Anilox printing device and production line of PVC composite coiled material
By installing an exhaust hood and exhaust pipe on the screen printing device, combined with a rotary valve regenerator and a baffle curtain, the problem of volatile organic compound (VOC) dispersion was solved, achieving efficient VOC treatment and environmental improvement.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- FOSHAN WEIMING PLASTICS
- Filing Date
- 2025-08-22
- Publication Date
- 2026-07-24
AI Technical Summary
Existing anilox printing equipment fails to effectively handle volatile organic compounds, causing them to disperse in the workshop environment and affecting the production environment.
An exhaust hood is installed on the screen printing device, and an exhaust pipe and a blower are provided. Combined with a rotary valve regenerator, volatile organic compounds are blocked and captured by the first and second air-blocking curtains to ensure that they are effectively discharged to the combustion process.
It effectively reduces the diffusion of volatile organic compounds into the workshop environment, improves the efficiency of volatile organic compound collection and treatment, and improves the production environment.
Smart Images
Figure CN224545556U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of PVC roll production equipment, and more particularly to a screen printing device and a production line for PVC composite rolls. Background Technology
[0002] PVC (polyvinyl chloride) roll materials typically include PVC film, PVC wallpaper, and PVC flooring. Among these, PVC flooring has become a very popular new type of lightweight floor covering material due to its glossy and beautiful appearance, good wear resistance, stain resistance, and slip resistance. To facilitate customers cutting PVC flooring into smaller sizes, existing PVC flooring production lines (such as the PVC composite roll material production equipment disclosed in CN117202072006A) are equipped with screen printing devices.
[0003] The basic components of existing printing pastes used for halftone printing include pigments, resins, solvents, and additives. Many oil-based solvents contain volatile organic compounds (VOCs). During printing, these VOCs evaporate, posing a health hazard. However, existing halftone printing equipment lacks the capability to handle VOCs and does not have protective structures, allowing them to easily disperse into the workshop environment and deteriorate the production environment.
[0004] It is evident that existing technologies still need improvement and enhancement. Utility Model Content
[0005] The purpose of this invention is to provide a screen printing device and a production line for PVC composite rolls, aiming to solve the problems that existing screen printing devices do not have the function of handling volatile organic compounds and do not have a protective structure.
[0006] To achieve the above objectives, the solution provided by this utility model is as follows:
[0007] The first aspect of this utility model provides a screen printing apparatus, including a frame and a screen printing assembly mounted on the frame; the screen printing assembly includes a pressure roller and a screen roller that are parallel to each other; it also includes an exhaust hood fixed above the frame, two sets of parallel first air-blocking curtains, two sets of parallel second air-blocking curtains, and an exhaust pipe connected to the exhaust hood; the frame is surrounded by the first air-blocking curtains and the second air-blocking curtains.
[0008] Both sets of the first air-blocking curtains are hung at the bottom of the exhaust hood in a direction parallel to the axis of the anilox roller;
[0009] Both sets of the second air-blocking curtains are hung below the exhaust hood; the axial direction of the anilox roller is perpendicular to the vertical surface of the second air-blocking curtain; the exhaust pipe is connected to an exhaust fan, and the exhaust fan is connected to a rotary valve type regenerator.
[0010] Optionally, a rectangular frame is fixedly provided on the top of the frame, with both sides of the rectangular frame in the width direction located on the outside of the frame; the exhaust hood is fixedly provided on the rectangular frame.
[0011] Optionally, each group of the first air-blocking curtain includes multiple air curtain strips, which are hung side by side at the bottom of the extraction hood in a direction parallel to the axis of the anilox roller.
[0012] Optionally, the length of the air curtain strip in the vertical direction is less than the length of the second air barrier strip in the vertical direction.
[0013] Optionally, a hanging rod is fixed to the bottom of the second air-blocking curtain, and a support plate is fixed to the upper part of the frame. The support plate has an arc-shaped groove, and two parallel support plates form a set to support the hanging rod.
[0014] Optionally, the exhaust hood is a trapezoidal shape that is narrower at the top and wider at the bottom, and a strip-shaped air outlet is provided at the top of the exhaust hood; the length direction of the strip-shaped air outlet is parallel to the axial direction of the anilox roller; an exhaust pipe is provided on the strip-shaped air outlet; the exhaust pipe and the exhaust pipe are connected.
[0015] Optionally, the screen printing device further includes a support steel frame vertically fixed to the ground; the support steel frame is provided with a support beam, and a limiting clamp for the passage of the exhaust pipe is fixed on the support beam.
[0016] Optionally, both the first and second air-blocking curtains are transparent air curtains.
[0017] The second aspect of this utility model also provides a production line for PVC composite rolls, including the screen printing device described above.
[0018] Beneficial effects:
[0019] The first aspect of this invention provides a screen printing device. By installing an extraction hood above the machine frame and using an exhaust pipe, volatile organic compounds (VOCs) generated during the screen printing process can be discharged through the exhaust pipe to a rotary valve regenerative furnace for combustion under the action of the exhaust fan. This reduces the dispersion of VOCs into the workshop environment, thereby improving the production environment. Simultaneously, without affecting the production and conveying of PVC flooring, the first and second air-blocking curtains of this invention work together to provide a certain degree of shielding around the machine frame. This reduces the irregular diffusion of VOCs into the workshop environment before they are extracted by the extraction hood, allowing more VOCs to be successfully captured by the extraction hood and transported through the exhaust pipe to the rotary valve regenerative furnace for processing. This further improves the efficiency of VOC collection and treatment, and better prevents VOC pollution of the workshop environment.
[0020] The second aspect of this utility model also provides a production line for PVC composite rolls. Compared with existing PVC composite roll production lines, this production line can effectively reduce volatile organic compound pollution and improve the production environment while realizing the production of PVC composite rolls. 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 the structures shown in these drawings without creative effort.
[0022] Figure 1 Schematic diagram of the structure of the halftone printing device provided by this utility model Figure 1 .
[0023] Figure 2 yes Figure 1 Enlarged view of section A.
[0024] Figure 3 yes Figure 1 Enlarged view of section B.
[0025] Figure 4 Schematic diagram of the structure of the halftone printing device provided by this utility model Figure 2 .
[0026] Figure 5 yes Figure 4 Enlarged view of section C.
[0027] Figure 6 This is a schematic diagram of the structure of the halftone printing device provided by this utility model. Figure 3 .
[0028] Figure 7 A schematic diagram of the production line for the PVC composite roll material provided by this utility model.
[0029] Figure 8 This is a schematic diagram of the structure of the halftone printing device provided by this utility model. Figure 4 .
[0030] Explanation of icon numbers:
[0031] 1-Rack;
[0032] 2-Anilox printing assembly; 201-Pressure roller; 202-Anilox roller; 203-Paste tank;
[0033] 3-Exhaust hood; 301-Strip-shaped exhaust port;
[0034] 4-First air barrier curtain; 41-Air curtain strip;
[0035] 5-Second air choke curtain; 6-Exhaust pipe; 7-Rectangular frame; 8-Hanging rod;
[0036] 9-Support plate; 91-Arc-shaped bracket;
[0037] 10-Exhaust pipe; 11-Supporting steel frame; 12-Supporting beam; 13-Limiting clamp; 14-Cooling assembly; 15-Fixed width slitting assembly; 16-PVC floor. Detailed Implementation
[0038] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0039] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in the embodiments of this utility model are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.
[0040] It should also be noted that when a component is described as "fixed to" or "set on" another component, it can be directly on the other component or there may be an intervening component present. When a component is described as "connected to" another component, it can be directly connected to the other component or there may be an intervening component present.
[0041] Furthermore, the use of terms such as "first" and "second" in this utility model is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.
[0042] Please see Figures 1 to 7The first aspect of this utility model provides a screen printing device, which is a component of a PVC composite roll production line for producing PVC flooring 16. It can be arranged between the cooling component 14 and the width-fixing slitting component 15 of an existing PVC composite roll production line.
[0043] Specifically, the anilox printing device includes a frame 1, an anilox printing assembly 2, an extraction hood 3, a first air-blocking curtain 4, a second air-blocking curtain 5, and an exhaust pipe 6 connected to the extraction hood 3. The anilox printing assembly 2 includes a paste tank 203, a pressure roller 201, and an anilox roller 202. The anilox printing assembly 2 can print an anilox pattern on the back of a bonded and cooled PVC flooring sheet using the anilox printing assembly 2. The structure of the anilox printing assembly 2 of this utility model is an existing structure, and its operation can be found in the PVC composite roll production device disclosed in CN117227206A.
[0044] Furthermore, the extraction hood 3 is fixedly installed above the frame 1; two sets of the first air-blocking curtain 4 and the second air-blocking curtain 5 are provided, wherein both sets of the first air-blocking curtain 4 are hung at the bottom of the extraction hood 3 in a direction parallel to the axial direction of the anilox roller 202, and both sets of the second air-blocking curtain 5 are along the production direction of the PVC flooring. Figure 1 and Figure 4 The direction indicated by the middle arrow (that is, the direction perpendicular to the axis of the anilox roller 202) is hung below the exhaust hood 3, so that the frame 1 can be surrounded by the first air-blocking curtain 4 and the second air-blocking curtain 5; the exhaust pipe 6 is connected to the exhaust hood 3, and the exhaust pipe 6 is connected to an exhaust fan, which is connected to a rotary valve type regenerator.
[0045] This invention, by installing an extraction hood 3 above the frame 1 and using an exhaust pipe 6, allows volatile organic compounds (VOCs) generated during the printing process to be discharged into a rotary valve regenerative furnace for combustion under the action of a fan. This reduces the dispersion of VOCs into the workshop environment, thereby improving the production environment. Simultaneously, without affecting the production and conveying of PVC flooring, the first and second air-blocking curtains 4 and 5 work together to provide a certain degree of shielding around the frame 1, reducing the irregular diffusion of VOCs into the workshop environment before they are extracted by the extraction hood 3. This allows more VOCs to be captured by the extraction hood 3 and transported to the rotary valve regenerative furnace for treatment via the exhaust pipe 6, further improving the efficiency of VOC collection and treatment and better preventing pollution of the workshop environment.
[0046] like Figure 1 , Figure 4 as well as Figure 6As shown, in an optional embodiment, a rectangular frame 7 is fixedly mounted on the top of the frame 1. Both sides of the rectangular frame 7 in the width direction are located outside the frame 1, and this width direction is parallel to the axial direction of the anilox roller 202 and the pressure roller 201. The extraction hood 3 is fixedly mounted on the rectangular frame 7. In this embodiment, the fact that both sides of the rectangular frame 7 in the width direction are located outside the frame 1 expands the mounting base of the extraction hood 3, allowing it to cover a wider area and more comprehensively correspond to the working range of the anilox printing assembly 2, thus improving the capture effect of volatile organic compounds.
[0047] Specifically, the rectangular frame 7 can be fixed to the top of the frame 1 by welding.
[0048] like Figure 1 and Figure 4 As shown, in an optional embodiment, each group of the first air-blocking curtain 4 includes multiple air curtain strips 41 of the same specification. The air curtain strips 41 are hung side by side at the bottom of the exhaust hood 3 in a direction parallel to the axial direction of the anilox roller 202. The first air-blocking curtain 4 is composed of multiple air curtain strips 41. In this way, in the early stage of production, the air curtain strips 41 near the rectangular frame 7 can be erected on the rectangular frame 7, providing operating space for production personnel to thread the PVC flooring to the downstream fixed-width cutting assembly 15, facilitating the threading operation.
[0049] like Figure 1 and Figure 4 As shown, in an optional embodiment, the vertical length of the air curtain strip 41 is less than the vertical length of the second air barrier strip 5. The shorter vertical length of the air curtain strip 41 ensures the basic shielding effect of the first air barrier strip 4 along the axial direction of the anilox roller 202 against volatile organic compounds, while also preventing obstruction of the normal transport of the PVC flooring on the production line due to its shorter length. The longer length of the second air barrier strip 5, however, allows for more effective shielding along the PVC flooring production direction, reducing the diffusion of volatile organic compounds in that direction.
[0050] like Figures 1 to 3 ,as well as Figure 6As shown, in an optional embodiment, a hanging rod 8 is fixed to the bottom of the second air barrier curtain 5, and a support plate 9 is fixed to the upper part of the frame 1. The support plate 9 has an arc-shaped groove 91, and two parallel support plates 9 form a group to support the hanging rod 8. When printing paste needs to be added to the anilox printing assembly 2 (paste tank 203), the hanging rod 8 at the bottom of the second air barrier curtain 5 can be placed in the arc-shaped groove 91 of the support plate 9 on the upper part of the frame 1, so that the lower part of the second air barrier curtain 5 is raised and stably supported, providing sufficient space for the paste addition operation and facilitating the operation of production personnel. After the operation is completed, the hanging rod 8 is removed from the arc-shaped groove 91, and the second air barrier curtain 5 can naturally hang down to restore the blocking state. This can effectively reduce the diffusion of volatile organic compounds along the PVC floor production direction when not in operation, and can also be flexibly adjusted when adding paste to ensure operational convenience.
[0051] Understandably, support plates 9 are installed on both sides of the frame 1 opposite to the two second air curtains 5.
[0052] Specifically, the upper parts of the second air barrier curtain 5 and the aforementioned air curtain strip 41 can both be fixed with screws.
[0053] In an optional embodiment, the exhaust hood 3 is a trapezoid with a narrow top and a wide bottom, and a strip-shaped air outlet 301 is provided at the top of the exhaust hood 3; the length direction of the strip-shaped air outlet 301 is parallel to the axial direction of the anilox roller 202; an exhaust pipe 10 is provided on the strip-shaped air outlet 301; the exhaust pipe 10 is connected to the exhaust pipe 6.
[0054] The exhaust hood 3 is designed as a trapezoid with a narrow top and a wide bottom. Its large bottom opening can more comprehensively cover the working area of the anilox printing assembly 2, enhancing the capture range of volatile organic compounds. The strip-shaped exhaust port 301 at the top is parallel to the axial direction of the anilox roller 202, which can be adapted to the diffusion direction of volatile organic compounds during the anilox printing process. In conjunction with the exhaust pipe 10 and the exhaust pipe 6, the collected exhaust gas can enter the exhaust pipe 6 more concentratedly and smoothly, reducing resistance and retention during the transportation process, improving the efficiency of exhaust gas transportation, ensuring that more volatile organic compounds can be effectively guided to the subsequent treatment equipment, further reducing their dispersion into the workshop environment, and improving the production environment.
[0055] like Figure 1 and Figure 4As shown, in an optional embodiment, the anilox printing device further includes a vertically fixed support steel frame 11; the support steel frame 11 is provided with a support beam 12, and a limiting clamp 13 for the exhaust pipe 6 to pass through is fixed on the support beam 12. In this embodiment, the support steel frame 11 is vertically fixed to the ground, and the limiting clamp 13 on its support beam 12 allows the exhaust pipe 6 to pass through. This design can provide stable support and limiting for the exhaust pipe 6, preventing the exhaust pipe 6 from shaking, displacing, or even falling off due to its own weight or airflow impact during the transportation of waste gas containing volatile organic compounds, ensuring the stability of the waste gas transportation path; at the same time, through the cooperation of the support steel frame 11 and the limiting clamp 13, the exhaust pipe 6 can be reliably guided and fixed, ensuring that the waste gas containing volatile organic compounds can be smoothly and stably transported to the rotary valve regenerative furnace outside the workshop for treatment.
[0056] For example, the bottom of the supporting steel frame 11 can be fixed to the ground with anchor bolts.
[0057] like Figure 1 and Figure 8 As shown, in an optional embodiment, both the first air barrier curtain 4 and the second air barrier curtain 5 are transparent air curtains. The use of transparent air curtains for the first air barrier curtain 4 and the second air barrier curtain 5 not only serves to reduce the leakage of volatile organic compounds (VOCs) and, in conjunction with structures such as the exhaust hood 3 and the exhaust pipe 6, improves the collection and treatment effect of VOCs, but also allows production personnel to clearly observe the working status of the anilox printing component 2 and the production and conveying of the PVC flooring. This facilitates timely detection and handling of problems that arise during production, such as determining whether printing paste needs to be added to the paste tank 203.
[0058] A second aspect of this invention also provides a production line for PVC composite rolls, which can be used to produce PVC flooring 16 and includes the aforementioned screen printing device. Compared with existing PVC composite roll production lines, this production line can effectively reduce volatile organic compound pollution and improve the production environment while producing PVC composite rolls.
[0059] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.
Claims
1. An anilox printing apparatus, comprising a frame (1) and an anilox printing assembly (2) disposed on the frame (1); the anilox printing assembly (2) comprising a pressure roller (201) and an anilox roller (202) parallel to each other; characterized in that, It also includes an exhaust hood (3) fixed above the frame (1), two sets of parallel first air-blocking curtains (4), two sets of parallel second air-blocking curtains (5), and an exhaust pipe (6) connected to the exhaust hood (3); the frame (1) is surrounded by the first air-blocking curtains (4) and the second air-blocking curtains (5). Both sets of the first air-blocking curtains (4) are hung at the bottom of the air extraction hood (3) in a direction parallel to the axis of the anilox roller (202); Both sets of the second air-blocking curtains (5) are hung below the exhaust hood (3); the axial direction of the anilox roller (202) is perpendicular to the vertical surface of the second air-blocking curtain (5); the exhaust pipe (6) is connected to an exhaust fan, and the exhaust fan is connected to a rotary valve type regenerator.
2. The halftone printing apparatus according to claim 1, characterized in that, A rectangular frame (7) is fixedly provided on the top of the frame (1), and both sides of the rectangular frame (7) in the width direction are located on the outside of the frame (1); the exhaust hood (3) is fixedly provided on the rectangular frame (7).
3. The halftone printing apparatus according to claim 2, characterized in that, Each first air-blocking curtain (4) includes multiple air curtain strips (41), which are hung side by side at the bottom of the air extraction hood (3) in a direction parallel to the axial direction of the anilox roller (202).
4. The halftone printing apparatus according to claim 3, characterized in that, The vertical length of the air curtain strip (41) is less than the vertical length of the second air curtain (5).
5. The halftone printing apparatus according to claim 4, characterized in that, The bottom of the second air-blocking curtain (5) is fixed with a hanging rod (8), and the upper part of the frame (1) is fixed with a support plate (9). The support plate (9) has an arc-shaped groove (91) and two parallel support plates (9) are a group for supporting the hanging rod (8).
6. The halftone printing apparatus according to claim 1 or 2, characterized in that, The exhaust hood (3) is a trapezoid with a narrow top and a wide bottom, and a strip-shaped air outlet (301) is provided at the top of the exhaust hood (3); the length direction of the strip-shaped air outlet (301) is parallel to the axial direction of the anilox roller (202); an exhaust pipe (10) is provided on the strip-shaped air outlet (301); the exhaust pipe (10) is connected to the exhaust pipe (6).
7. The halftone printing apparatus according to claim 1, characterized in that, It also includes a support steel frame (11) that is vertically fixed to the ground; the support steel frame (11) is provided with a support beam (12), and the support beam (12) is fixed with a limiting hoop (13) through which the supply and exhaust pipe (6) passes.
8. The halftone printing apparatus according to claim 1, characterized in that, Both the first air barrier curtain (4) and the second air barrier curtain (5) are transparent air barriers.
9. A production line for PVC composite rolls, characterized in that, Includes the halftone printing apparatus according to any one of claims 1 to 8.