JPH0314407A - Unloading elevator provided inside charging cylinder of packaging machine - Google Patents

Abstract

PURPOSE:To drop lump shaped objects, which are easily broken by dropping, at the lower part of a charging cylinder so that there is no fear of damage, and make the structure possible, for which a bag width does not become unnecessarily larger, and the number of components is small by a method wherein a pipe shaft, in which a shaft is placed, is provided on the inside of the charging cylinder, to be free to elevate, and also a flap valve is adopted. CONSTITUTION:When an air cylinder 8 and a rodless cylinder 9 respectively raise a pipe shaft 6 or a shaft 7, a flap valve 12, which is supported by a stopper 13 from the bottom, positions at an upper part of a charging cylinder 2, under a closed valve condition. When a prescribed quantity of objects W to be packaged are fed in the charging cylinder 2, they are received by the flap valve 12. Then, the cylinder 9 lowers a one piece piston/table 9a to lower the pipe shaft 6 and the air cylinder 8, and the shaft 7 also descends in one piece, and the flap valve 12 lowers the objects to be packaged to a lower part in the filling pipe. Then, the air cylinder 8 extends, and the shaft 7 descends, and the stopper 13 separates from an elevating block 11. By this motion, the flap valve 12 tilts to give an opened valve condition, and the objects to be packaged W drop.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention is designed to remove lumps such as senbei, potato chips, and soft baked flour foods that are easily destroyed when dropped, without the risk of breakage. This invention relates to an unloading elevator installed inside a filling cylinder of a packaging machine, which is equipped with an elevator inside the filling cylinder that can unload the filling cylinder from the top to the bottom and drop it at the bottom so that the filling cylinder is not damaged. [Prior art] Conventionally, when packaging lumps such as senbei, potato chips, and soft baked flour foods that are easily destroyed when dropped, using a vertical form-fill-fill packaging machine, the length of the filling cylinder By reducing the size of the block, the impact force caused by falling lumps was reduced and the breakage into small pieces was suppressed, but this could not be completely suppressed, resulting in product defects. In order to alleviate the impact force caused by falling lumps and completely prevent breakage and fragmentation, it is possible to install an elevator inside the filling cylinder, and we investigated the unloading elevator installed inside the filling cylinder of a packaging machine. When I did that, I found the special [Kawasho 63-307010]. [Problems to be Solved by the Invention] In the technique of JP-A-63-307010, it is necessary to make the horizontal cross section of the filling cylinder into an oval shape, which results in making the bag width larger than necessary. Furthermore, because the elevator is constructed like a packet conveyor, it has many parts and is difficult to assemble, and furthermore, food particles tend to adhere to it, making it difficult to clean. The present invention is designed to prevent lumps such as senbei, boiled chips, and soft baked flour foods, which are easily destroyed when dropped, from the 12th part to the lower part of the filling cylinder, without the risk of damage. It is an object of the present invention to provide an unloading elevator that is installed inside a filling cylinder of a packaging machine, which is equipped with an elevator in the filling cylinder that can unload and drop the load at the lower part thereof.

SUMMARY OF THE INVENTION An object of the present invention is to provide a vertical bag-forming-fill-sealing machine equipped with an elevator that can accommodate a filling cylinder of the same size as a conventional one so that the width of the bag does not need to be increased more than necessary. ．． SUMMARY OF THE INVENTION An object of the present invention is to provide an unloading elevator that is installed inside a filling cylinder of a packaging machine and is equipped with an elevator that has a small number of parts, a simple structure, and can keep production costs low. SUMMARY OF THE INVENTION An object of the present invention is to provide an unloading elevator installed inside a filling cylinder of a packaging machine, which prevents food powder from adhering to the elevator and allows easy cleaning of the adhering powder. [A Thousand Steps to Solve the Problem] A vertical bag-forming-fill-sealing machine equipped with an elevator in a filling cylinder according to the wooden invention is provided inside a filling cylinder 2 of the packaging machine, and the packaged material is loaded from the top end of the cylinder. In an unloading elevator that can load objects W to a lower part and drop them at the lower part, two pipe shafts 6 are passed through the front side of the inside of the filling cylinder 2, and an upper end is passed through each pipe shaft 6. and two shafts 7 whose lower ends protrude, and an air cylinder 8 whose outer end 8a of a piston rod is connected to the IZ ends of the two shafts 7 and which raises and lowers the shafts 7.
and the upper end of the pipe shaft 6 is connected to the piston-integrated table 9a.
a rodless cylinder 9 that supports the pipe sleeve 6 at 'yI R', a bracket 10 that is erected from the piston-integrated table 9a of the rodless cylinder 9 and supports the cylinder tube 8b of the air cylinder 8; A lift block 11 connects the lower ends of the pipe shafts 6 to each other and occupies a small space in front of the cylinder of the filling cylinder 2.One side is connected to the lift block l1, and when supported horizontally, the lift block 11 occupies a small space at the front of the cylinder of the filling cylinder 2. A flapper valve l2 that can substantially close the gap not occupied by the lifting block 11 is provided by connecting the lower ends of the two shafts 7 to each other so that the flapper valve 12 becomes horizontal when the air cylinder 8 is contracted. and a flapper valve lower support stop 13 spaced apart from the lifting block 11 so that the flapper valve l2 can be opened by the action of gravity when the air cylinder 8 is extended. It is something. [Operation] When the air cylinder 8 and the rodless cylinder 9 raise the pipe sleeve 6 or the shaft 7, respectively, the flapper valve 12 supported by the flapper valve support stopper l3 is located in the closed state at the upper part of the filling cylinder 2. Therefore, when a predetermined amount of the material to be packaged W is put into the filling cylinder 2, the flapper valve l
2 is accepted. Then, the rodless cylinder 9 lowers the piston-integrated table 9a, lowers the pipe shaft 6 and the air cylinder 8, and accordingly, the shaft 7 also lowers together, and the flapper jf 1 2 stacks the packaged items to the bottom of the cylinder. - You will be asked to do so. Subsequently, the air cylinder 8 is extended.
Then, the shaft 7 descends, and as a result, the flapper valve support stopper l3 moves away from the lifting block 1l, and the flapper valve 12 hangs down and becomes open, causing the packaged object W to fall. , filling can be done. Therefore, the length of the filling cylinder 2 is excluded from the head of the object to be packaged, and the actual head is the gap from the bottom of the filling cylinder 2 to the bag below the filling cylinder 2, which is extremely small. The shock that the packaged item W receives when it falls into the bag is suppressed to a sufficiently low level, and as a result, the lumps such as senbei, potato chips, and soft (hardened by baking) are easily destroyed when dropped. There is no need to worry about product destruction when used with flour foods, etc. In addition, as an operation method different from the above operation, the piston-integrated table 9a of the rodless cylinder 9 may be lowered, and the air cylinder 8 may be lowered with a slight delay. In this way, the flapper valve l2 opens while loading and unloading the packaged items into the lower part of the cylinder. Therefore, in this case, the packaged items W will fall without stopping at the bottom of the filling cylinder 2, but since an appropriate deceleration is applied to the natural fall, the overall unloading speed will be reduced. It is possible to fill the product with a larger amount than in the case of the above operation and avoid product destruction. [Example] The loading and unloading elevator provided inside the filling cylinder of the packaging machine in this example is shown as one adopted in a vertical bag-forming-filling-sealing machine. The vertical form-fill-fill-seal machine has a hopper 1 connected to the lower side of the hopper 1, and an object to be packaged (hereinafter referred to as a lump in the examples) that is put into the hopper 1.
A filling cylinder 2 that constitutes a bag-making device through which W is passed, and a filling cylinder 2 that is provided so as to surround the upper part of the filling cylinder 2 and that constitutes a bag-making device together with the filling cylinder and that a continuous packaging film F is guided from the rear and filled into the filling cylinder 2.
a vertical sealing device 4 that is installed on the front side of the filling cylinder 2 and heat-seals the edges of the packaging film F so that the edges of the packaging film F are brought together on the front side;
A horizontal sealing device 5 that heat-seals the upper and lower sides of the packaging tube T fed out downwardly of the filling tube 2 with the lumps W filled inside the packaging tube T, and a paper pulling belt device 14 that feeds out the film. , an elevator E that receives the lumps W at the upper part of the filling cylinder 2 and lowers them to the lower part, and an automatic measuring device S is provided above the hopper 1. Therefore, in a bag making machine consisting of a combination of the filling cylinder 2 and the sailor 3, a continuous packaging film Ft is introduced from the rear to the sailor 3, wrapped around the filling cylinder 2, and bent so that both edges meet at the front side. The edges of the packaging film F are vertically sealed (center sealed) by the vertical sealing device 4, and fed out to the bottom of the filling tube 2 as a packaging tube T. The packaging film F is horizontally sealed (ground sealed) by the horizontal sealing device 5 to form a bag. , filled cylinder 2 with a predetermined amount of lumps W
The filling cylinder is unloaded via an elevator E installed inside the cylinder, falls at the bottom of the cylinder and is filled into the bag, and the upper side of the lump W of the packaging cylinder T is horizontally sealed (top seal). Cut. The elevator E includes two pipe shafts 6 passed through the front side of the inside of the filling cylinder 2, two shafts 7 passed through each pipe shaft 6, and an air cylinder 8 for raising and lowering the shafts 7.
A rodless cylinder 9 that raises and lowers the pipe shaft 6, a lifting blower 1l that connects the lower ends of the two pipe shafts 6, and a flapper valve l2 that is pivotally connected to the lifting block 11.
and a flapper valve lower support stopper l3. In order to pass the two pipe shafts 6 into the front side of the inside of the filling cylinder 2, the filling cylinder 2 has an anobile portion 2a that receives the seal pressure of the vertical sealing device 4 on the front side connected integrally by a flange 2b at the upper end. The anvil portion 2a is left in the state
It has a shape in which two longitudinal guide slits 2C are opened from the lower end to the upper end on both sides of the hopper.
The front part of the upper opening of the filled cylinder 2 is closed with a flange, and a hole is provided. The pipe shaft 6 is made of stainless steel and passes through a hole drilled in the flange of the hopper 1, and is further passed through the two guide slits 2a, so that the lower end of the pipe shaft is in the raised position of the filled cylinder 2. The upper and lowered position is located at the lower part of the filled cylinder 2, and the lowered position of the upper end of the pipe shaft is located above the filled cylinder 2. The shaft 7 is made of stainless steel, passes through the pipe shaft 6, and has upper and lower ends protruding. In the air cylinder 8, the outer end 8a of the piston rod is connected to the upper ends of the two shafts 7, and the lower end of the shaft can be separated downward from the lower end of the pipe shaft by an extension operation. The rodless cylinder 9 supports the upper end of the pipe shaft 6 with a piston-integrated table 9a and moves the pipe shaft 6 up and down. In the air cylinder 8, the cylinder tube 8b is supported by a bracket 10 that is erected from the piston integrated table 9+1L of the rodless cylinder 9. Therefore, the shaft 7 is not only raised and lowered by the air cylinder 8 but also by the rodless cylinder 9. The lifting block 11 has two sleeves 2G that connect the lower ends of the two pipe shafts 6 and are provided at the front of the filling cylinder 2.
It is guided so that it does not protrude even slightly to the outside of the filling cylinder 2 when it is raised or lowered, and is sized to occupy a small space on the front side of the cylinder, with the upper surface part where the packaged items are It slopes downward toward the center of the cylinder as if sliding down.
The flapper valve 12 is connected to the lift block 11 via a hinge 15 on one side on the front side of the device, and when it is supported horizontally by the flapper valve support stopper l3, it fills the gap not occupied by the lift block 11 in the filling cylinder 2. Can be virtually closed. In FIG. 5, a practical and preferred shape of the flapper valve 12 is shown. The flapper jF 1 2 is
Straight sides are provided on both sides, and a gap is provided between them and the inner surface of the filling cylinder 2. This is to provide relief to compensate for the flapper valve l2 opening in a drooping manner. The flapper valve support stopper 13 is provided by connecting the lower ends of the two shafts 7, and supports the seventh flapper valve l2 horizontally when the air cylinder 8 is contracted, and also supports the flapper valve 12 when the air cylinder 8 is extended. is separated from the lifting block l1 so that the valve can be opened by the action of force. The air cylinder 8 and the rodless cylinder 9 are arranged so that when the lump W is thrown into the hopper 1, the cylinder 9 raises the pipe shaft 6 or the shaft 7, respectively, and the flapper valve 12 is placed horizontally in the upper part of the cylinder. After the lump W gets on the flapper valve l2, the rodless cylinder 9 is driven downward to lower the pipe shaft 6 or shaft 7, and after a short delay, the air cylinder 8 is moved downward. The shaft 7 is configured to be extended and driven to lower the shaft 7 one step faster than the descending pipe shaft 6. Next, the operation of this embodiment will be explained with reference to Figures L to 4. In the IF diagram, the piston-body table 9a of the rodless cylinder 9 has stopped rising, the air cylinder 8 has stopped shrinking, and the pipe shaft 6 or shaft 7 has been raised to the maximum position, so that The flapper valve L2 is supported by a flapper valve support stopper l3 and is stopped horizontally at the upper part of the cylinder, into which a predetermined amount of lump W measured by an automatic measuring device S is dropped, and at the bottom, FIG. 2 shows the packaging cylinder T being horizontally sealed (base-sealed) by the horizontal sealing device 5 to form a bag. FIG. This shows the state in which the air cylinder 8 expands with a slight delay as it descends. As the piston-integrated table 9a descends, the air cylinder 8 also descends together, so the pipe shaft 6 and shaft 7 descend together, and after a short delay, the air cylinder 8 extends. As you go, Shafu 1.
7 is lowered relative to the pipe shaft 6, and the flapper valve lower support stopper l3 is separated from the flapper jp 1 2, so the flapper valve l2 opens while lowering. FIG. 3 shows that the flapper valve 12 is in the open state and the bag is filled with lumps W when the flapper valve 12 is in the open state and stops moving downward +LL. is shown starting to shrink. Fig. 4 shows that the piston-body table 9a of the rodless cylinder 9 returns to its upward position, the air cylinder 8 returns to its contracted position, the pipe shaft 6 and the shaft 7 return to their upper limit positions, and the automatic measuring device S measures the weight. The paper-pulling belt device 14 is driven to lower the packaging cylinder T by the length of one bag. [Peripheral Scope of the Present Invention] The present invention is also applied to a bag-feeding, filling-packaging machine.

[Effect] As explained above, according to the unloading elevator provided inside the filling cylinder of the packaging machine according to the present invention, It is possible to load lumps such as baked and hardened flour foods from the top to the bottom of a filling cylinder and drop them at the bottom without risk of damage. ■Since the shaft is inserted into the pipe shaft and is installed inside the filling cylinder so that it can be raised and lowered, it is possible to use a filling cylinder of the same size as before, and there is no need to increase the diameter of the filling cylinder compared to the conventional one. , there is no need for the bag width to be larger than that of the divine spirit. ■The number of parts is small, the structure is simple, and assembly is easy, keeping production costs low. ■Since the air cylinder is installed on the piston-integrated table of the rodless cylinder, and these are installed on top of the filling cylinder, the height of the packaging machine can be kept from increasing significantly, making it suitable for factories with low ceilings. Can be installed. ■It is difficult for powder to adhere to the packaged items, and any powder that does adhere can be easily washed away with a jet of water. Furthermore, when cleaning the pipe, the pipe shaft, shaft, flat valve, etc. can be easily removed, making complete cleaning easy. A 〈Φ flapper valve is used, which, unlike a flapper valve, can secure a large drop passage and eliminates the risk of the packaged items becoming clogged.

[Brief explanation of the drawing]

The drawings relate to an embodiment in which the loading/unloading elevator provided inside the filling cylinder of the packaging machine of the present invention is applied to a vertical bag-forming-filling packaging machine. Fig. 2 is a longitudinal side view showing the loading state, Fig. 2 is a longitudinal side view showing the state in which the objects to be packaged are being unloaded, Fig. 3 is a longitudinal side view showing the state in which the objects to be packaged are dropped and filled, Fig. 4 5 is a vertical side view showing the state in which the packaged items are waiting to be loaded, and FIG.
It is a v-■ cross-sectional view in the figure. W●・●Packaged object, 2●・●filling cylinder, 6●◆●pipe shaft, 7●●●shaft, 8●●●air cylinder, 8a●●●outer end of piston rod, 8b+11111 cylinder tube, 9 ●●● Mouthless cylinder, 9a●●●Piston integrated table, 10●●●Bracket, 11●・Lifting block, l2●●◆Flapper valve,

Claims (1)

[Scope of Claims] In an unloading elevator that is provided inside a filling cylinder of a packaging machine and is capable of stacking items to be packaged, which are introduced from the top end of the cylinder, to a lower part and dropping them at the lower part, comprising: The two pipe shafts passed through the front side,
two shafts that are passed through each pipe shaft and have upper and lower ends protruding; an air cylinder whose outer end of a piston rod is connected to the upper ends of the two shafts to raise and lower the shafts; a rodless cylinder that is supported by a piston-integrated table and moves the pipe shaft up and down; a bracket that is erected from the piston-integrated table of the rodless cylinder and supports the cylinder tube of the air cylinder; A lifting block that is connected and occupies a small space in front of the inside of the filling cylinder, and a lifting block that is connected on one side to the lifting block and substantially closes the space that is not occupied by the lifting block in the filling cylinder when supported horizontally. A flapper valve to be obtained is provided by connecting the lower ends of the two shafts, and supports the flapper valve horizontally when the air cylinder is contracted, and when the air cylinder is extended, the flapper valve is supported by gravity. 1. An unloading elevator installed inside a filling cylinder of a packaging machine, comprising a flapper valve support stopper spaced apart from the lifting block so as to open the valve by action.