Automatic feeding device for printing on packaging paper bags

Abstract

An automatic feeding device for printing paper bags, relating to the field of automatic feeding of packaging paper, includes a front support platform with two paper bag boxes mounted on it. A rotating mechanism with an air pump mechanism is mounted on the front support platform. A printing mechanism is mounted above the rotating mechanism on the front support platform, and a positioning mechanism is also mounted on the front support platform. This invention automatically uses the negative pressure generated by the air pump to suck up paper bags by rotating the cross-shaped box, sucking them up from the side to prevent the folded parts at the bottom of the paper bags from sticking together. The device automatically adjusts the position of the paper bags during rotation via push blocks and positioning grooves. Ink is dried by blowing air through a first and second air jet pipe, allowing the printed paper bags to be directly stored. A sealing plate blocks one of the four pipes forming the cross-shaped box, cutting off the negative pressure connection and causing the sucked-up paper bags to automatically fall and be stored. This device has a high degree of automation and enables rapid printing of paper bags.

Description

Technical Field

[0001] This invention relates to the field of automatic feeding of packaging paper, and in particular to an automatic feeding device for printing packaging paper bags. Background Technology

[0002] To enhance aesthetics and advertising effects, packaging paper bags often require printing designs during production. While the technology for printing paper bags is relatively mature, precise placement of the bags during printing is crucial to prevent misalignment of the designs. Current methods involve manually placing the bags in the designated printing positions and then using positioning blocks for comparison, which is inefficient and hinders high-speed printing. Furthermore, to save space, paper bags are often stacked vertically in storage devices. When manually retrieving the bags, the folded bottoms tend to stick together, making retrieval inconvenient. After printing, the ink on the bags often requires a drying period before they can be immediately stacked. This necessitates workers setting the printed bags aside to dry, taking up considerable space and increasing storage difficulty. Summary of the Invention

[0003] To overcome the shortcomings of the prior art, this invention discloses an automatic feeding device for printing paper bags. This invention automatically uses the negative pressure generated by an air pump to suck up paper bags by rotating a cross-shaped box. The paper bags are sucked up from the side, preventing the folded parts at the bottom of the bags from sticking together. The push block and positioning groove automatically adjust the position of the paper bags during rotation. The ink is dried by blowing air through the first and second air jet pipes, allowing the printed paper bags to be directly stored. The sealing plate cuts off the negative pressure connection of the bottom pipe among the four pipes constituting the cross-shaped box, causing the sucked-up paper bags to automatically fall and be stored. This achieves automatic feeding and unloading of paper bags, with a high degree of automation, enabling rapid printing of paper bags.

[0004] To achieve the aforementioned objective, the present invention employs the following technical solution:

[0005] An automatic feeding device for printing paper bags includes a front support platform, on which two paper bag boxes are mounted. A rotating mechanism is mounted on the front support platform, and an air pump mechanism is mounted on the rotating mechanism. A printing mechanism is mounted on the front support platform above the rotating mechanism, and a positioning mechanism is mounted on the front support platform.

[0006] A rear support plate is fixed behind the front support platform. An L-shaped positioning plate is fixed to the left front end of the upper surface of the rear support plate. A central groove is opened on the right side of the front side of the rear support plate. A positioning groove is opened on the rear support plate below the central groove.

[0007] Both paper bag boxes are open at both ends and top, and are placed in L-shaped positioning plates and positioning slots respectively.

[0008] The rotating mechanism includes a motor, which is fixed on the upper surface of the rear support plate. A rotating shaft is connected to the output shaft on the front side of the motor via a coupling, and a cross housing is fixed on the rotating shaft.

[0009] The cross-shaped box is composed of four mutually perpendicular and interconnected pipes. Each of the four pipes has a fixing rod fixed inside it, and the outer end of the fixing rod is fixed with a first printing mold. The front side of the cross-shaped box has an installation hole.

[0010] The air pump mechanism includes an air pump, which is fixed on the upper surface of the front support platform. The air pump has connecting pipes on the left inlet and right outlet. A suction pipe is vertically connected and fixed to the left connecting pipe. A sealing plate is fixed to the lower rear end of the suction pipe, and a sealing cap is fixed to the rear end of the sealing plate.

[0011] The suction pipe is rotatably connected to the mounting hole. A first jet pipe is vertically connected and fixed to the connecting pipe on the right side of the air pump, and a second jet pipe is vertically connected and fixed to the first jet pipe.

[0012] The printing mechanism includes two mounting plates, which are symmetrically fixed to the front support platform on the front side of the middle tank and the rear support plate on the rear side of the middle tank. The upper ends of the two mounting plates are rotatably connected to a fixed shaft, a rotating roller is fixed in the middle of the fixed shaft, a push block is fixed directly below the side of the rotating roller, and a second printing mold is fixed on the side of the rotating roller in front of the push block.

[0013] The positioning mechanism includes two support plates, which are symmetrically fixed to the front support platform on the front right side of the L-shaped positioning plate and the rear support plate on the rear right side of the L-shaped positioning plate, respectively. An arc-shaped positioning arc plate is formed on the upper part of the support plates, and a positioning groove is opened on the inner side of the positioning arc plate.

[0014] The outer ends of the second printing mold and the first printing mold are arc-shaped.

[0015] Due to the adoption of the above technical solution, the present invention has the following beneficial effects:

[0016] The present invention discloses an automatic feeding device for printing paper bags. By rotating the cross-shaped box, the device automatically uses the negative pressure generated by the air pump to suck up the paper bags from the side, preventing the folded parts at the bottom of the paper bags from sticking together. The device automatically adjusts the position of the paper bags during rotation through push blocks and positioning grooves. The ink is dried by blowing air through the first and second air jet pipes, allowing the printed paper bags to be directly stored. The sealing plate blocks one of the four pipes forming the cross-shaped box, which is located at the bottom, cutting off the negative pressure connection and causing the sucked paper bags to fall down automatically for storage. This device achieves automatic feeding and unloading of paper bags for printing, with a high degree of automation, enabling rapid printing of paper bags. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0018] Figure 2 This is a frontal half-section perspective view of the present invention;

[0019] Figure 3 This is a schematic diagram of the internal assembly three-dimensional structure of the present invention;

[0020] Figure 4 This is a schematic diagram of the three-dimensional structure of the rotating mechanism assembly of the present invention;

[0021] Figure 5 This is a three-dimensional structural diagram of the air pump mechanism of the mounting cylinder of the present invention;

[0022] Figure 6 This is a three-dimensional structural diagram of the positioning mechanism of the present invention;

[0023] Figure 7 This is a three-dimensional structural diagram of the printing mechanism of the present invention.

[0024] 1. Front support platform; 101. L-shaped positioning plate; 102. Middle groove; 103. Positioning groove; 104. Rear support plate; 2. Paper bag box; 3. Motor; 301. Rotating shaft; 302. Cross-shaped box body; 303. First printing mold; 304. Fixing rod; 305. Mounting hole; 4. Mounting plate; 401. Fixing shaft; 402. Rotating roller; 403. Push block; 404. Second printing mold; 5. Air pump; 501. Connecting air pipe; 502. Suction pipe; 503. First air jet pipe; 504. Second air jet pipe; 505. Sealing cover; 506. Sealing plate; 6. Support plate; 601. Positioning arc plate; 602. Positioning groove. Detailed Implementation

[0025] The present invention will be explained in detail through the following embodiments. The purpose of disclosing the present invention is to protect all technical improvements within the scope of the present invention.

[0026] Combined with appendix Figures 1-7 An automatic feeding device for printing paper bags includes a front support platform 1, two paper bag boxes 2 are installed on the front support platform 1, a rotating mechanism is installed on the front support platform 1, an air pump mechanism is installed on the rotating mechanism, a printing mechanism is installed on the front support platform 1 above the rotating mechanism, and a positioning mechanism is installed on the front support platform 1.

[0027] A rear support plate 104 is fixed behind the front support platform 1. An L-shaped positioning plate 101 is fixed to the left front end of the upper surface of the rear support plate 104. The L-shaped positioning plate 101 opens forward, which makes it easy to put the paper bag box 2 into the L-shaped positioning plate 101. A central groove 102 is opened on the right side of the front side of the rear support plate 104. The cross box 302 is located in the central groove 102. The central groove 102 can provide space for the rotation of the cross box 302. A positioning groove 103 is opened on the rear support plate 104 below the central groove 102. The positioning groove 103 passes through the right side of the rear support plate 104, which makes it easy to put the paper bag box 2 in.

[0028] Both paper bag boxes 2 are boxes with openings at both ends and top. The two paper bag boxes 2 are placed in the L-shaped positioning plate 101 and the positioning groove 103 respectively.

[0029] The rotating mechanism includes a motor 3, which is fixed on the upper surface of the rear support plate 104. A rotating shaft 301 is connected to the output shaft on the front side of the motor 3 via a coupling, and a cross housing 302 is fixed on the rotating shaft 301.

[0030] The cross-shaped box 302 is composed of four pipes that are perpendicularly connected to each other. A fixing rod 304 is fixed inside each of the four pipes of the cross-shaped box 302. A first printing mold 303 is fixed to the outer end of the fixing rod 304. An installation hole 305 is opened on the front side of the cross-shaped box 302.

[0031] The air pump mechanism includes an air pump 5, which is fixed on the upper surface of the front support platform 1. The air pump 5 has connecting pipes 501 on the left air inlet and the right air outlet respectively. A suction pipe 502 is vertically connected and fixed on the left connecting pipe 501. A sealing plate 506 is fixed at the lower rear end of the suction pipe 502. A sealing cover 505 is fixed at the rear end of the sealing plate 506.

[0032] The suction pipe 502 is rotatably connected to the mounting hole 305. The first jet pipe 503 is vertically connected and fixed to the connecting pipe 501 on the right side of the air pump 5. The second jet pipe 504 is vertically connected and fixed to the first jet pipe 503. The air outlet of the second jet pipe 504 is directly facing the right side of the cross box 302. The ink on the paper bag can be quickly dried by blowing air.

[0033] The printing mechanism includes two mounting plates 4, which are symmetrically fixed to the front support platform 1 on the front side of the middle groove 102 and the rear support plate 104 on the rear side of the middle groove 102. The upper ends of the two mounting plates 4 are rotatably connected to a fixed shaft 401. A rotating roller 402 is fixed in the middle of the fixed shaft 401. A push block 403 is fixed directly below the side of the rotating roller 402. A second printing mold 404 is fixed on the side of the rotating roller 402 in front of the push block 403.

[0034] The positioning mechanism includes two support plates 6, which are symmetrically fixed to the front support platform 1 on the front right side of the L-shaped positioning plate 101 and the rear support plate 104 on the rear right side of the L-shaped positioning plate 101. An arc-shaped positioning arc plate 601 is formed above the support plates 6. A positioning groove 602 is provided on the inner side of the positioning arc plate 601. The positioning groove 602 is inclined inward, that is, the distance between the two positioning grooves 602 decreases continuously as the height increases. In this way, when the paper bag moves in the positioning arc plate 601, it can be pushed to the predetermined position by the positioning groove 602.

[0035] The outer ends of the second printing mold 404 and the first printing mold 303 are arc-shaped, so that when the second printing mold 404 and the first printing mold 303 come into contact, the arc surfaces can press against each other and rotate synchronously for printing. Alternatively, printing can be performed directly above the cross box 302 using rollers or embossing.

[0036] The automatic feeding device for printing paper bags, as described above, involves vertically stacking paper bags together and placing them in a paper bag box 2. The paper bag box 2 is then pushed from the upper surface of the front support platform 1 into an L-shaped positioning plate 101. The motor 3 drives the cross-shaped box body 302 to rotate on the suction pipe 502 via the rotating shaft 301. Simultaneously, the air pump 5 starts, creating negative pressure in the middle of the cross-shaped box body 302 through the connecting air pipe 501 and the suction pipe 502 on the left side. This negative pressure is transmitted to the outer ends of the four pipes constituting the cross-shaped box body 302. As the cross-shaped box body 302 rotates, the outer ends of the four pipes passing the right end of the paper bag box 2 within the L-shaped positioning plate 101 forcefully draw in air, causing the contents of the paper bag box 2 to be drawn out. The densely arranged paper bags are attracted to the outer ends of the four pipes constituting the cross-shaped box 302, which are tightly attached to the first printing mold 303. The paper bags then continue to rotate upwards along with the outer ends of the pipes constituting the cross-shaped box 302. When passing the positioning groove 602 at the lower end of the positioning arc plate 601, the positioning groove 602, which narrows inwards, pushes the outer ends of the four pipes constituting the cross-shaped box 302 to attract the front and rear sides of the paper bags, adjusting their positions. Then, the outer ends of the pipes constituting the cross-shaped box 302, carrying the attracted paper bags, rotate to the top. The paper bags first contact the push block 403, which pushes the right side of the paper bags attracted by the outer ends of the pipes constituting the cross-shaped box 302, adjusting the paper bags left and right to be positioned within the cross-shaped box. The four pipes of body 302 are positioned at designated locations on their outer ends. Then, the four pipes forming the cross-shaped box 302 contact the push block 403. As the outer ends of the pipes forming the cross-shaped box 302 continue to rotate to the right, the push block 403 is continuously pushed to rotate. The push block 403 drives the rotating roller 402 and the second printing mold 404 to rotate together. The second printing mold 404, at the outer end of the pipes forming the cross-shaped box 302, also begins to contact the first printing mold 303. The outer arc surface of the second printing mold 404 and the outer arc surface of the first printing mold 303 are in close contact for printing. After the four pipes forming the cross-shaped box 302 separate from the push block 403, the second printing mold 404 and the first printing mold 303 have completed contact and printing. After block 403 separates from cross-shaped box 302, push block 403 can automatically return to its original position under gravity. When the four pipes constituting cross-shaped box 302 drive the paper bag to rotate to the right end, air pump 5 can spray the extracted air through the connecting air pipe 501, the first air pipe 503 and the second air pipe 504 on the surface of the printed paper bag to accelerate the evaporation of ink on the paper bag. When the four pipes constituting cross-shaped box 302 drive the paper bag to rotate to the bottom, sealing plate 506 can seal the bottom pipe of the four pipes constituting cross-shaped box 302. After the negative pressure disappears, the printed paper bag with the ink already evaporated and dried can automatically fall into the paper bag box 2 in the positioning groove 103 under gravity.

[0037] The parts of this invention not described in detail are prior art. Although the invention has been specifically shown and introduced in conjunction with preferred embodiments, there are many methods and approaches to implement this technical solution. The above description is only a preferred embodiment of the invention. However, those skilled in the art should understand that various changes in form and detail can be made to the invention without departing from the spirit and scope of the invention as defined in the appended claims, and all such changes are within the scope of protection of the invention.

Claims

1. An automatic feeding device for printing paper bags, comprising a front support table (1), characterized in that: Two paper bag boxes (2) are installed on the front support platform (1). A rotating mechanism is installed on the front support platform (1). An air pump mechanism is installed on the rotating mechanism. A printing mechanism is installed on the front support platform (1) above the rotating mechanism. A positioning mechanism is installed on the front support platform (1). A rear support plate (104) is fixed behind the front support platform (1). An L-shaped positioning plate (101) is fixed on the left side of the front surface of the rear support plate (104). A central groove (102) is opened on the right side of the front side of the rear support plate (104). A positioning groove (103) is opened on the rear support plate (104) below the central groove (102). Both paper bag boxes (2) are boxes with openings at both ends and top. The two paper bag boxes (2) are placed in the L-shaped positioning plate (101) and the positioning groove (103) respectively. The rotating mechanism includes a motor (3), which is fixed on the upper surface of the rear support plate (104). A rotating shaft (301) is connected to the output shaft on the front side of the motor (3) via a coupling. A cross housing (302) is fixed on the rotating shaft (301). The cross-shaped box (302) is composed of four pipes that are perpendicular to each other. A fixing rod (304) is fixed in each of the four pipes of the cross-shaped box (302). A first printing mold (303) is fixed at the outer end of the fixing rod (304). An installation hole (305) is opened on the front side of the cross-shaped box (302). The air pump mechanism includes an air pump (5), which is fixed on the upper surface of the front support platform (1). The air pump (5) has a connecting air pipe (501) connected to the air inlet end on the left side and the air outlet end on the right side respectively. A suction pipe (502) is vertically connected and fixed to the connecting air pipe (501) on the left side. A sealing plate (506) is fixed to the lower rear end of the suction pipe (502). A sealing cover (505) is fixed to the rear end of the sealing plate (506). The suction pipe (502) is rotatably connected in the mounting hole (305). The first jet pipe (503) is vertically connected and fixed on the connecting pipe (501) on the right side of the air pump (5). The second jet pipe (504) is vertically connected and fixed on the first jet pipe (503).

2. The automatic feeding device for printing packaging paper bags according to claim 1, characterized in that: The printing mechanism includes two mounting plates (4), which are symmetrically fixed to the front support platform (1) on the front side of the middle groove (102) and the rear support plate (104) on the rear side of the middle groove (102). The upper ends of the two mounting plates (4) are rotatably connected to a fixed shaft (401). A rotating roller (402) is fixed in the middle of the fixed shaft (401). A push block (403) is fixed directly below the side of the rotating roller (402). A second printing mold (404) is fixed on the side of the rotating roller (402) in front of the push block (403).

3. The automatic feeding device for printing packaging paper bags according to claim 1, characterized in that: The positioning mechanism includes two support plates (6). The two support plates (6) are symmetrically fixed to the front support platform (1) on the front right side of the L-shaped positioning plate (101) and the rear support plate (104) on the rear right side of the L-shaped positioning plate (101). An arc-shaped positioning arc plate (601) is formed on the top of the support plate (6). A positioning groove (602) is provided on the inner side of the positioning arc plate (601).

4. The automatic feeding device for printing packaging paper bags according to claim 2, characterized in that: The outer ends of the second printing mold (404) and the first printing mold (303) are arc-shaped.

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