JPH07108692B2 - Elevator for unloading provided inside the filling cylinder of the packaging machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention may damage lumps such as senbei, potato chips, and softly baked flour foods that are easily destroyed when dropped. The present invention relates to an unloading elevator provided inside a filling cylinder of a packaging machine provided with an elevator that can be loaded from the upper portion to the lower portion of the filling cylinder and dropped at the lower portion.

[Prior Art] Conventionally, when packing lumps such as senbay, potato chips, soft-baked flour foods, etc., which are easily destroyed when dropped, with a vertical bag-making filling and packaging machine, the length of the filling cylinder It was attempted to reduce the impact force of the lump by dropping it to suppress the destruction and fragmentation, but it was not possible to completely suppress it, and product defects were discharged.

In order to alleviate the impact force caused by falling of lumps and completely prevent destruction and fragmentation, it is conceivable to install an elevator inside the filling cylinder.Investigation of the unloading elevator inside the filling cylinder of the packaging machine Then, there was JP-A-63-307010.

[Problems to be Solved by the Invention] In the technique of Japanese Patent Laid-Open No. 63-307010, it is necessary to make the horizontal cross section of the filling cylinder oval, which results in an unnecessarily large bag width. However, since the elevator is configured like a bucket conveyor, it has many drawbacks such as a large number of parts, which is difficult to assemble, and food powder is liable to be adhered and cleaning is difficult.

The present invention, a lump such as senbei, potato chips, and softly baked flour foods that are easily destroyed when dropped, is loaded from the top to the bottom of a filling cylinder so that there is no risk of damage. An object of the present invention is to provide an unloading elevator that is provided inside a filling cylinder of a packaging machine that has an elevator that can be dropped at a lower portion inside the filling cylinder.

An object of the present invention is to provide a vertical bag-making filling and packaging machine equipped with an elevator that can be accommodated in a filling cylinder having the same size as the conventional one so that the bag width does not have to be made larger than necessary.

An object of the present invention is to provide an unloading elevator provided inside a filling cylinder of a packaging machine provided with an elevator having a small number of parts, a simple structure, and a low manufacturing cost.

It is an object of the present invention to provide an unloading elevator provided inside a filling cylinder of a packaging machine, in which food powder does not easily adhere to the elevator and the adhered powder can be easily cleaned.

[Means for Solving the Problem] A vertical bag-making filling and packaging machine provided with an elevator according to the present invention in a filling cylinder is an object to be packaged which is provided inside the filling cylinder 2 of the packaging machine and is inserted from the upper end of the cylinder. In a unloading elevator capable of unloading w to the lower part and dropping at the lower part, the two pipe shafts 6 passed through the inside front of the filling cylinder 2
And two shafts 7 which are passed through the respective pipe shafts 6 and whose upper and lower ends project, and an outer end 8a of the piston rod is connected to the upper ends of the two shafts 7 to raise and lower the shafts 7. A rodless cylinder 9 for supporting the upper end of the pipe shaft 6 with a piston-integrated table 9a to move the pipe shaft 6 up and down, and a cylinder tube 8b of the air cylinder 8 which is erected from the piston-integrated table 9a of the lotless cylinder 9. A bracket 10 for supporting the two pipe shafts 6, an elevating block 11 that connects the lower ends of the two pipe shafts 6 and occupies a small space on the front side in the cylinder of the filling cylinder 2, and one side is connected to the elevating block 11 and is horizontal. The flapper valve 12 that can substantially close the space not occupied by the lifting block 11 in the filling cylinder 2 when supported by the filling cylinder 2 and the lower ends of the two shafts 7 are connected to each other. When the cylinder 8 is contracted, the flapper valve 12 is supported so as to be horizontal, and when the air cylinder 8 is extended, the flapper valve 12 is separated from the lifting block 11 so that the flapper valve 12 can be opened by gravity. The lower support stopper 13 is provided.

[Operation] When the air cylinder 8 and the rodless cylinder 9 raise the pipe shaft 6 or the shaft 7, respectively, the flapper 12, which is supported by the flapper valve and supported by the stopper 13, is positioned above the filling cylinder 2 in a closed state. Therefore, when a predetermined amount of the object to be packaged w is put into the filling cylinder 2, it is received by the flapper valve 12. Then, the rodless cylinder 9 descends the piston-integrated table 9a to descend the pipe shaft 6 and the air cylinder 8, so that the shaft 7 also descends integrally.
The flapper valve 12 loads the articles to be packaged to the lower part of the cylinder. Then, the air cylinder 8 extends and the shaft 7 descends, so that the flapper valve lower support stopper 13 is separated from the elevating block 11, and the flapper valve 12 is inclined so as to hang down to be in an open state. Then, the object w to be packed falls and can be filled.

Therefore, the length of the filling cylinder 2 is excluded from the drop of the article to be packed, and the substantial drop becomes a gap from the lower portion of the filling cylinder 2 to the bag below the filling cylinder 2 and becomes extremely small. The shock received by the object to be packaged when the object w falls into the bag is suppressed to a sufficiently small level, and as a result, the lump, which is easily broken when dropped, is senbei, potato chips, or softly hardened. There is no risk of product destruction when targeting flour foods.

As an operation method different from the above operation, the piston integral table 9a of the rodless cylinder 9 may be lowered and the air cylinder 8 may be extended with a slight delay. By doing so, the flapper valve 12 opens while loading the articles to be packaged into the lower portion of the cylinder. Therefore, in this case, the filling cylinder 2
In the lower part of the package, the packaged object w will fall without stopping for a moment, but since moderate deceleration against natural fall is applied, the loading speed as a whole should be secured even in the case of the above operation. At the same time, the product can be filled while avoiding the product from being destroyed.

[Embodiment] The unloading elevator provided inside the filling cylinder of the packaging machine of this embodiment has been adopted for the vertical bag-making filling and packaging machine.

The vertical bag-making filling and packaging machine is connected to the hopper 1 and the lower side of the hopper 1 and is put into the hopper 1 (hereinafter referred to as a lump in the embodiment).
A filling cylinder 2 that constitutes a bag-making machine through which w is passed, and a bag-making machine that is provided so as to surround the upper part of the filling cylinder 2 and forms a bag-making machine together with the continuous packaging film F is guided to the rear side to form the filling cylinder 2. A sailor 3 that is wrapped and bent so that both edges are matched at the front side, and a vertical sealing device 4 that is provided on the front side of the filling package 2 and that heat-seals the edges together with the packaging film F.
And the packaging cylinder T fed out below the filling cylinder 2 into the packaging cylinder T
The horizontal sealing device 5 that heat-seals the upper and lower sides of the lump w filled in the inside, the paper pulling belt device 14 for feeding the film, and the lump w is received at the upper part of the filling cylinder 2 and lowered to the lower part. And an elevator E for dropping the automatic weighing machine S on the hopper 1.

Therefore, in a bag-making device composed of a combination of the filling cylinder 2 and the sailor 3, the continuous wrapping film F is guided from the rear to the sailor 3 to wrap the filling cylinder 2 and bent so that both edges are aligned on the front side. Is fed out, the edges of the packaging film F are vertically sealed (center seal) from the vertical sealing device 4 and fed as the packaging cylinder T below the filling cylinder 2, and horizontally sealed (ground sealing) by the horizontal sealing device 5 to form a bag. , A certain amount of lumps w
Is loaded into the filling cylinder via an elevator E provided in the filling cylinder 2, drops in the lower part of the cylinder to fill the bag, and a horizontal seal is applied to the upper side of the lump w of the packaging cylinder T ( Seal with heaven) and cut.

The elevator E includes two pipe shafts 6 that are passed through the front of the filling cylinder 2 in the cylinder, two shafts 7 that are passed through the pipe shafts 6, and an air cylinder 8 that raises and lowers the shaft 7.
A rodless cylinder 9 that raises and lowers the pipe shaft 6 and a raising and lowering block 11 that connects the lower ends of the two pipe shafts 6 to each other.
A flapper valve 12 pivotally mounted on the lifting block 11 and a flapper valve lower support stopper 13.

In order to pass the two pipe shafts 6 to the front side in the cylinder of the filling cylinder 2, the filling cylinder 2 integrally connects the anvil portion 2a which receives the seal pressing of the vertical sealing device 4 on the front side by the flange 2b at the upper end. Two vertically elongated guide slits from the lower end to the upper end on both sides of the anvil 2a
2c has an opened shape, and the hopper 1 is provided with a hole by closing the front portion of the upper end opening of the filling cylinder 2 with a flange.

The pipe shaft 6 is made of a stainless steel pipe and is passed through a hole formed in the flange of the hopper 1, and is further passed through the two guide slits 2a, and the rising position of the lower end of the pipe shaft is the upper portion of the filling cylinder 2. And the lowering position is located below the filling cylinder 2, and the lowering position of the upper end of the pipe shaft is located above the filling cylinder 2.

The shaft 7 is made of stainless steel, passes through the pipe shaft 6, and has an upper end and a lower end protruding.

The outer end 8a of the piston rod of the air cylinder 8 is connected to the upper ends of the two shafts 7, and the lower end of the shaft can be separated from the lower end of the pipe axis by the extension operation.

The rodless cylinder 9 supports the upper end of the pipe shaft 6 by the piston integrated table 9a and moves the pipe shaft 6 up and down. The air cylinder 8 is a bracket in which a cylinder tube 8b is erected from a piston integrated table 9a of a rodless cylinder 9.
Backed by 10. Therefore, the shaft 7 is moved up and down not only by the air cylinder 8 but also by the rodless cylinder 9. The elevating block 11 connects the lower ends of the two pipe shafts 6 and is fitted into two slits 2c formed in the front part of the filling cylinder 2 so as to protrude to the outer surface side of the filling cylinder 2 at the time of elevating as much as possible. It is guided so that it does not move, and has a size that occupies a small front space in the cylinder, and the upper surface is inclined and descends toward the center of the cylinder so that the object to be packaged slides down. One side of the flapper valve 12 is connected to the elevating block 11 on the front side of the device via a hinge 15, and when the flapper valve 12 is horizontally supported by the flapper valve lower support stopper 13, a space not occupied by the elevating block 11 in the filling cylinder 2 is formed. Can be substantially closed. FIG. 5 shows the flapper valve.
Twelve practical and preferred shapes are shown. The flapper valve 12 has straight sides on both sides, and a gap is provided between the flapper valve 12 and the inner surface of the filling cylinder 2. This is to provide a relief to compensate for the flapper valve 12 opening downward. The flapper valve lower support stopper 13 has two shafts 7
Is provided by connecting the lower ends of the air cylinder 8 to support the flapper valve 12 horizontally when the air cylinder 8 is contracted, and when the air cylinder 8 is extended, the flapper valve 12 is lifted and lifted so that the flapper valve 12 can be opened by gravity. Stay away from.

Then, the air cylinder 8 and the rodless cylinder 9 position the pipe shaft 6 or the shaft 7 in a raised position when the mass w is thrown into the hopper 1, and the flapper valve 12 is horizontally positioned in the upper part of the cylinder. The rodless cylinder 9 is driven downward to lower the pipe shaft 6 or the shaft 7 after the lump w has been placed on the flapper valve 12, and the air cylinder 8 extends a little later. The shaft 7 is configured to be lowered one step faster than the pipe shaft 6 which is being driven and is being lowered.

Next, the operation of this embodiment will be described with reference to FIGS.

FIG. 1 shows that the piston-integrated table 9a of the rodless cylinder 9 has stopped rising and the air cylinder 8 has stopped contracting, and the pipe shaft 6 and the shaft 7 respectively.
Is raised to the maximum upper limit position, and the flapper valve 12
Is supported by a flapper valve lower support stopper 13 and stopped horizontally in the upper part of the cylinder, to which a predetermined amount of lumps w weighed by the automatic weighing device S are dropped, and at the bottom, the packaging cylinder T is It is shown that the bag is laterally sealed (grounded) by the lateral sealing device 5.

FIG. 2 shows a state where the piston-integrated table 9a of the rodless cylinder 9 descends from the state of FIG. 1 and the air cylinder 8 extends a little later. As the piston-integrated table 9a descends, the air cylinder 8 descends integrally, so that the pipe shaft 6 and the shaft 7 descend together, and the air cylinder 8 extends a little later. As the shaft 7 descends relative to the pipe shaft 6, the flapper valve lower support stopper 13 separates from the flapper valve 12, and the flapper valve 12 opens while descending.

In FIG. 3, the flapper valve 12 stops descending to the open state, the lump w is filled in the bag, and the rodless cylinder 9 continues.
It is shown that the piston-integrated table 9a of FIG. 1 starts to move upward and the air cylinder 8 starts to contract.

FIG. 4 shows that the piston-integrated table 9a of the rodless cylinder 9 rises and returns, the air cylinder 8 contracts and returns, the pipe shaft 6 and the shaft 7 rise and return to the uppermost position, and the automatic weighing machine S performs weighing. It is shown that while waiting to receive the falling lumps, the paper pulling belt device 14 is driven and the packaging cylinder T is lowered by the length of one bag.

[Peripheral range of the present invention] The present invention is also applied to a bag-filling and packaging machine.

[Effects] As described above, according to the unloading elevator provided inside the filling cylinder of the packaging machine according to the present invention, the sembei, potato chips, and soft baking that are easily destroyed when dropped. Agglomerates such as hardened wheat flour foods can be stacked from the upper part to the lower part of the filling cylinder so as not to be damaged, and can be dropped at the lower part.

Since the shaft is passed through the pipe axis and is vertically movable inside the filling cylinder, it is possible to use a filling cylinder of the same size as the conventional one, and it is not necessary to increase the diameter of the filling cylinder in the conventional case. It is not necessary to take the width larger than necessary.

The number of parts is small, the structure is simple, the assembly is easy, and the manufacturing cost can be kept low.

An air cylinder is installed on the rodless cylinder piston integrated table and these are installed on the filling cylinder, so the height of the packaging machine can be prevented from increasing significantly and it is suitable for installation in a factory with a low ceiling. it can.

The powder to be packaged is hard to be attached, and the attached powder can be easily washed off with a jet water stream. Further, during cleaning, the pipe shaft, shaft, flapper valve, etc. can be easily removed, and complete cleaning can be easily performed.

A flapper valve is used, which, unlike a butterfly valve, can secure a large drop passage and does not have a risk of clogging the object to be packaged.

[Brief description of drawings]

The drawing relates to an embodiment in which the unloading elevator provided in the filling cylinder of the packaging machine of the present invention is applied to a vertical bag-making filling and packaging machine, and FIG. FIG. 2 is a vertical sectional side view showing a state in which the objects to be packaged are being unloaded, FIG. 3 is a vertical sectional side view showing a state in which the objects to be packaged are dropped and filled, and FIG. FIG. 4 is a vertical sectional side view showing a state of waiting for loading of a packaged item, and FIG.
It is a VV sectional view in the drawing. w ...... Item to be packaged, 2 ... Filling cylinder, 6 ... Pipe shaft, 7 ... Shaft, 8 ... Air cylinder, 8a ... Piston rod outer end, 8b ... Cylinder cylinder, 9 ... Rodless Cylinder, 9a …… Piston integrated table, 10 …… Bracket, 11 …… Lift block, 12 …… Flapper valve, 13 …… Flapper valve lower support stopper,

Claims (1)

[Claims] 1. An unloading elevator, which is provided inside a filling cylinder of a packaging machine and which is loaded from the upper end of the cylinder, can be laid down to a lower part and dropped at the lower part. Two pipe shafts passed through,
Two shafts that are passed through each pipe shaft and project at the upper and lower ends, an air cylinder that connects the upper ends of the piston rods to the upper ends of the two shafts and moves the shafts up and down, and the upper end of the pipe shafts. A rodless cylinder that is supported by a piston-integrated table and moves up and down the pipe shaft, a bracket that stands upright from the piston-integrated table of the rodless cylinder and that supports the cylinder cylinder of the air cylinder, and the lower ends of the two pipe shafts. An elevating block which is connected and occupies a small space in the front side of the filling cylinder, and a void which is connected to the elevating block on one side and which is not occupied by the elevating block in the filling cylinder when horizontally supported. The flapper valve to be obtained and the lower ends of the two shafts are connected to each other, and the flapper valve is made horizontal when the air cylinder is contracted. And a flapper valve lower support stopper that separates from the elevating block so that the flapper valve can be opened by gravity when the air cylinder is extended. An unloading elevator provided inside.