3) is longer than the length of the second conveyor (52) inside the wax spraying box mechanism (3).

5. The surface moisture-resistant treatment device for cold chain transport packaging cartons according to claim 4, characterized in that: The feed box (4) has a feed inlet (41) at one end of its upper part. The feed inlet (41) has an openable door panel (42). The feed box (4) has an exhaust pipe (43) on one side. The spray box mechanism (2) has an air inlet (2101) on one side of its box body (21).

6. The surface moisture-resistant treatment device for cold chain transport packaging cartons according to claim 4, characterized in that: The first conveyor frame (51), the second conveyor frame (52) and the third conveyor frame (53) are all provided with slots (56) at the middle position along the conveying direction.

7. The surface moisture-resistant treatment device for cold chain transport packaging cartons according to claim 6, characterized in that: A fixing plate (2224) is provided on the upper side of the box (21) and inside the slot (56). A guide positioning block (2225) is fixedly provided on the upper end of the fixing plate (2224) and above the outer end of the second conveyor frame (52) and the third conveyor frame (53). The end side of the guide positioning block (2225) is wedge-shaped. The fixing plate (2224) is symmetrically arranged at the position of the slot (56). An inclined edge (2226) is provided on the upper outer side of the guide positioning block (2225).

8. A surface moisture-resistant treatment device for cold chain transport packaging cartons according to any one of claims 2-7, characterized in that: The corners of the rectangular slide (2218) are all rounded.

9. The surface moisture-resistant treatment device for cold chain transport packaging cartons according to claim 8, characterized in that: The support frame (2203) is rectangular or U-shaped.

Images