A kind of Double-blade cutting machine
Technical field
The present invention relates to a kind of sewing machine, particularly relate to a kind of Double-blade cutting machine for cutting cloth.
Background technology
In cloth processing industry, in order to improve production efficiency, often needs are cut into the multilamellar cloth raw material of same shape and stack up, use Double-blade cutting machine this multilamellar cloth of cutting, cut out a laying up block of needs, facilitate subsequent production line line production.
Chinese invention patent description CN102002845B discloses a kind of Double-blade cutting machine, as depicted in figs. 1 and 2, including frame 1, chassis 2 and the motor 3 being arranged in frame 1, also include the first sliding track mechanism 4a, second sliding track mechanism 4b, first ram 5a, second ram 5b, first blade 6a, second blade 6b and drive mechanism 7, this the first sliding track mechanism 4a and the second sliding track mechanism 4b is each attached in frame 1, this first ram 5a is slidably arranged on the first sliding track mechanism 4a, and this first ram 5a one end is rotatably connected with drive mechanism 7, the other end is then fixedly linked with the first blade 6a;This second ram 5b is slidably arranged on the second sliding track mechanism 4b, and this second ram 5b one end is rotatably connected with drive mechanism 7, and the other end is then fixedly linked with the second blade 6b;nullThis drive mechanism 7 is transmitted in motor 3 and drives the first ram 5a and the second ram 5b to move in the opposite direction with identical speed,This first blade 6a and the second blade 6b is parallel to each other and separated,And each blade is mutually adjacent with the application point of cloth,This drive mechanism 7 includes main chute tooth 71、First from umbrella tooth 72a、Second from umbrella tooth 72b、First connecting rod 73a、Second connecting rod 73b,This main chute tooth 71 be fixed on motor 3 output shaft and start with motor 3 and in rotate shape,This first from umbrella tooth 72a and second from the flank of tooth of umbrella tooth 72b in be oppositely arranged and respectively bridle joint in the both sides of main chute tooth 71,This first is provided with at eccentric position on umbrella tooth 72a and makes the first the first pivoting point 74a being rotatably connected from umbrella tooth 72a and first connecting rod 73a,This second is provided with at eccentric position on umbrella tooth 72b and makes the second the second pivoting point 74b being rotatably connected from umbrella tooth 72b and second connecting rod 73b,First pivoting point 74a and the second pivoting point 74b is centrosymmetric,Its symmetrical centre be first from umbrella tooth 72a and second from the midpoint of the center of rotation line of umbrella tooth 72b.This Double-blade cutting machine, first blade and the second blade movement respectively by the first ram and the second ram, first connecting rod and second connecting rod, first drive from the transmission of umbrella tooth from umbrella tooth and second, structure is complicated, first connecting rod and second connecting rod are connected by pivot joint from umbrella tooth from umbrella tooth and second with first respectively, easily wearing and tearing, noise is big.
Summary of the invention
The technical problem to be solved is to provide a kind of simple in construction, and noise is little, the Double-blade cutting machine that efficiency is high.
For solving above-mentioned technical problem, the present invention adopts the technical scheme that: a kind of Double-blade cutting machine, including the first connecting rod and the second connecting rod that drive the first blade and the second blade to do cutting movement respectively, drive this first connecting rod and the first driven gear of second connecting rod motion and the second driven gear;It is characterized in that: the flank of tooth of described first driven gear and the second driven gear is set in parallel and point bias is fixed with the first slide block and the second slide block;The upper end of described first connecting rod and second connecting rod is respectively equipped with the chute being slidably matched with this first slide block and the second slide block, and lower end is detachably fixed is connected with described first blade and the second blade respectively.Owing to one end of connecting rod is directly connected on blade, the other end is connected on gear by slide block chute, simple in construction, and noise is little, and transmission efficiency is high.
In order to reduce the frictional dissipation of slide block and chute, as a modification of the present invention, described first slide block and the second slide block are arranged with roller needle bearing respectively.
As a modification of the present invention, the chimeric roller Needle sleeve baffle plate having set to be buckled on described roller needle bearing in described chute.
As a modification of the present invention, described roller Needle sleeve baffle plate cross section is U-shaped.
It is symmetrical arranged along the midpoint of described first driven gear and the second driven gear line of centres as a modification of the present invention, described first slide block and the second slide block.
As a modification of the present invention, described first blade and the second blade lower end with described first connecting rod and second connecting rod respectively is connected by bearing pin.
As a modification of the present invention, described first blade and the second blade lower end with described first connecting rod and second connecting rod respectively is connected by screw.
Drive by the driving gear being fixed on motor output shaft as a modification of the present invention, described first driven gear and the second driven gear.
As a modification of the present invention, described first driven gear and the second driven gear are helical gears.
Accompanying drawing explanation
Fig. 1 is the fractionation structural representation of existing a kind of Double-blade cutting machine.
Fig. 2 is the perspective view of existing a kind of Double-blade cutting machine.
The fractionation structural representation of a kind of Double-blade cutting machine that Fig. 3 provides for the present invention.
The perspective view of a kind of Double-blade cutting machine that Fig. 4 provides for the present invention, removes housing in figure.
Detailed description of the invention
As shown in Figure 3 and Figure 4, one Double-blade cutting machine of the present invention, including support 1, upper shell 11, cover plate 12, driving gear the 20, first driven gear 2a, the second driven gear 2b, first connecting rod 3a, second connecting rod 3b, the first blade 6a, the second blade 6b, chassis 7, motor.
Support 1 connects upper shell 11 and chassis 7; and for doing support and the protection of upper and lower cutting movement as the first blade 6a, the second blade 6b; connected mode and structure can use conventional structure, the structure used such as the Double-blade cutting machine in patent of invention description CN102002845B in background technology.
Upper shell 11 is fixedly connected on the top of support 1, its side has accommodating first driven gear 2a, the second driven gear 2b, first driven gear 2a and the second driven gear 2b is helical gears, and first the flank of tooth of driven gear 2a and the second driven gear 2b be set in parallel, preferably isoplanar is arranged;Opposite side is installed with driving motor, and this motor includes housing 40, stator 41, rotor 42, and driving gear 20 is fixedly mounted on motor output shaft, and the first driven gear 2a, the second driven gear 2b are driven by this driving gear 20.Motor uses non-brush permanent-magnet DC motor, that is servomotor, available computer to control motor speed, selected the most as required by using, and can ensure the stable output of power under different rotating speeds simultaneously.
Eccentrically mounted on the flank of tooth of the first driven gear 2a have the first slide block 21a, the first slide block 21a to be arranged with roller needle bearing, and this roller needle bearing includes roller pin 22 and bearing holder (housing, cover) 23;Correspondingly eccentrically mounted on the flank of tooth of the second driven gear 2b have the second slide block 21b, the second slide block 21b to be also arranged with roller needle bearing;First slide block 21a and the second slide block 21b is symmetrical arranged along the midpoint of the first driven gear 2a and the line of centres of the second driven gear 2b.
The upper end of first connecting rod 3a and second connecting rod 3b is respectively equipped with chute 31a, the 31b coordinated with this first slide block 21a and the second slide block slip 21b, the chimeric roller Needle sleeve baffle plate 24 having set to be buckled on roller needle bearing in chute 31a, 31b, roller Needle sleeve baffle plate 24 cross section is U-shaped.So along with the first driven gear 2a and the rotation of the second driven gear 2b, the first slide block 21a and the second slide block slip 21b is slidably matched with chute 31a, 31b respectively and drives first connecting rod 3a and second connecting rod 3b to move up and down.
The lower end of first connecting rod 3a and second connecting rod 3b is detachably fixed is connected with described first blade 6a and the second blade 6b respectively, and this is detachably fixed the mode being connected by routine, such as, can be connected by bearing pin 32, it is also possible to be connected by screw.
The lower end of upper shell 11 can arrange the mechanism guiding first connecting rod 3a and second connecting rod 3b to slide up and down, guide for example with installing linear bearing on groove, the mode that the ram described in background technology and sliding track mechanism can also be used to coordinate guides, the innovation place of this non-invention, no further details to be given herein.
The gear mechanism that driving gear the 20, first driven gear 2a and the second driven gear 2b forms is wrapped in interior formation gear housing also by screw securing cover plate 12, upper shell 11 and cover plate 12 by upper shell 11, plays a protective role gear mechanism.