CN202192327U

CN202192327U - Sawing tool

Info

Publication number: CN202192327U
Application number: CN2011200675278U
Authority: CN
Inventors: 周红陶; 吴金花
Original assignee: Nanjing Chervon Industry Co Ltd
Current assignee: Nanjing Chervon Industry Co Ltd
Priority date: 2011-03-11
Filing date: 2011-03-11
Publication date: 2012-04-18
Anticipated expiration: 2021-03-11

Abstract

The utility model provides a sawing tool, which comprises a shell, a motor, a switch and a transmission mechanism, wherein the motor is mounted in the shell, the switch is used for turning on the motor, and the transmission mechanism is driven by the motor. The transmission mechanism comprises a first eccentric block, a second eccentric block, a first rod, a second rod and a first cutter, the first eccentric block and the second eccentric block are respectively provided with a rotation axis, the first rod is driven to reciprocate by the first eccentric block, the second rod is driven to reciprocate by the second eccentric block, the first cutter comprises a first blade and a second blade, the first blade is mounted on the first rod, the second blade is mounted on the second rod, and the distance between a blade abutted surface of the first cutter and the central line of the motor is smaller than or equal to 10mm. By the aid of the scheme, an operator can perform stable sawing by using the sawing tool, so that sawing efficiency is improved greatly.

Description

A kind of sawing cutter

Technical field

The utility model relates to a kind of sawing cutter.

Background technology

The various cutters that are used for sawing are arranged in the market, though this type cutter uses two saw blades to carry out sawing, guarantee utensil when sawing steadily; But in some cases; Still there is certain instability in two saw blade sawings, cause the stationarity of utensil still relatively poor, thereby the operator are when operation utensil; Fluctuation of service, efficient is lower.

Summary of the invention

The problem that the utility model solves provides a kind of sawing cutter of stablizing sawing.

For addressing the above problem, the sawing cutter that the utility model provides comprises a casing, a motor that is installed in the casing; The switch of a unlatching motor; One transmission mechanism comprises first eccentric block and second eccentric block by motor-driven transmission mechanism, and first eccentric block and second eccentric block have a rotation; Drive and first bar that moves reciprocatingly and second bar that drives and move reciprocatingly by second eccentric block by first eccentric block; One first cutter, first cutter comprise first blade that is installed on first bar and are installed to second blade on second bar, and the blade binding face of first cutter is less than or equal to 10mm apart from the distance of motor center line.

Through such scheme, the operator uses the sawing cutter of the utility model can realize stablizing sawing, improves cutting-rate greatly.

Description of drawings

Fig. 1 is the stereogram of the utility model sawing cutter;

Fig. 2 is the cut-away view after the utility model sawing cutter is removed casing;

Fig. 3 is the cut-away view after the utility model sawing cutter is removed casing;

Fig. 4 is the cutaway view of first cutter of the utility model sawing cutter use;

Fig. 5 is the front view of first cutter of the utility model sawing cutter use;

Fig. 6 is the enlarged drawing at B place among Fig. 4;

Fig. 7 is the enlarged drawing at D place among Fig. 4;

Fig. 8 is the cutaway view of second cutter of the utility model sawing cutter use;

Fig. 9 is the front view of second cutter of the utility model sawing cutter use;

Figure 10 is the enlarged drawing at C place among Fig. 8;

Figure 11 is the enlarged drawing at A place among Fig. 9;

Figure 12 has shown blade binding face and the position relation of motor center line and the stressed sketch map of blade of first cutter of the utility model sawing cutter.

The specific embodiment

Like Fig. 1, the sawing cutter of the utility model comprises casing 1, and casing 1 is formed with front end first grip portions 2 and rear end second grip portions 3; First grip portions 2 has one first center line, and second grip portions 3 has one second center line, and first center line is parallel to second center line; First center line and second center line are preferably same center line X, and a power brick 5 is installed on second grip portions 3, and power brick 5 has one the 3rd center line Y; Angle between the 3rd center line Y and the center line X is spent between 90 degree 0; In other words, said the 3rd center line and said first or second center line preferably are the angle of one 30 degree at an angle.

Like Fig. 1, shown in 2 and 3; Motor 6 is installed in second grip portions 3; A first bar 10a and the second bar 10b that is installed in the casing who is installed in the casing 1; In the present embodiment, a transmission mechanism is used for rotatablely moving of motor 6 converted to the reverse reciprocating motion of the first bar 10a and the second bar 10b.In addition, the first bar 10a also can be fixedly installed in the casing, and only has the second bar 10b to move reciprocatingly, and also can realize the purpose of the utility model.Transmission mechanism comprises a pair of roller gear 7a and 7b, a pair of conical gear 8a and 8b and a pair ofly is installed on the gear shaft 9 that center line is O and phase place is the first eccentric block 9a and the second eccentric block 9b of 180 degree; The center line O. first eccentric block 9a and the second eccentric block 9b that the rotation of the first eccentric block 9a and the second eccentric block 9b is gear shaft 9 are installed in respectively in the waist-shaped hole of the first bar 10a and the second bar 10b; Support through a guide pad 11 in the middle of the first bar 10a and the second bar 10b; The other end of the first bar 10a and the second bar 10b is separately installed with

chuck

12a and 12b; Chuck 12a and 12b are used for clamping

first cutter

100 or 200. switches 4 of second cutter and are installed in and are used for starter motor 6. on the casing 1 when operator's console switch 4; Starter motor 6; Motor 6 drive installations are rotated to the roller gear 7a on the motor output shaft; Roller gear 7a drives the roller gear 7b rotation with its engagement, and the other end of the gear shaft of roller gear 7b is equipped with conical gear 8a, and the gear shaft 9 of conical gear 8b is installed on the casing 1; Conical gear 8a drives conical gear 8b rotation; Eccentric block 9a, 9b that a pair of phase place on the gear shaft 9 of conical gear 8b is 180 degree drive the first bar 10a respectively and the second bar 10b does reverse reciprocating motion, and first cutter or second cutter are installed to be on the heterodromous first bar 10a and the second bar 10b, thereby the reciprocating motion that realizes first cutter or second cutter realizes the sawing function.The transmission mechanism of the utility model also can be realized by other modes in addition, as long as can rotatablely moving of motor be converted into the reciprocating motion of cutter.

Like Fig. 4,5, shown in 6 and 7, shown that first cutter, 100. first cutters 100 of the utility model are mainly used in the not hard material of cutting, like materials such as heat-preservation cotton and silk flosssilk waddings.First cutter 100 comprises the first blade 100a and the second blade 100b; Rivet 14 orders are passed circular hole, lining 15 and the pad 16 on the second blade 100b; The other end through rivet 14 rivets; Make win blade 100a and second blade 100b applying, lining 15 slides in the waist-shaped hole of the first blade 100a, realizes moving back and forth between two blades.To those skilled in the art, two blades also have other connected mode to realize moving back and forth against each other.The first blade 100a is installed on the chuck 12a, and the second blade 100b is installed on the chuck 12b.The first blade 100a preferably has identical profile of tooth, rack saw and tooth depth with the second blade 100b.In order to realize efficient shearing; The tooth depth of cutter tooth is usually more than or equal to 5mm; As in the utility model for the 8mm. first blade 100a and the second blade 100b comprise a series of cutters tooth respectively, a series of cutters tooth have the first tooth pitch P1, tooth pitch is the distance of a certain adjacent gear tip clearance on the blade here.The zone that forms between two blades, the two adjacent swords is a cutting zone, and the A of two blades among the figure, B dot spacing are from being exactly cutting zone, in the front view of two blades; This cutting zone forms certain opening; Supply the fiber soft material to fill in, and this opening must greatly and deeply, the degree of depth be that tooth depth is greater than 5mm usually; Tooth depth is the distance between at the bottom of tooth top and the tooth of a certain tooth on the blade here, could guarantee that fibrous material fills in cutting zone.Because of materials such as heat-preservation cotton are very soft, only need it be cut off, need not cut down unnecessary crumb; So blade adopts the mode of cutting more suitable, the cutting edge of two blades is towards two blade binding face Z1-Z1, and promptly blade cutting edge angle angle is not more than 90 °; And the shape of cutter tooth is symmetry as far as possible, and promptly two of a tooth swords are preferably equilateral, in the time of avoiding two blade cuts like this; The oriented lopsided trend of soft material is convenient to cutting more.

Shown in Fig. 8-11, shown that second cutter, 200. second cutters 200 of the utility model are mainly used in the harder material of cutting, like materials such as wood, plasterboards.Second cutter 200 comprises the first saw blade 200a and the second saw blade 200b, and the first saw blade 200a and the second saw blade 200b are through fitting together and can do relatively reciprocating motion each other with the first blade 100a and the identical connected mode of the second blade 100b.The first saw blade 200a is installed on the chuck 12a, and the second saw blade 200b is installed on the chuck 12b.The first saw blade 200a preferably has identical profile of tooth, rack saw and tooth depth with the second saw blade 200b, and saw blade 200a and 200b oppositely are installed together, and sees from the saw blade front that promptly the sawtooth inclination angle of saw blade 200a and 200b after the installation is opposite, like Fig. 9.The first saw blade 200a and the second saw blade 200b comprise a series of sawtooth respectively, and a series of sawtooth have the second tooth pitch P2, and tooth pitch is the distance of a certain adjacent gear tip clearance on the saw blade here.In order to realize efficient sawing, the tooth depth of sawtooth is not more than 5mm usually, and the utility model tooth depth is 3mm.Like Figure 11, the saw blade edge direction is not limited to a side, and promptly cutting edge has outwardly, also has inwardly; The saw blade flute profile is asymmetric, two saw blades after the installation, and the angle of inclination of its sword is opposite, makes the sawing simultaneously of two saw blades like this; Chip removal simultaneously, the power that promptly is applied on two saw blades is the same, helps the balance of machine.The tooth of saw blade has outside minute tooth in addition, and the seam that cuts out like this is wider than two saw blade thickness, can binding.In order to guarantee that cutting edge is sharp, anglel and angle2 are the angle between tooth portion same side and saw blade binding face Z2-Z2 on arbitrary saw blade among Figure 10, and angle angle1 preferably is not less than 90 °, and angle2 is not more than 90 degree.In order to improve cutting efficiency, angle1 and angle2 are preferably one by one at interval.When the operator cut soft material, the operator was installed to first cutter on the chuck; When the operator need cut hard material, the operator only need change second cutter, thereby can realize carrying out sawing to different operating modes.

Shown in figure 12; Under actual conditions; The first blade 100a of first cutter 100 and the second blade 100b be in cutting during soft material, and the frictional force that receives because of the reciprocal first bar 10a of the 100b that drives the first blade 100a and second blade and the second bar 10b does not wait, and synchronization; The number of teeth that the first blade 100a and the second blade 100b participate in cutting is factor not or the like; Cause the directed force F 1 that is applied on the first blade 100a and the second blade 100b not wait with F2, having the binding face P of a Δ F. first blade 100a and the second blade 100b and the distance of motor center line Q is L, and then out-of-balance force Δ F is to the moment M=Δ F * L at motor 6 centers.The existence of M can make win blade 100a and the second blade 100b in cutting process, receive a moment of torsion around motor 6 centers, thereby the first blade 100a and the second blade 100b constantly swing, and causes cutting efficiency to descend.Because the restriction Δ F of structure can not reduce, and reduces the moment M of out-of-balance force Δ F to motor 6 centers through reducing L, when L was not more than 10mm, utensil can more steadily cut.Preferably, the binding face P of the first blade 100a and the second blade 100b and motor center line Q coplane.In addition; The center line Q of motor 6 is parallel with the center line of second grip portions 3, preferably overlaps and is same center line X, and the center line of second grip portions 3 is parallel with the center line of first grip portions 2; Preferably overlap; Thereby the center line of the binding face P of the first blade 100a and the second blade 100b and motor center line Q, first grip portions 2 and the center line coplane of second grip portions 3, such structure, utensil is steady more when utensil cuts, cutting efficiency is higher.Equally, when utensil uses second cutter, because sawing is to liking branch; Be more prone to rock, the swing of the first saw blade 200a and the second saw blade 200b and branch rock admixed together after, whole sawing process can be not steady more; Cause cutting efficiency sharply to descend, even can't work.When the binding face of the first saw blade 200a and the second saw blade 200b and the distance of motor center line were not more than 10mm, utensil can be realized more steadily sawing.Preferably, the binding face of the first saw blade 200a and the second saw blade 200b and motor center line coplane.In addition, the center line of motor center line, first grip portions 2 and the center line of second grip portions 3 are parallel, preferably overlap.The center line coplane of the center line of the binding face of the first saw blade 200a and the second saw blade 200b and motor center line, first grip portions 2 and second grip portions 3, such structure, when the utensil sawing more steadily, cutting efficiency is higher.

As shown in Figure 1, the structure of handle before and after this appliance design becomes, when the user when carrying out shearing manipulation because workpiece is softer, shearing force is less, utensil is balance relatively, the operator can use second grip portions 3 to operate; When the user is carrying out sawing when operation, because workpiece is harder, sawing force is bigger; Add when flexible workpiece such as sawing branch; The utensil balance is relatively poor relatively, and the operator can grip first grip portions 2 and operate, and can guarantee utensil smooth working as far as possible relatively like this; Also but both hands grip and operate in addition, thereby realize reliable and stable sawing.On the other hand; Through switch 4 being arranged between first grip portions 2 and second grip portions 3; And guarantee that the operator can pass through the same hand console switch 4 again when being hold by one hand first grip portions 2, when being hold by one hand second grip portions 3, also can pass through the same hand console switch 4 equally.Operator's one-hand operation utensil is increased work efficiency greatly like this.In addition; Because the sawing cutter of the utility model is when using second cutter to carry out sawing; Because workpiece is harder, required sawing force is also bigger, can realize the function of sawing and shearing efficiently for the sawing cutter that guarantees the utility model; At least 3.6 volts of the nominal voltages of the power brick 5 of the utility model are preferably 10.8 volts.Power brick 5 is preferably used lithium battery battery bag, nickel-cadmium cell bag or super capacitor.

Only be wherein several kinds of specific embodiment of the utility model shown in the description of preceding text and the accompanying drawing, it is main with claims that the utility model requires the scope of protection.Through the understanding to preceding text description and accompanying drawing, those of ordinary skill in the art is through same mode, and perhaps with the form through simple replacement, non-creativeness ground is simply replaced partial component and is regarded as in the scope of the utility model protection.

Claims

1. sawing cutter; Comprise a casing, a motor that is installed in the casing, the switch of a unlatching motor; One by motor-driven transmission mechanism; Said transmission mechanism comprises first eccentric block and second eccentric block, and said first eccentric block and said second eccentric block have a rotation, is driven and first bar that moves reciprocatingly and second bar that is driven and moved reciprocatingly by said second eccentric block by said first eccentric block; One first cutter; Said first cutter comprises first blade that is installed on first bar and is installed to second blade on said second bar, it is characterized in that the blade binding face of said first cutter is less than or equal to 10mm apart from the distance of motor center line.

2. sawing cutter as claimed in claim 1 is characterized in that, said first cutter can be replaced by second cutter, and said second cutter comprises first saw blade that is installed on first bar and is installed to second saw blade on said second bar.

3. sawing cutter as claimed in claim 2 is characterized in that, the saw blade binding face of said second cutter is less than or equal to 10mm apart from the distance of motor center line.

4. sawing cutter as claimed in claim 3 is characterized in that, the saw blade binding face of said second cutter and motor center line coplane.

5. like any described sawing cutter of claim 1-4, it is characterized in that the blade binding face of said first cutter and motor center line coplane.

6. like any described sawing cutter of claim 1-4, it is characterized in that said casing front end is formed with first grip portions, said casing rear end is formed with second grip portions.

7. sawing cutter as claimed in claim 6 is characterized in that, said first grip portions is formed with first center line, and said second grip portions is formed with second center line, and said motor center line is parallel with said first center line or said second center line.

8. sawing cutter as claimed in claim 6 is characterized in that, said first grip portions is formed with first center line, and said second grip portions is formed with second center line, said motor center line and said first center line or the said second center line coplane.

9. sawing cutter as claimed in claim 6 is characterized in that, said switch is between said first grip portions and said second grip portions.

10. sawing cutter as claimed in claim 6 is characterized in that, said motor is positioned at said second grip portions.

11. sawing cutter as claimed in claim 6 is characterized in that said sawing cutter also comprises the power brick of a drive motors, said power brick is connected to said second grip portions.

12. sawing cutter as claimed in claim 11 is characterized in that said power brick forms the 3rd center line, said the 3rd center line and said first or second center line are at an angle.

13. sawing cutter as claimed in claim 12 is characterized in that, said angle is spent between 90 degree 0.

14. sawing cutter as claimed in claim 13 is characterized in that, the angle ranging from 30 degree.

15., be characterised in that the power brick of a drive motors also is installed on the said casing, and the nominal voltage of said power brick is at least 3.6 volts like any described sawing cutter of claim 1-4.

16. sawing cutter as claimed in claim 15 is characterised in that, the nominal voltage of said power brick is at least 10.8 volts.

17. sawing cutter as claimed in claim 16; It is characterized in that; Said casing front end is formed with first grip portions, and said casing rear end is formed with second grip portions, and said first grip portions is formed with first center line; Said second grip portions is formed with second center line, and said motor center line is parallel with said first center line or said second center line.

18. sawing cutter as claimed in claim 17 is characterized in that, said power brick is connected to said second grip portions and is formed with the 3rd center line, and said the 3rd center line and said first or second center line are at an angle.

19. sawing cutter as claimed in claim 18 is characterized in that, the angle ranging from 0 to spend between 90 degree.

20. sawing cutter as claimed in claim 19 is characterized in that, the angle ranging from 30 degree.