A printing device for plastic packaging bag production

Abstract

The utility model relates to the field of plastic packaging bag production discloses a printing device for plastic packaging bag production, including support base, support base upper end is equipped with printing machine box, and the both ends of printing machine box are equipped with feeding end and discharge end respectively, and the both ends of support base are equipped with feeding roller and material receiving roller respectively, and the fixed connection with the guide frame board of feeding end one side of printing machine box is located, and both sides of guide frame board are equipped with fixed frame, and the rotatory connection with guide roller is equipped on fixed frame, and the removable cleaning cover is equipped with the outer cover of guide frame board, and the both sides of cleaning cover are equipped with feeding port and discharge port respectively, and the fixed connection with movable sleeve is equipped on the upper end of cleaning cover, and the clean block above the guide frame board is inserted in the movable sleeve and slides, and the fixed connection with cleaning brush is equipped on the bottom surface of clean block, and the fixed connection with spring that cooperates with clean block is equipped in movable sleeve. The utility model has the advantages of comparing prior art in that can carry out cleaning treatment before printing, avoid raw material to contaminate dust and influence printing effect.

Description

Technical Field

[0001] This utility model relates to the field of plastic packaging bag production technology, specifically to a printing device for the production of plastic packaging bags. Background Technology

[0002] In the production of plastic packaging bags, the printing process is a crucial step affecting the product's appearance and quality. In existing technologies, plastic film is typically guided and transported by guide rollers before entering the printing press. However, due to impurities such as dust and fibers present in the production environment, dust or foreign matter easily adheres to the film surface. If it is not effectively cleaned, direct printing will result in problems such as blurry printed patterns, uneven colors, and poor adhesion, severely impacting the quality and aesthetics of the finished product. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the above-mentioned technical difficulties and provide a printing device for the production of plastic packaging bags, which can perform cleaning treatment before printing to avoid the raw materials being contaminated with dust and affecting the printing effect.

[0004] To solve the above-mentioned technical problems, the technical solution provided by this utility model is as follows: a printing device for the production of plastic packaging bags, including a support base, a printing machine box at the upper end of the support base, a feeding end and a discharging end at both ends of the printing machine box, a feeding roller and a receiving roller at both ends of the support base, a guide frame plate fixedly connected to the printing machine box on the feeding end side, fixed frames on both sides of the guide frame plate, guide rollers rotatably connected to the fixed frames, a detachable cleaning cover covering the guide frame plate, a feeding port and a discharging port on both sides of the cleaning cover, dust exhaust fans installed on both sides of the cleaning cover, a movable sleeve fixedly connected to the upper end of the cleaning cover, a cleaning block slidably inserted into the movable sleeve above the guide frame plate, a cleaning brush fixedly connected to the bottom surface of the cleaning block, and a spring cooperating with the cleaning block fixedly connected inside the movable sleeve.

[0005] As an improvement, the support base is fixedly connected with fixed inserts arranged on both sides, and the bottom surface of the cleaning cover is provided with fixed slots that cooperate with the fixed inserts on both sides. A fixing mechanism is provided between the cleaning cover and the fixed inserts.

[0006] As an improvement, the fixing mechanism includes fixing bolts threaded to both sides of the cleaning cover and extending into the fixing slot, and fixing bolt holes that mate with the fixing bolts are provided on the fixing plate.

[0007] As an improvement, a dust cover is fixedly connected to one end of the discharge port of the cleaning cover, and the other end of the dust cover is fixedly connected to the feed end of the printing machine box.

[0008] As an improvement, a cleaning felt is fixedly connected to the upper end of the guide plate.

[0009] The advantages of this invention compared to existing technologies are as follows: By setting a detachable cleaning cover, cleaning brushes and cleaning felt are arranged above and below the film material respectively, allowing for simultaneous brushing and cleaning of both the upper and lower surfaces of the film material. This effectively removes dust and foreign matter adhering to the surface, ensuring the cleanliness of the material before printing. Dust exhaust fans installed on both sides of the cleaning cover can promptly suck in and expel dust generated during the cleaning process, preventing dust accumulation inside the cover and causing secondary pollution. The dust cover connected to the discharge port further isolates the cleaning area from the printing press inlet, effectively preventing environmental dust from re-contaminating the surface before the material enters the printing press. Attached Figure Description

[0010] Figure 1 This is an exploded view of a printing device for the production of plastic packaging bags according to this utility model.

[0011] Figure 2 This is a schematic diagram of a printing device for the production of plastic packaging bags according to this utility model.

[0012] Figure 3 This is a cross-sectional view of a printing device for producing plastic packaging bags according to this utility model.

[0013] Figure 4 This is a schematic diagram of the cleaning cover structure of a printing device for the production of plastic packaging bags according to this utility model.

[0014] As shown in the figure: 1. Support base; 2. Printing machine housing; 3. Feeding roller; 4. Receiving roller; 5. Guide frame plate; 6. Fixing frame; 7. Guide roller; 8. Cleaning felt; 9. Cleaning cover; 10. Dust exhaust fan; 11. Cleaning block; 12. Fixing screw hole; 13. Spring; 14. Movable sleeve; 15. Cleaning brush; 16. Feed inlet; 17. Discharge outlet; 18. Dust cover; 19. Fixing slot; 20. Fixing insert plate; 21. Fixing bolt. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0016] like Figures 1 to 4As shown, a printing device for producing plastic packaging bags includes a support base 1, a printing machine housing 2 at the upper end of the support base 1, a feeding end and a discharging end at the two ends of the printing machine housing 2, a feeding roller 3 and a receiving roller 4 at the two ends of the support base 1, a guide frame plate 5 fixedly connected to the side of the printing machine housing 2 at the feeding end, a cleaning felt 8 fixedly connected to the upper end of the guide frame plate 5, a fixing frame 6 on both sides of the guide frame plate 5, a guide roller 7 rotatably connected to each fixing frame 6, a detachable cleaning cover 9 covering the guide frame plate 5, fixing plates 20 arranged on both sides of the support base 1, fixing slots 19 on both sides of the bottom surface of the cleaning cover 9 that cooperate with the fixing plates 20, a fixing mechanism between the cleaning cover 9 and the fixing plates 20, the fixing mechanism including fixing bolts 21 threadedly connected to both sides of the cleaning cover 9 and extending into the fixing slots 19, and fixing screw holes 12 on each fixing plate 20 that cooperate with the fixing bolts 21.

[0017] The cleaning cover 9 has an inlet 16 and an outlet 17 on both sides. Dust exhaust fans 10 are installed on both sides of the cleaning cover 9. A movable sleeve 14 is fixedly connected to the upper end of the cleaning cover 9. A cleaning block 11 located above the guide plate 5 is slidably inserted into the movable sleeve 14. A cleaning brush 15 is fixedly connected to the bottom surface of the cleaning block 11. A spring 13 that cooperates with the cleaning block 11 is fixedly connected to the movable sleeve 14. A dust cover 18 is fixedly connected to one end of the outlet 17 of the cleaning cover 9. The other end of the dust cover 18 is fixedly connected to the inlet end of the printing machine box 2.

[0018] In practical use, the operator first correctly installs the feed roller 3, which is wrapped with plastic film, at the corresponding position at one end of the support base 1. Then, the operator manually pulls the free end of the film, so that it passes over the feed roller 7 on the feed side (i.e., the side away from the printing press 2) of the guide frame plate 5 from above, and then goes down and around to the top of the guide frame plate 5, so that the bottom surface of the film is laid flat and adhered to the cleaning felt 8 fixed at the upper end of the guide frame plate 5. After that, the film goes up and around the discharge side, i.e., the guide roller 7 on the side closer to the printing press 2, and finally enters the feed end of the printing press 2. After passing through the inside of the printing press 2 and exiting from the discharge end, it is firmly fixed to the take-up roller 4.

[0019] After setting the film feeding path, the cleaning cover 9 can be installed. The operator aligns the two fixing slots 19 at the bottom of the cleaning cover 9 and places them downwards onto the two pre-welded fixing plates 20 on the support base 1. Once the cleaning cover 9 is in place, fixing bolts 21 are screwed in from both sides of the cleaning cover 9, with the bolt tails passing through the wall of the cleaning cover 9 and finally screwed into the corresponding fixing screw holes 12 on the fixing plates 20, thus firmly locking the cleaning cover 9 in the working position. At this time, the film feeding section and the film discharging section pass through the feeding port 16 and the discharging port 17 on both sides of the cleaning cover 9, respectively. Simultaneously, the other end of the dust cover 18 connected to the discharging port 17 of the cleaning cover 9 is pressed against the feeding end of the printing press housing 2, forming a continuous dustproof channel.

[0020] After the equipment is powered on, the operator first starts the dust exhaust fans 10 on both sides of the cleaning hood 9. The dust exhaust fans 10 start working, creating a negative pressure airflow inside the hood. Then, the printing device is started, and the feeding roller 3, guide roller 7, take-up roller 4, and the transmission mechanism inside the printing machine box 2 begin to work together. The film material moves along the guide path at a set constant speed. During the movement of the film material, as it moves upward, the cleaning block 11 located above the film material, under the continuous elastic force of the spring 13, is guided by the movable sleeve 14, ensuring that the cleaning brush 15 at its bottom is always in close contact with the upper surface of the film material with a stable pressure, and moves accordingly, thereby scraping and sweeping away the dust, debris, and other impurities attached to the upper surface of the film material. Simultaneously, the lower surface of the film material rubs against the cleaning felt 8 on the guide frame plate 5. The felt effectively wipes away the contaminants on the lower surface. The dust generated during the cleaning process is immediately sucked in by the airflow generated by the dust exhaust fans 10 on both sides and continuously discharged through the outlet of the dust exhaust fans 10 to the dust collection device or the environment away from the equipment. After being cleaned on both sides, the clean film material is then directly and without secondary contamination into the feed end of the printing press 2 through a sealed channel completely covered by the dust cover 18, for subsequent precise printing operations.

[0021] All standard parts used in this utility model can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art, and the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here.

[0022] 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.

[0023] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

[0024] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A printing apparatus for producing plastic packaging bags, comprising a support base (1), a printing machine housing (2) at the upper end of the support base (1), a feeding end and a discharging end at both ends of the printing machine housing (2), and a feeding roller (3) and a receiving roller (4) at both ends of the support base (1), characterized in that: The printing press housing (2) is fixedly connected to a guide plate (5) on one side of the feed end. The guide plate (5) is provided with fixed frames (6) on both sides. The fixed frames (6) are rotatably connected to guide rollers (7). The guide plate (5) is covered with a detachable cleaning cover (9). The cleaning cover (9) is provided with a feed inlet (16) and a discharge outlet (17) on both sides. The cleaning cover (9) is equipped with a dust exhaust fan (10) on both sides. The upper end of the cleaning cover (9) is fixedly connected to a movable sleeve (14). A cleaning block (11) located above the guide plate (5) is slidably inserted into the movable sleeve (14). A cleaning brush (15) is fixedly connected to the bottom surface of the cleaning block (11). A spring (13) that cooperates with the cleaning block (11) is fixedly connected inside the movable sleeve (14).

2. The printing apparatus for producing plastic packaging bags according to claim 1, characterized in that: The support base (1) is fixedly connected with fixed insert plates (20) arranged on both sides. The bottom surface of the cleaning cover (9) is provided with fixed slots (19) that cooperate with the fixed insert plates (20). A fixing mechanism is provided between the cleaning cover (9) and the fixed insert plates (20).

3. The printing apparatus for producing plastic packaging bags according to claim 2, characterized in that: The fixing mechanism includes fixing bolts (21) threaded to both sides of the cleaning cover (9) and extending into the fixing slot (19), and fixing screw holes (12) that cooperate with the fixing bolts (21) are provided on the fixing plates (20).

4. A printing apparatus for producing plastic packaging bags according to claim 1, characterized in that: One end of the discharge port (17) of the cleaning cover (9) is fixedly connected to a dust cover (18), and the other end of the dust cover (18) is fixedly connected to the feed end of the printing machine box (2).

5. A printing apparatus for producing plastic packaging bags according to claim 1, characterized in that: A cleaning felt (8) is fixedly connected to the upper end of the guide plate (5).

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