Wood grain roll printing device for wood-plastic plate processing

Abstract

The utility model provides a wood grain roll printing device for wood-plastic plate processing, which comprises a base, a horizontal lower printing roller is rotatably mounted on the base, vertical guide rods are symmetrically and fixedly mounted at the top of the base, and a mounting seat is slidably mounted on the two guide rods along the axis direction of the guide rods. And a horizontal upper printing roller is rotationally mounted on the mounting seat and is positioned right above the lower printing roller. Through the design of the width adjusting assembly, when wood-plastic plates with different width sizes are subjected to roller printing of wood grains, the width between the lower guide roller and the upper guide roller can be adjusted through the width adjusting assembly, so that the width between the lower guide roller and the upper guide roller is the same as the width of the wood-plastic plates; and the wood-plastic plate is effectively prevented from being obliquely fed between the lower printing roller and the upper printing roller in the horizontal direction, so that wood grains formed by subsequent roller printing are prevented from being obliquely printed on the surface of the wood-plastic plate, the attractiveness of the wood-plastic plate is improved, and the quality of the wood-plastic plate is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of wood-plastic composite board processing equipment, specifically to a wood grain roller printing device for wood-plastic composite board processing. Background Technology

[0002] Wood-plastic composite board (WPC) is a new type of composite material. It is mainly made by mixing natural plant fibers such as wood chips, straw, and rice husks with polyethylene or similar materials and then extruding them. Because it contains plastic components, it has good elasticity and physical and mechanical properties such as compressive strength and bending strength comparable to wood. It also has high surface hardness and is mainly used in home decoration building materials or the packaging industry. After processing, to improve the appearance of WPC, wood grain roller printing equipment is usually used to roller print paint on the surface of the WPC to form wood grain.

[0003] For example, the accompanying diagram in the instruction manual. Figure 7The image shows a schematic diagram of a wood grain roller printing device for processing wood-plastic composite boards in the prior art. It includes a base, a horizontally oriented lower printing roller rotatably mounted on the base, vertically oriented guide rods symmetrically fixedly mounted on the top of the base, mounting seats slidably mounted on the two guide rods along their axes, and a horizontally oriented upper printing roller rotatably mounted on the mounting seats directly above the lower printing roller. Electric cylinders, each connected to a mounting seat, are symmetrically fixedly mounted on the top of the base. An electric motor for driving the lower printing roller to rotate is fixedly mounted on the base. A support frame is fixedly mounted on the side, and a horizontally oriented lower guide roller is rotatably mounted on the support frame. The top of the lower guide roller is on the same horizontal plane as the top of the lower printing roller. A connecting frame is fixedly mounted on the mounting base above the support frame, and a horizontally oriented upper guide roller is rotatably mounted on the connecting frame directly above the lower guide roller. The bottom of the upper guide roller is on the same horizontal plane as the bottom of the upper printing roller. A liquid storage tank is mounted on the base below the lower printing roller, and a spraying mechanism connected to both the support frame and the connecting frame is mounted on the liquid storage tank. This mechanism is used to spray paint onto the lower and upper printing rollers. When roller-printing paint onto the surface of wood-plastic composite (WPC) to create a wood grain pattern, two electric cylinders move the mounting base along two guide rods according to the WPC thickness. This adjusts the height of the upper printing roller so that the distance between the upper and lower printing rollers matches the WPC thickness. Simultaneously, the height of the upper guide roller is adjusted, adjusting the distance between it and the lower roller so that the end of the WPC passes between them, extending it to the area between the lower and upper printing rollers. During this process, the spraying mechanism is controlled to spray paint onto the lower and upper printing rollers, ensuring the wood grain is evenly distributed. The printing rollers and upper printing rollers are coated with paint. A control motor starts, driving the lower printing roller to rotate upwards along the lower guide roller on the base, causing the wood-plastic composite board to shift between the lower and upper printing rollers. As the lower and upper printing rollers rotate, they contact the surface of the wood-plastic composite board, thus achieving a wood grain effect by roller-printing paint onto the board surface. This existing roller printing device is suitable for wood-plastic composite boards of different thicknesses, and the design of the upper and lower guide rollers facilitates feeding between the lower and upper printing rollers. However, in actual use, the following drawbacks still exist:

[0004] The existing wood grain roller printing equipment lacks a limiting mechanism to limit the width of the wood-plastic composite board on both sides. When roller printing the surface of the wood-plastic composite board, if the width of the wood-plastic composite board is less than the width of the lower printing roller, when feeding the wood-plastic composite board between the lower and upper printing rollers, the wood-plastic composite board is easily fed in a horizontally inclined manner between the lower and upper printing rollers. As a result, when roller printing the wood-plastic composite board, the wood grain pattern formed by roller printing is roller-printed on the surface of the wood-plastic composite board in an inclined manner, reducing the aesthetics of the wood-plastic composite board and thus reducing its quality.

[0005] Therefore, this application proposes a wood grain roller printing device for wood-plastic composite board processing. Utility Model Content

[0006] To address the shortcomings of existing technologies, this utility model provides a wood grain roller printing device for wood-plastic composite board processing, which solves the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A wood grain roller printing device for wood-plastic composite board processing includes a base, a horizontally oriented lower printing roller rotatably mounted on the base, vertically oriented guide rods symmetrically fixedly mounted on the top of the base, mounting seats slidably mounted on the two guide rods along the axis of the guide rods, a horizontally oriented upper printing roller rotatably mounted on the mounting seats and directly above the lower printing roller, electric cylinders symmetrically fixedly mounted on the top of the base and connected to the mounting seats, and an electric motor for driving the lower printing roller to rotate is fixedly mounted on the base.

[0009] A support frame is fixedly installed on the base and on one side of the lower printing roller. A horizontal lower guide roller is rotatably installed on the support frame. The top of the lower guide roller and the top of the lower printing roller are on the same horizontal plane. A connecting frame is fixedly installed on the mounting base and above the support frame. A horizontal upper guide roller is rotatably installed on the connecting frame and directly above the lower guide roller. The bottom of the upper guide roller and the bottom of the upper printing roller are on the same horizontal plane.

[0010] A liquid storage tank is installed on the base and below the lower printing roller. A spraying mechanism connected to both the support frame and the connecting frame is installed on the liquid storage tank. This mechanism is used to spray paint onto the lower and upper printing rollers. A width adjustment component is installed on the support frame and on the side of the lower guide roller away from the lower printing roller. This component is used to adjust the width that can pass through between the lower and upper guide rollers.

[0011] Furthermore: the spraying mechanism includes a liquid pump fixedly installed on one side of the liquid storage tank. The inlet end of the liquid pump is connected to the inside of the liquid storage tank through an inlet pipe. A connecting pipe of the same length as the lower printing roller is fixedly installed on the side of the support frame near the lower printing roller. Multiple nozzles are fixedly installed in a horizontal linear array on the side of the connecting pipe near the lower printing roller. A connecting pipe of the same length as the upper printing roller is fixedly installed on the side of the connecting frame near the upper printing roller. Multiple nozzles are fixedly installed in a horizontal linear array on the side of the connecting pipe near the upper printing roller. A connecting pipe connected to the connecting pipe is fixedly installed on the outlet end of the liquid pump. The connecting pipe is connected to the connecting pipe through a corrugated hose.

[0012] Furthermore: the width adjustment component includes a slide rail fixedly installed on the side of the support frame away from the lower printing roller, two limit blocks are slidably installed on the top of the slide rail in a horizontal direction, and a bidirectional threaded rod is rotatably installed on the slide rail, with the bidirectional threaded rod threadedly connected to both limit blocks.

[0013] Furthermore, each of the two limiting blocks has an installation groove on one side that is close to the other. The bottom wall of the installation groove is located below the lower guide roller. Vertical limiting rollers are symmetrically and rotatably installed on the limiting blocks and within the installation grooves.

[0014] Furthermore: a lower fixing plate is fixedly installed on the support frame and below the connecting pipe one. Spring telescopic rod one is symmetrically fixedly installed on the side of the lower fixing plate away from the support frame. The ends of the two spring telescopic rods one are fixedly installed with lower scrapers that fit against the outer wall of the lower printing roller. An upper fixing plate is fixedly installed on the connecting frame and above the connecting pipe two. Spring telescopic rod two is symmetrically fixedly installed on the side of the upper fixing plate away from the connecting frame. The ends of the two spring telescopic rod two are fixedly installed with upper scrapers that fit against the outer wall of the upper printing roller.

[0015] Furthermore, the top of the upper scraper is provided with a collection groove that is open at the top.

[0016] Furthermore, a connecting hose that communicates with the inside of the collection tank is fixedly installed on the side of the upper scraper away from the upper printing roller, and the other end of the connecting hose is connected to the liquid storage tank.

[0017] This utility model provides a wood grain roller printing device for processing wood-plastic composite boards. Compared with the prior art, it has the following advantages:

[0018] 1. Through the design of the width adjustment component, when printing wood grain on wood-plastic composite boards of different widths, the width between the lower guide roller and the upper guide roller can be adjusted so that the width between the lower guide roller and the upper guide roller is the same as the width of the wood-plastic composite board. This effectively prevents the wood-plastic composite board from being fed horizontally at an angle between the lower and upper printing rollers, thereby preventing the wood grain pattern formed by subsequent roller printing from being printed at an angle on the surface of the wood-plastic composite board, improving the aesthetics of the wood-plastic composite board, and thus improving the quality of the wood-plastic composite board.

[0019] 2. By setting up a lower scraper and an upper scraper, when printing wood grain on wood-plastic composite boards, the upper and lower printing rollers can be rotated to scrape and clean the paint residue on the surface of the upper and lower printing rollers respectively. This effectively avoids the situation where the paint residue on the outer side of the upper and lower printing rollers on the wood-plastic composite boards adheres to the upper and lower printing rollers and dries on the upper and lower printing rollers after long-term use, thus avoiding paint waste.

[0020] 3. By setting spring telescopic rod one and spring telescopic rod two, it is beneficial to make the lower scraper and the upper scraper contact with the lower printing roller and the upper printing roller respectively, thereby facilitating the scraping and cleaning effect on the paint residue on the surface of the upper printing roller and the lower printing roller. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 A three-dimensional structural schematic diagram of the present invention is shown;

[0023] Figure 2 A schematic diagram of the installation structure of the electric motor of this utility model is shown;

[0024] Figure 3 A schematic diagram of the installation structure of the upper scraper of this utility model is shown;

[0025] Figure 4 A schematic diagram of the installation structure of the liquid storage tank of this utility model is shown;

[0026] Figure 5 This utility model illustrates Figure 4 Enlarged view of point A in the middle;

[0027] Figure 6 A schematic diagram of the installation structure of the width adjustment component of this utility model is shown;

[0028] Figure 7 A schematic diagram of a wood grain roller printing device for processing wood-plastic composite boards is shown in the prior art.

[0029] The diagram shows: 1. Base; 11. Lower printing roller; 12. Guide rod; 13. Mounting seat; 14. Upper printing roller; 15. Electric cylinder; 16. Electric motor; 17. Liquid storage tank; 2. Support frame; 21. Lower guide roller; 3. Connecting frame; 31. Upper guide roller; 4. Spraying mechanism; 41. Liquid pump; 42. Connecting pipe one; 43. Nozzle one; 44. Connecting pipe two; 45. Nozzle two; 46. Connecting pipe; 47. Corrugated hose; 5. Width adjustment assembly; 51. Slide rail; 52. Limiting block; 521. Mounting groove; 522. Limiting roller; 53. Bidirectional threaded rod; 6. Lower fixing plate; 61. Spring telescopic rod one; 62. Lower scraper; 7. Upper fixing plate; 71. Spring telescopic rod two; 72. Upper scraper; 721. Collection tank; 8. Connecting hose. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments of this utility model are described clearly and completely. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0031] Example 1

[0032] To address the technical problems in the background art, the following wood grain roller printing device for wood-plastic composite board processing is provided:

[0033] Combination Figures 1-6 As shown, the wood grain roller printing device for wood-plastic composite board processing provided by this utility model includes a base 1, a horizontally oriented lower printing roller 11 rotatably mounted on the base 1, vertically oriented guide rods 12 symmetrically fixedly mounted on the top of the base 1, mounting seats 13 slidably mounted on the two guide rods 12 along the axial direction of the guide rods 12, a horizontally oriented upper printing roller 14 rotatably mounted on the mounting seat 13 and located directly above the lower printing roller 11, electric cylinders 15 symmetrically fixedly mounted on the top of the base 1 and connected to the mounting seats 13, and an electric motor 16 fixedly mounted on the base 1 for driving the lower printing roller 11 to rotate.

[0034] A support frame 2 is fixedly installed on the base 1 and on one side of the lower printing roller 11. A horizontal lower guide roller 21 is rotatably installed on the support frame 2. The top of the lower guide roller 21 is on the same horizontal plane as the top of the lower printing roller 11. A connecting frame 3 is fixedly installed on the mounting base 13 and above the support frame 2. A horizontal upper guide roller 31 is rotatably installed on the connecting frame 3 and directly above the lower guide roller 21. The bottom of the upper guide roller 31 is on the same horizontal plane as the bottom of the upper printing roller 14.

[0035] A liquid storage tank 17 is installed on the base 1 and below the lower printing roller 11. The liquid storage tank 17 stores paint. A spraying mechanism 4, which is connected to both the support frame 2 and the connecting frame 3, is installed on the liquid storage tank 17. It is used to spray paint onto the lower printing roller 11 and the upper printing roller 14. A width adjustment component 5 is installed on the support frame 2 and on the side of the lower guide roller 21 away from the lower printing roller 11. It is used to adjust the width that can pass through between the lower guide roller 21 and the upper guide roller 31.

[0036] When roller-printing paint onto the surface of the wood-plastic composite board to form a wood grain pattern, the mounting base 13 is moved along the two guide rods 12 by two electric cylinders 15 according to the thickness of the wood-plastic composite board. This adjusts the height of the upper printing roller 14 so that the distance between the upper printing roller 14 and the lower printing roller 11 is the same as the thickness of the wood-plastic composite board. During this process, the height of the upper guide roller 31 is simultaneously adjusted by the connecting frame 3, adjusting the distance between the upper guide roller 31 and the lower guide roller 21 so that the end of the wood-plastic composite board passes between the upper guide roller 31 and the lower guide roller 21, extending the end of the wood-plastic composite board to the lower printing roller 11. Between the upper and lower printing rollers 14, the spraying mechanism 4 is controlled to operate, spraying paint onto the lower and upper printing rollers 11 and 14, so that the surfaces of the lower and upper printing rollers 11 and 14 are coated with paint. The motor 16 is then activated, driving the lower printing roller 11 to rotate upwards on the base 1 along the lower guide roller 21 towards the lower printing roller 11. This causes the wood-plastic composite board to shift between the lower and upper printing rollers 11 and 14. As the lower and upper printing rollers 11 and 14 rotate, they contact the surface of the wood-plastic composite board, simultaneously causing the board to shift between them. This allows for roller printing of paint onto the surface of wood-plastic composite boards to create a wood grain effect. The mounting base 13 is slidably mounted on the two guide rods 12 along their axis, allowing for height adjustment of the mounting base 13. This adjusts the distance between the upper printing roller 14 and the lower printing roller 11 to accommodate wood-plastic composite boards of different thicknesses. Furthermore, the design of the upper guide roller 31 and the lower guide roller 21 ensures proper material guidance between the lower printing roller 11 and the upper printing roller 14. The width adjustment component 5 allows for the adjustment of wood-plastic composite boards of different widths. When printing wood grain using rollers, the width adjustment component 5 can be used to adjust the width between the lower guide roller 21 and the upper guide roller 31, so that the width between the lower guide roller 21 and the upper guide roller 31 is the same as the width of the wood-plastic composite board. This effectively prevents the wood-plastic composite board from being fed horizontally between the lower printing roller 11 and the upper printing roller 14 when it is fed between them. This avoids the wood grain pattern formed by subsequent roller printing being printed on the surface of the wood-plastic composite board in an inclined manner, thus improving the aesthetics of the wood-plastic composite board and improving its quality.

[0037] Example 2

[0038] like Figures 1-6 As shown, based on the above embodiments, this embodiment further provides the following:

[0039] In this embodiment, the spraying mechanism 4 includes a liquid pump 41 fixedly installed on one side of the liquid storage tank 17. The inlet end of the liquid pump 41 is connected to the inside of the liquid storage tank 17 through an inlet pipe. A connecting pipe 42 of the same length as the lower printing roller 11 is fixedly installed on the side of the support frame 2 near the lower printing roller 11. Multiple nozzles 43 are fixedly installed in a horizontal linear array on the side of the connecting pipe 42 near the lower printing roller 11. A connecting pipe 44 of the same length as the upper printing roller 14 is fixedly installed on the side of the connecting frame 3 near the upper printing roller 14. The side of the connecting pipe 44 near the upper printing roller 14 is arranged in a horizontal linear array. Multiple nozzles 45 are fixedly installed in a horizontal linear array. A connecting pipe 46 connected to connecting pipe 42 is fixedly installed at the outlet of liquid pump 41. Connecting pipe 44 is connected to connecting pipe 46 through corrugated hose 47. When in use, the liquid pump 41 is turned on to draw the paint out of the storage tank 17 and then transport it to connecting pipe 42 and connecting pipe 44 through connecting pipe 46 and corrugated hose 47. Thus, it can be sprayed out through multiple nozzles 43 and multiple nozzles 45 to achieve the effect of spraying paint on the surface of the lower printing roller 11 and the upper printing roller 14.

[0040] In this embodiment, the width adjustment component 5 includes a slide rail 51 fixedly installed on the side of the support frame 2 away from the lower printing roller 11. Two limiting blocks 52 are slidably installed on the top of the slide rail 51 in a horizontal direction. A bidirectional threaded rod 53 is rotatably installed on the slide rail 51. The bidirectional threaded rod 53 is threadedly connected to the two limiting blocks 52. In use, when the end of the wood-plastic board passes between the upper guide roller 31 and the lower guide roller 21, the wood-plastic board passes between the two limiting blocks 52, so that both sides of the wood-plastic board are in contact with the limiting blocks 52. This achieves the limiting effect of the wood-plastic board, effectively preventing the wood-plastic board from being fed horizontally at an angle between the lower printing roller 11 and the upper printing roller 14. When printing wood grain on wood-plastic boards of different widths, rotating the bidirectional threaded rod 53 can make the two limiting blocks 52 slide in opposite directions on the slide rail 51, moving closer or further apart. This allows the distance between the two limiting blocks 52 to be adjusted so that the distance between the two limiting blocks 52 is the same as the width of the wood-plastic board.

[0041] In this embodiment, each of the two limiting blocks 52 has an installation groove 521 installed on one side close to the other. The bottom wall of the installation groove 521 is located below the lower guide roller 21. Vertical limiting rollers 522 are symmetrically and rotatably installed on the limiting blocks 52 and within the installation grooves 521. By setting the limiting rollers 522, when printing wood grain on wood-plastic composite boards of different widths, the two limiting blocks 52 slide in opposite directions on the slide rail 51, moving closer or further apart. This makes the distance between the limiting rollers 522 on the two limiting blocks 52 the same as the width of the wood-plastic composite board. When feeding the wood-plastic composite board between the lower printing roller 11 and the upper printing roller 14, the limiting rollers 522 rotate on the limiting blocks 52 as the wood-plastic composite board moves between the limiting rollers 522 on the two limiting blocks 52, which facilitates the smooth movement of the wood-plastic composite board between the limiting rollers 522 on the two limiting blocks 52.

[0042] Example 3

[0043] like Figures 1-6 As shown, based on the above embodiments, this embodiment further provides the following:

[0044] In this embodiment, a lower fixing plate 6 is fixedly installed on the support frame 2 below the connecting pipe 42. Spring telescopic rods 61 are symmetrically fixedly installed on the side of the lower fixing plate 6 away from the support frame 2. Lower scrapers 62, which are in contact with the outer wall of the lower printing roller 11, are fixedly installed at the ends of the two spring telescopic rods 61. An upper fixing plate 7 is fixedly installed on the connecting frame 3 above the connecting pipe 44. Spring telescopic rods 71 ​​are symmetrically fixedly installed on the side of the upper fixing plate 7 away from the connecting frame 3. Upper scrapers 72, which are in contact with the outer wall of the upper printing roller 14, are fixedly installed at the ends of the two spring telescopic rods 71. By setting the lower scraper 62 and the upper scraper 72, the wood-plastic composite board is printed with wood... When the upper printing roller 14 and the lower printing roller 11 rotate, the upper scraper 72 and the lower scraper 62 can respectively scrape and clean the paint residue on the surface of the upper printing roller 14 and the lower printing roller 11. This effectively avoids the situation where the paint residue on the outer side of the upper printing roller 14 and the lower printing roller 11 adheres to the upper printing roller 14 and the lower printing roller 11 and dries after long-term use, thus causing paint waste. By setting the spring telescopic rod 1 61 and the spring telescopic rod 2 71, it is beneficial to make the lower scraper 62 and the upper scraper 72 contact with the lower printing roller 11 and the upper printing roller 14 respectively, thereby facilitating the scraping and cleaning effect of the paint residue on the surface of the upper printing roller 14 and the lower printing roller 11.

[0045] In this embodiment, the top of the upper scraper 72 is provided with a collection groove 721 with an open top. It is worth noting that the top of the liquid storage tank 17 is open. By setting the collection groove 721, when the upper scraper 72 and the lower scraper 62 scrape and clean the paint residue on the surface of the upper printing roller 14 and the lower printing roller 11 respectively, the paint cleaned on the surface of the lower printing roller 11 can flow back into the liquid storage tank 17. At this time, when the paint cleaned on the surface of the upper printing roller 14 flows on the upper scraper 72, it can flow into the collection groove 721, thereby facilitating the collection of the paint cleaned on the surface of the upper printing roller 14.

[0046] In this embodiment, a connecting hose 8 that communicates with the inside of the collection tank 721 is fixedly installed on the side of the upper scraper 72 away from the upper printing roller 14. The other end of the connecting hose 8 is connected to the liquid storage tank 17. By setting the connecting hose 8, the paint collected in the collection tank 721 can flow back to the liquid storage tank 17 through the connecting hose 8, which makes it convenient for the paint collected in the collection tank 721 to flow directly back to the liquid storage tank 17 for reuse.

[0047] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0048] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A wood grain roller printing device for processing wood-plastic composite boards, characterized in that: The device includes a base, on which a horizontally oriented lower printing roller is rotatably mounted. Vertically oriented guide rods are symmetrically fixedly mounted on the top of the base. Mounting seats are slidably mounted on the two guide rods along the axis of the guide rods. A horizontally oriented upper printing roller is rotatably mounted on the mounting seats and located directly above the lower printing roller. Electric cylinders connected to the mounting seats are symmetrically fixedly mounted on the top of the base. An electric motor for driving the lower printing roller to rotate is fixedly mounted on the base. A support frame is fixedly installed on the base and on one side of the lower printing roller. A horizontal lower guide roller is rotatably installed on the support frame. The top of the lower guide roller and the top of the lower printing roller are on the same horizontal plane. A connecting frame is fixedly installed on the mounting base and above the support frame. A horizontal upper guide roller is rotatably installed on the connecting frame and directly above the lower guide roller. The bottom of the upper guide roller and the bottom of the upper printing roller are on the same horizontal plane. A liquid storage tank is installed on the base and below the lower printing roller. A spraying mechanism connected to both the support frame and the connecting frame is installed on the liquid storage tank. This mechanism is used to spray paint onto the lower and upper printing rollers. A width adjustment component is installed on the support frame and on the side of the lower guide roller away from the lower printing roller. This component is used to adjust the width that can pass through between the lower and upper guide rollers.

2. The wood grain roller printing device for wood-plastic composite board processing according to claim 1, characterized in that: The spraying mechanism includes a liquid pump fixedly installed on one side of the liquid storage tank. The inlet end of the liquid pump is connected to the inside of the liquid storage tank through an inlet pipe. A connecting pipe of the same length as the lower printing roller is fixedly installed on the side of the support frame near the lower printing roller. Multiple nozzles are fixedly installed in a horizontal linear array on the side of the connecting pipe near the lower printing roller. A connecting pipe of the same length as the upper printing roller is fixedly installed on the side of the connecting frame near the upper printing roller. Multiple nozzles are fixedly installed in a horizontal linear array on the side of the connecting pipe near the upper printing roller. A connecting pipe connected to the connecting pipe is fixedly installed on the outlet end of the liquid pump. The connecting pipe is connected to the connecting pipe through a corrugated hose.

3. The wood grain roller printing device for wood-plastic composite board processing according to claim 2, characterized in that: The width adjustment assembly includes a slide rail fixedly installed on the side of the support frame away from the lower printing roller. Two limit blocks are slidably installed on the top of the slide rail in a horizontal direction. A bidirectional threaded rod is rotatably installed on the slide rail, and the bidirectional threaded rod is threadedly connected to both limit blocks.

4. The wood grain roller printing device for wood-plastic composite board processing according to claim 3, characterized in that: Each of the two limiting blocks has an installation groove on one side that is close to each other. The bottom wall of the installation groove is located below the lower guide roller. Vertical limiting rollers are symmetrically and rotatably installed on the limiting blocks and within the installation grooves.

5. The wood grain roller printing device for wood-plastic composite board processing according to claim 4, characterized in that: A lower fixing plate is fixedly installed on the support frame and below the connecting pipe one. Spring telescopic rod one is symmetrically fixedly installed on the side of the lower fixing plate away from the support frame. The ends of the two spring telescopic rods one are fixedly installed with lower scrapers that fit against the outer wall of the lower printing roller. An upper fixing plate is fixedly installed on the connecting frame and above the connecting pipe two. Spring telescopic rod two is symmetrically fixedly installed on the side of the upper fixing plate away from the connecting frame. The ends of the two spring telescopic rod two are fixedly installed with upper scrapers that fit against the outer wall of the upper printing roller.

6. The wood grain roller printing device for wood-plastic composite board processing according to claim 5, characterized in that: The top of the upper scraper is provided with a collection groove that is open at the top.

7. The wood grain roller printing device for wood-plastic composite board processing according to claim 6, characterized in that: A connecting hose that communicates with the inside of the collection tank is fixedly installed on the side of the upper scraper away from the upper printing roller, and the other end of the connecting hose is connected to the liquid storage tank.

Images