Plastic packaging bag printing machine

Abstract

The utility model relates to a plastic packaging bag printing machine which comprises a bottom plate, side plates are fixed to the positions, close to the left end and the right end, of the upper surface of the bottom plate respectively, a top plate is fixed to the top faces of the two side plates, a cutting mechanism is arranged on the top plate, and conveying mechanisms are arranged on the side plates. The conveying mechanism comprises two connecting blocks fixed to the left end and the right end of the side plate correspondingly, second hydraulic cylinders are fixed into the connecting blocks, mounting blocks are fixed to the output ends of the second hydraulic cylinders, and a second motor is fixed to the right end of the mounting block on the right side of the front face. According to the plastic packaging bag printing machine, by arranging the conveying mechanism, when a plastic packaging bag is conveyed to the cutting plate, the bottom face of a conveying roller can be attached to the top face of the plastic packaging bag under the action of a second hydraulic cylinder according to the thickness of the plastic packaging bag; and the problems of sliding and unstable conveying speed during conveying caused by the fact that the top surface of the packaging bag is not attached to the bottom surface of the conveying roller are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of plastic packaging, in particular to a plastic packaging bag printing machine. Background Art

[0002] Plastic packaging bag printing machine is a machine for printing text and images. It is generally composed of processes such as plate mounting, inking, printing, and transmission to reproduce printed products that are identical to the printing plate.

[0003] For example, Chinese utility model patent: Publication No. CN217021939U discloses a printing machine for PO plastic packaging bags, and its technical solution is as follows: it includes a mounting table and a processing assembly, a support plate is fixedly installed on the inner side of the mounting table, and a mounting frame is fixedly installed on the top of the mounting table; a printing mechanism is provided above the mounting table, a cylinder is fixedly installed on the top of the mounting frame, a hole is opened on the top of the mounting frame, the free end of the cylinder extends through the hole to the inner side of the mounting frame and is fixedly installed with a telescopic rod; the processing assembly includes a discharge mechanism and a fixing mechanism, the outer side of the mounting table is provided on the discharge mechanism and is located below the printing mechanism, and the top of the mounting table is provided on the fixing mechanism and is located below the printing mechanism.

[0004] The applicant has found that there are still some problems in the above technical solution that need to be improved. For example, in the process of feeding and discharging plastic packaging bags, it is not convenient to make adaptive adjustments according to the thickness of the plastic packaging bags. When the thickness of the plastic packaging bags is large or small, the conveying roller cannot fit tightly with the top surface of the plastic packaging bags, resulting in sliding between the conveying roller and the plastic packaging bags, resulting in unstable conveying. For this reason, we propose a plastic packaging bag printing machine to solve the above problems. Utility Model Content

[0005] In view of the shortcomings of the existing technology, the utility model provides a plastic packaging bag printing machine, which has the advantage of being able to quickly adapt to the thickness of the plastic packaging bag and solves the problem of sliding between the bottom surface of the conveying roller and the fitting part of the plastic packaging bag.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solution: a plastic packaging bag printing machine, comprising a bottom plate, side plates fixed to the upper surface of the bottom plate near the left and right ends respectively, a top plate fixed to the top surfaces of the two side plates, a cutting mechanism provided on the top plate, and a conveying mechanism provided on the side plates;

[0007] The conveying mechanism includes two connecting blocks respectively fixed to the left and right ends of the side plates, a second hydraulic cylinder is fixed in the connecting block, a mounting block is fixed to the output end of the second hydraulic cylinder, a second motor is fixed to the right end of the mounting block on the front right side, a rotating shaft is fixed to the output end of the second motor, a rotating rod is rotatably connected between the two mounting blocks on the back left and right sides, conveying rollers are fixed to the outer surfaces of the rotating shaft and the rotating rod, a transmission assembly is provided between the rotating shaft and the rotating rod, and the conveying mechanism also includes conveying rods rotatably connected to the two side plates through bearings and distributed at equal distances.

[0008] Furthermore, an electric push rod is fixed on the top plate, a printing head is fixed on the output end of the electric push rod, two telescopic tubes are fixed on the lower surface of the top plate, telescopic rods are sleeved on the inner circumferential wall of the telescopic tubes, and a cutting plate is fixed on the upper surface of the bottom plate near its center.

[0009] Furthermore, the transmission assembly includes a driving sprocket fixed to the outer surface of the rotating shaft, the outer surface of the driving sprocket is transmission-connected with a transmission chain, the end of the transmission chain away from the driving sprocket is transmission-connected with a driven sprocket, and the driven sprocket is fixed to the outer surface of the rotating rod.

[0010] Furthermore, a plurality of anti-slip protrusions distributed at equal intervals are fixed on the outer surface of the conveying roller, and the plurality of anti-slip protrusions are all soft.

[0011] Furthermore, two rectangular through slots are provided on the two side panels for the rotation shaft and the rotation rod to move respectively.

[0012] Furthermore, the bottom surfaces of the two telescopic rods are fixed to the top surface of the printing head.

[0013] Furthermore, the cutting mechanism includes two groups of fixed blocks fixed to the upper surface of the top plate, with each group having two blocks. A first motor is fixed to the front of the fixed block on the right front side, a screw is fixed to the output shaft of the first motor, and a moving block is threadedly connected to the outer surface of the screw. A sliding rod is fixed between the two fixed blocks on the left side, and a slider is slidably connected to the outer surface of the sliding rod. A first hydraulic cylinder is fixed to the lower surface of the moving block and the slider, and the output ends of the two first hydraulic cylinders are fixed to the cutting knife body.

[0014] Furthermore, a plurality of cutting grooves are provided on the upper surface of the cutting plate, and the sizes of the plurality of cutting grooves are adapted to the cutting blade body.

[0015] Furthermore, two long holes are opened on the upper surface of the top plate, and the two long holes are respectively used for the movement of the moving block and the sliding block.

[0016] Compared with the existing technology, the technical solution of this application has the following beneficial effects:

[0017] 1. The plastic packaging bag printing machine is provided with a conveying mechanism. When conveying the plastic packaging bags to the cutting board, the bottom surface of the conveying roller can be fitted with the top surface of the plastic packaging bags under the action of the second hydraulic cylinder according to the thickness of the plastic packaging bags, thereby avoiding the problem of slipping and unstable conveying speed during conveying caused by the top surface of the packaging bags not fitting with the bottom surface of the conveying roller.

[0018] 2. The plastic packaging bag printing machine, through the cutting mechanism, can drive the cutting knife body to move back and forth when it is necessary to cut the plastic packaging bag, thereby controlling the cutting position. When plastic packaging bags of different sizes are needed, the cutting mechanism can be flexibly adjusted to achieve the purpose of controlling the size of the plastic packaging bags, thereby improving the efficiency of production personnel in cutting plastic packaging bags of different sizes. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the utility model structure with the top plate removed;

[0021] Figure 3 This is a schematic structural diagram of the cutting mechanism of the utility model;

[0022] Figure 4 It is a structural diagram of the conveying mechanism of the utility model.

[0023] In the figure: 1. bottom plate; 2. side plate; 3. top plate; 4. cutting mechanism; 401. fixed block; 402. first motor; 403. screw rod; 404. moving block; 405. slide rod; 406. slide block; 407. first hydraulic cylinder; 408. cutting knife body; 5. conveying mechanism; 501. connecting block; 502. second hydraulic cylinder; 503. mounting block; 504. second motor; 505. rotating shaft; 506. conveying roller; 507. rotating rod; 508. transmission assembly; 509. conveying rod; 6. electric push rod; 7. printing head; 8. telescopic rod; 9. telescopic tube; 10. cutting plate. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] See also Figure 1-2In this embodiment, a plastic packaging bag printing machine includes a bottom plate 1, and side plates 2 are fixed on the upper surface of the bottom plate 1 near the left and right ends respectively. A top plate 3 is fixed on the top surfaces of the two side plates 2. Two long holes are opened on the upper surface of the top plate 3. A cutting mechanism 4 is provided on the top plate 3, and a conveying mechanism 5 is provided on the side plate 2; an electric push rod 6 is fixed on the top plate 3, and a printing head 7 is fixed on the output end of the electric push rod 6; two telescopic tubes 9 are fixed on the lower surface of the top plate 3, and a telescopic rod 8 is sleeved on the inner circumferential wall of the telescopic tube 9. The bottom surfaces of the two telescopic rods 8 are fixed to the top surface of the printing head 7; a cutting plate 10 is fixed on the upper surface of the bottom plate 1 near its center, and a plurality of cutting grooves are opened on the upper surface of the cutting plate 10.

[0026] In this embodiment, by providing the cutting mechanism 4, plastic packaging bags of different sizes can be conveniently cut according to needs, and by providing the conveying mechanism 5, plastic packaging bags of different thicknesses can also be stably conveyed.

[0027] See also Figure 3 In order to cut plastic packaging bags of different sizes, the cutting mechanism 4 in this embodiment includes two groups of fixed blocks 401 fixed to the upper surface of the top plate 3, each group with two numbers. A first motor 402 is fixed to the front of the right front fixed block 401, and a screw rod 403 is fixed to the output shaft of the first motor 402. The outer surface of the screw rod 403 is threadedly connected to a moving block 404. A sliding rod 405 is fixed between the two left fixed blocks 401, and a slider 406 is slidably connected to the outer surface of the sliding rod 405. Two long holes are respectively used for the moving block 404 and the slider 406 to move. A first hydraulic cylinder 407 is fixed to the lower surface of the moving block 404 and the slider 406. The output ends of the two first hydraulic cylinders 407 are fixed to a cutting knife body 408, and the sizes of the multiple cutting grooves are adapted to the cutting knife body 408.

[0028] During operation, when the position of the cutting knife body 408 needs to be adjusted, the first motor 402 is first started. When the output shaft of the first motor 402 rotates, it will drive the screw rod 403 to rotate. During the rotation of the screw rod 403, the moving block 404 threadedly connected to it will be driven to move. Under the limiting action of the slide bar 405 and the slider 406, the moving block 404 will be restricted from rotating with the screw rod 403, so that the moving block 404 and the slider 406 move forward or backward at the same time. During movement, the moving block 404 and then the slider 406 respectively drive the two first hydraulic cylinders 407 to move with it, thereby achieving the purpose of driving the cutting knife body 408 to move back and forth, so as to achieve the purpose of cutting plastic packaging bags of different sizes.

[0029] See also Figure 4In order to ensure that the bottom surface of the conveying roller 506 can always be in contact with the top surface of the plastic packaging bag, the conveying mechanism 5 in this embodiment includes two connecting blocks 501 fixed to the left and right ends of the side plate 2, a second hydraulic cylinder 502 is fixed in the connecting block 501, and a mounting block 503 is fixed to the output end of the second hydraulic cylinder 502. A second motor 504 is fixed to the right end of the mounting block 503 on the front right side, and a rotating shaft 505 is fixed to the output end of the second motor 504. A rotating rod 507 is rotatably connected between the left and right mounting blocks 503 on the back side. Two rectangular holes are provided on both side plates 2 for the rotating shaft 505 and the rotating rod 507 to move. Through groove, the outer surfaces of the rotating shaft 505 and the rotating rod 507 are fixed with conveying rollers 506, and the outer surfaces of the conveying rollers 506 are fixed with multiple anti-slip protrusions distributed at equal distances, and the multiple anti-slip protrusions are all soft. A transmission component 508 is provided between the rotating shaft 505 and the rotating rod 507, and the transmission component 508 includes a driving sprocket fixed to the outer surface of the rotating shaft 505, and the outer surface of the driving sprocket is connected to the transmission chain, and the end of the transmission chain away from the driving sprocket is connected to the driven sprocket, and the driven sprocket is fixed to the outer surface of the rotating rod 507. The conveying mechanism 5 also includes a conveying rod 509 that is rotatably connected to the two side plates 2 through bearings and is distributed at equal distances.

[0030] When working, first, by starting the four second hydraulic cylinders 502, when the four second hydraulic cylinders 502 act simultaneously, the four mounting blocks 503 will be driven to move downward at the same time. When the four mounting blocks 503 move downward, they will drive the rotating shaft 505 and the rotating rod 507 to move downward, so that the conveying roller 506 fixed on the outer surface of the rotating shaft 505 and the rotating rod 507 is in close contact with the top surface of the plastic packaging bag. Further, by starting the second motor 504, when the output shaft of the second motor 504 rotates, it will drive the rotating shaft 505 to rotate, and when the rotating shaft 505 rotates, it will transmit the rotation to the rotating rod 507 through the transmission assembly 508. At that time, the rotating rod 507 and the rotating shaft 505 rotate simultaneously. When rotating, they drive the conveying roller 506 fixed to the outer surface of the rotating shaft 505 and the rotating rod 507 to rotate, so that the bottom surface of the conveying roller 506 is in close contact with the top surface of the plastic packaging bag, avoiding the problem of slippage between the plastic packaging bag and the conveying roller 506, which leads to unstable conveying speed.

[0031] See also Figure 1 、 Figure 2 、 Figure 3 as well as Figure 4During cutting, one end of the plastic packaging bag is first placed on the conveying rod 509, and then the bottom surface of the conveying roller 506 is laminated with the top surface of the plastic packaging bag. At the same time, by starting the second motor 504, the second motor 504 will drive the conveying roller 506 to convey the plastic packaging bag when rotating. When the plastic packaging bag is conveyed to the cutting plate 10, the electric push rod 6 is first actuated to move the printing head 7 to the top surface of the plastic packaging bag, thereby printing the plastic packaging bag. After printing, the first motor 402 is started to drive the cutting knife body 408 to move to the position where cutting is required. Further, by starting the two first hydraulic cylinders 407, the two first hydraulic cylinders 407 are actuated to drive the cutting knife body 408 to move downward, thereby cutting the printed plastic packaging bag.

[0032] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply the existence of any such actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element.

[0033] Although the 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 variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A plastic packaging bag printing machine, comprising a bottom plate (1), characterized in that: Side plates (2) are fixed on the upper surface of the bottom plate (1) and close to the left and right ends respectively, top plates (3) are fixed on the top surfaces of the two side plates (2), a cutting mechanism (4) is provided on the top plate (3), and a conveying mechanism (5) is provided on the side plates (2); The conveying mechanism (5) comprises two connecting blocks (501) respectively fixed to the left and right ends of the side plate (2); a second hydraulic cylinder (502) is fixed inside the connecting block (501); a mounting block (503) is fixed to the output end of the second hydraulic cylinder (502); a second motor (504) is fixed to the right end of the mounting block (503) on the front right side; a rotating shaft (505) is fixed to the output end of the second motor (504); a rotating rod (507) is rotatably connected between the two mounting blocks (503) on the back left and right sides; conveying rollers (506) are fixed to the outer surfaces of the rotating shaft (505) and the rotating rod (507); a transmission assembly (508) is provided between the rotating shaft (505) and the rotating rod (507); and the conveying mechanism (5) further comprises conveying rods (509) rotatably connected to the two side plates (2) via bearings and equidistantly distributed.

2. A plastic packaging bag printing machine according to claim 1, characterized in that: An electric push rod (6) is fixed on the top plate (3), a printing head (7) is fixed to the output end of the electric push rod (6), two telescopic tubes (9) are fixed to the lower surface of the top plate (3), telescopic rods (8) are sleeved on the inner peripheral walls of the telescopic tubes (9), and a cutting plate (10) is fixed to the upper surface of the bottom plate (1) near its center.

3. A plastic packaging bag printing machine according to claim 1, characterized in that: The transmission assembly (508) comprises a driving sprocket fixed to the outer surface of the rotating shaft (505), the outer surface of the driving sprocket being drivingly connected to a transmission chain, an end of the transmission chain away from the driving sprocket being drivingly connected to a driven sprocket, and the driven sprocket being fixed to the outer surface of the rotating rod (507).

4. A plastic packaging bag printing machine according to claim 1, characterized in that: A plurality of anti-slip protrusions distributed at equal intervals are fixed to the outer surface of the conveying roller (506), and the plurality of anti-slip protrusions are all soft.

5. The plastic packaging bag printing machine according to claim 1, characterized in that: The two side plates (2) are each provided with two rectangular through slots for the rotation shaft (505) and the rotation rod (507) to move respectively.

6. A plastic packaging bag printing machine according to claim 2, characterized in that: The bottom surfaces of the two telescopic rods (8) are fixed to the top surface of the printing head (7).

7. The plastic packaging bag printing machine according to claim 1, characterized in that: The cutting mechanism (4) comprises two groups of fixed blocks (401) fixed to the upper surface of the top plate (3), each group having two fixed blocks. A first motor (402) is fixed to the front of the fixed block (401) on the right front side. A screw rod (403) is fixed to the output shaft of the first motor (402). The outer surface of the screw rod (403) is threadedly connected to a moving block (404). A sliding rod (405) is fixed between the two fixed blocks (401) on the left side. A sliding block (406) is slidably connected to the outer surface of the sliding rod (405). A first hydraulic cylinder (407) is fixed to the lower surface of the moving block (404) and the sliding block (406). A cutting knife body (408) is fixed to the output ends of the two first hydraulic cylinders (407).

8. The plastic packaging bag printing machine according to claim 2, characterized in that: The upper surface of the cutting plate (10) is provided with a plurality of cutting grooves, and the sizes of the plurality of cutting grooves are compatible with the cutting knife body (408).

9. The plastic packaging bag printing machine according to claim 7, characterized in that: The upper surface of the top plate (3) is provided with two left and right elongated holes, and the two elongated holes are respectively used for the movement of the moving block (404) and the sliding block (406).

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