JP2012250743A - Cut nozzle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve the following problem of a cut nozzle to be used for filling a packing bag with a liquid material (for example, salted cuttlefish) containing hard-to-cut solid materials: electric wiring is required for rotating a piston of the cut nozzle by a motor, the motor needs to be protected from water for preventing short circuit, and a rotary power transmitting mechanism comprises a spline and a gear, thereby increasing the number of parts and volume.SOLUTION: The cut nozzle includes a cylinder 10 having a discharge opening 10B formed at a lower end thereof and a supply port 10A for a filler communicating with a discharge passage 10C, a piston 11 which can be moved up/down in the discharge passage 10C, and a driving source 15 connected to the piston 11 for moving up/down the piston 11. A spiral guide groove 21 is formed on an outer peripheral wall of the piston 11, and a pin 22 engaging with the guide groove 21 is provided in the cylinder 10. The upward/downward motion of the piston 11 is utilized for the rotary driving source of the piston 11.

Description

The present invention relates to a cut nozzle used when filling a bag with a liquid (for example, squid salty salt) containing a solid that is difficult to cut.

A cut nozzle is used to fill a bag or the like with a liquid or viscous material. In the cut nozzle, the piston moves up and down in the cylinder, and the packing material is filled in the packing bag. At that time, the squid fillet may remain protruding from the filler supply port formed on the side wall of the cylinder toward the discharge passage side of the cylinder, but the squid fillet is pushed by the lower end of the piston and the periphery of the supply port. Yes.

However, if the filling has a thin skin, such as squid salty, the thin skin may be cut poorly, or the cut thin skin may be stuck between the cylinder and the piston to stick to the thin skin. Sometimes the fillets that are not falling off the cut nozzle.

FIG. 3 shows a cut nozzle of Patent Document 1 for solving the above-mentioned problem. In Patent Document 1, a discharge opening 10B is formed at the lower end, and a filler supply port communicated with the discharge passage 10C. Disclosed is a cut nozzle provided with a cylinder 10 having 10A formed on a side wall and a piston 11 that moves up and down in the discharge passage 10C and cuts the filling material at the periphery of the lower end when passing through the supply port 10A. Yes.

The cut nozzle has a spline 11 </ b> A connected to the upper portion of the piston 11, and the spline 11 </ b> A is slidably engaged with internal teeth formed on the inner periphery of the gear 12. The gear 12 and the piston 11 are rotated together by a gear 14 pivotally supported by the motor 13. The joint 16 that connects the piston rod of the air cylinder 15 and the spline 11A allows the piston 11 to rotate.

Therefore, when the motor 13 is driven simultaneously with the raising / lowering of the piston 11 by the air cylinder 15, the piston 11 moves up / down and slides through the gear 12 via the spline 11A.

When the piston 11 descends while rotating, the piston 11 is combined with the motion of descending and rotating, and the solid matter in the liquid matter including the solid matter supplied from the supply port 10A is the lower end of the piston 11. Since the shape of the cutting at the periphery is cut and the relative speed of the periphery of the lower end with respect to the solid material is increased, the cutting of the filling becomes easier than a simple press cutting when the piston 11 is not rotated, and it is like a squid skin. Even if it is difficult to cut, it can be cut reliably.

JP 2000-264308 A

However, in Patent Document 1, since a motor is used as the rotational drive source of the piston, electric wiring is necessary, and since water is leaked when water is applied to the motor, there is a problem that countermeasures against water are necessary. .
In addition, since the rotational power transmission mechanism uses splines and gears, there is a problem that the number of parts is large and the volume is increased.

Accordingly, the present invention provides a cut nozzle that does not use electricity or a motor as a rotational drive source of a piston, uses a spline and a gear as a rotational power transmission mechanism, and moves up and down while the cylinder rotates with a simple configuration. With the goal.

The present invention includes a cylinder in which a discharge opening is formed at a lower end and a supply port for a filler communicated with the discharge passage is formed, a piston that is movable up and down in the discharge passage, and a drive source that lifts and lowers the piston. A cut nozzle provided with a guide groove formed in one of the cylinder and the piston, and a pin that engages with the guide groove is provided in the piston or cylinder corresponding to the guide groove. .

With the above configuration, the cut nozzle of the present invention uses the lifting and lowering motion of the piston as the rotational drive source of the piston, and therefore does not use a separate rotational drive source such as a motor. Since gears are not used, the number of parts is small and the volume is small.

Front view of the cut nozzle of the present invention The front view of the cut nozzle explaining the effect | action of this invention Front view of a conventional cut nozzle

Hereinafter, the cut nozzle of the present invention will be described with reference to FIG.
As shown in FIG. 1, in the cylinder 10, a discharge passage 10C having a lower end as a discharge opening 10B is formed to penetrate in the vertical direction, and a filler supply port 10A communicating with the discharge passage 10C is formed in the side wall. . One end of a hose (not shown) is connected to the supply port 10 </ b> A, and a filling pump (not shown) for feeding a filling material to the cylinder 10 is connected to the other end of the hose.

A piston 11 that slides up and down in the discharge passage 10C is fitted in the discharge passage 10C. A spiral guide groove 21 is formed on the outer peripheral wall of the piston 11.

The cylinder 10 has a double structure, and the inner side in contact with the piston 11 is hard-plated so as not to seize the sliding piston 11.

The cylinder 10 is provided with a pin 22 projecting from the outside of the cylinder 10 into the discharge passage, and is engaged with the guide groove 21 of the piston 11. The pin 22 is fixed to the cylinder 10 using a screw (not shown).

A cylindrical support 17 is disposed on the cylinder 10, and an air cylinder 15 that is an elevating drive source for the piston 11 is attached on the support 17.

The joint 16 fixed to the tip of the piston rod of the air cylinder 15 is connected to the upper part of the piston 11, and the joint 16 is structured to allow the piston 11 to rotate.

Next, the operation will be described with reference to FIG.
When the cut nozzle is attached to a known automatic bagging machine, the cut nozzle is supported on the vertical movement shaft of the automatic packaging machine. In order to fill the packing bag with the filler, the discharge nozzle 10B is inserted into the bag port of the packing bag supported by the automatic bagging machine by lowering the cut nozzle. Next, after the filling material is discharged from the discharge opening and filled into the wrapping bag, the cut nozzle is raised and the discharge opening 10B is extracted from the bag mouth. The wrapped bag filled with the filling is in a process of being carried out with the bag mouth sealed by the sealing device of the automatic bagging machine.

Next, the detailed operation of the cut nozzle will be described. When the cut nozzle is lowered by the vertical movement shaft, the piston rod of the air cylinder 15 is contracted to raise the piston 11. When the piston 11 rises, the supply port 10A and the discharge opening 10B communicate with each other. In this state, the filling pump (not shown) is operated, and the filling material is fed into the supply port 10A through the hose. The filling material fed to the supply port 10A passes through the discharge passage 10C in the cylinder 10 and is discharged from the discharge opening 10B as indicated by an arrow.

In order to complete the filling, the operation of the filling pump is stopped, and at the same time, the piston rod of the air cylinder 15 is extended, the piston 11 is lowered, and the supply port 10A is moved to the piston 11 as shown in FIG. Close with.

Since the pin 22 fixed to the cylinder 10 is engaged with a spiral guide groove 21 formed on the outer peripheral wall of the piston 11, when the piston 11 is lowered, the inclined surface of the guide groove 21 is changed to the pin 22. A circumferential rotational moment of the piston 11 is generated in pressure contact with the piston 11, and the piston 11 rotates as the piston 11 descends. In addition, since it will be in the same state also when the said piston 11 raises, it rotates, raising.

While the piston 11 is descending, the packing that passes through the supply port 10A and protrudes toward the discharge passage 10C from the supply port 10A is filled with the peripheral edge of the supply port 10A and the lower end of the piston 11. The filling is cut.

When the piston 11 descends while rotating, the piston 11 is combined with the motion of descending and rotating, and the solid matter in the liquid matter including the solid matter supplied from the supply port 10A is the lower end of the piston 11. Since the shape of the cutting at the periphery is cut and the relative speed of the periphery of the lower end with respect to the solid material is increased, the cutting of the filling becomes easier than a simple press cutting when the piston 11 is not rotated, and it is like a squid skin. Even if it is difficult to cut, it can be cut reliably.

When the piston 11 is further lowered, the communication between the supply port 10A and the discharge opening 10B is blocked.

The guide groove 21 is preferably formed so as to straddle the supply port 10 </ b> A so as not to contact the supply port 10 </ b> A, so that the filler does not enter the guide groove 21.

In the form for implementing the above invention, the spiral guide groove 21 is formed in the outer peripheral wall of the piston 11, and the cylinder 22 is provided with the pin 22 projected from the outside of the cylinder 10 into the discharge passage. It has been. However, it goes without saying that the same effect can be expected even when the piston 11 is provided with the pin 22 and the guide groove 21 is formed in the cylinder 10, which is the opposite configuration.

DESCRIPTION OF SYMBOLS 10 Cylinder 10A Supply port 10B Discharge opening 10C Discharge passage 11 Piston 15 Air cylinder 16 Joint 17 Support body 21 Guide groove 22 Pin

Claims (1)

A cylinder in which a discharge opening is formed at the lower end and a supply port for a filler communicated with the discharge passage is formed; a piston that is movable up and down in the discharge passage;
A drive source for raising and lowering the piston;
A cut nozzle with
A guide groove is formed on either the cylinder or the piston,
A cut nozzle comprising a piston or a cylinder corresponding to the guide groove provided with a pin that engages with the guide groove.

Images