Segmented transfer and segmented heating double facer

Abstract

The present application relates to a kind of segmented conveying and segmented heating type double-sided machine, it includes front hot plate conveying part and rear conveying part, air-permeable heating transition section is provided between the front hot plate conveying part and rear conveying part, air-permeable heating transition section is provided with air-permeable heating channel, the upper side and / or lower side of air-permeable heating channel is provided with heat source, the upper side of air-permeable heating channel is provided with the cylinder of preventing scratch face paper printing layer, the cylinder is provided with multiple, and the cylinder is formed with air gap between cylinder and cylinder.The present application is conveyed by section, each conveying section can have different functions, for example: front part carries out fast double-sided heating, improves the adhesion speed of face paper and pit paper, then to air-permeable heating transition section, it can heat, continue to strengthen the adhesion of face paper and pit paper, while, again, air-permeable, accelerates drying, so that the adhesion paste of face paper and pit paper dry solid stable, and, avoid too much moisture in paper quality and influence paperboard quality, realize paperboard quality and production efficiency both.

Description

TECHNICAL FIELD

[0001] The present application relates to a kind of double facer of paperboard production equipment, in particular to a kind of segmented transmission and segmented heating type double facer for improving the bonding speed and quality of face paper (can be pre-printed paper) and see pit paper. BACKGROUND

[0002] The development of corrugated board production equipment is closely related to printing process, and current pre-printing is mainly divided into three types:

[0003] 1. Offset pre-printing: good printing quality, low plate making cost, low printing plate durability, and non-environmental solvent ink is selected.

[0004] 2. Gravure pre-printing: good printing quality, high plate making cost, good printing durability, and solvent ink is selected.

[0005] 3. Flexographic pre-printing: good printing quality, low paperboard cost, moderate printing durability, and environmental paper box water-based ink is selected.

[0006] These three pre-printing methods have their own advantages, but in the long run, flexographic pre-printing has a broader prospect because it not only meets the quality requirements of customers with high-quality products, but also uses non-toxic and harmless paper box water-based ink, which conforms to the environmental trend and is beneficial to the health of consumers and front-line workers.

[0007] Pre-printing is web printing, and then the printed web is used as the outermost layer of paper on the corrugator. The pre-printed outer layer paper and the see pit paper coming out of the corrugator are attached together by the double facer, which is more suitable for large quantities of color printing cartons.

[0008] However, the current double facer has two main paper feeding methods. One is that the printing layer of the pre-printed paper faces down during transmission. At this time, the printing layer is in sliding friction with the hot plate on the lower side of the double facer hot plate channel. Combined with high-speed transmission, the surface temperature of the printing layer is very high, so a high-temperature resistant film needs to be set on the surface of the printing layer of the pre-printed paper, which greatly increases the cost. The high-temperature resistant film will be scratched by sliding friction with the hot plate, causing poor scratching and stringing on the surface of the carton.

[0009] The other is that the printing layer of the pre-printed paper faces up during transmission. The printing layer moves synchronously with the conveyor belt above the hot plate channel, so it is not easy to scratch. However, the derived problem is that the temperature on the upper side of the double facer hot plate channel is not enough, resulting in poor bonding of the pre-printed paper and the see pit paper. In addition, due to the poor air permeability of the conveyor belt, the drying efficiency of the paste and the quality of the paperboard are affected.

[0010] In summary, a double facer that can be used for low-cost water-based pre-printed paper and see pit paper attachment without affecting the attachment and drying efficiency of the two, without scratching the printing layer of the water-based pre-printed paper, and ensuring the quality of the paperboard is needed. SUMMARY

[0011] The present application aims to provide a segmented conveying and heating type double-sided machine with reasonable structure, at least one heating section for bonding face paper and pit paper, at least one section that can be heated and ventilated, so as to improve the bonding speed and quality of face paper (which can be pre-printed paper) and pit paper, and is suitable for the use of low-cost and high-quality flexographic pre-printed paper.

[0012] The purpose of the present application is achieved in this way:

[0013] A segmented conveying and heating type double-sided machine, comprising a front hot plate conveying part and a rear conveying part, characterized in that: a ventilated heating transition section is arranged between the front hot plate conveying part and the rear conveying part, the ventilated heating transition section is provided with a ventilated heating channel, the upper side and / or the lower side of the ventilated heating channel is provided with a heat source, the upper side of the ventilated heating channel is provided with a cylinder for preventing scratching the printing layer of the face paper, the cylinder is provided with a plurality of, and the cylinders form a ventilated gap between them.

[0014] The purpose of the present application can also be solved by using the following technical measures:

[0015] As a more specific solution, the front hot plate conveying part and the rear conveying part are both powered and move synchronously at the same speed.

[0016] As a further solution, the ventilated heating transition section includes a support frame, the ventilated heating channel is arranged on the support frame, and the cylinders are rotatably arranged on the support frame, and each cylinder is arranged transversely.

[0017] As a further solution, the support frame further comprises a movable support member and a lifting driving mechanism, the cylinders are rotatably arranged on the movable support member, the movable support member is movably arranged on the support frame and connected to the support frame through the lifting driving mechanism, the position of the movable support member is adjusted through the lifting driving mechanism, and the distance between the cylinders and the lower side of the ventilated heating channel is adjusted.

[0018] As a further solution, the cylinders are provided with heat sources to form heated cylinders. The heat sources can be temperature-adjustable and switchable, thereby improving the function of the cylinders and adapting to more paperboard processing requirements. The heated cylinders can be steam-heated cylinders, electromagnetic-heated cylinders, etc. The placement density of the heated cylinders is determined according to actual production requirements. In addition, in order to allow the water vapor emitted by the heated paperboard to be quickly removed, the gap between the heated cylinders can be appropriately increased, or an exhaust fan can be added, which is preferably arranged above the heated cylinders, thereby achieving the purpose of rapid drying.

[0019] As a further solution, the lower side of the ventilated heating channel is provided with a heat source, which is a transition section hot plate.

[0020] As a further scheme, the front hot plate conveying part comprises a hot plate part support, a front paper conveying passage is arranged on the hot plate part support, a hot plate part conveying belt and a lower hot plate are arranged on the upper and lower sides of the front paper conveying passage respectively, and the hot plate part conveying belt is provided with a conveying belt heating body at least near the entrance end of the front paper conveying passage.

[0021] As a further scheme, the upper side of the front paper conveying passage is further provided with an upper hot plate, and the upper hot plate is arranged on the side of the hot plate part conveying belt away from the front paper conveying passage.

[0022] As a further scheme, the upper hot plate is connected with the hot plate part support through a pressing plate mechanism, and the pressing plate mechanism is used for adjusting the height position of the upper hot plate. The pressing plate mechanism belongs to the prior art, and its structure will not be described in detail here.

[0023] As a further scheme, the rear conveying part comprises an output section support, an output conveying belt and driven rollers, the output conveying belt and the driven rollers are arranged on the output section support in a vertical mode respectively, a rear paper conveying passage is formed between the output conveying belt and the driven rollers, and the driven rollers are provided in a plurality of roots, the roots of the driven rollers are arranged in a transverse mode and are in rotating fit with the output section support respectively. The driven rollers are in rolling fit with the corrugated paper, so that the friction is reduced.

[0024] The beneficial effects of the present application are as follows:

[0025] (1) The segmented conveying and segmented heating type double-sided machine can have different functions in each conveying section through segmented conveying, for example, rapid double-sided heating is performed in the front part to improve the adhesion speed of the face paper and the flute paper, then the air-permeable heating transition section can perform heating to continue to strengthen the adhesion of the face paper and the flute paper, and at the same time, air permeation is performed to accelerate drying, so that the adhesion paste of the face paper and the flute paper is dried and stabilized, and the paperboard quality and production efficiency are realized without affecting each other.

[0026] (2) The air-permeable heating transition section of the segmented conveying and segmented heating type double-sided machine can perform single-sided heating or double-sided heating, and the height of the roller is adjustable, so as to adapt to the process requirements of various corrugated papers.

[0027] (3) The roller of the air-permeable heating transition section of the segmented conveying and segmented heating type double-sided machine is arranged in a rolling mode, and the surface of the face paper will not be scratched, which is suitable for the use of pre-printed face paper.

[0028] (4) The segmented conveying and segmented heating type double-sided machine is especially suitable for the need of the printing layer of the pre-printed paper facing upward and the adhesion processing of the bottom of the pre-printed paper and the flute paper, and the pre-printed paper can adopt low-cost and high-quality flexographic pre-printed paper. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 Simple structure diagram of an embodiment of the double-sided machine of the present application.

[0030] Figure 2 Simple structure diagram of an embodiment of the double-sided machine of the present application. Figure 1 Enlarged structure diagram of position A in the double-sided machine.

[0031] Figure 3 Principle diagram of heating at the front end of the front paper conveying channel in the double-sided machine of the present application.

[0032] Figure 4 Principle diagram of heating at the air-permeable heating transition section in the double-sided machine of the present application.

[0033] Figure 5 Main structure diagram of the double-sided machine (partially cutaway view of the air-permeable heating transition section) in the double-sided machine of the present application.

[0034] Figure 6 Three-dimensional structure diagram of the double-sided machine in the double-sided machine of the present application.

[0035] Figure 7 Three-dimensional structure diagram of the double-sided machine after being partially cutaway in the double-sided machine of the present application.

[0036] Figure 8 Enlarged structure diagram of position B in the double-sided machine. Figure 7

[0037] Enlarged structure diagram of position C in the double-sided machine. Figure 9 Figure 7 Enlarged structure diagram of position D in the double-sided machine.

[0038] Figure 10 Figure 9 Enlarged structure diagram of position E in the double-sided machine.

[0039] Figure 11 Enlarged structure diagram of position F in the double-sided machine. Figure 10

[0040] In the diagram:

[0041] 10 is the front hot plate conveying part, 101 is the front paper conveying channel, 102 is the hot plate part conveying belt, 103 is the arc-shaped hot plate, 104 is the upper hot plate, 105 is the lower hot plate, 106 is the hot plate part support, 107 is the inlet end, 108 is the preheating arc-shaped plate for paper with pits, and 109 is the pressing plate mechanism.

[0042] 20 is the air-permeable heating transition section, 201 is the air-permeable heating channel, 202 is the transition section hot plate, 203 is the support frame, 204 is the supporting block, 205 is the support beam, 1 is the heating roller, 11 is the air-permeable gap, 2 is the hydraulic cylinder, 21 is the piston rod, 3 is the supporting rod, 31 is the upper inclined surface, 32 is the guide sleeve, 33 is the guide rod, 4 is the support arm, 41 is the mounting disc, 42 is the limiting screw, 43 is the cushion block, 44 is the adjusting screw, 45 is the boss, 46 is the locking screw, and 47 is the elongated hole.​​​

[0043] 30 is a rear conveying part, 301 is a rear paper conveying channel, and 302 is a driven roller;

[0044] 40 is a pit paper;

[0045] 50 is a pre-printed paper, and 501 is a printed layer;

[0046] 100 is a double-sided machine. DETAILED DESCRIPTION

[0047] The present application will be further described below in conjunction with the accompanying drawings and examples.

[0048] Referring to Figure 1 , Figure 2 , Figure 5 , Figure 6 and Figure 7 , a segmented conveying and segmented heating type double-sided machine 100 includes a front hot plate conveying part 10 and a rear conveying part 30, and a breathable heating transition section 20 is arranged between the front hot plate conveying part 10 and the rear conveying part 30. The breathable heating transition section 20 is provided with a breathable heating channel 201, and a heat source is arranged on the upper side and the lower side of the breathable heating channel 201. A cylinder for preventing scratching of the printed layer of the surface paper is arranged on the upper side of the breathable heating channel 201, and the cylinder is provided with a plurality of cylinders. The cylinders and the cylinders form a breathable gap 11. A heat source is arranged on the cylinder to form a heating cylinder 1. The heat source is a steam pipe, and the steam pipe is in communication with the inside of the cylinder. A control valve is connected to the steam pipe, and temperature adjustment is realized by adjusting the control valve. When the control valve is closed, the heating function of the cylinder is turned off.

[0049] The front hot plate conveying part 10 and the rear conveying part 30 are both powered and move synchronously at the same speed.

[0050] Referring to Figures 9 to 11 , the breathable heating transition section 20 includes a support frame 203, and the breathable heating channel 201 is arranged on the support frame 203. The cylinders are rotatably arranged on the support frame 203, and the cylinders are arranged transversely.

[0051] The support frame 203 is also provided with a movable support and a lifting driving mechanism. The cylinders are rotatably arranged on the movable support, and the movable support is movably arranged on the support frame 203 and connected to the support frame 203 through the lifting driving mechanism. The position of the movable support is adjusted through the lifting driving mechanism to adjust the distance between the cylinders and the lower side of the breathable heating channel 201.

[0052] The active support comprises a support beam 205, a support arm 4 and a supporting rod 3, the support beam 205 is arranged on the support frame 203, the support arm 4 is rotationally connected with the support beam 205, the roller is rotationally arranged at the lower end of the support arm 4, the supporting rod 3 is movably arranged on the support frame 203, the lower end of the support arm 4 is supported on the supporting rod 3, and the supporting rod 3 is drivingly connected with the lifting driving mechanism.

[0053] The support frame 203 is provided with a supporting block 204, the top surface of the supporting block 204 is provided with a lower inclined surface, the supporting rod 3 is provided with an upper inclined surface 31, the upper inclined surface 31 is supported on the lower inclined surface of the supporting block 204, and the lifting driving mechanism comprises a hydraulic cylinder 2, the piston rod 21 of the hydraulic cylinder 2 is drivingly connected with the supporting rod 3.

[0054] The supporting rod 3 is provided with an upper and lower pointing guide sleeve 32, the guide sleeve 32 is provided with a guide rod 33, the guide rod 33 is slidingly connected with the guide sleeve 32, and the piston rod 21 of the hydraulic cylinder 2 is connected with the guide rod 33.

[0055] The support arm 4 is in the shape of a curved arm, and the two ends of the heating roller 1 are connected with the support arms 4.

[0056] The lower end of the support arm 4 and the supporting rod 3 are provided with a cushion block 43 assembly.

[0057] The cushion block 43 assembly comprises a cushion block 43, an adjusting screw 44, a locking screw 46 and a mounting disc 41, the mounting disc 41 is arranged at the lower end of the support arm 4, the outer side surface of the mounting disc 41 is provided with a limiting screw 42 and a connecting hole, the cushion block 43 is arranged outside the mounting disc 41, the lower end of the cushion block 43 is supported on the supporting rod 3, the surface of the cushion block 43 is provided with an elongated hole 47, the locking screw 46 is connected with the connecting hole through the elongated hole 47, the cushion block 43 is provided with a screw hole penetrating through the upper and lower sides thereof below the limiting screw 42, the adjusting screw 44 is connected with the screw hole and abuts against the limiting screw 42.

[0058] The surface of the mounting disc 41 is provided with two limiting screws 42 below the horizontal plane where the center line thereof is located, and the connecting hole is arranged below the two limiting screws 42; the front surface of the cushion block 43 is in the shape of an inverted "convex" character, the two ends of the cushion block 43 are respectively provided with the screw holes below the limiting screws 42, the bottom of the cushion block 43 is provided with a boss 45, the bottom surface of the boss 45 is in the shape of a circular arc and is supported on the top surface of the supporting rod 3.

[0059] The lower side of the breathable heating channel 201 is provided with a heat source, and the heat source is a transition section heat plate 202. The transition section heat plate 202 is a steam heating plate or an electromagnetic heating plate.

[0060] In combination Figure 8As shown, the front hot plate conveying part 10 comprises a hot plate part support 106, and a front paper conveying passage 101 is arranged on the hot plate part support 106. The upper and lower sides of the front paper conveying passage 101 are respectively provided with a hot plate part conveying belt 102 and a lower hot plate 105. The hot plate part conveying belt 102 is provided with a conveying belt heating body at least near the entrance end 107 of the front paper conveying passage 101. The hot plate part conveying belt 102 is heated before entering the front paper conveying passage 101, so that the paperboard entering the front paper conveying passage 101 can be heated as soon as possible.

[0061] The conveying belt heating body is an arc-shaped hot plate 103 arranged outside the hot plate part conveying belt 102 and in contact with the surface of the hot plate part conveying belt 102.

[0062] The upper side of the front paper conveying passage 101 is further provided with an upper hot plate 104 arranged on the side of the hot plate part conveying belt 102 away from the front paper conveying passage 101.

[0063] The upper hot plate 104 is connected with the hot plate part support 106 through a pressing plate mechanism 109 for adjusting the height of the upper hot plate 104.

[0064] The hot plate part support 106 is provided with a plurality of roller bodies above the front paper conveying passage 101, one of which is a power roller, and the hot plate part conveying belt 102 is arranged around the roller bodies.

[0065] The hot plate part support 106 is provided with a preheating arc-shaped plate 108 corresponding to the lower side outside the entrance end 107 of the front paper conveying passage 101.

[0066] The rear conveying part 30 comprises an output section support, an output conveying belt and a driven roller 302 arranged on the output section support in an upper and lower manner respectively, and the output conveying belt and the driven roller 302 form a rear paper conveying passage 301 therebetween. The driven roller 302 is provided with a plurality of driven rollers 302 arranged in a transverse manner and respectively rotatably connected with the output section support.

[0067] The working principle is that, taking the bonding of the pre-printed paper 50 and the pre-printed paper 40 as an example, the pre-printed paper 40 is combined with the pre-printed paper 50 in a manner that the pre-printed paper 40 is below and the pre-printed paper 50 is above (the printing layer 501 of the pre-printed paper 50 faces upwardly), and the combination is fed into the front paper conveying passage 101 from the entrance end 107 in the direction of the arrow I. Figure 1 The pre-printed paper 40 is combined with the pre-printed paper 50 in a manner that the pre-printed paper 40 is below and the pre-printed paper 50 is above (the printing layer 501 of the pre-printed paper 50 faces upwardly), and the combination is fed into the front paper conveying passage 101 from the entrance end 107 in the direction of the arrow I. Figure 3As shown, since the arc-shaped hot plate 103 heats the hot plate section conveyor belt 102 near the entrance end 107 (see H1 arrow), it ensures that the hot plate section conveyor belt 102 entering the entrance end 107 can immediately heat the pre-printed paper 50, and in addition, the lower side of the entrance end 107 is provided with a pit paper preheating arc-shaped plate 108, so that the pit paper 40 entering the front paper conveying channel 101 can be preheated; after the pre-printed paper 50 and the pit paper 40 enter the front paper conveying channel 101, their upper and lower sides are respectively heated by the upper hot plate 104 and the lower hot plate 105 (see H3 and H2 arrows), so that the paste between the pre-printed paper 50 and the pit paper 40 is cooked, and the pre-printed paper 50 and the pit paper 40 are preliminarily bonded. Then, combined with Figure 4 As shown, after the pre-printed paper 50 and the pit paper 40 are preliminarily bonded, they enter the air-permeable heating channel 201, and their upper and lower sides are respectively heated by the heating roller 1 and the transition section hot plate 202 (see H5 and H4 arrows), further improving the bonding effect of the pre-printed paper 50 and the pit paper 40, and at the same time, since the heating roller 1 is rolling, it only rolls with the printing layer 501 of the pre-printed paper 50 and does not scratch the printing layer 501, and since the heating roller 1 has gaps between them, it is beneficial for air permeability (see W arrow), improves the drying speed of the cooked paste, and makes the bonding of the pre-printed paper 50 and the pit paper 40 stable, forming corrugated paperboard. Finally, after the corrugated paperboard enters the rear paper conveying channel 301 of the rear conveying section 30, it is sent out to the next station along Figure 1 the middle O arrow.

Claims

1. A sectional transfer and sectional heating double facer comprising a front platen transfer section (10) and a rear transfer section (30), characterized in that: The front hot plate conveying part (10) and the rear conveying part (30) are provided with a breathable heating transition section (20), the breathable heating transition section (20) is provided with a breathable heating channel (201), the upper side and the lower side of the breathable heating channel (201) are provided with heat sources, the upper side of the breathable heating channel (201) is provided with a cylinder for preventing scratching of the printed layer of the face paper, the cylinder is provided with a plurality of cylinders, and the cylinders are arranged in a transverse direction to form a breathable gap (11) between the cylinders. The front hot plate conveying part (10) and the rear conveying part (30) are provided with a breathable heating transition section (20), the breathable heating transition section (20) is provided with a breathable heating channel (201), the upper side and the lower side of the breathable heating channel (201) are provided with heat sources, the upper side of the breathable heating channel (201) is provided with a cylinder for preventing scratching of the printed layer of the face paper, the cylinder is provided with a plurality of cylinders, and the cylinders are arranged in a transverse direction to form a breathable gap (11) between the cylinders. The front hot plate conveying part (10) and the rear conveying part (30) are provided with a breathable heating transition section (20), the breathable heating transition section (20) is provided with a breathable heating channel (201), the upper side and the lower side of the breathable heating channel (201) are provided with heat sources, the upper side of the breathable heating channel (201) is provided with a cylinder for preventing scratching of the printed layer of the face paper, the cylinder is provided with a plurality of cylinders, and the cylinders are arranged in a transverse direction to form a breathable gap (11) between the cylinders. The front hot plate conveying part (10) and the rear conveying part (30) are provided with a breathable heating transition section (20), the breathable heating transition section (20) is provided with a breathable heating channel (201), the upper side and the lower side of the breathable heating channel (201) are provided with heat sources, the upper side of the breathable heating channel (201) is provided with a cylinder for preventing scratching of the printed layer of the face paper, the cylinder is provided with a plurality of cylinders, and the cylinders are arranged in a transverse direction to form a breathable gap (11) between the cylinders. The front hot plate conveying part (10) and the rear conveying part (30) are provided with a breathable heating transition section (20), the breathable heating transition section (20) is provided with a breathable heating channel (201), the upper side and the lower side of the breathable heating channel (201) are provided with heat sources, the upper side of the breathable heating channel (201) is provided with a cylinder for preventing scratching of the printed layer of the face paper, the cylinder is provided with a plurality of cylinders, and the cylinders are arranged in a transverse direction to form a breathable gap (11) between the cylinders. The front hot plate conveying part (10) and the rear conveying part (30) are provided with a breathable heating transition section (20), the breathable heating transition section (20) is provided with a breathable heating channel (201), the upper side and the lower side of the breathable heating channel (201) are provided with heat sources, the upper side of the breathable heating channel (201) is provided with a cylinder for preventing scratching of the printed layer of the face paper, the cylinder is provided with a plurality of cylinders, and the cylinders are arranged in a transverse direction to form a breathable gap (11) between the cylinders. The front hot plate conveying part (10) and the rear conveying part (30) are provided with a breathable heating transition section (20), the breathable heating transition section (20) is provided with a breathable heating channel (201), the upper side and the lower side of the breathable heating channel (201) are provided with heat sources, the upper side of the breathable heating channel (201) is provided with a cylinder for preventing scratching of the printed layer of the face paper, the cylinder is provided with a plurality of cylinders, and the cylinders are arranged in a transverse direction to form a breathable gap (11) between the cylinders.

2. The double-sided machine for the segmented conveying and segmented heating according to claim 1, characterized in that: The front hot plate conveying part (10) and the rear conveying part (30) are provided with a breathable heating transition section (20), the breathable heating transition section (20) is provided with a breathable heating channel (201), the upper side and the lower side of the breathable heating channel (201) are provided with heat sources, the upper side of the breathable heating channel (201) is provided with a cylinder for preventing scratching of the printed layer of the face paper, the cylinder is provided with a plurality of cylinders, and the cylinders are arranged in a transverse direction to form a breathable gap (11) between the cylinders.

3. The double facer of claim 2 wherein: ​ 4. The machine according to claim 1, characterized in that: ​

Images