Film slitting device

Abstract

The utility model discloses a film slitting device which comprises a plurality of tensioning rollers and further comprises a guide rail, at least one slitting knife is installed on the guide rail, and a knife point of each slitting knife is located between every two adjacent tensioning rollers so as to slit a film between every two adjacent tensioning rollers. The film slitting device at least has the advantages that the film slitting quality is effectively improved, and tearing wrinkles are avoided.

Description

Technical Field

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

[0002] The description in this section merely provides background information related to the disclosure of the present utility model and does not constitute prior art.

[0003] The slitting device is a mechanical device that cuts a wide film into multiple narrow strips of material. It is mostly used for slitting various film materials.

[0004] In the prior art, the slitting device uses a disc-shaped upper blade and a lower blade that cooperate with each other to slit the film during the film transmission process, and the film will be torn and wrinkled, affecting the film slitting effect. Moreover, when the slitting width needs to be adjusted, the operation is very inconvenient.

[0005] It should be noted that the above introduction to the technical background is only for the convenience of providing a clear and complete description of the technical solutions of the utility model and for the convenience of understanding by those skilled in the art. It cannot be considered that the above technical solutions are well known to those skilled in the art simply because these solutions are described in the background technology section of the utility model. Summary of the invention

[0006] The technical problem to be solved by the utility model is to provide a film slitting device to effectively improve the film slitting quality.

[0007] In order to solve the above technical problems, the utility model provides a film slitting device, including multiple tensioning rollers and a guide rail, on which at least one slitting knife is installed, and the tip of each slitting knife is located between two adjacent tensioning rollers to slitting the film between the two adjacent tensioning rollers.

[0008] Preferably, the slitting knife comprises a knife holder body, a blade mounted on the distal end of the knife holder body, and a pressing block which presses the blade onto the knife holder body via a first locking member.

[0009] Preferably, a groove for accommodating the blade is provided on the tool holder body, and the clamping block has a protrusion that cooperates with the groove. The notch of the groove forms a first mounting surface on one side close to the clamping block, and second mounting surfaces are formed on both sides of the protrusion. The first locking piece passes through the first mounting surface and the second mounting surface in sequence to clamp and install the blade.

[0010] Preferably, the groove is arranged obliquely, and the width of the blade placed therein is smaller than the groove width of the groove.

[0011] Preferably, each of the tool holder bodies includes a first tool holder and a second tool holder which are separately arranged, and the first tool holder and the second tool holder are both provided with semicircular holes which adapt to each other, and the front and rear ends of the first tool holder and the second tool holder are respectively connected by a second locking piece to form an embracing structure for the guide rail.

[0012] Preferably, a first arcuate wall is provided on a side of the front end of the first tool holder close to the second tool holder, and a second arcuate wall is provided on the second tool holder that is compatible with the shape of the first arcuate wall. When the rear ends of the first tool holder and the second tool holder are locked by a second locking piece, a gap is formed between the arcuate wall and the second arcuate wall.

[0013] Preferably, it also includes a mounting frame, a unwinding roller for unwinding the film material, and a winding roller for winding the slit film material, and the tensioning roller and the guide rail are both installed on the mounting frame.

[0014] Preferably, the first locking member and the second locking member are both locking screws.

[0015] By means of the above technical solution, the beneficial effects of the utility model are as follows:

[0016] The utility model provides a guide rail for installing a slitting knife between two adjacent tensioning rollers, and the tip of the slitting knife is located between the two adjacent tensioning rollers to slit the film between the two tensioning rollers. The utility model is efficient and fast, and slitting can be achieved by scratching the blade of the blade during the film transmission process, which can effectively avoid the situation that scissors-like slitting causes tearing and wrinkling of the film, thereby improving the quality of film slitting. The slitting knife is provided with a split first knife holder and a split second knife holder, and adopts an embracing installation structure, so that its installation size has a wide adaptability range and is easy to install, and it is convenient to adjust and replace the width of the slitting film. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the utility model;

[0018] Figure 2 It is a schematic diagram of the slitting knife of the utility model;

[0019] Figure 3 It is a schematic diagram of the groove portion of the slitting knife of the utility model;

[0020] Figure 4 It is a schematic diagram of the compression block of the utility model.

[0021] in:

[0022] 1. Mounting frame; 2. Unwinding roller; 3. Rewinding roller; 4. Slitting knife; 401. First knife holder; 402. Second knife holder; 403. Blade; 404. First locking piece; 405. Second locking piece; 406. Groove; 407. Pressing block; 408. Protrusion; 409. Semicircular hole; 5. Tensioning roller; 6. Guide rail. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] It should be noted that in the description of the present invention, the terms "first", "second", etc. are only used for descriptive purposes and to distinguish similar objects. There is no order of precedence between the two, and they cannot be understood as indicating or implying relative importance. In addition, in the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0025] See attached Figure 1-4 The film slitting device described in a preferred embodiment of the present invention comprises a mounting frame 1, a unwinding roller 2, a winding roller 3 and a plurality of tensioning rollers 5 supported and / or mounted on the mounting frame 1. The mounting frame 1 has a feeding end and a discharging end. The unwinding roller 2 is arranged at the feeding end for unwinding the film material, and the winding roller 3 is arranged at the discharging end for winding up the slit film material. The film is transmitted from the unwinding roller 2 to the winding roller 3. A guide rail 6 is also arranged on the mounting frame 1, and at least one slitting knife 4 is installed on the guide rail 6. The tip of each slitting knife 4 is located between two adjacent tensioning rollers 5 to slit the film between the two adjacent tensioning rollers 5. The blade of the slitting knife 4 is arranged opposite to the film transmission direction. This method can effectively solve the problem of tearing and wrinkling on both sides of the film when slitting, so that the film is slit more smoothly.

[0026] The slitting knife 4 of the present application is configured to include a knife holder body, a blade 403 installed at the far end of the knife holder body, and a clamping block 407 installed on the knife holder body to press the blade 403 through a first locking member 404, thereby achieving timely replacement of the blade 403.

[0027] The inclination angle of the blade 403 is slightly adjusted according to actual needs when in use, so the blade holder body of the present application is provided with a groove 406 for accommodating the blade 403, the pressing block 407 has a protrusion 408 that cooperates with the groove 406, the notch of the groove 406 close to the pressing block 407 forms a first mounting surface, the two sides of the protrusion 408 form a second mounting surface, and the first locking member 404 passes through the first mounting surface and the second mounting surface in sequence to press and install the blade 403. The groove 406 is inclined, and the width of the blade 403 placed therein is smaller than the groove width of the groove 406.

[0028] Since there are various specifications for the width of film slitting during actual use, in order to facilitate the rapid adjustment of the installation position of the slitting knife 4, and to make it more firmly installed and adaptable to installation guide rails 6 of various sizes, it is preferred that each knife holder body of the present application includes a first knife holder 401 and a second knife holder 402 which are arranged in a split manner, and the first knife holder 401 and the second knife holder 402 are both provided with semicircular holes 409 which are adapted to each other, and the front and rear ends of the first knife holder 401 and the second knife holder 402 are respectively connected by a second locking member 405 to form an embracing structure for the guide rail 6. A first arc-shaped wall is provided on the side of the front end of the first knife holder 401 close to the second knife holder 402, and a second arc-shaped wall which is adapted to the shape of the first arc-shaped wall is provided on the second knife holder 402. When the rear ends of the first knife holder 401 and the second knife holder 402 are locked by the second locking member 405, there is a gap between the arc-shaped wall and the second arc-shaped wall.

[0029] Specifically, the first locking member 404 and the second locking member 405 of the present application are both locking nuts.

[0030] The above-described embodiments are only preferred embodiments for fully illustrating the present utility model, and the protection scope of the present utility model is not limited thereto. Equivalent substitutions or changes made by technicians in the technical field on the basis of the present utility model are all within the protection scope of the present utility model. The protection scope of the present utility model shall be subject to the claims.

Claims

1. A film slitting device, comprising a plurality of tension rollers, characterized in that: The invention also comprises a guide rail, on which at least one slitting knife is installed, and the tip of each slitting knife is located between two adjacent tensioning rollers so as to slit the film between the two adjacent tensioning rollers.

2. The film slitting device according to claim 1, characterized in that: The slitting knife comprises a knife holder body, a blade installed at the far end of the knife holder body, and a pressing block installed on the knife holder body by pressing the blade through a first locking member.

3. The film slitting device according to claim 2, characterized in that: The tool holder body is provided with a groove for accommodating the blade, the clamping block has a protrusion that cooperates with the groove, the notch of the groove is close to the side of the clamping block to form a first mounting surface, and the two sides of the protrusion form a second mounting surface, and the first locking piece passes through the first mounting surface and the second mounting surface in sequence to clamp and install the blade.

4. The film slitting device according to claim 3, characterized in that: The groove is arranged obliquely, and the width of the blade placed therein is smaller than the groove width of the groove.

5. The film slitting device according to claim 2, characterized in that: Each of the tool holder bodies includes a first tool holder and a second tool holder which are separately arranged. The first tool holder and the second tool holder are both provided with semicircular holes which adapt to each other. The front and rear ends of the first tool holder and the second tool holder are respectively connected by a second locking piece to form an embracing structure for the guide rail.

6. The film slitting device according to claim 5, characterized in that: A first arcuate wall is provided at the front end of the first tool holder on a side close to the second tool holder, and a second arcuate wall is provided at the second tool holder that is adapted to the shape of the first arcuate wall. When the rear ends of the first tool holder and the second tool holder are locked by a second locking piece, a gap is formed between the arcuate wall and the second arcuate wall.

7. The film slitting device according to claim 1, characterized in that: It also includes a mounting frame, a reel for reeling off the film material, and a reel for reeling in the slit film material. The tensioning roller and the guide rail are both mounted on the mounting frame.

8. The film slitting device according to claim 6, characterized in that: The first locking member and the second locking member are both locking screws.

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