Corrugated paper blowing and sucking conveyor of paper mounting machine

Abstract

The invention discloses a corrugated paper blowing and sucking conveyor of a paper mounting machine. The corrugated paper blowing and sucking conveyor comprises a case body, a conveying belt assembly and a fan, according to a traditional natural airing or integral baking mode, heat and air flow mainly act on the surface of a paperboard, and an adhesive layer at the bonding position of a corrugated middle core and surface paper is difficult to effectively influence. Airflow forcibly enters from the wavy through holes in one end of the corrugated paper and flows out from the other end of the corrugated paper, so that the airflow passes through the cavity channel of the corrugated medium paper at a high speed. The air flow can directly act on the gluing face hidden in the corrugated structure, the contact area between glue and dry air is greatly increased, the air exchange efficiency is greatly improved, water or solvent in the glue is rapidly taken away, and the glue is promoted to be solidified from the inside. Therefore, the problem that the whole paperboard is soft due to the fact that the center glue layer is not dry is solved, the corrugated paperboard obtains enough initial rigidity and stiffness when leaving the conveyor, and subsequent stacking or direct entering of the next procedure is facilitated.

Description

Technical Field

[0001] This invention relates to the field of paper mounting machine technology, and in particular to a corrugated paper blowing and suction conveyor for a paper mounting machine. Background Technology

[0002] Corrugated cardboard, also known as corrugated paper or fluted paper, is a composite paperboard structure made of at least one layer of corrugated (corrugated) core paper bonded together with one or more layers of flat linerboard. Figure 1 As shown. Due to its excellent mechanical properties, low cost, good processability and environmental friendliness, it has become one of the most important packaging materials worldwide, and is widely used in product transport packaging, sales display and cushioning pads.

[0003] Corrugated core paper is processed into a continuous arched corrugated structure. This structure effectively converts the pressure from the vertical plane into stress within the core paper plane when under stress, thus dissipating energy and providing excellent compressive strength and cushioning performance. The surface linerboard or linerboard provides the necessary rigidity and printability. Based on the shape, height, and density of the corrugations, the industry mainly classifies them into A-flute (excellent cushioning), B-flute (excellent compressive strength), C-flute (balanced performance), and micro-flute such as E-flute and F-flute (excellent printability). Based on the number of layers, the most common structures include single-faced corrugated board (three layers), double-faced single-faced corrugated board (five layers, i.e., single corrugated), double-faced double-faced corrugated board (seven layers, i.e., double corrugated), and heavy-duty corrugated board with even more layers.

[0004] The bonding between corrugated paper and face paper is usually done by a laminating machine. After lamination, the corrugated paper and face paper are bonded together with glue. However, after lamination, since the whole piece of cardboard is usually one square meter in area, the glue does not dry easily, making the whole piece of cardboard very soft and weak. To solve this problem, the traditional method is to put the cardboard into a baking device for baking. The whole process is cumbersome and inefficient. Summary of the Invention

[0005] Based on the above, the purpose of this invention is to provide a corrugated paper blowing and suction output conveyor for a paper mounting machine, which can make the glue dry quickly, ensure the rigidity of the corrugated cardboard, and improve efficiency.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: This invention provides a corrugated paper blowing and suction conveyor for a paper mounting machine, comprising: The chassis has a hollow internal structure, and the upper surface of the chassis has several first ventilation holes. The internal part of the chassis is divided into an air blowing box and an air suction box by a partition plate. A conveyor belt assembly is installed above the machine housing, and a conveying channel is formed between the conveyor belt assembly and the machine housing. The air blowing box is located on one side of the material inlet end of the conveying channel, and the air suction box is located on the side near the material outlet end of the conveying channel. A blower, one end of which is connected to the blowing box and the other end of which is connected to the suction box; During the conveying process of corrugated paper in the conveying channel between the machine housing and the conveyor belt assembly, airflow enters the blowing box from the fan and flows out from the first vent at the top of the blowing box. Airflow enters from the wavy through-hole at one end of the corrugated paper and flows out from the wavy through-hole at the other end of the corrugated paper. Airflow enters the suction box through the first vent above the suction box and flows back into the fan to form a cycle.

[0007] Preferably, the conveyor belt assembly includes a conveying drive shaft rotatably disposed at one end of the housing and a follower shaft disposed at the other end of the housing, and a ventilated conveyor belt is sleeved between the drive shaft and the follower shaft; The conveyor belt assembly also includes a conveyor motor, the output end of which is provided with a drive wheel, and one end of the drive shaft is coaxially provided with a follower wheel. A synchronous belt is sleeved between the drive wheel and the follower wheel.

[0008] Preferably, the ventilated conveyor belt includes an attachment layer, on which a plurality of second vent holes are formed, and a ventilated elastic buffer layer is attached to the attachment layer.

[0009] Preferably, a first sensor is provided above the inlet end of the conveying channel, and a second sensor is provided above the outlet end of the conveying channel; When the first sensor detects the head of the corrugated paper entering the feed end of the conveying channel, the conveyor belt assembly starts to convey the corrugated paper. When the first sensor detects the tail of the corrugated paper entering the feed end of the conveying channel, the blower starts to blow and suck air. When the second sensor detects the head of the corrugated paper reaching the discharge end of the conveying channel, the blower stops, and blowing and sucking air cease.

[0010] Preferably, a heating box is provided between the air blowing box and the blower; The heating box includes a heating inlet and a heating outlet. The heating inlet is connected to the fan, and the heating outlet is connected to the air blowing box. A heating wire is also installed inside the heating box.

[0011] The beneficial effects of this invention are as follows: (1) Traditional natural air drying or overall baking methods primarily affect the surface of the cardboard, making it difficult to effectively influence the adhesive layer at the bonding point between the corrugated core and the face paper. This invention achieves high-speed airflow through the cavity channels of the corrugated core paper by forcing airflow into the corrugated paper through a wavy perforation at one end and out at the other. The airflow can directly act on the bonding surface hidden inside the corrugated structure, greatly increasing the contact area and ventilation efficiency between the adhesive and the dry air, thereby quickly removing moisture or solvent from the adhesive and promoting curing of the adhesive from the inside. This avoids the overall "softness" problem caused by the cardboard not drying in the center adhesive layer, allowing the corrugated cardboard to obtain sufficient initial rigidity and stiffness when leaving the conveyor, facilitating subsequent stacking or direct entry into the next process.

[0012] (2) The traditional solution is to remove the laminated flexible cardboard from the production line and place it in a separate baking device for processing. This process involves handling, waiting, and secondary loading and unloading, leading to production interruptions and extended cycles. This invention integrates the drying function into the blowing and suction conveying process, allowing the drying process to proceed synchronously with the cardboard's conveying and output, achieving continuous production of "conveying and drying simultaneously." This eliminates the separate baking waiting process and material handling steps, thereby significantly shortening the overall production cycle and improving the production line's efficiency.

[0013] (3) By installing a first sensor and a second sensor at the inlet and outlet of the conveyor channel, the system can detect the position of the corrugated cardboard in real time. Based on the sensor signals, the system can automatically control the start and stop of the conveyor belt assembly and the start and stop of the blower. Specifically, the blowing / suction drying is only started when the cardboard actually enters the conveyor channel, and it automatically stops after the cardboard leaves, ensuring that the airflow flows in from the tail of the cardboard and flows out from the head of the cardboard.

[0014] (4) The elastic buffer layer of the ventilated conveyor belt provides the necessary friction for the corrugated cardboard during transport, while also buffering the pressure on the surface of the corrugated cardboard. In particular, it protects the freshly pasted, finely printed face paper, preventing the hard conveyor belt or machine parts from scratching or damaging the paper surface under pressure, thus ensuring the appearance quality of the final product. Furthermore, both the second vent hole and the ventilated elastic buffer layer of the ventilated conveyor belt are ventilated, ensuring the connection between the airflow in the conveying channel and the external airflow, and ensuring the normal conduction of blowing and suction airflow. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the content of the embodiments of the present invention and these drawings without creative effort.

[0016] Figure 1 A schematic diagram of the existing corrugated cardboard structure; Figure 2 This invention provides a schematic diagram of the structure of a corrugated paper blowing and suction conveyor for a paper mounting machine. Figure 3 This invention provides a top view of the casing of a corrugated paper blowing and suction conveyor for a paper mounting machine; Figure 4 This invention provides a schematic diagram of the structure of a ventilation conveyor belt for a corrugated paper blowing and suction conveyor in a paper mounting machine. Figure 5 This invention provides a schematic diagram of a corrugated paper blowing and suction conveyor with a heating box for a paper mounting machine. Figure 6 This is a schematic diagram of the internal structure of the heating box provided in an embodiment of the present invention.

[0017] In the picture: 1. Chassis; 11. First vent; 12. Partition plate; 13. Air blowing box; 14. Air suction box; 2. Conveyor belt assembly; 21. Conveyor drive shaft; 22. Follower shaft; 23. Ventilated conveyor belt; 231. Attachment layer; 232. Second vent; 233. Ventilated elastic buffer layer; 24. Conveyor motor; 241. Drive wheel; 242. Follower wheel; 243. Synchronous belt; 3. Fan; 31. First air duct; 32. Second air duct; 4. First sensor; 5. Second sensor; 6. Heating box; 61. Heating wire; 62. Heating inlet; 63. Heating outlet. Detailed Implementation

[0018] To make the technical problems solved by the present invention, the technical solutions adopted, and the technical effects achieved clearer, the technical solutions of the embodiments of the present invention will be further described in detail 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.

[0019] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0020] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0021] In the description of this embodiment, the terms "upper," "lower," "left," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, 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 the present invention. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.

[0022] Please see Figures 2 to 4 This embodiment provides a corrugated cardboard blowing and suction conveyor for a laminating machine. The conveyor is directly connected to the output end of the laminating machine and is used to receive the corrugated cardboard that has just been laminated and glued but has not yet cured, and to dry and convey it online, so as to solve the problems of low efficiency and insufficient initial rigidity of cardboard in traditional offline baking methods.

[0023] The conveyor mainly includes a housing 1, a conveyor belt assembly 2, and a fan 3. The housing 1 is a hollow rectangular box structure. Its top serves as a work surface and has multiple rows of first ventilation holes 11. The interior of the housing 1 is strictly divided into two independent chambers by a longitudinally arranged partition plate 12: an air blowing box 13 located on the feed end side and an air suction box 14 located on the discharge end side.

[0024] The conveyor belt assembly 2 is mounted above the housing 1. The conveyor belt assembly 2 includes a drive shaft 21 and a follower shaft 22, which are rotatably mounted at both ends of the housing 1 along its length via bearing seats. An annular ventilated conveyor belt 23 is fitted between the drive shaft and the follower shaft 22. An appropriate clearance is maintained between the two sides of the ventilated conveyor belt 23 and the top surface of the housing 1 to allow the cardboard to enter and exit smoothly. The ventilated conveyor belt 23 and the top surface of the housing 1 together form a conveying channel for the corrugated cardboard to pass horizontally. The air blowing box 13 is located below the inlet end of the conveying channel, while the air suction box 14 is located below the outlet end of the conveying channel.

[0025] The conveying drive shaft 21 is driven by a conveying motor 24. A drive wheel 241 is mounted on the output shaft of the conveying motor 24, and a follower wheel 242 is coaxially mounted on one end of the conveying drive shaft 21. The two are connected by a synchronous belt 243, thereby providing stable and reliable conveying power.

[0026] In particular, such as Figure 4 As shown, the ventilated conveyor belt 23 adopts a multi-layer composite structure to achieve a balance between protection and ventilation. Its base layer is an attachment layer 231 made of high-strength, low-elongation synthetic fiber fabric, on which a large number of tiny second ventilation holes 232 are densely arranged in a matrix. On the working surface of the attachment layer 231 (i.e., the side in contact with the corrugated cardboard), a ventilated elastic buffer layer 233 is firmly attached. This layer is preferably porous foamed silicone, an elastic polymer material with a microporous structure, or a strip-shaped polymer with cross-bonded vents. The elastic buffer layer effectively buffers the pressure on the surface of the corrugated cardboard (especially the finely printed surface), preventing scratches and ensuring the product's appearance quality. Simultaneously, the second ventilation holes 232 and the micropores of the elastic buffer layer itself ensure smooth airflow through the conveyor belt, achieving ventilation with external airflow.

[0027] The fan 3 is a high-pressure centrifugal fan 3, whose outlet is connected to the inlet of the blowing box 13 through the first air duct 31, and whose inlet is connected to the outlet of the suction box 14 through the second air duct 32. Thus, the fan 3, the blowing box 13, the suction box 14 and the connecting air ducts form a closed air circulation path.

[0028] To achieve intelligent and energy-saving operation, a first sensor 4 (such as a photoelectric sensor) is installed above the feed end of the conveying channel, and a second sensor 5 is installed above the discharge end.

[0029] In this embodiment of the invention, when the laminated corrugated cardboard reaches the inlet of the conveyor channel and triggers the first sensor 4, the control system starts the conveyor motor 24 to begin conveying. The blower 3 is only started after the first sensor 4 detects that the tail of the cardboard has completely entered the channel. When the head of the cardboard moves to the outlet and triggers the second sensor 5, the blower 3 immediately stops. This achieves fully automatic operation of the equipment and ensures that the blowing / suction drying function is activated only when the cardboard actually covers the drying area, avoiding idle energy consumption. The operation is intelligent, precise, and energy-efficient. Simultaneously, it ensures that the airflow enters from the tail of the cardboard and exits from the head.

[0030] After the blower 3 starts, the circulating airflow is sprayed vertically upward from the first vent 11 at the top of the air blowing box 13. Due to the coverage of the cardboard and the ventilation conveyor belt 23, part of the airflow passes through the ventilation conveyor belt, while part of the airflow is forced into the corrugated groove opening at the tail of the corrugated cardboard and travels at high speed along the hollow channel of the corrugated core paper to the other end, and is finally captured and recovered by the negative pressure of the suction box 14. The airflow achieves "passing through" from the inside, directly and forcibly acting on the hidden glued surface. The blowing and suction greatly increases the effective drying area and air exchange efficiency, thereby quickly removing moisture from the glue layer and promoting the glue to cure from the inner core. This fundamentally solves the problem of the cardboard being "soft" and allows the cardboard to obtain excellent initial rigidity and stiffness when it is output.

[0031] Please see Figure 5 and Figure 6 A heating box 6 is connected in series to the first air duct 31 between the air outlet of the fan 3 and the air inlet of the air blowing box 13. The heating box 6 contains a heating wire 61. The heating box 6 has a heating inlet 62 and a heating outlet 63, which are respectively connected to the air outlet of the fan 3 and the air inlet of the air blowing box 13. The heating wire 61 is electrically connected to a temperature control system, allowing for precise setting of the air supply temperature.

[0032] When the system starts, the circulating airflow first flows through the heating box 6 and is heated to a preset temperature (e.g., 40℃-60℃) by the heating wire 61 before entering the air blowing box 13. Subsequently, the warm, dry airflow is sent into the system. The heat is directly transferred to the airflow flowing through the corrugated interior, significantly improving the curing speed of the adhesive and doubling the drying efficiency. Note that the above is only a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A corrugated paper blowing and suction conveyor for a paper mounting machine, characterized in that, include: The chassis has a hollow internal structure, and the upper surface of the chassis has several first ventilation holes. The internal part of the chassis is divided into an air blowing box and an air suction box by a partition plate. A conveyor belt assembly is installed above the machine housing, and a conveying channel is formed between the conveyor belt assembly and the machine housing. The air blowing box is located on one side of the material inlet end of the conveying channel, and the air suction box is located on the side near the material outlet end of the conveying channel. A blower, one end of which is connected to the blowing box and the other end of which is connected to the suction box; During the conveying process of corrugated paper in the conveying channel between the machine housing and the conveyor belt assembly, airflow enters the blowing box from the fan and flows out from the first vent at the top of the blowing box. Airflow enters from the wavy through-hole at one end of the corrugated paper and flows out from the wavy through-hole at the other end of the corrugated paper. Airflow enters the suction box through the first vent above the suction box and flows back into the fan to form a cycle.

2. The corrugated paper blowing and suction conveyor of a paper mounting machine according to claim 1, characterized in that, The conveyor belt assembly includes a conveyor drive shaft rotatably disposed at one end of the housing and a follower shaft disposed at the other end of the housing, and a ventilated conveyor belt is sleeved between the drive shaft and the follower shaft; The conveyor belt assembly also includes a conveyor motor, the output end of which is provided with a drive wheel, and one end of the drive shaft is coaxially provided with a follower wheel. A synchronous belt is sleeved between the drive wheel and the follower wheel.

3. The corrugated paper blowing and suction conveyor of a paper mounting machine according to claim 2, characterized in that, The ventilated conveyor belt includes an attachment layer, on which a plurality of second vent holes are provided, and a ventilated elastic buffer layer is attached to the attachment layer.

4. The corrugated paper blowing and suction conveyor of a paper mounting machine according to claim 1, characterized in that, A first sensor is installed above the inlet end of the conveying channel, and a second sensor is installed above the outlet end of the conveying channel. When the first sensor detects the head of the corrugated paper entering the feed end of the conveying channel, the conveyor belt assembly starts to convey the corrugated paper. When the first sensor detects the tail of the corrugated paper entering the feed end of the conveying channel, the blower starts to blow and suck air. When the second sensor detects the head of the corrugated paper reaching the discharge end of the conveying channel, the blower stops, and blowing and sucking air cease.

5. A corrugated paper blowing and suction conveyor for a paper mounting machine according to any one of claims 1 to 4, characterized in that, A heating box is provided between the air blowing box and the blower; The heating box includes a heating inlet and a heating outlet. The heating inlet is connected to the fan, and the heating outlet is connected to the air blowing box. A heating wire is also installed inside the heating box.

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