Plastic bag printing machine with cutting function

By combining the motor-driven shaft and gear transmission system with the design of the feeding chute and cutting chute, the problem of complex cutting components in existing plastic bag printing machines has been solved, achieving efficient and precise cutting and automated collection.

CN224183957UActive Publication Date: 2026-05-01RENQIU QIANXI PAPER PLASTIC PACKAGING CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
RENQIU QIANXI PAPER PLASTIC PACKAGING CO LTD
Filing Date
2025-06-06
Publication Date
2026-05-01

AI Technical Summary

Technical Problem

Existing plastic bag printing machines have too many cutting components, making operation complex and difficult to achieve efficient and precise cutting functions.

Method used

The machine uses a motor-driven shaft, which rotates the cutting blade at high speed through a gear transmission system. Combined with the design of the feeding chute and the cutting chute, it ensures the accuracy and stability of the cutting. At the same time, it uses a blower and a collection device to achieve precise material conveying and collection.

Benefits of technology

It enables efficient and precise cutting and automated collection of plastic bags, improving the operational stability and convenience of the equipment.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the technical field of plastic bags, and provides a plastic bag printing machine with a cutting function, the plastic bag printing machine comprises a base, a support is fixedly connected to the top of the base, printing equipment is fixedly connected to the side face of the support, a cutting device is arranged at the top of the base, and the bottom of a fixing plate is fixedly connected to the top of the base. The side face of the fixing plate is fixedly connected with a motor, an output shaft of the motor is fixedly connected with a rotating shaft, and the circumferential face of the rotating shaft is fixedly connected with a half gear A. The top of the base is fixedly connected with a fixing rod, the side face of the fixing rod is rotationally connected with a rotating shaft, and the circumferential face of the rotating shaft is fixedly connected with a gear. And a cutting knife is fixedly connected to the circumferential surface of the rotating shaft. The cutting device is used for driving a rotating shaft through a motor. According to the technical scheme, the problem that a plastic bag cannot be cut after being printed in the prior art is solved.
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Description

A plastic bag printing machine with cutting function Technical Field

[0001] This disclosure relates to the field of plastic bag technology, and more specifically, to a plastic bag printing machine with a cutting function. Background Technology

[0002] Plastic bags are a common packaging material, usually made of plastic materials such as polyethylene and polypropylene. They have advantages such as being lightweight, tough, waterproof, and moisture-proof. Plastic bags are widely used in daily life, such as shopping bags, garbage bags, and food packaging.

[0003] A plastic bag printing machine with cutting function, disclosed in the public announcement (Publication No.: CN216300492U), includes a printing machine body and a placement block. The printing machine body is equipped with a first L-shaped plate and a second L-shaped plate. A connecting rod and a lead screw are provided between the first and second L-shaped plates, with both ends of the connecting rod connected to the first and second L-shaped plates respectively. The two ends of the lead screw are rotatably connected to the first and second L-shaped plates respectively. The placement block is slidably sleeved on the connecting rod and threadedly sleeved on the lead screw. A driving component for driving the lead screw to rotate is installed on the first or second L-shaped plate. A winding component for winding plastic bags is installed on the side of the second L-shaped plate near the first L-shaped plate. A cutting component for cutting plastic bags is installed on the second L-shaped plate. This application solves the problem of inconvenient cutting of plastic bags and increases the practicality of the printing machine.

[0004] The components such as the first L-shaped plate and the second L-shaped plate in the above application work together to solve the problem of inconvenience in cutting plastic bags. However, the above components are too numerous and the operation is too complicated. Therefore, we propose a plastic bag printing machine with cutting function. Summary of the Invention

[0005] This disclosure proposes a plastic bag printing machine with a cutting function, which solves a problem in the related technology of plastic bag printing machines with a cutting function.

[0006] According to one aspect, at least one embodiment of this disclosure provides a plastic bag printing machine with a cutting function, comprising: a base, a support fixedly connected to the top of the base, a printing device fixedly connected to the side of the support, and a cutting device disposed on the top of the base.

[0007] The cutting device includes a fixed plate, the bottom of which is fixedly connected to the top of a base. A motor is fixedly connected to the side of the fixed plate, and a rotating shaft is fixedly connected to the output shaft of the motor. A half gear A is fixedly connected to the circumferential surface of the rotating shaft. A fixed rod is fixedly connected to the top of the base, and a rotating shaft is rotatably connected to the side of the fixed rod. A gear is fixedly connected to the circumferential surface of the rotating shaft, and a cutting blade is fixedly connected to the circumferential surface of the rotating shaft. The function of this cutting device is to use a motor to drive the rotating shaft, which in turn causes the cutting blade to rotate at high speed through a gear transmission system, thereby completing the cutting task. The motor provides power, the gear system transmits power, and the cutting blade performs the cutting operation. This design enables the cutting device to complete the cutting work efficiently and accurately.

[0008] For example, in at least one embodiment of this disclosure, a plastic bag printing machine with a cutting function further includes: a material feeding trough is provided on the top of the base, and the material feeding trough is located directly below the printing equipment. The main function of the material feeding trough is to collect and guide the material to be cut, ensuring the efficient operation of the equipment and providing a convenient channel for subsequent processing.

[0009] The base has a cutting groove on its top, the diameter of which is the same as the diameter of the cutting blade. The main function of the cutting groove is to help position, guide, and support the material to be cut, ensuring the accuracy and stability of the cutting process.

[0010] The half-gear A meshes with the gear, and there is a gap between the circumferential surface of the gear and the top of the base. The function of half-gear A meshing with the gear is to effectively transmit the power of the motor to the cutting blade through the gear transmission system, and to adjust the speed and direction of movement through the combination of gears. The meshing of the gears ensures the stability, accuracy, and efficiency of the cutting operation.

[0011] A reset torsion spring is fixedly connected to the circumferential surface of the rotating shaft, and one end of the reset torsion spring is fixedly connected to the side of the fixed rod. The function of fixing the rotating shaft to the reset torsion spring is to provide elastic force to realize the reset function of the rotating shaft, ensuring that the mechanical parts can return to the predetermined position after operation, thereby increasing the stability of the system and the convenience of operation.

[0012] The circumferential surface of the rotating shaft is elastically connected to the fixed rod via a return torsion spring, which is initially in a relaxed state. The function of the return torsion spring in its initially relaxed state is primarily to ensure that the rotating shaft does not experience additional resistance when there is no external force, while simultaneously providing appropriate restoring force when needed, allowing the system to operate smoothly and reliably.

[0013] According to another aspect, at least one embodiment of this disclosure also provides a plastic bag printing machine with a cutting function, comprising: a collecting device provided on the circumferential surface of the rotating shaft, the collecting device including a half gear B, the side of the half gear B being fixedly inserted through the circumferential surface of the rotating shaft; a groove formed on the top of the base, a blower fixedly connected to the bottom inner side of the groove, a switch provided on the side of the blower; a limiting groove formed on the inner side of the material discharge trough; an air duct fixedly connected to the side of the blower, an air outlet nozzle fixedly connected to one end of the air duct; and a toothed rod slidably connected to the top of the base. The entire system functions by using the rotating shaft to drive the collecting device, collecting the material in the system, and then using the airflow generated by the air duct and blower to deliver the printed plastic bags to a designated location. The blower provides power support, while components such as the limiting groove and toothed rod help to precisely control the flow, conveying, and collection path of the material.

[0014] For example, in at least one embodiment of this disclosure, a plastic bag printing machine with a cutting function further includes: the rack meshing with a half gear B, and a collection box slidably connected to the side of the base. This design uses the half gear B to drive the rack in horizontal movement to start the blower.

[0015] One end of the rack is fixedly connected to a push rod, and the switch is located on the displacement trajectory of the push rod. This design allows the blower to be started by positioning the switch on the displacement trajectory of the push rod.

[0016] A return spring is fixedly connected to the circumferential surface of the switch, and one end of the return spring is fixedly connected to the side of the blower. The function of the return spring is to ensure that the switch can automatically return to its initial position after each operation, thereby enhancing the stability and reliability of the equipment.

[0017] The working principle and beneficial effects of this disclosure are as follows:

[0018] 1. In this disclosure, the motor, rotating shaft, half gear A, gear, and cutting blade work together to achieve the following: when the motor is started, the motor drives the rotating shaft to rotate, the rotating shaft drives the half gear A to rotate, the half gear A drives the gear meshing with it to rotate, the gear rotates to drive the rotating shaft to rotate, the rotating shaft rotates to drive the cutting blade to rotate, and the cutting blade rotates quickly to mesh with the cutting groove, thereby achieving the effect of automatically cutting the printed plastic bag.

[0019] 2. This disclosure utilizes the coordinated operation of components such as a motor, half-gear B, rack, blower, collection box, and push rod to achieve the following: When the motor is started, the motor's rotating shaft rotates, which in turn drives half-gear B to rotate. Half-gear B's rotation causes the meshing rack to move horizontally, which in turn drives the push rod to move horizontally. The push rod's horizontal movement then opens a switch, activating the blower. The blower transports air from the duct to the outlet nozzle, agitating the cut plastic bags and conveying them through a confinement groove to the collection box for collection. This achieves precise control over the flow, transport, and collection path of the materials. Attached Figure Description

[0020] The preferred embodiments will now be described in a clear and easy-to-understand manner, with reference to the accompanying drawings, to further explain the above-mentioned characteristics, technical features, advantages, and implementation methods of this disclosure.

[0021] Figure 1 is a schematic diagram of the structure of the main view of this disclosure;

[0022] Figure 2 is a side view of the structure of this disclosure;

[0023] Figure 3 is a schematic diagram of the cutting device of this disclosure;

[0024] Figure 4 is a schematic diagram of the structure of the collection device disclosed herein;

[0025] Figure 5 is a schematic diagram of the side section of this disclosure.

[0026] In the diagram: 1. Base; 2. Support; 3. Printing equipment; 4. Cutting device; 5. Collection device; 41. Fixing plate; 42. Motor; 43. Rotating shaft; 44. Half gear A; 45. Fixing rod; 46. Rotating shaft; 47. Gear; 48. Cutting blade; 49. Feed chute; 410. Cutting groove; 411. Return torsion spring; 51. Half gear B; 52. Groove; 53. Blower; 54. Switch; 55. Restriction groove; 56. Air duct; 57. Air outlet nozzle; 58. Gear rack; 59. Collection box; 510. Return spring; 511. Push rod. Detailed Implementation

[0027] To more clearly illustrate the technical solutions in the embodiments of this disclosure or the prior art, the specific implementation methods of this disclosure will be described below with reference to the accompanying drawings. Obviously, the drawings described below are merely some embodiments of this disclosure. For those skilled in the art, other drawings and other implementation methods can be obtained based on these drawings without creative effort.

[0028] To keep the drawings concise, each drawing only schematically shows the parts relevant to the disclosure; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of components with the same structure or function is schematically shown, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0029] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure based on the specific circumstances.

[0030] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0031] Example 1

[0032] As shown in Figures 1 to 5, a plastic bag printing machine with a cutting function is shown in one embodiment of the present disclosure, including a base 1, a support 2 fixedly connected to the top of the base 1, a printing device 3 fixedly connected to the side of the support 2, and a cutting device 4 provided on the top of the base 1.

[0033] The cutting device 4 includes a fixed plate 41, the bottom of which is fixedly connected to the top of the base 1. A motor 42 is fixedly connected to the side of the fixed plate 41, and a rotating shaft 43 is fixedly connected to the output shaft of the motor 42. A half gear A44 is fixedly connected to the circumferential surface of the rotating shaft 43. A fixed rod 45 is fixedly connected to the top of the base 1, and a rotating shaft 46 is rotatably connected to the side of the fixed rod 45. A gear 47 is fixedly connected to the circumferential surface of the rotating shaft 46, and a cutting blade 48 is fixedly connected to the circumferential surface of the rotating shaft 46. The function of the cutting device 4 is to use the motor 42 to drive the rotating shaft 43, and through the gear 47 transmission system, to make the cutting blade 48 rotate at high speed, thereby completing the cutting task of the object. The motor 42 provides power, the gear 47 system transmits power, and the cutting blade 48 performs the cutting operation. This design enables the cutting device 4 to complete the cutting work efficiently and accurately.

[0034] In some examples, a material feeding trough 49 is provided on the top of the base 1, and the material feeding trough 49 is located directly below the printing equipment 3. The main function of the material feeding trough 49 is to collect and guide the material to be cut, ensuring the efficient operation of the equipment and providing a convenient channel for subsequent processing.

[0035] A cutting groove 410 is provided on the top of the base 1. The main function of the cutting groove 410 is to help position, guide and support the material to be cut, so as to ensure the accuracy and stability of the cutting process.

[0036] Half gear A44 meshes with gear 47, and the diameter of the cutting groove 410 is the same as the diameter of the cutting blade 48. The meshing of half gear A44 and gear 47 effectively transmits the power of motor 42 to cutting blade 48 through the gear 47 transmission system, and the speed and direction of movement can be adjusted through the combination of gears 47. The meshing of gears 47 ensures the stability, accuracy, and efficiency of the cutting operation.

[0037] A reset torsion spring 411 is fixedly connected to the circumferential surface of the rotating shaft 46, and there is a gap between the circumferential surface of the gear 47 and the top of the base 1. The function of the fixed connection between the rotating shaft 46 and the reset torsion spring 411 is to provide elastic force to realize the reset function of the rotating shaft 46, ensuring that the mechanical parts can return to the predetermined position after operation, thereby increasing the stability of the system and the convenience of operation.

[0038] A return torsion spring 411 is fixedly connected to the circumferential surface of the rotating shaft 46, and one end of the return torsion spring 411 is fixedly connected to the side of the fixed rod 45. The function of the return torsion spring 411 in the initial relaxed state is mainly to ensure that the rotating shaft 46 will not be subjected to additional resistance when there is no external force, and at the same time, it can provide appropriate restoring force when needed, so that the system can operate smoothly and reliably.

[0039] For example, as shown in Figures 1-5, when the motor 42 is started, the motor 42 drives the rotating shaft 43 to rotate. The rotation of the rotating shaft 43 drives the half gear A44 to rotate. The rotation of the half gear A44 drives the gear 47 that meshes with it to rotate. The rotation of the gear 47 drives the rotating shaft 46 to rotate. The rotation of the rotating shaft 46 drives the cutting blade 48 to rotate. The cutting blade 48 rotates quickly and meshes with the cutting groove 410 to cut the plastic bag. When the half gear A44 rotates to the toothless position, the rotating shaft 46 rotates back to its original position through the elastic force of the return torsion spring 411. The return of the rotating shaft 46 drives the cutting blade 48 to rotate back to its original position.

[0040] Example 2

[0041] As shown in Figures 1-5, a plastic bag printing machine with a cutting function is illustrated in another embodiment of this disclosure. The technical solution is largely the same as that of Embodiment 1, so only the differences are described. These differences include: a collecting device 5 is provided on the circumferential surface of the rotating shaft 43; the collecting device 5 includes a half-gear B51, the side of which is fixedly inserted through the circumferential surface of the rotating shaft 43; a groove 52 is provided on the top of the base 1; a blower 53 is fixedly connected to the bottom inner side of the groove 52; a switch 54 is provided on the side of the blower 53; a limiting groove 55 is provided on the inner side of the material discharge trough 49; an air duct 56 is fixedly connected to the side of the blower 53; an air outlet nozzle 57 is fixedly connected to one end of the air duct 56; and a toothed rod 58 is slidably connected to the top of the base 1. The entire system works by using the rotating shaft 43 to drive the collecting device 5, collecting the material in the system, and then using the airflow generated by the air duct 56 and the blower 53 to deliver the printed plastic bags to a designated location. The blower 53 provides power support, while components such as the limiting groove 55 and the rack 58 help to precisely control the flow, conveying and collection path of materials.

[0042] In some examples, the design also includes a rack 58 meshing with a half gear B51, and a collection box 59 slidably connected to the side of the base 1. This design uses the half gear B51 to drive the rack 58 to move horizontally, thus starting the blower 53.

[0043] A push rod 511 is fixedly connected to one end of the rack 58, and a switch 54 is located on the displacement trajectory of the push rod 511. This design allows the blower 53 to be started by positioning the switch 54 on the displacement trajectory of the push rod 511.

[0044] A return spring 510 is fixedly connected to the circumferential surface of switch 54, and one end of the return spring 510 is fixedly connected to the side of blower 53. The function of the return spring 510 is to ensure that switch 54 can automatically return to its initial position after each operation, thereby enhancing the stability and reliability of the equipment.

[0045] For example, as shown in Figures 1-5, when motor 42 is started, the rotating shaft 43 rotates. The rotating shaft 43 drives the half gear B51 to rotate, and the rotating half gear B51 drives the meshing rack 58 to move horizontally. The horizontal movement of the rack 58 drives the push rod 511 to move horizontally. The horizontal movement of the push rod 511 pushes the switch 54 to open, and the switch 54 opens to start the blower 53. The blower 53 starts and transports air from the air duct 56 to the air outlet nozzle 57 for spraying. It blows the cut plastic bag and sends it through the limiting groove 55 to the collection box 59 for collection. When the half gear B51 rotates to the toothless position, the return spring 510 drives the switch 54 to return to its horizontal position through its own elasticity, and the blower 53 stops blowing air.

[0046] It should be noted that the above embodiments are only used to illustrate the technical solutions of this disclosure and are not intended to limit it. Although this disclosure has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this disclosure without departing from the spirit and scope of the technical solutions of this disclosure, and all such modifications and substitutions should be covered within the scope of the claims of this disclosure.

Claims

1. A plastic bag printing machine with a cutting function, characterized in that, The device includes a base (1), a bracket (2) fixedly connected to the top of the base (1), a printing device (3) fixedly connected to the side of the bracket (2), and a cutting device (4) provided on the top of the base (1). The cutting device (4) includes a fixing plate (41), the bottom of the fixing plate (41) fixedly connected to the top of the base (1), a motor (42) fixedly connected to the side of the fixing plate (41), a rotating shaft (43) fixedly connected to the output shaft of the motor (42), a half gear A (44) fixedly connected to the circumferential surface of the rotating shaft (43), a fixing rod (45) fixedly connected to the top of the base (1), a rotating shaft (46) rotatably connected to the side of the fixing rod (45), a gear (47) fixedly connected to the circumferential surface of the rotating shaft (46), and a cutting blade (48) fixedly connected to the circumferential surface of the rotating shaft (46).

2. A plastic bag printing machine with cutting function according to claim 1, characterized in that, The base (1) has a material feeding groove (49) on its top, and the material feeding groove (49) is located directly below the printing equipment (3).

3. A plastic bag printing machine with cutting function according to claim 2, characterized in that, The base (1) has a cutting groove (410) on its top, and the diameter of the cutting groove (410) is the same as the diameter of the cutting blade (48).

4. A plastic bag printing machine with cutting function according to claim 3, characterized in that, The half gear A (44) meshes with the gear (47), and there is a gap between the circumferential surface of the gear (47) and the top of the base (1).

5. A plastic bag printing machine with cutting function according to claim 4, characterized in that, A reset torsion spring (411) is fixedly connected to the circumferential surface of the rotating shaft (46), and one end of the reset torsion spring (411) is fixedly connected to the side of the fixing rod (45).

6. A plastic bag printing machine with cutting function according to claim 5, characterized in that, The circumferential surface of the rotating shaft (46) is elastically connected to the fixed rod (45) through a reset torsion spring (411), and the initial state of the reset torsion spring (411) is a relaxed state.

7. A plastic bag printing machine with cutting function according to claim 6, characterized in that, A collecting device (5) is provided on the circumferential surface of the rotating shaft (43). The collecting device (5) includes a half gear B (51). The side of the half gear B (51) is fixedly inserted through the circumferential surface of the rotating shaft (43). A groove (52) is provided on the top of the base (1). A blower (53) is fixedly connected to the bottom of the inner side of the groove (52). A switch (54) is provided on the side of the blower (53). A limiting groove (55) is provided on the inner side of the discharge trough (49). A duct (56) is fixedly connected to the side of the blower (53). An air nozzle (57) is fixedly connected to one end of the duct (56). A toothed rod (58) is slidably connected to the top of the base (1).

8. A plastic bag printing machine with cutting function according to claim 7, characterized in that, The rack (58) meshes with the half gear B (51), and a collection box (59) is slidably connected to the side of the base (1).

9. A plastic bag printing machine with cutting function according to claim 8, characterized in that, One end of the rack (58) is fixedly connected to a push rod (511), and the switch (54) is located on the displacement trajectory of the push rod (511).

10. A plastic bag printing machine with cutting function according to claim 9, characterized in that, A reset spring (510) is fixedly connected to the circumferential surface of the switch (54), and one end of the reset spring (510) is fixedly connected to the side of the blower (53).

Citation Information

Patent Citations

  • Plastic bag printing machine with cutting function

    CN216300492U