JPS5938394Y2 - Filling valve chamber lifting device of counter pressure chamber liquid filling machine - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to an improvement of a lifting device for a back pressure type liquid filling machine.

A cam lever elevating system is known as a device for lowering the tulip of a filling valve in a back pressure type liquid filling machine, as seen in Japanese Patent Application Laid-Open No. 47-29071. There is a defect in that a high load acts on the pivot shaft that connects the two, causing wear and tear on the pivot shaft, making it difficult to operate smoothly.

Also, JP-A-49-120786 and JP-A-54-
As seen in Japanese Patent No. 136988, a cam roller is provided on the filling valve itself, and the raising and lowering of the valve is controlled by a fixed cam.The cam device is located close to the mouth of the filling container, and foreign matter such as abrasion powder during operation is avoided. It is easy for pulp to enter the filling container, and especially in the case of a rotary filling machine, the cam device surrounds the filling pulp, which has disadvantages such as hindering the adjustment operation of the filling valve and cleaning operations.

The present invention has been made to overcome these deficiencies, and includes a lifting lever supporting a filling valve that is pivoted on a support frame, and a bending arm consisting of a long arm and a short arm that is attached to the support frame on the inside upper part of the pivot support. The main feature is that the roller at the tip of the long arm is controlled by a cam track, and the roller at the tip of the short arm is engaged with an arcuate guide portion formed on the lift lever.

An embodiment of the present invention will be described with reference to the drawings.A shaft cylinder 2 fitted between the upper and lower fixed tubes 1.1 and rotated by an appropriate rotation mechanism (not shown) has an inner portion inside the fixed tubes 1, 1. An annular liquid distributor 3 with a circular cross section is provided around the axial cylinder 2 and integrally formed therewith, and the liquid distributor 3 communicates with the inside of the cylinder 2 to form a fluid passage a. Branch pipes 4 extending tangentially and radially provided on the shaft tube 2
and communicates with the fluid passage a.

The lower part of the lower fixed pipe 1 is connected to the filling liquid mentor 8 via the pressure pump 6 and liquid supply valve 7 controlled by the differential pressure control device 5, and the upper part of the upper fixed pipe 1 is connected to the differential pressure control device 5. The upper part of the liquid distributor 3 is connected to a pressurized gas supply device (not shown) via a pressurized gas control valve 9 that operates in conjunction with the The liquid distributor 3 is connected to the electric current passage a by a pressurized gas supply pipe 10, and is controlled by the differential pressure control device 5.
A filled liquid storage layer occupies most of the interior, and a small pressurized gas storage layer C is formed above the filled liquid storage layer.

Further, a pressurized air chamber 11 connected to a pressurized air supply device (not shown) and a vacuum chamber 13 connected to a vacuum pump 12 are fixed around the upper fixed pipe 1, and a filling device is attached to the shaft cylinder 2. Additional force is applied so that the 14 holding discs 15 rotate together.

The filling device 14 is roughly divided into a filling head 16 fixed to a holding disk 15, a cylindrical filling pulp chamber 17 that can be raised and lowered relative to the filling head 16, and an elevating mechanism 18 that raises and lowers the filling pulp chamber 1T. It is composed of.

The filling head 16 is provided with a stepped through hole 19 for supplying pressurized gas, and a sealed cylinder 21 in which a piston 20 is fitted in the lower part of the stepped through hole 19, and the upper end of the through hole 19 is divided into two to supply pressurized gas. One of the gas switching valves 22 communicates with an annular pressurized gas distributor 23 and the other with an annular snift chamber 24, and a deaeration switching valve 25 is also provided in the middle of the through hole 19. The through hole 19 is formed to be switchable with the annular suction air container 26.

Thus, the pressurized gas distributor 23 is connected to the pressurized gas supply pipe 10, and the suction air container 26 is connected to the vacuum chamber 13.
The snift chamber 24 is connected to a snift introduction chamber 29 provided around the lower fixed pipe 1 through a pipe 30, and the snift introduction chamber 29 is connected to the atmosphere through a pipe 31. are doing.

The lower part of the cylinder 21 is switchably connected to the upper part of the cylinder 21 and the atmosphere via a switching pulp 32, and the upper part of the cylinder 21 is connected to the pressurized air chamber 11 via a pipe 33.

The piston 20 is fixed to the piston 20, and the upper end is fixed to the stepped through hole.
A filling pulp chamber 17 is fixed to the lower end of the piston rod 34 which is fitted to the piston rod 9 so as to be slidable up and down.
The piston rod 34 is formed to be able to move up and down by a lifting mechanism 18 provided in the filling head 16.

That is, the lifting mechanism 18 is a support frame 3 fixed to the filling head 16.
6, a lifting lever 37 that supports a piston rod 34 which is pivotally supported by the support frame 36, and a bending arm 38 whose bent portion is pivoted to the support frame 36, and the bending arm 38 is rotated clockwise by a spring 39. The energized roller 40 provided at the end of the long arm is regulated by a cam thread 41, and the roller 42 at the end of the short arm is fitted into an arcuate guide hole 43 drilled in the lift lever 37. There is.

Therefore, the filling head 16 is rotated and the roller 40 of the bending arm 38 is vertically restricted by the cam track 41, so that the piston rod 34 can be moved up and down.

A filling liquid supply hole 44 is provided in the upper tangential direction of the filling pulp chamber 17, and the filling liquid supply hole 44 is connected to the universal joint 4.
5.45 and the lower part of the liquid distributor 3 via the liquid supply tube 46, and inside the filling pulp chamber 17, a flow pulp 48 that opens and closes the filling hole 47 is always kept open by a spring 49. Furthermore, a vent tube 50 communicating with the through hole 35 is provided in the center of the interior so as to be biased downward by a spring 51.

Cams 53 and 53 provided on the double operating rod 52 are formed on the flow pulp 48 and the vent tube 50 so as to be able to engage with each other at the same time.
3.53, when the flow pulp 48 and the vent tube 50 are engaged, the flow pulp 48 is closed and held in the raised position of the vent tube 501/'i, and when the engagement is released, the flow pulp 48 is opened by the spring 49. The vent tube 50 is then projected downward by the spring 51.

fx button In the figure, 54 is a seal butt that the mouth edge of the filling container A provided at the lower edge of the filling pulp chamber 17 comes into contact with, 55 is an actuating device for the pressurized gas switching valve 22, 56 is a guide rail for the pressurized gas switching valve 220, 51 is an operating cam of the deaeration switching valve 25, 58 is an operating device for the switching pulp 32, 59 is a guide rail for the switching pulp 32, 60 is an operating device for the double operating rod 52, and 61 is a guide rail for the double operating rod 52. .

Since the embodiment of the present invention is constructed as described above, when the upper and lower parts of the piston 20 of the cylinder 21 are in communication with each other by the switching pulp 32, the roller 40 of the bending arm 38 of the lifting mechanism 18 is regulated by the cam track 41, and the clock is rotated. A piston rod 3 that rotates in the circumferential direction and is supported by a lifting lever 37
4 and when the seal pad 54 of the filling pulp chamber 17 comes into contact with the mouth edge of the filling container A, the deaeration switching valve 25 is activated by the actuation cam 5γ to move the stepped through hole 19 into the suction air container 26.
The inside of the filling container A is communicated with the air container 26, and the air inside the filling container A is supplied to the vent tube 50, the through hole 35, the stepped through hole 19, the suction air container 26, the pipe 28, and the vacuum pump 12. It is degassed via the vacuum chamber 13.

Next, when the deaeration switching valve 25 returns to its original state, the pressurized gas switching valve 22 is actuated by the actuating device 55 to communicate the stepped through hole 19 with the pressurized gas distributor 23, thereby disconnecting the pipe 21 and the pressurized gas supply. At the same time, the switching pulp 32 is actuated by the actuating device 58 to connect the lower part of the piston of the cylinder 21 to the atmosphere and to connect the piston 20 to the upper part of the piston. The filling pulp chamber 17 is pressurized with the pressurized air and the filling container A is pressurized via the piston rod 34.

The double actuating rod 52 is then actuated by the actuating device 60 and its cams 53,53 are connected to the vent tube 50 and the flow pulp 4.
At the same time, the flow pulp 48 is opened and the liquid in the filling valve chamber 17 is filled into the filling container A from the filling hole 4T.

When filling is performed and the liquid level in the filling container A closes the vent tube 50 and the gas pressure and liquid pressure at the top of the filling container A are balanced, the liquid level rises at the liquid level of the liquid distributor 3 and the liquid stops flowing down. , the double operating rod 52 returns and the vent tube 5
0 is raised, the 70-valve 48 is closed, and the liquid in the vent tube 50 naturally falls into the filling container A.

Thereafter, the pressurized gas switching valve 22 is switched to communicate with the atmosphere through the stepped through hole 11, snift chamber 24, via 30, snift introduction chamber 29, and pipe 31 to bring the filling container Ak to normal pressure. The filling valve chamber 17 is switched so that the upper and lower parts of the piston 20 of the cylinder 21 are connected to each other.
After releasing the pressurizing action on the filling container A, the roller 40 of the bending arm 38 of the lifting mechanism 18 is restricted from rotating in the counterclockwise direction by the cam track 41 to raise the piston rod 34 and fill the filling valve chamber 1T. The filling action is completed when it is separated from the container A.

Thus, the supply of filling liquid to the filling valve chamber 17 is fed from the filling liquid tank 8 through the lower fixed pipe 1 and the branch pipe 4 to the liquid distributor 3 without being rectified in the tangential direction, and further to the liquid distributor. 3 is supplied as a flow in a fixed direction from the upper tangential direction of the filling valve chamber 11 by the liquid supply tube 46. In this case, the differential pressure control device 5 controls the pressurization control pulp 9 to This is to control and maintain the water head pressure at a constant pressurized state at all times.

In the present invention, a bent arm consisting of a long arm and a short arm, whose outer end is regulated by a cam track via a roller, is pivoted to a support frame, and the filling pulp is supported at the lower part of the outside of the pivoted part of the support frame. In addition to pivoting the lift lever, the rollers of the short arm of the bending arm are engaged with the inside of the lift lever so that the lift lever rolls and moves up and down using the contact. The filling pulp can be smoothly and easily raised and lowered through the raising/lowering lever while reducing frictional resistance as much as possible.

Therefore, unlike in the prior art, there is no possibility that a high load is applied to the pivot shaft of the cam lever or the pivot shaft that connects the cam lever and the lifting lever, causing the pivot shaft to wear out and prevent smooth operation. The durability of the lifting mechanism can be significantly improved,
In addition, since the cam device is not located close to the mouth of the container, foreign matter such as abrasion particles will not enter the filling container.

In addition, since the cam roller is installed in the filling valve chamber and the cam device is not designed to surround it, the cam device may get in the way and interfere with the adjustment or cleaning of the filling valve chamber and the pulp filling therein. It has the practical benefit of being easy to maintain and inspect because there are no gaps.

[Brief explanation of drawings]

Fig. 1 is a vertical sectional front view of the present invention, Fig. 2 is a side box view of the main part, Fig. 3 is a cross-sectional plan view of the main part, and Fig. 4 is a partially cutaway plan view of the main part. . 17...Filling valve chamber, 36...Support frame, 3T...Elevating lever, 38...Bending arm, 40...Roller, 41・・・・・・
Cam rail, 42...Colo, 43...
Arc-shaped guide hole.

Claims (1)

[Scope of utility model registration request] A filling valve chamber is provided in a filling head fixed to a rotating holding disk so as to be able to rise and fall freely, and the filling valve chamber is supported by an elevating lever that is pivotally supported on a support frame of the filling head and the elevating lever. A bent part of a bent arm formed by a long arm and a short arm is pivoted to a support frame at the inner upper part of the shaft support, and the tip of the long arm is slidably engaged with a fixed cam rail. A roller is provided to control the swinging of the bending arm,
Furthermore, a filling valve chamber elevating device for a counter pressure type liquid filling machine, in which a roller provided at the tip of a short arm is engaged with an arcuate guide portion formed on an elevating lever.