CN2524895Y

CN2524895Y - Cutting tools

Info

Publication number: CN2524895Y
Application number: CN 02215508
Authority: CN
Inventors: 张玉军
Original assignee: Jilin Province Machinery Shanghai Import & Export Co Ltd
Current assignee: Jilin Province Machinery Shanghai Import & Export Co Ltd
Priority date: 2002-02-01
Filing date: 2002-02-01
Publication date: 2002-12-11
Anticipated expiration: 2012-02-01

Abstract

The utility model discloses a cutting tool, which comprises horizontally arranged U-shaped slot holes(26a, 26b) arranged on a position adjacent to central position of a cutter casing. L-shaped spring plates(29a, 29b) are positioned inside the cutter casing and have an extended end perpendicular to a paper plane. When the L-shaped spring plates(29a, 29b) perpendicular to the paper plane are back to the U-shaped slot holes(26a, 26b), spring(24a, 24b) are positioned in a state of compression by cutter frames(23a, 23b), thus the L-shaped spring plates(29a, 29b) perpendicular to the paper plane are automatically bounced and back inside the U-shaped slot holes(26a, 26b) under the action of the springing force, thereby achieving the function of cutting of twin-head under the precondition of guaranteeing the safety.

Description

Cutting tool

Invention field

The utility model relates to a kind of cutting tool.

Background technology

Cutting tool is an instrument commonly used in a kind of daily life, for example can be used for cutting paper, asphalt felt etc.Fig. 1 is a kind of schematic diagram of commercially available cutter, as shown in Figure 1, these cutter are by the cutter shell 11 that comprises inner chamber body 11a, cutter shell head 12 and blade keeper 13 constitute, wherein an end of cutter shell 11 is offered flat slit 11c for blade turnover cutter shell, the opening of inner chamber body 11a, at its edge of opening chute 11b is set, the other end of cutter shell 11 is to be opening, therefore can embed the chute 11b of cutter shell 11 with the cutter shell head of protruding 12a, the shape of blade keeper 13 as shown in Figure 1, top shoe 13a, sliding block 13b and, connecting rod 13c and protruding 13d are integrally formed, and top shoe 13a moves along chute 11b upper surface in inner chamber body 11a, and sliding block 13b moves along lower surface, thereby blade embeds protruding 13d and moves with keeper 13, by with the frictional force of chute 11b, blade keeper 13 can be positioned at arbitrary position of chute 11b.

But in use there are some defectives in the cutter of the above-mentioned type.For example, this cutter once can only select for use a kind of blade to use, if select dissimilar blades for use, then need to extract the blade that cutter shell head and blade keeper more renew, this often uses the occasion of several dissimilar blades just to seem cumbersome at needs.In addition, because the location of blade relies on the frictional force of blade keeper and chute, so when causing frictional force to reduce because of the use wearing and tearing, blade will skid off out the edge of a knife with comparalive ease, brings potential safety hazard.

Summary of the invention

Therefore, the purpose of this utility model provides a kind of cutting tool that can use two kinds of blades and blade firm position simultaneously.

Comprise according to cutting tool of the present utility model: two ends all offer out the preceding half cutter shell and the later half cutter shell of the edge of a knife, offer screw and fasten them together the complete cutter shell of formation at its middle part, side by screw, lower surface offers chute thereon, and its inner surface is convex and is offering the U-lag mouth that along continuous straight runs is provided with near cutter shell central position near the place, two ends; The L shaped reed that is positioned at cutter shell inside and forms by a vertical paper extension and parallel paper extension, under nature, upspringing to cutter shell outside direction with the junction of vertical paper extension in parallel paper extension; Be fixed on the vertical paper extension and the junction of parallel paper part and the hanging block that moves along chute of L shaped reed; Thereby connect the knife rest that moves with hanging block and reed with L shaped reed; And the spring that is fixed in cutter shell central interior, wherein spring is in by the knife rest oppression state when the vertical paper of L shaped reed extension retreats to the U-lag mouth.

The accompanying drawing summary

Fig. 1 is a kind of schematic diagram of commercially available cutter;

Fig. 2 is the cut-away view according to cutting tool of the present utility model; And

Fig. 3 is the vertical view according to cutting tool of the present utility model.

The description of preferred embodiment

Fig. 2 and 3 shows a kind of according to cutting tool of the present utility model.As shown in the figure, this cutter comprises

knife rest

23a and 23b, hanging

block

21a and 21b,

spring

24a and 24b and reed 29a and the reed 29b that two ends all offer out the preceding half cutter shell 25a of the edge of a knife and later half cutter shell 25b, place current use blade.Preceding half cutter shell 25a and later half cutter shell 25b offer screw 27 at its middle part, side, fasten them together by screw thus and constitute complete cutter shell, lower surface offers

chute

28a and 28b thereon, and its inner surface is offering U-lag mouth 26a and the 26b that along continuous straight runs is provided with near cutter shell two ends place's inwardly protruding and at close cutter shell middle position.L shaped reed 29a (29b) is positioned at cutter shell inside and is made up of with parallel paper extension vertical paper extension, under nature, upspringing to cutter shell outside direction with the junction of vertical paper extension in parallel paper extension, hanging block 21a (21b) is fixed on the vertical paper of L shaped reed extension and moves with the junction of parallel paper extension and along chute 28a (28b), knife rest 23a (23b) with reed 29a (29b) thus connect with hanging block and reed and move,

spring

24a and 24b are fixed in cutter shell central interior.Particularly, (24a, position 24b) is set to that (29a, 29b) vertical paper extension retreats to the U-lag mouth (26a, in the time of 26b), (24a 24b) is in by knife rest (23a, 23b) oppression state spring when L shaped reed to spring.In addition, preceding half cutter shell (25a) or later half cutter shell (25b) inner surface be provided with some and blade back-trough mutually the positioning convex point of embedding be used for fixing the spare blade of storage.

In Fig. 2, what place among the knife rest 23a is ox head blade and what place among the knife rest 23b is ordinary blade.When blade is in when stretching out cutter shelly attitude, hanging

block

21a and 21b are in position shown in Figure 2, this moment, hanging block marched to the tail end of

chute

28a and 28b, can't move to cutter shell direction of both ends again, on the other hand, upspring to cutter shell outside direction under nature in the coupling part of

reed

29a and 29b and hanging

block

21a and 21b (being vertical paper extension and the junction of parallel paper extension), make the vertical paper of L shaped reed extension be stopped and can't be, so blade and knife rest be fixed to cutter shell central mobile by cutter shell inner surface projection.

When blade need be retracted into the cutter shell, pressing hanging block 21a (21b) does not put, then to cutter shell central mobile, knife rest 23a (23b) and blade are also thereupon to cutter shell central mobile, also pressuring spring 24a (24b) of knife rest 23a (23b) when the vertical paper extension of L shaped reed 29a (29b) retreats to U-lag mouth 26a (26b) unclamps hanging block 21a (21b) this moment and will make this vertical paper part upspring automatically and be retracted under the effect of spring 24a (24b) in the U-lag mouth 26a (26b).Obviously, when needs made blade stretch out the cutter shell once more, the hanging block 21a (21b) that presses must just can move out cutter to cutter shell two ends to a bit of distance side of cutter shell central mobile earlier then, and blade stretches out the cutter shell because of being subjected to the unidirectional force effect in having avoided thus using.

Therefore cutting tool of the present utility model is the cutter that a kind of double end goes out cutter, can use two kinds of dissimilar blades simultaneously, has improved operating efficiency.On the other hand, because at the inner employing of cutter shell U-lag mouth mechanism, so can avoid having stopped potential safety hazard because of careless touching cutter causes blade to stretch out the cutter shell.

Claims

1. cutting tool is characterized in that comprising:

Two ends all offer out the preceding half cutter shell (25a) and the later half cutter shell (25b) of the edge of a knife, offer screw (27) and fasten them together the complete cutter shell of formation at its middle part, side by screw, lower surface offers chute (28) thereon, its inner surface near two ends places be convex and offer near cutter shell central position the U-lag mouth that along continuous straight runs is provided with (26a, 26b);

The L shaped reed that is positioned at cutter shell inside and forms by a vertical paper extension and parallel paper extension (29a, 29b), under nature, upspringing to cutter shell outside direction with the junction of vertical paper extension in parallel paper extension;

Be fixed on L shaped reed (29a, parallel paper extension 29b) and the junction of vertical paper extension and the hanging block that moves along chute (28) (21a, 21b);

With L shaped reed (29a, thus 29b) connect with hanging block (21a, 21b) and reed (29a, 29b) mobile together knife rest (23a, 23b); And

Be fixed in cutter shell central interior spring (24a, 24b),

Wherein (29a, 29b) vertical paper extension retreats to the U-lag mouth (26a, (24a 24b) is in by knife rest (23a, 23b) oppression state spring in the time of 26b) when L shaped reed.

2. cutting tool as claimed in claim 1, it is characterized in that preceding half cutter shell (25a) or after do cutter shell (26b) inner surface be provided with some and blade back-trough mutually the positioning convex point of embedding be used for fixing the spare blade of storage.