Film cutting serrated knife with variable tooth gap
By introducing a tooth pitch adjustment mechanism into the diaphragm cutting tooth knife, the problem of insufficient tooth pitch spacing when cutting thicker films is solved, and the flexible adaptability and efficient replacement of the diaphragm cutting tooth knife are achieved, and the production efficiency is improved.
Patent Information
- Application Number
- CN202421122109.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-22
- Publication Date
- 2025-01-07
- Estimated Expiration
- 2034-05-22
AI Technical Summary
When cutting thicker films, the existing membrane cutting teeth cutters cannot be cut off too much, and replacing the membrane cutting teeth cutters is time-consuming and time-consuming.
A diaphragm cutting knife with variable tooth pitch is designed. By installing fixed keys, limit slots, movable blades and butterfly screws in the bottom box of the tooth knife, users can adjust the movable blades by twisting the butterfly screws. to adjust the tooth pitch and fix the tooth pitch through the spring post and trapezoidal block to prevent changes.
It realizes flexible adjustment of the cutting teeth of the membrane cutting teeth, adapts to the cutting needs of films of different thicknesses, reduces the time and waste of replacing the blade, and improves cutting efficiency and flexibility.
Smart Images
Figure CN222309070U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of film cutting toothed knives, in particular to a film cutting toothed knives with variable tooth spacing. Background Art
[0002] The film cutting serrated knife is a tool used to cut film tapes. It is usually made of metal material, has a certain degree of sharpness and toughness, and can easily cut film tapes without damaging the surface on the back. The main feature of the film cutting serrated knife is that there are many sharp serrations on its blade, which makes it easier to cut film tapes and can reduce the contact area between the blade and the tape, thereby reducing friction and resistance and improving cutting efficiency.
[0003] However, when cutting some thicker films, the following problems may occur: 1. The tooth spacing of the film cutting tooth knife is relatively large, which cannot cut thicker films and cannot meet production requirements; 2. When replacing a new film cutting tooth knife, it is necessary to reserve spare film cutting tooth knives at ordinary times, and replacing spare tooth knives is time-consuming. In view of the above problems, a film cutting tooth knife with variable tooth spacing is proposed. Utility Model Content
[0004] The main purpose of the utility model is to provide a film cutting tooth knife with variable tooth gap spacing, which can effectively solve the problems in the background technology.
[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:
[0006] A film-cutting serrated knife with variable tooth spacing comprises a serrated knife base box and a fixed blade, two fixed keys are installed in the middle of the lower inner wall of the serrated knife base box, and blade fixing devices are respectively installed on the left and right parts of the lower inner wall of the serrated knife base box, and limiting grooves are respectively provided on the left and right inner walls of the serrated knife base box, and a limiting plate base is installed in the limiting grooves, and the limiting plate base is an "L"-shaped plate body structure, and the limiting plate base is fixedly connected to the inner wall of the serrated knife base box, and two blade fixing grooves are provided in the middle of the upper end of the fixed blade, and the fixed blade is installed on the two fixed keys through the two blade fixing grooves, and a movable blade limiting plate is installed on the upper end of the limiting plate base, and a movable blade is installed on the upper end of the movable blade limiting plate, a connecting frame is installed in the middle of the left end of the movable blade, and a top cover is installed on the upper end of the serrated knife base box.
[0007] Preferably, a screw hole is provided at the left end of the serrated knife bottom box, a butterfly screw is threadedly connected to the screw hole, the right end of the butterfly screw is rotatably connected to the connecting frame, a spring column is installed on the right inner wall of the serrated knife bottom box, and the left end of the spring column is fixedly connected to the movable blade. The movable blade can be moved by turning the butterfly screw, so that the teeth of the movable blade and the teeth of the fixed blade are staggered, thereby adjusting the tooth pitch of the film cutting serrated knife, and the spring column can limit the movable blade to prevent the movable blade from moving again when the tooth pitch is adjusted.
[0008] Preferably, a trapezoidal block base is installed on the lower inner wall of the toothed blade bottom box, the trapezoidal block base is against the limit plate base, a fixed trapezoidal block is installed on the upper end of the trapezoidal block base, screw holes are provided on the trapezoidal block base and the upper end of the fixed trapezoidal block, both left and right parts of the upper end of the movable blade are inclined surfaces, and the fixed trapezoidal block is installed on the inclined surface of the movable blade by screws. The inclined surface on the fixed trapezoidal block is adapted to the inclined surface on the movable blade, so that the fixed trapezoidal block can achieve the effect of fixing the movable blade.
[0009] Preferably, the left and right upper ends of the top cover are respectively provided with rectangular grooves, and the upper periphery of the rectangular grooves is provided with a trapezoidal block fixing baffle, and the shape and size of the trapezoidal block fixing baffle are adapted to the fixed trapezoidal block. With the fixing of the trapezoidal block fixing baffle, the fixed trapezoidal block will not slide into the inside of the toothed cutter bottom box without the fixing of screws.
[0010] Preferably, the rectangular groove and the blade fixing device correspond in position up and down and have the same size.
[0011] Preferably, the fixing key and the blade fixing slot correspond in position up and down and have the same size.
[0012] Compared with the prior art, the utility model has the following beneficial effects:
[0013] 1. The starting position overlaps with the teeth of the movable blade and the fixed blade. At this time, the tooth pitch of the film cutting knife is the largest. The movable blade can be slowly translated by slowly turning the butterfly screw by hand. As the movable blade moves, the teeth of the movable blade no longer overlap with the teeth of the fixed blade, and the tooth pitch begins to gradually decrease.
[0014] 2. By screwing the screws into the screw holes of the fixed trapezoidal block and the base of the trapezoidal block, the fixed trapezoidal block can be pressed against the inclined surface of the movable blade, thereby achieving the effect of fixing the movable blade and ensuring that the tooth pitch of the film cutting tooth knife will not change after adjusting the tooth pitch.
[0015] 3. Rectangular grooves are provided on the left and right upper ends of the top cover to facilitate the adjustment of the screw tightness, thereby achieving the adjustment effect of the movable blade. The shape and size of the trapezoidal block fixing baffle are adapted to the fixed trapezoidal block, so as to prevent the fixed trapezoidal block from falling into the bottom box of the toothed cutter when the screw is loosened. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 This is an exploded view of the overall structure of a film cutting tooth knife with variable tooth spacing according to the utility model;
[0017] Figure 2 It is a schematic diagram of the overall structure of a toothed knife bottom box of a film-cutting toothed knife with variable tooth spacing according to the utility model;
[0018] Figure 3 This is a schematic diagram of the internal structure of a film cutting tooth knife with variable tooth spacing according to the utility model;
[0019] Figure 4 for Figure 1 A magnified view of part A;
[0020] Figure 5 for Figure 2 A magnified view of part B;
[0021] Figure 6 for Figure 2 Magnified view of part C.
[0022] In the figure: 1, serrated blade bottom box; 2, blade fixing slot; 3, fixed blade; 4, movable blade limit plate; 5, connecting frame; 6, movable blade; 7, top cover; 8, limit plate base; 9, blade fixing device; 10, fixing key; 11, butterfly screw; 12, screw hole; 13, spring column; 71, rectangular slot; 72, trapezoidal block fixing baffle; 91, screw; 92, screw hole; 93, fixed trapezoidal block; 94, trapezoidal block base. DETAILED DESCRIPTION
[0023] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.
[0024] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.
[0025] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0026] like Figure 1-6 As shown, a film cutting serrated knife with variable tooth spacing comprises a serrated knife base box 1 and a fixed blade 3, two fixed keys 10 are installed in the middle of the lower inner wall of the serrated knife base box 1, and blade fixing devices 9 are respectively installed on the left and right parts of the lower inner wall of the serrated knife base box 1, and limiting grooves are respectively provided on the left and right inner walls of the serrated knife base box 1, and limiting plate bases 8 are installed in the limiting grooves, and the limiting plate base 8 is an "L"-shaped plate structure, and the limiting plate base 8 is fixedly connected to the inner wall of the serrated knife base box 1, and two blade fixing grooves 2 are provided in the middle of the upper end of the fixed blade 3, and the fixed blade 3 is installed on the two fixed keys 10 through the two blade fixing grooves 2, and a movable blade limiting plate 4 is installed on the upper end of the limiting plate base 8, and a movable blade 6 is installed on the upper end of the movable blade limiting plate 4, and a connecting frame 5 is installed in the middle of the left end of the movable blade 6, and a top cover 7 is installed on the upper end of the serrated knife base box 1.
[0027] A screw hole 12 is provided at the left end of the toothed knife bottom box 1, and a butterfly screw 11 is connected to the inner thread of the screw hole 12. The right end of the butterfly screw 11 is rotatably connected to the connecting frame 5. A spring column 13 is installed on the right inner wall of the toothed knife bottom box 1, and the left end of the spring column 13 is fixedly connected to the movable blade 6. The movable blade 6 can be moved by turning the butterfly screw 11, so that the teeth of the movable blade 6 and the teeth of the fixed blade 3 are staggered, thereby adjusting the tooth pitch of the film cutting toothed knife. The spring column 13 can limit the movable blade 6 to prevent the movable blade 6 from moving again when the tooth pitch is adjusted.
[0028] A trapezoidal block base 94 is installed on the lower inner wall of the toothed blade bottom box 1, and the trapezoidal block base 94 is against the limit plate base 8. A fixed trapezoidal block 93 is installed on the upper end of the trapezoidal block base 94. Screw holes 92 are opened on the upper ends of the trapezoidal block base 94 and the fixed trapezoidal block 93. Both the left and right parts of the upper end of the movable blade 6 are inclined surfaces, and the fixed trapezoidal block 93 is installed on the inclined surface of the movable blade 6 by screws 91. The inclined surface on the fixed trapezoidal block 93 is adapted to the inclined surface on the movable blade 6, so that the fixed trapezoidal block 93 can achieve the effect of fixing the movable blade 6.
[0029] The top cover 7 has rectangular grooves 71 at the left and right ends of the upper end, and a trapezoidal block fixing baffle 72 is installed at the outer periphery of the upper end of the rectangular groove 71. The shape and size of the trapezoidal block fixing baffle 72 are adapted to the fixed trapezoidal block 93. With the fixing of the trapezoidal block fixing baffle 72, the fixed trapezoidal block 93 will not slide into the inside of the toothed cutter bottom box 1 without the fixing of the screw 91.
[0030] It should be noted that the utility model is a film cutting tooth knife with variable tooth spacing. First, the butterfly screw 11 threadedly connected to the screw hole 12 is manually rotated, and the right end of the butterfly screw 11 is rotatably connected to the connecting frame 5 installed on the movable blade 6, so that the movable blade 6 begins to move on the movable blade limiting plate 4. As the movable blade 6 moves, the teeth of the movable blade 6 and the teeth of the fixed blade 3 no longer overlap, and the tooth pitch of the film cutting tooth knife begins to decrease. After the tooth pitch is adjusted, the spring column 13 can limit the movable blade 6 to prevent the movable blade 6 from moving again after the tooth pitch is adjusted. The screw 91 can be screwed into the screw hole 92 of the fixed trapezoidal block 93 and the trapezoidal block base 94 through the rectangular groove 71 of the top cover 7, so that the fixed trapezoidal block 93 fixed to the trapezoidal block base 94 can fix the inclined surface on the movable blade 6, thereby fixing the movable blade 6 and ensuring that the tooth pitch of the film cutting tooth knife no longer changes.
[0031] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.
Claims
1. A film cutting toothed knife with variable tooth spacing, comprising a toothed knife bottom box (1) and a fixed blade (3), characterized in that: Two fixing keys (10) are installed at the middle of the lower inner wall of the serrated blade base box (1); blade fixing devices (9) are installed at the left and right parts of the lower inner wall of the serrated blade base box (1); limiting grooves are respectively provided at the left and right inner walls of the serrated blade base box (1); limiting plate bases (8) are installed in the limiting grooves; the limiting plate bases (8) are "L"-shaped plate structures; the limiting plate bases (8) are fixedly connected to the inner wall of the serrated blade base box (1); two blade fixing grooves (2) are provided at the middle of the upper end of the fixed blade (3); the fixed blade (3) is installed on the two fixing keys (10) through the two blade fixing grooves (2); a movable blade limiting plate (4) is installed at the upper end of the limiting plate base (8); a movable blade (6) is installed at the upper end of the movable blade limiting plate (4); a connecting frame (5) is installed at the middle of the left end of the movable blade (6); and a top cover (7) is installed at the upper end of the serrated blade base box (1).
2. The film cutting tooth knife with variable tooth spacing according to claim 1, characterized in that: A screw hole (12) is formed at the left end of the serrated blade base box (1), a butterfly screw (11) is connected to the inner thread of the screw hole (12), the right end of the butterfly screw (11) is rotatably connected to the connecting frame (5), a spring column (13) is installed on the right inner wall of the serrated blade base box (1), and the left end of the spring column (13) is fixedly connected to the movable blade (6).
3. The film cutting tooth knife with variable tooth spacing according to claim 1, characterized in that: A trapezoidal block base (94) is installed on the lower inner wall of the toothed blade base box (1), the trapezoidal block base (94) is abutted against the limit plate base (8), a fixed trapezoidal block (93) is installed on the upper end of the trapezoidal block base (94), screw holes (92) are opened on the upper ends of the trapezoidal block base (94) and the fixed trapezoidal block (93), both left and right parts of the upper end of the movable blade (6) are inclined surfaces, and the fixed trapezoidal block (93) is installed on the inclined surface of the movable blade (6) by means of screws (91).
4. The film cutting tooth knife with variable tooth spacing according to claim 1, characterized in that: The top cover (7) has rectangular grooves (71) at the left and right upper ends, respectively. A trapezoidal block fixing baffle (72) is installed on the periphery of the upper end of the rectangular groove (71). The shape and size of the trapezoidal block fixing baffle (72) are adapted to the fixed trapezoidal block (93).
5. The film cutting tooth knife with variable tooth spacing according to claim 4, characterized in that: The rectangular groove (71) and the blade fixing device (9) correspond in position up and down and have the same size.
6. The film cutting tooth knife with variable tooth spacing according to claim 1, characterized in that: The fixing key (10) and the blade fixing slot (2) correspond in position up and down and have the same size.