A paper bag machine

By integrating the first creasing mechanism, conveying device, and cutting mechanism into the paper bag machine, continuous processing of bag blanks is achieved, solving the problems of complex structure and misalignment in the existing technology, reducing costs and improving accuracy.

CN224465392UActive Publication Date: 2026-07-07WENZHOU RUIZHI PACKING MACHINERY

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
WENZHOU RUIZHI PACKING MACHINERY
Filing Date
2025-07-31
Publication Date
2026-07-07

AI Technical Summary

Technical Problem

Existing paper bag machines have complex structures, requiring conveyor belts and guide plates to prevent bags from shifting during transport, resulting in high manufacturing costs and inaccurate creasing operations.

Method used

The combination of the first creasing mechanism, conveying device and cutting mechanism is adopted. The bag blank is continuously processed by the synchronously driven pressure roller and conveying roller, eliminating the need for conveyor belt and guide plate, and completing the creasing, conveying and cutting directly on the frame.

Benefits of technology

It simplifies the structure of the paper bag machine, reduces manufacturing costs, and improves the accuracy and efficiency of the creasing operation.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN224465392U_ABST
    Figure CN224465392U_ABST
Patent Text Reader

Abstract

The utility model discloses a paper bag machine, including frame, be provided with first indentation mechanism, cutting mechanism and folding forming mechanism on the frame, the cutting mechanism place between first indentation mechanism and folding forming mechanism, still be provided with conveying device on the cutting mechanism, first indentation mechanism is to the bag body embryo material and is carried out the creasing processing, conveying device will the one end of bag body embryo material complete creasing processing forward delivery to cutting mechanism, cutting mechanism will the one end of bag body embryo material complete creasing processing and cut into single bag body unit. Make the paper bag machine by conveying device to the bag body embryo material between first indentation mechanism and cutting mechanism in the conveying process, because the bag body embryo material is integral, need not through the conveyer belt and convey, and also need not set up the guide plate in order to avoid appearing the deviation in the conveying process, simplify the structure of paper bag machine, reduce the manufacturing cost of paper bag machine.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] This utility model relates to the field of paper bag production equipment technology, and more specifically, it relates to a paper bag machine. Background Technology

[0002] Paper bags are non-toxic, odorless, and pollution-free, meeting national environmental protection requirements. They are high-strength and environmentally friendly, making them one of the most popular eco-friendly packaging materials internationally. Paper bags are commonly provided in shopping malls, shoe stores, clothing stores, and other retail locations to facilitate customers carrying their purchases. Furthermore, paper bags are widely used as file folders, envelopes, and other office supplies.

[0003] Paper bags are generally produced by cutting, creasing, and folding rolls of paper to create the bottom of the bag. The bottom of the paper bag needs to be creasing, which creates the creases used to make the bottom of the bag.

[0004] Existing paper bag machines first cut the bags into individual semi-finished products, which are then conveyed by a conveyor belt to the creasing station for creasing. In order to prevent the bags from shifting during the conveying process, a guide plate is also required. In other words, the existing paper bag machine requires a conveyor belt and a guide plate between the cutting station and the creasing station, which makes the structure of the existing paper bag machine relatively complex. Utility Model Content

[0005] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a paper bag machine.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A paper bag machine includes a frame, on which a first creasing mechanism, a cutting mechanism, and a folding and forming mechanism are arranged; the cutting mechanism is located between the first creasing mechanism and the folding and forming mechanism, and a conveying device is also provided on the cutting mechanism;

[0008] The first crease mechanism performs crease processing on the bag blank, and the conveying device conveys the crease-processed end of the bag blank forward to the cutting mechanism;

[0009] The cutting mechanism cuts one end of the bag blank that has undergone crease processing into a single bag unit.

[0010] The present invention is further provided in that a second indentation mechanism is provided between the first indentation mechanism and the conveying device.

[0011] The present invention further comprises: the first indentation mechanism including a first bottom roller, a first pressure roller and a first drive motor disposed opposite to each other;

[0012] The first bottom roller is provided with a first pressure groove, and the first pressure roller is provided with a first pressure plate that cooperates with the first pressure groove;

[0013] The first drive motor drives the first bottom roller and the first pressure roller to rotate synchronously, so that the first pressure plate and the first pressure groove cooperate to perform indentation processing on the bag blank to form fold marks.

[0014] The present invention further comprises: the second indentation mechanism including a second bottom roller, a second pressure roller and a second drive motor disposed opposite to each other;

[0015] The second bottom roller is provided with a second pressure groove, and the second pressure roller is provided with a second pressure plate that cooperates with the second pressure groove;

[0016] The second drive motor drives the second bottom roller and the second pressure roller to rotate synchronously, so that the second pressure plate and the second pressure groove cooperate to perform indentation processing on the bag blank material that has completed the folding and creasing processing to form storage marks.

[0017] The present invention further comprises: the conveying device including an upper conveying roller, a lower conveying roller and a third drive motor;

[0018] The third drive motor synchronously drives the upper and lower conveyor rollers to rotate, so that the upper and lower conveyor rollers cooperate to transport the bag blanks that have completed the embossing process to the cutting mechanism.

[0019] The present invention further includes: the cutting mechanism comprising an upper cutting roller with a cutter, a lower cutting roller with a cutting groove, and a fourth drive motor;

[0020] The fourth drive motor drives the upper and lower cutting rollers to rotate synchronously, so that the cutter and the cutting groove cooperate to cut the end of the bag blank that has completed the crease processing into a single bag unit.

[0021] The present invention further includes: a positioning mechanism at the front end of the cutting mechanism, the positioning mechanism including a lower positioning roller and an upper positioning roller with a positioning block disposed opposite to each other;

[0022] The fourth drive motor drives the lower positioning roller and the upper positioning roller to rotate synchronously, so that the positioning block cooperates with the lower positioning roller to position the rear end of the bag blank, and the cutting mechanism cuts the front end of the bag blank.

[0023] The beneficial effects of this utility model are as follows: The frame of the paper bag machine is sequentially equipped with a first creasing mechanism, a conveying device, and a cutting mechanism. The first creasing mechanism performs crease processing on the bag blank, and the conveying device conveys the crease-processed end of the bag blank forward to the cutting mechanism. The cutting mechanism cuts the crease-processed end of the bag blank into individual bag units. This allows the bag blank to be conveyed between the first creasing mechanism and the cutting mechanism on the paper bag machine in a single unit, eliminating the need for a conveyor belt and guide plates to prevent deviation during conveying. This simplifies the structure of the paper bag machine and reduces its manufacturing cost. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of a paper bag machine according to the present invention. Figure 1 ;

[0025] Figure 2 This is a schematic diagram of the structure of a paper bag machine according to the present invention. Figure 2 ;

[0026] Figure 3 This is a schematic diagram of the first indentation mechanism of a paper bag machine according to the present invention;

[0027] Figure 4 This is a schematic diagram of the second indentation mechanism of a paper bag machine according to the present invention;

[0028] Figure 5 This is a schematic diagram of the positioning mechanism of a paper bag machine according to the present invention;

[0029] Figure 6 This is a schematic diagram of the cutting mechanism of a paper bag machine according to the present invention;

[0030] Figure 7 This is a schematic diagram of the conveying device of a paper bag machine according to the present invention;

[0031] Explanation of reference numerals in the attached drawings: 1. Frame; 2. First indentation mechanism; 21. First bottom roller; 211. First pressure groove; 22. First pressure roller; 221. First pressure plate; 23. First drive motor; 3. Second indentation mechanism; 31. Second bottom roller; 311. Second pressure groove; 32. Second pressure roller; 321. Second pressure plate; 33. Second drive motor; 4. Conveying device; 41. Upper conveying roller; 42. Lower conveying roller; 5. Cutting mechanism; 51. Upper cutting roller; 511. Cutter; 52. Lower cutting roller; 521. Cutting groove; 53. Fourth drive motor; 6. Positioning mechanism; 61. Lower positioning roller; 62. Upper positioning roller; 621. Positioning block; 7. Folding and forming mechanism. Detailed Implementation

[0032] See attached document Figures 1 to 7 This utility model provides a more detailed description of a paper bag machine. The paper bag machine includes a frame 1, on which a first creasing mechanism 2, a cutting mechanism 5, and a folding and forming mechanism 7 (wherein the folding and forming mechanism 7 pertains to the prior art of paper bag bottom forming) are arranged; the cutting mechanism 5 is positioned between the first creasing mechanism 2 and the folding and forming mechanism 7, and a conveying device 4 is also provided on the cutting mechanism 5;

[0033] The first crease mechanism 2 performs crease processing on the bag blank, and the conveying device 4 conveys the crease-processed end of the bag blank forward to the cutting mechanism 5;

[0034] The cutting mechanism 5 cuts one end of the bag blank that has undergone crease processing into a single bag unit;

[0035] In the existing technology, the bag blank is first cut into individual bag units by the cutting mechanism 5. Each bag unit can only be transported to the first creasing mechanism 2 by the conveyor belt for creasing. In order to avoid the individual bag units from shifting during the transport process, which would prevent the first creasing mechanism 2 from performing precise creasing operations, a guide plate needs to be set during the transport process to ensure the accuracy of the creasing position of the bag unit.

[0036] In this paper bag machine, the bag blank is conveyed between the first creasing mechanism 2 and the cutting mechanism 5 by the conveying device 4. Since the bag blank is integrated during the conveying process, there is no need to convey it by a conveyor belt and there is no need to set up a guide plate. This simplifies the structure of the paper bag machine and reduces the manufacturing cost of the paper bag machine.

[0037] A second creasing mechanism 3 is provided between the first creasing mechanism 2 and the conveying device 4. The second creasing mechanism 3 further creasing the bag blank after the folding creasing process is completed, and completes the storage creasing process. The folding creasing is used to prepare for the production of the bag bottom. The storage creasing is to allow the bottom of the paper bag to be flipped onto the bag body so that the bottom of the bag can be attached to the bag body, making it easy to store the paper bag.

[0038] The first indentation mechanism 2 includes a first bottom roller 21, a first pressure roller 22, and a first drive motor 23 arranged opposite to each other. The first bottom roller 21 is provided with a first pressure groove 211, and the first pressure roller 22 is provided with a first pressure plate 221 that cooperates with the first pressure groove 211. The first drive motor 23 drives the first bottom roller 21 and the first pressure roller 22 to rotate synchronously, so that the first pressure plate 221 cooperates with the first pressure groove 211 to perform indentation processing on the bag blank to form fold marks. The first drive motor 23 drives the first bottom roller 21 and the first pressure roller 22 to rotate simultaneously through a synchronous belt.

[0039] The second indentation mechanism 3 includes a second bottom roller 31, a second pressure roller 32, and a second drive motor 33 arranged opposite to each other. The second bottom roller 31 is provided with a second pressure groove 311, and the second pressure roller 32 is provided with a second pressure plate 321 that cooperates with the second pressure groove 311 (the second bottom roller 31 and the first bottom roller 21, and the second pressure roller 32 and the first pressure roller 22 have the same structure). The second drive motor 33 drives the second bottom roller 31 and the second pressure roller 32 to rotate synchronously, so that the second pressure plate 321 cooperates with the second pressure groove 311 to perform indentation processing on the bag blank material that has completed the folding and creasing processing to form storage marks. The second drive motor 33 drives the second bottom roller 31 and the second pressure roller 32 to rotate simultaneously through a synchronous belt.

[0040] The conveying device 4 includes an upper conveying roller 41, a lower conveying roller 42, and a third drive motor (not shown in the figure); the third drive motor synchronously drives the upper conveying roller 41 and the lower conveying roller 42 to rotate, so that the upper conveying roller 41 and the lower conveying roller 42 cooperate to convey the bag blank material that has completed the embossing process to the cutting mechanism 5; wherein the third drive motor drives the upper conveying roller 41 and the lower conveying roller 42 to rotate synchronously through a synchronous belt to convey the bag blank material.

[0041] The cutting mechanism 5 includes an upper cutting roller 51 with a cutter 511, a lower cutting roller 52 with a cutting groove 521, and a fourth drive motor 53; the fourth drive motor 53 drives the upper cutting roller 51 and the lower cutting roller 52 to rotate synchronously, so that the cutter 511 cooperates with the cutting groove 521 to cut the end of the bag blank that has completed the crease processing into a single bag unit.

[0042] The cutting mechanism 5 is provided with a positioning mechanism 6 at its front end. The positioning mechanism 6 includes a lower positioning roller 61 and an upper positioning roller 62 provided with a positioning block 621, which are arranged opposite to each other. The fourth drive motor 53 drives the lower positioning roller 61 and the upper positioning roller 62 to rotate synchronously.

[0043] The fourth drive motor 53 drives the upper cutting roller 51, lower cutting roller 52, lower positioning roller 61, and upper positioning roller 62 to rotate synchronously via a synchronous belt. This allows the positioning block 621 to cooperate with the lower positioning roller 61 to position the bag blank, while the cutter 511 cooperates with the cutting groove 521 to position the rear end of the bag blank. This allows the cutting mechanism 5 to precisely cut the front end of the bag blank.

[0044] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A paper bag machine, comprising a frame, on which a first creasing mechanism, a cutting mechanism, and a folding and forming mechanism are arranged; characterized in that: The cutting mechanism is positioned between the first indentation mechanism and the folding and forming mechanism, and the cutting mechanism is also equipped with a conveying device; The first crease mechanism performs crease processing on the bag blank, and the conveying device conveys the crease-processed end of the bag blank forward to the cutting mechanism; The cutting mechanism cuts one end of the bag blank that has undergone crease processing into a single bag unit.

2. A paper bag machine according to claim 1, characterized in that: A second indentation mechanism is provided between the first indentation mechanism and the conveying device.

3. A paper bag machine according to claim 2, characterized in that: The first indentation mechanism includes a first bottom roller, a first pressure roller, and a first drive motor disposed opposite to each other; The first bottom roller is provided with a first pressure groove, and the first pressure roller is provided with a first pressure plate that cooperates with the first pressure groove; The first drive motor drives the first bottom roller and the first pressure roller to rotate synchronously, so that the first pressure plate and the first pressure groove cooperate to perform indentation processing on the bag blank to form fold marks.

4. A paper bag machine according to claim 3, characterized in that: The second indentation mechanism includes a second bottom roller, a second pressure roller, and a second drive motor arranged opposite to each other; The second bottom roller is provided with a second pressure groove, and the second pressure roller is provided with a second pressure plate that cooperates with the second pressure groove; The second drive motor drives the second bottom roller and the second pressure roller to rotate synchronously, so that the second pressure plate and the second pressure groove cooperate to perform indentation processing on the bag blank material that has completed the folding and creasing processing to form storage marks.

5. A paper bag machine according to claim 1, 2, 3, or 4, characterized in that: The conveying device includes an upper conveying roller, a lower conveying roller, and a third drive motor; The third drive motor synchronously drives the upper and lower conveyor rollers to rotate, so that the upper and lower conveyor rollers cooperate to transport the bag blanks that have completed the embossing process to the cutting mechanism.

6. A paper bag machine according to claim 1, 2, 3, or 4, characterized in that: The cutting mechanism includes an upper cutting roller with a cutter, a lower cutting roller with a cutting groove, and a fourth drive motor; The fourth drive motor drives the upper and lower cutting rollers to rotate synchronously, so that the cutter and the cutting groove cooperate to cut the end of the bag blank that has completed the crease processing into a single bag unit.

7. A paper bag machine according to claim 6, characterized in that: The cutting mechanism is provided with a positioning mechanism at its front end. The positioning mechanism includes a lower positioning roller and an upper positioning roller with a positioning block arranged opposite each other. The fourth drive motor drives the lower positioning roller and the upper positioning roller to rotate synchronously, so that the positioning block cooperates with the lower positioning roller to position the rear end of the bag blank, so that the cutting mechanism cuts the front end of the bag blank.