Leftover material cutting device for thin film production

Abstract

The utility model discloses a rim charge cutting device for thin film production, which relates to the technical field of thin film production, and comprises a cutter arranged above an assembly line table top and a flexible lifting piece arranged between the assembly line table top and the cutter, and the flexible lifting piece comprises a support arm arranged between the assembly line table top and the cutter. A through hole is formed in the position, located under the cutting edge of the cutter, of the supporting arm, and a piece of flexible blocking cloth used for abutting against the cutting edge of the cutter is arranged at the position of the through hole. The mechanical structure of the support arms, the through holes and the flexible blocking cloth replaces traditional pneumatic / laser dependence, the pure mechanical structure does not need external energy, and shutdown caused by power failure is avoided; wherein the flexible blocking cloth provides elastic buffering, hard contact between the cutter and the table top is reduced, and the risk that a cutting edge is broken and damaged is reduced; the through hole allows the cutter to shift slightly during vibration, and stress concentration caused by rigid constraint is avoided.

Description

Technical Field

[0001] This utility model relates to the field of thin film production technology, specifically to an edge cutting device for thin film production. Background Technology

[0002] Plastic film has a wide range of applications. For example, it can be processed into various types of packaging bags using center sealing and back sealing machines. Specifically, the production process of plastic film with a center sealing machine is as follows:

[0003] 1) Feeding: Pull the roll of plastic film (such as PE, PP, composite film, etc.) to the bag making station.

[0004] 2) Folding and center seal welding: The film is folded in half by guide rollers, and the middle part is longitudinally sealed by a heat-pressing device (such as a heat-sealing knife) to form the center seal line of the bag.

[0005] 3) Cooling and shaping: The sealed part is solidified by a cooling device to ensure a firm seal.

[0006] 4) Cross-cutting and shaping: Cut horizontally according to the preset length to form an independent center-sealed bag.

[0007] In the initial feeding stage, if the film width exceeds the required width for the bag product, the film edges need to be cut to ensure the film width is suitable for subsequent folding and sealing processes. A common solution is to add a cutting device with a blade. This blade typically uses a hard-contact cutting method (such as flatbed cutting). However, during high-speed operation, vibrations from the production line table can cause the blade to collide with the table, accelerating wear. Damaged blades require machine shutdown and replacement, impacting production efficiency. Therefore, improved cutting equipment could include a floating blade design or a laser slitting design. For example, with a floating blade design, the blade makes elastic contact with the film via a pneumatic device, preventing collisions between the blade and the table.

[0008] However, the aforementioned cutting equipment requires a pneumatic device or laser equipment to operate. Pneumatic devices rely on a stable air source, and the failure of the air pump during a power outage can cause the production line to stop. Furthermore, air pressure fluctuations can easily lead to uneven cutting depths, and the maintenance costs of pneumatic components are also high. Laser equipment is expensive to purchase and consumes a lot of energy during operation.

[0009] To address this issue, we propose an edge cutting device for thin film production. Utility Model Content

[0010] The purpose of this invention is to solve the problems in the prior art by proposing an edge cutting device for film production. The cutting device, through the mechanical structure design of the support arm and the flexible baffle, can effectively avoid production stoppage caused by power outages or other malfunctions. During operation, the through holes on the support arm can provide space for the vibration path of the cutter, and the flexible baffle can apply a vertical elastic force to the cutter, effectively preventing the cutter from directly contacting the production line table and causing damage.

[0011] To solve the above problems, this utility model provides the following technical solution:

[0012] A film production edge cutting device includes a cutter disposed above the production line table and a flexible support member disposed between the production line table and the cutter. The flexible support member includes a support arm disposed between the production line table and the cutter, and the support arm has a through hole located directly below the blade of the cutter. A flexible baffle is provided at the through hole for the blade of the cutter to abut against each other.

[0013] As a further embodiment of this utility model: the flexible baffle is designed as a sleeve structure that is adapted to the size of the support arm, and the flexible baffle of the sleeve structure has a wear-resistant layer on the side near the cutter.

[0014] As a further embodiment of this utility model: the cutting device also includes an adapter for mounting the cutter. The adapter includes an adapter seat with a connecting block on it. The bottom of the connecting block has a notch for inserting the cutter handle. The connecting block has a first bolt with one end threaded through the notch, so that when the first bolt is tightened, the cutter handle is pressed and locked.

[0015] As a further embodiment of this utility model: the adapter seat is provided with an assembly slot, the connecting block is slidably mounted on the assembly slot by means of the protrusions on both sides, and the adapter seat is provided with a second bolt that can be threaded into the assembly slot at one end, so that when the second bolt is tightened, the connecting block is pressed and locked.

[0016] As a further embodiment of this utility model: the support arm is designed in an L-shape, and one end of the L-shaped support arm forms a carrier for the installation of the flexible baffle, while the other end is a telescopic structure, and the telescopic direction is parallel to the sliding direction of the connecting block.

[0017] As a further embodiment of this utility model: the cutting device also includes bases respectively disposed on both sides of the assembly line table, and a shaft is provided between the two bases. The shaft can move along its axial direction, and the adapter and the support arm are both mounted on the shaft.

[0018] As a further embodiment of this utility model: a third bolt is threaded on any base, and the axial direction of the third bolt is parallel to the axial direction of the shaft. A limiting plate is provided on the outer side of the third bolt, and the limiting plate is fixedly connected to the shaft.

[0019] As a further embodiment of this utility model, the cutting device also includes pressure strips disposed on the assembly line table. There are at least two sets of pressure strips, which are arranged along the travel direction of the assembly line table and are located on both sides of the cutter.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. The mechanical structure of support arm + through hole + flexible baffle replaces the traditional pneumatic / laser reliance. This pure mechanical structure does not require external energy and avoids shutdown due to power outages. Among them, the flexible baffle provides elastic cushioning, reduces hard contact between the cutter and the table, and reduces the risk of blade breakage. The through hole allows the cutter to deviate slightly during vibration, avoiding stress concentration caused by rigid constraints.

[0022] 2. The flexible guard is designed as a sleeve structure and an additional wear-resistant layer is added. The wear-resistant layer reduces friction and wear between the guard and the blade, extending its service life. The sleeve structure wraps around the edge of the support arm through hole, ensuring that the flexible guard is in full circumference contact with the blade and avoiding localized wear.

[0023] 3. The adapter locks the cutter handle with the first bolt, adapting to cutters of different sizes / shapes, thus expanding the applicable scenarios of the equipment;

[0024] 4. The connecting block is slidably installed through the protrusion, and the second bolt is used to lock its position. At the same time, an L-shaped support arm with a telescopic structure is set. The telescopic direction is parallel to the sliding direction of the connecting block. The telescopic structure cooperates with the sliding of the connecting block so that the flexible baffle can always be located directly below the cutter.

[0025] 5. By controlling the axial movement of the shaft through the third bolt and the limiting plate, not only can the position of the cutter be adjusted to adapt to the cutting of different sizes of film, but the limiting plate is also fixed to the shaft to prevent accidental displacement of the shaft due to equipment vibration. Attached Figure Description

[0026] The present invention will be further described below with reference to the accompanying drawings.

[0027] Figure 1 This is a schematic diagram of the three-dimensional structure of this utility model. Figure 1 ;

[0028] Figure 2 This is a schematic diagram of the three-dimensional structure of the flexible baffle in this utility model;

[0029] Figure 3This is a three-dimensional structural diagram of the cutter and connecting block in this utility model;

[0030] Figure 4 This is a schematic diagram of the three-dimensional structure of this utility model. Figure 2 ;

[0031] Figure 5 This is a three-dimensional structural diagram of the working state of this utility model.

[0032] In the diagram: 1. Cutter; 2. Support arm; 3. Through hole; 4. Flexible baffle; 5. Wear-resistant layer; 6. Adapter seat; 7. Connecting block; 8. First bolt; 9. Assembly slot; 10. Second bolt; 11. Base; 12. Shaft; 13. Third bolt; 14. Limiting plate; 15. Pressure strip; a. Membrane. Detailed Implementation

[0033] 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.

[0034] like Figures 1-5 As shown, an edge cutting device for film production includes bases respectively disposed on both sides of the production line table, and a shaft 12 disposed between the two bases 11. The shaft 12 is designed to be movable and can move along its own axial direction. An adapter and a flexible support are mounted on the shaft 12, wherein:

[0035] like Figure 1 and Figure 3 As shown, the adapter includes an adapter seat 6 mounted on the shaft 12. The adapter seat 6 is provided with a connecting block 7. A notch is opened at the bottom of the connecting block 7, and a cutter 1 can be installed in the notch. Specifically, the handle of the cutter 1 is inserted into the notch, and a first bolt 8 is provided on the connecting block 7, one end of which can be threaded through the notch. When the first bolt 8 is tightened, it can press and lock the handle of the cutter 1. When it is necessary to adjust the position of the cutter 1 or replace it with a new cutter 1, the first bolt 8 can be driven to loosen, releasing the lock on the handle of the cutter 1, so that adjustment or replacement can be performed.

[0036] like Figure 1As shown, the flexible support component includes a support arm 2 positioned between the assembly line table and the cutter 1. The support arm 2 is mounted on a bushing, and a through hole 3 is provided at the position directly below the blade of the cutter 1. A flexible baffle 4 is provided at the through hole 3 for the blade of the cutter 1 to contact with the flexible baffle 4. In the initial state, the blade of the cutter 1 contacts the flexible baffle 4. When the cutter 1 vibrates during operation, the through hole provides space for the cutter 1 to move up and down, and due to the presence of the flexible baffle 4, the cutter 1 can be subjected to an elastic force in the vertical direction, avoiding damage caused by contact and collision between the cutter 1 and the assembly line table.

[0037] During the slitting process, film a will be positioned between support arm 2 and cutter 1. This state can be determined by... Figure 5 To illustrate, in this state, film a moves along the travel direction of the production line table, and cutter 1 cuts off the side portion in contact with film a. To ensure the cutting stability of film a, pressure strips 15 can be provided on the production line table to confine film a to the production line table. Preferably, there are at least two sets of pressure strips 15, which are arranged along the travel direction of the production line table and are located on both sides of cutter 1.

[0038] This application utilizes a combination design of support arm 2 and flexible baffle 4. Support arm 2 is located between the assembly line table and cutter 1, and the through hole 3 on support arm 2 provides movement space for the vibration movement of cutter 1. Flexible baffle 4 applies a vertical elastic force to cutter 1, avoiding direct contact between the blade of cutter 1 and the horizontal assembly line table. Compared with the cutting operation in the prior art that relies on electrical components and other parts, this application relies on a mechanical cutting mechanism to cut film a. It can still work in the event of power failure or other unexpected situations, without delaying the production progress and ensuring production efficiency.

[0039] like Figure 2 As shown, preferably, to simplify the installation of the flexible baffle 4 on the support arm 2, the flexible baffle 4 can be designed as a sleeve structure adapted to the size of the support arm 2. In use, the elastic, sleeve-structured flexible baffle 4 is simply fitted onto the corresponding position on the support arm 2. Furthermore, to ensure the long-term use of the flexible baffle 4, a wear-resistant layer 5 is provided on the side of the sleeve-structured flexible baffle 4 near the cutter 1. The material composition of the wear-resistant layer 5 can be selected from existing materials; to avoid unnecessary detail, this will not be elaborated upon here.

[0040] like Figure 1 and Figure 4As shown, to adapt the cutter 1 to different usage scenarios, an assembly slot 9 is provided on the adapter 6, allowing the connecting block 7 to slide on the assembly slot 9 based on the protrusions on both sides. The adapter 6 also has a second bolt 10 with one end threaded through the assembly slot 9, so that when the second bolt 10 is tightened, it achieves pressure locking of the connecting block 7. Figure 4 As shown, when the position of the connecting block 7 needs to be adjusted on the mounting slot 9, the second bolt 10 can be loosened first to release the locking state of the connecting block 7. Then, the connecting block 7 can be moved to the designated position, and the second bolt 10 can be tightened to lock the connecting block 7 in that position. Correspondingly, when the position of the connecting block 7 and the cutter 1 is adjustable, the support arm 2 is designed as an L-shape. One end of the L-shaped support arm 2 forms a carrier for the installation of the flexible baffle 4. The carrier has the aforementioned through hole 3. The other end of the L-shaped support arm 2 is a telescopic structure, and the telescopic direction is parallel to the sliding direction of the connecting block 7. Therefore, after the connecting block 7 is adjusted to the corresponding position, the support arm 2 can be extended or retracted so that the flexible baffle 4 at the carrier is always positioned below the cutter 1 for use with the cutter 1.

[0041] For example Figure 1 and Figure 4 As shown, furthermore, in order to allow the cutter 1 to be adjusted along the width direction of the production line table to adapt to cutting films a of different sizes, a third bolt 13 is threaded onto any of the bases 11, and the axial direction of the third bolt 13 is parallel to the axial direction of the shaft 12. A limiting plate 14 is rotatably sleeved on the outside of the third bolt 13, and the limiting plate 14 is fixedly connected to the shaft 12. Driving the third bolt 13 to rotate will drive the limiting plate 14 to move, the movement of the limiting plate 14 will drive the shaft 12 to move, and the movement of the shaft 12 will drive the position of the cutter 1 to move, realizing the cutting of films a of different sizes by the cutter 1. It is convenient to use and has a wide range of applications.

[0042] The above description provides a detailed account of one embodiment of the present invention. However, this description is merely a preferred embodiment and should not be construed as limiting the scope of the present invention. All equivalent variations and improvements made within the scope of the claims of the present invention should still fall within the patent coverage of the present invention.

Claims

1. An edge cutting device for film production, characterized in that, It includes a cutter (1) located above the assembly line table and a flexible support member located between the assembly line table and the cutter (1). The flexible support member includes a support arm (2) located between the assembly line table and the cutter (1), and the support arm (2) has a through hole (3) located directly below the blade of the cutter (1). A flexible baffle (4) is provided at the through hole (3) for the blade of the cutter (1) to abut against each other.

2. The edge cutting device for film production according to claim 1, characterized in that, The flexible baffle (4) is designed as a sleeve structure that is adapted to the size of the support arm (2), and the flexible baffle (4) of the sleeve structure is provided with a wear-resistant layer (5) on the side near the cutter (1).

3. The edge cutting device for film production according to claim 1 or 2, characterized in that, The cutting device also includes an adapter for mounting the cutter (1). The adapter includes an adapter seat (6) and a connecting block (7) on the adapter seat (6). The bottom of the connecting block (7) has a notch for inserting the handle of the cutter (1), and the connecting block (7) has a first bolt (8) with one end threaded through the notch, so that when the first bolt (8) is tightened, the handle of the cutter (1) is pressed and locked.

4. The edge cutting device for film production according to claim 3, characterized in that, The adapter (6) has an assembly slot (9) and the connecting block (7) is slidably mounted on the assembly slot (9) by means of the protrusions on both sides. The adapter (6) has a second bolt (10) with one end threaded through into the assembly slot (9) so that when the second bolt (10) is tightened, it can press and lock the connecting block (7).

5. The edge cutting device for film production according to claim 4, characterized in that, The support arm (2) is designed in an L-shape. One end of the L-shaped support arm (2) forms a carrier for the installation of the flexible baffle (4), and the other end is a telescopic structure. The telescopic direction is parallel to the sliding direction of the connecting block (7).

6. The edge cutting device for film production according to claim 3, characterized in that, The cutting device also includes bases (11) respectively located on both sides of the assembly line table, and a shaft (12) is provided between the two bases (11). The shaft (12) can move along its axial direction. The adapter (6) and the support arm (2) are both mounted on the shaft (12).

7. The edge cutting device for film production according to claim 6, characterized in that, A third bolt (13) is threaded on any of the bases (11), and the axial direction of the third bolt (13) is parallel to the axial direction of the shaft (12). A limiting plate (14) is provided on the outer side of the third bolt (13), and the limiting plate (14) is fixedly connected to the shaft (12).

8. The edge cutting device for film production according to claim 1, characterized in that, The cutting device also includes pressure strips (15) disposed on the assembly line table. There are at least two sets of pressure strips (15), which are arranged along the travel direction of the assembly line table and are located on both sides of the cutter (1).

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