Single-side cutting device for paper-plastic bowl-shaped packaging box

Abstract

The utility model relates to the technical field of packaging box processing, in particular to a paper-plastic bowl-shaped packaging box single-side notching device which comprises a workbench, a notching mechanism used for notching a paper-plastic bowl-shaped packaging box single side is arranged on the upper surface of the workbench, and the notching mechanism comprises an air cylinder, a base, a spring, a pressing block, a punch, a product positioning structure, a receding space and a discharging position. A channel for the punch to move is formed in the outer portion of the pressing block, the paper-plastic bowl-shaped packaging box is positioned through the product positioning structure, meanwhile, the pressing block is matched with the spring, the packaging box is fixed before cutting, and due to the fact that the face, close to a product, of the pressing block is machined into the concave curved face matched with the arc face of the upper edge of the product, the product can be conveniently cut. According to the technical scheme, reliable positioning constraint can be formed on a product, large positioning deviation is avoided, the accuracy of the notch position is guaranteed, meanwhile, the punch is arc-shaped, it is guaranteed that cutting force is evenly distributed, continuous and stable cutting can be conveniently achieved, and the risk that the product is damaged is reduced.

Description

Technical Field

[0001] This utility model relates to the field of packaging box processing technology, and in particular to a single-sided cutting device for a paper-plastic bowl-shaped packaging box. Background Technology

[0002] The single-sided cutting device for paper-plastic bowl-shaped packaging boxes refers to equipment designed for paper-plastic bowl-shaped packaging boxes that enables single-sided cutting during processing. Because the paper-plastic bowl-shaped packaging box is semi-circular, the following problems may occur:

[0003] 1. From a positioning perspective, most common positioning mechanisms are designed based on regular geometric shapes. For products with a semi-circular structure, it is difficult to form reliable positioning constraints, which will result in a large positioning deviation.

[0004] 2. Traditional side cutting processes typically use flat-blade cutters as the actuating element. When using a flat-blade cutter to cut a semi-circular side, the contact line between the blade and the product surface is not straight, resulting in uneven distribution of cutting force. This makes it difficult to achieve continuous and stable cutting and can easily damage the product. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a single-side cutting device for paper-plastic bowl-shaped packaging boxes. From a positioning perspective, this device solves the problems that common positioning mechanisms are mostly designed based on regular geometric shapes, making it difficult to form reliable positioning constraints for semi-circular products, resulting in significant positioning deviations. Furthermore, traditional side cutting processes typically use flat-bladed cutters as the actuating element. When using a flat-bladed cutter to cut the semi-circular side, the contact line between the blade and the product surface is not linear, leading to uneven distribution of cutting force, making it difficult to achieve continuous and stable cutting, and easily causing damage to the product.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A single-sided cutting device for a paper-plastic bowl-shaped packaging box includes a worktable. The upper surface of the worktable is provided with a cutting mechanism for cutting one side of the paper-plastic bowl-shaped packaging box. The cutting mechanism includes a cylinder, a base, springs, a pressure block, a punch, a product positioning structure, a clearance, and a discharge position. The cylinder is fixedly installed on the upper surface of the worktable and serves as the power source for the cutting mechanism. The base is fixedly installed outside the piston rod of the cylinder. There are two springs, both of which are fixedly connected to the outside of the base. The pressure block is fixedly connected to the ends of the two springs. The punch is fixedly installed outside the base. The product positioning structure is located on the worktable. The clearance is opened at the end of the product positioning structure near the punch. The discharge position is opened on the side of the worktable near the clearance and is used to discharge waste material. A channel for the movement of the punch is opened on the outside of the pressure block.

[0008] Preferably, the upper surface of the worktable is provided with a guide rail, and the lower end of the base is slidably connected to the inside of the guide rail.

[0009] Preferably, both ends of the pressure block are fixedly installed with support shafts, and two springs are respectively movably sleeved on the outside of the two support shafts.

[0010] Preferably, the base has movable holes at both ends, the support shaft is slidably connected inside the movable holes, each support shaft has a limit shaft at the end away from the pressure block, each movable hole has a limit hole inside, the limit shaft and the support shaft are slidably connected inside the limit hole, and each support shaft has a screw fixedly installed on the outside, the limit shaft is threaded to the outside of the screw.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] 1. The paper-plastic bowl-shaped packaging box is positioned using a product positioning structure. At the same time, the packaging box is fixed before the cut by the cooperation of the pressure block and the spring. Since the side of the pressure block close to the product is processed into a concave curved surface that matches the upper arc surface of the product, it can form a reliable positioning constraint on the product, avoiding large positioning deviations and ensuring the accuracy of the cut position. Meanwhile, the punch is arc-shaped to ensure uniform distribution of cutting force, so as to achieve continuous and stable cutting and reduce the risk of damage to the product.

[0013] 2. Rotate the limiting shaft to disconnect the connection between the limiting shaft and the screw. At this time, disconnect the connection between the spring and the base. Then push the base to disconnect the connection between the base and the support shaft. At this time, the pressure block can be removed from the base. Then disconnect the connection between the spring and the pressure block. The spring is now removed. The spring is removable, which makes it easy to replace the fatigued spring after long-term use and ensures the stability of the pressure block in fixing the packaging box. Attached Figure Description

[0014] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings.

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0016] Figure 2 This utility model Figure 1 Structural diagram of the product positioning structure in China;

[0017] Figure 3 This utility model Figure 2 Cross-sectional view of the central base;

[0018] Figure 4 This utility model Figure 3Exploded view of the central base;

[0019] Figure 5 This utility model Figure 4 Structural diagram of the central support shaft.

[0020] Legend: 1. Workbench; 2. Cylinder; 3. Base; 4. Spring; 5. Pressure block; 6. Punch; 7. Product positioning structure; 8. Clearance; 9. Unloading position; 10. Channel; 11. Guide rail; 12. Support shaft; 13. Moving hole; 14. Limiting shaft; 15. Limiting hole; 16. Screw. Detailed Implementation

[0021] This application provides a single-side cutting device for a paper-plastic bowl-shaped packaging box, which effectively solves the technical problems from a positioning perspective. Common positioning mechanisms are mostly designed based on regular geometric shapes, which makes it difficult to form reliable positioning constraints for semi-circular products, resulting in large positioning deviations. In addition, traditional side cutting processes usually use flat-bladed cutters as the actuating element. When using flat-bladed cutters to cut the semi-circular side, the contact line between the blade and the product surface is not straight, resulting in uneven distribution of cutting force, making it difficult to achieve continuous and stable cutting, and easily causing damage to the product.

[0022] Example

[0023] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, the technical solution in this application effectively solves the problems that, from a positioning perspective, most common positioning mechanisms are designed based on regular geometric shapes, making it difficult to form reliable positioning constraints for semi-circular products, resulting in significant positioning deviations. Furthermore, traditional side-cutting processes typically use flat-bladed cutters as the actuating element. When using a flat-bladed cutter to cut the side of a semi-circle, the contact line between the blade and the product surface is not linear, leading to uneven cutting force distribution, making continuous and stable cutting difficult, and easily damaging the product. The overall approach is as follows:

[0024] To address the problems existing in the prior art, this utility model provides a single-sided cutting device for a paper-plastic bowl-shaped packaging box. The device includes a workbench 1, with a cutting mechanism on its upper surface for cutting the single side of the box. The cutting mechanism comprises a cylinder 2, a base 3, springs 4, a pressure block 5, a punch 6, a product positioning structure 7, a clearance 8, and a discharge position 9. The cylinder 2 is fixedly installed on the upper surface of the workbench 1 and serves as the power source for the cutting mechanism. The base 3 is fixedly installed outside the piston rod of the cylinder 2. There are two springs 4, both fixedly connected to the outside of the base 3. The pressure block 5 is fixedly connected to the ends of the two springs 4. The side of the pressure block 5 closest to the product is machined into a concave curved surface that matches the upper arc surface of the product. The punch 6 is fixedly installed outside the base 3 and is arc-shaped. The product positioning structure 7 is located on the workbench 1. The clearance 8 is located at one end of the product positioning structure 7 closest to the punch 6. The discharge position 9 is located on the side of the workbench 1 closest to the clearance 8 and is used to discharge waste material.

[0025] The pressure block 5 has a channel 10 on its outside for the punch 6.

[0026] The upper surface of the workbench 1 is provided with a guide rail 11, and the lower end of the base 3 is slidably connected to the inside of the guide rail 11.

[0027] Both ends of the pressure block 5 are fixedly installed with support shafts 12, and two springs 4 are respectively movably sleeved on the outside of the two support shafts 12.

[0028] Both ends of the base 3 are provided with movable holes 13, and the support shaft 12 is slidably connected inside the movable hole 13. Each support shaft 12 is provided with a limit shaft 14 at the end away from the pressure block 5. Each movable hole 13 is provided with a limit hole 15 inside, and the limit shaft 14 and the support shaft 12 are slidably connected inside the limit hole 15.

[0029] Each support shaft 12 is fixedly mounted with a screw 16 on its exterior, and a limit shaft 14 is threadedly connected to the exterior of the screw 16.

[0030] Cylinder 2: As a power source, it provides power to the cutting mechanism through the extension and retraction of the piston rod, driving the base 3, punch 6 and other components to move;

[0031] Base 3: Connects the piston rod of cylinder 2, fixes the punch 6, and drives the punch 6 to move under the push of cylinder 2. After the pressure block 5 contacts the product, the compression spring 4 continues to move forward.

[0032] Spring 4: Through the elastic action of spring 4, the pressure block 5 contacts the product before the punch 6 and presses the product down, preventing the product from shifting during the cutting process and ensuring the accuracy and stability of the cut.

[0033] Pressing block 5: Presses the product before punch 6 under the push of cylinder 2, and the channel 10 opened on its outside provides a movement path for punch 6;

[0034] Punch 6: Passes through channel 10 of pressure block 5 to perform a one-sided cutting operation on the product, and carries the waste generated by the cutting into the air vent 8;

[0035] Product positioning structure 7: Position the paper-plastic bowl-shaped packaging box to ensure that the product is placed in the same position each time;

[0036] 8: Used to accommodate the waste carried by the punch 6, providing space for the waste to fall;

[0037] Discharge point 9: This is the outlet for waste material to fall out, used to discharge waste material generated during the cutting process;

[0038] Guide rail 11: Provides guidance for the movement of base 3, improving the smoothness and accuracy of base 3 movement;

[0039] Support shaft 12: used to sleeve spring 4, and slide in movable hole 13 to connect pressure block 5 and base 3. When base 3 moves, support shaft 12 slides in movable hole 13 to realize relative movement between pressure block 5 and base 3.

[0040] Limiting shaft 14: Prevents the support shaft 12 from disengaging from the moving hole 13 during movement, ensuring the normal operation of the support shaft 12 and the pressure block 5. At the same time, the spring 4 can be replaced through the cooperation of the limiting shaft 14 and the screw 16. That is, rotating the limiting shaft 14 will disconnect the connection between the limiting shaft 14 and the screw 16, thus disconnecting the spring 4 from the base 3. Then push the base 3 to disconnect the connection between the base 3 and the support shaft 12. At this time, the pressure block 5 can be removed from the base 3, and the connection between the spring 4 and the pressure block 5 can be disconnected. At this time, the spring 4 is disassembled.

[0041] Working principle:

[0042] The first step is to place the product on the outside of the product positioning structure 7. At this time, the cylinder 2 is activated. The piston rod of the cylinder 2 moves and pushes the pressure block 5 and the punch 6. During this process, the pressure block 5 first contacts the paper-plastic bowl-shaped packaging box. As the base 3 continues to move, the pressure block 5 is blocked by the packaging box and cannot move forward. Meanwhile, the base 3 compresses the spring 4 sleeved on the outside of the support shaft 12 and continues to move forward. During this process, the spring 4 is compressed. At this time, the pressure block 5 applies pressure to the packaging box and fixes the packaging box on the product positioning structure 7, preventing the packaging box from shifting during the subsequent cutting process. When the base 3 compresses the spring 4 and moves forward to a certain position, the punch 6 completes the cutting operation. The punch 6 carries the waste generated during the cutting process and continues to move forward, entering the clearance 8.

[0043] In the second step, after the piston rod of cylinder 2 extends to the set stroke, cylinder 2 begins to retract. During the resetting process, punch 6 exits from the clearance 8, and the waste material it carries falls from the unloading position 9 on the side of workbench 1 near clearance 8 due to gravity, thus completing the discharge of waste material. Finally, the operator removes the paper-plastic bowl-shaped packaging box that has completed the cutting operation from the product positioning structure 7.

[0044] Finally, it should be noted that the above embodiments are merely examples for clearly illustrating the present invention and are not intended to limit the implementation. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A single-sided cutting device for a paper-plastic bowl-shaped packaging box, comprising a workbench (1), characterized in that, The upper surface of the workbench (1) is provided with a cutting mechanism for cutting one side of the paper-plastic bowl-shaped packaging box. The cutting mechanism includes a cylinder (2), a base (3), a spring (4), a pressure block (5), a punch (6), a product positioning structure (7), a clearance (8), and a discharge position (9). The cylinder (2) is fixedly installed on the upper surface of the workbench (1) and is used as the power source for the cutting mechanism. The base (3) is fixedly installed on the outside of the piston rod of the cylinder (2). There are two springs (4), and both springs (4) are fixedly connected to the outside of the base (3). The pressure block (5) is fixedly connected to the ends of the two springs (4). The punch (6) is fixedly installed on the outside of the base (3). The product positioning structure (7) is set on the workbench (1). The clearance (8) is opened at one end of the product positioning structure (7) near the punch (6). The unloading position (9) is opened on the side of the workbench (1) near the clearance (8) and is used to discharge waste. The pressure block (5) has a channel (10) on its outside for the movement of the punch (6).

2. The single-sided cutting device for a paper-plastic bowl-shaped packaging box as described in claim 1, characterized in that, The upper surface of the workbench (1) is provided with a guide rail (11). The lower end of the base (3) is slidably connected to the inside of the guide rail (11).

3. The single-sided cutting device for a paper-plastic bowl-shaped packaging box as described in claim 1, characterized in that, Both ends of the pressure block (5) are fixedly installed with support shafts (12); Two springs (4) are respectively movably sleeved on the outside of two support shafts (12).

4. The single-sided cutting device for a paper-plastic bowl-shaped packaging box as described in claim 1, characterized in that, The base (3) has movable holes (13) at both ends; The support shaft (12) is slidably connected inside the moving hole (13).

5. The single-sided cutting device for a paper-plastic bowl-shaped packaging box as described in claim 3, characterized in that, Each of the support shafts (12) is provided with a limit shaft (14) at one end away from the pressure block (5), and each moving hole (13) is provided with a limit hole (15). The limiting shaft (14) and the support shaft (12) are both slidably connected inside the limiting hole (15).

6. The single-sided cutting device for a paper-plastic bowl-shaped packaging box as described in claim 3, characterized in that, Each of the support shafts (12) is fixedly mounted with a screw (16) on its exterior. The limiting shaft (14) is threaded to the outside of the screw (16).

Images