Precise cutting device for film file protection sleeve

Abstract

The utility model discloses a precise cutting device for a film file protection sleeve. The precise cutting device comprises a rack, a film rolling cylinder, a guide carrier roller set, a film pressing mechanism and a cutting mechanism. The film rolling cylinder is used for rolling a film bag to be cut, the guide carrier roller set, the film pressing mechanism and the cutting mechanism are sequentially arranged on the machine frame in the conveying direction of the film bag, and the cutting mechanism is used for cutting the film bag. The cutting mechanism comprises a rotating driving assembly, a rotating shaft, a first eccentric wheel set, a second eccentric wheel set, an upper cutter and a lower cutter. The film pressing mechanism can apply proper pressure to the film bag, so that the film bag is prevented from sliding or shifting in the cutting process; the cutting mechanism drives the upper cutter and the lower cutter to synchronously reciprocate through the first eccentric wheel set and the second eccentric wheel set, so that balanced application of shearing force is achieved, the problem of thin film pulling caused by single-side stress during cutting is avoided, and the cutting efficiency of the equipment is effectively improved.

Description

Technical Field

[0001] This utility model relates to the field of cutting devices, and in particular to a precision cutting device for a thin film document protective sleeve. Background Technology

[0002] A film document sleeve is a type of document sleeve made of film material, used to store and protect important paper documents, tickets, certificates, and other documents. It is usually made of transparent or semi-transparent plastic film material.

[0003] In the existing technology, in order to meet the different users' needs for the size of the film document sleeve, the film sleeve needs to be cut. However, during the cutting process, because the film material is relatively soft, it is easy to stretch the film sleeve due to unilateral force, thus affecting the cutting effect of the film sleeve. In addition, because the surface of the film sleeve is relatively smooth and has a low coefficient of friction, it is easy to slip under force during the cutting process, resulting in positional displacement, thus affecting the cutting accuracy of the film document sleeve.

[0004] Therefore, existing technologies have shortcomings and need to be improved. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a precision cutting device for a thin film document protective sleeve with stable structure and high cutting accuracy.

[0006] To achieve this objective, the present invention adopts the following technical solution: a precision cutting device for a thin film document protective sleeve, comprising a frame, a film roll, a guide roller group, a film pressing mechanism, and a cutting mechanism;

[0007] The film roll is located at the end of the frame and is used to wind the film bag to be cut. The guide roller group, the film pressing mechanism and the cutting mechanism are arranged sequentially on the frame along the conveying direction of the film bag. The guide roller group is used to guide and convey the film bag.

[0008] The cutting mechanism is used to cut film bags. The cutting mechanism includes a rotary drive assembly, a rotating shaft, a first eccentric wheel group, a second eccentric wheel group, an upper cutter, and a lower cutter. The rotating shaft is rotatably connected to the frame. The rotary drive assembly is connected to the rotating shaft to drive the rotating shaft to rotate.

[0009] The upper cutter and the lower cutter are slidably mounted on the side wall of the frame. The cutting edges of the upper cutter and the lower cutter are arranged opposite to each other so that a cutting space for the film bag to pass through is formed between the upper cutter and the lower cutter.

[0010] The first eccentric wheel set and the second eccentric wheel set are respectively sleeved on the rotating shaft, and the first eccentric wheel set is connected to the lower cutter, and the second eccentric wheel set is connected to the upper cutter. The first eccentric wheel set and the second eccentric wheel set are used to move up and down reciprocally as the rotating shaft rotates.

[0011] Using the above technical solutions, in the precision cutting device for the thin film document protective sleeve, the first eccentric wheel group includes an eccentric wheel block and a lifting swing arm;

[0012] The eccentric wheel block is eccentrically connected to the rotating shaft, the bottom of the lifting arm is movably connected to the eccentric wheel block, and the top of the lifting arm is connected to the lower cutter. The lifting arm is used to push the lower cutter to move up and down reciprocally as the eccentric wheel block rotates.

[0013] Using the above technical solutions, in the precision cutting device for the thin film document protective sleeve, the side wall of the frame is provided with a first slide groove and a second slide groove, the lower cutter is located in the first slide groove and can slide along the extension direction of the first slide groove, and the upper cutter is located in the second slide groove and can slide along the extension direction of the second slide groove.

[0014] Using the above technical solutions, in the precision cutting device for the thin film document protective sleeve, the film pressing mechanism includes a lifting cylinder, an elastic pressure plate, and a film support plate;

[0015] The film support plate is located at the side end of the cutting mechanism. The film support plate is used to support the film bag to be cut. The lifting cylinder is located on the frame above the film support plate, with its movable end facing downward and connected to the elastic pressure plate. The lifting cylinder is used to press the elastic pressure plate onto the film support plate when the cutting mechanism is in operation.

[0016] Using the above technical solutions, in the precision cutting device for the thin film document protective sleeve, the rotary drive assembly includes a drive motor, a drive pulley, a driven pulley, and a transmission belt;

[0017] The output end of the drive motor is connected to the drive pulley, and the drive motor is used to drive the drive pulley to rotate. The driven pulley is located on the rotating shaft, and the drive pulley and the driven pulley are connected by the transmission belt.

[0018] The precision cutting device for the film document protective sleeve, which adopts the above technical solutions, also includes a tension adjustment mechanism. The tension adjustment mechanism is located between the guide roller group and the film roll, and is used to adjust the conveying tension of the film sleeve.

[0019] Using the above-mentioned technical solutions, in the precision cutting device for the thin film document protective sleeve, the tension adjustment mechanism includes a telescopic cylinder, a swing arm, and a pressure roller;

[0020] One end of the swing arm is rotatably connected to the side wall of the frame, and the other end of the swing arm is connected to the pressure roller. The pressure roller is used to abut against the upper surface of the film bag. The telescopic cylinder is provided on the frame, and the movable end of the telescopic cylinder is connected to the swing arm. The telescopic cylinder is used to drive the swing arm to swing, so as to adjust the pressure of the pressure roller on the film bag.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] In this invention, the guide roller assembly, the film pressing mechanism, and the cutting mechanism are arranged sequentially along the conveying direction of the film bag. The film pressing mechanism can apply appropriate pressure to the film bag to prevent it from sliding or shifting during the cutting process, thereby improving the cutting accuracy. The cutting mechanism drives the rotating shaft to rotate through the rotary drive assembly, and drives the upper and lower cutters to reciprocate synchronously through the first and second eccentric wheel sets. In this way, the shearing force can be applied evenly, thereby completing the precise cutting of the film bag and avoiding the film pulling problem caused by unilateral force. This makes the cutting action smoother and effectively improves the cutting efficiency of the equipment. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] The structures, proportions, sizes, etc., shown in the accompanying drawings of this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and purposes that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0025] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0026] Figure 2 This is a schematic diagram of the overall structure of this utility model from another perspective;

[0027] Figure 3This is a schematic diagram of the installation structure of the cutting mechanism of this utility model;

[0028] Figure 4 This is a schematic diagram of the pressing mechanism of this utility model. Detailed Implementation

[0029] To make the utility model's objectives, features, and advantages more apparent and understandable, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described below 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 scope of protection of the present utility model.

[0030] In the description of this utility model, it should be understood that the terms "upper," "lower," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. It should be noted that when a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be a component centrally located at the same time.

[0031] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0032] like Figures 1 to 4 As shown, this utility model embodiment provides a precision cutting device for thin film document sleeves, including a frame 1, a film roll 2, a guide roller group 3, a film pressing mechanism 4, and a cutting mechanism 5. The film roll 2 is located at the end of the frame 1 and is used to wind the thin film sleeve to be cut. The guide roller group 3, the film pressing mechanism 4, and the cutting mechanism 5 are sequentially arranged on the frame 1 along the conveying direction of the thin film sleeve. The guide roller group 3 is used to guide and convey the thin film sleeve. The film roll 2 is located on the frame. The end of 1 facilitates the storage of the film bag in roll form and allows it to be gradually unfolded when needed. After being drawn out from the film roll 2, the film bag first passes through the guide roller group 3, which guides and flattens the film bag to ensure that it remains flat during transport. Then, the film pressing mechanism 4 applies appropriate pressure to the film bag to prevent it from slipping during the cutting process and affecting the cutting accuracy. Finally, the film bag enters the cutting mechanism 5, thereby achieving precise cutting of the film bag.

[0033] like Figure 1 and Figure 3 As shown, the cutting mechanism 5 is used to cut film bags. The cutting mechanism 5 includes a rotary drive assembly 51, a rotating shaft 52, a first eccentric wheel set 53, a second eccentric wheel set 54, an upper cutter 55, and a lower cutter 56. The rotating shaft 52 is rotatably connected to the frame 1. The rotary drive assembly 51 is connected to the rotating shaft 52 to drive the rotating shaft 52 to rotate. The upper cutter 55 and the lower cutter 56 are slidably disposed on the side wall of the frame 1. The cutting edges of the upper cutter 55 and the lower cutter 56 are arranged opposite to each other so that a cutting space for the film bag to pass through is formed between the upper cutter 55 and the lower cutter 56. The first eccentric wheel set 53 and the second eccentric wheel set 54 are respectively sleeved on the rotating shaft 52. The first eccentric wheel set 53 is connected to the lower cutter 56, and the second eccentric wheel set 54 is connected to the upper cutter 55. The first eccentric wheel set 53 and the second eccentric wheel set 54 are used to move up and down reciprocally as the rotating shaft 52 rotates. In this way, the upper cutter 55 and the lower cutter 56 can move synchronously in opposite directions, so as to achieve balanced application of shearing force, thereby completing the precise cutting of the film bag and reducing the film stretching problem caused by unilateral force. At the same time, the setting of the first eccentric wheel set 53 and the second eccentric wheel set 54 makes the upper cutter 55 and the lower cutter 56 maintain precise synchronous reciprocating motion, which not only improves the cutting accuracy, but also makes the cutting action smoother, reduces vibration and noise, and effectively improves the cutting efficiency of the equipment.

[0034] like Figure 3 As shown, the first eccentric wheel assembly 53 further includes an eccentric wheel block 531 and a lifting arm 532. The eccentric wheel block 531 is eccentrically connected to the rotating shaft 52. The bottom of the lifting arm 532 is movably connected to the eccentric wheel block 531, and the top of the lifting arm 532 is connected to the lower cutter 56. The lifting arm 532 is used to push the lower cutter 56 to move up and down reciprocally as the eccentric wheel block 531 rotates. The eccentric wheel block 531 is eccentrically connected to the rotating shaft 52. As the rotating shaft 52 rotates, the eccentric wheel block 531 generates circular motion, and the lifting arm 532, which is movably connected to it, converts this circular motion into linear motion, thereby realizing the up and down reciprocating motion of the lower cutter 56.

[0035] like Figure 3As shown, furthermore, the side wall of the frame 1 is provided with a first sliding groove 11 and a second sliding groove 12. The lower cutter 56 is located in the first sliding groove 11 and can slide along the extending direction of the first sliding groove 11. The upper cutter 55 is located in the second sliding groove 12 and can slide along the extending direction of the second sliding groove 12. The arrangement of the first sliding groove 11 and the second sliding groove 12 can prevent the upper cutter 55 and the lower cutter 56 from shifting or shaking during the cutting process, thereby improving the cutting accuracy of the film bag.

[0036] like Figure 2 and Figure 4 As shown, the film pressing mechanism 4 further includes a lifting cylinder 41, an elastic pressure plate 42, and a film support plate 43. The film support plate 43 is located at the side end of the cutting mechanism 5 and is used to support the film bag to be cut. The lifting cylinder 41 is mounted on the frame 1 above the film support plate 43, with its movable end facing downwards and connected to the elastic pressure plate 42. The lifting cylinder 41 is used to press the elastic pressure plate 42 onto the film support plate 43 when the cutting mechanism 5 is in operation. The film support plate 43 provides a flat support surface, ensuring that the film bag remains flat when it is transported to the cutting position. When the cutting mechanism 5 is working, the lifting cylinder 41 is activated, pressing the elastic pressure plate 42 against the film support plate 43, thereby clamping and fixing the film bag. This not only prevents the film bag from sliding during cutting but also effectively avoids excessive pressure that could cause damage to the film bag.

[0037] like Figure 1 As shown, the rotary drive assembly 51 further includes a drive motor 511, a drive pulley 512, a driven pulley 513, and a transmission belt 514. The output end of the drive motor 511 is connected to the drive pulley 512, and the drive motor 511 is used to drive the drive pulley 512 to rotate. The driven pulley 513 is disposed on the rotating shaft 52. The drive pulley 512 and the driven pulley 513 are connected by the transmission belt 514. When the drive pulley 512 rotates, the rotating shaft 52 connected to the driven pulley 513 can be driven to rotate through the transmission belt 514.

[0038] like Figure 2As shown, further, a tension adjustment mechanism 6 is also included. The tension adjustment mechanism 6 is located between the guide roller group 3 and the film roll 2. The tension adjustment mechanism 6 is used to adjust the conveying tension of the film bag. The tension adjustment mechanism 6 includes a telescopic cylinder 61, a swing arm 62, and a pressure roller 63. One end of the swing arm 62 is rotatably connected to the side wall of the frame 1, and the other end of the swing arm 62 is connected to the pressure roller 63. The pressure roller 63 is used to abut against the upper surface of the film bag. The telescopic cylinder 61 is located on the frame 1, and the movable end of the telescopic cylinder 61 is connected to the swing arm 62. The telescopic cylinder 61 is used to drive the swing arm 62 to swing, so as to adjust the pressure of the pressure roller 63 on the film bag. When the film bag is drawn out from the film roll 2 and enters the guide roller group 3, the pressure roller 63 abuts against the upper surface of the film bag. By applying appropriate pressure, the film bag is flattened and tensioned, so that it remains stable during the conveying process and avoids slippage or stretching deformation due to slack or excessive tightness. The telescopic cylinder 61 allows the tension adjustment mechanism 6 to be flexibly adjusted according to the thickness and tension requirements of the film bag to adapt to the conveying needs of different types of film bags.

[0039] The above-described embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A precision cutting device for thin-film document sleeves, characterized in that, It includes a frame, film roll, guide roller assembly, film pressing mechanism, and cutting mechanism; The film roll is located at the end of the frame and is used to wind the film bag to be cut. The guide roller group, the film pressing mechanism and the cutting mechanism are arranged sequentially on the frame along the conveying direction of the film bag. The guide roller group is used to guide and convey the film bag. The cutting mechanism is used to cut film bags. The cutting mechanism includes a rotary drive assembly, a rotating shaft, a first eccentric wheel group, a second eccentric wheel group, an upper cutter, and a lower cutter. The rotating shaft is rotatably connected to the frame. The rotary drive assembly is connected to the rotating shaft to drive the rotating shaft to rotate. The upper cutter and the lower cutter are slidably mounted on the side wall of the frame. The cutting edges of the upper cutter and the lower cutter are arranged opposite to each other so that a cutting space for the film bag to pass through is formed between the upper cutter and the lower cutter. The first eccentric wheel set and the second eccentric wheel set are respectively sleeved on the rotating shaft, and the first eccentric wheel set is connected to the lower cutter, and the second eccentric wheel set is connected to the upper cutter. The first eccentric wheel set and the second eccentric wheel set are used to move up and down reciprocally as the rotating shaft rotates.

2. The precision cutting device for the thin-film document protective sleeve according to claim 1, characterized in that, The first eccentric wheel assembly includes an eccentric wheel block and a lifting swing arm; The eccentric wheel block is eccentrically connected to the rotating shaft, the bottom of the lifting arm is movably connected to the eccentric wheel block, and the top of the lifting arm is connected to the lower cutter. The lifting arm is used to push the lower cutter to move up and down reciprocally as the eccentric wheel block rotates.

3. The precision cutting device for the thin-film document protective sleeve according to claim 2, characterized in that, The side wall of the frame is provided with a first slide groove and a second slide groove. The lower cutter is located in the first slide groove and can slide along the extension direction of the first slide groove. The upper cutter is located in the second slide groove and can slide along the extension direction of the second slide groove.

4. The precision cutting device for the thin-film document protective sleeve according to claim 1, characterized in that, The film pressing mechanism includes a lifting cylinder, an elastic pressure plate, and a film support plate; The film support plate is located at the side end of the cutting mechanism. The film support plate is used to support the film bag to be cut. The lifting cylinder is located on the frame above the film support plate, with its movable end facing downward and connected to the elastic pressure plate. The lifting cylinder is used to press the elastic pressure plate onto the film support plate when the cutting mechanism is in operation.

5. The precision cutting device for the thin-film document protective sleeve according to claim 1, characterized in that, The rotary drive assembly includes a drive motor, a driving pulley, a driven pulley, and a transmission belt; The output end of the drive motor is connected to the drive pulley, and the drive motor is used to drive the drive pulley to rotate. The driven pulley is located on the rotating shaft, and the drive pulley and the driven pulley are connected by the transmission belt.

6. The precision cutting device for the thin-film document protective sleeve according to claim 1, characterized in that, It also includes a tension adjustment mechanism, which is located between the guide roller group and the film roll, and is used to adjust the conveying tension of the film bag.

7. The precision cutting device for the thin-film document protective sleeve according to claim 6, characterized in that, The tension adjustment mechanism includes a telescopic cylinder, a swing arm, and a pressure roller; One end of the swing arm is rotatably connected to the side wall of the frame, and the other end of the swing arm is connected to the pressure roller. The pressure roller is used to abut against the upper surface of the film bag. The telescopic cylinder is provided on the frame, and the movable end of the telescopic cylinder is connected to the swing arm. The telescopic cylinder is used to drive the swing arm to swing, so as to adjust the pressure of the pressure roller on the film bag.

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