JPH08276991A - Container-lifting/lowering device - Google Patents

Abstract

PURPOSE: To separate easily a lifting/lowering rod and a container table from each other. CONSTITUTION: A connecting cylindrical body 20 is fitted on the upper end of a lifting/lowering rod 18, and both are connected/disconnected by the advancement/retraction of an engaging pin 32. This engaging pin 32 is lockable in a connecting position and in a disconnecting position. At the upper end of the cylindrical body 20 a container table 8 is fixed, and on this container table 8 is a neck support device 26 which supports the mouth 10a of a container 10 from below. The lifting/lowering rod 18 moves upward by means of a lifting cam 52 and moves downward by its weight. When the container 10 is not supplied to the container table 8, the connection of the lifting/lowering rod 18 and the connecting cylindrical body 20 is released by the retraction of the engaging pin 32, so that the container table 8 does not move upward and the valve is therefore not opened. In case of trouble, only the container table 8 can be lowered apart from the lifting/lowering rod 18.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a container lifting device used in a filling machine or the like, and in particular, an auxiliary device for pushing up a filling nozzle and opening a valve is provided on a container table on which a container is placed and lifted. The present invention relates to a container lifting device.

[0002]

2. Description of the Related Art Generally, a filling machine places a container, which is continuously conveyed by a conveyor, on a container table which is supported on the outer periphery of a rotating body so as to be movable up and down at a predetermined interval, and the rotating body rotates. In the meantime, by raising the container base, the container is raised toward the upper filling nozzle, and by opening the filling nozzle by the mouth portion of the container, the valve is opened and the liquid is filled into the container. After the filling is completed, the container table is lowered again to discharge the container onto the conveyor. When the container filled with liquid by such a type of filling machine is made of a soft material such as resin, the container itself raised by the container base can directly push up the filling nozzle to open the valve. It is impossible. Therefore, an auxiliary device such as a support tool that supports the mouth of the container from the lower side is provided on the container base, whereby the filling nozzle is pushed up to open the valve.

However, when the above-mentioned auxiliary device for pushing up the nozzle is provided on the container base, even if the container is not supplied onto the container base, the auxiliary device that rises integrally with the container base operates the valve. There was a problem of pushing open. Therefore, there is already known a container elevating device having a nozzle lifting auxiliary device that opens a valve only when a container is supplied to the container table and does not open the valve when the container is not supplied ( 52-225
17 publication). The container lifting device described in this publication is
Since the structure of the auxiliary device that supports the mouth of the container is complicated and the auxiliary device with a complicated structure is provided on the upper part of the container base, the workability when cleaning or replacing the attachment is poor. There was a drawback.

Therefore, when the container is not supplied onto the container table, the container table is prevented from being raised, so that the auxiliary device for opening the valve does not require a complicated mechanism. Has been proposed (JP-A-1
No. 308796, Japanese Patent Publication No. 6-51518).

The above-mentioned first publication (JP-A-1-308796).
No.), the container lifting device is provided with "a lifting rod supported on a rotary table so as to be lifted, a container base mounted on the lifting rod, and lifting means for lifting the lifting rod. A ball that can be engaged with and disengaged from a recess formed on the outer peripheral surface of the lifting rod, a spring that urges the ball toward the lifting rod, and a rear side of the spring are supported by the lifting means, and when moving, Spring supporting means for weakening the urging force of the spring ".

The second publication (Japanese Patent Publication No. 6-51518)
No.), the container elevating device is provided with: an elevating rod supported on a rotating table so as to be elevatable, a container stand mounted on the elevating rod, and elevating means for elevating the elevating rod. Further, the lifting means includes a ball which can be engaged with and disengaged from a recess formed on the outer peripheral surface of the lifting rod, an air cylinder which presses the ball toward the lifting rod during operation, and an air cylinder and an air source. A switching valve for shutting off communication between the two. "

[0007]

In the container elevating / lowering device described in each of the above publications, when the container is not supplied onto the container base, an elevating rod to which the container base is attached,
The connection between the lifting rod and a lifting mechanism such as a cam that lifts the lifting rod is released to prevent the lifting rod as a whole from being lifted. As a result, when the container is not supplied, the container base does not rise, so that the filling valve is not opened and the function of so-called no-bottle / no-fill can be achieved.

However, in each of the above-mentioned conventional devices, a mechanism for switching between the case where the lifting rod is raised and the case where it is not raised must be provided between the lower end of the lifting rod and the cam as the lifting means. , The structure is complicated. In addition, the lower part of the lifting rod is covered in the lower frame together with the drive unit of the entire apparatus. Therefore, for example, when a trouble such as the container is caught between the container base and the filling nozzle during the filling operation, by lowering the container base at the stopped position, the container in which the trouble occurs It was extremely difficult to do the work of removing the. In addition, the structure of the no-bottle / no-fill mechanism itself is complicated and the number of parts is large, resulting in high cost. Moreover, since the container lifting device having the no-bottle / no-fill mechanism and the container lifting device not having the mechanism have completely different structures for lifting the lifting rod to which the container base is attached, There was a problem that it was not compatible.

Although not intended for the above-mentioned no-bottle / no-fill, there is also known a container elevating device which can separate and drop an elevating rod on which a container stand is attached (Japanese Patent Publication No. 59-59). 24960,
JP-A-59-163191). These devices include "a lifter shaft (elevating rod) 72 that is supported on a rotary table 70 so as to be able to move up and down, and a fastening lock for a lifter shaft 72 that is rotatably mounted across a part of an insertion hole of the lifter shaft 72. Axis 83
And lifter up trip 68 and lifter down trip 69
Switch lever 84 that engages with, the half-moon-shaped recess 86 provided on the locking shaft 83, and the notch 87 provided on the lifter shaft 72. "
"The switching lever 84 engages with the lifter upward trip 68 to rotate the locking shaft 83, and the locking shaft 8 is rotated.
3 is engaged with the notch 87 of the lifter shaft 72. Further, the switching lever 84 engages with the lifter descending trip 69 to rotate the locking shaft 83, and the recess 8 provided in the locking shaft 83.
6 is located at a position facing the lifter shaft 72.
Can descend. It has a structure. The description is given with the reference numeral of Japanese Patent Publication No. 59-24960.

The apparatus described in these publications separates the lifter shaft 72 from the rotary table 70 side by rotating the locking shaft 83 while the lifter shaft 72 is being pushed up by the ascending cam 65 or the descending cam 66. Therefore, it is impossible to separate and drop the lifter shaft 72 at an arbitrary position. Moreover, in these container elevating / lowering devices, the switching lever 84 is operated to engage and disconnect the lifter shaft 72 and the locking shaft 83 for each filling, so that the durability of each part is improved. There was also a problem with such points.

The present invention has been made in order to eliminate the above-mentioned drawbacks, and has a structure capable of connecting and disconnecting the container base and the elevating rod, and when a trouble or the like occurs during filling, that is, at an arbitrary position. It is an object of the present invention to provide a container lifting / lowering device that can easily handle a trouble such as removal of a bottle by separating the container base from the lifting / lowering rod and dropping the container base.

In the second aspect of the invention, the container base and the elevating rod can be separated, and when the container is not supplied on the container base, the elevating rod and the container base are separated to raise the elevating rod. By not raising the container base and stopping the opening of the valve, the function of no-bottle / no-fill can be achieved, and moreover, the structure is simplified and the number of parts is reduced to reduce the cost, and SUMMARY OF THE INVENTION An object of the present invention is to provide a container elevating / lowering device that allows common parts with a container elevating / lowering device having no no-bottle / no-fill mechanism.

[0013]

According to a first aspect of the present invention, there is provided a container elevating / lowering device, an elevating rod supported by a rotary table so as to be able to ascend / descend, and an elevating / lowering means for elevating the elevating rod.
A connecting cylinder slidably fitted to the lifting rod,
A container base fixed to the connecting cylinder, an engaging means that is supported by the connecting cylinder so as to be movable back and forth, and is engageable with and disengageable from an engaging portion formed on the elevating rod, and the engaging means. A lock means for restricting the movement of the means is provided.

The container lifting device according to the second invention is
An elevating rod supported so as to be able to ascend and descend on a rotary table, an elevating means for elevating the elevating rod, a connecting cylinder slidably fitted to the elevating rod, and a connecting cylinder fixed to the connecting cylinder. A container base, an engagement means that is supported by the connecting cylinder so as to be able to move forward and backward, and engages and disengages with an engagement portion formed on the elevating rod, and a locking means that restricts the movement of the engagement means. Drive means for moving the engaging means forward and backward,
A detection means for detecting the presence or absence of a container to be supplied on the container base, and when the detection means detects that the container has not been supplied to the container base, the engaging means is retracted for connection. The connection between the cylinder and the lifting rod is released.

[0015]

In the container raising / lowering device according to the first aspect of the present invention, the engaging rod is engaged with the engaging portion of the elevating rod during the normal filling operation, so that the elevating rod and the container base are separated from each other. When raising and lowering integrally, and when trouble occurs, the engaging means is disengaged from the engaging portion of the elevating rod to separate the connecting cylinder body of the container base from the elevating rod, The container base and the connecting cylinder can be dropped even when the lifting rod is still raised.

In the container lifting device according to the second aspect of the present invention,
When the containers are supplied to each container base without being chipped, the container base is moved by moving the engaging means forward and engaging the engaging part formed on the elevating rod. The fixed connecting cylinder and the elevating rod are connected to each other so that the connecting rod and the elevating rod are integrally moved up and down, and when the container is not supplied on the container base, the engaging means is retracted to move the connecting cylinder and the elevating rod. Since the container base does not move up even if the lifting rod moves up by releasing the connection with the valve, it is possible to prevent the valve from opening by pushing up the upper filling nozzle.

[0017]

The present invention will be described below with reference to illustrated embodiments. FIG. 1 is a vertical sectional view of a filling machine equipped with a container elevating device (generally indicated by reference numeral 2) according to an embodiment of the present invention. The container elevating / lowering device 2 is provided on a rotary table 6 rotatably supported around a column 4 arranged in the center of the filling machine at equal intervals in the circumferential direction, and the container 1 is mounted on a container base 8 described later.
Place 0 and move up and down. Filling nozzles (only the center line C ₁ thereof is shown and not shown) are arranged above the container bases 8, respectively.
As a result, the upper filling nozzle is pushed up to open the valve, and the container 10 is filled with the liquid.

FIG. 2 is an enlarged vertical sectional view showing one of the container elevating / lowering devices 2 and FIG. 3 is a plan view thereof. A cylindrical member 12 is provided in a hole 6a formed near the outer periphery of the rotary table 6. The upper and lower bearings 14, 1 are fixed in the cylindrical member 12.
A rod 18 is supported via 6 so as to be able to move up and down. A connecting cylinder 20 is slidably fitted to the outer periphery of a portion of the elevating rod 18 extending above the cylindrical member 12. A protrusion 22 extending vertically from the upper end to the vicinity of the lower end is fixed to the side surface of the elevating rod 18, and is fitted in a vertical groove formed on the inner surfaces of the bearings 14 and 16. The rotation of the elevating rod 18 is restricted. Further, a vertical groove 20 a is formed on the inner surface of the connecting cylinder body 20, and the protrusion 22 of the elevating rod 18 is formed.
Are fitted together, the connecting cylinder 20 can be moved up and down relatively to the lifting rod 18, and the relative rotation is restricted. Furthermore, at the lower end of the connecting cylinder 20,
An outer cylinder 23 having an inner diameter larger than the outer diameter of the cylindrical member 12 is fixed and moves up and down along the outer surface of the cylindrical member 122. When the lifting rod 18 and the connecting cylinder 20 are integrally lowered, the lower surface of the connecting cylinder 20 contacts the upper surface of the upper bearing 14 and stops.

A flat plate-like portion 20b extending laterally (outward in the radial direction of the rotary table 6) is formed at the upper end of the connecting cylinder 20, and a plate-like portion is formed on the upper surface of the plate-like portion 20b. The container base 8 is fixed. As shown in FIG. 1, a neck holder 26 that supports the mouth 10 a of the container 10 is fixed on the container base 8 via an upright support member 24, and is supplied from an inlet star wheel 28. The mouth 10a of the container 10 is supported from the lower surface side. Also,
A body holder 29 that holds the body of the container 10 placed on the container base 8 is fixed to the lower portion of the support member 24.
In FIG. 2, the support member 24 and both holders 26, 29 are shown.
Are not shown.

A radial through hole 20b is formed slightly below the plate-like portion 20b of the connecting cylinder 20. In addition, on the lower surface of the plate-shaped portion 20b of the connecting tubular body 20,
The sleeve 30 is fixed, and the engaging pin 32 penetrates through the sleeve 30 so as to be movable back and forth. This engagement pin 32
The tip end of is inserted into a through hole 20c formed in the side wall of the connecting cylinder 20. A stopper plate 34 is fixed to the upper end surface of the lifting rod 18,
The connecting cylinder 20 is designed so as not to come out of the upper end of the elevating rod 18. With the connecting cylinder 20 moved to the uppermost position with respect to the lifting rod 18, the lifting rod 1
At the position corresponding to the through hole 20c on the outer surface of 8, a recess 18a into which the tip of the engaging pin 32 can be fitted is formed. Therefore, the engaging pin 32 is advanced toward the center of the connecting cylinder 20, and the tip of the engaging pin 32 is moved up and down.
When it is engaged with the concave portion 18a, the up-and-down rod 18 and the connecting cylinder 20 are connected and can be moved up and down integrally, and the engaging pin 32 is retracted to move the tip thereof and the up-and-down rod 1.
8 is disengaged from the recess 18a, the connecting cylinder 20 to which the container base 8 is fixed and the elevating rod 18 are separated, and the container base 8 is moved up and down relative to the elevating rod 18. It will be possible.

On the outer peripheral surface of the engagement pin 32, two annular grooves 32a and 32b are formed. On the other hand, in the sleeve 30, a steel ball 38 biased toward the engagement pin 32 by a spring 36 is held, and the steel ball 38 is held in either of the two annular grooves 32a and 32b. By fitting the claw (see FIG. 4 showing the engagement pin 32 and the steel ball 38 in an enlarged manner), the engagement pin 32 is restricted from freely moving back and forth and held at that position. Spring 36
When the steel ball 38 pressed by is fitted in the first annular groove 32a (the left annular groove in FIGS. 2 to 4) near the tip of the engaging pin 32, the tip of the engaging pin 32 is The connection rod 20 and the elevating rod 18 are released from the recess 18a of the elevating rod 18, and the steel ball 38 is fitted into the second annular groove 32b on the side far from the tip of the engaging pin 32. When the engaging pin 32 is engaged, the tip end of the engaging pin 32 engages with the recess 18a on the outer surface of the elevating rod 18, and the connecting cylinder 2
0 and the lifting rod 18 are held in a connected state. In this embodiment, the annular grooves 32a and 32b and the spring 3 are arranged so that the engagement pin 32 does not move freely.
Although the lock means composed of the steel ball 38 pressed by 6 is provided, the structure of the lock means is not limited to this, and it is also possible to stop by the frictional force of the O-ring or the like.

On the lower surface side of the end portion (the right end portion in FIGS. 2 and 3) of the engaging pin 32, the downward cam follower 4 is provided.
0 is attached. On the other hand, the container lifting device 2 of the filling machine
Above the position where the container 10 is fed and discharged (for example, between the inlet star wheel 28 that supplies the container into the filling machine and the outlet star wheel that discharges the container from the filling machine), the above-mentioned engaging member via the cam follower 40. An operation cam 42 for moving the dowel pin 32 back and forth is arranged. This operating cam 42
As shown in FIG. 7, is fixed on the cylinder 44, and the operation of the cylinder 44 causes the cam follower 40 and the engaging pin 32 integral with the cam follower 40 to move back and forth toward the center of the elevating rod 18. The operation cam 42 is a path along which the cam follower 40 moves in accordance with the rotation of the rotary table 6 (the cam follower 40 moves in the direction of arrow R in FIG. 8).
Of the pair of cam surfaces 42a, 42 arranged to face each other on both sides of the
b. These cam surfaces 42a and 42b have a wide interval on the upstream side (the lower side in FIG. 8) of the cam follower 40 in the traveling direction, and the interval is gradually narrowed, and the cam follower 40 on the downstream side (the upper side in FIG. 8) in the traveling direction. Has a spacing approximately matching the diameter of the.

A sensor (not shown) for detecting the presence / absence of the container 10 is provided on the inlet star wheel 28 for supplying the container 10 into the filling machine, and the cylinder 44 is operated by a signal from this sensor. To be done. The cylinder 44 for moving the operation cam 42 moves the operation cam 42 toward the center of the filling machine during a normal filling operation. When the sensor detects that the container 10 that should be supplied on the container base 8 is removed, when the container base 8 corresponding to the removed container 10 reaches the position of the operation cam 42. The actuating cam 44 is actuated by the detection signal from this sensor to move the actuating cam 44 outward in the radial direction of the filling machine.

At the lower end of the elevating rod 18, elevating means for elevating the elevating rod 18 (reference numeral 4 as a whole).
6) is provided. The elevating means 46 is a cam follower 50 for ascending (FIGS. 1 and 2) supported by a pin 48 which is vertically inserted through the lower end of the elevating rod 18.
5 and 6), the ascending cam 52 that pushes up the cam follower 50 (see FIG. 1), and the descending cam follower 48 formed at one end of the orthogonal pin 48.
a and a descending cam 54 that pushes down the cam follower 48a (the ascending position is shown by the solid line in FIG. 2, and the descending position is shown in FIG.
And shown in phantom in FIG. 2). The raising / lowering means of the raising / lowering rod 18 is not limited to the above-mentioned configuration, and for example, it may be always urged upward by air and forcibly lowered by a cam.

The elevating rod 18 descends most at the position where the container 10 is supplied onto the container base 8 from the inlet star wheel 28 arranged on the outer peripheral side of the filling machine (see the container elevating device 2 on the left side of FIG. 1). ), As the rotary table 6 rotates, it is gradually raised by the raising cam 52. The container 10 is filled while the filling nozzle is pushed up at the most raised position (see the container elevating device 2 on the right side of FIG. 1) to open the valve, and while maintaining its height and rotating. After the filling is completed, the elevating rod 18 gradually descends by its own weight and descends to the lowest position again before the exit star wheel,
The container 10 on the container table 8 is discharged onto the container transfer conveyor 56. Although the elevating rod 18 descends due to its own weight, it is forcibly lowered by the descending cam 54 when it does not descend due to close contact with the upper filling nozzle side.

The operation of the filling machine having the container elevating / lowering device 2 having the above structure will be described. Container transport conveyor 58
The containers 10 that have been continuously conveyed by are positioned at equal pitches by a timing screw or the like (not shown), and are supplied into the filling machine through the inlet star wheel 28. At the position where the container 10 is supplied, the elevating rod 18 of the container elevating device 2 is lowered to the lowest position as described above (see the left side of FIG. 1), and the container 10 is placed on the container base 8 in this descending position. Will be posted. As shown in FIG. 1, this container 10 is supported on the lower surface side of the mouth 10a by a neck holder 26 provided on the container base 8 and held on the outer periphery of the body by a body holder 29.

Thereafter, as the rotary table 6 of the filling machine rotates, the ascending cam follower 50 is pushed up by the ascending cam 52, and the elevating rod 18 is gradually raised.
By raising and lowering the elevating rod 18 and the container base 8, the container 10
Rises, and its mouth 10a comes into close contact with the bottle mouth packing of the upper filling nozzle and pushes it up to open the valve. At this time, since the mouth portion 10a of the container 10 is supported on the lower surface side by the neck holder 26, even if the container 1 made of a soft material is used.
Even in the case of 0, the valve can be opened without being deformed.

While the valve is opened and the container 10 is being filled with the liquid, the elevating rod 18 and the container base 8 are rotationally moved in the most raised position. When the filling of the predetermined amount of liquid into the container 10 is completed, the lifting rod 18 is lowered by its own weight or by the lowering cam 54.
When the mouth 10a of the container 10 separates from the bottle mouth packing due to the lowering of the container base 8, the filling nozzle descends and the valve closes. Thereafter, the container 10 is discharged onto the container transfer conveyor 58 by the exit star wheel and sent to the next step. On the other hand, the container elevating / lowering device 2 in which the container 10 is taken out from the container base 8 passes through the operation cam 42 arranged between the outlet star wheel and the inlet star wheel 28.

When the container 10 to be supplied next to the container elevating device 2 is being fed by the inlet star wheel, the operating cam 42 is kept in the state of being moved toward the center of the filling machine. The cam follower 40 attached to the engagement pin 32 passes between the both side cam surfaces 42a and 42b of the operation cam 42 as it is. In addition,
At this time, the engagement pin 32 is locked by the steel ball 38 being pressed into the second annular groove 32b on the side far from the tip.

When the container 10 to be supplied next is not sent to the container elevating device 2 in which the container 10 has been discharged from the container base 8 through the outlet star wheel, that is,
When the sensor detects that the container 10 is pulled out from the inlet star wheel, the cylinder 44 is operated when the container elevating device 2 reaches the operation cam 42 by a signal from this sensor. When the cylinder 44 moves outward in the radial direction of the filling machine, the cylinder 4
4 is moved backward (moving the rotary table 6 outward in the radial direction) while holding the cam follower 40 attached to the engagement pin 32, and the tip of the engagement pin 32 is fixed. And the recess 18a of the lifting rod 18 are disengaged. Then, the connection between the connecting cylinder 20 to which the container base 8 is fixed and the elevating rod 18 is released. In this state, the steel ball 38 is pressed into the first annular groove 32a on the tip side of the engagement pin 32, and the free movement of the engagement pin 32 is restricted. In addition, the container base 8 in which the container 10 was not supplied
When the container 10 is supplied to the next container base 8, the cylinder 40 is immediately actuated to return the actuating cam 42 to the original position on the radially inner side.

The container elevating / lowering device 2 in which the connection between the connecting cylinder 20 and the elevating / lowering rod 18 is released passes through the inlet star wheel 28 without being supplied with the container 10, and then is attached to the lower end of the elevating / lowering rod 18. When the lifted cam follower 50 is lifted by the lift cam 52, the lift rod 18 moves up in the same manner as when the container 10 is supplied and normal filling is performed. However, the connecting cylinder 20 to which the container base 8 is fixed is separated from the elevating rod 18 so that it can be freely moved up and down, and is rotated without moving from the lowered position. Since the container base 8 does not rise even if the elevating rod 18 rises, the container base 8
The neck holder 26 provided above does not push up the filling nozzle to open the valve, so that no bottle and no fill can be achieved.

The raising / lowering rod 18 of the container raising / lowering device 2 to which the container 10 was not supplied rises, descends after passing the filling area, passes through the outlet star wheel again, and then the operating cam 4
Reach position 2. At this time, the stopper plate 34 fixed to the upper end of the elevating rod 18 causes the upper end surface of the elevating rod 18 and the upper surface of the connecting tubular body 20 to coincide with each other, and the tip of the engaging pin 32 and the concave portion of the elevating rod 18 are aligned. 18a
And are facing each other. When the next container 10 to be supplied to this container elevating device 2 is being sent by the inlet star wheel 28, the operating cam 42 is already in its original position by the cylinder 44 (in the radial inward direction shown in FIG. 1). The cam follower 40, which has been returned to the position) and attached to the engagement pin 32, moves one of the cam followers 40 from the wide inlet side (the lower side in FIG. 8) of the operating cam 42 to the narrow outlet side. The surface (cam surface located radially outward of the rotary table 6) 42a is moved inward in the radial direction. Then, the engaging pin 32 moves forward and its tip is fitted into the recess 18 a of the elevating rod 18, and the elevating rod 18 and the connecting cylinder 20 are connected. After that, the container 10 is supplied from the inlet star wheel onto the container base 8, and the lifting rod 18
And the container table 8 is raised, and a normal filling process is performed. As described above, in this embodiment, the lifting rod 18 and the container base 8 can be separated and connected with each other with an extremely simple structure, and the function of no bottle and no fill can be achieved.

Furthermore, when the operation is stopped due to a trouble such as the container 10 being caught between the raised container base 8 and the upper filling nozzle during the operation of the filling machine, the operation is manually performed. By retracting the engaging pin 32 to disengage the recess 18a of the elevating rod 18, the connecting cylinder 20 can be separated from the ascending and descending rod 18, so that only the container base 8 is lowered. Then, the container 10 can be easily removed. In the above-mentioned conventional container lifting device, in order to prevent the container base from rising, the lower end of the lifting rod and the lifting cam are separated, so that the container base can be easily lowered when such a trouble occurs. Although not possible, in the present invention, only the container base 8 can be lowered by a simple operation, and the original state can be easily restored.

[0034]

As described above, according to the present invention, an elevating rod supported by a rotary table so as to be able to ascend and descend, elevating means for elevating the elevating rod, and slidably fitted to the elevating rod. And a container base fixed to the connecting cylinder, and an engaging portion that is supported by the connecting cylinder so as to be movable back and forth and is engaged with and disengages from an engaging portion formed on the elevating rod. Since the engaging means and the locking means for restricting the movement of the engaging means are provided, only the container base can be lowered while the elevating rod is being raised, and when trouble occurs, etc. It is possible to perform processing such as container removal by a very simple operation.

According to the second aspect of the invention, a driving means for moving the engaging means forward and backward and a detecting means for detecting the presence or absence of a container supplied on the container base are provided, and the detecting means is provided on the container base. When it is detected that is not supplied, the engaging means is retracted to disconnect the connecting cylinder and the elevating rod, so that the function of no-bottle / no-fill is achieved with an extremely simple configuration. can do. Also,
It is possible to reduce the cost by reducing the number of parts. Moreover, the parts can be shared regardless of the presence or absence of the no-bottle / no-fill function.

[Brief description of drawings]

FIG. 1 is a vertical sectional view of a filling machine equipped with a container elevating device according to an embodiment of the present invention.

FIG. 2 is an enlarged vertical sectional view of the container lifting device.

FIG. 3 is a plan view of FIG. 2;

FIG. 4 is a diagram showing a relationship between an engagement pin and a steel ball.

FIG. 5 is a side view of the lower portion of the lifting rod.

FIG. 6 is a bottom view of the lifting rod.

FIG. 7 is a side view of the advancing / retreating means.

FIG. 8 is a plan view of the advancing and retracting means.

[Explanation of symbols]

 6 Rotating Table 8 Container Base 18 Lifting Rod 18a Elevating Rod Engaging Part (Recess) 20 Connecting Tube 32 Engaging Means (Engaging Pins) 32a Locking Means (Annular Groove of Engaging Pins) 32b Locking Means (Engagement) Pin annular groove) 36 Locking means (spring) 38 Locking means (steel ball) 42 Forward / backward moving means (operating cam) 46 Elevating means

Claims (2)

[Claims] 1. An elevating rod supported on a rotary table so as to be able to ascend and descend, and elevating means for elevating the elevating rod.
A connecting cylinder slidably fitted to the lifting rod,
A container base fixed to the connecting cylinder, an engaging means that is supported by the connecting cylinder so as to be movable back and forth, and is engageable with and disengageable from an engaging portion formed on the elevating rod, and the engaging means. A container elevating / lowering device, comprising: locking means for restricting movement of the means. 2. An elevating rod supported by a rotary table so as to be able to ascend and descend, and elevating means for elevating the elevating rod.
A connecting cylinder slidably fitted to the lifting rod,
A container base fixed to the connecting cylinder, an engaging means that is supported by the connecting cylinder so as to be movable back and forth, and is engageable with and disengageable from an engaging portion formed on the elevating rod, and the engaging means. A lock means for restricting movement of the means, a drive means for moving the engaging means forward and backward, and a detection means for detecting the presence or absence of a container to be supplied on the container base are provided. A container elevating / lowering device which retracts the engagement means to release the connection between the connecting cylinder and the elevating / lowering rod when it is detected that the liquid is not supplied.