JPS63138921A - Bag opening-section welding mechanism of sealing packer - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a sealing packaging device for deaerating the inside of a packaging bag made of synthetic resin such as vinyl film and sealing the opening.
Specifically, the present invention relates to a mechanism for pressing and welding a packaging bag across the width of the opening.

[Prior Art] In general, the inter-bag 1i mechanism of this type of household sealed packaging device has a lid that is hinged at the rear of the base body, as shown in Japanese Utility Model Application Publication No. 55-63805. A RJa structure has been put into practical use in which the lower surface of the front end of the body is used as a presser, and the bag opening is pressed against the heater of the base main body in the r1 direction by pressing down the presser with body hair.

Further, as shown in Jitsukai No. 59-121304, there is also a known melting gamma i mechanism in which an operating knob separate from the lid is provided and the bag opening is pressed against the heater by pressing down the operating knob.

[Problems to be Solved by the Invention] By the way, according to the Ja structure described above, since the pressure is applied manually, variations in the pressing force cannot be avoided, resulting in poor sealing performance.

That is, when pressing manually, generally the force is insufficient, so the upper and lower film surfaces of the opening are often not completely sealed. In addition, it was not possible to continue pressing uniformly within the time required for sealing. In other words, according to experiments, the pressing force required for sealing was about 5 to 10 kg, and it took 10 seconds to 15 kg. This is because the button must be pressed continuously for about 7 to 9 seconds at the earliest.

Furthermore, if you push too hard, the opening of the bag will burn out if the heating power of the heater is too high.

Furthermore, because the welding of the bag opening has not received much attention, there has been no structure that can obtain a large welding force using a small drive source.

Therefore, the present invention was invented in view of the above-mentioned circumstances, and uses the locking means of the bag holding member as a fulcrum to press the bag opening against the heater etc. using a small driving source to achieve a perfect seal. What I made possible.

That is the purpose.

[Features of the Invention] In order to achieve the above object, the open mouth welding mechanism of the sealed packaging device according to the present invention is provided with a locking means to the base body at the front and rear intermediate portions of the bag holding member, preferably at the front portion. The present invention is characterized in that a suppressing step for pressing the front side of the bag presser member against the base body using the locking means as a fulcrum is disposed on the rear side of the bag presser member.

[Operation of the Invention] When the bag opening is placed over the deaeration nozzle of the base body and the bag presser member is moved to the bag presser position, the bag presser member is engaged with the base body by the locking means. In this case, the bag presser member is locked at its front-rear intermediate portion, preferably at its more anterior portion, and serves as a fulcrum.

In such an IS, if the rear side of the holding member is pressed by the seven stages of suppression, the front side of the middle part in the front-rear direction of the bag holding member serves as a fulcrum and presses down the lower surface of the front end side in the width direction of the bag opening,
The opening of the bag will be melted 7i.

[Embodiments of the Invention] The drawings show an embodiment of the open mouth welding mechanism of a sealed packaging device according to the IJJ of the present invention. The same perspective view in the open state, 3rd
The figure is a perspective view of the degassing state with the presser member locked, FIG. 4 is an explanatory cross-sectional view of the mechanism in the locked state, FIG. 5 is an explanatory cross-sectional view of the mechanism in the welded state, and FIG. It is a schematic perspective view of a toggle mechanism.

The sealed packaging device 1 can be provided with a base body 2 that is rotatable as a bag presser, and includes a temporary holding member 3 for degassing and a lid 4 for welding. The recess is provided with a deaeration nozzle 5 communicating with a deaeration source.

The lid body 4 has an inverted dish shape as a whole with front and rear ends 40.41.
is protruded downward, and a locking means 6 is provided at an intermediate portion 4a in the longitudinal direction, preferably a front portion 4b, and
An elastic material 4 is provided on the lower surface of the front end side 40 in the left and right direction 11J.
A bag presser section 42 is configured. Also, the lid body 4
A toggle pressing section 7 serving as a pressing means is disposed at the rear end a41 of the toggle pressing section 7. In this case, the lid 4 can be rotatably provided on the upper surface of the base body 2 via the hinge part 8 on the rear end side 40, and a temporary holding member 3 for degassing is provided inside the lid 4. It is stored separately.

To be more specific, the four bodies 4 can be provided with a reinforcing lip 44 in the longitudinal direction at the center of the χ plane in the width direction. For example, a hook 60 is provided.

The hook 6o is provided in a swinging position on the lid 4 using a hinge pin 62 of a lever 61 disposed in the upper recess 45 of the lid 4 as a fulcrum, and is normally pulled in the locking direction by a spring 63. The hook 60 has a structure in which it is hooked onto the other locking means provided on the base body 2, for example, a pin 64 in the hole 20 provided on the top surface of the body.

Further, the reinforcing lip 44.
A receiving protrusion 46 is provided between the receiving protrusions 44, and a bushing rod 7o of the toggle pressing portion 7 housed inside the base main body is connected to the receiving protrusion 4 from the hole 21 of the base main body 2.
2 is placed so that it can be pressed upward. The toggle pressing portion 7 is configured such that a solenoid 71 serving as a driving source moves the rod 72 in the horizontal direction a! ! 11T and is connected to a toggle link 73. In the toggle link 73, one end of the first link plate 74 is pivotally connected to the internal rib 22 of the base body, and the other end is pivotally connected to one end of the second link plate 75. The bushing rod 70 is provided at the end. The other end of a third link plate 76, which intersects with the pivot point of the first and second link plates 74, 75 and has one end coupled to the rod 72, is pivotally connected, and is normally connected by a spring 77. 78 in Figure 9, where the rod 72 is pulled to the standby position.
79 is a pin for each pivot point, and 79 is a spring retaining pin.

Furthermore, the rear end side 41 of the lid body 4 can be constructed to be covered in a free state against the above-mentioned suppression, but it can also be provided rotatably via the hinge tiB8. In the latter case, for example, a long hole 81 extending downward E is provided in the base body 2, and the shaft pin 80 of the lid body 4 is inserted into this long hole 81, thereby controlling the vertical movement of the rear end side 41. The structure shall allow for this.

In addition, the temporary holding member 3 has a generally U-shape as a whole, and its base end is approximately U-shaped. lA30.30 can be rotated i! 1!
tied together. The holding part 31 of the temporary holding member 3 is provided with an elastic material 32 on the lower surface, and is configured to run in the direction of the crest with respect to the receiving strip 24 on the upper surface of the base body 2. In this case, the thin wall receiving portion 50 of the deaeration nozzle 5 is in the holding position. The temporary holding member 3 is provided with engagement means on the left and right sides of the holding part 31 at the holding position, and has, for example, a pair of latch receivers 33 protruding from the hole 22 of the base body 2.
4 can be placed on the presser part 31. The latch receiver 33 is pushed into the hole 22 at the holding position of the temporary holding member 3, and is narrowed into a pair of spaces to form a lock shape.
becomes.

The deaeration nozzle 5 has a plurality of branch ports 511. are in communication with each other, and the lower part 54 thereof is curved into a bulge in the middle, and 1-
The lower side portion 55 than the side portion 54 can be configured in a substantially straight line. The deaeration nozzle 5 is held by a cover member 23.

In the figure, 24 is a filter mechanism interposed between the deaeration nozzle 5 and a deaeration source (not shown), and 25 is the deaeration force of the L portion, 7.
! 26 is a heater.

The effect based on the above a formation will be explained.

As shown in FIG. 2, with the lid body 4 and temporary holding member 3 in the upper standby position, the bag opening CI is placed over the deaeration nozzle 5 and moved to one side.Next, as shown in FIG. As shown, the temporary press member 3 is rotated to press the bag opening C1 in 11 directions. The temporary holding member 3 is 1. 34 is the latch receiver 3
3 and is pressed down, the bag becomes locked, as shown in Figure 4. ! &cl is temporarily fixed by the elastic material 32 of the presser part 31 with the upper and lower film surfaces C2 and C3 supported by the receiving projections 27 across the width direction. If the inside of the bag is degassed from the deaeration nozzle 5 in such a state, the third
As shown in the figure, the degassing state can be sensed from inside and outside the U-shape.

After degassing, as shown in FIG. 4, when the four bodies 4 are rotated from the standby position to the holding position, the hooks 60 engage with the pins 64, thereby locking the vessel body. If you operate the operation button in such a state, the rod 7 of the solenoid 71
As the bushing rod 2 moves backward, the pivot points of the bushing rods 74 and 75 are stretched through the third link plate 76, so that the bushing rod 7o rises upward. In this case, since the shaft pin 80 of the lid body 4 rises inside the elongated hole 81, movement of the rear end side 41 is permitted.

Since the bushing rod 70 pushes the receiving projection 46 upward, the four bodies 4 are pushed down on the front end side 40 in the direction f using the hook 60 as a fulcrum. The hook 60 is connected to the receiving protrusion 4
6 and the front end side 40, the positional relationship may be set slightly from the middle part 4a to the front part 4b, preferably about 8 to 5. As a result, the front part C1 of one bag is placed on the heater 26 with a constant pressure. Pressed for desired time.

After the pressure reading is completed, the rod 72 of the renoid valve 71 moves forward according to the spring 77 due to the opening operation of the electric circuit.
The pivot points of the first and second link plates 74 and 75 are Ji
r', the bushing rod 70 retreats upwardly and releases the suppression.

As a result, the lever 61 is operated to unlock the lever 60 and move the lid 4 to the standby position.

As explained above, the above embodiment provides the following effects.

■ By using a structure in which the toggle pressing part 7 presses the front end 40 using the front part 4b as a fulcrum from the middle part 4a of the lid body, it is possible to press the bag opening C1 with an even and necessary pressing force and weld it. .

Since the toggle pressing section 7 was configured as the zero pressing means, the pressing force of the solenoid 71 could be doubled and utilized.

(2) By forming the hinge portion 8 on the rear end side 41 of the lid body into a slidable connection structure, the lid body 4 can be put to practical use as a booster pressing mechanism.

[0077] Since the means 6 and the toggle pressing part 7 are arranged in the middle of the lid body 4 in the width direction, the pressing force of the bag presser part 42 is not deviated across the width direction.

This can be avoided, although one assembly error generally causes variation in the pressing force in the width direction.

FIG. 7 is a schematic explanatory diagram showing another pressing means.

Thus, the bushing rod 91 is configured to be movable up and down by the cam 9o as a suppressor. The cam 90 is configured to be rotatable by a drive source such as a motor (not shown).

According to this embodiment, the rotation of the cam 9o causes the cam surface 92 to press the rear end side 41 of the lid 4 to the welding position.

Further, FIG. 8 is a schematic explanatory diagram showing an embodiment of another pressing means.

The solenoid 93 is arranged in the vertical direction, one end 96 of a lever member 95 is connected to the rod 94, and the other end 97 is brought into contact with the receiving projection 46. In this case, the fulcrum is kept close to one end. According to this embodiment, as the rod 94 retreats,
The retraction force is amplified at the other end 97 of the lever member 95 and can be operated and pressed against the receiving protrusion 46, allowing a double boost mechanism to be constructed using a small drive source.

In each of the above-mentioned embodiments, an example in which the lid 4 and the temporary pressing member 3 are constructed separately as one bag pressing member has been described, but it is also possible to provide them integrally on the front end side 40 of the lid 4.

Further, since the locking means 6 is merely an example, other locking structures can be implemented, and a structure in which a plurality of locking means are arranged at desired positions in the direction of the lid body 10 can also be implemented.

[Effects of the invention] As explained above, the open mouth welding mechanism of the sealed packaging device according to the present invention provides the following effects.

■The front side of the bag presser member can be pressed between it and the base body using the locking means for the base body provided at the middle part of the bag presser member in the longitudinal direction, preferably the front side, as a fulcrum, and the bag opening can be made evenly and accurately. was able to be welded and sealed.

(2) Since the pressing means presses from the rear side of the bag pressing member using the intermediate portion in the longitudinal direction of the bag pressing member, preferably the front portion, as a fulcrum, welding can be achieved by predetermined suppression even if the output of the pressing means is small. Moreover, the sealed packaging device has been made smaller and can be used for home use, and the troublesome pressing work is no longer required, which frees up both labor costs.

[Brief explanation of the drawing]

The drawings show an embodiment of the open mouth welding mechanism of the hermetic packaging device according to the present invention, and FIG. 1 is a perspective view of the whole when welding is applied to the hermetic packaging device, and FIG. 2 is the same perspective view in the open state. Figure 3 is the same perspective view of the deaerated state with the presser member locked, and the fourth bacterium is in the locked state of the same crushing structure! Fig. 5 is a cross-sectional view of the welded state of the mechanism, Fig. 6 is a schematic perspective view of the toggle mechanism, and Figs. 7 and 8 are cross-sectional views of the other side of the mechanism. It is an explanatory diagram. 11. Sealed packaging device, 21. Base body, 39. Temporary holding member, 49. Lid body, 4a9. Middle part, 4b9. Front part. 59. Deaeration nozzle, 60. locking means, 70. Toggle pressing part, 89. Hinge part, 400. Front end side, 41. , rear end side, 4211 bag holding part, 44.6 reinforcing rib. 469. Reception projection, 600. Hook, 611. Lever, 70.91. , Butschrodt. 71.93. , nrenoid. 73,,) Glulink, 74-76,,gS- to third link plate.

Claims (1)

[Scope of Claims] A sealed packaging device that deaerates and seals the inside of a bag by pressing a bag opening over a deaeration nozzle of a base body in the width direction with a bag holding member, comprising: the bag holding member; A locking means to the base body is provided at an intermediate portion in the front-rear direction, preferably at a front side portion, and a pressing means for welding the bag opening by pressing the front side of the bag presser member with the base body using the locking means as a fulcrum is the bag. A bag opening welding mechanism for a sealed packaging device, characterized in that the mechanism is disposed on the rear side of a presser member.