Corrugated paper production indentation device and indentation process

Abstract

The present application provides a kind of corrugated paper production indentation device and indentation process, including machine base, transport mechanism, indentation mechanism and steam mechanism;Indentation mechanism includes upper and lower corrugated roller rotatably arranged between support seat, and corrugated roller assembly is respectively arranged in upper and lower corrugated roller;The tooth groove of lower corrugated roller is provided with steam groove, and the end of corrugated tooth of upper corrugated roller is provided with suction groove, and negative pressure component is connected to upper corrugated roller.The indentation process includes: steam generated by steam mechanism is used to heat and humidify paperboard lower surface through steam groove, and excess steam and condensed water are removed through suction groove by negative pressure component, and indentation forming is completed by upper and lower corrugated roller meshing and extruding.The present application forms steam directional penetration channel by the upper and lower corresponding arrangement of steam groove and suction groove, realizes the synchronous operation of indentation and heating and humidification, effectively prevents paperboard burst, and removes excess moisture in time by negative pressure suction, avoids paperboard softening, improves indentation quality and paperboard strength.

Description

Technical Field

[0001] This invention relates to the field of corrugated paper production technology, and in particular to a corrugated paper production creasing device and creasing process. Background Technology

[0002] During the production of corrugated cardboard boxes, the corrugated cardboard needs to be creasing to facilitate subsequent folding and shaping into packaging boxes. The quality of creasing directly affects the forming accuracy, stacking strength, and appearance quality of the boxes. Because corrugated cardboard is relatively brittle, cracks (commonly known as "bursting lines") are easily generated on the surface of the cardboard near the creasing line during the creasing process, seriously affecting the quality of the boxes. During the subsequent folding of the boxes, the cracks generated by the bursting lines will continue to extend and expand, causing the boxes to be scrapped. The main reason for the bursting line phenomenon is that when the cardboard is creasing, its moisture content is low and it is dry, which reduces the cardboard's toughness and bursting strength, and this situation is more serious in dry seasons.

[0003] Chinese patent application CN201410416399.1 discloses a corrugated cardboard creasing device, including a conveyor belt and a creasing machine. The creasing machine includes two creasing rollers with a gap between them for the corrugated cardboard to pass through. Sprayers are located in front of the creasing machine, above and below the gap, respectively. The sprayers are connected to a liquid supply pump, and a sensor is located in front of the sprayers. A humidity detector is located behind the creasing machine, above and / or below the gap, and a hot air blower is located behind the humidity detector, above and below the gap. The liquid supply pump, sensor, humidity detector, and hot air blower are all connected to a controller. This device can simultaneously humidify the upper and lower surfaces of the corrugated cardboard, keeping the cardboard near the creasing line moist and soft, preventing cracking near the creasing line. When the humidity exceeds a set threshold, the hot air blowers above and below the conveyor belt remove water mist from the surface of the corrugated cardboard.

[0004] However, this technical solution uses open-type spray humidification, which covers a large area of ​​water mist. During the humidification process, the non-indented areas of the cardboard will also absorb water mist, causing the cardboard to soften and affecting its structural strength. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings of existing technologies by providing a corrugated paper production creasing device and creasing process. By opening a steam groove on the tooth groove of the lower corrugated roll and an air extraction groove at the end of the tooth of the upper corrugated roll, a steam directional penetration heating and humidification channel is formed from bottom to top in conjunction with a negative pressure component. This allows for simultaneous creasing and steam humidification softening, while simultaneously removing excess steam and condensate from the creasing area to prevent the paperboard from softening due to excessive moisture. At the same time, a serpentine condenser tube recovers condensate and converts exhaust kinetic energy into mechanical energy to drive the steam mechanism. This solves the technical problems in existing technologies, such as low humidification efficiency due to easy steam diffusion, easy softening of paperboard, and energy waste caused by direct exhaust of hot and humid gas.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A corrugated paper production creasing device includes a base and two sets of transport mechanisms, which are respectively arranged on both sides of the base. A creasing mechanism is arranged on the top of the base, and a steam mechanism is arranged inside the base.

[0008] The indentation mechanism includes: a support base, two sets of support bases symmetrically fixedly disposed on the top of the machine base; a connecting rod, multiple sets of connecting rods fixedly connected between the two sets of support bases; an adjusting groove, the two sets of support bases each having an adjusting groove; a lower corrugated roller, the lower corrugated roller rotatably disposed between the two sets of support bases; an upper corrugated roller, the upper corrugated roller rotatably disposed between the two sets of support bases; a cylinder, the top of the two sets of support bases each having a cylinder; a bearing slider, the bearing slider fixedly disposed at the end of the cylinder output rod, and the bearing slider slidingly engaging with the adjusting groove; a servo motor, the servo motor fixedly mounted on the machine base; pulleys, two sets of pulleys respectively fixedly disposed on the output shaft of the servo motor and the end of the lower corrugated roller; a transmission belt, the transmission belt drivingly connected between the two sets of pulleys; corrugated roller assemblies are respectively disposed inside the lower corrugated roller and the upper corrugated roller, and a negative pressure assembly is disposed at one end of the upper corrugated roller.

[0009] The corrugated roll assembly includes: a roll body disposed on the lower corrugated roll and the upper corrugated roll; corrugated teeth, a plurality of sets of corrugated teeth being distributed circumferentially at intervals along the roll body; tooth grooves, a plurality of sets of tooth grooves being formed between adjacent sets of corrugated teeth; an inner roll disposed inside the roll body; ventilation grooves, a plurality of sets of ventilation grooves being formed on the inner roll; an upper roll inner cylinder, the upper roll inner cylinder being rotatably disposed inside the upper corrugated roll; an upper roll counterweight, the upper roll counterweight being fixedly disposed inside the upper roll inner cylinder; and an upper roll through groove. The following components are provided: a roller head, which is formed at the bottom of the upper roller counterweight and the upper roller inner cylinder; two roller heads, which are respectively sealed and connected to both ends of the roller body; a lower roller inner cylinder, which is rotatably disposed inside the lower corrugated roller; a lower roller counterweight, which is fixedly disposed inside the lower roller inner cylinder; a lower roller through groove, which is formed at the top of the lower roller counterweight and the lower roller inner cylinder; a venting inner rod, which is connected through the two sets of roller heads; and a sealing ring, which is disposed at the connection between the two sets of roller heads and both ends of the roller body.

[0010] The corrugated roll assembly further includes: a steam pipe, one end of which is sealed to one end of the venting inner rod inside the lower corrugated roll, and the other end of which is connected to the steam mechanism; an electromagnetic regulating valve a, which is disposed on the steam pipe; and a pressure gauge a, which is disposed on the steam pipe.

[0011] Each set of teeth on the upper corrugated roller has an air extraction groove at its end, and each set of teeth grooves is a closed structure; each set of teeth on the lower corrugated roller has a steam groove, and each set of teeth grooves is a closed structure.

[0012] The negative pressure assembly includes: a negative pressure pump, which is fixedly installed on the machine base; an air extraction pipe, one end of which is sealed to the air extraction end of the negative pressure pump, and the other end of which is sealed to one end of the ventilation inner rod inside the upper corrugated roller; an electromagnetic regulating valve b, which is disposed on the air extraction pipe; and a barometer b, which is disposed on the air extraction pipe.

[0013] The negative pressure assembly further includes: an exhaust pipe, one end of which is sealed to the exhaust end of the negative pressure pump; a serpentine condenser, the inlet end of which is connected to the other end of the exhaust pipe; an exhaust bend, the inlet end of which is connected to the exhaust end of the serpentine condenser, and the exhaust end of the exhaust bend is inclined upward; and a return pipe, which is sealed to the connection between the exhaust pipe and the exhaust bend.

[0014] The negative pressure assembly further includes: an exhaust canister, the inlet of which is connected to the outlet of the exhaust bend; an inlet located at the lower end of the exhaust canister; an exhaust outlet located at the upper end of the exhaust canister; a drive shaft rotatably disposed inside the exhaust canister; a turbine fan fixedly disposed on the drive shaft; a bevel gear a fixedly disposed at the lower end of the drive shaft; a transmission shaft rotatably passing through the exhaust canister; a bevel gear b fixedly disposed at one end of the transmission shaft and meshing with the bevel gear a; and a drive sprocket fixedly disposed at the other end of the transmission shaft.

[0015] The transport mechanism includes: a transport frame, which is fixedly installed on both sides of the base; a guide plate, which is disposed on the transport frame; wheel grooves, with multiple sets of wheel grooves formed on the guide plate; transport shafts, with two sets of transport shafts rotatably disposed on the transport frame; and PU wheels, with multiple sets of PU wheels respectively disposed on the two sets of transport shafts.

[0016] The steam mechanism includes: a water tank disposed inside the base; a stirring shaft rotatably disposed inside the water tank; stirring blades fixedly disposed on the stirring shaft; bearing seats disposed on both sides of the water tank; a reducer disposed on the bearing seats; a driven sprocket disposed at the input end of the reducer and connected to the driving sprocket via a chain; a heater, multiple sets of heaters arranged in an arc on one side of the water tank; and a heat-conducting rod disposed on the heater and extending into the interior of the water tank.

[0017] The creasing process of a creasing device for corrugated paper production further includes the following steps:

[0018] Step 1, Preheating and Conveying: Start the steam mechanism and introduce steam into the lower corrugated roller through the steam pipe to preheat the lower and upper corrugated rollers; start the conveying mechanism to convey the corrugated cardboard along the guide plate between the lower and upper corrugated rollers.

[0019] Step 2, Steam Humidification and Heating: Start the servo motor, which drives the lower corrugated roller to rotate via the pulley and drive belt. The lower corrugated roller drives the upper corrugated roller to rotate synchronously through the corrugated roller assembly. The steam generated by the steam mechanism enters the venting rod inside the lower corrugated roller through the steam pipe, enters the cavity between the inner roller and the roller body through the venting groove, and acts on the lower surface of the corrugated cardboard through the steam groove on the tooth groove of the lower corrugated roller to heat and humidify the area of ​​the cardboard to be embossed.

[0020] Step 3, Negative Pressure Suction and Indentation Forming: Start the negative pressure pump and draw air through the air extraction pipe into the air-venting rod inside the upper corrugated roller. This creates negative pressure in the air extraction groove at the end of the corrugated roller teeth, adsorbing the upper surface of the corrugated cardboard. Under the meshing and squeezing of the upper and lower rollers, corrugated marks are pressed into the cardboard. At the same time, steam heats and humidifies the indented area to soften it. The negative pressure suction removes excess steam and condensate.

[0021] Step 4, Condensation Recovery and Exhaust: The hot and humid gas extracted by the negative pressure pump enters the serpentine condenser through the outlet pipe for condensation, the condensate is collected by returning it through the return pipe, and the remaining gas enters the exhaust tank through the exhaust bend and is discharged from the exhaust port.

[0022] Step 5: Finished Product Output: The corrugated cardboard with embossing completed is output via a transport vehicle.

[0023] The beneficial effects of this invention are as follows:

[0024] (1) This invention opens a steam groove on the tooth groove of the lower corrugated roller and an air extraction groove at the end of the tooth of the upper corrugated roller, so that the steam groove and the air extraction groove are set up vertically and vertically, and form a steam directional penetration channel from bottom to top with the negative pressure component; the steam generated by the steam mechanism enters the ventilation rod in the lower corrugated roller through the steam pipe, enters the cavity between the inner roller and the roller body through the ventilation groove, and is sprayed upward from the steam groove on the tooth groove, accurately passing through the area of ​​the paperboard to be creasing. The air extraction groove at the end of the tooth of the upper corrugated roller guides the steam upward simultaneously under the action of negative pressure, so that the steam forms a penetrating heating and humidification of the paperboard, realizing the simultaneous operation of creasing and heating and humidification; in this process, the high temperature steam effectively softens the paperboard fibers, so that the paperboard has good flexibility when creasing, significantly reducing the risk of bursting caused by fiber breakage at the creasing point, solving the problems of easy steam diffusion and low heating and humidification efficiency in the prior art, and improving the creasing quality and product qualification rate.

[0025] (2) The present invention provides a negative pressure assembly at one end of the upper corrugated roller. The negative pressure pump in the negative pressure assembly continuously draws air from the ventilation rod inside the upper corrugated roller through the air extraction pipe, so that a negative pressure is formed in the internal cavity of the upper corrugated roller. The negative pressure is transmitted to the air extraction groove at the end of the corrugated tooth through the inner cylinder of the upper roller and the through groove of the upper roller, so that a stable negative pressure adsorption force is generated at the air extraction groove. On the one hand, the adsorption force tightly adsorbs the upper surface of the corrugated cardboard to the surface of the corrugated tooth of the upper corrugated roller, ensuring that the cardboard does not shift during the creasing process and ensuring the accuracy of the creasing position. On the other hand, the negative pressure suction removes excess steam and condensate from the creasing area in time, effectively avoiding the problem of the cardboard softening due to excessive moisture and the decrease in compressive strength, ensuring the structural strength and stacking performance of the cardboard after forming, and improving the creasing quality and product qualification rate.

[0026] (3) This invention achieves the condensation and recovery of water vapor in humid and hot gas and the recovery and utilization of exhaust kinetic energy by sequentially setting a serpentine condenser and an exhaust tank at the end of the outlet pipe of the negative pressure component; the humid and hot gas extracted by the negative pressure pump enters the serpentine condenser through the outlet pipe, and the coil structure of the serpentine condenser increases the heat exchange area, so that the water vapor in the humid and hot gas is rapidly condensed into liquid water. The condensate is collected back to the water tank through the return pipe under the action of gravity, realizing the recycling of water resources and reducing the consumption of process water; at the same time, the remaining dry gas enters The exhaust gas flows upwards, driving the turbine fan to rotate. The turbine fan drives the drive shaft to rotate, which in turn drives the drive sprocket to rotate via the meshing and reversing of bevel gears a and b and the transmission shaft. The drive sprocket drives the driven sprocket of the steam mechanism through a chain. After being reduced in speed and torque by the reducer, it drives the stirring shaft to rotate. The stirring blades continuously agitate the water in the tank, making the water temperature in the tank evenly distributed and accelerating the release of bubbles. This improves the steam generation efficiency and stability, realizes the cascade recovery and utilization of exhaust kinetic energy, and effectively reduces equipment energy consumption and production costs. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0028] Figure 2 This is a schematic diagram of the side structure of the present invention;

[0029] Figure 3 This is a top view of the structure of the present invention;

[0030] Figure 4 This is a schematic diagram of the disassembled structure of the present invention;

[0031] Figure 5 This is a schematic diagram of the transportation mechanism structure of the present invention;

[0032] Figure 6 This is a schematic diagram of the indentation mechanism of the present invention;

[0033] Figure 7 This is a schematic diagram of the disassembled corrugated roller structure of the present invention;

[0034] Figure 8 This is a schematic diagram of the cross-sectional structure of the corrugated roller of the present invention;

[0035] Figure 9 This is a schematic diagram of the overall structure of the steam mechanism of the present invention;

[0036] Figure 10 This is a schematic diagram of the negative pressure component structure of the present invention;

[0037] Figure 11 This is a schematic diagram of the exhaust tank structure of the present invention;

[0038] Figure 12 This is a schematic cross-sectional view of the steam mechanism of the present invention.

[0039] The reference numerals in the accompanying drawings of this application are as follows: 1. Base; 2. Transport mechanism; 201. Transport frame; 202. Guide plate; 2021. Wheel groove; 203. Transport shaft; 2031. PU wheel; 3. Indentation mechanism; 301. Support base; 3011. Connecting rod; 3012. Adjusting chute; 302. Lower corrugated roller; 303. Upper corrugated roller; 304. Cylinder; 3041. Bearing slider; 305. Servo motor Machine; 3051, Pulley; 3052, Drive Belt; 31, Corrugated Roll Assembly; 311, Roller Body; 3111, Corrugated Teeth; 3112, Tooth Groove; 312, Inner Roller; 3121, Vent Groove; 313, Upper Roller Inner Cylinder; 3131, Upper Roller Counterweight; 3132, Upper Roller Through Groove; 314, Roller Head; 315, Lower Roller Inner Cylinder; 3151, Lower Roller Counterweight; 3152, Lower Roller Through Groove; 316. 317. Vent rod; 318. Sealing ring; 319. Steam pipe; 3181. Electromagnetic regulating valve a; 3182. Barometer a; 32. Negative pressure assembly; 321. Negative pressure pump; 322. Suction pipe; 3221. Electromagnetic regulating valve b; 3222. Barometer b; 323. Exhaust pipe; 3231. Serpentine condenser tube; 3232. Exhaust bend; 3233. Return pipe; 324. Exhaust canister; 3241. 3242. Air inlet; 3243. Exhaust outlet; 3244. Drive shaft; 3244. Turbine fan; 3245. Bevel gear a; 3246. Drive shaft; 3247. Bevel gear b; 3248. Drive sprocket; 4. Steam mechanism; 401. Water tank; 402. Stirring shaft; 403. Stirring blade; 404. Bearing housing; 405. Reducer; 406. Driven sprocket; 407. Heater; 408. Heat transfer rod. Detailed Implementation

[0040] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0041] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0042] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0043] Example 1: As Figures 1-12 As shown, this embodiment provides a corrugated paper production creasing device and creasing process, including a machine base 1, and two sets of transport mechanisms 2, which are respectively arranged on both sides of the machine base 1. A creasing mechanism 3 is arranged on the top of the machine base 1, and a steam mechanism 4 is arranged inside the machine base 1.

[0044] The indentation mechanism 3 includes: a support base 301, two sets of support bases 301 are symmetrically fixedly disposed on the top of the machine base 1; a connecting rod 3011, multiple sets of connecting rods 3011 are fixedly connected between the two sets of support bases 301; an adjusting slide groove 3012, an adjusting slide groove 3012 is respectively opened on the two sets of support bases 301; a lower corrugated roller 302, the lower corrugated roller 302 is rotatably disposed between the two sets of support bases 301; an upper corrugated roller 303, the upper corrugated roller 303 is rotatably disposed between the two sets of support bases 301; a cylinder 304, a cylinder 304 is respectively disposed at the top of the two sets of support bases 301; and a bearing slider 3041, a shaft The bearing slider 3041 is fixedly installed at the end of the output rod of the cylinder 304, and the bearing slider 3041 slides in cooperation with the adjusting groove 3012; the servo motor 305 is fixedly installed on the machine base 1; the pulleys 3051, two sets of pulleys 3051 are respectively fixedly installed on the output shaft of the servo motor 305 and the end of the lower corrugated roller 302; the transmission belt 3052 is connected between the two sets of pulleys 3051; the lower corrugated roller 302 and the upper corrugated roller 303 are respectively provided with corrugated roller assemblies 31, and one end of the upper corrugated roller 303 is provided with a negative pressure assembly 32.

[0045] In this embodiment, the bearing slider 3041 is driven by the cylinder 304 to slide up and down along the adjusting groove 3012. The bearing slider 3041 drives the upper corrugated roller 303 to move up and down, thereby adjusting the meshing gap and indentation pressure between the upper corrugated roller 303 and the lower corrugated roller 302 to adapt to corrugated cardboard of different thicknesses. The servo motor 305 drives the lower corrugated roller 302 to rotate through the pulley 3051 and the transmission belt 3052. The lower corrugated roller 302 drives the upper corrugated roller 303 to rotate synchronously in the opposite direction through the meshing of the matching gear.

[0046] The corrugated roll assembly 31 includes: a roll body 311, which is disposed on a lower corrugated roll 302 and an upper corrugated roll 303; ribs 3111, with multiple sets of ribs 3111 distributed circumferentially along the roll body 311; tooth grooves 3112, with multiple sets of tooth grooves 3112 formed between adjacent sets of ribs 3111; an inner roll 312, which is disposed inside the roll body 311; ventilation grooves 3121, with multiple sets of ventilation grooves 3121 formed on the inner roll 312; an upper roll inner cylinder 313, which is rotatably disposed inside the upper corrugated roll 303; an upper roll counterweight 3131, which is fixedly disposed inside the upper roll inner cylinder 313; and an upper roll through groove 3132, which is used for the upper roll through... A groove 3132 is formed at the bottom of the upper roller counterweight 3131 and the upper roller inner cylinder 313; roller heads 314, two sets of roller heads 314 are respectively sealed and connected to both ends of the roller body 311; lower roller inner cylinder 315, the lower roller inner cylinder 315 is rotatably set inside the lower corrugated roller 302; lower roller counterweight 3151, the lower roller counterweight 3151 is fixedly set inside the lower roller inner cylinder 315; lower roller through groove 3152, the lower roller through groove 3152 is formed at the top of the lower roller counterweight 3151 and the lower roller inner cylinder 315; venting inner rod 316, the venting inner rod 316 is connected through the two sets of roller heads 314; sealing ring 317, the sealing ring 317 is set at the connection between the two sets of roller heads 314 and both ends of the roller body 311.

[0047] In this embodiment, the upper corrugated roller 303 and the lower corrugated roller 302 have basically the same structure, the difference being the setting position of the internal counterweights: the upper roller counterweight 3131 is fixed inside the upper roller inner cylinder 313, and the upper roller through groove 3132 is opened at the bottom of the upper roller counterweight 3131 and the upper roller inner cylinder 313; the lower roller counterweight 3151 is fixed inside the lower roller inner cylinder 315, and the lower roller through groove 3152 is opened at the top of the lower roller counterweight 3151 and the lower roller inner cylinder 315; under the action of gravity, the upper roller counterweight 3131 always drives the upper roller inner cylinder 313 to rotate until the through groove is at the lowest point, while the lower roller counterweight 3151 always drives the lower roller inner cylinder 315 to rotate until the through groove is at the highest point, so that no matter how the roller body 311 rotates, the upper roller through groove 3132 is always aligned with the lower roller through groove 3152, ensuring the continuous conduction of the steam passage and the exhaust passage.

[0048] The corrugated roll assembly 31 also includes: a steam pipe 318, one end of which is sealed to one end of the venting inner rod 316 inside the lower corrugated roll 302, and the other end of which is connected to the steam mechanism 4; an electromagnetic regulating valve a3181, which is mounted on the steam pipe 318; and a barometer a3182, which is mounted on the steam pipe 318.

[0049] In this embodiment, the steam generated by the steam mechanism 4 enters the ventilation inner rod 316 inside the lower corrugated roller 302 through the steam pipe 318. The steam flow rate is adjusted by the electromagnetic regulating valve a3181, and the pressure gauge a3182 monitors the pressure value in the steam pipe 318 in real time to ensure that the steam pressure and flow rate meet the requirements of the indentation process.

[0050] Each set of teeth 3111 of the upper corrugated roller 303 is provided with an air extraction groove at the end, and each set of teeth 3112 is a closed structure; each set of teeth 3112 of the lower corrugated roller 302 is provided with a steam groove, and each set of teeth 3111 is a closed structure.

[0051] In this embodiment, a steam groove is provided on the tooth groove 3112 of the lower corrugated roller 302, so that steam can be sprayed upward from the inside of the lower corrugated roller 302 through the steam groove at the tooth groove 3112 and act on the position to be indented on the lower surface of the cardboard; an air extraction groove is provided at the end of the corrugated tooth 3111 of the upper corrugated roller 303, so that the end of the corrugated tooth 3111 generates a negative pressure adsorption force, adsorbing the upper surface of the cardboard while extracting excess steam and condensate; the steam groove and the air extraction groove are arranged vertically and vertically to form a steam directional flow channel from bottom to top.

[0052] The negative pressure assembly 32 includes: a negative pressure pump 321, which is fixedly installed on the machine base 1; an air extraction pipe 322, one end of which is sealed to the air extraction end of the negative pressure pump 321, and the other end of which is sealed to one end of the ventilation inner rod 316 inside the upper corrugated roller 303; an electromagnetic regulating valve b3221, which is installed on the air extraction pipe 322; and a barometer b3222, which is installed on the air extraction pipe 322.

[0053] In this embodiment, after the negative pressure pump 321 is started, it draws air from the ventilated inner rod 316 inside the upper corrugated roller 303 through the air extraction pipe 322, so that a negative pressure is formed in the cavity inside the upper corrugated roller 303. This negative pressure is transmitted to the air extraction groove at the end of the corrugated tooth 3111 through the upper roller through groove 3132 and the upper roller inner cylinder 313, so that an adsorption force is generated at the air extraction groove. The electromagnetic regulating valve b3221 is used to adjust the amount of air extraction, and the barometer b3222 is used to monitor the air pressure value in the air extraction pipe 322 in real time, so that the operator can adjust the amount of negative pressure according to the paperboard material and thickness.

[0054] The negative pressure assembly 32 further includes: an outlet pipe 323, one end of which is sealed to the outlet end of the negative pressure pump 321; a serpentine condenser pipe 3231, the inlet end of which is connected to the other end of the outlet pipe 323; an exhaust bend pipe 3232, the inlet end of which is connected to the outlet end of the serpentine condenser pipe 3231, and the outlet end of the exhaust bend pipe 3232 is inclined upward; and a return pipe 3233, which is sealed to the connection between the outlet pipe 323 and the exhaust bend pipe 3232.

[0055] In this embodiment, the hot and humid gas extracted by the negative pressure pump 321 enters the serpentine condenser tube 3231 through the outlet pipe 323. The serpentine condenser tube 3231 adopts a serpentine coil structure, which increases the heat exchange area and allows the water vapor in the hot and humid gas to condense into liquid water quickly. The condensate flows downward along the serpentine condenser tube 3231 under the action of gravity and flows back to the water tank 401 through the return pipe 3233 at the connection between the exhaust bend pipe 3232 and the outlet pipe 323, realizing the recycling of water resources. The outlet end of the exhaust bend pipe 3232 is inclined upward so that the remaining gas can be discharged smoothly upward, while preventing the condensate from flowing back in.

[0056] The negative pressure assembly 32 further includes: an exhaust canister 324, the inlet end of which is connected to the outlet end of the exhaust bend 3232; an inlet 3241, located at the lower end of the exhaust canister 324; an exhaust outlet 3242, located at the upper end of the exhaust canister 324; a drive shaft 3243, rotatably disposed inside the exhaust canister 324; and a turbine fan 3244, fixedly disposed on the drive shaft 323. 43; bevel gear a3245, bevel gear a3245 is fixedly mounted on the lower end of drive shaft 3243; drive shaft 3246, drive shaft 3246 is rotatably mounted through exhaust tank 324; bevel gear b3247, bevel gear b3247 is fixedly mounted on one end of drive shaft 3246, and bevel gear b3247 meshes with bevel gear a3245; drive sprocket 3248, drive sprocket 3248 is fixedly mounted on the other end of drive shaft 3246.

[0057] In this embodiment, the remaining dry gas after condensation by the serpentine condenser 3231 enters the exhaust tank 324 from the air inlet 3241 at the lower end of the exhaust tank 324, flows from bottom to top, and drives the turbine fan 3244 to rotate. The turbine fan 3244 drives the drive shaft 3243 to rotate, and the bevel gear a 3245 at the lower end of the drive shaft 3243 drives the bevel gear b 3247 to rotate. The bevel gear b 3247 drives the drive sprocket 3248 to rotate through the transmission shaft 3246. Through this energy recovery structure, the exhaust kinetic energy is converted into mechanical energy, which is used to drive the stirring shaft 402 in the subsequent steam mechanism 4 to rotate, realizing the cascade utilization of energy.

[0058] The transport mechanism 2 includes: a transport frame 201, which is fixedly installed on both sides of the base 1; a guide plate 202, which is disposed on the transport frame 201; wheel grooves 2021, with multiple sets of wheel grooves 2021 formed on the guide plate 202; transport shafts 203, with two sets of transport shafts 203 rotatably disposed on the transport frame 201; and PU wheels 2031, with multiple sets of PU wheels 2031 respectively disposed on the two sets of transport shafts 203.

[0059] In this embodiment, the transport mechanism 2 is fixedly installed on both sides of the base 1 via the transport frame 201. The guide plate 202 guides the conveying direction of the corrugated cardboard to prevent the cardboard from deviating during the conveying process. The PU wheel 2031 is made of polyurethane material, which has good wear resistance and appropriate elasticity, and can avoid causing indentation damage to the cardboard surface while conveying the cardboard. The two sets of transport shafts 203 are respectively set on the feeding side and the discharging side of the indentation mechanism 3 to realize the continuous conveying of the cardboard.

[0060] The steam mechanism 4 includes: a water tank 401, which is disposed inside the base 1; a stirring shaft 402, which is rotatably disposed inside the water tank 401; stirring blades 403, which are fixedly disposed on the stirring shaft 402; bearing seats 404, which are disposed on both sides of the water tank 401; a reducer 405, which is disposed on the bearing seats 404; a driven sprocket 406, which is disposed at the input end of the reducer 405 and is connected to the driving sprocket 3248 via a chain; a heater 407, which is arranged in an arc shape and installed on one side of the water tank 401; and a heat-conducting rod 408, which is disposed on the heater 407 and extends into the interior of the water tank 401.

[0061] In this embodiment, the water tank 401 contains water, and the heater 407 transfers heat to the water in the water tank 401 through the heat conduction rod 408, causing the water to boil and generate steam. The heater 407 is arranged in an arc shape on one side of the water tank 401, so that the heat is transferred to the inside of the water tank 401 more evenly. The driven sprocket 406 is connected to the driving sprocket 3248 through a chain, and transmits the mechanical energy generated by the turbine fan 3244 in the exhaust tank 324 to the reducer 405. After the reducer 405 reduces the speed and increases the torque, it drives the stirring shaft 402 to rotate. The stirring shaft 402 drives the stirring blade 403 to stir the water in the water tank 401, so that the water temperature is evenly distributed and the steam generation efficiency is improved. At the same time, the disturbance generated by stirring can accelerate the release of air bubbles in the water and promote the continuous and stable production of steam.

[0062] Example 2: Figures 1-12As shown, components that are the same as or corresponding to those in Embodiment 1 are referred to using the same reference numerals as in Embodiment 1. For simplicity, only the differences from Embodiment 1 are described below. The difference between Embodiment 2 and Embodiment 1 is as follows:

[0063] This embodiment provides a creasing process for a creasing device used in corrugated paper production, which further includes the following steps:

[0064] Step 1, Preheating and Conveying: The steam mechanism 4 is activated. The heater 407 heats the water in the water tank 401 through the heat-conducting rod 408, causing the water to boil and generate steam. The steam enters the venting inner rod 316 inside the lower corrugated roller 302 through the steam pipe 318, enters the cavity between the inner roller 312 and the roller body 311 through the venting groove 3121, and is evenly diffused to the surface of the lower corrugated roller 302 through the steam grooves on the tooth grooves 3112 of the lower corrugated roller 302, fully preheating the lower corrugated roller 302 and the upper corrugated roller 303, so that the roller surface temperature of the upper and lower rollers reaches the preset temperature, preferably 80℃-120℃, to ensure a stable heating and humidification environment when the corrugated cardboard enters the creasing area. The conveying mechanism 2 is activated. The corrugated cardboard is guided by the guide plate 202 and driven by the PU wheel 2031 on the feeding side to the creasing station between the lower corrugated roller 302 and the upper corrugated roller 303.

[0065] Step 2, Steam Humidification and Heating: Start the servo motor 305, which drives the lower corrugated roller 302 to rotate at a constant speed through the pulley 3051 and the transmission belt 3052. The lower corrugated roller 302 drives the upper corrugated roller 303 to rotate synchronously in the opposite direction through the meshing of the corrugated roller assembly 31's teeth 3111 and tooth grooves 3112. The steam mechanism 4 continuously generates steam, which enters the ventilation rod 316 inside the lower corrugated roller 302 through the steam pipe 318, enters the cavity between the inner roller 312 and the roller body 311 through the ventilation groove 3121, and is continuously sprayed upward through the steam grooves on the tooth grooves 3112 of the lower corrugated roller 302. This heats and humidifies the area to be indented on the lower surface of the corrugated cardboard, so that the cardboard fibers are fully softened under high temperature and high humidity conditions, effectively reducing the rigidity of the cardboard and reducing the risk of fiber breakage during indentation from the root.

[0066] Step 3, Negative Pressure Suction and Indentation Forming: The negative pressure pump 321 is started, and air is continuously drawn from the ventilated inner rod 316 inside the upper corrugated roller 303 through the suction pipe 322, creating a negative pressure in the internal chamber of the upper corrugated roller 303. This negative pressure is transmitted through the upper roller through groove 3132 and the upper roller inner cylinder 313 to the suction groove at the end of the corrugating teeth 3111, generating a stable negative pressure adsorption force at the suction groove, thus adsorbing and fixing the upper surface of the corrugated cardboard to the corrugating teeth 3111 of the upper corrugated roller 303. 11. Surface: Ensure that the cardboard does not shift during the creasing process; Under the meshing and squeezing action of the flute teeth 3111 of the upper corrugating roller 303 and the grooves 3112 of the lower corrugating roller 302, the corrugated cardboard is uniformly pressed into the width direction of the cardboard. At the same time, steam continuously heats and humidifies the creasing position to keep the fibers in a softened state. The negative pressure suction removes the excess steam and condensate generated during the creasing process in time to prevent the cardboard from reducing its strength due to excessive moisture.

[0067] Step 4: Condensation Recovery and Exhaust: The hot, humid gas extracted by the negative pressure pump 321 enters the serpentine condenser tube 3231 through the exhaust pipe 323. The coil structure of the serpentine condenser tube 3231 increases the heat exchange area. Water vapor in the hot, humid gas rapidly condenses into liquid water as it flows through the serpentine condenser tube 3231. The condensate flows downward along the serpentine condenser tube 3231 under the action of gravity and is collected back into the water tank 401 through the return pipe 3233 at the connection between the exhaust bend 3232 and the exhaust pipe 323. This achieves water resource recycling and reduces process waste. Water consumption; the remaining dry gas enters the exhaust tank 324 through the exhaust bend 3232, flows from bottom to top and drives the turbine fan 3244 to rotate. The turbine fan 3244 drives the drive shaft 3243 to rotate. The bevel gear a3245 at the lower end of the drive shaft 3243 drives the bevel gear b3247 to rotate. The bevel gear b3247 drives the drive sprocket 3248 to rotate through the transmission shaft 3246, converting the exhaust kinetic energy into mechanical energy to drive the stirring shaft 402. Finally, it is discharged through the exhaust port 3242, avoiding the direct discharge of hot and humid gas into the workshop environment.

[0068] Step 5, Finished Product Output: The corrugated cardboard with the embossing completed is output from the embossing station under the continuous rotation of the upper and lower rollers. Driven by the PU wheel 2031 on the discharge side, it is conveyed along the guide plate 202 to the next station, completing the entire embossing process.

[0069] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A corrugated paper production creasing device, comprising a base (1), characterized in that, It also includes two sets of transport mechanisms (2), which are respectively set on both sides of the base (1). The top of the base (1) is provided with an indentation mechanism (3), and the inside of the base (1) is provided with a steam mechanism (4). The indentation mechanism (3) includes: a support base (301), two sets of the support bases (301) are symmetrically fixedly disposed on the top of the machine base (1); a connecting rod (3011), multiple sets of the connecting rods (3011) are fixedly connected between the two sets of the support bases (301); an adjusting groove (3012), the adjusting groove (3012) is respectively opened on the two sets of the support bases (301); a lower corrugated roller (302), the lower corrugated roller (302) is rotatably disposed between the two sets of the support bases (301); an upper corrugated roller (303), the upper corrugated roller (303) is rotatably disposed between the two sets of the support bases (301); a cylinder (304), the cylinder (304) is respectively disposed on the top of the two sets of the support bases (301); and a bearing slider (3041). The bearing slider (3041) is fixedly installed at the end of the output rod of the cylinder (304), and the bearing slider (3041) slides in cooperation with the adjusting groove (3012); the servo motor (305) is fixedly installed on the machine base (1); the pulleys (3051) are respectively fixedly installed on the output shaft of the servo motor (305) and the end of the lower corrugated roller (302); the transmission belt (3052) is connected between the two sets of pulleys (3051); the lower corrugated roller (302) and the upper corrugated roller (303) are respectively provided with corrugated roller assemblies (31), and one end of the upper corrugated roller (303) is provided with a negative pressure assembly (32).

2. The corrugated paper production creasing device according to claim 1, characterized in that, The corrugated roll assembly (31) includes: a roll body (311) disposed on the lower corrugated roll (302) and the upper corrugated roll (303); corrugated teeth (3111), a plurality of sets of corrugated teeth (3111) being distributed circumferentially along the roll body (3111); tooth grooves (3112), a plurality of sets of tooth grooves (3112) being formed between two adjacent sets of corrugated teeth (3111); and an inner roll (3112). 2) The inner roller (312) is provided inside the roller body (311); ventilation groove (3121), multiple sets of ventilation grooves (3121) are provided on the inner roller (312); upper roller inner cylinder (313), the upper roller inner cylinder (313) is rotatably provided inside the upper corrugated roller (303); upper roller counterweight (3131), the upper roller counterweight (3131) is fixedly provided inside the upper roller inner cylinder (313); upper roller through groove (3132), the upper roller through groove (3132) is provided inside the upper roller inner cylinder (312); the upper roller through groove (3132) is provided inside the inner roller (312); the upper roller through groove (31 ... Roller grooves (3132) are formed at the bottom of the upper roller counterweight (3131) and the upper roller inner cylinder (313); roller heads (314), two sets of roller heads (314) are respectively sealed and connected to both ends of the roller body (311); lower roller inner cylinder (315), the lower roller inner cylinder (315) is rotatably disposed inside the lower corrugated roller (302); lower roller counterweight (3151), the lower roller counterweight (3151) is fixedly disposed on the lower roller body (302). The interior of the inner cylinder of the roller (315); the lower roller through groove (3152), which is opened at the top of the lower roller counterweight (3151) and the lower roller inner cylinder (315); the venting inner rod (316), which is connected through the two sets of roller heads (314); the sealing ring (317), which is set at the connection between the two sets of roller heads (314) and the two ends of the roller body (311).

3. The corrugated paper production creasing device according to claim 2, characterized in that, The corrugated roller assembly (31) further includes: a steam pipe (318), one end of which is sealed to one end of the venting inner rod (316) inside the lower corrugated roller (302), and the other end of which is connected to the steam mechanism (4); an electromagnetic regulating valve a (3181), which is disposed on the steam pipe (318); and a barometer a (3182), which is disposed on the steam pipe (318).

4. The corrugated paper production creasing device according to claim 2, characterized in that, Each set of teeth (3111) of the upper corrugated roller (303) is provided with an air extraction groove at the end, and each set of teeth (3112) is a closed structure; each set of teeth (3112) of the lower corrugated roller (302) is provided with a steam groove, and each set of teeth (3111) is a closed structure.

5. The corrugated paper production creasing device according to claim 1, characterized in that, The negative pressure assembly (32) includes: a negative pressure pump (321), which is fixedly installed on the machine base (1); an air extraction pipe (322), one end of which is sealed to the air extraction end of the negative pressure pump (321), and the other end of which is sealed to one end of the ventilation inner rod (316) in the upper corrugated roller (303); an electromagnetic regulating valve b (3221), which is disposed on the air extraction pipe (322); and a barometer b (3222), which is disposed on the air extraction pipe (322).

6. The corrugated paper production creasing device according to claim 5, characterized in that, The negative pressure assembly (32) further includes: an exhaust pipe (323), one end of which is sealed to the exhaust end of the negative pressure pump (321); a serpentine condenser pipe (3231), the inlet end of which is connected to the other end of the exhaust pipe (323); an exhaust bend pipe (3232), the inlet end of which is connected to the exhaust end of the serpentine condenser pipe (3231), the exhaust end of which is inclined upward; and a return pipe (3233), which is sealed to the connection between the exhaust pipe (323) and the exhaust bend pipe (3232).

7. The corrugated paper production creasing device according to claim 6, characterized in that, The negative pressure assembly (32) further includes: an exhaust canister (324), the inlet end of which is connected to the outlet end of the exhaust bend (3232); an inlet (3241), located at the lower end of the exhaust canister (324); an exhaust outlet (3242), located at the upper end of the exhaust canister (324); a drive shaft (3243), rotatably disposed inside the exhaust canister (324); and a turbine fan (3244), fixedly disposed on the drive shaft. On the drive shaft (3243); bevel gear a (3245), the bevel gear a (3245) is fixedly disposed at the lower end of the drive shaft (3243); transmission shaft (3246), the transmission shaft (3246) is rotatably disposed through the exhaust canister (324); bevel gear b (3247), the bevel gear b (3247) is fixedly disposed at one end of the transmission shaft (3246), and the bevel gear b (3247) meshes with the bevel gear a (3245); drive sprocket (3248), the drive sprocket (3248) is fixedly disposed at the other end of the transmission shaft (3246).

8. The corrugated paper production creasing device according to claim 1, characterized in that, The transport mechanism (2) includes: a transport frame (201), which is fixedly installed on both sides of the base (1); a guide plate (202), which is disposed on the transport frame (201); wheel grooves (2021), with multiple sets of wheel grooves (2021) opened on the guide plate (202); transport shafts (203), with two sets of transport shafts (203) rotatably disposed on the transport frame (201); and PU wheels (2031), with multiple sets of PU wheels (2031) respectively disposed on the two sets of transport shafts (203).

9. A corrugated paper production creasing device according to claim 7, characterized in that, The steam mechanism (4) includes: a water tank (401) disposed inside the base (1); a stirring shaft (402) rotatably disposed inside the water tank (401); stirring blades (403) fixedly disposed on the stirring shaft (402); bearing seats (404) disposed on both sides of the water tank (401); and a reducer (405) disposed on the bearing seats (404). 404) On; driven sprocket (406), the driven sprocket (406) is disposed at the input end of the reducer (405), and the driven sprocket (406) is connected to the driving sprocket (3248) via a chain; heater (407), multiple sets of heaters (407) are arranged in an arc and installed on one side of the water tank (401); heat conducting rod (408), the heat conducting rod (408) is disposed on the heater (407), and the heat conducting rod (408) extends into the interior of the water tank (401).

10. The creasing process of a corrugated paper production creasing device according to any one of claims 1-9, characterized in that, It also includes the following steps: Step 1, Preheating and Conveying: Start the steam mechanism (4) and introduce steam into the lower corrugated roller (302) through the steam pipe (318) to preheat the lower corrugated roller (302) and the upper corrugated roller (303); start the conveying mechanism (2) to convey the corrugated cardboard along the guide plate (202) to the space between the lower corrugated roller (302) and the upper corrugated roller (303); Step 2, Steam Humidification and Heating: Start the servo motor (305), drive the lower corrugated roller (302) to rotate through the pulley (3051) and the transmission belt (3052), and drive the upper corrugated roller (303) to rotate synchronously through the corrugated roller assembly (31); the steam generated by the steam mechanism (4) enters the ventilation rod (316) in the lower corrugated roller (302) through the steam pipe (318), enters the cavity between the inner roller (312) and the roller body (311) through the ventilation groove (3121), and acts on the lower surface of the corrugated cardboard through the steam groove (3112) on the tooth groove (3112) of the lower corrugated roller (302) to heat and humidify the area of ​​the cardboard to be indented; Step 3, Negative Pressure Suction and Indentation Forming: Start the negative pressure pump (321) and draw air through the air extraction pipe (322) into the air-permeable inner rod (316) of the upper corrugated roller (303), so that the air extraction groove at the end of the corrugated teeth (3111) of the upper corrugated roller (303) generates negative pressure, which adsorbs the upper surface of the corrugated cardboard; the corrugated cardboard is pressed out with corrugated marks under the meshing and squeezing of the upper and lower rollers, while the steam heats and humidifies the indentation position to soften it, and the negative pressure suction removes the excess steam and condensate; Step 4, Condensation Recovery and Exhaust: The hot and humid gas extracted by the negative pressure pump (321) enters the serpentine condenser (3231) through the outlet pipe (323) for condensation. The condensate is collected by returning through the return pipe (3233). The remaining gas enters the exhaust tank (324) through the exhaust bend (3232) and is discharged from the exhaust port (3242). Step 5, Finished Product Output: The corrugated cardboard with the embossing completed is output via the transport mechanism (2).

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