JPH0734803Y2 - Packaging equipment - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a packaging device for hermetically packaging fresh food and the like.

[0002]

2. Description of the Related Art Conventionally, as a device of this type, a vertical cylindrical chute for loading an article to be packaged has a bottom and is fed by a predetermined length along the outer peripheral surface thereof. After putting the article to be packaged through the vertical tubular chute, the upper side of the article to be packaged of the packaging film is welded to the upper and lower two places by the horizontal welding member to thereby hermetically package the article to be packaged with the packaging film. At the same time, by cutting with a cutting blade between the two welded portions, a bottomed tubular packaging film similar to that described above is formed, and thereafter, in a similar procedure, the object to be inserted into the vertical tubular chute is formed. There is one in which packages are sequentially sealed.

[0003]

[Problems to be Solved by the Invention]
If you accidentally insert multiple items to be packaged in the vertical cylindrical chute, or if you accidentally insert foreign matter following the item to be packaged,
The object to be packaged or the foreign matter that is erroneously put in may be cut by the cutting blade, or the cutting edge of the cutting blade may be damaged.

An object of the present invention is to provide a packaging device in which, in such a case, an object to be packaged or a foreign substance which has been erroneously introduced is not cut by the cutting blade and the blade edge of the cutting blade is not damaged. .

[0005]

The structure of the present invention for achieving the above object will be described with reference to the drawings corresponding to the embodiments. Claim 1 of the present invention is that a synthetic resin packaging film F has a cylindrical shape. The horizontal welding member 12 supported by the lateral feed rod 31 and laterally fed to the rod 31 is provided below the lower end of the vertical cylindrical chute 2 configured to feed the film F downward along the outer peripheral surface while being formed. , 13 and a cutting blade 14 are provided, and the tubular packaging film F, which is fed downward from the lower end of the vertical tubular chute 2 by the horizontal feeding of the horizontal welding members 12, 13 and the cutting blade 14, is welded in the horizontal direction. At the same time, the continuous tubular packaging film F is cut so that the article S to be packaged, which is fed into the tubular packaging film F via the interior of the tubular chute 2, is completely packaged. In instrumentation apparatus of the lateral welding members 12 and 13 and the cutting blade 14, the lateral weld member 1
2 and 13 are elastically supported by the lateral feed rod 31 via a buffer spring 32, and the cutting blade 14 is elastically supported by the lateral feed rod 31 via a support spring 43 having a weaker spring force than the buffer spring 32. Is adopted.

The second aspect of the present invention employs a configuration in which the support spring 43 is provided so that its spring force can be adjusted.

[0007]

According to the first aspect of the present invention, the lower end of the tubular packaging film F which has been fed down along the vertical tubular chute 2 is welded by the horizontal welding member 12 to form a bottomed tubular packaging. Since the film F is formed, the vertical cylindrical chute 2 is formed.
By simply inserting the article S to be packaged such as fresh food, the article S to be packaged can be loaded into the bottomed tubular packaging film F.

Next, the upper side of the article S to be packaged in the bottomed cylindrical packaging film F is vertically welded to the upper and lower sides by horizontal welding members 12 and 13.
The above-mentioned article S to be packaged can be hermetically packaged by spot welding, and at the same time, by cutting between the two welding points of the packaging film F with the cutting blade 14, a bottomed cylindrical package similar to the above. The film F can be formed, and thereafter, the objects S to be packaged dropped in the vertical cylindrical chute 2 can be sequentially sealed and packaged by the same procedure.

The welding cutting step will be described in a little more detail. The horizontal welding members 12, 13 are elastically supported by the lateral feed rod 31 via the buffer spring 32 and laterally move, so that the moving end thereof is shown in FIG. As described above, the horizontal welding members 12 and 13 are brought into pressure contact with the welding receiving base 15 which is driven in close proximity in synchronization with each other by the pressure contact force of the buffer spring 32, and the packaging film F between them is welded, and the cutting blade 14 is Further, the packaging film F is cut by being laterally moved by being elastically supported by the lateral feed rod 31 via the support spring 43. That is, the welding work is performed by the pressure contact force of the buffer spring 32,
For the cutting work, the support spring 4 having a weaker spring force than the buffer spring 32 is used.
It will be carried out with a supporting force of 3.

Here, even if a plurality of articles S to be packaged are mistakenly inserted into the vertical cylindrical chute 2 or foreign matter K is mistakenly inserted following the article S to be packaged, they are mistakenly inserted. Since the cutting blade 14 that hits the article S or foreign matter K retracts against the support spring 43 that is weaker than the spring force of the buffer spring 32, the article S or foreign matter K that was accidentally inserted is cut. In addition, the cutting edge 14a of the cutting blade 14 is not damaged.

According to the second aspect, the support spring 43 is provided.
The cutting force of the cutting blade 14 can be appropriately set according to the strength of the packaging film F by adjusting the spring force of.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows a hermetic packaging device according to an embodiment of the present invention, in which a vertical cylindrical chute 2 for loading an object to be packaged is provided at the front part of the device body 1 and The forming plate 3 is loosely fitted on the upper part of the mold-shaped tubular chute 2, and a vertical welding device 4 for forming the packaging film F in a cylindrical shape by welding is provided so as to face the central portion of the vertical cylindrical chute 2. At the same time, a horizontal welding cutting device 5 is provided below the vertical tubular chute 2 to weld and cut the tubular packaging film F at predetermined intervals along the longitudinal direction thereof. A heating transverse feeding device 7 is provided at the bottom.

The forming plate 3 is formed by bending a single metal plate in a downwardly spread shape, and has a roll-like shape which is rotatably disposed above the apparatus body 1 by its inner peripheral edge portion 3a. Guide rollers 9 to 9 from the packaging film F
The sheet-shaped packaging film F pulled out through is bent downward to form a tubular shape along the outer peripheral surface of the vertical tubular chute 2, and the side edge portion of the tubular packaging film F is formed. They polymerize each other.

As shown in FIG. 1, the vertical welding device 4 includes a horizontal drive rod 10 projecting forward from the device main body 1,
A vertical cylindrical chute 2 attached to the horizontal drive rod 10.
And a vertical welding member 11 facing the central part of the horizontal drive rod 10, and by horizontally driving the horizontal drive rod 10 toward the apparatus main body 1 side,
The vertical welding member 11 is pressed against the vertical tubular chute 2 via the side edges of the packaging film F which are overlapped with each other, whereby the both side edges are welded to each other to form the tubular packaging film F by welding. To do.

As shown in FIGS. 2 to 4, the horizontal welding cutting device 5 includes a pair of upper and lower horizontal welding members 12 and 13,
It has a cutting blade 14 inserted into a through hole 29 formed between the horizontal welding members 12 and 13, and a welding pedestal 15 facing the horizontal welding members 12 and 13 with a packaging film F interposed therebetween. The horizontal welding members 12 and 13 are elastically supported via the buffer springs 32 and 32 to the lateral feed rods 31 and 31 on which the boss portions 30 and 30 provided at both ends are slidably fitted, and the cutting is performed. The blade 14 is composed of the two lateral feed rods 31,
It is supported by a cutting blade supporting device 34 arranged on a connecting rod 33 for connecting the tip end portions of 31 to each other.
Is fixed to a horizontal drive rod 16 which is horizontally driven in synchronization with the transverse feed rods 31, 31.

As shown in FIG. 5, the cutting blade supporting device 34 has a supporting frame 35 fixed to the side surface of the connecting rod 33.
Has a pair of pivot links 37, 37 pivotally supported horizontally via pivot shafts 36, 36.
A cutting blade supporting member 38 fixed to the cutting blade 14 is rotatably connected to the tip end portions of the cutting blades 7 and 37 via connecting shafts 39 and 39, whereby the cutting blade 14 can be horizontally moved in the front-rear direction. Is configured. Further, a protrusion 41 protruding from a spring force adjusting block 40 disposed on the upper surface of the connecting rod 33 and a link extension 37a integrally protruding from the base end of the one rotating link 37 are protruded. A supporting spring 43 having a spring force weaker than that of the buffer springs 32, 32 is stretched between the protruding portion 42 and the cutting blade 1.
4 is urged toward the apparatus body 1 side. Further, the tip standing portion 44a is provided on the lower surface of the connecting rod 33, and the cutting blade support 3
A substantially L-shaped stopper 44 that abuts 8 is fixed, so that the saw-toothed blade edge 14a of the cutting blade 14 does not protrude from the horizontal welding members 12 and 13 to the apparatus main body 1 side except during the cutting operation. Are regulated. Further, a long hole 45 is formed in the spring force adjusting block 40 along the longitudinal direction of the connecting rod 33, and the spring force adjusting block 40 is connected by a bolt 46 fixed to the connecting rod 33 through the long hole 45. It is fixed at a desired position on the rod 33, so that the spring force of the support spring 43 can be adjusted according to the strength of the packaging film F.

In the above structure, the transverse feed rods 31 and 31 and the horizontal drive rod 1 are moved from the state shown in the solid lines in FIG. 2 and FIG.
By synchronously driving 6 and 16, the buffer springs 32,
The horizontal welding members 12 and 13 biased by 32 are pressed against the welding receiving base 15 through the tubular packaging film F, the packaging film F is welded at two upper and lower positions, and the spring force of the buffer spring 32 is smaller than that of the buffer spring 32. Cutting blade 14 biased by weak support spring 43
Thus, the space between both welded portions is cut (state in FIG. 6).

After the welding and cutting, the transverse feed rods 31, 31
The horizontal welding members 12 and 13 and the cutting blade 14 and the welding pedestal 15 retreat in the opposite directions and are separated by the synchronous drive between the horizontal driving rods 16 and 16 and the cutting blade 14 is attached at this time. The spring force of the urging support spring 43 causes the buffer spring 32,
Since it is weaker than the spring force of 32, the support spring 43 may expand, and the retreat of the cutting blade 14 may be delayed behind that of the horizontal welding members 12 and 13. However, in this case, the stopper 44
Since the tip standing portion 44a of the blade abuts on the cutting blade 14 via the cutting blade support 38, the cutting blade 14 is attached to the horizontal welding member 1
It can be retreated together with 2, 13.

According to the above construction, the upper horizontal welding member 1
2, the lower end of the tubular packaging film F is welded,
Since the bottomed tubular packaging film F is formed, the article S to be packaged is simply inserted into the vertical tubular chute 2 to insert the article S into the bottomed tubular packaging film F. Moreover, the upper portion of the packaging film F into which the article S to be packaged is inserted is welded by the horizontal welding member 13 on the lower side, and the article S to be packaged is hermetically sealed (see FIG. 1).

By the way, as shown in FIG. 7, when a foreign object K is mistakenly introduced into the bottomed tubular packaging film F following the article S to be packed, the cutting edge 14a of the cutting blade 14 is inserted into the foreign object K.
Is pressed, but at this time, the spring force of the support spring 43 for urging the cutting blade 14 is made weaker than the spring force of the buffer spring 32 to the extent that the packaging film F can be cut. Since the blade 14 can be retracted against the support spring 43, the foreign matter K is not cut, and naturally, the cutting edge 14a of the cutting blade 14 is not damaged.

In FIG. 3, reference numeral 48 denotes a pair of movable welding members 12 and 13 and a welding receiving base 15 which are movably arranged within a certain range and are urged toward each other by a spring 49. Is a packaging film pressing plate of
At the time of welding cutting shown in FIG. 6, the tubular packaging film F is sandwiched so as to have a flat shape to facilitate welding cutting.

Further, as shown in FIG. 4, a pair of upper and lower projections 29a are provided so as to sandwich the cutting blade 14 on the inner peripheral surface of the through hole 29 through which the cutting blade 14 is inserted. This reduces the contact resistance between the cutting blade 14 and the inner surface of the through hole 29, and supports the cutting blade 14 so as not to vibrate vertically.

As shown in FIG. 1, the heating transverse feeding device 7 has a heating tunnel 21 formed in the lower portion of the device body 1.
And a traverse conveyor 22 arranged in the heating tunnel 21, and the article S to be packaged sent downward from the horizontal welding cutting device 5 via the roller conveyor 19 is traversed into the heating tunnel 21. And heats the article S to be packaged by a heater provided in the heating tunnel 21. By using a heat-shrinkable film as the packaging film F for hermetically packaging the article S to be packaged, The film F can be adhered along the shape of the article S to be packaged. Therefore, not only the object S having a fixed shape but also the object S having an indefinite shape can be reliably hermetically packaged.

In FIG. 1, reference numeral 25 denotes a packaging film feed roller which is in pressure contact with the vertical cylindrical chute 2 through the packaging film F, which is intermittently rotated in synchronization with the horizontal welding cutting device 5. The packaging film F is intermittently fed downward by a predetermined length.

Explaining the procedure of the hermetically sealed packaging, the packaging film feeding roller 25 descends the packaging film F along the vertical cylindrical chute 2 by a predetermined length, and the packaging film F is fed.
The side edges of the above are welded by the vertical welding member 11 to form the tubular packaging film F, and the lower end of the packaging film F is welded by the upper horizontal welding member 12 to form a bottomed tubular packaging. The film F is formed.

Next, the article S to be packaged is placed in the vertical cylindrical chute 2.
, The packaged object S passes through the vertical cylindrical chute 2 and is put into the bottomed cylindrical packaging film F.

Subsequently, the horizontal welding cutting device 5 is operated, the packaging film F is welded to the upper and lower two portions by the horizontal welding members 12 and 13 and the welding pedestal 15, and the cutting blade 14 is provided between the two welding portions. It is cut by (Fig. 6 state).

Here, when the foreign material K is mistakenly introduced into the bottomed tubular packaging film F following the article S to be packaged, the cutting edge 14a of the cutting blade 14 is pressed against the foreign matter K, The cutting blade 14 retracts against the support spring 43 and does not cut the foreign matter K.
4a is not damaged either.

The object S to be packaged, which is hermetically packaged by the horizontal welding cutting device 5, is heated through a roller conveyor 19 and a heating tunnel 21.
The object S to be packed is laterally fed into the inside, and the object S to be packed tightly wrapped with the packing film F is sent out from the heating tunnel 21.

[0030]

According to claim 1 of the present invention, when a plurality of items to be packaged are mistakenly inserted into the bottomed tubular packaging film or a foreign substance is mistakenly introduced following the items to be packaged. , The blade edge of the cutting blade is pressed against the object or foreign matter that has been accidentally thrown in, but at this time, the spring force of the support spring that urges the cutting blade is adjusted to the extent that the cushioning spring is cut to the extent that the packaging film can be cut. Since it is weaker than the spring force, the cutting blade retreats against the support spring and protects the accidentally thrown objects and foreign objects from being cut and the cutting edge of the cutting blade from being damaged. be able to.

According to the second aspect, the spring force of the support spring can be appropriately set according to the strength of the packaging film so that the packaging film can be cut most effectively by the cutting blade.

[Brief description of drawings]

FIG. 1 is a partially cutaway side view of a packaging device according to an embodiment of the present invention.

FIG. 2 is a horizontal enlarged cross-sectional view of the main part.

FIG. 3 is a vertical cross-sectional view of the main part.

FIG. 4 is a view on arrow AA of FIG.

FIG. 5 is a perspective view of a cutting blade support device used in the same device.

FIG. 6 is a longitudinal cross-sectional view of a main part showing a welding cut state of the packaging film.

FIG. 7 is a vertical cross-sectional view showing an operation when a foreign matter is put into the packaging film.

[Explanation of symbols]

 2 Vertical cylindrical chute 12 Horizontal welding member 13 Horizontal welding member 14 Cutting blade 31 Horizontal feed rod 32 Buffer spring 40 Spring force adjustment block 43 Support spring F Packaging film S Packaged object K Foreign matter

Claims (2)

[Scope of utility model registration request] 1. A rod which is supported by a lateral feed rod below the lower end of a vertical tubular chute in which a synthetic resin packaging film is formed into a tubular shape and is fed downward along the outer peripheral surface of the film. Provided with a horizontal welding member and a cutting blade to be laterally fed, while laterally welding the tubular packaging film fed downward from the lower end of the vertical tubular chute by the lateral feeding of these horizontal welding member and cutting blade, At the same time, the continuous tubular packaging film is cut so that the packaged article that is put into the tubular packaging film through the interior of the tubular chute is completely packaged. Of the welding member and cutting blade,
A packaging device in which the horizontal welding member is elastically supported by the lateral feed rod via a buffer spring, and the cutting blade is elastically supported by the lateral feed rod via a support spring having a weaker spring force than the buffer spring. 2. The packaging device according to claim 1, wherein the support spring is provided so that its spring force can be adjusted.