JPH06286703A - Filling device for liquid - Google Patents

Abstract

PURPOSE:To make it practical to adjust the height of the rail, control the quantity of the filling, and compensate for changes caused by the temperature, all with efficiency and accuracy by connecting the rail to a lifting device capable of numerical control and a limiting member to a sliding mechanism capable of numerical control. CONSTITUTION:A rail 10 for holding a multiplicity of cartons 12 is connected to a lifting mechanism 17 having, for example, a servomotor 19 in a setup to raise and lower the rail 10 according to the height of the carton 12. A filling machine is provided with a filling cylinder 63 for sucking in and discharging liquid, a driving cylinder 44 for the reciprocation in the filling cylinder 63, a stopper 45 fixed to the piston rod of the driving cylinder 66, and a limiting member 46 with which the stopper comes in contact. The stroke of the filling cylinder 63 is adjusted by sliding the limiting member 46 to a different position by a servomotor or the like. Furthermore in channels 63, 64 for working fluid connected to the driving cylinder 44 electromagnetic throttle valves 66 for electrically controlling the quantity of the flow of the working fluid are provided. Thus it becomes possible to completely automate the liquid-filling operation.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid filling device for filling a liquid food such as liquor or other liquid into a container such as a carton.

[0002]

2. Description of the Related Art Carton widely used as a container for filling liquid such as liquor (70: see FIG. 11).
Is generally manufactured by the liquid filling apparatus shown in FIG.
This device is a bottom molding machine (71), a spigot mounting machine (72),
A filling machine (73), a top molding machine (74), etc. are arranged in series in series, and a carton (70) having a sealed structure is manufactured by the following procedure.

A bottom molding machine (71) molds a laminated thin plate made of paper, film and the like into a bottomed rectangular tube shape with the top (75) open.

In the mouthpiece mounting machine (72), the mouthpiece (76) is inserted into a hole provided in the top (75) in advance and heat-welded.

A filling machine (73) fills the inside with a liquid.

Top molding machine (74), top (75)
Is bent into a predetermined shape, and this is heat-sealed and hermetically sealed.

Generally, in the above liquid filling device, the carton (70) after the bottom molding machine (71) is transferred, that is, between the mouth plug mounting machine (72) → filling machine (73) → top molding machine (74). The rails (75) installed between the spigot mounting machine (72) and the top molding machine (74) and a suitable carrier (not shown)
The transfer mechanism (76) is composed of. That is, the carton (70) formed in the shape of a bottomed rectangular tube by the above procedure is lined up and supplied on the rail (75), and the carton (70) is slid on the rail (75) while being slid on the rail (75) in the direction indicated by the carrier. Then, it is sequentially conveyed to each device (72) to (74).

By the way, in order to smoothly perform each of the above-mentioned operations (-) by the above-described mouth plug mounting machine (72), filling machine (73), top molding machine (74), etc., the upper end portion of the carton (70). Must always be positioned above the preset transport level (h). That is, even when the size of the used carton (70) is changed, especially when the height dimension is changed, the transport level (h) must be maintained at the previous position. For this reason, conventionally, when changing the carton size, the spacer (78) interposed between the rail (75) and the substrate (77) is changed to a different length (78 ') as shown in FIG. Have changed.

FIG. 14 shows a conventional structure of the filling machine (73). The filling machine (73) includes a liquid tank (80) for storing a liquid, a fixed amount supply mechanism (81) connected to the liquid tank (80), and a fixed amount supply mechanism (81) via a discharge pipe (82). It is composed of connected filling nozzles (79).

The fixed quantity supply mechanism (81) includes a filling cylinder (8) connected to the liquid tank (80) and the discharge pipe (82).
3), a drive cylinder (84) such as an air cylinder that drives the piston (83a) of the filling cylinder (83), and a stopper (85) fixed to the piston rod (83b) of the filling cylinder (83). And a regulating member (86) for regulating the stroke end of the stopper (85). The drive cylinder (84) has two air flow passages (87a) (87b) on the head side and the rod side with a piston (not shown) in between.
The piston rod (84b) is vertically movably connected to the stopper (85) through the stationary member (88), the intermediate member (89), and the regulating member (86). The restriction member (86) is in contact with the intermediate member (89) fixed to the stationary member (88) via the tapered surface (S). An annular gap (90) is provided between the restriction member (86) and the piston rod (84b) of the drive cylinder (84).
The restricting member (86) is allowed to move along the tapered surface (S). A check valve (91) is provided between the liquid tank (80) and the filling cylinder (83), and between the discharge pipe (82) and the filling nozzle (79).

In the above structure, when the drive cylinder (84) is activated and the piston (83a) of the filling cylinder (83) is lowered, the liquid is sucked from the liquid tank (80) and filled in the filling cylinder (83). To be done. Further piston (83
When a) is lowered, the stopper (85) eventually contacts the regulating member (86), and the piston (83a) is prevented from further dropping. At this stage, the liquid suction process ends,
The amount of liquid suctioned at this time is proportional to the stroke (t) of the piston (83a). Next, when the drive cylinder (84) is reversely activated to raise the piston (83a), the liquid sucked into the filling cylinder (83) causes the liquid to be discharged into the discharge pipe (82) and the check valve (9).
It passes through 1) and is filled into the carton (70) from the filling nozzle (79). Repeat the above steps until the rail (75)
The cartons (70) aligned and supported above are sequentially filled with liquid.

Further, when the size of the carton (70) is changed as described above, it is necessary to switch the filling amount of the liquid to a size suitable for a new carton size. Conventionally, this switching work is performed by exchanging the regulating member (86) with one having a different length. This allows
The contact position between the restriction member (86) and the stopper (85) is changed in the vertical direction, and the stroke (t) of the piston (83a) is changed, so it is possible to switch to a filling amount that matches the new carton size. Becomes

Further, in general, when there is a temperature change in the system such as when the liquid filling temperature is changed or when the room temperature changes, the thermal expansion of the filling cylinder (83) and the specific gravity of the liquid change. Due to the influence of the above, the filling amount of the liquid changes. However, this type of carton is usually controlled by weight. Therefore, if there is such a temperature change,
Stroke (t) of piston (83a) before inhaling liquid
Needs to be finely adjusted to correct the filling amount. Traditionally,
To adjust this, turn the adjusting screw (93) to adjust the adjustment member (8
6) is moved along the tapered surface (S). As a result, the regulating member (86) is guided by the tapered surface (S) and moves slightly up and down, so that the above-described correction work can be performed.

[0014]

As described above, generally, when changing the carton size, it is necessary to adjust the height of the rail and to change the filling amount.

However, conventionally, since the height adjustment of the rail and the switching of the filling amount are performed by exchanging the spacer and the regulating member, it is difficult to finely adjust the rail height and the filling amount. In addition, the spacers and the restriction members need to be replaced manually by the operator, which significantly reduces the work efficiency. In particular, when using a carton that is out of the existing standard size and out of the rated filling amount, it is necessary to newly manufacture a spacer and a regulating member suitable for the carton, which further lowers the work efficiency. Further, since the operator also manually adjusts the filling amount with respect to the temperature change by turning the adjusting screw, the work efficiency is further reduced.

Generally, in consideration of the filling efficiency, the higher the filling speed when filling the liquid in the carton, the better. However, if the filling speed is too high, the liquid foams or bounces in the carton. The liquid adheres to the carton top, causing problems such as difficulty in heat welding the top. Therefore, when filling the liquid, it is necessary to set an appropriate filling speed that is neither too large nor too small. However, the optimum filling rate depends on the size of the carton, especially the height dimension of the carton and the type of filling liquid. For example, if the height of the carton is small,
It is necessary to set the filling speed low in order to prevent the liquid from splashing back, and also to reduce the filling speed when using a liquid that easily foams.

As described above, since the optimum filling speed varies depending on the size of the carton used, the type of liquid, etc., it is desirable that the filling speed can be switched. However, in the conventional filling machine, the carton size and the type of liquid. The liquid was always filled at a constant rate regardless of.

Therefore, an object of the present invention is to provide a liquid filling device having the following features.

The work of adjusting the rail height and the filling amount, and the work of correcting the temperature change can be performed efficiently and accurately.

It is possible to easily perform these fine adjustments.

The filling speed of the liquid can be switched appropriately.

[0022]

In order to achieve the above object, the present invention provides a filling cylinder for sucking a liquid proportional to a stroke of a piston from a liquid tank and discharging the liquid into a container, and a reciprocating drive of the filling cylinder. Drive cylinder, a stopper fixed to the piston rod of the filling cylinder, and a filler having a regulating member that abuts the stopper to regulate the stroke of the piston, and a large number of containers lined up and supplied from outside the system. And a rail for supporting the rail, and a liquid filling apparatus for sequentially feeding a large number of containers supported on the rail and filling a fixed amount of liquid into the containers, wherein the rail is provided with a first drive source capable of numerical control. Is connected to a lifting mechanism, the regulating member is connected to a slide mechanism including a numerically controllable second drive source, and
An electromagnetic throttle valve for controlling the flow rate of the working fluid is provided in the working fluid passage connected to the drive cylinder.

Further, a thermal sensor is provided in the liquid tank and the filling cylinder, and the contact position between the regulating member and the stopper is corrected according to the detection value of the thermal sensor.

[0024]

Since the rail is connected to the elevating mechanism having the first drive source capable of numerical control, the height of the rail can be adjusted steplessly by the numerical control of the first drive source and its fine adjustment is easy. Can be done.

Since the regulation member is connected to the slide mechanism having the second drive source capable of numerical control, when the drive source is activated and the regulation member is slid, the contact position between the stopper and the regulation member is changed. Change. As a result, the stroke of the piston changes, so that the filling amount can be switched and the fine adjustment of the filling amount can be easily performed.

Since the electromagnetic throttle valve for controlling the flow rate of the working fluid is provided in the flow path of the working fluid connected to the drive cylinder, the suction / discharge speed of the drive cylinder can be adjusted by appropriately adjusting the electromagnetic throttle valve. Can be arbitrarily changed to obtain a desired filling speed.

Further, since a heat sensitive sensor is provided in the liquid tank and the filling cylinder and the contact position between the regulating member and the stopper is corrected according to the detection value of the heat sensitive sensor, the liquid temperature changes. Accurate filling amount management that takes into account the thermal expansion of the filling cylinder can be automatically performed.

[0028]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention will be described below with reference to FIGS.

FIG. 1 is a plan view (a) and a side view (b) of a liquid filling device according to the present invention. As shown in the figure, the liquid filling device includes a carton supply section (1), a bottom molding machine (2), a mouth plug insertion machine (3), a mouth plug welding machine (4), a top temporary folding machine (5a) (5b). ), Filling machine (6), top heater machine (7), top seal machine (8), carton unloading section (9)
The mechanisms (4) to (8) from the spigot insertion machine (3) to the carton unloading section (9) are provided above the rail (10). The carton (12) is molded by the following procedure.

First, the base paper supplied to the carton supply section (1) is formed into a bottomed rectangular tube shape by the bottom forming machine (2), and the formed products are aligned and supplied onto the rail (10). Next, the stopper is inserted and welded by the stopper inserting machine (3) and the stopper welding machine (4), and then the top temporary folding machine (5a) forms a crease having a predetermined shape on the top. Further, the filling machine (6) is used to fill a certain amount of liquid, and the top temporary folding machine (5b) temporarily closes the top. Then, the top is sealed by the top heater machine (7) and the top seal machine (8), and the completely sealed carton (12) is taken out from the carton carry-out section (9). Mouthpiece insertion machine (3)
From the carton to the carton unloading section (9) (12)
Is carried by a carrier (11) described later.

FIG. 2 is a side view of the rail (10), and FIG. 3 is a sectional view taken along the line AA in FIG. However, in both drawings, illustration of the spigot insertion machine (3) to the carton carry-out section (9) and the like is omitted.

As shown in FIG. 2, the rail (10) has a first
Of the drive source (15) and the first drive source (15), and a plurality of gear boxes (16) arranged along the longitudinal direction of the rail (10) are connected to the lifting mechanism (17). Has been done.

The first drive source (15) is composed of a servo motor (19) and a speed reducer (20) connected to the servo motor (19). The servomotor (19) is connected to an operation panel (21: see FIG. 1) via a control device and is configured to be capable of numerical control. The output shaft of the speed reducer (20) is connected to a worm (24: described later) in each gear box (16) via a joint rod (22) and a joint (23).

As shown in FIG. 3, each gear box (16) is composed of a neck portion (16a) and a hollow body portion (16b). The neck portion (16a) is fixed to a substrate (26) connected to a stationary member (not shown) via a disc-shaped connecting member (27). Inside the body (16b), there is a worm (24)
And the worm wheel (28) meshed with the worm (24) are housed with their axes orthogonal to each other. Warm (2
4) is the joint rod (22) and the joint (2
It is connected to the output shaft of the speed reducer (20) via 3).

Each gear box (16) is provided with a vertically elevating rod (30) penetrating its center. The lifting rod (30) has a cylindrical sliding part (30
a), and the lower half is a lead screw (30b) having a diameter smaller than that of the sliding portion (30a), and its upper end is fixed to the rail (10). The sliding part (30a) is inserted into the neck part (16a) and the worm wheel (28) with a vertically movable hame eye, while the lead screw (30b) is attached to the lower surface of the worm wheel (28). It is inserted and meshed with the nut (31).

In the above structure, when the operation panel (21) is operated to drive the servo motor (19), the worm (24) in each gear box (16) rotates and the axis (XX) is the center. The worm wheel (28) and the nut (31) rotate together. Then, the rotation of the nut (31) is converted into the ascending or descending of the elevating rod (30) by the lead screw (30b) meshing with the nut, and as a result, the rail (10) ascends and descends. The correspondence between the rotation speed of the servo motor (19) and the amount of elevation of the elevating rod (30) is preset in the control device. Therefore, the height of the rail (10) can be automatically adjusted according to the size of the carton (12) to be used by setting the vertical movement of the rail (10) appropriately by keyboard input on the operation panel (21). It is possible to maintain the transport level (H) at the upper end of the carton (12) at a fixed position. In addition, since the vertical movement of the rail (10) can be set steplessly, fine adjustment of the rail height can be easily performed, and the height can be easily adjusted even when using a carton (12) that does not meet the existing standard dimensions. You can make adjustments.

An example of the structure of the carrier (11) is shown in FIGS. In this carrier (11), four sets of endless chains (33) are vertically separated from each other and stretched on both sides of a carton (12) respectively, and an L-shaped cross section is retained between the upper and lower chains (33). A large number of metal fittings (34) are erected, and the locking metal fittings (34) are provided at positions for restraining the four corners of the carton (12). By intermittently driving this carrier (11), the carton (12) is fed in the direction of the arrow while sliding on the rail (10), and the carton (1)
2) is sequentially transported to the spigot insertion machine (3) to the carton unloading section (9).

As the above-mentioned lifting mechanism (17), any mechanism capable of continuously lifting the rail (10), for example, a combination of a ball screw and a ball nut can be used. In addition, the lifting mechanism (17) is used for the carton (12).
It can be used not only when the transport levels (H) of the rails are matched, but also when the height of the rail (10) needs to be adjusted for some reason regardless of the size of the carton (12) used.

FIG. 5 is a vertical sectional view of the filling machine (6). As shown in the figure, the filling machine (6) includes a liquid tank (37) for storing a liquid, a fixed amount supply mechanism (38) connected to the liquid tank (37), and a discharge pipe (39) in the fixed amount supply mechanism (38). )
It is composed of a filling nozzle (40) connected to each other via.

The fixed amount supply mechanism (38) includes a filling cylinder (4) connected to the liquid tank (37) and the discharge pipe (39).
3), a drive cylinder (44) such as an air cylinder that reciprocally drives the piston (43a) of the filling cylinder (43), and a stopper (45) fixedly installed on the piston rod (43b) of the filling cylinder (43). A restricting member (46) that restricts the stroke end of the piston (43a) by contacting the stopper (45),
And a slide mechanism (47) for moving up and down the regulating member (46). Although not shown, between the liquid tank (37) and the filling cylinder (43) and the discharge pipe (3
Check valves are respectively provided between the filling nozzle (40) and the filling nozzle (40).

The piston rod (43) of the filling cylinder (43)
A thick disk-shaped abutment member (50) is attached to the lower end of b). The abutting member (50) is a cylindrical restricting member (4
6) A contact member (51) mounted on the tip of a piston rod (44b) of a drive cylinder (44) (hereinafter referred to as a drive rod (44b)) extending through the drive cylinder (44) is integrally joined with a screw or the like. The stopper (45) is formed by integrating the abutting member (50) and the abutting member (51).

FIG. 6 is an enlarged vertical sectional view of the slide mechanism (47), and FIG. 7 is a lateral sectional view taken along the line BB in FIG. As shown in both figures, a guide portion (53) having a hexagonal cross section is formed above the substantially intermediate point of the drive rod (44b). On the other hand, a fitting portion (54) having an inner diameter surface with a hexagonal cross section is formed at the upper end portion of the regulation member (46), and the fitting portion (54) is a guide portion of the drive rod (44b). (53)
It is fitted with a screwdriver that allows it to be raised and lowered.
Further, an annular gap (5) is provided between the drive rod (44b) and a portion of the inner diameter surface of the regulation member (46) excluding the fitting portion (54).
5) has been formed. As a result, the regulation member (46)
Can be moved up and down with respect to the drive rod (44b), and is fixed in the circumferential direction by the engagement of the fitting portion (54) and the guide portion (53) so that it cannot rotate.

FIG. 8 is a transverse sectional view taken along the line CC in FIG. As shown in FIGS. 6 and 8, the slide mechanism (47) includes a second drive source (56), a worm (58) mounted on the output shaft (57) of the second drive source (56), The worm wheel (59) meshes with the worm (58). The restricting member (46) and the drive rod (44b) are integrally inserted through the center of the worm wheel (59). The worm wheel (59) and the restricting member (46) are the inner diameter of the worm wheel (59). The surface and the outer diameter surface of the restricting member (46) are connected by meshing of threads.

The second drive source (56) is composed of a speed reducer and a servomotor. As shown in FIG. 5, this servomotor is connected to the operation panel (21) via a control device and is configured to be capable of numerical control. The control device is connected to the output wires of the thermal sensor (60) provided in the liquid tank (37) and the filling cylinder (43).

In the above structure, when the operation panel (21) is operated to start the servo motor of the second drive source (56),
The worm (58) and the worm wheel (59) meshed with the worm (58) rotate. The rotation of the worm wheel (59) is converted into an upward movement or a downward movement of the regulation member (46) by a screw connection between the worm wheel (59) and the regulation member (46). In this way, the target carton (12)
After moving the regulating member (46) to a predetermined position that conforms to
When the drive cylinder (44) is started and the piston (43a) of the filling cylinder (43) is lowered, the stopper (4
5) contacts the regulating member (46) as shown by the chain double-dashed line,
Further lowering of the piston (43a) is prevented. Then, the drive cylinder (44) is reversely activated to move the piston (43a).
The liquid sucked into the filling cylinder (43) passes through the discharge pipe (39) and the check valve (not shown) and is filled into the carton (12) from the filling nozzle (40). Hereinafter, the above operation is repeated to sequentially fill each carton (12) aligned and supported on the rail (10) with a fixed amount of liquid.

It should be noted that the control device previously stores the correspondence relationship between the rotation speed of the servo motor and the amount of elevation of the restriction member (46), the correspondence relationship between various carton sizes and the stop position of the restriction member (46), and the like. It is set.

Thus, in the present invention, the regulating member (46)
Is connected to a slide mechanism (47) having a second drive source (56) capable of numerical control so that it can be raised and lowered. Therefore, the stopper (45) and the regulating member (46) can be moved by raising and lowering the regulating member (46). It is possible to arbitrarily change the contact position of (1).
Therefore, if the vertical movement amount of the regulating member (46) is appropriately set by keyboard input or the like on the operation panel (21), the filling amount can be automatically switched. Further, since the amount of raising and lowering of the regulating member (46) can be set steplessly, fine adjustment of the filling amount can be easily performed, and it is also suitable when using the existing carton (12) out of the rated filling amount. Can be set to various filling amounts.

The liquid temperature and the temperature of the filling cylinder (43) are detected by the heat sensitive sensor (60), and the control device corrects the position of the regulating member (46) according to the detected value. Therefore, a correction operation for a temperature change such as a room temperature change or a liquid temperature change is automatically performed, and the filling amount can be accurately controlled.

As shown in FIG. 9, a filling speed control mechanism (62) is connected to the drive cylinder (44). The filling speed control mechanism (62) includes a first air flow path (63) and a second air flow that supply a working fluid such as air to the air chambers on both sides of a piston (not shown) of the drive cylinder (44). Equipped with a channel (64), both air channels (63) (64) are 3 ports 2
It is connected to an air supply source via a position switching solenoid valve (65). The first and second air flow paths (63) (64)
A check valve (66) and an electromagnetic throttle valve (67) are connected in parallel with each other. Here, the electromagnetic throttle valve (67) is a throttle valve of a type that changes the throttle amount in proportion to the electric current,
In this embodiment, an electropneumatic proportional valve (trade name) manufactured by SMC Co., Ltd. is used. The electromagnetic throttle valve (67) is connected to the operation panel (21) via a control device, and is configured to control the throttle amount by a control signal from the control device. The controller is preset with a filling speed suitable for various sizes of the carton (12) and kinds of liquids.

The filling operation by the filling machine (6) will be described below with reference to FIGS. 10 (a) and 10 (b).

First, the slide mechanism (47) is activated,
The regulating member (46) is moved in advance to a position corresponding to the filling amount of the carton (12) used. Next, as shown in FIG. 10 (a), the solenoid valve (65) is switched to switch the first air flow path (63).
Is connected to an air supply source, and air is sent to the rod side of the drive cylinder (44). The flow rate of air at this time is appropriately adjusted by the electromagnetic throttle valve (67) according to the size of the carton (12), the characteristics of the liquid, and the like. As a result, the piston (43a) of the filling cylinder (43) descends, and the liquid is sucked into the filling cylinder (43) from the liquid tank (37).
Eventually, the stopper (45) contacts the regulating member (46), and the piston (43a) of the filling cylinder (43) stops.

Then, as shown in FIG. 7B, the solenoid valve (65) is switched to connect the second air flow path (64) to the air supply source to connect the head side of the drive cylinder (44). Send air to. The amount of air supplied at this time is also the same as in the above case.
Adjust the electromagnetic throttle valve (67) to an appropriate level. As a result, the piston (43a) of the filling cylinder (43) rises, and the liquid sucked into the filling cylinder (43) passes through the discharge pipe (39) from the filling nozzle (40) at a predetermined speed to the carton (12). ) Is filled in.

As described above, in the present invention, the electromagnetic throttle valve (67) is provided in the first and second air flow passages (63) (64), and the flow rate of air is controlled by the electromagnetic throttle valve (67). With this configuration, the liquid suction / discharge speed in the filling cylinder (43) can be set arbitrarily. Therefore, even when the size of the carton (12) is changed or the liquid is changed, the filling speed suitable for the carton size and the characteristics of the liquid can be easily selected. Also,
Since the electromagnetic throttle valve (67) can set the throttle amount steplessly,
The optimum filling speed can be easily set when using a carton (12) out of the standard size or when filling a new liquid.

The fixed amount supply mechanism (38) and the filling speed control mechanism (62) are, as described above, the filling cylinder (43).
Not only when using the piston type as
The same can be applied when a positive displacement pump such as a bellows is used.

[0055]

As described above, according to the present invention, since the rail is connected to the elevating mechanism having the first drive source capable of numerical control, the rail height suitable for the size of the container is efficiently and efficiently. It can be obtained accurately and its fine adjustment can be easily done. Further, since the height can be adjusted steplessly, the height of the rail can be easily adjusted even when using a container that does not meet the existing standard dimensions.

Since the regulating member is connected to the slide mechanism having the second drive source capable of numerical control,
If you start the drive source of and slide the regulation member,
The filling amount can be switched. Therefore, the filling amount that matches the size of the container can be easily and accurately selected, and
The filling amount can be easily adjusted even when using a container out of the existing standard size.

Further, an electromagnetic throttle valve is provided in the flow path of the working fluid connected to the drive cylinder, and the flow rate of the working fluid is controlled by this electromagnetic throttle valve, so that the suction / discharge speed of the filling cylinder can be set arbitrarily. . Therefore, even when the size of the container is changed or the filling liquid is changed, it is possible to easily switch the filling speed according to the carton size and the characteristics of the liquid. Further, since the throttle amount of the electromagnetic throttle valve can be set steplessly, the optimum filling speed can be easily set even when using a carton having an existing nonstandard size or when filling a new liquid.

Further, since a heat sensitive sensor is provided in the liquid tank and the filling cylinder and the abutting position of the regulating member and the stopper is corrected according to the detection value of the heat sensitive sensor, the correction work for the temperature change is extremely easy. I can do it.

From such a point, according to the device of the present invention,
It is possible to achieve full automation of the liquid filling process.

[Brief description of drawings]

FIG. 1 is a plan view (a) and a side view (b) of a liquid filling device.

FIG. 2 is a side view of a rail and a lifting mechanism.

3 is a cross-sectional view taken along the line AA in FIG.

FIG. 4 is a plan view showing a configuration example of a carrier.

FIG. 5 is a vertical cross-sectional view showing the overall configuration of the filling machine.

FIG. 6 is a vertical sectional view of a slide mechanism.

7 is a cross-sectional view taken along the line BB in FIG.

8 is a cross-sectional view taken along the line CC in FIG.

FIG. 9 is a vertical sectional view of a filling machine including a filling speed control mechanism.

FIG. 10 is a vertical sectional view showing the operation of the filling speed control mechanism.

FIG. 11 is a perspective view of a carton.

FIG. 12 is a side view showing a schematic structure of a conventional liquid filling device.

FIG. 13 is a side view showing a conventional rail height adjustment procedure.

FIG. 14 is a vertical sectional view of a conventional filling machine.

[Explanation of symbols]

 6 Filling machine 10 Rails 12 Container (carton) 15 First drive source 17 Lifting mechanism 37 Liquid tank 43 Filling cylinder 43a Piston 43b Piston rod 44 Drive cylinder 45 Stopper 46 Restricting member 47 Sliding mechanism 56 Second drive source 63 First Air flow path 64 Second air flow path 66 Electromagnetic throttle valve

Claims (2)

[Claims] 1. A filling cylinder for sucking a liquid proportional to a stroke of a piston from a liquid tank and discharging the liquid into a container, a drive cylinder for reciprocating the filling cylinder, and a piston rod of the filling cylinder. A stopper and a filling machine having a restriction member that contacts the stopper to restrict the stroke of the piston, and a rail that supports a large number of containers lined up and supplied from outside the system, and a large number supported on the rail. In the liquid filling device for sequentially feeding the container of No. 1 and filling the container with the quantitative liquid, the rail is connected to an elevating mechanism including a numerically controllable first drive source, and the regulating member is numerically controlled. Connected to a slide mechanism with a possible second drive source,
Further, the liquid filling device is characterized in that an electromagnetic throttle valve for controlling the flow rate of the working fluid is provided in the working fluid passage connected to the drive cylinder. 2. A heat-sensitive sensor is provided in the liquid tank and the filling cylinder, and the contact position between the regulating member and the stopper is corrected according to the detection value of the heat-sensitive sensor. Item 2. The liquid filling device according to item 1.