The cam positioning apparatus of labelling machine
Technical field
The utility model relates to a kind of cam positioning apparatus of labelling machine.
Background technology
In prior art, the cam positioning apparatus of labelling machine adopts gear segment mates cam determination labeling position.Technical scheme disclosed in Chinese utility model patent specification sheets CN200939954Y, CN203865126U, can realize locating labeling.But due to the impact of the factor such as Mismachining tolerance, assembly error, roller can be caused in coordinating with cam rail to there is gap, make roller cannot be close to cam rail and run, cause positioning precision low, the appearance of the technical matterss such as less stable.
Summary of the invention
The purpose of this utility model is to provide a kind of cam positioning apparatus improving the labelling machine of positioning precision and stability.
Above-mentioned purpose is achieved by the following technical solution:
The cam positioning apparatus of labelling machine, comprise rotating disk, face cam, can the bottle supporting device of support bottle and swinging gear, bottle supporting device is rotatably installed on rotating disk, swinging gear orders about bottle supporting device and swings, face cam is provided with the cam rail of specific curves, swinging gear comprises quadrant gear and roller, quadrant gear is rotatably installed on rotating disk, roller is rotatably installed on quadrant gear, and roller runs along cam rail, bottle supporting device is provided with the miniature gears engaged with quadrant gear, described swinging gear is provided with the elasticity pretension element making roller be close to cam rail all the time.
The utility model can make roller be close to cam rail operation all the time by arranging elasticity pretension element, reduce the gap existed between roller and cam rail of even eliminating because the factor such as Mismachining tolerance, assembly error causes, improve positioning precision and stability, the reliability of labeling work is provided, improves labeling qualification rate.
Technique scheme can adopt following measure to be improved further:
Described elasticity pretension element is spring.
Described spring is hung between rotating disk and quadrant gear.This technical scheme structure is simple.
The quantity of bottle supporting device is multiple, multiple bottle supporting device rotate dish axis be circumference in equal parts shape distribute, each bottle supporting device is furnished with a swinging gear, and described spring is hung between two adjacent quadrant gears.This Technical Design is novel, makes each roller produce interlock effect, effectively reduces the gap existed between roller and cam rail of even eliminating because the factor such as Mismachining tolerance, assembly error causes.
Rotating disk is installed with gear wheel shaft; Described quadrant gear comprises stem, middle part and afterbody, and described sector teeth is arranged on the upper of stem, and middle part is provided with centre hole, and afterbody is relative with stem; Described quadrant gear is set on gear wheel shaft rotationally by the centre hole at middle part; Gear wheel shaft is provided with the first peg, and the afterbody of quadrant gear is provided with the second peg, and one end hook of spring is on the first peg, and other end hook is on the second peg.This technical scheme is conducive to the feasibility improving action of the spring, is conducive to improving positioning precision and stability.
Rotating disk is installed with gear wheel shaft; Described quadrant gear comprises stem, middle part and afterbody, and described sector teeth is arranged on the upper of stem, and middle part is provided with centre hole, and afterbody is relative with stem; Described quadrant gear is set on gear wheel shaft rotationally by the centre hole at middle part; The stem of quadrant gear is provided with the 3rd peg, the afterbody of quadrant gear is provided with the second peg, on 3rd peg of the quadrant gear of one end hook in two adjacent quadrant gears of spring, on the second peg of another quadrant gear of other end hook in two adjacent quadrant gears.This technical scheme is conducive to the feasibility improving action of the spring, is conducive to improving positioning precision and stability.
The stem of described quadrant gear is installed with roller shaft, and roller is set on roller shaft rotationally.
Described spring is extension spring.
The utility model positioning precision is high, runs flat; Adopt elasticity pretension element with gap during elimination action, thus effectively improve positioning precision, machine is run more steady; The fan tooth wiper cam registration device of labelling machine, uniformly on face cam is provided with multiple fan tooth, and it joins end to end under the effect of extension spring, and spring keeps certain predetermincd tension; Fan tooth of the present utility model swings around fan gear axle, and drive the bottle on bottle supporting device to realize the rotation of special angle, the angle of rotation is determined by the geometrical curve of the cam rail on face cam; Roller, under the effect of elasticity pretension element, is close to cam rail always, reduces and even eliminates gap, improve positioning precision, runs more steady, substantially increases the service life of roller.
Accompanying drawing explanation
Fig. 1 shows schematic perspective view of the present utility model;
Fig. 2 shows perspective exploded view of the present utility model;
Fig. 3 shows the perspective exploded view of swinging gear of the present utility model;
Fig. 4 shows the schematic perspective view to hide rotating disk and bottle supporting device on the basis of Fig. 1 after, and wherein, spring is hung between rotating disk and quadrant gear;
Fig. 5 shows the birds-eye view on the basis of Fig. 4;
Fig. 6 shows the A portion partial enlarged drawing of Fig. 5;
Fig. 7 shows the schematic perspective view of two swinging gear of the present utility model and a bottle supporting device, and wherein, spring is hung between rotating disk and quadrant gear;
Fig. 8 shows the schematic perspective view of another angle of two swinging gear of the present utility model and a bottle supporting device, and wherein, spring is hung between rotating disk and quadrant gear;
Fig. 9 shows the schematic perspective view to hide rotating disk and bottle supporting device on the basis of Fig. 1 after, and wherein, spring is hung between two adjacent quadrant gears;
Figure 10 shows the birds-eye view on the basis of Fig. 9;
Figure 11 shows the B portion partial enlarged drawing of Figure 10;
Figure 12 shows the schematic perspective view of two swinging gear of the present utility model and a bottle supporting device, and wherein, spring is hung between two adjacent quadrant gears;
Figure 13 shows the schematic perspective view of another angle of two swinging gear of the present utility model and a bottle supporting device, wherein, between adjacent two quadrant gears that spring is hung on.
Detailed description of the invention:
As shown in figure 1 to figure 13, the cam positioning apparatus of labelling machine, comprise rotating disk 1, face cam 2, can the bottle supporting device 3 of support bottle and swinging gear, bottle supporting device 3 is rotatably installed on rotating disk 1, swinging gear orders about bottle supporting device 3 and swings, face cam 2 is provided with the cam rail 21 of specific curves, swinging gear comprises quadrant gear 4 and roller 5, quadrant gear 4 is rotatably installed on rotating disk 1, roller 5 is rotatably installed on quadrant gear 4, and roller 5 runs along cam rail 21, bottle supporting device 3 is provided with the miniature gears 31 engaged with quadrant gear 4, described swinging gear is provided with the elasticity pretension element making roller 5 be close to cam rail 21 all the time.Elasticity pretension element can keep certain predetermincd tension to make roller 5 be close to cam rail 21 all the time.In rotating disk 1 opposing cam dish 2 rotation process, the roller 5 of swinging gear will run along cam rail 21, and quadrant gear 4 is swung and orders about bottle supporting device 3 to swing.
The quantity of bottle supporting device 3 is multiple, and the rotate axis of dish 1 of multiple bottle supporting device 3 is the distribution of circumference in equal parts shape, and each bottle supporting device 3 is furnished with a swinging gear.
Described elasticity pretension element is spring 6.
Rotating disk 1 is installed with gear wheel shaft 11;
Described quadrant gear 4 comprises stem 41, middle part 42 and afterbody 43, and the tooth of described quadrant gear 4 is arranged on the upper of stem 41, and middle part 42 is provided with centre hole 44, and afterbody 43 is relative with stem 41;
Described quadrant gear 4 is set on gear wheel shaft 11 by the centre hole 44 at middle part rotationally;
The stem 41 of described quadrant gear is installed with roller shaft 45, and roller 5 is set on roller shaft 45 rotationally.
In the utility model, described spring 6 is preferably extension spring.Certainly, spring described in the present embodiment also can be the spring (such as Compress Spring) of other type, as long as this spring can provide predetermincd tension.
Bottle supporting device 3 described in the utility model can adopt as disclosed bottle body positioning devices such as Chinese invention patent application Publication Specification CN102849285A and CN104192387A.
The set-up mode of spring of the present utility model can be, but not limited to adopt the following two kinds scheme:
Scheme one:
As shown in Fig. 4 to Fig. 8, described spring 6 is hung between rotating disk 1 and quadrant gear 4.
Gear wheel shaft 11 is provided with the first peg 12, and the afterbody 43 of quadrant gear is provided with the second peg 46, and one end hook of spring 6 is on the first peg 12, and other end hook is on the second peg 46.Because gear wheel shaft 11 fixes on the turntable 1, namely spring 6 is actually and is hung between rotating disk 1 and quadrant gear 4.
Scheme two:
As shown in Fig. 9 to Figure 13, described spring 6 is hung between two adjacent quadrant gears 4.
The stem 41 of each quadrant gear is provided with the 3rd peg 47, the afterbody 43 of each quadrant gear is provided with the second peg 46, on 3rd peg 47 of the quadrant gear of one end hook in two adjacent quadrant gears of spring 6, on second peg 46 of another quadrant gear of other end hook in two adjacent quadrant gears, joined end to end by multiple spring 6 to realize multiple quadrant gear 4.