The objective of the invention is to want to overcome the deficiency of prior art, a kind of flap fold mechanism that can retrofit easily is provided, so that the carboard of isomorphism type is not operated.
The invention provides a kind of being used for the mechanism of article packing in the transportation usefulness machine of container of reeling, this coiling transportation is to be formed by a blank with a pair of flap that can therefrom hit out with container, described machine advances blank and relative article along a predetermined path, described device can is characterized in that described device also comprises towards the above-mentioned a pair of flap of blank folded inside along described path:
A rotary disk that limits pivot center;
A stationary cam plate of arranging and have a ring cam set track that is provided with around described axis near described rotary disk;
Make the synchronized movement of above-mentioned rotary disk and above-mentioned blank and article and around the driver train of above-mentioned rotational;
The finger of a pair of chimeric blank by above-mentioned rotary disk carrier band, this can wrap to finger that separately first pin is made pivoting action and chimeric with described flap; And
By above-mentioned rotary disk carrier band and described finger is separated from each other and the actuating device of pivoting action toward each other, described actuating device comprises a cam follower that slides in described cam rail, during above-mentioned disk rotates, can do radially inside or outside moving along described disk, described actuating device comprises that also the radial motion that makes described cam follower converts the switching mechanism of the pivoted motion of above-mentioned finger to, make that during the radial motion of described cam follower described a pair of finger can be done to pivot moving around first pin separately simultaneously.
According to characteristics of the present invention, above-mentioned matching mechanism can comprise a cam follower that travels in the annular cam track, and its shape is made and can be produced above-mentioned jackknife action and return action.
According to characteristics of the present invention, above-mentioned matching mechanism can comprise a cam follower that travels in the annular cam track, and its shape is made and can be produced above-mentioned jackknife action and return action.
According to another characteristics of the present invention, above-mentioned fold mechanism can comprise an above-mentioned folder of combination and the ring-type cam rail, rotary panel assembly.
In the structure that forms panel assembly, this panel assembly can comprise a lobe plate, an intermediate plate and a top board in conjunction with above-mentioned folder vertically in proper order, and wherein intermediate plate and top board can rotate with respect to lobe plate.Best, these plates are disk.
According to another characteristics of the present invention, above-mentioned folder can comprise a main body, and this main body is installed in the above-mentioned intermediate plate to carry out radial motion, the above-mentioned cam follower of this main body carrier band.The terminal of this main body can be a head that comprises pair of pivot formula finger, and this forms the blank telescoping part of above-mentioned folder to finger.Best, these pivoting fingers are subjected to pivoting of while basically, and cooperate to realize its pivotal movement with the parts of above-mentioned intermediate plate.
According to another characteristics of the present invention, aforementioned body can be slidably mounted in the radial track that forms in the intermediate disc.
According to another characteristics of the present invention, above-mentioned panel assembly can comprise many folder of not arranging on the same group that are divided into, thereby provides in every group of folder one independently folder for each chimeric carboard for the treatment of that continues.
With way of example one embodiment of the present of invention are described referring now to accompanying drawing, wherein:
With reference to accompanying drawing, Fig. 1 to 10 schematically illustrates the operation according to the blank fold mechanism 10 of a kind of carboard of the present invention.This mechanism comprises the many groups of folder that can install rotationally, sequentially to cooperatively interact with carton blank, forms two bottle heel retaining holes with each side that is suitable at carboard.Fig. 1-10 is illustrated in the successive phases during rotary panel assembly 36,38 rotates, the a pair of such folder 12 of carrying on the panel assembly 36,38 all is that a pair of flap f1, the f2 by displacement carton blank C opens bottle heel retaining hole A in each case.In this case, this carton blank is convoluted.Then the heel of a pair of bottle B1, B2 is packed in the corresponding retaining hole A.
Figure 11 is a blank fold mechanism 10, and it comprises disk 38, middle disk 36 and following stationary cam plate 34.Disk can drive by the axle that for example is fixed on each disk, and this is by the effect of the rotary axle journal of center of fixing lobe plate.This certainly is connected on the electrical motor by certain suitable mechanical connection form to be drivenly, so as to realize Wheel disc device correctly with packaging process in the synchronized movement rotating speed of carton blank C.Blank fold mechanism 10 in this example comprises three groups four close and equal at interval folder.The number of folder 12 and the carboard type decided of using by connection with wrapping of piece at interval.In this specific examples, the shape of carboard is made 4 * 2 package arrangement, makes will settle four article of a row along each sidewall of carboard.Therefore, because three groups of four pivoting folder are arranged,, Wheel disc device keeps flap with opening three bottle heels in the lasting carton blank so rotating a circle.Carboard C comprises the sidewall of the hole A that heel with the article B that packs into is used and the flap " f " that hits out from the carboard sidewall, and the latter is required outside the height of sidewall plane and opens towards carton interior.
A pair of blank fold mechanism 10 is adapted to be mounted within the vicinity of wrapping machine input end.Two such mechanisms arrange side by side, between these two mechanisms a blank and article delivery path are set.After this explanation is only mentioned this to one in the mechanism, and another mechanism is all similar aspect all.Carton blank forms the article heel retaining hole A of a series of straight lines, they along the sidewall paneling that makes carboard and base plate collapsibly the bonded assembly fold line hit out.Such heel retaining hole for example heel of bottle of can packing into remains on bottle in the carboard of finishing helping.Each heel retaining hole forms by folding enhancing flap f, and the hole is opened, and forms overlapping relation with the sidewall of blank and the neighbouring part of bottom.
One of three groups single folder 12 shown in Figure 11, wherein first and second fingers 14 and 16 illustrate the position that it is opened fully respectively, stretch out in their grooves 40 from disk 36 in this position.Each pivoting folder comprises an elongated bar 26, in the radial track 28 that forms in the disk 36 during this bar is contained in, is used for moving back and forth therein.One of the radial outer end carrier band of bar 26 has a plate 24 of horizontal oval aperture 22.Pivoting finger 14 and 16 has last locating dowel pin 18 and 20 respectively, and they can be contained in the perforate 22 slidably, and each finger has a following locating dowel pin 52, they each all be contained in the groove 50 that forms in the projection 37 of disk 36.These top members are shown in Figure 12 to 14.Can see that from the planar view of Figure 13 the pin 20 center displacements from pin 52 are so that realize the motion of opening of finger 14 and 16 during bar 26 radial motions.Be about 45 ° towards the line of the axis of pin 52 with respect to the angle A that the straight line R ' parallel with the radial edges R of finger 16 faced toward by the axis of pin 20 preferably, warp-wise edge R is near finger 14.
A cam follower (being roller unit 30 under this occasion) is placed under the middle lower surface in bar 26 two ends and in the cam rail 32 that forms in lobe plate 34 and rolls, radial motion along with cam rail 32 cam follower 30, bar 26 radially track 28 radially inwardly and outwards moves, by the effect of reciprocating bar 26, pivoting finger 14 and 16 produces motion.Therefore in each figure of Fig. 1 to 10, schematically illustrate cam rail 32, in each identical figure, produce finger 14 and 16 location thereupon with respect to the position relevant with cam rail 32.Obviously, when reciprocating bar 26 was positioned at it radially outermost limit thereby cam follower 30 arrives the degree of eccentricity largest portion of cam rails 32, the pivoting finger was opened to its at utmost (as shown in Figure 11).
Certainly, Figure 11 illustrates that just each projection 13 of obviously going up disk 38 is provided with radial groove (showing) in its lower surface, thereby be used to hold a plate 24 plate 24 can radially be moved.
Refer again to Fig. 1 to 10, as can be seen, when device for disc 36,38 generations clockwise rotated, carton blanks of first folder, 12 engagements also penetrated a hole A, thereby separately flap f1, f2 make it no longer become coplanar collimation relation with the side plane of carboard.In Fig. 1, folder 12 has turned to the side near carton blank C, and in Fig. 2, further rotation has made folder 12 begin to be penetrated among the heel retaining hole A.
Fig. 3 illustration folder 12 is positioned at the almost completely position of through hole A, makes flap f1, f2 inwardly folding significantly dividually each other, but is no more than 90 ° of positions with respect to carton side.The situation of following order is up to comprising that position shown in Fig. 5 also is so, is appreciated that the pivoting finger of folder 12 is still closed till the position of Fig. 5, even they have penetrated blank.
Pivoting finger 14 and 16 beginnings are separated from each other and pivot in Fig. 6, and thereby further open folding flap f1, f2.
Flap f1, f2 have folded into 90 ° position with respect to relevant carboard sidewall in Fig. 7, and beginning is folding towards the neighbouring part of carboard sidewall.This moment second folder 12 ' begin to penetrate next adjacent hole A ' with flap f3, f4.
Arrived the radially most external part of cam rail 32 in Fig. 8 cam follower 30, thereby reciprocating bar 26 makes a plate 24 arrive its radially outermost position.Therefore, because locating dowel pin 18 of packing in 24 pairs of grooves 22 of a plate and 20 effect, this causes the maximum of pivoting finger 14 and 16 to be opened.
Fig. 9 represents that cam follower 30 causes bar 26 to be return by the radially outermost extent of cam rail 32, thereby makes pivoting finger 14 and 16 beginnings back closed together.
Pivoting finger 14 and 16 is more approaching in Figure 10, thereby finger can be return from hole A.
Therefore, when finger was pivoted to the ragged edge position, finger separately engaged the also tab of folded-out bottle heel retaining hole, and when finger was pivoted in its complete retracted position, finger was just closed together.
During this operating process, see that from scheme drawing 1 to 10 is clear the finger that pivots is in place, the bottom operation of contiguous bottle B1, B2.When the carboard side plate moved inward, the bottle heel embedded in its corresponding heel hole then.This situation be owing to make the carboard egative film realize overlapping relation, and this overlapping relation has the common effect around this group bottle " chucking " carton blank.In this specific example, before the carboard of reeling was organized bottle closure around this, all four adjacent holes all were opened.
Can know from accompanying drawing and to see that the pivoting finger 13,14 of folder has the profile of a bending, so that penetrate hole A better and in the expansion of flap f1, f2, can produce folding gradually effect.Be appreciated that to be easy to change blank fold mechanism 10 of the present invention, so that operate in conjunction with the carboard different with above-mentioned configuration.Therefore only require to the different form of another kind from a kind of carboard formal transformation and remove existing device for disc, change the grouping of another its diameter, pivoting finger and can mate the suitable device for disc of the carboard type of moving on the machine for the rotating speed of number and device.This quite heavy conversion requirement with known mechanisms is opposite, and in these known mechanisms, single adjustment usually need be carried out in the number of pivoting finger and interval on the chain device of ring-type.