Gantry type slitting device for plastic film

Abstract

The utility model provides a gantry type slitting device for a plastic film. The gantry type slitting device comprises a workbench, a mounting frame, a lifting seat and a blade. The mounting frame is fixed to the workbench. The lifting base is slidably arranged on the inner side of the mounting frame and is in transmission connection with a first linear driving component. An elastic cushion is fixedly arranged on the lower side surface of the lifting seat, and a strip-shaped hole is formed in the elastic cushion; the blade is arranged on the lifting base in a sliding mode and is in transmission connection with a second linear driving component. When the plastic film needs to be slit, the first linear driving component drives the lifting seat to move downwards, so that the elastic cushion abuts against the plastic film to the upper side face of the workbench and elastically deforms; on the basis, the second linear driving component drives the blade to move downwards to the use state, and then the plastic film can be slit. According to the gantry type slitting device for the plastic film, an original scraper sliding mode can be replaced with a single-time cutter falling mode, so that wrinkles are avoided, and it is ensured that linear shear marks are generated.

Description

Technical Field

[0001] This application belongs to the field of plastic film production technology, specifically relating to a gantry-type slitting device for plastic film. Background Technology

[0002] Plastic film needs to be cut during the production process to ensure that the amount of film wound up in each segment is a fixed value.

[0003] In the prior art, the equipment used to cut plastic film is usually a pressure plate, and a slidable scraper is provided on this pressure plate; specifically, when the pressure plate presses down on the film, the scraper moves in a horizontal direction to separate the film.

[0004] The inventors discovered that the movement of the squeegee causes wrinkles in the film, which are particularly noticeable when there are air bubbles between the pressure plate and the film, or between the film and the lower panel. Furthermore, the cuts formed by the movement of the squeegee are difficult to keep straight, which not only affects the connection between the slit film and the winding equipment, but also makes the ends of the wound film unsightly and unable to meet the quality inspection standards for film products. Utility Model Content

[0005] This application provides a gantry-type slitting device for plastic film, which aims to replace the original sliding scraper method with a single-drop method to avoid wrinkles and generate straight cuts.

[0006] To achieve the above objectives, the technical solution adopted in this application is as follows:

[0007] A gantry-type slitting device for plastic film is provided, including a worktable for fixing to the lower side of the plastic film; the gantry-type slitting device further includes:

[0008] The mounting bracket adopts a U-shaped structure and is fixedly installed on the upper side of the workbench so that the plastic film in the translational state is located inside the mounting bracket;

[0009] The lifting seat is slidably disposed on the inner side of the mounting frame in the vertical direction and is connected to a first linear drive component for driving its movement; an elastic pad is fixedly disposed on the lower side of the lifting seat, and a strip-shaped hole is opened on the elastic pad that runs through in the vertical direction and extends in the horizontal direction; when the elastic pad presses the plastic film to the upper side of the worktable, both ends of the strip-shaped hole are on the outer side of the plastic film.

[0010] The blade is slidably mounted on the lifting seat in the vertical direction and is connected to a second linear drive member for moving it. When the second linear drive member moves the blade, the blade has an idle state where it is stored above the elastic pad and a working state where it extends below the elastic pad.

[0011] In one possible implementation, the lower side of the lifting seat is provided with a storage groove that communicates with the strip hole;

[0012] When the blade is in the idle state, the blade is located in the storage slot.

[0013] In one possible implementation, the upper side of the lifting seat is provided with a reserved hole communicating with the storage slot, and the blade has a drive handle that extends through the reserved hole to the upper side of the lifting seat.

[0014] The second linear drive component is a linear cylinder that is fixedly mounted on the upper side of the lifting seat and is connected to the drive handle for transmission.

[0015] In one possible implementation, the elastic pad has vents communicating with the strip hole on both sides of the strip hole extending in the direction of extension, and each vent hole is disposed through the lower side of the elastic pad.

[0016] In one possible implementation, the upper side of the workbench is provided with a recessed groove suitable for communicating with the strip hole;

[0017] When the blade is in the use state, the blade extends into the sinkhole.

[0018] In one possible implementation, the first linear drive component includes:

[0019] Two swing arms are arranged side-by-side horizontally on the upper side of the lifting base, and both are hinged to the lifting base; each swing arm has a slider hinged to its swing end, and the slider is slidably connected to the mounting frame; and

[0020] A double-ended screw is rotatably mounted on the mounting bracket, with its axis parallel to the arrangement direction of the two sliders, and the double-ended screw is driven by a rotary motor for driving its rotation.

[0021] Each slider is fixedly provided with a transmission nut; the double-ended screw has two threaded portions with opposite thread directions, and the two threaded portions are respectively threadedly connected to the two transmission nuts.

[0022] In one possible implementation, the upper side of the mounting bracket has a first mounting groove, and the double-headed screw is rotatably disposed in the first mounting groove; the side of the mounting bracket has a second mounting groove communicating with the first mounting groove, and the rotating motor is fixedly disposed in the second mounting groove;

[0023] The first mounting groove has two guide holes at its bottom, and the two guide holes are slidably connected to the two sliders respectively.

[0024] In one possible implementation, both the openings of the first mounting slot and the second mounting slot are provided with sealing plates.

[0025] In one possible implementation, the bottom of the first mounting groove has a protrusion;

[0026] When the two sliders move toward each other until they both abut against the end face of the guide hole, both sliders abut against the outer side of the protrusion.

[0027] In one possible implementation, the slider has a through hole suitable for the double-ended screw to pass through, and a groove coaxial with its outer surface and the through hole; the transmission nut is fixedly disposed in the groove.

[0028] In this embodiment, the workbench can be any horizontal surface in front of the plastic film. Based on this, the lifting seat is moved by the first linear drive component, causing the elastic pad to press the plastic film onto the upper side of the workbench, ensuring that both ends of the strip hole are on either side of the plastic film facing its own width. Subsequently, the blade is moved by the second linear drive component, moving it from an idle state to a working state, thereby bringing the blade into contact with the plastic film and cutting the plastic film in two.

[0029] The gantry-type slitting device for plastic film provided in this embodiment, compared with the prior art, can replace the original scraper sliding method with a single-drop method to avoid wrinkles and thus ensure the generation of straight cuts. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in the embodiments of this application, 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 application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0031] Figure 1 A three-dimensional structural schematic diagram of a gantry-type slitting device for plastic film provided in an embodiment of this application;

[0032] Figure 2 This is one of the three-dimensional structural schematic diagrams of the first linear drive component used in the embodiments of this application;

[0033] Figure 3 This is a second three-dimensional structural schematic diagram of the first linear drive component used in the embodiments of this application;

[0034] Figure 4 This is a three-dimensional structural diagram of the slider and transmission nut used in the embodiments of this application from an exploded perspective.

[0035] Figure 5 This is a cross-sectional view of the lifting seat and blade used in the embodiments of this application in a combined state.

[0036] Figure 6 for Figure 5 A magnified view of a portion of the upper circle at point A;

[0037] Figure 7 This is a three-dimensional structural diagram of the lifting seat and elastic pad used in the embodiments of this application from an exploded view (the lifting seat is shown in a sectional view for ease of display).

[0038] Figure 8 This is a three-dimensional structural diagram of the mounting frame and workbench used in the embodiments of this application in an assembled state;

[0039] Figure 9 This is a cross-sectional view of the mounting frame and workbench used in the embodiments of this application in an assembled state;

[0040] Explanation of reference numerals in the attached drawings: 1. Mounting bracket; 11. First mounting slot; 111. Guide hole; 112. Protrusion; 12. Second mounting slot; 2. Lifting seat; 21. Storage slot; 22. Reserved hole; 3. Blade; 31. Drive handle; 4. First linear drive component; 41. Swing arm; 42. Double-ended screw; 421. Rotary motor; 5. Elastic pad; 51. Strip hole; 52. Air outlet; 6. Second linear drive component; 7. Slider; 71. Through hole; 72. Groove; 8. Transmission nut; 9. Sealing plate; 100. Worktable; 110. Sinking groove. Detailed Implementation

[0041] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0042] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0043] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application 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. Therefore, they should not be construed as limitations on this application.

[0044] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0045] Please refer to the following: Figures 1 to 9 The gantry-type slitting device for plastic film provided in this application will now be described. The gantry-type slitting device for plastic film proposed in this application includes a worktable 100, a mounting frame 1, a lifting seat 2, and a blade 3.

[0046] The worktable 100 is used to fix the plastic film to the underside; characterized in that the gantry-type slitting device further includes:

[0047] Mounting bracket 1 adopts a U-shaped structure and is fixedly installed on the upper side of the workbench 100 so that the plastic film in the translational state is inside the mounting bracket 1.

[0048] The lifting seat 2 is slidably disposed inside the mounting frame 1 in the vertical direction and is connected to a first linear drive component 4 for driving its movement; an elastic pad 5 is fixedly disposed on the lower side of the lifting seat 2, and a strip hole 51 is provided on the elastic pad 5, which is through in the vertical direction and extends in the horizontal direction; when the elastic pad 5 presses the plastic film to the upper side of the worktable 100, both ends of the strip hole 51 are on the outside of the plastic film.

[0049] The blade 3 is slidably mounted on the lifting seat 2 in the vertical direction and is connected to a second linear drive member 6 for driving its movement. When the second linear drive member 6 drives the blade 3 to move, the blade 3 has an idle state where it is stored above the elastic pad 5 and a working state where it extends below the elastic pad 5.

[0050] In this embodiment, the workbench 100 can be any horizontal surface in front of the plastic film. Based on this, the first linear drive member 4 moves the lifting seat 2, causing the elastic pad 5 to press the plastic film onto the upper side of the workbench 100, ensuring that both ends of the strip hole 51 are on either side of the plastic film facing its own width. Subsequently, the second linear drive member 6 moves the blade 3 from an idle state to a working state, causing the blade 3 to contact the plastic film and cut it into two pieces.

[0051] The gantry-type slitting device for plastic film provided in this embodiment, compared with the prior art, can replace the original scraper sliding method with a single-drop method to avoid wrinkles and thus ensure the generation of straight cuts.

[0052] In some embodiments, such as Figure 5 and Figure 6 As shown, the lower side of the lifting seat 2 is provided with a storage groove 21 that communicates with the strip hole 51.

[0053] By adopting the above technical solution, when the blade 3 is idle, the blade 3 is placed in the storage slot 21 to avoid the impact of the blade 3 being placed outside; it should be specifically noted that this impact includes a shortened service life of the blade 3 itself, and the blade 3 cutting other components when not in use.

[0054] In some embodiments, such as Figure 5 and Figure 7 As shown, the upper side of the lifting seat 2 has a reserved hole 22 that communicates with the storage slot 21, and the blade 3 has a drive handle 31 that extends through the reserved hole 22 to the upper side of the lifting seat 2. Based on this, the second linear drive component 6 is a linear cylinder that is fixedly installed on the upper side of the lifting seat 2 and is connected to the drive handle 31 for transmission, so as to realize the automatic switching of different states of the blade 3.

[0055] In some embodiments, such as Figure 6 and Figure 7 As shown, the elastic pad 5 has air vents 52 on both sides of the extension direction of the strip hole 51, and each air vent 52 is provided through the lower side of the elastic pad 5 so that when the elastic pad 5 presses the plastic film and undergoes elastic deformation, the gas on the lower side can be quickly discharged at the air vent 52.

[0056] In some embodiments, such as Figure 1 and Figure 9 As shown, the upper side of the workbench 100 is provided with a recessed groove 110 suitable for communicating with the strip hole 51. Both ends of the recessed groove 110 are on the outside of the plastic film in a translational state.

[0057] By adopting the above technical solution, when the blade 3 is in use, the blade 3 extends into the sinking groove 110.

[0058] In some embodiments, such as Figure 2 and Figure 3 As shown, the first linear drive component 4 includes two swing arms 41 and a double-ended screw 42.

[0059] Two swing arms 41 are arranged side by side horizontally on the upper side of the lifting seat 2, and both are hinged to the lifting seat 2. In this embodiment, the hinge axis of the swing arms 41 and the lifting seat 2 is parallel to the horizontal plane and perpendicular to the length direction of the lifting seat 2. Each swing arm 41 has a slider 7 hinged to its swing end. The arrangement direction of the two sliders 7 is parallel to the length direction of the lifting seat 2, and the hinge axis of the swing arms 41 and the sliders 7 is parallel to the hinge axis of the swing arms 41 and the lifting seat 2. Furthermore, the sliders 7 are slidably connected to the mounting frame 1, and this slidable connection direction is parallel to the length direction of the lifting seat 2.

[0060] The double-ended screw 42 is rotatably mounted on the mounting bracket 1, with its axis parallel to the arrangement direction of the two sliders 7, and the double-ended screw 42 is connected to a rotary motor 421 for driving its rotation.

[0061] Each slider 7 is fixedly provided with a transmission nut 8; the double-ended screw 42 has two threaded parts with opposite thread directions, and the two threaded parts are respectively threadedly connected to the two transmission nuts 8.

[0062] By adopting the above technical solution, when the rotating motor 421 drives the double-headed screw 42 to rotate, the corresponding two transmission nuts 8 are screwed in synchronously to drive the two sliders 7 to move towards each other or away from each other; on this basis, the two swing arms 41 swing synchronously to make the lifting seat 2 rise or fall, thereby achieving the technical purpose of adjusting the vertical height of the lifting seat 2.

[0063] In some embodiments, such as Figure 2 and Figure 8 As shown, a first mounting groove 11 is provided on the upper side of the mounting bracket 1, and a second mounting groove 12 communicating with the first mounting groove 11 is provided on the side of the mounting bracket 1. Based on this, the double-headed screw 42 is rotatably disposed in the first mounting groove 11, and the rotating motor 421 is fixedly disposed in the second mounting groove 12. The power output shaft of the rotating motor 421 extends out through the communication position of the first mounting groove 11 and the second mounting groove 12 and is coaxially connected with the double-headed screw 42.

[0064] In this embodiment, the bottom of the first mounting groove 11 has two guide holes 111, and the two guide holes 111 are slidably connected to the two sliders 7 respectively, so as to limit the sliding direction of the sliders 7 and realize the connection between the sliders 7 and the inner swing arm 41 of the mounting frame 1.

[0065] In some embodiments, such as Figure 8 As shown, sealing plates 9 are provided at the openings of the first mounting groove 11 and the second mounting groove 12 to seal the grooves and prevent external dust and impurities from adhering to the double-headed screw 42 or the power output shaft of the rotating motor 421, so as to facilitate lubrication and oiling.

[0066] In some embodiments, such as Figure 9 As shown, the bottom of the first mounting groove 11 has an upwardly extending protrusion 112.

[0067] By adopting the above technical solution, when the two sliders 7 move towards each other to the end face of the guide hole 111, the two sliders 7 abut against the outer side of the protrusion 112, thereby cooperating with each other to achieve the limiting and fixing of the lifting seat 2 at the highest height.

[0068] In some embodiments, such as Figure 4 As shown, the slider 7 has a through hole 71 suitable for the double-ended screw 42 to pass through, and a groove 72 that is coaxial with its outer side and the through hole 71; based on this, the aforementioned transmission nut 8 is fixedly installed in the groove 72 to realize the recessed installation of the transmission nut 8 and the cooperation between the transmission nut 8 and the double-ended screw 42.

[0069] The above content is only a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A gantry-type slitting device for plastic film, comprising a worktable for fixing the plastic film to the underside; characterized in that, The gantry-type slitting device also includes: The mounting bracket adopts a U-shaped structure and is fixedly installed on the upper side of the workbench so that the plastic film in the translational state is located inside the mounting bracket; The lifting seat is slidably disposed on the inner side of the mounting frame in the vertical direction and is connected to a first linear drive component for driving its movement; an elastic pad is fixedly disposed on the lower side of the lifting seat, and a strip-shaped hole is opened on the elastic pad that runs through in the vertical direction and extends in the horizontal direction; when the elastic pad presses the plastic film to the upper side of the worktable, both ends of the strip-shaped hole are on the outer side of the plastic film. The blade is slidably mounted on the lifting seat in the vertical direction and is connected to a second linear drive member for moving it. When the second linear drive member moves the blade, the blade has an idle state where it is stored above the elastic pad and a working state where it extends below the elastic pad.

2. The gantry-type slitting device for plastic film as described in claim 1, characterized in that, The lower side of the lifting seat is provided with a storage groove that communicates with the strip hole; When the blade is in the idle state, the blade is located in the storage slot.

3. The gantry-type slitting device for plastic film as described in claim 2, characterized in that, The upper side of the lifting seat is provided with a reserved hole that communicates with the storage slot, and the blade has a drive handle that extends through the reserved hole to the upper side of the lifting seat. The second linear drive component is a linear cylinder that is fixedly mounted on the upper side of the lifting seat and is connected to the drive handle for transmission.

4. The gantry-type slitting device for plastic film as described in claim 1, characterized in that, The elastic pad has air vents on both sides of the strip-shaped hole extending in the direction of the strip-shaped hole, and each air vent penetrates the lower side of the elastic pad.

5. The gantry-type slitting device for plastic film as described in claim 1, characterized in that, The upper side of the workbench is provided with a recessed groove suitable for communicating with the strip hole; When the blade is in the use state, the blade extends into the sinkhole.

6. The gantry-type slitting device for plastic film as described in claim 1, characterized in that, The first linear drive component includes: Two swing arms are arranged side-by-side horizontally on the upper side of the lifting base, and both are hinged to the lifting base; each swing arm has a slider hinged to its swing end, and the slider is slidably connected to the mounting frame; and A double-ended screw is rotatably mounted on the mounting bracket, with its axis parallel to the arrangement direction of the two sliders, and the double-ended screw is driven by a rotary motor for driving its rotation. Each slider is fixedly provided with a transmission nut; the double-ended screw has two threaded portions with opposite thread directions, and the two threaded portions are respectively threadedly connected to the two transmission nuts.

7. The gantry-type slitting device for plastic film as described in claim 6, characterized in that, The mounting bracket has a first mounting groove on its upper side, and the double-headed screw is rotatably disposed in the first mounting groove; the mounting bracket has a second mounting groove on its side that communicates with the first mounting groove, and the rotating motor is fixedly disposed in the second mounting groove. The first mounting groove has two guide holes at its bottom, and the two guide holes are slidably connected to the two sliders respectively.

8. The gantry-type slitting device for plastic film as described in claim 7, characterized in that, Both the first mounting slot and the second mounting slot have sealing plates at their openings.

9. The gantry-type slitting device for plastic film as described in claim 7, characterized in that, The bottom of the first mounting groove has a protrusion; When the two sliders move toward each other until they both abut against the end face of the guide hole, both sliders abut against the outer side of the protrusion.

10. The gantry-type slitting device for plastic film as described in claim 6, characterized in that, The slider has a through hole suitable for the double-ended screw to pass through, and a groove coaxial with its outer side and the through hole; the transmission nut is fixedly installed in the groove.

Images