Plastic white bag printing device

Abstract

The utility model discloses a plastic white bag printing device, which belongs to the technical field of plastic bag processing and comprises a support frame, two symmetrically distributed support plates are fixedly connected to two sides of the top of the support frame, extrusion rollers are arranged on the outer surfaces, close to each other, of the two support plates, and the extrusion rollers are used for flattening the surfaces of plastic white bags. A height adjusting assembly, a conveying assembly and an intermittent printing assembly are arranged in each of the two supporting plates, and a rotating handle drives a threaded rod to rotate in the rotating process according to the requirement for the thickness or the flattening degree of the plastic white bag needing to be flattened; a threaded rod drives sliding blocks to move along a guide rail in a notch formed in a supporting plate in the rotating process and extrudes a telescopic spring, and the distance between the two sliding blocks and a first driving motor can be adjusted, so that the distance between an extrusion roller and the first driving motor is adjusted; when the plastic white bag passes through the extrusion roller, the outer surface of the plastic white bag can be flattened, and the flattened plastic white bag is printed, so that the printing effect of the plastic white bag can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of plastic bag processing, and more specifically, to a printing device for plastic white bags. Background Art

[0002] A plastic white bag is a plastic bag made of polyethylene (PE) material, and it gets this name because of its white color. Polyethylene is a polymer material obtained by polymerizing ethylene monomers, and it has the characteristics of light weight, high strength, waterproof, moisture-proof, airtight, etc. Plastic white bags are widely used because of their characteristics and can be used to package items such as clothing, shoes and hats, food, flowers, toys, etc. At the same time, due to its advantages such as low production cost, light texture, and good light transmittance, it has also become an indispensable item in the fields of logistics transportation, supermarket shopping, household waste classification, etc.

[0003] Printing during the processing of plastic white bags can play the roles of beautification and personalization. Printing can add aesthetic and personalized elements to plastic white bags; brand promotion and publicity, printing can be used as a means of brand promotion and publicity; differentiation and identification, printing can help distinguish and identify different plastic white bags; increasing added value, printing can increase the added value of plastic white bags. By printing high-quality patterns or texts, the grade and quality sense of plastic white bags can be improved, and the purchasing desire of consumers can be increased. Generally speaking, printing plays an important role in the processing of plastic white bags. It can not only improve the aesthetics and personalization of products, but also be used as a means of brand promotion and publicity to increase the added value of products.

[0004] Although there are many beneficial effects of printing plastic white bags, due to the characteristics of the plastic white bag material during the printing process of plastic white bags, the plastic white bags may be prone to wrinkling during printing, which will thus affect the final printing effect of plastic white bags. Summary of the Utility Model

[0005] (1) Technical Problems to be Solved

[0006] In view of the deficiencies of the prior art, the utility model provides a printing device for plastic white bags, which solves the above problems.

[0007] (2) Technical Solutions

[0008] To achieve the above - mentioned purpose, the utility model provides the following technical solutions: A plastic white bag printing device, including a support frame. On both sides of the top of the support frame, there are two symmetrically distributed support plates fixedly connected. On the outer surfaces of the two support plates close to each other, there is a pressing roller, which is used to flatten the surface of the plastic white bag. Inside both of the support plates, there is a height - adjusting component for adjusting the distance between the pressing roller and the plastic white bag. The height - adjusting component includes a threaded rod, a sliding block, a turning handle, and a guide rail. There is a notch on the outer surface of the support plate. Inside the support plate corresponding to the notch, a threaded rod is rotatably connected. At the top of the threaded rod, a turning handle is fixedly connected. At the bottom of the threaded rod, a sliding block is fixedly connected. On both outer surfaces of the support plate corresponding to the notch, guide rails are fixedly connected. The sliding block is slidably connected to the outer surfaces of the two guide rails. The outer surfaces of the two sliding blocks close to each other are rotatably connected to the pressing roller. It also includes:

[0009] A conveying component, which is located on the outer surfaces of the two support plates close to each other and is used to convey the plastic white bag;

[0010] An intermittent printing component, which is located above the support frame and is used to print on the plastic white bag.

[0011] Preferably, a telescopic spring is fixedly connected to the bottom of the sliding block, and the telescopic spring is fixedly connected to the outer surface of the support plate.

[0012] Preferably, the conveying component includes a first driving motor, a transmission belt, and a conveying roller. On the outer surfaces of the two support plates close to each other, a plurality of equidistantly distributed conveying rollers are rotatably connected. The transmission belt is sleeved on the outer surfaces of the plurality of conveying rollers. The first driving motor is fixedly installed on the outer surface of the support plate, and the output end of the first driving motor penetrates through the support plate and is fixedly connected to the adjacent conveying roller.

[0013] Preferably, the transmission belt is located below the pressing roller, which is convenient for flattening the surface of the plastic white bag during the conveying process.

[0014] Preferably, the intermittent printing component includes a second driving motor, a bidirectional threaded rod, a moving block, a printing plate, and a connecting rod. On the outer surfaces of the two support plates close to each other, a bidirectional threaded rod is rotatably connected. On the outer surface of the bidirectional threaded rod, two symmetrically distributed moving blocks are threadedly connected. On the outer surfaces of both sides of the two moving blocks, connecting rods are rotatably connected. The other ends of the four connecting rods are rotatably connected to the printing plate through bearing seats. The second driving motor is fixedly installed on the outer surface of the support plate, and the output end of the second driving motor penetrates through the support plate and is fixedly connected to the bidirectional threaded rod.

[0015] Preferably, the printing plate is located above the transmission belt and is used to print on the plastic white bag on the transmission belt.

[0016] Preferably, universal wheels are fixedly installed at the four corners of the bottom of the support frame.

[0017] (III) Beneficial effects

[0018] Compared with the prior art, the present utility model provides a plastic white bag printing device, which has the following

[0019] beneficial effects:

[0020] 1. Through the height adjustment component of the plastic white bag printing device, according to the thickness of the plastic white bag to be flattened or the requirement of the flattening degree, turn the turning handle, so that the turning handle drives the threaded rod to rotate during the rotation process. The threaded rod drives the sliding block to move along the guide rail in the slot opened on the support plate and squeeze the telescopic spring during the rotation process, so that the distance between the two sliding blocks and the first driving motor can be adjusted, and further the distance between the extrusion roller and the first driving motor can be adjusted. When the distance between the extrusion roller and the first driving motor is shorter, the flattening degree is greater or the thickness of the plastic white bag is smaller. When the plastic white bag passes under the extrusion roller, its outer surface can be flattened, and the flattened plastic white bag can be printed again to improve the printing effect of the plastic white bag.

[0021] 2. Through the intermittent printing component of the plastic white bag printing device, the second driving motor drives the bidirectional threaded rod to rotate, so that the two moving blocks move towards the center of the bidirectional threaded rod, and at the same time, the inclination angles of the four connecting rods gradually become larger. Then, the printing plate moves to the plastic white bag under the push of the connecting rod, and the printing pattern set at the bottom of the printing plate can perform the printing work on the plastic white bag. The printing interval can be controlled by adjusting the rotation speed of the second driving motor, which is convenient for adjustment according to the processing requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a schematic structural diagram of the present utility model;

[0023] Figure 2 is the present utility model Figure 1 the enlarged view of the structure at A in;

[0024] Figure 3 is a side view of the structure of the present utility model;

[0025] Figure 4 is a schematic structural diagram of the conveying roller of the present utility model.

[0026] In the figure: 1, support frame; 2, support plate; 3, first driving motor; 4, extrusion roller; 5, universal wheel; 6, threaded rod; 7, second driving motor; 8, bidirectional threaded rod; 9, sliding block; 10, telescopic spring; 11, moving block; 12, turning handle; 13, transmission belt; 14, printing plate; 15, connecting rod; 16, conveying roller; 17, guide rail. Detailed implementation manners

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0028] Please refer to Figures 1-4 , the present utility model provides a technical solution:

[0029] A plastic white bag printing device includes a support frame 1. Two symmetrically distributed support plates 2 are fixedly connected to both sides of the top of the support frame 1. An extrusion roller 4 is provided on the outer surfaces of the two support plates 2 close to each other. The extrusion roller 4 is used to flatten the surface of the plastic white bag. Height adjustment components are provided inside both support plates 2 for adjusting the distance between the extrusion roller 4 and the plastic white bag. The height adjustment component includes a threaded rod 6, a sliding block 9, a turning handle 12, and a guide rail 17. A notch is formed on the outer surface of the support plate 2. The threaded rod 6 is rotatably connected to the inside of the support plate 2 corresponding to the notch. The turning handle 12 is fixedly connected to the top of the threaded rod 6. The sliding block 9 is fixedly connected to the bottom of the threaded rod 6. Guide rails 17 are fixedly connected to the outer surfaces on both sides of the support plate 2 corresponding to the notch. The sliding block 9 is slidably connected to the outer surfaces of the two guide rails 17. The outer surfaces of the two sliding blocks 9 close to each other are rotatably connected to the extrusion roller 4. It further includes:

[0030] A conveying component, which is located on the outer surfaces of the two support plates 2 close to each other and is used for conveying the plastic white bag;

[0031] An intermittent printing component, which is located above the support frame 1 and is used for printing the plastic white bag.

[0032] Furthermore, a telescopic spring 10 is fixedly connected to the bottom of the sliding block 9, and the telescopic spring 10 is fixedly connected to the outer surface of the support plate 2. According to the thickness of the plastic white bag to be flattened or the requirement of the flattening degree, rotate the turning handle 12, so that the turning handle 12 drives the threaded rod 6 to rotate during the rotation process. The threaded rod 6 drives the sliding block 9 to move along the guide rail 17 in the notch opened in the support plate 2 and compress the telescopic spring 10 during the rotation process. Thus, the distance between the two sliding blocks 9 and the first driving motor 3 can be adjusted, and further the distance between the extrusion roller 4 and the first driving motor 3 can be adjusted. When the distance between the extrusion roller 4 and the first driving motor 3 is shorter, the flattening degree is greater or the thickness of the plastic white bag is smaller.

[0033] Furthermore, the conveying assembly includes a first driving motor 3, a conveyor belt 13 and conveyor rollers 16. A plurality of conveyor rollers 16 are rotatably connected to the outer surfaces of the two support plates 2 close to each other and are equally spaced. The outer surfaces of the plurality of conveyor rollers 16 are sleeved with the conveyor belt 13. A first driving motor 3 is fixedly installed on the outer surface of the support plate 2. The output end of the first driving motor 3 penetrates through the support plate 2 and is fixedly connected to the adjacent conveyor roller 16. The first driving motor 3 drives the conveyor roller 16 to rotate, and then drives the other plurality of conveyor rollers 16 to rotate under the pulling of the conveyor belt 13, so that the plurality of conveyor rollers 16 drive the conveyor belt 13 to convey the plastic white bags during rotation.

[0034] Furthermore, the conveyor belt 13 is located below the pressing roller 4, which is convenient for flattening the surface of the plastic white bag during the conveying process. When the plastic white bag passes under the pressing roller 4, its outer surface can be flattened.

[0035] Furthermore, the intermittent printing assembly includes a second driving motor 7, a bidirectional threaded rod 8, moving blocks 11, a printing plate 14 and connecting rods 15. A bidirectional threaded rod 8 is rotatably connected to the outer surfaces of the two support plates 2 close to each other. The outer surface of the bidirectional threaded rod 8 is threadedly connected with two symmetrically distributed moving blocks 11. The outer surfaces of both sides of the two moving blocks 11 are rotatably connected with connecting rods 15. The other ends of the four connecting rods 15 are rotatably connected to the printing plate 14 through bearing seats. A second driving motor 7 is fixedly installed on the outer surface of the support plate 2. The output end of the second driving motor 7 penetrates through the support plate 2 and is fixedly connected to the bidirectional threaded rod 8. The second driving motor 7 drives the bidirectional threaded rod 8 to rotate, so that the two moving blocks 11 move towards the center of the bidirectional threaded rod 8, and at the same time, the inclination angles of the four connecting rods 15 gradually become larger, so that the printing plate 14 moves to the plastic white bag under the push of the connecting rods 15.

[0036] Furthermore, the printing plate 14 is located above the conveyor belt 13 and is used for printing the plastic white bags on the conveyor belt 13. The printing provided at the bottom of the printing plate 14 can perform the printing work on the plastic white bags.

[0037] Furthermore, universal wheels 5 are fixedly installed at the four corners of the bottom of the support frame 1, and the four universal wheels 5 can be pushed to move the support frame 1 to a suitable position.

[0038] Working principle: When the staff needs to use this plastic white bag printing device, they can push the four universal wheels 5 and then move the support frame 1 to a suitable position. After that, place the plastic white bag to be printed on the conveyor belt 13. Start the first driving motor 3 installed on the outer surface of the support plate 2. The first driving motor 3 drives the conveyor roller 16 to rotate. Then, driven by the conveyor belt 13, it drives the rotation of other multiple conveyor rollers 16. Thus, during the rotation of the multiple conveyor rollers 16, the conveyor belt 13 is driven to convey the plastic white bag. According to the thickness or the required flattening degree of the plastic white bag to be flattened, rotate the handle 12. When the handle 12 rotates, it drives the threaded rod 6 to rotate. During the rotation of the threaded rod 6, the sliding block 9 moves along the guide rail 17 in the notch opened on the support plate 2 and squeezes the telescopic spring 10. Therefore, the distance between the two sliding blocks 9 and the first driving motor 3 can be adjusted, and further the distance between the pressing roller 4 and the first driving motor 3 can be adjusted. When the distance between the pressing roller 4 and the first driving motor 3 is shorter, the flattening degree is greater or the thickness of the plastic white bag is smaller. When the plastic white bag passes under the pressing roller 4, its outer surface can be flattened. The flattened plastic white bag continues to be conveyed by the conveyor belt 13 to under the printing plate 14. Start the second driving motor 7. The second driving motor 7 drives the bidirectional threaded rod 8 to rotate. Then, the two moving blocks 11 move towards the center of the bidirectional threaded rod 8, and at the same time, the inclination angles of the four connecting rods 15 gradually become larger. Thus, the printing plate 14 is pushed by the connecting rods 15 to move to the plastic white bag. The printing provided at the bottom of the printing plate 14 can perform the printing work on the plastic white bag. The printing interval can be controlled by adjusting the rotation speed of the second driving motor 7.

[0039] The above shows and describes the basic principle, main features and advantages of the present utility model. Those skilled in the art of this industry should understand that the present utility model is not limited by the above embodiments. The above embodiments and the descriptions in the specification are only the preferred examples of the present utility model and are not used to limit the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.

Claims

1. A plastic white bag printing device, comprising a support frame (1), and two symmetrically distributed support plates (2) are fixedly connected to both sides of the top of the support frame (1), and it is characterized in that: An extrusion roller (4) is provided on the outer surface of the two support plates (2) close to each other. The extrusion roller (4) is used to flatten the surface of the plastic white bag. A height adjustment component is provided inside each of the two support plates (2) for adjusting the distance between the extrusion roller (4) and the plastic white bag. The height adjustment component includes a threaded rod (6), a sliding block (9), a turning handle (12), and a guide rail (17). A notch is formed on the outer surface of the support plate (2). The threaded rod (6) is rotatably connected inside the support plate (2) corresponding to the notch. The top of the threaded rod (6) is fixedly connected to the turning handle (12). The bottom of the threaded rod (6) is fixedly connected to the sliding block (9). Guide rails (17) are fixedly connected to the outer surfaces on both sides of the support plate (2) corresponding to the notch. The sliding block (9) is slidably connected to the outer surfaces of the two guide rails (17). The outer surfaces of the two sliding blocks (9) close to each other are rotatably connected to the extrusion roller (4). Further included are: A conveying component, which is located on the outer surfaces of the two support plates (2) close to each other and is used to convey the plastic white bag; An intermittent printing component, which is located above the support frame (1) and is used to print on the plastic white bag.

2. The plastic white bag printing device according to claim 1, characterized in that: A telescopic spring (10) is fixedly connected to the bottom of the sliding block (9), and the telescopic spring (10) is fixedly connected to the outer surface of the support plate (2).

3. A plastic white bag printing device according to claim 1, characterized in that: The conveying component includes a first driving motor (3), a transmission belt (13), and conveying rollers (16). A plurality of equidistantly distributed conveying rollers (16) are rotatably connected to the outer surfaces of the two support plates (2) close to each other. The transmission belt (13) is sleeved on the outer surfaces of the plurality of conveying rollers (16). The first driving motor (3) is fixedly installed on the outer surface of the support plate (2). The output end of the first driving motor (3) penetrates through the support plate (2) and is fixedly connected to the adjacent conveying roller (16).

4. A plastic white bag printing device according to claim 3, characterized in that: The transmission belt (13) is located below the extrusion roller (4) to facilitate flattening the surface of the plastic white bag during the conveying process.

5. A plastic white bag printing device according to claim 1, characterized in that: The intermittent printing component includes a second driving motor (7), a bidirectional threaded rod (8), moving blocks (11), a printing plate (14), and connecting rods (15). The bidirectional threaded rod (8) is rotatably connected to the outer surfaces of the two support plates (2) close to each other. Two symmetrically distributed moving blocks (11) are threadedly connected to the outer surface of the bidirectional threaded rod (8). Connecting rods (15) are rotatably connected to the outer surfaces on both sides of the two moving blocks (11). The other ends of the four connecting rods (15) are rotatably connected to the printing plate (14) through bearing seats. The second driving motor (7) is fixedly installed on the outer surface of the support plate (2). The output end of the second driving motor (7) penetrates through the support plate (2) and is fixedly connected to the bidirectional threaded rod (8).

6. A plastic white bag printing device according to claim 5, characterized in that: The printing plate (14) is located above the transmission belt (13) and is used to print on the plastic white bag on the transmission belt (13).

7. A plastic white bag printing device according to claim 1, characterized in that: Universal wheels (5) are fixedly installed at the four corners of the bottom of the support frame (1).

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