JPH06255603A - Filling machine - Google Patents

Abstract

PURPOSE:To efficiently form sanitary and safe filling by automating filling of new- and old-style drums of nonuniform shapes with liquid. CONSTITUTION:When a drum 2 is conveyed to a filling area(Y position) by a drum carrier part 5, the drum 2 rises by a rotation auxiliary part, 6 and is rotated by a drum rotating part 7. At that time. a plug position is detected by a plug position-detecting element 8 to stop the rotation and a plug 4 is removed and retained by a plug-opening and closing part 12. Then, a filling nozzle part 13 moves to the upper part of a cap 3 to perform filling, and when filling is completed, the plug-opening and closing part 12 again moves to time original position to automatically screw the plug 4 which the plug-opening and closing part 12 has retained.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to filling machines, and more particularly,
The present invention relates to the structure of an automatic filling machine for a drum can, which automatically removes the plug of the conveyed drum can, fills a predetermined amount of liquid, and automatically attaches the plug after filling.

[0002]

2. Description of the Related Art Conventionally, high-viscosity oil types such as lubricating oil are often packed in drums, etc., but recently, in order to streamline distribution, not only the oil types but also various liquids are packed in drums and transported. Came to be. In order to fill a liquid in a drum can, conventionally, a plug screwed into a cap of a top plate of the drum can is obtained by removing the plug, and a filling nozzle connected to a weighing machine is inserted into the cap to set a predetermined amount, for example, 200 l (liter). ). However, these operations were performed manually, and when the filling amount reached the fixed amount, the flow rate was lowered to prevent overfilling and increase the filling accuracy, but it was inefficient, and the flow rate was increased to achieve high efficiency. If you try to increase the filling speed without lowering the filling speed, the filling liquid will be blown out from the drum can, and the outer surface of the drum can becomes dirty and unclean. It has become difficult to secure people.

In order to efficiently fill the liquid into the drum can, it was necessary to efficiently remove the plug of the drum can and automatically reattach it after filling. However, the drum can is not only new but also old and new. However, there is no drum filling machine having a function of automatically attaching and detaching the plug because the surface of the top plate of the mouthpiece part where the plug is screwed is variously inclined.

Further, as a flow meter for measuring the filling amount, a volumetric flow meter has been widely used in the past, but since the accuracy is ensured by temperature correction, a temperature detector and the temperature detection as a temperature correction means other than the volumetric flow meter. A correction calculator was required to correct the flow rate based on the signal from the device.

[0005]

[Object] The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a filling machine that automates the operation of filling a drum can and enables high-speed and high-precision liquid filling with high efficiency. Is.

[0006]

In order to achieve the above object, the present invention provides (1)
Conveying means for conveying the drum can screwed with a plug to seal the base of the top plate, and locking means for locking the unfilled drum can conveyed by the conveying means and releasing the locking by a filling start command. A drum can rotating means for locking and rotating the unfilled drum can conveyed after unlocking at a predetermined position, and a plug for detecting the plug position of the rotated drum can and stopping the rotation of the drum based on the detection signal. A sensor, a plug opening / closing unit that is movably arranged near the position of the detected plug, removes and holds the plug, attaches the held plug after filling, and seals the base, and a base with the plug removed It is possible to move the filling nozzle part that is inserted into the inside of the container and the plug opening / closing part and the filling nozzle part as a unit so that the plug can be attached and detached and the filling can be performed at the drum can position where the filling is stopped. And a mass flow rate measuring means for setting and measuring the filling amount, and (2) in (1), a plate-like body parallel to the carrying surface of the carrying means. The plate-shaped body comprises a plurality of rotatable rollers rotatably arranged on the plate-shaped body, and driving means arranged at a drum can locking position to move the plate-shaped body up and down. And a rotation assisting means for pushing the drum above the conveying surface to rotate the drum through the free roller, further comprising (3)
In the above (1) or (2), the plug sensor is
A detection lever having a fulcrum shaft rotatably supported outside the locked drum can, and a rod-shaped member fixed to the fulcrum shaft, and having a pitching roller mounted on the drum can top plate at the tip and rotating according to the rotation of the drum can. A positioning plate that is a force point fixed on the rotation locus circle of the drum can of the detection lever, and position detection means that detects the movement of the lever that moves when the drum cap contacts the positioning plate; Further, (4) In the above (1) to (3), the plug is a dish-shaped body having an external thread to be screwed into a drum can and having a locking projection provided in a concave portion, and the plug is opened and closed. The plug opening / closing part is a substrate which is vertically movable to the unit slide part and is guided in the lower part with a degree of freedom, and a clamping part which is arranged to be movable left and right on the substrate and clamps the outer periphery of the drum can base. A plug gripping portion that is fitted and locked in the recessed portion of the plug and that rotates and detaches the plug, and (5) the plug according to any one of (1) to (4) above. The grip portion has a cylindrical body having a groove on the outer periphery for engaging with the locking protrusion of the plug and a protrusion at the center of the end face, and a rod-shaped runout which is guided to the outer peripheral end face of the base and arranged on the outer periphery of the cylindrical body. And a spring means which is arranged in the axial direction of the outer periphery of the cylindrical body and locks the plug with a spring force, and (6) In any one of (1) to (5) above. A sealing means for sealing the plug held by the plug holding portion by screwing the plug held by the plug holding part into the mouthpiece after the filling liquid is filled in the drum can; a reverse rotating means for rotating the plug in a reverse screw direction by a predetermined amount; Having a forward rotation means for rotating forwardly and screwing together, further, 7) In any one of the above (1) to (6), the filling nozzle portion is a filling nozzle having an inner valve, and the filling nozzle is disposed on the valve side of the filling nozzle and on the opening side of the filling nozzle. A void that communicates with the outer periphery with a gap, a sealing member that is disposed on the end face having the gap of the void and that seals against the outer periphery of the mouthpiece, and the filling liquid vapor that has flowed into the void are led to the outside. (8) In any one of (1) to (7) above, the seal member, which is in pressure contact with the outer peripheral end surface of the drum can base, is a conductive metal plate, and the conductive metal plate is provided. The drum can is grounded via the.

FIGS. 1 (a) and 1 (b) are views for explaining an example of the structure of a filling machine according to the present invention. FIG. 1 (a) is an overall side view and FIG. 1 (b) is an overall front view. In the figure, 1 is a filling machine, 2 is a drum can, 3 is a base, 4 is a plug, 5 is a drum can conveying unit, 6 is a rotation assisting unit, 7 is a drum can rotating unit, 8
Is a plug position detector, 9 is a unit slide part, 10 is a guide rail, 11 is an actuator, 12 is a plug opening / closing part, 13 is a filling nozzle part, 14 is a flexible tube, 1
5 is a mass flow meter, 16 is a valve, 17 is a mount, and 18 is a stopper.

First, the outline of the structure and operation of the filling machine 1 will be described with reference to FIG. The filling machine 1 automatically removes the plug 4 of the drum can 2 conveyed in the direction of the arrow X by the drum can conveyer 5 such as a roller conveyor, fills the liquid with a preset constant mass, and plugs the plug 4 after the filling is completed. It is an automatic filling machine that conveys the drum can 2 that has been completely filled by tightening.

In order to perform such an operation, the filling machine 1 is
First, the drum can 2 transported by the drum can transport unit 5 and locked by the stopper 18 is stopped at the lower Y position of the plug opening / closing unit 12 by lowering the stopper 18 by a filling start signal (not shown). At the same time, when the rotation assisting means 6 provided with a free roller pushes up the drum can 2 slightly above the drum can conveying part 5, the drum can rotating part 7 having rubber rings on all sides positions it and the driving wheel 7a causes it to move.
Rotate the drum 2

At this time, the plug position detector 8 is placed on the top plate of the drum can 2. The rotation of the drum 2 is stopped by detecting that the position of the plug 4 has reached the lower part of the plug opening / closing part 12. After that, the rotation assisting section 6 is returned to the original position under the drum can transporting section 5 again.

The plug opening / closing portion 12 descends in the direction of arrow B and engages with the plug 4, but the engaging position is not always accurately determined.
It is arranged so as to be movable in a direction perpendicular to the direction. Since the plug 4 is screwed into the base 3 of the drum 2, the plug opening / closing part 12 rotates the air motor in the direction of arrow D to remove the plug 4, grasps the removed plug 4, and moves in the direction of arrow B.

Next, the unit slide portion 9 is moved rightward in the direction of arrow A by the actuator 11 to move the filling nozzle portion 13 to the position above the base 3 of the drum can 2. next,
The nozzle of the filling nozzle portion 13 moves downward in the direction of the arrow E, is inserted into the mouthpiece 3, seals the joint portion, and starts filling without liquid leakage. As for the filling amount, a mass flow rate preset by a mass flow rate measuring means (not shown) is measured by the mass flow meter 15, and the valve is closed when the mass flow rate reaches a set amount. The mass flowmeter 15 is, for example, a flowmeter using Coriolis force, and utilizes the principle that the Coriolis force generated in a fluid vibrating at a predetermined frequency is determined by the vector product of the mass flow rate and the vibration frequency. It is a direct mass flowmeter that utilizes the fact that a phase difference signal proportional to the Coriolis force is generated in the measurement flow tube when the flow tube is supported with a predetermined section interposed and the central portion is driven by a single vibration. Next, details of the characteristic elements of the filling machine of the present invention will be described.

2 (a) and 2 (b) are views for explaining a drum rotating mechanism according to the present invention. In the drawings, 21 is a rotating shaft, 21a, 21b are gears, and 23a, 23b, 26.
a, 26b are arms, 24a, 24b, 24c, 24d
Is a drum holding roller, 25a and 25b are fulcrums, 2
7a and 27b are springs, 28 is a drum can drive roller, and parts having the same functions as those in FIG. 1 are denoted by the same reference numerals as those in FIG.

The position of the drum 2 conveyed by the drum conveying section 6 is detected by a position detector (not shown),
Based on the position detection signal, the drum transport unit 6 stops and stops at the position shown in the figure. At the same time, the rotation assisting part 6 moves up to the position shown in the drawing, and rises above the surface of the drum can transporting part 5. The rotation assisting section 6 is such that a free roller 6a having a ball rotatably mounted is disposed at four corners of a plate 6b, and the plates 6b are fixed to a rod 6d of an air cylinder 6c. It can be rotated.

When the drum 2 is stopped, the drum 2
Are drum can holding rollers 24a to 24 of the same shape.
and the drum driving roller 28. At this time, the drum holding rollers 24a, 24b
Moves on the broken line to reach the solid line position shown in the figure. The drum can holding rollers 24a and 24b are attached to the ends of the arms 24a and 24b, respectively.
Gears 21a and 21b are meshed with the other ends of a and 24b, and one gear 21a is driven by the drive shaft 21 and contacts the can wall of the drum can 2 at the position shown. The can wall of the other drum can 2 comes into contact with the drum can drive roller 28 and its position is determined. Further, drum can holding rollers 24c and 24d are arranged at symmetrical positions of the drum can holding rollers 24a and 24b, supported by fulcrums 25a and 25b, and a spring 27.
It is pressed by the spring force stretched by a and 27b.
The drum 2 rotatably supported by the rotation assisting portion 6 is freely rotatable. The rotation of the drum can 2 is performed to specify the position of the mouthpiece 3 (plug 4) of the drum can 2.

FIG. 3 is a diagram for explaining an example of the plug position detecting mechanism according to the present invention. In the figure, 31 is a detecting arm, 32 is a fulcrum shaft, 33 is a pitching roller, 34 is a positioning plate, and 35 is a 35. Is a movement detector, 36 is a rotary shaft, 37 is a holding device, and 38 is a substrate. The same acting parts as those in FIGS. 1 and 2 are designated by the same reference numerals.

The plug position detector is a rotating drum 2
A position sensor that detects the position of the mouthpiece 3 that sends a stop signal to a drum can drive unit (not shown) to stop when the position of the mouthpiece 3 reaches just below the plug opening / closing portion 12.
The detection arm 31 is placed on the top plate of the drum 2 when the drum 2 is positioned by the drum holding roller 24a.

The plug position detecting mechanism can be vertically driven with a rotary shaft 36 parallel to the substrate 38 at a position sandwiching the support shaft 32 on a substrate 38 fixed to a support shaft 32 located outside the drum can 2. A holding device 37 is provided. One end of a detection arm 31 whose length does not reach the center of the drum 2 is fixed to the rotary shaft 36, and a pitching roller 33 having an axis in the longitudinal direction of the detection arm 31 is arranged at the other end of the detection arm 31. It is set up. Further, at the position of the base 3 on the lower surface of the detection arm 31, a positioning plate 34 inclined with respect to the axis is fixed.

Next, the operation of the plug position detecting mechanism constructed as described above will be described. First, when the drum can 2 is transported to the filling area by the drum can transporting unit 5 and the outer periphery of the drum can 2 is pressed by the drum can holding roller 24,
The detection arm 31 is lifted to the position indicated by the dotted line by raising the rod 37a of the holding device 37 and placed on the top plate of the drum can 2. When the drum rotating roller 28 rotates in the direction of arrow r, the pitching roller 33 rotates on a circle-side circumference concentric with the drum base locus circle on the top plate. When the base 3 reaches a predetermined position, the positioning plate 34 contacts the base 3 and the detection arm 31 moves in the rotational direction about the fulcrum shaft 32. By this movement, the movement detector 35 detects the position of the mouthpiece 3 and stops the drum can 2.

Drum can 2 transported and stopped in the filling area
The position of the mouthpiece 3 is indefinite, and the angle formed by the pitching roller 33 and the die 3 when placed on the top plate is also indefinite, but when the angle is less than a predetermined angle, the rotation speed of the drum 2 is constant. Does not reach For this reason, the position of the mouthpiece 3 at the time of stop is also indefinite. Therefore, in consideration of this point, the detection arm 31 is lifted by the holding device 37 until it passes through the mouthpiece 3 and is detected in the next circumference.

Although the above-mentioned plug position detecting mechanism is mechanically constructed, the detection of the base 3 may be carried out by other detecting means such as detecting the light beam being blocked by the base 3.

FIGS. 4 (a) and 4 (b) are views for explaining an example of the mechanism of the plug opening / closing part according to the present invention. FIG. 4 (a) is a side sectional view and FIG. 4 (b) is a front view. In the figure, 40 is a substrate,
41 is a guard rail, 42 is a positioning pin, 43 is an actuator, 44 is a first moving board, 45 and 48 are suspension arms, 46 is a horizontal rod, 47 is a second moving board, 49 is a vertical rod, 50 is a motor, and 51 is a motor. A drive shaft, 52 is a base holding portion, 53 is a plug gripping portion, and the portions having the same functions as those in FIG.

The plug opening / closing part 12 of FIG. 4 is precisely screwed into the mouthpiece 3 of the drum can 2 which has stopped due to a positional error from a predetermined position, and the closed plug 4 is removed by reverse rotation.
After the filling, the plug 4 is screwed into the base 3 again, and has the actuator 43, the guide rail 41 and the positioning pin 42, and the fixed substrate 40 and the actuator 43 on the substrate 40 so that the guide rail 41 is mounted on the fixed substrate 40. A first movable substrate 44 arranged to be movable up and down, and a second movable substrate 47 guided by a guide hole 47a by the positioning pin 42 suspended further movably to the first movable substrate 44. The plug holding portion 52 having a plurality of (for example, four) rollers 52a for holding the mouthpiece 3 on the second movable substrate 47 and the plug 4 are detached and grasped, and after the filling is completed, the grasped plug is re-embedded. It has a plug gripping portion 53 that is screwed to 3.

The suspension portion and the positioning pin 42 are provided with a base 3
The plug holding portion 53 can be freely engaged with the plug 4 even if there is some positional error in the position. The second moving substrate 47 to which the mouthpiece holding portion 52 and the plug holding portion 53 are attached is , A horizontal rod 4 supported in parallel by a plurality of pairs of suspension plates 45, 45 fixed to the first moving board 44.
6, 46 and the moving body 5 that moves with respect to the vertical rod 49
Move through 4. The moving body 54 includes slide bearings 54a and 54a that slide on the horizontal rod 46 and slide bearings 54b and 54b that slide on the vertical rod 49.
Have.

As described above, the second movable board 47 suspended so as to be movable back and forth and left and right is immovable at the position indicated by the dotted line in the figure with a small gap between the positioning pin 42 and the guide hole 47a. At the position where the second moving base plate 47 descends and holds the base 4 (indicated by the dotted line), the positioning pin 42 has a small diameter positioning pin portion 42a, so that the second moving base plate 47 has a clearance range with the guide hole 47a. You can move with.

FIG. 5 is a view for explaining the method of holding the mouthpiece of the drum can. When the drum can 2 is stopped at a predetermined position as shown in the drawing, the first and second moving substrates 44 and 47 are lowered to make the mouthpiece. The outer peripheral wall portion of 3 is clamped from both side surfaces by rollers 52a attached to the tip of the mouthpiece holding portion 52. The mouthpiece holding portion 52 has, for example, a lever 52b which is attached to a cylinder (not shown) driven by air pressure and moves left and right, and the roller 52a is attached to the lever 52b.

FIGS. 6 (a) and 6 (b) are views for explaining a method for removing the plug screwed into the mouthpiece of the drum can. FIG. 6 (a) is a partial sectional view of the drum can 2, and FIG. The figure shows the plug removed. As described above, the base 3 having the inner screw 3a and the top plate 2a of the drum can 2 are arranged, and the base 4 is screwed with the plug 4 having the outer screw 4b. A recess 4b is formed in the plug 4, and the recess 4b has a locking projection 4c. The concave portion 4b and the protrusion 4c are portions that engage the plug gripping portion 53.

Generally, the drum can top plate 2a has a curved shape, and since it is used as a filling container many times, it is complicatedly deformed. That is, as shown in FIG.
The axis OO and the moving axis Y-Y of the plug gripping portion 53 do not coincide with each other and have an angle θ, and the angle θ can be considered to be different for each container.

7 (a), (b), and (c) are views for explaining an example of the structure and operation of the plug gripping portion according to the present invention. FIG. 7 (a) shows the plug 4 removed. Previous state,
Figure (b) shows the rest position after picking up the plug, (c) shows the plug closing operation, in which 55 is a cylinder, 56 is a spring,
Reference numeral 57 is a stopper, and 58 is a pivot, and the portions having the same functions as those in FIGS. 1 and 4 are denoted by the same reference numerals as those in FIGS.

The plug gripping portion 53 has a cylindrical body 55 having a diameter slightly smaller than the inner diameter of the recess 4b of the plug 4 fixed to the tip of the drive shaft 51, and a plurality of plugs axially attached to the side surface of the cylindrical body 55. A dogleg-shaped spring 56, a plurality of shake prevention stoppers 57 embedded at right angles to the axis of the cylinder 55,
And a pivot 58 attached to the center of the lower end face,
Further, it has a groove 55a that engages with the locking projection 4c for locking the plug gripping portion 53 in the recess 4b of the plug 4.

Next, the plug attaching / detaching operation will be described with reference to FIG. In the figure (a), the drive shaft 51 from the top of the plug
While rotating, descend as shown by the arrow. However, as it is, as shown in FIG. 6B, the axis OO of the base and the axis YY of the drive shaft 51 have an angle θ and do not coincide with each other, so that the groove 55a is engaged with the locking projection 4c. No, and therefore the plug cannot be removed. The shake prevention stopper 57 and the pivot 58 allow the plug grip portion 53 to be stably engaged with the plug 4 even in such a state, and the pivot 58 rotates while first contacting the bottom surface of the recess. At this time, the shake prevention stopper 56 comes into contact with the outer periphery of the mouthpiece 4 to stop the shake, and moreover, by defining the center with the pivot 58, the plug grip portion can be stably locked to the plug 4.

FIG. 3B shows the plug 4 with the plug gripping portion 53.
With the spring force of the spring 56, it can be pressed and held,
In this state, the filling nozzle portion 13 is inserted into the mouthpiece 4 for filling.

FIG. 3C shows the case where the plug 4 is screwed into the base 3. As described above, since the shaft is tilted, the screws do not mesh with each other and the plug 4 does not engage exactly with the normal rotation.
Cannot be screwed onto the base 3. For this reason, in the present invention, stable screwing is made possible by first reverse rotation of one rotation or more to align the screw grooves and then forward rotation. Next, the filling system will be described with reference to FIGS.

FIG. 8 is a block diagram of the filling system according to the present invention. In the figure, 60 is an operation panel, 61 is a vapor recovery, and the same acting parts as in FIG. ing.

The operation panel 60 receives the mass flow rate signal of the mass flow meter 15 and closes the valve when a preset filling amount is reached, the conveying means 5 of the filling machine 1, the plug opening / closing part 12 and the filling nozzle part. This is a part for instructing driving of the system of 13. The filling nozzle portion 13 is inserted into the mouthpiece 3 of the drum can 2 and is sealed by pressure, measured by the mass flow meter 15, and closed when the filling amount reaches a predetermined value. During filling, the filling liquid and the vapor of the drum can 2 are closed. It is necessary to replace the contained internal air, but the replaced air is introduced into the vapor recovery 61 through the conduit 62 to recover the liquid contained in the vapor so that the vapor is not scattered to the outside air.

FIG. 9 is a view for explaining a partial cross section of the filling nozzle portion according to the present invention. In the figure, 62 is a valve cylinder, 63 is an inlet, 64 is an empty chamber, 65 is a vapor recovery nozzle, and 66. Is a filling nozzle, 67 is a valve element, 68 is a Teflon packing, 69 is a back tray pan, and 70 is a gap.

In FIG. 9, the valve seat 6 is provided in the valve cylinder 62.
A valve body 67 that cooperates with 2a to determine the stop of the outflow of the filling liquid from the filling nozzle 66 is provided, and an inflow port 63 for introducing the filling liquid is opened in the valve body 67. An empty chamber 64 communicating with the filling nozzle 66 and the annular gap 70 is disposed below the valve cylinder 62, and a vapor recovery nozzle 65 is provided in the empty chamber 64.
Are in communication. In addition, a receiving tray 69 is provided below the filling nozzle 66 only after receiving the drool from the filling nozzle 66 after filling. Note that the rear drooping tray 69 rotates horizontally during filling and does not exist at the position shown. Further, for example, a Teflon packing 68 is attached to the lower surface of the empty chamber 64.

Next, the operation of the filling nozzle section 13 configured as described above will be described. As described above, after the plug 4 is removed, the filling nozzle portion 13 descends and the Teflon packing 68 is brought into pressure contact with the outer peripheral end 4a of the mouthpiece 4 of the drum can 2 to be sealed (at this time, the rear drooping tray 69 is filled. Nozzle 66
Is moving from the bottom). Since the outer diameter of the filling nozzle 66 is smaller than the inner diameter of the die 3, there is a gap 71. This gap 71
Communicates with the gap 70 of the vacant chamber 64.

Next, when the valve 67 is pushed up through the rod 67a and opened by a command to start filling, the filling liquid flows into the drum 2 through the filling nozzle 66 through the filling nozzle 66 and is filled therein. . The vapor level that rises with the filling of the filling liquid and fills the drum can 2 is introduced into the vapor recovery device 61 from the gap 70 through the vapor recovery nozzle 65 through the empty chamber 64 and the vapor is diffused to the outside air. It is collected safely without any.

The Teflon packing 68 is chemically stable and is a soft resin and is suitable as a sealing material. However, since the Teflon packing 68 has a high resistance to wire breakage, the filling machine 1 and the drum can 2 are insulated by the Teflon packing 68. . Therefore, discharge occurs due to static electricity generated by the filling liquid during filling, and there is a danger of explosion due to electrostatic discharge particularly when the filling liquid is oil or fat having a low flash point. Since the outer peripheral end portion 4a of the base 4 of the drum can 2 is the only part of the drum 2 which is not coated, the Teflon packing 68 is replaced with a conductive packing, for example,
Since the drum 2 is grounded through the filling machine 1 by using copper, it is not necessary to provide a special ground like the Teflon packing 68.

[0041]

As is apparent from the above description, according to the present invention, even if the shape of the drum can, especially the surface of the top plate on which the mouthpiece is disposed is deformed, the plug screwed into the mouthpiece is automatically removed. Can automatically fill a predetermined mass flow rate,
After that, it became possible to stably screw the plug into the base again. For this reason, it is possible to automatically perform the drum filling, which has been impossible to automate conventionally, and it is possible to efficiently perform the drum filling without causing pollution to the outside in a hygienic manner.

[Brief description of drawings]

FIG. 1 is a diagram for explaining an example of a configuration of a filling machine according to the present invention.

FIG. 2 is a diagram for explaining a drum rotating mechanism according to the present invention.

FIG. 3 is a diagram for explaining an example of a plug position detecting mechanism according to the present invention.

FIG. 4 is a diagram for explaining an example of a mechanism of a plug opening / closing portion according to the present invention.

FIG. 5 is a diagram for explaining a method of holding the base of the drum can.

FIG. 6 is a view for explaining a method of removing a plug screwed into a mouthpiece of a drum can.

FIG. 7 is a diagram for explaining an example of the structure and operation of the plug grip portion according to the present invention.

FIG. 8 is a block diagram of a filling system according to the present invention.

FIG. 9 is a view for explaining a partial cross section of a filling nozzle section according to the present invention.

[Explanation of reference numerals] 1 ... filling machine, 2 ... drum can, 3 ... base, 4 ... plug, 5
... drum can transporting unit, 6 ... rotation assisting unit, 7 ... drum can rotating unit, 8 ... plug position detector, 9 ... unit slide unit,
10 ... Guide rail, 11 ... Actuator, 12 ... Plug opening / closing section, 13 ... Filling nozzle section, 14 ... Flexible tube, 15 ... Mass flow meter, 16 ... Valve, 17 ... Stand, 18 ...
Stopper.

Claims (8)

[Claims] 1. A transport means for transporting a drum can in which a plug is screwed to seal a cap of a top plate, an unfilled drum can transported by the transport means is locked, and unlocked by a filling start command. Locking means, a drum can rotating means for locking and rotating the unfilled drum can conveyed after unlocking at a predetermined position, and detecting the plug position of the rotated drum can,
A plug sensor that stops the rotation of the drum based on the detection signal, and a movably disposed near the position of the plug whose position is detected. The plug is detached and gripped. A plug opening / closing part for sealing the plug, a filling nozzle part for inserting the plug into the cap and filling the liquid, and a plug opening / closing part and a filling nozzle part for performing the attachment / detachment of the plug and the drum can position where the filling is stopped. A filling machine, comprising: a unit slide part movably attached to the unit and mass flow rate measuring means for setting and measuring a filling amount. 2. A plate-like body parallel to the carrying surface of the carrying means, a plurality of free rollers rotatably arranged on the plate-like body, and the plate-like body arranged at a drum can locking position. A driving means for moving the body up and down, and when the drum can is rotated, the plate-like body is pushed up above the conveying surface, and rotation assisting means for rotating the drum can via the free roller is provided. The filling machine according to claim 1. 3. The plug sensor is a fulcrum shaft that is rotatably supported outside the locked drum can, and a rod-shaped body that is fixed to the fulcrum shaft. A detection lever having a pitching roller that rotates according to the rotation, a positioning plate that is fixed on the rotation locus circle of the drum can base of the detection lever and serves as a force point, and a movement of the lever that moves when the drum base contacts the positioning plate. The filling machine according to claim 1 or 2, further comprising: a position detecting unit that detects the position. 4. The plug is a dish-shaped body having an external thread to be screwed into a drum can and having a locking projection provided in a recess, and the plug opening / closing part for opening / closing the plug is provided on the unit slide part. A base plate that is vertically movable and has a degree of freedom in the lower part, a holding part that is arranged to be movable left and right on the base plate, and that holds the outer periphery of the drum can base, and is inserted and locked in the recessed part of the plug. The filling machine according to any one of claims 1 to 3, wherein the filling machine comprises a plug gripping portion for rotating and detaching the plug. 5. The plug gripping portion has a cylindrical body having a groove on the outer circumference for engaging with a locking projection of the plug and a projection at the center of the end surface, and a cylindrical body guided by the outer peripheral end surface of the base to the outer circumference of the cylindrical body. 5. The rod-shaped shake preventing stopper provided and spring means arranged in the outer peripheral axial direction of the cylindrical body for locking the plug with a spring force, according to any one of claims 1 to 4. The filling machine described in Crab. 6. A sealing means for sealing a plug held by a plug holding part by screwing the plug held by a plug holding part into a mouthpiece after filling the drum can with a reverse rotating means for rotating the plug a predetermined amount in a reverse screw direction. The filling machine according to any one of claims 1 to 5, further comprising a forward rotation unit that rotates forward after a predetermined amount of reverse rotation and is screwed into the forward rotation unit. 7. The filling nozzle portion is arranged to communicate with a filling nozzle having an inner valve, the filling nozzle being disposed on the valve side of the filling nozzle and having a gap on the opening side of the filling nozzle with respect to the outer circumference of the filling nozzle. A vacant chamber, a sealing member disposed on an end surface having a gap between the vacant chamber and press-contacting and sealing the outer periphery of the mouthpiece, and a vapor recovery nozzle for discharging the filling liquid vapor flowing into the vacant chamber to the outside. Claims 1 to 6
The filling machine according to any one of paragraphs. 8. The electrically conductive metal plate is used as the sealing member that is brought into pressure contact with the outer peripheral end surface of the mouthpiece of the drum can, and the drum can is grounded through the electrically conductive metal plate.
A filling machine according to any one of 1 to 7.