JPH07110672B2 - Intermittent rotation type filling device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an intermittent rotation type filling device for filling a container which is intermittently transferred, and more particularly to an intermittent rotation feeding and returning mechanism for the filling nozzle.

[0002]

2. Description of the Related Art Conventionally, as this type of intermittent rotary filling device, a predetermined working area for filling liquid, driving inner plugs, capping, etc. is provided in accordance with the rotation angle of a table that rotates intermittently. In the filling area, a type in which a plurality of filling nozzles repeat the filling operation and the returning operation at the same time is known (Japanese Patent Publication No. 59-46874).

[0003]

However, since the above-mentioned conventional one adopts the urging means using the spring material as the returning mechanism for the filling nozzle, the impact at the end portion of the returning operation is large, and the liquid is However, there is a drawback that the pins for engagement cannot be promptly inserted due to the reaction and the driving speed is reduced. The present invention has been made to solve the above-mentioned drawbacks of the prior art, and an object of the present invention is to provide an intermittent rotation type filling device that further reduces the impact at the time of the returning operation of the filling nozzle. .

[0004]

In order to solve the above problems, the present invention can relatively rotate a driven table connected to a nozzle support that supports a filling nozzle and a drive table that is intermittently driven. The driving force transmitting means that engages only in the following rotation is attached between the driven table and the driving table, and the quick return mechanism composed of the Geneva mechanism is connected to the driven table. Characterize.

[0005]

In the present invention, since the quick return mechanism composed of the Geneva mechanism is adopted as the return mechanism of the filling nozzle, the impact at the start end and the end of the return operation can be reduced, so that the liquid scattering and the driving force transmitting means can be achieved. Can be prevented from interfering with the engagement. Further, since the transmission of the driving force is performed between the superposed driven table and the driving table, the engagement and disengagement operation of the engaging means between them is easy, so that the stability and certainty of the operation are improved.

[0006]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view showing a container transfer section according to an embodiment of the present invention. In the figure, reference numeral 1 is a main body of the apparatus, and 2 is a transfer surface of a transfer conveyor. A target container such as a bottle is transferred on the transfer surface 2 while being guided by a guide (not shown). 3 is a front support member for supporting the front part of the container, 4 is a rear support member for supporting the rear part of the container, and these front support member 3 and rear support member 4 support the front and rear of an appropriate height of the container. And move in the direction of the arrow. Similarly, the front support member 5 and the rear support member 6 are located below the container, and the front support member 5 and the rear support member 6 are supported and transported by the front and rear. Reference numerals 7 and 8 denote front and rear side support members that have slopes in opposite directions, and that support the side portions of the container by these slopes, and adjust the relative positional relationship between the slopes. By adjusting the crossing position, the transfer center of the container is always adjusted to coincide with the work line. Then,
Front-rear supporting rotary body having front and rear supporting members 3, 4 to 5, 6 on its outer peripheral portion, and side supporting rotary body having front and rear side supporting members 7, 8 on its outer peripheral portion. Forms a container transfer wheel, and is intermittently driven via a drive table connected to an appropriate intermittent rotation drive mechanism described later. Further, in the figure, 9 is a guide member arranged so as to face the container transfer wheel, and is made of a flexible material having elasticity. The guide member 9 is supported by a large number of supports 10, and a target container is transferred on a transfer path formed between the guide member 9 and the container transfer wheel. Further, in the figure, 11 is a support column for guiding the lifting and lowering of the nozzle support, and 12 is a cylindrical case for accommodating the nozzle lifting mechanism inside, which are supported by a driven table to be described later. Reference numeral 13 is an operating portion for adjusting the height of the guide member 9, 14 is an operating portion for adjusting the guide diameter of the guide member 9, and 15 is a conveying surface of the discharging conveyor.

FIG. 2 is a vertical sectional view showing a main part of a drive mechanism for the filling nozzle, which is a feature of the present invention. In the figure,
Reference numeral 16 denotes a nozzle support, which will be described as supporting a plurality of filling nozzles 17, in the present example, six filling nozzles 17. Each of the filling nozzles 17 is connected to a filling liquid supply mechanism (not shown) via a filling hose, and is configured to perform a filling operation with timing. Further, as described above, the nozzle support 16 is guided up and down by the column 11, and
It is driven up and down by a screw driving body 20 screwed onto a screw shaft 19 whose rotation is controlled by a servo motor 18. In the figure, reference numeral 21 denotes a deformable band-shaped sealing sheet, which has a slit portion formed in the cylindrical case 12 for vertical movement of a connecting member 22 which connects the screw driving body 20 and the nozzle support body 16. It is for sealing. Further, in the figure, reference numeral 23 is a drive table, which is provided by a known intermittent rotation drive mechanism 24 including a drive motor and appropriate indexing means.
It is rotated intermittently via gears 25 and 26. Reference numeral 27 denotes a driven table, which is an in-process driving force transmitting means which is engaged only when the driven table 23 is rotated following the driving table 23.
One engagement hole 28 formed in the driven table 27,
Intermittently through a drive transmission means composed of three engagement pins 29 that are arranged to be retractable from the drive table 23 so as to engage with the engagement holes 28 in a specific positional relationship described later. It is configured to be rotationally driven. In addition,
Reference numeral 30 denotes a spring that projects the engagement pin 29 from the drive table 23 and urges the engagement pin 29 in a direction to engage with the engagement hole 28. Further, the driven table 27 is provided with a quick return mechanism composed of a Geneva mechanism via a connecting shaft 31. In the figure, 32 is a lever part of the Geneva mechanism, 33 is a drive wheel, 34 is a crank pin, and 35 is a tooth part.

Next, the operation of the Geneva mechanism and the retracting control of the engagement pin 29 will be described with reference to FIG. Figure 3
[Fig. 3] is a bottom view of the Geneva mechanism unit as seen from below. 3 in the figure
Reference numeral 6 is a support shaft, and the drive wheel 33 is connected to the drive motor side of the intermittent rotation drive mechanism 24 via a tooth portion 35, and the drive table 23, and further the driven table, is centered on the support shaft 36. It rotates continuously while synchronizing with 27 in a fixed relationship. Reference numeral 37 is an engagement groove portion formed in the lever portion 32, and the crank pin 34 is formed as the drive wheel 33 rotates.
Engages to quickly return the lever portion 32. Reference numeral 38 denotes a cam plate attached to the drive wheel 33. The cam plate 38 attaches the lever 40 via the cam follower 39 at a timing immediately before the crank pin 34 is engaged with the engagement groove portion 37.
It is set so as to rotate about 1 and pull the end 42 of the link mechanism connected to the engagement pin 29. By this operation, the L-shaped lever 44 of FIG. 2 is rotated via the connecting rod 43 that constitutes the link mechanism connected to the end 42 thereof, and the engaging pin 29 is lowered via the elevating shaft 45. The engagement with the engagement hole 28 is released.

However, during the filling operation, the engaging pin 29 engages with the engaging hole 28 and the driven table 27 is engaged.
Performs a filling operation while following the drive table 23 and rotating intermittently. It goes without saying that during this time, the nozzle support 16 supporting the six filling nozzles 17 is in the state of being lowered to the filling position by the servo motor 18 via the screw driving body 20. In this filling operation, as described above,
In this example, since the six filling nozzles 17 are provided and filling is performed simultaneously, the driven table 27 is
In accordance with the container transfer stroke and 6 strokes, first, from the position of the starting point 0, the five stages of ab-c-d-e are intermittently rotated in sequence, and in the next one stroke, from e to 0 by the Geneva function. The recovery operation will be performed. That is, the first 5 strokes
The driven table 27 rotates following the drive table 23,
In the remaining one stroke, the driven table 27 performs the returning operation, and at the same time, the drive table 23 moves by one stroke in parallel and the filling pin 29 is engaged with the next fitting hole 28, and the filling cycle is repeated. It will be. In this case, due to the characteristics of the Geneva mechanism, since the operation is gentle at the start and end of the operation, the impact is small, so in order to prevent liquid scattering,
It is extremely effective. Needless to say, the engagement of the engagement pin 29 is released via the link mechanism by the function of the cam plate 38 or the like during the return operation. Further, in this example, three filling cycles are set for one rotation of the drive table 23, and accordingly, three engaging pins 29 are also arranged. As the driving force transmission mechanism that engages only during the follow-up rotation, a one-way transmission means such as a ratchet mechanism that engages only in the follow-up rotation direction is used instead of the engagement between the engagement pin 29 and the engagement hole 28. In this case, the link mechanism can be omitted.

[0010]

According to the present invention, the following effects can be obtained based on the above constitution. (1) Since the quick return mechanism composed of the Geneva mechanism is adopted as the return mechanism of the filling nozzle, the impact at the start end portion and the end portion of the return operation can be reduced, which hinders the scattering of the liquid and the engagement of the driving force transmission means. Can be prevented from coming. (2) Since the driving force is transmitted to the filling nozzle between the superposed driven table and the driving table, the engaging and disengaging operation of the engaging means between them is easy, so that the stability and certainty of the operation are ensured. Be improved.

[Brief description of drawings]

FIG. 1 is a perspective view showing a container transfer section according to an embodiment of the present invention.

FIG. 2 is a vertical cross-sectional view showing the main parts of the drive mechanism of the embodiment.

FIG. 3 is a bottom view showing a main part of the Geneva mechanism portion of the embodiment.

[Explanation of symbols]

1 ... Device main body 11 ... Strut 12 ... Cylindrical case 16 ... Nozzle support 17 ... Filling nozzle 18 ... Servo motor 19 ... Screw shaft 20 ... Screw driver 21 ... Sealing sheet 22 ... Connecting member 23 ... Drive table 24 ... Intermittent rotation drive mechanism 25 ... Gear 26 ... Gear 27 ... Driven table 28 ... Engagement hole 29 ... Engagement pin 30 ... Spring 31 ... Connection shaft 32 ... Geneva mechanism lever 33 Drive wheel 34 Crank pin 35 Teeth 36 Spindle 37 Engaging groove 38 Cam plate 39 Cam follower 40 Lever 41 Spindle 43 ... Connection rod 44 ... L-shaped lever 45 ... Lifting shaft

Claims (1)

[Claims] 1. A driven table, which is connected to a nozzle support that supports a filling nozzle, and a drive table that is intermittently driven are superposed in a relatively rotatable state, and
By providing a driving force transmission means that engages only between the driven table and the drive table at the time of follow-up rotation, and connecting a quick return mechanism composed of a Geneva mechanism to the driven table, the follow-up rotation can be performed at the time of filling. An intermittent rotation type filling device, wherein the filling nozzle is intermittently rotated and fed, and when returning, the engagement of the drive transmission means is released and the Geneva mechanism is quickly returned.