Paper bag processing bottom folding device

Abstract

The utility model discloses a paper bag processing bottom folding device, including paper bag body, the lower part of paper bag body is provided with the support, the upper portion of support is provided with the pressure mechanism for stabilizing bag bottom, the inside of support is provided with the clamping mechanism of stabilizing bag body, the upper surface of support is provided with the folding plate for folding bag bottom, the utility model discloses through second belt and third belt clamping fixed bag body, first belt and support clamping fixed bag bottom, after first belt guides paper bag body to pass between two folding plates, and two folding plates extrude the both ends of bag bottom, and the bag bottom is folded into U type, thereby leaving the crease on bag bottom, finally personnel are glued on bag bottom, and along the crease, and the bag bottom is folded into rectangle, can complete bottom folding, can avoid the situation that bag bottom deforms, guarantees the accuracy of subsequent bag bottom folding position.

Description

Technical Field

[0001] This utility model relates to the field of paper bag processing, and in particular to a paper bag folding device. Background Technology

[0002] Paper bags are packaging containers made of paper or cardboard, widely used for product packaging, transportation, and storage. They have advantages such as being environmentally friendly (recyclable and biodegradable), low-cost, and highly printable. They are commonly used in food, clothing, gifts, and electronic products. There are various types, including envelope-style, square-bottomed, carry-on (handbag), and M-folded types. Among them, square-bottomed paper bags, due to their square or rectangular bottom structure, can stand upright and have a strong load-bearing capacity, making them one of the mainstream types. Folded bottoms refer to folding the bottom of the bag into a diamond or square shape and then gluing it in place to form a sturdy bottom surface, allowing the paper bag to withstand greater weight and not easily deformed, thus preventing damage to goods during transportation.

[0003] Chinese patent CN222538411U discloses an integrated device for folding and bonding the bottom of a paper bag. By installing the main mechanism, the gluing capacity is improved, which can effectively apply glue to the bottom of the paper bag, improve the uniformity of the glue application, and reduce the amount of labor.

[0004] In the above solution, one end of the bag bottom is fixed inside the placement groove by a suction cup, while the other end of the bag bottom is vertically positioned on one side of the placement groove. Then, glue is applied to the surface of the fixed end of the bag bottom, and a pressure plate is used to fold the vertical end of the bag bottom towards the fixed end, thus completing the bottom fold. However, in the above solution, the vertical end of the bag bottom is not effectively limited, and the paper bag material is soft and easily deformed, causing the vertical end of the bag bottom to easily bend into an arc shape. If the bottom is folded at this time, it is difficult to guarantee the accuracy of the position after folding. There is a problem that the soft and easily deformed bag bottom can easily lead to deviations in the folding position. Therefore, a paper bag processing bottom folding device is proposed to solve the above problems. Utility Model Content

[0005] The purpose of this utility model is to provide a paper bag processing bottom folding device to solve the problem mentioned in the background art that the bag bottom is soft and easily deformed, which leads to deviations in the folding position. The technical solution of this utility model provides a solution that is significantly different from the prior art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: A paper bag processing bottom folding device includes a paper bag body, a support is provided below the paper bag body, a pressing mechanism for stabilizing the bottom of the bag is provided above the support, a clamping mechanism for stabilizing the bag body is provided inside the support, a first driving mechanism for driving the pressing mechanism is provided on one side of the support, a second driving mechanism for driving the clamping mechanism is provided at one end of the support, and a folding plate for folding the bottom of the bag is provided on the top of the support.

[0007] Preferably, a guide plate is provided at the bottom of the bracket, a material guide groove is provided in the middle of the bracket, and a clamping mechanism is located inside the bracket. The clamping mechanism includes a second belt and a third belt, which are respectively installed on both sides of the material guide groove.

[0008] Preferably, the clamping mechanism includes a first belt mounted below the support plate, with the bottom of the bag held between the first belt and the bracket, and the first belt guiding the bottom of the bag through the space between two folding plates.

[0009] Preferably, the first drive mechanism includes a first motor, a drive gear, and a driven gear. The first motor is fixed on a support plate, the drive gear is mounted on a transmission shaft inside the first motor, the drive gear and the driven gear mesh, and the driven gear is connected to a pulley shaft inside the first belt.

[0010] Preferably, the second drive mechanism includes a second motor and a third motor, the second motor being connected to a pulley shaft inside the second belt, and the third motor being connected to a pulley shaft inside the third belt.

[0011] Compared with the prior art, the beneficial effects of this utility model are: This invention uses a second and third belt to clamp the bag body, guiding the bottom of the paper bag body under the first belt. The first belt and the support clamp the bottom of the bag. Then, the first, second, and third belts simultaneously guide the paper bag body through the space between two folding plates. The two folding plates press the two ends of the bottom of the bag, folding the bottom of the bag into a U-shape, thus leaving a crease on the bottom of the bag. Finally, the person applies glue to the bottom of the bag and folds the bottom of the bag into a rectangle along the crease, thus completing the bottom folding. During the folding process, the bottom of the bag is always in close contact with the first belt, which can avoid the deformation of the bottom of the bag and ensure the accuracy of the bottom folding position. Attached Figure Description

[0012] Figure 1 A schematic diagram of the main structure of the paper bag folding device; Figure 2 A schematic diagram of the support structure in the bottom-folding device for paper bag processing; Figure 3 This is a schematic diagram of the support plate in the paper bag folding device.

[0013] In the diagram: 1. First belt; 2. Second belt; 201. Second motor; 3. Third belt; 301. Third motor; 4. Paper bag body; 5. Folding plate; 6. Support; 601. Guide plate; 602. Material guide chute; 7. First motor; 701. Drive gear; 702. Driven gear; 8. Support plate. Detailed Implementation

[0014] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0015] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] Please see Figure 1-3In this utility model, a paper bag processing bottom folding device includes a paper bag body 4, a support 6 is provided below the paper bag body 4, a first belt 1 is provided above the support 6, a second belt 2 and a third belt 3 are provided inside the support 6, a first motor 7 for driving the first belt 1 is provided on one side of the support 6, a second motor 201 and a third motor 301 are provided at one end of the support 6, and a folding plate 5 for folding the bottom of the bag is provided on the top of the support 6.

[0018] Example 1: Please refer to Figure 1-3 In this embodiment of the utility model, a paper bag processing bottom folding device is provided. A guide plate 601 is provided on the bottom of the bracket 6, a material guide groove 602 is provided in the middle of the bracket 6, the clamping mechanism is located inside the bracket 6, and the second belt 2 and the third belt 3 are respectively installed on both sides of the material guide groove 602.

[0019] The first belt 1 is installed below the support plate 8. The bottom of the bag is clamped between the first belt 1 and the bracket 6. The first motor 7 is fixed on the support plate 8. The driving gear 701 is installed on the transmission shaft inside the first motor 7. The driving gear 701 and the driven gear 702 mesh. The driven gear 702 is connected to the pulley shaft inside the first belt 1.

[0020] The second motor 201 is connected to the pulley shaft inside the second belt 2, and the third motor 301 is connected to the pulley shaft inside the third belt 3. The first motor 7, the second motor 201 and the third motor 301 drive the first belt 1, the second belt 2 and the third belt 3 to rotate at the same speed.

[0021] Two folding plates 5 are symmetrically arranged on both sides of the support 6. Each folding plate 5 includes a flat plate, a twisting plate, and a vertical plate connected in sequence. The flat plate is parallel to the upper surface of the support 6 and is located on both sides of the support 6, with its upper surface flush with the upper surface of the support 6. The vertical plate is positioned vertically at the edge of the support 6. The twisting plate smoothly connects to the adjacent sides of the flat plate and the vertical plate. As the paper bag moves along the length of the support 6, the flat plate first contacts the bottom end of the paper bag, and then, guided by the twisting plate, gradually folds up the bottom end of the bag.

[0022] After the body of the paper bag is inserted into the guide groove 602 from one end of the bracket 6, the second belt 2 and the third belt 3 clamp and fix the bag body, and guide the bottom of the paper bag body into the bottom of the first belt 1, so that the first belt 1 and the bracket 6 clamp the bottom of the bag. Then, the first belt 1, the second belt 2 and the third belt 3 simultaneously guide the paper bag body through the two folding plates 5. The two folding plates 5 cooperate with the first belt 1 to squeeze the two ends of the bottom of the bag, and guide the two ends of the bottom of the bag from a horizontal state to a vertical state through the structure of the folding plates 5 themselves, thereby folding the bottom of the bag into a U-shape, thus leaving a crease on the bottom of the bag. Finally, the person applies glue to the bottom of the bag and folds the bottom of the bag into a rectangle along the crease, thus completing the bottom fold. During the folding, the bottom of the bag is always in close contact with the first belt 1, which can avoid the deformation of the bottom of the bag and ensure the accuracy of the subsequent folding position of the bottom of the bag.

[0023] After multiple paper bag bodies are sequentially clamped between the second belt 2 and the third belt 3, the above steps are repeated to achieve continuous bottom folding of the paper bag bodies, thereby improving the production efficiency of the paper bag bodies.

[0024] The working principle of this utility model is as follows: the bag body is clamped and fixed by the second belt 2 and the third belt 3, and the bottom of the bag is clamped and fixed by the first belt 1 and the bracket 6. Then, the first belt 1, the second belt 2 and the third belt 3 simultaneously guide the paper bag body through the two folding plates 5. The two folding plates 5 squeeze the two ends of the bottom of the bag, folding the bottom of the bag into a U-shape, thereby leaving creases on the bottom of the bag. Finally, the personnel apply glue to the bottom of the bag and fold the bottom of the bag into a rectangle along the creases to complete the bottom folding.

[0025] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0026] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A paper bag processing bottom folding device, comprising a paper bag body (4), characterized in that: A bracket (6) is provided below the paper bag body (4), a pressing mechanism for stabilizing the bottom of the bag is provided above the bracket (6), a clamping mechanism for stabilizing the bag body is provided inside the bracket (6), a first driving mechanism for driving the pressing mechanism is provided on one side of the bracket (6), a second driving mechanism for driving the clamping mechanism is provided at one end of the bracket (6), and a folding plate (5) for folding the bottom of the bag is provided on the top of the bracket (6).

2. The paper bag processing bottom folding device according to claim 1, characterized in that: A guide plate (601) is provided on the bottom of the bracket (6), and a guide groove (602) is provided in the middle of the bracket (6). The clamping mechanism is located inside the bracket (6). The clamping mechanism includes a second belt (2) and a third belt (3). The second belt (2) and the third belt (3) are respectively installed on both sides of the guide groove (602).

3. The paper bag processing bottom folding device according to claim 1, characterized in that: The clamping mechanism includes a first belt (1) which is installed below the support plate (8). The bottom of the bag is held between the first belt (1) and the bracket (6). The first belt (1) guides the bottom of the bag through the space between two folding plates (5).

4. The paper bag processing bottom folding device according to claim 1, characterized in that: The first drive mechanism includes a first motor (7), a drive gear (701) and a driven gear (702). The first motor (7) is fixed on the support plate (8). The drive gear (701) is mounted on the transmission shaft inside the first motor (7). The drive gear (701) and the driven gear (702) mesh. The driven gear (702) is connected to the pulley shaft inside the first belt (1).

5. A paper bag processing bottom folding device according to claim 1, characterized in that: The second drive mechanism includes a second motor (201) and a third motor (301). The second motor (201) is connected to the pulley shaft inside the second belt (2), and the third motor (301) is connected to the pulley shaft inside the third belt (3).

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