Humidity-adjustable packaging box gluing equipment and gluing process

Abstract

The invention relates to the field of gluing, and discloses humidity-adjustable packaging box gluing equipment and a gluing technology.The humidity-adjustable packaging box gluing equipment comprises a gluing assembly, the gluing assembly comprises a glue box, a gluing roller is arranged on one side of the glue box, a conveying roller and a distance sensor are arranged under the gluing roller, and a flow slowing block inclining downwards is arranged in the glue box; a scraping plate is horizontally arranged on one side, close to the glue spreading roller, of the bottom of the glue box, a set distance is formed between the scraping plate and the glue spreading roller, a liquid outlet pipe is arranged on one side of the glue box, a liquid inlet pipe is arranged above the glue box, a plurality of triangular flow guide plates are arranged on the scraping plate, and the bottom of the glue box is fixedly connected with the glue spreading roller. The multiple guide plates are obliquely arranged towards one side of the liquid outlet pipe, a humidifier is further arranged on one side of the gluing assembly, and a detection assembly used for detecting the curing state of the white latex is arranged on the latex box. The humidity can be automatically adjusted according to the white latex curing condition on the surface of the gluing roller.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of gluing, in particular to a humidity-adjustable packaging box gluing equipment and gluing process. BACKGROUND

[0002] In the production process of packaging boxes, different color patterns of packaging paper are pasted for aesthetic design, so it is necessary to coat glue on the surface of the packaging paper in advance before pasting the paper. At present, a roller coating glue machine is used to coat white latex on the surface of the packaging paper. After the glue roller rotates to coat one side of the paper, most of the glue will adhere to the paper due to the pores on the surface of the paper, the remaining glue on the glue roller is reduced, and the glue layer is thinned. White latex has the characteristics of easy solidification, and after the glue layer is thinned, it is more likely to solidify due to water evaporation. The surface of the glue roller is left with white latex solid, which causes the outer diameter of the glue roller to increase, the distance between the glue roller and the glue tank and the paper to decrease, resulting in problems such as reduced glue coating amount and paper jam. Therefore, during the process of coating the paper, a humidifier is needed to moisturize the glue roller. However, the humidifier produces water mist when humidifying, which interferes with the camera and makes it difficult to accurately capture the situation on the surface of the glue roller if an industrial camera is used to observe the solidification of the glue on the surface of the glue roller. Therefore, how to determine the solidification of white latex has become a difficulty.

[0003] In addition to the moisturizing work, in the working process of the roller coating glue machine, in order to prevent the white latex from solidifying in the glue box, a glue circulation structure is usually used, that is, the glue in the glue tank is pumped into the glue box, and then the glue in the glue box is pumped into the glue tank, and the glue in the glue box is in a dynamic balance state. However, due to the high viscosity of white latex, if the circulating pump has high power, the position of the extracted glue, the white latex drops quickly, and the remaining white latex is not enough to flow quickly to supplement the falling liquid level, the white latex liquid level in the glue box is uneven, which affects the thickness of the glue layer on the surface of the glue roller, and in severe cases, it even causes glue breakage; if the circulating pump has low power, the white latex circulating speed in the glue box is too low, which easily causes the glue layer surface to peel off or even solidify, and the circulation function fails. Therefore, it is necessary to strengthen the flowability of white latex in the glue box, both to prevent white latex from peeling off and solidifying, and not to cause obvious deviation of the white latex liquid level.

[0004] At the same time, due to the high viscosity of white latex, some bubbles generated during the circulation of white latex are difficult to overflow, and the bubbles are in a slow rising state in the glue, and will not float to the surface of the glue in a short time. Some small bubbles will even be suspended in the glue for a long time. If the bubbles are transferred to the glue roller, the bubbles will burst when coating the paper, which will form a hollow glue defect on the surface of the paper. If the glue defect position is just at the edge or corner of the paper, the paper and the packaging box will have quality problems such as edge lifting and corner lifting after pasting. Therefore, it is also a problem that needs to be solved to remove the bubbles in the white latex liquid in time when coating the glue. SUMMARY

[0005] The application aims to provide a humidity-adjustable packaging box gluing device and gluing process, and aims to solve the problems of poor flowability of white latex and difficulty in removing bubbles in the prior art.

[0006] The above technical objective of the application is achieved by the following technical scheme: a humidity-adjustable packaging box gluing device, comprising a gluing assembly, the gluing assembly comprising a glue box, one side of the glue box being provided with a gluing roller, a conveying roller and a distance sensor being arranged directly below the gluing roller, an inclined downward flow slowing block being arranged in the glue box, a scraper being horizontally arranged on the bottom of the glue box near one side of the gluing roller, the scraper and the gluing roller having a set distance therebetween, a liquid outlet pipe being arranged on one side of the glue box, a liquid inlet pipe being arranged above the glue box, a plurality of flow guide plates being arranged on the scraper, the flow guide plates being triangular, and the plurality of flow guide plates being arranged inclined to one side of the liquid outlet pipe, a humidifier being further arranged on one side of the gluing assembly, and a detection assembly for detecting the solidification state of white latex being arranged on the glue box.

[0007] Through the above technical scheme, the white latex enters the glue box through the liquid inlet pipe and falls onto the flow slowing block, and flows downward along the flow slowing block to above the scraper. Since the white latex flows from a high place to a low place, it has a certain flow rate at this time. After the white latex flows onto the scraper, it flows toward one side of the liquid outlet pipe under the action of the flow guide plates. When the glue on the top of the scraper reaches a certain liquid level, the gluing roller starts to rotate, and the glue is transferred to above the gluing roller. The scraper scrapes the glue to a set thickness. Since the glue is still in a flowing state, the glue forms a certain friction with the gluing roller. If the glue contains bubbles, the bubbles are broken under the action of the horizontal shear force and do not adhere to the surface of the gluing roller. The gluing roller rotates to press the white latex onto the surface of the packaging paper. At the same time, since the white latex is in a flowing state in the glue box, the circulation speed of the white latex in the entire system is accelerated, preventing the white latex from solidifying and caking in the glue box. The detection assembly monitors the glue on the surface of the gluing roller in real time. If the glue is detected to be solidified, an electrical signal is transmitted to the humidifier, and the humidifier increases the power to humidify the surface of the metal roller, preventing the glue from further solidifying.

[0008] It should be understood that the structure for pumping the glue from the glue box into the liquid inlet pipe and then into the liquid inlet pipe generally uses existing structures such as a circulating pump and a glue storage barrel, and will not be described in detail here.

[0009] The further arrangement of the present application is that the detection assembly comprises a rotating rod arranged on the glue box, the length direction of the rotating rod is parallel to the axis of the glue roller, a contact pin is arranged on the rotating rod, an industrial camera is arranged above the contact pin, a first motor is arranged at one end of the rotating rod, the contact pin is perpendicular to the rotating rod, two cleaning rollers are arranged on one side of the rotating rod, the two cleaning rollers have a set distance, and elastic rubber is coated on the cleaning rollers.

[0010] Through the above technical scheme, after the distance sensor detects that the packaging surface paper is coated, the rotation speed of the glue roller is calculated, when the area where the glue roller contacts the packaging surface paper rotates to the vicinity of the detection assembly, the first motor controls the rotation of the rotating rod, the rotating rod drives the rotation of the contact pin, the end of the contact pin contacts the surface of the glue roller, if the white latex has not solidified, a length of glue filament will be formed between the contact pin and the surface of the glue roller, if the white latex begins to solidify, the length of the glue filament will be obviously shortened or even no glue filament will be generated, the industrial camera judges the solidification of the glue on the surface of the glue roller according to the filament condition, and the humidifying power of the humidifier is adjusted, which is simple and convenient, after the contact pin is detected, the contact pin is rotated to between the two cleaning rollers, under the action of friction, the two cleaning rollers rotate to wipe off the glue on the surface of the contact pin, and then the first motor controls the reset of the contact pin.

[0011] The further arrangement of the present application is that the detection assembly comprises a laser receiver arranged on the glue box, the middle part of the glue roller is transparent, a mounting rod is horizontally arranged in the glue roller, the mounting rod is coaxially arranged with the glue roller, and a laser emitter is arranged on the mounting rod.

[0012] Through the above technical scheme, the glue roller rotates and the mounting rod does not rotate, when the area where the glue roller contacts the packaging surface paper rotates to the vicinity of the detection assembly, the laser emitter emits laser which passes through the transparent part of the glue roller and is received by the laser receiver, when the glue on the surface of the glue roller is scraped to a certain thickness by the scraper, the glue layer is very thin and the light transmittance of the glue layer is high, when the glue roller covers the glue on the packaging surface paper, since there is a gap on the surface of the packaging surface paper, the glue layer on the glue roller appears to be frosted glass, which greatly influences the transmittance of laser, when the white latex begins to solidify, the resin molecular chain begins to form a network structure, the light transmittance of the glue layer is re-increased, the transmittance of laser is increased, and therefore the laser can be received by the laser receiver, the solidification of the glue is judged according to the signal strength received by the laser receiver, and the humidifying power of the humidifier is controlled.

[0013] The further arrangement of the present application is that a pressing block is arranged below the flow slowing block, a pad block is arranged below the pressing block, the scraper is located between the pressing block and the pad block, and the side surface of the flow slowing block, the top surface and side surface of the pressing block and the top surface of the scraper form a stepped structure.

[0014] By the technical scheme, the pressing block and the pad block clamp the scraper, prevent the scraper from vibrating when scraping glue, affect the uniformity of the glue layer on the surface of the glue roller, and meanwhile, the white latex falls on the slow flow block and spreads and flows downward, at this time, larger bubbles break on the slow flow block, then the glue flows from the slow flow block to the top of the pressing block, and then flows downward to the top of the scraper from the top of the pressing block, a stepped slow flow effect is formed, and the bubbles in the white latex overflow in the flowing process, so that a part of the bubbles are reduced.

[0015] Further arrangement of the present application is that the glue box is provided with a guide hole and an adjusting threaded hole on the side away from the glue roller, the pressing block is provided with a guide rod matched with the guide hole, the pressing block is provided with a limiting slot, and the adjusting threaded hole is provided with an adjusting bolt, and the end of the adjusting bolt is provided with a limiting plate in the limiting slot.

[0016] By the technical scheme, the distance between the scraper and the glue roller can be directly controlled by rotating the adjusting bolt, so that the thickness of the glue layer on the surface of the glue roller is controlled, and the operation is simple and convenient.

[0017] Further arrangement of the present application is that the humidifier comprises a humidifying pipe, the humidifying pipe is inclined upward, one end of the humidifying pipe close to the glue roller is closed, a plurality of humidifying holes are formed in the humidifying pipe, and the humidifying holes are opposite to the glue roller.

[0018] By the technical scheme, the water mist generated by the humidifier is sprayed to the surface of the glue roller through the humidifying pipe and the humidifying holes for humidification, if small liquid drops in the water mist gather into large liquid drops in the humidifying pipe, the large liquid drops gather into water flow, and the water flow falls along the inclined humidifying pipe, so that the large liquid drops and the water flow are prevented from falling on the glue roller and the packaging surface paper.

[0019] Further arrangement of the present application is that a water blocking ring is arranged around the humidifying hole, and the water blocking ring is located in the humidifying pipe.

[0020] By the technical scheme, when the large liquid drops and the water flow flow to the vicinity of the humidifying hole, the water blocking ring blocks the large liquid drops and the water flow, so that the large liquid drops and the water flow flow back around the humidifying hole, and the large liquid drops and the water flow are further prevented from falling on the glue roller and the packaging surface paper.

[0021] A packaging box glue coating process with adjustable humidity comprises the following steps: S1, white latex is injected into the glue box through the liquid inlet pipe, the rotating speed of the glue roller is set, the glue roller and the conveying roller rotate synchronously, and a layer of white latex is gradually adhered to the glue roller; S2, the packaging surface paper is conveyed from one side of the glue roller to the space between the glue roller and the conveying roller, the glue roller presses the glue on the packaging surface paper, and the packaging surface paper covers the distance sensor, at this time, the distance sensor receives the first signal. S3, when the packaging paper is conveyed to the other side of the glue roller after the coating is completed between the glue roller and the conveying roller, the packaging paper no longer covers the distance sensor, at this time the distance sensor receives the second signal; S4, when the distance sensor receives the second signal, the time when the area of the glue roller in contact with the packaging paper moves to the side of the detection assembly is calculated by the rotating speed of the glue roller; S5, when the area of the glue roller in contact with the packaging paper moves to the side of the detection assembly, the detection assembly starts to work to detect the solidification of the white latex in the area in contact with the packaging paper in S2; S6, according to the detection result of S5, if the white latex on the glue roller has solidification, the humidifier starts to increase the humidifying power, and if the white latex on the glue roller has no solidification, the humidifying power remains unchanged.

[0022] Compared with the prior art, the beneficial effects of the present application are that: 1. The white latex flows from high to low along the buffer block under the action of the buffer block and the guide plate, at this time it has a certain flow rate, and after flowing onto the scraper, it flows to the side of the liquid outlet pipe under the action of the guide plate, thereby accelerating the circulation speed of the glue in the glue box.

[0023] 2. The glue near the scraper is in a flowing state, and the glue forms a certain friction with the glue roller, if the glue contains bubbles, the bubbles are broken under the action of the horizontal shear force, and will not adhere to the surface of the glue roller.

[0024] 3. The present application sets a distance sensor and a detection assembly, determines whether the packaging paper is coated by the distance sensor, and then calculates the time when the area of the glue roller in contact with the packaging paper moves to the vicinity of the detection assembly by the rotating speed of the glue roller, detects the solidification of the glue on the surface of the glue roller by the detection assembly, and adjusts the power of the humidifier according to the detection result, thereby achieving higher automation. BRIEF DESCRIPTION OF DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0026] Figure 1 is a schematic diagram of the overall structure of embodiment one in the present application; Figure 2 is another perspective view of the structure of embodiment one in the present application; Figure 3 is a schematic diagram of the position of the glue box and the glue roller in embodiment one in the present application; Figure 4 is Figure 3 is an enlarged view of part A in figure 1; Figure 5 is a structural schematic diagram of the scraper and the flow guide plate in the embodiment one of the present application; Figure 6 is an exploded structural schematic diagram of the flow slowing block, the pressing block, the scraper and the flattening block in the embodiment one of the present application; Figure 7 is a structural schematic diagram of the humidifying pipe in the embodiment one of the present application; Figure 8 is a structural schematic diagram of the detection assembly in the embodiment one of the present application; Figure 9 is a structural schematic diagram of the detection assembly in the embodiment two of the present application.

[0027] BRIEF DESCRIPTION OF DRAWINGS: 1, gluing assembly; 1a, glue box; 1a1, guide hole; 1a2, adjusting threaded hole; 1b, gluing roller; 1c, flow slowing block; 1d, scraper; 1d1, flow guide plate; 2, conveying roller; 3, distance sensor; 4, liquid outlet pipe; 5, liquid inlet pipe; 6, humidifier; 6a, humidifying pipe; 6a1, humidifying hole; 6a2, water retaining ring; 7, rotating rod; 7a, contact pin; 7b, industrial camera, 7c, first motor; 7d, cleaning roller; 8, mounting rod; 8a, laser receiver; 8b, laser emitter; 9, pressing block; 9a, limiting groove; 10, flattening block; 11, guide rod; 12, adjusting bolt; 12a, limiting plate. DETAILED DESCRIPTION

[0028] The technical solutions of the present application will be described clearly and completely below in combination with the drawings and specific embodiments. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments of the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0029] Embodiment one: The present application provides a humidity adjustable type packaging box gluing equipment and gluing process, as shown in Figure 1 , which comprises a gluing assembly 1, the gluing assembly 1 comprises a glue box 1a, one side of the glue box 1a is provided with a liquid outlet pipe 4, the upper part of the glue box 1a is provided with a liquid inlet pipe 5, and one side of the glue box 1a is provided with a gluing roller 1b.

[0030] As shown in Figure 2 , a conveying roller 2 and a distance sensor 3 are arranged directly below the gluing roller 1b.

[0031] As Figures 3 to 5 shown, the glue box 1a is provided with an inclined downward slow flow block 1c, the bottom of the glue box 1a is horizontally provided with a scraper 1d near one side of the glue roller 1b, the scraper 1d has a set distance with the glue roller 1b, which needs to be set according to the viscosity of the glue and the required thickness of the glue, and the scraper 1d is provided with a plurality of guide plates 1d1, the guide plates 1d1 are triangular, and the plurality of guide plates 1d1 are inclined to one side of the liquid outlet pipe 4.

[0032] As Figure 4 and Figure 6 shown, the slow flow block 1c is provided below with a pressing block 9, the pressing block 9 is provided below with a pad block 10, the scraper 1d is located between the pressing block 9 and the pad block 10, the side surface of the slow flow block 1c, the top surface and side surface of the pressing block 9, and the top surface of the scraper 1d form a stepped structure.

[0033] As Figure 6 shown, the glue box 1a is provided with a guide hole 1a1 and an adjusting threaded hole 1a2 away from the glue roller 1b, the pressing block 9 is provided with a guide rod 11 matched with the guide hole 1a1, the pressing block 9 is provided with a limiting groove 9a, the adjusting threaded hole 1a2 is provided with an adjusting bolt 12, the end of the adjusting bolt 12 is provided with a limiting plate 12a, the limiting plate 12a is located in the limiting groove 9a, and the limiting plate 12a can rotate in the limiting groove 9a.

[0034] As Figure 1 and Figure 7 shown, the glue applying assembly 1 is further provided with a humidifier 6 on one side, the humidification principle is that the water droplets are vibrated into water mist by the ultrasonic ceramic vibrator common in the prior art, the humidifier 6 is installed with a humidification pipe 6a, the water mist is sent into the humidification pipe 6a by the fan, the humidification pipe 6a is inclined upward, the end of the humidification pipe 6a away from the humidifier 6 body is closed, a plurality of humidification holes 6a1 are formed on the humidification pipe 6a, the humidification holes 6a1 are opposite to the glue roller 1b, the humidification holes 6a1 are provided with a water retaining ring 6a2, the water retaining ring 6a2 is located in the humidification pipe 6a, the water mist falls on the surface of the glue roller 1b through the humidification holes 6a1 for humidification, when the water droplets in the humidification pipe 6a are gathered into large particles and water flow, the water flow flows back to the humidifier 6 body along the humidification pipe 6a bypassing the humidification holes 6a1.

[0035] As Figure 8As shown, the glue box 1a is provided with a detection assembly for detecting the curing state of the white latex, the detection assembly comprising a rotating rod 7 provided on the glue box 1a, the length direction of the rotating rod 7 being parallel to the axis of the glue roller 1b, a contact pin 7a being provided on the rotating rod 7, an industrial camera 7b being provided above the contact pin 7a, a first motor 7c being provided at one end of the rotating rod 7, the contact pin 7a being perpendicular to the rotating rod 7, two cleaning rollers 7d being provided on one side of the rotating rod 7, the two cleaning rollers 7d having a set distance therebetween, and the cleaning rollers 7d being covered with elastic rubber.

[0036] The working process and working principle of the embodiment are as follows: First, the adjusting bolt 12 is twisted to make the scraper 1d adhere to the surface of the glue roller 1b, then the white latex in the glue bucket is pumped into the liquid inlet pipe by using a circulating pump, the glue water flows over the slow flow block 1c, the glue water spreads on the slow flow block 1c to form a thin layer, at this time, the large bubbles generated during the extraction of the glue water directly overflow, then the glue water flows downward from the slow flow block 1c, flows to the upper side of the pressing block 9 from the side of the slow flow block 1c, and then flows to the upper side of the scraper 1d from the side of the pressing block 9, at this time, the glue water is still in a thin layer state, and the bubbles in the glue water are further overflowed and removed, since the glue water contacts the guide plate 1d1, and since the glue water has a certain flow rate at this time, under the action of the guide plate 1d1, the liquid flow toward the liquid inlet pipe 5 is generated. At this time, the liquid inlet speed is controlled to be greater than the liquid outlet speed, the white latex forms a certain liquid level above the scraper 1d, after the liquid level reaches a certain height, the liquid inlet speed is adjusted to be equal to the liquid outlet speed, the white latex enters the glue bucket through the liquid outlet pipe 4, the white latex in the glue bucket is extracted into the liquid inlet pipe 5 again, the white latex in the whole system reaches a dynamic balance, preventing the white latex from curing, since the glue water forms a liquid flow in the glue box 1a, the circulation speed in the whole system is also increased, effectively preventing the curing of the glue water in the glue box 1a.

[0037] Then the glue roller 1b and the transmission roller 2 start to rotate, in order to ensure that the glue roller 1b and the transmission roller 2 rotate synchronously and reversely and have the same angular velocity, the gear on the glue roller 1b can be driven to rotate by the motor, and then the gear on the transmission roller 2 is driven to rotate by the gear on the glue roller 1b, so that the synchronous and reverse rotation effect is realized. At this time, the surface of the glue roller 1b is in contact with the glue above the scraper 1d, and the glue adheres to the surface of the glue roller 1b. With the rotation of the glue roller 1b, the scraper 1d scrapes the glue on the surface of the glue roller 1b into a thin glue layer. The thickness of the glue layer can be adjusted by further adjusting the distance between the scraper 1d and the surface of the glue roller 1b by twisting the adjusting bolt 12. Since the glue flow is flowing to the glue outlet pipe side, the flow direction is the axial direction of the glue roller 1b. However, when the scraper 1d scrapes the glue on the surface of the glue roller 1b, the glue is subjected to a tangential force on the surface of the glue roller 1b. Therefore, the force generated by the flow direction is perpendicular to the force generated by the scraper 1d and the glue roller 1b on the glue, and a shear force is formed between the two forces, which breaks the bubbles adhering to the surface of the glue roller 1b and prevents the bubbles from causing hollow defects on the surface of the packaging paper.

[0038] Then the packaging paper is sent to the transmission roller 2 and the glue roller 1b by using a conveyor belt and other mechanisms. The glue roller 1b and the transmission roller 2 rotate synchronously and reversely, and the packaging paper is conveyed from one side of the conveyor belt to the other side of the conveyor belt. When the packaging paper passes directly below the glue roller 1b, the glue on the surface of the glue roller 1b is pressed onto the surface of the packaging paper. The outer diameter of the glue roller 1b is significantly larger than the length of the packaging paper, and only one area of the surface of the glue roller 1b is in contact with the packaging paper. The glue layer on the area of the glue roller 1b in contact with the packaging paper (i.e., the contact area) quickly thins. The glue on other areas of the surface of the glue roller 1b is thinner than the glue layer on the contact area, so only the curing condition of the glue on the contact area needs to be detected.

[0039] The distance sensor 3 is covered by the packaging paper, and a first electric signal is obtained when the packaging paper enters between the glue roller 1b and the transmission roller 2. When the packaging paper is separated from the glue roller 1b and the transmission roller 2 after being coated, the distance sensor 3 is no longer covered by the packaging paper, and a second electric signal is obtained. By the time interval between the two electric signals and the rotation speed of the glue roller 1b, the length of the packaging paper and the length of the contact area can be calculated, and the time when the contact area moves to the vicinity of the detection assembly can also be calculated.

[0040] When the contact area moves to the vicinity of the contact needle 7a, the first motor 7c controls the contact needle 7a to rotate. The end of the contact needle 7a contacts the surface of the contact area and then quickly separates. If the glue has not cured at this time, a certain length of glue string will be formed between the contact needle 7a and the contact area. If the glue begins to cure and its fluidity is insufficient, the length of the glue string will quickly shorten or even no string will be formed. The glue stringing situation is photographed by the industrial camera 7b. If the glue begins to cure, the humidifier 6 is controlled by an electrical signal to increase the humidification power and slow down the curing speed of the glue.

[0041] A humidity-adjustable adhesive coating process for packaging boxes includes the following steps: S1. White glue is injected into glue box 1a through liquid inlet pipe 5. The rotation speed of coating roller 1b is set. Coating roller 1b and conveyor roller 2 rotate synchronously. A layer of white glue gradually adheres to coating roller 1b. S2. The packaging paper is conveyed from one side of the glue coating roller 1b to between the glue coating roller 1b and the conveyor roller 2. The glue coating roller 1b presses the glue onto the packaging paper. The packaging paper covers the distance sensor 3. At this time, the distance sensor 3 receives the first signal. S3. When the packaging paper is coated between the coating roller 1b and the conveying roller 2 and is conveyed to the other side of the coating roller 1b, the packaging paper no longer covers the distance sensor 3. At this time, the distance sensor 3 receives a second signal. S4. When the distance sensor 3 receives the second signal, the time it takes for the area of ​​the glue coating roller 1b in contact with the packaging paper to rotate to the side of the detection component is calculated based on the rotation speed of the glue coating roller 1b. S5. When the area on the coating roller 1b that is in contact with the packaging paper moves to one side of the detection component, the detection component starts to work and performs white glue curing detection on the area in contact with the packaging paper in S2. S6. Based on the test results of S5, if the white glue on the coating roller 1b has cured, the humidifier 6 will start to increase the humidification power; if the white glue on the coating roller 1b has not cured, the humidification power will remain unchanged.

[0042] Example 2: The structure differs from that of Embodiment 1 in that, as Figure 9 As shown, the detection assembly includes a laser receiver 8a disposed on the glue box 1a, a transparent part in the middle of the glue coating roller 1b, the transparent part being annular and coaxial with the glue coating roller 1b, a mounting rod 8 horizontally disposed inside the glue coating roller 1b, the mounting rod 8 being coaxial with the glue coating roller 1b, and a laser emitter 8b disposed on the mounting rod 8. When the glue coating roller 1b rotates, the mounting rod 8 does not rotate.

[0043] The difference between the working principle of the embodiment one and the embodiment two is that the method of detecting the glue curing condition of the contact area is different. The glue roller 1b rotates and the mounting rod 8 does not rotate. When the area of the glue roller 1b in contact with the packaging face paper rotates to the vicinity of the detection assembly, the laser emitter 8b emits laser light which is received by the laser receiver 8a through the transparent part of the glue roller 1b. When the doctor blade 1d scrapes the glue on the surface of the glue roller 1b to a certain thickness, the glue layer is very thin, so the light transmittance of the glue layer is higher at this time. When the glue roller 1b covers the glue on the packaging face paper, since there are gaps on the surface of the packaging face paper, the glue layer on the coating area of the glue roller 1b presents a ground glass state, which greatly reduces the transmittance of the laser light. When the white latex begins to cure, the resin molecular chain begins to form a network structure, and the glue layer becomes transparent again. The light transmittance of the glue layer will gradually recover, so the laser light can be received by the laser receiver 8a. The strength of the signal received by the laser receiver 8a can be used to judge the curing condition of the glue. If the received signal is strong, it proves that the glue layer begins to cure, and the humidification power needs to be increased. If the received signal is weak, it proves that the glue layer is still in a ground glass state and has not cured, so the humidification power does not need to be increased.

[0044] It should be noted that the embodiments in the specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts of each embodiment can be referred to each other.

[0045] The above description is only a description of the preferred embodiments of the present application, and does not limit the scope of the present application in any way. Any modification or modification of the above disclosure made by a person skilled in the art belongs to the protection scope of the claims.

Claims

1. A humidity-adjustable packaging box gluing device, characterized by: The application relates to a rubber coating assembly (1) which comprises a rubber box (1a) provided with a rubber coating roller (1b) on one side, a conveying roller (2) and a distance sensor (3) arranged below the rubber coating roller (1b), a slow-flow block (1c) arranged in the rubber box (1a) and inclined downward, a scraper (1d) horizontally arranged on the bottom of the rubber box (1a) and close to one side of the rubber coating roller (1b), a distance being provided between the scraper (1d) and the rubber coating roller (1b), a liquid outlet pipe (4) arranged on one side of the rubber box (1a), a liquid inlet pipe (5) arranged above the rubber box (1a), a plurality of flow guide plates (1d1) arranged on the scraper (1d), the flow guide plates (1d1) being triangular, and the flow guide plates (1d1) being arranged on one side of the liquid outlet pipe (4) and inclined, and a humidifier (6) arranged on one side of the rubber coating assembly (1), and a detection assembly for detecting the curing state of white latex is arranged on the rubber box (1a).

2. The equipment for gluing the humidity-adjustable packaging box according to claim 1, characterized in that: The detection assembly comprises a rotating rod (7) arranged on the rubber box (1a), the length direction of the rotating rod (7) is parallel to the axis of the rubber coating roller (1b), a contact pin (7a) is arranged on the rotating rod (7), an industrial camera (7b) is arranged above the contact pin (7a), a first motor (7c) is arranged at one end of the rotating rod (7), the contact pin (7a) is perpendicular to the rotating rod (7), two cleaning rollers (7d) are arranged on one side of the rotating rod (7), a distance is provided between the two cleaning rollers (7d), and elastic rubber is coated on the cleaning rollers (7d).

3. The equipment for gluing the humidity-adjustable packaging box according to claim 1, characterized in that: The detection assembly comprises a laser receiver (8a) arranged on the rubber box (1a), the middle part of the rubber coating roller (1b) is transparent, a mounting rod (8) is horizontally arranged in the rubber coating roller (1b), the mounting rod (8) is coaxially arranged with the rubber coating roller (1b), and a laser emitter (8b) is arranged on the mounting rod (8).

4. The equipment for gluing the humidity-adjustable packaging box according to claim 1, characterized in that: A pressing block (9) is arranged below the slow-flow block (1c), a pad block (10) is arranged below the pressing block (9), the scraper (1d) is located between the pressing block (9) and the pad block (10), and the side surface of the slow-flow block (1c), the top surface and side surface of the pressing block (9) and the top surface of the scraper (1d) form a stepped structure.

5. The humidity-adjustable packaging box gluing device according to claim 4, characterized in that: A guide hole (1a1) and an adjusting threaded hole (1a2) are arranged on one side of the rubber box (1a) away from the rubber coating roller (1b), a guide rod (11) matched with the guide hole (1a1) is arranged on the pressing block (9), a limiting groove (9a) is arranged on the pressing block (9), an adjusting bolt (12) passes through the adjusting threaded hole (1a2), a limiting plate (12a) is arranged at the end of the adjusting bolt (12), and the limiting plate (12a) is located in the limiting groove (9a).

6. The humidity-adjustable packaging box gluing device according to claim 1, characterized in that: The humidifier (6) comprises a humidifying pipe (6a) which is inclined upward, the humidifying pipe (6a) is closed at one end close to the glue roller (1b), a plurality of humidifying holes (6a1) are formed on the humidifying pipe (6a), and the humidifying holes (6a1) are opposite to the glue roller (1b).

7. The humidity-adjustable packaging box gluing device according to claim 6, characterized in that: A water retaining ring (6a2) is arranged at the periphery of the humidifying hole (6a1), and the water retaining ring (6a2) is located in the humidifying pipe (6a).

8. A process for applying glue to a product using the humidity-adjustable packaging box according to any one of claims 1 to 7, characterized in that, The method comprises the following steps: S1, injecting white latex into the glue box (1a) through the liquid inlet pipe (5), setting the rotating speed of the glue roller (1b), and rotating the glue roller (1b) and the conveying roller (2) synchronously, so that a layer of white latex is gradually adhered to the glue roller (1b); S2, conveying the packaging paper from one side of the glue roller (1b) to the position between the glue roller (1b) and the conveying roller (2), and the glue roller (1b) covers the glue on the packaging paper, so that the packaging paper covers the distance sensor (3), and the distance sensor (3) receives the first signal at this time; S3, when the packaging paper is conveyed to the other side of the glue roller (1b) after being coated between the glue roller (1b) and the conveying roller (2), the packaging paper no longer covers the distance sensor (3), and the distance sensor (3) receives the second signal at this time; S4, when the distance sensor (3) receives the second signal, the time when the area of the glue roller (1b) in contact with the packaging paper rotates to the side of the detection assembly is calculated according to the rotating speed of the glue roller (1b); S5, when the area of the glue roller (1b) in contact with the packaging paper rotates to the side of the detection assembly, the detection assembly starts to work, and the white latex solidification detection of the area in contact with the packaging paper in S2 is performed; S6, according to the detection result of S5, if the white latex on the glue roller (1b) has solidification, the humidifier (6) starts to increase the humidifying power, and if the white latex on the glue roller (1b) has no solidification, the humidifying power remains unchanged.

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