A bag cutting device for composite film bag production and processing

Abstract

The utility model discloses a cut bag equipment for composite film bag production and processing relates to composite film bag production technical field, including work table, the top fixed connection of work table has the U shape board, both sides of the top of U shape board all are fixedly connected with first support block, and the inboard swing joint of first support block has the pivot. The utility model discloses through setting up U shape board, first support block, pivot, oval spare, first motor, support plate, fixed link, cutting knife, fixed block and first spring, and the radius change of oval spare rotation can drive cutting knife to realize stable reciprocating cutting, and cooperate the reset action of first spring, and the cutting frequency and efficiency are improved greatly, the production of current composite film bag generally adopts manual cutting mode, and this operation mode not only has the problem of low cutting efficiency, but also is easy to cause the cutting position to deviate from the preset standard because of the operating error, directly influences the link precision of subsequent bag making process, and finally restricts the overall production efficiency problem of plastic bag.

Description

Technical Field

[0001] This utility model relates to the field of composite film bag production technology, specifically a bag cutting device for composite film bag production and processing. Background Technology

[0002] Composite film bags are flexible packaging containers made of two or more functional polymer materials laminated through a special process. They have multiple protective properties and flexible application advantages. Their typical structure includes a scientific combination of an outer wear-resistant and tear-resistant substrate, a middle high-barrier functional layer, and an inner heat-sealing adapter layer. They can effectively isolate oxygen, water vapor, light, and odor penetration, and significantly extend the shelf life of the contents.

[0003] Currently, the production of composite film bags generally adopts manual cutting. This operation mode not only has the problem of low cutting efficiency, but also is prone to deviation from the preset standard due to operational errors, which directly affects the connection accuracy of subsequent bag making processes and ultimately restricts the overall production efficiency of plastic bags. Utility Model Content

[0004] To address the problems mentioned in the background art, the purpose of this utility model is to provide a bag cutting device for the production and processing of composite film bags. This device has the advantage of fixed cutting of composite film bags, solving the problem that the current production of composite film bags generally adopts manual cutting. This operation mode not only has the problem of low cutting efficiency, but also is prone to deviation of the cutting position from the preset standard due to operation errors, which directly affects the connection accuracy of subsequent bag making processes and ultimately restricts the overall production efficiency of plastic bags.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a bag-cutting device for composite film bag production and processing, comprising a workbench, a U-shaped plate fixedly connected to the top of the workbench, first support blocks fixedly connected to both sides of the top of the U-shaped plate, a rotating shaft movably connected to the inner side of the first support block, an elliptical component provided on the inner side of the first support block, the two ends of the elliptical component being fixedly connected to the inner side of the rotating shaft, a first motor fixedly connected to the front of the front first support block, the output of the first motor being fixedly connected to the outer end of the front rotating shaft, a support plate provided on the inner side of the U-shaped plate, a fixed rod fixedly connected to the top of the support plate, a cutting blade fixedly connected to the bottom of the support plate, a fixed block fixedly connected to the top of the fixed rod, a first spring fixedly connected to the bottom of the fixed block, the other end of the first spring being connected to the top of the U-shaped plate, the first spring being sleeved on the surface of the fixed rod, a fixing assembly provided at the bottom of the support plate, and a conveying assembly provided on the right side of the top of the workbench.

[0006] As a preferred embodiment of this utility model, the fixing component includes a fixing plate, a second spring, and a T-shaped plate. The fixing plates are all disposed on both sides of the bottom of the support plate. The second spring is fixedly connected to the top of the fixing plate, and the other end of the second spring is connected to the bottom of the support plate. Several second springs are provided and are distributed in a rectangular and equidistant manner.

[0007] In a preferred embodiment of this invention, the conveying assembly includes a second support block, a second motor, and a winding rod. The second support block is fixedly connected to both sides of the right side of the top of the workbench, the second motor is fixedly connected to the front of the front second support block, and the winding rod is fixedly connected to the output end of the second motor.

[0008] As a preferred embodiment of this utility model, a third support block is fixedly connected to both sides of the top right side of the workbench, and a transmission roller is movably connected to the inner side of the third support block.

[0009] In a preferred embodiment of this invention, a first connecting rod is fixedly connected to the back of the transmission roller, the other end of the first connecting rod extends through to the back of the third support block on the rear side, a first transmission wheel is fixedly connected to the rear end of the first connecting rod, a second connecting rod is fixedly connected to the rear end of the winding rod, the other end of the second connecting rod extends through to the back of the second fixed block on the rear side, a second transmission wheel is fixedly connected to the rear end of the second connecting rod, and a belt is fitted onto the first transmission wheel and the second transmission wheel.

[0010] As a preferred embodiment of this utility model, a damper is fixedly connected to the top of the fixed plate, the other end of the damper is fixedly connected to the bottom of the support plate, and the second spring is sleeved on the surface of the damper.

[0011] As a preferred embodiment of this utility model, both sides of the top of the support plate are fixedly connected with limiting rods, and the other end of the limiting rods extends through to the top of the U-shaped plate.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. This utility model, by setting up a U-shaped plate, a first support block, a rotating shaft, an elliptical component, a first motor, a support plate, a fixed rod, a cutting blade, a fixed block, and a first spring, allows the radius change of the elliptical component during rotation to drive the cutting blade to achieve stable reciprocating cutting. Combined with the reset effect of the first spring, it significantly improves the cutting frequency and efficiency, solving the problem that the current production of composite film bags generally uses manual cutting. This operation mode not only has the problem of low cutting efficiency, but is also prone to deviation of the cutting position from the preset standard due to operational errors, directly affecting the connection accuracy of subsequent bag making processes, and ultimately restricting the overall production efficiency of plastic bags. It achieves the effect of fixed cutting of composite film bags.

[0013] 2. By setting a fixing component and using the elastic pressing structure of multiple sets of second springs and fixing plates, this utility model can adapt to composite film bags of different thicknesses, avoiding uneven manual pressing and easy loosening that could cause the film bag to slide or wrinkle. The continuous tension of the second springs ensures that the fixing plate always fits smoothly against the surface of the film bag, ensuring that the film bag does not shift laterally or stretch longitudinally during cutting.

[0014] 3. This utility model solves the defects of uneven feeding speed, easy fatigue and poor length control of manual feeding by setting up a conveying component and through the mechanized feeding design of the second motor and the winding rod. The second motor drives the winding rod to rotate at a uniform speed, which can accurately control the conveying speed and length of the film bag and ensure that the film bag size is consistent each time it is cut. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a three-dimensional structural diagram of the conveying component of this utility model; Figure 3 This is a three-dimensional structural diagram of the fixing component of this utility model.

[0016] In the diagram: 1. Workbench; 2. U-shaped plate; 3. First support block; 4. Rotating shaft; 5. Elliptical component; 6. First motor; 7. Support plate; 8. Fixing rod; 9. Cutting blade; 10. Fixing block; 11. First spring; 12. Fixing assembly; 121. Fixing plate; 122. Second spring; 123. T-shaped plate; 13. Conveying assembly; 131. Second support block; 132. Second motor; 133. Winding rod; 14. Third support block; 15. Transmission roller; 16. First connecting rod; 17. First transmission wheel; 18. Second connecting rod; 19. Second transmission wheel; 20. Belt; 21. Damper; 22. Limiting rod. Detailed Implementation

[0017] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0018] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0019] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments.

[0020] Secondly, this utility model is described in detail with reference to the schematic diagrams. When describing the embodiments of this utility model, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not adhering to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of this utility model. In addition, actual manufacturing should include the three-dimensional spatial dimensions of length, width, and depth.

[0021] Example 1 Reference Figure 1-3 This is the first embodiment of the present invention, which provides a bag cutting device for the production and processing of composite film bags. The device includes a workbench 1, a U-shaped plate 2 fixedly connected to the top of the workbench 1, first support blocks 3 fixedly connected to both sides of the top of the U-shaped plate 2, a rotating shaft 4 movably connected to the inner side of the first support blocks 3, an elliptical part 5 provided on the inner side of the first support blocks 3, the two ends of the elliptical part 5 fixedly connected to the inner side of the rotating shaft 4, a first motor 6 fixedly connected to the front of the front first support block 3, the output of the first motor 6 fixedly connected to the outer end of the front rotating shaft 4, a support plate 7 provided on the inner side of the U-shaped plate 2, a fixing rod 8 fixedly connected to the top of the support plate 7, a cutting blade 9 fixedly connected to the bottom of the support plate 7, a fixing block 10 fixedly connected to the top of the fixing rod 8, a first spring 11 fixedly connected to the bottom of the fixing block 10, the other end of the first spring 11 connected to the top of the U-shaped plate 2, the first spring 11 sleeved on the surface of the fixing rod 8, a fixing assembly 12 provided at the bottom of the support plate 7, and a conveying assembly 13 provided on the right side of the top of the workbench 1.

[0022] Specifically, compared to the problems of low efficiency and large error in traditional manual cutting, this equipment completely replaces manual knife operation through the core design of elliptical component 5 driving, mechanized cutting and automatic conveying. The radius change of elliptical component 5 during rotation can drive the cutting blade 9 to achieve stable reciprocating cutting. With the reset effect of the first spring 11, the cutting frequency and efficiency are greatly improved.

[0023] Furthermore, the workbench 1 and the U-shaped plate 2 form a support frame. The first support block 3 provides an installation reference for the rotating shaft 4 and the elliptical part 5. The first motor 6 drives the rotating shaft 4 to rotate, and the rotating shaft 4 drives the inner elliptical part 5 to rotate synchronously. After the fixed block 10 is pressed, it pushes the support plate 7 and the cutting blade 9 down through the fixed rod 8 to complete the cutting of the composite film bag. After cutting, the short axis end of the elliptical part 5 turns downward, the first spring 11 elastically resets, and pulls the fixed block 10, the fixed rod 8 and the cutting blade 9 up to form a continuous reciprocating cutting action. At the same time, the fixed component 12 presses the film bag before cutting, and the conveying component 13 conveys the film bag at a uniform speed to the direction of the cutting blade 9 to realize automated continuous bag cutting.

[0024] Example 2 In the second embodiment of this utility model, the fixing component 12 includes a fixing plate 121, a second spring 122 and a T-shaped plate 123. The fixing plates 121 are all disposed on both sides of the bottom of the support plate 7. The second spring 122 is fixedly connected to the top of the fixing plate 121. The other end of the second spring 122 is connected to the bottom of the support plate 7. Several second springs 122 are provided and are distributed in a rectangular and equidistant manner.

[0025] Specifically, the fixing component 12, through the elastic pressing structure of multiple sets of second springs 122 and fixing plate 121, can adapt to composite film bags of different thicknesses, avoiding uneven manual pressing pressure and easy loosening that could cause the film bag to slide or wrinkle. The continuous tension of the second springs 122 ensures that the fixing plate 121 always fits smoothly against the surface of the film bag, ensuring that the film bag does not shift laterally or stretch longitudinally during cutting. The rectangularly distributed springs allow the pressure to evenly cover the cutting area of ​​the film bag, further reducing cutting errors caused by local wrinkles and providing a stable material fixing foundation for precise cutting.

[0026] Furthermore, the fixed plate 121 is suspended at the bottom of the support plate 7 and is elastically connected to the support plate 7 through several sets of second springs 122. When the elliptical piece 5 pushes the support plate 7 down, the fixed plate 121 contacts the surface of the composite film bag before the cutting blade 9. As the support plate 7 continues to move down, the second springs 122 are compressed and generate an upward reaction force, so that the fixed plate 121 tightly presses the film bag onto the surface of the workbench 1, restricting the displacement of the film bag. After the cutting is completed, the support plate 7 rises under the action of the first spring 11, and the second springs 122 reset synchronously, driving the fixed plate 121 to detach from the film bag, reserving space for the next feeding and cutting.

[0027] Example 3 In the third embodiment of this utility model, the conveying assembly 13 includes a second support block 131, a second motor 132, and a winding rod 133. The second support block 131 is fixedly connected to both sides of the top right side of the workbench 1. The second motor 132 is fixedly connected to the front of the front second support block 131. The winding rod 133 is fixedly connected to the output end of the second motor 132.

[0028] Specifically, the conveying assembly 13 solves the defects of uneven feeding speed, easy fatigue, and poor length control of manual feeding through the mechanized feeding design of the second motor 132 and the winding rod 133. The second motor 132 drives the winding rod 133 to rotate at a uniform speed, which can accurately control the conveying speed and length of the film bag, ensuring that the film bag size is consistent each time it is cut. The winding conveying of the winding rod 133 can also prevent the film bag from being loosely piled up on the surface of the workbench 1, so that the film bag always maintains a flat conveying state, reducing the cutting interruption caused by material disorder, and further improving the overall production continuity and efficiency.

[0029] Furthermore, the second support block 131 is symmetrically fixed on the right side of the workbench 1 to provide rotational support for the winding rod 133. The free end of the composite film bag is fixed on the surface of the winding rod 133. After the second motor 132 is started, its output end drives the winding rod 133 to rotate at a constant speed in a fixed direction, so that the film bag moves smoothly along the surface of the workbench 1 towards the cutting blade 9. By setting the speed of the second motor 132, the film bag can be conveyed to a fixed length, providing material support for precise cutting.

[0030] Working principle: In use, the workbench 1 and the U-shaped plate 2 form a support frame. The first support block 3 provides an installation reference for the rotating shaft 4 and the elliptical part 5. The first motor 6 drives the rotating shaft 4 to rotate, and the rotating shaft 4 drives the inner elliptical part 5 to rotate synchronously. After the fixed block 10 is pressed, it pushes the support plate 7 and the cutting blade 9 down through the fixed rod 8 to complete the cutting of the composite film bag. After cutting, the short axis end of the elliptical part 5 turns downward, the first spring 11 elastically returns to its original position, and pulls the fixed block 10, the fixed rod 8 and the cutting blade 9 up, forming a continuous reciprocating cutting action. At the same time, when the elliptical part 5 pushes the support plate... As the support plate 7 descends, the fixing plate 121 contacts the surface of the composite film bag before the cutting blade 9. As the support plate 7 continues to move downward, the second spring 122 is compressed and generates an upward reaction force, causing the fixing plate 121 to tightly press the film bag onto the surface of the worktable 1, limiting the displacement of the film bag. After cutting, the support plate 7 rises under the action of the first spring 11, and the second spring 122 returns to its original position, causing the fixing plate 121 to detach from the film bag, reserving space for the next feeding and cutting. The second support block 131 is symmetrically fixed on the right side of the worktable 1, providing rotational support for the winding rod 133. The free end of the composite film bag is fixed to the surface of the winding rod 133. When the second motor 132 drives the winding rod 133 to rotate, the rear end of the winding rod 133 drives the second transmission wheel 19 to rotate synchronously through the second connecting rod 18. The first transmission wheel 17 meshes with the second transmission wheel 19 through the belt 20 and rotates synchronously with the second transmission wheel 19. The first transmission wheel 17 drives the transmission roller 15 to rotate through the first connecting rod 16, so that the rotation speed of the transmission roller 15 is perfectly matched with that of the winding rod 133. When the two rotate synchronously, the winding of the film bag is balanced with that of the transmission roller 15. A stable conveying tension is formed to ensure that the film bag does not stretch or loosen during the conveying process, providing tension guarantee for precise cutting. This achieves the effect of fixed cutting of the composite film bag. Then, the damper 21 is vertically fixed between the top of the fixed plate 121 and the bottom of the support plate 7. The second spring 122 is sleeved on the outside of the damper 21, forming a composite structure of elastic buffer and damping speed control. At the same time, when the elliptical part 5 drives the support plate 7 to move up and down, the limiting rod 22 slides synchronously along the guide hole, forming a rigid guiding constraint to prevent the support plate 7 from tilting to the left, right or forward and backward.

[0031] In summary, this utility model, by setting up a U-shaped plate 2, a first support block 3, a rotating shaft 4, an elliptical part 5, a first motor 6, a support plate 7, a fixing rod 8, a cutting blade 9, a fixing block 10, and a first spring 11, allows the radius change of the elliptical part 5 during rotation to drive the cutting blade 9 to achieve stable reciprocating cutting. Combined with the reset effect of the first spring 11, this significantly improves the cutting frequency and efficiency, solving the problem that the current production of composite film bags generally uses manual cutting. This operating mode not only suffers from low cutting efficiency but is also prone to deviation from the preset standard due to operational errors, directly affecting the connection accuracy of subsequent bag-making processes and ultimately restricting the overall production efficiency of plastic bags.

[0032] It should be noted that (motor, damper, spring) are existing devices or equipment, or devices or equipment that can be implemented by existing technology. The power supply, connection method, usage method, power source, fixing method, installation method, control method, etc. of the device, as well as the materials of each accessory and the selection of various parameters are common knowledge to those skilled in the art, and therefore will not be described in detail in this application document.

[0033] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape and proportion of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of this utility model. The order or sequence of any process or method steps may be changed or reordered according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structural equivalents but also equivalent structures. Without departing from the scope of this invention, other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments. Therefore, this invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0034] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the best mode of carrying out the present invention as currently considered, or those features that are not relevant to implementing the present invention) may be omitted.

[0035] It should be understood that numerous specific implementation decisions can be made during the development of any practical implementation, such as in any engineering or design project. Such development efforts may be complex and time-consuming, but for those skilled in the art who benefit from this disclosure, the development effort will be a routine work of design, manufacturing, and production without requiring much experimentation.

[0036] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model 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 solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A bag-cutting device for the production and processing of composite film bags, comprising a workbench (1), characterized in that: A U-shaped plate (2) is fixedly connected to the top of the workbench (1). First support blocks (3) are fixedly connected to both sides of the top of the U-shaped plate (2). A rotating shaft (4) is movably connected to the inner side of the first support block (3). An elliptical part (5) is provided on the inner side of the first support block (3). The two ends of the elliptical part (5) are fixedly connected to the inner side of the rotating shaft (4). A first motor (6) is fixedly connected to the front of the first support block (3). The output of the first motor (6) is fixedly connected to the outer end of the rotating shaft (4) on the front side. A support plate is provided on the inner side of the U-shaped plate (2). (7) A fixing rod (8) is fixedly connected to the top of the support plate (7), a cutting blade (9) is fixedly connected to the bottom of the support plate (7), a fixing block (10) is fixedly connected to the top of the fixing rod (8), a first spring (11) is fixedly connected to the bottom of the fixing block (10), the other end of the first spring (11) is connected to the top of the U-shaped plate (2), the first spring (11) is sleeved on the surface of the fixing rod (8), a fixing component (12) is provided at the bottom of the support plate (7), and a conveying component (13) is provided on the right side of the top of the workbench (1).

2. The bag cutting equipment for composite film bag production and processing according to claim 1, characterized in that: The fixing component (12) includes a fixing plate (121), a second spring (122) and a T-shaped plate (123). The fixing plates (121) are all located on both sides of the bottom of the support plate (7). The second spring (122) is fixedly connected to the top of the fixing plate (121). The other end of the second spring (122) is connected to the bottom of the support plate (7). There are several second springs (122) and they are distributed in a rectangular shape at equal intervals.

3. The bag cutting equipment for composite film bag production and processing according to claim 1, characterized in that: The conveying assembly (13) includes a second support block (131), a second motor (132), and a winding rod (133). The second support block (131) is fixedly connected to both sides of the top right side of the workbench (1). The second motor (132) is fixedly connected to the front of the second support block (131). The winding rod (133) is fixedly connected to the output end of the second motor (132).

4. The bag cutting equipment for composite film bag production and processing according to claim 3, characterized in that: The workbench (1) has a third support block (14) fixedly connected to both sides of the top right side, and a transmission roller (15) is movably connected to the inner side of the third support block (14).

5. The bag cutting equipment for composite film bag production and processing according to claim 4, characterized in that: The back of the transmission roller (15) is fixedly connected to a first connecting rod (16), the other end of the first connecting rod (16) extends through to the back of the third support block (14) on the rear side, the rear end of the first connecting rod (16) is fixedly connected to a first transmission wheel (17), the rear end of the winding rod (133) is fixedly connected to a second connecting rod (18), the other end of the second connecting rod (18) extends through to the back of the second fixing block (10) on the rear side, the rear end of the second connecting rod (18) is fixedly connected to a second transmission wheel (19), and the first transmission wheel (17) and the second transmission wheel (19) are fitted with a belt (20).

6. The bag cutting equipment for composite film bag production and processing according to claim 2, characterized in that: A damper (21) is fixedly connected to the top of the fixed plate (121), and the other end of the damper (21) is fixedly connected to the bottom of the support plate (7). The second spring (122) is sleeved on the surface of the damper (21).

7. The bag cutting equipment for composite film bag production and processing according to claim 1, characterized in that: Limiting rods (22) are fixedly connected to both sides of the top of the support plate (7), and the other end of the limiting rods (22) extends through to the top of the U-shaped plate (2).

Images