Slitting device for packaging bag

Abstract

The utility model relates to a slitting device for packaging bags, which comprises a working frame, a driving roller and a driven roller are respectively and rotatably connected onto the working frame, a cutting knife is fixedly connected onto the outer curved surface of the driven roller, a cutting groove is arranged on the outer curved surface of the driving roller, a servo motor is mounted on the working frame, and the servo motor is connected with the driving roller. A driving mechanism for driving the driven roller is arranged between the driving roller and the driven roller; an edge cutting assembly is arranged on the working frame; a pressing assembly is arranged on the working frame; a discharging box is arranged below the driving roller and the driven roller, and waste recycling mechanisms are arranged on the front side and the rear side of the discharging box. According to the slitting device for the packaging bag, after the pressing roller presses the packaging bag, the cutting wheel conducts edge cutting and trimming on the front side and the rear side of the packaging bag, the packaging bag subjected to edge cutting and trimming is cut off by the cutting knife on the driven roller, and therefore the slitting device for the packaging bag can conduct edge cutting, trimming and cutting-off treatment on the packaging bag at the same time, and the production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to a packaging bag, in particular to a cutting device for the packaging bag. Background Art

[0002] Packaging bags are containers used to hold, protect, and transport various items. They can be made from a variety of materials, including plastic, paper, cloth, and aluminum foil, and come in a variety of shapes, sizes, and designs to suit different uses and needs. During the production process, packaging machines are used to package the products. Before packaging, the bags on the assembly line need to be cut.

[0003] However, existing packaging bag cutting devices for packaging machines require the conveying of packaging bags to be temporarily stopped when cutting packaging bags, resulting in low work efficiency. To address this problem, a packaging bag cutting device for packaging machines, with publication number CN217575927U, is disclosed. A cutting groove is formed on the outer wall of the active roller, and a cutting blade corresponding to and adapted to the cutting groove is fixedly connected to the outer wall of the driven roller. The active roller and the driven roller rotate synchronously in opposite directions through the meshing transmission of two annular teeth. Therefore, when the active roller conveys the packaging bag strip, the cutting blade intermittently inserts into the inner cavity of the cutting groove, thereby cutting the packaging bag strip, thereby effectively improving the cutting efficiency of the device.

[0004] However, this patent can only cut the packaging bag but cannot trim the side of the packaging bag. To address this problem, we propose a slitting device for packaging bags. Utility Model Content

[0005] The utility model provides a cutting device for packaging bags, which solves the above problems existing in the use process of the prior art.

[0006] The technical solution of the utility model is achieved as follows: a slitting device for packaging bags, comprising a working frame, a driving roller and a driven roller are rotatably connected to the working frame, a cutting knife is fixedly connected to the outer curved surface of the driven roller, a cutting groove corresponding to the cutting knife is formed on the outer curved surface of the driving roller, a servo motor for driving the driving roller is installed on the working frame, and a driving mechanism for driving the driven roller is provided between the driving roller and the driven roller;

[0007] The working frame is provided with a trimming assembly;

[0008] A pressing assembly is provided on the working frame;

[0009] A discharge box is provided below the active roller and the driven roller, a discharge trough is provided through the discharge box, and waste recovery mechanisms are provided on the front and rear sides of the discharge box.

[0010] The present utility model is further configured as follows: the driving mechanism includes an annular tooth;

[0011] The annular teeth are provided at the ends of the active roller and the driven roller, and the adjacent annular teeth on the same side are meshed with each other.

[0012] The present invention is further configured as follows: the trimming assembly includes two cutting wheels;

[0013] The upper side of the work frame is rotatably connected to a rotating shaft, and the cutting wheel is symmetrically mounted on the rotating shaft;

[0014] The driving roller is provided with an annular cutting groove symmetrically arranged front to back, and the end of the cutting wheel extends into the annular cutting groove;

[0015] The rotating shaft is provided with a transmission assembly for driving the cutting wheel to rotate.

[0016] The utility model is further configured as follows: the transmission assembly includes two transmission gears;

[0017] The transmission gear is symmetrically arranged on the rotating shaft and meshes with the annular teeth on the active roller.

[0018] The present invention is further configured as follows: the pressing assembly includes two pressing rollers;

[0019] The pressing roller is rotatably connected to the working frame and is symmetrically pressed on the active roller.

[0020] The utility model is further configured as follows: the waste recovery mechanism includes two suction cylinders;

[0021] The suction cylinders are symmetrically arranged on the front and rear sides of the discharge box, a recovery box is arranged in the work frame, a suction pipe is fixedly connected to the recovery box, and the two suction cylinders are commonly connected to the suction pipe;

[0022] A negative pressure fan is installed on the recovery box.

[0023] The present invention is further configured as follows: a blade is fixedly provided at the inlet of the suction cylinder.

[0024] In summary, the beneficial effects of the present invention are:

[0025] After the compression roller compresses the packaging bag, the cutting wheel trims the front and back sides of the packaging bag, and the trimmed packaging bag is then cut by the cutting knife on the driven roller, so that the packaging bag slitting device can simultaneously perform trimming and cutting processing on the packaging bag, thereby improving production efficiency;

[0026] The waste generated by trimming is cut off by the cutting knife and sucked into the recycling box by the vacuum pump, thus preventing the waste from being mixed into the packaging bag. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0028] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0029] Figure 2 This is a structural diagram of the utility model from another perspective;

[0030] Figure 3 It is a schematic diagram of the connection structure between the discharge box and the suction cylinder in the utility model.

[0031] Numbers in the figure: 11, working frame; 12, driving roller; 13, driven roller; 14, discharge box; 15, cutting knife; 16, ring gear; 17, cutting wheel; 18, rotating shaft; 19, annular cutting groove; 20, transmission gear; 21, pressing roller; 22, suction cylinder; 23, recovery box; 24, suction pipe; 25, negative pressure fan; 26, cutting groove; 27, blade; 28, servo motor; 29, discharge chute. DETAILED DESCRIPTION

[0032] The following is a combination of the appended examples of the present invention Figure 1-3 , clearly and completely describes the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0033] Example:

[0034] like Figures 1 to 3As shown, a slitting device for packaging bags includes a working frame 11, on which a driving roller 12 and a driven roller 13 are rotatably connected respectively, and a servo motor 28 for driving the driving roller 12 is installed on the working frame 11, and a driving mechanism for driving the driven roller 13 is provided between the driving roller 12 and the driven roller 13, and the specific structure of the driving mechanism is as follows: the driving mechanism includes an annular gear 16, and the annular gear 16 is provided at the end of the driving roller 12 and the driven roller 13, and the adjacent annular gears 16 on the same side are meshed with each other. When the servo motor 28 drives the driving roller 12 to rotate, the driven roller 13 follows the driving roller 12 through the annular gear 16 to rotate in the same direction at the same speed.

[0035] The working frame 11 is provided with a trimming assembly for trimming the side edges of the packaging bags. The specific structure of the trimming assembly is as follows: the trimming assembly includes a cutting wheel 17, and the number of the cutting wheels 17 is two. The upper side of the working frame 11 is rotatably connected to a rotating shaft 18, and the cutting wheel 17 is symmetrically installed on the rotating shaft 18 front and back. An annular cutting groove 19 is symmetrically opened front and back on the active roller 12, and the end of the cutting wheel 17 extends into the annular cutting groove 19, and a transmission gear 20 is symmetrically provided front and back on the rotating shaft 18. The transmission gear 20 is engaged with the annular tooth 16 on the active roller 12, so that when the active roller 12 rotates, it can drive the cutting wheel 17 to rotate. When the front and rear sides of the packaging bag pass through the cutting wheel 17, the cutting wheel 17 performs trimming processing on the packaging bag, so that the size of the packaging bag meets the standard required for production.

[0036] In addition, a pressing assembly for pressing the packaging bag is provided on the working frame 11. The specific structure of the pressing assembly is as follows: the pressing assembly includes a pressing roller 21. The number of the pressing rollers 21 is two. The pressing rollers 21 are rotatably connected to the working frame 11 and are symmetrically pressed on the active roller 12. When the packaging bag is transferred to the active roller 12, the pressing roller 21 is pressed on the surface of the packaging bag, thereby preventing the packaging bag from shifting in position during transportation and cutting, resulting in uneven incisions.

[0037] A cutting knife 15 for cutting packaging bags is fixedly connected to the outer curved surface of the driven roller 13, and a cutting groove 26 corresponding to the cutting knife 15 is opened on the outer curved surface of the active roller 12. When the cutting knife 15 rotates to be inserted into the cutting groove 26, the packaging bag after trimming can be cut.

[0038] In addition, a discharge box 14 is provided below the active roller 12 and the driven roller 13. A discharge trough 29 is provided through the discharge box 14. The packaging bags cut by the cutting knife 15 fall and pass through the discharge trough 29 and fall onto the packaging machine (not shown in the figure) below the discharge trough 29.

[0039] The front and rear sides of the discharge box 14 are provided with a waste recovery mechanism, and the specific structure of the waste recovery mechanism is as follows: the waste recovery mechanism includes two suction cylinders 22;

[0040] The suction cylinder 22 is symmetrically arranged on the front and rear sides of the discharge box 14. A recovery box 23 is provided in the work frame 11. A suction pipe 24 is fixedly connected to the recovery box 23. The two suction cylinders 22 are commonly connected to the suction pipe 24. A negative pressure fan 25 is installed on the recovery box 23.

[0041] When the cutting knife 15 cuts the packaging bag, it also cuts off the waste generated by trimming. The cut packaging bag falls into the discharge box 14, and the waste is sucked into the recovery box 23 by the negative pressure fan 25 for waste recycling. A blade 27 is fixed at the entrance of the suction cylinder 22. When the waste is sucked into the suction cylinder 22, the blade 27 cuts it into smaller waste, making it easier to be sucked into the suction cylinder 22. Through the above mechanism, the work site is kept clean and tidy, and waste is prevented from mixing into the cut packaging bags.

[0042] It should also be pointed out that the terms indicated in the present invention, such as: "front", "rear", "vertical", "horizontal", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as limiting the scope of protection of the present invention.

[0043] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A slitting device for packaging bags, comprising a working frame (11), characterized in that: The working frame (11) is rotatably connected to a driving roller (12) and a driven roller (13), a cutting knife (15) is fixedly connected to the outer curved surface of the driven roller (13), a cutting groove (26) corresponding to the cutting knife (15) is provided on the outer curved surface of the driving roller (12), a servo motor (28) for driving the driving roller (12) is installed on the working frame (11), and a driving mechanism for driving the driven roller (13) is provided between the driving roller (12) and the driven roller (13); The working frame (11) is provided with a trimming assembly; A pressing assembly is provided on the working frame (11); A discharge box (14) is provided below the active roller (12) and the driven roller (13), a discharge trough (29) is provided through the discharge box (14), and waste recovery mechanisms are provided on the front and rear sides of the discharge box (14).

2. The packaging bag cutting device according to claim 1, characterized in that: The driving mechanism includes an annular tooth (16); The annular teeth (16) are provided at the ends of the active roller (12) and the driven roller (13), and the adjacent annular teeth (16) on the same side mesh with each other.

3. The packaging bag slitting device according to claim 2, characterized in that: The trimming assembly comprises a cutting wheel (17), and the number of the cutting wheels (17) is two; The upper side of the working frame (11) is rotatably connected to a rotating shaft (18), and the cutting wheel (17) is symmetrically mounted on the rotating shaft (18). The active roller (12) is provided with an annular cutting groove (19) symmetrically arranged front and back, and the end of the cutting wheel (17) extends into the annular cutting groove (19); The rotating shaft (18) is provided with a transmission assembly for driving the cutting wheel (17) to rotate.

4. The packaging bag slitting device according to claim 3, characterized in that: The transmission assembly includes a transmission gear (20), and the number of the transmission gears (20) is two; The transmission gear (20) is symmetrically arranged on the rotating shaft (18) in a front-to-rear manner and meshes with the annular gear (16) on the active roller (12).

5. The packaging bag slitting device according to claim 1, characterized in that: The pressing assembly comprises a pressing roller (21), and the number of the pressing rollers (21) is two; The pressing roller (21) is rotatably connected to the working frame (11) and is symmetrically pressed on the active roller (12).

6. The packaging bag slitting device according to claim 1, characterized in that: The waste recycling mechanism comprises a suction cylinder (22), and the number of the suction cylinders (22) is two; The suction cylinders (22) are symmetrically arranged at the front and rear sides of the discharge box (14); a recovery box (23) is arranged in the working frame (11); a suction pipe (24) is fixedly connected to the recovery box (23); and the two suction cylinders (22) are commonly connected to the suction pipe (24); A negative pressure fan (25) is installed on the recovery box (23).

7. The packaging bag slitting device according to claim 6, characterized in that: A blade (27) is fixedly provided at the inlet of the suction cylinder (22).

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