Film cutter and film cutting apparatus

Abstract

The present disclosure provides a film cutter and a film cutting device, the film cutter comprising a base, a mounting seat, a feed mechanism, a micro-motion mechanism, a cutter and a controller, the controller being configured to control the cutter to feed to a cutting position before cutting the film and control the micro-motion mechanism to repeatedly micro-move at the cutting position during the cutting of the film. According to the present disclosure, the position of the cutting edge that cuts the film can be changed, thereby avoiding long-term cutting of the film at the same position, preventing the cutting edge from breaking and wearing, reducing the frequency of replacing the cutter, avoiding downtime and production stoppage due to replacement of the cutter, and saving time and cost required for replacing the cutter.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of film processing, in particular to a film cutter and a film cutting device. BACKGROUND

[0002] In the film transverse stretching process, it is necessary to cut the edge area of the stretched film along the film conveying direction. The prior art uses a disc cutter to achieve film cutting, but the rotary driving mechanism of the disc cutter has a complex structure and occupies a large space, which is easy to cause scratches on the film. In this regard, the skilled person uses a sheet cutter, which is kept stationary, and the cutting edge of the cutter is arranged facing the film conveying direction to achieve cutting by the film impacting the cutting edge. However, this method causes defects such as chipping and wear of the cutting edge after a period of cutting work, which leads to smooth cutting of the film, and even causes the film to curl. The skilled person needs to frequently stop and replace the cutter, which reduces the film cutting work efficiency and increases the cutter replacement cost. SUMMARY

[0003] The present application provides a film cutter and a film cutting device.

[0004] Specifically, the present application is implemented by the following technical solutions:

[0005] In a first aspect, the present application provides a film cutter for connecting with a film cutting device to cut a film along the film moving direction, comprising:

[0006] a base;

[0007] a mounting seat arranged on one side of the base for connecting with the film cutting device;

[0008] an infeed mechanism arranged on the other side of the base;

[0009] a micro-motion mechanism connected with the infeed mechanism and driven by the infeed mechanism to perform infeed motion in the direction of approaching and moving away from the film surface;

[0010] a cutter connected with the micro-motion mechanism and driven by the micro-motion mechanism to perform micro-motion in the direction of approaching and moving away from the film surface;

[0011] a controller for controlling the cutter to infeed to a cutting position before cutting the film, and controlling the micro-motion mechanism to repeatedly micro-move at the cutting position during the cutting of the film.

[0012] In some embodiments, the infeed mechanism includes a telescopic cylinder and a telescopic rod, the telescopic cylinder is arranged on the other side of the base, and the distal end of the telescopic rod is connected with the micro-motion mechanism.

[0013] In some embodiments, the micro-motion mechanism comprises a micro-motion shell, an electric cylinder and a micro-motion rod, the micro-motion shell is connected with the feeding mechanism, the electric cylinder is arranged in the micro-motion shell, and the distal end of the micro-motion rod is provided with the cutter.

[0014] In some embodiments, the base comprises a horizontally extending top seat and a vertically extending side seat, the mounting seat is arranged on the top seat and can move in the direction close to and away from the micro-motion mechanism.

[0015] In some embodiments, the mounting seat comprises a seat body, a guide pair, a moving table and a gas cylinder, one end of the gas cylinder rod is connected with the seat body, and the gas cylinder sleeve is connected with the moving table, so that the moving table moves relative to the seat body through the guide pair.

[0016] In some embodiments, the top of the electric cylinder is provided with a connecting plate, the distal end of the telescopic rod is provided with a telescopic frame, and the connecting plate is connected with the telescopic frame.

[0017] In some embodiments, the micro-motion mechanism further comprises a cutter seat, a guide sleeve and a guide rod, the cutter seat is provided with a cutter at the top and is connected with the micro-motion rod and the guide rod at the bottom, the guide sleeve is arranged on the connecting plate, and the guide rod moves in the guide sleeve.

[0018] In some embodiments, the micro-motion shell is connected with the telescopic rod, an opening is formed at the top of the micro-motion shell, and the cutter extends out of the micro-motion shell through the opening.

[0019] In some embodiments, the micro-motion shell is further connected with a negative pressure pipe, and the negative pressure pipe is used for sucking film debris.

[0020] In a second aspect, the embodiments of the present application provide a film cutting device, comprising:

[0021] a film conveying mechanism;

[0022] the film cutter of the first aspect is arranged on the side of the film conveying mechanism.

[0023] According to various embodiments of the present disclosure, by arranging the cutter feeding mechanism, the cutter is moved from the hidden station to the cutting station when the film needs to be cut, so as to realize convenient and fast cutter feeding action; by arranging the micro-motion mechanism, the cutter can be controlled to move in the direction close to and away from the surface of the film in a small amplitude during the film cutting process, so that the position of the cutting edge acting on the film can be changed, that is, the same cutting edge position is avoided for long-term film cutting operation, the cutting edge of the cutter is prevented from breaking and wearing, so as to reduce the replacement frequency of the cutter and avoid the situation of stopping production due to replacement of the cutter.

[0024] It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application, as claimed. BRIEF DESCRIPTION OF DRAWINGS

[0025] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the application and serve to explain the principles of the application, in which, like reference numerals designate corresponding parts throughout the several views.

[0026] Figure 1 is a schematic diagram of a non-working state of a film cutter in an embodiment of the present disclosure;

[0027] Figure 2 is a schematic diagram of a first perspective of a working state of a film cutter in an embodiment of the present disclosure;

[0028] Figure 3 is a schematic diagram of a second perspective of a working state of a film cutter in an embodiment of the present disclosure;

[0029] Figure 4 is a schematic diagram of an open micro-motion mechanism of a film cutter in an embodiment of the present disclosure;

[0030] Figure 5 is a schematic diagram of a micro-motion mechanism of a film cutter in an embodiment of the present disclosure; Figure 4 is a partial enlarged view of A in FIG. 6.

[0031] REFERENCE NUMERALS:

[0032] 10: base; 11: top seat; 12: side seat;

[0033] 20: mounting seat; 21: seat body; 22: moving table; 231: cylinder sleeve; 232: cylinder rod

[0034] 30: feed mechanism; 31: telescopic cylinder; 32: telescopic rod; 33: telescopic frame;

[0035] 40: micro-motion mechanism; 41: micro-motion shell; 411: negative pressure pipe; 42: electric cylinder; 43: micro-motion rod; 44: connecting plate; 45: cutter seat; 461: guide sleeve; 462: guide rod

[0036] 50: cutter. DETAILED DESCRIPTION

[0037] The present disclosure will now be discussed with reference to several embodiments. It should be appreciated that these embodiments are discussed only to better illustrate the present disclosure and thus enable its best utilization, and are not intended to limit the scope of the present disclosure.

[0038] As used herein, the term "including" and its variations are to be interpreted as open-ended terms meaning "including but not limited to." The term "based on" is to be interpreted as "based, at least in part, on." The terms "embodiment" and "one embodiment" are to be interpreted as "at least one embodiment." The term "another embodiment" is to be interpreted as "at least one other embodiment." The terms "first," "second," etc. may refer to different or the same objects. Other explicit and implicit definitions may also be included below.

[0039] In the following description, some specific numerical values ​​or numerical ranges may be involved. It should be understood that these numerical values ​​and numerical ranges are merely exemplary, which may be helpful in putting the ideas of the present disclosure into practice. However, the description of these examples is not intended to limit the scope of the present disclosure in any way. Depending on specific application scenarios and needs, these numerical values ​​or numerical ranges can be set separately.

[0040] As mentioned above, in the prior art, when cutting a film, the cutter 50 remains stationary, resulting in the position of the cutting edge that cuts the film remaining unchanged, which can easily cause the cutting edge to frequently break and wear. The film cutter and film cutting device proposed in the embodiments of the present disclosure at least partially solve the above problems. Figures 1 to 5 The structure and working principle of the film cutter according to the exemplary embodiment of the present disclosure are described below. Figures 1-5 As shown, in general, the film cutter described herein includes a base 10, a mounting base 20, a feed mechanism 30, a micro-motion mechanism 40, a cutter 50 and a controller, wherein the base 10 is the overall frame of the film cutter, used to carry other components; the mounting base 20 is used to connect and install the entire film cutter to the film cutting equipment; the feed mechanism 30 is used to drive the micro-motion mechanism 40 and the cutter 50 to move between the cutting station and the hidden station; the micro-motion mechanism 40 is used to drive the cutter 50 to move slightly in a direction perpendicular to the surface of the film during the film cutting process, thereby changing the position of the cutting edge; the cutter 50 is used to cut the film, and the controller is used to control the action of the feed mechanism 30 and the micro-motion mechanism 40.

[0041] Overall, the base 10 primarily serves as a load-bearing structure, and therefore requires sufficient stability to prevent vibration during the movement and cutting of the cutter 50. In one embodiment, the base 10 is L-shaped, with a horizontally extending top seat 11 at the top of the L-shaped structure and a vertically extending side seat 12 on one side of the top seat 11. By providing an L-shaped structure, the top seat 11 can increase the connection area with the film cutting equipment, thereby improving the installation strength. The top seat 11 can also increase the range of movement of the cutter 50 relative to the film, thereby being suitable for a wider range of film sizes.

[0042] The feeding mechanism 30 is arranged on the side base 12 of the L-shaped base 10. In an embodiment, the feeding mechanism 30 comprises a telescopic cylinder 31 and a telescopic rod 32. The telescopic cylinder 31 can be a pneumatic cylinder or a hydraulic cylinder, or a linear motor, as long as it can drive the telescopic rod 32 to extend and retract. The telescopic cylinder 31 is installed on the side base 12. In an example, the telescopic cylinder 31 is installed vertically to the surface of the film, so that the telescopic rod 32 drives the micro-motion mechanism 40 and the cutter 50 to move between the hidden position and the cutting position in the shortest distance, and the moving efficiency is high. In other embodiments, the telescopic cylinder 31 can be installed at an angle to the surface of the film, as long as it can drive the cutter 50 to approach and move away from the film, so as to realize the cutting of the film.

[0043] The micro-motion mechanism 40 is arranged on the feeding mechanism 30. In an embodiment, the micro-motion mechanism 40 comprises an electric cylinder 42 and a micro-motion rod 43. The electric cylinder 42 converts rotation into linear movement of the micro-motion rod 43, so as to ensure that the movement of the micro-motion rod 43 is slow and stable, and avoid that the film in the moving process is driven to move by the cutter 50. The electric cylinder 42 is connected with the telescopic rod 32. In an example, the telescopic rod 32 is connected with a telescopic frame 33 at the top, and the electric cylinder 42 is connected with a connecting plate 44 at the top. The connecting plate 44 is connected with the telescopic frame 33, so as to install the electric cylinder 42 on the telescopic frame 33, and ensure that the electric cylinder 42 moves with the telescopic rod 32.

[0044] In an embodiment, the cutter 50 is connected with the micro-motion mechanism 40 through a cutter seat 45. In an example, the cutter seat 45 is connected with the micro-motion rod 43 at the middle position of the bottom, and a pair of guide rods 462 are connected with the cutter seat 45 at both sides of the bottom. A pair of guide sleeves 461 are also connected with the telescopic frame 33. The micro-motion rod 43 drives the cutter seat 45 to move, and the guide rods 462 and the guide sleeves 461 cooperate to realize the guiding effect. In an embodiment, the electric cylinder 42 can be installed vertically to the surface of the film, so that the stroke of the cutter 50 in the micro-motion direction is minimum. The electric cylinder 42 can also be installed at an angle to the surface of the film, as long as it can drive the cutting edge of the cutter 50 to change position relative to the film.

[0045] In an embodiment, the micro-motion mechanism 40 is further provided with a micro-motion shell 41. The micro-motion shell 41 can be connected with the telescopic frame 33 through bolts, so that the micro-motion shell 41 is static relative to the telescopic rod 32 of the feeding mechanism 30, and moves relative to the micro-motion rod 43 of the micro-motion mechanism 40. An opening is arranged at the top of the micro-motion shell 41, so as to ensure that the cutter 50 extends and retracts through the opening. In this embodiment, the micro-motion shell 41 protects the cutter 50 in the non-working state, avoids the cutter 50 from being contaminated, and improves the service life of the cutter 50.

[0046] In one embodiment, the side wall of the micro-motion shell 41 is connected with a negative pressure pipe 411, the negative pressure pipe 411 is connected with a pump, the negative pressure pipe 411 moves with the micro-motion shell 41, and the debris generated by the cutting knife 50 cutting the film is discharged from the working area through the negative pressure pipe 411, so as to avoid the interference of the debris with the film cutting.

[0047] In one embodiment, the top base 11 of the "L" type base 10 is provided with a mounting seat 20 which is movably arranged on the top base 11, the mounting seat 20 comprises a seat body 21, a guide pair, a moving table 22 and a pneumatic cylinder, the guide pair is composed of a guide rail and a sliding block, the moving table 22 is fixedly connected with the top base 11, the guide rail and the sliding block are respectively arranged on the moving table 22 and the seat body 21, the cylinder sleeve 231 of the pneumatic cylinder is fixed with the seat body 21, and the cylinder rod 232 of the pneumatic cylinder is fixed with the moving table 22, and the seat body 21 is driven to move in the direction close to and away from the cutting knife 50 through the extension and contraction movement of the pneumatic cylinder.

[0048] In the embodiment of the present disclosure, the cutting knife 50 is installed on the knife seat 45, and the seat body 21 is installed on the film cutting device, and the installation position and direction are guaranteed to ensure that the cutting knife 50 can reach the film in the cutting state and can be away from the film in the non-cutting state.

[0049] The embodiment of the present disclosure relates to a film cutting device provided with a film cutter, and in the specific working process, the film material conveying mechanism moves the stretched film along the first direction, in the initial state, as shown in the figure, the micro-motion mechanism 40 retracts the cutting knife 50 into the micro-motion shell 41, and the feeding mechanism 30 retreats the micro-motion mechanism 40 and the cutting knife 50 as a whole to ensure that the micro-motion mechanism 40 and the cutting knife 50 are hidden in the bottom of the seat body 21. Figure 1 In the film cutting state, as shown in the figure, the base 10, the feeding mechanism 30, the micro-motion mechanism 40 and the cutting knife 50 are pushed to a position away from the seat body 21 by the pneumatic cylinder, the micro-motion mechanism 40 and the cutting knife 50 are pushed to the position below the film by the feeding mechanism 30, the cutting knife 50 is extended to the position of the film by the micro-motion mechanism 40, the cutting is realized by the film in the process colliding with the cutting edge of the cutting knife 50, and the controller controls the micro-motion push rod to drive the cutting knife 50 to move slowly at a small amplitude, so as to ensure that the cutting effect edge can change in the cutting process, and the edge collapse and wear are avoided. Figure 2 In one embodiment, the micro-motion process of the cutting knife 50 can be moving a distance S every interval T, and the time T can be 30s and the distance S can be 5mm.

[0050]

[0051] ​According to the embodiment of the present disclosure, the position of the blade for cutting the film can be changed, that is, the same position of the blade is avoided to cut the film for a long time, the blade is prevented from breaking and wearing, and the time and cost required for replacing the blade are saved.

[0052] Any reference to direction or orientation in the description of the embodiments is only to facilitate description and cannot be understood as any limitation on the protection scope of the present application. The following description of the preferred embodiments will involve combinations of features, which can exist independently or in combination, and the present application is not particularly limited to the preferred embodiments. The scope of the present application is defined by the claims.

[0053] The above is only a preferred embodiment of the present application, and is not used to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A film cutter for connection with a film cutting apparatus to cut a film in a direction of movement of the film, characterized by, The application relates to a film cutting device. The base (10) comprises a top base (11) extending horizontally and a side base (12) extending vertically, the mounting seat (20) is arranged on the top base (11) and can move in the direction close to and away from the micro-motion mechanism (40). The micro-motion mechanism (40) comprises a micro-motion shell (41), an electric cylinder (42) and a micro-motion rod (43), the micro-motion shell (41) is connected with the feed mechanism (30), the electric cylinder (42) is arranged in the micro-motion shell (41), and the distal end of the micro-motion rod (43) is provided with the cutter (50). The mounting seat (20) comprises a seat body (21), a guide pair, a moving table (22) and a cylinder, one end of a cylinder rod (232) is connected with the seat body (21), a cylinder sleeve (231) is connected with the moving table (22), so that the moving table (22) moves relative to the seat body (21) through the guide pair. The feed mechanism (30) comprises a telescopic cylinder (31) and a telescopic rod (32), the telescopic cylinder (31) is arranged on the other side of the base (10), and the distal end of the telescopic rod (32) is connected with the micro-motion mechanism (40). The base (10) comprises a top base (11) extending horizontally and a side base (12) extending vertically, the mounting seat (20) is arranged on the top base (11) and can move in the direction close to and away from the micro-motion mechanism (40). The electric cylinder (42) is provided with a connecting plate (44) at the top, the telescopic rod (32) is provided with a telescopic frame (33) at the distal end, and the connecting plate (44) is connected with the telescopic frame (33). The micro-motion mechanism (40) further comprises a cutter seat (45), a guide sleeve (461) and a guide rod (462), the cutter seat (45) is provided with the cutter (50) at the top and is connected with the micro-motion rod (43) and the guide rod (462) at the bottom, the guide sleeve (461) is arranged on the connecting plate (44), and the guide rod (462) moves in the guide sleeve (461). The micro-motion shell (41) is connected with the telescopic rod (32), the top of the micro-motion shell (41) is formed with an opening, and the cutter (50) extends out of the micro-motion shell (41) through the opening.

2. The film cutter of claim 1, wherein The micro-motion shell (41) is further connected with a negative pressure pipe (411), and the negative pressure pipe (411) is used for sucking film debris.

3. The film cutter of claim 1, wherein The application relates to a film cutting device.

4. The film cutter of claim 2, wherein The film cutting device is arranged on the side of the film material conveying mechanism.

5. The film cutter of claim 1, wherein, ​ 6. The film cutter of claim 1, wherein ​ 7. The film cutter of claim 6, wherein, ​ 8. A film cutting apparatus characterized by comprising: ​ ​ ​

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