JPS6233952B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in a decoration device for applying printing or the like to the outer periphery of a cylindrical article.

As a machine that applies decorations such as painting or printing to the outer periphery of cylindrical articles such as cylindrical cases, a plurality of mandrels are placed on a disk called a mandrel wheel at equal intervals on a circle centered on the axis of the mandrel wheel. The cylindrical articles are fitted onto the mandrel, and as the mandrel wheel rotates, the cylindrical articles are conveyed along a predetermined annular path. A decoration machine is used to decorate the outer periphery of a cylindrical article by applying decoration such as painting or printing to the outer periphery of the cylindrical article by bringing it into rolling contact with a cylinder of a decoration applying device coated with a coating material.

The machine for decorating the outer periphery of a cylindrical article pushes the cylindrical article supplied from the carrying device into the mandrel, takes out the cylindrical article after decoration from the mandrel, and transports the cylindrical article to an oven for drying. The apparatus includes a transfer device for transferring to a transfer chain, etc., and the above-mentioned transfer chain.

There are several types of the above-mentioned transfer devices, but one of them, as shown in Japanese Patent Publication No. 44-6436, is that a push rod is placed on the front surface of each mandrel in alignment with the axis of the mandrel. An undecorated cylindrical article can be produced by arranging connected suction cups, holding the push rod by a member that rotates in synchronization with the mandrel wheel, and providing axial back and forth reciprocation of the push rod and suction action of the suction cup. is pushed toward the mandrel and fitted onto the mandrel, and the decorated cylindrical article is attracted to the suction cup by the suction action, extracted from the mandrel, and transferred to a pin fixed to a conveying chain and positioned on an extension of the mandrel. There is a type of transfer device that transfers such a cylindrical article. This type of transfer device includes a suction cup, a push rod, and a link mechanism for advancing and retreating, one end of which is fixed to the push rod, in order to move the suction cup forward and backward with respect to the mandrel or the pin, and one link of this mechanism. It is equipped with a back-and-forth reciprocating mechanism consisting of a swinging cam mechanism, and since these rotate in synchronization with the mandrel wheel, it has excellent ability to follow decorative machines operating at high speeds.

In the combination of the decoration machine and the transfer device as described above, in the conventional decoration machine, as shown in FIG. A conveyance chain 4 is provided, and in the polymerization section Z, as shown in FIG. 2 when the section is viewed from the side, the cylindrical article 1 is sucked from the suction cup 7 by the mandrel and the retracted suction cup. It is configured to be transferred to a pin of a conveyance chain that travels between the cylindrical article and the article. Therefore, in the conventional transfer device in which the suction cup 7 is arranged in alignment with the mandrel 3, the locus of the conveying chain 4 overlaps with the locus of the mandrel 3 at the overlapping section Z, and therefore, as shown in FIG. The conveying chain 4 is arranged such that the pin 4' of the conveying chain 4 is located between the mandrel 3 and the cylindrical article 1 attracted to the retracted suction cup.

Therefore, in the above-mentioned conventional decoration device, the stroke of the push rod's advancement and retreat is large, which is a problem that must be solved in order to make the machine smaller and faster.

The object of the present invention is to provide a decorative device which eliminates these problems and drawbacks, and has one end extending in a direction perpendicular to the push rod and having one end at the end of the push rod on the side where the mandrel is located.
and a continuous bar whose other end is fixed to each suction cup, a rotation link mechanism for reciprocally rotating the push rod, and a cam mechanism for rocking the link of the link mechanism, and a cam mechanism for swinging the link of the link mechanism. The engaging member that attaches one end to the push rod is configured to be able to move the push rod forward and backward by the swinging of the link without interfering with the reciprocating rotation of the push rod, and the engaging member that attaches one end of the rotation link mechanism to the push rod The configuration is such that the push rod can be rotated by the swinging of the link without interfering with the forward and backward movement of the push rod, and the conveyance chain is arranged so that the pin of the conveyance chain at the point where the cylindrical article is received is located next to the mandrel. ,
A structure is provided in which a suction cup, which has sucked and extracted a decorated cylindrical article from a mandrel, is moved onto a pin of a conveyance chain by rotating a push rod, and the cylindrical article is transferred to the pin.

Hereinafter, a more detailed explanation will be given using a specific example device of the present invention.

3 to 6 show one embodiment of the present invention, FIG. 3 is a schematic front view of the decoration machine of the present invention, and FIG. 4 is a partially detailed side view of the transfer device of the decoration machine of the present invention. 5 shows the A-A arrow view and the B-B arrow view of FIG. B arrow view, Figures 6a and b show the suction cup, which was at the stop position at one end in Figures 5a and b, moved to the stop position at the other end, respectively.
FIG.

Hereinafter, the configuration of a specific example device of the present invention will be explained mainly with reference to FIG.

The transfer device of the present invention, like the conventional device, is provided with a suction cup, a push rod, and a push rod operating mechanism independently for each mandrel. Since the arrangement of the suction cups and the like is the same for all mandrels in this specific example apparatus, FIG. 4 shows the arrangement of the suction cups and the like for one mandrel.

In the figure, 1 is a cylindrical case (hereinafter abbreviated as the casing) which is a cylindrical article, 2 is a mandrel wheel that is driven and rotated by a rotating shaft integrated with the rotating shaft 10 described later, and 3 is a support base 3'. A mandrel 4 is installed to allow the mandrel wheel 2 to make a predetermined movement in parallel along a predetermined path in the direction of the wheel axis; In order to prevent the case 1 from falling during transportation, the entire chain is arranged obliquely so that the tips of the pins 4' are directed diagonally upward.

Reference numeral 10 denotes a rotating shaft of the transfer device, which is formed integrally with the rotating shaft of the mandrel wheel 2. Reference numeral 11 denotes a front wheel which is a holding member for holding one end side portion of the push rod, which will be described later, and is fixed to the rotating shaft 10 with a boss portion 11'.
The peripheral part of 1 corresponds to all mandrels 3,
A support portion 11a having an opening with a circular cross section for supporting a push rod is formed at a position eccentric to the axis of the corresponding mandrel 3. Reference numeral 12 denotes a rear wheel which is a holding member for holding the other end side portion of the push rod, and a boss portion 1 is attached to the rotating shaft 10.
2', and on the peripheral edge of the wheel 12, at positions facing each of the support parts 11a formed on the front wheel 11, there is a support part 12 having an opening with a circular cross section for supporting a push rod.
a is formed.

Reference numeral 13 denotes a pocket mounting member fixedly arranged on the front surface of the front wheel 11, and a pocket 13a in which the housing 1 can be placed is fixedly provided in the member 13 in correspondence with each mandrel. 14 is a cover member fixedly arranged on the rear surface of the rear wheel 12.

15 is a cam plate 1 that rotates the push rod back and forth.
6, which is loosely engaged with the rotating shaft 10 and held stationary relative to the transfer device base (not shown). 17 is a cam plate 1 of a cam mechanism that moves the push rod forward and backward.
The cam mounting member 8 is loosely engaged with the rotating shaft 10 and is held stationary relative to the transfer device base (not shown).

7 is a suction cup, 8 is a push rod, and the continuous bar 9 extends in a direction perpendicular to the push rod 8, and has one end fixed to the end of the push rod 8 on the side where the mandrel is located, and the other end fixed to the suction cup 7. The suction cup 7 and the push rod 8 are connected in a crank shape, and the suction port opening in the suction cup 7 communicates with a conduit portion bored in the lever and the push rod, and is connected to a negative pressure source (not shown) from the end of the conduit portion of the push rod. It's communicating. The push rod 8 is supported by a support portion 11a formed on the front wheel 11 and a support portion 12a formed on the rear wheel 12, and is connected to a link mechanism for reciprocating the push rod back and forth or advancing and retracting, which will be described in detail below. It is connected to a push rod reciprocating mechanism consisting of a push rod advancing and retracting mechanism consisting of a cam mechanism that swings the link of the link mechanism, and a push rod reciprocating mechanism consisting of a link mechanism for rotating the push rod and a cam mechanism that swings the link of the link mechanism.

The push rod back and forth reciprocating mechanism and the reciprocating rotation mechanism will be described in detail below.

Reference numeral 20 denotes an engaging member that is a part of the link mechanism of the push rod advancing and retracting mechanism and is attached to the push rod. In other words, it is locked so that it can rotate around the push rod and cannot move in its axial direction. The engaging member 20 is rotatably connected to one end of one link 21 of the link mechanism, and the other end of the link 21 is connected to a projection formed on the rear surface of the boss portion 11' flange of the front wheel 11. The stroke lever 22 is rotatably connected to the other end of the stroke lever 22 whose one end is rotatably engaged with the portion 11'', and the stroke lever 22 is rotatably connected to one end of a link 23 at the intermediate portion of the lever. The other end of the link 23 is connected to
A holder member 25 is fixed to a slide shaft 24 that is supported by guide holes provided in the front wheel 11 and the cover member 14 and can move forward and backward.
The slide shaft 24 is rotatably connected to the slide shaft 24.
is equipped with cam followers 26, 26 which are rotatable while sandwiching the cam plate 18 constituting the cam mechanism of the push rod advancing/retracting mechanism.

Therefore, when the front wheel 11 and the rear wheel 12 rotate in synchronization with the mandrel wheel 2,
The cam follower 2 follows the stationary cam 18.
6 and 26 also rotate while rotating, and at a predetermined position, the slide shaft 24 is moved back and forth by the cam 18. As the slide shaft moves back and forth, the stroke lever 22 swings, and the push rod 8
and the suction cup 7 connected thereto moves back and forth.

Next, reference numeral 30 denotes a lever member constituting a part of the link mechanism of the push rod reciprocating mechanism, which has a cylindrical part or an engaging member 30' perpendicular to this lever member at one end, and the cylindrical part of the lever member 30' is rotatably fitted into the opening of the support portion 11a of the front wheel 11, and the push rod 8 passes through the opening of the lever member 30. and,
The spline shaft portion 8' of the push rod 8 is connected to the lever member 30 via a plain bush 31 that is locked to the lever member 30 by a key 39 so as to restrict the rotational movement of the push rod 8 and not restrict its forward and backward reciprocating movement.
It is engaged to be able to slide back and forth. The lever portion 30'' of the lever member 30 is rotatably connected to one end of a link 32, and the other end of the link 32 is rotatably connected to one end of a lever 33.
The other end is locked to one end of a shaft 34 rotatably supported by the pocket attachment member 13 and the front wheel 11, and one end of a lever 35 is locked to the other end of the shaft 34. The other end of the lever 35 is provided with a cam follower 36 that is rotatable in contact with the cam plate 16, and further includes a cam follower 36 that is rotatable in contact with the cam plate 16.
At the point of connection between the lever 33 and the continuous member 37'
The compression spring 3 guided by the guide rod 37 is connected together through the guide rod 37.
8 always presses the link 32 upward as shown in FIG. 4, so that the cam follower 36 can follow the cam plate 16.

Therefore, when the front wheel 11 and the rear wheel 12 rotate in synchronization with the mandrel wheel 2,
The cam follower 36 also rotates while following the stationary cam plate 16, and the cam 1 is rotated at a predetermined position.
6 causes the shaft 34 to rotate, and the rotation of the shaft 34 causes the lever member 30 to rotate. is rotated, suction cup 7
oscillates with the push rod 8 as a fulcrum.

5b and 6b, reference numeral 39 is a stopper of the lever member 30, which is fixed to the front wheel 11, and as shown in FIG. 6b, the lever member 30 is attached to the stopper 39. In this state, the suction cup 7 is in contact with the mandrel 3 (the sixth one) which is not moving in the axial direction of the mandrel wheel.
Although the mandrel is not shown in the figure, in the figure, the mandrel has moved in the axial direction of the mandrel wheel and is aligned with the housing 1 shown in FIG. 6a. ).

Further, since the push rod 8 and the push rod back and forth reciprocating mechanism and reciprocating rotation mechanism are connected through the engaging member and spline bush as described above, each does not restrict the movement of the other. .

Next, referring mainly to FIG. 3, the transfer operation by the apparatus according to the embodiment of the present invention will be explained.

In addition, in the following explanation, the position of the suction cup and
Only the operation and the positions of the mandrel and the housing will be described, and the mechanism for moving the suction cup back and forth and the mechanism for swinging it will be omitted because they are as described above.

In the figure, 5 is the feed screw, 5' is the star wheel, 6a and 6b are cylinders with paint/ink applied on the circumferential side, X is the trajectory of the mandrel 3, Y is the trajectory of the suction cup 7, and the others are as described above. It is similar to

The housing 1 is placed in the pocket 13a at a certain position by the feed screw 5 and the star wheel 5'. In this position, the mandrel 3 is moved in parallel in the axial direction of the mandrel wheel 2, and is aligned with the housing 1 placed in the pocket 13a (see FIGS. 4 and 6), and the suction cup is aligned with the housing 1 placed in the pocket 13a. 7 longitudinal position (push rod axial position)
is at the retraction limit behind the housing 1, and the swing position is at the 6th
As shown in the figure, the lever member 30 is in a stop position at one end of its swing limit, where it abuts against the stopper. The mandrel 3 continues to move parallel to the axis of the mandrel wheel until it reaches the position, and the housing 1 placed in the pocket 13a at the position is moved by the advancement of the suction cup 7 until it reaches the position. It is pushed into the mandrel 3 by a part of the cup surface of the suction cup. After the suction cup 7 finishes pushing, it retreats and returns to its original position.
After passing through the position, the mandrel 3 starts moving in the direction opposite to the axis of the mandrel wheel 2 to expand the radius of the trajectory 3 is consistent). mandrel 3
then moves to the position, and during this time, the housing 1
comes into rolling contact with the cylinders 6a and 6b, and decoration is applied to the outer periphery of the housing. The case 1 fitted on the mandrel 3 is completely pulled out from the mandrel 3 by the suction and retreat of the suction cup 7 while moving from position to position, and is suction-held as it is by the suction cup. Suction cup 7
After passing the position, the mandrel 3 starts swinging and expands the locus radius, and the mandrel 3 moves in the axial direction of the mandrel wheel 2 to reduce the locus radius, and continues to reach the later position. The suction cup 7 reaches a stop position at the other end of its swing limit (see FIG. 5), the locus radius becomes maximum, and it begins to move forward. At this position, the suction cup 7 overlaps the line (two loci) of the conveyance chain 4, and from this position, the casing 1 and the pin 4' of the conveyance chain begin to engage with each other, and as the suction cup 7 further advances, it reaches the position. Complete the transfer and release suction from the suction cup at the same time. The suction cup 7 continues to move forward even after the suction of the casing is released at the position, and begins to move backward almost at the same time as the forward movement ends at the position. move, return to the same position as it was in the position,
Thereafter, the same operation as described above is repeated from the position.

In this specific example, from one position to another, the suction cup, which is at the maximum trajectory radius at each position, is swung so as to reduce the trajectory radius after passing the position. The suction cup 7 overlaps the trajectory of the linear conveyance chain 4 and moves in this section, allowing the decoration machine to move at high speed. Transfer can be carried out reliably even if the

In the above explanation, we focused on one mandrel,
The corresponding movements of the suction cups have been described, but in the above series of operations, the suction cups corresponding to all the mandrels provided on the mandrel wheel continuously perform the same movement at the above positions. Then, the stationary cam plate 1
6, 18 have a cam shape which imparts the above movement to the suction cup in the above position.

As described in detail above, according to the decoration machine of the present invention, by making the suction cup swingable, the conveyor chain is arranged so that the pins of the conveyor chain pass beside the mandrel, as shown in FIG. Since the cylindrical article is transferred from the mandrel to the pins of this conveyance chain, the forward and backward stroke of the mandrel can be shortened, thereby achieving the effect of downsizing the decoration machine, reducing the installation area, and increasing the speed. .

[Brief explanation of the drawing]

FIG. 1 is a schematic front view showing the positional relationship between the locus of the suction cup and the conveyance chain in a conventional transfer device, and FIG. 2 is a partial side view of FIG. 1 illustrating the arrangement of the conveyance chain with respect to the mandrel. 3 to 6 show a specific embodiment of the present invention; FIG. 3 is a schematic front view of a machine and equipment for decorating the outer periphery of a cylindrical article equipped with the transfer device of the present invention; and FIG. FIG. 5 is a partially detailed side view of the invention transfer device, showing the A-A arrow view and the B-B arrow view in FIG.
-B arrow view, Figure 6 a and b are respectively Figure 5 a and b
FIG. 5 is an explanatory diagram corresponding to FIGS. 5a and 5b, showing a state in which the suction cup, which was at the stop position, has been moved to the stop position at the other end; In the figure, 1 is a case (cylindrical article), 2 is a mandrel wheel, 3 is a mandrel, 4 is a conveyance chain, 4' is a pin, 5 is a feed screw, 5' is a star wheel, 6a, 6b are cylinders , 7 is a suction cup, 8 is a push rod, 9 is a connecting bar, 10 is a rotating shaft, 11 is a front wheel, 1
2 is the rear wheel, 13 is the pocket mounting member, 1
3a is a pocket, 14 is a cover member, 15, 17
16 and 18 are cam mounting members, 16 and 18 are cam plates, 20 are engagement members, 21 and 23 are links, 22 are stroke levers, 24 are slide shafts, 25 are holder members, 26 are cam followers, 30 are lever members, and 31 are Spline bushing, 32 is a link,
33 and 35 are levers, 34 is a shaft, 36 is a cam follower, 37 is a guide rod, 37' is a connecting member, 38 is a compression spring, 39 is a key,
is the locus of the mandrel and Y is the locus of the suction cup.

Claims (1)

[Scope of Claims] 1. A mandrel wheel, a plurality of mandrels installed at regular intervals on a circle centered on the axis of the mandrel wheel and parallel to the axis, and the mandrel wheel fitted onto the mandrel. a decoration imparting device disposed adjacent to the path so as to be able to decorate the outer peripheral surface of a cylindrical article conveyed along a predetermined path as the article rotates; the undecorated cylindrical article is pushed forward with the suction cup so that the mandrel is inserted into the undecorated cylindrical article;
In addition, there is also a push rod for moving a suction cup forward and backward relative to the mandrel or the pin in order to adsorb the decorated cylindrical article, extract it from the mandrel, and transfer it to a pin fixed to a conveying chain and extending in a direction parallel to the mandrel. A decoration machine including a transfer device having a link mechanism for forward and backward movement to which a push rod is attached, a cam mechanism for swinging the link of the link mechanism, and a conveyance chain having the pin, which extends in a direction perpendicular to the push rod. At the end of the push rod on the side where the mandrel is,
and a continuous bar whose other end is fixed to each suction cup, a rotation link mechanism for reciprocally rotating the push rod, and a cam mechanism for swinging the link of the link mechanism, and a link mechanism for advancing and retracting. The engaging member that attaches one end to the push rod is configured to allow the push rod to move forward and backward by swinging of the link without interfering with the reciprocating rotation of the push rod, and the engaging member that attaches one end of the rotating link mechanism to the push rod The configuration is such that the push rod can be rotated by the swinging of the link without interfering with the forward and backward movement of the push rod, and the conveyance chain is arranged so that the pin of the conveyance chain at the point where the cylindrical article is received is located next to the mandrel. A cylindrical cylinder characterized in that the suction cup, which has sucked and pulled out the decorated cylindrical article from the mandrel, is moved onto a pin of a conveyance chain by rotating a push rod, and the cylindrical article is transferred to the pin. Decoration machinery for shaped articles.