CN203738840U - Paper cutter - Google Patents

Abstract

The utility model discloses a paper cutter. The paper cutter comprises a ruler swing arm, a lock screw, a ruler, a tip cover, a slide knob, a dial, a blade bearing assembly, a cutter base swing arm, a ruler substrate, an index plate, a tip spring, a sliding tip, a screw and the like. A regular polygon with a certain edge length and special angles of 30 degrees, 45 degrees and like can be accurately cut out by only using the paper cutter, operation is convenient, cutting efficiency is greatly improved, and the paper cutter can also be used as a common paper cutter.

Description

a paper cutter

technical field

The utility model relates to a hand tool, in particular to a paper cutter.

Background technique

Now in the manual cutting operation, it is often necessary to use a ruler to cut against or fold the paper flat, and use a paper cutter to cut the paper according to the crease, and the ordinary paper cutter must use other tools to accurately cut the paper. Polygons, and the paper cutter itself does not have the function of measuring special angles. If you need to cut regular polygons and special angles such as 30° and 45°, you need to use multiple tools to achieve it.

Utility model content

The utility model overcomes the shortcomings of the prior art and provides a paper cutter.

The utility model is achieved through the following technical solutions:

A paper cutter includes a scale swing arm, a locking screw, a scale, a center cover, a slide button, a dial, a blade seat assembly, a knife seat swing arm, a scale substrate, an index plate, a center spring, a sliding center, and a screw, The blade seat assembly includes base, blade, liner, blade seat, cover plate, knife seat spring and screws; the knife seat swing arm, scale swing arm, index plate and dial are superimposed from bottom to top and then connected by screws. The chute of the scale swing arm is equipped with a top spring and a sliding top. The top cover is fixed on the scale swing arm with screws. The slide button passes through the chute on the top cover and is fixed on the sliding top with screws. , the bottom of the scale is buckled and connected with screws, and the side of the scale is equipped with locking screws. In the blade seat assembly, a blade seat is set in the base and a knife seat spring is set between the two. The blade is fixed on the On the side of the blade seat, the cover plate is fixed above the base with screws, and the upper part of the blade seat passes through the cover plate, and the base and the lining plate buckle the chute of the swing arm of the knife seat from the top and bottom respectively and fix them with screws;

It is characterized in that the swing arm of the tool holder, the index plate and the dial are relatively fixed after installation, and the swing arm of the scale can swing relative to the swing arm of the tool holder. There is a slide groove on the top cover and a triangle arrow is marked on the side of the dial. There are triangular slots on the index plate, and each slot position corresponds to the number and angle marked on the dial installed above. After the scale and the scale substrate are installed, loosen the locking screw, and the scale can swing the arm along the scale. Sliding, push the slider to make the sliding top slide along the chute of the scale swing arm away from the dial. After releasing, the sliding top and the sliding button reset under the action of the top spring. The angles of the triangular grooves on the plate are consistent. After installation, the blade seat assembly can slide along the chute of the swing arm of the knife seat. Press the protruding upper part of the blade seat to push the blade to the cutting position. Reset under the action of seat spring.

The beneficial effects of the utility model are: using the utility model, regular polygons and special angles can be cut conveniently and accurately with only one tool, without measuring, calculating and drawing operations, which greatly improves the cutting efficiency and cutting quality, and does not require When in use, the blade is not exposed, and it is not easy to injure hands when taking it. The utility model can also be used as an ordinary paper cutter.

Description of drawings

Fig. 1 is the front view of the utility model

Fig. 2 is the back view of the utility model

Fig. 3 is an enlarged view of the front of the utility model with the dial and top cover removed

Fig. 4 is the front exploded view of the utility model

Figure 5 is a diagram of the utility model blade seat assembly

Figure 6 is an exploded view of the blade seat assembly of the present invention

Fig. 7 is a schematic diagram of a regular pentagon using the utility model to cut a side length of 10cm

Fig. 8 is a schematic diagram of a special included angle between the scale swing arm and the tool holder swing arm of the utility model

In the figure, scale swing arm 1, locking screw 2, scale 3, center cover 4, slide button 5, dial 6, blade seat assembly 7, knife seat swing arm 8, scale substrate 9, index plate 10, center Spring 11, sliding top 12, screw 13, base 14, blade 15, backing plate 16, blade seat 17, cover plate 18, knife seat spring 19.

Detailed ways

The embodiment of the present utility model will be described in detail below in conjunction with accompanying drawing:

As shown in Figures 1-6, a paper cutter includes a scale swing arm 1, a locking screw 2, a scale 3, a top cover 4, a slide button 5, a dial 6, a blade seat assembly 7, and a knife seat swing arm 8 , scale substrate 9, indexing plate 10, top spring 11, sliding top 12, screw 13, wherein the blade seat assembly 7 includes base 14, blade 15, liner 16, blade seat 17, cover plate 18, knife seat spring 19 and screw 13; knife seat swing arm 8, scale swing arm 1, indexing plate 10 and dial 6 are superimposed from bottom to top and then connected with screw 13, and the chute of scale swing arm 1 is equipped with top spring 10 and sliding The top 12, the top cover 4 is fixed on the scale swing arm 1 with the screw 13, the sliding button 5 passes through the chute on the top cover 4 and fixed on the sliding top 12 with the screw 13, the scale 2 and the scale substrate 9 are buckled from the top and bottom respectively. Hold the scale swing arm 1 and connect it with a screw 13, the side of the scale 2 is equipped with a locking screw 2, in the blade seat assembly 7, a blade seat 17 is arranged in the base 14 and a knife seat spring 19 is arranged between the two, The blade 15 is fixed on the side of the blade seat 17 with screws 13, the cover plate 18 is fixed on the top of the base 14 with screws 13, the upper part of the blade seat 17 passes through the cover plate 18, and the base 14 and the lining plate 16 buckle the knife from the top and bottom respectively. The chute of seat swing arm 8 is fixed with screw 13;

A kind of paper cutting knife described above is characterized in that after installation, the knife seat swing arm 8, the index plate 10 and the dial plate 6 are relatively fixed, and the scale swing arm 1 can swing relative to the knife seat swing arm 8, and the top cover 4 There is a chute and a triangular arrow is marked on the side of the dial 6. There is a triangular slot on the dial 10. Each slot position corresponds to the number and angle marked on the dial 6 installed above. The scale 3 After installing with the scale substrate 9, loosen the locking screw 2, the scale can slide along the scale swing arm 1, push the slide button 5 to make the sliding top 12 slide along the chute of the scale swing arm 1 away from the dial 6, After unclamping, under the action of the top spring 11, the sliding top 12 and the slide button 5 are reset. The sharp angle at the end of the sliding top 12 is consistent with the angle of the triangular groove on the index plate 10. After installation, the blade holder assembly 7 can move along the knife The chute of seat swing arm 8 slides, presses the protruding top of blade seat 17 and can promote blade 15 to the cutting position, and after unclamping, blade 15 resets with blade seat 17 under the knife seat spring 19 effect.

The working process of the present utility model is as follows: as shown in Figure 7, take the regular pentagon with cutting side length of 10cm as an example, loosen the locking screw 2, and move the scale 3 along the scale swing arm 1 to one end away from the dial; Push the slide button 5 with your finger to the end of the chute on the center cover 4 away from the dial 6, turn the scale swing arm 1 to align the number "5" on the dial 6 with the triangle arrow on the center cover 4, and then release your finger to The sliding top 12 is inserted into the corresponding triangular slot of the index plate 10 under the action of the top spring 11. At this time, the angle between the scale swing arm 1 and the tool holder swing arm 8 is the inner angle of the regular pentagon; move the scale 3 to the dial On one side, tighten the locking screw 2 to ensure that the scale 3 is fixed relative to the scale swing arm 1; lay the paper flat, press the paper with the knife holder swing arm 8, press down the protruding part of the blade holder 17 and move the blade holder assembly 7 to cut out The first side of the regular pentagon; use the ruler 3 to measure and align the 10 cm of the newly cut side, press the paper with the knife holder swing arm 8, press down the protruding part of the blade holder 17 and move the blade holder assembly 7, Cut out the next side of the regular pentagon; repeat the previous step to complete the cutting of the regular pentagon with a side length of 10cm, and the cutting method of other regular polygons is the same; Align the angle "45°" with the triangle arrow on the top cover 4, and the included angle between the scale swing arm 1 and the tool holder swing arm 8 is 45°, and the corresponding angle can be cut out.

Claims (2)

1. a paper knife, it is characterized in that comprising scale swing arm (1), lock-screw (2), scale (3), top lid (4), slider (5), dial (6), blade bearing assembly (7), tool rest swing arm (8), scale substrate (9), index dial (10), top spring (11), slide top (12), screw (13), wherein blade bearing assembly (7) comprises pedestal (14), blade (15), liner plate (16), blade bearing (17), cover plate (18), tool rest spring (19) and screw (13), tool rest swing arm (8), scale swing arm (1), index dial (10) is connected with screw (13) after superposeing from bottom to top with dial (6), top spring (10) and slide top (12) are housed in the chute of scale swing arm (1), top lid (4) is fixed on scale swing arm (1) with screw (13), slider (5) is fixed on screw (13) slide top (12) through the chute on top lid (4), scale (2) and scale substrate (9) are respectively from upper, below fastens scale swing arm (1) and connects with screw (13), scale (2) side is provided with lock-screw (2), in blade bearing assembly (7), in pedestal (14), be provided with blade bearing (17) between and be provided with tool rest spring (19), blade (15) is fixed on the side of blade bearing (17) with screw (13), cover plate (18) is fixed on pedestal (14) top with screw (13), blade bearing (17) top passes cover plate (18), pedestal (14) fastens the chute of tool rest swing arm (8) fixing with screw (13) from upper and lower respectively with liner plate (16).

2. a kind of paper knife as claimed in claim 1, it is characterized in that installing rear tool rest swing arm (8), index dial (10) is relatively-stationary with dial (6), and scale swing arm (1) tool rest swing arm (8) swing relatively, on top lid (4), there is chute and indicate triangle arrow by dial (6) one sides, on index dial (10), there is triangle fluting, numeral and the angle on the dial (6) that each slotting position is installed with top, indicated are corresponding one by one, after scale (3) is installed with scale substrate (9), unclamp lock-screw (2), scale can slide along scale swing arm (1), promote slider (5) can make to slide top (12) slide towards the direction away from dial (6) along the chute of scale swing arm (1), effect lower slider top (12) and slider (5) at top spring (11) after unclamping reset, top (12) end wedge angle angle of sliding is consistent with the upper triangle included angle of index dial (10), after installation, blade bearing assembly (7) can slide along the chute of tool rest swing arm (8), the top of pressing blade bearing (17) protrusion can promote blade (15) to cutting position, unclamping rear blade (15) resets under tool rest spring (19) effect with blade bearing (17).