JPS6135810B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an apparatus for automatically and quantitatively filling a large amount of fish and meat, particularly ground or ground fish meat, ground meat, ground meat, etc., with high precision.

Conventionally, a screw feeder has a screw feeder in which a pair of screw shafts with screws in opposite directions are arranged side by side at the bottom of a hopper having an opening at the top, a gear pump connected to the outlet end of the screw feeder, and a filling pump connected to the discharge side of the gear pump. A tube, a means for forming a film into a packaging tube outside the filling tube and feeding it in the direction of raw material discharge, and a means installed horizontally in front of the means and opening and closing intermittently while rotating in the direction of feeding of the packaging tube. A quantitative filling device for fish and animal meat is known, which is equipped with a handling roller that continuously operates a screw feeder and a gear pump to continuously discharge raw materials into a filling pipe, and a roller that handles this continuous raw material. When closing, the material was measured by handling it by approaching rollers to divide the filling material into sections of a certain length, so that the feeding speed of the package filled with the material was strictly constant, and If the raw material is discharged at a constant rate, the segment length will be completely constant, the density of the raw material within the segment length will be constant, and highly accurate quantification should be possible. However, the amount of raw material for packaging decreases as it is used, and the weight and inertia change due to the lack of use, resulting in variations in feeding speed. Since it accumulates in the compartment and prevents a certain amount from being discharged into this compartment, it is inevitable that errors will occur in the filling amount.This phenomenon increases as the viscosity of the raw material increases, and it continues to increase. When handling and sorting discharged raw materials, the raw materials that are dammed up behind the handling rollers accumulate, causing the package to swell, and there is a large difference in packing density and irregular shapes between the front and rear parts of the sorting. This not only causes problems when making frozen bread in the subsequent process or inserting it into the exterior packaging, but also when handling the filled ingredients to create a void in the packaging tube and performing heat-pressure sealing of the packaging tube in this area. However, the packaging body was contaminated with raw materials, which hindered sealing and resulted in poor sealing.

The present invention was developed in consideration of the above-mentioned drawbacks, and employs a metering method in which the discharge is stopped and the raw material is cut each time a certain amount of raw material is discharged, and the metering error is 1% for 10 kg, for example. It is an object of the present invention to provide an apparatus that does not cause local density differences or shape defects, and can also seal packages well.

The present invention will be explained below based on embodiments shown in the drawings. A is a screw feeder, which has a hopper 2 with an opening 1 at the top for feeding raw materials, and a pair of screw shafts 4 with screws 3, 3 formed in opposite directions at the bottom of the hopper 2.
4 is arranged on an upward slope, and the screw shafts 4, 4 are rotated in opposite directions by transmitting the rotation of the motor 5 through interlocking gears 6, 6, and the input raw material is forcedly fed and sent out from the outlet 7. It is arranged like this. Reference numeral 8 denotes a gear pump connected to the outlet 7 of the screw feeder A, which rotates a pair of precisely meshed gears 9, 9 in opposite directions to forcefully push out a fixed amount of raw material sent from the screw feeder A through the discharge port 10. Reference numeral 11 denotes a filling pipe connected to the discharge port 10 of the gear pump 8, and its cross-sectional shape changes from a circle to an ellipse to a rectangle so that the raw material to be extruded becomes a plate. B is a means for forming and feeding the packaging tube 12, in which an original roll 14 of the film 13 is placed below the filling tube 11, and the film 13 is unloaded from this original roll 14.
The film 13 is pulled out and hung on a forming bar 15 provided so as to surround the filling tube 11, and the film 13 is formed into a cylindrical shape so that the edges overlap on the upper side of the filling tube 11. film 1
Weld the overlapping edges of No. 3 while traveling to form packaging tube No. 1.
A pair of rollers 17 are disposed on the downstream side of the heat sealer 16 and rotate in the direction in which the raw material advances in contact with the packaging cylinder 12 to feed the packaging cylinder 12 in accordance with the progress of the raw material. 17 are provided, and these rollers 17, 17 are slightly deflected toward the center on the downstream side of the flow so that the packaging tube 12 is molded in close contact with the filling tube 11. A motor 18 drives the gear pump 8, and is connected to the gear pump 8 via a reduction gear 19 and a clutch brake unit 20. C is a means for regulating the filling amount of raw material by the gear pump 8, and the gear pump 8 is used when the gear pump 8 discharges a predetermined raw material.
Measure the number of revolutions of the gear pump 8, set this number of revolutions to the pulse counter 21, etc., and turn the gear pump 8 by this set number.
When the controller 22 rotates, the counter 21
A signal is sent to the clutch brake unit 20 to stop the gear pump 8 and stop the raw material discharge. Reference numeral 23 denotes a raw material cutting blade provided at the lower front side of the filling tube 11, and its both ends are supported by guides 24, 24 so that the gap between it and the opening in the filling tube 11 is slightly larger than the thickness of the packaging tube 12. and install the cylinder 25 at the lower center,
With this cylinder 25, the cutting blade 23 is lowered while the raw material is being discharged, and when the raw material has stopped being discharged, the cutting blade 23 is raised to cut only the filling raw material inside without cutting the packaging cylinder 12. has been crushed. Reference numeral 26 denotes a belt conveyor provided in front of the cutting blade 23, and is stretched horizontally so that its upper surface matches the lower surface of the raw material discharged from the filling tube 11. Reference numeral 27 denotes a carriage conveyed by the belt conveyor 26, and rollers 29, 29 are provided above and below on both sides of the carriage to roll guides 28, 28 parallel to the belt conveyor 26. are two receiving rollers 3 provided at a predetermined interval.
A part of the belt conveyor 26 is pressed down between 0 and 30 by a presser roller 31 to form a recess 32 in which a sealing stand to be described later is accommodated. D is a sealing means for sealing the packaging cylinder 12 installed on the carriage 27, and a pair of vertical guides 33, 33 are provided on the carriage 27, sandwiching the belt conveyor 26. At the bottom of the guides 33, 33, A seal stand 35 is attached to the slides 34, 34 at both ends, and a heater 37 is attached to the upper end by slides 36, 36 so as to be able to rise and fall freely. At both ends of the seal stand 35 and the heater 37, there are rods 38 with both ends bent into hook shapes. , 39 are connected, and the upper ends of the rods 38 and 39 are connected to opposing cranks 41 and 42 rotated by rotary actuators 40 and 40.
When one of the rods 1 and 42 is rotated, one of the rods 38 rises and pulls up the sealing stand 35, and the other rod 39 descends, pushing down the heater 37 and clamping the packaging tube 12, and the other rotation causes the rod 38 to descend. When the seal stand 35 is pushed down, the rod 39
is raised, and the heater 37 is pulled up to free the packaging cylinder 12. 43 is a cutting blade of the packaging tube 12 attached to the front side of the heater 37;
When sealing is performed by sandwiching the packaging cylinder 12 between the sealing plate 7 and the sealing stand 35, it engages with a receiving blade 44 attached to the front side of the sealing stand 35 to cut the packaging cylinder 12. 4
5 is a belt conveyor 26 between the presser roller 31 and
A jig cylinder 46 is provided below the belt conveyor 26 and a jig cylinder 47 is provided at a position to clamp the rod 47.
a cylinder connected to the carriage 27,
When the carriage 27 moves forward together with the belt conveyor 26 by sandwiching the packaging cylinder 12 between the cylinder 46, the heater 37, and the seal stand 35, the
Jig cylinder 45 reciprocating table 27 is belt conveyor 2
The belt conveyor 26 is sandwiched between the press roller 31 and the belt conveyor 26 so as to move forward together with the belt conveyor 6, and
When the heater 37 and the seal stand 35 are separated from the packaging cylinder 12, the jig cylinder 45 is moved to the belt conveyor 26.
The cylinder 46 operates in the opposite direction to the belt conveyor 26, returning the carriage 27 to its home position.
48 is a motor that drives the belt conveyor 26;
The rotation is appropriately adjusted by the reducer and transmission 49 and transmitted to the conveyor roller 51 by the chain 50, and the rotation is transmitted to the feeding rollers 17, 17 of the packaging cylinder 42 by the reverse gears 52, 53 and the chain 54. The rollers 17, 17 are then rotated at the same circumferential speed as the belt conveyor 26. Reference numeral 55 denotes a raw material returning means provided in the screw feeder A, which uses the gap between the hopper 2 and the screws 3, 3 in the screw feeder A to return some of the raw material while the gear pump 8 is stopped, and returns the raw material to the outlet of the feeder A. It functions to keep the pressure constant both when the pump 8 is running and when it is stopped, and the outlet 10 and hopper 2 are connected as necessary.
They may also be connected by a return pipe.

Therefore, according to the above-mentioned configuration, the raw material that is input into the hopper 2 of the screw feeder A, is forced to be fed by the screws 3, 3, and reaches the gear pump 8, is pushed out by the gear pump 8 to the filling pipe 11, and is pushed out to the outside of the filling pipe 11. is supplied from a raw fabric 14, formed into a cylinder by a forming bar 15, and then heated with a heat sealer 1.
6, the packaging tube 12 with the overlapping part welded is fed, so the packaging material is delivered from the filling tube 11 to the belt conveyor 26 in front of it, and when this material reaches the amount set in the regulating means C. , the counter 21 in the regulating means C detects this and temporarily stops the gear pump 8. At this time, the cutting blade 23 is driven by the cylinder 25 and rises with a gap slightly larger than the thickness of the packaging tube 12 between the front surface of the filling tube 11 and the opening end, so the packaging tube 12 is not cut. , the raw material in the packaging cylinder 12 is cut. When the raw material is cut in this manner, the cutting blade 23 returns to its original position, so that the cut raw material is conveyed by the belt conveyor 26. However, since extrusion of the raw material has not yet been resumed, an empty portion is formed in the packaging tube 12 that is not filled with raw material. When this empty length reaches a certain length, a known timer (not shown in the drawings) is activated to restart the operation of the gear pump 8 and extrude the raw material. Rotary actuator 40, 4
0 and the jig cylinder 45 operate, the rod 38 pulls up the seal stand 35, the rod 39 pushes down the heater 37, and at the same time, the empty part of the packaging tube 12 is held between the two on the upstream side, and the carriage 27 is moved. It moves forward together with the belt conveyor 26, applies heat and pressure to the packaging cylinder 12, and engages the cutting blade 43 with the receiving blade 44 to cut the packaging cylinder 12.
Therefore, when the series of packaging cylinders 12 are separated and sealed upstream of the separation position and the bag bottom is formed by this seal, another known timer is activated and the rotary actuator 40,
40 is reversely rotated, and the sealing stand 3 is removed by the rod 38.
5 is pushed down, the heater 37 is pulled up by the rod 39, and these are separated from the packaging tube 12. At the same time, the jig cylinder 45 returns and the forward movement of the carriage 27 is stopped, and the cylinder 46 is operated instead to move the carriage 27. Return to normal position. At this time, a set amount of the next raw material is filled into the packaging tube 12 by the gear pump 8, and the regulating means C detects this, stops the pump 8, and operates the cutting blade 23 to remove the raw material in the packaging tube 12. Since an empty part is being created in the packaging cylinder 12 while cutting and measuring the raw material, the sealing stand 3 in the sealing means D of the carriage 27 returned by the cylinder 46
5 and the heater 37 operate in the same manner as described above, sandwiching and hot-pressing the empty portion of the packaging tube 12, and the cutting blade 43 meshing with the receiving blade 44 to cut the packaging tube 12 downstream of the portion being sealed. Therefore, the previously filled raw material is sent out by the conveyor 26, and the heat-pressing part of the packaging cylinder 12 is sealed to form the bag bottom. The heater 37 is moved away from the packaging cylinder 12 and returned to its normal position by the carriage 2, and the packaging cylinder 12 is formed on the upstream side of the raw material cut by the pump 8 and the cutting blade 23.
Since the operation of sealing and cutting is repeated while holding and moving the empty part of the packaging cylinder 12, it is possible to continuously and automatically fill the packaging cylinder 12 with raw materials while creating the required empty part.

However, this device controls the operation of the highly quantitative gear pump 8 by the regulating means C to accurately determine the discharge amount of the pump 8, and also controls the screw feeder A.
A part of the raw material is returned to the hopper 2 by the return means 55 when the gear pump 8 is stopped, so that even when the pump 8 is stopped, the same pressure as during operation and feeding is applied to the outlet of the feeder A. Since the density of the raw material is kept constant, the filling amount is extremely accurate. For example, for a filling amount of 10 kg, the standard deviation of the amount error is 30 g.
An extremely excellent quantitative accuracy was obtained.

As mentioned above, the apparatus according to the present invention supplies the raw material to the screw feeder, sends it under pressure to the gear pump, and the gear pump discharges a fixed amount into the packaging cylinder which is fed to the filling pipe. When the pump stops and the discharged raw material is cut off by the regulating means, the operation of filling a fixed amount of raw material into the packaging cylinder is automatically and efficiently carried out. Since an unfilled part of the raw material is formed, unlike conventional equipment that handles the raw material once filled to create an unfilled part, the process and equipment for handling the raw material can be omitted, making it extremely economical and cost-effective. Since part of the paste-like raw material, oil, fat, and moisture do not adhere to the filling part, the subsequent sealing operation can be performed quickly and completely, and a very good filling and packaging form can be obtained.

In addition, since this device is equipped with a means for returning the raw material to the screw feeder, even if the gear pump is operated intermittently and suction of the raw material is stopped while the screw feeder is in continuous operation, the returning means will return some of the raw material. In other words, since the input pressure of the pump is kept constant, the pump does not produce a difference in discharge volume due to fluctuations in input pressure, and always fills a constant amount into the packaging cylinder, so the quantitative accuracy of filling is The weight difference was extremely high, and an excellent effect was exhibited, such as being able to suppress the weight difference to within 50g for a filling amount of 10kg.

[Brief explanation of the drawing]

The drawings show an example of the implementation of the device related to the present invention, and FIG. 1 is a side view. Figure 2 is a plan view. Third
The figure is a partially enlarged sectional view showing the release means of the screw feeder. FIG. 4 is a front view of the sealing means. FIG. 5 is a side view of the same as above. FIG. 6 is a central vertical sectional side view. In the figure, A is Scryufida, 2 is Hoppa, 3,
3 is a pair of screws, 7 is an outlet, 8 is a gear pump, 11 is a filling pipe, B is a feeding means for the packaging tube 12,
C is a filling amount regulating means, and 55 is a raw material return means.

Claims (1)

[Claims] 1. A screw feeder in which a pair of screw shafts with opposite screws are arranged in parallel at the lower part of a hopper having an opening at the top, a gear pump connected to the outlet end of this screw feeder, and a filling pipe connected to the discharge side of the gear pump. , a means for forming a film into a packaging tube outside the filling tube and feeding it in the extrusion direction of the filling tube; a means for temporarily stopping the gear pump to regulate the filling amount; and a screw feeder while the gear pump is stopped. A quantitative filling device for fish and meat, characterized in that it is provided with a means for returning the raw materials sent.