JPS6092856A - Bottle turning position setting device and printer - Google Patents

Abstract

PURPOSE:To permit a simple and accurate setting of the turning direction of a bottle and printing at a desired location on an outer surface of a bottle by fitting the bottom of the bottle into a recess of a bottle turning position setting device. CONSTITUTION:When a bottle B is placed on a bottle turning position setting device 1 installed on a turn table 46, a push down piece 51 pushes down the bottle B when said bottle is transferred to the turn table. The bottom of the bottle B is fitted into a recess 8 of the position setting device and is retained by a retainer 14 to set the turning direction of the bottle B. Then, printing is carried out by a printer.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a bottle rotation positioning device for positioning the rotational position of a bottle circumference at a constant position, and a printing device on a bottle outer circumference using this bottle rotation positioning device. More specifically, the rotational positioning of the supplied bottle can be easily, accurately, and automatically achieved by using a locking recess for rotational positioning formed on the bottom of the bottle. The purpose is to

It is common practice to print predetermined characters or patterns on the outer circumferential surface of the body of a bottle, but in this case, if the flat cross-sectional shape of the bottle, or if the bottle is made of synthetic resin, the parting Depending on the positional relationship with the line position and even the positional relationship with the cap that holds the bottle tightly,
There are cases where it is necessary to accurately set the printing position on the outer peripheral surface of the bottle.

As a means used to set the position of printing on the outer peripheral surface of the bottle, a locking recess for positioning is formed in advance on the bottom of the bottle.3 This locking recess is used to position the bottle in the rotational direction. Most commonly achieved.

Conventionally, the positioning of a bottle in the rotational direction using this locking recess has been achieved by placing a supplied bottle on a holder provided with a locking protrusion that can be locked in the locking recess at a preset position. By rotationally displacing the bottle, the locking protrusion is locked in the locking recess to stop the rotational displacement of the bottle, thereby stopping and holding the bottle in a fixed orientation.

In this way, conventional bottle circumferential positioning means
Since the bottle is rotated by applying a direct rotational force to the product bottle, there is no risk of damaging the bottle due to the large mechanical impact force when the locking protrusion locks into the locking recess and stops. When the locking protrusion locks into the locking recess, 1
In fact, there is uncertainty in operation due to the fact that the rotation of the bottle does not always stop, and furthermore, since a dedicated device is required to rotate the bottle, this device is installed in a specific location, so the bottle It is necessary to position the bottle at a specific position, which causes dissatisfaction and inconvenience such as the bottle being moved intermittently, which not only takes time for positioning but also makes the device complicated and large. there were.

The present invention was devised to eliminate the drawbacks and inconveniences of the conventional examples described above, and the present invention provides rotational driving force to the bottle not to act directly on the bottle, but to the part that holds the bottom of the bottle. A bottle rotation positioning device is constructed by providing a clutch that slips when a predetermined force or more is applied between this portion and the portion directly receiving the rotational force. A printing device for printing on the outer peripheral surface of a bottle is configured to rotate the held bottle one revolution or more while continuously rotating at a constant speed, and then print at a predetermined location on the outer peripheral surface of the held bottle.

Two embodiments of the present invention will be described below with reference to the drawings.

The bottle rotation positioning device 1 according to the present invention includes a linear cylindrical fixed cylinder 9 that is immovably fixed in an upright manner, and is assembled into the fixed cylinder 9 so that it cannot be rotated but can be moved up and down. , a state in which the lower end of the fixed cylindrical body 9 protrudes from the lower end, and a locking piece 14 that locks the upper end in a locking recess Bl formed on the bottom surface of the bottle B is protruded upward from the fixed cylindrical body 9. and a fitting recess 8 which is attached to the fixed cylinder 9 so as to be rotatable but not movable up and down, and into which the lower end of the bottle B can be fitted.
It consists of a case cylindrical body 2 formed with a 13 is provided with a spring 15 that constantly applies a pushing force.

The fixed cylinder 9 is a bottle rotation positioning device 1 according to the present invention.
The base part of the bottle is firmly fixed to the stationary part by suitable means, and provides a base for the mounting of the other components of the bottle rotation positioning device l.

A locking piece 14 fixed to the upper end of the elevating column 13 assembled in the fixed cylinder 9 has its upper end.

It is attached so as to protrude from below into a fitting recess 8 formed on the upper surface of the case cylindrical body 2, so that its upper end can be pressed against the bottom surface of the bottle B that is fitted into the fitting recess 8. It has become.

This locking piece 14 presses its upper end against the bottom of the bottle B assembled in the fitting recess 8 with a pressing force according to the elasticity of the spring 15. With respect to the center of the bottom surface of the bottle B, its position is set so that it abuts on the imaginary circumference where the locking recess B1 formed on the bottom surface is located.

Therefore, the lifting column 13. That is, when the bottle B is rotationally displaced with respect to the locking piece 14, the upper end of the locking piece 14 will surely be locked in the locking recess B1 of the bottle B within one rotation of the bottle B.

At the lower end of the elevating column 13 protruding from the lower end of the fixed cylinder 9, in the case of the illustrated embodiment, a detection block 21 made of a soft magnetic material is provided.
is attached so that it can constitute a part that detects that the bottle B is set in the bottle rotation positioning device 1.

Case cylindrical body 2 is assembled to the outside of fixed cylindrical body 9 and is rotatable by bearings 11 and 12 with fixed cylindrical body 9 as a rotating shaft, but cannot be moved up and down. Case cylindrical body 2 provides a portion for receiving bottle B. A receiving piece 7 having a fitting recess 8 formed on its upper surface is fixed to the upper end of a bicylindrical main body portion.

In the case of the illustrated embodiment, this receiving piece 7 is ring-shaped and has a hole formed in its center.

In order to smoothly assemble the bottom of the bottle B into the fitting recess 8, a first presser piece 16 and a second presser piece 1 are provided.
7 are assembled so that they can be moved up and down.

The first holding piece 16 is attached to the case cylindrical body 2 so as to be able to move up and down while being constantly pushed up by a spring 18, and the second holding piece 17 is always pushed up by a spring 19. It is assembled to the fixed cylindrical body 9 so as to be movable up and down in the received state. .

In addition, the pulley 3 attached to the case cylinder 2 via the clutch plate 4 is a part that receives rotational force, which is an external force on the case cylinder 2. The assembly is fixed via two clutch plates 4.4 between two fixed spacers 5.5.

The other end of a spring 20 whose one end is in elastic contact with a set screw 6 fixed to the case cylinder 2 is in elastic contact with one of the spacers 5 that fixes the assembly of the pulley 3, and the two clutch plates By holding the pulley 3 between the clutch plates 4 and 4 with a force according to the elasticity of the spring 20, the clutch plate 4 and the boot'
A desired frictional resistance force is exerted between it and J3.

That is, the rotational force transmitted to the case cylinder 2 via the pulley 3 is as follows when the resistance force of the case cylinder 2 against nine rotations is larger than the frictional resistance between the clutch plate 4 and the pulley 3. , the pulley 3 merely rotates idly relative to the case cylinder body 2, and no transmission occurs to the case cylinder body 2.

Since the bottle rotation positioning device 1 according to the present invention has the above-described structure, the bottom of the bottle B is fitted into the fitting recess 8 by pressing down the two holding pieces 16 and 17. The assembly into the bottle rotation positioning device 1 is achieved.

When the bottle B is assembled, the locking piece 14, that is, the elevating column 13 is displaced downward against the elasticity of the splicing pin 15, but the upper end of the locking piece 14 is in the locking recess B of the bottle B.
1, the amount of downward displacement of the locking piece 14 is greater than the depth of the four locking parts B1 than when the upper end of the locking piece 14 is not locked in the locking recess B1 of the bottle B. becomes smaller by that amount.

Therefore, by using the detection block 21 provided at the lower end of the lifting column 13, it is possible to know whether the bottle B has been correctly assembled to the bottle rotation positioning device 1 based on the difference in the amount of downward displacement described above. I can do it.

In addition, when the bottle B is assembled and rotational force is transmitted to the case cylinder 2 via the pulley 3, the bottle B can rotate together with the case cylinder 2, but the locking piece 14 does not rotate.

Therefore, if the upper end of the locking piece 14 is locked in the locking recess B1, even if rotational force is transmitted to the pulley 3, the bottle B cannot rotate, and the pulley 3 The clutch plate 4 rotates idly with respect to the case cylinder body 2.

On the other hand, when the upper end of the locking piece 14 is not locked in the locking recess B1, the bottle B is held so that the locking piece 14 is not locked in the locking recess B1.
The case rotates together with the pulley 3 and the case cylinder 2 until it is locked.

In this way, the bottle B assembled in the bottle rotation positioning device 1 is fixed at a rotational position where its locking recess B1 is locked to the locking piece 14 by applying rotational force to the pulley 3. Therefore, by setting the rotational direction position of the locking piece 14 at a predetermined position, the rotational posture of the bottle B can be set constant.

Next, a printing device for printing on the outer peripheral surface of a bottle B using this bottle rotation positioning device 1 will be described.

In this apparatus for printing on the outer peripheral surface of a bottle, the above-described bottle rotation positioning device l is assembled and fixed at regular intervals on the peripheral edge of a rotary table 46 that continuously rotates at a constant speed, and is mounted above the rotary table 46. A holding table 31 is provided to maintain the posture of the bottle B supplied to the bottle rotation positioning device 1, and a pusher is provided directly above each bottle rotation positioning device 1 to apply a downward force to the supplied bottle B. Lowering piece 51
established.

Further, in the vicinity of the rotary table 46, this rotary table 4
The pulley 3 of this bottle rotation positioning device 1 is moved along the movement trajectory of the bottle rotation positioning device 1 accompanying the rotational movement of
A bottle spin device 32 that rotates the bottle B held in the bottle rotation positioning device 1 by at least one revolution by contacting the drive belt 33 with the It is configured by sequentially arranging a printing printer 38 that performs printing.

That is, this printing device on the outer peripheral surface of the bottle.

Bottle rotation positioning devices 1 are arranged and fixed on the circumferential edge of the rotary table 46 at every five equal intervals, and bottles B, which are being sequentially supplied, are positioned on the bottle rotation positioning devices 1 in an upright posture. By applying a downward force to the bottle B held in this upright position, the bottom of the bottle B is fitted into the fitting recess 8 of the bottle rotation positioning device 1, and in this state, the bottle is rotated by the bottle spin device 32. The bottle rotation positioning device 1 is driven to rotate to position the bottle B in the circumferential direction using the function of the bottle rotation positioning device 1 described above. -38 to print desired characters and patterns.

In the illustrated embodiment, the one-turn table 46 has a base plate 27
The assembly fixed above is rotatably attached to the upper end of the column 47, and this assembly is continuously rotated in a constant direction at a constant speed by a drive device (not shown) on the column 45. .

A mounting table 48 is fixed on the rotary table 46 via a suitable spacer block 47°, and a column 49 for mounting the push-down piece 51 is mounted on the table 48. Two upper and lower holding tables 31 are attached.

Each bottle rotating positioning device 1 is fixed to the peripheral end of the rotating table 46 by attaching the lower end of the fixed cylinder 9 of the bottle rotating positioning device 1 protruding from inside the case cylinder 2 to the rotating table 46 using the fixing piece 10. Furthermore, the ring 22 is fixed to the peripheral edge of the table 48, and the case cylindrical body of the bottle rotation positioning device 1 is mounted inside the ring 22 via a bearing 23. By rotatably fitting and assembling the upper end of 2,
The assembly of the bottle rotation positioning device 1 to the rotary table 46 makes the fixation more stable.

The push-down piece 51 is assembled and fixed to the columnar body 49 described above, and rotates within a preset rotation range by the action of a cam mechanism (not shown). A pressing force is applied to the bottle B to cause the bottle rotation positioning device 1 to position the bottle B in the circumferential direction.

The two upper and lower holding tables 31 are for reliably holding the bottle B supplied on the bottle rotation positioning device 1 in an upright position on the bottle rotation positioning device 1, and are mounted on the table 48. For assembling a plurality of erected membranes, use the column pieces 50.
The assembly is fixed on the table 48 by this method.

The bottle spin device 32 is constructed by passing an endless drive belt 33 around a drive boob IJ34, which is rotationally driven by a drive source (not shown), a tension pulley 35, and a guide boob IJ36. The pulley 3 of the bottle rotation positioning device 1, which rotates according to the rotation of the rotation table 46, presses its peripheral surface against the drive belt 33 due to its rotation, thereby causing the drive belt 33 that is being driven to run. 33 rotates the boolean IJ 3 and causes the bottle rotating positioning device 1 to perform a predetermined operation.

The printing device for printing on the outer peripheral surface of a bottle using the bottle rotation positioning device 1 has the above-mentioned structure.
FIG. 1 shows an example of how this apparatus for printing on the outer peripheral surface of a bottle is used.

In FIG. 1, 24 is a conveyance table, and on this conveyance table 24, along the conveyance direction, there are guide rails 26 for maintaining the upright posture of the bottle B during conveyance.
is provided, and the bottles B are transported at a transport speed synchronized with the rotational speed of the rotary table 46 and at intervals corresponding to the intervals between the respective bottle rotation positioning devices W1 attached to the peripheral edge of the rotary table 46. A timing screw 25 is provided.

A guide plate 28 is provided at the conveying end of the timing screw 25.
The guide plate 28 has a guide surface 28a for moving the bottle B, which has been generally fed by the timing screw 25, together with the star wheel 29 for feeding. is provided,
Further, a holding recess 29a for holding the bottle B is formed at the peripheral end of the feeding star wheel 29, which rotates at the same circumferential speed as the feeding speed of the bottle B111 of the timing screw 25. The loaded bottles B are placed on each bottle rotating positioning device I attached to the 9-turn table 46 by the feeding star wheel 29.
It is designed to feed 1 MM while being guided by the first guide piece 30.

Further, a second guide surface 28b is formed on the opposite side of the guide plate 28 from the side on which the first guide surface 28a is provided, and a peripheral surface of the second guide surface 28b is formed on the second guide surface 28b. A holding recess formed at the peripheral end of the feeding star wheel 39 is provided with the feeding star wheel 39 facing each other, and the feeding star wheel 39 is set to have the same circumferential speed as the revolution speed of each bottle rotation positioning device I. At 39a, the bottle B is received from the bottle rotation positioning device 1, and the bottle B is transferred directly to the second bottle.
It is designed to be carried out along the guide surface 28b.

At the starting end of the discharge path formed on the conveyance table 24 by a pair of discharge guide rails 45, bottles B that could not be printed well are placed on the discharge guide rails 45.
The rocking shaft 4 is configured such that the defective product discharge gate 4o for discharging to a portion other than the discharge path formed by the discharge guide rail 45 can be rotated in the direction of closing the discharge path of the discharge guide rail 45.
2, it is rotatably attached.

In the illustrated embodiment, the opening and closing of the discharge path of the discharge guide rail 45 by the defective product discharge boo 1-40 is performed by the cylinder 41.
It is configured to be achieved by

A defective product table 44 is disposed near the dispensing star wheel 39, and in combination with a defective product ejection boot 40, the bottle B is held in the holding recess 39a of the dispensing star wheel 39. When a defective bottle B is generated due to the action of the second guide piece 42 and the guide wall 44a that guides the bottle B held in the holding recess 39a of the feeding star wheel 39 onto the defective product table 44. for.

This defective bottle B can be carried out to a defective product table 44.

In the example shown in FIG. 1, a defective bottle B means a bottle on which the printing was not performed well, and the criterion for determining a defective bottle B is that the bottle B is rotated. The determination is made based on whether or not the object is accurately positioned and held by the positioning device 1.

Therefore, in the case of the second illustrated embodiment, the detection block 2 provided at the lower end of the lifting column 13 of the bottle rotation positioning device 1
A base plate 27 is made of a soft magnetic material and is located directly below the detection block 21 on the downstream side of the bottle spin device 32 along the rotation direction of the rotary table 46.
Detection switch 3, such as a proximity switch that uses magnetism at a location
7 (see Figure 2) is provided, and this detection switch 37
The occurrence of defective products is determined by turning on and off the switch.

In other words, in the case of the illustrated embodiment, in the bottle rotation positioning device 1, the positioning of the bottle B in the circumferential direction is performed using the locking piece 1.
4 is achieved by locking in the locking recess B1 of the bottle B, the locking piece 14 locks in the locking recess B1 and positioning of the bottle B in the circumferential direction is achieved; In the state where the locking piece 14 cannot be locked in the locking recess Bl and the positioning of the bottle B in the circumferential direction cannot be achieved, the distance between the detection block 21 and the detection switch 37 when they face each other is as follows.

The difference will be the depth of the locking recess B1, so
Due to this difference in interval, the detection switch 37 outputs a detection signal when the locking piece 14 is not locked in the locking recess B1 and positioning is not achieved.

Next, an example of the operation of the usage example shown in FIG. 1 will be explained.

While being guided by the guide rail 26 on the transport table 24, the timing screw 25 moves Il! The fed bottle B engages with the holding recess 29a of the feeding star wheel 29, which is set at a rotational speed synchronized with the conveying speed of the timing screw 25, and also engages with the holding recess 29a of the feeding star wheel 29.
This guide plate 2 is regulated by the first guide surface 28a of
It is conveyed toward the rotary table 46 by the feed-in star wheel 29 along the first guide surface 28a of No.8.

When the bottle B is positioned on the bottle rotation positioning device 1 attached to the rotary table 46, the bottle B is transferred from the loading star wheel 29 side to the rotary table 46 side by the first guide piece 30. At the same time, the push-down pieces 51 provided corresponding to each bottle rotation positioning device l
Bottle B is pushed down by the action of a cam, etc. (not shown),
The bottom of the bottle B is fitted into the fitting recess 8 of the bottle rotation positioning device 1, and the bottle B is placed in the bottle rotation positioning device 1.
Achieve assembly to.

In this state, the bottle B assembled to the bottle rotation positioning device 1 is positioned within the holding recesses 31a of the two upper and lower holding tables 31, so that the bottle B can be rotated and positioned in an extremely stable state. The assembly in the device 1 will be maintained.

The pressing force of the pressing piece 51 pushes the first and second pressing pieces 16 against the elasticity of the springs 18 and 19.
．． 17 to fit the bottom of the bottle B into the fitting recess 8, and while the bottle B is assembled to the bottle rotation positioning device 1, the rotation table 46 continues to rotate and the bottle is placed in the bottle spin device 32. When B is in the opposing position, the drive belt 33 of the bottle spin device 32 is moved to the bottle rotation positioning device l.
Since the bottle B is pressed against the boo I73, the bottle B is rotated together with the bottle rotation positioning device 10 and the case cylinder 2.

This rotation of the bottle B continues until the locking piece 14 engages with the locking recess Ill of the bottle B, but the locking piece 14 and the locking recess Ill are always in contact with each other during one rotation of the bottle B. Since they face each other once, the rotation of the bottle B by the bottle spin device 32 may be about one rotation.

In this way, the bottle B is rotated by the bottle spin device 32, and the locking piece 14 engages with the locking recess B1, whereby positioning of the bottle B in the circumferential direction is achieved.

When positioning the bottle B in the circumferential direction each time the locking piece 14 engages with the locking recess B1, the engagement between the locking piece 14 and the locking recess B1 is achieved before the bottle B rotates once. Generally, the rotational force is transmitted from the bottle spin device 32 to the pulley 3 even though the locking piece 14 and the locking recess Bl are engaged. However, in such a state, slippage occurs between the clutch plate 4 and the boot 73 and the case cylinder body 2.

Since the boo IJ 3 idles, the bottle B is not rotationally displaced and is held at a predetermined constant position in the circumferential direction.

The bottle rotation positioning device 1 rotates the bottle B to achieve positioning in two circumferential directions using the bottle spin device 32.
7, and whether or not the circumferential alignment of the bottle B has been achieved is detected based on whether or not the locking piece 14 is correctly engaged with the locking recess B1.

1 after the detection of circumferential positioning of bottle B is completed.
Predetermined characters or patterns can be printed by the printing printer 38 only on bottles B whose circumferential alignment is correct, thereby making it possible to print at a constant circumferential position on the circumferential surface of the bottle B.

Regardless of whether the bottle B supplied to the bottle rotation positioning device 1 has been positioned in the 9-circumferential direction or not, the bottle B is moved to the second position on the guide plate 28 after passing the printing position by the printing printer 38. According to the guide surface 28b, the feeding star wheel 39 is moved from the bottle rotation positioning device l.
The normal bottles B are transferred to the holding section 39a of the cylinder 41, and are transferred onto the transfer table 24 by the feeding star wheel 39, and the normal bottles B are ejected along the pair of ejection guide rails 45. The defective product discharge gate 40 and the second guide piece 43, which have been moved to the operating position by the operation, are further guided by the guide wall 44a and discharged onto the defective product table 44.

Note that when the bottle B moves from the bottle rotation positioning device 1 to the feeding star wheel 39 side, the holding recess 39a of the feeding star wheel 39 is close to the bottle B held by the bottle rotation positioning device 1. At this point, the holding force of the bottle B on the bottle B by the bottle rotation positioning device 1 is released by moving the push-down piece 51 upward.

As described above, the bottle rotation positioning device 1 according to the present invention can achieve circumferential positioning of the bottle B by simply applying a rotational force to the boot IJ 3, and can also align the bottle B in the circumferential direction between the boot IJ 3 and the case cylindrical body 2. Since the clutch plate 4 is interposed between the bottle B and the bottle B, excessive rotational force is not transmitted to the bottle B, and the positioning of the bottle B in the circumferential direction can be safely achieved.

Further, whether or not circumferential positioning of the bottle B has been achieved can be determined simply by knowing the vertical displacement position of the lifting column 13, and the lower end of this lifting column 13 is connected to the bottle rotation positioning device Wll. Since it is located in an outwardly protruding position, it is easy to know the vertical displacement position of the vertical column 13.
Judgment of the circumferential positioning of the bottle B can be achieved accurately and easily.

Furthermore, the apparatus for printing on the outer circumferential surface of a bottle configured using the bottle rotation positioning device W1 has a simple structure as a whole, and its operation is also simple, so that it is easy to operate.

As is clear from the above description, the bottle rotational positioning device according to the present invention and the marking device 11 on the outer peripheral surface of the bottle using this bottle rotational positioning device have a simple structure and are therefore easy to implement. Furthermore, since the positioning operation and the operations in each step are simple, the operation can be controlled easily and accurately, and furthermore, no unreasonable force is applied to the bottle being handled.

Even when the bottle is not mechanically strong, such as when the bottle is made of synthetic rattan, it has the excellent effect of achieving safe alignment and printing.

[Brief explanation of drawings]

FIG. 1 is a plan view showing an example of use of the apparatus of the present invention. FIG. 2 is a -n old analytical view showing a configuration example of a combination of a one-turn table and a bottle rotation positioning device. FIG. 3 is a longitudinal sectional view showing an embodiment of the bottle rotation positioning device according to the present invention. Explanation of the symbols 1: Boil rotation positioning device, 2: Case cylindrical body. 3; pulley, 4; clutch plate, 7; bridge is one piece. 8; Fitting recess; 9; Fixed cylinder; 10; Fixed piece. lL12,23, hair ring, 13; elevating columnar body. 14; Locking piece, 15.1B, 19.20; Spring. 21; detection block; 24; transport table. 25; timing screw, 26; guide rail. 27; Pace plate, 28; Guide plate, 29; Star foil for feeding, 31; Holding table, 32; Bottle spin device, 37; Detection switch, 38; Print printer. 39; Feeding star foil, 44; Defective product table. 45; discharge guide rail, 46; rotary table. 47; Assembling is on a column, 48; Mounting is on a table. 49: Pillar, 5I: Push-down piece, B: Bottle. B1. i Locking recess. Applicant Kobayashi Kose Co., Ltd. Applicant Yoshino Kogyo Co., Ltd. Gu2Δ

Claims (2)

[Claims] (1) A straight cylindrical fixed cylinder that is immovably fixed in an upright manner, and is assembled into the fixed cylinder so that it cannot be rotated but can be moved up and down, and the lower end protrudes from the lower end of the fixed cylinder. At the same time, an elevating column has a locking piece fixed to the upper end thereof in a state that projects upward from the fixed cylinder, and the locking piece that locks the upper end in a locking recess formed on the bottom of the bottle, and the fixed cylinder rotates. The case cylinder is assembled so that it can be moved freely but cannot be moved up and down, and has a fitting recess formed in the upper surface into which the lower end of the bottle can fit, and is fixed to the case cylinder through a clutch plate. A bottle rotating positioning device comprising: a pulley; and a spring is provided between the fixed cylinder and the lifting column to constantly apply a pushing force to the lifting column. (2) A straight cylindrical fixed cylinder that is immovably fixed in an upright manner, and is assembled into the fixed cylinder so that it cannot be rotated but can be moved up and down, and the lower end protrudes from the lower end of the fixed cylinder. At the same time, an elevating column has a locking piece fixed to the upper end thereof in a state that projects upward from the fixed cylinder, and the locking piece that locks the upper end in a locking recess formed on the bottom of the bottle, and the fixed cylinder rotates. The case cylinder is assembled so that it can be moved freely but cannot be moved up and down, and has a fitting recess formed in the upper surface into which the lower end of the bottle can fit, and is fixed to the case cylinder through a clutch plate. A bottle rotating positioning device, which is comprised of a pulley and a spring provided between the fixed cylinder and the elevating column to constantly apply a pushing force to the elevating column, is continuously rotated at a constant speed. The assembly is fixed at regular intervals on the peripheral edge of a rotary table, and a holding table is provided above the rotary table to maintain the posture of the bottles supplied to the bottle rotation positioning device. A push-down piece that applies a push-down force to the supplied bottle is provided directly above the device, and a push-down piece is provided near the rotary table that moves along the movement locus of the bottle rotation positioning device as the rotary table rotates. a bottle spin device that rotates the bottle held by the bottle rotation positioning device at least one revolution by bringing a drive belt into contact with a pulley of the bottle rotation positioning device; A printing device for printing on the outer circumferential surface of a bottle, which includes a printing printer that prints on the circumferential surface of the bottle, and a printing printer that prints on the circumferential surface of the bottle.