JPH0213284Y2 - - Google Patents

Description

[Detailed description of the invention] (Technical field of the invention) This invention relates to a sealing device for synthetic resin packaging containers, and in particular, it automatically performs the process of filling a container with food, etc. and thermally welding a sealing lid to the top of the container. This invention relates to a synthetic resin packaging container sealing device.

(Technical background and problems of the invention) In order to arrange a plurality of containers at predetermined positions, this type of device has a container stand, such as a mold, having a plurality of recesses, and each container stand is connected. The members are connected in a chain to form a circulation path and are continuously driven.

On the outward path of this circulation path, synthetic resin containers are sequentially fitted onto one or more of the container stands, and then contents such as food are poured into the containers. Thereafter, sheet-like sealing lid members are laid in series over a plurality of container stands, heat-sealed, and then cut into the required number. The thus completed product is taken out from the container stand at the end of the outgoing path of the circulation path and dropped, and the empty container stand is sequentially returned along the return path of the circulation path to the beginning of the aforementioned outgoing path of the circulation path.

As described above, in the conventional apparatus, a large number of container stands are present throughout the entire circulation path.

However, with such a device, (1) a large number of container stands are required, and it takes a great deal of effort to replace containers when sealing containers of different sizes. Furthermore, (2) the conveyor is usually constructed by attaching a chain to the bracket of the container stand, so it is extremely difficult to replace the container stand itself. Moreover, (3) the position of the container stand and therefore the container may change due to wear of the chain conveyor or expansion and contraction of the chain due to heat, and as a result, it is difficult to seal the seal lid in an accurate position. There will be cases where this is not possible. In this case, in severe cases, the sealing itself was incomplete and there was a risk that the contents would come out.

(Purpose of the invention) This invention was made in an attempt to eliminate the above-mentioned drawbacks of the conventional technology, and provides a synthetic resin packaging container sealing device that allows easy replacement of the container stand and has a high sealing accuracy of the seal lid. The purpose is to

(Summary of the invention) In order to achieve this purpose, according to this invention,
a container supply means for supplying containers to a container stand for arranging the containers at predetermined positions; a content supply means for supplying contents to the containers conveyed by the container stand; a sealing means for supplying and arranging a sheet-like sealing lid on the container stand on which a container is mounted, thermally welding it, and cutting it; a finished product taking-out means for taking out the finished product sealed with the sealing means from the container stand; The container stand is moved in the order of the container supply means, the contents supply means, the sealing means, and the finished product take-out means to obtain the finished product, and the completed product is taken out by the finished product take-out means and the finished product is emptied. In the synthetic resin packaging container sealing device, the circulation path has a starting end on the container feeding means side and a terminating end on the finished product taking out means side. A fixed track functioning as an outbound path, an elevation means provided at the starting end side and the terminal end side of the fixed track, and the container platform pulled down from the fixed track by the elevator means at the terminal end side of the fixed track. A conveying device that feeds the container to the starting end side elevation means, and the container platform sent to the starting end side elevator means, which is raised to the position of the fixed track by the elevator means and then pushed into the fixed track. It is provided with extrusion means for ejecting.

(Embodiments of the invention) Examples of the invention will be described below with reference to the accompanying drawings. Note that the same reference numerals in each figure indicate similar objects.

FIG. 1 is a side view showing an embodiment of this invention.

The apparatus according to this embodiment includes a base 10, extrusion means 20, container supply means 30, and content supply means 4.
0, sealing means 50, finished product removal means 6
0, terminal side elevation means 70, conveyance means 8
0, a starting end side elevation means 90, and a fixed track 100.

The base 10 has a fixed track 100 (described later) laid on its top plate 11, and extrusion means 20,
It is a substantially rectangular casing in which a container supply means 30, a content supply means 40, and a sealing means 50 are arranged in this order at a predetermined interval. This base 1
Inside the vehicle, elevator means 70 and 90 are installed at both ends of a track 100, and a conveying means 80 such as a belt conveyor is provided between the elevator means 70 and 90.

The extrusion means 20 is as shown in the plan view of FIG. 2 and the cross-sectional view of FIG. 3. Note that FIG. 3 is a sectional view taken along the - line in FIG. 2.

Top plate 11 of the aforementioned base 10 (Fig. 1)
A bearing 12 is disposed on the left side. A crankshaft 21 fixed to the center of a circular crank 22 is inserted through the bearing 12, and the crank 22 is rotated by driving this shaft 21 with a motor (not shown) or the like.

A crank pin 23 is fixed to one end of the crank 22 by a screw rod 24. This screw rod 24 extends in the radial direction of the crank 22, and by rotationally adjusting the screw rod 24, the position of the crank pin 23 can be changed. Depending on the position of this crank pin 23,
The stroke of the extrusion operation, which will be described later, can be changed.
A crank rod 25 is rotatably attached to the crank pin 23, and the movement of the crank rod 25 causes the pedestal 26 to move left and right.

That is, the other end of the crank rod 25 is rotatably engaged with the pin 26a of the pedestal 26.
Furthermore, a suspension block 26c having a through hole 26b is formed in a square of the pedestal 26. This through hole 26b is connected to a support 28 fixed to the plate 11.
Two rails 27a and 27b supported substantially parallel to each other by a, 28b and 28c are inserted through the rails 27a and 27b. That is, the pedestal 26 is attached to this rail 27.
This rail 27a, 27b is suspended from a, 27b.
It can be moved left and right along.

Further, an air cylinder 29 is fixed to the pedestal 26. A block 29b for pushing out the container stand is attached to the tip of the piston rod 29a of the air cylinder 29. This air cylinder 29 normally has the block 29b in the position shown and is capable of pushing out the container stand, but if an accident occurs in another process and extrusion has to be stopped, the air cylinder 29 is equipped with a control device that detects the accident. Based on a signal from the air pipe 29c (not shown), air is sent into or sucked out from the air pipe 29c to raise the block 29b to a position where it cannot be pushed out.

Furthermore, as can be seen from the drawing, the rails 27a, 2
7b extends over an elevation space 94 of an elevation means 90, which will be described later, and onto a fixed track 100 comprising a plurality of guide bodies 101 to 105, which will also be described later.

Therefore, this extrusion means 20 rotates the crank 22 so that the pedestal 26 is moved to the rails 27a, 27b.
move on. That is, with the pedestal 26 moved to the left end (solid line position in FIG. 1), the container pedestal is raised to the position of the fixed track 100 by the elevation means 90, and then the pedestal 26 is moved to the right. Push the container onto the fixed track 100 (first
position of the dotted line in the figure).

The container stands are successively pushed out by this extrusion means, and the container stands are moved in the right direction in FIG. 1 on the track 100 in order.

The container stand pushed out into the fixed track 100 in this way is shown in cross section in FIG. 4, and in plan view in FIG. 6. Here, FIG. 4 is a sectional view taken along the - line in FIG. 3.

The container stand 140 is provided with two rows of six holes 141, and an annular groove 142 is formed around each hole 141.
is formed. The annular groove 142 is for forming a non-welded portion of the seal lid. Further, a step 143 is provided around the container stand 140, so that a certain distance is created between adjacent container stands.

The container supply means 30 stacks a plurality of containers and stores them in a storage section 31, and when the container stand reaches the lower part of this means 30, one of the containers is stacked as shown in FIG. 4 (and FIG. 6). Fit it to the container stand 140 side shown.

The content supply means 40 supplies a plurality of nozzles 4 to each container installed on a container stand via a pipe 42 from a storage tank 41 containing contents such as liquid food.
3, the contents are injected in the required amount. The nozzle 43 is equipped with a valve (not shown), which opens when the container stand is positioned under each nozzle of the content supply means 40 and closes when the required amount has been injected, but this timing is determined separately. taken by a control device (not shown).

The sealing means 50 includes two thermocompression bonders 51,
52 and a cutter 53. It also has a delivery reel 54 on which a sheet-shaped sealing lid material is wound, and the processed sheet 57 is wound onto a take-up reel 58 via guide rollers 55 and 56. taken.

That is, a plurality of container stands are always located under the sealing means 50, and the winding tension of the reels 54 and 58 causes the tension between the guide rollers 56 and 57 as shown in FIG. As shown in the cross-sectional view of FIG.

Therefore, after the sealing lids 59 are successively heat-welded and sealed by the thermocompression bonders 51 and 52, each container can be cut into the required number by the cutter 53, thus producing a finished product.

The finished product removal means 60 takes out the finished product by vacuum suction.

That is, the finished product removal means 60 includes a suction pipe 6 that applies negative pressure using a vacuum pump (not shown).
A suction cup 62 is provided at the tip of the air cylinder 6.
At 3 and 64, the suction cup 62 is moved vertically and horizontally to take out the finished product.

The suction cup 62 has a plurality of suction ports corresponding to the positions of the finished products to be suctioned, and when the container platform carrying the finished products reaches the terminal end 100b of the fixed track 100 or the elevation device 70, the air pump 6
At step 3, the suction cup 62 is lowered to the container stand side to suction the finished product. After this suction, the suction cup 62 is raised, and the air pump 64 is driven to further move the suction cup 62 to the right in the drawing.
Bring the finished product to the position. Here, by reducing the negative pressure of the suction pipe 19a, the finished product is dropped into a previously prepared box or the like.

As described above, the fixed track 100 for sequentially moving the container stand 140 is as shown in FIG. 2 and FIG. 4 (or FIG. 5).
Two synthetic resin guide bodies 101, 102 having a width _W2 slightly larger than the width _W1 of 40 mm and a container stand 14
It consists of three rails 103, 104, and 105, also made of synthetic resin, which form the sliding surface of the slide. The synthetic resin guide members 101 and 102 stand up from the upper frame 13 of the base 10 and are used to prevent the container stand 140 from moving left and right.
The upper surfaces 101a and 102a of 1 and 102 are container stands 1
40 is located below the upper surface 140a. rail 1
03 to 105 are supported by a support (not shown) that mainly functions as a sliding surface for the container stand 140 and spans between the frames 13, as described above.
As mentioned above, the upper surface 140a of the container stand 140 is the upper surface 101a, 1 of the synthetic resin guide bodies 101, 102.
They are formed and arranged so that they are above 02a.

On the other hand, the empty container stand is placed on the conveying means 80 by the elevation means 70. The elevation means 70 on the track end side 100b is
Since it is similar to the elevation means 90 on the starting end side 100a, the elevation means 90 will be described later.

The conveying means 80 is a belt conveyor having an endless belt 85 installed between pulleys 81 and 82 and applied with a predetermined tension by rollers 83 and 84.
The endless belt 85 is driven by rotating a pulley 81 or a pulley 82 by a motor (not shown) to send the container platform lowered by the elevation means 70 toward the elevation means 90. The state of the conveying means 80 near the elevation means 90 is also shown in FIGS. 3 and 6, and the endless belt 85 is divided into two left and right belts 85a and 85b, and the pulley 82 is also connected by a shaft 89. It consists of two pulleys 82a and 82b. Furthermore, guide plates 86a and 86b are provided on the upper outer side of the circulation path of the belts 85a and 85b to position the container stand 140 and to accurately send the container stand 140 to the elevation means 90.

Note that the conveyance means 80 is not limited to a belt conveyor, but may also use other methods such as conveyance using compressed air.

The elevation means 90 is for positioning the container platform 140, which has become empty and has been sent by the conveying means 80, to the starting end side 100a of the track 100 again. This elevation means 90 is a third
As shown in the figure, it has an air cylinder 91 and moves a base plate 92 up and down based on a predetermined command signal given from a separate control device (not shown).
This base plate 92 moves up and down within an elevation space 94 (FIG. 2) of the elevation means 90.

As can be seen from FIGS. 2, 3, and 6, the elevation base 94 has a frame 94 (6th
It is formed by guide pillars 93a to 93h made of synthetic resin that are fixed to the guide shafts 93a to 93h and extend in the vertical direction. As can be seen from Figure 6, the elevator space 94
The container stand 140 is designed to just fit into the bottom end of the rectangular area defined by .

Therefore, as can be seen from FIG. 3, the guide column 93a
93f rises from the vicinity of the belt 85 of the conveying means 80, while the guide columns 93g and 93h stand up with a space so that the container stand 140 can pass through. The position of the upper end surface of each of the guide columns 93a to 93h substantially corresponds to the position of the upper surface of the rails 103 to 105 of the fixed track 100.

In this way, the container stand 140 sent in the direction of the elevation means 90 by the conveyance means 80 collides with the guide columns 93c and 93d and is located on the table plate 92 and thus at the lowest end of the elevation space 94 (Fig. 6). ).

After that, the base plate 92 lifts up with the empty container base 140 placed on it, and moves to the position of the fixed track 100 (reference numeral 1 in FIG. 3).
40a indicates the position of the container stand). The container stand 140 (position 140) that has stopped rising in this way
a) is pushed into the track 100 by the block 29b of the pushing means 20 (the position of the container platform is indicated by 140b).

As is clear from the above explanation, the container stand 140
are successively moved on the fixed track 100 by the extrusion operation of the extrusion means 20 and subjected to necessary processing, and the finished product is taken out by the finished product take-out means 60 at the terminal end 100b of the track 100. After this,
The empty container platform 140 is loaded onto the conveying means 80 by the elevation device 70, sent into the elevation means 90 at high speed, raised to the orbital position, and pushed out again into the fixed orbit 100 by the extrusion means 20. . Therefore, the fixed track 100, the elevation means 70, the transport means 80, and the elevation means 90 form a circulation path for the container platform 140, with the fixed track 100 forming an outgoing path and the transport means 80 forming a return path.

(Effect of the invention) By configuring this invention as described above,
It is possible to provide a synthetic resin container sealing device that has the following effects.

(1) Since the container stands are not connected to each other, it is easy to replace the container stands and, therefore, to change the product.

(2) By transporting each empty container stand individually to the starting end of the track at a higher speed than the movement of the container stands on the track, the number of container stands can be significantly reduced.

(3) Since the container stands are not connected in an endless chain, there is no need to worry about deterioration of sealing accuracy due to chain wear or temperature changes, resulting in high reliability.

(4) Since the stroke of the pedestal 26 of the extrusion means 20 can be easily changed by moving the crank pin 23 by rotating the screw rod 24, it is possible to immediately respond to extrusion when the size of the container pedestal changes.

(5) Since the extrusion block 29b of the extrusion means 20 is retracted in an emergency to stop extrusion of the container stand, it is possible to deal with unexpected accidents. Therefore, depending on the accident situation, it is possible to avoid producing a large number of defective products.

[Brief explanation of the drawing]

Figure 1 is a partially cutaway side view of an embodiment of this invention.
2 is a plan view of the main part of FIG. 1, FIG. 3 is a vertical sectional view taken along the - line in FIG. 2, FIG. 4 is a sectional view taken along the - line in FIG. −
6 is a plan view taken along the - line in FIG. 3. 20... Extrusion means, 21... Crankshaft, 2
2...Crank, 23...Crank pin, 24...
...screw rod, 25...crank rod,
26... mount, 30... container supply means, 40...
Content supply means, 50...Sealing means, 60
... Finished product take-out means, 70, 90 ... Elevation means, 80 ... Transport means, 100 ... Fixed track.

Claims (1)

[Scope of utility model registration request] a container supply means for supplying containers to a container stand for arranging the containers at predetermined positions; a content supply means for supplying contents to the containers conveyed by the container stand; a sealing means for supplying and arranging a sheet-like sealing lid on the container stand on which a container is mounted, thermally welding it, and cutting it; a finished product taking-out means for taking out the finished product sealed with the sealing means from the container stand; The container stand is moved in the order of the container supply means, the contents supply means, the sealing means, and the finished product take-out means to obtain the finished product, and the completed product is taken out by the finished product take-out means and the finished product is emptied. In the synthetic resin packaging container sealing device, the circulation path has a starting end on the container feeding means side and a terminating end on the finished product taking out means side. A fixed track functioning as an outbound path, an elevation means provided at the starting end side and the terminal end side of the fixed track, and the container platform pulled down from the fixed track by the elevator means at the terminal end side of the fixed track. A conveying device that feeds the container to the starting end side elevation means, and the container platform sent to the starting end side elevator means, which is raised to the position of the fixed track by the elevator means and then pushed into the fixed track. A synthetic resin packaging container sealing device characterized by being equipped with extrusion means.