Plastic bag folding and strapping machine

Abstract

The utility model discloses a plastic bag folding and strapping machine, which belongs to the technical field of bag folding and strapping machines, and comprises a rack and a folding structure of the folding and strapping machine, the folding structure is arranged on the rack, a pressing structure is arranged on the rack, the pressing structure is arranged above the folding structure, the folding structure comprises a folding plate, a first hydraulic cylinder, an air cylinder and a support plate, the supporting plate is fixedly arranged on the rack, the pressing structure is arranged above the supporting plate, a sliding rail is fixedly arranged on the rack, the sliding rail is in sliding connection with two mounting plates, the two mounting plates are arranged on the sliding rail, the supporting plate is arranged between the two mounting plates, the air cylinder is fixedly arranged on the mounting plates, and a telescopic shaft of the air cylinder penetrates through the mounting plates to be fixedly connected to the folding plate. The folding plate abuts against the supporting plate, the first hydraulic cylinder is fixedly arranged on the rack, a telescopic shaft of the first hydraulic cylinder is fixedly connected to the mounting plate, and the plastic bag folding structure has the advantage that the plastic bag folding efficiency of the folding structure is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of bag folding and strapping machines, specifically a plastic bag folding and strapping machine. Background Technology

[0002] A plastic bag folding and strapping machine is a mechanical device used for folding and strapping packaging bags. Its main function is to replace manual labor in folding and strapping packaging bags by means of machinery, thereby improving production efficiency and reducing labor costs.

[0003] The plastic folding and strapping machine includes a frame, a feeding structure, a folding structure, a strapping structure, and a receiving structure. The feeding structure transports the plastic bags to be folded to the folding structure, the folding structure folds the plastic bags, the folded plastic bags are strapped and fixed on the strapping structure, and then the receiving structure collects the strapped plastic bags.

[0004] Regarding the aforementioned technical conditions, there is still a drawback: the current folding and strapping machine folds the plastic bag three times before transporting it to the strapping structure for strapping. The folding process is time-consuming and the equipment structure is more complex, resulting in insufficient folding efficiency.

[0005] Based on this, this utility model designs a plastic bag folding and strapping machine to solve the above problems. Utility Model Content

[0006] The purpose of this invention is to provide a plastic bag folding and strapping machine to solve the above-mentioned technical problems.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a plastic bag folding and strapping machine, comprising a frame and a folding structure. The folding structure is mounted on the frame, and a pressing structure is mounted on the frame. The pressing structure is located above the folding structure. The folding structure includes a folding plate, a first hydraulic cylinder, a cylinder, and a support plate. The support plate is fixedly mounted on the frame, and the pressing structure is located above the support plate. A slide rail is fixedly mounted on the frame, and mounting plates are slidably connected to the slide rail. Two mounting plates are mounted on the slide rail, and the support plate is located between the two mounting plates. The cylinder is fixedly mounted on the mounting plate, and the telescopic shaft of the cylinder passes through the mounting plate and is fixedly connected to the folding plate. The folding plate abuts against the support plate. The first hydraulic cylinder is fixedly mounted on the frame, and the telescopic shaft of the first hydraulic cylinder is fixedly connected to the mounting plate.

[0008] Preferably, two first hydraulic cylinders are provided on the frame, and the mounting plate is located between the two first hydraulic cylinders. The output shaft of one first hydraulic cylinder faces right and is fixedly connected to one of the mounting plates, while the output shaft of the other first hydraulic cylinder faces left and is fixedly connected to the other mounting plate.

[0009] Preferably, the pressing structure includes a crossbeam, a pressure rod, and a second hydraulic cylinder. The crossbeam is mounted on the frame and has a fixed plate. The second hydraulic cylinder is fixedly mounted on the fixed plate, and its output shaft is fixedly connected to a connecting rod. The pressure rod is fixedly connected to the connecting rod, and there are two pressure rods mounted on the connecting rod. The pressure rod is located above the support plate.

[0010] Preferably, a guide cylinder is fixedly disposed on the fixing plate, a guide rod is fixedly connected to the connecting rod, two guide rods are mirror images of each other on the connecting rod, the pressure rod is between the two guide rods, and the guide rod is inserted into the guide cylinder and extends to the outside of the guide cylinder.

[0011] Preferably, a stabilizing cylinder is fixedly mounted on the mounting plate, and a stabilizing rod is fixedly connected to the folding plate. The stabilizing rod is inserted into the stabilizing cylinder and extends to the outside of the stabilizing cylinder.

[0012] Preferably, the frame is provided with limit plates, and multiple limit plates are provided on the frame.

[0013] Preferably, a baffle is fixedly provided at the end of the folding plate away from the support plate.

[0014] In summary, this application has the following beneficial technical effects: When folding a plastic bag, the plastic bag is placed on the support plate and the folding plate. The second hydraulic cylinder is activated, and the pressure rod moves down to press against the middle of the plastic bag, making it less likely for the plastic bag to move during subsequent folding. After the plastic bag is pressed down by the pressure rod, the cylinder is activated, and the folding plate moves up, lifting both sides of the plastic bag. Then, a first hydraulic cylinder is activated, extending its output shaft and moving the mounting plate on the slide rail. The folding plate moves closer to the support plate, folding one side of the plastic bag onto the support plate. Then, another first hydraulic cylinder is activated, repeating the above operation, folding the other side of the plastic bag onto the support plate. Thus, the plastic bag only needs to be folded twice to complete the folding operation, resulting in faster folding efficiency and a simpler equipment structure, thereby improving the folding efficiency of the plastic bag folding structure. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the folding structure and the pressing structure in this embodiment;

[0017] Figure 2 This is a schematic diagram of the folding and pressing structure in this embodiment;

[0018] Figure 3 This is a schematic diagram of the folded structure in this embodiment with a plastic bag placed inside;

[0019] Figure 4 This is a side view of the folding and pressing structure in this embodiment.

[0020] The attached diagram lists the components represented by each number as follows:

[0021] 1. Baffle; 2. Slide rail; 3. First hydraulic cylinder; 4. Folding plate; 5. Support plate; 6. Limiting plate; 7. Frame; 8. Cylinder; 9. Stabilizing bar; 10. Stabilizing cylinder; 11. Mounting plate; 12. Pressure bar; 13. Connecting rod; 14. Crossbeam; 15. Guide cylinder; 16. Fixing plate; 17. Guide rod; 18. Second hydraulic cylinder. Detailed Implementation

[0022] 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 skilled in the art without creative effort are within the protection scope of the present utility model.

[0023] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0024] A plastic bag folding and strapping machine includes a frame 7 and a folding structure. The folding structure is mounted on the frame 7, and a pressing structure is mounted on the frame 7 above the folding structure. When folding the plastic bag, the pressing structure presses on the plastic bag, facilitating the folding structure to fold the plastic bag.

[0025] The folding structure includes a folding plate 4, a first hydraulic cylinder 3, a pneumatic cylinder 8, and a support plate 5. The support plate 5 is fixedly mounted on the frame 7, and the pressing structure is located above the support plate 5. Two slide rails 2 are fixedly mounted on the frame 7, and the support plate 5 is positioned between the two slide rails 2. Two mounting plates 11 are slidably connected to the slide rails 2, and the support plate 5 is positioned between the two mounting plates 11.

[0026] Cylinder 8 is fixedly mounted on mounting plate 11. The telescopic shaft of cylinder 8 passes through mounting plate 11 and is fixedly connected to folding plate 4. Folding plate 4 abuts against support plate 5, which is located between folding plate 4 and mounting plate 11. First hydraulic cylinder 3 is fixedly mounted on frame 7. The telescopic shaft of first hydraulic cylinder 3 is fixedly connected to mounting plate 11. By controlling the retraction of the telescopic shaft of first hydraulic rod 12, the sliding of mounting plate 11 on slide rail 2 can be controlled, that is, the left and right movement of folding plate 4 on support plate 5 can be controlled.

[0027] Two first hydraulic cylinders 3 are installed on the frame 7, and a mounting plate 11 is located between the two first hydraulic cylinders 3. The output shaft of one first hydraulic cylinder 3 faces right and is fixedly connected to one of the mounting plates 11; the output shaft of the other first hydraulic cylinder 3 faces left and is fixedly connected to the other mounting plate 11. By setting the output shafts of the two first hydraulic cylinders 3 in different orientations, the folding plates 4 on both sides of the support plate 5 can move closer to or further away from the support plate 5, which facilitates the subsequent folding operation of the plastic bag by the folding plates 4.

[0028] When folding a plastic bag, place the plastic bag on the support plate 5 and the folding plate 4, so that the pressing structure presses on the plastic bag. Activate the cylinder 8, and the folding plate 4 moves upward, lifting one side of the plastic bag. First, activate a first hydraulic cylinder 3, extending its telescopic shaft. The mounting plate 11, carrying the folding plate 4, moves closer to the support plate 5, folding one side of the plastic bag onto the support plate 5. Then, activate another first hydraulic cylinder 3, repeating the above operation, folding the other side of the plastic bag onto the support plate 5. In this way, the plastic bag only needs to be folded twice, saving folding time and making the folding structure more efficient. The equipment structure of the folding structure is also simpler.

[0029] The pressing structure includes a crossbeam 14, a pressure rod 12, and a second hydraulic cylinder 18. The crossbeam 14 is mounted on the frame 7 and a fixing plate 16 is mounted on the crossbeam 14. The second hydraulic cylinder 18 is fixedly mounted on the fixing plate 16. The output shaft of the second hydraulic cylinder 18 is fixedly connected to a connecting rod 13. The pressure rod 12 is fixedly connected to the connecting rod 13. There are two pressure rods 12 on the connecting rod 13. The pressure rods 12 are located above the support plate 5.

[0030] A guide cylinder 15 is fixedly mounted on the fixed plate 16, and a guide rod 17 is fixedly connected to the connecting rod 13. Two guide rods 17 are mirror images of each other on the connecting rod 13. A pressure rod 12 is located between the two guide rods 17. The guide rods 17 are inserted into the guide cylinder 15 and extend outside the guide cylinder 15. When the second hydraulic cylinder 18 is activated to press the pressure rod 12 against the plastic bag on the support plate 5, the guide rods 17 make the up-and-down movement of the pressure rod 12 more stable.

[0031] A stabilizing cylinder 10 is fixedly mounted on the mounting plate 11. There are two stabilizing cylinders 10 on the mounting plate 11, and the cylinder 8 is located between the two stabilizing cylinders 10. A stabilizing rod 9 is fixedly connected to the folding plate 4. The stabilizing rod 9 is inserted into the stabilizing cylinder 10 and extends to the outside of the stabilizing cylinder 10. The design of the stabilizing rod 9 and the stabilizing cylinder 10 makes the folding plate 4 more stable when it moves up and down under the action of the cylinder 8, and it is not easy to shake.

[0032] A limit plate 6 is provided on the frame 7. Multiple limit plates 6 are provided on the frame 7. The limit plates 6 limit the movement distance of the mounting plate 11 on the slide rail 2. Under the action of the limit plates 6, the movement distance of the mounting plate 11 on the slide rail 2 is within a certain range. A baffle 1 is fixedly provided at the end of the folding plate 4 away from the support plate 5. When a plastic bag is placed on the support plate 5 and the folding plate 4, the baffle 1 on the folding plate 4 prevents the plastic bag from falling off the support plate 5 and the folding plate 4.

[0033] The implementation principle of this embodiment is as follows: When folding a plastic bag, the plastic bag is placed on the support plate 5 and the folding plate 4. The second hydraulic cylinder 18 is activated, and the pressure rod 12 moves down to press on the middle part of the plastic bag, making it difficult for the plastic bag to move when the folding plate 4 folds the plastic bag. After the plastic bag is pressed down by the pressure rod 12, the cylinder 8 is activated, and the folding plate 4 moves up. Both sides of the plastic bag are lifted by the folding plate 4. First, a first hydraulic cylinder 3 is activated, and the output shaft of the first hydraulic cylinder 3 extends. The mounting plate 11 moves on the slide rail 2, and the folding plate 4 moves closer to the support plate 5. One side of the plastic bag is folded onto the support plate 5. Then, another first hydraulic cylinder 3 is activated, and the above operation is repeated. The folding plate 4 folds the other side of the plastic bag onto the support plate 5. At this time, the plastic bag only needs to be folded twice to complete the folding operation. The folding efficiency is faster, and the equipment structure of the folding structure is simpler, thus achieving the effect of improving the folding efficiency of the folding structure for plastic bags.

[0034] In the description of this utility model, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "side", "top", "inner", "front", "center", "both ends", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They 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. Therefore, they should not be construed as limitations on this utility model.

[0035] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", "screw connection", etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0036] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A plastic bag folding and strapping machine, comprising a frame (7) and a folding structure, characterized in that: The folding structure is mounted on the frame (7), and a pressing structure is mounted on the frame (7). The pressing structure is above the folding structure. The folding structure includes a folding plate (4), a first hydraulic cylinder (3), a cylinder (8), and a support plate (5). The support plate (5) is fixedly mounted on the frame (7), and the pressing structure is above the support plate (5). A slide rail (2) is fixedly mounted on the frame (7), and the slide rail (2) is slidably connected to a mounting plate (11). 1) Two support plates (5) are provided on the slide rail (2), and the cylinder (8) is fixedly installed on the mounting plate (11). The telescopic shaft of the cylinder (8) passes through the mounting plate (11) and is fixedly connected to the folding plate (4). The folding plate (4) abuts against the support plate (5). The first hydraulic cylinder (3) is fixedly installed on the frame (7), and the telescopic shaft of the first hydraulic cylinder (3) is fixedly connected to the mounting plate (11).

2. The plastic bag folding and strapping machine according to claim 1, characterized in that: Two first hydraulic cylinders (3) are provided on the frame (7). The mounting plate (11) is located between the two first hydraulic cylinders (3). The output shaft of one first hydraulic cylinder (3) faces right and is fixedly connected to one of the mounting plates (11). The output shaft of the other first hydraulic cylinder (3) faces left and is fixedly connected to the other mounting plate (11).

3. A plastic bag folding and strapping machine according to claim 1, characterized in that: The pressing structure includes a crossbeam (14), a pressure rod (12), and a second hydraulic cylinder (18). The crossbeam (14) is mounted on the frame (7), and a fixing plate (16) is mounted on the crossbeam (14). The second hydraulic cylinder (18) is fixedly mounted on the fixing plate (16), and a connecting rod (13) is fixedly connected to the output shaft of the second hydraulic cylinder (18). The pressure rod (12) is fixedly connected to the connecting rod (13), and there are two pressure rods (12) mounted on the connecting rod (13). The pressure rods (12) are located above the support plate (5).

4. A plastic bag folding and strapping machine according to claim 3, characterized in that: A guide cylinder (15) is fixedly installed on the fixed plate (16), and a guide rod (17) is fixedly connected to the connecting rod (13). There are two guide rods (17) mirrored on the connecting rod (13). The pressure rod (12) is between the two guide rods (17). The guide rod (17) is inserted into the guide cylinder (15) and extends to the outside of the guide cylinder (15).

5. A plastic bag folding and strapping machine according to claim 1, characterized in that: A stabilizing cylinder (10) is fixedly installed on the mounting plate (11), and a stabilizing rod (9) is fixedly connected to the folding plate (4). The stabilizing rod (9) is inserted into the stabilizing cylinder (10) and extends to the outside of the stabilizing cylinder (10).

6. A plastic bag folding and strapping machine according to claim 1, characterized in that: The frame (7) is provided with a limiting plate (6), and multiple limiting plates (6) are provided on the frame (7).

7. A plastic bag folding and strapping machine according to claim 1, characterized in that: A baffle (1) is fixedly provided at the end of the folding plate (4) away from the support plate (5).

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