Production line capable of removing dust on surfaces of paperboards

Abstract

The utility model relates to the field of carton manufacturing, in particular to a production line capable of removing dust on the surface of a paperboard. The utility model provides a production line which comprises a gluing device, a printing device and a conveying device for conveying paperboards to the gluing device and the printing device, and further comprises a dust removal device, and the dust removal device comprises a dust baffle with a mounting part, a dust collection device and a dust collection device, air nozzles are arranged on the dust board, and each air nozzle is used for spraying air to the passing paperboards to blow up impurities on the surfaces of the paperboards in a state that the air supply pump supplies air; and two dust suction air pipes are arranged on the dust baffle for air suction and dust suction. On one hand, the dust removal device of the production line does not need to be independently arranged and does not affect the layout of the conveying device, on the other hand, the dust removal device can be flexibly installed at the position, away from the gluing device or the printing device, of the conveying device and does not need to be installed on the gluing device or the printing device, and blown impurities are not prone to floating into the gluing device or the printing device to cause pollution.

Description

Technical Field

[0001] The utility model relates to the field of carton manufacturing, in particular to a production line capable of removing dust from the surface of paperboard. Background Art

[0002] Most of the existing cartons are corrugated cartons, which are made by folding corrugated cardboard; the corrugated cardboard is a multi-layer structure, which consists of a plate-like upper paper cushion body, a wavy corrugation and a plate-like lower paper cushion body from top to bottom. The existing corrugated cardboard production line usually includes a plurality of independent devices such as a cutting device, a pressing device, a gluing device, a bonding device, a printing device, a trimming device and a creasing and folding device, which are connected by a conveyor belt. The cutting device cuts the paper raw material into plate-like paper pieces of preset size, which are the paper cushion bodies. The pressing device includes two pressing rollers with wavy outer surfaces, which mesh together and can heat their own surfaces; a part of the paper cushion body is conveyed to the pressing device by the conveyor belt and passes between the two pressing rollers, that is, it is heated and pressed into a wavy shape by the two pressing rollers, thereby obtaining wavy corrugations. The finished corrugated paper is conveyed to the gluing device by a conveyor belt for double-sided gluing, and then conveyed to the bonding device; the remaining paper pads are also conveyed to the bonding device by a conveyor belt, and are divided into two groups by the bonding device, and are bonded to the upper and lower surfaces of the double-sided gluing corrugated paper one above and one below. After bonding, a semi-finished corrugated paperboard is obtained. The semi-finished corrugated paperboard then needs to be printed with patterns and texts on its surface by a printing device, and then trimmed by a trimming device. After being crimped and folded by a crimping and folding device (it can also be crimped and folded first and then printed according to needs), the finished corrugated paperboard is obtained, and the user can fold it into a corrugated box according to the crimping. Due to its material, the corrugated paperboard is easy to accumulate impurities such as paper scraps and dust on the surface after being cut by the above-mentioned cutting device. These impurities accumulated on the surface will affect the gluing and printing effects during the gluing and printing process. For this reason, the existing corrugated cardboard production line is usually equipped with a jet dust removal device to remove dust from the cardboard surface. The common jet dust removal device includes a plurality of vertical air nozzles arranged in an array. These air nozzles are connected to the air supply by an air supply pump and are fixedly installed in an array arrangement at the rear of the gluing device (or printing device), perpendicular to the upper surface of the conveyor belt and downwardly aligned with the upper surface of the conveyor belt. In this way, the cardboard is conveyed forward by the conveyor belt, and when passing under these air nozzles, impurities on the surface are blown up by the air nozzles for dust removal. The dust-removed cardboard is then conveyed forward by the conveyor belt to the gluing device for gluing. The advantage of this jet dust removal device is that it has a simple structure and can be directly installed on the gluing device. It does not need to be installed as an independent device in the production line and does not affect the layout of the conveyor belt. Since the multiple air nozzles of the jet dust removal device are perpendicular to the upper surface of the conveyor belt, when the cardboard is conveyed to the bottom of the air nozzle by the conveyor belt, these air nozzles are perpendicular to the upper surface of the cardboard and blow air downward at the cardboard. Impurities blown up at this angle are easy to float around and pollute the environment. The jet dust removal device is installed on the gluing device, which is close to the gluing device. Impurities are easy to float around in the gluing device and cause pollution. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a production line capable of removing dust from the surface of cardboard. On the one hand, the dust removal device of the production line does not need to be independently arranged and does not affect the layout of the conveying device. On the other hand, it can be flexibly installed at a position of the conveying device away from the gluing device or the printing device and does not need to be installed on the gluing device or the printing device. The impurities blown up are not easy to float into the gluing device or the printing device to cause pollution.

[0004] In order to solve the above problems, the utility model provides a production line capable of removing dust from the surface of paperboard, including a gluing device and a printing device, a conveying device for conveying paperboard to the gluing device and the printing device, and a dust removal device. Specifically, the dust removal device includes:

[0005] A dust shield having a mounting portion, which is detachably mounted on the conveying device through the mounting portion so as to partially cover the conveying device;

[0006] A first air jet nozzle is provided on the dust shield, which is perpendicular to the upper surface of the conveying device, so that it can be perpendicular to the upper surface of the paperboard being conveyed by the conveying device and directed downward to the middle of the paperboard;

[0007] A second air nozzle is provided on the dust shield, which is located on the left side of the first air nozzle and is tilted downward to the left and aligned with the left part of the upper surface of the conveying device so as to be tilted and aligned with the left part of the paperboard being conveyed and passed by the conveying device;

[0008] A third air nozzle is provided on the dust shield, which is located on the right side of the first air nozzle and is tilted downward to the right and aligned with the right part of the upper surface of the conveying device so as to be tilted and aligned with the right part of the paperboard being conveyed by the conveying device;

[0009] Air supply pumps are respectively connected to the air nozzles to supply air, and each air nozzle, when supplied with air by the air supply pump, sprays air to corresponding parts of the paperboard being conveyed by the conveying device to blow away impurities on the surface of the paperboard;

[0010] Two dust suction ducts are respectively arranged on the left and right sides of the conveying device on the dust shield, and the dust suction ducts are equipped with negative pressure pumps. Under the action of the negative pressure pumps, air and dust are sucked from the space of the dust shield covering the conveying device.

[0011] Furthermore, the dust shield includes two vertical side dust shields, each of which is provided with the mounting portion, and the two side dust shields are arranged in parallel and spaced apart, one on the left and one on the right, and are detachably mounted to the left and right sides of the conveying device through their respective mounting portions.

[0012] Further: the dust shield includes an upper dust shield, which covers the two side dust shields, and the left and right ends are respectively detachably connected to the upper parts of the two side dust shields; the first air nozzle, the second air nozzle and the third air nozzle are all installed on the upper dust shield, located below the upper dust shield.

[0013] Furthermore, there are at least two first air nozzles, which are arranged one in front of the other, with the front first air nozzle being in front of the second air nozzle and the third air nozzle and / or the rear first air nozzle being behind the second air nozzle and the third air nozzle.

[0014] Furthermore: there are a plurality of the second air nozzles, which are arranged at intervals in the front and back; and / or there are a plurality of the third air nozzles, which are arranged at intervals in the front and back.

[0015] Furthermore, the dust shield includes a front dust shield, which is detachably connected to the front of the upper dust shield and blocks the front of the upper dust shield. The bottom surface of the front dust shield is higher than the upper surface of the conveying device to allow the cardboard to pass through.

[0016] Furthermore, the mounting portion is specifically a vertical mounting groove that transversely penetrates the side dust shield plate, and a bolt is accommodated in the mounting groove. When the bolt is screwed onto the conveying device, the side dust shield plate can be detachably mounted on the conveying device.

[0017] Furthermore, the two dust suction ducts are respectively arranged on the two side dust shields. Specifically, each side dust shield has left and right air vents that penetrate the board body. The two dust suction ducts are respectively aligned with and connected to the corresponding air vents from the outside of the left and right side dust shields.

[0018] Beneficial effects: On the one hand, the dust removal device is independently arranged, that is, it can be installed on the conveying device and partially cover the conveying device only through its installation part, which will not affect the conveying of the conveying device or the layout of the conveying device; on the other hand, the installer can detachably install the installation part of the dust shield to a position of the conveying device away from the gluing device or the printing device as needed, without having to be installed only on the gluing device or the printing device as in the prior art, and the blown impurities are not easy to float into the gluing device or the printing device to cause pollution. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the dust removal device installed on the conveying device.

[0020] Figure 2 yes Figure 1 A schematic diagram of a local explosion.

[0021] Figure 3 yes Figure 1 A simple top-down view of .

[0022] Figure 4 is along Figure 3 Simple cross-sectional view along the AA direction.

[0023] Explanation of symbols:

[0024] 1-transmission device; 11-mounting frame; 12-transmission roller; 2-dust removal device; 21-side dust shield; 211-mounting slot; 212-vent; 22-upper dust shield; 23-front dust shield; 3-cardboard; 41-first air nozzle; 42-second air nozzle; 43-third air nozzle; 5-dust suction duct; 6-space. DETAILED DESCRIPTION

[0025] The present invention is further described in detail below in conjunction with specific implementation methods.

[0026] The cardboard production line includes a gluing device for gluing (corrugated) cardboard and a printing device for printing on the surface of the cardboard. A conveying device is provided behind the gluing device and the printing device. The conveyor belt conveys the pre-treated cardboard to the gluing device and the printing device. The structure and principle of both the gluing device and the printing device are existing technologies and will not be described here.

[0027] A dust removal device needs to be installed on the conveyor behind the gluing device and / or the printing device to remove dust from the surface of the cardboard passing through. Take one section of the conveyor as an example, see Figure 1 The conveying device 1 includes a front and rear horizontal mounting frame 11, and a plurality of horizontal transmission rollers 12 are installed in the mounting frame 11. The cardboard 3 placed on these transmission rollers 12 is transmitted from the back to the front under the drive of the transmission rollers 12. The upper cut surfaces of these transmission rollers 12 are flush and serve as the upper surface of the conveying device 1. The upper surface of the cardboard 3 placed on these transmission rollers 12 is parallel to the upper cut surface of the transmission rollers 12. The dust removal device 2 includes two vertical side dust shields 21, which are arranged in parallel and spaced apart, and are symmetrically arranged on the left and right sides of the mounting frame 11 of the conveying device 1. Taking the side dust shield 21 on the left as an example, the front and rear ends of its bottom are provided with vertical mounting grooves 211 that penetrate the plate body from left to right (the front mounting groove 211 is blocked due to the angle of the drawing), and bolts (not shown in the drawing) are accommodated in the mounting grooves 211. The left side wall of the mounting frame 11 is provided with corresponding threaded holes (not shown in the drawing). In this way, the bolts are aligned and screwed into the corresponding threaded holes and tightened, and the side dust shield 21 on the left can be detachably mounted on the left side of the mounting frame 11. The side dust shield 21 on the right is symmetrical with the left side, and also has a vertical mounting groove 211, and can be detachably mounted on the right side of the mounting frame 11 in the same way. In this embodiment, the mounting groove 211 is used as the mounting portion of the side dust shield 21, so that the side dust shield 21 is installed on the mounting frame 11 of the conveying device 1. In other embodiments, the mounting portion may not be the mounting groove 211. Instead, a magnetic portion may be provided on the side dust shield 21 and a magnetically attracted portion may be provided on the mounting frame 11, so that the side dust shield 21 can be detachably mounted on the mounting frame 11 by magnetic attraction.

[0028] See Figure 1 and Figure 2The upper dust shield 22 is covered on the two side dust shields 21, and the left and right ends of the upper dust shield 22 are detachably screwed to the upper parts of the two side dust shields 21 by bolts (not shown in the figure) or screws (not shown in the figure), thereby partially covering a part of the driving roller 12 of the mounting frame 11. Figure 3 and Figure 4 , the upper dust shield 22 is provided with three first air nozzles 41, four second air nozzles 42 and four third air nozzles 43, all of which are located below the upper dust shield 22, wherein: the three first air nozzles 41 are in the middle; the four second air nozzles 42 and the four third air nozzles 43 are symmetrical one by one, and are respectively arranged on the left and right sides of the first air nozzle 41. The three first air nozzles 41 are arranged at intervals in front and back, perpendicular to the upper section of the transmission roller 12 (i.e., the upper surface of the conveying device 1), so that they can be perpendicular to the upper surface of the cardboard 3 passing through the transmission roller 12, and are downwardly aligned with the middle of the cardboard 3. The four second air nozzles 42 are also arranged at intervals in front and back, tilted to the lower left to align with the upper section of the transmission roller 12, so that they can tilt to align with the left part of the cardboard 3 passing through the transmission roller 12; the four third air nozzles 43 are symmetrical with the four second air nozzles 42, tilted to the lower right to align with the upper section of the transmission roller 12, so that they can tilt to align with the right part of the cardboard 3 passing through the transmission roller 12. An air supply pump (not shown in the figure) is placed above the upper dust shield 22. The air supply pump supplies air to each air nozzle through a multi-section air supply pipe. In this way, when the air supply pump supplies air, the three first air nozzles 41 sequentially spray air to the middle part of the passing cardboard 3, the four second air nozzles 42 sequentially spray air to the left part of the passing cardboard 3, and the four third air nozzles 43 sequentially spray air to the right part of the passing cardboard 3, so that impurities in the corresponding parts of the passing cardboard 3 can be blown away, and the upper surface of the passing cardboard 3 can be dusted. In other embodiments, the air supply pump can be placed on the left side of the side dust shield 21 on the left.

[0029] See Figure 3 Among the three first air nozzles 41, the first air nozzle 41 at the front is located ahead of the second air nozzle 42 and the third air nozzle 43 at the front on the upper dust shield 22. Since the first air nozzle 41 is perpendicular to the paperboard 3 (see Figure 4), so when the cardboard 3 is conveyed forward by the transmission roller 12, it will first be blown by the first air nozzle 41 at an angle perpendicular to the upper surface of the cardboard 3, so that the force on the cardboard 3 is relatively concentrated in the middle, and it is not easy to have a tendency to move to the left or right, and it is not easy to deviate to the left or right. Then, the cardboard 3 continues to be conveyed forward by the transmission roller 12 to the bottom of the second air nozzle 42 and the third air nozzle 43. Since the first air nozzle 41 keeps blowing air on the cardboard 3, it has a tendency to stick to the transmission roller 12 downward, and then the friction between the lower surface of the cardboard 3 and the transmission roller 12 becomes larger. In this state, even if the second air nozzle 42 and the third air nozzle 43 blow air on the cardboard 3, it is not easy to cause the cardboard 3 to deviate to the left or right. The first air nozzle 41 at the rear is positioned behind the second air nozzle 42 and the third air nozzle 43 at the rear on the upper dust shield 22. Thus, the first air nozzle 41 at the rear is the last air nozzle to leave the cardboard 3, ensuring the best dust removal effect in the middle of the cardboard 3 and preventing the second air nozzle 42 and the third air nozzle 43 from accidentally blowing a small amount of impurities into the middle of the cardboard 3 when blowing air to the cardboard 3.

[0030] After being blown up, impurities tend to float around in the air. Figure 4 The left side dust shield 21 is provided with two ventilation holes 212, one in front and one in the back (the front ventilation hole 212 is blocked due to the angle of the figure), and both ventilation holes 212 penetrate the plate body from left to right; two dust suction ducts 5 are respectively aligned with the two ventilation holes 212 from the left side of the left side dust shield 21, and are detachably bolted to the left side dust shield 21, thereby connecting to the space on the right side of the left side dust shield 21 through the ventilation holes 212. The right side dust shield 21 is symmetrical with the left side dust shield 21, and is also provided with ventilation holes 212 and two dust suction ducts 5. The four dust suction ducts 5 are all equipped with negative pressure pumps (not shown in the figure), which, under the action of the negative pressure pumps, jointly energize the space 6 (see FIG. 1 ) between the left and right dust shields 21 and covered by the upper dust shield 22. Figure 4 ) to vacuum and remove dust, so that the impurities blown up are not easy to be scattered everywhere. In addition, a front dust shield 23 is provided in front of the upper dust shield 22, and the front dust shield 23 is detachably screwed to the front of the upper dust shield 22, blocking the front of the upper dust shield 22; the bottom surface of the front dust shield 23 is higher than the upper cut surface of the transmission roller 12 and the upper surface of the paperboard 3 to allow the paperboard 3 to pass. Under the obstruction of the front dust shield 23, impurities are not easy to float forward to the gluing device (not shown in the figure) or the printing device (not shown in the figure) located in front of the conveying device 1, and are not easy to cause pollution.

[0031] 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 production line capable of removing dust from the surface of paperboard, comprising a gluing device and a printing device, and a conveying device for conveying paperboard to the gluing device and the printing device, characterized in that It also includes a dust removal device, which specifically includes: A dust shield having a mounting portion, which is detachably mounted on the conveying device through the mounting portion so as to partially cover the conveying device; A first air jet nozzle is provided on the dust shield, which is perpendicular to the upper surface of the conveying device, so that it can be perpendicular to the upper surface of the paperboard being conveyed by the conveying device and directed downward to the middle of the paperboard; A second air nozzle is provided on the dust shield, which is located on the left side of the first air nozzle and is tilted downward to the left and aligned with the left part of the upper surface of the conveying device so as to be tilted and aligned with the left part of the paperboard being conveyed and passed by the conveying device; A third air nozzle is provided on the dust shield, which is located on the right side of the first air nozzle and is tilted downward to the right and aligned with the right part of the upper surface of the conveying device so as to be tilted and aligned with the right part of the paperboard being conveyed by the conveying device; Air supply pumps are respectively connected to the air nozzles to supply air, and each air nozzle, when supplied with air by the air supply pump, sprays air to corresponding parts of the paperboard being conveyed by the conveying device to blow away impurities on the surface of the paperboard; Two dust suction ducts are respectively arranged on the left and right sides of the conveying device on the dust shield, and the dust suction ducts are equipped with negative pressure pumps. Under the action of the negative pressure pumps, air and dust are sucked from the space of the dust shield covering the conveying device.

2. The production line according to claim 1, characterized in that: The dust shield includes two vertical side dust shields, each of which is provided with the mounting portion, and the two side dust shields are arranged in parallel and spaced apart, one on the left and one on the right, and are detachably mounted to the left and right sides of the conveying device through their respective mounting portions.

3. The production line according to claim 2, characterized in that: The dust shield plate includes an upper dust shield plate, which covers the two side dust shield plates, and the left and right ends are respectively detachably connected to the upper parts of the two side dust shield plates; the first air nozzle, the second air nozzle and the third air nozzle are all installed on the upper dust shield plate and are located below the upper dust shield plate.

4. The production line according to claim 3, characterized in that: There are at least two first air nozzles, which are arranged one in front of the other, with the front first air nozzle being in front of the second air nozzle and the third air nozzle and / or the rear first air nozzle being behind the second air nozzle and the third air nozzle.

5. The production line according to claim 4, characterized in that: There are a plurality of the second air nozzles, which are arranged at intervals in the front and back; and / or there are a plurality of the third air nozzles, which are arranged at intervals in the front and back.

6. The production line according to claim 3, characterized in that: The dust shield includes a front dust shield which is detachably connected to the front of the upper dust shield and blocks the front of the upper dust shield. The bottom surface of the front dust shield is higher than the upper surface of the conveying device to allow the paperboard to pass through.

7. The production line according to claim 2, characterized in that: The mounting portion is specifically a vertical mounting groove that runs through the side dust shield plate transversely, and a bolt is accommodated in the mounting groove. When the bolt is screwed onto the conveying device, the side dust shield plate can be detachably mounted on the conveying device.

8. The production line according to claim 2, characterized in that: The two dust suction ducts are respectively arranged on the two side dust shielding plates. Specifically, each side dust shielding plate is provided with left and right air vents penetrating the plate body. The two dust suction ducts are respectively aligned with and connected to the corresponding air vents from the outsides of the left and right side dust shielding plates.

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