JPS6339040Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] The present invention relates to an opening device for opening a thermoplastic plastic packaging bag whose opening part is sealed with a heat seal. The present invention relates to a heat-seal bag opening device suitable for use in opening heat-seal bags enclosing objects, and heat-seal bags for dental X-ray film that are opened after injecting medical solutions.

[Conventional technology]

In recent years, heat-seal bags, in which a product is placed in a thermoplastic plastic bag and the unsealed part is sealed with a heat seal, have been widely used, especially for enclosing products in a wet state and for dental X-rays. These heat-seal bags are generally used to enclose items such as films that require injection of a chemical solution before opening.

If these heat-sealed bags filled with wet products are opened with the edge of scissors or the like, the chemical solution from the contents may leak out or, depending on the object, may damage the contents, so generally, The package is often heat-sealed leaving an extra length that can be picked up with fingers at the end to be opened, and the package is opened by spreading the extra length with fingers and peeling off the heat-sealed section.

[The problem that the idea aims to solve]

However, in order to open the conventional heat-sealed bag, it is necessary to use both hands to open the bag by grasping two opposing parts of the extra length with fingers, spreading the bag, and peeling off the heat-sealed part. In addition, if the heat-sealed part is tightly bonded, it may be difficult to open the package with your fingers, the package may open suddenly and the contents may spill out, and your fingers may become stained with the chemical solution from the contents. There are some annoyances.

The object of the present invention is to provide a heat-seal bag opening device that can easily and reliably open these heat-seal bags instead of using the fingers.

[Means to solve the problem]

In order to achieve the above object, the present invention has the following configuration. That is, the heat seal bag opener according to the present invention has rear ends connected to each other by a connecting shaft, can be opened and closed in a beak shape using the connecting shaft as a fulcrum, and has one surface on each tip. A pair of opening arms each having flat plate-shaped insertion claws that face each other so as to be able to abut each other, and each of these opening arms is provided on the back side of the tip of the opening arm, and the tip of the opening arm is provided on the back side of the tip of each of the opening arms so that the tip faces the back surface of the insertion claw. A pair of gripping tools each having a gripping claw, having a concave portion on the rear end surface, and whose intermediate portion in the front and back direction is rotatably supported by an opening arm via a fulcrum pin; along the back of the opening arm, and its tip is slidably inserted into the recess of the gripper, and attached to each opening arm via a connecting pin provided in front of the connecting shaft near the rear end of the opening arm. A pair of gripping arms that are rotatably connected and each has a gripping portion at the rear thereof, and a C-shaped spring that is provided with its end in contact with the back surface in front of the connecting pin of each of these gripping arms. It is equipped with the following.

〔Example〕

Regarding the heat seal bag opening device of the embodiment of the present invention,
This will be explained below with reference to the drawings.

FIG. 1 is a partially cutaway front view showing a heat seal bag opening device according to an embodiment of the present invention, FIG. 2 is a plan view thereof, and FIG. 3 is a sectional view taken along line A-A.

1 to 3, reference numerals 1 and 1' denote a pair of opening arms, each of which is made of a metal plate, and each has a plate-shaped insertion claw 3, 3' at its tip. At the same time, both ends in the front-rear direction at the rear following the insertion claws 3 and 3' are bent to one side as shown in FIG. 3, and a recess extending in the length direction is formed on one side of each. It is something.

These opening arms 1 and 1' face each other with the side surface in which the recess is formed as the back surface and the side surface opposite to the recess as the inner surface, and their rear ends are rotatably connected to each other via the connecting shaft 2. It can be opened and closed in a beak shape using the connecting shaft 2 as a fulcrum, and the inner surfaces of the insertion claws 3, 3' at the tips can be brought into contact with each other to form a pair of plate shapes.

Reference numeral 7 denotes a gripping tool, and the gripping tool 7 is made of a metal plate. At its tip, gripping claws 4 are provided with the tips of both sides in the width direction protruding inward, and on the rear end surface, a second gripping claw 4 is provided.
As shown in the figure, a recess 5 is formed by bending both widthwise ends inward.

The gripping tool 7 forms a pair of opening arms 1,
1' are arranged on the back side of each tip,
The tips of the gripping claws 4 are opposed to the rear tips of the insertion claws 3 and 3', and the intermediate portions of the gripping claws 4 and 3' are rotatably supported by the opening arms 1 and 1', respectively, via a fulcrum pin 6. The tip of each gripping claw 4 is brought into contact with the back surface of the insertion claws 3 and 3',
It is said to be something that can be used to separate people.

10 is a grasping arm, the grasping arm 10
is an integrally molded product made of synthetic resin, the front part of which is shaped like a rectangular rod, and the rear part of which is provided with an annular grasping part 9, and the most extreme part thereof has a concave part on the rear end surface of the grasping tool 7. A drive end 12 is provided which is slidably inserted into 5 .

Then, a pair of grasping arms 10 of the same shape are formed, and the front portions of the respective flat rods are connected to the open arms 1 and 1'.
along the rear back surface of the gripping tool 7 and inserting the driving end portions 12 at the most distal end into the recesses 5 on the rear end surface of the gripping tool 7, and the front of the connecting shaft 2 near the rear end of the opening arms 1, 1'. It is rotatably connected to each of the opening arms 1 and 1' via a connecting pin 8 provided in the opening arms 1 and 1'.

Further, these pair of grasping arms 10 are bent toward the back side near the connecting pin 8 so that the grasping sections 9 rearward near the connecting pin 8 move away from each other.

11 is a spring, and the spring 11
is a metal C-shaped member, which passes through an elongated hole 13 previously provided between the annular gripping portion 9 of each gripping arm 10 and the connecting pin 8, and connects both ends of the hole to each of the pair of gripping arms 10. The gripping arms 10 are provided in recesses 14 provided on the back surface in front of the connecting pins 8 so as to be brought into contact with each other and pressed in a direction to bring the front portions of the pair of gripping arms 10 closer to each other.

In addition, the heat-sealed bag opener is configured so that the inner surfaces of the insertion claws 3 and 3' at the tips are brought into contact with each other by the elasticity of the spring 11, so that they form a pair of plate-like shapes unless external forces are applied. Further, the tips of the gripping claws 4 and the back surfaces of the insertion claws 3, 3' are adjusted to be spaced apart from each other.

Further, holes 15 into which the tips of the gripping claws 4 are bitten are provided at the portions on the back surfaces of the insertion claws 3, 3' where the tips of the gripping claws 4 come into contact.

How to use the heat-sealed bag opening device of this embodiment having the above-mentioned configuration will be explained with reference to FIGS. 4 to 6, which are explanatory diagrams of its operation.

First, as shown in FIG. 4, the insertion claws 3 and 3' at the tips are inserted between the pair of extra lengths 20 of the opening portion of the heat seal bag 20.

At this time, the tip of the gripping claw 4 of the gripping tool 7 is
1. Place it outside of each.

Next, grasp the space between the grasping portions 9 of the pair of grasping arms 10 by hand.

At this time, as shown in FIG.
With the connecting pin 8 as a fulcrum, the front part of the gripper 7 moves outward as shown by the arrow A in the figure, and the rear end of the gripping tool 7 is connected to the rear end of the gripper 7 via the drive end 12 at the most distal end thereof. Push them outward as shown by the arrows B in the figure. In this state, the tips of the gripping tools 7, that is, the gripping claws 4, are directed inward with the fulcrum pin 6 as a fulcrum, as shown by the arrow C in the figure, and are interposed between the insertion claws 3 and 3', respectively. Grip the extra length 21 of the heat seal bag 20.

Further, when the pair of grasping arms 10 continues to grasp, the opening arms 1 and 1' will be moved as shown in FIG.
Using the connecting shaft 2 at the rear end as a fulcrum, each tip is opened outward as shown by arrow D in the figure.

During this time, since the operating force continues to be applied to the gripping tool 7, the tips of the gripping claws 4 bite into the holes 15 of the insertion claws 3 and 3', and the extra length 21 of the heat-sealing bag 20
to ensure a more secure grip.

Grasping by the gripping claws 4 and the insertion claws 3, 3',
Due to the openings at the tips of the opening arms 1 and 1', the extra length 2 of the heat-sealing bag 20 is opened as shown by the arrow H in the figure.
The package can be opened by expanding the heat sealing part 10 by 1 and peeling it off.

After opening the package, when the grasping arm 10 is released, the front parts of the pair of grasping arms 10 are pushed inward by the elasticity of the spring 11, and the opening of the opening arms 1, 1' and the grasping The grip between the claw 4 and the insertion claws 3, 3' is released.

Note that the pair of grasping arms 10 in the above process
The grasping between the grasping parts 9 can be performed with one hand.

[Effect of idea]

As described above, the heat-seal bag opening device according to the present invention can be used with hands and fingers for heat-seal bags containing moist products and heat-seal bags for dental X-ray film that are opened after injecting a chemical solution. Instead, it has a great practical effect of being able to be opened easily and reliably.

[Brief explanation of the drawing]

FIG. 1 is a front view with parts cut out showing a heat seal bag opening device according to an embodiment of the present invention, FIG. 2 is a plan view of FIG. 1, and FIG. 4 to 6 are explanatory views of the operation of the heat seal bag opening device according to the embodiment of the present invention. 1, 1'...Opening arm, 2...Connection shaft, 3,
3'...Putting claw, 4...Gripping claw, 5...Recess, 6
...Fully pin, 7...Gripper, 8...Connection pin, 9
... Grasping part, 10... Grasping arm, 11... Spring.

Claims (1)

[Scope of utility model registration request] Flat plate-shaped insertion claws whose rear ends are connected to each other by a connecting shaft, which can be opened and closed in a beak shape using the connecting shaft as a fulcrum, and whose respective tips have one surface facing each other so as to be able to come into contact with each other. a pair of opening arms, each of which is provided on the back side of the tip of each opening arm, the tip of which is provided with a gripping claw whose tip is opposed to the back of the insertion claw, and the rear end face is provided with a recess; , a pair of gripping tools whose front and back intermediate portions are rotatably supported by the opening arm via a fulcrum pin, the front part of which is aligned with the back surface of the opening arm at the rear of the gripping tool, and the tip end thereof is slidably inserted into the recess of the gripping tool, and is rotatably connected to each of the opening arms via a connecting pin provided in front of the connecting shaft near the rear end of the opening arm, and the gripping portion is attached to the rear of the opening arm. A heat-sealing bag opener comprising: a pair of gripping arms; and a C-shaped spring, the end of which is in contact with the back surface of each of the gripping arms in front of the connecting pin. .