JPH02166028A - Apparatus for sealing package - Google Patents

Abstract

PURPOSE:To simplify a mechanism for carrying a package and reduce manufacturing cost of an apparatus by a method wherein a package is carried onto a sealing base by sliding it on a feeding base, an upper and a lower molds are moved vertically on the sealing base, and a lid is tightly sealed on the upper face of the package. CONSTITUTION:When a package is mounted on a feeding base 12, it is pushed by a transfer shaft 34 which intermittently moves together with chains 33a, 33b, and slid intermittently on the feeding base 12. When the package is carried from the feeding base 12 to a predetermined position on a sealing base 13, driving of the chains 33a, 33b is stopped, and a lid is put and sealed during the stoppage. An actuator 49 of a mechanism 45 for returning the transfer shaft 34 operates almost at the same time as stoppage of the chains 33a, 33b at this time, and it swings an arm 48 to push the transfer shaft 34 to a retreating direction. This pushes back the transfer shaft 34 against elastic force of a spring 40 to a position that it is disengaged from the sealing base 13. A heating lower mold 20 is rises in this state to perform specified sealing.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a packaging container sealing device for sealing an opening of a container body molded from synthetic resin or the like by placing a lid on the opening.

(Prior Art) In general, aqueous confectionery such as jelly and pudding, and processed foods such as tofu are stored in a dish-shaped or lug-shaped container body with a flange a at the outer edge of the opening, as shown in FIG. A sheet-like lid member B is placed over the opening of the flange A, and the upper surface of the flange a is sealed by heat sealing or pressure sealing using a pressure sensitive adhesive.

In recent years, such hermetically packaged foods have come to be manufactured and sold as handmade products in small-scale shops, etc., while devices for sealing this type of packaging containers have conventionally been used to seal packaging containers, as shown in Figure 7. A ring-shaped packet 2 supporting the flange a of the container body A on the upper surface is carried by a pair of conveying chains 3.
A container body supply means 4 that automatically supplies the packaging container body A into the packet 2 is placed on the upper part of the conveyance means, and a container body supply means 4 that automatically supplies the packaging container body A into the packet 2 is used. automatic packaging means 5 for filling into A;
A film supplying hand V17 that applies the sealing film 6 onto the container body A, and a heat sealing means 9 that presses and welds the film 6 onto the flange a of the container body A with a heat sealing upper mold, and the packet 2 There is known an apparatus in which the filling of the package and the heat-sealing of the film 6 are performed while the film is intermittently fed.

However, with such conventional devices, it is necessary to use a large number of packets that match the shape of the packaging container body to be sealed, and when using packaging containers with different shapes, all the packets must be It is necessary to change the packets each time to match the shape of the main body, so it takes a lot of effort to replace the packets, and it is also necessary to produce and store a large number of packets for each shape, which leads to high costs. It was something like that.

Therefore, in view of this situation, the present inventor developed a structure in which the container bodies are sent on a conveyance table without being placed in a packet, and the - sealing packets are moved up and down to seal the successively sent container bodies. Developed a device for
No. 52183).

(Problem to be solved by the invention) However, with the previously developed device, there is no member for conveyance on the sealing table during the sealing operation because it is necessary to raise the sealing table and sealing with the conveyance stopped. For this purpose, a separate transport system was provided for each part of the infeed transport stage before sealing, the seal stage, and the unloading stage, resulting in a complicated mechanism and a large number of parts, resulting in high costs. was.

In view of these problems, the present invention has been made with the aim of reducing the number of parts and reducing the amount of varnish by providing a simple conveyance mechanism that is continuous to each part.

(Means for Solving the Problems) A feature of the packaging container sealing device of the present invention for solving the above-mentioned conventional problems and achieving the intended purpose is that the container body with the opening facing upward is a feeding table that can be placed on and slidable thereon, a sealing table having a sealing mold that is raised around the container body placed on the upper surface, and a carrying-out table on which the container body after sealing can freely slide on the upper surface. A pair of conveyor chains are arranged in sequence with their upper surfaces at approximately the same height, are continuous on both sides of each conveyor chain, are arranged parallel to each other, and are operated intermittently at a constant length, A large number of conveyor rods are installed horizontally between both chains at intervals corresponding to the intermittent operation pitch of the chains, and are mounted on the upper surface of each chain and move together with the chains, and the conveyor rods are arranged for each chain to
The chain is capable of reciprocating by a certain length in the longitudinal direction of the chain, is biased by a spring toward the chain traveling direction, and is housed in the chain by 1ζt. Transport rod return R for retracting the transport rod to a position where it comes off from above the seal mold on the seal stand
The reason lies in the fact that the sides are prepared.

(Function) This sealing device, when the container body is placed on the feeding table,
The container body is pushed by a conveyor rod that moves together with both chains and slides intermittently on the feed table. Then, depending on the case, the contents are filled on the feeding table while the conveyance is stopped.

Note that the container body filled with the contents may be placed on the feeding table without providing a filling device.

The container body containing the contents in this manner is pushed by the conveyor rod, is sent from the feeding table onto the sealing table, and is stopped. At this time, the transport rod return mechanism works, and the transport rod that sent the container body onto the sealing table is moved to the sealing mold -F of the sealing table.
In this state, the seal mold of the seal stand rises, and the lid material is placed on the opening of the container body and sealed by pressure adhesion or heat welding.

(Example) Next, an example of implementation of the present invention will be described with reference to FIGS. 1 to 6.

In the figure, 11 is a device stand. On the upper surface of this pedestal 11, there is a horizontally arranged feeding table 12, a sealing table 13, and an unloading table 1.
4 are provided at the same height and arranged in a straight line.

The sealing stand 13 is provided with a heated sealing lower mold 20 around it that is moved up and down by an air cylinder 21, and above it is provided with a heated sealing upper mold 22, which is reciprocated by an air cylinder 23 opposite to the lower mold 20. I try to do that.

A lid material 25 made of a strip-shaped laminate film kited by kite rolls 24a and 24b is arranged below the upper mold 22, and this lid material 25 is attached to the supply side shaft 26a by a roll 25a.
The lower mold 20 is mounted on the winding shaft 26b and is intermittently wound around the winding shaft 26b.
2 descends, presses the lid material 25 onto the flange part and heat-welds it, and at the same time pulls it out from the band-shaped part in a shape that matches the outer shape of the flange a, and the remaining material after being pulled out is placed on the winding shaft 26b. I'm trying to wrap it up.

A pair of kite rods 30, 30 facing in the elongated direction are provided on the upper surface of the feeding table 12, the positions of which can be changed in the width direction, and the container main body A is slid between these two guide rods 30, 30. I have to. This feeding table 12, sealing table 1
3 and 3 on the loading platform 14! ! Subsequently, common conveying means are provided.

This conveying means includes a pair of Sugerocket shafts 31 and 32 supported under the inlet side end of the feeding table 12 and under the outlet side end of the unloading table 14, and each of the sprocket shafts 31 and 32.
．． A pair of Suge rockets 31a fixed to each of 32
, 31b, 32a.

32b, a pair of chains 33a, 33b which are hooked around this Sugerocket and arranged parallel to each other, and a large number of transport rods 34.3 suspended horizontally with no gaps between these chains.
By rotating the Sugerocket shaft 31 by the motor 35, the chains 33a, 33
b is driven, and the transport rod 34 is moved to push the container body A.

Each conveyor bar 34 has two chains 33a, 33 at both ends thereof.
b, and is supported so as to be able to reciprocate in the conveyance direction. That is, the chain 33a.

33b, as shown in FIGS. 3 and 4, there are brackets 36 at mutually opposing positions that are pivotally supported by a pair of chain pivot shafts, and each bracket 36 has a rectangular shape facing in the direction of movement of the chain. Box 37 or 10 is fixed. This box 37 has an open top side, and a kite shaft 38 is fixed to the central part of the box 37 in the longitudinal direction, and a piece 39 is slidably fitted into this guide shaft 38. A coil spring 40 is wound around the chain to bias it in the direction of movement of the chain.

A transport rod 34 is fixed to this piece 39. The coil spring 40 used here is strong enough to prevent the pieces 39 from being pushed back depending on the load when pushing the container body A.

A transport rod return mechanism 45 is provided on the upper side of both sides of the sealing stand 13. As shown in FIG. 1, FIG. 5, and FIG. 4
A pair of arms 48 and 48 are respectively projected at right angles from 7, and the rotation shaft 47 is reciprocated by a rotary actuator 49. The tips of both arms 48 are normally retracted to a higher position than the transport rod 34.
When the conveyance rod 34 pushes out the container body A onto the sealing stand 13 and stops, the conveyance rod 34
The actuator 49 is operated to push back by the tips of both arms 48.

The packaging container band and sealing flap constructed in this way is mounted on the feeding table 1.
When the container body A is placed on 2, the chain 33a,
It is intermittently slid on the feed table 12 by being pushed by the conveyance rod 34 that is moving together with the conveyance rod 33b. When the container main body type is fed from the top of the feeding table 12 to a predetermined position on the sealing table 13, the driving of the chains 33a and 33b is stopped, and the lid is closed and sealed while the chain 33a and 33b are stopped. At this time, the actuator 49 of the conveying rod return mechanism 45 operates almost simultaneously with the stopping of the chains 33a, 33b, rotates the arms 48, 48, and pushes the conveying rod 34 in the direction of retreat. It is pushed back to a position where it is removed from the sealing base 13 against the elastic force of. In this state, the heat-sealing lower mold 20 is raised to achieve a predetermined seal.

When the lid closing and sealing operations are completed in this way, the transport rod return mechanism 45 returns to its original state, and the transport rod 34 is pushed back to the forward position by the spring 40 again, and the chains 33a and 33b are operated to transport the rod. The sealed container is pushed out from the seal table 13 onto the carry-out table 14 by the rod 34, and is carried out.

(Effects of the Invention) As described above, the packaging container sealing device of the present invention is configured such that the container body is sent onto the sealing table by sliding it on the feeding table, and the upper and lower molds are moved up and down on the sealing table. Since the lid material is brought into close contact with the top surface of the container body, only one pair of upper and lower molds is required for sealing. Therefore, when sealing multiple types of container bodies with different shapes, , it can be handled by simply replacing a pair of upper and lower molds, there is no need to prepare a large number of identical molds for each shape, and it does not require a great deal of labor to replace the molds. A transport mechanism is adopted in which a transport rod is supported between chains so as to be movable back and forth, and the container body is pushed and slid by the transport rod, and a transport rod return mechanism is provided for retracting the transport rod at t4 at the sealing table position. As a result, even if the sealing mechanism is such that the sealing mold moves up and down at the sealing stand position, the mechanism for conveying the container is simplified and the manufacturing cost of the device is reduced, especially when using containers of other types in small quantities. The economical efficiency of sealed packaging has been significantly improved.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal sectional view showing an example of the implementation of the present invention, Fig. 2 is a cutaway plan view of the same portion, Fig. 3 is a plan view of the conveyor rod portion relative to the chain, and Fig. 4 is A in Fig. 3. -A sectional view, FIG. 5 is a side view of the elliptical portion of the transport rod return lfi, FIG. 6 is a plan view of the same, FIG. 7 is a perspective view of an example of a sealed container, and FIG. 8 is a longitudinal section showing a conventional device. It is a front view. A: Container body, 12: Feeding table, 13: Seal table, 14: Unloading table, 20: Lower mold, 22... Upper mold, 25
...Lid material, 30...Guide pestle, 33a
, 33b...Chain, 34...Transportation rod, 35...Motor 36...Bracket, 37...Box, 38... ... Guide shaft, 39 ... Piece, 40 ... Coil spring, 45 ... Transport rod return mechanism, 47 ... Rotating shaft, 48 ... ·····arm. 1 B Figure 3 Figure 4 Patent Applicant Tadamichi Asahinata Figure Figure 4

Claims (1)

[Claims] a feeding table on which a container body with an opening facing upward can be slid freely; a sealing table having a seal mold that is raised around the container body placed on the top surface; Carrying-out tables whose upper surfaces are slidable are arranged in sequence with their upper surfaces at approximately the same height, and are arranged continuously on both sides of each platform, parallel to each other, and operate intermittently over a fixed length. a pair of conveyor chains, and a number of conveyor bars are horizontally suspended between both chains at intervals corresponding to the intermittent operation pitch of the chains, and move along the upper surface of each platform together with the chains; The rod is attached to each chain so that it can reciprocate a certain length in the longitudinal direction of the chain, and is biased toward the chain traveling direction by a spring. A sealing device for a cup-shaped container, comprising a transport rod return mechanism for retracting the transport rod to a position where it is removed from above the seal mold of the sealing stand when the chain is stopped.