Decorative paper printing and drying assembly and printing equipment

Abstract

The invention relates to the technical field of printing equipment, and provides a decorative paper printing and drying assembly and printing equipment, the decorative paper printing and drying assembly comprises a drying box body and a conveying part, a drying channel is formed in the drying box body, and the conveying part is arranged in the drying channel and used for conveying decorative paper; an infrared drying component and a hot air drying component are sequentially arranged in the drying channel in the conveying direction, the hot air drying component comprises an upper air supply pipe and a lower air supply pipe, a plurality of air supply holes are formed in the circumferential wall of the upper air supply pipe and the circumferential wall of the lower air supply pipe, and a hot air channel allowing decorative paper to penetrate through is formed between the upper air supply pipe and the lower air supply pipe. According to the decorative paper printing and drying assembly, the drying efficiency of decorative paper can be improved.

Description

Technical Field

[0001] This application relates to the technical field of printing equipment, and particularly to a decorative paper printing and drying assembly and a printing equipment. Background Art

[0002] Decorative paper printing equipment is a special equipment for printing decorative elements such as patterns and colors on decorative paper. Such equipment usually adopts specific printing technologies, such as intaglio printing, to ensure the clarity of patterns and the vividness of colors.

[0003] The main components of decorative paper printing equipment include a conveying part, a printing part, and a drying part. Among them, the drying part is used to dry the printed decorative paper to ensure the printing quality. In the prior art, the method of drying decorative paper is mainly through hot air circulation drying, that is, after the printed decorative paper is conveyed to the drying station, the moisture on the surface of the decorative paper is evaporated under the action of heat transfer by circulating hot air to achieve the drying effect.

[0004] However, such drying methods have problems such as slow drying speed and high energy consumption, and are not suitable for drying a large number of decorative papers, so further improvement is needed. Summary of the Invention

[0005] In order to improve the drying efficiency of decorative paper, this application provides a decorative paper printing and drying assembly and a printing equipment.

[0006] In a first aspect, a decorative paper printing and drying assembly provided by this application adopts the following technical solution: A decorative paper printing and drying assembly includes a drying box body and a conveying member. The drying box body has a drying channel, and the conveying member is arranged in the drying channel for conveying decorative paper; an infrared drying member and a hot air drying member are sequentially arranged in the drying channel along the conveying direction. Among them, the hot air drying member includes an upper air supply pipe and a lower air supply pipe. A plurality of air supply holes are formed in the peripheral walls of the upper air supply pipe and the lower air supply pipe, and a hot air channel for the decorative paper to pass through is formed between the upper air supply pipe and the lower air supply pipe.

[0007] By adopting the above technical solution, an infrared drying component and a hot air drying component are sequentially arranged in the drying channel. After the printed decorative paper is sent into the drying channel, it is infrared-dried by the infrared drying component. The infrared rays can quickly dry the surface of the ink on the decorative paper, achieving the effect of preliminary shaping and reducing the possibility of ink smudging during the subsequent drying process. After the infrared preliminary shaping, as the decorative paper is conveyed, the decorative paper passes through the hot air duct, and hot air drying is carried out by using the upper air supply duct and the lower air supply duct. With the uniform heating of the hot air drying, the moisture and solvents inside the decorative paper and in the deep layer of the ink are fully volatilized, ensuring the uniformity and thoroughness of drying. The combined use of the infrared drying component and the hot air drying component greatly improves the drying efficiency of the decorative paper.

[0008] In a second aspect, a printing device provided by the present application adopts the following technical solution: A printing device includes a device main body and the above-mentioned decorative paper printing and drying assembly. The device main body is connected with a temperature control box body. A temperature control channel is arranged inside the temperature control box body, and the inlet end of the temperature control channel is connected to the outlet end of the drying channel; a heat exchange component for heat exchange with the decorative paper is arranged inside the temperature control channel.

[0009] By adopting the above technical solution, after the decorative paper is dried, due to its high temperature, if it directly enters the subsequent processing link or is stacked and stored, it is likely to deform due to thermal expansion and contraction, affecting the product quality; the dried decorative paper is sent to the temperature control box body, and heat exchange is carried out with the decorative paper through the heat exchange component, reducing the possibility of the decorative paper having too high a temperature, and thus reducing the possibility of the decorative paper deforming.

[0010] Optionally, an installation seat is arranged inside the temperature control box body. The heat exchange component includes a first heat exchange roller, a second heat exchange roller, and a supply component. One end of the first heat exchange roller and one end of the second heat exchange roller are both connected to the installation seat. The first heat exchange roller and the second heat exchange roller are arranged at intervals to form a heat exchange channel for the decorative paper to pass through; heat exchange cavities are opened inside the first heat exchange roller and the second heat exchange roller; the supply component is arranged in the temperature control box body, and the supply component is used to introduce a heat exchange medium into the heat exchange cavities.

[0011] By adopting the above technical solution, after the dried decorative paper is sent into the temperature control channel and enters the heat exchange channel, the supply component introduces a heat exchange medium into the heat exchange cavity of the first heat exchange roller and the heat exchange cavity of the second heat exchange roller to absorb the heat in the decorative paper, so as to facilitate the subsequent processing or stacking and storage of the decoration.

[0012] Optionally, a cavity is formed in the mounting base, and the heat exchange cavities of the first heat exchange roller and the second heat exchange roller are both communicated with the cavity; the supply member includes a first box body and a second box body for storing a heat exchange medium, a first connecting pipe is connected between the first box body and the mounting base, and the outlet end of the first connecting pipe is communicated with the cavity; the first heat exchange roller and the second heat exchange roller are both connected with a second connecting pipe, and the outlet end of the second connecting pipe is communicated with the inside of the second box body; a return pipe is connected between the first box body and the second box body.

[0013] By adopting the above technical solution, the heat exchange medium in the first box body flows into the cavity of the mounting base through the first connecting pipe and then flows into the heat exchange cavity from the cavity to exchange heat with the decorative paper; after heat exchange, it flows into the second box body through the second connecting pipe and is re-circulated back to the first box body through the return pipe to form a circulation loop of the heat exchange medium to continuously exchange heat with the decorative paper.

[0014] Optionally, the height of the first box body is higher than the height of the cavity, and the return pipe is connected with a pumping member.

[0015] Optionally, rotating shafts are provided on the end faces of the first heat exchange roller and the second heat exchange roller close to the mounting base, the rotating shafts are rotatably mounted on the mounting base, and the first heat exchange roller and the second heat exchange roller are both rotatably mounted on the mounting base through their respective rotating shafts; a driving assembly is arranged in the temperature control box body, and the driving assembly is used to drive the first heat exchange roller and the second heat exchange roller to rotate to convey the decorative paper.

[0016] By adopting the above technical solution, the arrangement of the rotating shafts enables the first heat exchange roller and the second heat exchange roller to be rotatably mounted on the mounting base. On the one hand, by driving the first heat exchange roller and the second heat exchange roller to rotate through the driving assembly, the decorative paper can be conveyed forward. On the second hand, driving the first heat exchange roller and the second heat exchange roller to rotate can change the contact positions of different positions on the outer peripheral walls of the first heat exchange roller and the second heat exchange roller with the decorative paper, improving the heat exchange effect.

[0017] Optionally, the driving assembly includes a driving disc, a driving wheel, a driving member and a synchronizing member. The driving disc is coaxially arranged at one end of the first heat exchange roller away from the mounting base; the driving wheel is rotatably mounted on the inner wall of the temperature control box body, an eccentric column is provided on the surface of the driving wheel, a pushing groove for the eccentric column to turn into is formed on the surface of the driving disc, and a plurality of pushing grooves are arranged at intervals around the central axis of the driving disc. Both ends of each pushing groove extend along the radial direction of the driving disc. When the driving wheel rotates, the driving wheel drives the driving disc to rotate intermittently through the eccentric column; the driving member is arranged in the temperature control box body to drive the driving wheel to rotate, and the synchronizing member is used to drive the first heat exchange roller and the second heat exchange roller to rotate synchronously.

[0018] By adopting the above technical solution, when the decorative paper passes through the heat exchange channel, the driving member drives the driving wheel to drive the eccentric column to rotate. When the eccentric column rotates into the pushing groove, the eccentric column pushes the driving disc to rotate through the inner wall of the pushing groove, so as to drive the first heat exchange roller to rotate by a certain angle, and the second heat exchange roller rotates synchronously under the action of the synchronizing member, achieving the effect of conveying the decorative paper. As the driving wheel continues to rotate, when the eccentric column rotates out of the pushing groove, at this time the first heat exchange roller cannot rotate. When the driving wheel rotates continuously, the eccentric column can drive the driving disc to rotate intermittently, that is, drive the first heat exchange roller and the second heat exchange roller to rotate intermittently, so as to convey the decorative board intermittently. During the process that the eccentric column rotates out of the pushing groove and the first heat exchange roller and the second heat exchange roller stop rotating briefly, sufficient contact time is provided between the decorative paper and the first heat exchange roller and between the decorative paper and the second heat exchange roller, thereby improving the heat exchange effect.

[0019] Optionally, the driving wheel is provided with a limiting column, a first limiting arc surface is formed on the outer peripheral wall of the limiting column, a pushing portion is formed between two adjacent pushing grooves, and a second limiting arc surface is provided on the outer peripheral wall of the pushing portion; when the eccentric column rotates out of the pushing groove, the first limiting arc surface abuts against the second limiting arc surface to limit the driving disc from rotating freely; when the eccentric column rotates into the pushing groove, the first limiting arc surface disengages from the second limiting arc surface, and an avoidance notch for avoiding the pushing portion is formed on the outer peripheral wall of the limiting column.

[0020] By adopting the above technical solution, when the eccentric column rotates out of the pushing groove, the first limiting arc surface and the second limiting arc surface abut against each other, so that the limiting column can limit the free rotation of the driving disc, reducing the possibility that the driving disc rotates freely and the eccentric column cannot rotate into the pushing groove again; the avoidance notch is used to avoid the pushing portion, so that when the eccentric column rotates into the pushing groove, it can push the driving disc to rotate, improving the stability of the overall structure.

[0021] Optionally, the driving wheel is provided with a rotating rod, the rotating rod is rotatably connected to the inner wall of the temperature control box body, and the driving wheel is rotatably installed on the temperature control box body through the rotating rod; the eccentric column is eccentrically arranged with respect to the rotating rod, and one end of the eccentric column is rotatably connected to the driving wheel.

[0022] By adopting the above technical solution, the eccentric column is rotatably connected to the driving wheel, so that when the driving wheel drives the eccentric column to rotate into the pushing groove and the eccentric column pushes the driving disc, the eccentric column can rotate around its own central axis, improving the smoothness.

[0023] Optionally, one end of the rotating shaft extends into the cavity, and a communication flow channel communicating with the heat exchange cavity is formed on the outer peripheral wall of the rotating shaft; an opening and closing sleeve is arranged on the inner wall of the cavity, the opening and closing sleeve is sleeved on the outer peripheral wall of the rotating shaft, and a communication hole is formed on the outer peripheral wall of the opening and closing sleeve. A plurality of communication holes are arranged at intervals around the central axis of the opening and closing sleeve; when the eccentric column drives the driving disk to rotate, the inlet end of the communication flow channel communicates with the communication hole; when the eccentric column rotates out of the pushing groove, a dislocation is formed between the inlet end of the communication flow channel and the communication hole.

[0024] By adopting the above technical solution, under normal conditions (when the first heat exchange roller is not rotating), at this time, a dislocation is formed between the inlet end of the communication flow channel and the communication hole, thereby closing the heat exchange cavity, that is, there is no need to introduce the heat exchange medium. When driving the first heat exchange roller and the second heat exchange roller to rotate to convey the decorative paper (that is, when the eccentric column rotates into the pushing groove), as the rotating shaft rotates, the inlet end of the communication flow channel can communicate with the communication hole, so that the heat exchange medium in the cavity can flow into the heat exchange cavity to exchange heat with the decorative paper. With the intermittent rotation of the first heat exchange roller, the inlet end of the communication flow channel can be intermittently opened and closed to intermittently convey the heat exchange medium into the heat exchange cavity, greatly improving the operation convenience of the overall structure.

[0025] In summary, the present application includes at least one of the following beneficial technical effects: 1. Through the setting of the infrared drying component and the hot air drying component, after the printed decorative paper is sent into the drying channel, it is infrared-dried by the infrared drying component. The infrared rays can quickly dry the surface of the decorative paper ink, achieving a preliminary shaping effect and reducing the possibility of ink smudging in the subsequent drying process. After the infrared preliminary shaping, as the decorative paper is conveyed, the decorative paper passes through the hot air duct and is hot air-dried by the upper air supply duct and the lower air supply duct. With the uniform heating of the hot air drying, the moisture and solvents inside the decorative paper and in the deep layer of the ink are fully volatilized, ensuring the uniformity and thoroughness of the drying. The combined use of the infrared drying component and the hot air drying component greatly improves the drying efficiency of the decorative paper; 2. Through the setting of the driving component, when the decorative paper passes through the heat exchange channel, the driving member drives the driving wheel to drive the eccentric column to rotate. When the eccentric column rotates into the pushing groove, the eccentric column pushes the driving disc to rotate through the inner wall of the pushing groove, so as to drive the first heat exchange roller to rotate by a certain angle, and the second heat exchange roller rotates synchronously under the action of the synchronizing member, achieving the effect of conveying the decorative paper. As the driving wheel continues to rotate, when the eccentric column rotates out of the pushing groove, at this time the first heat exchange roller cannot rotate. When the driving wheel rotates continuously, the driving disc can be driven to rotate intermittently through the eccentric column, that is, the first heat exchange roller and the second heat exchange roller are driven to rotate intermittently, so as to convey the decorative board intermittently. During the process that the eccentric column rotates out of the pushing groove and the first heat exchange roller and the second heat exchange roller stop rotating briefly, sufficient contact time is provided between the decorative paper and the first heat exchange roller and between the decorative paper and the second heat exchange roller, thereby improving the heat exchange effect; 3. Through the setting of the opening and closing sleeve, under normal conditions (when the first heat exchange roller does not rotate), at this time, a dislocation is formed between the inlet end of the communication channel and the communication hole, thereby closing the heat exchange cavity, that is, there is no need to introduce the heat exchange medium. When driving the first heat exchange roller and the second heat exchange roller to rotate to convey the decorative paper (that is, when the eccentric column rotates into the pushing groove), as the rotating shaft rotates, the inlet end of the communication channel can communicate with the communication hole, so that the heat exchange medium in the cavity can flow into the heat exchange cavity to exchange heat with the decorative paper. As the first heat exchange roller rotates intermittently, the inlet end of the communication channel can open and close intermittently, so as to convey the heat exchange medium into the heat exchange cavity intermittently, greatly improving the operation convenience of the overall structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is the overall structure sectional view of Embodiment 1; Figure 2 is the structure schematic diagram of the equipment main body in Embodiment 2; Figure 3 is the partial sectional view of the heat exchange component in Embodiment 2; Figure 4 is the partial sectional view of the driving component in Embodiment 3; Figure 5 is the exploded schematic diagram of the limiting column in Embodiment 3; Figure 6 is the partial sectional view of the eccentric column rotating into the pushing groove in Embodiment 3; Figure 7 is the partial sectional view of the eccentric column rotating out of the pushing groove in Embodiment 3; Figure 8 is the partial sectional view of the opening and closing sleeve in Embodiment 3; Figure 9 is the partial sectional view of the opening and closing sleeve shown from another direction in Embodiment 3.

[0027] Description of reference numerals: 1. Drying box body; 11. Drying channel; 12. Upper air supply duct; 121. Air supply hole; 13. Lower air supply duct; 14. Hot air duct; 15. Infrared lamp tube; 16. Hoop; 2. Conveyor; 3. Equipment main body; 4. Temperature control box body; 41. Temperature control channel; 42. Mounting seat; 421. Cavity; 43. Opening and closing sleeve; 431. Communication hole; 5. Heat exchange component; 51. First heat exchange roller; 52. Second heat exchange roller; 53. Heat exchange channel; 54. Heat exchange cavity; 55. First box body; 551. First connecting pipe; 56. Second box body; 561. Second connecting pipe; 57. Rotating shaft; 571. Communication flow channel; 6. Driving component; 61. Driving disc; 611. Pushing groove; 612. Pushing part; 613. Second limiting arc surface; 62. Driving wheel; 621. Eccentric column; 622. Limiting column; 623. First limiting arc surface; 624. Avoiding notch; 625. Rotating rod; 63. First motor; 64. Driving gear; 65. First gear; 66. Second gear; 67. Second motor. Detailed implementation manners

[0028] The following will Figures 1-9 further elaborate on this application in detail.

[0029] Embodiment 1: The embodiment of this application discloses a decorative paper printing and drying component.

[0030] Referring to Figure 1 , a decorative paper printing and drying component includes a drying box body 1 and a conveyor 2. The drying box body 1 is used to be installed at the drying station of the printing equipment. There is a drying channel 11 inside the drying box body 1. The inlet end of the drying channel 11 is used to connect to the printing station of the printing equipment (that is, after the decorative paper is printed, it can be sent into the drying channel 11 for drying operation); the conveyor 2 is arranged in the drying channel 11 to convey the decorative paper. In this embodiment, the conveyor 2 is arranged as a first conveyor belt.

[0031] Referring to Figure 1 , an infrared drying component and a hot air drying component are sequentially arranged in the drying channel 11 along the conveying direction. In this embodiment, the infrared drying component is arranged as an infrared lamp tube 15 (the infrared lamp tube 15 is a prior art, and its structure will not be elaborated too much here). The decorative paper is dried by the infrared lamp tube 15.

[0032] The hot air drying component includes an upper air supply duct 12 and a lower air supply duct 13. The upper air supply duct 12 is located above the first conveyor belt and is provided with a plurality of them at intervals along the conveying direction. The lower air supply duct 13 is located below the first conveyor belt and is provided with a plurality of them at intervals along the conveying direction. The length directions of the upper air supply duct 12 and the lower air supply duct 13 are both perpendicular to the conveying direction of the first conveyor belt. A hot air duct 14 for the decorative paper to pass through is formed between the upper air supply duct 12 and the lower air supply duct 13. A plurality of air supply holes 121 are opened on the peripheral walls of the upper air supply duct 12 and the lower air supply duct 13. The plurality of air supply holes 121 are arranged at intervals along the length direction of the upper air supply duct 12, and each air supply hole 121 faces the hot air duct 14. A plurality of air permeable holes (not shown in the figure) are opened on the surface of the first conveyor belt.

[0033] It should be noted that in this embodiment, both the upper air supply duct 12 and the lower air supply duct 13 are installed on the inner wall of the drying box body 1 in the form of hoop 16. One ends of the upper air supply duct 12 and the lower air supply duct 13 both penetrate through the drying box body 1 and are used to connect a gas supply device (not shown in the figure). The gas supply device conveys hot air to the upper air supply duct 12 and the lower air supply duct 13 to perform drying operation on the decorative paper passing through the hot air duct 14.

[0034] The implementation principle of Embodiment 1 of this application is: by setting an infrared drying component and a hot air drying component, after the decorative paper printed by the printing equipment is sent into the drying channel 11, it is first infrared-dried by the infrared drying component. The infrared rays can quickly dry the surface of the decorative paper ink, achieving a preliminary shaping effect and reducing the possibility of ink smudging and the like in the subsequent drying process.

[0035] After the infrared preliminary shaping, as the decorative paper is conveyed, the decorative paper passes through the hot air duct 14, and hot air drying is carried out by using the upper air supply duct 12 and the lower air supply duct 13. With the uniform heating of the hot air drying, the moisture and solvents inside the decorative paper and in the deep layer of the ink are fully volatilized, ensuring the uniformity and thoroughness of drying. The combined use of the infrared drying component and the hot air drying component greatly improves the drying efficiency of the decorative paper.

[0036] In specific implementation, the infrared drying component and the hot air drying component can be used separately. When drying relatively thick decorative paper, the optimal method is to use both the infrared drying component and the hot air drying component simultaneously to improve the drying effect, greatly improving the flexibility of the overall structure.

[0037] Embodiment 2: Embodiment of this application discloses a printing equipment.

[0038] Refer to Figure 2 、 Figure 3, A printing device, including a device main body 3 and a decorative paper printing and drying component of Embodiment 1. A temperature control box body 4 is installed inside the device main body 3. The temperature control box body 4 is located at the rear end of the drying box body 1. A temperature control channel 41 is provided inside the temperature control box body 4, and the inlet end of the temperature control channel 41 is connected to the outlet end of the drying channel 11.

[0039] A mounting seat 42 is fixedly installed on the inner wall of the temperature control box body 4. A heat exchange component 5 for heat exchange with the decorative paper is provided inside the temperature control channel 41. In this embodiment, the heat exchange component 5 includes a first heat exchange roller 51, a second heat exchange roller 52, and a supply component. One end of the first heat exchange roller 51 close to the mounting seat 42 and one end of the second heat exchange roller 52 close to the mounting seat 42 are both coaxially fixed with a rotating shaft 57. The rotating shaft 57 of the first heat exchange roller 51 and the rotating shaft 57 of the second heat exchange roller 52 are both rotatably installed on the mounting seat 42. The first heat exchange roller 51 and the second heat exchange roller 52 are both rotatably installed on the mounting seat 42 through their respective rotating shafts 57.

[0040] Refer to Figure 3 , The second heat exchange roller 52 is located above the first heat exchange roller 51. The first heat exchange roller 51 and the second heat exchange roller 52 are spaced apart and form a heat exchange channel 53 for the decorative paper to pass through. Heat exchange cavities 54 are respectively provided inside the first heat exchange roller 51 and the second heat exchange roller 52; a cavity 421 is provided inside the mounting seat 42. One end of the rotating shaft 57 extends into the cavity 421, and a communication flow channel 571 communicating with the heat exchange cavity 54 is provided on the outer peripheral wall of the rotating shaft 57. The heat exchange cavities 54 of the first heat exchange roller 51 and the second heat exchange roller 52 are both communicated with the cavity 421 through the communication flow channels 571 of their respective corresponding rotating shafts 57.

[0041] The supply component is arranged in the temperature control box body 4 and is used to introduce a heat exchange medium into the heat exchange cavity 54; the supply component includes a first box body 55 and a second box body 56 for storing the heat exchange medium. The heat exchange medium can be cooling water. The first box body 55 is fixedly installed on the top wall of the temperature control box body 4. A first connecting pipe 551 is connected between the first box body 55 and the mounting seat 42. The inlet end of the first connecting pipe 551 communicates with the inside of the first box body 55, and the outlet end of the first connecting pipe 551 penetrates into the temperature control box body 4 and communicates with the cavity 421 of the mounting seat 42.

[0042] Refer to Figure 3, the second box body 56 is fixedly installed on the inner wall of the temperature control box body 4, and the second box body 56 is located on the side of the heat exchange channel 53 away from the mounting base 42; in this embodiment, both the end faces of the first heat exchange roller 51 and the second heat exchange roller 52 away from the mounting base 42 are fixedly connected with a second connecting pipe 561, and the outlet end of the second connecting pipe 561 penetrates into the second box body 56 and is rotatably connected with the inner wall of the second box body 56. It should be noted that, in order to improve the sealing effect, sealing rings (not shown in the figure) need to be provided at the connection positions between the rotating shaft 57 and the mounting base 42 and between the second connecting pipe 561 and the second box body 56 to reduce the possibility of heat exchange medium leakage.

[0043] In this embodiment, a return pipe (not shown in the figure) is connected between the first box body 55 and the second box body 56. The inlet end of the return pipe communicates with the inside of the second box body 56, and the outlet end of the return pipe penetrates out of the temperature control box body 4 and communicates with the inside of the first box body 55; a pumping member is installed on the return pipe, and the pumping member can be a water pump (not shown in the figure).

[0044] Refer to Figure 3 , a driving assembly 6 is arranged in the temperature control box body 4, and the driving assembly 6 is used to drive the first heat exchange roller 51 and the second heat exchange roller 52 to rotate to convey the decorative paper; in this embodiment, the driving assembly 6 includes a first motor 63, a driving gear 64 and a synchronizing member. The first motor 63 is fixedly installed on the outer side wall of the temperature control box body 4, and the output shaft of the first motor 63 extends into the temperature control box body 4 and is coaxially connected to the driving gear 64; the synchronizing member includes a first gear 65 and a second gear 66. The first gear 65 is coaxially fixed on the outer peripheral wall of the rotating shaft 57 of the first heat exchange roller 51, and the second gear 66 is coaxially fixed on the outer peripheral wall of the rotating shaft 57 of the second heat exchange roller 52. The first gear 65 and the second gear 66, and the first gear 65 and the driving gear 64 are in meshing transmission.

[0045] It should be noted that a second conveyor belt and a third conveyor belt are respectively installed in the temperature control box body 4. One end of the second conveyor belt (not shown in the figure) is used to connect with the first conveyor belt, and the other end is used to connect with the heat exchange channel 53; one end of the third conveyor belt (not shown in the figure) is used to connect with the heat exchange channel 53, and the other end extends away from the heat exchange channel 53 for outward output of the decorative paper; the cooperation among the second conveyor belt, the third conveyor belt, the first heat exchange roller 51 and the second heat exchange roller 52 ensures the continuous conveyance of the decorative paper.

[0046] The implementation principle of Embodiment 2 of this application is as follows: After the decorative paper is dried, since its temperature is relatively high, if it directly enters the subsequent processing link or is stacked and stored, it is likely to deform due to thermal expansion and contraction, affecting the product quality. When the dried decorative paper enters the heat exchange channel 53, the driving component 6 drives the first heat exchange roller 51 and the second heat exchange roller 52 to rotate, and a heat exchange medium is introduced into the heat exchange cavity 54 of the first heat exchange roller 51 and the heat exchange cavity 54 of the second heat exchange roller 52 through the supply component to absorb the heat in the decorative paper, so as to facilitate subsequent processing or stacking and storage of the decoration and ensure the product quality.

[0047] The first heat exchange roller 51 and the second heat exchange roller 52 are rotatably installed on the mounting seat 42. On the one hand, driving the first heat exchange roller 51 and the second heat exchange roller 52 to rotate by the driving component 6 can achieve the effect of forward conveying the decorative paper. On the second hand, driving the first heat exchange roller 51 and the second heat exchange roller 52 to rotate can change the contact of different positions on the outer peripheral walls of the first heat exchange roller 51 and the second heat exchange roller 52 with the decorative paper, improving the heat exchange effect.

[0048] Embodiment 3: This application embodiment discloses a printing device.

[0049] The difference between the printing device disclosed in the embodiment of this application and Embodiment 2 lies in: Referring to Figure 4 、 Figure 5 , in this embodiment, the driving component 6 includes a driving disk 61, a driving wheel 62, a driving member, and a synchronizing member. The driving disk 61 is coaxially fixed to the outer peripheral wall of the second connecting pipe 561 of the first heat exchange roller 51 (that is, the driving disk 61 is coaxially arranged at one end of the first heat exchange roller 51 away from the mounting seat 42); the driving wheel 62 is of a cam structure, the driving wheel 62 is fixedly connected with a rotating rod 625, the rotating rod 625 is rotatably connected to the inner wall of the temperature control box 4, and the driving wheel 62 is rotatably installed on the temperature control box 4 through the rotating rod 625; an eccentric column 621 is arranged on the surface of the driving wheel 62, the eccentric column 621 is eccentrically arranged with respect to the rotating rod 625, and one end of the eccentric column 621 is rotatably connected to the driving wheel 62.

[0050] A pushing groove 611 for the eccentric column 621 to turn into is formed on the surface of the driving disk 61. A plurality of pushing grooves 611 are arranged at intervals around the central axis of the driving disk 61. Both ends of each pushing groove 611 extend along the radial direction of the driving disk 61. When the driving wheel 62 rotates, the driving wheel 62 drives the driving disk 61 to rotate intermittently through the eccentric column 621.

[0051] The driving member is arranged on the temperature control box body 4 for driving the driving wheel 62 to rotate. The driving member is set as the second motor 67. The second motor 67 is fixedly installed on the outer side wall of the temperature control box body 4, and the output shaft of the second motor 67 is coaxially connected to the rotating rod 625. The synchronizing member is used to drive the first heat exchange roller 51 and the second heat exchange roller 52 to rotate synchronously. The synchronizing member in this embodiment has the same structure as that in Embodiment 2, and will not be repeated here. For the specific structure, refer to the synchronizing member structure in Embodiment 2.

[0052] Refer to Figure 5 、 Figure 6 、 Figure 7 , a limiting column 622 is integrally formed on the surface of the driving wheel 62 away from the rotating rod 625. The limiting column 622 is cylindrical. Hereinafter, the outer peripheral wall of the limiting column 622 is defined as the first limiting arc surface 623, and the part between two adjacent pushing grooves 611 is defined as the pushing part 612 of the driving disc 61. The outer peripheral wall of each pushing part 612 has a second limiting arc surface 613; when the eccentric column 621 rotates out of the pushing groove 611, the first limiting arc surface 623 abuts against the second limiting arc surface 613 to limit the driving disc 61 from rotating freely; when the eccentric column 621 rotates into the pushing groove 611, the first limiting arc surface 623 disengages from the second limiting arc surface 613, and an avoidance notch 624 for avoiding the pushing part 612 is formed on the outer peripheral wall of the limiting column 622.

[0053] Refer to Figure 8 、 Figure 9 , in this embodiment, an opening and closing sleeve 43 is fixedly installed on the inner wall of the cavity 421. There are two opening and closing sleeves 43. One of the opening and closing sleeves 43 is sleeved on the outer peripheral wall of the rotating shaft 57 of the first heat exchange roller 51, and the other opening and closing sleeve 43 is sleeved on the outer peripheral wall of the rotating shaft 57 of the second heat exchange roller 52; a communication hole 431 is formed on the outer peripheral wall of the opening and closing sleeve 43, and a plurality of communication holes 431 are arranged at intervals around the central axis of the opening and closing sleeve 43. When the eccentric column 621 drives the driving disc 61 to rotate, the inlet end of the communication flow channel 571 communicates with the communication hole 431; when the eccentric column 621 rotates out of the pushing groove 611, a dislocation is formed between the inlet end of the communication flow channel 571 and the communication hole 431; it can be understood that: when the first heat exchange roller 51 and the second heat exchange roller 52 are in a rotating state, the inlet end of the communication flow channel 571 is in an open state; when the first heat exchange roller 51 and the second heat exchange roller 52 are not in a rotating state, the inlet end of the communication flow channel 571 is in a closed state.

[0054] The implementation principle of Embodiment 3 of this application is as follows: When the decorative paper passes through the heat exchange channel 53, the driving wheel 62 is driven by the driving member to drive the eccentric column 621 to rotate. When the eccentric column 621 rotates into the pushing groove 611, the eccentric column 621 pushes the driving disk 61 to rotate through the inner wall of the pushing groove 611, so as to drive the first heat exchange roller 51 to rotate a certain angle, and the second heat exchange roller 52 rotates synchronously under the action of the synchronizing member, achieving the effect of conveying the decorative paper. As the driving wheel 62 continues to rotate, when the eccentric column 621 rotates out of the pushing groove 611, at this time the first heat exchange roller 51 cannot rotate. When the driving wheel 62 rotates continuously, the driving disk 61 can be driven by the eccentric column 621 to rotate intermittently, that is, drive the first heat exchange roller 51 and the second heat exchange roller 52 to rotate intermittently, so as to convey the decorative board intermittently.

[0055] During the process that the eccentric column 621 rotates out of the pushing groove 611 and the first heat exchange roller 51 and the second heat exchange roller 52 stop rotating briefly, sufficient contact time is provided between the decorative paper and the first heat exchange roller 51, and between the decorative paper and the second heat exchange roller 52, thereby improving the heat exchange effect.

[0056] Under normal conditions (when the first heat exchange roller 51 does not rotate), at this time, a dislocation is formed between the inlet end of the communication flow channel 571 and the communication hole 431, thereby closing the heat exchange cavity 54, that is, there is no need to introduce the heat exchange medium. When driving the first heat exchange roller 51 and the second heat exchange roller 52 to rotate to convey the decorative paper (that is, when the eccentric column 621 rotates into the pushing groove 611), as the rotating shaft 57 rotates, the inlet end of the communication flow channel 571 can communicate with the communication hole 431, so that the heat exchange medium in the cavity 421 can flow into the heat exchange cavity 54 to exchange heat with the decorative paper. As the first heat exchange roller 51 rotates intermittently, the inlet end of the communication flow channel 571 can open and close intermittently, so as to intermittently convey the heat exchange medium into the heat exchange cavity 54, greatly improving the operation convenience of the overall structure.

[0057] The above is the preferred embodiment of this application, and the protection scope of this application is not limited by this. Therefore, all equivalent changes made according to the structure, shape, and principle of this application should be covered within the protection scope of this application.

Claims

1. A decorative paper printing and drying component, characterized in that: It includes a drying box body (1) and a conveying member (2). A drying channel (11) is provided inside the drying box body (1), and the conveying member (2) is arranged in the drying channel (11) for conveying decorative paper. An infrared drying member and a hot air drying member are successively arranged in the drying channel (11) along the conveying direction. Among them, the hot air drying member includes an upper air supply pipe (12) and a lower air supply pipe (13). A plurality of air supply holes (121) are formed in the peripheral walls of the upper air supply pipe (12) and the lower air supply pipe (13), and a hot air channel (14) for the decorative paper to pass through is formed between the upper air supply pipe (12) and the lower air supply pipe (13).

2. A printing device, characterized in that: It includes an equipment main body (3) and a decorative paper printing and drying assembly as described in Claim 1. A temperature control box body (4) is connected to the equipment main body (3). A temperature control channel (41) is provided inside the temperature control box body (4), and the inlet end of the temperature control channel (41) is connected to the outlet end of the drying channel (11). A heat exchange assembly (5) for exchanging heat with the decorative paper is provided in the temperature control channel (41).

3. A printing device according to claim 2, characterized in that: An installation seat (42) is provided inside the temperature control box body (4). The heat exchange assembly (5) includes a first heat exchange roller (51), a second heat exchange roller (52) and a supply member. One end of the first heat exchange roller (51) and one end of the second heat exchange roller (52) are both connected to the installation seat (42). The first heat exchange roller (51) and the second heat exchange roller (52) are arranged at intervals to form a heat exchange channel (53) for the decorative paper to pass through. Heat exchange cavities (54) are formed inside the first heat exchange roller (51) and the second heat exchange roller (52). The supply member is arranged in the temperature control box body (4) and is used to introduce a heat exchange medium into the heat exchange cavities (54).

4. A printing device according to claim 3, characterized in that: A cavity (421) is formed inside the installation seat (42). The heat exchange cavities (54) of the first heat exchange roller (51) and the second heat exchange roller (52) are both communicated with the cavity (421). The supply member includes a first box body (55) and a second box body (56) for storing the heat exchange medium. A first connecting pipe (551) is connected between the first box body (55) and the installation seat (42), and the outlet end of the first connecting pipe (551) is communicated with the cavity (421). The first heat exchange roller (51) and the second heat exchange roller (52) are both connected with a second connecting pipe (561), and the outlet end of the second connecting pipe (561) is communicated with the inside of the second box body (56). A return pipe is connected between the first box body (55) and the second box body (56).

5. A printing device according to claim 4, characterized in that: The height of the first box body (55) is higher than the height of the cavity (421), and the return pipe is connected with a pumping member.

6. A printing device according to claim 4, characterized in that: Both end faces of the first heat exchange roller (51) and the second heat exchange roller (52) close to the mounting seat (42) are provided with rotating shafts (57), and the rotating shafts (57) are rotatably mounted on the mounting seat (42). The first heat exchange roller (51) and the second heat exchange roller (52) are both rotatably mounted on the mounting seat (42) through their respective rotating shafts (57). A driving assembly (6) is arranged in the temperature control box body (4), and the driving assembly (6) is used to drive the first heat exchange roller (51) and the second heat exchange roller (52) to rotate to convey the decorative paper.

7. A printing device according to claim 6, characterized in that: The driving assembly (6) includes a driving disk (61), a driving wheel (62), a driving member and a synchronizing member. The driving disk (61) is coaxially arranged at one end of the first heat exchange roller (51) away from the mounting seat (42). The driving wheel (62) is rotatably mounted on the inner wall of the temperature control box body (4). An eccentric column (621) is arranged on the surface of the driving wheel (62). A pushing groove (611) for the eccentric column (621) to turn into is formed on the surface of the driving disk (61). A plurality of pushing grooves (611) are arranged at intervals around the central axis of the driving disk (61). Both ends of each pushing groove (611) extend along the radial direction of the driving disk (61). When the driving wheel (62) rotates, the driving wheel (62) drives the driving disk (61) to rotate intermittently through the eccentric column (621). The driving member is arranged in the temperature control box body (4) to drive the driving wheel (62) to rotate, and the synchronizing member is used to drive the first heat exchange roller (51) and the second heat exchange roller (52) to rotate synchronously.

8. A printing device according to claim 7, characterized in that: The driving wheel (62) is provided with a limiting column (622). The outer peripheral wall of the limiting column (622) forms a first limiting arc surface (623). A pushing portion (612) is formed between two adjacent pushing grooves (611). The outer peripheral wall of the pushing portion (612) has a second limiting arc surface (613). When the eccentric column (621) turns out of the pushing groove (611), the first limiting arc surface (623) abuts against the second limiting arc surface (613) to limit the driving disk (61) from rotating freely. When the eccentric column (621) turns into the pushing groove (611), the first limiting arc surface (623) disengages from the second limiting arc surface (613), and an avoidance notch (624) for avoiding the pushing portion (612) is formed on the outer peripheral wall of the limiting column (622).

9. A printing device according to claim 7, characterized in that: The driving wheel (62) is provided with a rotating rod (625). The rotating rod (625) is rotatably connected to the inner wall of the temperature control box body (4). The driving wheel (62) is rotatably mounted on the temperature control box body (4) through the rotating rod (625). The eccentric column (621) and the rotating rod (625) are eccentrically arranged, and one end of the eccentric column (621) is rotatably connected to the driving wheel (62).

10. A printing device according to claim 7, characterized in that: One end of the rotating shaft (57) extends into the cavity (421), and a communication flow channel (571) communicating with the heat exchange cavity (54) is formed on the outer peripheral wall of the rotating shaft (57); an opening and closing sleeve (43) is provided on the inner wall of the cavity (421), the opening and closing sleeve (43) is sleeved on the outer peripheral wall of the rotating shaft (57), and a communication hole (431) is formed on the outer peripheral wall of the opening and closing sleeve (43). A plurality of the communication holes (431) are arranged at intervals around the central axis of the opening and closing sleeve (43); when the eccentric column (621) drives the driving disk (61) to rotate, the inlet end of the communication flow channel (571) communicates with the communication hole (431); when the eccentric column (621) rotates out of the pushing groove (611), a dislocation is formed between the inlet end of the communication flow channel (571) and the communication hole (431).

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