Plastic tape slitting mechanism

Abstract

The utility model belongs to the technical field of plastic flat filament processing, and particularly relates to a plastic tape slitting mechanism which comprises a supporting plate, a sleeve is rotatably connected to the front end face of the supporting plate, a plurality of evenly-distributed sliding blocks are arranged in the sleeve, the sliding block located in the middle is fixedly connected with the sleeve, and the other sliding blocks are connected with the sleeve in a sliding mode. A threaded rod is rotationally connected into the sleeve, the sliding block located at the foremost end is in threaded connection with the threaded rod, and the other sliding blocks are all in sliding connection with the threaded rod. Through cooperation of the rotating block, the fixing disc, the L-shaped rod and the fixing bolt, the sleeve can be fixed after being rotated by 180 degrees, the cutting knives on the upper side and the lower side are alternately used, and the cutting knives can be replaced in the non-stop state; through cooperation of the threaded rods, the sliding blocks, the connecting shafts and the telescopic hinges, the multiple sliding blocks and the cutting knives can be driven to synchronously move towards the two sides or the middle, and therefore the distance between the cutting knives can be adjusted so that a plastic belt can be cut into different widths, and adjustment is convenient.

Description

Technical Field

[0001] The utility model belongs to the technical field of plastic flat wire processing, in particular to a plastic belt cutting mechanism. Background Art

[0002] The plastic flat film drawing machine generally includes a drawing machine that heats the polypropylene raw material and draws it into a plastic flat film, and a traction mechanism that draws the plastic flat film and cuts it into filaments. It is usually used in the production and processing of plastic woven bags. The filamentary plastic drawn by the plastic drawing machine can be used to make woven bags and other plastic woven materials. During the drawing process, the plastic film will be cut into filaments, and the cutting is completed by the wire cutting device.

[0003] The existing plastic strip cutting device cannot replace the blade without stopping the machine, and it is not convenient to adjust the distance between the blades. When the plastic strip needs to be cut into strips of different widths, the entire cutter needs to be replaced, which is inconvenient to use. Summary of the invention

[0004] The utility model provides a plastic strip cutting mechanism to solve the problems raised in the above background technology.

[0005] The utility model is implemented as follows: a plastic strip cutting mechanism comprises a support plate, the front end surface of the support plate is rotatably connected with a sleeve, a plurality of evenly distributed sliders are arranged inside the sleeve, the slider located in the middle is fixedly connected to the sleeve, and the remaining sliders are slidably connected to the sleeve, a threaded rod is rotatably connected to the inside of the sleeve, the slider located at the front end is threadedly connected to the threaded rod, and the remaining sliders are slidably connected to the threaded rod, the upper and lower ends of the plurality of sliders are fixedly connected to limiting blocks, the outer walls of the plurality of limiting blocks are detachably connected to cutting knives, the upper and lower ends of the sleeve are provided with sliding grooves, the plurality of limiting blocks are respectively slidably connected to the two sliding grooves, the outer walls of the plurality of sliders are provided with rectangular holes, the bottom end surfaces inside the plurality of rectangular holes are fixedly connected to connecting shafts, and the outer walls of the plurality of connecting shafts are hinged with telescopic hinges.

[0006] In order to make the sleeve rotate stably, as a preferred plastic strip cutting mechanism of the utility model, the front end face of the support plate is fixedly connected with an L-shaped rod, the front end face of the sleeve is fixedly connected with a rotating block, and the rotating block is rotatably connected to the L-shaped rod.

[0007] In order to facilitate the fixing of the sleeve, as a preferred plastic strip cutting mechanism of the utility model, the outer wall of the rotating block is fixedly connected to a fixing disk, the internal thread of the fixing disk is connected to a fixing bolt, and the outer wall of the L-shaped rod is provided with two through holes distributed up and down, and the fixing bolt is inserted into one of the through holes.

[0008] In order to limit the plastic tape, as a preferred plastic tape cutting mechanism of the utility model, the front end surface of the support plate is rotatably connected to two symmetrically distributed material guide rollers, and the front end surface of the support plate is rotatably connected to a winding roller.

[0009] In order to facilitate pressing the plastic tape onto the sleeve, as a preferred plastic tape cutting mechanism of the utility model, the height of the two guide rollers is lower than the height of the sleeve, and the height of the winding roller is higher than the height of the guide roller.

[0010] In order to facilitate the rotation of the threaded rod, as a preferred plastic strip cutting mechanism of the utility model, the front end of the threaded rod extends to the outside of the rotating block and is fixedly connected with a knob.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] The utility model can fix the sleeve after rotating 180 degrees through the cooperation of the rotating block, the fixing plate, the L-shaped rod and the fixing bolt, so that the cutting knives on the upper and lower sides can be used alternately, and the cutting knives can be replaced without stopping the machine; through the cooperation of the threaded rod, the slider, the connecting shaft and the telescopic hinge, a plurality of sliders and the cutting knives can be driven to move synchronously to the sides or the middle, so that the spacing between the cutting knives can be adjusted, so that the plastic strip can be cut into different widths, and the adjustment is convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0014] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0015] Figure 2 It is a schematic diagram of a partial cross-sectional structure of the utility model in a top view;

[0016] Figure 3 It is a three-dimensional structural schematic diagram of the slider of the utility model;

[0017] Figure 4 This is a schematic diagram of the main structure of the L-shaped rod of the utility model.

[0018] In the figure: 1. support plate; 2. sleeve; 3. L-shaped rod; 4. slide groove; 5. slider; 6. rectangular hole; 7. connecting shaft; 8. limit block; 9. cutting knife; 10. telescopic hinge; 11. rotating block; 12. threaded rod; 13. knob; 14. fixing bolt; 15. guide roller; 16. winding roller; 17. fixed disk; 18. through hole. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0020] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, in the description of the present invention, "multiple" means two or more, unless otherwise clearly and specifically defined.

[0021] See also Figure 1-4 A plastic strip cutting mechanism comprises a support plate 1, the front end surface of the support plate 1 is rotatably connected with a sleeve 2, a plurality of evenly distributed sliders 5 are arranged inside the sleeve 2, the middle slider 5 is fixedly connected to the sleeve 2, and the remaining sliders 5 are slidably connected to the sleeve 2, a threaded rod 12 is rotatably connected inside the sleeve 2, the slider 5 at the front end is threadedly connected to the threaded rod 12, and the remaining sliders 5 are slidably connected to the threaded rod 12, the upper and lower ends of the plurality of sliders 5 are fixedly connected with limit blocks 8, the outer walls of the plurality of limit blocks 8 are detachably connected with cutting knives 9, the upper and lower ends of the sleeve 2 are provided with slide grooves 4, the plurality of limit blocks 8 are slidably connected to the two slide grooves 4 respectively, the outer walls of the plurality of sliders 5 are provided with rectangular holes 6, the bottom end surfaces inside the plurality of rectangular holes 6 are fixedly connected with connecting shafts 7, and the outer walls of the plurality of connecting shafts 7 are hinged with telescopic hinges 10.

[0022] In this embodiment: when the cutting knife 9 needs to be replaced, the fixing bolt 14 is unscrewed, and then the fixing plate 17 is rotated 180°, and the fixing plate 17 drives the rotating block 11 and the sleeve 2 to rotate 180°, so that the lower cutting knife 9 is rotated to the upper side for use, and the lower cutting knife 9 can be disassembled and replaced; when the spacing of the cutting knives 9 needs to be adjusted, the threaded rod 12 is rotated by the knob 13, and the threaded rod 12 drives the slider 5 on the front side to move forward and backward, thereby driving multiple sliders 5 to slide synchronously to both sides or the middle through the telescopic hinge 10, and then the spacing of the multiple sliders 5 is synchronously adjusted, that is, the spacing of the multiple cutting knives 9 is synchronously adjusted, so that the plastic belt can be cut into different widths, and the adjustment is convenient.

[0023] As a technical optimization solution of the utility model, the front end surface of the support plate 1 is fixedly connected with an L-shaped rod 3, the front end surface of the sleeve 2 is fixedly connected with a rotating block 11, and the rotating block 11 is rotatably connected to the L-shaped rod 3.

[0024] In this embodiment, the sleeve 2 is rotatably connected to the L-shaped rod 3 via the rotating block 11, so that the sleeve 2 can rotate stably.

[0025] As a technical optimization solution of the utility model, the outer wall of the rotating block 11 is fixedly connected to a fixing plate 17, the internal thread of the fixing plate 17 is connected to a fixing bolt 14, and the outer wall of the L-shaped rod 3 is provided with two through holes 18 distributed up and down, and the fixing bolt 14 is inserted into one of the through holes 18.

[0026] In this embodiment, by inserting the fixing bolt 14 into the through hole 18 , it is convenient to fix the fixing plate 17 and the L-shaped rod 3 , that is, to fix the sleeve 2 .

[0027] As a technical optimization solution of the utility model, the front end surface of the support plate 1 is rotatably connected to two symmetrically distributed material guide rollers 15 , and the front end surface of the support plate 1 is rotatably connected to a winding roller 16 .

[0028] In this embodiment, the two guide rollers 15 are used to limit the position of the plastic tape, and the winding roller 16 is used to wind up the plastic tape.

[0029] As a technical optimization solution of the present invention, the heights of the two material guide rollers 15 are lower than the height of the sleeve 2 , and the height of the winding roller 16 is higher than the height of the material guide roller 15 .

[0030] In this embodiment: by setting the height of the two guide rollers 15 to be lower than the height of the sleeve 2, and setting the height of the winding roller 16 to be higher than the height of the guide roller 15, it is convenient to press the plastic tape on the upper end of the sleeve 2 for cutting.

[0031] As a technical optimization solution of the present invention, the front end of the threaded rod 12 extends to the outside of the rotating block 11 and is fixedly connected with a knob 13 .

[0032] In this embodiment, the threaded rod 12 is rotated by the knob 13, which saves time and effort.

[0033] The working principle of the utility model is as follows: when the cutting knife 9 needs to be replaced, the fixing bolt 14 is unscrewed, and then the fixing plate 17 is rotated 180°, and the fixing plate 17 drives the rotating block 11 and the sleeve 2 to rotate 180°, so that the lower cutting knife 9 is rotated to the upper side for use, and then the fixing bolt 14 is screwed into the corresponding through hole 18 again, and the lower cutting knife 9 can be disassembled and replaced; when the spacing of the cutting knives 9 needs to be adjusted, the threaded rod 12 is rotated by the knob 13, and the threaded rod 12 drives the slider 5 on the front side to move forward and backward, thereby driving the multiple sliders 5 to slide synchronously to the sides or the middle through the telescopic hinge 10, and then the spacing of the multiple sliders 5 is synchronously adjusted, that is, the spacing of the multiple cutting knives 9 is synchronously adjusted, so that the plastic belt can be cut into different widths, and the adjustment is convenient.

[0034] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A plastic strip cutting mechanism, comprising a support plate (1), characterized in that: The front end surface of the support plate (1) is rotatably connected to a sleeve (2), and a plurality of evenly distributed sliders (5) are arranged inside the sleeve (2). The slider (5) located in the middle is fixedly connected to the sleeve (2), and the remaining sliders (5) are slidably connected to the sleeve (2). The inside of the sleeve (2) is rotatably connected to a threaded rod (12), and the slider (5) located at the front end is threadedly connected to the threaded rod (12), and the remaining sliders (5) are all slidably connected to the threaded rod (12). The plurality of sliders ( The upper and lower ends of the sliding blocks (5) are fixedly connected with limit blocks (8), and the outer walls of the plurality of limit blocks (8) are detachably connected with cutting knives (9). The upper and lower ends of the sleeve (2) are provided with sliding grooves (4), and the plurality of limit blocks (8) are respectively slidably connected with two sliding grooves (4). The outer walls of the plurality of sliding blocks (5) are provided with rectangular holes (6), and the bottom end surfaces inside the plurality of rectangular holes (6) are fixedly connected with connecting shafts (7), and the outer walls of the plurality of connecting shafts (7) are hinged with telescopic hinges (10).

2. A plastic strip cutting mechanism according to claim 1, characterized in that: The front end surface of the support plate (1) is fixedly connected to an L-shaped rod (3), the front end surface of the sleeve (2) is fixedly connected to a rotating block (11), and the rotating block (11) is rotatably connected to the L-shaped rod (3).

3. A plastic strip cutting mechanism according to claim 2, characterized in that: The outer wall of the rotating block (11) is fixedly connected to a fixing plate (17), the inner thread of the fixing plate (17) is connected to a fixing bolt (14), the outer wall of the L-shaped rod (3) is provided with two through holes (18) distributed vertically, and the fixing bolt (14) is inserted into one of the through holes (18).

4. A plastic strip cutting mechanism according to claim 1, characterized in that: The front end surface of the support plate (1) is rotatably connected to two symmetrically distributed material guide rollers (15), and the front end surface of the support plate (1) is rotatably connected to a winding roller (16).

5. A plastic strip cutting mechanism according to claim 4, characterized in that: The heights of the two material guide rollers (15) are lower than the height of the sleeve (2), and the height of the winding roller (16) is higher than the height of the material guide rollers (15).

6. A plastic strip cutting mechanism according to claim 1, characterized in that: The front end of the threaded rod (12) extends to the outside of the rotating block (11) and is fixedly connected to a knob (13).

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