Corrugated board production line with good humidifying effect

Abstract

The utility model relates to the field of corrugated board production and manufacturing, in particular to a corrugated board production line with a good humidifying effect. The corrugated board production line comprises a conveying belt and an indentation device, a spray type humidifier is arranged on the conveying belt and used for conducting spray humidification on a corrugated board to be indented and going to the indentation device, and a wetting roller is arranged on the conveying belt and located behind the spray type humidifier; the wetting roller comprises a roller body transversely arranged left and right and a water absorption sponge layer arranged outside the roller body in a sleeving mode, a space is reserved in the roller body to form a water storage bin, a plurality of water seepage through holes penetrating through the side wall of the roller body and leading to the water storage bin are formed in the side wall of the roller body, and water stored in the water storage bin can seep into the water absorption sponge layer outside the roller body through the water seepage through holes. The wetting roller is provided with a vertical screw motor, and is driven by the screw motor to move to be close to the conveying belt, so that the water-absorbing sponge layer wetted by water of the wetting roller can be sequentially attached to the whole surface of the corrugated board conveyed forwards by the conveying belt so as to wet the surface in advance.

Description

Technical Field

[0001] The utility model relates to the field of corrugated paperboard production and manufacturing, in particular to a corrugated paperboard production line with good humidification effect. Background Art

[0002] Corrugated cardboard is a multi-layer structure. Common corrugated cardboard has three layers (or five or seven layers), including a wavy corrugated core layer and a plate-like inner layer and a plate-like surface layer bonded to the inner and outer surfaces of the corrugated core layer. After the paper raw materials are cut, pressed, glued and bonded by various devices in the corrugated cardboard production line, a flat semi-finished corrugated cardboard is obtained. The semi-finished corrugated cardboard is then printed on the surface by a printing device under the conveyor belt, and the edge of the cardboard is trimmed by a trimming device, and then the surface is indented by a creasing device to obtain a finished corrugated cardboard. Users can fold along the surface indentation of the finished corrugated cardboard to obtain a carton of the corresponding size. Since the corrugated cardboard is brittle, cracks are easily generated near the indentation line on the surface of the corrugated cardboard during the indentation process of the indentation device, affecting the quality of the corrugated cardboard; in the subsequent folding process of the corrugated cardboard, the cracks will continue to extend and expand, causing the carton to be scrapped. To this end, the surface of the corrugated cardboard needs to be humidified before creasing. Specifically, a spray humidifier is arranged in front of the creasing device, and the spray humidifier is directed downward to the conveyor belt to spray and humidify the corrugated cardboard to be creasing on the way driven by the conveyor belt to the creasing device. After the corrugated cardboard to be creasing is sprayed and humidified, its compression resistance is improved, and the surface is not easy to crack when it is creasing by the creasing device later. The disadvantage of this spray humidifier is that after the sprayed atomized water droplets fall on the surface of the corrugated cardboard, it is not easy to penetrate into the surface of the corrugated cardboard for wetting under the action of its own gravity, the wetting speed is slow, and the humidification effect is poor. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a corrugated paperboard production line, which has a better humidification effect on the corrugated paperboard.

[0004] In order to solve the above problems, the utility model provides a corrugated cardboard production line with good humidification effect, including a conveyor belt and a creasing device arranged in front of the conveyor belt, the conveyor belt conveys the corrugated cardboard to be creasing forward to the creasing device for creasing, and a spray humidifier is arranged on the conveyor belt to spray and humidify the corrugated cardboard to be creasing on the creasing device.

[0005] A moistening roller is provided on the conveyor belt and is located behind the spray humidifier;

[0006] The moistening roller comprises a roller body placed horizontally on the left and right sides and a water-absorbing sponge layer sleeved on the roller body. The interior of the roller body is left hollow to form a water storage tank. The side wall of the roller body is provided with a plurality of water seepage holes penetrating through the side wall of the roller body and leading to the water storage tank, so that the water stored in the water storage tank can seep into the water-absorbing sponge layer outside the roller body through these water seepage holes.

[0007] The wetting roller is equipped with a vertical screw motor, which moves close to the conveyor belt under the drive of the screw motor, so that the water-absorbing sponge layer of the wetting roller, which has been soaked with water, can be pressed against the entire surface of the corrugated cardboard passed by the conveyor belt in turn to pre-wet the surface.

[0008] Furthermore, the wetting roller is specifically arranged above the conveyor belt, and is driven by the screw motor to move downward close to the conveyor belt to pre-wet the entire upper surface of the corrugated cardboard passing by.

[0009] Furthermore, it comprises a mounting frame detachably mounted on the conveyor belt, which is located behind the spray humidifier, and the wetting roller is movably connected to the mounting frame and can move up and down relative to the mounting frame under the drive of the screw motor.

[0010] Furthermore: the mounting frame has a side portion extending toward the conveyor belt, and the side portion is provided with a vertical guide groove; a guide block is installed at the end of the roller body of the wetting roller, and the wetting roller can rotate around the horizontal axis relative to the guide block; the guide block is inserted into and accommodated in the vertical guide groove, and the screw motor is specifically connected to the guide block through its screw drive, and the forward or reverse rotation of the screw of the screw motor can drive the guide block together with the roller body of the wetting roller to move upward or downward along the vertical guide groove.

[0011] Furthermore, the spray humidifier is located above the conveyor belt to humidify the upper surface of the corrugated cardboard passing through.

[0012] Furthermore, there are two groups of spray humidifiers, which are arranged one in front and one behind along the conveyor belt.

[0013] Furthermore, the water storage bin opening is opened on the end wall of the roller body, and the bin opening is detachably covered with a sealing soft plug.

[0014] Furthermore: an ultrasonic sensor and / or an infrared sensor is arranged behind the wetting roller, which is used to sense the corrugated cardboard on the conveyor belt; and a controller is included, which controls the connection with the sensor and the screw motor.

[0015] Beneficial effects: before the water-absorbing sponge layer of the wetting roller is pressed against the entire surface of the corrugated cardboard, it has been soaked by the water seeping out of the water storage tank. Therefore, when the surface of the corrugated cardboard is pressed, the water in the water-absorbing sponge layer is squeezed out and pressed toward the surface of the corrugated cardboard. Under the action of the squeezing force, the squeezed water can easily penetrate into the dry surface of the corrugated cardboard for pre-wetting, and the wetting effect is better. After the surface of the corrugated cardboard is pre-wetted, it continues to be driven forward by the conveyor belt, and is further moistened by the atomized water droplets sprayed by the spray humidifier when passing through it. Since the surface of the corrugated cardboard has been pre-wetted, the atomized water droplets fall on the wet surface of the corrugated cardboard and are easily attracted by the water droplets on the wet surface of the corrugated cardboard, which speeds up the penetration into the surface of the corrugated cardboard, and the humidification effect is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The present invention is a schematic diagram showing the structure of a conveyor belt, a first mounting frame, a second mounting frame and a spray humidifier of a corrugated board production line.

[0017] Figure 2 yes Figure 1 A schematic diagram of the structure of the corrugated board production line after the conveyor belt, the second mounting frame and the spray humidifier are hidden.

[0018] Figure 3 is along Figure 2 Simple cross-sectional view along the AA direction.

[0019] Figure 4 yes Figure 2 A schematic diagram of a local explosion.

[0020] Figure 5 yes Figure 4 A schematic structural diagram of the wetting roller, guide block, limit plate and L-shaped limit plate from another perspective.

[0021] Explanation of symbols:

[0022] 1- conveyor belt; 2- first mounting frame; 21- side; 211- guide groove; 3- wetting roller; 31- roller body; 311- water seepage hole; 312- rotating shaft; 32- water-absorbing sponge layer; 33- water storage bin; 331- bin opening; 41- guide block; 42- limit plate; 43- L-shaped limit plate; 431- threaded hole; 5- screw motor; 51- screw; 6- second mounting frame; 7- distance sensor; 8- spray humidifier. DETAILED DESCRIPTION

[0023] The present invention is further described in detail below in conjunction with specific implementation methods.

[0024] The corrugated cardboard production line includes a conveyor belt and a creasing device arranged in front of the conveyor belt. The conveyor belt 1 conveys the corrugated cardboard to be creasing forward to the creasing device for creasing. Before creasing, the corrugated cardboard to be creasing needs to be humidified to improve the compression resistance and avoid surface cracking during creasing. Figure 1 The left and right side parts 21 of the first mounting frame 2 extend downward toward the conveyor belt 1, and the left and right side parts 21 are detachably screwed to the left and right parts of the conveyor belt 1, respectively. Figure 2 Between the left and right sides 21 of the first mounting frame 2, there are provided left and right horizontally placed wetting rollers 3, the wetting rollers 3 are shown Figure 4 , including a roller body 31 placed horizontally on the left and right sides and a water-absorbing sponge layer 32 sleeved outside the roller body 31. The roller body 31 is left hollow inside to form a water storage tank 33 (see Figure 3 ), water storage tank 33 hatch 331 (see Figure 5 ) is opened on the left end wall of the roller body 31, and the opening 331 is detachably covered with a sealing plug (not shown in the figure); a plurality of water seepage holes 311 arranged in a circumferential array are opened on the side wall of the roller body 31, as shown in FIG. Figure 3 These water seepage holes 311 penetrate the side wall of the roller body 31 and lead to the water storage bin 33 , so that the water in the water storage bin 33 can seep into the water-absorbing sponge layer 32 sleeved outside the roller body 31 through these water seepage holes 311 .

[0025] See Figure 4 The left and right sides 21 of the first mounting frame 2 are respectively provided with vertical guide grooves 211 that penetrate left and right, and the two vertical guide grooves 211 are symmetrical. The roller body 31 of the moistening roller 3 has left and right rotating shafts 312 extending toward the left and right sides respectively; the ends of the left and right rotating shafts 312 are respectively provided with left and right guide blocks 41, and the rotating shafts 312 together with the roller body 31 can rotate together with the guide blocks 41 around their own transverse axes; the left and right guide blocks 41 are respectively inserted and accommodated in the left and right vertical guide grooves 211, and the moistening roller 3 is movably connected to the first mounting frame 2 through the left and right guide blocks 41, and can move up and down along the left and right guide grooves 211 together with the left and right guide blocks 41.

[0026] A limit plate 42 is fixedly installed on the left side of the left guide block 41, and the limit plate 42 limits the left guide block 41 from exiting the left guide groove 211 to the right; an L-shaped limit plate 43 is fixedly installed on the outer side of the right guide block 41, and the L-shaped limit plate 43 limits the right guide block 41 from exiting the right guide groove 211 to the left, and a vertical threaded through hole 431 is opened in the horizontal plate body of the L-shaped limit plate 43; a screw motor 5 is fixedly installed on the right side wall of the first mounting frame 2, and the screw motor 5 is downwardly aligned with the L-shaped limit plate 43, and the screw 51 of the screw motor 5 extends downward and is screwed The screw motor 5 drives the L-shaped limit plate 43 connected to the right guide block 41 through its screw 51. The forward or reverse rotation of the screw 51 of the screw motor 5 can drive the L-shaped limit plate 43 together with the right guide block 41 installed thereon to move upward or downward along the vertical guide groove 211 relative to the first mounting frame 2, thereby driving the roller body 31 of the wetting roller 3, the left guide block 41, the limit plate 42 and the water-absorbing sponge layer 32 sleeved on the roller body 31 to move upward or downward.

[0027] See Figure 1 , a second mounting frame 6 is provided behind the first mounting frame 2, and the second mounting frame 6 is installed on the conveyor belt 1 in the same manner as the first mounting frame 2. Three distance measuring sensors 7 are installed on the second mounting frame 6, which are arranged at intervals on the left and right, facing downward to the conveyor belt 1, and can sense the height of the corrugated cardboard passing on the conveyor belt 1. In this embodiment, the distance measuring sensor 7 can be an ultrasonic sensor and / or an infrared sensor. Two groups of spray humidifiers 8 are provided in front of the first mounting frame 2, and the two groups of spray humidifiers 8 are both located above the conveyor belt 1, one in front and one behind, arranged along the conveyor belt 1. The spray humidifier 8 is a prior art, and its working principle and internal structure are not repeated here. A control panel (not shown in the figure) for production personnel to operate is provided on the side wall of the conveyor belt 1, and a controller (not shown in the figure) is built into the control panel, and the controller controls the control panel, the three sensors 7 and the screw motor 5 respectively.

[0028] Before humidifying the corrugated cardboard (not shown in the figure), the production personnel need to first remove the sealing plug on the end wall of the roller body 31 of the wetting roller 3, add a proper amount of clean water into the water storage bin 33 through the opening 331 of the water storage bin 33, and then re-close the opening 331 with the sealing plug; then manually rotate the wetting roller 3, so that the clean water in the water storage bin 33 continuously and slowly leaks from the water seepage hole 311 to the entire water-absorbing sponge layer 32 outside the roller body 31 under the action of gravity, thus completing the preparation work before humidifying the corrugated cardboard. Afterwards, the corrugated cardboard to be indented first passes through the second mounting frame 6 at the rear while being conveyed forward by the conveyor belt 1 to the indentation device (not shown in the figure). The three distance measuring sensors 7 on the second mounting frame 6 sense the height of the corrugated cardboard passing by and transmit the sensing data to the controller; the corrugated cardboard continues to be conveyed forward by the conveyor belt 1 to the first mounting frame 2. During this process, the controller controls the screw 51 of the screw motor 5 to rotate forward according to the received sensing data, thereby driving the L-shaped limit plate 43 together with the right guide block 41 installed thereon to move downward along the vertical guide groove 211 relative to the first mounting frame 2, thereby driving the wetting roller 3 to move downward close to the conveyor belt 1 until the water-absorbing sponge layer 32 of the wetting roller 3 that has been soaked with water can press against the entire upper surface of the corrugated cardboard that is being conveyed forward by the conveyor belt 1. When the water-absorbing sponge layer 32 is pressed against the surface of the corrugated board, it rotates around its own horizontal axis under the action of the friction between the water-absorbing sponge layer 32 and the corrugated board, and squeezes out the water in the water-absorbing sponge layer 32 and presses it onto the surface of the corrugated board. Under the action of the squeezing force, the squeezed water can easily penetrate into the dry surface of the corrugated board for pre-wetting, and the wetting effect is good. After the surface of the corrugated board is pre-wetted, it continues to be driven forward by the conveyor belt 1, and is further wetted by the atomized water droplets sprayed by the spray humidifier 8 when passing through it. Since the surface of the corrugated board has been pre-wetted, the atomized water droplets fall on the wet surface of the corrugated board and are easily attracted by the water droplets on the wet surface of the corrugated board, which speeds up the speed of penetrating into the surface of the corrugated board, and the humidification effect is good. In other embodiments, the sealing plug of the wetting roller 3 may be equipped with a water supply pipe, which passes through and is accommodated in the sealing plug. When the sealing plug covers the opening 331 of the water storage bin 33, the water supply pipe is connected to the water storage bin 33. In this way, the water supply pipe can be connected to the water storage bin 33 by a water supply pump outside the conveyor belt 1 to continuously supply water to the water storage bin 33.

[0029] In this embodiment, the rotation of the moistening roller 3 around its own horizontal axis is either achieved by manual rotation by the production personnel or by the friction between the water-absorbing sponge layer 32 and the corrugated cardboard. In other embodiments, the roller body 31 of the moistening roller 3 can be equipped with a driving motor, which is connected to and controlled by the controller, and the controller controls the driving motor to drive the moistening roller 3 in the corresponding process. In addition, in this embodiment, the moistening roller 3 and two groups of spray humidifiers 8 are both arranged above the conveyor belt 1 to pre-moisten and humidify the upper surface of the corrugated cardboard respectively; in other embodiments, the conveyor belt 1 can be changed to leave a partial hollow in the middle, and the moistening roller 3 and two groups of spray humidifiers 8 are correspondingly changed to be arranged below the hollow part of the conveyor belt 1 to pre-moisten and humidify the lower surface of the corrugated cardboard respectively.

[0030] The above is only an implementation method of the invention, and does not limit the scope of patent protection. Those skilled in the art can make non-substantial changes or substitutions based on the invention, which still fall within the scope of patent protection.

Claims

1. A corrugated cardboard production line with good humidification effect, comprising a conveyor belt and a creasing device arranged in front of the conveyor belt, the conveyor belt conveys the corrugated cardboard to be creasing forward to the creasing device for creasing, and a spray humidifier is arranged on the conveyor belt to spray humidify the corrugated cardboard to be creasing on the creasing device, characterized in that: A moistening roller is provided on the conveyor belt and is located behind the spray humidifier; The moistening roller comprises a roller body placed horizontally on the left and right sides and a water-absorbing sponge layer sleeved on the roller body. The interior of the roller body is left hollow to form a water storage tank. The side wall of the roller body is provided with a plurality of water seepage holes penetrating through the side wall of the roller body and leading to the water storage tank, so that the water stored in the water storage tank can seep into the water-absorbing sponge layer outside the roller body through these water seepage holes. The wetting roller is equipped with a vertical screw motor, which moves close to the conveyor belt under the drive of the screw motor, so that the water-absorbing sponge layer of the wetting roller, which has been soaked with water, can be pressed against the entire surface of the corrugated cardboard passed by the conveyor belt in turn to pre-wet the surface.

2. The corrugated board production line according to claim 1, characterized in that: The wetting roller is specifically arranged above the conveyor belt, and is driven by the screw motor to move downward close to the conveyor belt to pre-wet the entire upper surface of the corrugated cardboard passing by.

3. The corrugated board production line according to claim 2, characterized in that: It comprises a mounting frame which is detachably mounted on the conveyor belt and is located behind the spray humidifier. The wetting roller is movably connected to the mounting frame and can move up and down relative to the mounting frame under the driving of the screw motor.

4. The corrugated board production line according to claim 3, characterized in that: The mounting frame has a side portion extending toward the conveyor belt, and the side portion is provided with a vertical guide groove; a guide block is installed at the end of the roller body of the wetting roller, and the wetting roller can rotate around the horizontal axis relative to the guide block; the guide block is inserted into and accommodated in the vertical guide groove, and the screw motor is specifically connected to the guide block through its screw drive, and the forward or reverse rotation of the screw of the screw motor can drive the guide block together with the roller body of the wetting roller to move upward or downward along the vertical guide groove.

5. The corrugated board production line according to claim 2, characterized in that: The spray humidifier is located above the conveyor belt to humidify the upper surface of the corrugated cardboard passing through.

6. The corrugated board production line according to claim 1 or 5, characterized in that: There are two groups of spray-type humidifiers, which are arranged one in front and one behind along the conveyor belt.

7. The corrugated board production line according to claim 1, characterized in that: The water storage bin opening is opened on the roller body end wall, and the bin opening is detachably covered with a sealing soft plug.

8. The corrugated board production line according to claim 1, characterized in that: An ultrasonic sensor and / or an infrared sensor is provided behind the moistening roller, which is used to sense the corrugated cardboard on the conveyor belt; A controller is included, and the controller controls the connection of the sensor and the connection of the screw motor.

Images