Plastic film cutting device

Abstract

The utility model discloses a plastic film cutting device which comprises a bottom plate, the bottom plate is installed on external equipment, a telescopic mechanism is arranged on the bottom plate and comprises a transverse plate, a fixing mechanism, a sliding sleeve, a driving wheel, a rotating shaft, a driven wheel, a pressing disc, a pressing spring, a handle and a cutting mechanism, the fixing mechanism is connected to the transverse plate and the bottom plate in a matched mode, and the sliding sleeve is arranged on the sliding sleeve. The sliding sleeve is connected to the transverse plate in a sliding mode, the telescopic mechanism achieves automatic flattening and fixing of a plastic film through cooperation of the transverse plate, the sliding sleeve, the driving wheel, the rotating shaft, the driven wheel, the pressing disc and the compressed spring, the principles of gear transmission and elastic pressing are utilized, and the automatic flattening function of the pressing disc is achieved through meshing of the driving wheel and the driven wheel; and meanwhile, proper pressing force is provided by the pressure spring, so that the plastic film is ensured to be flatly fixed, and favorable conditions are created for subsequent cutting.

Description

Technical Field

[0001] The utility model relates to the technical field of plastic film cutting, and more specifically, to a plastic film cutting device. Background Art

[0002] Plastic film is a kind of film material widely used in packaging, agriculture, construction and other fields. Its main advantages are light weight, high strength, good transparency, excellent barrier properties, etc. In practical applications, plastic film usually needs to be cut according to certain sizes and shapes to meet different usage requirements, such as food packaging, agricultural mulch, building protective film, etc. In order to improve the cutting efficiency and quality of plastic film, special cutting devices are usually used, such as roller cutters, laser cutters, electric heat cutters, etc. These cutting devices apply shear force or hot melt to the plastic film through knives or heat sources, so that it breaks along the predetermined tangent line or contour, thereby achieving fast and precise cutting of the plastic film. However, during the cutting process, due to the softness and toughness of the plastic film, wrinkles and wrinkles often occur, especially in the winding state, the wrinkles on the surface of the plastic film are more obvious. These wrinkles not only affect the appearance quality of the plastic film, but also cause the deviation and irregularity of the cutting line, and even cause local tearing or faulting of the plastic film, which seriously affects the cutting accuracy and strength. If these wrinkles cannot be effectively eliminated or suppressed, it will be difficult to obtain a flat, smooth and regular incision, thus affecting the performance and aesthetics of the plastic film products. Summary of the invention

[0003] In view of the problems existing in the prior art, the utility model provides a plastic film cutting device to solve the technical problems mentioned in the background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a plastic film cutting device, comprising a base plate, which is installed on an external device, and a telescopic mechanism is arranged on the base plate, and the telescopic mechanism comprises a transverse plate, a fixing mechanism, a sliding sleeve, a driving wheel, a rotating shaft, a driven wheel, a pressure plate, a compression spring, a handle and a cutting mechanism, the fixing mechanism is cooperatively connected to the transverse plate and the base plate, the sliding sleeve is slidably connected to the transverse plate, the driving wheel is rotatably connected to the sliding sleeve, the driven wheel is clamped on the sliding sleeve, the driving wheel is meshed with the driven wheel, the pressure plate is installed on the driven wheel, the compression spring is installed on the pressure plate, the compression spring contacts the plastic film, the rotating shaft is installed on the driving wheel, the handle is rotatably connected to the rotating shaft, and the cutting mechanism is cooperatively connected to the sliding sleeve.

[0005] The utility model is further configured that the cutting mechanism comprises a lifting sleeve and a cutting knife, the lifting sleeve is slidably connected to the sliding sleeve, and the cutting knife is slidably connected to the sliding sleeve. The design of the cutting mechanism ensures continuous cutting of the plastic film.

[0006] The utility model is further configured that the sliding sleeve is provided with a spring, the spring abuts against the sliding sleeve, the lifting sleeve is provided with a semicircular disk, the handle is provided with a contact head, the contact head is supported on the semicircular disk, and the design of the spring ensures the sliding continuity of the sliding sleeve.

[0007] The utility model is further configured such that the fixing mechanism includes a side plate and a top rod, two side plates are provided, and the two side plates are respectively installed on both sides of the bottom plate, the transverse plate is slidably connected to the two side plates, and the top rod abuts against the transverse plate. The design of the fixing mechanism ensures the convenience of fixing.

[0008] The utility model is further configured that an inner sleeve is provided in the lateral plate, an insertion rod is provided on the top rod, and the insertion rod is slidably connected in the inner sleeve. The design of the insertion rod ensures the convenience of fixation.

[0009] The utility model is further configured that a plurality of one-way sheets are arranged inside the inner sleeve, a spiral groove is opened on the side of the insertion rod, and the one-way sheets are clamped in the spiral groove. The one-way sheets are designed for the convenience of one-way clamping.

[0010] The utility model is further configured that a telescopic disc is provided on the insertion rod, the telescopic disc and the insertion rod are coaxially arranged, and the design of the telescopic disc ensures the convenience of adjusting the telescopic insertion rod.

[0011] The utility model is further configured that the two side plates are respectively provided with reinforcing plates, the reinforcing plates are connected to the bottom plate, and the design of the reinforcing plates ensures the fixing effect of the side plates.

[0012] Compared with the prior art, the utility model provides a plastic film cutting device, which has the following beneficial effects:

[0013] 1. The telescopic mechanism realizes the automatic flattening and fixation of the plastic film through the cooperation of the transverse plate, sliding sleeve, driving wheel, rotating shaft, driven wheel, pressure plate and compression spring. This design utilizes the principle of gear transmission and elastic compression. Through the engagement of the driving wheel and the driven wheel, the automatic flattening function of the pressure plate is realized. At the same time, the compression spring provides appropriate compression force to ensure the flatness and fixation of the plastic film, creating favorable conditions for subsequent cutting.

[0014] 2. The cutting mechanism includes a lifting sleeve and a cutting knife, and through their cooperation, the automatic cutting of the plastic film is realized. This design cleverly utilizes the cooperation of the contact head and the semi-circular disk. By pulling the handle, the lifting and cutting action of the cutting knife is realized. It has a simple structure and is easy to operate. At the same time, the setting of the spring provides appropriate pressing force to ensure the close contact between the cutting knife and the plastic film, thereby improving the cutting accuracy and quality.

[0015] 3. The fixing mechanism includes a lateral plate, a top rod, an inner sleeve, an insertion rod, a one-way plate and a telescopic disk. Through their cooperation, the transverse plate and the bottom plate can be quickly fixed and disassembled. This design utilizes the ingenious cooperation of the one-way plate and the spiral groove. The force is applied by rotation where it needs to be fixed, and it is directly inserted where no force is required, which greatly improves the convenience of fixation. At the same time, it can also be easily unfastened by rotating along the spiral groove to achieve quick disassembly. The design of the fixing mechanism adapts to the actual needs of the plastic film cutting device and improves the practicability and operability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall structure of a plastic film cutting device in the utility model;

[0017] Figure 2 It is a structural schematic diagram of the telescopic mechanism in the utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the driven wheel and the pressure plate in the utility model;

[0019] Figure 4 It is a structural schematic diagram of the fixing mechanism in the utility model;

[0020] Figure 5 It is a schematic cross-sectional structural diagram of the fixing mechanism in the utility model.

[0021] In the figure: 1. bottom plate; 2. transverse plate; 3. sliding sleeve; 4. driving wheel; 5. rotating shaft; 6. driven wheel; 7. pressure plate; 8. compression spring; 9. handle; 10. lifting sleeve; 11. cutting knife; 12. spring; 13. semicircular disc; 14. contact head; 15. lateral plate; 16. push rod; 17. inner sleeve; 18. insertion rod; 19. one-way sheet; 20. spiral groove; 21. telescopic disc; 22. reinforcement plate. DETAILED DESCRIPTION

[0022] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present utility model will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0023] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meanings as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0024] In the present invention, unless otherwise specified, directions such as "up" and "down" are usually used in reference to the directions shown in the drawings, or in reference to the vertical, perpendicular or gravity direction; similarly, for ease of understanding and description, "left" and "right" are usually used in reference to the left and right shown in the drawings; "inside" and "outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned directions are not used to limit the present invention.

[0025] See also Figure 1-5 A plastic film cutting device comprises a bottom plate 1, the bottom plate 1 is mounted on an external device, a telescopic mechanism is arranged on the bottom plate 1, the telescopic mechanism comprises a transverse plate 2, a fixing mechanism, a sliding sleeve 3, a driving wheel 4, a rotating shaft 5, a driven wheel 6, a pressure plate 7, a compression spring 8, a handle 9 and a cutting mechanism, the fixing mechanism is cooperatively connected to the transverse plate 2 and the bottom plate 1, the sliding sleeve 3 is slidably connected to the transverse plate 2, the driving wheel 4 is rotatably connected to the sliding sleeve 3, the driven wheel 6 is clamped on the sliding sleeve 3, the driving wheel 4 is meshed on the driven wheel 6, and the pressure plate 7 is installed on the driven wheel 6 On, the compression spring 8 is installed on the pressure plate 7, the compression spring 8 is in contact with the plastic film, the rotating shaft 5 is installed on the driving wheel 4, the handle 9 is rotatably connected to the rotating shaft 5, the cutting mechanism is cooperatively connected to the sliding sleeve 3, the cutting mechanism includes a lifting sleeve 10 and a cutting knife 11, the lifting sleeve 10 is slidably connected to the sliding sleeve 3, the cutting knife 11 is slidably connected to the sliding sleeve 3, the sliding sleeve 3 is provided with a spring 12, the spring 12 is in contact with the sliding sleeve 3, the lifting sleeve 10 is provided with a semi-circular disk 13, the handle 9 is provided with a contact head 14, and the contact head 14 is pressed on the semi-circular disk 13.

[0026] In this embodiment, when cutting the plastic film, the driving wheel 4 is first rotated by rotating the rotating shaft 5. Since the two driven wheels 6 are respectively engaged with the driving wheel 4, the two pressure plates 7 can be driven to move toward the plastic film on the bottom plate 1, so that the compression spring 8 presses on the plastic film, thereby fixing the plastic film. Then, the handle 9 is pulled upward, and the abutment head 14 can be pressed against the semicircular disk 13 by rotating the steering wheel, so that the cutting knife 11 on the lifting sleeve 10 presses against the plastic film. Then, the cutting knife 11 can cut the plastic film by driving the sliding wheel to rotate, thereby completing the cutting process.

[0027] See also Figure 4 and Figure 5, as an implementation method of a plastic film cutting device for a fixing mechanism: the fixing mechanism includes a lateral plate 15 and a top rod 16, two lateral plates 15 are provided, and the two lateral plates 15 are respectively installed on both sides of the bottom plate 1, the transverse plate 2 is slidably connected to the two lateral plates 15, the top rod 16 abuts against the transverse plate 2, an internal sleeve 17 is provided in the lateral plate 15, an insertion rod 18 is provided on the top rod 16, the insertion rod 18 is slidably connected in the internal sleeve 17, a plurality of one-way sheets 19 are provided on the inside of the internal sleeve 17, a spiral groove 20 is opened on the side of the insertion rod 18, the one-way sheet 19 is stuck in the spiral groove 20, a telescopic disk 21 is provided on the insertion rod 18, the telescopic disk 21 and the insertion rod 18 are coaxially arranged, and reinforcing plates 22 are respectively provided on the two lateral plates 15, and the reinforcing plates 22 are connected to the bottom plate 1.

[0028] More specifically, when it is necessary to quickly install it on the transverse plate 2, since the internal sleeve 17 is installed on the lateral plate 15, the insertion rod 18 is then slidably connected to the internal sleeve 17. Since the single-row sheets are installed obliquely downward, the insertion rod 18 can be quickly inserted into the multiple one-way sheets 19, and then the top rod 16 can be pressed against the transverse plate 2. When the insertion rod 18 moves into place, since the multiple one-way sheets 19 are stuck in the spiral groove 20, the rotation of the telescopic disk 21 can drive the top rod 16 to press against the transverse plate 2. Therefore, it only needs to rotate and exert force in a fixed place, and it can be directly inserted into the position where no force is required, thereby ensuring the convenience of fixing. When it needs to be unlocked, it only needs to be rotated along the spiral groove 20 to complete the unlocking process.

[0029] In summary, when the overall equipment is in use or running: when cutting the plastic film, the driving wheel 4 is first rotated by rotating the rotating shaft 5. Since the two driven wheels 6 are respectively engaged with the driving wheel 4, the two pressure plates 7 can be driven to move toward the plastic film on the bottom plate 1, so that the compression spring 8 is pressed against the plastic film, thereby fixing the plastic film, and then the handle 9 is pulled upward. The steering direction can be rotated to make the abutment head 14 press against the semi-circular disk 13, so that the cutting knife 11 on the lifting sleeve 10 is pressed against the plastic film, and then the cutting knife 11 can cut the plastic film by driving the rotation of the sliding wheel, thereby completing the cutting process.

[0030] When it is necessary to quickly install it on the transverse plate 2, since the internal sleeve 17 is installed on the lateral plate 15, the insertion rod 18 is then slidably connected to the internal sleeve 17. Since the single-row sheets are installed obliquely downward, the insertion rod 18 can be quickly inserted into the multiple one-way sheets 19, and then the top rod 16 can be pressed against the transverse plate 2. When the insertion rod 18 moves into place, since the multiple one-way sheets 19 are stuck in the spiral groove 20, the rotation of the telescopic disk 21 can drive the top rod 16 to press against the transverse plate 2. Therefore, it only needs to rotate and exert force in a fixed place, and it can be directly inserted into the position where no force is required, thereby ensuring the convenience of fixing. When it needs to be unlocked, it only needs to be rotated along the spiral groove 20 to complete the unlocking process.

[0031] In all the schemes mentioned above, the connection between two parts can be selected according to actual conditions by welding, bolt and nut matching connection, bolt or screw connection or other well-known connection methods, which are not described here one by one. In the above, all fixed connections are preferably welded. Although the embodiments of the utility model have been shown and described, it can be understood by ordinary technicians in this field that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the utility model. The scope of the utility model is defined by the attached claims and their equivalents.

Claims

1. A plastic film cutting device, comprising a bottom plate (1), the bottom plate (1) being mounted on an external device, and characterized in that: The bottom plate (1) is provided with a telescopic mechanism, which comprises a transverse plate (2), a fixing mechanism, a sliding sleeve (3), a driving wheel (4), a rotating shaft (5), a driven wheel (6), a pressure plate (7), a compression spring (8), a handle (9) and a cutting mechanism. The fixing mechanism is cooperatively connected to the transverse plate (2) and the bottom plate (1); the sliding sleeve (3) is slidably connected to the transverse plate (2); the driving wheel (4) is rotationally connected to the sliding sleeve (3); the driven wheel (6) is clamped on the sliding sleeve (3); the driving wheel (4) is meshed with the driven wheel (6); the pressure plate (7) is mounted on the driven wheel (6); the compression spring (8) is mounted on the pressure plate (7); the compression spring (8) contacts the plastic film; the rotating shaft (5) is mounted on the driving wheel (4); the handle (9) is rotationally connected to the rotating shaft (5); and the cutting mechanism is cooperatively connected to the sliding sleeve (3).

2. A plastic film cutting device according to claim 1, characterized in that: The cutting mechanism comprises a lifting sleeve (10) and a cutting knife (11); the lifting sleeve (10) is slidably connected to the sliding sleeve (3); and the cutting knife (11) is slidably connected to the sliding sleeve (3).

3. A plastic film cutting device according to claim 2, characterized in that: The sliding sleeve (3) is provided with a spring (12), the spring (12) abuts against the sliding sleeve (3), the lifting sleeve (10) is provided with a semicircular disk (13), the handle (9) is provided with a contact head (14), and the contact head (14) abuts against the semicircular disk (13).

4. A plastic film cutting device according to claim 1, characterized in that: The fixing mechanism comprises a lateral plate (15) and a top rod (16), wherein two lateral plates (15) are provided, and the two lateral plates (15) are respectively mounted on two sides of the bottom plate (1), the transverse plate (2) is slidably connected to the two lateral plates (15), and the top rod (16) abuts against the transverse plate (2).

5. A plastic film cutting device according to claim 4, characterized in that: An inner sleeve (17) is provided in the lateral plate (15), an insertion rod (18) is provided on the top rod (16), and the insertion rod (18) is slidably connected in the inner sleeve (17).

6. A plastic film cutting device according to claim 5, characterized in that: A plurality of one-way sheets (19) are arranged inside the inner sleeve (17), a spiral groove (20) is provided on the side surface of the insertion rod (18), and the one-way sheets (19) are clamped in the spiral groove (20).

7. A plastic film cutting device according to claim 6, characterized in that: A telescopic disc (21) is provided on the insertion rod (18), and the telescopic disc (21) and the insertion rod (18) are coaxially arranged.

8. A plastic film cutting device according to claim 7, characterized in that: A reinforcing plate (22) is respectively provided on the two side plates (15), and the reinforcing plate (22) is connected to the bottom plate (1).

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